Pesticides in Ground Water Database A Compilation of Monitoring Studies 1971-1991 Region 7


Prevention
United States	Pesticides and	EPA 734-12-92-001
Environmental Protectio	Toxic Substances August 1992
Agency	(H7507C)
&EPA Pesticides In Ground Water Database
A Compilation Of Monitoring Studies: 1971-1991
Region 7
IOWA KANSAS MISSOURI NEBRASKA

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REPORT DOCUMENTATION PAGE
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3. REPORT TYPE AND OA'gS COVERED
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Pesticides In Ground
A Co~.nlla:ion
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Patrick ilamon
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US Lnvironr.ental Protection Agency
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Washington, DC 20460

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Interim Report''
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pub!tcally available, no limitations
123. CIS"* 3„ * C'i CtOE
13. J3ST^JCT ViJ'."<5 AC.is.
This report presents summary results on pesticide monitoring of ground water from
1971 to 1991. It was coinpilod from ground water monitoring projects performed
primarily by federal agencies, rtat?. .agencies and research institutions. The data
is vel.l and sample specific. The report is broken into a National Sumary and
10 L'S LPA regional volumes. The information ispresented as text, naps, graphs
and tables or. a national. EPA regional and state/county level.
The Region 7 volume is comprised of data from Iowa, Kansas, !:lis sour i and
Nebraska. ^
'4. SwSJECT *E^MS
database ground water pesticides
national water pesticide monitoring
report drinking water
•S. VJV8ER OF ?ACES
476
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17. SeCUSiTY CLASSIFICATION
OF REPORT
none
18. SJCJSlTY CLASSIFICATION
OF THIS PAGE
none
19. SECLR.7Y CLASS.FiCATION
OF ABSTRACT
none
20 LIMITA'ICN OF A3STRACT
none
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Pesticides in Ground Water Database - 1992 Report
Mention of trade names, products, or services does
not convey, and should not be interpreted as
conveying, official EPA approval, endorsement, or
recommendation.

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Pesticides in Ground Water Database -1992 Report
Pesticides in Ground Water Database
A Compilation of Monitoring Studies: 1971 - 1991
*	*"9
Region 7
Office of Pesticide Programs
Environmental Fate and Effects Division
Environmental Fate and Ground Water Branch
Henry Jacoby, Chief
Pesticide Monitoring Program Section
Constance Hoheisel
Joan Karrie Susan Lees
Leslie Davies-Hilliard Patrick Hannori
Roy Bingham
Ground Water Technology Section
Elizabeth Behl
David Wells Estella Waldman
August 1992

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Pesticides in Ground Water Database - 1992 Report, Region 7
CONTENTS
OVERVIEW 						OV-1
REGIONAL MAP			OV-14
GRAPH: WELLS BY STATE 						 OV-15
STATE SUMMARIES;
IOWA
State Map			 1-IA-l
Overview of State Legislative and Environmental Policies
Regarding Pesticides in Ground Water 					 l-IA-3
Reported Studies of Pesticides in Ground Water			l-IA-4
Table: Pesticide Sampling in the State of Iowa	 l-IA-15
Table: State of Iowa - Wells by County			 l-IA-277
KANSAS
State Map					1-KS-l
Overview of State Legislative and Environmental Policies
Regarding Pesticides in Ground Water 				l-KS-3
Reported Studies of Pesticides in Ground Water 	l-KS-4
Table: Pesticide Sampling in the State of Kansas 	l-KS-9
Table: State of Kansas - Wells by County		 l-KS-57
MISSOURI
State Map		 						1-MO-l
Overview of State Legislative and Environmental Policies
Regarding Pesticides in Ground Water 	l-MO-3
Reported Studies of Pesticides in Ground Water					l-MO-3
Table: Pesticide Sampling in the State of Missouri 	l-MO-9
Table: State of Missouri - Wells by County			 l-MO-47
NEBRASKA
State Map 											1-NE-l
Overview of State Legislative and Environmental Policies
Regarding Pesticides in Ground Water 	 l-NE-3
Reported Studies of Pesticides in Ground Water							 . l-NE-4
Table: Pesticide Sampling in the State of Nebraska	l-NE-17
Table: State of Nebraska - Wells by County 			 l-NE-39
APPENDICES
Pesticide Cross-Reference Table 		Appendix 1-1
National Survey of Pesticides in Drinking Water Wells	 Appendix II-l

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INTRODUCTION AND OVERVIEW
I. INTRODUCTION
The U.S. Environmental Protection Agency/Office of Pesticide Programs (EPA/OPP)
is responsible for protecting human and environmental health from unreasonable risk due
to pesticide exposure. Monitoring efforts carried out during the last decade have shown that
the nation's ground water can become contaminated with pesticides, particularly in areas
with high pesticide use and vulnerable aquifers. Therefore, OPP has taken a strong
preventive approach to the protection of this valuable resource. Regulatory activities have
evolved to include, as a condition of registration or re-registration, a more rigorous
evaluation of a pesticide's potential to reach ground water. OPP has also formed strong
partnerships with other federal and state agencies responsible for various aspects of ground-
water protection.
The Pesticides in Ground Water Database (PGWDB) was created to provide a more
complete picture of ground-water monitoring for pesticides in the United States. It is a
collection of ground-water monitoring studies conducted by federal, state and local
governments, the pesticide industry and private institutions. It consists of monitoring data
and auxiliary information in both computerized and hard-copy form. This report, Pesticides
in Ground Water Database — A Compilation of Monitoring Studies: 1971 • 1991, was prepared
to summarize and share the results of the studies in the PGWDB. It consists of 11 volumes:
a National Summary and ten EPA regional summaries. Each volume provides a detailed
description of the computerized PGWDB and a guide to reading and interpreting the data.
The data are presented as maps, graphs and tables.
These data are extremely valuable, but must be interpreted carefully. In general, the
PGWDB provides an overview of the ground-water monitoring efforts for pesticides in the
United States, the pesticides that are being found in the nation's ground water, and the
areas of the country that appear to be vulnerable to pesticide contamination.
When viewed as a whole, it might appear the data gathered for this report are
representative of the United States and/or of general drinking water quality. This is not
necessarily the case. For example, many studies included sampling of aquifers that supply
drinking water, however these samples were usually taken at the well, not at the consumer's
tap. Therefore, conclusions concerning finished water can only be drawn by careful
examination of the data on a study by study basis. In addition, ground-water monitoring
programs vary widely in sampling intensity and design from state to state. Not surprisingly,
the states that sampled the greatest number of wells were often those that found the
greatest number of contaminated wells. This should not be misconstrued to mean that the
ground water in these states is more contaminated than that of other states, or that all
ground water in these states is contaminated. On the contrary, an active, supported
sampling program generally indicates a high regard for ground-water quality.
OV-1

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The database and this report are the result of the efforts of a great many individuals,
significant among whom are the state officials and principal investigators who gave
generously of their time to provide OPP with information concerning their work. In
publishing this report, OPP intends not only to provide data, but also to identify points of
contact, in order to share expertise among those responsible for the protection of the
nation's ground-water resources.
To make this information available to as many decision makers in state and other
federal agencies as possible, the computerized portion of the PGWDB will become a part
of the Pesticide Information Network (PIN).1 ITae PIN is a computerized collection of files
that contain pesticide monitoring and regulatory information. The PIN functions much like
a PC-PC bulletin board and can be accessed by anyone with a computer and a modem. The
PIN is currently undergoing an expansion that will allow new types of information to be
included and increase the number of simultaneous users. The new PIN will be available in
1993 and will contain the PGWDB, environmental fate chemical/physical parameters for
pesticides, pesticide regulatory information (Restricted Use, Special Review, canceled and
suspended) and a certification and training bibliography.
II. THE ROLE OF PESTICIDE MONITORING
The Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) requires EPA to
monitor the environment for pesticide residues [section 20, parts (b) and (c)]. The primary
goal of pesticide monitoring is to improve the soundness of FIFRA risk/benefit regulatory
decisions by providing information on the concentrations of pesticide residues and the
effects that exposure to these residues have on human health and the environment. In
addition, long-term changes in environmental quality can be detected through the analysis
of monitoring data. OPP can use this information to measure the effectiveness of regulatory
decisions and to indicate potential environmental problems.
EPA has directly sponsored some large-scale pesticide monitoring projects, such as the
National Monitoring Programs of the 1970s2 and the recent National Survey of Pesticides
in Drinking Water Wells.3 This type of monitoring is intended to provide information on
a national level involving large numbers of pesticides. It does not provide information
concerning localized problems or long-term trends. This method of data gathering is also
extremely resource-intensive. An alternative approach for OPP is to support and gather
information from monitoring studies performed by others. Since the responsibility for
protecting the nation's ground water is shared by federal and state governments, OPP's data-
handling responsibilities not only include procuring the most current information for its own
needs, but also sharing this information with its partners in state and federal agencies. The
development of the Pesticides in Ground Water Database is a step in this direction.
OV-2

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m. BACKGROUND
OPP began collecting ground-water studies for the PGWDB in the early 1980s. In 1988,
an effort was made to review and catalog these data. Summary results of this effort were
computerized and then published in the Pesticides in Ground Water Database: 1988 Interim
Report4
Since the 1988 Interim Report was issued, many things have changed. State-sponsored
projects, initiated in the late 1980s, have been completed and digitized, monitoring
methodologies and computer technology have improved, and the quality and quantity of data
have increased. Based on extensive use of the 1988 database by OPP's Ground Water
Technology Section and the comments received from other users, both within and outside
of OPP, the computerized database and the hard-copy report were restructured. The new
computerized structure is more appropriate for the quality and quantity of the information
currently available, as well as for that expected in the future. The new structure is both well
and sample specific; that is, it contains description and location information for each well
sampled and the results of each analysis. This structure allows ground-water monitoring
data to be sorted in a variety of ways, such as by well depth, well location, and sampling
date. The new report structure provides national, regional, state and county summaries so
that readers can select the resolution appropriate for their needs.
Most of the data in the PGWDB have been produced directly by state agencies or by
private institutions that are sponsored by federal or state agencies. Some pesticide industry-
sponsored studies have also been included in the PGWDB. These studies were conducted
to support the registration status of a particular pesticide and were generally conducted in
areas that are vulnerable to ground-water contamination by pesticides.
The database is a compilation of data submitted in several different formats, including
computerized and hard-copy sampling results as well as hard-copy reports containing study
descriptions and summary information. Many states are now routinely storing their data in
computerized form and have shared their data with OPP. Some of the hard-copy data are
from older studies that were never computerized. Some are from studies that have been
computerized, but OPP has not yet been able to obtain the data. OPP is also retaining
hard-copy final reports for as many studies as possible. These reports provide vital
information such as study design, well design, analytical methods, quality control and
environmental conditions.
The focus of the PGWDB is quite narrow. It contains only ground-water monitoring
data in which pesticides were included as analytes. Therefore, the PGWDB does not
replicate STORET6 or WATSTORE6. While these large databases contain some pesticide
monitoring data and some ground-water data, their primary focus is general water quality.
As a result, these databases contain a great deal more information about water quality, but
lack many of the pesticide focused studies that are included in the PGWDB. Many states
have used STORET to store water-quality data, including analyses for pesticides. STORET
data were downloaded and added to the PGWDB when the data could be directly
OV-3

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associated with specific study summaries or reports sent to OPP by state agencies. These
state agencies provided their agency code, station codes, parameter codes, sampling dates
and other pertinent information so that the correct data could be extracted from STORET.
Data from the National Survey of Pesticides in Drinking Water Wells (NPS)3 have not
been included in PGWDB, since these data have been recently and extensively presented
elsewhere. We are currently working on electronically transferring the results of the NPS
pesticide analyses so they will be available when the PGWDB becomes part of the PIN.
iv npjjg computerized DATABASE
The computerized database consists of three files related to each other by study
identification and unique well number. The first file contains information describing the
study, the second contains information describing each well and the third contains sample
information. Data elements stored in these files are presented in Figure 1. These data
elements are based on EPA's recommended minimum set of data elements for ground-water
monitoring published in Definitions for the Minimum Set of Data Elements for Ground-Water
Quality, July 22, 1990?
FIGURE 1. Data Elements for the Pesticides in Ground Water Database
STUDY file
UEU ftU
SAHPIC FILE
Study Nuifcer
Study Nwfcer(s)
Study Nwfcer
Study Title
Unique Met I Nurber1
Unique Mel I Nunber'
Sponsoring Agency(ies)
2
State and County FIPS Codes
Pesticide^
Project Offieer(s) (CO)
Latitude arid Longitude'
Concentration
PO Address(es)
Depth to Water Table (a)
Limit of Detection Cug/O
PO TelephoneCs)
Mel I Depth (m>
Sample date
USEPA Region
Depth to Top arid Bottom of Screen
Interval (m)
Analytical Method®
Starting and Ending Dates
Uell Type4
o
Origin of Contamination
Publication Date
c
Well Log & Other Information

Abstract
Altitude^
1. This is a unique identifier assigned to each well ia the well file. Many states have assigned a unique
identifier to wells sampled. In these cases, the number was retained, and used in the PGWDB as that well's
unique well number.
2. The Federal Information Processing Standard (FTPS) alphabetic or numeric codes for states (example MI
is the alphabetic code for Michigan, 26 in the numeric code for Michigan). County codes are three dipt
numeric codes.
OV-4

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3.	Coordinate representations that indicate a location on the surface of the earth using the equator (latitude)
and the Prime Meridian (longitude) as origin. Coordinates are measured in degrees, minutes, and seconds
with an indicator of north or south, and east or west.
4.	Wells have been classified as follows:
Drinking water public community - a system of piped drinking water that either has at least 15 service
connections or serves at least 25 permanent residents.
Drinking water public non
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The National Summary contains summary results of the data collection effort for all
states and a discussion of the data. The regional volumes contain data from the individual
states in each EPA Region. Each regional volume contains state summaries, which consist
of: 1) a short overview of the state's philosophy and pertinent regulations concerning
ground-water quality and pesticides, 2) a summary of each study or monitoring effort sent
to OPP, and 3) summary data for each state presented in tables, graphs and maps. In
essence, the study summaries were written by the principal investigators of each study.
Whenever possible, the author's abstracts, summaries and conclusions were reproduced
verbatim, so that the tone and intent of their work would not be misinterpreted.
There are two appendices in each volume of the report. Appendix I contains a
Pesticide Cross Reference Table, which provides pesticide names, synonyms and the
regulatory status and lifetime Health Advisory (HA) Level or Maximum Contaminant Level
(MCL)7 for each pesticide. Appendix II provides a brief overview and reference information
for the NPS.
Summary and Presentation of Ground-Water Monitoring Data
The data in this report are presented in three different formats: maps, graphs and
tables. Their format and content are explained below. Each format is displayed at four
different resolution levels: national, regional, state and county. The charts and maps were
intended to provide an "at-a-glance" visual summary of the information collected for the area
in question. The tables provide detailed information concerning sampling dates, numbers
of wells sampled, samples analyzed, concentration ranges, and the relationship between
pesticide concentrations and current EPA drinking water standards.
1.	Maps
The maps presented in this report display the number of wells sampled and the number
of wells with pesticide detections. Map legends are consistent throughout the report to
assist in any visual comparison of the maps. A regional-scale map illustrating the
frequency of pesticide detections as a function of the total number of wells sampled is
presented at the beginning of each EPA regional volume. The regional maps display
information for each state in that EPA region. All of the regional maps are included
in the National Summary. In addition, a state- scale map, in which the data are
presented at the county level, is included with each state summary. State maps are also
annotated with a list of pesticides detected in that state.
2.	Graphs
Bar graphs, for each state within a region, illustrate the number of wells sampled, the
number of wells with pesticide detections, and the number of wells with pesticide
detections exceeding the MCL or lifetime HA. The graphs present this information
ranked in descending order by the number of wells with pesticide detections. The
version of this graph in the National Summary displays this information for each state.
A similar graph in each EPA regional volume presents data only for the states in that
region. The National Summary contains an additional graph, illustrating the above
information by pesticide. Pesticides for which analyses were performed but were not
detected in any wells are listed alphabetically at the end.
OV-6
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3. Tables
Two basic data tables are used throughout this report to summarize ground-water
monitoring information: the "Pesticides" table and the "Wells" table. Figures 2 and 3
provide a detailed explanation of the information contained in each column for the two
standard tables. The numbers that occur in the field descriptors correspond to the
definitions listed below the example table.
The "Pesticides" table is illustrated in Fipre 2. In this table, information is organized
by pesticide. The monitoring locations, sampling frequencies, number of wells
monitored, sampling results and concentration ranges are provided. In the National
Summary, this table details the monitoring location to the state level and also includes
the regulatory status for each pesticide. In the regional volumes, monitoring location
is provided to the county level for each state and the table is expanded to include
monitoring data for samples taken from each well.
FIGURE 2. Pesticides Table
PESTICIDE SWUNG IN THE STATE OF



WELL RESULTS
SAMPIE RESULTS
RANGE OF
CONCEK*
TftAt10H
8
PESTICIDE
1
C0W4TT
I
OATE
*
TOTAL
«tLS
SAW LEO
4
* OF
POSITIVE
WEUS
5
TOTAL *
SAMPLES
6
UMBER OF
«WTJVE'
SA#>L£S
7


T*/
NO

i
HCJ.
«
MCt

MCt
*
HCt
Pesticide K
County A
1989/
1.5









1990/6








County B
1987/
1-5







TOTAL DISCRETE
WELLS OR SAMPLES


9
10
10
11
12
12

Pesticide
¦ County A
1989









1990








County B
1987







TOTAL DISCRETE
WELLS/SAMPLES









GRAND TOTAL
DISCRETE
WELLS/SAMPLES


13
14
H
15
16
16

1 The tables are arranged in alphabetical order by the parent pesticide common name. Degradales of parent
pesticides are listed directly following the parent. Any chemical thai is currently or has ever been registered as
a pesticide by the USEPA Office of Pesticide Programs is eligible to be included in these tables. Some chemicals
included in these tables are more commonly associated with industrial processes; however, these chemicals were
at some time also registered as pesticides.
OV-7
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2 County names are listed in alphabetical order for each pesticide that was monitored.
2 Well sampling dates are given by year and month(s). Months separated by a comma (13) means that samples
were taken in these months only. Months separated by a dash (1-5) is the range of months in which sampling
occurred, samples were taken in all months within the range.
J The total number of wells that were sampled at least once during the time period stated in the previous
column.
J Wells with pesticide detections within the time period given in the date column (3). Wells with positive
analytical results were classified based upon whether the results were above or below the MCL. If a pesticide
did not have an established MCL, the lifetime HA level was used and noted at the end of the table. If neither
of these values were established, the well was classified as less than the MCL. Wells were classified based upon
their highest analytical result. Therefore, any well with at least one positive analysis equal to or greater than the
MCL or HA during the time period listed in the date column (3) was classified as > MCL. Any well with at least
one positive analysis but all analyses less than the MCL or HA was classified as < MCL.
£ The total number of samples analyzed for that pesticide within the time period recorded in the date column.
2 Samples with pesticide detections were counted based upon whether the results were above or below the MCL
or lifetime HA as stated in 5 above.
I	The range of positive results in ug/L (ppb) for the time period specified in the date column.
S The total number of discrete wells that were sampled at least once and analyzed for the pesticide listed in
column 1. *See Note
The total number of discrete wells in which the pesticide was detected based upon whether the results were
above or below the MCL. Wells were classified as explained in 5 above, based upon the highest analytical result.
II	Total number of samples analyzed for a particular pesticide,
12	The total number of samples in which the pesticide was detected that are > MCL or < MCL as explained
in 5 above.
13	The grand total of discrete wells sampled in the state for any pesticide. * See Note
14	The grand total of discrete wells with at least one detection of any pesticide. Wells are classified above or
below MCL or HA as explained in 5 above. *See Note
15	Grand total of samples taken in the state. *See Note
16	The grand total of samples with any pesticide detection for the state. Samples were classified as £ or < the
MCL based upon their highest analytical result as explained in 5 above. 'See Note
*Note: Some wells were sampled more than once, (i.e., during several successive years) and some wells were
sampled for more than one pesticide. Therefore, the total number of discrete wells is not necessarily the
arithmetic sum of the wells listed. Similarly some samples were analyzed for more than one pesticide, therefore,
the total number of discrete samples for the state will not be, in all cases, the arithmetic sum for the column.
OV-8
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Figure 3 illustrates the "Wells" table. In this table, ground-water monitoring information
is organized by well type, or use, and source of contamination. In the National
Summary, the information is summarized by state. In the regional volumes, the
information is summarized by county for each state in the region.
FIGURE 3. Wells Table
STATE OF 	
tELLS Br COUNTY
COURT?
TYPES Of WEU.S
SOURCE OF
CONTAMINATION
Of
Murine MATES
1
MOHirOttlMS
2
OTHES
3
TOTAt J i
smpu) | m.
4 f 5
<
no.
5
WAl I i
«mplp } na
< [ 5
<
m.
5
TOTAl
SWU3
4
t
wa
5
<
HCL
5
6
n
i
UN*
«
County A
1

1







•County 8
1

|







TOTAL 9
1

|
1





jl Drinking Water wells include community (municipal), public non-community, and private wells. Public non-
community wells are those that exclusively serve public buildings such as fire stations, schools, or libraries.
2 Monitoring wells, installed solely to monitor ground water for contaminants.
1 Other wells bclude: irrigation wells, stock watering wells, springs, and tile drains.
4	Total number of each type of well sampled in each county.
1	The number of wells per county in which a pesticide was detected. Wells were classified based upon whether
the results were above or below an MCL for any of the pesticides detected. If a pesticide did not have an
established MCL, the lifetime HA level was used. If neither of these values were applicable, the well was
classified as less than the MCL and it was so noted at the end of the table. Wells were classified based upon
their highest analytical result. Therefore, any well with at least one positive analysis greater than or equal to the
MCL or HA was classified as > MCL. Any well with at least one positive analysis but all analyses less than the
MCL or HA was classified as < MCL.
Contaminated wells were placed in one of the following categories based on the opinion of the study director;
6 NFU = Known or Suspected Normal Field Use.
2	PS = Known or Suspected Point Source.
3	UNK=Unknown source of contamination. Wells were categorized as "unknown" if the study director did not
know the source of contamination, or if there was no information available concerning the source of
contamination.
5	Total number of wells in each category.
OV-9
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VI. DATA INTERPRETATION
Ground-water monitoring data in this report have been assembled from numerous
sources, including state and federal agencies, chemical companies, consulting firms, and
private institutions that are investigating the potential for ground-water contamination by
pesticides. These data are extremely valuable, but must be interpreted carefully. In general,
the PGWDB provides a relatively comprehensive overview of the ground-water monitoring
efforts for pesticides in the United States, the pesticides that are being found in the nation's
ground water, and the areas of the country that appear to be the most vulnerable to
pesticide contamination.
Nationally, part of OPP's regulatory mission is to prevent contamination of ground-
water resources resulting from the normal use of registered pesticides. OPP routinely
reassesses the impact that registered pesticides have on the quality of ground-water
resources. The PGWDB will be used to support ongoing regulatory activities, such as
ground-water label advisories, monitoring studies required for pesticide re-registration and
special review activities. In addition, combining the information in the PGWDB with other
environmental fate data and usage data will assist OPP, at an early stage in the regulatory
process, in refining criteria used to identify pesticides that tend to leach to ground water.
On a state or local level, the PGWDB can be used as a reference so that a state may
access data from neighboring states. Evidence that pesticide residues occur in ground water
can be used to target a state's resources for future monitoring and to re-assess pesticide
management practices to prevent future degradation of ground-water quality. The
information presented in this report will also be useful to state and regional agencies when
implementing two pollution-prevention measures being developed by EPA; the Restricted
Use Rule and the State Management Plans outlined in the Pesticides and Ground Water
Strategy. Additional uses for the data in the PGWDB include identification of areas in need
of further study, identification of the intensity of monitoring for particular pesticides, and
graphic display of ground-water monitoring activities and localization of pesticide
contamination.
VII. DATA LIMITATIONS
Despite their apparent value, these data do have limitations and must be used and
interpreted carefully. Differences in study design, laboratory procedures/equipment,
sampling practices, or well use can affect results. Some of the limitations governing the
interpretation of the data in the PGWDB are discussed below:
1) The PGWDB is not a complete data set of all ground-water monitoring for
pesticides in the United States. While we have attempted to include as many
sources as possible, other data exist of which we are not aware or to which we do
not yet have access.
OV-IO
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2)	Monitoring for pesticides in ground water has not been performed in a uniform
manner throughout the United States. Some states have extensive monitoring
programs for pesticide residues, while others have more limited monitoring
programs. In general, more extensive ground-water monitoring programs tend to
be found in the states where pesticide use is heavy. This creates a picture that does
not necessarily represent the overall impact of pesticides on ground-water quality
nationwide.
3)	Differences in ground-water monitoring study design can radically affect the results.
Many monitoring efforts were initiated in response to suspected problems, and
therefore yielded a disproportionately high number of positive samples. These
results cannot be extrapolated to represent a larger region or state. Other efforts
sampled a small number of wells or sampled under conditions in which
contamination was unlikely. Still others were statistically designed studies, intended
to be extrapolated to a specific population of wells. Each of these scenarios
presents a vastly different view of the condition of the ground-water resource
sampled.
4)	Analytical methods and limits of detection have changed over time, and also vary
from laboratory to laboratory. Therefore, comparisons between the results of
different studies and across several years must be performed carefully to avoid
errors in interpretation.
5)	Differences in construction, depth, location and intended use can greatly affect the
likelihood that a particular well will become contaminated by pesticides. Some of
these issues were addressed in the individual study summaries when such details
were available. However, this information was not always provided and tends to
be obscured when large amounts of data are summarized. The reader is cautioned
to read the study summaries carefully and interpret the resulting data summaries
conservatively.
VHI. THE FUTURE
The vulnerability of ground water to contamination by pesticides depends upon a variety
of factors including depth, topography, soil, climate, pesticide use and pesticide application
practices. In some cases, ground water is shallow or closely connected with surface water
and the results of surface activities can be observed within months. More often,
contamination is not observed for many years, allowing cause-and-effect relationships to
become obscured. This report, for the most part, is a retrospective examination of the
agricultural practices of the 1960s and 1970s, the results of which were observed through
monitoring performed 20 years later. The condition of our ground-water resources for the
next 20 years will be greatly affected by how we are handling our chemicals now. Our
challenge today is clearly prospective.
OV-11
-------
EPA's Office of Pesticide Programs (OPP) is planning to publish a summary report of
the data in the PGWDB on approximately a yearly basis. We are interested in presenting
the data in a manner that is the most helpful to as many users as possible. The following
are areas in which we would like to receive comments:
1.	Should future reports summarize only "new data" (those received since the last
report) or all of the data? Should we continue to report very old monitoring data
(10 to 20 years), given the fact that some of these studies had very high detection
limits and monitored for pesticides that are no longer of regulatory interest?
2.	What changes should be made to the maps, graphs and tables? Are they too
detailed or not detailed enough? Are important pieces of information missing? Is
there a clearer or more useful way to present these data?
3.	How are those outside of OPP using the PGWDB?
We appreciate all of those who took the time to comment on the draft version of this
report. Many of the suggestions offered were included in this final version. However, some
very good suggestions regarding changes to the tables could not be included in this report
due to time constraints. These suggestions were taken seriously and will be considered for
future reports.
For the PGWDB to retain its value, OPP must continue to gather and share as much
pesticide monitoring information as possible. Any government agency or private institution
that would like to have its work included in the PGWDB should provide a hard copy of a
final or interim report and the sample and well data in electronic format. PGWDB data
elements are listed on page OV-4 of this report. Electronic media should be accompanied
by a description that includes, hardware compatibility (IBM, Apple etc.), operating system
(DOS, UNIX, OS2), format identification (ASCII or software package name) and a data
dictionary. Anyone wishing to provide comments or data may do so by contacting;
Constance A. Hoheisel
U. S. Environmental Protection Agency
Office of Pesticide Programs
Environmental Fate and Effects Division (H7507C)
401 M Street, SW
Washington, DC 20460
Telephone: 703-305-5455
FAX: 703-305-6309
OV-12
-------
REFERENCES
1.	Hoheisel, C. and Davies-Hilliard,L. Pesticide Information Network U.S. Environmental
Protection Agency, Office of Pesticide Programs, Washington D.C.,1987. Database;
703-305-5919. User Support: 703-305-7499.
2.	Spencer, D.A. The National Pesticide Monitoring Program. U.S. Environmental
Protection Agency, 1974. Summary document published by The National Agricultural
Chemicals Association.
3.	U.S. Environmental Protection Agency. The National Survey of Pesticides in Drinking
Water Wells. Washington, D.C., 1990. For Fact Sheets contact: EPA Public
Information Center, 202-260-2080. For copies of reports contact: National Technical
Information Service (NTIS), 703-487-4650.
4.	Williams, W.M., Holden, P.W,, Parsons, D.W. and Lorber, M.N. Pesticides in Ground
Water Data Base-1988 Interim Report. U.S. Environmental Protection Agency, Office
of Pesticide Programs (H7507C), Washington, D.C.,1988.
5.	U.S. Environmental Protection Agency, Office of Information Resources Management
STORET (Water Quality Database). Washington, D.C. User assistance: 1-800-424-
9067.
6.	U.S. Geological Survey, National Water Data Exchange. WATSTORE(Water Quality
Database). Reston, VA. For further information: 703-648-5671.
7.	U.S. Environmental Protection Agency, Office of Water. Drinking Water Regulations and
Health Advisories. Washington, D.C., November 1991. Tel: 202-260-7571.
8.	U.S. Environmental Protection Agency, Office of Ground Water and Drinking Water
Definitions for the Minimum Set of Data Elements for Ground-Water Quality.
Washington, D.C.,1991.
OV-13
-------
WeN Sampling by State
(Total Number of Wells with Pesticide Detections / Total Number of Wells Sampled)
Region VII
216/926
343/2280
KS
36/214
MO
117/324
Total Wells Sampled
per State
m	> i00e
^	50L to 1030
SI 101 to 500
E3 51 to 100
l-'-i	1 to 50
~	No wells sampled
OV-14
-------
REGION 7
WELL STATUS BY STATE
DESENDING BY NUMBER OF WELLS WITH DETECTIONS
NE

343

'ft r. ,vrtfyfi-.xrximt r, rr, iff.Xrfffiftrs.v
IA
216
MO
324
KS
£~7\
A'
ZL
36
214
2,280

o
200	400	600
WELL COUNTS
800
1,000
WELLS WITH DETECTIONS >= MCL O WELLS WITH DETECTIONS
TOTAL WELLS SAMPLED
OV-15
-------
1
*	I
Pesticides in Ground Water Database -1992 Report
STATE SUMMARIES
^ .p.
-------
Well Sampling by County
(Total Number of Welts with Pesticide Detections / Total Number of Wells Sampled)
owa
¦>;17/3p
:0/ll>
10/18

: >:::3/6
2/15
C/6-:'i:-;4/9
:C/3i:
W/.43x:

0/4':'vl/3
Pesticides Detected
Fonofos
Total Wells Sampled
per County
m > 1000
m	501 to 1033
S3	101 to 500
CZ3	51 to 100
ED	1 to 50
~	No wells sampled
Alachlor
Atrazine
Carbofuran
Cyanazine
Metolachlor
Metribuzin
Simazine
Sulprofos
Terbufos
2,4-D
3-Hydroxy Carbofuran
3-Keto Carbofuran
DCPA
Des—Ethyl Atrazine
Des-Isopropyl Atrazine
Hydroxy Alachlor
Pendimethalin
Picloram
Propachlor
Trifluralin
-------
Intentionally Blank Page
-------
IOWA
OVERVIEW OF STATE LEGISLATIVE AND ENVIRONMENTAL POLICIES
REGARDING PESTICIDES IN GROUND WATER
Iowa's ground water quality monitoring program was begun in 1982 and is an extension of
a previous program that had been in operation since 1950 by the Iowa State Health
Department. This early program consisted of nonspecific, periodic sampling of untreated
water from municipal wells . The current program has two objectives: 1) a fixed objective -
to describe and assess the long-term chemical quality of surflcial aquifers in Quaternary
deposits and shallow bedrock aquifers of Iowa, and 2) a variable objective - to direct
sampling and water-quality assessment toward new or emerging areas of ground water
quality concern.
A network of monitoring wells was designed to meet data needs solicited from several State
and Federal agencies. The network initially consisted of 1,200 municipal wells, but was
expanded over time to include domestic and test wells. Wells were selected based on
accessibility, availability, well integrity, and reliable geologic information. Wells were
monitored eveiy 2, 4 or 6 years depending upon the depth of the well. From 1982-1987
water samples were analyzed for common minerals, nutrients and trace metals. In addition
a small percentage of wells finished in superficial aquifers were sampled for priority
contaminants and pesticides each year.
In 1987 Iowa provided this program with stronger legislative support through the Iowa
Groundwater Protection Act. The principal objectives of this Act are; 1) to provide
education to increase awareness and understanding of the responsibility the people of Iowa
have to protect their ground water; 2) to promote and fund research to develop methods
to improve resource management and understand the effects of environmental contaminants;
and 3) to implement demonstration projects that help Iowans implement improved
technologies that minimize or eliminate adverse effects on ground water resources.
In 1988 the monitoring program was altered to reflect the increasing concern and the new
legislation to protect the ground water resources of Iowa, particularly from agricultural
chemicals. In addition to the overall objectives of the program, the 1988 program has these
specific objectives: 1) to describe and assess the long-term chemical quality of surficial, deep
(greater than 150 ft) and bedrock aquifers in Iowa; 2) to focus water quality sampling and
assessment on the problem of current degradation of shallow (less than 150 ft) ground water
resources by agricultural chemicals, which will include seasonal and geographic evaluation
of contaminants detected in shallow ground water; and 3) to focus water quality sampling
and assessment on the problem of current degradation of shallow ground water resources
by synthetic organic chemicals.
Analyses for pesticides in water are performed at the University of Iowa Hygienic
Laboratory.
7-IA-3
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PESTICIDE
DETECTION
LIMIT
ug/L
2,4-D
0.1
2,4>TP (Silvex)
0.1
Alachlor
01
Aldrin
0.04
Atrazine
0.1
BHC (a3 J,«)
0.04
Butylate
0.1
Carbofuran
0.1
Chloramben
0.1
Chlordane
0,2
Chlorpynfos
0.1
DDT, DDD, DDE
0.04
Dicamba
0.1
Dieldrin
0.04
Pesticides Analyses Routinely Performed by the
University of Icuva Hygienic Laboratory
PESTICIDE
DETECTION
LIMIT
"g/L
Endosulfan
0.04
Endrin
0.04
Ethoprop
0.1
Fonofos
0.1
Heptachlor
0.04 1
Methyl Parathion

Metolachlor
0.1
Metribuzin
0.1
Phorate
0.1
Sulprofos
0.1
Teibufos
0.1
Toxaphene
Oi
Triflurslin
0.1


Narrative from: Petrov. Mark G. ct.al: Ground Water Quality Monitoring Program io lewa:
Nitrate and Pesticides io Shallow Aquifers; US Geological Survey, Water Resources
Investigations Report, 88-4123, 1988; Detection limits from reference (3) below.
REPORTED STUDIES ON PESTICIDES IN GROUND WATER
Hallberg, George K, Bernard E. Hoyer, E, Arthur Bettis, 111, Robert D. Libra; Hydrogeology,
Water Quality and Land Management in the Big Spring Basin, Clayton County, Iowa; Iowa
Department of Natural Resources; Open File Report 83-3; June 1983
Hall berg, George R, Robert D. Libra, E. Arthur Bettis, III, Bernard E. Hoyer; Hydrogeology,
Hydro geologic and Water Quality Investigations in the Big Spring Basin, Clayton County,
Iowa; 1983 Water Year; Iowa Department of Natural Resources; Open File Report 84-4;
June 1984
Objectives
These studies are part of a program initiated to study the hydrogeology of the karst-
carbonate aquifer area in northeast Iowa. The objectives of this program were to 1) provide
detailed information about the nature of the degradation of ground water quality in the
7-IA-4
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sinkhole regions and shallow carbonate aquifer areas; 2) evaluate possible programs to
alleviate problems; and 3) provide the technical information needed for public use and
education. The first phase of the study provided a regional assessment of the physical
nature of the karst regions and documented significant contamination of ground water by
nitrates in karst areas and regions where the carbonate bedrock aquifers occur at shallow
depths below the land surface. The second phase of the program was undertaken to provide
a controlled and detailed assessment of a single karst basin. This detailed study provides
a more thorough assessment of the mechanics of ground water degradation in these areas.
Methods
Ground water samples were collected from existing domestic water wells. During the initial
phase of this study 271 wells were inventoried. Water samples were collected for nitrate
and bacterial analyses from approximately 125 wells which had the best information and
allowed the determination of the aquifer supplying the well. From the initial inventory, a
network of sites was selected for water-quality monitoring throughout the duration of the
project. Eighteen (18) wells were selected which were representative of the spectrum of
geologic and hydrologic conditions in the basin and the range of water quality found during
the inventory. Also in the monitoring network is the Big Spring and surface water sites.
Water samples were collected for pesticide analysis at varying times throughout this study.
The methods of analysis used can identify most of the commonly used pesticides and
chlorinated hydrocarbon compounds.
During 1983 the water quality sampling scheme was altered for that of 1982 because of
modification in objectives, lessons learned from the prior year's sampling, and available
funding, Less effort was placed on well monitoring while the Big Spring and various surface
water and tile line sites were monitored much more intensively. This was done to further
isolate the details of how the hydrogeologic system of the Big Spring basin responds to
hydrologic events. Big Spring was sampled at least weekly for analyses of nitrate and
pesticides. During particular 'runoff events' samples were often collected every one or two
hours. For water year 1983, 248 nitrate samples and 81 pesticide samples were analyzed
from Big Spring, In contrast only 17 samples from 6 wells were analyzed for the presence
of pesticides.
Results
No pesticides were detected in samples taken from Big Spring during the first six months
of the study (November 1981-April 1982). This period correlated with winter base flow and
spring snowmelt conditions. Atrazine was first detected in Big Spring samples in early May,
one to two weeks after chemicals were applied to the fields within the basin. Through May
and June cyanazine and alachlor were also present in water from the spring. Atrazine
concentrations ranged from 0.2-2.5 ug/Lwith most above 0.5 ug/L. Cyanazine and alachlor
levels did not exceed 0.2 ug/L. During the summer/fall base flow recession when little or
no recharge occurred, cyanazine and alachlor fell below detection limits. However, atrazine
was present throughout the year at concentrations that slowly decreased to 0.1 ug/L.
7-IA-5
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Similarly, atrazine was first detected in well waters in late May-early June. Thirteen of the
eighteen samples contained detectable amounts of atrazine (range 0.05-0.45ug/L).
Subsequent sampling from these wells showed decreasing levels of atrazine with most falling
below detection limits. Hie only other pesticide detected was cyanazine, in a well shown
to be in direct connection with the major conduit system associated with Big Spring. Wells
located beneath thick Maquoketa Shale or lying along the ground water basin divide did not
have detectable atrazine residues. The highest atrazine concentrations occurred near the
major conduit zones leading to Big Spring.
There was a dramatic change in land management in the basin because of the USD A
Payment-in-Kind program. Reduction in total corn acreage and slight reductions in fertilizer
rates produced about a 30-40% decrease in N-fertilizer application for the basin and a
somewhat lesser decrease in pesticide use.
Both years had higher than normal precipitation. However, water year 1983 totaled 44.5
inches; and increase of 31% from water year 1992. The greater water discharge and
particularly the greater ground water movement through the soil in infiltration caused a
significant increase in chemical discharge from the basin. The discharge of the herbicide
atrazine in ground water increased 120% over water year 1992. However, this still only
amounted to about 31 lbs of atrazine. Atrazine was the only pesticide detected in ground
water year-round, with concentrations ranging from 0.1-5.1 ug/L. Four other commonly
used herbicides were intermittently detected in ground water but primarily during run-
recharge events in May, June, and July. These herbicides were (maximum concentrations
in parentheses) alachlor(0.63ug/L), cyanazine (1.2ug/L), metolachlor (0.62ug/L), and
fonofos (O.llug/L).
Large spring or early summer runoff and discharge events can significantly affect the total
pesticides lost in water. During the two week period of large runoff-discharge events in late-
June and early-July, about 35% of the total discharge of atrazine occurred. The amount
discharged during this period alone equaled about 80% of the atrazine discharge in water
year 1992.
Libra, Robert D.; George RMallberg, Gale G. Ressmeyer, Bernard E. Hoyer; Groundwater
Quality and Hydrogeology of Devonian-Carbonate Aquifers in Floyd and Mitchell Counties,
Iowa; Iowa Department of Natural Resources; Open File Report 84-2; 1984
Objectives
The Floyd-Mitchell Study is the third phase of an assessment of the hydrogeology and
ground water quality of karst-carbonate aquifers in northeast Iowa. This phase of the
assessment was undertaken to 1) gather detailed data on the hydrogeology and ground
water quality of an area where karst developed in the Devonian carbonate rocks in a belt
parallelling the Cedar River; 2) assess the ground water quality in different hydrogeologic
settings; and 3) further study how surficial contaminants are delivered into carbonate
aquifers.
7-IA-6
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1
Mgthpfo
Ground water samples for this study were taken from existing domestic water wells. As a
first step towards evaluating ground water quality in this area 55 rural water supply wells
were inventoried. Water samples were collected for nitrate and bacterial analyses from 48
wells, one spring, tile drains and surface water sites. From the initial inventory, conducted
in December of 1982, a network of sites was selected for water-quality monitoring
throughout 1983. Sixteen wells were selected which were representative of the spectrum of
geologic and hydrologic conditions in the basin and the range of water quality found during
the inventory. Also monitored were 2 surface water sites, 2 tile line outlets, and Osage
Spring. As monitoring progressed 3 wells and one surface water site were added to the
network. Water samples were collected for pesticide analysis at varying times throughout
this study. The methods of analysis used can identify most of the commonly used pesticides
and chlorinated hydrocarbon compounds.
Result?
A variety of pesticides was detected in all three of the relatively 'unprotected' geologic
regions-Shallow Bedrock, Karst, and Incipient Karst. In all three areas, 70-80% of wells
sampled had detectable levels of pesticides. The herbicides atrazine, alachlor, cyanazine,
metribuzin, and metolachlor were all detected in ground water prior to the 1983 application.
Concentrations ranged from 0.11-3.30 ug/L with total pesticide concentrations as high as 20
ug/L. These results indicate these herbicides are persisting in ground water and/or soil year
round. There were no pesticides detected in the carbonate aquifers of the Deep Bedrock
regions.
Kelley, Richard; Synthetic Organic Compound Sampling of Public Water Supplies, Iowa
Department of Water, Air and Waste Management, April 1985
Kelley, Richard; Monica Wnuk\ Little Sioux River Synthetic Organic Compound Municipal
Well Sampling Survey, Iowa Department of Water, Air and Waste Management, March
1986
Kelley, Richard; 1986 Little Sioux River Pesticide Monitoring Report, Iowa Department of
Natural Resources, March 1988 (515-281-5145)
th
The above three studies are a related effort to monitor the alluvial aquifer of the Little
Sioux River. The objectives of the initial survey were:
1.	to identify those systems contaminated by synthetic organic compounds (SOC)
including pesticides;
2.	to identify, where possible, any apparent patterns of contamination which
could be related to local or regional geologic or geographic conditions; and,
7-IA-7
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3. to assess the accuracy and validity of previous sampling which suggested
that there may be systematic deterioration of alluvial systems across the state.
Sampling began in May of 1984. The findings in 1984 and 1985 prompted additional
monitoring in 1986. The objectives of the 1986 monitoring were:
1.	to better understand the relationships between pesticide concentrations in
ground water and various environmental factors; and
2.	to identify possible sources of pesticide contamination.
Methods
The regional staff of the Department of Water, Air and Waste Management sampled 128
wells providing water to 58 public water supplies across the State of Iowa. The sampling
locations were selected on the basis of their proximity to industrial areas, hazardous waste
sites, spills or abandoned dumps, the detection of SOC's in previous sampling, or elevated
nitrate levels. Seventy (70) of the selected wells were for the presence of 34 pesticides.
In May of 1985 water samples were collected from 25 wells at the well head and before any
treatment. The wells sampled serve 12 municipal public water supplies along the Little
Sioux River in northwestern Iowa.
In 1986 eight (8) wells serving six public water supplies, one well serving a private water
supply, one monitoring well, and the Little Sioux River were sampled. Six of the public
water supply wells were Finished to the alluvial aquifer, one public and the private water
supply well were finished to Pleistocene formations and one public water supply well was
finished to the bedrock. All of the public water supply wells had been monitored in the
1985 study. Pesticides had been detected in 7 of the 8 public water supply wells. The well
finished in bedrock did not have pesticides in 1985 and served as a control well for 1986.
The private well was chosen because it was located on a high pleistocene terrace,
construction features of the well were known, and the only identifiable source of
contamination was the widespread application of pesticides to the surrounding farm fields.
In the 1986 study, sampling was conducted between March 15 and July 30. Initial sampling
was completed prior to the planting season at all public water supply wells, except the
control. Subsequent sampling was carried out after approximately 70% of the crop had
been planted. Samples taken during these two studies were analyzed for the pesticides listed
in the previous table and other SOC's.
Results
In the 1984 study one or more SOC's and/or pesticides were detected in 57 wells serving
33 water supplies. These 33 supplies were distributed fairly evenly across the State with the
exception of north-central Iowa. The absence of contaminants in the supplies monitored in
this region appears to be related to the fact that six out of eight supplies monitored in that
region use wells finished to bedrock. Six of the 34 pesticides analyzed for were detected in
7-IA-8
-------
at least one water supply. The most commonly detected of all contaminants was the
herbicide atrazine, appearing in 24 wells from 14 supplies. Cyanazine appeared in 6
supplies.
In the 1985 study one or more of eleven contaminants were found in nine wells serving six
of the supplies sampled. Hie contaminants could be divided into three groups: industrial
solvents; aromatic hydrocarbons; and pesticides. The greatest array and most frequently
detected compounds were pesticides. Ten samples collected from seven wells, serving five
public water supplies were found to have measurable residues of pesticides present. The
insecticide terbufos and the herbicide atrazine were the most frequently detected
compounds. Other pesticides detected were cyanazine, metribuzin, metolachlor, alachlor
and sulprofos. Sulprofos is not registered for use in Iowa.
In the 1986 study, pesticides were detected in eight of ten wells (36 of 40 samples). No
pesticides were detected in the control well or in the monitoring well. Multiple residues
were detected in six of the eight wells (26 of 40) samples. Atrazine was the most commonly
detected and carbofuran was the least detected pesticide. Others detected were cyanazine,
alachlor, metolachlor, and metribuzin. Because of the high rate of occurrence in the 1985
study, samples were analyzed for terbufos and terbufos sulfone. However, neither of these
were detected in 1986.
Conclusions
The authors felt that the results of these studies support the findings of other studies
conducted in Iowa with regard to the appearance of agricultural chemicals in shallow ground
water. Shallow alluvial systems are at highest risk of becoming contaminated.
In 1985 climatic conditions restricted planting to a short period of time. Approximately 60%
of the crop was planted over a ten day period; terbufos was applied at this time. In addition
2.5 inches of rain fell in the time prior to and during sampling in 1985. These conditions
were not repeated in 1986, which may explain the absence of terbufos in samples taken that
year. However, the appearance of terbufos in ground water samples in 1985 demonstrated
that even chemicals which decay rapidly can impact ground water resources under certain
climatic conditions.
The following five studies are part of, or extensions of Iowa's ongoing study of alluvial
aquifers. The major objectives of these studies were 1) to evaluate the overall availability
and quality of the ground water from these aquifers; and 2) evaluation of the spatial and
temporal water quality variability with particular reference to nitrate and pesticide
concentrations. Other objectives included comparison of the quality of surface water with
that of ground water in the same areas, and comparison of water quality between pumping
and non-pumping wells.
7-IA-9
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Detroy, Mark G; Ronald L. Kuzniar, Occurrence and Distribution of Nitrate and Herbicides
in the Iowa River Alluvial Aquifer, Iowa--Mav 1984-November 1985; US Geological Survey;
University of Iowa Hygienic Laboratory; Iowa Department of Natural Resources; Water
Resources Investigations Report 88-4117; 1988
Methods
Water quality monitoring consisted of sampling 25 test wells, 33 domestic wells, 10
municipal wells and nine surface water sites (three on the Iowa River and six on its major
tributaries) in Iowa County. Six of the test wells were nested to allow for sampling at
various depths. Samples were collected from May 1984 to November 1985. Selected
samples were analyzed for the herbicides atrazine, cyanazine, metribuzin, alachlor,
metolachlor, and trifluralin.
Results
All of the above herbicides were detected in ground water samples. The maximum
concentration of atrazine in ground water samples was 2.4 ug/L; the maximum
concentration of metribuzin was 8,1 ug/L. Area streams also contained herbicides in
concentrations generally larger than concentrations in ground water.
Detailed sampling of vertical profiles using well nests indicated that the distribution of
herbicides is not vertically homogeneous. Herbicides were detected more frequently and
at higher concentrations at shallower depths.
Seasonal variation of herbicide occurrence was also apparent. For nested wells the
variations were greater at the shallower sampling depths. Seasonal variations of herbicide
concentrations illustrate that these chemicals move quickly from surface application to
shallow underlying aquifers. Herbicides can be detected in ground water soon after
chemical applications, usually within 6 weeks. At a municipal well adjacent to a stream,
similar seasonal concentrations of atrazine were detected for both ground and surface water
samples. Surface water may be a source of herbicides in adjacent ground water.
Thompson, Carol A., Donald L. Koch; Water Resources of the Ocheyedan - Little Sioux
Alluvial Aquifer; Open File Report 86-3; Iowa Department of Natural Resources; December
1986; 319-335-1581, 319-355-1575
Methods
Water quality sampling was performed monthly on 31 wells at 19 sites and 10 surface water
sites. Pesticide analyses were performed on samples from a smaller subset of 17 wells from
9 sites. Sites were located in the counties of Cherokee, Woodbury, Osceola, O'Brien, and
Clay.
7-IA-10
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Results
The herbicides atrazine and metolachlor, and the insecticide carbofuran were detected in
three wells. These wells were all shallow (less than 30 ft,). A sample from one well, with
a screen interval between 7-9 ft., contained residues of ail three pesticides.
Thompson, Carol A., Donald L. Koch; Water Resources of the Rock River Alluvial Aquifer;
Open File Report 87-1; Iowa Department of Natural Resources; January 1987; 319-335-
1581, 319-355-1575
Methods
Water quality sampling was performed on 12 wells at 8 sites and 2 surface water sites.
Pesticide analyses were performed on samples from a smaller subset of 7 wells from 5 sites.
Sites were located in Lyon and Sioux Counties.
Results
The herbicide atrazine and the insecticide carbofuran were detected at low levels in three
wells. These wells were all shallow (less than 20 ft.).
Thompson, Carol A.; Nitrate and Pesticide Distribution in the West Fork Des Moines River
Alluvial Aquifer; Technical Information Series 18; Iowa Department of Natural Resources;
April 1990; 319-335-1581
Methods
Samples for water quality and/or nitrate analysis were collected from 66 monitoring wells
at 12 sites and 9 surface water sites. Wells were nested at all sites. Monitoring sites were
located in Palo Alto, Pochahontas and Humbolt Counties. A smaller subset of samples from
9 wells at 4 sites and one surface water site was analyzed for pesticides.
Results
Two pesticides were detected in alluvial ground water and four were found in river water.
Atrazine was detected in ground water at two sites (3 wells). Alachlor was the only other
pesticide detected in ground water and was found in the upper and middle wells at one site
at levels close to the MCL of 2 ug/L (.99-1.1 ug/L). Atrazine, cyanazine, metolachlor and
alachlor were found in surface water.
7-1 A-11
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Thompson, Carol A., Paul E. VanDorpe, Donald L. Koch; Water Quality Monitoring of the
Nishnabotna Alluvial System; Open File Report 88-1; Iowa Department of Natural
Resources; 1988; 319-335-1581, 319-335-1575
Methods
The monitoring network for this study consisted of 28 wells (16 municipal wells and 6
monitoring well sites with 2 wells at each site) and four surface water sites. All wells at
monitoring sites were nested pairs (separate wells finished at different depths within the
aquifer and installed in the same drill hole). Wells were located in Pottawatamie, Cass,
Mills, Montgomery, Fremont, and Page Counties. Pesticide samples were collected at eight
of the municipal wells and all twelve of the monitoring wells during May, June, and July
1987. In addition surface water samples were analyzed for pesticides in June and July.
Samples were analyzed for nineteen pesticides (ten common herbicides and nine
insecticides).
Results
Detections of pesticides occurred at nine municipal wells. Atrazine was detected most
frequently with detections ranging from 0.16 ug/L to 0.88 ug/L. Metolachlor was detected
twice at concentrations of 0.1-0.64 ug/L. Cyanazine was detected once at a concentration
of 1.7, simazine was detected once at a concentration of 0.98 ug/L and alachlor was
detected once at a concentration of 0.87 ug/L. Pesticides were not detected at any of the
monitoring wells. Pesticide concentrations varied through time and were usually highest
following a rainstorm immediately after application.
Detroy, Mark G.; Pamela KB. Hunt, Maureen A. Holub; Ground-Water Quality Monitoring
Program in Iowa: Nitrate and Pesticides in Shallow Aquifers; U.S. Geological Survey,
Water-Resources Investigations Report 88-4 123, University of Iowa Hygienic Laboratory,
Iowa Department of Natural Resources. 1988
Objectives
Concern exists about the occurrence of agricultural chemicals, primarily nitrate and
pesticides, in shallow ground water. In response to this concern, the focus of the Iowa
ground-water quality monitoring program has shifted to emphasize the nonpoint
contaminants. The objective of the program are to describe and assess the long-term
chemical quality of the principal aquifers in Iowa and to direct water qualtiy assessment and
sampling toward regional ground-water qualtiy concerns.
Design
In the spring of 1985, emphasis was placed on the analysis of pesticides in water samples
collected from wells completed in surficial aquifers in Quaternary deposits from wells less
that 200 feet deep or both. Samples from these wells were analyzed for nitrate and selected
pesticides. Water samples were collected from 515 individual shallow wells.
7-1 A-12
-------
Results and Conclusions
Detectable concentrations of at least one pesticide, including alachlor, atrazine, cyanazine,
dicamba, metolachlor or metribuzin were detected in 20% of the samples. Atrazine was the
most prevalent pesticide. Concentrations of atrazine ranging from 0.10 to 21 ug/L were
detected in 18% of the samples. The results of the monitoring program indicate a
relationship between decreasing well depth and the presence of detectable concentrations
of nitrate and pesticides. Most nitrate and pesticide detections were in areas where surficial
aquifers in Quaternary deposits are the principal source of ground water. Pesticides were
detected in samples collected throughout the year; samples collected in late spring and early
summer more frequently contained pesticide than other samples.
Hallberg, G. R; B.C. Kross, R.D. Libra, L.F. Burmeister. L.M.B. Weih, C.F. Lynch, D.R.
Bruner, M.Q. Lewis, KL. Cherryholmes, J.K Johnson, MA. Culp, The Iowa State-Wide Rural
Well-Water Survey, Iowa Department of Natural Resources, University of Iowa; Technical
Information Series 17; February 1990
Objectives
As part of the implementation of the Iowa Ground Water Protection act of 1987 the Iowa
Department of Natural Resources and the University of Iowa conducted a one-time survey
of the quality of private drinking water supplies used by rural Iowans. The intent of the
Iowa State-Wide Rural Water-Well Survey (SWRL) is to provide a statistically valid state-
wide generalization of the conditions of private water supplies. SWRL was designed to
determine what portion of the private rural wells in Iowa are affected by various
environmental contaminants and what portion of rural Iowa residents are utilizing well water
containing these contaminants. In addition this study examines the relationships between
contamination and factors such as well construction and placement, farm chemical handling
practices, spills and back siphoning accidents, local hydrogeologic factors, land use, and
disposal. SWRL also examines the extent and use of water treatment systems, basic family
health, development of pesticide analytical methods and the development and testing of
toxicity screening methods for environmental contaminants in rural well water. Because
of its statistical design the results of the SWRL Survey and/or its population of wells and
residents may also serve as a baseline for 1) developing a long-term monitoring program
for private water supplies; 2) designing water quality sampling in other programs; 3)
measuring future trends and changes in ground water and /or rural private drinking water
quality; and 4) designing and collecting data for other types of surveys.
Methods
To provide a statistically valid framework, a systematic sample, stratified by rural population
density was designed. A target of 698 sites was defined based on statistical considerations,
available funds, and logistical constraints. The systematic framework was defined using
every 5-minute intersection of latitude and longitude in the state. The intersections chosen
for sampling sites were distributed proportionally through the population, based on county
7-IA-13
-------
level rural population density. The drinking water well closest to each chosen intersection
was selected for sampling. At the time of sampling well owners were interviewed to collect
well construction, land use, and general health information.
The effect of temporal variability in ground water quality was addressed by sampling 10%
of all sites a second time during a different season and by sampling quarterly all sites within
a county typifying six general hydrogeologic regions in Iowa. In addition routine sampling
was seasonally dispersed throughout the state.
All primary samples were analyzed for total coliform bacteria, nitrate, major inorganic ions,
27 commonly used pesticides and selected pesticide metabolites. The final SWRL well
water sample was 686 sites based on completion criteria set for site inventory, sample
collection and analysis, and completed health questionnaires.
Results
Sixteen pesticide compounds were detected in the SWRL well water samples, including 11
parent compounds and 5 environmental metabolites. In descending order, the most
commonly detected pesticides were atrazine, des-ethyl atrazine, des-isopropyl atrazine,
metribuzin, pendimethalin, metolachlor, alachlor, cyanazine, picloram, 2,4-D, propachlor,
trifluralin, dacthal, 3-hydroxy carbofuran, 3-keto carbofuran, and hydroxy alachlor. Multiple
residues were detected in all regions of the state.
The mean concentrations of these pesticides on a state wide basis were generally less than
1 ug/L, and typically were below the recommended lifetime heath advisory levels. Lifetime
health advisory levels were exceeded at eight sites: five with atrazine , two with alachlor,
and one with trifluralin. On a state-wide basis, 1.2% of the private rural drinking water
wells in Iowa are estimated to be contaminated with a pesticide exceeding the EPA
recommended lifetime health advisory levels.
Pesticide contamination showed statistically significant variation regionally. A larger portion
of wells in western regions have both single and multiple pesticide detections. State wide
shallow wells (< 50ft) are significantly more likely to be contaminated with a pesticide.
Approximately eighteen percent of private shallow wells are contaminated with one or more
pesticides, while about twelve percent of deeper wells are contaminated.
7-IA-14
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



VELl,
RE8B.TS.	
SAW>tE RESULTS. .
RAKCE OF
CONCEN-
TRATIONS
(UB/O
PESTSCIO*
CCUKTY
DATE
TOTAL
WELLS
SAMW.EB
# Of
POSIT 5 YE
WELLS
JOTAl #
SAMPLES
tWMBER OF
POSITIVE
SAMPLES


(YEAR
mm

t
HCi
. V
net.

t
MO.
*
MCL
2,4,5-T
ADAIR
1988
6
6
0
0
12
0
0


ADAMS
1988
12
4
0
0
8
0
0


ALLAMAKEE
1988
8
10
0
0
20
0
0


APPANOOSE
1988
9
5
0
0
10
0
0


AUUUBOK
1988
6
3
0
0
6
0
0


BENTQM
1989
4
8
0
0
16
0
0


aucr haw
1989
1,2
13
0
0
26
0
0


ftOONE
1988
5
5
0
0
10
0
0


WEMER
1988
8
9
0
0
18
0
0


BUCHANAN
1989
2.5
11
0
0
22
0
0


BUEUA VISU
1988
6
7
0
0
14
0
0


BUTLER
1988
S
7
0
0
14
0
0


CALHOUN
1988
6
4
0
0
8
0
0


CARROU
1989
3
7
0
0
14
0
0


CASS
1988
7
5
D
0
10
0
0


CEDAR
1989
L
7
0
0
14
0
0


CERRQ MRDO : ;
1988
8
7
0
0
14
0
0


CHEROKEE
1989
3
4
0
0
8
0
0


CHICKASAW
1988
4
6
0
0
12
0
0


• CLARKE
1988
5
4
0
0
8
0
a

7-IA-15
-------
PESTICIDE SAMPLING IK TN6 STATE OF IOWA
,


WELL
RESULTS
SM»L
RESULTS
RANGE Of
cwcEK-
TRATlOtre
£STlC»fi€
cotmt
DAT!
TOTAL
WELLS
SAMPLED
* 01
POSITIVE
WEUS
TOUl #
SAMPLES
whber or
POSITIVE
SAMPLES


m*R
M»T»)

t
act
<
mi

I
Ma
«
*CL
(2,4,5-T)
CLAY
1988
8
6
0
0
12
0
0


cuvn*
1988
8
10
0
0
20
0
0


aiNTOtt
1988
12
8
0
0
16
0
0


CRAWFORD
1988
10
6
0
0
12
0
0


frALLAS
1988
10
2
0
0
4
0
0



1989
3
11
0
0
22
0
0


DAVIS
1988
5
4
0
0
B
0
0


DECATUR
1988
5
5
0
0
10
a
0


SELAWARE
19B8
9
1
0
0
2
0
0



1969
4
12
0
0
24
0
0


DCS MOINES
1988
8
1
0
0
2
0
0



1989
5
6
0
0
12
0
0


DiOUNW*
1988
S
6
0
0
12
0
0


DUBUQUE
1988
8
1
0
0
2
0
0



1989
6
11
0
0
22
0
0


EMKET
1988
a
1
0
0
2
0
0



1989
1
2
0
0
4
0
0


FAYETTE
1988
4
8
0
0
16
0
0


fLCurO
1988
8
7
0
0
14
0
0


FRANKUJi
1989
1
4
0
0
8
0
0

7-IA-16
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WElt «SM.TS
SAHPIE RESW.TS ,
RANGE OF
COWCEN-
TSATlQtrt
(U9/U
PESTJCloe
COUNTY
DATfc
10TAL j * OF
WELLS { fO$3TJVE
SAMPLED | HELLS
TOTAL # NUMBER OF
SAMPLES | POSITIVE
| SAWLCS


CYfAR
WNTK)
it
j:*Ct
<

I
1 net
*
«CL
(2,4,5-T)
FSEHOMT
1988
6
4
0
0
8
0
0


CREEKS
1988
6
10
7
0
0
14
0
0


fflRJWJY
1988
10
5
0
0
10
0
0


GUTHRIE
1988
9
5
0
0
10
0
0


HAMILTON
1988
r
5
0
0
10
0
0

•
HANCOCK
1988
5
6
0
0
12
0
0


HARDIN
1989
3
6
0
0
12
0
0


HARRISOK
1988
6
6
0
0
12
0
0


HEBftY
1988
8
5
0
0
10
0
0


HOWARD ¦¦ .
1989
1
6
0
0
12
0
0


KU*80UH
1988
6
4
0
0
8
0
0


ID*
1988
4
4
0
0
8
0
0


IOWA
1988
9
1
0
0
2
0
0



1989
5
6
0
0
12
0
0


jackso* ;
1988
5
7
0
0
14
0
0


JASPER
1988
7
n
15
0
0
30
0
0


JEFFERSOH
1989
6
4
0
0
8
0
0


JOHN SOtt
1988
9
11
11
0
0
22
0
0


JOMES
1988
9
7
0
0
14
0
0

7-IA-17
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



UELl HESULTS
SAHPL
^ESutys
RANGE OF
CONCEH-
TRAI10«S
(ub/U
PESTICIDE
COUKTY
date
TOTAU
VEUS
sampled
# OF
POSITIVE
WEILS
TOTAL #
SAMPLES
HUMBtfi OF
POSITIVE
SAMPLES


(YEAR
HOHTH)

%
Ha
<
HCL

I
HCl
XCl
(2,4,5-T>
KEOKtBC
1988
7
4
0
0
a
0
0


KOSSUTH
1988
7
10
9
0
0
18
0
0


L£E
1988
10.11
12
0
0
24
0
0


LIttM
1988
6
13
0
0
26
0
0


LOUISA
1988
4
6
0
0
12
0
0


LUCAS
1988
7
3
0
0
6
0
0


LYON
1988
6.8
5
0
0
10
0
0


MADISO#
1988
9
1
0
0
2
0
0



1989
1
7
0
0
14
0
0


MAHASKA
1988
10
1
0
0
2
0
0



1989
4
6
0
0
12
0
0



1988
10
1
0
0
2
0
0



1989
4
11
0
0
22
0
0


MARSHAL!
1988
7
6
0
0
12
0
0


WILIS
1988
5
6
4
0
0
8
0
0


M1TCHEU
1989
1
7
0
0
14
0
0


HOHOHA
1988
10
5
0
0
10
0
0


MONROE
1988
7
3
0
0
6
0
0


HONTGOMERr
1988
9
5
0
0
6
0
0


: MUSCAT IKE
1988
4.5
10
0
0
20
0
0

7-IA-18
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA

1
i
WEU
8£$Ui.TS „ ,
	SAf^kC RESW-TS
HAWSE or
COMC€K*
THAHOttS
pgsrjciai
COUNT*
		
0ATE
total
WEILS
SAX Pi ED
« of
POSITIVE
WEILS
TOTAL #
SAMPLES
WWMR Of
POSITIVE
SAMPLES


(YEAR
HONTK)

I
HCt.
. <
MCI

t
HO.
«L
(2,4,5-T)
0»B*IEI*
1989
3
5
0
0
10
0
0


OSCEOLA
1988
6
3
0
0
6
0
0


PAGE
1988
9
4
0
0
8
0
0


PALO ALIO
1989
1
5
0
0
10
0
0


HthguIh
1988
6
11
9
0
0
18
0
0


POCAHOXTAS
1989
1
4
0
0
8
0
0


POLK
1988
9
12
11
0
0
22
0
0



1989
1
1
0
0
2
0
0


POTTAWATTAMIE
1988
7
3
0
0
6
0
0



1989
1
24
0
0
48
0
0


POWESHIEK
1988
6
4
0
0
8
0
0


RIIWGOLD
1988
5
4
0
0
8
0
0


SAC
1988
6
1
0
0
2
0
0



1989
3
3
0
0
6
0
0


SCOTT
1989
6
10
0
0
20
0
0


SHELBY
1988
12
5
0
0
10
0
0


SIOUX
1988
7
10
0
0
20
0
0


STOW
1988
9
7
0
0
14
0
0


TAMA
1988
8
8
0
0
16
0
0


TAYLOR
1989
1
4
0
0
8
0
0

7-XA-19
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



V$U.
JESUIT?

RESULTS
*A!tCE Of
COHOEK-
THAUOWS
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL
JESUITS
SAKPLi
XEmTS , „
ftANGE OF
COUCCH-
TRAT1QKS
; 2^,5-TP (SltVEXV : ;v
OftEMEft
1984
7
2
0
0
2
0
0



1985
1
1
0
0
1
0
0



1986
6
2
0
0
2
0
0


- - vista: -
1985
5
2
0
0
2
0
0



1986
4,5
6.7
4
0
0
9
0
0


MSS
1984
6.8
2
D
0
2
0
0



1986
6
1
0
0
1
0
0



1986
6
1
0
0
1
0
0


cherokeE
1985
5
8
0
0
9
0
0



1986
4,5
6.7
3
0
0
8
0
. 0


CUT
1984
7
2
0
0
2
0
0



1985
3.5
3
0
0
4
0
0



1986
4
6.7
3
0
0
6
0
0


L-; cci*Tow:;-.
1984
8
1
0
0
1
0
0


r fiELAWARE
1984
9
4
0
0
4
0
0

7-IA-21
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WEll
RE«JIT$
SAflPL^ RESULTS


t
MCI
*
MCI
\ l
j MCI
4
MCI
~ (2,4,5-TP (SILVEX))
OELAWA WE
1985
3
1
0
0
1
0
0



1986
6
1
0
0
1
0
0


tKJBUQUE
1984
5
J
0
0
3
0
0



1986
6
1
0
0
1
0
0


IDA
1986
6,7
2
0
0
2
0
0


IOWA
1984
5
9
1
0
0
2
0
0



1986
6
1
0
0
1
0
0


KltC«U
1984
7
1
0
0
1
0
0



1986
6
1
0
0
1
0
0


«JSCATf*E
1984
7
10
2
0
0
3
0
0


O'BSIEN
1985
5
3
0
0
3
0
0



1986
4
6,7
1
0
0
5
0
0


PAGE •
1986
6
1
0
0
1
0
0


PALO AITO
1983
5
1
0
0
1
0
0



1984
5
1
0
0
1
0
0


SAC
1986
6
1
0
0
2
0
0


SHELBY
1984
6.8.9
4
0
0
4
0
0


SIOUX
1984
3
6,9
3
0
0
3
0
0



1985
2
2
0
0
2
0
0

7-IA-22
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



¦.VWu
RESULTS
	 ...SW.U...ttWTS	
RANGE OF
COfcCCK-
T*AT1C*S
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



Kll
SESULTS
SAWU
RESETS	
(WtfCE or I
pesticide
COUKT*
DATE
total
VELIS
SAMPLED
* 
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA






SAWL
*E$ATS
RANGE OF
CONCCM-
T8AT10»S
am/i)
: pesticide
COUNTY
OJ>T£

total
WELLS
* OF
POSITIVE
wens
TOtAl #
SAHPIES
WHBCR Of
POSITIVE
SAMPLES

¦

SAMfLEtl

'
(*e ar
W»TH>


I
WCi
.: <
MCI

t
«u
<
*CL
(2,4-Di
CALtAS
1985
10
2
0
0
2
0
0



1989
3
11
0
0
11
0
0


OA VIS
1988
5
4
0
0
4
0
0


&ECATUR
1988
5
5
0
0
5
0
a


DELAWARE
1988
9
1
0
0
1
0
0



1989
4
12
0
0
12
0
0


SES KOIKES
1988
8
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


DI C3C£«S£»
1988
8
6
0
0
6
0
0


DuauauE
1984
5
3
0
0
3
0
0



1986
6
1
0
0
1
0
0



1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


ewct
1988
8
1
0
0
1
0
0



1989
1
2
0
0
2
0
0


FAYETTE
1988
4
8
0
0
8
0
0


FtOYO
1988
e
r
0
0
7
0
0


FRAKKLIM
1989
1
6
0
0
4
0
0


F8EM0NT
1985
8
2
0
0
2
0
0



1986
8
4
0
0
4
0
0

7-IA-25
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



VEU RfSULT?
.. rSf»L
*esuit$ , ,
RAKCt OF
CQttCCK*
rBATlOK*
Cug/U
PESTICJOC
COUWIV
DATE
TOrAU
IELLS
SAMPtCO
# Of
POSITIVE
WEILS
TOTAL 9
SA*PUS
tRJMBEA Of
POSITIVE
SAMPLES


am
*CTtT»>

I
«a
<
KL

i
nu.
«
*a
(2,4-D)
fBEMONT
1987
a.9
3
0
0
3
0
0



1988
6
4
0
0
4
0
0


GREEKS
1988
6
10
7
0
0
7
0
0


mam
1988
to
5
0
0
5
0
0


GJW1E
1988
9
5
0
0
5
0
0


HAHIITO#
1988
7
5
0
0
5
0
0


; HAhCOCK
1988
5
6
0
0
6
0
0


; HARDIX
1989
3
6
0
0
6
0
0


HARRISON
1988
6
6
0
0
6
0
0


HflfRT
1988
8
5
0
0
5
0
0


: HOWARD
1989
1
6
0
0
6
0
0


: tiUKSOLOT
1988
6
4
0
0
4
0
0


: ida
1986
6.7
2
0
0
2
0
0



1988
4
4
0
1
4
0
1
0.150

IOWA
1984
S
9
1
0
0
2
0
0



1986
6
1
0
0
2
0
0



1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


j JACKSON
1988
5
7
0
0
7
0
0


: JASPER
1988
7
12
15
0
0
15
0
0

7-IA-26
-------
t	«
PESTICIDE SAMPLING IN THE STATE OF IOWA


mi
RESULT'S
SAKPL
SESyiTS ,
RANCE OF
cautfM-
rRAtiart
-------
PESTICIDE SAMPLING IN THE STATE OP IOWA



,., mi
KSUtff.. , , ,
S««?.LE JESUITS
RAKCf Of
COUCEK-
TfiATtott
CU9/U
P6STIC10E
COUNTY
PATE
TOTAL
WELIS
SAMPLED
* OF
POSITIVE
uau
TOJAl •
SAMPLES
SUNBER OF
POSITIVE
SAMPLES



KJTCBELl
1989
1
7
0
0
7
0
0


~MKOMA
1988
10
5
0
0
5
0
0


MOMKCE
1988
7
3
0
0
3
0
0


MOHTCOWRT
1988
9
3
0
0
3
0
0


MUSCATINE
1988
4,5
10
0
0
10
0
0


O'BRIEN
1985
5
3
0
0
3
0
0



1986
4
6.7
1
0
0
5
0
0



1989
3
5
0
0
5
0
0


OSCfOlA
1988
6
3
0
0
3
0
0


PAGE
1986
8
1
0
0
1
0
0



1987
3
1
0
0
1
0
0



1988
9
4
0
0
4
0
0


PALO ALTO
1989
1
5
0
0
5
0
0


PLYMOUTH
1988
6
11
9
0
0
9
0
0


POCAHOK1AS
1989
1
4
0
0
4
0
0


POL*
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0


-POTTAWATTAMIE
1985
8
2
0
0
2
0
0



1986
6
12
3
0
0
3
0
0

7-IA-28
-------
PESTICIDE SAMPLING IK THE STATE OF IQUA



mi reshjs
SAKPl
REStflJJf
WW5E Of
CONCEK-
T««l 0«
(VSM)
P£STtCiCf
COUNTY
PATE
total
WELLS
SAKPttf) ;
* OF
POSITIVE
wells
TOIAl f
SAMPLES
K0M8£ft OF
POSITIVE
SAKPUS


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



	vgu.jisbjs .. .
	is...
JIANGE OF
CONCCtf¦
rsAnott
PESTSCJOf
COJITT'*
DATE
TOTAL
VELIS
SAHP3.ED
* Of
posmvE
UEtLS
TOfAl #
SAMPLES
NUH8SR OF
POSITIVE
SAMPUS


tYEAR
HWK)

t
«C1
<
*C1

i
HO.
<
XCL
(2,4-D)
W1HNEBACO
1988
5
5
0
0
5
0
0


WINNESHIEK
1984
3
1
0
0
1
0
0



1985
1
6
2
0
0
3
0
0



1988
8
9
0
0
9
0
0


WOOOBUOY
19B5
5
9
0
0
9
0
0



1986
4
6
4
0
0
4
0
0



1988
4
9
0
0
9
0
0


WOfiTH
19B8
8
3
0
0
3
0
0


WIGHT
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WILLS OR SAMPLES . . ,


739
0
4
776
0
4
0.150-0.260
V 2,6-DIEWLAfcSUNE
CLAYTON
1983
3,5
r
10
16
0
0
17
0
0



1984
5
6
6
0
0
6
0
0

TOTAL DISCRETE
WELLS OP SAMPLES


8
0
0
23
0
0

'*¦" 2^J3ltTH*L*M.iL!M£
ADAMS
1988
12
4
0
0
4
0
0


BEHTOH
1989.
4
8
0
0
8
0
0


Black hawk
1989
1.2
13
0
0
13
0
0


SUCKAXAJi
1989
2.5
11
0
0
11
0
0


CARROLL
1989
3
7
0
0
7
0
0


CEOAR
1989
4
7
0
0
7
0
0

7-IA-30
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



VtU. RESULTS . . .
. SAW-LB *£$IATS
RAKCE Of
CGNCEH-
rfcAHONS
PESTICIDE
COUNTY
PATE
TOTAL
WELIS
SAMPLED
# OF
POSITIVE
WEILS
TOfAl #
SAMPLES
WMBEA Of
POSITIVE
SAMPLES


{YEAR
W»TH>

I
*
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL
fswr,:*

xemTS
ftAKGE Of . . . .
CONCCH-
TRATIOttS
(ug/t)
PESTIC5CE
COUNTY
DATE
TOTAL
WELLS
SAMPLED
* OF
POSITIVE
WEILS
TOTAL #
SAMPLES
WWBER or
POSITIVE
SAMPLES


«TEAR
**TH>

I
Ma
¦¦¦¦¦¦« ¦¦
*a

I
MCI
<
«et
~ C2,6_DIETHYLANIL1NE)
HAHASKA
1988
10
1
0
0
1
0
0



1989
4
6
0
0
6
0
0


MARION
1988
10
1
0
0
1
0
0



1989
4
11
0
0
11
0
0


MITCHELL
1989
1
7
0
0
7
0
0


O'BRIEN
1989
3
5
0
0
5
0
0


PALO ALTO
1989
1 -
5
0
0
5
0
0


PLYMOUTH
1988
11
8
0
0
8
0
0


POCAHONTAS
1989
1
4
0
0
4
0
0


i POLK
1988
12
10
0
0
10
0
0
-


1989
1
1
0
0
1
0
0


POTTAWATTAMIE
1989
1
24
0
0
24
0
0


SAC
19B9
3
3
0
0
3
0
0


SCOTT
1989
6
10
0
0
10
0
0


SHELBY
1988
12
6
0
0
6
0
0


TAYLOR' ¦;
1989
1
4
0
0
4
0
0


UNION
1989
1
3
0
0
3
0
0


WAPELLO
1988
10.11
9
0
0
9
0
0


.WAYNE
1988
11
2
0
0
2
0
0


WRIGHT
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WELLS OR SAMPLES


29?
0
0
297
0
0

7-IA-32
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



VEIL RESULT*
SAMPLE JSflSyiTJ
SAUCE OF
(XXCtH-
TRATTOKS
iw/l}
PgSriCiOE
COUNTY
Date
TOTAL
WELLS
SAMPLED
K 0*
TOSmVE
wais
TOTAL M | KUKtt* OF
SAMPLES I POSITIVE
J SAMPLES


(YEAS
MONTH)

t
MCI
<
MCL
3 t
j MCL
<
m
~ 3-HWRCXYCASBafURAH
CUYTO#
1981
10.11.12
1
0
0
3
0
0



1982
2,3,5
6
-1
a
1
5
0
3
0.050-0,150


1983
J,5
7
10
16
0
0
17
0
0



1984
5
6
6
0
0
6
0
0


FLOYD
1983
2,4,5
T,B
10.12
39
0
1
40
0
1
0.100

MITCHELL
1983
2,4,5
7,8,9
10.12
43
0
6
45
0
6
3.300-16.600
TOTAL DISCRETE
WELLS OR SAMPLES


28
0
3
116
0
10
0.050-16.600
*¦ 3KET0CAR80FIKM
CLAYTOK
1983
3,5
7
10
15
0
0
16
0
0



1984
5
6
6
0
0
6
0
0


FIO*0
1983
2,4,5
7,8
10.12
39
0
0
40
0
0


MITCHELL
1983
2,4,5
7,8,9
10,12
43
0
0
45
0
0

TOTAL DISCRETE
WEILS OR SAMPLES	


27
0
0
107
0
0

-SJiYOROX? CARBOFUftAN
ADAIR
1988
6
6
0
0
6
0
0


i ADAMS
1988
12
4
0
0
4
0
0



1988
8
10
0
0
10
0
0

7-IA-33
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



HELL RESULTS
	

HAttCE OF
CONCCK-
TRATtOtiS
(us/i;
PESTICIDE
CtUMTY
PATE
TOTAL
WELLS
SAMPLED
* OF
POSITIVE
URLS
TOTAL #
SAMPLES
W*B£R Of
POSITIVE
SAteits


{YEAR
WONTK)

t
net
<
HCL

fc
net
*
*cl
~ (3_HYOROXY CARBOFURA]
APPAWOOSE
1988
9
5
0
0
5
0
0


Auouem
1988
6
3
0
0
3
0
0


6ENTOM
1989
4
8
0
0
8
0
0


&LACK HAWK
1989
1,2
13
0
1
13
0
1
0.980

SOOiE
1988
5
5
0
0
5
0
0


&8EMER
1988
8
9
0
0
9
0
0


BUCHANAN
1989
2.5
11
0
0
11
0
0


BUIHA VISTA
1988
6
7
0
0
7
0
0


BUTIE*
1988
5
7
0
0
7
0
0


CALHOUN '
1988
6
4
0
0
4
0
0


CARROLL
19B9
3
7
0
0
7
0
0


CASS
1988
7
5
D
0
5
0
0


CEOAR
1989
4
7
0
0
7
0
0


CERRD GORDO
1988
8
7
0
0
7
0
0


CHEROKEE
1989
3
4
0
0
4
0
0


CHICKASAW
1988
4
6
0
0
6
0
0


CLARICE
1988
5
4
0
0
4
0
0


CLAY
1988
8
6
0
0
6
0
0


CtAVTOtl
1988
a
10
0
0
10
0
0


CLINTON
1988
« I
8
0
0
8
0
0

7-IA-34
-------
PESTICIDE SAMPLING IN THE STATE OF [QUA



WEU
RimT«
: «imn
RAKGE Of
' COHOSH*
¦mma**
Wl)
PESTtcjee
COUNT*
PATE
TOTAL
WELLS
SAMPLED
0 Of
POSITIVE
UELLS
TOTAL #
SAMPLES
HUMWft Of
POSITIVE
SAMPLES


tTEAR
MONTH)

I
net
<
«Cl

t
xa
<
*CL

~ (3_NY0ROXY CARBOFURA
CaAtffOBC
1988
10
6
0
0
6
0
0


OALtAS
1988
10
2
0
0
2
0
0



1989
3
11
0
0
11
0
0


fiAVJS
1988
5
4
0
0
4
0
0


DECATUR.
1986
5
5
0
0
5
0
0


OELAUARE
1988
9
1
0
0
1
0
0



1989
4
12
0
0
12
0
0


DES MOINES
1988
8
1
0
0
1
0
0



1989
5
6
0
0
6
0
0



1988
8
6
0
0
6
0
0


CU6UOUE
1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


EN«T
1988
8
1
0
0
1
0
0



1989
1
2
0
0
, 2
0
0



1988
8
0
0
8
0
0


HCW
1988
7
0
0
7
0
0


FRAHiatH
1989
4
0
0
4
0
0


FREMONT
1988
4
0
0
4
0
0


GSEENE
1988
10
7
0
1
7
0
1
0.130

cau*p*
1988
10
5
0
0
5
0
0

7-IA-35
-------
PESTICIDE SAMPLING IN THE STATE OF (CMA



V^Ll
RESULTS
sai^le ttsytis..
RANGE OF
COUCfM-
mrjotrs
(tig/U
FEsnaoE
COJHT*
DATE
TOTAL
VEILS
iJlKPtEO
* Of
posmvt
WEIU
TOTAl 9
SA*PtE$
pUM£fl OF
POSITIVE
SAMPLES


{YEAR
MONTK}

I
nu
<
hcl

t
wx
<
K£l

~ (3_HYDR0XY CARBOFURA3
GUTHRIE
1988
9
5
0
0
5
0
0


HAMILTON
1988
7
5
0
0
5
0
0


HANCOCK
1988
S
6
0
0
6
0
0


HARDIN
1989
3
6
0
0
d
0
0


HARRISON
1988
6
6
0
0
6
0
0


H5«R>r
1988
8
5
0
0
5
0
0


HOWARD
1989
1
6
0
0
6
0
0


HUMSOtOT
19B8
6
4
0
0
4
0
0


IDA
1988
4
4
0
0
4
0
0


IOWA
1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JAOtSOK
1988
5
7
0
0
7
0
0


JASPER
1988
7
12
15
0
0
15
0
0


JEFFERSON
1989
6
4
0
0
4
0
0


JOHNSON
1988
9
11
11
0
0
11
0
0


JCBES
1988
9
7
0
0
7
0
0


keckux
1988
7
4
0
0
4
0
0


ICCSSUTH
1988
7
10
10
0
0
10
0
0


IEE
1988
10.11
12
0
0
12
0
.
0

7-IA-36
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



1
	VELA. «BULI$	
		ewe'.LE *E5WJS
WMCe OF
CONCEN-
TRATIONS
i us/U
PEsneiae
COUKTY
OAT 6.
Total
WELLS
SAMPLED
* Of
PO$IMVfi
WELLS
TOTAL *
SAMPLES
JWMteR Of
WJSiTIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



VEU
RE«h.T«
	SU£LE KESB.T3	
RANGE OF
CONttH-
TRATIOMS
(ug/U
fesrioue
COUKtY
OAtt
total
VEILS
4 AH PI CD
POSITIVE
TOTAL 9
SAMPLES
IWWMR OP-
POSITIVE
SAWLEE


tTEAS
HOttTH)

I
MCI
<
*£L

I
#Cl
ttCL
~ (3JUDR0XT CARBOFURA1
PALO ALTO
1989
1
5
0
0
5
0
0


W.YKOJT#
19S8
6
11
9
0
0
9
0
0


POCAHONTAS
1989
1
4
Q
0
4
0
0


POU
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0


' POT T AM AT T Alii 1: ;•
1988
7
3
0
0
3
0
0


' ¦ ¦ • . : :. .
1989
1
24
0
0
24
0
0


POWtsaie*
1988
6
4
0
0
4
0
0


: W BCQOt D
1988
5
4
0
0
4
0
0


SAC
1988
6
1
0
0
1
0
0



1989
3
3
0
0
3
0
0


SCOTT
1989
6
10
0
0
10
0
0


SHELBY
1988
12
6
0
0
6
0
0


SIOUX
1988
7
10
0
0
10
0
0


STORY
1988
9
7
0
0
7
0
0


TAMA
1988
8
9
0
0
9
0
0


TAYLOR
1989
1
4
0
0
4
0
0


UNION
1989
1
3
0
0
3
0
0


'..VAN'. BUREH
1988
5
4
0
0
4
0
0


WAPELLO
1988
10.11
9
0
0
9
0
0

7-IA-38
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA

1
i
WELL
JESUITS
SAMPL
E *E3UUS
RANGE OF
COUCEK-
mno«$
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA


I
NCI
«
MCL

I
<
HCL
~ (3JCETO CARBOFURAN)
8UENA VISTA
1988
6
7
0
0
7
0
0


SUTLER
1988
5
7
0
0
7
0
0


CALHOUN
1988
6
4
0
0
4
0
0


CARSOLL
1989
3
7
0
0
7
0
0


CASS
1988
7
5
0
0
5
0
0


CEDAR
1989
4
7
0
0
7
0
0


CCRftO GORDO
1988
8
7
0
0
7
0
0


CHEROKEE
1989
3
4
0
0
4
0
0


CH tCKASAW
1988
4
6
0
0
6
0
0


CLA8KE
1988
5
4
0
0
4
0
0


cat
1988
8
6
0
0
6
0
0


CLAYTO#
1988
8
10
0
0
10
0
0


CllVTOH
1988
12
8
0
0
8
0
0


mufoRo
1988
10
6
0
t
6
0
1
0.027

OALIAS
1988
10
2
0
0
2
0
0



1989
3
11
0
0
11
0
0


OA VIS
1988
5
4
0
0
4
0
0


OECATUR
1988
S
5
0
1
S
0
1
0.028

OElAJARE
1988
9
1
0
0
1
0
0



1989
4
12
0
0
12
0
0

7-IA-40
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



, , , WE"-
ES^TS
SAtfPL
RESULTS
RANGE OF
CONCEN-
TRATIONS
CUB/O
pesncjoc
COUNTY
PATE
TOTAL
WELLS
SANPLEO
* Of
«*»T1V*
WEILS
TOTAL #
SAMPLES
ttOM0£« Of
POSITIVE
samples
¦

(YEAR
«WTH)

I
HCL

t
NCI
<
MCL
~ (3JCETO CARBOfllRAN)
OES MOINES
1988
a
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


&ICK1MSOM
1988
8
6
0
0
6
0
0


ousuaue
1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


EWKT
1988
8
1
0
0
1
0
0



1989
1
2
0
0
2
0
0


FAYETTE
1988
4
8
0
0
8
0
0


Ficrrs
1988
8
7
0
0
7
0
0


FRANKLIN
1989
1
4
0
0
4
0
0


PREHONT
1988
6
4
0
0
4
0
0


GREENE
1988
6
10
7
0
0
7
0
0


GRUNDY
1988
10
5
0
0
5
0
0


OJTHR1E
1988
9
5
0
0
' 5
0
0


HAMILTON
1988
7
5
0
0
5
0
0


HANCOCK
1988
5
6
0
0
6
0
0


HARDIN
1989
3
6
0
0
6
0
0


HARRISOK
1988
6
6
0
0
6
0
0


HENRY
1988
8
5
0
0
5
0
0


HOWARD ;
1989
1
6
0
0
6
0
0

7-IA-41
-------
PESTICIDE SAMPLING IN THE STATE OF tOUA



UEH RESULTS
, SW>1,
stsuus
RANGE OF
CONCEH-
TilAtlCMfS


I
mx
*
WCL

t
KCl
<
«a
* <5_K£TO CARBOFURAM)
KUK80UJT
1988
6
4
0
0
4
0
0


IDA
1988
;
4
0
0
4
0
0


IOWA
1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JACKSOS
1988
5
7
0
0
7
0
0


JASPER
1988
7
12
15
0
0
15
0
0


JEFFERSOH
1989
6
4
0
0
4
0
0


JOHNSO#
1988
9
11
11
0
0
11
0
0


j ones
1988
9
7
0
0
7
0
0


KEOKSX
1988
7
4
0
0
4
0
0


rassur*
1988
7
10
10
0
0
10
0
0


L£E
1988
10.11
12
0
0
12
0
0


L!««
1988
6
13
0
0
13
0
0


LOUISA
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
0
3
0
0


iron
1988
6.8
5
0
0
5
0
0


HADiSOH
1988
9
1
0
1
1
0
1
0.030


1989
1
7
0
0
7
a
0


MAHASKA
1988
10
1
0
0
1
0
0

7-IA-42
-------
PESTICIDE SAMPLING IN THE STATE OF I (MA



!
i
£
IM
«j
*
SAKPl
I^SUUS ,
MIKE or
CONCErt-
NJATIOWS
-------
PESTICIDE SAMPLING IN THE STATE OF IQUA



	 «U
8ESULTS
SAKPL
JlESWTS
RANGE OF
CONCEN-
TRATIONS
(ua/U
PEST I cine
COLWTT
DAt£
TOTAL
WELLS
SAHPlED
# OF
posmvr
WELLS
TOTAL t
SAMPLES
MUMB£R Of
POSITIVE
SA#Pt.£V


(TEAR
»WiTK>

t
HCl
HCl

I
HCl
XCL
»- (3_KETO CARBOFURAN)
POTTAWATTAMIE
1989
1
24
0
0
24
0
0


POWESHIEK
1988
6
4
0
0
4
0
0


«l*GGOLD
1988
5
4
0
0
4
0
0


SAC
1988
6
1
0
0
1
0
0



1989
3
3
0
0
3
a
0


SCOTT
1989
6
10
0
0
10
0
0


S#ELBV
1988
12
6
0
0
6
0
0


SIOUX
1988
7
10
0
0
10
0
0


stoby
1988
9
7
0
0
7
0
0
•

./ T^Vv\;:;
1988
8
9
0
0
9
0
0


T ATI OX
1989
1
4
0
0
4
0
0


imiOK
1989
1
3
0
0
3
0
0


VAN BUREK
1988
5
4
0
0
4
0
0


WAPEli.0
1988
10.11
9
0
0
9
0
0


WARREN
1988
9
17
0
0
17
0
0


WASHINGTON 7
1988
7
8
0
0
8
0
0


WAYNE
1988
9
11
3
0
0
3
0
0


WEBSTER
1988
5
8
0
0
8
0
0


V1KUEBAG0
1988
5
5
0
0
5
0
a


: ; WINNESHIEK
1988
8
9
0
0
9
0
0

7-IA-44
-------
PESTICIDE SAMPLING IN THE STATE OF IQUA



WELL
Results
SA#PU
RESULTS
RANGE. OF
CON CEN-
TS A U CMS
(U9/U
PESTICIDE
COUNTY
DAT£
TOTAL
WELLS
SAMPLED
* OF
POSITIVE
WELLS
toial #
SAMPLES
KUMKft OF
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IQUA



W£U RESULTS
SAMPf.
RESULTS
RANGE OF
CON CEN-
TS At lore
> 1 »' i....... 1. 1
PESTICIDE
COUNTY
DATE
TOTAU
UELl$
1AMP3.ED
• OF
POSITIVE
WEILS
TOIAt »
SAMPLES
*U*8£R Of
POSITIVE
SAMPLE


tVfiAR
ttONTH}

I
HCL
<
HCL

S
act
•<
WCL
~ (ACIHUORFEN)
CERKO GORDO
1988
8
7
0
0
7
0
0


CHEROKEE
1989
3
4
0
D
4
0
0


CHICKASAW
1988
4
6
0
0
6
0
0


CLARKE
1988
5
4
0
0
4
0
0


a**
1988
B
6
0
0
6
0
0


CtATTO#
1988
8
10
0
0
10
0
0


cluto#
1988
12
8
0
0
8
0
0


CRAWFORD
1988
10
6
0
0
6
0
0


BAIUS, •
1988
10
2
0
0
2
0
0



1989
3
11
0
0
11
0
0


CAVJS
1988
5
4
0
0
4
0
0


DECATUR
1988
5
5
0
0
5
0
0


DELAWARE
1988
9
1
0
0
1
0
0



1989
4
12
0
0
12
0
0


0£S KOINES
1988
8
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


©ictatisot*
1988
8
6
0
0
6
0
0


OUBUOUE
1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


EMKET
1988
8
1
0
0
1
0
0

7-IA-46
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA


:
WELL RESULTS
SAffPf.
RESULTS
RANGE OF
CCMCtM-
TRAMOM
<«0/O
; PfSTJCW
COUHTY
WT£
TOTAL
WELLS
SAMPLED
# OF
posmve
WEILS
70TM *
SAMPLES
NUM8£fi Of
POSITIVE
SAMPLE*


r,
1968
10
5
0
0
5
0
0


GUTHRIE.
1988
9
5
0
0
5
0
0


HAMILTON
1988
7
5
0
0
5
0
0


° 'HANCOCK
1988
5
6
0
0
6
0
0


HARDIN
1989
3
6
0
0
6
0
0


HARRISON
1988
6
6
0
0
6
0
0


HCMRY
1988
8
5
0
0
5
0
0


HOWARD
1989
1
6
0
0
6
0
0


XUMBOLOT
1988
6
4
0
0
4
0
0


IDA
1988
4
4
0
0
4
0
0


IOWA
1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JAUCSCM
1988
5
7
0
0
7
0
0


JASPER
1988
7
12
15
0
0
15
0
0

7-IA-47
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL RESULTS
, SWBH,
e; Hemrs ,,,
: COMCEtf-
TSATJOttS
[US/O
PESTJCICE
COUWTT
WTE
TOTAL
virus
SAMPLED
# OF
POSITIVE
WELLS
TOTM #
SAMPLES
KM8&I 6f
POSITIVE
SAMPLES


{YEAR
SOUTH)

I
MCI
<
*CL

I
MCI
<
HCt

~ (ACIFLUORFEM)
jsmssou
1989
6
4
0
0
4
0
0


JCHMSON
1988
9
11
11
0
0
11
0
0


JOK-S
1988
9
7
0
0
7
0
0


KEOKUK
1988
7
4
0
0
4
0
0


KOSSUTH
1988
7
10
9
0
0
9
0
0


lee
1988
10.11
12
0
0
n
0
0


tlNM
1988
6
13
0
0
13
0
0


LOUISA
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
0
3
0
0


LTOK
1988
6.8
5
0
0
5
0
0


SADISM
1988
9
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


MAMASUA
1988
10
1
0
0
1
0
0



1989
4
6
0
0
6
0
0


MA (HON
1988
10
1
0
0
1
0
0



1989
4
11
0
0
11
0
0


MARSHALL
1988
7
6
0
0
6
0
0


MILLS
1988
5
6
4
0
0
4
0
0


MITCHELL
1989
1
?
0
0
7
0
0

7-IA-48
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



mi
*ESUtT$
SAMPL
£ RESULTS.
RANGE OF
CONCEN-
TRATIONS
pesticide
COUNT*
PATE
total
VILLI
SAMPLED
M OF.
POSITIVE
UEiLS
TOTAL #
SAMPLES
MUMMR OF
POSITIVE
SAMPLES

'
CTEAR
MOHTtO

2:
MCI
<
MEL

i I «
net { MCi
~ (AC1FLUORFEN)
MONONA
1988
10
5
0
0
5
0
0


MOMROE
1988
7
3
0
0
3
0
0



1988
9
3
0
0
3
0
0


MUSCATIWE
1988
4.5
10
0
0
10
0
0


O'Wie*
1989
3
5
0
0
5
a
0


OSCEOLA
1988
6 "
3
0
0
3
0
0


fAGE
1988
9
4
0
0
4
0
a


PALO ALTO
1989
1
5
0
0
5
0
0


PLYMOUTH
1988
6
11
9
0
0
9
0
0


POCAHONTAS
1989
1
4
0
0
4
0
0


;POLK-::f /v-
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0


POTTAWATTAMIE
1988
7
3
0
0
3
0
0



1989
1
24
0
0
24
0
0


POWESHIEK
1988
6
4
0
0
4
0
0


RINGGOLD
1988
5
4
0
0
4
0
0


- SAC
1988
6
1
0
0
1
0
0



1989
3
3
0
0
3
0
0


$€011
1989
&
10
0
0
10
0
0


S*tEtBY
1988
12
5
0
0
5
0
0

7-IA-49
-------
PESTICIDE SAMPLING IK THE STATE OF IOWA



VELi.
RE«4T$
.... $*.*>L
SESAJS
RANGE OF
eoNcctf-
TKAtlOKS
pest!erne
COLIKTY
DATt
TOTAL
mis
SAMPLED
* Of
POSITIVE
WEILS
tOTAi #
SAMPLES
MUM6£ft
POSITIVE
$AMPL£S


-------
PESTICIDE SAMPLING IH THE STATE Of I QUA



WEIL
RESULTS
SAKPL
RESULTS
RANGE OF
CONCCK-
TRATlttrS
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



VEU

SAWL
RESULTS
RANGE OF
COHCCM-
TSATIOTS


t,
*Ci:


I
na
<
. *a
(ALACMLOR)
CASS
1988
7
5
0
0
5
0
0


CH3AR
1986
6
1
0
1
1
0
i
0,650


1989
4
7
0
0
7
0
0


C€R*0 GORDO
1988
8
7
0
0
7
a
0


W«*EE
1985
5
10
10
0
1
13
0
1
0.180


1986
4,5
6.7.8
12
0
1
14
0
1
0.100


1989
3
4
0
1
4
0
1
0.050

CHICKASAW
1988
4
6
0
0
6
0
0


.CtARKE .
1988
5
4
0
0
4
0
0


cur
1984
7
10
6
0
1
6
0
1
0.190


1985
3,5
10
4
0
0
4
0
0



1986
4,5
6.7.8
15
0
2
17
0
2
0.110-0.120


1988
8
6
0
0
6
0
0


ClA*TO«
1988
8
10
0
0
10
0
0


CUNTOK
1984
8
1
0
0
1
0
0



1988
12
8
0
D
8
0
a


CRAWFORD
1988
10
6
0
0
6
0
0


BALUS
1988
10
2
0
0
2
0
0



1989
3
11
0
0
11
0
0

7-IA-52
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



«EU
REA8.TS
SAtfPL
WSW.T5 ,
MNCE OF
CONCttf-
r«fa ic*s
(U9/U
p&sncio?
ecorr*
OATfc
10TAL
VEILS
SAXPlED
M of
POSITIVE
wats
TOTAt 9
SAMPLES
NUMBER of
POSITIVE
SAMPLES
•

-------
PESTICIDE SAMPLING IN THE STATE OF IOMA



«EU
W-WUS .
... ..S^ULMSMS	
RAHCE OF
COUCftf-
rwnoirt
Cuba;
pesncjfig
COUK7Y
CAT£
tOTAL
WELLS
SAMPltf)
* 0*
«»ITI«
WELLS
TOiM. #
SAMPLES
HUHBtt Of
POSITIVE
SAWLES


(YEAR
HONTK)

I I <
act J *KL

I
HOL
<
*Cl
(ALACHLOR)
F8EMQKT
1986
8
5
0
0
5
0
0



1987
3,5
6.7.8.9
15
0
0
15
0
0



1988
6
4
0
0
4
0
0


GREEHC
1988
6
10
7
0
0
7
0
0


GfaflfflY
1988
10
5
0
0
5
0
0


GUTHRIE
1988
9
5
0
0
5
0
0


HAKIUOK
1988
7
5
0
0
5
0
0


MAHCOCtC
1988
5
6
0
0
6
0
0


HARD!H
1989
3
6
0
0
6
0
0


HARRISON
1988
6
6
0
0
6
0
0


KHW
1988
8
5
0
0
5
0
0


HOWARD
1989
1
6
0
0
6
0
0


HUM8CSUU
1986
8
2
0
0
2
0
0



1988
6
4
0
0
4
0
0


IDA
1986
6.7.8
3
0
0
3
0
0



1988
4
4
0
0
4
0
0


vm
1984
4,5
6,7,8,9
n
29
0
0
47
0
0



1985
3,4,5
6,7,8
10.11
101
0
4
174
0
8
0.230-0.650
7-IA-54
-------
PESTICIDE SAMPLING IN THE STATE OF IQUA



WEU RESULTS
	SAHPk
RESETS	
RANGE Of
CONCEN-
TRATIONS
fug A)
PESTtClOE
COUNT'*
DATE
TOTAL
VEILS
SAMPLED
# 0*
POSITIVE
•; NR.LS
TOT At *
SAMPLES
NUMBER Of
POSITIVE
SAKPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELl
RESULTS
	MSMt.TS
RANGE OF
COMCEN-
TfcATlCKS
ltS


(TEAR
«OMTK>

I
NO.
*
HCL

fc
NCI
<
JfCL
(ALACHIOR)
MADJSOH
1989
1
7
0
0
7
0
0


HAHAfiKA
1988
10
1
0
0
1
0
0



1989
4
6
0
0
6
0
0


MARION
1988
10
1
0
0
1
0
0



1989
4
11
0
0
11
0
0


MARSHALL
1988
7
6
0
0
6
0
0


wits
1985
8
1
0
0
1
0
0



1986
6,8
5
0
0
5
0
0



1987
5
6.7.9
14
0
0
14
0
0



1988
5
6
4
0
0
4
0
0


MITCHELL
1984
7
1
0
0
1
0
0



1986
6
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


MOteOMA
1988
10
5
0
0
5
0
0


HONflOE
1988
7
3
0
0
3
0
0


KCWIGOHERV
1986
8
1
0
0
1
0
0



19B7
5
6.7
9
0
0
9
0
0



1988
9
3
0
0
3
0
0


«J$CA?t*E
1984
7
10
5
0
4
5
0
4
0.090-0.320
7-IA-56
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



	mt IfSSLIiL	
SAKPL
MSW.TS „ „
RANGE Of
COMOEN-
TR*no»r$
fua/U
PESTICIDE
COOtiTV '
OAK
iotal
WE LIS
SAHPlEO
# oe
POSITIVE
wet is
70JAL #
SAMPLES
MJHSfcft Of
POSITIVE
SAMPLES


a&Aft
*WTK)

t
Wtt
«c
KCl

I
HO.
<
XCL
(ALACHLOft)
WJSCATINe
1982
4.5
10
0
0
10
0
0


O'BRIEN
1985
5
3
0
0
4
0
0



1986
4
6.7
1
0
1
7
0
2
0.120-0.130


1989
3
5
0
0
5
0
0


OSCfOLA
1985
10
1
0
0
1
0
0



1986
5
6,7.8
12
0
0
12
0
0



1988
6
3
0
0
3
0
0


PAGS
1986
6.8
2
0
0
2
0
0



1987
3
1
0
0
1
0
0



1988
9
4
0
0
4
0
0


PALO ALTO
1983
5
1
1
0
1
1
0
11.000


1984
5
1
1
0
1
1
0
70.000


1986
5
6.7.8
16
0
2
16
0
2
0.990-1.100


1989
1
5
0
0
5
0
0


PLYMOUTH
1988
6
11
9
0
0
9
0
0


POCAHONTAS
1986
7
2
0
0
2
0
0



1989
1
4
0
0
4
0
0


POIIC
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0

7-IA-57
-------
PESTICIDE SAMPLING IN THE STATE OF 10UA



, NEH
results
SAWPL
RESULTS
RAItCE OF
CCKCEK-
TRATIOKS


8
NCI
<
ttCL

fc
act
KCl
(ALACHLOR)
POTTAWATTAMIE
1985
8
2
0
0
2
0
0



1986
6,7,8
12
8
0
0
9
0
0



1987
1,2,5
6.7
19
0
1
19
0
1
0.870


1988
7
3
0
0
3
0
0



1989
1
24
0
0
24
0
0


^OWEStflEK
1988
6
4
0
0
4
0
0


RiWGGtH.0
1988
5
4
0
1
4
0
1
0.068

sac
1986
6
2
0
0
2
0
0



1988
6
1'
0
0
1
0
0



1989
3
3
0
0
3
0
0


: SCOTT
1989
6
10
0
0
10
0
0


SHELBY
1984
6.8.9
5
0
0
5
0
0



1988
12
6
0
0
6
0
0


SIOUX
1984
S
6.9
3
0
0
3
0
0



1985
2
7
4
3
0
5
3
0
2.000-11.000


1986
7.8
2
0
0
2
0
0



1988
T
10
0
0
10
0
0


STORY
1988
9
7
0
0
7
0
0


TAMA
1984
4,5
6,7
3
0
0
5
0
0

7-IA-58
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



_ WELL SE&?LI.$.	
„ SA*H
RESULTS . ..
RANGE OF
COICCH-
ruAfiotrs
(tB/O
PESTJCiSE
COUKTY
DAT£
TOTAL
WE LU
«MPL£0
4 Of
tt»!TJVt
yeus
TOTAL f
SAMPLES
of .
POSITIVE
SA»LK


aw
WHtK)

t
NU
¦<
*Cl

t
HCi.
¦<
MCI
(ALACHLOR)
TAMA
1988
a
9
0
0
9
0
0
¦s

TAYLOR
1989
1
4
0
0
4
0
0


UMIOtt
1989
1
3
0
0
3
0
0


MM BUR£K
1988
5
4
0
0
4
0
0


HAPtLLO
1988
10.11
9
0
0
9
0
0


VURREN
1988
9
17
0
0
17
0
0


WASHINGTON
1988
7
8
0
1
8
0
1
0.050

WkTfHE
1988
9
11
3
0
0
3
0
0


: WEBSTER
1988
5
6
0
0
8
0
0


VI UN E0AGO
1988
5
5
0
0
5
0
0


: U!MUESHI EX
1984
8
1
0
0
1
0
0



1985
1
3
0
0
3
0
0



1986
6
2
0
0
2
0
0



1988
8
9
0
0
9
0
0


UOOOBUST
1985
5
10
10
0
0
10
0
0



1986
4
6.7.8
6
o
1
6
0
1
0.160


1988
4
9
0
0
9
0
0


WORTH
1988
8
3
0
0
3
0
0


VKfGKT
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WELLS Oft SAMPLES


886
6
21
1216
7
36
0.020-70.000
7-IA-59
-------
PESTICIDE SAMPLING IN THE STATE OF IQUA



WEU
RESULTS
SiWL
»i?S^.T3
MKGE Of
CONCEtf*
TRATIQM
cua/i)
Ptsnciae
COUKTY
DATE
total
WE LIS
SAMPLED
* OF
POSITIVE
WELLS
TOTAL 0
SAMPLES
«W0£R Of
POSITIVE
SAtPLES


(YEA*
MW?K>

t
NCI
. <
mi

%
. MCt
<
HCL
> ALWtM
8REME8
!
1984
r
2
0
0
2
0
0



1985
1
1
0
0
1
0
0



1986
6
2
0
0
2
0
0


8UEHA VISTA
198S
5
2
0
0
2
0
0



1986
4,5
6.7
4
0
0
8
0
0


CASS
1984
6,8
12
3
0
0
3
0
0



1986
6
1
0
0
1
a
0


Cg&ftK
1986
6
1
0
0
1
0
0


CHEROKEE
1985
5
8
0
0
8
0
0



1986
4.5
6.7
3
0
0
?
0
0


CtAT
1984
7
2
0
0
2
0
0



1985
3.5
3
0
0
3
0
0



1986
4
6.7
3
0
0
6
0
0


ctwio*
1984
8
1
0
0
1
0
0


DELAWARE
1984
9
4
0
0
4
0
0



1985
3
1
0
0
1
0
0



1986
6
1
0
0
1
0
0


OtJSLKJUE
1984
5
3
0
0
3
0
0



1986
6
1
0
0
- 1
0
0

7-IA-60
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL RESULTS
SAMPL
RESULTS
«AIHSE Of
CONOEK-
mno«5
<«B/U
; ptsnctot
CCUtfTY
DATE
TOTAL
WELLS
SAMPLED
« OF
POSITIVE
ucus
TOTAL #
SAMPLES
ttOHKft Of
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



	WU
RESULTS
SAfWL
SESUiTS
4AKCE OF
CONCEK-
muows
fl/U
*ESnc*0€
caw?*
DATE
YorAL
WELLS
SAMPLED
* Of
POSITIVE
UEUS
TOtAL #
SAMPLES
MUMBED OF
POSITIVE
SA#PL£&


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA





ITS	



veil
RESULTS
MM
RANGE OF


PfcSTICiM
MUHT*
DATE
10TAL
VEILS
SAMP1CO
* OF
POSITIVE
WELLS
TOTM # | JWMB« OF
SAMPLES | POSITIVE
] SAMPLES
CON CEN-
TRA I IONS
(ue/i;




-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELi
RESULTS
SAHPL
^SIATS
HANQE Of
COJiCEH-
TRAT10NS
a«/»
pesticide
COUNTY
PATE
total
WELLS
SAHP1E0
* OF
POSITIVE
WEILS
TOtAL »
SAMPLES
SUKBtR OF
POSITIVE
SAMPLES


8Q
5?
IK W

t
HCl
<
KCl

I
HCl
<
mi
(ATRA2INE)
CLAYTOK
1983
3,5
7
10
16
0
9
1?
0
10
0.100-0.950


1984
5
6
6
0
4
6
0
4
0.200-0.290


1988
8
10
0
1
10
0
1
0.480

¦CUNTO*
1984
8
1
0
1
1
0
1
1.700


1988
12
8
0
1
B
0
1
0.410

oftkUftm
1988
10
6
0
1
6
0
1
0.150

OALUS
1988
10
2
0
1
2
0
1
0.170


1989
3
11
0
2
11
0
2
0.140-0.260

DAVIS
1988
5
4
0
0
4
0
0


DECATUR
1988
5
5
0
0
5
0
0


DELAWARE
1984
9
4
0
4
4
0
4
0.100-0.410


1985
3
1
0
1
1
0
1
0.110


1986
6
2
0
1
2
0
1
0.140


1988
9
1
0
0
1
0
0



1989
4
12
0
0
12
0
0


OES H01KES
1988
8
1
0
0
1
0
0



1989
S
6
0
0
6
0
0


OSCKINSOK
1988
8
6
0
0
6
0
0


weuaoi
1984
5
3
0
3
'
0
3
0.100-0.140
7-IA-64
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



, ,WEU
RESULTS
S^MPl
RESULTS „
RANGE OF
eONCCN-
TRAT lews
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



wen
KSM.n
SAMPLE REStftTS
KAHGt Of
ffsncjoe
CCtflfTr
PAT£
total
WELLS
SAMPLED
§ Of
POSIT!VI
UEUS
TOTAl #
SAMPLES
SUM8£A Of
POSITIVE
$AMPL££
COtfCCK-
rmtum
-------
PESTICIDE SAMPLING IN THE STATE Of IOWA



weit result*

RESETS .
JUttCE OF
COHC£H'
TWT1WS
rue/u
\
f>eSTICH}£
CamTY
PATE
totai.
WEIU
SAMPLED
* Ot
«»mvE
WEILS
,	,
Tom «
SAMPIES
KUMttft OF
POSITIVE
SAMPLES


{TEAS
«#TR>

fc
HCi
MCI

fc
act
<
*u
(ATRA2INE)
KOSSUTH '
1988
7
10
10
0
0
10
0
0


L££
1988
10.11
12
0
0
12
0
0


u>m
i9aa
6
13
0
0
13
0
0


LOWS*
1988
4
6
0
1
6
0
1
0.450

UJCAS
1988
7
3
0
0
3
0
0


LTOW
1984
6
1
0
1
1
0
1
0.190


1985
7
5
0
1
5
0
1
0.240


1966
5
7.8
8
0
0
8
0
0



1988
6,8
5
1
1
5
i
1
0.280-3.410

WkDISON
1988
9
1
0
0
1
0
0



1989
1
T
0
0
7
0
0


HAXASIA
1988
10
1
0
0
1
0
0



1989
4
6
0
0
6
0
0


HAH10H
1988
10
1
0
0
1
0
0



1989
4
11
0
0
11
0
0


tfARSHAlt.
1988
7
6
0
0
6
0
0


mux
1985
8
1
0
0
1
0
0


	
1986
6.8
5
0
1
5
0
1
0.160


1987
5
6,7,9
14
0
0
14
0
0

7-IA-6?
-------
PESTICIDE SAMPLING IK THE STATE OF IOWA



wen
Results,, t t
SAWL

«A*CE OF
tt»C£K-
mnoKs
CL0/O
p£srtcioE
COUNTY
PATfc
TOTAL
VSUS
SAMPLED
#0*
POSITIVE
WEILS
TOW. #
SAMPLES
NUMBER Of
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



HELL RESULTS
SAMPL
JESUITS ,
«A«S£ Of
COHCEtf-
TSAHOtt
 Of
pmifm
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



, WELL
re$ULTS
, M*S>L
JESUITS
RANCE OF
COMCCK-
mngtts
(ua/i)
pesrinos
CCUHTY .
DATE
TOTAL
VEILS
SAMPLED
f or
POSITIVE
WEILS
TOTAl #
SAMPLES
IKW&fi Of
POSITIVE
SAMPLES


(tEAR
**TK)

I
act
¦«
mcl

I
Htt
<
MCL
(ATRAZINE)
RIKSGOtD
1988
5
4
0
0
4
0
0


SAC
1986
6
2
0
2
2
0
2
1.500-1.700


1938
6
1
0
0
1
0
0



1989
3
3
0
0
3
0
0


SCOTT
1989
6
10
0
0
10
0
0


SHELBY
1984
6.8.9
5
0
5
5
0
s
0.200-2.700


1988
12
6
0
1
6
0
1
0.420

SIOUX
1984
3
6.9
3
0
3
3
0
3
0.130-0.650


1985
2
7
4
3
0
5
4
0
3.900-13.000


1986
7. B
2
0
1
2
0
1
0.130


1988
7
10
0
1
10
0
1
0.440

src*r
1988
9
7
0
0
7
0
0


TAMA
1984
4,5
6.7
3
0
0
5
0
0



1988
8
9
0
0
9
0
0


TATiOft
1989
1
4
0
0
4
0
0


UN I0W
1989
1
3
0
0
3
0
0


VAN BUREK
1988
5
4
1
0
4
1
0
6.610

WAPELLO -
1988
10.11
9
1
1
9
1
1
0.660-4.800

UARftEN
1988
9
17
0
0
1?
0
0

7-IA-70
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



VELi,
RESULTS
SAMPL
RESULTS
HAWSE Of
cat cm-
mucus
pesTjeioe
COMVl
DATE
TOTAL
WE LIS
SAMPtED
* Of
POSITIVE
*Us
TOTAl »
SAMPLES
XVJMBEfi Of
POSITIVE
SAMPLES


{TEA*
**TK}

i
Wtt
<
HC!.

I
aa
<
HCL'
(ATRAZINE)
«AWING,TO«
1988
7
8
0
0
B
0
0


WAYNE
1988
9
11
3
0
0
3
a
0


UEUT£ft
1988
5
8
0
1
8
0
1
0.885

VSHHE8AGC
1988
5
5
0
0
5
0
0


WINNESHIEK
1984
8
1
0
1
1
0
1
1.700


1985
1
3
0
3
3
0
3
0.210-0.300


1986
6
2
0
2
2
0
2
0.360-0.590


1988
8
9
0
0
9
0
0


U00D60R.*' -
1985
5
10
10
0
0
10
0
0



1986
4
6,7.8
6
0
4
6
0
4
0.250-0.660


1988
4
9
0
0
9
0
0


WORTH
1988
8
3
0
0
3
0
0


WUCHt
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WELLS OR SAMPLES


925
12
128
1416
16
296
0.010-13.000
~ BHC
BREMER
1984
7
2
0
0
2
0
0



1985
1
1
0
0
1
0
0



1986
6
2
0
0
2
0
0


SUEMA VISTA
1985
5
2
0
0
2
0
0



1986
4,5
6,7
4
0
0
8
0
0

7-IA-71
-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



WELL
RESULTS
SAMPLE SESUUS
KANCE OF
PtSTfCiCe
CCDHtt
PATE
TOTAL
WEUS
SAMPtEO
# OF
POSITIVE
UELLS
»-
SAMPLES
MUMSEO OF
POSITIVE
SAMPLES
concek-
TKATIOKS


I
NCI
Ml

t
net
<
mi

~ (BHC 
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



W6LI,
KESUUS
, SAKPL
semT*,, , .,
RAKGE OF
CONCEH-
runotts
CUB/t)
PESTjeice
ccunn
DATfe
TOTAL
WE LI 5
sampled
« OF
POSITIVE
WEILS
TOTAl «
SAMPLES
NUMBER OF
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



WEU
RESULTS
SAMPL
RESULTS
«AM£ Of
PESTICIDE
COUNTY
DATE
TOTAL
WEILS
SAMPLED
« OF
POSITIVE
WEILS
I0TAI #
SAMPLES
WMBER Of
POSITIVE
SAKPICK :
CGNCEK*
TSAnOtt
««/o


-------
PESTICIDE SAMPLING IN THE STATE OF 10UA



„ .W-V,
IHra^Tf, „
. . SAKPLE RESULTS ..
M#G€ QF
cmctn-
rsmows
tug A)
P£STiti«
COJKTY
DATE
TOTAL
WELLS
SAHPtfD
* Of
POSITIVE
HELLS
TOTAL t
SAMPLES
NUMBER Of
POSITIVE
SAt&L££


(TEAR
UONTH)

t J <
act | xa

I
NCI
<
*CL
(BUTYLATE)
raiOCASAtt
1988
4
6
0
0
6
0
0


CLARKE
1988
5
4
0
0
4
0
0


cu*
1985
10
1
0
0
1
0
0



1986
4,5
6.7.8
10
a
a
12
0
0



1988
8
6
0
0
6
0
0


CLAYTON
1988
8
10
0
0
10
0
0


CUNTOK
1988
12
8
0
0
8
0
0


CRAWFORD
1988
10
6
0
0
6
0
0


MLtM
1988
10
2
0
0
2
0
0



1989
3
11
0
0
11
0
0


urns
1988
5
4
0
0
4
0
0


OeUTUR
1988
5
5
0
0
5
0
0


DELAWARE
1988
9
1
0
0
1
0
0



1989
4
12
0
0
12
0
0


DES KOIKES
1988
8
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


OiatNSOM
1988
8
6
0
0
6
0
0


OUBUOOf
1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


EHHET
1988
8
1
0
0
1
0
0

7-IA-75
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



UELl

. -• - _J
£
;V ;«§
sEmjs
#AIM£ Of	
COM OEM'
mriow
fesncioe
COUKTV
DATE
TOTAL
VEILS
SAMPLED
# Of
POSITIVE
WEILS
TOTAL #
SAMPLES
SUMBEft Of
rosmwr
samples


(YEAR
MONTH}

I
*a
<
KCL

I
MCi
¦ «¦'
xa

(BUTT LATE)
owet
1989
1
2
0
0
2
0
0


FAYKTTC
1988
4
8
0
0
8
0
0


FLOY&
1988
8
7
0
0
7
0
0


FBAMICUtf
1989
1
4
0
0
4
0
0


FKEMOK7
1986
8
1
0
0
1
0
0



1987
3,5
6.7.8.9
15
0
0
15
0
0



1988
6
4
0
0
4
0
0


GREEKE
1988
6
10
7
0
0
7
0
0


GftUHOT
1988
10
5
0
0
5
0
0


GUTHRIE
1988
9
5
0
0
5
0
0


HAMILTON
1988
7
5
0
0
5
0
0


HANCOCK
1988
5
6
0
0
6
0
0


KAR01W
1989
3
6
0
0
6
0
0


HARRISON
1988
6
6
0
0
6
0
0


HfXR*-
1988
8
5
0
0
5
0
0


KOWARD
1989
1
6
0
0
6
0
0


HUM&OIOT
1986
8
2
0
0
2
0
0



1988
6
4
0
0
4
0
0


IDA
1986
6.7.8
3
0
0
3
0
0



1988
4
4
0
0
4
0
0

7-IA-76
-------
PESTICIDE SAMPLING IN THE STATE OF 10UA



t£Ll
results

8E3UITS
MtKF, OF
CONCCU-
TS At tOWS
CueA)
RESTlCJoe
COUNT*
OAT€
TOTAL
MELLS
UMPUO
# Of
POSITIVE
wells
wjh y
SAMPLES
mJKBtft OF
POSITIVE
SAMPLES
:
-
am
HQHTH>

t
<
WCL

t
NCI
*CL
(BUTYLATE)
10UA
1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JAOCEOtf
19B6
5
7
0
0
7
0
0


JASffR
1988
7
12
15
0
0
15
0
0


JEfFERSOH
1989
6
4
0
0
4
0
0


JOMSOK
1986
9
11
11
a
0
11
a
0


JOKES
1988
9
7
0
0
7
0
0


; «C£QW*
1988
7
4
0
0
4
0
0


KOSSUTH
1988
7
10
10
0
0
10
0
0


IK
1988
10.11
12
0
0
12
0
0


urn
1988
6
13
0
0
13
0
0


l001SA
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
0
3
0
0


UC*
1985
7
5
0
0
5
0
0



1986
5
7.8
8
0
0
8
0
0



1988
6.8
5
0
0
5
0
0


jyoisw
1988
9
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


HAHASKA
1988
10
1
0
0
1
0
0

7-IA-77
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



	wen
JESUITS
	 5Al*>_lJ-RESULTS .....
HA IKE OF
CONCEK-
muwts
cug/o
PESTJCIM
ccutrrr
DAtt
TOTAL
«US
SAMPltt)
* Of
POSITIVE
UfUS
TOJAt #
SAMPLES
NUMBER Of
POSITIVE
SAMPLES


<*&*»
HOKTK)

I
HO.
<
*£L

» ¦
ACt
<
*Cl
(BUTYWTE)
MAHASKA
1989
4
6
0
0
6
0
0


MARION
1988
10
1
0
0
1
0
0



1989
U
11
0
0
11
0
0


MARSHALL
1988
7
6
0
0
6
0
0


#Il«
1986
8
1
0
0
1
0
0



1987
5
6.7.9
14
0
0
15
0
0



1988
5
6
4
0
0
4
0
0


KirCKEli
1989
1
7
0
0
7
0
0


NONOKA
1988
10
5
0
0
5
0
0


wxRoe
1988
7
3
0
0
3
0
0


HONTQOMERT
1986
8
1
0
0
1
0
0



1987
5
6.7
9
0
0
9
0
0



1988
9
3
0
0
3
0
0


MU5C/ITIUE
1988
4,5
10
0
0
10
0
0


G'WJE#
1986
4
6.7
1
0
0
5
0
0



1989
5
5
0
0
5
0
0


OSCEOLA
1985
10
1
0
Q
1
0
0



1986
5
6.7.8
12
0
0
12
0
0



1968
6
3
0
0
3
0
0

7-IA-78
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



«EU RESULT*
SMPLE SESUUS
RAWS Of
COMCtK-
TRAT10HS
fu»/U
5>esncit)€
COUKTY
PATE
total
VEILS
SAMPLED
# W
posmv*
WEILS
TOTAL #
SAMPLES
i
X'JH&ED Of
POSITIVE
$AKPL£E


(YEAS
*0#TK)

£
Htt
<
*CL

£
HC4.
-<
ft£L
(BUTYLATE)
MCE
1987
3
1
0
0
1
0
0



1988
9
4
0
0
4
0
0


PALO ALTO
1986
5
6.7.8
16
0
0
16
0
0



1989
1
5
0
0
5
0
0


PLYMOUTH
1988
6
11
9
0
0
9
0
0


POCAHONTAS
1986
7
2
D
0
2
0
0



1989
1
4
0
0
4
0
0


m.%
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0


POTTAiiATTAHiE
1986
8
12
2
0
0
2
0
0



1987
1,2,5
6.7
19
0
0
19
0
0



1988
7
3
0
0
3
0
0



1989
1
24
0
0
24
0
0


POWESHJEK
1988
6
4
0
0
4
0
0


R3W5&OLD
1988
5
4
0
0
4
0
0


SAC
1988
6
1
0
D
1
0
0



1989
3
3
0
D
3
0
0


SCOTT
1989
6
10
0
0
10
0
0


SHEIBT
1988
12
6
0
0
6
0
0

7-IA-79
-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



VELi 8E«B.rS
	fWJ *E!WUS	
RANGE or
CONCftt-
TRATIOKS
pesticide
cautfTr
PAU
Tor*t
WELLS
SA*Pi.fO
1
« Of
POSITIVE
WEILS
?0?M # | t&MB&R Of
SAWPtfS i POSJT1W
| SAM>L£?


(TEAR
HOKTK)

t
tKl
<
KCL
1 l
| MCI
<
*CL
(BurrtATE)
SIOlfK
1985
7
1
0
0
1
0
0



1986
7.8
2
0
0
2
0
0



1988
7
10
0
0
10
0
0


£TO*Y
1988
9
7
0
0
7
D
0


TAMA
1988
8
9
0
0
9
0
0


TAKtOft
1989
1
4
0
0
4
0
0


wim
1989
1
3
0
0
3
0
0


VAX BUSEK
1988
5
4
0
0
4
0
0


WAPELLO
1988
10,11
9
0
0
9
0
0


WARREN
1988
9
17
0
0
17
0
0


WASHINGTON
1988
7
8
0
0
8
0
0


UAWE
1988
9
11
3
0
a
3
0
0


WEBSTER
1988
5
8
0
0
8
0
0


WINNEBAGO
1988
5
5
0
0
5
0
0


WINNESHIEK
1988
8
9
0
0
9
0
0


WOODBURY
1985
10
1
0
0
1
0
0



1986
4
6.7.8
6
0
0
6
0
0



1988
4
9
0
0
9
0
0


WORTH
1988
8
3
0
0
3
0
0


W*IGK7
1989
J
5
0
0
5
0
0

TOTAL DISCRETE
WELLS OR SAMPLES


76Z
0
0
866
0
0

7-IA-80
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



mt
8ESULTS
SAHPL
RESULTS ,
«AKCE Of
COUCEN-
TRATIOKS
A«
1989
4
7
0
0
7
0
0


CERRO GORDO
1988
8
7
0
0
7
0
0


CHEROKEE
1985
10
2
0
0
2
0
0

7-IA-81
-------
PESTICIDE SAMPLING IN THE STATE Of JQUA



W£U
*rsw.T$ ,
.. _ HESWJS . .
RANGE Of
COUCEK-
nwmo»»v
fUB/t)
P£S7IC1(JE
«MiTY
PATE
TOTAL
WE LIS
SAMPLft
* Of
postnvr
weiis
T01AI #
SAMPLES
W*&£R OF
wsmvE
SAMPtfg
:

-------
PESTICIDE SAMPLING IN THE STATE OF I0UA



t*Ll
8FRJLTC
, , SAKPL
RESULTS
RAKCE OF
COKCEK-
TUAttOirt


fc
NCi
<
KCL

I
MR
«
KCL
(CARBQFURAN)
0UBU8UE
1989
6
11
0
0
11
0
0


€M«r
1988
8
1
0
0
1
0
0



1989
1
2
0
0
2
0
0


FAYCTTE
1988
4
8
0
0
8
0
0


FtO*D
1988
8
7
0
0
7
0
0


FBANKLIN
1989
1
4
0
0
4
0
0


FREMONT
1986
8
4
0
0
4
0
0



1987
8.9
3
0
0
3
0
0



1988
6
4
0
0
4
0
0


«EEMf
1988
6
10
7
0
0
7
0
0


WUHM
1988
10
5
0
0
5
0
0


OJT*RIE
1988
9
5
0
0
5
0
0


HAHRTQ#
1988
7
5
0
0
5
0
0


HANCOCK
1988
5
6
0
0
6
0
0


HARDtN
1989
3
6
0
0
6
0
0


HARRISON
1988
6
6
0
0
6
0
0


HENRY
1988
8
5
0
0
5
0
0


HOWARD
1989
1
6
0
0
6
0
0


mWSOLOT
1986
8
2
0
0
2
0
0



1988
6
4
0
0
4
0
0

7-IA-83
-------
PESTICIDE SAMPLING IN THE STATE OF JOUA




RESULTS
, , SAMPL
RESifvTS
RAUCE Of
CONKK-
rstAticws
CUB/O
PESTICIDE
cowry
£>AT€
10TAL
WEU.S
SAMPLED
M 0f
POSITIVE
urtLs
TOlAl #
SAMPLES
NUNBEf* OF
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE Of IOWA



«£U
RESULTS
SAHPl
REWITS
XfttfGE Of
CONCtlf-
rsanoits
PEsnci&e
COUNTY
PATE
iotal
VEUS
SAMPLED
* OF
POSITIVE
WEUS
TOIAL 9
SAMPLES
WJHBEft Of
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



VEli RESULTS'
;;T; $miz RESULTS
RAXCE Of
COM DEW'
TRAncmS


i
Ma
<
*a

t I «
MCI ] *CL
(CAKBOFUKAN)
MGE
1986
8
1
0
0
1
0
0



1987
3
1
0
0
1
0
0



1988
9
4
0
0
4
0
a


PALO ALTO
1986
5
6.7.8
16
0
0
16
0
0



1989
1
5
0
0
5
0
0


PLYMOUTH
1988
6
11
9
0
0
9
0
0


PQCAKGftTAS
1986
7
2
0
0
2
0
0



1989
1
4
0
0
4
0
0


POU
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0


POTTAWATTAMIE
1986
6
12
3
0
0
3
0
0



1987
1,2,5
6
4
0
0
4
0
0



1988
7
3
0
0
3
0
0



1989
1
24
0
0
24
0
0


POUESiflElf
1988
6
4
0
0
4
0
0


RINGGOLD
1988
5
4
0
0
4
0
0


SAC
1988
6
1
0
0
1
0
0



1989
3
3
0
0
3
0
0


SCOTT
1989
6
10
0
0
10
0
0

7-IA-86
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



		
SAMPlS rewits
HAKGE Of
CONttK-
mncws


I
Htt
<
w.

MCI
<
MCI
CCARBOFURAN)
sheuy
i9sa
12
6
0
0
6
0
0


SIOUX
1985
7
1
0
0
1
0
0



1986
7.8
2
0
0
2
0
0



1988
7
10
0
0
10
0
0


ttokf
1988
9
7
0
0
7
0
0


tAHA
1988
8
9
0
0
9
0
0


Taylor
1989
1
4
0
0
4
0
0


wich
1989
1
3
0
0
3
0
0


VAK BUR£M
1988
5
4
0
0
4
0
0


VAPEllO
1988
10,11
9
0
0
9
0
0


VARREX
1988
9
17
0
0
17
0
0


WASHINGTON
1988
7
8
0
0
8
0
0


WAVH6
1988
9
11
3
0
0
3
0
0


WEBSTER
1988
5
8
0
0
, 8
0
0


WIHHE8A60
1988
S
5
0
0
5
0
0


WIHUESHJEX
1988
8
9
0
0
9
0
0


WOODBUR*
1985
10
1
0
0
1
0
0



1986
4
6.7.8
6
0
0
6
0
0



1988
4
9
0
0
9
0
0


VOflTH
1988
8
3
0
0
3
0
0

7-IA-87
-------
PESTICIDE SAMPLING IN THE STATE Of IOWA



WEU.
BEfVLT?

E-RESULTS
MWE Of
CONftEK-
TRATtOtrS
 CARSON: TESTRACHi«iIOI
OU&U6UE
1984
5
1
0
0
1
0
0

TOTAL OISCRETE
WELLS OR SAMPLES	


1
0
0
1
0
0

CHCORAMBEK
AOAlft
1988
6
6
0
0
6
0
0


ADAMS
198a
12
4
0
0
4
0
0


AUAMAKEE
1988
8
10
0
0
10
0
0


APPANOOSE
1988
9
5
0
0
5
0
Q


AUOUBOM
1988
6
3
0
0
3
0
0


BEMTON
1989
4
8
0
0
8
0
0


BLACK tiAU*
1989
1.2
13
0
0
13
0
0


BOONE
1988
5
5
0
0
5
0
0


BREMER
1984
7
2
0
0
2
0
0



1985
1
1
0
0
1
0
0



1986
6
2
0
0
2
0
0



1988
8
9
0
0
9
0
0


BUCKAMM
1989
2.5
11
0
0
11
0
0


KJESA ViSTA
1985
5
2
0
0
2
0
0

7-IA-88
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



i
RESULTS , , .

RE5VITS
MHGl Of
*>ESTIC1J>S	
cowm
DATE
TOTAL
WE liS
SAMPlEb
* Of
rosmvE
wens
TOIAl #
SAMP1.ES
ttlW&ER OF
POSITIVE
SAtfPLES
CONCEK-
mnctts
(ug/O


-------
PESTICIDE SAMPLING IN THE STATE Of IOWA

1
\
WEU *ESW.T$
	SAHPlr
RESULTS
RANGE Of
COBC€K-
TSATtOK*
(ua/D

COUHtf
DATE
Tor*u
VEUS
«MPt€D
* W '
rosin vi
weus
TCTAt 0
SAMPLES
humber of
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF 10UA























' UELL

VSAKPL
. RESULTS
*AKC£ OF
PEST1CU*
COIKT*
0AT£
total
WEILS
SAMPLES
* OP
pbsnm
Mats
TOTAL 9
SAMPLES
MUHB£R <0f
POSITIVE
SAMPLES
COBOEK-
TMtlOKS
{U9/0


CTIAR
wtmu
I I
| Htt
4
KCL

1 ¦¦
MCI
<
MCI

(CHLORAMBEN)
OOBUQU6
1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


€H«r
1988
3
1
0
0
1
0
0



1989
1
2
0
0
2
0
0


MYETTE
1988
4
8
0
0
8
0
0


Ftoro
1988
8
7
0
0
7
0
0


FRAMKUN
1989
1
4
0
0
4
0
0


FSEMONT
1986
8
4
0
0
4
0
0



1987
8.9
3
0
0
3
0
0



1988
6
4
0
0
4
0
0


GftEEKf
1988
6
10
7
0
0
7
0
0


GSUNEY
1988
10
5
0
0
5
0
0


•:'; x-'V-
1988
9
5
0
0
5
0
0


HAMILTON
1988
7
5
0
0
5
0
0


HAMCOCK
1988
5
6
0
0
6
0
0


HARD IN
1989
3
6
0
0
6
0
0


MARS2S0H
1988
6
6
0
0
6
0
0


H£KSV
1988
8
5
0
0
5
0
0


HOWAfW :
1989
1
6
0
0
6
0
0


WJH8O10T
1988
6
4
0
0
4
0
0

7-IA-91
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



..... WiL-BESkBL	
_.SAMPLE RESUIT5 .
«A#C£ Of
p«ncit»€ .
COUNTY
DATE
TOTAL
WELLS
SAMPlfO
$ Of
POSITIVE
WELLS
TOTAL «
SAMPLES
NUMBER OF
POSITIVE
SAMPLES
COXCEK-
TNATIOKS
-------
PESTICIDE SAMPLING IN THE STATE OF JOUA



	.KR .6IT84.W .. . .
SAMPL
SESW.TS
RANC€ OF
«snci$e
CCUfTY
OATe
TOTAL
WEIXS
SAMPLED
* OF
POSITIVE
WEILS
TOTAL #
SAMPLES
NUMBER Of
POSITIVE
SAff>LCS
CONCHf-
rUATtOMS
fU9/0


tTtAd
MONTH)

I
Ma
<
KCL

t
MCI
<
MCL

(CHLORAMBEN)
MAS3SON
1989
1
7
0
0
7
0
0


«ARASXA
1988
10
1
0
0
1
0
0



1989
4
6
0
0
6
0
0


MARION
198a
10
1
0
0
1
0
0



1989
4
11
0
0
11
0
0


Marshall
1988
7
6
0
0
6
0
0


kills
1986
6.8
3
0
0
3
0
0



1987
6.9
3
0
0
3
0
0



1988
5
6
4
0
0
4
0
0


MITCHELL
1984
7
1
0
0
1
0
0



1986
6
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


MONOKA
1988
10
5
0
0
5
0
0


MGHRHE
1988
7
3
0
0
- 3
0
0


MONTGOMERY
1988
9
3
0
0
3
0
0


MUSCATINE
1984
7
10
4
0
0
4
0
0



1988
4.5
10
0
0
10
0
0


O'BRtEK
198S
5
3
0
0
3
0
0



1986
4
6.7
1
0
0
5
0
0

7-IA-93
-------
PESTICIDE SAMPLING IK THE STATE OF IOWA



	 mi

	JlfStflTS 	
RAKE OF
coueftt'
TftATlQ#*
¦¦¦warn
pesticide
comrrY
PAU
TOTAL
was
SAMP3.EC
	
« OF
POSITIVE
mit
10JAL f
SAMPLES
Ni^BfcR £>F
P0S17IVE
SAMPLES


{TEAR
KMTK)

t
*a
<
MCI

I
NCI
<
MCL
(CHLOHMBEH)
O'WIENf
1989
3
5
0
0
5
0
0


OSCCOLA
1988
6
3
0
0
3
0
0


not
1986
6,8
2
0
0
2
0
0



1987
3
t
0
0
1
0
0



1988
9
4
0
0
4
0
0


: PALO ALTO
1983
5
1
0
0
1
0
0



1984
5
1
0
0
1
0
0



1989
1
5
0
0
5
0
0


PlYHOUTH
1988
6
11
9
0
0
9
0
0


POCAHONTAS
1989
1
4
0
0
4
0
0


Pou
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0


POTTAWATTAMIE
1986
6
12
2
0
0
2
0
0



1987
1,2,5
6
4
0
0
4
0
0



1988
7
3
0
0
3
0
0



1989
1
24
0
0
24
0
0


POWESHIEK
1988
6
4
0
0
4
0
0


RINGGOLD
1988
5
4
0
0
4
0
0


SAC
1986
6
1
0
0
1
0
0

7-1A-9 4
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA

!
WEU RESULTS
	SAW>k£ «ESVUS.._..
«AM& OF
C0NCEK-
TftAtl0K$
CuB/l)
PESTICIDE
COOtfTV
5
DATE
TOTAL
WE LIS
# 0*
POSITIVE
UEUS
TOfAl #
SAMPLES
NUMBER OF
POSITIVE
SAMPLES


am
>OJTH>

I
NCI
<
MIL

t
HCt
¦%
HCL
(CHL0RAM8EN)
SAC
1988
6
1
0
0
1
0
0



1989
3
3
0
0
3
0
0


SCOTT
1989
6
10
0
0
10
0
0


SHELBY
1984
6.8.9
4
0
0
4
0
0



1988
12
5
0
0
5
0
0


Jiai*
1984
3
6.9
3
0
0
3
0
0



1985
2
2
0
0
2
0
0



1988
7
10
0
0
10
0
0


start
1988
9
1
0
0
7
0
0


Tama
1988
8
8
0
0
8
0
0


TATU*
1989
1
4
0
0
4
0
0


IMJOM
1989
1
3
0
0
3
0
0


VAN BUREIt
1988
5
4
0
0
4
0
0


UAPEL.IC
1988
10.11
9
0
0
9
0
0


WARBEN
1988
9
12
0
0
12
0
0


WASHINGTON
1988
7
8
0
0
8
0
0


WAYNE
1988
9
11
3
0
0
3
0
0


WEBSTER
1988
5
8
0
0
8
0
0


V! HUE8A&O
1988
5
5
0
0
5
0
0


VsHNESHJEX
1984
3
1
0
0
1
0
0

7-IA-95
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL


SAXPL
*ESVUS...
8AKGE OF
CONCEK-*
TRAftOKS
{U9 A)
pesticide
CflUMTT
1 -¦ 1 .• ¦ . ¦ ' . 1 .
OATE
TOTAL
WEU-S
SAMPLED
« OF
POSITIVE
WEILS
SAMPLES
tflJHB£R OF
POSITIVE
SABLES
- - - ; . .
-

• *'¦ -•. 1
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



mi
RESET* . ..
SA*H
£ RESULTS '*•
KAMCe Of
CONC1M-
mnoH*
-------
PESTICIDE SAMPLING IN THE STATE OP I QUA



WEU
JFSULTS
SAHPL
RESULTS
«AME Of
CONCCK"
mnwe

PESTJCIM
ecutrry
PATt
TOTAL
WtUJ
SAMPLED
# Of
POSITIVE
urtis
TOTAL §
SAMPLES
NUMBER OF
POSITIVE
SAMPLES


(TEAR
XONTH)

t
NCI
:
¦¦¦ < ;
MCL

i.
MCI
'<'
KCl
(CHLORPYRIFOS)
CAR*OLt
1989
3
?
0
0
7
0
Q


CASS
1984
£,8
12
3
0
0
3
0
0



1986
6.8
2
0
0
2
0
0



1987
1,5
6.7
13
D
0
13
0
0



1988
7
5
0
0
5
0
0


CHN«
1986
6
1
0
0
1
0
0



1989
4
7
0
0
7
0
0


C£R«0 GORDO
1988
8
7
0
0
7
0
0


CHEROKEE
198S
5
8
0
0
8
0
0



1986
4.5
6.7
3
0
0
7
0
0



1989
3
4
0
0
4
0
0


e# 1CWSAW
1988
4
6
0
0
6
0
0


CUMeicf
1988
5
4
0
0
4
0
0


cuy
1984
7
2
0
0
2
0
0



1985
3.5
3
0
0
3
0
0



1986
4
6.7
3
0
0
6
0
0



1988
8
6
0
0
6
0
0


CLAYTON
1988
8
10
0
0
10
0
0


CUKTQ#
1984
8
1
0
0
1
0
0

7-IA-98
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL
RESULTS
SAMPLE »E3VtT?
DANCE OF .
CONCEK-
rwnc*s
fUB/0
pestjcu*
CMKVl
DATE
TOTAL
WELLS
SAMPLED
* OF
fesmvE
WELLS
TOTAL f
SAMPLES
(AMBER OF
POSITIVE
SAMPLES


(YEAR
WQNTH)

t
m.
<
mi

i
HCl
* <:•
tfCL
(CHLORPYR1FOS)
CI IN TO#
1988
12
8
0
0
8
0
0


CRAWFORD
1988
10
6
0
0
6
0
0


frAL US
1988
10
2
0
0
2
0
0



1989
3
11
0
0
11
0
0


WVIS
1988
5
4
0
0
4
0
0


DECATUR
1988
5
5
0
0
5
0
0


OTLAUARE
1984
9
3
0
0
3
0
0



1985
5
1
0
0
1
0
0



1986
6
1
0
0
1
a
0



1988
9
1
0
0
1
0
0



1989
4
12
0
0
12
0
0


D£S NOttiES
1988
8
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


OSCJClMSOtf
1988
8
6
0
0
6
¦*
0
0


ousuque
1984
5
3
0
0
3
0
0



1986
6
1
0
0
1
0
0



1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


tuner
1988
8
1
0
0
1
0
0



1989
1
2
0
0
2
0
0

7-IA-99
-------
PESTICIDE SAMPLING IN THE STATE Of IOWA



«E^L
pULTS ,
SAHPLE RESATS .
RAK& OP
COUOEK-
TKM10KS
CU9/D
PEST1C10C
COUHTY
DATE
TOTAL
WEUS
SAMPLES
POSITIVE
was
TOTAL #
SAMPLES
NUMBER of
POSITIVE
SAMPLES


am
MOtiTK)

t
no.


I
NO.
<
mi
(CHLOfiPYRlFQS)
FA«TT£
1988
4
8
0
0
8
0
0


ELOYO
1988
8
7
0
0
7
0
0


nUMKlIM
1989
1
4
0
0
4
0
0


FKEHONI
1986
8
5
0
0
5
0
0



1987
3,5
6.7.8.9
15
0
0
15
0
0



1988
6
4
0
0
4
0
0


GREENE
1988
6
10
7
0
0
7
0
0



1988
10
5
0
0
5
0
0


GUTHRIE
1988
9
5
0
0
5
0
0


HANftt-OK
1988
7
5
0
0
5
0
0


HANCOCK!
1988
5
6
0
0
6
0
0


HARDIN
1989
3
6
0
0
6
0
0


KARRISON
1988
6
5
0
0
5
0
0


HENRY
1988
8
5
D
0
5
0
0


HOWARD
1989
1
6
0
0
6
0
0


HUM80U>t
1988
6
4
0
0
4
0
0


IDA
1986
6.7
2
0
0
2
0
0



1988
4
4
0
0
4
0
0


IOWA
1984
5
9
1
0
0
2
0
0

7-IA-100
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



, , YELl
iESW.fS
f|Wl
RftSl^TS ,
«A*G£ Of ,
CONCCH-
TBATIOMS
(ug/U
PtSTJClfif
coumry
DAT 6
• total
WELLS
SAMPLED
it OF
POSITIVE
WEILS
torAt t
SAMPLES
DUMBER OF
POSITIVE
SAMPLES


at**
XOH1H)

t
mi
*
XCl

I
HCl
<
HCl
(CHLORPYRIFOS)
lOM
19 86
6
1
0
0
1
0
0



1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JACKSOU
1988
5
7
0
0
7
0
0


.JASPER
1988
7
12
15
0
0
15
0
0


JEfFEBSO#
1989
6
4
0
0
4
0
0


JOHMSCt*
1988
9
11
11
0
0
11
0
0


J OWES
1988
9
7
0
0
7
0
0


KBQKIX
1988
r
4
0
0
4
0
0


umtrrx
1988
7
10
10
0
0
10
0
0


LEE
1988
10.11
12
0
0
12
0
0


UKN
1988
6
13
0
0
13
0
0


louisa
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
0
3
0
0


LTOH
1988
6.8
5
0
0
5
0
0


MABiSOK
1988
9
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


MAHASKA
1988
10
1
0
0
1
0
0



1989
4
6
0
0
6
0
0

7-IA-101
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



$£U
lemrs „
, , *|WL
RESULTS
XAKC£ OF
:: PESHCjOE
coutnry
DATE
TOTAL
WELLS
SAMPLED
§ or
posmvr
WEILS
TOTAL f
SAMPLES
NtMBEft Of
POSITIVE
SAMPLES
«WC€W-
TfiATtOHS



<*€AR
MOtfTK)

t
NU
4	
*
NCL

I
KCt
<
MCL

(CKLORPYRIFOS)
MH!Ot
1988
10
1
0
0
1
0
0



1989
4
11
0
0
11
0
0


~URSKAH.
1988
7
6
0
0
6
0
0


MI US
1986
6
2
0
0
2
0
0



1987
S
6.7.9
14
0
0
14
0
0



1988
5
6
4
0
0
4
0
0


*1TC*EU
1984
7
1
0
0
1
0
0



1986
6
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


ttOttOMA
1988
10
5
0
0
5
0
0


#QK*0g
1988
7
2
0
0
2
0
0


HOMTGOHERT
1987
5
6.7
9
0
0
9
0
0



1988
9
3
0
0
3
0
0


huscatihe
1984
7
10
4
0
0
4
0
0



1988
4.5
10
0
0
10
0
0


O'SRfEK
1985
5
3
0
0
3
0
0



1986
4
6.7
1
0
0
5
0
0



1989
3
5
0
0
5
0
0


OSCEOLA
1988
6
3
0
0
3
0
0

7-IA-102
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA
'


mi
p«LTS
SAMPLE RESULTS
RANGE Of
CONCCK-
TfcAUOttS
fug/l)
pesticide
COWfT*
DATE
TOTAL
WE LIS
SAMPLED
*or
POSITIVE
WEILS
TOTAL *
SAMPLES
JHUMBEd Of
posmw
1 SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF I QUA


-
VELl
(JESUITS,
,SAHPl
RESULTS ,
RANGE Of
COUCtN-
trahoks
PESTICIOE
COUKTY
DATE
TOTAL
WE LI 5
SAMPLED
0 Of
positive
WELLS
TOTAL *
SAMPLES
NUMBER OF
POSITIVE
SAMPLES

-
am
WHTH)

I
mx
<
#CL

I
"«*•:
<
*CL
(CHLORPYRIFQS)
'SCOIT
1989
6
10
0
0
10
0
0


swurr
1984
6.8,9
4
0
0
4
0
0



1988
12
6
0
0
6
0
0


SIOUX
1984
3
6
2
0
0
2
0
0



19B5
2
2
0
0
2
0
0



1988
7
10
0
0
10
0
0


rro*r
1988
9
7
0
0
7
0
0


TAMA
1988
B
9
Q
0
9
0
0


TAYLOR
1989
1
4
0
0
4
0
0


yNlOK
1989
1
3
0
0
3
0
0


VAN BIIKEN
1988
5
4
0
0
4
0
0


WAPELLO
1988
10.11
9
0
0
9
0
0


WAS8EN
1988
9
17
0
0
17
0
0


WASHINGTON
1988
7
8
0
0
8
0
0


WAYNE
1988
9
11
3
0
0
3
0
0


WEBSTER
1988
5
8
0
0
8
0
0


WIKNE8ASQ
1988
5
5
0
0
5
0
0


WINNESHIEK
1984
3
1
0
0
1
0
0



1985
1
6
2
0
0
3
	
0
0

7-IA-104
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WEU
*e«&w
SA*HE REStftTS
RAKGC Of
COHCM-
TMTlOltS
(U0/O
pesncsoE
COUtiT*
WTt
TOTAL
WE LIS
SAMPtflJ
* OF
TOSITIVE
HiUS"
tOIAt #:1;NUMBER OF
SAMPLES ] POSITIVE
| SAMPLES


<*£AR
IWtTH}

t
NCI
' <
*Cl

I
| MCI,.
HO.
(CHLOKPYRIFOS)
¥HWE5HIEK
1988
8
9
0
0
9
0
0


WOODBURY
1985
5
9
0
0
9
0
0



1986
4
6
4
0
0
4
0
0



1988
4
9
0
0
9
0
0


WORTH
1988
8
3
0
0
3
0
0


URtfiHT
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WILIS OR SAMPLES . .


783
0
0
871
0
0

CfANAZ!lf£
ADAIR
1988
6
6
0
0
6
0
0


ADAMS
1988
12
ft
0
0
4
0
0


AiLAttAI&F
1988
8
10
0
0
10
0
0


APPANOOSF
1988
9
5
0
0
5
0
0


AU0U9OK
1988
6
3
0
0
3
0
0


KttTOH .
1984
5
1
0
0
1
0
0



1989
4
8
0
0
. 8
0
0


BtACK HAWK
1989
1.2
13
0
0
13
0
0


»OCME
1988
5
S
0
0
5
0
0


mener
1984
7
2
0
1
2
0
1
0.300


1985
1
2
0
0
2
0
0



1986
6
3
0
0
3
0
0



1988
8
9
0
0
9
0
0

7-IA-105
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WEU «E«ar«
;SAW>1
|T*ESUI
tTS ' - -
HAMCeoF
CONCCH-
Twnotts

PESriCJM
COUtfTY
DATE
TOTAL
WELLS
SAMPt©
# Of
POSITIVE
UfiLS
TOTAL t
SAMPLES
Of
POSITIVE
$AW>L£S


{YEAR
WKTH)

I
mx
MCI

* 1 ^
net | act
(CYAMA2INE)
8UCHAKA#
1989
2.5
11
0
0
11
0
0


fiUENA VISTA
1985
5
2
0
1
2
0
1
0.690


1986
4,5
6.7
4
2
1
9
4
2
0.700-2.800


1988
6
7
0
0
7
0
0


8UTX.ES
1988
5
7
0
0
7
0
0


CAL#OU»
1988
6
4
0
0
4
0
0


CARKOU
1989
3
7
0
0
7
0
0


CASS
1984
6,8
12
4
0
0
4
0
0



1986
6.8
3
0
0
3
0
0



1987
1,5
6.7.8
14
0
0
14
0
0



1988
7
5
0
0
5
0
0


CEDAR
1986
6
1
0
0
1
0
0



1989
4
7
0
0
7
0
0


CEPRO GORDO
1988
8
7
0
0
7
0
0


CHEROKEE
1985
5
10
10
0
1
13
0
2
0.260-0.340


1986
4,5
6.7.8
12
1
3
14
1
5
0.220-1.100


1989
3
4
0
0
4
0
0


CHICKASAW
1988
4
6
0
0
6
0
0


-------
PESTICIDE SAMPLING IN THE STATE OF IQUA



IfiLt
JESUITS
SAXPt,
RESULTS
RAWSfc OF
couecK"
TMtlOKS
CubA)
PESTICJCC
county
OAT£
TOTAL
WELLS
SAMPtEt)
* Of
POSITIVE
wits
total #
SAMPLES
HUH06H OF
POSITIVE
SAMPLES


tYSAR
MOHTH)

i
act
<
*CL

I
MCI
¦<
NCI
(CYANAZINE)
CLAY
1984
7
10
6
1
0
6
1
0
1.000


1985
3,5
10
4
0
0
4
0
0



1986
4,5
6.7.8
15
0
0
17
0
0



1988
8
6
0
0
6
0
0



1988
8
10
0
0
10
0
0


CiiNTON
1984
8
1
0
0
1
O
0



1988
12
8
0
0
8
0
0


CKAtffORO
19S8
10
6
0
1
6
0
1
0.210

DALLAS
1988
10
2
0
0
2
0
0



1989
3
11
0
2
11
0
2
0.270-0.840

DAVIS
1988
5
4
0
0
4
0
0


OECAtUR
1988
5
5
0
0
5
0
0


DELAWARE
1984
9
4
0
0
4
0
0



1985
3
1
0
0
1
0
0



1986
6
2
0
0
f\ 2
0
0



1988
9
1
0
0
i 1
I
0
0



1989
4
12
0
2
I 12
0
2
0.140-0.230

S£S MOINES
1988
6
1
0
0
\
\ 1
0
0



1989
5
6
0
0
\
\
\
0
0

7-IA-107
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA
j


WELl
RESULTS
ftftKPL
»ESViTS	
ftAKCE Of
TRdtlOHS
Pttrieioe
eau*TY
DAT*
TOTAL
WELLS
SAMPLED
* OF
POSITIVE
UELLS
TOfAt 0
SAMPLES
HUH8ER Of
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF 10UA



UfU
Jesuits
SAKPU
RESULTS
RAKCE OF
COU CEN-
TRA news
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA
:: '


*Ll
p«H.T$
.... SAMPl
RESULTS
«WE Qt
COUCCK»
TRATIOKS
fug/D
PtSTJCU*
COUWY
DAT!
TOTAL
WELLS
SAMPUD
0 Of
POSITIVE
UELL&
TOTAL #
SAMPLES
*'JM8£P OF
POSITIVE
samples


<«a*
MOKTK)

I
mx
<
WCL

I
xa
<
HCL
(CTANAZItiE)
KOS$UTH
1989
7
10
10
0
0
10
0
0


L£E
1986
10.11
12
0
1
12
0
1
0.290

LtWi
1988
6
11
0
0
13
0
0


LOUISA
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
0
3
0
0


LYON
1984
6
1
1
0
1
1
0
1.400


1985
7
5
0
0
5
0
0



1986
5
7.8
8
0
0
8
0
0



1988
6.8
5
0
0
5
0
0


HMISQ#
1988
9
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


IWNASKA
1988
10
1
0
0
1
0
0



1989
4
6
0
0
6
0
0


MARION
1988
10
1
0
0
1
0
0



1989
4
11
0
0
11
0
0


MARSHALL
1988
7
6
0
0
6
0
0


KILLS
1985
8
1
0
0
1
0
0


•
1986
6.8
5
0
0
5
0
0



1987
5
6.7,9
14
0
0
14
0
0

7-IA-110
-------
PESTICIDE SAMPLING IN THE STATE OF IQUA



WELL
E&RTS
*ESVt1S
RAKCE Of
cauctv-
TSAHCWS
CUB/U
PEST1CICE
COIMTY
DATE
total
UELtS
SAX PL ED
* Of
POSITIVE
WEILS
TOTAl #
SAMPLES
flUMBER OF
POSITIVE
SAMPLES


(TEA*
WJKTK)

I
KU.
<
MCI

t
net
<
MCI
(CYAMAZIHE)
MILLS
1988
5
6
4
0
0
4
0
0


XlTCHtLl
1984
7
1
0
0
1
0
0



1986
6
1
0
0
1
0
0



1989
t
7
0
0
7
0
0


HONOKA
1968
10
5
0
0
5
0
0


MONROE
1968
7
3
0
0
3
0
0


MONTGONCRt
1986
8
1
0
0
1
0
0



1987
5
6,7
9
0
0
9
0
0



1988
9
3
0
0
3
0
0


HUSCATIKE
1984
7
10
5
0
0
5
0
0



1988
4.5
10
0
0
10
0
0


0'68I6#
1985
5
3
0
0
4
0
0



1986
4
6.7
1
0
1
7
0
1
0,100


1989
3
5
0
0
5
0
0


OSCEOU
1985
10
1
0
0
1
0
0



1986
5
6.7.8
12
0
0
12
0
0



1968
6
3
0
0
3
0
0


PAGE
1986
6.8
2
0
0
2
0
0



1987
3
1
0
0
1
0
0

7-IA-lll
-------
PESTICIDE SAMPLING IM THE STATE OF IOWA



	mi.
ussier*
. . .. SAflPL
RESVITS	
RAKC€ Of
«WC£K-
mncms
(U9/1)
PESTICIDE
COMTY
&ATE
total
WELLS
SAMPLED
Of
POSITIVE
WPUS
' TOtAt #
SAMPLES
*UMB£R Of
POSITIVE
SAMPLES


au*
X#?H)

I
HE I

I '¦
HO.
• ¦<
WCL
(CYANAZINi)
PAGE '
1988
9
4
0
0
4
0
0


PALO ALTO
1983
5
1
1
0
1
1
0
4.000


1984
5
1
1
0
1
1
0
13.000


1986
5
6.7.8
16
0
1
16
0
1
0.100


1989
1
5
0
0
5
0
0


PiYMOUTlf
1988
6
11
9
0
0
9
0
0


POCAHONTAS
1986
7
2
0
0
2
0
D



1989
1
4
0
0
4
0
0


POU
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0


POTTAWATTAMIE
1985
8
2
0
0
2
0
0



1986
6,7,8
12
8
0
0
9
0
0



1987
1,2,5
6,7
19
1
0
19
1
0
1.700


1988
7
3
0
0
3
0
0



1989
1
24
0
0
24
0
0


POW£S«I£K
1988
6
4
0
0
4
0
0


R]KGGOLD
1988
5
4
0
0
4
0
0


SAC
1986
6
2
0
0
2
0
0



1988
6
1
0
0
1
0
0

7-IA-112
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL RESULTS
SAHPL
RESULTS
M#G£ OF
coNceX'
mnois
 -
$>ESTlC$t>E
court*
BATE
TOTAL
WELL*
SAAPtED
* Qf
POSITSYE
WELLS
TOTAL *
SAMPLES
NUMBER OF
POSITIVE
SAKPLES
'

tttAA
DONTK)

t
HCL
X
*CL

t
HCl
<
«Cl
(CYAMA21NE)
SAC
1989
3
3
0
0
3
0
0


6C0TT
1989
6
10
0
0
10
0
0


SHtlST
1984
6.8.9
5
0
1
5
0
1
0.110


1988
12
6
0
0
6
0
0


MOU*
1984
3
6.9
3
0
1
3
0
1
0.100


1985
2
7
4
1
1
5
1
2
0.550-1.000


1986
7.8
2
0
0
2
0
0



1988
7
10
0
0
10
0
0


STORY
1988
9
7
0
0
7
0
0


TANA
1984
4,5
6.7
3
0
0
5
0
0



1988
8
9
0
0
9
0
0


Ulttflft
1989
1
4
0
0
4
0
0


imioti
1989
1
3
0
0
3
0
0


VAK BIWEK
1988
5
4
0
1
4
0
1
0.660

WAPELLO
1988
10.11
9
0
0
9
0
0


WARDEN
1988
9
17
0
0
17
0
0


WASHINGTON
1988
7
8
0
1
8
0
1
0.170

WAYNE
1988
9
11
3
0
0
3
0
0


>OS7£R
1988
5
8
0
0
8
0
0

7-IA-113
-------
PESTICIDE SAMPLING IN THE STATE OF ICWA



WELl
iimri
SW>lf RESULTS
AAKCE Of
COHCtH-
TBArxort
P«T?ClO£
CCU«7Y
mt
10TAL
VEUS
SAMP1ED
* Of
POSIT IVI
WEILS
vIOIAl § I IWHSER OF
SAMPLES POSITIVE
SAMPLES


am
wamo

I
m.
<
KCL
1 *
| KM.
<
«CL
(OfANAZIME)
UIKNEBACO
1988
5
5
0
0
5
0
0


WIHMES^IEK ;
1984
8
1
0
0
1
0
0



1985
1
3
0
0
3
0
0



1986
6
2
0
0
2
0
0



1988
8
9
0
0
9
0
0


WOODBURT
198S
5
10
9
0
0
9
0
0



1986
4
6.7.8
6
0
1
6
0
1
0.150


1988
4
9
0
0
9
0
0


WORTH :
1988
8
3
0
0
3
0
0


WIGHT
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WELLS OR SAMPLES	


885
7
20
1215
11
32
0.100-13.000
DO>A
ADAIR
1988
6
6
0
0
6
0
0


ADAMS
1988
12
4
0
0
4
0
0


AlLAKAKfE
1988
8
10
0
0
10
0
0


APPANOOSE
1988
9
5
0
0
5
0
0


AUDUBON
1988
6
3
0
0
3
0
0


KEKTON
1989
4
8
0
0
8
0
0


BtACIC HAWC
1989
1.2
13
0
0
13
0
0


BOONE
1988
5
5
0
0
5
0
0


BREHE*
1988
8
9
0
0
9
0
0

7-IA-114
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WEU
HfSULTS

RESULTS
HAttCE Of
CONCEN-
TRATIONS
{ub/U
P£STl£iO€
COUNTY
: DATE.
TOTAL
WELLS
SAMPLED
« Of
rosmvc
wus
,,
TOtAl #
SAMPLES
NlABER OF
POStTIVE
SAMPLES


{TEA*
MONTH)

t
HCi
«L

t
MCI
' ¦
. WCL;
(OCPA)
tUCHAKAK
1989
2.5
11
0
0
11
0
0


ttJEHA. VISTA
1988
6
7
0
0
7
0
0


SUTLER
1988
5
7
0
0
7
0
0


caikou#
1988
6
4
0
0
4
0
0


CARROLL
1989
3
7
0
0
7
0
0


ass
1988
7
S
0
0
5
0
0


CfOAR
1989
4
7
0
1
7
0
1
0,030

CER80 QOROO
1988
8
7
0
0
7
0
0


CHEROKEE
1989
3
4
0
0
4
0
0


CHICKASAW
1988
4
6
0
0
6
0
0


CtASkX
1988
5
4
0
0
4
0
0


ClAT
1988
8
6
0
0
6
0
0


clatton
1988
8
10
0
0
10
0
0


CLINTON
1988
12
8
0
0
8
0
0


CRAUfOSD
1988
10
6
0
0
6
0
0


OALiAS
1988
10
2
0
0
2
0
0



1989
3
11
0
0
11
0
0


MVIS
1988
5
4
0
0
4
0
0


OECATUR
1988
5
5
0
0
5
0
0


&SLAUARE
1988
9
1
0
0
1
0
0

7-IA-115
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



yeu
resutTS 	
,, „w
RESULTS
RAttCE OF
CONCCK-
TRAUOlrt
ton;
pesticide
COUHTf
PATE
TOTAL
VEILS
SAMfn.ee
# Of
POSITIVE
WEILS
total f
SAMPLES
-«rUMB£R
POSITIVE
SAMPLES


{TEAR
**TH}

i
I 1 <
NCI | *Cl

i
KCi
... .
HCl
(OCPA)
MLAUAIft
1989
4
12
0 2
12
0
2
0.010

«S HOtNES
1988
8
1
0 0
1
0
0



1989
5
6
0
0
6
0
0


&!C*!NSOM
1988
8
6
0
0
6
0
0


ftoeuauE
1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


EWCT
1988
8
1
0
0
1
0
0



1989
1
2
0
0
2
0
0


FAYETTE
1988
4
8
0
0
8
0
0


ILOTO
1988
8
?
0
0
7
0
0


JRAHICUX
1989
1
4
0
0
4
0
0


IREMONT
1988
6
4
0
0
4
0
0


fiftEEUE
1988
6
TO
7
0
0
7
0
0


cmesv
1988
10
5
0
0
i
0
0


GUTWUE
1988
9
5
0
0
5
0
0


HAMILTON
1988
7
5
0
0
5
0
0


fcAMCOCK
1988
5
6
0
0
6
0
0


HARDIN
1989
J
6
0
0
6
0
0


HAftStSON
1988
6
6
0
0
&
0
0


HENRY
1988
8
5
0
0
5
0
0

7-IA-116
-------
PESTICIDE SAMPLING IN THE STATE OF 10UA



VEIL
KSULTf
SAMPLE RESULTS
RAKCE Of
COUCCK- ¦
TRAHMtS


t
no.
ML

t
net
*
MCL
CDCfA)
HOWARD
1989
1
6
0
0
6
0
0


KLM80U5T
1988
6
4
0
0
4
0
0


IDA
1988
4
4
0
0
4
0
0


IOWA
1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JACK SCW
1988
5
7
0
0
7
0
0


JASPE*
1988
7
12
15
0
0
15
0
0


jgffeasoM
1989
6
4
0
0
4
0
0


JOH*SOU
1988
9
11
11
0
0
11
0
0


JQHE3
1988
9
7
0
0
7
0
0


KSOKUK
1988
7
4
0
0
4
0
0


KOSSUTH
1988
7
10
10
0
0
10
0
0


tie
1988
10.11
12
0
0
12
0
0


LIHN
1988
6
13
0
0
13
0
0


tGUISA
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
0
3
0
0


ITOK
1988
6.8
S
0
0
5
0
0


HADI$0*
1988
9
1
0
0
1
0
0


¦
1989
1
7
0
0
7
0
0

7-IA-117
-------
PESTICIDE SAMPLING IN THE STATE OF IQUA
1





I'ufeakrs-vr
RAHGf Of
concoj-
TRAriOKS
fUB/U
wsTicioe
C&MT1
CAT£
, „
10TAI
WEltS
SAMPiEC
: * Of
POSITIVE
WEILS
n ,
TOIAl #
SAMPLES
1WH8ER Of
postrtvE
SAMPLES


(TW
HONTH)

t
NCI
<
«l

S
< ¦.
MCL
(DCPA)
NAKASKA
1988
10
1
0
0
1
0
0



1989
4
6
0
0
6
0
0


MAX!OV
19B8
10
1
0
0
1
0
0



1989
4
11
0
0
11
0
0


K»«1tUU
1988
7
6
0
0
6
0
0


HiuS
1988
5
6
4
0
0
4
0
0


«ITC»KU
1989
1
7
0
0
7
0
0


MONOHA
1988
10
5
0
0
5
0
0


. MOHME
1988
7
3
0
0
3
0
0


HOUTOCwm
1988
9
3
0
0
3
0
0


wjScatjke
1988
4.5
10
0
0
10
0
0


0<88l«
1989
3
5
0
0
5
0
0


«cm*
1988
6 -
3
0
0
3
0
0


?AC£
1988
9
4
0
0
4
0
0


PALO ALTO
1989
1
5
0
0
5
0
0


PLYMOUTH
1988
6
11
9
0
0
9
0
0


POCAHONTAS
1989
1
4
0
0
4
0
0


POtf
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0

7-IA-118
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA

I
J
i
iEU
?ESUITS
SAtfPLE *EWtTS
RAKGt OF
CONCCtt-
TRATIOHS
<«am
PESTIC1PE
COUKTY
DATE
TOTAL
MEUS
SAMPLED
* Qf
POSITIVE
WEILS
TOTAL •
SAMPLES
mMBEft OF
POSITIVE
SAMPLES


(TEAft
WttTK)

t
HCt
<
«L

I
HCL
<
. ML.
COCPA)
PCTTAWATTAKiC
1988
7
3
0
0
3
0
0



1989
1
24
0
0
24
0
0


POWESHIEK
1988
6
4
0
0
4
0
0


«!*CGOU>
1988
5
4
0
0
4
0
0


SAC
1988
6
1
0
0
1
0
0



1989
3
3
0
0
3
0
0


SCOTT • •
1989
6
10
0
0
10
0
0


SKEllY
1988
12
6
0
0
6
0
0


SIOUX
1988
7
10
0
0
10
0
0


story
1988
9
7
0
0
7
0
0


TAMA
1988
8
9
0
0
9
0
0


TAftOft
1989
1
4
0
0
4
0
0


imtcw
1989
1
3
0
0
3
0
0


VAK BUftEW
1988
5
4
0
0
4
0
0


UAPELLO
1988
10.11
9
0
0
9
0
0


VARSEK
1988
9
17
0
0
17
~
0


1MS#1NGT0N
1988
7
8
0
0
8
0
0


UAYNE
1988
9
11
3
0
0
3
0
0


VEBSTER
1988
5
8
0
0
8
0
0


WINKEBAflO
1988
5
5
0
0
5
0
0

7-IA-119
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



„ , , V^,
RESULT* „ ,
, S**»V
RESULTS
RAKGE OF
COUCEK-
TKAtlOKS

cou#ry
DATE
TOTAL
WELLS
SAMPtEfl
* Of
POSITIVE
WEILS
TOTAl #
SAMPLES
NUMBER OF
POSITIVE
SAMPLES


am
MONTH}

I
MCI
<
act

I
MCt
<
*CL
(DCPA)
MJ1WE3HSEK
1988
8
9
0
0
9
0
0


WOODBURY
1988
4
9
0
0
9
0
0


WORTH
1988
8
3
0
Q
3
0
0


wstm
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WELLS OR SAMPLES


686
0
3
686
0
3
0.010-0.030
~ &DC
B8EMES
1984
7
2
D
0
2
0
0



1985
1
1
0
0
1
0
0



1986
6
2
0
0
2
0
0


BUEMA VISTA
1985
5
2
0
0
2
0
0



1986
4,5
6.7
4
0
0
8
0
0


CASS
1984
6,8
12
3
0
0
3
0
0



1986
6
1
0
0
1
0
0


CEDAR
1986
6
1
0
0
1
0
0


CHEROKEE
1985
5
8
0
0
8
0
0



1986
4,5
6.7
3
0
0
7
0
0


CLAY
1984
7
2
0
0
2
0
0



1985
3.5
3
0
0
3
0
0



1986
4
6.7
3
0
0
6
0
0


CLINTON
1984
8
1
0
0
1
0
0

7-IA-120
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



_J£kLJ£»US
SAKPLE RESULTS
RANGE OF
PtSTJClOE
cowry
OATt
10TAL
WELIS
SWi3>
# Of
posinvt
wus
TOTAL #
SAMPLES
i
:-NUMBER Of ¦
POSITIVE
SAMPLES
CONCCM*
mriows
fug/0


CT«*
**TK)

I
HC4.
•<
KCL

t
HCL
1 *
-#CL

~ (000)
DELAWARE
1984
9
4
0
0
4
0
0



1985
3
1
0
0
1
0
0



1986
6
1
0
0
1
0
0


OUWJQUE
1984
5
3
0
0
3
0
0



1986
6
1
0
0
1
0
0


IDA
1986
6.7
2
0
0
2
0
0


IOWA
1984
5
9
1
0
0
2
0
0



1986
6
1
0
0
1
0
0


WTCHILi
1984
7
1
0
0
1
0
0



1986
6
1
0
0
1
0
0


HUSCATJHE
1984
7
10
4
0
0
4
0
0


O'BfilEH
1985
5
3
0
0
3
0
0



1986
4
6.7
1
0
0
5
0
0


PAUE
1986
6
1
0
0
1
0
0


PALO AITO
1983
5
1
0
0
1
0
0



1984
5
1
0
0
1
0
0


SAC
1986
6
1
0
0
1
0
0


KHE16T
1984
6,8,9
4
0
0
4
0
0


&JOJX
1984
J
6.9
3
0
0
3
0
0

7-IA-121
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA




RESULT?
?AHPL
RESULTS
«AW!E Of
COHCE#-
TSAT tC*S
-------
PESTICIDE SAMPLING I* THE STATE OF IOWA




RESULTS
, SWPU
RESULTS
RAKGt Of
PESTJCiOE
cowtrr.	
MT6
"TOTAL
MOtS
SAMPLED
# OF
POSITIVE
ueus :
";TOW'# :
SAMPLES
#U*B£S£)F
POSITIVE
5AWICK
;co«c£ti-
THATIOKS
(UB/O


<*£AP
HOtfTH)

i
Ha
X
MCI

i
HCL
<
KCL

~ CODE)
CLINTON
1984
a
1
0
0
1
0
0


DELAWARE
1984
9
4
0
0
4
0
0



1985
3
1
D
0
1
D
D



1986
6
1
0
0
1
0
0


DUBUQUE
1984
5
3
0
0
3
0
0



1986
6
1
0
0
1
0
0


IDA
1986
6.7
2
0
0
2
0
0


IOWA
1984
5
9
1
0
0
2
0
0



1986
6
1
0
0
1
0
0


WTCHELL
1984
7
1
0
0
1
0
0



1986
6
1
0
0
1
0
0


MUSCAT IUlf
1984
7
10
4
0
0
4
0
0


O'BRIE*
1985
5
3
0
0
3
0
0



1986
4
6.7
1
0
0
5
0
D


PAGE
1986
6
1
0
0
1
0
0


PALO ALTO
1983
5
1
0
0
1
0
0



1984
5
1
0
0
1
0
0


SAC
1986
6
1
0
0
1
0
0


SfcEUT
1984
6.8.9
4
D
0
4
0
0

7-IA-123
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



. veu.
pW.T«
	Risers.
«ANC£ OF
awct#-
TMTIOHS
fUB/O
PESTICIDE
COUWfY
DATE
TOTAL
VELIS
SAMPI&
# Of
positive
weiti
tarn #
SAMPLES
HUH8ER -OF i
POSITIVE
SAMPLES


ttEAft
MONTH)

t
NCI
MCL

t
NC4.
KCL
~ (DDE)
SIOUX
1984
3
6.9
3
0
0
3
0
0



1985
2
2
0
0
2
0
0


wmiEsme*
1984
3
1
0
0
1
0
0



1985
1
6
2
0
0
3
0
0


VfOOOBURIT
1985
5
9
0
0
9
0
0



1986
4
6
4
0
0
4
0
0

TOTAL DISCRETE
HELLS OR SAMPLES	


59
0
0
106
0
0

~ DOT
B*EWE*
1984
7
2
0
0
2
0
0



1985
1
1
0
0
1
0
0



1986
6
2
0
0
2
0
0


BUENA VISTA
1985
5
2
0
0
2
0
0



1986
4,5
6.7
4
0
0
8
0
0


CASS
1984
6,8
12
3
0
0
3
0
0



1986
6
1
0
0
1
0
0


CESAR
1986
6
1
0
0
1
0
0


CHEROKEE
1985
5
8
0
0
8
0
0



1986
4,5
6.7
3
0
0
7
0
0


CUY
1984
7
2
0
D
2
0
0

7-IA-124
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



		 J£UJ.SE»L.ti.	
. 5WL
RESUiTS ,
ftAKGE Of
ewc£M-
TSAHOKS
P£*TICI&€
COUWTT

tWiU.
WEUS
SAMPLED
* Of
«»ITJVE
WEILS
tdTM »
SAMPLES
NUMBER OF
POSITIVE
SAMPLES



1983
5
1
0
0
1
0
0



1984
5
1
0
0
1
0
0

7-IA-125
-------
PESTICIDE SAMPLING IN THE STATE Of IQUA



U£U RESULTS
SAHPL
E RE$ytTS-:'::^
*AW£ Of
. CONCEN-
TRA! IOKS
(UgA)
PESTJCIM
CCMfTV
DATE
TOTAL
WELLS
SAMPtfO
* Of
POSITIVE
UEttS
total *
SAHPLES
KUNBER Of
POSITIVE
SAICLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA




BESETS
SAKPL
RESULT*
fiAKSE. OF
; ;C0HC£fi»
mnc*s
-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



	
RESULTS

REStATS
«ft*ce of
CONCSN-
TRAnQTS
{U9/0
ptsncioe
COUNTY
DATE
total
«lLLS
SAMPLED
$ Of
POSITIVE
WELLS
,, „
TOTAL P
SAMPLES
NUMBER OF
POSITIVE
SABLES


{TEAR
MONTH)

I
Ma
,
mi

t
Ma
KCL
~ 
-------
PESTICIDE SAMPLING IN THE STATE OF I DMA



WpLi
KSULfS
SAMPL
*esyu?
8ANCE OF
caucfK-
TRAT1QNS


I
<
mi

I
net
<
HCL
~ (DES_ETHYL ATRA2INE}
kunbqujt
1988
6
4
0
0
4
0
0


IDA
1988
4
4
0
0
4
0
0


IOWA
1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JACKSO*
1988
5
7
0
0
7
0
0


JASPER
1988
7
12
15
0
z
15
0
2
0.230-0.250

jgrrERSo*
1989
6
4
0
0
4
0
0


JOHNSON
1988
9
11
11
0
0
11
0
0


jones
1988
9
7
0
0
7
0
0


KSOKWC
1988
7
4
0
0
4
0
0


KOSSUTH
1988
7
10
10
0
0
10
0
0


LEE
1988
10.11
12
0
1
12
0
1
0.720

UlW
1988
6
13
0
0
13
0
0


LCMtSA
1988
4
6
0
1
6
0
1
0.200

LUCAS
1988
7
3
0
0
3
0
0


LYON
1988
6.8
5
0
3
5
0
3
0.160-1.220

KADiSOH
1988
9
1
0
0
1
0
0



1989
1
7
0
2
7
0
2
0.180-0.250

*AkAUCA
1988
10
1
0
0
1
0
0

7-IA-129
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA
1


l^Ll
NESULtS
SAMPLE RESULTS
RANGE OF
eouccN-
TfiATlOW
-------
PESTICIDE SAMPLING IN THE STATE Of IOWA



WELL
RESULTS ,
SAHPL
RESULTS
RANGE Of
ttWCfK-
rwmo«s
fesrjCiM
COUNTY
PATE
¦ tOTAL ¦¦¦
WELLS
SAN in. ft)
POSITIVE
tfflis
TOTAL 9
SAMPLES
NIMBER OF
POSITIVE
SAMPLES


(YEAR
MONTH)

I
na
I
¦ ' 
-------
PESTICIDE SAMPLING IN THE STATE Of IOWA
:


m

SAM»L£ *ESVITS
*Att6£ OF
CWtfK-
TRAMCWS
fUB/O
PEST J CI OF
COOtfTV
pate
TOTAt
VEILS
SAMPLED
# OF
POSITIVE
WEUS
TOfAl #
SAMPLES
»UMB£R Of
POSITIVE
SAMPLES


tYEAR
WWTH)

I
MCI
<
net

t
MU
mi
~ (DES_ETHVL ATRA2INE)
UOODBURy
1988
4
9
0
0
9
0
0


WORTH
1988
8
3
0
0
3
0
0


WBifiWT
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WILLS OR SAMPLES


686
0
24
686
0
24
0.110-2.860
~«S_ISOPIlQPYL ATRAJ3I
mm
1988
6
6
0
0
6
0
0


ADAMS
1988
12
4
0
0
4
0
0


M.LMMKEI
1988
8
10
0
0
10
0
0


APPANOOSE
1988
9
5
0
0
5
0
0


AUOUBOK
1988
6
3
0
0
3
0
0


BENTOW
1989
u
8
0
0
a
0
0


BUCK HAWK
1989
1.2
13
0
0
13
0
0


BOONE
1988
5
5
0
0
5
0
0


BREMER
1988
8
9
0
0
9
0
0


BUCHANAN
1989
2.5
11
0
0
11
0
0


SUEHA VISTA
1988
6
7
0
0
7
0
0


8UTII8
1988
5
7
0
0
7
0
0


^CAIHOUN^;;
1988
6
4
0
0
4
0
0



1989
3
7
0
0
7
0
0


' CASS
1988
7
5
0
0
5
0
0


CEOAfl
1989
4
7
0
0
7
0
0

7-IA-132
-------
PESTICIDE SAMPLING IN THE STATE OF JOUA



. .mi.BfSW.TS
SAMPL
RESULTS
RANCE or
PEsricjfif
coutm
PATE
TOTAL
V WELLS
SAMPLES
« OF
POSITIVE
WELLS
TOTAL #
SAMPLES
: NUMBER OF
POSITIVE
SAMPLES
CONCf#-
TBAttOHS
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



V£ll
RESULTS
S«*>L
resets
RAHC£ Of
GOMttH-
TSAt JOtrt
	 ¦ ¦
pEsnaoe
cawr*
»T£
total
VEILS
SAMPLES
* OF
POSITIVE
WEILS
TOTAL $
SAMPLES
NIMSgfi
POSITIVE
SAW LIS


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



VEU

SAHPL
RESULTS
RAKCE Of
CONCEK
THAT 10SS
CUBA)
PtSTieiCE
COUWf*
DAT£
TOTAL
WELLS
SAjrtec
* Of
POSITIVE
WELLS
TOTAL #
SAWi.ES
Of
POSITIVE
SAWLCK


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WE 1, t
pm,Tf ,
SAWL
RESULTS
HANCE Of
cai«t(-
T»Ancws
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL RESULTS
s*m
RESULTS
RANGE OF
CONCEN-
TRATIONS

PESTTCIOE
COUHTY
PATE
total
WELLS
SAX PLED
# OF
POSITIVE
wau
TOTAL ff
SAMPLES
tKMBgfl or
POSITIVE
SAKPLE8


(YEAH
TOiTK)

s
NCI
<
HCL

I
««.
<
#CL
~ (DESJSOPROPYL ATRAZJ
SIOUX
1988
7
10
0
2
10
0
2
0.110-0.160

STORY
1988
9
7
0
0
7
0
0


TAMA
1988
8
9
0
4
9
0
4
0.110-0.470

TAHOR
1989
1
4
0
0
4
0
0


ONjOti
1989
1
3
0
0
3
0
0


VAN &UREW
1988
5
4
0
0
4
0
0


MA PEL10
1988
10.11
9
0
0
9
0
0


WAR8EN
1988
9
17
0
0
17
0
0


WASHINGTON
1988
7
8
0
0
8
0
0


WATNE
1988
9
11
3
0
0
3
0
0


. i . ..,11 .
WEBSTER
1988
5
8
0
0
8
0
0


VI HftEBASO
1988
5
5
0
0
5
0
0


WINNESHIEK
1988
8
9
0
0
9
0
0


W0Q09URT
1988
4
9
0
0
9
0
0


WORTH
1988
8
3
0
0
3
0
0


WHISHT
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WEILS OR SAMPLES


686
0
23
686
p
23
0.100-3.540
DJA2IMOK
*0A1R
1988
6
6
0
0
6
0
0


ADAMS
1988
12
4
0
0
4
0
0


ALLAMAKEE
1988
8
10
0
0
10
0
0

7-IA-137
-------
PESTICIDE SAMPLING IN THE STATE OF IQUA



WLl RESULTS
S«*>1
RESULTS
*AMCE OF
CONCEN-
TRATION'S
(U9/U
pesneiae
COftm
PATE
TOTAL
ME LIS
SAMPLED
# Of
POSSTSVf
weus
TOTAL »
SAMPLES
NUMBER Of
POSITIVE
SAMPLES


(YEAR
HWTK)

. I <
Ma | *CL

t
wet
<
WCL

(DIAZINON)
APPANOOSE
1988
9
5
0
0
5
0
0


AUOUBOti
1988
6
3
0
0
3
0
0


fiENrOM
1989
4
8
0
0
8
0
0


BUCK HAUK
1989
1.2
13
0
0
13
0
0


$OOKE
1988
5
5
0
0
5
0
0


6RENER
1988
8
9
0
0
9
0
0


BUCHANAN
1989
2.5
11
0
0
11
0
0


WJENA VISTA
1988
6
7
0
0
7
0
0


•UTLER
1988
5
7
0
0
7
0
0


CALHOUN
1988
6
4
0
0
4
0
0


CARRfXL
1989
3
7
0
0
7
0
0


CASS
1987
1,5
6.7
13
0
0
15
0
0



1988
7
5
0
0
5
0
0


CEDAR
1989
A
7
0
0
' 7
0
0


CERRO GOR&O
1988
8
1
0
0
7
0
0


CHEROKEE
1989
3
4
0
0
4
0
0


CHICKASAW
1988
4
6
0
0
6
0
0


CUWK£
1988
5
4
0
0
4
0
0


CUV
1988
8
6
0
0
6
0
0


CUVTW
1988
8
10
0
0
10
0
0

7-IA-138
-------
PESTICIDE SAMPLING IN THE STATE OF I OVA
:



aesuiTs
, SA.WL
*ESW.T$
RAHCe OF
CONCEN-
TRATIONS
Cug/U
»»£$TJCIDE
COUWTY
DATE
TOTAL
WELLS
SAM Pi CD
0 OF
POSITIVE
WEilS
TOTAL #
SAMPLES
ftUMtt* Of
POSITIVE
SAWIES


tYEAd
WNTK>

I
na
< ¦
no.

I
HCi
K
(DIAZINON)
CLINTON
1988
12
8
0
0
8
0
0


CEAUTORC
1988
10
6
0
0
6
0
0


0ALLAS
1988
10
2
0
0
2
0
0



1989
3
11
0
0
11
0
0


. OAV1S
1988
5
4
0
0
4
0
0


DECATUR
1988
5
5
0
0
5
0
0


Of UAWAR£
1968
9
1
0
0
1
0
0



1989
4
12
0
0
12
0
0


OEfi MOINES
1988
8
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


OICKIKSO#
1988
8
6
0
0
6
0
0


oueuoue
1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


EMWT
1988
8
1
0
0
1
0
0



1989
1
2
0
0
2
0
0


fAYfTTf
1988
4
8
0
0
8
0
0


FLOY&
1988
8
7
0
0
7
0
0


FRANKLIN
1989
1
4
0
0
4
0
0


FBEHOUT
1986
8
1
0
0
1
0
0



1987
3,5
6,7,8,9
15
0
0
15
0
0

7-IA-139
-------
PESTICIDE SAMPLING !M THE STATE OF IOWA




RESULTS
	s«*u
W-SUiTS .
WKCE OF
CONCEM-
r*AtIONS


t
nci
<
*CL

fc
HCl
<
«L
(DIA2IMON)
F8EH0MT
1988
6
4
0
0
4
0
0


tSEtKE
1988
6
10
7
0
0
7
D
D



1988
10
5
0
0
5
0
0


OUTWIE
1988
9
5
0
0
5
0
0


WWLTO*
1988
7
5
0
0
5
0
0


HAKCOCK
1988
5
6
0
0
6
0
0


HARDIK
1989
3
6
0
0
6
0
0


KARftlSOM
1988
6
5
0
0
5
0
0


KE>mr
1988
e
S
0
0
5
0
0


HOWARD
1989
1
6
0
0
6
0
0


HUM80U>T
1988
6
4
0
0
4
0
0


IDA
1988
4
4
0
0
4
0
0


IOWA
1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JACKSON
1988
5
7
0
0
7
0
0


JASPER
1988
7
12
15
0
0
15
0
0


JEFFE8SOH
1989
6
4
0
0
4
0
0


JOHKSOM
1988
9
11
11
0
0
11
0
0


JOhEE
19S8
9
7
0
0
7
0
0

7-IA-140
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



mil
it&ftTS
SAMPU
*£$**?? „ ,
RANGE Of
CONCtW-
TfiAUCWS
(ufl/U
parities
COUKTV
DATf,
TOTAL
WELLS
SAMPLED
* OF
POSITIVt
U6LIS
TOTAL #
SAMPLES
«AB£R OF
POSITIVE
SAMPLES
-

-------
PESTICIDE SAMPLING IN THE STATE OF I QUA



UELl RESULTS
SA*PL£ RESULTS
RAtWE OF
SCONCE*-
TRATIOWS
<08/U
PESriCiOE
COWfTY
DATE
TOTAL
WELLS
SAMPI£0
« OF
rosmvt
WELLS
TOTAL 0
SAMPLES
WifcBER OF
POSITIVE
SAMPLES


(TEAft
XQHTH}

I
*Cl
<
*1

I
*Cl
<.
«CL
(D1A2IN0N)
KOKTBHERT
1987
5
6.7
9
0
a
9
D
0



1988
9
3
0
0
3
0
0


xuscAnwE
1988
4.5
10
0
0
10
0
0


O'BRJEN
1989
3
5
0
0
5
0
0


OSCEiOLA
1988
6
3
0
0
3
0
0


PAGE
1987
3
1
0
0
1
0
0



1988
9
4
0
0
4
0
0


PALO At TO
1989
1
5
0
0
5
0
0


PiYMOUT*
1988
6
11
9
0
0
9
0
0


POCAHONTAS
1989
1
4
0
0
4
0
0


POLK
1938
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0


POTTAWATTAMIE
1986
12
1
0
0
1
0
0



1987
1,2,5
6.7
19
0
0
25
0
0



1988
7
3
0
0
3
0
0



1989
1
24
0
0
24
a
0


POWESHIEK
1988
6
4
0
0
4
0
0


R.iN£SOLb
1988
5
4
0
0
4
0
0


SAC
1988
6
1
0
0
1
0
0

7-IA-142
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



ueu besults
<^tfPL
RESULTS
RANGE OF
CONCEk-
TRAUOKS
fug/l)
pesticide
COUKTV
DATE
TOTAL
WELLS
SAMPLED
*OP
POSITIVE
WEILS
TOTAL #
SAMPLES
NUMBER OF
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOMA



WELL
RESULTS
SAMPL
RESULT^, ,
RANGE. Of
PESTICIDE
couunr
PATE
TOTAL
WELLS
SAMPLED
# OF
POSITIVE
WELLS
TOTAL «
SAMPLES
KUMBEft OF
POSITIVE
SAMPLES
CONCEN-
THAT 10*5
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



	WJ..V
RESETS ,
.......SAWLE RESAT3. ..
RANGE Of
COtiCEN-
T*Af10#S
(U9/1)

cam*
DATE
TOTAL
WEUS
SAMPLES
* OF
TOSITIVE
UEtU
TOTJtt. #
SAMPLES
HUH8£tt CF
POSITIVE
SAMPLES




t
rnx
<
MCI

I
aci
<
«a
(OICAMBA)
CASS
1986
6
1
0
0
1
0
0



1988
7
5
0
0
5
0
0


emit „ -
1986
6
1
0
0
1
0
0



1989
4
7
0
0
7
0
0


CERftO GORDO
1988
8
7
0
0
7
0
0


CHEROKEE
1985
5
8
0
0
8
0
0



1986
4,5
6.7
4
0
0
8
0
0



1989
3
4
0
0
4
0
0


CHICKASAW
1988
4
6
0
Q
6
0
0


aAsre
1988
5
4
0
0
4
0
0


CI AT
1984
7
2
0
0
2
0
0



1985
3.5
3
0
0
3
0
0



1986
4
6.7
4
0
0
7
0
0



1988
8
6
0
0
6
0
0


ClAVTO*
1988
8
10
0
0
10
0
0


CUHTOK
1984
8
1
0
0
1
0
0



1988
12
8
0
0
8
0
0


CRAWFORD
1988
10
6
0
0
6
0
0


OALUS
1988
10
2
0
0
2
0
0


'
1989
3
11
0
0
11
0
0

7-IA-145
-------
PESTICIDE SAMPLING IN THE STATE OF I QUA



WELL RESULTS
s*m
SESUUS
RAMCt OF
CONCEM-
TS At 1C*S
 OF
POSITIVE
SAMPLES


**TH>

I
net
<
KCL

t
MCI
*a
(01 CAMS A)
MVIE
1988
5
4
0
0
4
0
0


• OECATUft
1988
5
5
0
0
5
0
0


DELAWARE
1984
9
4
0
0
4
0
0



1985
3
1
0
0
1
0
0



1986
6
1
0
0
1
0
0



1988
9
1
0
0
1
0
0



1989
ii
12
0
0
12
0
0


DES KOINES
1988
8
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


BIOCIKSOti
1988
8
6
0
0
6
0
0


OUBDOUf
1984
5
3
0
0
3
0
0



1986
6
1
0
0
1
0
0



1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


EMWsT
1988
8
1
0
0
1
0
0



1989
1
2
0
0
2
0
0


fAYETTE
1988
4
8
0
0
8
0
0


FLOYD
1988
8
7
a
0
7
0
0


FRANKLIN
1989
1
4
0
0
4
0
0


. FREMONT
1985
8
2
0
0
2
0
0

7-IA-146
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



,,, ,-MELi.
RESULTS
- v.- iSWWtE:^ES«,T$
RANGE. Of
:.y::Caic£H'
T»*notrs
(UB/U
pesticide
COUNT t
0A7E
TOTAL
WELLS
SAMPLED
# OF
POSITIVE
WELLS
TOTAL # I 8UMB€R Of
SAMPLES J POSITIVE
SAMPLES


am

i
HCl
<
*Cl

I
*Ci
<
MCL
(DICAMBA)
FEEHQNT
1986
8
4
0
0
4
0
0



1988
6
4
0
0
4
0
0


G8EEKE
1988
6
10
7
0
0
7
0
0


gruhot
1988
10
5
0
0
5
0
0


RJTKRJ-E
1988
9
5
0
0
5
0
0


IHW3LTC#
1988
7
5
0
0
5
0
0


BAKCOCK
1988
5
6
0
0
6
0
p


KARDIH
1989
3
6
0
0
6
0
0


HARftlSOU
1988
6
6
0
0
6
0
0


ttgBRy
1988
8
S
0
0
5
0
0


HOWARD
1989
1
6
0
0
6
0
0


WJ»CC«.OT
1988
6
4
0
0
4
0
0


IDA
1986
6.7
2
0
0
2
0
0



1988
4
4
0
0
4
0
0


IOWA
1984
5
9
1
0
0
2
0
0



1986
6
1
0
0
1
0
0



1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JACK SO#
1988
5
7
0
0
7
0
0


JASPER
1988
7
12
15
0
0
15
0
0

7-IA-147
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA
1


WE 11
ESUS.TS
SAMPLE SESUITS
#AWiE Of
COHCtH
THAT 1 cms
fu&m
PEsuciae
	-	-		
COUtfT>
OATE
total
WELLS
SAHW.ED
# OF
. POSITIVE
WEILS
rorM i
samples
«UMB£fl OF
POSITIVE
SAWLEt


.... ; . :


ttCL

£
NCI
<1
MCL
'
-------
PESTICIDE SAMPLING IN THE STATE OF IQUA



	, . .Wll
ftBULTf 	

sesyqs
RAKCE OF
CONCfH-
tftfinotfs
(Ug/O
PESTICIDE
cattfn
PATE
TOTAL
WELLS
sakpuco
# OF
POSITIVE
WEILS
	
TOIA4. #
SAMPLES
(K*6£R Of
POSITIVE
SAMPLES


(VtAR
MOHTHJ

MCL
*CL

t
NCI
mi
(DICAMBA)
MITCHELl
1984
7
\
0
0
1
0
0



1986
6
i
0
0
1
0
0



1989
1
7
0
0
7
0
0


MONOKA
1988
10
5
0
0
5
Q
0


ncwsoe
1988
7
3
0
0
3
0
0


MGK7C0t£KT
1908
9
3
0
0
3
0
0


(•JSCATIHE
1984
7
10
4
0
0
4
0
0



1988
4.5
10
0
0
10
0
0


O'BftlE#
1985
S
3
0
0
3
0
0



1986
4
6.7
1
0
0
7
0
0



1989
3
5
0
0
5
0
0


OSCEOU
1988
6
3
0
0
3
0
0


PAGE ¦
1986
6.8
2
0
0
2
0
0



1988
9
4
0
0
4
0
0


PALO ALtO
1983
5
1
0
0
1
0
0



1984
5
1
0
0
1
0
0


<
1989
1
5
a
0
5
0
0


PLYMOUTH
1988
6
11
9
0
0
9
0
0


POCAHONTAS
1989
1
4
0
0
4
0
0

7-IA-149
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA





¦ SAWPI
*ISW.T$ ,
RANC£ Of
PESTICIDE
COUNTY
BATE
, ,
TOTAL
WELLS
SAMPIEO
# Of
POSITIVE
WEUS
total •
SAMPLES
DUMBER Of
POSITIVE
SAWL££
COUCCtf-
mnoifs
-------
PESTICIDE 5AHPL1NG IN THE STATE OF IOWA




*ESULTS
SAKPII
RESULTS
RANGE Of
COUCER-
TftAHOM
pesticide
CflUtiTY
DATE
"TOTAL
UEUS
SAMPttt
# OF
POSITIVE
TOT At #
SAMPLES
JWHKft OP
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



VEU
ttWUS
	.SftKPLS. KESiftTS 	
RANGE or
«WC£»-
THATIOBS
tvs/l)
PESTiCIOE
COUMTY
DATE
TOTAL
WELLS
SAMPLED
» Of
POSITIVE
UELtS
TOTAL 0
SAMPLES
NUMBER Of
POSITIVE
SAMPLES
'

CYEAft
*Oti7K}

I
mx
*ei

I
HCL
<
HCL
~ COIELBRIN)
8REKE8
1986
6
2
0
0
2
0
0


SUE HA VISTA
1985
5
2
0
0
2
0
0



1986
4.5
6.7
4
0
0
8
0
0


CASS
1984
6,8
12
3
0
0
3
0
0



1986
6
1
0
0
1
0
0


CtOAR
1986
6
1
0
0
1
0
0


C*E*OKEE
1985
5
8
0
0
8
0
a



1986
4,5
6.7
3
0
0
7
0
0


CUT
1984
7
2
0
0
2
0
0



1985
3.5
3
0
0
3
0
0



1986
4
6.7
3
0
0
6
0
0


CUYTO#
1983
3,5
7
10
16
0
0
19
0
0



1984
5
6
6
0
0
6
0
0


Ct-INTOW
1984
8
1
0
a
1
0
0


OtlAWARE
1984
9
4
0
0
4
0
0



1985
3
1
0
0
1
0
0



1986
6
1
0
0
1
0
0


subuoue
1984
5
3
0
0
3
0
0

7-IA-152
-------
PESTICIDE SAMPLING IN THE STATE OF I QUA



.. _mi_IESiTS _
SM*>1
RESULTS
HAWSE OF
GCMCE.K*
mnons
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



, yen..
JESUITS. ,, ,

*E$«.TS
RANGE Of
PESTICIDE
COLMTY
0AT6
TOTAL
WELLS
SAMPLED
* OF
POSITIVE
WELLS
,,
TOTAL *
SAMPLES
OF
POSITIVE
SAMPLES
COMCEK-
TfiAnotrs
(UB/U


(YEAR
MOKIK}

l
<
«Cl

I
Ma
<
mi

~ (DIELDR1N)
UOOOBURY
1986
4
6
4
0
0
4
0
0

TOTAL DISCRETE
WELLS 0^ SAMPLES


67
0
0
132
0
0

~ ftuerwAtf
ADAIR
1988
6
6
0
0
6
0
0


ADAMS
1988
12
4
0
0
4
0
0


AUAWkKEE
1988
8
10
0
0
10
0
0


APPANOOSE
1988
9
5
0
0
5
0
0


AUDUBOtt
1988
6
3
0
0
3
0
0


BEItrON
1989
4
8
0
0
8
0
0


BtAClC KAWK
1989
1.2
13
0
0
13
0
0


BOONE
1988
5
5
0
0
5
0
0


BREMER
1988
8
9
0
0
9
0
0


BUCHANAN
1989
2.5
11
0
0
11
0
0


BUENA VISTA
1988
6
7
0
0
7
0
0


BUTLER
1988
5
7
0
0
7
0
0


CALHOUN
1988
6
4
0
0
4
0
0


CAR8EX.L
1989
5
7
0
0
7
0
0


CASS
1987
5
6,7
12
0
0
14
0
0



1988
7
5
0
0
5
0
0


CSOAH
1989
4
7
0
0
7
0
0


ccsao go*do
1988
8
7
0
0
7
0
0

7-IA-154
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA





. SftHPLE RESULTS
RANCE Of
COHC€«-
TSAt IONS
(ua/U
PESTlCiOe
COUHTK
DATE
	
TOTAL
VELW
SAMPLED
	
~ Of
«»nivE
WEILS
TOIAt *
SAMPLES
NUMBER OF
POSITIVE
SAMPLES


(TEAR
WKTK)

I
*a
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



Wit
R£$UIT$
SAMPL
HE5W.TS
*ANCE Of
CONCEN-
TRATTOtrS
(UB/U-
; pesticide
COUNTT
OATt
: -'WElt*
SAMPLED
KMirivf
WELLS
SAHPIES '
:-'ws'iTlve:
SAMPLES


tYEAR
HOKTK)

fc
HCi
MCL

i
na
UCl
~ CDINETHOATE)
HUFETTE
1988
4
8
0
0
8
0
0


ROYO
1988
8
7
0
0
7
a
0


FHANKLIN
1989
1
4
0
0
4
0
0


FS6H0NT
1987
3.5
6.7
12
0
0
12
0
0



1988
6
4
0
0
4
0
0


GRESK
1988
6
10
7
0
0
7
0
0



1988
10
5
0
0
5
0
0


EUTHiiiE
1988
9
5
0
0
5
0
0


HAMILTON
1988
7
5
0
0
5
0
0


HANCOCK
1985
5
6
0
0
6
0
0


HARDIS
1989
3
6
0
0
6
0
0


HARRISON
1988
6
5
0
0
t
5
0
0


HEN*r
1988
8
5
0
0
5
0
0


HOWARD
1989
1
6
0
0
6
0
0


HUtffiOLOt
1988
6
4
0
0
4
0
0


IDA
1988
4
4
0
0
4
0
Q


: IOWA
1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JACKSOK
1988
5
7
0
0
7
0
0


JASPER
1988
7
12
15
0
0
15
0
0

7-IA-156
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



«eu
RESULTS
S«®L
INSULT?
RANCE Of
caiCMH-
TKATlQtt
 (DINETHOATE)
JSMEItSOK
1989
6
4
0
0
4
0
0


JOWSO#
1988
9
11
11
0
0
11
0
0



1988
9
7
0
0
7
0
0


KEOKUK
1988
7
4
0
0
4
0
0


KOSSUTH
1988
7
10
10
0
0
10
0
0


LIE
1988
10.11
12
0
0
12
0
0


UtHM
1988
6
13
0
0
13
0
0


lASlSA
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
0
3
0
0


LTOH
1988
6.8
S
0
0
5
0
0


HMD SOU
1988
9
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


MAHASKA
1988
10
1
0
0
1
0
0



1989
L
6
0
0
6
0
0


HAS.JON
1988
10
1
0
0
1
0
0



1989
4
11
0
0
11
0
0


KARSHAIL
1988
7
6
0
0
6
0
0


#uls
1987
S
6.7
11
0
0
12
0
0



1988
5
6
4
0
0
4
0
0

7-IA-157
-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



VIEU
results
	awu
W5W.T3
RAKGE Of
CONCEP-
TS AT I 0«
(U8/U
PESTJC10E
eouKn1
DATE
TOTAL
WEILS
SAMPLED
# OF
POSITIVE
WEILS
TOTAL 0
SAMPLES
NUMBER OP
POSITIVE
SAMPLES


ttCAfi
MOHTK)

t
WX
«
mL

t
net
MCi.
P- CDJNETHOATE)
MITCHELL
1989
1
7
0
0
7
0
0


MOROM
1988
10
5
0
0
5
0
0


xmae
1988
7
2
0
0
2
0
0


KM!GOM£ftT
1987
5
6.7
9
0
0
9
0
0



1988
9
3
0
0
3
0
0


MUSCATINE
1988
4.5
10
0
0
10
0
0


O'BtlEH
1989
3
5
0
0
5
0
0


OSC£OU
1988
6
3
0
0
3
0
0


PAGE
1988
9
4
0
0
4
0
0


MUMUO
1989
1
5
0
0
5
0
0


fH-YKOUlM
1988
6
11
9
0
0
9
0
0


POCAHONTAS
1989
1
4
0
0
4
0
0


POLlC
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0


POTTAMATTAHJE
1987
5
6.7
15
0
0
21
0
0



1968
7
3
0
0
3
0
0



1989
1
24
0
0
24
0
0


POWESHIEK
1988
6
4
D
0
4
0
0


RiKGGOlD
1988
5
4
0
0
4
0
0

7-IA-158
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA
1


WELL
RESULTS
. s«*l£ *EmT3
RANGE Of
COMCCR-
T#ATtC*S
JUB/U
Pttrraoe	 .
COJtfTY
DATE
TOTAL
WELLS
SAMPLED
# Of
posmvt
WRIS
TOTAL #
SAMPLES
ttUMKA Of
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



mi
puus
sa*>l
E:*ESUtTS :' = '.
XANCE OF
CONCEN-
TRATIONS
 ELOSJH ALDEHYDE
DUBUQUE.
1984
5
1
0
0
1
0
0

TOTAL DISCRETE
WELLS OR SAMPLES


1
0
0
1
0
0

*¦ IXOCSULFA* J
WEWFR
1984
7
2
0
0
2
0
0



ms
1
1
0
0
1
0
0



1986
6
2
0
0
2
0
0


BUEKA VISTA
1985
5
2
0
0
2
0
0



1986
4.5
6,7
4
0
0
8
0
0


CASS
1984
6,8
12
3
0
0
3
0
0



1986
6
1
0
0
1
0
0


CS)AR
1986
6
1
0
0
1
0
0


CHEROKEE
1985
5
a
0
0
8
0
0



1986
4,5
6.7
3
0
0
7
0
0


CLAY
1984
7
2
0
0
2
0
0



1985
3.5
3
0
0
3
0
0



1986
4
6.7
3
0
0
6
0
0


CLlNTO*
1984
B
1
0
0
1
0
0


DELAWARE
1984
9
3
0
0
3
0
0

7-IA-160
-------
PESTICIDE SAMPLING IN THE STATE OF 10UA


_____
	-

JESUITS
	SAMPLE *ES«,TS
HAWSE OF
pesricifiE
COUKTV
DATE
TOTAL
WE LIS
SAMPLED
# or
POSITIVE
WEILS
TOTAL *
SAMPLES
mMPEA OF
POSITIVE
SA*PL£S
COIIC£ft~
T3A! iOMS
o
-------
PESTICIDE SAMPLING IN THE STATE Of IQUA



WELL RESULTS
... _ .SA»>L£ *ESUIT3
RANGE Of
COKCttf-
TRAtiotrs
(U8/U
P£SnCIfi€
CdUHTY
DATE
TOTAL
WELtS
SAHPLEO
$ Of
positive
WEILS
TOlAl #
SAMPLES
1 SUMBtR Of
! POSITIVE
SAHPUS




fc
net
MCL

fc
HCL
MCL
~ (ENDOSULFAH I)
WIKKESHiEK
1984
3
1
0
0
1
0
0



1985
1
6
2
0
0
3
0
0


VOGOBUSY
1985
5
9
0
0
9
0
0



1986
4
6
4
0
0
4
0
0

TOTAL DISCRETE
WELLS OR SAKPLES


58
9
0
104
0
0

~
EWDGSULFAN 11
BSEHER
1984
7
2
0
a
2
0
a



1985
1
1
0
0
1
0
0



1986
6
2
0
0
2
0
0


SU6*A VISTA ,
1985
5
2
0
0
2
0
0



1986
4,5
6.7
4
0
0
8
0
0


CASS
1984
6,B
12
3
0
0
3
0
0



1986
6
1
0
0
1
0
0


CHWW
1986
6
1
0
0
1
0
0


CHEROKEE
1985
5
8
0
0
8
0
0



1986
4,5
6.7
3
0
0
7
0
0


CU*
1984
7
2
0
0
2
0
0



1985
3.5
3
0
0
3
0
0



1986
4
6.7
3
0
0
6
0
0

7-IA-162
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



«Ll ftfSULT«
swu
rawus ,
RAHGt OF
eaucEN-
TRATtWS
-------
PESTICIDE SAMPLING IN THE STATE Of 10UA



l£LV
RESULTS;
. . 5AKPLE *E$«US . .
RANGE OF
COHCEK-
TBATIOVS
JEKDOSULfAN SULfATE
B*E*ES
1984
7
2
0
0
2
0
0



1985
1
1
0
0
1
0
0



1986
6
2
0
0
2
0
0


&UENA VISTA
1985
5
2
0
0
2
0
0



1986
4,5
6.7
4
0
0
8
0
0


CASS
1984
6,8
12
3
0
0
3
0
0

-

1986
6
1
0
0
1
0
0


CS>AR
1986
6
1
0
0
1
0
0


CHEROCE£
1985
5
8
0
0
8
0
D



1986
*.5
6.7
3
0
0
7
0
0


CLAY
1984
7
2
0
0
2
0
0

7-IA-164
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



1EU 8ESULTS
SAW I,
«SUITS
RANGE OF
CONCEH"
mno«s
fug/i;
ftiricioc
COUNTY
DATE
total
UEL1S
SAMPLED
* OF
posmvt
weus
TOTM *
SAMPLES
WJWEfi OF
POSITIVE
SAKPLES


<7£A«
HOKTH}

t
NCI
*
*Cl

I
NCI
<
*CL
P (ENDOSUIFAH SULFATE)
CLAY
1985
3.5
3
0
0
3
0
0



1986
&
6.7
3
0
0
6
0
0


Clinton
1984
8
1
0
0
1
0
0


0€UWAR€
1964
9
3
0
0
3
0
0



1965
3
1
0
0
1
0
0



1986
6
1
0
0
1
0
0


WBIWUE
1984
5
3
0
0
3
0
0



1986
6
1
0
0
1
0
0


.IDA
1986
6.7
2
0
0
2
0
0


tOUA
1984
5
9
1
0
0
2
0
0



1986
6
1
0
0
1
0
0


MTCISLt
1984
7
1
0
a
1
0
0



1986
6
1
0
0
1
0
0


MJSCATINE
1984
7
10
4
0
0
4
0
0


O'SSfEH
1985
5
3
0
0
3
0
0



1986
4
6.7
1
0
0
5
0
0


PA«
1986
6
1
0
0
1
0
0


PAlO AltO
1983
5
1
0
0
1
0
0



1984
5
1
0
0
1
0
0

7-IA-165
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL 8ES8.TS
SWWL
*esvu3 ,
RANGE OF
COMCEK*
TR AUDITS
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



	WEU
K«s.T$	
	e«B>L€ .BEJWU8
RANGE Of
COWSK-
Twnon
-------
PESTICIDE SAMPLING IN THE STATE OF I QUA



WELL RESULTS
_£MW>k£ RESULTS
HAHCE OF
CONCM-
mnons

pesticide
comrry
PATE
TOTAL
WELLS
SAMPLED
# Of
POSIT!VI
WEILS
TOTAL f
SAMPLES
*XB£R OF
POSITIVE
SAWL1S


(TEAR
MOHTK>

k
*a
<
1CL

t
MCI
<
MCL
(EtiDRIM)
PALO ALTO
 ENDRIN ALDEHYDE
ftftEMEft
1984
7
2
0
0
2
0
0



1985
1
1
0
0
1
0
0



1986
6
2
0
0
2
0
a


8UE*A VISTA
1985
5
2
0
0
2
0
0



1986
4,5
6.?
4
0
0
8
0
0


CASS
1984
6,8
12
3
0
0
3
0
0



1986
6
1
0
0
1
0
0


CEDAR
1986
6
1
0
0
1
0
0


CHEROKEE
1985
5
8
0
0
8
0
0

7-IA-168
-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



VELl #fSULT5
SA#PL£ 4ES&TS
WtKCE Of
CONCEtf-
IKATlOttS
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL RESULTS
SAI»L
RESULTS
RAWt OF
CON CM-
THAT tOttS
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



«U
RE$W.T«
SN*l
«WUS
*At*CE OF
concen-
trations
(US/U
PESTftiOE
count*
OATt
TOTAL
WELLS
SAMPLED
#0#
POS!T!Vf
WEILS
TOtAL f
SAMPLES
KUMB£« Of
POSITIVE
SAMPLES


tttM
MONTH)

t
net
<
«CL

i
NCI
MCL
~ (ETHOPROP)
. 88EHE8
1984
7
2
0
0
2
0
0



1985
1
1
0
0
1
0
0



1986
6
2
0
0
2
0
0



198S
a
9
0
0
9
0
0


SUCDAHAN
1989
2.5
11
0
0
11
0
0


eue«A vista
1985
5
2
0
0
2
0
0



1986
4,5
6.7
4
0
0
8
0
0



1988
6
7
0
0
7
0
0


suites
1988
5
7
0
0
7
0
0


CAmOUK
1988
6
4
0
0
4
0
0


CARFM-L
1989
3
7
0
0
7
0
0


ass
1984
6,8
12
3
0
0
3
0
0



1986
6.8
2
0
0
2
0
0



1987
1,5
6.7
13
0
0
13
0
0



1988
7
5
0
0
5
0
0


CEDAR
1986
6
1
0
0
1
0
0



1989
4
7
0
0
7
0
0


CEMO GOfiDO
1988
8
7
0
0
7
0
0


CHtftCKEE
1985
5
8
0
0
8
0
0

7-IA-171
-------
PESTICIDE SAKPLIHG IN THE STATE OF IOWA



mi
RESULTS
SAMP LI
RESULTS
RANGE OF
CON CEN-
TRA? 1QN5
(UB/U
: fesncit*
cam*
DATE


Of
ITJW1
ILS
TOTAL #
SAMPLES
NUMBER OF
POSITIVE
3AW>LES
TOTAfc:-
WELLS
sampled
"Yrr-m
IPOS
we




I
ACl
<
aci

I
net
<
KCL
~ (ETHOPROP)
CHEROKEE
1986
4.5
6.7
3
0
0
7
0
0



1989
3
4
0
0
4
0
0


CHICKASAW
1988
4
6
0
0
6
0
0


CtAtKE
1988
5
4
0
0
4
0
0


OAY
1984
7
2
0
0
2
0
0



1985
3.5
3
0
0
3
0
0



1986
4
6.7
3
0
0
6
0
0
¦


1988
8
6
0
0
6
0
0


CLAYTOK
1988
8
10
0
0
10
0
0


CLINTOK
1984
8
1
0
0
1
0
0



1988
12
8
0
0
8
0
0


CRAWFORD
1988
10
6
0
0
6
0
0


DALLAS
1988
10
2
0
0
2
0
0



1989
J
11
0
0
11
0
0


8AVIS
1988
5
4
0
0
4
0
0


CECATUS
1988
5
5
0
0
5
0
0


" C€ LA WARE
1984
9
4
0
0
4
0
0



1985
3
1
0
0
1
0
0



1986
6
1
0
0
1
0
0



1988
9
1
0
0
%
0
0

7-IA-172
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WE U
Rimrj:,	m
SMWUE RESULTS
MNGE Of
PESTJCiD€
CCUhtY
DATE
TOTAL
WELLS
SAMPLED
# OF
POSITIVE
WELLS
TOTAL *
SAMPLES
NUMBER Of
POSITIVE
SAMPLES
COMCttf-
TfiAriODS
tut/%}


NMTK)

t
Ma
«
MCI

t
MCI
<
*CIL

~ (ETHOPROP)
OELAUAM
1989
4
12
0
0
12
0
0


&£s wines
198S
8
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


MCKtUSON
1988
8	
6
0
0
6
0
0


tHJBUQUE
1984
5
3
0
0
3
0
0



1986
6
1
0
0
1
0
0



1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


' E*#CT	
1988
8
1
0
0
1
0
0



1989
1
2
0
0
2
0
0


FAlTETTr
1988
4
8
0
0
8
0
0


rum
1988
8
7
0
0
7
0
0


FRANKLIN
1989
1
4
0
0
4
0
0


fREWMT
1986
8
5
0
0
5
0
0



1987
3,5
6.7.8.9
15
0
0
15
0
0



1988
6
4
0
0
4
0
0


G*EE«£
1988
6
10
7
0
0
7
0
0


ORUNOY
1988
10
5
0
0
5
0
0


fiUTHRJE
1988
9
5
0
0
5
0
0


HAMILTON
1988
7
5
0
0
5
0
0

7-IA-17 3
-------
PESTICIDE SAMPLING IN TMS STATE OF IOWA



,
ipMTs...-;,
V,Ml,
stsuits

RANGE OF -
cancel-
:.T8*ncms
Jimn
nsricioc
COUUTt
OATE
TOfAl
:: mis
SAMPLED
« Of -'::: •
POSITIVE
WELLS
tOIAl f
sawh.es
MJW8ED OF
POSITIVE
SAHPLES



atAK
HOHTKJ

£
:*«.;•
*a

NCI

~ (ETHOPROP)
hakcock
1988
5
6
0
0
6
i
0
0


HARD IN
1989
3
6
0
0
6
!
0 ' 0


: HABK1SC* ..
1988
6
5
0
0
5
0
0


HEtfftY
1988
8
5
0 ! 0
i
5
3
0


" «»a86/
1989
1
6
0
0
6
0
0


;j«MCU!l
1988
6
4
0
0
4 I 0
0


IDA
1986
6.7
2
0
0
2 0
0



1988
4
4
0
0
4 j 0
|
0


tOUA
1984
5
9
1
0
0
I
2 0
i
i
0



1986
6
1
0
0
1
o ; o



1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0 | 0


•wcrww
1988
5
,
7
0
0
7
0
0
-

JASPER
1988
7
12
15
0
0
15
0
0


JEfFtSSOH
1989
6
4
0
0
4
0
0


JOHNSO#
1988
9
11
11
0
0
11
0
0


:* : :*I0N€6'
1988
9
?
0
0

0
0


; MOXW- .¦¦¦.;¦
1988
7
4
0 ; 0
4
o ! o


' KOWOT»
i
1988
7
10
10
0
0
10
o I 0
I

7-IA-174
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



, , gESULTS , , ,
¦
RSjSUyT^
RANCE OF
ccwreN-
TRAtltWS
fug/i)
HSTJCW
COUNT*
DATE
TOTAL I * Of
WEILS | POSJTiVt
sahpleo ] «us
TOTAL #
SAKPtES
WJM&R Of
POSITIVE
SAMPLES


tYEAft
MONTH)

I
WX
<
*CL

t
act
<
«CL
~ (ETHQPRQP)
LEE
1988
10.11
12
0
0
12
0
0


Lltttt
1988
6
13
0
0
13
0
0


LOUISA
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
0
3
0
0


IYOH
1988
6.8
5
0
0
5
0
0


HWiSOtt
1988
9
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


HA HA SKA
1988
10
1
0
0
1
0
0



1989
4
6
0
0
6
0
0


MARION
1988
10
1
0
0
1
0
0



1989
4
11
0
0
11
0
0


MARSXAll
1988
7
6
0
0
6
0
0


*uts
1986
6,8
3
0
0
3
0
0



1987
5
6,7.9
14
0
0
14
0
0



19B8
5
6
4
0
0
4
0
0


HITCWLt
1984
7
1
0
0
1
0
0



1986
6
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


NOMOHA
1988
10
5
0
0
5
0
0


HOWWt
1988
7
2
0
0
2
0
0

7-IA-17 5
-------
PESTICIDE SAMPLING IN THE STATE OF IQUA



well
9ESULTS
SAWPU
SESW.TS
HA IKE OF
«SC£M-
Tsmo*s


I
wx
<
MCI

I
fltt.
-------
PESTICIDE SAMPLING I* THE STATE OF IOWA



W£U
RESULTS
SHtPL
RESVtTS
*A#CE Of
: PESTIC1M
COUKTY
DATE
TOTAL
WELLS
SAHPtCT
#0f
POSITIVE
WEILS
totai »
SAMPLES
t»NB£R OF
PCStTIVE
SA*Pl££
CCKCtH-
rsfmoirt
(ub/D


(TEAR
**TH)

I
na
KCl

t
HCi
*
*CL

~ CETHOPROP)
POtTAUATTAH3£
1987
1,2,5
6.7
19
0
0
19
0
0



1988
7
3
0
0
3
0
0



1969
1
24
0
0
24
0
0


rowesaeic
1988
6
4
0
0
4
0
0


SINCGOLD
1988
5
4
0
0
4
0
0


SAC
1986
6
1
0
0
1
0
0



1938
6
1
0
0
1
0
0



1989
3
3
0
0
3
0
0


SCOTT
1989
6
10
0
0
10
0
0


paw
1984
6.8.9
4
0
0
4
0
0



1988
12
6
0
0
6
0
0


SIOUX
1984
3
6.9
3
0
0
3
0
0



1985
2
2
0
0
2
0
0



1986
7
10
0
0
10
0
0


STORY
1988
9
7
0
0
7
0
0


TAMA
1988
8
9
0
0
9
0
0


TAYlOU
1989
1
4
0
0
4
0
0


UNIO#
1989
1
3
0
0
3
0
0


VAH BUREN
1988
5
4
0
0
4
0
0


WAPELLO
1988
10,11
9
0
0
9
0
0

7-IA-177
-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



WELL
KSUtTS
	SAWPU
RCSW.TS ,
RAKCE Of
COiCtH'
TRATtOtfS
(U9/0
PESTICIDE

MTE
TOTAL
WELLS
SAMPtEU
* OP
POSITIVE
MEUS
TCtAt *
SAMPtfS
gome* of
POSITIVE
SAMPLES


(T£AR
WHTK)

I
KCi
<
KCL

I
MCI
<
KCL
~ (ETHOPROP)
WAWEJI 1968
9
17
0
0
17
0
0


WASHINGTON I 1988
\T
8
0
0
8
0
0


WAYNE
1988
9
11
3
0
0
3
0
0


WEBSTER
1988
5
8
0
0
8
0
0


WINNEBAGO
1988
5
S
0
0
5
0
0


W1IWESHIEK
1984
3
1
0
0
1
0
0



1985
1
6
2
0
0
3
0
0



1988
8
9
0
0
9
0
0


VDOOBURT
1985
5
9
0
0
9
0
0



1986
4
6
4
0
0
4
0
0



1988
4
9
0
0
9
0
0


«0«T«
1988
B
3
0
0
3
0
0


WlCKf
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WLLS OR SAMPLES


784
0
0
874
0
0

Ftaoros

ADAIR
1988
6
6
0
0
6
0
0


ADAMS
1988
12
4
0
0
4
0
0


ALLAMAKEE
1988
8
10
0
0
10
0
0


APPAMOOSE
1988
9
5
0
0
S
0
0


AUOUEW
1988
6
3
0
0
3
0
0

7-IA-178
-------
PESTICIDE SAMPLING IN TNE STATE OF IQUA

! 1
VEll
BttULtS
	, $m>u
RESULTS
RANGE OF
CONCCH*
TBATlCHfS
fU9/U
PEsneto*
COUKTY
1 ¦
DATE
TOTAL
WELLS
sampled
# OF
POSITIVE
WEILS
TOTAL #
SAMPLES
NUMBER OF
POSITIVE
SAMPLES


WWTJt)

t
HCl
<
KGL

t
«a
<
WCL
(FONOFOS)
SENTOH
1989
4
8
0
0
8
0
0


SLACK HAWK
1989
1.2
13
0
0
13
0
0


fittXE
1988
S
5
0
0
5
0
0


8REMER
1984
T
2
0
0
2
0
0



1985
1
1
0
0
2
0
0



1966
6
2
0
0
3
0
a



1988
8
9
0
0
9
0
0


iUCHAHAS
1989
2.5
11
0
0
11
0
0


6UEMA VISTA
1985
5
2
0
0
2
0
0



1988
6
7
0
0
7
0
0


BUTlEft
1988
5
7
0
0
7
0
0


CALHOUK
1988
6
4
0
0
4
0
0


CARROLL
1989
3
7
a
0
7
0
0


CASS
1984
6,8
12
3
0
0
4
0
0



1986
6
1
0
0
1
0
0



1988
7
5
0
0
5
0
0


CttAR
1986
6
1
0
0
1
0
0



1989
4
7
0
0
7
0
0


C£R80 G0«t>0
1988
8
7
0
0
7
0
0


CHEROKEE
1985
5
8
0
0
8
0
0

7-IA-179
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



mi
ftESULTS
SAKPl
MIS^T.S..	
RA#CE OF
CWCEK-
TSATlOttS
cug/t)
PtsrjCiOE

&AT€
TOTAL
we u.$
SAMPLED
* Of
POSITIVE
UELLS
torAi *
SAMPLES
JAMBER Of
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WEf.1
RESULTS
_ _ S«WL£ ttWLTS
«AKCE Of
COICO-
T*
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA




JFWtTS
Sam
RESULTS
MKCE Of
C0NC£K
TRATIOW
(MB/U
PEsnaw
tflunn
DAK
TOTAL
WLJ.5
SAMPLED
# OF
posmvt
UEUS
WAl #
SAMPLES
tfUHSEft OF
POSITIVE
9AWLES


at**
MONTH)

t
KCl
<
mi

i
act
<
XCL
(FONOFOS)
isiwr
1988
8
5
0
0
5
0
0


HOWARD
1989
1
6
0
0
6
0
0


MJM8019T
1988
6
4
0
0
4
0
0


IDA
1988
4
4
0
0
4
0
0


tOWA
1984
5
9
1
0
0
3
0
0



1986
6
1
0
0
2
0
0



1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JACtEO*
1988
5
7
0
0
7
0
0


JASPER
1988
7
12
15
0
0
15
0
0


JEFFERSOH
1989
6
4
0
0
4
0
0


JCWSO#
1988
9
11
11
0
0
11
0
0


JOWS
1988
9
7
0
0
7
0
0


KEOKUK
1988
7
4
0
0
4
0
0


(COSSUTH
1986
7
10
10
0
0
10
0
0


LEE
1988
10.11
12
0
0
12
0
0


LlHM
1988
6
13
0
0
13
0
0


LOUISA
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
0
3
0
0

7-IA-182
-------
PESTICIDE SAMPLING IN THE STATE OF IOUA
- •


VIELl
RESULTS
_ B«®Lf SE3U1IS
RAKCE OF
pwncioe
COUNTY
OATfc
10TAL
UEU.S
SAMPLED
# Of
positive:
wells
rojjn v
SAMPLES
WJHM:* OF
POSITIVE
SAMPLES
COMOEK-
TSAUOBS
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA





SWL
JESUITS
RAHCE Of
CONK#-
r*Ariore
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL
MFfULTS
SAXPU
KtSlRTJ
MHGE OF
WLSTicme
COJtiTIr
DATE
TOTAL
WELLS
SAMPLED
# of
POSITIVE
UE1LS
TOTAL #
SAMPLES
»JN8?R OF
POSITIVE
SAMPLES
CO#CEK-
TBMIOKS



am
**TK>

t
MCI
«
«CL

t
net
<
tfCL

(FONOFOS)
SiOUX
1984
3
6.9
3
0
0
3
0
0



1985
2
2
0
0
4
0
0



1988
7
10
0
0
10
0
0


STOUT
1988
9
7
0
0
7
0
0


TAMA
1988
8
9
0
0
9
0
0


TAYLOR
1989
1
4
0
0
4
0
0


UHtOK
1989
1
3
0
0
3
0
0


VAN BUR£H
1988
S
4
0
0
4
0
0


WAPEUO
1988
10.11
9
0
0
9
0
0


WARDEN
1988
9
17
0
0
17
0
0


UASTUHGtQH
1988
7
8
0
0
8
0
0


UATNF
1988
9
11
3
0
0
3
0
0


'WEBSTER
1988
5
8
0
0
8
0
0


tHMEBAfiO
1988
5
5
0
0
5
0
0


V3NNESK3EtC
1984
8
1
0
0
1
0
0



1985
1
2
0
0
3
0
0



1986
6
1
0
0
2
0
0



1988
B
9
0
0
9
0
0


V0003URT
1985
5
9
0
0
9
0
0



1988
4
9
0
0
9
0
0

7-IA-185
-------
PESTICIDE SAHPLIHG IN THE STATE Of IOWA



YEtl
8EWLTS
SAHPL
RESULTS
MNGE OF
CONCtH-
rsAiioire
ptsfict&e
CCtWTV
OAti
TOTAL
WELLS
SA*P1£0
M W
POSITIVE
WEILS
TOTAl »
SAMPLES
WJHBtft OF
POSITIVE
SAMPLES


CTtAfi
WOKTK)

t
<
MCI

i,
act
<
*CL
(FONOFOS)
WORTH
1988
8
3
0
0
3
0
0


MIGHT
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WEILS Oft SAMPLES


745
0
4
780
0
4
0.110-0.900
HEPIACKLOfi
SREMER
1984
7
2
0
0
2
0
0



1985
1
1
0
0
1
0
0



1986
6
2
0
0
2
0
0


SOEHA ViSTA
1985
5
2
0
0
2
0
0



1986
4,5
6.7
4
0
0
8
0
0


CASS
1984
6,8
12
3
0
0
3
0
0



1986
&
1
0
0
1
0
0


CH)AR
1986
6
1
0
0
1
0
0


CHEROKEE
1985
5
8
0
0
8
0
0



1986
4,5
6.7
3
0
0
7
0
0


CLAY
1984
7
2
0
0
2
0
0



1985
3.5
3
0
0
3
0
0



1986
4
6.7
3
0
0
6
0
0


CUHTOH
1984
8
1
0
0
1
0
0


?€l, AWARE
1984
9
4
0
0
4
0
0



1985
3
1
0
0
1
0
0

7-IA-186
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL
jes^ts
SAW Li
*Esyi^ , ,
fiAMGE Of
CWOEK-
TRAncms
 OF
POSITIVE
SAMPLES


<«A&

I
wx
..
MCI.

I
wu
<
mi
(HEPTACHLOR)
OELMMKE
1986
6
1
0
0
i
0
0


wkwoje
1984
5
3
0
0
3
0
0



1986
6
1
0
0
1
0
0


w
1986
6.?
2
0
0
2
0
0


IOWA
1984
5
9
1
0
0
2
0
0



1986
6
1
0
0
1
0
0


JMTCN&L
1984
7
1
0
0
1
0
0



1986
6
1
0
0
1
0
0


MUSCATINE
1984
?
10
4
0
0
4
0
0


O'MIEU
1985
5
3
0
0
3
0
0



1986
4
6.7
1
0
0
5
0
0


PAS?
1986
6
1
0
0
1
0
0


PALP AlTO
1983
5
1
0
0
1
0
0



1984
5
1
0
0
1
0
0


SAC
1986
6
1
0
0
1
0
0


SHEter
1984
6.8.9
4
0
0
4
0
0


SIOUX
1984
3
6.9
3
0
0
S
0
0



1985
Z
2
0
0
2
0
0


VINMESKiEK
1984
3
1
0
0
1
0
0

7-IA-187
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WSLI

SAH0PU
W3W.TS ,
*ARC£ OF
COUCtti-
TRATTOtfS
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA
1
• ¦ 	, •

, .\£\X
P«}.TS , ...
		 SftWHJ
E RESULTS
Mft& Of
WEsrtcii>c
COUNTY
0AT£
total
WELLS
SAMPLED
* OF
positive
URLS
TOTAl f
SAMPLES
W*B£ft Of
POSITIVE
SAMPLES
Oman-''
TftAM(*S
(U9/U


-------
PESTICIDE SAMPLING IN THE STATE Of IOUA



VEU
*ESULTS
s«*u
WSOU3 	
RAHGE OF
CONCM-
Twnoits
(U9/1)
pesticide
COJWY
Ml
TOTAL
WELLS
SAMPLED
* t)f
POSITIVE
WELLS
TOTAL *
SAMPLES
tfUMBtR Of
POSITIVE
SAMPLES


¦ KYSfiOXTALACKLOR
ADAMS
1988
12
4
a
0
4
0
0


SENT ON
1989
4
8
0
0
8
0
0


elack mx
1989
1.2
13
0
0
13
0
0


BUCHANAN
1989
2.5
11
0
0
11
0
0


CARROLL
1989
3
7
0
0
7
0
0


CESAR
1989
4
7
0
0
7
0
0


CJtMCKE*
1989
3
4
0
0
4
0
0


aixro#
1988
12
8
0
0
8
0
0


DALLAS
1988
ID
2
0
0
2
0
0



1989
3
11
0
0
11
0
0


DELAWARE
1989
4
12
0
0
12
0
0


DCS HOI«S
1989
5
6
0
0
6
0
0


DUBUQUE
1989
6
11
0
0
11
0
0


EHfCT
1989
1
2
0
0
2
0
0

7-IA-190
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELl RESULT*
SApPf.
HESVIJ!?
RAtfGE Of
pestjcjoe
COUKTY
BAT 6
TOTAL
WEILS
SAMPLED
* Of
POSITIVE
UEU.S
TOTAL #
SAMPLES
9UMBSI) Of
POSITIVE
SAMPLES
COKttti-
TBAnOKS
<«8/U


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL
issues
SAMPLE RESETS
ftAltCE OF
coactK-
TSAIlOfS
«mn)
pests cim
COWTT
PATE
TOTAL
WELLS
SAMPLED
# OP
positive
uaLS
TOTAL §
SAMPLES
KJMttfi OP
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOUA
. .


W-V
puiTS
SANPU
KESW.TS
RAKCE Of
awc£«-'
TBATlOtrS
(ug n>
PESTlCiOE
CCUHTf
oat*
total
WELLS
sabplki
* OF
POSITIVE
WELLS
TOTAL •
SAMPLES
UUMKR OF
POSITIVE
SAMPLES
'

«£A«
MOKTK)

I
NCI
«
*Cl

t
HO.
<<
MCL
(LINDANE)
CASS
1984
6,8
12
3
0
0
3
0
0



1986
6
1
0
0
1
0
0


«&**
1986
6
1
0
0
1
0
0


CflEWKEC
1985
5
8
0
0
8
0
0



1986
4,5
6.7
3
0
0
7
0
0


CtAT
1984
7
2
0
0
2
0
0



1985
3.5
3
0
0
3
0
0



1986
4
6.7
3
0
0
6
0
0


aiUTOK
1984
8
1
0
0
1
0
0


DELAWARE
1984
9
4
0
0
4
0
0



1985
3
1
0
0
1
0
0



1986
6
1
0
0
1
0
0


OU&UQUE
1964
5
3
0
0
3
0
0



1986
6
1
0
0
1
0
0


ID A
1986
6.7
2
0
0
2
0
0


IOWA
1984
5
9
1
0
0
2
0
0



1986
6
1
0
0
1
0
0


H5TCHELI
1984
7
1
a
0
1
0
0



1986
6
1
0
0
1
0
0

7-IA-193
-------
PESTICIDE SAMPLING IN THE STATE OF 10UA



WELL
RESULTS
SWS»L
*ES«ITS ,
*AttC£ Of
COMCCtt-
TKATtONS


t
fia
<
ttCL

t
XCl
<
' mi

(IINCAHE)
MUSCATINE
1984
7
10
4
0
0
4
Q
0


6'&8J£K
1985
5
3
0
0
3
0
0



1986
4
6.7
1
0
0
5
0
0


PAGE
1986
6
1
0
0
1
0
0


PALO ALTO
1983
5
1
0
0
1
0
0



1984
5
1
0
0
1
0
0


SAC
1986
6
1
0
0
1
0
0


SaeiB*
1984
6.8.9
4
0
0
4
0
0


SIOUX \
1984
3
6.9
3
0
0
3
0
0



1985
2
2
0
0
2
0
0


W1MIESHIEK
1984
3
1
0
0
1
0
0



1985
1
6
2
0
0
3
0
0


WOODBURY
1985
5
9
0
0
9
0
0



1986
4
6
4
0
0
4
0
0

TOTAL DISCRETE
. WELLS OR SAMPLES	


59
0
0
106
0
0

WU.MMON
ADAIR :
1988
6
6
0
0
6
0
0


ADAMS
1988
12
4
0
0
4
0
0


ALLAMAKEE
1988
8
10
0
0
10
0
0


APPANOOSE
1988
9
5
0
0
5
0
0

7-IA-194
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



HELL RESULTS
. SAWL
RESULTS
RAHCE OF
COWCEK-
TRATIOHS
AR
1989
4
7
0
0
7
0
0


CfRfiO GORDO
1988
8
7
0
0
7
0
0


CHEROKEE
1989
3
4
0
0
4
0
0


CHICKASAW
1988
4
6
0
0
6
0
0


Clarke
1988
5
4
0
0
4
0
0


OA*
1988
8
6
0
0
6
0
0


OAYTOK
1988
6
10
0
0
10
0
0


CtI«TOtt
1988
12
8
0
0
8
0
0

7-IA-195
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WEU RESULTS
S^BPU
RESULTS
RANCE Of
CONCEK-
rations
(ug/U
KSTJCIPE
CfiUKTt
DATE
TOTAL
WE LiS
SAUCED
if 
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



	 t*U KESUtT* ,
.... SWS'l
XESVtTS
ftANGE Of
COKCEK-
ntAnom
(UB/U
MLSTlCi&e
COUtfTr
i un
tOTAL 1 * Of
WELLS I POSITIVE
SAMPLED ] WEILS
TOtAl *
SAHPUS
WJNBCH OF
POSITIVE
SAMPLES


am
HOHJH)
| t
! MCt
•e
#a
'
I
MCI
¦<
wet
(KALATHION)
E*
1988
7
12
15
0
0
15
0
0


JEFFEKSO#
1989
6
4
0
0
4
0
0


JOHJISOH
1988
9
11
11
0
0
11
0
0


JOKES
1988
9
7
0
0
7
0
a


KEOKUK .
1988
7
4
0
0
4
0
0


KOSSUTH
1988
7
10
10
0
0
10
0
0

7-IA-19?
-------
PESTICIDE SAMPLING IN THE STATE OF (QUA



«EU RESULTS

HESS.TS , ,
MHCt. OF
CONCEK*
rsAiioits
-------
PESTICIDE SAMPLING IN THE STATE OF IQUA



VEll.
gf-SULTS
SAflE RESULTS
MWSE OF
ttSJCEH-
TSAtiom
Otg/lJ
pesticide
COUHTV
DATE
TOTAL
VEU.S
SAHPtEO
« Of
POSITIVE
WEILS
TOtAl »
SAMPLES
NUMBER OF
POSITIVE
SAMPLES


(TEA#
HOHTH)

I
m.
<
*Cl

t
MCI
<
*CL
CNAUTKION)
MUSCATINC
1988
4.5
10
0
0
10
0
0


0'BRISK
1989
3
5
0
0
5
0
0


osctou
1986
6
3
0
0
3
0
0



1988
9
4
0
0
4
0
0


PAIO ALTO
1989
1
5
0
0
5
0
0


HYUOUTH
1958
6
11
9
0
0
9
0
0


POCAHONTAS
1989
1
4
0
0
4
0
0


POLKT
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0


POTTAHATTAHIE
1987
5
6.7
15
0
0
21
0
0



1988
7
3
0
0
3
0
0



1989
1
24
0
0
24
0
0


POWESHIEK '
1988
6
4
0
0
4
0
0


*I#SGQU>
19B8
5
4
0
0
4
0
0


SAC
1988
6
1
0
0
1
0
0



1989
3
3
0
0
3
0
0


SCOTT
1989
6
10
0
0
10
0
0


MEUY
1988
12
6
0
0
6
0
0


SIOUX
1988
7
10
0
0
10
0
0

7-IA-199
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



HELL
JESUITS
S»WL
RESULTS
RANGE Of
C0HCEK-
TRATtOWS
CUB/U
Pisriciot
COUKT1
t>AT£
10TAL
WELLS
SAMPLED
* Of
POSITIVE
uetis
?OtM t
SAMPLES
*UH&£R OF
POSITIVE
SAMPLES


atar
HO#TH)

t
net
<
MCI

I
*U
<
KCL

(NAUTHION)
STOKY
1988
9
7
0
0
7
0
0


TAMA
1988
8
9
0
0
9
0
0


TAYLOR
1989
1
4
0
0
4
0
0


UNIQ*
1989
1
3
0
0
3
0
0


van SUHEH
1988
5
4
0
0
4
0
0


WAPEI.U)
1988
10.11
9
0
0
9
0
0


WARtCT
1988
9
1?
0
0
17
0
0


VASflTNGTO#
1988
7
8
0
0
8
0
0


WAYNE
1988
9
11
3
0
0
3
0
0


«mts*
1988
5
8
0
0
8
0
0


wjkhebsgo
1988
5
5
0
0
5
0
0


WJIWESH1EK
1988
B
9
0
0
9
0
0


W0008URT
1988
4
9
0
0
9
0
0


WORTH
1988
8
3
0
0
3
0
0


WRIGHT
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WEllS OR SAMPLES


704
0
0
752
0
0

NEtOLACHlOft
ADAIR
1988
6
6
0
0
6
0
0


' A0AMS
1988
12
4
0
0
4
0
0


AUAMKEE
1988
8
10
0
0
10
0
0


APPAHOOSE
1988
9
5
0
0
5
0
0

7-IA-200
-------
PESTICIDE SAMPLING I* THE STATE OF IOWA



,
iESU,TS
SifWU
J*ES«.T3
RANGE OF
CONtfN-
TRATIOKS
(UQ/t)
wsTicias
camr
OATi.
TOTAL
WE LIS
SAMPLED
« OF
positive
WEILS
TOTAL 9
SAMPLES
#U*Kft OF
POSITIVE
SA#PL££


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



mi
ESULTS
$m>L
SESWITS
*AWS€ OF
conctK-
Tjwnows
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WLt
RESULTS

RESULT?
HAKGE OF
CONCEM-
tsmioms
CUB/lJ
ptsTicioe
C<1WT*
OATfc
TOTAL
WELLS
SAMPLED
* OF
POSITIVE
yens
TOTAl »
SAMPLES
WJWggft OF
positive
SAKPUS




t
m.
<
«CL

t
NCI
<
MCL
(NETOLACHLOft)
OWWFOK>
1988
10
6
0
0
6
0
0


©ALIAS
1988
10
2
0
0
2
0
0



1989
3
11
0
0
11
0
0


MViS
1988
5
4
0
0
4
0
0


OECATUR.
1988
5
5
0
0
5
0
0


6€laua*£
1984
9
4
0
0
4
0
0



1985
3
1
0
0
1
0
0



1986
6
2
0
0
2
0
0



1988
9
1
0
0
1
0
D



1989
4
12
0
0
12
0
0


scs koines
1988
8
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


ihounso#
1988
8
6
0
1
6
0
1
0.090

ouauaue
1984
5
3
0
0
3
0
0



1986
6
1
0
0
1
0
0



1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


EWIET
1988
8
1
0
0
1
0
0



1989
1
2
0
0
2
0
0


FAVSTTE
1988
4
8
0
0
8
0
0

7-IA-203
-------
PESTICIDE SAMPLING IN THE STATE OF I QUA



WEU.
results
SAMPLE RESULTS
RANGE OF
CONCEN-
TRATIONS

1989
1
6
0
0
6
0
0


HUHWUfcT
1986
8
2
0
0
2
0
0



1988
6 .
4
0
0
4
a
0


IDA
1986
6.7.8
3
0
1
3
0
1
0.150
7-IA-204
-------
PESTICIDE SAMPLING IN THE STATE Of IOUA



.... miJKS&IS	_
SAW LI
RESULTS
JtAHGE OF
COHCtH-
TKAHOWS

couwrv,
0AT£
TOTAL
WELLS
SAMPLED
« OF
POSITIVE
UEU.&
totai #
SAMPLES
KUKftER Of
POSITIVE
SA»6>U£


am
NOHTH}

t
HCl.
<
*CL

I
KCi
MCI.
CHETOUCHLOH)
IDA
1988
4
4
0
0
4
0
0


IOWA
1984
4,5
6,7,8,9
11
29
0
0
47
0
0



1985
3,4,5
6,7,8
10.11
101
0
0
174
0
0



1966
6
2
0
0
2
0
0



1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JACKSO*
1988
5
r
0
1
7
0
1
0.040

JASPCT
1988
7
12
15
O
0
15
0
0


JEFFERSOK
1989
6
4
0
0
4
0
0


JOHNSON
1988
9
11
11
0
0
11
0
0


JONES
1988
9
7
0
0
7
0
0


Kioxwc
1988
7
4
0
0
4
0
0


KOiSUTK
1988
7
10
10
0
0
10
0
0


L£E
1988
10.11
12
0
0
12
0
0


LINK
1988
6
13
0
0
13
0
0


LOUISA
1988
4
6
0
• 1
6
0
1
1.370

LUCAS
1988
7
3
0
0
3
0
0


L*ON
1984
6
1
0 | 0
1
0
0

7-IA-205
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



mi
iesjLTi
SAKPLE ft&SULTS
RAKCE OF
CONCEK*
TRATlOtrS

P«T1C1I>€
eoumrr
DATE
TOTAL
WELLS
SMPi.EC
g af
POSITIVE
WEILS
TOTAL $
SAMPLES
ItgMBtft OF
| POSITIVE
SAMPLES




I
mx
<
WCL

I
NCL
• «
MCL
(METOLACHLOfi)
um
1985
7
5
0
0
5
0
0



1986
5
7.8
8
0
0
8
0
0



1988
6.8
5
0
1
5
0
1
0.310

WHSOK
1988
9
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


KAMA OCA
1988
ID
1
0
0
1
0
0



1989
4
6
0
0
6
0
0


KARION
1988
10
1
0
0
1
0
0



1989
4
11
0
0
11
0
0


Marshau,
1988
7
6
0
0
6
0
0


MI US
198S
8
1
0
0
1
0
0



1986
6.8
5
0
* 0
5
0
0



1987
5
6.7.9
14
0
0
14
0
0



1988
5
6
4
0
0
4
0
0


hitchell
1983
2,4,5
7,8,9
10.12
43
0
1
45
0
1
0.110


1984
7
1
0
0
1
0
0



1986
6
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


HOHOHA
1988
10
S
0
0
5
0
0

7-IA-2 06
-------
PESTICIDE SAMPLING IN THE STATE OF 10UA



WELL
KESULTS
SAKPU
RESW.TS
HAIWE Of
COHCEN-
TSftI JCMfS
CU9/U

CflUMTV
0ATE
TOTAL
WELLS
sAm.ee
* OF
POSITIVE
MEtLS
TOTAL #
SAMPLES
liUMKft OF
POSITIVE
SAMPLES


(TEAR
HOHTH}

t
wa.
K
HCL

I
#3.
<
ftCL
CMETOLACHLOR)
NOMKE
1988
7
3
0
0
3
0
0


MOttTGOHERf
1986
8
1
0
0
1
0
0



198?
5
6.7
9
0
0
9
0
0



1988
9
3
0
0
3
0
0


MUSCATINE
1984
7
10
5
0
0
5
0
0



1988
4.5
10
0
0
10
0
0


0'6S/£tf
1985
5
3
0
1
4
0
2
5.600-6.300


1986
4
6.7
1
0
1
7
0
7
1.200-8.700


1989
3
5
0
0
5
0
0


OSCEOLA
1985
10
1
0
0
1
0
0



1986
5
6.7.8
12
0
3
12
0
3
0.190-0.250


1988
6
3
0
0
3
0
0


PAGE
1986
6.8
2
0
0
2
0
0



1987
3
1
0
0
1
0
0



1988
9
4
0
0
4
0
0


PALO ALIO
1983
5
1
0
1
1
0
1
9.000


1984
5
1
0
1
1
0
1
22.000


1986
5
6.7.8
16
0
0
16
0
0



1989
1
5
0
0
S
0
0

7-IA-207
-------
PESTICIDE SAMPLING IK THE STATE OF IOWA
:: . ,


WELL
HESULtS
. . _S»»L£ HESUUS
M#C£ OF
PtSTICHK
couwrv
mi
TOTAL
WELLS
# OF
' POSITIVE
WEIL*
TOTAL f
SAHPUS
*UMB£R Of
P03I7IVE
SAMPLES
CONOCW-
TUAnous
'

«€A*
«o#m
-
I
*«.
<
MCL

I
*a
<
WCL

(HETOLACHLOft)
«.rHQUT«
19S8
6
11
9
0
0
9
0
0


POCAWCHtifAS
1986
7
2
0
0
2
0
0



1989
1
4
0
0
4
0
0


POLK
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
t
0
0


POT7AWA7TAHJE.
1985
8
2
0
0
2
0
0



1986
6.8
12
8
0
1
8
0
1
0.100


1987
1,2,5
6.7
19
0
1
19
0
1
0.640


1988
7
3
0
0
3
0
0



1989
1
24
0
1
24
0
, 1
0.250

wwewiac
1988
6
4
0
0
4
0
0


RINGGOLD
1988
5
4
0
0
4
0
0


SAC
1986
6
2
0
0
2
0
0



1988
6
1
0
0
1
0
0



1989
3
3
0
0
3
0
0


SCOTT
1989
6
10
0
0
10
0
0


SHtl&T
1984
6.8.9
5
0
0
5
0
0



1988
12
6
0
0
6
0
0


SIOUX
1984
3
6.9
3
0
2
3
0
2
0.320-0.800
7-IA-208
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA
i

,
WELL
3ESH.TS
SAWL
*ESULJS
RAKCE OF
COUCEtt-
TRAHOire
(ug/l)
hsticjos
COUKTV •
PATE
TOTAL
WELLS
SAMPLED
# OF
POSITIVE
weus
TOTAt t
SAMPLES
*UNB£R OF
KBtTIVE
swus


am
WKTH}

t
WW.
<
JKL

t
nu
<
MU
(METOLACHIOR)
SIOUX
198S
2
7
4
0
3
5
0
4
2.100-7.BOO


1986
7.8
2
0
0
2
0
0



1988
7
10
0
1
10
0
1
9.900

STORK
1988
9
7
0
0
7
0
0


TAXA
1984
4,5
6.7
3
0
0
5
0
0



1988
8
9
0
0
9
0
0


TAflOR
1989
1
4
0
0
4
0
0


us lew
1989
1
3
0
0
3
0
0


VAti 8UREH
1988
5
4
0
1
4
0
1
0.270

WMfUO
1988
10.11
9
0
1
9
0
1
0.040

UARftEM
1988
9
17
0
0
17
0
0


WASHINGTON
1988
7
8
0
1
8
0
1
0.150

WAYNE
1988
9
11
3
0
0
3
0
0


WEBSTER
1988
5
8
0
1
8
0
1
0.052

WINNEBAGO
1988
5
5
0
0
5
0
0


U1MMESH1E*
1984
8
1
0
0
1
0
0



1985
1
3
0
0
3
0
0



1986
6
2
0
0
2
0
0



1988
8
9
0
0
9
0
0

7-IA-209
-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



Wfr^,
RESULTS
S)AKPL
RESULTS
RAKCE Of
CON CM-
rBATlOHS
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



ME 1.1
RESULTS
SAXPL
.HESWLT} ,
wwe of
P«T5CI06
tauum
DATE
TOTAL
WELLS
$AMPL€0
* OF
POSITIVE
¦ WELLS
totai #
SAMPLES
CP
POSITIVE
SA*>L£S
coueiH-
TRA?lC*rS
(us/U


(TEAR
HOHTK)

*
HCl
<
xu

t
na
<
*a

CHETR1&UZ1H)
fiREMER
1988
8
9
0
0
9
0
0


8UW0WA*
1989
2.5
11
0
0
11
0
0


BUEMA VISTA
1985
5
2
0
1
2
Q
1
1.100


1986
4,5
6.7
4
0
2
9
0
5
0.900-3.700


1988
6
7
0
0
7
D
0


8UHE8
1988
5
7
0
1
7
0
1
0.080

CAL#OU#
1988
6
4
0
0
4
0
0


CAIWOLL
1989
3
7
D
0
7
0
0


CASS
1984
6,8
12
k
0
0
6
0
0



1986
6,8
3
0
0
3
0
0



1987
1.5
6.7.8
14
0
0
14
0
0



1988
7
5
0
0
5
0
0


C& AR
1986
6
1
0
0
1
0
0



1989
4
7
0
2
7
0
2
0.020-0.070

CERftO -GORDO
1988
8
7
0
0
7
0
0


CHEROKEE
1985
5
10
10
0
1
13
0
2
0.440-0.750


1986
4,5
6.7.8
12
0
1
14
0
1
0.120


1989
3
4
0
0
4
0
0


CHICKASAW
1988
4
6
0
0
6
0
0

7-IA-211
-------
PESTICIDE SAMPLING Id THE STATE Of IOWA



. . «UJKafc_T5_ 	
SAHPte RE8W.T3
ftANCE OF
COMCEW-
TKATtCWS
-------
PESTICIDE SAMPLING IN THE STATE Of IOWA



WELL
JESUITS
	SAMPU
JESUITS
AAKGE OF
CONCCK-
nunotes
(UB/U
WKTJCMH
COUNTY
; &AT€
TOTAL
WELLS
SAN PUD
* or
POSITIVE
wits
TOTAl #
SAMPUS
Of
POSITIVE
SAMPLES




t
na
<
*CL

t
»a
*KL
(NETRIBUZIN)
CELMJAK
1988
9
1
0
0
1
0
0



1989
4
12
0
1
12
0
1
0.060

05$ MDtNES
1988
8
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


DICJflHSOU
1988
8
6
0
0
6
0
0


OUSUQUE
1984
5
3
0
0
3
0
0



1986
6
1
0
0
1
0
0



1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


IHHEI
1988
8
1
0
0
1
0
0



1989
1
2
0
0
2
0
0


MlTETIf
1988
4
8
0
0
8
0
0


FtOYO
1983
2,4,5
7,8
10.12
39
0
2
40
0
2
0.090-0.150


1988
B
7
0
0
7
0
0


FRAMKUH
1989
1
4
0
0
4
0
0


FSENOMT
1985
8
2
0
0
2
0
0



1986
8
5
0
0
5
0
0



198?
3,5
6.7.8.9
15
0
0
15
0
0



1988
6
4
0
0
4
0
0

7-IA-213
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WEU
RESULTS
SA^ig. . _
«AKSE OF
COMCEH-
YRAtlOHS
{Ufl/U
PtSTtClOE
CQUWTt
OAU
total
WELLS
SAMPLED
* OF
POSiTiVE
wats
total »
SAMPLES
POSITIVE
SAMPLES
-

-------
PESTICIDE SAMPLING IN THE STATE OF IOWA






RAHC6 OP
awcta-
TMTIOKS
«ST1CI0€
couwrt
DATE
TOTAL
WELLS
SAMPLED
* 0 f
POSITIVE
WEILS
, „ ,
TOtAt #
SAMPLES
	
DUMBER Of
POSITIVE
SAHPLfS


-------
PESTICIDE SAMPLING IN THE STATE Of IQUA



VEU
BRUITS
	MPl
B..MWUS .
RAKCE OF
cauctti-
TfiATlOttS
(U9/i>

C&JHT*
DATE
TOTAL
VELIS
SAMPLED
* OF
POSITIVE
veus
TOtM #
5AMR.ES
*UMB£* Of
POSITIVE
SAWLfE


(YEA*
MONTH)

&
Ma
<
MCL

I | *
HO. | MCI.
(METRIBUZIN)
MR30I
1W»
4
11
0
0
11
0
0


MKKALt
1988
7
6
0
0
6
0
0


«!US
1985
B
1
0
0
1
0
0



1986
6.8
5
0
0
5
0
0



1987
5
6.7.9
14
0
0
14
0
0



1988
5
6
4
0
0
4
0
0


HlfCKELi,
1983
2,4,5
7,8,9
10.12
43
0
11
45
0
12
0.170-4.350


1986
7
1
0
0
1
0
0



1986
6
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


MOKOHA
1988
10
5
0
0
5
0
0


XCWSOE
1988
7
3
0
0
3
0
0



1986
8
1
0
0
, 1
0
0



1987
5
6.7
9
0
0
9
0
0



1988
9
3
0
0
3
0
0


MUSCATr«E
1984
7
10
5
0
0
5
0
0



1988
4.5
10
0
0
10
0
0


O'WIW
1985
5
3
0
0
4
0
0

7-IA-216
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA




SffMLTf , ,

**syu$	
RANG£ Of
COUCtti"
TMf IOKS
«TJCU*
COUMTY
PATE
TOTAL
WELLS
SAMPLED
* 01
«»STJVI
kfflLS
TOTAL f
SAMPLES
NUH8SS Of
wscrrvE
SAMPLES
- . -

-------
PESTICIDE SAMPLING IN THE STATE OF IOWA




putis	_

RESULTS
#A»CE Of
p«Tieift€
COUKTT
WTi
TOTAL
UEU.5
SAMPLES
# Of
posnsvt
!*U$
TOTAL #
SAMPLES
KMB&R OF
POSITIVE
SAMPLES
COHCfK-
muoKs


WW7K)

I
net
<
*CL

I
HCi
•<
ttCl

(METRIBUZIN)

1987
1,2,5
6.7
19
0
0
19
0
0



1988
7
3
0
0
3
0
0



1989
1
24
0
1
24
0
1
0.020

powfSfitetc
1988
6
4
0
0
4
0
0


81W00LD
1988
5
4
0
0
4
0
0


SAC
1986
6
2
0
0
2
0
0



1988
6
1
0
0
1
0
0



1989
3
3
0
0
3
0
0


SCOTT
1989
6
10
0
0
10
0
0


SHEur
1984
6.8.9
5
0
0
5
0
0



1988
12
6
0
0
6
0
0


IICU*
1984
3
6.9
3
0
1
3
0
1
0.290


1985
2
7
4
0
3
5
0
3
0.400-1.100


1986
7.8
2
0
0
2
0
0



1988
7
10
0
0
10
0
0


KTORy
1988
9
7
0
0
7
0
0


TAMA
1984
4,5
6.7
3
0
0
5
0
0



1988
8
9
0
0
9
0
0


TAttOfi
1989
1
4
0
0
4
0
0

7-IA-218
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



W6U
BFSLfLTS
SAW}-
RESULTS
RAHGE OF
CONCEK-
r«AtioNS
(ug/U
PfcSTICi&E
COUKTY
date
TOTAL
WELLS
SAMPLED
- *o r
POSITIVE
WEILS
toul *
SAMPLES
WMBtR Of
POSITIVE
SAMPLES


CKAR
•SOUTH)

t
act
<
Wtl

I
KCL
- <
*CL
(HETRIBUZIN)
WIM
1989
1
3
0
0
3
0
0


VAH 6UREK
1988
5
4
0
0
4
0
0


UAPELU)
1988
10.11
9
0
0
9
0
0


WAttftEK
1988
9
17
0
0
17
0
0


WASHINGTON
1988
7
8
0
0
8
0
0


WAYHf
1988
9
11
3
0
0
3
0
0


WEBSTER
1988
5
8
0
1
8
0
1
0.044

WlkMEBAGO
1986
5
5
0
Q
5
0
0


WIHNESK1EX
1984
8
1
0
0
1
0
0



198S
1
3
0
0
3
0
0



1986
6
2
0
0
2
0
0



1988
8
9
0
0
9
0
0


VOCOBURY
1985
5
10
10
0
0
10
0
0



1986
4
6,7.8
6
0
0
6
0
0



1988
4
9
0
0
9
0
0


WORTH
1988
fi
3
0
0
3
0
0


WRIGHT
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WELLS OR SAMPLES


913
0
27
1321
0
57
0.020-8.100
*v Jt£TKTt£NE' CTLOfl JD£
CASS
1986
6
1
0
0
1
0
0

7-IA-219
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



, WEH
RESULTS 	
SAMPLE JESUITS
RANGE Of
cancctr-
TSAT10NS
L£S


am
MONTH}

t
MCI
«CL

I
na
mi
~ (METHYLENE CHLORIDE)
CUNTOK
1984
8
1
0
0
1
0
D

TOTAL DISCRETE
WILLS OR SAMPLES


2
0
0
2
0
0

~ J>ARAm<*,ETH*l
ADAIR
1988
6
6
0
0
6
0
0


ADAMS
1988
12
4
0
0
4
0
0


ALUU
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



.. VE.U «E«8.T$
SAHPL
*£SUU3
RAKCE. Of
COlCtk*-
r**T5o«
(ua/U
pesriciM
ClXWTY
OATfc
total
ME LIS
SAMPLED
0 Of
POSITIVE
WELLS
TOTAL f
SAMPLES
MWKft OF
POSITIVE
SAWLEK


{YEAR
MONTH}

fc
MCI
<
~fcL

t
MCi
. , -c ¦¦¦ ¦
KCL
~ (PARATMION,ETHYL)
CHEROKEE
1989
3
A
0
0
4
0
0


CHICKASAW
1988
4
6
0
0
6
0
0


CLARICE
1988
5
4
0
0
4
0
0


cuy
1988
e
6
0
0
6
0
0


ami*
1988
8
10
0
0
10
0
0


CllNTOtt
1988
12
8
0
0
8
0
0


«AWfOM>
1988
10
6
0
0
6
0
0


DALLAS
1988
10
2
0
0
2
0
0



1989
3
11
0
0
11
0
0


DAVIS
1988
5
4
0
0
U
0
0


DECATUR
1988
5
5
0
0
5
0
0


D£ (.AWARE
1988
9
1
0
0
1
0
0



1989
4
12
0
0
12
0
0


DCS MOIMES
1988
8
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


OSCKINSOK
1988
8
6
0
0
6
0
0


OUBUQUE
1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


ew«T
1988
8
1
0
0
1
0
0



1989
1
2
0
0
2
0
0

7-IA-221
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL
ifsults
S**>L1
RESW.TS
RANGE OF
CONCEN-
ntAMOKS
ris/U
PESTlCiOt
COutfnr
DATE
TOTAL
WELLS
SAMPLES
* OF
POSITIVE
UEtLS
TOTM #
SAMPLES
NUMBER Of
POSITIVE
SAMPLES


ttEAR
«W»TK)

t
MCt
<
mi

t
MCI.
<
MCL
~ (PARATHIOH,ETHYL)
FA1ETTI
1988
4
8
0
0
8
0
0


flOYO
1988
8
7
0
0
7
0
0


FRANIO.I#
1989
1
4
0
0
4
0
0


FREMONT
1987
3,5
6.7
12
0
0
12
0
0



1988
6
4
0
0
4
0
0


(SEE HE
1988
6
10
7
0
0
7
0
0


ana®*
1988
10
5
0
0
5
0
0


-GUTMUE
1988
9
5
0
0
5
0
0


HAMILTC#
1988
7
5
0
0
S
0
0


HANCOCK
1988
5
6
0
0
6
0
0


KARDIH
1989
3
6
0
0
6
0
0


KAMI SOW
1988
6
5
0
0
5
0
0


KEwtr
1988
8
5
0
0
5
0
0


HOWARD
1989
1
6
0
0
6
0
0


SUtfflOlCT
1988
6
4
0
0
4
0
0


IDA
1988
4
4
0
0
4
0
0


IOWA
1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JACKSO#
1988
5
7
0
0
7
0
0


JASPE*
1988
7
12
15
0
0
15
0
0

7-IA-222
-------
PESTICIDE SAMPLING IN THE STATE OF 10UA



WEU
JESUITS
SWPL
*ESUUS
RANGE OF
CONCt#-
TSAT1CWS
(U9/U
P£STJCH>E
COUtfTY
DATE
TOTAL
WELLS
SAMPLED
# Of
POSITIVE
VEILS
TOfM #
SAMPLES
HUM8ER OF
POSITIVE
SAWLES


tYEAft
WOKTH}

I
net
KCL

t
na
<
«CI
~ (PARATHION,ETHYL)
JEFFEfiSOK
1089
6
4
0
0
4
0
0


JOHNSDK
1988
9
11
11
0
0
11
0
0


JOKES
1988
9
7
0
0
7
0
0


KEOKUK
1988
7
4
0
0
4
0
0


KOSSUTK
1988
7
10
10
0
0
10
0
0


L£E
1988
10.11
12
0
0
12
0
0


Liiai
1988
6
13
0
0
13
0
0


LOUISA
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
0
3
0
0


LTC*
1988
6.8
5
0
0
5
0
0


MADISON
1988
9
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


MAHASKA
1988
10
1
0
0
1
0
0



1989
4
6
0
0
6
0
0


HARlOU
1988
10
1
0
0
1
0
0



1989
4
11
0
0
11
0
0


MARSHALL
1988
7
6
0
0
6
0
0


KILLS
1987
5
6.7
11
0
0
12
0
0



1988
5
6
4
0
0
4
0
0

7-IA-223
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



UELl Wftars
,mi..8WP.U
RESULTS
RANGE Of
COUtt#-
mno*s
pfcsTitiae
caum
MTfc
TOTAL
WE LIS
SAMPtft
# OF
POSITIVE
uetts
WAt #
SAMPLES
HUH36R OF
POSITIVE
$AWL£S


(TEAR
HQKTH)

t
*Ci
*
MCL

fc
HCl
<
MCL
~ (PARATHION,ETHYL)
KITCUELi -
1989
1
7
0
0
7
0
0


M3NOKA
1988
10
5
0
0
5
0
0


.
1988
7
2
0
0
2
0
0


MOttrcOMCDY
1987
5
6.7
9
0
0
9
0
0



1988
9
3
0
0
3
0
0


MUSCAT tNE
1988
4.5
10
0
0
10
0
0


Q'WIEtt
1989
3
5
0
0
5
0
0


<3S«OU
1988
6
3
0
0
3
0
0


PA Gt
1988
9
4
0
0
4
0
0


PALO ALTO
1989
1
5
0
0
5
0
0


M.YWUT*
1988
6
11
9
0
0
9
0
0

.
POCAHONTAS
1989
1
4
0
0
4
0
0


POUC
19B8
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0


POTTAWATTAHJE
1987
5
6.7
15
0
0
21
0
0



1988
7
3
0
0
3
0
0



1989
1
24
0
0
24
0
0


powesate*
1988
6
4
0
0
4
0
0


RtHGQOLO
1988
5
4
0
0
4
0
0

7-IA-224
-------
PESTICIDE SAMPLING ID THE STATE OF IOWA





, , SAHPU
•t^SVlT?,
RAKGE OF
CONCCM-
Ts*no*s


I
mi
MCL

I
MCI
<
MCL
~ (PAMTHJOMTNU)
SAC
1988
6
1
0
0
1
0
0



1989
3
3
0
0
3
0
0


SCOTT
1989
6
10
0
0
10
0
0


SMEL6T
1988
12
6
0
0
6
0
0


SIOUX
1988
7
10
0
0
10
0
0


STOP IT
1988
9
7
0
0
7
0
0


rmk
1988
8
9
0
0
9
0
0


TATLOS
1989
1
4
0
0
4
0
0


UMIQM
1989
1
3
0
0
3
0
0


VAM BUREM
1988
5
4
0
0
4
0
0


WAPELLO
1988
10.11
9
0
0
9
0
0


WAR8E#
1988
9
17
0
0
17
0
0


WASHfWTOK
1988
7
8
0
0
8
0
0


VArwe
1988
9
11
3
0
0
3
0
0


WEBSTER
1988
5
8
0
0
8
0
0


WIKHE6AS0
1988
5
5
0
0
5
0
0


WINNESHIEK
1988
8
9
0
0
9
0
0


WOOOBUfiY
1988
i.
9
0
0
9
0
0


WORTH
1988
8
3
0
0
3
0
0


WIGHT
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WELLS OR SAMPLES


704
0
0
752
0
0

7-IA-225
-------
PESTICIDE SAMPLING IK THE STATE OF IOWA



WELl RESULTS
. .. SAMPLE JESUITS ....
«AW5E Of
CONtttf-
TSMlOlfS
etsncsw
eowrt
DAT£
TOTAL
WELLS
SAMPLED
* Of
POSITIVE
WELLS
TOtAl *
SAMPLES
WJMBtft OF
POSITIVE
SAMPLES
-

 PEKDfKETKAUK
ADAIR



ADAMS
1988
12
4
0
0
4
0
0



1988
8
10
0
0
10
0
0


APPANOOSE
1988
9
5
0
0
5
D
0


AUDUBOM
1988
6
3
0
0
3
0
0


KtfTOX
1989
4
8
0
1
8
0
1
0.190

#LAC(C HAWT
1989
1.2
13
0
0
13
0
0


800HE
1988
5
5
0
0
5
0
0


BREMER
1984
7
2
0
0
2
0
0



198S
1
1
0
0
1
0
0



1986
6
2
0
0
2
0
0



1988
8
9
0
0
9
0
0


BUCKAJiAW
1989
2.5
11
0
0
11
0
0


6LIEKA VISTA
1985
5
2
0
0
2
0
0

7-IA-226
-------
PESTICIDE SAMPLING IN THE STATE OF IOIM


-

KWT* „,
	 SA»»UE ttSHLTS
RANGE OF
j>esncioe
contrr
Datc
, ,
TOTAL
VEUS
SAH W.ED
* Of
fOSITIVE
WELLS
TOTAl §
SAMPtES
NUMBER Of
POSITIVE
SAMPLES
CONCEN-
TRATIONS



(TEAR
HMfTHJ

it
KCi
«
*CL

I
na
X
*Rl

*¦ 
HUEMA VI ETA
1988
6
7
0
0
7
0
0


fiUTLES
1988
5
7
0
0
7
0
0


CALtiOUK
1988
6
4
0
0
4
0
0


CAWN5U
1989
3
7
0
0
7
0
0


CASS
1984
6,8
12
3
0
0
3
0
0



1986
6.8
2
0
0
2
0
0



1987
1.5
6,7
13
0
0
15
0
0



1988
7
5
0
0
5
0
0


CEDAR
1986
6
1
0
0
1
0
0



1989
4
7
0
0
7
0
0


CERRO GOROO
1988
8
7
0
0
7
0
0


CHEROKEE
1985
5
8
0
0
8
0
0



1989
3
4
0
0
4
0
0


CHICKASAW
1988
4
6
0
0
6
0
0


CUftfE
1988
5
4
0
0
4
0
0


CIA*
19B4
7
2
0
0
2
0
0



1985
3.5
3
0
0
3
0
0



1986
6
1
0
0
1
0
0



1988
8
6
0
0
6
0
0


CtATTOK
1988
8
10
0
0
10
0
0

7-IA-227
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



U-Ll 8ESH.TS
	
SESVITS . ..
RANCE Of
CCWCEN-
mnoKs
(UBft)
HsriciM
camt -
DATE
TOTAL
VEL1S
SAMPLES
* <*
fOSJTJVE
WELLS
totfl #
SAKPiES
wxet* Of
POSITIVE
SAMPLES


(YEAR
MOUTH)

fc
HCi
<
*Cl

1 '
NCI
<
KCL
~ (PENDIMETHALIN)
CL1NTOR
1984
8
1
0
0
1
0
0



1988
12
8
0
0
8
0
0


mWFORD
1988
10
6
0
0
6
0
0


MtLkS
1988
10
2
0
0
2
0
0



1989
3
11
0
2
11
0
2
0.020-0.060

fiAVSS
1988
5
4
0
0
4
0
0


DECATUR
1988
5
5
0
0
5
0
0


DELAWARE
1984
9
4
0
15
4
0
0



1985
3
1
0
0
1
0
0



1986
6
1
0
0
1
0
0



1988
9
1
0
0
1
0
0



1989
4
12
0
1
12
0
1
0.900

t>€S «QtN£$
1988
8
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


Diocmsott
1988
8
6
0
0
6
0
0


dusuque
1984
5
3
0
0
3
0
0



1986
6
1
0
0
1
0
0



1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


EMMET
1988
8
1
0
0
1
0
0

7-IA-228
-------
PESTICIDE SAMPLING (N THE STATE OF IOWA



wai
itSULJ* 	
,, „ SAWU
RESULTS
SAKGE Of
COMCtK-
TRATIQKS
cusm
PESTICIDE
COUtiTY
DATE
total
WELLS
SAMPLED
* Of
POSITIVE
WELLS
total *
SAMPLES
MJM8£f) 6f
POSITIVE
SAMPLES




-tf
«
m

fc
WCL
<
ttCL

~ (PENOINETHALIN)
EWET
1989
1
2
0
0
2
0
0


FAYETTE
1988
4
8
0
0
8
0
0


a««>
1988
8
7
0
0
7
0
0


FRAMKUtt
1989
1
4
0
0
4
0
0


FsenoMT
1987
3,5
6.7.8.9
15
0
0
15
0
0



1988
6
4
0
0
4
0
0


GSEEKt
1988
6
10
7
0
0
7
0
0



1988
10
5
0
0
5
0
0


GJTHR1E
1988
9
5
0
0
5
0
0


HAMILTON
1988
7
5
0
0
S
0
0


HANCOCK
1988
5
6
0
0
6
0
0


HARDTN
1989
3
6
0
0
6
0
0


KAMI SON
1988
6
6
0
0
6
0
0


HEfcRY
1988
8
5
0
0
5
0
0


HOWARD
1989
1
6
0
0
6
0
0


HU«OU>T
1988
6
4
0
0
4
0
0


10 A
1988
4
4
0
0
4
0
0


IOWA
1964
S
9
1
0
0
2
0
0



1986
6
1
0
.
0
1
0
0

7-IA-229
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



	.mi.MRSJf	
. 6M»L
*E3UUS
RANCE Of
WNCM-
twio«
CU8/U
PEsritt&e
CCWftir
DATS.
total
WELLS
SAMPLES
# OF
POSITIVE
WELLS
WM, f
SAMPLES
KjMB£R OP
POSITIVE
SAMPLES


(YEAft
WQttTH}

I
xa
<
HCL

I
KCl
«
«a
~ (PENOIMETKALIN)
IOWA
1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JACfcSO*
1988
5
7
0
0
7
0
0


JASPER
1988
7
12
15
0
0
15
0
0


JEFfEfiSOK
1989
6
4
0
0
4
0
0


JOHMSOtt
1988
9
11
11
0
0
11
0
0


J0N8S
1988
9
7
0
0
7
0
0


JCEOR*
1988
7
4
0
0
4
0
0


ttOSSUTK
1988
7
10
10
0
0
10
0
0


UE
1988
10.11
12
0
0
12
0
0


L1KM
1988
6
13
0
0
13
0
0


LOUISA
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
0
3
0
0


L*OH
1988
6.8
5
0
0
5
0
0


KAOISOH
1988
9
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


MAHASKA
1988
10
1
0
0
1
0
0



1989
4
6
0
0
6
0
0


fttlUOW
1988
10
1
0
0
1
0
0

7-IA-230
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL
Re«*r$	
. .. *emTs
RANGE Of
CONCCN-
TRAHPNS
(Ufl/U
PttTlCiM
COJNTY
WTt
tOTAL
WELL J
SAHPtH)
* Of
«>SITlVt
weus
TOTAL #
SAMPUS
NUMBER OF
POSITIVE
SAMPLES


«EAf>
MONTH)

fc
MCI
<
MCL

I
MCI
<
- MCL
~ (PENDIMETHAL1N)
MARIOK
1989
4
11
0
1
11
0
1
0.660

MARSHALL
1988
7
6
0
0
6
0
0


MILLS
1986
8
1
0
0
1
0
0



1987
5
6.7.9
14
0
0
15
0
0



1988
5
6
4
0
0
4
0
0


WTCItfLl
1986
7
1
0
0
1
0
0



1986
6
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


«0NO«A 1988
110
5
0
0
5
0
0


MONROE
1988
7
3
0
0
3
0
0


MONTGOMERY
1986
8
1
0
0
1
0
0



1987
5
6.7
9
0
0
9
0
0



1988
9
3
0
0
3
0
0


MUSCATINE
1984
7
10
4
0
0
4
0
0



1988
4.5
10
0
0
10
0
0


o'&aitK
1985
5
3
0
0
3
0
0



1989
3
5
0
1
5
0
1
0.040

ostsou
1988
6
3
0
0
3
0
0


PAG£
1986
6
1
0
0
1
0
0

7-IA-231
-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



, WELL
RESULTS

#MGE OF
COMCEli-
T8AI10US


fc
NCt
<
net

fc
NCI
::
•TCI
~ (PEND1NETHAL1N3
PAGE
1987
3
1
0
0
1
0
0



1988
9
4
0
0
4
0
0


PALO ALTO
1983
5
1
0
0
1
0
0



1984
5
1
0
0
1
0
0



1989
1
5
0
0
5
0
0


PLYMOUTH
1988
6
11
9
0
0
9
0
0


POCAKOHTAS
1989
1
4
0
0
4
0
0


POLK
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0


POTTAUATTWIE
1986
8
12
2
0
0
3
0
0



1987
1,2,5
6.7
19
0
0
25
0
0



1988
7
3
0
0
3
0
0



1989
1
24
0
0
24
0
0


POWESHIEK
1988
6
4
0
0
4
0
0


RINGGOLD
1988
5
4
0
0
4
0
0


SAC
1986
6
1
0
0
1
0
0



1988
6
1
0
0
1
0
0



1989
3
3
0
1
3
0
1
0.030

:: .SCOTT
1989
6
10
0
0
10
0
0

7-IA-232
-------
PESTICIDE SAMPLING IN THE STATE OF IQUA
\


WEli
Jtmts
SAKPLJ
RESUUS
HAKCE OF
CONCtN-
TSATJtWS
cug rti
pesticide
COUNTY
DAU
10TAL
UEUS
SAMPtCO
* t*
POSITIVE
WEILS
WTAl #
SAMPLES
BUWEft OF
POSITIVE
SAHPUES
¦

-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL
RESULTS
6AWU
RESULTS
RANCE QF
CCNCCK-
Twnourt
PESTICIDE
ECUKTY
PATE
total
WELLS
SAMPtED
* OF
POSITIVE
WELLS
TOTAL *
SAMPLES
SOWER Of
POSITIVE
SAMPLES


(YEAft
MONTH)

t,
MO.
<
MCL

X
Ma
<
MCL
~ (PEMD1METHAL1M)
MOOOBURY
1985
5
9
0
0
9
0
0



1988
4
9
0
0
9
0
0


vat,™
1988
8
3
0
0
3
0
0


WRIGHT
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WELLSOR SAMPLES,, n


776
0
12
847
0
12
0.020-0.900
*¦ PHORAir
AC A 3 D
1988
6
6
0
0
6
0
0


ADAMS
1988
12
4
0
0
4
0
0


ALLAMAKEE
1988
8
10
0
0
10
0
0


APPANOOSE
1988
9
5
0
0
5
0
0


AU0U3OH
1988
6
3
0
0
3
0
0


a£«TON
1989
4
8
0
0
8
0
0


BtACK HAWK
1989
1.2
13
0
0
13
0
0


WWl
1988
S
5
0
0
5
0
0


BREMEfi
1984
7
2
0
0
2
0
0



1985
1
1
0
0
2
0
0



1986
6
2
0
0
2
0
0



1988
8
9
0
0
9
0
0


SUCHAMAM
1989
2.5
11
0
0
11
0
0


fiUENA VISTA '
1985
5
2
0
0
2
0
0



1986
4,5
6.7
4
0
0
8
0
0

7-IA-234
-------
PESTICIDE SAMflING IN THE STATE OF IOWA
: . 	


,, *I-V
JESUITS


KAKGE OF
CWCEK-
mnore
pesticioe
COUKTY
OATi
TOTAL
WELLS
SAMPLCC
# Of
POSITIVE
WELLS
, ,
TOTAL #
SAMPLES
iWHBEft Of
POSITIVE
SAMPL£S


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



	WEli.JlE3S.Ti_	
smu
*ES«.T?
*AW3E Of
COKCtK-
TfcAtlORS
(UB/U
PtSTJClDf
COL*
-------
PESTICIDE SAMPLING IN THE STATE OF 10UA



N?U
$
£
S&fcu
SESUIT3
ftAKCC Of
COJICCH-
TRAflQirS
MO/l)
PtSTieiSE
COHfTr
DATE
TOTAL
WELLS
SAHPLEO
§ttf
POSITIVE
weus
TOTAl 9
SAMPLES
MUH8ER Of
POSITIVE
SAMPLES




t I *
HU I XU

I
Ml
<
*CL
~ (PHOMTE)
CTWET
1968
S
1
0
0
1
0
0



1989
1
2
0
0
2
0
0


FAYETTE
1986
4
8
0
0
8
0
0


aow
1988
8
7
0
0
7
0
0


F8ANICUM
1989
1
4
0
0
4
0
0


fKEMQNT
1985
8
2
0
0
2
0
0



1986
8
5
0
0
5
0
0



1987
3,5
6.7.8.9
15
0
0
15
0
0



1988
6
4
0
0
4
0
0


«8EE*£
1988
6
10
7
0
0
7
0
0


mmv
1988
10
5
0
0
5
0
0


OJTKRIE
1988
9
5
0
0
1
0
0


HAMILTON
1988
7
5
0
0
5
0
0


HANCOCK
1988
5
6
0
0
6
0
0


HAROtW
1989
3
6
0
0
6
0
0


HARftlSON
1988
6
5
0
0
5
0
0


Htier
1988
8
5
0
0
5
0
0


HOWARD
1989
1
6
0
0
6
0
0


KUHBOtOT
1988
6
4
0
0
4
0
0


IDA
1986
6.7
2
0
0
2
0
0

7-IA-237
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



	veil..
HRS.T6
, SWM
seswjs
RAKCE OF
amc£H-
TRAfIO*S
fUB/ll
HLSTIC106
couwr*
PAU
TOTAL
KLIS
SAMPLED
* &
fosmvE
WELLS
tout #
SAMPL1S
OF
POSITIVE
SAMPLES


(TEAR
WKTK}

fc
WX
•<
IE L

I
MCI
*
#CL
~ (PHQRATE)
IDA
1988
4
4
0
0
4
0
0


IOUA
1984
5
9
1
0
0
2
0
0



1986
6
1
0
0
1
0
0



1988
9
1
0
0
1
0
0



1989
5
6
0
0
t>
0
0


JACKSON
1988
5
7
0
0
7
0
0


; JAS*€R
1988
7
12
15
0
0
15
0
0


JEFFE*SQK
1989
6
4
0
0
4
0
0


JQHKSOt*
1988
9
11
11
0
0
11
0
0


JO«£$
1988
9
7
0
0
7
0
0


K£0ttflf
1988
7
4
0
0
4
0
0


KOSSUTK
1988
7
10
10
0
0
10
0
0


LEE
1988
10.11
12
0
0
12
0
0


tIKil
1988
6
13
0
0
13
0
0


LOUISA
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
0
3
0
0


UON
1988
6.8
5
0
a
5
0
0


HAC1SQK
1988
9
1
0
0
1
0
0



1989
1
7
0
0
7
0
0

7-IA-238
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL RESULTS

*ESVLT3
RANCE OF
CONCtH-
TSAHOre
p«r«eiM
cdumr*
OATE
total
WELLS
SAMPLES
* OF
posmvt
WELtS
TOTAL f
SAMPLES
NUMBER OF
POSITIVE
SAMPLES

-
-------
PESTICIDE SAXPIMG IN THE STATE OF IOWA



VELl

SAHPL
RES&T3	
HAWSE OF
pesnaoe
cam>
DATE
TOTAL
WELLS
SAHPLED
„,
0 of
POSITIVE
WEILS
Tom 0
SAMPLES
HOWES OF
POSITIVE
SAMPLE
CONCEH-
TRAriOKS


I
*«.
X
IKL

I
KM.
•«
«CL

~ (PHORATE)
a'BKlEH
1966
4
6.7
1
0
0
5
0
0



1989
3
5
0
0
5
0
0


ascsou
1988
6
3
0
0
3
0
0


fAGE
1986
6.8
2
0
0
2
0
0



1987
3
1
0
0
1
0
0



1988
9
4
D
0
4
0
0


FALO ALIO
1983
5
1
0
0
1
0
0



1984
5
1
0
0
1
0
0



1989
1
5
0
0
5
0
0


HTHOUT«
1988
6
11
9
0
0
9
0
0


POCAHONTAS
1989
1
4
0
0
4
0
0


POLK
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0


POTTAWATTAKIE
1985
8
2
0
0
2
0
0



1986
6
12
3
0
0
3
0
0



1987
1,2,5
6.7
19
0
0
19
0
0



1988
7
3
0
0
3
0
0



1989
1
24
0
0
24
0
0


POWESHIEK
1988
6
4
0
0
4
0
0

7-IA-240
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL
RESULTS
	sawue *ESVIT$
RAWSE Of
caweEu-
TBAilotrs
(m»rt)

COWTT
DATE
TOTAl,
WEUS
SAMPLED
* OF
POSITIVE
WEILS
rotAi *
SAHW.ES
NUMBER Of
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE Of IOWA



, WU
fernr*, ,,
SAW L
ESESW.7S
MUSE OF
CONCEN-
TRATIONS
(U9/U
ptsriciae
com*
OA?i
TOTAL
WE LIS
1AMP1ED
# Of
POSITIVE
UEUS
torn *
SAMPLES
IWWBfft Of
POSITIVE
SAmts


(YEA*
MOtfTK)

I
Mtt.
<
KCL

t
MCI
<
MCL
~ CPHOftATE)
UIKNE8ASG
1988
5
5
0
0
5
0
0


UtttNESttiEK
1984
3
1
0
0
1
0
0



1905
1
6
2
0
0
3
0
0



1988
8
9
0
0
9
0
0


UOQOBUKY
1985
5
9
0
0
9
0
0



1986
4
6
4
0
0
4
0
0



1988
4
9
0
D
9
0
0



1988
B
3 °
0
3
0
0



19B9
3
5
0
0
5
0
0

TOTAL DISCRETE
WELLS OR SAMPLES


788
0
0
879
0
0

PICLORAM
ADAIR
1988
6
6
0
0
&
0
0


ADAMS
1988
12
4
0
0
4
0
0


ALLAMAKEE
1988
8
10
0
0
10
0
0


APPANOOSE
1988
9
5
0
0
5
0
0


AUDUBOK
1988
6
3
0
0
3
0
0


mm
1989
4
8
0
0
8
0
0


BLACK HAWK
1989
1.2
13
0
0
13
0
0


BOONE
1988
5
5
0
0
5
0
0


H&EHER
1988
6
9
0
0
9
0
0


ftOCMAMAU
1989
2,5
11
0
0
11
0
0

7-IA-242
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WE|.l
RESULTS
SAHPL
RESULTS
RAKGE OF
CONCttf*
twuks


I
HO.
V
KCl

I
WX
mi
(P1CLORAM)
BUEMA VJSTA
1988
6
7
0
0
7
0
0


flUTi£8
1988
5
7
0
0
7
0
0


CALHOU#
1988
6
4
0
0
4
0
0


CAR80U
1989
3
7
0
0
7
0
0


CASS
1988
7
5
0
0
5
0
0


CEDAR
1989
4
7
0
0
7
0
0


CERfiO GORDO
1988
8
7
0
0
7
0
0


CHEROKEE
1989
3
4
0
0
4
0
0


CHICKASAW
1988
4
6
0
0
6
0
0


CU»KE
1988
5
4
0
0
4
0
0


tiM
1988
8
6
0
0
6
0
0


cucnm
1988
8
10
0
0
10
0
a


txwa*
1988
12
8
0
1
8
0
i
0.100

CRAWfOflO
1988
10
6
0
0
6
0
0


MLUS
1988
10
2
0
0
2
0
0



1989
3
11
0
0
11
0
0


©AVIS
1988
5
4
0
0
4
0
0


DECATUR
1988
5
5
0
1
5
0
1
2.000

OELAUARE
1988
9
1
0
0
1
0
0



1989
4
12
0
0
12
0
0

7-IA-243
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA
•


ttU ttSULTS
smu
HESULfS
SA#GE OF
sesTicioe
COUNTY '
OAT*
TOTAL
wells
sampled
* Of
POSITIVE
WEILS
total #
3Am.ES
NUNftCR OF
POSITIVE
SAMPLES
CttCEK-
rsmotrs


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA




(ESULTS

W^SUtTS
KAHSE OF
COMCEK'
TBAtlOKS
(M9/U
pesticide
cowm
PATE
¦, ,, ¦
total
wells
sampleo
* Of
POSITIVE
wells
total »
SAMPLES
NUMBER Of
POSITIVE
SAMPLES




I I <
itu i act

I
mi
<
MCL
(PICLORAK)
HMiUT
1988
6
4
0 0
4
0
0


IDA
1988
4
4
0
0
4
0
0


10UA
1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JAGCSO*
1988
5
7
0
0
7
0
0


JASPER
1988
7
12
15
0
0
15
0
0


JEFFERSON
1989
6
4
0
0
4
0
0


JOHNSO#
1988
9
11
11
0
0
11
0
0


JOKES
1988
9
7
0
0
7
0
0


KEOk.UK
1988
7
4
0
0
4
0
0


KOSSUTH
1988
7
10
9
0
0
9
0
0


LEE 	
1988
10.11
12
0
0
12
0
0


MHX
1988
6
13
0
0
13
0
0


LOUISA
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
1
3
0
1
0.100

lto#
1988
6.8
5
0
0
5
0
0


HADSSO#
1988
9
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


HAHASKA
1988
10
1
0
0
1
0
0

7-IA-245
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



«EU.

, ,w»M
utmf?
4AKGE Of
CONCEIT'
TSATIOKS
CU8/U
pfcsrrCiOE
cowrr
0AT£
TOtAJ.
WE LIS
SAMPiED
# Of
POSITIVE
VEILS
TOT At #
SAMPLES
UUHBCft OF
POSITIVE
SAMPLES


at**
MOtfTK)

t
HCi
<
N£L

I
MCI
<
XCl
(P1CLORAM)
KAHASXA
1989
4
6
0
0
6
0
0


MR! CM
1908
10
1
0
0
1
0
0



1989
4
11
0
0
11
0
0


*Al«KAU
1988
7
6
0
0
6
0
0


KILtS
1988
5
6
4
0
0
4
0
0


WJTCHEU
1989
1
7
0
0
7
0
0


mtmA
1988
ID
5
0
0
5
0
0


mmm
1988
7
3
0
0
3
0
0


¦-*»tfiOK«T---
1988
9
3
0
0
3
0
0


*USCA?/?
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



yen
(ESUtTC
,, , • 8A»M
RESULTS, , ,
SAKCE -OF
CtfJCEK'
TRATIOWS
fugAJ
WSTJCIOS
COUMTV
mi-
TOTAL ,
WELLS
SAMPLES
* Of
wmm
WEILS
TOTAL t
SAMPIES
*UMB€R OF
POSITIVE
SAMPLES


(IBM
W#TK>

I
Htt
«
«Cl

wet
<
«l
(PICLORAM)
•POTTAWATTWI-E
1989
1
24
0
0
24
0
0


POWESKtEK
1988
6
4
0
0
4
0
0


R!*SGOU>
1988
S
4
0
0
4
0
0


« c
1988
6
1
0
0
1
0
0



1989
3
3
0
0
3
0
0


SCOTT
1989
6
10
0
0
10
0
0


S#6t«Y
1988
12
s
0
0
5
0
0


Slow
1988
7
10
0
0
10
0
0


STORY
1988
9
7
0
0
7
0
0


TAMA
1988
8
8
0
0
B
0
0


JAttOR
1989
1
4
0
0
4
0
0


UHIOK
1989
1
3
0
0
3
0
0


VAX BUfif#
1988
5
4
0
0
4
0
0


UAPEU.0
1988
10.11
9
0
0
9
0
0


UARREN
1988
9
12
0
1
t2
0
1
0.260

WASHINGTON
1988
7
8
0
0
8
0
0


UAttlE
1988
9
11
3
0
0
3
0
0


VE&SUR
1988
5
8
0
0
8
0
0


WIMIEflAfiO
1988
5
5
0
0
5
0
0


WINNESHIEK
1988
8
9
0
0
9
0
0

7-IA-247
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



, wcu
RESULTS
swu
RESUCT?
RAfiCE OF
CONCEK-
TSATlOtrt
(ug/O
mrtcm
COUNT*
0A7E
TOTAL
WELLS
SAMPtED
# W
POSITJVS
WEILS
WAi *
SAMPLES
JWMBeft OF
POSITIVE
SAKPUS




fc
mx
- - < -
MCL

I
Mtt
•«!
MCL
(PICLORAM)
WOOOSUftY
1988
4
9
0
0
9
0
0


WORTH
1988
8
3
0
0
3
0
0


URICHT
1989
3
5
0
0
5
0
0

TOTAL DISCRETE
WELLS OS SAMPLE?


678
0
4
678
0
4
0.100-2.000
PSOPACJfLO*
AMt«
1988
6
6
0
0
6
0
0


ADAMS
1988
12
4
0
0
4
0
0


AILAHAICEF
1988
8
10
0
0
10
0
0


APPANOOSE
19B8
9
S
0
0
5
0
0


AUOUBOK
1988
6
3
0
0
3
0
0


BEWTON
1989
4
8
0
0
8
0
0


; BOCK RAW*
1989
1.2
13
0
0
13
0
0


BOONE
1988
5
5
0
0
5
0
0


8REME4
1988
B
9
0
0
9
0
0


6UU1AMAK
1989
2.5
11
0
0
11
0
0


6UE*A VISTA
1988
6
7
0
0
7
0
0


BUTlEfi
1988
5
7
0
0
7
0
0


CALHOUN
1988
6
4
0
0
4
0
0


CAR WE, L
1989
3
7
0
0
7
0
0


CASS
1986
8
1
0
0
1
0
0



198?
1,5
6.7
13
0
0
13
0
0

7-IA-248
-------
PESTICIDE SAMPLING IN THE STATE OF IQUA






W?,
RAHCt Of
CONCCK-
TSAnoitS
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



«L1
iimrs
, SW^Ll
!. Jtesqits. mi
mwcE of
COUCfti-
TSAHOWS
fufl/U
Hsricm
COMWTT
DATE
total
WE LIS
SAMPLED
* OF
POSITIVE
yeas
TOTAt #
SAMPiEt
NUMBER Of
POSITIVE
SAW LIS


(WAR
MOtfTK)

i
MCI
<
HCL

t
MCI
<
*CL
(PROPACHLOG)
DOBUBUE
1989
6
11
0
0
11
0
0


EMMET
1988
a
1
0
0
1
0
0



1989
1
2
0
0
2
0
0


FAYtm
1988
4
8
0
0
8
0
0


FIOTD
1988
8
7
0
c
7
0
0


FRAHiaiN
1989
1
4
0
0
4
0
0


FREMONT
1987
3,5
6.7.8.9
15
0
0
15
0
0



1988
6
4
0
0
4
0
0


- e*E£«
1988
6
10
7
0
0
7
0
0


mm* ,
1988
10
5
0
0
5
0
0


GUTHRIE
1988
9
5
0
0
5
0
0


HAMILTON
1988
7
5
0
0
5
0
0


HANtOCK
1988
5
6
0
0
6
0
0


MUDtV
1989
3
6
0
0
6
0
0


. HARftlSON
1988
6
6
0
0
6
D
0


H£N&r
1988
8
5
0
0
5
0
0


HOWARD
1989
1
6
0
0
6
0
0


xunaotor ,
1988
6
4
0
0
4
0
0


IDA
1988
4
4
0
0
4
0
0


IOWA
1988
9
1
0
0
1
0
0

7-IA-250
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



UEU RESULTS
... sahple. ...
MIKE Of
COUCEK'
r*Ano«
(tS/U
HSTlttftS
COLMVl
BAT*
TOTAL } * Qf
WELLS | POSITIVE
SAMPLED WEILS
total f
SAMPLES
NUMBER Of
POSITIVE
SAMPLES


(TSAR
**TB>
I 1
| AU
<
*1

I
NU
<
WCi.
CPROPACHLC*)
IOWA
1989
5
6
0
0
I
6
0
0


JACKSO#
1988
5
7
0
0
7
0
0


jaspes
1988
7
12
15
0
0
15
0
0


JEffESSP*
1989
6
4
0
0
6
0
0


JOtWSOK
1988
9
11
11
0
0
11
0
0


JONES
1988
9
7
0
0
7
0
0


KEOKWf
1988
r
4
0
0
4
0
0


KOSSUTH
1988
7
10
10
0
0
10
0
0


LfE
1988
10.11
12
0
0
12
0
0


LI *at
1988
6
13
0
0
13
0
0


LOUISA
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
0
3
0
0


LYON
1988
6.8
5
0
0
5
0
0


MAOISOH
1988
9
1
0
0
1
0
0
.


1989
1
7
0
0
7
0
0


MAHASKA
1988
10
1
0
0
1
0
0



1989
4
6
0
0
6
0
0


HAH! ON
1988
id
1
0
0
1
0
0



1989
4
11
0
0
11
0
0

7-IA-251
-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



, UELl
RESULTS
, SAMPLI
I^ESUVT3
RANGE OF
COHCEN-
rs*rtons
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WLL
JESUITS
8AWL
RESULTS
«AK« Of
CO*C£K-
TKATIONS
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA
i '


HELL
EKfl.TS
S*t*u
RESULTS
MHSE Of
CONCEK-
tkauow
PtSTieiM
cowry
BATE
70TAL
WELLS
SAMPLED
0 Of
POSITIVE
WEILS
TOTAi #
SAHPUS
aUHMR OF
POSITIVE
SAMPLES
!

-------
PESTICIDE SAMPLING IN THE STATE OP IOWA



, . mi
ESULT*
SAHPL
E.fcpftTS,,, „
RANGE OF
COUCCK-
mnm
(V#A)
ptsrictK
COMTlf
DAT£
tqtau
WEUS
SAMPlEO
• Of
POSITIVE
WEILS
TOTAL t
SAMPLES
MUMfHjR Of
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



VEU
*esutT«

*E»ATS
RANGE OF
COKMK-
PtSTICH*
eatfTV
Date
TOTAL
WELLS
SAMPLED
# Of
POSITIVE
WELLS
TOTAL f
SAMPLES
JfUHft£R OF
POSITIVE
3AWLES


CYEAS
NOHTK)

t
mx
<
KCL

I
Ktt
KCL
CTERBUFOS)
SEtiTQU
1989
4
8
0
0
8
0
0


slack mat
1989
1.2
13
0
0
13
0
0


*00KE
1988
5
5
0
0
S
0
0


«RENfS
1984
7
2
0
0
2
0
0



1985
1
1
0
0
2
0
0



1986
6
2
0
0
2
0
0



1988
8
9
0
0
9
0
0


BUCHAKA*
1989
2,5
11
0
0
11
0
0


BUEVA VISTA
1985
5
2
1
1
3
2
1
0.300-12.000


1986
M
6.7
4
0
0
9
0
0



1988
6
7
0
0
7
0
0


suae*
1988
5
7
0
0
7
0
0


CALHOUN
1988
6
4
0
0
4
0
0


CARROLL
1989
3
7
0
0
7
0
0


CASS
1984
6.8
12
3
0
0
3
0
D



1986
6.8
2
0
0
2
0
0



1987
1,5
6.7
13
0
0
13
0
0



1988
7
5
0
0
5
0
0


CEOAft
1986
6
1
0
0
1
0
0

7-IA-256
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



, 11 -VEU ,

vi
¦ ¦ t»-j
I
RAtfCf OF
COKCEK-
TRAflOKS
ffcsncire
COlWTY
0AT€
total
MEUS
wiPteo
#OF
POSITIVE
WEIL'S
TOfAl f
SAMPLES
K*B£ft OF
POSITIVE
SA»L£S


tTEAd
•OHTH)

S
«a
<
«L

t I ,
RCt j *CL
(TERBUFOS)
CHMR
1989
4
7
0
0
7
I
0 0


CERRO COfiCO
1988
8
7
0
0
7
0
D


CXUKXEE
1985
5
8
1
0
11
1
0
11.000


1986
4,5
6.7
4
0
0
8
0
0



1989
3
4
0
0
4
0
0


CHICKASAW
1988
4
6
0
0
6
0
0


QJWKS
1988
5
4
0
0
4
0
0


cut
1984
7
2
0
0
2
0
0



1985
3,5
3
1
0
3
1
0
1.200


1986
4
6.7
4
0
0
7
0
0



1988
8
6
0
0
6
0
0


CLAYTON
1988
8
10
0
0
10
0
0


CUMTt*
1984
8
1
0
0
1
0
0



1988
12
8
0
0
6
0
0


CRAWFORD
1988
10
6
0
0
6
0
0


J>ALLAS
1988
10
2
D
0
2
0
0



198?
3
11
0
0
11
0
0


CAVSS
1988
5
4
0
0
4
0
0


DECATUR
19S8
5
5
0
0
5
0
0


: .DELAWARE
1984
9
4
0
0
4
0
0

7-IA-257
-------
PESTICIDE SAMPLING IN TNI STATE OF IOWA



Wtt

, SAPPi!
*EM,TS
*MfG£ OF
COUCEN-
mnc*s
t«g/U
pssnciOE ¦
cawrr
PATE
total.
ME LIS
SAMPLED
M Of
positive
WEILS
total 0
3AKPIES
WJHBEft Of
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



WELL *E«a.T*
SAMPU
*£SULTS
RAKCE Of
COUCtM-
nun cws


&
NCI
1
*Cl

k
MCI
<
HCL
(TERBUFOS)
mmt
1988
10
5
0
0
5
0
0


GUTHRIE
1988
9
5
0
0
5
0
0


KAMR7CM
1988
7
5
0
0
5
0
0


BAKCOCK
1988
5
6
0
0
6
0
0


HARDIN
1989
3
6
0
0
6
0
0


HARJUSOM
1988
6
5
0
0
5
0
0


mmt
1988
8
5
0
0
5
0
0


HOWARD
1989
1
6
0
0
6
0
0


mmoLot
1988
6
4
0
0
4
0
0


IDA
1986
6.7
2
0
0
2
0
0



1988
4
4
0
0
4
0
0


IOWA
1984
5
9
1
0
0
2
0
0



1986
6
1
0
0
1
0
0



1988
9
1
0
0
1
0
0



1989
5
6
0
0
6
0
0


JAOCSOM
1988
5
7
0
0
7
0
0


JASPER
1988
7
12
15
0
0
15
0
0


OEfFESSOH
1989
6
4
0
0
4
0
0


JOHKSCW
1988
9
11
11
0
0
11
0
0

7-IA-259
-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



WELL
H-SULTS
SAMPLE RESULTS
RANGE OF
co#c«-
? ft (incurs

pesriciet
COUKTY
DATE
total
WELLS
SAMPLED
* OF
POSITIVE
UPLLS
TOTAL #
SAMPLES
WJM8W OF
POSITIVE
$Atf>LC£


(TEAS
HQMTH}

t
NCI
«
XCL

I
NCI
<
XCL
(TERBUFOS)
JGWES
1988
9
7
0
0
7
0
0


*eokuk
1988
7
4
0
0
4
0
0


KOSSUTH
1988
7
10
10
0
0
10
0
0


ur
1988
10.11
12
0
0
12
0
0


tii»
1988
6
13
0
0
13
0
0


LOUISA
1988
4
6
0
0
6
0
0


LUCAS
1988
7
3
0
0
3
0
0


Lt
-------
PESTICIDE SAMPLING 1* THE STATE Of [QUA




RESULTS
SAWU
*E$ViTS
HAKCE Of
coucck-
r»*rio*s
cus/'U
rtSTJClDf
COLMTT
PATE
TOTAL
MEttS
SAMPLED
1 OF
POSITIVE
WELLS
TOtAl 0
SAMPLES
*JWB£R OF
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELl
JESUITS
3AKPL!
RESULTS
KANSE Of
cmctH-
¦ TRATIOWS
wsTjciee
COMTY
date
TOTAL
WEXLS
sAwneo
* Of
POSITIVE
WEILS
TOTAl f
SAMPLES
K*B£R Of
POSITIVE
. SAMPLES


(TEAR
KOHTH)

I
HCl
¦¦¦¦ « ¦ ¦
*CL

' t
NCt
. ...... ...
*CL
(TERBUFOS)
POCAHOHTAS
1989
1
4
0
0
4
0
0


POLK
1988
9
12
11
0
0
11
0
0



1989
1
1
0
0
1
0
0


fOTTM»TTM)E
1986
6
12
5
0
0
3
0
0



1987
1,2,5
6.7
19
0
0
19
0
0



1988
7
3
0
0
3
0
0



1989
1
24
0
0
24
0
0


POWESMIEt
1988
6
4
0
0
4
0
0


RINSGQiO
1988
5
4
0
0
4
0
0


SAC
1986
6
1
0
0
1
0
0



1933
6
1
0
0
1
0
0



1989
3
3
0
0
3
0
0


SCOTT
1989
6
10
0
0
10
0
0


SHEIB*
1984
6.8.9
4
0
0
4
0
0



1988
12
6
0
0
6
0
0


SIOUX
1984
3
6.9
3
0
0
3
0
0



1985
2
2
0
0
2
0
0



1988
7
10
0
0
10
0
0


STO*Y
1988
9
7
0
0
7
0
0

7-IA-262
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELt
*«UtT«
s«®u
ttSWLTS
ftAWX Of
CONCEH-
TMT10KS
PESTICIDE
cowtv
OAT£
TOTAL
WELLS
SAMPtEO
# OF
POSITIVE
WEILS
Totm #
SAMPLES
tfUHteft Of
POSITIVE
SAWUE


i aeAfi
MONTH>

I
NCI
.. «
*CL

1 I *
HCl j *CL
(TERBUFOS)
TAHA
1988
B
9
0
0
9
0
0


TAYLOR
1989
1
4
0
0
4
0
0


tSIJOK
1989
1
3
0
0
3
0
0


Mtt fiUK£K
1988
5
4
0
0
4
0
0


UAPgUO
1988
10.11
9
0
0
9
0
0


WARREN
1988
9
17
0
0
1?
0
0


WASHINGTON
1988
7
8
0
0
8
0
0



1988
9
11
3
0
0
3
0
0


*B$TgR
1988
5
8
0
0
8
0
0


WI>MEBA«
1988
5
5
0
0
5
0
0


vtme$HiCK
1984
3
1
0
0
1
0
0



1985
1
6
2
0
a
3
0
0



1988
8
9
0
0
9
0
0


WOODBURY
1985
5
9
2
0
9
2
0
1.700-2.100


1986
4
6
4
0
0
4
0
0



1988
4
9
0
0
9
0
0


WORTH
1988
8
3
0
0
3
0
0


WJ16KT
1989
3
5
0
0
5
0
a

TOTAL DISCRETE
WILLS OR SAMPLES


787
6
i
885
8
1
0.300-12.000
7-IA-263
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



VEU
RESULTS
SAWU
RESISTS
RAKGE Of
CONCCM*
TRAtlOHS
 TERBWOS SULFOKE
8JJEHA VISTA
1986
4,5
6.7
4
0
0
9
0
0


CHEROKEE
1986
4,5
6.7
4
0
0
8
0
0


clat
1986
4
6.7
2
0
0
6
0
0


IDA
1986
6,7
2
0
0
2
a
0


0'68tEK
1986
4
6.7
1
0
0
7
0
0


UOOD8UR*
1986
4
6
4
0
0
4
0
0

TOTAL DISCRETE
WELLS OR SAMPLES


13
0
0
36
9
0

*- TICHLOROETHENE
OUBUtJUE j 1984
1
0
0
1
0
0

TOTAL DISCRETE
WELLS OR SAMPLES


1
0
0
1
0
0

TQXAPHENE
88EHE8
1984
7
2
0
0
2
0
0



198S
1
1
0
0
1
0
0



1986
6
2
0
0
2
0
0


BUENA VISTA
1985
S
2
0
0
2
0
0



1986
4,5
6.7
4
0
0
8
0
0


CASS
1984
6,8
12
3
0
0
3
0
0



1986
6
1
0
0
1
0
0


CttAR
1986
6
1
0
0
1
0
0


CHEROKEE
1985
5
8
0
0
8
0
0

7-IA-264
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



*£Ll
JESUITS
swu
results
«A«C£ OF
COKCM-
TRAfTOWS
(«8/U
PESTJCI6E
coutflnr
PATE
total
WELIS
SAMPLED
* OF
POSITIVE
WELLS
TOTAL #
SAMPLES
IMHBER OF
POSITIVE
SAMPLES


-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



W-Ll
RESULTS

ftES&TS
¦
fiANGE OP
COMCCN-
TSAUgtt
(U9/U
pfesncioe
counn
GATfc
TOTAL
WfLiS
sa* Pi.ro
* Of
POSITIVE
WELLS
TOTAL *
SAMPLES
WXB£R Of
POSITIVE
SAWUS


(TEAS
MONTH}

I
RCi
<
HCL

t
no.
<
MCI
CTOXAPHEME)
MLO ALTO
1983
5
i
0
0
1
0
0



1984
5
i
0
0
1
0
0


SAC
1986
6
1
0
0
1
0
0


SKE.L6T
1984
6.8.9
4
0
0
4
0
0


sioux
1964
3
6.9
3
0
0
3
0
0



1985
2
2
0
0
2
0
0


VINKESKIEK
1984
J
1
0
0
1
0
0



1985
1
6
2
0
0
3
0
0


. VOOOBURY
1985
5
9
0
0
9
0
0



1986
4
6
4
0
0
4
0
0

TOTAL DISCRETE
WELLS OR 5AHPLE5!,


59
0
0
106
0
0

T*mU*AU«
ADAIR
1988
6
6
0
0
6
0
0


ADAMS
1988
12
4
0
0
4
0
0


ALLAMAKEE
1988
8
10
0
0
10
0
0


APPAMOOSE
1988
9
5
0
0
5
0
0


AlffiUBOK
1988
6
3
0
0
3
0
0


BENTON
1984
5
1
0
0
1
0
0



1989
4
8
0
0
8
0
0


siACK mat
1989
1.2
13
0
0
13
0
0

7-IA-266
-------
PESTICIDE SAMPLING IN THE STATE OF IOUA



	«kk.Maais.	
.. . . SAHfU£ HSVvTS
ftAMCE Of
CONC£K»
TRAHOWS
{ua/U

ccutm
DATE
total
writs
SAMPLE
* OF
POSITJ Yt
utus
TOUt f
SAMPLES
WJKBCR OF
POSITIVE
SAKPLCS


am
HOSTH)

i.
*Cl
<
m

£
wx
*
HCL
(TRIFLURALIN)
SOOME
1988
5
5
0
0
5
0
0


SREME8
1934
7
2
0
0
2
0
0



1985
1
2
0
0
2
0
0



1986
6
3
0
0
3
0
0



1988
8
9
0
0
9
0
0


SUCHANW
1989
2,5
11
0
a
11
0
0


BUENA VIST*
1985
5
2
0
0
2
0
0



1986
4,5
6.?
4
0
0
8
0
0



1988
6
7
0
0
7
0
0


&UUES
1988
5
7
0
0
7
0
0


CAlHOUtt
1988
6
4
0
0
4
0
0


CARROIL
1989
3
7
0
0
7
0
0


CASS
1984
6,8
12
4
0
0
4
0
0



1986
6.8
3
0
0
3
0
0



198?
1,5
6.7.8
H
0
0
14
0
0



1988
7
5
0
0
5
0
0


CEOAR
1986
6
1
0
0
1
0
0



1989
4
7
0
2
7
0
2
0.040

CERP.O GORDO
1988
8
7
0
0
7
0
0

7-IA-267
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELL
sesolts

e.skwits
«AHC£ Of
CONCCK-
TWttdtS
«sri£iM
camr
; OATfc
USTAL
WELLS
SAMPLED
* OF
POSITIVE
UFILS
TOtAl *
SAMPLES
WJNB£R Of
POSITIVE
SA»L€S


« sc
#•*
ii

I
HCL
«
IICl

I
NCI
¦<
MCI
(TRIFLURAUN)
CHEROKEE
1985
5
10
10
0
0
10
0
0



1986
4,5
6.7.8
11
0
0
13
0
0



1989
3
4
0
0
4
0
0


CHICKASAW
1988
4
6
0
0
6
0
0


«ju»a
1988
5
4
0
0
4
0
0


cur
1984
7
10
6
0
0
6
0
0



1985
3,5
10
4
0
0
4
0
0



1986
4,5
6.7.8
14
0
0
16
0
0



1988
8
6
0
0
6
0
0


* CLAYTON
1988
8
10
0
0
10
0
0


CLINK#
1984
8
1
0
0
1
0
0



1988
12
8
0
0
8
0
0


CRAWFORD
1988
10
6
0
0
6
0
0


OALLAS
1988
10
2
0
0
2
0
0



1989
3
11
0
0
11
0
0


0AV1S
1988
5
4
0
0
4
0
0


OECATUR
1988
5
5
0
0
5
0
0


. DELAWARE
1984
9
4
0
0
4
0
0



1985
3
1
0
0
1
0
0

7-IA-268
-------
PESTICIDE SAMPLING IN THE STATE OF 10UA



UELl
lESUiTS
S«»L
*£3UIT$
«A*C£ Of
CONCEH-
mnart
(ugA)
fESTJCJ!*
COUHlf
Wit
ior*t
VEU.5
SAMPtED
* OF
POSITIVE
WELLS
TOTM #
SAMPLES
KUN&ft OF
POSITIVE
SAMPLES
-

aw
WKTK)

fc
MCI
<
*».

t
HCl
<
(TRIFLURAIIN)
0€LAUAR£
1986
6
2
0
0
2
0
0



t988
9
1
0
0
1
0
0



1989
4
12
0
0
12
0
0


MS HOIMES
1988
8
1
0
0
1
0
0


-
1989
5
6
0
D
6
0
0


CICKlKSOtf
1988
8
6
0
0
6
0
0


DUBLWUE
1984
5
3
0
0
3
0
0



1986
6
1
0
0
1
0
0



1988
8
1
0
0
1
0
0



1989
6
11
0
0
11
0
0


EHffiT
1988
8
1
0
0
1
0
0



1989
1
2
0
0
2
0
0


FAYETTE
1988
4
8
0
0
8
0
0


aon>
1988
8
7
0
0
7
0
0


FMHICUH
1989
1
4
0
0
4
0
0


FREMONT
1985
8
2
0
0
2
0
0



1986
8
5
0
0
5
0
0



1987
3,5
6.7.8.9
15
0
0
15
0
0



1988
6
4
0
0
4
0
0


CREEtlE
1988
6
10
7
0
0
7
0
0

7-IA-269
-------
PESTICIDE SAMPLING IN THE STATE OF tOUA



MELl
results
SA*PL£ JESUITS
RAWS Of
COtfCEK-
mnms
fug/U
PEsrictfie
COJKTV
0AT£
total
SAMPLED
* Of
POSITIVE
VEILS
TOTAL f
SAMH.ES
) NUMBER OF
POSITIVE
SAMPL£S


at**
**TH>

I
HO.
)£L

t
*a
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



WELl
RESULTS
, .6P6*
RESETS
RAKCf Of
CONCEK-
TRATTOKS
rus/u
PtSTSClfiE
COUNT*
BATE
TOTAL
WELLS
tAM>L€0
* OF
POSITIVE
WEILS
tetAt #
SAMPLES
WABEft Of
POSITIVE
SAMPLES


tltEAfr
WJKTB}

I
MCt
<
HCL

I
NCL
<
ttCL
(TR1FLURAL1M)
JEFFE8S0H
1989
6
4
0
0
4
0
0


JOHNBOH
1988
9
11
11
0
0
11
0
0


JOflSS
1988
9
7
0
0
?
0
0


KEOKUK
1988
7
4
0
0
4
0
0


KOSSUTH
1988
7
10
10
0
0
10
0
0


LEE
1988
10.11
12
0
0
12
0
0


LIM
1988
6
13
0
0
13
0
0


UWlSA
1986
4
6
0
0
6
0
0


UJCAS
1988
7
3
0
0
3
0
0


ITON
1984
6
1
0
0
1
0
0



1985
7
5
0
0
5
0
0



1986
5
7.8
8
0
0
8
0
0



1988
6.8
5
0
0
S
0
0


MAD J SCW
1988
9
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


MAHASKA . .
1988
10
1
0
0
1
0
0



1989
4
6
0
0
6
0
0


NAR1C*
1988
10
1
0
0
1
0
0



1989
4
11
0
6
11
0
0

7-IA-271
-------
PESTICIDE SAMPLING IN THE STATE OF 10UA

1
1
	VEU.
JESUITS	
... SAXPl
RESULTS
HAMCE Of
CONCEK-
rsAno*rt
(USA)
pesticide
camy
DATS.
total
WELLS
sjotPteo
* Qf
POSITIVE
UEIU
TOtAl #
SAMPLES
NUMBER Of
POSITIVE
SAMPLES


KONTH)

fc
ltd
<
XCL

I
NCt
<
ftCl
(TRIFLURALIN)
MARSHALL
1988
7
6
0
0
6
0
0


WU.S
1985
8
1
0
0
1
0
0



1986
6.8
5
0
0
5
0
a



1987
5
6.7.9
14
0
0
14
0
0



1958
5
6
4
0
0
4
0
0


MiTCHCU
1984
7
1
0
0
1
0
0



1986
6
1
0
0
1
0
0



1989
1
7
0
0
7
0
0


WONOKA
1988
10
5
0
0
5
0
0


HON TOE
1988
7
3
0
0
3
0
0


MONTGOtSRY
1986
8
1
0
0
1
0
0



1987
5
6.7
9
0
0
9
0
0



1988
9
3
0
0
3
0
0


*i$CA?!#E
1984
7
10
5
0
0
5
0
0



1988
4.5
10
0
0
10
0
0


«'WU£K
1985
5
3
0
0
3
0
0



1986
4
6.7
1
0
0
5
0
0



1989
3
5
0
0
5
0
0


OSCEOU
1985
10
1
0
0
1
0
0

7-IA-272
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



	 ...ttfWL ,
iftifcT?	
	W«PU
JESUITS ,
RAK& Of
TBAT tOttS
-------
I
PESTICIDE SAMPLING IN THE STATE OF IOKA



well
H-SULTS
SAMPU
RESULTS
RAKGt Of
:';tOKC£K»
rsArtcws

ffesticioe
COUNTY
PATE
TOTAL
WELLS
SAMPLED
* Of
POSITIVE
WEILS
W*l *
SAMPUS
NUMBER Of
POSITIVE
SAMPLES




t
MCI
<
MCL

£
MCL
<
*Cl
(TR1FLURAL1N)
POTTAWATTAMIE
1989
1
24
0
0
24
0
0


POWESHIEK
1988
6
4
0
0
4
0
0


*l*6GOUJ
1988
5
4
0
0
4
0
0


SAC
1986
6
2
0
0
2
0
0



1988
6
1
0
0
1
0
0



1989
3
3
0
0
3
0
0


SCOTT
1989
6
10
0
0
10
0
0


WiEtW
1984
6,8.9
5
0
0
5
0
0



1988
12
6
0
0
6
0
0


SIOUX •
1984
3
6.9
3
0
0
3
0
0



1985
2
7
4
0
0
5
0
0



1986
7.8
2
0
0
2
0
0



1988
7
10
0
0
10
0
0


sroftr
1988
9
7
0
0
7
0
0


TAHA
1984
4,5
6.7
3
0
0
5
0
0



1988
8
9
0
0
9
0
0


TAYLOR
1989
1
4
0
0
4
0
0


UKI
-------
PESTICIDE SAMPLING IN THE STATE OF IOWA



U£Ll
lESJLTS
SAHPL.
sesyus
RANGE OF
COUCEN-
TRA ft (WS
-------
Intentionally Blank Page
-------
STATE OF lOU
WELLS BY COUNTY

TYPES OF WELIS
' SOURCE OF
CONTAMINATION
CMJHBE* or w£us>
DRJMCJHC WATER
MONITOR!WG
OTHER
TOTAL
¦SKPLC
it
<
*a
TOTAL
SMPLD
i
ttCL
%¦
MCI
TOTAL
SHPU>
* -
HCL
C :
*CL
NFU*
PS
UMC*
Adfttr
6
0
0
D
0
0
0
0
0
0
0
0
Adaat
4
0
i
0
0
0
0
0
0
1
0
0
AUmk«e
10
0
0
0
0
0
0
0
0
0
0
0
Appanoose
5
0
0
0
0
0
0
0
0
0
0
0
Audubon
3
0
0
0
0
0
0
0
0
0
0
0
Sefrton
9
0
2
0
0
0
0
0
0
2
0
0
flack Hawk
13
1
1
0
0
0
0
0
0
2
0
0
Soone
5
0
0
0
0
0
0
0
0
0
0
0
3r«raer
15
0
5
0
0
0
0
0
0
5
0
0
;Buchanan
11
0
0
0
0
0
0
0
0
0
0
0
Suens vtsta
10
2
1
0
0
0
0
0
0
3
0
0
^lUtl€P
7
0
1
0
0

0
0
0
1
0
0
Calhoun
4
0
0
0
0
0
0
0
0
0
0
0
CarrpU
7
0
0
0
0
0
0
0
0
a
0
0
Cass
7
0
2
4
0
0
2
0
1
3
0
0
'-Cedar
a
1
2
0
0
0
0
0
0
3
0
0
Cerro Gordo
7
0
2
0
0
0
0
0
0
2
0
0
Chereke*
13
1
1
3
0
1
0
0
0
3
0
0
Chickasaw
6
0
0
0
0
0
0
0
0
0
0
0
Clwfce
4
0
0
0
0
0
0
0
0
0
0
0
ciay
16
2
5
6
0
1
0
0
0
8
0
0
Clayton
29
0
16
0
0
0
1
0
1
17
0
0
:: Clinton
9
0
3
0
0
0
0
0
0
3
0
0
Crawford
6
0
3
0
0
0
0
0
0
3
0
0
OalUs
13
0
7
0
0
0
0
0
0
7
0
0
-Oav?s
4
0
0
0
0
0
0
0
0
0
0
0
Oecatur
5
0
2
0
0
0
0
0
0
2 | 0
0
Oe? aware
18
1
9
0
0
0
0
0
0
10
0
0
Dee Moinei
7
0
D
0
0
0
0
0
0
0
0
0
tiickinson
6
0
2
0
0
0
0
0
0
2
0
Q
Dubuque
15
0
3
0
0
D
0
0
0
3
0
a
	 —	 -	7-IA-277
Preceding page blank
-------
STATE OF IOUA
UELLS BV OOUKTt
comrrv
rfP£S OF VEltS
SOURCE OF
CONTAMINATION
CttJHBEfi Of UEC.LS)
obinkiw WAlES
MOKlTORlHC
OTK6S
TOTAL
SWL6 ;
¦g
;xk:::
<
*Cl
TOTAl
: SMPLG
£
HCL [
! **
I
TOTAL
J
HO.
¦ ¦ :
*a ;
HFU*
PS*
war*
{MK
3
0
1
0
0
0
0
0
0
1
0
0
Fayette
8
0
1
0
0
0
0
0
0
1
0
0

15
0
5
0
0
0
0
0
0
5
0
0
;:Frinklin
4
0
1
0
0
0
0
0
0
1
0
0
franont
7
0
0
2
0
0
7
0
1
1
0
0
:£T«ene
7
0
1
0
0
0
0
0
0
1
0
0
Gnndy
5
0
0
0
0
0
0
D
0
0
0
0
fiuthrle
5
0
0
0
0
0
0
0
0
0
0
0
rliamUton
5
0
0
0
0
~
0
0
0
0
0
0
Hancock
6
0
0
0
0
0
0
0
0
0
0
0
Hindin
6
0
0
0
0
0
0
0
0
0
0
0
Htrrison
6
0
0
0
0
0
0
0
0
0
0
0
Henry
5
0
0
0
0
0
0
0
0
D
0
0
Howard
6
0
1
0
0
0
0
0
0
1
0
0
HuniioU
4
0
0
2
0
0
0
0
0
0
0
0
Idb
6
0
2
0
0
0
0
0
0
2
0
0
-lOtfa
21
0
8
31
0
16
0
0
0
24
0
0
Jackson
7
0
1
0
0
0
0
0
0
1
0
0
Jasper
15
0
2
0
0
0
0
0
0
2
0
0
Jefferson
4
0
0
0
0
0
0
0
0
0
0
0
Johnson
11
0
0
0
0
0
0
0
0
0
0
0
;Jones
7
0
0
0
0
0
0
0
0
0
0
0
KeoktA
4
0
0
0
0
0
0
0
0
0
0
0
Kossuth
10
0
2
0
0
0
0
0
0
2
0
0
Lee
12
0
1
0
0
0
0
0
0
1
0
0
tim ,
13
0
0
0
0
0
0
0
0
0
0
0
Louisa
6
D
2
0
0
0
0
0
0
2
0
0
Lucas
3
0
1
0
0
0
0
0
0
1
0
0
Lyen
6
2
2
5
0
2
0
0
0
6
0
0

B
0
3
0
0
0
0
0
0
3
0
0
Mahaska
7
0
0
0
0
0
0
0
0
0
0
0
7-IA-278
-------
STATE Of I QUA
WELLS BY COUNTY
corny
TYPES OF VELIS
SOURCE OF
COHTAM HAT 10*
OKJUOKS WAttf!
MOHITOSIHG
0?MES
TOTAL
SHPLD
MCL
MCL
TOTAL
SMPU5
i
MCL
K
MCL
TOTAL
SMPLD
£
MCI
<
MCL
HfU*
:
PS
mac
Martar
12
0
1
0
0
0
0
0
0
1
0
0
HersfcaU
6
0
0
0
0
0
0
0
0
0
0
0
HHU
7
0
1
2
0
0
4
0
0
1
0
0
HitchalL
19
1
7
0
0
0
0
0
0
B
0
0
Honcoa
5
0
1
0
0
0
0
0
0
1
0
0
Monroe
3
0
0
0
0
0
0
0
0
0
0
0
Montgcmery ¦
4
0
0
2
0
0
0
0
0
0
0
0
Muscatfn*
13
0
2
0
0
0
0
0
0
2
0
0
0'6r1ef»
8
1
3
0
0
0
0
0
0
4
0
0
Osceola
3
1
0
5
0
1
0
0
0
2
0
0
fage
6
0
3
0
0
0
1
0
0
3
0
0
Pato Atto
6
1
1
5
0
4
0
0
0
6
0
0
Plymouth
9
0
1
0
0
0
0
0
0
1
0
0
Pocahontas
4
1
0
2
0
0
0
0
0
1
0
0
Polk
12
0
2
0
0
0
0
0
0
2
0
0
fottawattam>«
32
1
7
2
0
0
9
0
5
13
0
0
Poweshiek :
4
0
0
0
0
0
0
0
0
0
0
0
fi^gold
4
0
1
0
0
0
0
0
0
1
0
0
Sac
6
0
3
0
0
0
0
0
0
3
0
0
Scott
10
0
0
0
0
0
0
0
0
0
0
0
Shelby
9
0
4
0
0
0
0
0
0
4
0
0
Sioux
16
3
5
2
0
1
0
0
0
9
0
0
Story
7
0
0
0
0
0
0
0
0
0
0
0
Tama
11
0
4
0
0
0
0
0
0
4
0
0
Taylor
4
0
2
0
0
0
0
0
0
2
0
0
ynion
3
0
1
0
0
0
0
0
0
1
0
0
Van Buren
4
1
0
0
0
0
0
0
0
1
0
0
Wspelto
9
1
1
0
0
0
0
0
0
2
0
0
Vfarr«n
17
0
1
0
0
D
0
0
0
1
0
0
Washington
6
0
1
0
0
0
0
0
0
1
0
0
; Vayn«
3
0
0
Q
0
0
0
0
0
0
0
0
7-IA-279
-------
STATE Or lOM
WELLS BY COJNTt
cam*
TYPES OF wells
SOURCE OF
CONTAMINATION
(NUMBER Of WEUS)
WATES
#0*lT«HW
07HEA
TOTAL
W>U>
"3
xa
	«
MCL
TOTAL
SHPLD
I
KCL
< ¦
na
TOTAL
SHPU>
s
«CL
<
MCL
HFU*
*
PS
war*
Wefcatar
8
0
2
0
0
0
0
0
0
2
0
0
UfflTMlMSO
5
0
0
0
0
0
0
0
0
0
0
0
wJf*w£b»«k
12
0
3
0
0
0
0
0
0
3
0
0
Woodbury
18
2
0
2
0
0
0
D
0
2
0
0
Worth
3
0
0
0
0
0
0
0
0
0
0
0
Wripht
5
0
0
0
0
0
0
0
0
0
0
0
TOTAL
OtSCfitTE
miS/ SAMPLES
82?
23
159
75
0
26
24
0
8
216
0
0
HFU = Known or Suspected Momal Field Use
PS = Known or Suspected Point Source
UKK » Unknown
7-IA-280
-------
Welt Sampling by County
(Total Number of Wells with Pesticide Detections / Total Number of Wells Sampled)
>0/12::
0/3:*
¦y.C/Z
m/z:
Pesticides Detected
Total Wells Sampled
per County
E3
CZJ
£3
> 1600
501 to 1030
101 to 580
51 to 138
1 1o 53
~ No wells sampled
Alachlor
Atrazine
Chlordane
2, 4-D
2, 4,5-T
Dieldrin
Endosulfao I
Endosulfan EI
Heptachlor Epoxide
Metribuzin
PiCloram
Propazine
7-KS-l
-------
Intentionally Blank Page
-------
KANSAS
OVERVIEW OF STATE LEGISLATIVE AND ENVIRONMENTAL POLICIES
REGARDING PESTICIDES IN GROUND WATER
Ground water forms the cornerstone of Kansas water supply. Approximately 85% of all
water used in Kansas is supplied from ground water. Irrigation continues to be the largest
user of pound water. However, in rural areas, ground water supplies 85% of the drinking
water. Ground water resources are abundant in the western two-thirds of the state and
limited in the eastern one-third. Ground water in storage in Kansas has been estimated to
be 385 million acre-feet. This amount equals roughly 2 to 7 years of normal precipitation,
or 35 times the amount of water present in the state's surface water reservoirs.
The Kansas Groundwater Quality Monitoring Network, established in 1976, is a cooperative
program between the Kansas Department of Health and Environment (KDHE) and the
United States Geological Survey (USGS). It is the principal statewide monitoring effort.
The primary goal of the network is to establish and track regional ground-water quality.
Between 1976 and 1982 1000 wells were sampled. The current network of 250 wells consists
of 72% public supply wells, 18% irrigation wells, 8% private domestic wells, 2% livestock
watering wells, and 1% industrial supply wells.
In July of 1985 the Kansas Legislature passed the Kansas Chemigation Safety Law. The law,
administered by the Kansas State Board of Agriculture (KSBA), requires that all
chemigators register with KSBA annually, install all proper anti-pollution devices on their
irrigation systems, monitor the chemigating system and keep the necessary records pertaining
to the chemical applications made through the irrigation systems. In 1989, the Kansas
Legislature passed the Pesticide Management Areas Act. This legislation empowers the
Secretary of Agriculture to designate pesticide management areas after receiving notification
from the USEPA or the Kansas Department of Heath that a pesticide poses a serious threat
to the public health, safety, or welfare of the natural resources of the state. All pesticide
management ares will have pesticide management plans with provisions for the handling or
release of pesticides and guidelines for best management practices.
Kansas has established a Ground Water Contaminant Cleanup Target Concentrations List
that is used as guidance when dealing with contaminated ground water. The target
concentrations include two levels;
1. • Kansas Notification Level (KNL) or Alternate Kansas Notification Level
(AKNL) is the concentration at which ground water is administratively
defined to be contaminated. When ground water cleanup activities are
required the "target" concentration is the KNL/AKNL.
7-KS-3
Preceding page blank
-------
2. Kansas Action Level (KAL) or Alternate Kansas Action Level (AKAL) is the
concentration at which long-term exposure to the contaminant is
unacceptable. An expeditious clean-up plan must be initiated at this
concentration. As currently practiced, ground water clean-up activities must
provide concentrations less than the KAL/AKAL.
The KNL/KAL is applicable to fresh, usable water aquifers. The AKNL/AKAL apply to
alluvial aquifers and/or aquifers which surface through springs or seeps and contribute to
surface waters of the State. This list contains over 200 chemicals, including pesticides, acid
extractables, base neutral compounds, volatile organics, general chemical/physical
parameters and metals. This list changes as information becomes available.
REPORTED STUDIES OF PESTICIDES IN GROUND WATER
Steichen, James; James Koelliker, Doris Grosh, Alan Heiman, Robert Yearout, Victor Robbins.
Kansas Department of Health and Environment, Bureau of Water Protection, Water Quality
Assessment Section, Topeka, KS 66612, Tel: 913-296-5570. Contamination of Farmstead
Wells by Pesticides, Volatile Organics, and Inorganic Chemicals in Kansas (Phase I). Study
conducted December 1985 through February 1986. (Study reported summer 1988)
Primary Objective
The purpose of this study was to determine, statistically from a random survey, the extent
of contamination of rural Kansas farmstead wells by pesticides, volatile organic compounds,
and inorganic constituents. A second goal was to determine relationships, if any, between
agricultural practices around the wells and the water quality from the wells.
Design
Wells sampled in this study were selected randomly by county based on the farmstead well
density as reported in the 1980 census data for farm housing. Two subject farms were
selected from each of 48 counties and four were picked from two counties because of the
large number of wells in those counties. The counties selected tended to be clustered in the
central and northern parts of the State, which mirrored the distribution of all farmstead
wells across the State.
Because information about the nature of activities around the well and about the well itself
were also needed, four criteria were set forth that had to be met before a well was enrolled
the program:
1.	the well had to be at a farmstead performing farming operations
2.	residents must be familiar with the activities near the well for the past ten years,
3.	resident must be willing to cooperate,
4.	residents must use water from the well in their home.
7-KS-4
-------
After all of the wells selected were evaluated through communication with owners, 103 wells
were selected for study. This provided a sampling ratio of about 1 in 400.
The water samples taken included only raw, untreated water collected as close to the well
as possible. The wells were purged for 5 minutes before samples were collected. All
samples were kept chilled during transport and storage until analytical tests were conducted.
All samples were analyzed by the KDHE laboratory for pesticides using EPA-approved
methods (U.S. EPA Method 608 and methods for organochlorine pesticides and
chlorophenoxy acid herbicides). The procedure for pesticides included extraction and
preparation followed by gas chromatography and detection by electron capture.
Results and Conclusions
Eight wells in seven counties had detectable levels of pesticides. The herbicide atrazine was
the only pesticide found more than once. It was detected in four wells at concentrations
greater than U.S. EPA's lifetime health advisory level of 3 ug/L. All wells with pesticide
detections except one were resampled. The well that was not resampled had a broken
pump. The initial samples were taken in the winter months and the confirmatory samples
were taken in May or June. Resampling confirmed the presence of pesticides in all cases
usually with higher concentrations that the original samples.
While the presence of pesticides in farmstead wells can certainly attributed to human
activities, the actual source could not be determined. The low concentrations found
indicated that most farmstead wells were not grossly contaminated by pesticides at the time
of sampling.
Results from the random sample of 103 wells provided a statistical estimate that water from
about 1,200 to 6,000 of the 40,000 farmstead wells in Kansas have detectable levels of
pesticide in them.
Robbins, Victor; Snethen, Don. Department of Health and Environment, Bureau of Water
Protection, Water Quality Assessment Section, Topeka, KS 66612, Tel; 913-296-5570.
Farmstead Well Contamination Factor Study (Phase II). Study conducted November 1986
through December 1987.
Primary Objective
This study is the second phase of an ongoing project to determine the extent of
contamination of farmstead well water, determine the factors that contribute to the
contamination of these wells, and institute an educational program to increase the awareness
of the situation and provide ways to reduce the risk of contamination. Findings from this
study will be used by investigators and Kansas State University to develop a predictive
model.
7-KS-5
-------
Design
Approximately 100 wells were selected according to a predetermined strategy, rather than
a random selection process as in Phase I, Eighty-four of the wells sampled were located in
the eastern half of Kansas. Twenty wells used during the Phase I survey were also sampled.
The wells were selected to provide a wide range of a number of factors that could influence
well-water quality, such as depth to water, type of well, construction, proximity of the well
to potential contamination sources, and soil characteristics. Wells selected for this phase
of the study were both older and shallower, on average, than those randomly selected for
sampling in the first phase of the study.
The samples were analyzed by the KDHE laboratory for pesticides using EPA-approved
methods (U.S. EPA Method 608 and methods for organochlorine pesticides and
chlorophenoxy acid herbicides). Where pesticides were detected, wells were resampled 4
months after the initial detection.
Results and Conclusions
It should be noted that the wells selected for this study were selected on the basis of their
potential to be contaminated. Eleven of the wells sampled contained synthetic chemicals.
Nine wells from six counties contained one or more pesticides. Eight pesticides were
detected: alachlor; chlordane; dieldrin; endosulfan I & II; metribuzin; 2,4-D; and trifluralin
(Treflan). The most commonly found synthetic chemical was the herbicide trifluralin,
detected in three wells. Next most often found were the insecticides chlordane and dieldrin,
each found in two wells.
Four pesticides were detected at concentrations above which the Kansas Department of
Health and the Environment (KDHE) considers the water contaminated, the Kansas
Notification Level. Three pesticides (chlordane, dieldrin, and trifluralin) exceeded the
Kansas Action Level, the level at which KDHE considers the water unacceptable as a
drinking water supply.
Sixty percent of the wells selected for sampling were drilled, 38% dug and 2% driven. The
average age of all wells was 45 years (range 1-110 yrs.) and the average depth to water was
25 feet (range 0-100 ft.). In contrast the average age of the wells with synthetic
contaminants was 72 years and the average depth to water was only 12 feet. Nine of the
eleven wells with synthetic chemicals were hand dug and rock walled. These comparisons
suggest that age, type of construction and depth to the water table are factors that influence
the likelihood of a well being contaminated. The findings from this study, along with
several other factors, will be statistically analyzed and utilized to develop a predictive model.
Seamer, John, USGS, 1950 Constant Avenue, Lawrence, KS 66046, Tel: 913-842-9969;
Stullken, Lloyd E., et al 1987. Reconnaissance of Water Quality in the High Plains Aquifer
Beneath Agricultural Lands, South-Central Kansas. Study conducted August-September
1984. (Study reported 1987, 25 pp.)
7-KS-6
-------
Primary Objective
The specific objective of this reconnaissance study was to evaluate the effects of land used
for agriculture (i.e., irrigated cropland and nonirrigated rangeland) on water quality of the
High Plains aquifer.
Design
The central part of the Great Bend Prairie, an area of about 1,800 square miles overlying
the High Plains aquifer in south-central Kansas, was selected for the study because it has
sandy soils, a shallow water table, relatively large annual precipitation, and includes large
areas that are exclusively irrigated cropland or nonirrigated rangeland. These characteristics
may allow for a greater potential for ground-water contamination than may be found in the
High Plains aquifer as a whole.
The design of the Kansas study paralleled that of the U.S. Geological Survey's Toxic Waste -
Groundwater Contamination Program in that conceptual inferences of the contaminant flow
system were developed, a data-collection plan was formulated, and data were collected and
analyzed according to that plan.
The data-collection network in this study consisted of 27 wells in Barton, Edwards, Pawnee,
and Stafford Counties. Water samples were collected from the 27 wells during August and
September 1984. Of the 27 wells, 13 were located on irrigated cropland and the remaining
14 wells were situated on nonirrigated rangeland. Factors considered during the selection
of well sites were that there be no obvious point source contamination and that the well be
surrounded by sufficient land of the same use to ensure that the water quality in the aquifer
be representative of the overlying land use.
Prior to sample collection and onsite measurements, at least two well volumes of water were
pumped. Water samples were collected and preserved using U.S. Geological Survey
standard procedures.
Results and Conclusions
Of the 42 organic compounds for which analyses were conducted, only 2,4-D, atrazine, and
propazine were detected. The most prevalent pesticide was the herbicide 2,4-D, which was
detected in 23 samples. Atrazine was the next most common pesticide detected, occurring
in 2 samples, followed by propazine which was detected in 1 sample. Of the three pesticides
detected, none were found in concentrations exceeding the U.S. EPA's Drinking Water
Standards and Health Advisories.
A statistical summary of data collected supported the concept that ground water beneath
nonirrigated land is affected less by the overlying land use than ground water beneath
irrigated land. This was the case for every constituent analyzed for, except 2,4-D and
ammonia. Concentrations of atrazine and sodium found in samples from an irrigation well
supported the premise that water-level drawdown develops under irrigated fields, diverting
the natural ground-water flow patterns and that water well pumpage may cause recycling
and a subsequent concentration of leachates from the land surface.
7-KS-7
-------
Intentionally Blank Page
-------
PESTICIDE SMTIING IN THE STATE OF KANSAS
2,4-0 to Cyprazine



WELL RESULTS
SAMPLE RESULTS
RANGE 01
CQtiCES-
!RATIONS
PESTICIDE
COUNTY
DATE
TOTAL
WELLS
SAHPLE8
# OF
POSITIVE
HELLS
TOTAL #
SAMPLES
i of
POSITIVE
SAMPLES

*
YCAS/MOKT*

RCL
<
KCL

£
HCL
MCt

AK0E6SW
1986/2
1
0
0
1
0
0


ATCHISON
1987/12
2
D
0
2
0
0


8A88£R
1986/2
2
0
0
2
0
0


SAHTOti
1984/9
2
0
2
2
0
2
0.01

8R0WN
1986/2
2
0
0
2
0
0



1987/12
10
0
0
10
0
0


BUTLER
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


CRAVTAUCUA
1986/2
2
0
0
2
0
0


CHEROKEE
1986/2
2
0
0
2
0
0



1987/12
6
0
0
4
0
0


CLAY
1986/2
2
0
0
2
0
0



1987/12
3
0
0
3
0
0


CLOUD
1986/2
2
0
0
2
0
0


COFFEE
1987/12
1
0
0
1
0
0


COWLEY
1986/2
2
a
0
2
0
0



1987/12
1
0
0
1
0
0


CRAWFORD
1987/12
1
0
0
1
0
0


oecA na
1986/2
2
0
0
2
0
0


DICKINSON
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


DOKIPKA*
1987/12
3
0
0
3
0
0


DOUGHS
1986/2
2
0
0
2
0
0


EOUARDS
1984/9
12
0
11
12
0
11
0.01-0.05

Eli IS
1986/2
2
0
0
2
0
0


ELiSUORTH
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0


FORO
1986/2
2
0
0
2
0
0


FRAHKLIM
1987/12
1
0
0
1
0
0

7-KS-9
-------
PESTICIDE SAMPLING IN THE STATE Of KANSAS
2,4-D to Cypraiine



UELl RESULTS
SAMPLE RESULTS
RANGE Of
CONCEH-
THATIONS
PESTIttPE
COU»Tf
DATE
TOTAL
WEU6
s<«ma
# OF
POSITIVE
UEU.S
TOTAL i
SAMPLES
* OF
POSITIVE
SAMPLES


YCM/KCMT#

I
KCl
-4
*CL

*
KCL
*
Ma
(2,4-D)
6EARY
1986/2
2
0
0
2
0
0


8RAKT
1986/2
2
0
0
2
0
0


fiDECMWOOO
1986/2
2
0
0
2
0
0


KJttPER
1987/12
1
0
0
1
0
0


«ARVCY
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


~OTGEUAY
1986/2
2
0
0
2
0
0


JACKSON
1986/2
2
0
0
2
0
0


JEFFERSON
1987/12
5
0
0
5
0
0


JEUEtL
1986/2
2
0
0
2
0
0


RING*AH
1986/2
2
0
0
2
0
0


twe	
1986/2
2
0
0
2
0
0


LEAVENWCSTH
1987/12
6
0
0
6
0
0


IINCOIM
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


trm
1986/2
2
0
0
2
0
0


nmsm
1986/2
2
0
0
2
0
2



1987/12
2
0
0
2
0
0


HASSKAiL
1986/2
4
0
0
4
0
0



1987/12
2
0
0
2
0
0


MCPHERSON * S
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0


MtAHJ
1987/12
4
0
0
4
0
0


MORTON
1986/2
2
0
0
2
0
0


mmm
1987/12
7
0
0
7
D
0


NEOSHO .
1986/2
2
0
2
2
0
Q



1987/12
2
0
0
2
0
0


OSAGE
1986/2
2
0
0
2
0
0



1987/12
3
0
0
3
0
0

7-KS-lO
-------
PESTICIDE SAMPLING IN THE STATE OF KANSAS
2,4-0 to Cyprazine



WELL RESULTS
SAHPLE RESULTS -
ftANGE m •
CONCEN-
TRATIONS

OTTHtfA
1986/2
2
0
0
2
0
0



1987/12
7
0
0
7
0
0


fJlWttE
1984/9
6
0
3
6
0
3
0.02-0.04

PHILLIPS
1986/2
2
0
0
2
0
0


POTTAWATOMIE
1987/12
6
0
0
6
0
0


PRATT
1986/2
2
0
0
2
D
0


KAWL1HS
1986/2
2
0
0
2
0
0


KENO
1986/2
2
0
0
2
0
0


REPUBLIC
1986/2
2
0
0
2
0
0


«ice
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0


aiLEY
1987/12
1
0
0
t
0
0


ROOKS
1986/2
2
0
.0
2
0
0


- SAtlHE
1986/2
2
0
0
2
0
0


SEDGWICK
1986/2
4
0
0
2
0
0


SHERIDAN
1986/2
2
0
0
2
0
0


SMT«
1986/2
2
0
0
2
0
0


STAfK*f>
1984/9
7
0
0
7
0
0


STEVENS
1986/2
2
0
0
2
0
0


SUMSCT
1986/2
2
0
0
2
0
0


TREGO
1986/2
2
0
0
2
0
0


WABAUKSEE
1987/12
1
0
0
1
0
0


WALLACE
1987/12
2
0
0
2
0
0


WASHINGTON
1986/2
2
0
1
2
0
1
1.3

WYANDOTTE
1986/2
2
0
0
2
0
0

TOTAL DISCRETE
WELLS/SAHPLES


214
0
24
214
0
24
0.01-1.3
2.^5-T
ANOE8SOK
1986/2
1
0
0
1
0
0


BARBER
1986/2
2
0
0
2
0
0

7-KS-ll
-------
PESTICIDE SWUNG IK THE STATE Of KANSAS
2,4-D to Cyprazirw



WLL RESULTS
3WLE RESULTS
«AK6£ 01
COHCEN-
TRATJOKS

PESTICIDE
COUttT*
DATE
TOTAL
WELLS
SAMPLED
# Of
positive
WELLS
TOTAL M
SAMPLES
# Of
POSITIVE
SAMPLES


IftAR/MOfTlt

i
KCL
<
KCL

S
MCL
<
na
<2,4,5-TJ
6ART0W
1984/9 I
2
0
0
2
0
0


: BROUU
1986/2
2
0
0
2
0
0


SUTLER
1986/2
2
0
0
2
0
0


: CKAUtAUfiUA
1986/2
2
0
0
2
0
0


CKEROtCEi
1986/2
2
0
0
2
0
0


icux
1986/2
2
0
0
2
0
0


CLOU)
1986/2
2
0
0
2
0
0


:COULET
1986/2
2
0
0
2
0
0


DECATU*
1986/2
2
0
0
2
0
0


1 DICKINSON
1986/2
2
0
0
2
0
0


DOUGLAS
1986/2
2
0
0
2
0
0


iajUABOS
1984/9
12
0
0
12
0
0


:: 8LL18
1986/2
2
0
0
2
0
0


:ELtStf*TX
1986/2
2
0
0
2
0
0


fORO
1986/2
2
0
0
2
0
0


GEAR*
1986/2
2
0
0
2
0
0


SRANT
1986/2
2
0
0
2
0
0


i SSf EJWDOO
1986/2
2
0
0
2
0
0


immr
1986/2
2
0
0
2
0
0


* *OOS£*Alf
1986/2
2
0
0
2
0
0


'JACK'SW
1986/2
2
0
0
2
0
0


lieutti
1986/2
2
0
0
2
0
0


KINGMAN
1986/2
2
0
0
2
0
0


LAME
1986/2
2
a
0
2
0
0


IINCOLH
1986/2
2
0
0
2
0
0


IVOIf
1986/2
2
0
0
2
0
0


HAS10#
1986/2
2
0
0
2
0
0


: nAkS.miL
1986/2
4
0
0
4
0
0


MCPHERSON
1986/2
2
0
0
2
0
0

7-KS-12
-------
PESTICIDE SAVING III THE STATE OF KANSAS
2,4-0 to Cyprazine



WEU 8E5ULTS
SAMPLE RESULTS
SAUCE Of
COH CAS-
TRATIONS

PEST1CJBE
COlKTf
CATE
TOTAt
1CL1S
SAMPLED
#0F
posmvs
WELLS
TOTAL 4
SAMPLES
« Of
POSITIVE
SAMPLES


VEAR/MONTH

I
PKt
«
WCL

I
HCL
Ma
<2,4,S-T)
MOKTOK
1986/2
2
0
0
2
0
0


HE05H0
1986/2
2
0
0
2
0
0


OSAGE
1986/2
2
0
0
2
0
0


OTTAWA
1986/2
2
0
0
2
0
0


PAWNEE
1984/9
6
0
0
6
0
0


PHllUPS
1986/2
2
0
0
2
0
0


PRATT
1986/2
2
0
0
2
0
0


RAWUHS
1986/2
2
0
0
2
0
0


REMO
1986/2
2
0
0
2
0
0


S1EPU8L1C
1986/2
2
0
0
2
0
0


RICE
1986/2
2
0
0
2
0
0


soars
1986/2
2
0
0
2
0
0


SAUKE
1986/2
2
0
0
2
0
0


SEDGVICIT
1986/2
4
0
0
4
0
0


SHER'^AK
1986/2
2
0
0
2
0
0


SMITH
1986/2
2
0
0
2
0
0


STAFFORD
1984/9
7
0
0
7
0
0


STEVENS
1986/2
2
0
0
2
0
0


SUMNER
1986/2
2
0
0
2
0
0


TREGO
1986/2
2
0
0
2
0
0


WA1LACE
1986/2
2
0
0
, 2
0
0


UASHJ(f(STQ*
1986/2
2
0
1
2
0
1
1.1

.. WYANDOTTE
1986/2
2
0
0
2
0
0

TOTAl discrete
WELLS/SAMPLES


107
0
1
107
0
1
1.1
2,4,5-TP
(SUvm)
Ahdenon
1986/2
1
0
0
1
0
0


Barber
1986/2
2
0
a
2
0
0


Barton
1984/9
2
0
0
2
0
0


Brown
1986/2
2
0
0
2
0
0

7-KS-13
-------
PESTICIDE SMFLING IN THE STATE OF KANSAS
2,4-D to Cypraxine



VEIL KE5ULTS
SAHPLE RESULTS
KAliGE Of
COHCEK-
TRAT JONS
(P3/1)
PEST It IDE
COURT*
DATE
TOTAL
WELLS
sample®
# Of
POSITIVE
WLLS
TOTAL #
SABLES
* Of
POSITIVE
SAMPLE?


YEAS/WOHT#

*
*a
«L

*
HCL
<.
KCt
<2,4,5-TP}
Butler
1986/2
2
0
0
2
0
0


Cheutsuqus
1986/2
2
0
0
2
0
0


Cherokee
1986/2
2
0
0
2
0
0


GUy
1986/2
2
0
0
2
0
0


CtoaS
1986/2
2
0
0
2
0
0


Center
1986/2
2
0
0
2
0
0


Decstur
1966/2
2
0
0
2
0
0


McMnson
1986/2
2
0
0
2
0
0


Douglas
1986/2
2
0
0
2
0
0


Edwards
1984/9
12
0
0
12
0
0


E11 i*
1986/2
2
0
0
2
0
0
-

Ellsworth
1986/2
2
0
0
2
0
0


Ford
1986/2
2
0
0
2
0
0


Geary
1986/2
2
0
0
2
0
0


Gram
1986/2
2
0
0
2
0
0


Greenwood
1986/2
2
0
0
2
0
0


flarv*y
1986/2
2
0
0
2
0
0


Hodgeman
1986/2
2
0
0
2
0
0


Jackson
1986/2
2
0
0
2
0
0


Jewel I
1986/2
2
0
0
2
0
0


Kingman
1986/2
2
0
0
2
0
0


lane
1986/2
2
0
0
2
0
0


Lincoln
1986/2
2
0
0
2
0
0


lyon
1986/2
2
0
0
2
0
0


Marion
1986/2
2
0
0
2
0
0


Marvel I
1986/2
4
0
0
4
0
0


HePhersoft
1986/2
2
0
0
2
0
0


Morton
1986/2
2
0
D
2
0
0


Neosho
1986/2
2
0
0
2
0
0


Ofta^e
1986/2
2
0
0
2
0
0


OttftWB
1986/2
2
0
0
2
0
0


Pawnee
1984/9
6
0
0
6
0
0


¦PMUips
1986/2
2
0
0
2
0
0

7-KS-14
-------
FEST1UDE SMPLING IN THE STATE OF KANSAS
2,4-D to Cypriiine



UEL1 JESUITS
SAMPLE RESULTS
fiAJISS Of
COSCEH-
? RATIONS

PE5TIC5DE
ecu (fir
DATE
TOTAL
WELLS
SAtfPLEfl
# OF
POSITIVE
WE LAS
TOTAL #
SAMPLES
# Of
POSITIVE
SAMPLES


"YEAS/MOUTH

I
KCl
<
XCL

5
tCL
<
HCL
C2.4.5-TP)
Prett
1986/2
2
0
0
2
0
0


ftstfUut
1986/2
2
0
0
2
0
0


8 too
1986/2
2
0
0
2
0
0



1986/2
2
0
0
2
0
0


KfC*
1986/2
2
0
0
2
0
0


Hook'*
1986/2
2
0
0
2
0
0


SaUr*
1986/2
2
0
0
2
0
0


teds»lcfc
1986/2
4
0
0
2
0
0


Sheridan
1986/2
2
0
0
2
0
0


Smith
1986/2
2
0
0
2
0
0


Stafford
1984/9
7
0
0
7
0
0


Stevens
1986/2
2
0
0
2
0
0


Sutoer
1986/2
2
0
0
2
0
0


Tr«30
1986/2
2
0
0
2
0
0


Uatlace
1986/2
2
0
0
2
0
0


IfosMngton
1986/2
2
0
0
2
0
0


:Uyar\dott«
1986/2
2
0
0
2
0
0

TOTAL DISCRETE
wells/samples


107
0
0
107
0
0

:Alachlor
ANDERSON
1986/2
2
0
0
2
0
0


ATCHISON
1987/12
2
0
0
2
0
0


fiARBER
1986/2
2
0
0
2
0
0


BARTOW
1984/9
2
0
0
2
0
0


BROWN
1986/2
2
0
0
2
0
0



1987/12
10
0
0
10
0
0


SUTLER
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


CHAUTAUGUA
1986/2
2
0
0
2
0
0


CHEROKEE
1986/2
2
0
0
2
0
0



1987/12
4
0
0
4
0
0


CLAf
1986/2
2
0
0
2
0
0



1987/12
3
0
0
3
0
0


CLOUD
1986/2
2
0
0
2
0
0

7-KS-15
-------
PESTICIDE SAMPLING IM THE STATE OF KANSAS
2,4-D to Cyprazfne



yen results
SAMPLE RESULTS
SAM* Of ..
cascsN- —
TRATIONS
resTicice
COURT r
wte
TOTAL
UEUS
SAMPLED
# OF
POSITIVE
«eus
TOTAL #
SAMPLES
f Of
POSITJVC
SAMPLES


TIAR/MOUTK

i
PKL
<
*cl

2
KCL
»a
(Alachlor)
COFfEE
1987/12
1
0
0
1
0
0


tOWLEr
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0


CRAWfORD
1987/12
1
0
0
1
0
0


DECATUR
1986/2
2
0
0
2
0
0


OICK1HSOM
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


DONTPKAK
1987/12
3
0
0
5
0
0


DOUGLAS
1986/2
2
0
0
2
0
0


ESUAWS
1984/9
12
0
0
12
0
0


ELLIS
1986/9
2
0
0
2
0
0


ELLSWORTH
1986/2
2
0
0
2
0
0


ELLSWORTH
1987/12
1
0
0
1
0
0


nm
1986/2
2
0
0
2
0
0


FRANKLIR
1987/12
1
0
0
1
0
0


GEART
1986/2
2
0
0
2
0
0


8RART
1986/2
2
0
0
2
0
0


SftEEMWOeO
1986/2
2
0
0
2
0
0


KAtiPEft
1987/12
1
0
0
1
0
0


#ARVET
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


HOOGEKAW
1986/2
2
0
0
2
0
0


JACKSON
1986/2
2
0
0
2
0
0


JEFfERSON
1987/12
5
0
0
5
0
0


«UEIL
1986/2
2
0
0
2
0
0


KtNGHAH
1986/2
2
0
0
2
0
0


tANE
1986/2
2
0
0
2
0
0


LEAVEhUtRTH
1987/12
6
1
0
6
1
0
2.4

LtNCOLK
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


LYOH
1986/2
2
0
0
2
0
0


KAlfOK
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0

7-KS-16
-------
2,4-& to Cyprazirw
1


WEIL RESULTS
: SAMPLE RESULTS
RA14GE Of
co*c«-
TRATIONS
(P9/l>
PESTIC50E
COJ8TY
DATE
TOTAL
UEUS
SAMPLEO
* OF
postrrvf
WEU-S
TOTAL f
SAMPLES
# Of
POSITIVE
SAHPLE5


TEAS/MONTH

i
Ma
4
NCL

£
NCL
4
*CL
CAleehlor)
SHALL
1986/2
4
0
0
4
0
0



1987/12
2
0
0
2
0
0


XCf>t«R50«
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0


Mim
1987/12
4
0
0
4
0
0


HORTO#
1986/2
2
0
0
2
0
0


XENU«A
1987/12
7
0
0
7
0
0


HEOSHO
1986/2
2
0
1
2
0
1
0.88


1987/12
2
1
0
2
1
0
2.4

OSAcS
1986/2
2
0
0
2
0
0



1987/12
3
0
0
3
0
0


OTTAWA
1986/2
2
0
0
2
0
0



1987/12
7
0
0
7
0
0


PAWHEE
1984/9
6
0
0
6
0
0


PBJLUPS
1986/2
2
0
0
2
0
0


POTTAUATONIE
1987/12
6
0
0
6
0
0


PRATT
1986/2
2
0
0
2
0
0


RaultUs
1986/2
2
0
0
2
0
0


ftEMO
1986/2
2
0
0
2
0
0


REPUBLIC
1986/2
2
0
0
2
0
0


RICE
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0


RfiEY
1987/12
1
0
0
1
0
0


feCOKS
1986/2
2
0
0
2
0
0


SAI1NE
1986/2
2
0
0
2
0
0


SEDW.'CK
1986/2
4
0
0
4
0
0


SH6R13 AW
1986/2
2
0
0
2
0
0


SKiTH
1986/2
2
0
0
2
0
0


STAFFORD
1984/9
7
0
0
7
0
0


STEVENS
1986/2
2
0
0
2
0
0


SUMNER
1986/2
2
0
0
2
0
0


TREGO
1986/2
2
0
0
2
0
0


WABAUNSEE
1987/12
1
0
0
1
0
0

7-KS-17
-------
PESTICIDE SAMPLING IN THE STATE OF KANSAS
2,4-0 to Cypraxln*



WELL RESULTS
SAHPLE RESULTS
ftAUGE Of
coac«-
T RATIONS

PESTICIDE
COURT*
DATE
TOTAt
UEUS
SAMPLED
# Of
POSITIVE
WELLS
TOTAL #
SAMPLES
# Of
POSITIVE
SAMPLES


YEAS/KOMI#

I
KU
4
#CL

i
MCL
<
HCL
-------
PESTICIDE SAMPLING IN THE STATE Of KANSAS
2,4-D to Cypraiine



WEIL SESULTS
SAMPLE RESULTS
JtA*G£ o#
CONCEN-
TRATIONS
PESTICIDE
COUKTT
- DATE
TOTAt
t£Lt.S
SAMPLES
# rs
1986/2
2
0
0
2
0
0


8E«0
1986/2
2
0
0
2
0
0


WSPU3LIC
1986/2
2
0
0
2
0
0


atcE
1986/2
2
0
0
2
0
0


ROOKS
1986/2
2
0
0
2
0
0


SAITNE
1986/2
2
0
0
2
0
0


SEDGWICK
1986/2
4
0
0
4
0
0


SHERIOA#
1986/2
2
0
0
2
0
0


suns
1986/2
2
0
0
2
0
0


STAf TORD
1984/9
7
0
0
7
0
0


STEVEWS
1986/2
2
0
0
2
0
0


SOHHER
1986/2
2
0
0
, 2
0
0


TREGO
1986/2
2
0
0
2
0
0


WAllACE
1986/2
2
0
0
2
0
0


WASK1HGTOK
1986/2
2
0
0
2
0
0


WYAHDOITE
1986/2
2
0
0
2
0
0

TOTAL DISCRETE
WEILS/SAMPLES


130
0
0
130
0
0

: ;Ametryri
8ARTOK
1984/9
2
0

2
0
0


EOWflftOS
1984/9
12
0
0
12
0
0


PAWNSE
1984/9
6
0
0
6
0
0


STAFFORD
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
UELLS/SAMPLES


27
0
0
27
0
0

7-KS-19
-------
PESTICIDE SAMPLING 1H THE STATE OF KANSAS
2,4-D to Cypraifne



VEU RESULTS
SAMPLE RESULTS
ItMiCZ 01
owcttt-
TttATlOMS

«rrfci£ie
caw*
date
TQTAl
UEUS
SAKPlEf)
f Of
POSITIVE
«US
total i
SAMPLES
* Of
POSITIVE
sakples


TEAR/WOHT#

I
ftCi.
4,
ttCL

2
KCL
act
Atraton
BARTON
1984/9
2
0
0
2
0
0


SHMM*
1984/9
12
0
0
12
0
0


WWHff
1984/9
6
0
0
6
0
0


STAfFCRD
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


27
0
0
27
0
0

At ratine
AH&EftSOB
1986/2
1
0
0
1
0
0


fiAfiKR
1986/2
2
0
0
2
0
0


¦$mw
1984/9
2
0
0
2
0
0


*8 ROW
1986/2
2
0
0
2
0
0


:;;K3TlfR
1986/2
2
0
0
2
0
0


-CHAyTAUBJA
1986/2
2
0
0
2
0
0


ICHSRCMOEr
1986/2
2
0
0
2
0
0


CLAT
1986/2
2
1
0
2
1
0
3,4

;'CLaa
1986/2
2
0
0
2
0
0


COWLEY
1986/2
2
0
0
2
0
0


¦0ECATV*
1986/2
2
1
0
2
1
0
7.4

DICKiKSOT
1986/2
2
0
0
2
0
0


DOUGtAS
1986/2
2
0
0
2
0
0


EDWARDS
1986/9
12
0
0
12
0
0


ELUS
1986/2
2
0
0
2
0
0


EUSWORT*
1986/2
2
0
0
2
0
0


PORD
1986/2
2
0
0
2
0
0


SEAR*
1986/2
2
0
0
2
0
0


GRANT
1986/2
2
0
0
2
0
0


GREENWOOD
1986/2
2
0
0
2
0
0


KARVET
1986/2
2
0
0
2
0
0


WPGEMAH
1986/2
2
0
0
2
0
0


JACKSON
1986/2
2
1
0
2
1
0


JEUFtL
1986/2
2
0
0
2
0
0


SfNGMAN
1986/2
2
0
0
2
0
0


LAKE
1986/2
2
0
0
2
0
0


Lincoln
1986/2
2
0
0
2
0
0

7-KS-20
-------
PESTICIDE SAMPLING IN THE STATE OF KANSAS
2,4-0 to Cypraiine



WELL RESULTS
SAMPLE RESULTS
RANGE Of
CONCEN*
TRATIOWS
-------
PESTICIDE SAMH.ING IN THE STATE OF KANSAS
2,4-D to Cypraiine
-
'

Vtll SESULTS
SAMPLE RESULTS
MJtfiE Of
CONCES- :
Twncws
PESTICIDE
COURT If
0AT6
TOTAL
miis
SAMPLED
# OF
POSITIVE
«US
TOTAL f
SAMPLES
f Of
POSITIVE
samples


YEAR/MONTH

. 1
KCL
KCL

"S
<
(Carbofuran)
PAUSEF
1984/9
6
0
0
6
0
0


STAfFOfiO
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


27
0
0
2?
0
0

Carbopherw-
• th1 on
Barton
84/9
2
0
0
2
0
0


Edwsrcfc
84/9
12
0
0
12
0
0


Pownwi
84/9
6
0
0
6
0
0


Stafford
84/9
7
0
0
7
0
0

TOTAL DISCRETE
WILLS/SAMPLES


27
0
0
27
0
0

Carbopheno-
: tHionr;methyl--
Barton
1984/9
2
0
0
2
0
0


Edward#
1984/9
12
0
0
12
0
0


Pawnee
1984/9
6
a
0
6
0
0


:Stafford
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


27
a
0
27
0
0

Chlordar*
ANDESSCtt
1986/2
1
0
0
1
0
0


ATCHISO*
1986/12
2
0
0
2
0
0


BARBER
1986/2
2
0
0
2
0
0


SARTOti '
1984/9
2
0
0
2
0
0


BROWN
1986/2
2
0
0
2
0
0



1987/12
10
0
0
10
0
0


SUTLER
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


CHAUTAUGUA
1986/2
2
0
0
2
0
0


CHEROKEE
1986/2
2
0
0
2
0
0



1987/12
4
0
0
4
0
0


CLAr
1986/2
2
0
0
2
0
0



1987/12
3
0
0
3
0
0


CLOUD
1986/2
2
0
0
2
0
0


COFFEY
1987/12
1
0
0
1
0
0

7-KS-22
-------
PESTICIDE SAHPL1HG IH THE STATE OF KMSAS
2,4-0 to Cyprezine



VEU. KE5ULT5
SAMPLE RESULTS
RANGE 01
COHCES-
T RATIONS
PESTfCjM
COUJrTY
DATE
TOTAL
UeUS
SA*Pitt)
0 Of
POSITIVE
vsu.5
70TAI #
SAMPltS
f Of
POSITiVE
SAMPLES


YEA8/H0NTH

I
*Ci
<
HCL

J
«CL
<
ttCL
(Chlordane)
cowur
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0


CSAVKS9
1987/12
1
0
0
1
0
0


DECAHS
1986/2
2
0
0
2
0
0


MCttNSO#
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


DOHPHA#
1987/12
3
0
0
3
0
0


DOUGHS
1986/2
2
0
0
2
0
0


KJWATOS
1984/9
12
0
0
12
0
0


fttts
1986/2
2
0
0
2
0
0


SLtSwmW
1986/2
2
0
0
2
0
0



1987/2
1
0
0
1
0
0


POftfr '
1986/2
2
0
0
2
0
0


FRAKJCLIK
1987/12
1
0
0
1
0
0


CEART
1986/2
2
0
0
2
0
0


SRANT
1986/2
2
0
0
2
0
0


GRfEHUOCC
1986/2
2
0
0
2
0
0


HARPER
1987/12

0
0
1
0
0


nmtti
1986/2
2
D
0
2
0
0



1987/12
2
0
0
2
0
0


MOD G£ HAW
1986/2
2
0
0
2
0
0


¦JACKSON
1986/2
2
0
0
2
0
0


¦JEFfERSDN
1987/12
5
0
0
5
D
0


¦JEWEtl
1986/2
2
0
0
2
0
0


KINGMAN
1986/2
2
0
0
2
0
0


lAkt
1986/2
2
0
0
2
0
0


UAVEKWORIH
1987/12
6
0
0
6
0
0


i TKCOLK
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


LYOH
1986/2
2
0
0
2
0
0


MARION
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


KAftSHAtL
1986/2
4
0
0
4
0
0



1987/12
2
0
0
2
0
0

7-KS-23
-------
PESTICIDE SWUNG IN THE STATE OF KANSAS
2,4-0 to Cyprazirie



wu.
SESOLTS
SAMPLE RESULTS
	—.*.im
PESTICIDE
COUttTr
DATE
TOTAL
UEUS
SAMPLED
# OF
POSITIVE
weus
7QTAI i
SAMPLES
1 Of
POSITIVE
SAMPLES
RAH fit Of
COM CEN-
TRA T 10WS


YEAR/MONT#

I
#Ci
<
XCL

S
MCI
•*
Ma

(Chiorda re)
KCPKERSOK
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0



1987/12
4
1
0
4
1
0
7.9

HOC T OK
1986/2
2
0
0
2
0
0


NEMAHA
1987/12
7
0
0
7
0
0


NEOSHO
1986/2
2
0
1
2
0
i
0.47


1987/12
2
1
0
2
1
0
7.9

OSA&E
1986/2
2
0
0
2
0
0



1987/12
3
1
0
3
1
0
7.9

OTTAWA
1986/2
2
0
0
2
0
0



1987/12
7
0
0
7
0
0


PAWVEE
1984/9
6
0
0
6
0
0


PHILLIPS
1986/2
2
0
0
2
0
0


POTTAWATOMIE
1987/12
6
0
0
6
0
0


PRATT
19B6/2
2
0
0
2
D
0


RAWLINS
1986/2
2
0
0
2
0
0


REVO
1986/2
2
0
0
2
0
0


ftPPUSUC
1986/2
2
0
0
2
0
0


MCE
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0


RILEY
1987/12
1
0
0
1
0
0


ROOKS
1986/2
2
0
0
2
0
0


SALINE
1986/2
2
0
0
2
0
0


SEDGWICK
1986/2
4
0
0
4
0
0


SHERI0A#
1986/2
2
0
0
2
0
0


5H!T«
1986/2
2
0
0
2
0
0


STArttfcC)
1984/9
7
0
0
7
0
0


STevens
1986/2
2
0
0
2
0
0


SUKh'ER
1986/2
2
0
0
2
0
0


TREK)
1986/2
2
0
0
2
0
0


tfABAUKSER
1987/12
1
0
0
1
0
0


WALLACE
1986/2
2
0
0
2
0
0

7-KS-24
-------
PESTICIDE SAJVUIG III THE STATE OF KANSAS
2,4-D to Cyprazine



WEIL RESULTS
SAMPLE RESt&TS
RANGE Of
CONCEN-
TRATIONS
PESTICfDE
CQUKTY
DATE
TOTAL
mis
SAKPLfcD
* OF
wsirm
¦WEU.S
TOTAL #
SABLES
# Of
POSITIVE
SAMPLES
'

YEAR/MOIiTH

i { «
*U } #CL

"2
MCI
*
wet
(Chlordarve)
WASHJIKTOr
1986/2
2
0 0
2
0
0


WYAKDOTtE
1986/2
2
o I 0
2
0
0

TOTAL DISCRETE
WELLS/SAMPLES


2H
3 | 1
214
3
1
0.47-7.9
• CyansiJf*
BAfiTOS •:
1984/9
2
0
0
2
0
0


EOUAWS
1964/9
12
0
0
12
0
0


PAUNEE
1984/9
6
0
0
6
0
0


STAfFCftO
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAHPLES


27
0
0
27
0
0


8ASTCM
1984/9
2
0
0
2
0
0


EDWARDS
1984/9
12
0
0
12
0
0


PAWNEE
1984/9
6
0
0
6
0
0


STAFFORD
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
WEILS/SAMPLES


27
0
0
27
0
0

7-KS-25
-------
PESTICIDE SMCH.1NG IH THE STATE OF KANSAS
DCPA to Heptachlor Epoxide



WELL RESULTS
UIKE RESULTS
RAMS: OF
Ct*C£H-
TRAnaas
(KO/O
PESTICIDE
COUKTY
BATE
total
HELLS
SAKPLEC
* OF
positive:
WELLS
total #
SAMPLES
* OF
positive
samples


YEAR/
MONTH

t
<
HCL

	*»/ I
"21
<
MCI
©CPA
ANDE8SOK
1986/2
1
0
0
1
0
0


BARBER
1986/2
2
0
0
2
0
0


BROUN
1986/2
2
0
0
2
0
0


8MTLER
1986/2
2
0
0
2
0
0


: CHAtlTAUGUA
1986/2
2
0
0
2
0
0


CHEROKEE
1986/2
2
0
0
2
0
0


CI AY
1986/2
2
0
0
2
0
0


tLouo
1986/2
2
0
0
2
0
0


cowtit
1986/2
2
0
0
2
0
0


DECATUR
1986/2
2
0
0
2
0
0


MCmSON
1986/2
2
0
0
2
0
0
-

&OUGIAS
1986/2
2
0
0
2
0
0


ELLIS
1986/2
2
0
0
2
0
0


fiimmin
1986/2
2
0
0
2
0
0



1986/2
2
0
0
2
0
0


¦SEARY
1986/2
2
0
0
2
0
0


:
-------
PESTICIDE SAWLtHO 1H THE STATE OF KANSAS
DCPA to Keptaehlor Epoxide
,


WEIL RESULTS
SAMPLE RESULTS
ftAUGE Of
COdCER-
mn«is
pesticide
cawr
OA7E
TOT Jit
WEILS
SAHPLE0
# Of
3>OSITIVS
W£iL$
TQ7*L #
SAMPLES
# OF
POSITIVE
SAMPLES


YEAR/
KWTH

h
MCL
<
XCl

*
net
<
ips/i)
(OCPA)
ftORTOK
1986/2
2
0
0
2
0
0


NEOSHO
1986/2
2
0
a
2
0
0


OSAGE
1986/2
2
0
0
2
0
0


OTTAWA
1986/2
2
0
0
2
0
0


PKILilPS
1986/2
2
0
0
2
0
0


PRATT
1986/2
2
0
0
2
0
0


RAMIIKS
1986/2
2
0
0
2
0
0


8EH0
1986/2
2
0
0
2
0
0


REPUBLIC
1986/2
2
0
0
2
0
0


SICE
1986/2
2
0
0
2
0
0


ROCKS
1986/2
2
0
0
2
0
0


SAUNE
1986/2
2
0
0
2
0
0


SEDGWICK
1986/2
4
0
0
4
0
0


SHERIDAM
1986/2
2
0
0
2
0
0


SMITH
1986/2
2
0
0
2
0
0


STEVEHS
1986/2
2
0
0
2
0
0


SUMNER
1986/2
2
0
0
2
0
0


TREGO
1986/2
2
0
0
2
0
0


WALLACE
1986/2
2
0
0
2
0
0


mSHJMGTOtf
1986/2
2
0
0
2
0
0


WYAfcDOTTE
1986/2
2
0
0
2
0
0

TOTAL DISCRETE
WE LI5/SAMPLES


103
0
0
103
0
0

DDT*
AHDERSOU
1986/2
1
0
0
1
0
0


; BARBER
1986/2
2
0
0
2
0
0


BARTOK
1984/9
2
0
0
2
0
0


8ROWV
1986/2
2
0
0
2
0
0


etTUER
1986/2
2
0
0
2
a
0


CHAU7AU0UA
1986/2
2
0
0
2
0
0


CHEROKEE
1986/2
2
0
0
2
0
0


CLAlf
1986/2
2
0
0
2
0
0


::eiewo
1986/2
2
0
0
2
a
0


:COULE»
1986/2
2
0
0
2
0
0

7-KS-27
-------
PESTICIDE SAW I KG III THE STATE Of KANSAS
DCPA to Heptachlor Epoxide



, "WEU. KESW.TS
SAMPLE RESULTS
RAMOS Of
COHCER-
TRATIOtfS
PESncipe
COUHTY
DATE
TOTAL
WELLS
8ANPLIP
f Of
wsmvE
yttts
TOTAL *
SAKPLE3
* OF
ftwrnvf
SAMPLES


year/
MOMTH

. i
MCL
<
*CL

t
HCt

tODT)
OECATUK
1986/2
2
0
0
2
0
0


MCKIWSOM
1986/2
2
0
0
2
0
0


OOUQUS
1986/2
2
0
0
2
0
0


K*tt*OS
198-4/9
12
0
0
12
0
0


ELLIS
1986/2
2
0
0
2
0
0


ELLSWORTH
1986/2
2
0
0
2
0
0


fORD
1986/2
2
0
0
2
0
0


GEARY
1986/2
2
0
0
2
0
0


CRANT
1986/2
2
0
0
2
0
0


CREEVWOOO
1986/2
2
0
0
2
0
0


HASVEY
1986/2
2
0
0
2
0
0


WJOGEMAff
1986/2
2
0
0
2
0
0


¦JACKS0#
1986/2
2
0
0
2
0
a


JEWELL
1986/2
2
0
0
2
0
0


JCtN&tAN
1986/2
2
0
0
2
0
0


UNE
1986/2
2
0
0
2
0
0


UNCOlW
1986/2
2
0
0
2
0
0


iron
1986/2
2
0
0
2
0
0


KABiOtf
1986/2
2
0
0
2
0
0


MARSHALL
1986/2
4
0
0
4
0
0


HCPIfESSC#
1986/2
2
0
0
2
0
0


MORTOK
1986/2
2
0
0
2
0
0


NEOSHO
1986/2
2
0
0
2
0
0


OSAGf
1986/2
2
0
0
2
0
0


OTTAV*
1986/2
2
0
a
2
0
0


PAWNtE
1984/9
6
0
0
6
0
0


PlfllUPS
1986/2
2
0
0
2
0
0


PRAT?
1986/2
2
0
0
2
0
0


BAWL Tl«
1986/2
2
0
0
2
0
a


RENO
1986/2
2
0
0
2
0
0


REPUBLJC
1986/2
2
0
0
2
0
0


fitCE
1986/2
2
0
0
2
0
0


ROOK'S
1986/2
2
0
0
2
0
0

7-KS-28
-------
PESTICIDE SAMPLING IN THE STATE OF KANSAS
DCPA to Heptachlor Epoxide



ME LI RESULTS
SAMPLE RESULTS
		 in., ,1 nil.,
«AJiG£ Of
CONCEN-
TRATIONS
(W/l)
pesticide
COWfTV
DATE
TOTAL
WELLS
€AWLEft
# Of
POSJTfVS
WELLS
TOTAL *
SAMPLES
# Of
POSITIVE
SAMPLES


YEAR/
HOXTH

fc
Ma
<
xa

e
Ha
<
Ma
(DDT)
SALJWE
1986/2
2
0
0
2
0
0


SEDGWICt
1986/2
4
0
0
2
0
0


SKtlUfiAN
1986/2
2
0
0
2
0
0


SHT#
1986/2
2
0
0
2
0
0


STAFFORD
1984/9
7
0
0
7
0
0


STEVENS
1986/2
2
0
0
2
0
0


SUMtiER
1986/2
2
0
0
2
0
0


TR£W>
1986/2
2
0
0
2
0
0


WALLACE
1986/2
2
0
0
2
0
0


WASttJ MCTOkt
1986/2
2

0
2
0
0


• WYANDOTre
1986/2
2
0
0
2
0
0

TOTAL DISCRETE
WEILS/SAMPLES


130
0
0
130
0
a


8ASTCU
1984/9
2
0
0
2
0
0


,EDWARDS
1984/9
12
0
0
12
0
0


PAVKEE
1984/9
6
0
0
6
0
0


STAFFORD
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


27
0
0
27
0
0

doe ::
BA*TC»
1984/9
2
0
0
2
0
0


EBWASDS
1984/9
12
0
0
12
0
0


PAWNEE
1984/9
6
0
0
6
0
0


STAFFORD
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
HELLS/SAMPLES


27
0
0
27
0
0

DIarin&n
BARTON
1984/9
2
0
0
2
0
0


EOWASDS
1984/9
12
0
0
12
0
0


- PAWNEE
1984/9
6
0
0
6
0
0


STAFFED
1984/9
7
D
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


27
0
0
27
0
0

Dfchtorprop
BARTON
1984/9
2
0
0
2
0
0


: EDWARDS
1984/9
12
0
0
12
0
0

7-KS-29
-------
PESTICIDE SAMPLING IH TIE STATE OF KANSAS
DCPA to Heptachlor Epoxide
1


WELL KESULTS
SAMPLE RESULTS
ftjUJGf 0?
COKCfS-
TRAT IONS
...
PESTJClOfi
COUKTr
WE
TOTAL
WELLS
SAXPLEO
# OF
POSITIVE
WELLS
TOTAL *
SAMPLES
1 OF
POSITIVE
SAMPLES


?EW
MCMTK

2r
Ha
MCL

»r
MCL
<
Ha
(Diehtorprop)
| wwnee -
1984/9
6
0
0
6
0
0


|| $TAfK*D
1986/9
7
0
0
7
0
0

TOTAL DISCRETE
WEILS/SAMPLES
I

27
0
0
27
0
0

Dislcfrtn
ANDESSOH
1986/2
1
0
0
1
0
0


ATWSO*
1987/12
2
0
0
2
0
0


SASBfft
1986/2
2
0
0
2
0
0


6AHTOW
19B4/9
2
0
0
2
0
0



1986/2
2
0
0
2
0
0



1987/12
10
0
0
10
0
0


SUTLER
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


CHAUTAUGUA
1986/2
2
0
0
2
0
0


CH£ROk£f
1986/2
2
0
0
2
0
0



1987/12
4
0
0
4
0
0


ELAT
1986/2
2
0
0
2
0
0



1987/12
3
0
0
3
0
0


CLOUO
1986/2
2
0
0
2
0
0


COFFEY
1987/12
1
0
0
1
0
0


cw.fr • •
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0


CRAWFORD
1987/12
1
0
0
1
0
0


:DICAn»
1986/2
2
0
0
2
0
0


Dismsw--¦•••*•:--
1986/2
2
0
0
2
0
0


.
1987/12
2
0
0
2
0
0


BONJPHA#
1987/12
3
0
0
3
0
0


DOUGLAS
1986/2
2
0
0
2
0
0


ECWASOS
1984/9
12
0
0
12
0
0


ELLIS
1986/2
2
0
0
2
0
0


SU.SWORN4
1986/2
2
0
0
2
0
0


EliSWOSrH
1987/12
1
0
0
1
0
0


KKO
1986/2
2
0
0
2
0
0


FRAWSCLIM
1987/12
1
0
0
1
0
0

7-KS-30
-------
PESTICIDE SAMPLING IN THE STATE OF KANSAS
DCPA to Heptachlor Epoxide



WELL RESULTS
SAMPLE RESULTS
RAJiGf 0#
CONCEfl
IMTICHS :
PESTJCICE
CCUKTT
DATE
TOt AIL
UELIS
SAMPLED
« OF
POSITIVE
wtus
TOTAL *
¦SAMPLES
# Of
posruve
SAKPLE*


TEA*/
MONTH

S
Ma
<
*a

¦ 2 ¦
MCL
MCL
(Dieldrfn)
SEAR*
1986/2
2
0
0
.
0
0


SS*HT
1986/2
2
0
0
2
0
0


SREEJfWOOO
1986/2
2
0
0
2
0
0


«A8J>fR
1987/12
1
0
0
1
0
0


KAsvrr
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


HOOGEHA* ... .
1986/2
2
0
0
2
0
0


JACKSON
1986/2
2
0
0
2
0
0


4EFfEKS0N
1987/12
5
0
0
5
0
0


JEWELL
1986/2
2
0
0
2
0
0


KlHGHM
1986/2
2
0
0
2
0
0


IAHC
1986/2
2
0
0
2
0
0


iea^enworth
1987/12
6
0
0
6
0
0


LINCOLN
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


lkw
1986/2
2
0
0
2
0
0


MARION
1986/2
2
0
0
2
0
0



1987/12
2
0
1
2
0
1
0.26

MARSHALL
1986/2
4
0
0
4
0
0



1987/12
2
0
0
2
0
0


MCPHERSON 		
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0


MIAMI
1987/12
4
0
0
4
0
0


HOT TOM
1986/2
2
0
0
2
0
0


NEMAHA
1987/12
7
0
0
7
0
0


NEOSHO
1986/2
2
0
0
2
0
0



1987/12
2
0
1
2
0
1
0.26

OSAGE •
1986/2
2
0
0
2
0
0



1987/12
3
0
0
3
0
0


OTTAWA
1986/2
2
0
0
2
0
0



1987/12
7
0
0
7
0
0


PAWKEt
1984/9
6
0
0
6
0
0


PHILLIPS
1986/2
2
0
0
2
0
0

7-KS-31
-------
PESTICIDE SMVLING II THE STATE Of KANSAS
DCPA to Heptschlor Epoxide



WELL RE3&TS
SAMPLE RESULTS
RAtltt Of
CONCEN-
TRATIONS
<*nj/t>
PESTIOOE
count
DATE
TOTAL
UEUS
$Aw»i.y>
*
POSITIVE
WELLS
TOTAL #
SAMPLES
1 Of
POSITIVE
SAMPLES


#OHTH

i
m.
*a

t
«
CDieldrin)
POTTAVATOK1E
1987/12
6
0
0
6
0
0


P&ATT
1986/2
2
0
0
2
0
0


WWUUS
1986/2
2
0
0
2
0
0


*WO
1986/2
2
0
0
2
0
0


*EPU8Lie
1986/2
2
0
0
2
0
0


RICE
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0


*rtEir :'
1987/12
1
0
0
1
0
0


ROOKS
1986/2
2
0
0
2
0
0


SAttUE
1986/2
2
0
0
2
0
0


SEDGWICK
1986/2
4
0
0
2
0
0


SHER1DAK
1986/2
2
0
0
2
0
0


SMITH
1986/2
2
0
0
2
0
0


STAFFORD
1984/9
7
0
0
7
0
0


STEVENS
1986/2
2
0
0
2
0
0


SUHNER
1986/2
2
0
0
2
0
0


TREGO
1986/2
2
0
0
2
0
0


UABAJUNSEE
1987/12
1
0
0
1
0
0


- .KAtlACE
1986/2
2
0
0
2
0
0


WASHIMGTOH
1986/2
2
0
0
2
0
0


tfYAKDOTTE
1986/2
2
0
0
2
0
0

TOTAL DISCRETE
WELLS/SAMPLES


214
0
2
214
0
2
0.26
EndlosuHari . :
SARI OH
1984/9
2
0
0
2
0
0


EDWARDS
1984/9
12
0
0
12
0
0


PAWNEE
1984/12
6
0
0
6
0
0


^TA*FORD
1984/9
7
0
0
7
0
0

TOTAl DISCRETE
WELLS/SAMPLES


27
0
0
27
0
0

:->Eridosiii:fin-t
ATCH!SO(t
1987/12
2
0
0
2
0
0


8R0WM
1987/12
10
0
0
10
0
0


SUTLER
1987/12
2
0
0
2
0
0


¦! CHEROKEE
1987/12
4
0
1
4
0
1
0.062
7-KS-32
-------
PESTICIDE SAMPLING IV THE STATE Of OUiSAS
DCPA to Meptachlor Epoxide



WELL RESULTS
SAMPLE RESULTS
6A1IQE 01
COJiCES-
TKATJONS

PESTJCl&e
. .
COUUTT
MT£
total
WELLS
SAMPLED
# Of
PQSmVE
wtus
TOTAL *
SAMPLES
# Of
POSITIVE
: SAMPLES


YEA*/
MONTH

*
Ma
<
tt£L

ft
Ha :
<
ME.
(Endosulfan I)
ClAT
1987/12
3
0
0
3
0
0



1987/12
1
0
0
1
0
0


COWLEY
1987/12
1
0
0
1
0
0


CRAUrOfiB
1987/12
1
0
0
1
0
0


D1CK1KS0N
1987/12
2
0
a
2
0
0


WNtPHAK
1987/12
3
0
0
3
0
0


ELISWQ8TH
1987/12
1
0
0
1
0
0


FRAHKL1#
1987/12
1
0
0
1
0
0


MASPER
1987/12
1
0
0
1
0
0


hARVEV
1987/12
2
0
0
2
0
0


JEFFERSON
1987/12
S
0
0
5
0
0


LEAVENWORTH
1987/12
6
0
0
6
0
0


UKCOLN
1987/12
2
0
0
2
0
0


NARICM
1987/12
2
0
0
2
0
0


MARSHALL
1987/12
2
0
0
2
0
0


MCPHERSON
1987/12
1
0
0
1
0
0


MIAMI
1987/12
4
0
0
4
0
0


NEHAHA
1987/12
7
0
0
7
0
0


NEO$*Q
1987/12
2
0
a
2
0
0


OSAGE
1987/12
3
0
0
3
0
0


OTTAWA
1987/12
7
0
0
7
0
0


POTTAWATOMIE
1987/12
6
0
0
6
0
0


RfCE
1987/12
1
0
0
1
0
0


RflS¥
1987/12
1
0
0
1
0
0


WABAUKSEE
1987/12
1
0
0
1
0
0

TOTAL DISCRETE
WELLS/SAMPLES


84
0
1
84
0
1
0.062

ATCHISOK
1987/12
2
0
0
2
0
0


BflROWN
1987/12
10
0
0
10
0
0


SUTLER
1987/12
2
0
0
2
0
0


CHEROKEE
1987/12
4
0
1
4
0
1
0.031

"CLAT
1987/12
3
0
0
3
a
a


COffEY
1987/12
1
0
0
1
0
0

7-KS-33
-------
PESTICIDE SMVL1H6 IN THE STATE OF KANSAS
OCPA to Heptachlor Epoxide



WELL RESULTS
SAMPLE RESULTS
RANGE Of
CONCEN-
TRATIONS
(P9/1)
pesticips
CCUWTT
1ATE
TOTAL
: WELLS
SAitPLED
* Of
*>smve
WELLS
TOTAL $
SAMPLES
# OF
POSITIVE
SAMPLES


TEJW/
#OHTH

»
na
.<
MCI

8
•HCL
<
no.
(Endosutfan
tl)
COWLST
1987/12
1
0
0
1
0
0


CRAVFOD
1987/12
1
0
0
1
0
0


DICKINSON
1987/12
2
0
0
2
0
0


DONIPHAN
1987/12
3
0
0
3
0
0


ELLSUOftT*
1987/12
1
0
0
1
0
0


FRANKLIN
1987/12
1
0
0
1
0
0


HARPEfc
1987/12
1
0
0
1
0
0


HARVEY
1987/12
2
0
0
2
0
0


JEFfERSOM
1987/12
5
0
0
5
0
0


LEAVEKUORTH
1987/12
6
0
0
6
0
0


LINCOLN
1987/12
2
0
0
2
0
0


RARION
1987/12
2
0
0
2
0
Q


MARSHALL
1987/12
2
0
0
2
0
0


MCPHERSON
1987/12
1
0
0
1
0
0


MIAMI
1987/12
4
0
0
4
0
0


XEKAKA
1987/12
7
0
0
7
0
0


NEOSHO
1987/12
2
0
0
2
0
0


OSAGE
1987/12
3
0
0
3
0
0


OTTAWA
1987/12
7
0
0
7
0
0


P07TAVATCW1E
1987/12
6
0
0
6
0
0


sice
1987/12
1
0
0
1
0
0


RlLtY
1987/12
1
0
0
1
0
0


WAfiAUKSEE
1987/12
1
0
0
1
0
0

TOTAL DISCRETE
WELLS/SAMPLES


84
0
1
84
0
1
0.031
Endfin
ANDERSON
1986/2
1
0
0
1
0
0


BARES?
1986/2
2
0
0
2
0
0


BARTON
1984/9
2
0
0
2
0
0


BROWN
1986/2
2
0
0
2
0
0


BUTLER
1986/2
2
0
0
2
0
0


CHAUTAUSJA
1986/2
2
0
0
2
0
0


CHEROKEE
1986/2
2
0
0
2
0
0

7-KS-34
-------
PEST1CIDC SWPilNG IN THE STATE OF KANSAS
DCPA to Meptachlor Epoxide



VELi RESULTS
SAMPLE RESULTS
*AilG£ Of
COHCEK-
TRATIONS :
<)»8/t)
ptsnciae
COUKTf
OATC
TOTAL
VEILS
SAHPLHO
i of
POSITIVE
WEUS
TOTAL *
SAMPLES
# Of
POSITIVE
SAXPI.ES


TIAR/
HCWTH

t
Ma
<
«a

t
KCL
•«
Ma
(Endrin)
ClAT
1986/2
2
0
0
2
0
0


a. out)
1986/2
2
0
0
2
0
0


eowu-r
1986/2
2
0
0
2
0
0


DECATU8
1986/2
2
0
0
2
0
0


DICKittSOtf
1986/2
2
0
0
2
0
0


DOU3US
1986/2
2
0
0
2
0
0


EOUAROS
1984/9
12
0
0
12
0
0


CUTS
1986/2
2
0
0
2
0
0


ELLSWORTH
1986/2
2
0
0
2
0
0


FCKft
1986/2
2
0
0
2
0
0


fiEAfiT
1986/2
2
0
0
2
0
0


graKt
1986/2
2
0
0
2
0
0


GREENWOOD
1986/2
2
0
0
2
0
0


HARVEY
1986/2
2
0
0
2
0
0


: HODKMAH
1986/2
2
0
0
2
0
0


JACKSON
1986/2
2
0
0
2
0
0


•JEWEL 1.
1986/2
2
0
0
2
0
0


:«l«GMAN
1986/2
2
0
0
2
0
0



1986/2
2
0
0
2
0
0


(LINCOLN
1986/2
2
0
0
2
0
0


trow
1986/2
2
0
0
2
0
0


MAttOK
1986/2
2
0
0
2
0
0


MARSHALL •
1986/2
4
0
0
4
0
0


MCPHERSON
1986/2
2
0
0
2
0
0


MORTON
1986/2
2
0
0
2
0
D


NEOSHO
1986/2
2
0
0
2
0
0


OSAGE
1986/2
2
0
0
2
0
0


OTTAWA
1986/2
2
0
0
2
0
0


PAWKEE
1984/9
6
0
0
6
0
0


PHILLIPS
1986/2
2
0
0
2
0
0


PRATT
1986/2
2
0
0
2
0
0


: RAWLINS
1986/2
2
0
0
2
0
0


RENO
1986/2
2
0
0
2
0
0

7-KS-35
-------
PESTICIDE SAWIING IN THE STATE OF KANSAS
DCPA to Heptachlor Epoxide



WELL RESULTS
SAMPLE RESULTS
KAilGE OF
COH CCS
THAT ICWS

1984/9
7
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


27
0
0
27
0
0

7-KS-36
-------
PESTICIDE SANDING !¦ THE STATE OF KANSAS
DCPA to Htptachler Epoxide



WELL KESUUS
SAMPLE RESULTS
8A*G£ OF
CWCEB-
T RATIONS
(*9/1)
PESTICIDE
COUttir
DATE
TOTAL
¦ ISLIS
SAMPLE®
# Of
POSITIVE
WELLS
TOTAL #
SAMPLES
* Of
POSITIVE
SAMPLES
,

ye**/
MONTH

i
Ma
4
Kl

t
Kl
<
Ma
Heptichlor
8A*TO»
1984/9
2
0
0
2
0
0


ecsvm
1984/9
12
0
0
12
0
0


pm.unee
1984/9
6
0
0
6
0
0


STAFFORD
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


27
0
0
27
0
a

Keptechtor
epoxide
AMD £R SON
1986/2
1
0
0
1
0
0


B«?8ER
1986/2
2
0
0
2
0
0


BAftTOW
1984/9
2
0
0
2
0
0


BStOUK
1986/2
2
0
0
2
0
0


BUTLER ' '
1986/2
2
0
0
2
0
0


CttAJTAUGUA
1986/2
2
a
0
2
0
a


CHEROKEE
1986/2
2
0
0
2
0
0


CLAY
1986/2
2
0
0
2
0
0


CLOUO
19B6/2
2
0
0
2
0
0


COWLEY
1986/2
2
0
0
2
0
0


DECAUff
1986/2
2
0
0
2
0
0


DICKINSON
1986/2
2
0
0
2
0
0


DOUGLAS
1986/2
2
0
0
2
0
0


EOWAMS
1984/9
12
0
0
12
0
0


ELLIS
1986/2
2
0
0
2
0
0


EUSWORT#
1986/2
2
0
0
2
0
0


FORD 1
1986/2
2
0
0
2
0
0


GEARY
1986/2
2
0
0
2
0
0


CRAKT
1986/2
2
0
0
2
0
0


GREENWOOD
1986/2
2
0
0
2
0
0


HARVEY
1986/2
2
0
0
2
0
0


KOOGSKA*
1986/2
2
0
0
2
0
0


JACKSON
1986/2
2
0
0
2
0
0


JEWELL
1986/2
2
0
0
2
0
0


KINGMAX
1986/2
2
0
0
2
0
0


LAKE
1986/2
2
0
0
2
0
0

7-KS-37
-------
PESTICIDE SAMPLING IN THE STATE Of KANSAS
DCPA to Heptachlor Epoxide



WELL RESULTS
SAMPLE RESULTS
SAUCE Of
CQ8CEB-
T RATIONS

PESTICIDE
COOKTr
MTE
rom
WELLS
SAxneo
1 Of
POSITIVE
wens
TOTAL 0
SAMPLES
# Of
POSITIVE
SAKPIE*


YEAft/
MONTH

a
NO.
<
~EL

t i
«n.
<
Ma
(Heptachlor
epoxide)
IJNCOU
1986/2
2
0
0
2
a
0 I


LIT*
1986/2
2
0
0
2
a
0


HAS 10#
1986/2
2
0
0
2
0
0


HAKSWU.L
1986/2
4
0
0
4
0
0


HCPKEKSON
1986/2
2
0
0
2
0
0


MO* 1*0#
1986/2
2
0
0
2
0
0


NEOSHO
1986/2
2
0
1
2
0
1
0.026

OSAGE
1986/2
2
0
0
2
0
0


OTTAWA
1986/2
2
0
0
2
a
0


PAtfKEE
1986/9
6
0
0
6
0
0


PKJU1PS
1986/2
2
0
0
2
0
0


PRATT
1986/2
2
0
0
2
0
0


RAUUSS
1986/2
2
0
0
2
0
0


REDO
1986/2
2
0
0
2
0
0


REPU8LIC
1986/2
2
0
0
2
0
0


RICE
1986/2
2
0
0
2
0
0


RQOSS
1986/2
2
0
0
2
0
0


SAUME
1986/2
2
0
0
2
0
0


SEOGUfCK
1986/2
4
0
0
4
0
0


skerjoak
1986/2
2
0
0
2
0
0


sum
1986/2
2
0
0
2
0
0


STAFfOftt)
1984/9
7
0
0
7
0
0


STEVEHS
1986/2
2
0
0
2
0
0


SsXMER
1986/2
2
0
0
2
0
0


TREGO
1986/2
2
0
0
2
0
0


WAtlACS
1986/2
2
0
0
2
0
0


WASHINGTON
1986/2
2
0
0
2
0
0


WYANDOTTE
1986/2
2
0
0
2
0
0

TOTAL DISCRETE
WELLS/SAMPLES


107
0
1
107
0
1
0,026
7-KS-38
-------
PESTICIDE SAMPLING IN THE STATE Of KANSAS
Lindane to Trifluralin



VtU RESULTS
SAMPLE Rt«&TS
RANGE OF
CCNCttf-
TRATtOUS
(Jttf/i)
cesticjw
COUNTY
CATC
WAL
WELLS
SAMPLE)
# or
POSITIVE
VEILS
TOTAL #
SAMPLES
* Of
POSITIVE
SAHPUE


TEAR/
IKW7H

t
HCL
<
MCI

I
MCt
<
XCl
Lindane £ft$ON
1986/2
1
0
0
1
0
0


BAR BEE
1986/2
2
0
0
2
0
0



1984/9
2
0
0
2
0
0


gsowt
1986/2
2
0
0
2
0
0


BUttlft
1986/2
2
0
0
2
0
0


CXAUTAOGOA
1986/2
2
0
0
2
0
0


CHEROKEE
1986/2
2
0
0
2
0
0


CUT
1986/2
2
0
0
2
0
0


acuD
1986/2
2
0
0
2
0
0


cowiey
1986/2
2
0
0
2
0
0


C6«ru»
1986/2
2
0
0
2
0
0


{MOttKSOK
1986/2
2
0
0
2
0
0


GOlttlAS
1986/2
2
0
0
2
0
0


EDWARDS
1984/9
12
0
0
12
0
0


ELLIS
1986/2
2
0
0
2
0
0


ELLSWORTH
1986/2
2
0
0
2
0
0


fORD
1986/2
2
0
D
2
0
0


ffiARY
1986/2
2
0
0
2
0
0


GRANT
1986/2
2
0
0
2
0
0


GftEEStfOOO
1986/2
2
0
0
2
0
0


HARVEY
1986/2
2
0
0
2
0
0


HOOGEMAN
1986/2
2
0
0
2
0
0


JACKSOU
1986/2
2
0
0
2
0
0


JEWELL
1986/2
2
0
0
2
0
D


KINGHAW
1986/2
2
0
0
2
0
0


LAME
1986/2
2
0
0
2
0
0


LlNCOl*
1986/2
2
0
0
2
0
0


LTON
1986/2
2
0
0
2
0
0


MARION
1986/2
2
0
0
2
0
0

7-KS-39
-------
PESTICIDE SAMPLING IN THE STATE OF KANSAS
Lindane to Trifluralin



WELL RESULTS
SAMPLE RESULTS
RANGE OF
COfettK-
TSATIONS
0*9/1)
prsTjcio€
couarr
DATE
TOTAL
WELLS
SAKPL6&
9 tit
POSITIVE
WELLS
TOTAL #
SAMPLES
M OIF
POSITIVE
SAKM.ES


TEAR/

t
HCU
<
KCl '

e
HCt
<
XCL
(Lindane)
KARSHAli
1986/2
4
0
0
4
0
0


UCPMERSO* . .
1986/2
2
0
0
2
0
0


WftUSl
1986/2
2
0
0
2
0
0


KEOSKO
1986/2
2
0
0
2
0
0


OSASE
1986/2
2
0
0
2
0
0


OTTAWA
1986/2
2
0
0
2
0
0


PAWNEE
1984/9
6
0
0
6
0
0


TULIPS
1986/2
2
0
0
2
0
0


PRATT
1986/2
2
0
0
2
0
0


RAULINS
1986/2
2
0
0
2
0
0


RENO
1986/2
2
0
0
2
0
0


REPUBLIC
1936/2
2
0
0
2
0
0


RICE
1986/2
2
0
0
2
0
0


ROWS
1986/2
2
0
0
2
0
0


SAL Jne
1986/2
2
0
0
2
0
0


smwjar
1986/2
4
0
0
2
0
0


SHEft!DAN
1986/2
2
0
0
2
0
0


SKtlK
1986/2
2
0
0
2
0
0


STAFFORD
1984/9
7
0
0
7
0
0


STEVENS
1986/2
2
0
0
2
0
0


SUMNER
1986/2
2
0
0
2
0
0


TREGO
1986/2
2
0
0
2
0
0


WALLACE
1986/2
2
0
0
2
0
0


WASHINGTON
1986/2
2
0
0
2
0
0


WYANDOTTE
1986/2
2
0
0
2
0
0

TOTAL DISCRETE
WEILS/SAMPLES


10 7
0
0
107
0
0


BARTON
1984/9 2
0
0
2
0
0


.^EDWARDS
1984/9 |[| 12
0
0
12
0
0

7-KS-40
-------
PESTICIDE SAMPLING IN THE STATE Of KANSAS
Lindane to Trifluralin



ttU. RESULTS
- SAMPLE RESULTS
RANGE Of
CONCElt-
TftATIGNS
(M/i>
P£$TICU>€
county
MTE
TOTAL
WELLS
SAMPIB>
M OF
POSITIVE
WELLS
TOTAL #
SAMPLES
* or
positive
SAMPLES '


TEAR/
MOUTfl

£
MCL
-e

i
*Ct
<
XCl
(Matathion)
PAWNED
1984/9
6
0
0
6
0
0


STAFFORD
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
YELLS/SAMPLES


27
0
0
27
0
0

Herotschtor
ANDERSON
1986/2
1
0
0
1
0
0


BARBER
1986/2
2
0
0
2
0
0


BROW
1986/2
2
0
0
2
0
0


BUTLEV
1986/2
2
0
0
2
0
0


CHAUTAUQUA
1986/2
2
0
0
2
0
0


iCHEfeOKEE
1986/2
2
0
0
2
0
0


CLAY
1986/2
2
0
0
2
0
0


:'aouB
1986/2
2
0
0
2
0
0


COUtER
1986/2
2
0
0
2
0
0


/DECATUR
1986/2
2
0
0
2
0
0


DiCKfNSOtt
1986/2
2
0
0
2
0
0


DOUGLAS
1986/2
2
0
Q
2
0
0


ELLIS
1986/2
2
0
0
2
0
0


ElUWORTB
1986/2
2
0
0
2
0
0


: FOfiD
1986/2
2
0
0
2
0
0


geart
1986/2
2
0
0
2
0
0


GSANT
1986/2
2
0
0
2
0
0


GREENWOOD
1986/2
2
0
0
2
0
0


HARVE?
1986/2
2
0
0
2
0
0


;HOOCEHAK
1986/2
2
0
0
2
0
0


JACKSON
1986/2
2
0
0
2
0
0


JEWELL
1986/2
2
0
0
2
0
0


K1KGMAH
1986/2
2
0
0
2
0
0


LAtiE
1986/2
2
0
0
2
0
0


LlHCOL#
1986/2
2
0
0
2
0
0


LYON
1986/2
2
0
0
2
0
0

7-KS-41
-------
PESTICIDE SAMPLING IN THE STATE OF KANSAS
Lindane to Trifluralin



WELL RESULTS
SAMPLE RESULTS
RAKGE Of
CONCEtf-
TRATlOkS
OtftM)
PfSttCJM
-------
PESTICIDE SNCH.IMG 1> THE STATE OF KANSAS
Lirdarw to Trif luraUn



WELL RESULTS
SAMPLE RESULTS
RAtfCE OF
CONCEN-
TRATIONS
tM/U
PESTICH*
souarr - -
0*TF
TOT At
WELLS
SAMPLED
# 0?
POSITIVE
WELLS
TOTAL #
SAMPLES
*0?
POSITIVE
SAMPLES


TEAR/
KOUtM

t
XCL
<
Ktt

2
HCt
«
#a
(Kethoxychlor)
butler
1966/2
2
0
0
2
0
0


cuAUTAyoy*
1986/2
2
0
0
2
0
0


CHEftOKEE
1986/2
2
0
0
2
0
0


CUY
1986/2
2
0
0
2
0
0


clouo
1986/2
2
0
0
2
0
0


C0WLES
1986/2
2
0
0
2
0
0


DECATUR
1986/2
2
0
0
2
0
0


0!CXlN5O(t
1986/2
2
0
0
2
0
0


:50UCL«
1986/2
2
0
0
2
0
0


EDWARDS
1984/9
12
0
0
12
0
0


Ell IS
1986/2
2
0
0
2
a
0


ELLSWORTH
1986/2
2
0
0
2
0
0


*GH0
1986/2
2
0
0
2
0
Q


WARY
1986/2
2
0
0
2
0
0


GRANT
1986/2
2
0
0
2
0
0


GREEWWOOO
1986/2
2
0
0
2
0
0


HARVFT
1986/2
2
a
0
2
0
a


HOO&EMAN
1986/2
2
0
0
2
0
0


JACKSON
1986/2
2
0
0
2
0
0


JEWELL
1986/2
2
0
0
2
0
0


KINGMAK
1986/2
2
0
0
2
0
0


LANE
1986/2
2
0
0
. 2
0
a


LINCOLN
1986/2
2
0
0
2
0
0


L*ON
1986/2
2
0
0
2
0
0


MARION
1986/2
2
0
0
2
0
0


KARSHALl
1986/2
4
0
0
4
0
0


HCPHERSOIf
1986/2
2
0
0
2
0
0


HOKTOM
1986/2
2
0
0
2
0
0


fflEOSKO
1986/2
2
0
0
2
0
0

7-KS-4 3
-------
PESTICIDE SAMPLING IN THE STATE OF KANSAS
Lindane to Trifturelin



WCU RESULTS
SAHPIE RESULT?
XAXG£ OF
TRAT[OSS
(«/l>
PUTSCH*
cowry
OATE
TOT At
WELLS
SAMPLED
# Of
POSITIVE
VELIS
10TAL #
$AM>iES
* OF
POSITIVE
SAMPLES


,f£AR/ ,
NONTh

t
KCL
<
#Cl

2
MCt
<
tta
CMethoxyehlor)
osAse
1986/2
2
0
0
2
0
0 1


OTTAWA
1986/2
2
0
0
2
0
0


p*we :
1984/9
6
0
0
6
0
0


khiliw
1986/2
2
0
0
2
0
0


PRATT
1986/2
2
0
0
2
0
0


RAULTUS.
1986/2
2
0
0
2
0
0


REKO " ^
1986/2
2
0
0
2
0
0


REPUBLIC
1986/2
2
0
0
2
0
0


RtCE
1986/2
2
0
0
2
0
0


ROOK'S
1986/2
2
a
0
2
0
0


SALINE
1986/2
2
0
0
2
0
0


SEOGWIOC
1986/2
4
0
0
2
0
0


SHERIDAN
1986/2
2
0
0
2
0
0


smt»
1986/2
2
0
0
2
0
0


STAFFORD
1984/9
7
0
0
7
0
0


STEVEWS
1986/2
2
0
0
2
0
0


SUMMER
1986/2
2
0
0
2
0
0


TRE60
1986/2
2
0
0
2
0
0


WASHINGTON
1986/2
2
0
0
2
0
0


WTANDOTTE
1986/2
2
0
0
2
0
0

TOTAL DISCRETE
UELLS/SAMPLES


107
0
0
107
0
0

HetriboZiri
ANDERSON
1986/2
1
0
0
1
0
0


ATCHISON
1987/12
2
0
0
2
0
0


BARBER
1986/2
2
0
0
2
0
0


BROWN
1986/2
2
0
0
2
0
0



1987/12
10
0
0
10
0
0


BUTLER
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


CHAUTAUQUA .
1986/2
2
0
0
2
0
0

7-KS-44
-------
PESTICIDE SAMPLING IN THE STATE Of KANSAS
Lindane to Tnfluralin



*EU RESULTS
SAMPLE RESULTS
RANGE OF
«*««-
HUTtOKS
(jiem
PFST JCIOf
cawnr
DATE
tOTAl
URLS
SAMPLED
i OF
POSITIVE
- WELLS
tOTAi. *
sAm.es
* 01
POSITIVE
' SAMPLES '


«A8/
*0*1*

I
KCL
<
KCl

£
MCI
<
«CL
(Metrfbuifn)
CHEJKxet
1986/2
2
0
0
2
0
0



1987/12
i
0
0
4
0
0


CLAY
1986/2
2
0
0
2
0
0



1987/12
3
0
0
3
0
0


aout> •'
1986/2
2
0
0
2
0
0


COFFEY
1987/12
1
0
0
1
0
0


COWLEY
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0


CKAUfORD
1987/12
1
0
0
1
0
0


D€ CAT Lift
1986/2
2
0
0
2
0
0


DICKIWSOB
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


DOK3PHAH
1987/12
3
0
0
3
0
0


00USUS
1986/2
2
0
0
2
0
0


Ell IS
1986/2
2
0
0
2
0
0


SUSUMU#
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0


FORD
1986/2
2
0
0
2
0
0


FRAN 10. I#
1987/12
1
0
0
1
0
0


GEART
1986/2
2
0
0
2
0
0


GRAKT
1986/2
2
0
0
2
0
0


GSEENWOOO
1986/2
2
0
0
2
0
0


HARPER
1987/12
1
0
0
1
0
0



1986/2
2
0
0
2
0
0


-
1987/12
2
D
0
2
0
0


HOOCEMAN
1986/2
2
0
0
2
0
0


JACKSOIf
1986/2
2
0
0
2
0
0


:JEfFERSO#
1987/12
5
0
0
5
0
0


JEWELL
1986/2
z
0
0
2
0
0

7-KS-45
i
-------
PESTICIDE SAMPLING II TIE STATE OF KAKSAS
lindane to Triflunlln



WELL RESULTS
SA*>LE RESULTS
RAXCS Of
ccxetu-
TRATIONS
t»/o
festtciw
co*ty
DATE
TOTAL
UELLS
SAKHS>
9 OF
POSITIVE
VEILS
TOTAL #
SAMPLES
* OF
POSITIVE
SAMPLES


TEAR/
HCMTK

I
#CL
<
*a

*
MCL
<
MCI
(Hetrlbmin)
K!#OMAK
1986/2
2
0
0
>
0
0


LAKE
1986/2
2
0
0
2
0
0


tEAVEWOfiTK
1987/12
6
0
1
6
0
1
0.15

tINCOL*
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


uro«
1986/2
2
0
0
2
0
a


KIRICW
1986/2
2
0
0
2
0
0



1987/12
2
0
0
2
0
0


HARSMAU
1986/2
4
0
0
4
0
0



1987/12
2
0
0
2
0
0


KCMIEftSO*
1986/2
2
0
0
2
0
0



1987/12
1
0
D
1
0
0


H!AMt
1987/12
4
0
0
4
0
0


HORTON
1986/2
2
0
0
2
0
0


NEMAHA
1987/12
7
0
0
7
0
0


NEOSHO
1986/2
2
0
0
2
0
0



1987/12
2
a
0
2
0
0


OSAGE
1986/2
2
0
0
2
0
0



1987/12
3
0
0
3
0
0


OTTAWA
1986/2
2
0
0
2
0
0



1987/12
7
0
0
7
0
0


fflULJPS
1986/2
2
0
0
2
0
0


POTTAUATONIE
1987/12
6
0
0
6
0
0


PRATT
1986/2
2
0
0
2
0
0


•RAWtlUS
1986/2
2
0
0
2
0
0


•¦'RENO
1986/2
2
0
0
2
0
0


;mpuw.ic
1986/2
2
0
0
2
0
0


RICE
1986/2
2
0
0
2
0
0



1987/12
1
0
0
1
0
0

7-KS-46
-------
PESTICIDE SMniHC IN THE STATE Of CAMSAS
Lindane to Trifluralin



WELL RESULTS
SAWLE RESULTS
RAMCE OF :
C0*C£K-
TWTJORS
mncm
COMTT
MTE
TOTAL
WEILS
# OF
POSITIVE
WELLS
total # :
SAMPLES
• # OF
POSITIVE
SAMPLES


tEAR/
MOUTH

t
XCL
¦
-------
PESTICIDE SMPLIMG IN THE STATE Of KANSAS
Lindane to Trifluralin




WEIL RESULTS
SAWLE RESULTS
RANGE OF
COKCEK-
rSATIORS .
Us/U

COtart
OATE
TOTAL
WELLS
SAMPlfiB
* or
POStTlVE
WELLS
TOTAL #
SAMPLES
* OF
«»3TJVE
SAKftjES


3C
II

2
#CL
<
*Cl

t
«x
#CL
CParathlon,
methyl)
PAWEE
1984/9
6
0
0
6
0
0


STAFFORD
1986/9
7
0
0
7
0
o_
0

TOTAL DISCRETE
WELLS/SAMPLES
I
I
27
0
0
27
0
Phoret«
tARTON
1984/9
2
0
0
2
0
0


fPWATOS
1984/9
12
0
0
12
0
0


Wtt«E£
1984/9
6
0
0
6
0
0


STAFFORD
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


27
0
0
27
0
a

Picloran
ANDERSON
1986/2
1
0
0
1
0
0


BARBER
1986/2
2
0
0
2
0
0


BROW#
1986/2
2
0
0
2
0
0


BUTLER
1986/2
2
0
0
2
0
0


CHAUTAUQUA
1936/2
2
0
0
2
0
0


CHEROKEE
1986/2
2
0
0
2
0
0


"cU*
1986/2
2
0
0
2
0
0


cia»
1986/2
2
0
0
2
0
0


cow.es
1986/2
2
0
0
2
0
0


DECATUR
1986/2
2
0
a
2
0
0


^rcKi«so»f
1986/2
2
0
0
2
0
0


DOUGLAS
1986/2
2
0
0
2
0
0


ELLIS
1986/2
2
0
0
2
D
0


ELLSVCRIH
1986/2
2
0
0
2
0
0
S.6

FORD
1986/2
2
0
0
2
0
0


CHART
1986/2
2
0
0
2
0
0


&UN1
1986/2
2
0
0
2
0
0


GREENWOOD
1986/2
2
0
0
2
0
0


NARVE*
1986/2
2
0
0
2
0
0

7-KS-48
-------
PESTICIDE SAMH.IN& IN THE STATE Of KANSAS
Lindane to Trifluraliri



WELL RESULTS
SAWLE RESULTS
RAHG£ OF
CONCEtf- :
WAT SONS
OWl>
PESTICIM-
couant
OATE
TOTAL
WELL?
SAILED
# Of
POSITIVE
WELLS
totAt #
SAMPLES
* Of
POSITIVE
SAKPtiS


TEAR/
KOMTM

s
#CL
*
*a

Z
ma
«
mi
(Pictorwn)
WJMEKA#
1986/2
2
0
0
2
0
0


JACXSO#
1986/2
2
0
0
2
0
0


JEWELL
1986/2
2
0
0
2
0
0


KIHSKAK
1986/2
2
0
0
2
0
0


LANE
1986/2
2
0
0
2
0
0


LINCOLN
1986/2
2
0
0
2
0
0


LYON
1986/2
2
0
0
2
0
0


MARION
1986/2
2
0
0
2
a
0

1
MARSHALL
1986/2
4
0
0
4
0
0


HCPHERSO*
1986/2
2
0
0
2
0
0


MORTON
1986/2
2
0
0
2
0
0


NEOSHO
1986/2
2
0
0
2
0
0


OSAGE
1986/2
2
0
0
2
0
0


OTTAWA
1986/2
2
0
0
2
0
0


PHJLL1PS
1986/2
2
0
0
2
0
0


psarr
1986/2
2
0
0
2
0
0


SAWL1US
1986/2
2
0
0
2
0
0


' REK6
1986/2
2
0
0
2
0
0


REPUBLIC
1986/2
2
0
0
2
0
0


RICE
1986/2
2
0
0
2
0
0


ROCK'S
1986/2
2
0
0
2
0
0


SAL IHE
1986/2
2
0
0
2
0
0


SEOCinCK
1986/2
4
0
0
2
0
0


$KE*lDA«
1986/2
2
0
0
2
0
0


SwlTK
1986/2
2
0
0
2
0
0


STEVENS
1986/2
2
0
0
2
0
0


•SJWJER
1986/2
2
0
0
2
0
0


TREGO
1986/2
2
0
0
2
0
0


VAUACE
1986/2
2
0
0
2
0
0

7-KS-49
-------
PESTICIDE SAWLIKG IH THE STATE (if KANSAS
Lindane to TrifluraHn



WELL RESULTS
5AWLE RESULTS
RANGE OF
COKC£tf-
TKATIOKS
PfSTlCflK
towin
WF
TOTAl
VEILS
SAMPLED
9 OF
POSITIVE
WELLS
TOTAL #
SAMP1ES
# OF
POSITIVE
SAMPLES


TEAR/
MOUTH

2
net.
na

m
<
KCL
(Pi dor am)
-UASNlVGrOii
1986/2
2
0
0
2
0
0


VTAtfDOTTE
1986/2
2
0
0
2
0
0

TOTAL DISCRETE
WELLS/SAMPLES


103
0
1
103
0
1
5.6
Pronator!
SAStfOil
1986/9
2
0
0
2
0
0


EDWARDS
1984/9
12
0
0
12
0
0


PAWNEE
1984/9
6
0
0
6
0
0


STAFFORD
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


27
0
0
27
0
0

Prtimetryn
BARTON
1984/9
2
0
0
2
0
0


EDWARDS
1984/9
12
0
0
12
0
0


PAWNEE
1984/9
6
0
0
6
0
0


STAFFORD
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
VEllS/SAWLES J


27
0
0
27
Q
0

PropacMor
ANDERSON
1986/2
1
0
0
1
0
0


.GUTlEft
1986/2
2
0
0
2
0
0


BROWV
1986/2
2
0
0
2
0
0


BUTtEft
1986/2
2
0
0
2
0
c


CKAUTAUOftM
1986/2
2
0
0
2
0
0


CHEROKEE
1986/2
2
0
0
2
0
0


tUY
1986/2
2
0
0
2
0
0


aouB
1986/2
2
0
0
2
0
0


COWLER
1986/2
2
0
0
2
0
0


DECATUR
1986/2
2
0
0
2
0
0


CJCKIWSOH
1986/2
2
0
0
2
0
0


COU6LAS
1986/2
2
0
0
2
0
0


euis
1986/2
2
0
0
2
0
0


ffeiLSUORTR
1986/2
2
0
0
2
0
0

7-KS-50
-------
PESTICIDE SAWLINS IN THE STATE OF KANSAS
Lindane to Triflgrtlin



WELL RESULTS
SAftPUE RESULTS
BAKGE OF
COUC&i'
TRATFOKS
<*«/U

COWiTT
HATE
TOTAj.
WEILS
SMVLB>
* OF
POSITIVE
VEILS
TOTAL t
SAMPLES
* OF
POSITIVE
SAMPLES
-

TEAR/ •
HONTH

£
*CL
<

£
act
<
MCI
(Propachlor)
FORp
1986/2
2
0
0
2
0
0



1986/2
2
0
0
2
0
0


<»MT
1986/2
2
0
0
2
0
0


KEEKWOOO
1986/2
2
0
0
2
0
0


RARVET
1986/2
2
0
0
2
0
0


HOOtiEMAN
1986/2
2
0
0
2
0
0


JACXSW
1986/2
2
0
0
2
0
0


JEWELL
1986/2
2
0
0
2
0
0


X3KGMAH
1986/2
2
0
0
2
0
0


LAME
1986/2
2
0
0
2
0
0


L!HCOlH
1986/2
2
0
0
2
0
0


LYON
1986/2
2
0
0
2
0
0


MARION
1986/2
2
0
0
2
0
0


MARSHALL
1986/2
4
0
0
k
0
0


NCPHERSOK
1986/2
2
0
0
2
0
0


MORTON
1986/2
2
0
0
2
0
0


KEOSHO
1986/2
2
0
0
2
0
0


CSACE
1986/2
2
0
0
2
0
0


OTTAWA
1986/2
2
D
0
2
0
0


PHILLIPS
1986/2
2
0
0
2
0
0


PRATT
1986/2
2
0
0
2
0
0


RAULIUS
1986/2
2
0
0
2
D
0


REh'O
1986/2
2
0
0
2
0
0


REPUBLIC
1986/2
2
0
0
2
0
0


RICE
1986/2
2
0
0
2
0
0


ROOK'S
1986/2
2
0
0
2
0
0


SALIKE
1986/2
2
0
0
2
0
0


SfOSaWIC*
1986/2
4
0
0
2
0
0


SWERIDAV
1986/2
2
0
0
2
0
0

7-KS-51
-------
PESTICIDE SUPLIKG III THE STATE Of KANSAS
Lindane to Trlfluralin



WELL RESULTS
SAMPLE &ESULTS
RAKCE OF i
COKCEK-
TSATiONS :
t»S/0

county
OATS
TOTAL
WELLS -
SAMPLED
# OF
POSITIVE
WELLS
total #
SAMPLES
* OF
POSITIVE
SAMPLES


YEAR/
HOHTH

2
< -
*Cl

t
m.
¦«
NCI
(Propechlor)
SMITH
1986/2
2
0
0
2
0
0


STEVEIIS
1986/2
2
0
0
2
0
0


ttJWIER
1986/2
2
0
0
2
0
0


TRE60
1986/2
2
0
0
2
0
0


UALIACE
1986/2
2
0
0
2
0
0


UASHrNCTOH
1986/2
2
0
0
2
0
0


wmartt
1986/2
2
0
0
2
0
0

TOTAL DISCRETE
WELLS/SAMPLES


103
0
0
103
0
0

: Propezlne
BAR TOT
1984/9
2
0
0
2
0
0


It Wards
1984/9
12
0
1
12
0
1
0.01

PAUNEI
1984/9
6
0
0
6
0
0


STAFFORD
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


27
0
1
27
0
1
0.01
fmazfne•. i;
BARTON
1984/9
2
0
0
2
0
0


EDWARDS
1984/9
12
0
0
12
0
0


PAWJEE
1984/9
6
0
0
6
0
0


STAFFORD
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


27
0
0
27
0
0

Sfmetone
BARTON
1984/9
2
0
a
2
0
0


EDWARDS
1984/9
12
0
0
12
0
0


PAWNEE
1984/9
6
0
0
6
0
0


STAFFORD
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


27
0
0
27
0
0

Slmetryn
BARTOW
1984/9
2
0
0
2
0
0


'EDWARDS
1984/9
12
0
0
12
0
0


PAWNEE
1984/9
6
0
0
6
0
0


STAFFORD
1984/9
7
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAHPLES


27
0
0
27
0
0

7-KS-52
-------
PESTICIDE SAMPLING IN THE STATE OF KANSAS
Lindane to Trifluralin



4£Li. 8EWUS
sample *£&&rs
RANGE Of
cwcta-
IWIONS
(M/U
ppsucioe
cowmr
OATE
TOTAL
W&LS
«ma>
* Of
POSITIVE
UCLLS
total #
SAWHES
« Of
KHITJVg
' $AWL£8


TEAR/
MONT*

HCL
<
*tl

t
*CL
<
XCl
Tdxaphtn*
JUflKRSON
1986/2
1
0
0
1
0
0


SAtffif*
1986/2
2
0
0
2
0
0


BARTON
1984/9
2
0
0
2
0
0


BROW
1986/2
2
0
0
2
0
0


WJTIEB
1986/2
2
0
0
2 -
0
0


CHAUTAUQUA
1986/2
2
0
0
2
0
0


CHEROKEE
1986/2
2
0
0
2
0
0


CUT
1986/2
2
0
0
2
0
0


CLO©
1986/2
2
0
0
2
0
0


COWLEY
1986/2
2
0
0
2
0
0


DECATUR • •
1986/2
2
0
0
2
0
0


DjexrNso*
1986/2
2
0
0
2
0
0


SCVSIAS
1986/2
2
0
0
2
0
0


EDVAROS '
1984/9
12
0
0
12
0
0


aus
1986/2
2
0
0
2
0
0


EtLS«3«T»
1986/2
2
0
0
2
0
0


FOSD
1986/2
2
0
0
2
0
0


GEAR1T
1986/2
2
0
0
2
0
0


GRANT ¦ ¦ -
1986/2
2
0
0
2
0
0


GREENWOOO'
1986/2
2
0
0
2
0
0


HARVET
1986/2
2
0
0
2
0
0


HOOCEHAJf
1986/2
2
0
0
2
0
0


JAWSO*
1986/2
2
0
0
2
0
0


JRSIL
1986/2
2
0
0
2
0
0


K1NGKAW
1986/2
2
0
0
2
0
0


LANE
1986/2
2
0
0
2
0
0


LIHCOLH
1986/2
2
0
0
2
0
0


LYON
1986/2
2
0
0
2
0
0


MARION
1986/2
2
0
0
2
0
0


MARSHALL
1986/2
4
0
0
4
0
0


MCPHESSO*
1986/2
2
0
0
2
0
0


MORTON
1986/2
2
0
0
2
0
0


ME OS HO '
1986/2
2
0
0
2
0
0


OSAGE
1986/2
2
0
0
2
0
0

7-KS-53
-------
PESTICIDE SAMPLING IN THE STATE OF KANSAS
lindane to Trifturalin



WELL RESULTS
SA»LE #FSW.r8
RANGE OF
CONCEN-
TRATIONS
PESJ3CJ3>£
cousin
DATE
tOTAl
WELLS
SAMPLED
* or
WJStTJVE
WELLS
tOTAL #
SAWH.ES
* OP
rosmwE
SAJPLES


TEAR/
HONTH

ffCl
<
*ct

Met.
NCL
(Toxsphtne)
OTTAWA
1986/2
2
0
0
2
0
0


WWWE
1984/9
6
0
0
6
0
0


PHILLIW
1986/2
2
0
0
2
0
Q


PfiATT
1986/2
2
0
0
2
0
0


RAWLIUS
1986/2
2
0
0
2
0
0


CEHO
1986/2
2
0
0
2
0
0



1986/2
2
0
0
2
0
0


fttCE
1986/2
2
0
0
2
0
0


ROOK'S
1986/2
2
0
0
2
0
0


SAlIttE
1986/2
2
0
0
2
0
0


$€0GWICK
1986/2
4
0
0
2
0
0


SHERIDAN
1986/2
2
0
0
2
0
0


$Ht?K
1986/2
2
0
0
2
0
0


STAFFORD
1984/9
7
0
0
7
0
0


STEVE1IS
1986/2
2
0
0
2
0
0


SUWlE*
1986/2
2
0
0
2
0
0


TREGO
1986/2
2
0
0
2
0
0


WALLACE
1986/2
2
0
0
2
0
0


WASHINGTON
1986/2
2
0
0
2
0
0


WYANDOTTE '
1986/2
2
0
0
2
0
0

TOTAL DISCRETE
WEILS/SAMPLES


107
0
0
107
0
0

THftursHn
ATCHISON
1987/12
2
0
0
2
0
0


BARTON
1984/9
2
0
0
2
0
0


BRCfcTJ
1987/12
10
0
0
10
0
0


BUTLER
1987/12
2
0
0
2
0
0


CHEROKEE
1987/12
4
0
0
4
0
0


euv
1987/12
3
0
0
3
0
0


COFFE*
1987/12
1
0
0
1
0
0


COWLEY
1987/12
1
0
0
1
0
0


CRAWFORD
1987/12
1
0
0
1
0
0


D!OCIXSO!t
1987/12
2
0
0
2
0
0


OOVIPKAH
1987/12
3
0
0
3
0
0


EDWARDS
1984/9
12
0
0
12
0
0

7-KS-54
-------
PESTICIDE SAWLING II THE STATE OF UUSAS
Lindane to Trifturatin



WELL RESULTS
$Atf>LE RESULTS
RJWCE OF
GOKCEK-
TRATIQKS
CM/U
{~est »not
town
DATS
TO? At
WELLS
SAW LED
* OF
POSITIVE
VEILS
total #
SAMfH.ES
# OF
POSITIVE
SAMPLES


TEAS/
MONTH

2
MCL
<
mu

£
MCl
<
m.
(Trifluralin)
ELLSWORTH
1987/12
1
0
0
1
0
0


F*AXKUX -
1987/12
1
0
D
1
0
0


HARPER
1987/12
1
0
0
1
0
0


HARVEY
1987/12
2
0
0
2
0
0


JEFFERSOK
1987/12
5
0
0
5
0
0


LEAVENWORTH
1987/12
6
0
0
6
0
0


LINCOLN
1987/12
2
0
0
2
0
0


MARION
1987/12
2
0
0
2
0
0


MARSHALL
1987/12
2
0
0
2
0
0


MCPHERSO*
1987/12
1
0
0
1
0
0


HIAHt
1987/12
4
0
0
4
0
0


HECSHO
1987/12
2
0
0
2
0
0


OSAGE
1987/12
3
0
0
3
0
0


OTTAWA
1987/12
7
0
0
7
0
0


*>AVKEE
1984/9
6
D
0
6
0
0


POTTAWATOHIE
1987/12
6
0
0
6 .
0
0


RICE
1987/12
1
0
0
1
0
0


RILEY
1987/12
1
0
0
1
0
0


STAFFORD
1984/9
7
0
0
7
0
0


WABAUNSEE
1987/12
1
D
0
1
0
0

TOTAL DISCRETE
WEILS/SAMPLES


88
0
0
88
0
0

GRAND TOTAL
DISCRETE
WEILS/SAKPLES


214
7
29
* 214
7
29

NOTE: Some wells Mere resarapled fop 2,4-D, 2,4,5-T, alachlor, aldrin, atraiine,
ehlordane, dieldrin, endcsulfan II, heptachlor epoxide and metribuzin. As
individual wells results were not given for the resamples, these results are
not included in the tBbles.
~ No MCl or Lifetime HA available.
* Includes o-p" DDT and p*p" DDT.
7-KS-55
-------
STATE OF KANSAS
UELLS BY COUITt
county
TYP£S OF WEttS
SOURCE OF
CONTAMINATION
-------
STATE OF KANSAS
WEILS BY COUNTY
. count*
TYPES OF WEUS
SOURCE OF
CONTAMINATION

.DRINkJtlG WATER
KQJurostae
CrtHCT
TOTAL
SMPiO
I
act
«
Ma
T0TA1
SMPIB
¦ *
KCL
	«C.
NCI
TOTAi
SKPLD
t
MCI
. 1 1 .. .
KCL
UFW*
„ *
' p%
UMK*
Kfrt^aan
2
0
0
0
0
0
0
0
0
0
0
0
L«ne
2
0
0
0
0
0
0
0
0
0
0
0
l«avonvorth
6
1
0
0
0
0
0
0
0
0
0
1
lirtcoln
i
0
0
0
0
0
0
0
0
0
0
0
I yon
2
0
0
0
0
0
0
0
0
0
0
0
Morion
i
0
1
0
0
0
0
0
0
0
0
1
Marshall
6
0
1
0
0
0
0
0
0
0
0
1
McPfierson
3
0
0
0
0
0
0
0
0
0
0
0
msrsl
4
1
0
0
0
0
0
0
0
0
0
1
Norton
2
0
0
0
0
0
0
0
0
0
0
0
ttmaha
7
0
0
0
0
0
0
0
0
0
0
0
Neosho
4
1
0
0
0
0
0
0
0
0
0
1
Ossge
5
1
0
0
0
0
0
0
0
0
0
1
Ottawa
9
0
0
0
0
0
0
0
0
0
0
0
Pawnee
5
0
2
0
0
0
1
0
1
0
0
3
Ph illidb
2
0
0
0
0
0
0
0
0
0
0

Pottawatomie ¦:•
6
0
0
0
0
0
0
0
0
0
0
0
Pratt
2
0
0
0
0
0
0
0
0
0
0
0
Pnwlins
2
0
0
0
0
0
0
0
0
0
0
0
Reno
2
0
0
0
0
0
0
0
0
0
0
0
Repubf sc
2
0
0
0
0
0
0
0
0
0
0
0
Rice
3
0
0
0
0
0
0
fli
0
0
0
0
Riley
1
0
0
0
0
0
0
0
0
0
0
0
Rooks
2
0
0
0
0
D
0
0
0
0
0
0
Saline
2
0
0
0
0
0
0
0
0
0
0
0
Sedgulck 	
4
0
0
0
0
0
0
0
0
0
0
0
Sheridan
2
0
0
0
0
0
0
0
0
0
0
0
Sm't^
2
0
0
0
0
0
0
0
0
0
0
0
Stafford
6
0
6
0
0
0
1
0
1
0
0
7
Stevens
2
0
0
0
0
0
0
0
0
0
0
0
. Siraner
2
0
0
0
0
0
0
0
0
0
0
0
7-KS-58
-------
STATI OF KANSAS
UELLS BT COUNTY
caw*
TYPES OF VELtS
SOURCE OF
CONTAMINATION
(WJKSfJl €» WSlliS)
WATER
km i rot we
01 HEX
TOTAL
SMPU>
t
RCL
MCI
TOTAL
SMPLO
£
KCl
-------
Wei! Sampling by County
(Total Number of Wells with Pesticide Detections / Total Number of Wells Sampled)
Missouri
Pesticides Detected
Alachlor
Atrazine
Bentazon
Butylate
Carbaryl
Carboiuran
Chlorpyrifos
Cyanazine
2,4-D
Total Wells Sampled
per County
E2
•Z]
E3
I I
> 1000
501 to 1000
101 to 500
to 100
to 50
51
1
No wells sampled
Diazinon
Fluometuron
Fonofos
HepLachlor
Lindane
Linuron
Methomyl
Metolachlor
Metribuzin
Monocrotophos
Paraquat
Farathion, Ethyl
PCNB
Pendimethalin
Propachlor
Propanil
Simazine
2,4,5-T
Terbufos
Thlobencarb
Trifluralin
Chlordane
Molinate
7-MO-l
-------
Intentionally Blank Page
-------
MISSOURI
OVERVIEW OF STATE LEGISLATIVE AND ENVIRONMENTAL POLICIES
REGARDING PESTICIDES IN GROUND WATER
Land in southeastern Missouri has been intensively developed for agricultural production.
Large-scale production of cotton, rice, grain sorghum, wheat, soybeans, and corn is
associated with use of pesticides. Based on 1984 crop acreage and the average rate of
pesticide application for the most commonly used pesticides, an estimated 1 million gallons
of liquid and one-half million pounds of dry pesticides were applied to agricultural land in
the southeastern Missouri area. Pesticides widely used were atrazine, alachlor, cyanazine,
metolachlor, trifluralin, propanil, 2,4-D, and 2,4,5-T. Missouri's Department of Natural
Resources, Division of Environmental Quality, is concerned that the increased and
prolonged use of these pesticides can affect shallow ground- and surface-water supplies used
as sources of domestic, public, and irrigation supplies. The geohydrology and water quality
of southeastern Missouri and the northern Mississippi alluvial plain have been studied in
detail, but sparse information is available on the occurrence of organic chemicals in ground
or surface water. The 1988 investigations are part of the Gulf Coast Regional Aquifer-
Systems Analysis (Grubb, 1984). The cretaceous, tertiary, and younger sediments are being
studied to evaluate the major aquifer systems in the Gulf Coastal Plain.
REPORTED STUDIES OF PESTICIDES IN GROUND WATER
Mesko, Thomas O. and Gale M. Carbon, Occurrence of Pesticides, Nitrates, Organic
Compounds, and Trace Elements in Ground Water and Streams, Southeastern Missouri,
1986-87, U.S. Geological Survey Open-File Report 88-495. Prepared in Cooperation With
the Missouri Department of Health and the Missouri Department of Natural Resources
(presented 1988,73 pp.). For further information, contact John L. Howland, Chief Missouri
Dept. of Natural Resources Planning Section - Water Pollution, (314) 775-7143.
Primary Objective
The purpose of this study is to analyze the quality of ground water from domestic, irrigation,
and public-supply wells, and surface water and streambed sediment. Samples were collected
in June-July and November 1986, and July and September 1987, analyzing specifically for
contamination by 55 pesticides.
Desigq
The Mississippi River Valley alluvial aquifer is the surficial unit in the area chosen for study.
The aquifer is a significant source of water for domestic, irrigation, and public-supply use.
During 1986-87, 129 sites were samples. These included 74 domestic wells, 25 irrigation
wells, 25 public-supply wells, and 5 streams that drain the 5 major drainage basins in the
7-MO-3
-------
region. Personnel from the U.S. Geological Survey, Missouri Department of Health,
Missouri Department of Natural Resources, and county health officials collected the
samples. TTie University of Missouri Environmental Trace Substances Laboratory
performed the analyses for pesticides in samples collected from June through July, and
November 1986. The Missouri Department of Health Laboratory analyzed samples
collected during 1986 for physical properties, common constituents, nitrate, trace elements,
and duplicate pesticide samples. Samples collected in July 1987 were analyzed for pesticides
by the University of Iowa Hygienic Laboratory. Samples collected in September 1987 were
analyzed for pesticides by both the University of Iowa Hygienic and Missouri Department
of Health Laboratories. All pesticide analyses are considered total recoverable
concentrations from unfiltered water samples.
Well selection was based on a wide spatial distribution in rural agricultural areas. Most
domestic wells in the area are shallow, averaging less than 35 ft in depth. Wells with known
contamination or locations near agricultural chemical storage and distribution facilities were
NOT selected for sampling. Information was obtained from the owner concerning crop
types grown near the well in recent years and if pesticides had been used at or near the well
recently.
The following is a list of minimum detection limits (ug/L) used at the individual
laboratories. The analytical methods used for the determination of the pesticide chemicals
were not included.
University of Missouri Environmental Trace Substances Laboratory
	Colwhia, Missouri (June-July 1986)	
Maehlor
0.01
Fluomaturon
1.0
Paraquat
500
Atrazine
0.5
Glyphosate
5.0
PCNB
0.005
Bentazon
5.0
Linuron
1.0
Pendimethal in
0.01
Carbaryl
1.0
Malathion
0.05
Pernethrin
5.0
Carbofuran
1.0
Methomyl
1.0
PropaniI
0.02
Chlordane
0.01
Hethyl parathion
0.05
Sethoxydia
5.0
Chlorpyrifos
0.05
Netolachlor
5.0
Terbufos
0.05
Cyanazine
0.5
MetMbuzin
0.5
Toxaphene
0.1
Cypermethrin
5.0
Hoiinate
0.5
trifluralin
0.005
Diazinon
0.05
Monocrotophos
0.05
Tunic
5.0
Dimethoate
0.05
Napatalam
5.0
2,4-D
0.01




2,4,5-T
0.01
7-MO-4
-------

Missouri Department of Health laboratory.
Jefferson City,
Missouri
(June 1986}

Alaehlor
0.05
ODE
0.05
lindane
0.1
Propaehlor
0.1
Aldrin
0.05
DDI
0.05
Malathion
0.5
PropaniI
0.2
j Atrazine
0.5
Piazinon
0.05
Methoxyehlor
0.5
Toicapftene
1.0
Chlordene
0.1
Dieldrin
0.1
Methyl
parathion
0.05
Trifluralin
0.05
Chlorpyrffos
0.1
Endrin
0.1
Netolachlor
0.5
2,4-D
0.1
DOO
0.05
Heptachlor
0.1
Picloram
0.1
2,4,5-T
0.05
University of Missouri Environmental Trace Substances
laboratory, Columbia, Missouri {November 1986)
Alaehlor
0.02
Ii nuron
0.2
PropaniI
0.04
Atrazine
0.1
Malathion
0.2
Sethoxydim
0.2
Bentazon
2.0
Methomyl
5.0
Terbufos
0.2
Carbaryl
0.2
Methyl parathion
0.2
Thiobencarb
0.2
Carbofuran
0.1
Metolachlor
0.05
Toxaphene
0.1
Chlordane
0.04
Metribuzin
0.2
Trifluralin
0.05
Chlorpyrifos
0.2
Molinate
0.1
2,4-D
0.05
Cyanazine
0.2
Mooocrotophos
0.2
2,4,5-T
0.05
Oiazinon
0.2
Paraquat
100


Oimethoate
0.2
PCNB
0.005


Oimethoate
0.05
Pendimethalin
0.02



University of Iowa Hygienic laboratory, Iowa City, Iowa
(July 1987)
Alaehlor

0.1
Metolachlor

0.1
Atrazine

0.1
Metribuzin

0.1
Butylate

0.1
Pendiraethal in

0.1
Carbaryl

0.1
Phorate

0.1
Carbofuran

0.1
Propaehlor

0.1
Chlorpyrifos

0.1
PropaniI

0.1
Cyanazine
Oiazinon

0.1
Terbufos

0.1

0.1
Trifturatin

0.1
Ethoprop

0.1



Fonophos

0.1



7-MO-5
-------
I University of Iowa Hygienic Laboratory, Iowa City,
I (September 1987)
I sua
1 Chloraofcen
0.1
I Oieantoa
0.1
Si I vex [2,4,5-TP)
0.1
2,4-D
0.1
2,4,5-T
0.1


Missouri Department of Health laboratory,
(September 19B7>
Jefferson City, Missouri

Silvex

0.017

2,4-D

0.03
i	j-i	
2,4,5*T

0.04
Fesyits Conclusion?
One or more pesticides were detected at 38 of the 124 well sites sampled during the study.
Pesticides detected include the following: alachlor, atrazine, carbaryl, carbofuran, chlordane,
cyanazine, diazinon, fluometuron, linuron, methomyl, metolachlor, metribuzin, molinate,
monocrotophos, paraquat, PCNB, pendimethalin, propachlor, propaml, terbufos, trifluralin,
2,4-D, and 2,4,5,-T. TTiree wells/5 samples had levels of atrazine greater than the MCL, 1
well/sample had levels of alachlor greater than the MCL, 1 well/sample had levels of
metolachlor greater than the MCL, and one well had a level of cyanazine greater than the
MCL The suspected source of contamination was normal field use.
Sievers, Dennis M., and Charles D. Fulhage, Quality of Rural Well Water North Missouri.
Study conducted from December 1987 through September 1988 (Reported September 1989,
32 pp.). Quality of Missouri's Agricultural Groundwater Region II Sampling. Study
conducted December 1989 through September 1990 (Reported June 1991, 70 pp.). Dr.
Dennis M. Sievers, Univ. of Missouri, (314) 882-7855. Dr. Charles D. Fulhage, Univ. of
Missouri, Tel: (314) 882-2731.
Primary Objective
The Missouri Department of Natural Resources conducted this two year sampling survey
provide a data base on the general quality of water from private rural wells in agricultural
areas.
Design
The State was divided into two sampling Regions. Region I is the Norther portion of the
State and included the counties of Atchison, Audrian, Boone, Carrol, Chariton, Cole,
Monroe, Moniteau, Nodaway, Saline, Shelby. Region II consisted of counties in the central
and more Southern portion of the State including Barton, Jasper, Greene, Lafayette,
7-MO-6
-------
Lawrence, Pettis, Saline, Texas, Webster, and Wright. Region I samples were collected from
101 well sites in December 1987, March 1988, May 1988, and December 1988. Region II
samples were collected from 100 well sites in December 1989, March 1990, May 1990, and
September 1990.
The laboratory monitored day-to-day, batch-to-batch sample collection techniques and
general laboratory performance by spiking and analyzing a minimum of 10% of all samples.
In addition, 10% of all samples were analyzed in duplicate (both field and laboratory).
Blanks were analyzed at a rate of 5% of all samples. Analyses were conducted for the
following pesticides.
Pesticide	Mim'mun Detection Limit
Cug/t)
Alachlor
0.2
Atrszine
0.2
Bentazon
0.6
iutylate
0.2
Carberyl
0.2
Carbofuran
0.2
CMordane
0.6
Chlorpyri fos
0.2
Cyanazine
0.2
2,4-D
0.3
Diazirtor
0.3
Ethoprop
0.2
Fooophos [fonofos]
0.3
Heptachtor
0.2
Lindane
0.3
Linuron
0.2
Ma lathion
0.2
Parathion
0.2
Propachlor
0,2
Simazine
0.2
2,4,5-T
0.2
Terixifos
0.3
Toxaphene
0.2
Trifturatin
0.2
7-MO-7
-------
Results and Conclusions
Over the two year sampling period 804 samples were collected from 201 wells. One-
hundred twenty- six (126) samples from 80 wells contained one or more of the pesticide
analytes. The following pesticides were detected: alachlor, atrazine, bentazon, butyl ate,
carbaryl, carbofuran, chlorpyrifos, cyanazine, fonophos, heptachlor, lindane, linuron,
metribuzin, parathion, propachlor, and simazine.
The most frequently detected pesticides were herbicides. The most frequently detected
herbicides were triazines (atrazine, cyanazine, metribuzin). The majority of wells were
single detections of each herbicide. The single most frequently found pesticide was atrazine.
7-MO-8
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
2,4-D to Heptachlor



WELt RESULTS
SAMPLE RESULTS
RANGE Of
CCMCEN-'i¦
TRATlOli'S
PESTICIDE
COUKTr
SATE
TOTAL
WELLS
SAMPLED
U OF
POSITIVE
VELIS"
TOTAL #
'SAMPLES
# OF
POSITIVE
SAMPLES


¥£Att/M0MIH

*
MCL
<
MCL

' -t.
MCL
<
*CL
*
86/11
9
0
0
9
0
0


MONITEAU
87/12; 88/3,5,9
2
0
0
8
0
0


: 'MONROE-^'
87/12; 88/3,5,9
7
0
0
28
0
0


MEVMAOR1D
86/6,11
6
0
0
15
0
0


NEW MADRID
• CPOWP)'
86/11
5
0
0
5
0
0


HOCAWAY
87/12; 88/3,5,9
10
0
0
40
0
0


PEMISCOT
86/6,7,11; 87/9
7
0
0
14
0
0


PETTIS
89/12; 90/3,5,9
1
0
0
4
0
0


saline
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
80
0
0


SCOTT
86/6,7,11; 87/9
16
0
0
29
0
0


SCOTT (POUP)
86/11
11
0
0
11
0
0


- SHEigT^::
87/12; 88/3,5,9
9
0
0
36
0
0

7-MO-9
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
2,4-0 to Heptachlor



viLi'-'REStjLTS
SAMPLE RESULTS
SAiiGE Of
-CGNCEt)
TITRATIONS:';
.1.
PESTICIDE
COUKTY
DATE
TOTAL
WELLS
SAMPLED
* OF
MSIIWE
WELLS
TOTAL *
SAMPLES
ft OF
POSITIVE
SAMPLES


YEW/MONTH

t
KCL
¦¦¦ *
MCL J

I
MCI
<
MCL
C2,*-D>
STOODASP
86/6,7,11; 67/9
12
0
1
22
0
2
0.07-
0,30

TEXAS
89/12; 90/5,5,9
15
0
0
60
0
0


' WEBSTE8
89/12; 90/3,5,9
12
0
0
48
0
0


WRIGHT
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
VEILS/SAMPLES


282
0
6
962
0
7
0.03-1.0

ATCHISON
87/12; 88/3,5,9
16
0
0
64
0
0


AUDRIAfi '
87/12; 88/3,5,9
5
0
0
20
0
0



89/12; 90/3,5,9
3
0
0
12
0
0


aoong
87/12; 88/3,5,9
11
0
0
44
0
0


'SUTLER
86/6,11; 87/9
8
0
1
16
0
1
0.01

}:ciMOll
87/12; 88/3,5,9
27
0
0
108
0
0


. CHAR1TOI -
87/12; 88/3,5,9
6
0
4
24
0
4
0.3-1.0

COLE
87/12; 88/3,5,9
2
0
0
7
0
0


OUHKIIK
86/6,11; 87/9
6
0
3
17
0
3
0.02-
0.41

GREENE
89/12; 90/3,5,9
13
0
0
52
0
0


HOWARD
87/12; 88/3,5,9
3
0
0
12
0
0


JASPER
89/12; 90/3,5,9
12
0
0
48
0
0


LAFAYETTE
89/12; 90/3,5,9
7
0
0
28
0
0


LAWRENCE
89/12; 90/3,5,9
10
0
0
40
0
0


MlS5J SStPPl
86/6,11; 87/9
10
0
1
21
0
1
0.52

'MISSISSIPPI
:fPOWP)
86/11
9
0
0
9
0
0


MONITEAU
87/12; 88/3,5,9
2
0
0
8
0
0


MOtiftoe
87/12; 88/3,5,9
7
0
0
28
0
0


NCW' MADRID
86/6,11
6
0
0
15
0
0


'"NEV- HAOR'it>;:'¦'
86/11
5
0
0
5
0
0


MODAWAT; V
87/12; 88/3,5,9
10
0
0
40
0
0
I
7-MO-lO
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
2,4*D to Heptachlor



'V. Vmi'"R£30tT3:.:.;;::;
SAMPLE RESULTS
-RANGE OF":-i'
CONCEN-
TRATIONS::!

PESTICIDE
COUSTY
DATE
TOTAL
WELtS
SAMPLED
:#.«r
POSITIVE
WELIS
TOTAL #
SAMPLES
n of
POSIIIVE
SWKt.fc3 ¦ :


YEAS/MOUTH

. '*
«CL
<
MCL

t
MCL
<
MCL
<2,4,5-T>
PEMISCOT
66/6,7,11; 87/9
7
0
1
14
0
1
0.02

PETTIS
89/12; 90/3,5,9
1
0
0
4
0
0


SALfNE
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
80
0
0


SCOTT
86/6,7,11; 87/9
16
0
5
29
0
5
0.02-
0.16

5COT1 CPOWP)
86/11
11
0
0
11
0
0


SHELBY
87/12; 88/3,5,9
9
0
0
36
0
0


STOODARP
86/6,7,11; 87/9
12
0
4
22
0
4
0.03-
0.11

• TEXAS
89/12; 90/3,5,9
15
0
0
60
0
0


VEBSTER -
89/12; 90/3,5,9
12
0
0
48
0
0


; wright-..-
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WILLS/SAMPLES


282
0
19
962
0
19
0.01-
0.52
:2>>5r.TP
{Stive*}: -
SUTLER
87/9
4
0
0
4
0
0


OUNKLSD !:
87/9
5
0
0
5
0
0


MISSISSIPPI
87/9
5
0
0
5
0
0


>E«rsc6T.
87/9
2
0
0
2
0
0


SCOTT-
87/9
13
0
0
13
0
0


STOTOAW-irMi
87/9
8
0
0
8
0
0

TOTAL DISCRETE
WELLS/SAMPLES


37
0
0
37
0
0

Alachlor -
. ATCHISON
87/12; 88/3,5,9
16
0
0
64
0
0


' :AI©R1 AH •'
87/12; 88/3,5,9
5
0
2
20
0
3
0.3-0.6

' :BARTOX.".
89/12; 90/3,5,9
3
0
0
12
0
0



87/12; 88/3,5,9
11
0
1
44
0
2
0.55-1.0

BUTt.ER': :
B6/6,11; 87/7
13
0
1
24
0
1
0.01

: CARROLL
87/12; 88/3,5,9
27
0
3
108
0
3
0.4-0.7

CHARJ TON
87/12; 88/3,5,9
6
0
0
24
0
0

7-MO-11
-------
PESTICIDE SAMPLING IN THE STATE Of MISSOURI
2,4-D to Heptachtor
<*




| --SAMPLE RESULTS
*ANCE Of
—¦wtfcBi-v-::-.
ORATIONS
Pcsrtciee
COUKTY
OATE
TOTAL
":-..W£Ll-S :-
'SAMPLED"
#QF
POSITIVE
WE LIS
TOTAL #
SMPLES;
» OF
POSITIVE
SAMPLES


Y£AR/#3ttT#

t
*1
MCL

t
HCt.
MCL
y'.t
(Alachlar)
COLE
87/12; 88/3,5,9
2
0
0
7
0
0


OWJKLIH
86/6,11; 87/7
11
0
0
24
0
0


CRECHE
89/12; 90/3,5,9
13
0
0
52
0
0


HOWARD
87/12; 88/3,5,9
3
0
0
12
0
0


JASPER
89/12; 90/3,5,9
12
0
0
48
0
0


¦ifLAfcAYETIf
89/12; 90/3,5,9
7
0
0
28
0
0


LAWRENCE
89/12; 90/3,5,9
10
0
0
40
0
0


Mississippi
86/6,11; 87/7
16
1
0
32
1
0
22.0

'':Mi'ssissiPPX---
86/11
9
0
0
9
0
0


MONfTfAO'"' -
87/12; 88/3,5,9
2
0
0
8
0
0


H0WTO6'"-
87/12; 88/3,5,9
7
0
0
28
0
0


-HEW HA0R1D
86/6,11; 87/7
17
0
2
33
0
2
0.03-
0.08

'.HEW-MMiWoiv;::
r:(POWe> '
86/11
5
0
0
5
0
0


'MOOAWAV; - ",V "
87/12; 88/3,5,9
10
0
0
40
0
0


PEMISCOT
86/6,7,11; 87/7
13
0
1
22
0
1
0.02

PETTIS
89/12; 90/3,5,9
1
0
0
4
0
0


SALINE •
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
80
0
0


• sco'rr	
86/6,7,11; 87/7
14
0
2
29
0
2
0.3

; SCOTT-"CPDWP):-
86/11
11
0
0
11
0
0



87/12; 88/3,5,9
9
1
0
36
1
0
2.2


86/6,7,11; 87/7
15
0
1
27
0
1
0.1

' ¦ Texas
69/12; 90/3,5,9
15
0
0
60
0
0


WEBSTER
89/12; 90/3,5,9
12
0
0
48
0
0


'WRIGHT :
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
HELLS/SAMPLES


325
2
13 j
1,019 j 2
15
0.01-
22.0
7-MO-12
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
2,4-0 to Heptachlor



veli 8EmTS
It -:SANPtE RESULTS


SAMSE OF '•
COKCEN'
TRATlOMs
PfSHCIOE
cajwrr
DATE
TOTAL
UELLS
SAHRIEO
#-¦OF-
POSITIVE 1
. wits-
(TOTAL#
I SAMPLES
# OF
POSITIVE
•¦-SAMPtES


TEAS/MONTH

s ::
HCt
MCL

¦:wLr.
*CL' - -
Aldrin
5UTIER
86/6
1
0
0
1
0
0


CUHKUK
86/6
1
0
0
1
0
0


«E« HA0RID
86/6
1
0
0
1
0
0


'SCOTT
86/6
1
0
0
1
0
0

TOTAL DISCRETE
WELLS/SAMPLES


4
0
0
4
0
0

Atrsjine
^ AtCfilSOK : -
87/12; 88/3,5,9
16
1
2
64
1
5
0.4-7.2

' AUS#IAM''':;:-
87/12; 88/3,5,9
5
1
3
20
1
6
0.3-15.8

¦amcm
89/12; 90/3,5,9
3
0
0
12
0
0


ia «.•=
87/12; 88/3,5,9
11
0
0
44
0
0


SUTLER
86/6,11; 87/7
13
3
0
24
3
0
6.0-22.5

•CARROtL
87/12; 88/3,5,9
27
1
2
108
4
4
0.3-10.0
II CHARITON
87/12; 88/3,5,9
6
0
0
24
0
0

(II COLE
87/12; 88/3,5,9
2
0
0
7
0
O


DUNKS. tH
86/6,11; 87/7
11
0
3
24
0
3
0.2-0.8
III "GREENE "
89/12; 90/3,5,9
13
0
0
52
0
0


HOWARD
87/12; 88/3,5,9
3
0
0
12
0
O


JASPER
89/12; 90/3,5,9
12
0
2
48
0
2
0.2-0.4

LAFATETTE:
89/12; 90/3,5,9
7
1
2
28
1
2
0.3-4.1

LAURENCE
89/12; 90/3,5,9
10
0
0
40
0
0


MISSISSIPPI :
86/6,11; 87/7
16
1
1
32
1
1
0.1-
150.0

' Mississippi :
:
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
2,4*0 to Heptachlor



r ;:-:;::-seu «s«.ts
SAMPLE RESULTS
SAKS: OF
CONCEN-
TRATIONS
(.US/1)
PESTICIDE
county
DATE
TOTAL
QUELLS'...
* Of
-POSITIVE.
•.••ma
TOTAL #
SAMPLES
* OF
POSITIVE
SAMPLES \ :


TEW/MOUTH

t
HCL
<
HCL

6
HCL
<
*CL
(Atr«iine)
SALINE
87/12; 88/3,5,9
89/12; 90/3,5,9
20
0
1
80
0
2
1.6-1.7

SCOTT
66/6,7,11; 87/7
14
0
0
21
0
0


SCOTT (POWP>
86/11
11
0
0
11
0
0


SHELBY
87/12; 88/3,5,9
9
0
1
36
0
1
0.3

STODDARD
86/6,7,11; 87/7
15
0
1
27
0
1
0.6

TFXA.&
89/12; 90/3,5,9
15
0
1
60
0
1
1.4

WFBSTFR
89/12; 90/3,5,9
12
0
0
48
0
0


WRI6HT
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WELLS/SAMPLES


325
9
22
1,019
13
31
0.1-
150.0
¦8entaidn::..r
ATCHISOf.
87/12; 88/3,5,9
16
0
0
64
0
0



87/12; 88/3,5,9
5
0
0
20
0
0


8ARTOK
89/12; 90/3,5,9
3
0
0
12
0
0


eoojE
87/12; 88/3,5,9
11
0
0
44
0
0


SUTLER
86/6,11
5
0
0
11
0
0


: CARROLL
87/12; 88/3,5,9
27
0
1
108
0
2
0.6-0.8

CHARITON
87/12; 88/3,5,9
6
0
3
24
0
3
0.9

.":-ceie '
87/12; 88/3,5,9
2
0
0
7
0
0


OUNKLIN
86/6,11
5
0
0
11
0
0



89/12; 90/3,5,9
13
0
0
52
0
0


HOWARD
87/12; 88/3,5,9
3
0
0
12
0
0


¦jASPER'":'
89/12; 90/3,5,9
12
0
0
48
0
0


LAFAYETTE . :
89/12; 90/3,5,9
7
0
0
28
0
0


LAWRENCE.
89/12; 90/3,5,9
10
0
0
40
0
0


NISStSiS 1PP1
86/6,11
7
0
0
16
0
0


N! SSISS.lPPJ
IPOUfi-
86/11
9
0
0
9
0
0


MONITEAU
87/12; 88/3,5,9
2
0
0
8
0
0


MONROE
87/12; 88/3,5,9
7
0
0
28
0
0


:nem:haorid
86/6,11
6
0
0
14
0
0

7-MO-14
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
2,4*0 to Heptachlor



i£LL 8ES1H.TS
SAMPLE RESULTS
SANGE OF
CONCEN-
TRATIONS

PESTICIDE
COUMTir
DATE
TOTAL
mis
SAMPLED
# OF :: v
pcsiriv*
VELU
TOTAL #
SAMPLES
# OF
POSITIVE
SAMPLES


YEAR/MONTH

¦ i
HCL
< '
net:

i
Ma
-<
MCI
(Bemezon)
*E« JtAORJD
: CPSUP J
86/11
5
0
0
5
0
0


HOD AWAY
87/12; 88/3,5,9
10
0
1
40
0
1
1.0

PEMISCOT
86/6,11
5
0
0
11
0
0


:*rras
89/12; 90/3,5,9
1
0
0
4
0
0


SAL iMt
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
80
0
0


ricofty.
86/6,11
6
0
0
14
0
0


: SCOTRPDVP)
86/11
11
0
0
11
0
0



87/12; 88/3,5,9
9
0
0
36
0
0



86/6,11
6
0
0
13
0
0


TEXAS
89/12; 90/3,5,9
15
0
0
60
0
0


WEBSTER
89/12; 90/3,5,9
12
0
0
48
0
0


-WRIGHT- - - -
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WILLS/SAMPLES


266
0
5
918
0
6
0.6-1.0
Butyl ate!;:.!-
'ATCfiisai.v:-:
87/12; 88/3,5,9
16
0
0
32
0
0


: ALttSRIAM -
87/12; 88/3,5,9
5
0
0
10
0
0


'BARTO*.'"'-
89/12; 90/3,5,9
3
0
0
12
0
0


:iooki
87/12; 88/3,5,9
11
0
0
22
0
0


SUTLER
87/7
12
0
0
12
0
0


-CARROLL
87/12; 88/3,5,9
27
0
0
54
0
0


CHARITON
87/12; 88/3,5,9
6
0
0
12
0
0


cidt E; --: "¦ -'"=:
87/12; 88/3,5,9
2
0
0
3
0
0



87/7
11
0
0
12
0
0



89/12; 90/3,5,9
13
0
0
52
0
0


howard-;:
87/12; 88/3,5,9
3
0
0
6
0
0


'JASPER
89/12; 90/3,5,9
12
0
0
48
0
0


LAFAYETTE f
89/12; 90/3,5,9
7
0
0
28
0
0


LAVRENCE
89/12; 90/3,5,9
10
0
0
40
0
0


MISSISSIPPIL
87/7
16
0
0
16
0
0


HONITEMI
87/12; 88/3,5,9
2
0
0
4
0
0

7-MO-15
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
2,4-D to Heptachlor



IELL RESULTS
SAMPLE RESULTS
9AMSE OF
CONCEN-
TRATIONS
Ots/U
PESTJCfQE
couxir
&ATE
TOTAL
t£LLS
SAMPLED
# OF
POSITIVE
WHS
: total f
¦; SAMPLES
# OF
POSITIVE
SAMPLES


TEAR/MONTH

i
«CL
NCL

' S
MCL
MCL
(Butylate)
Ihonroe
87/12; 88/3,5,9
7
0
0
14
0
0


;kew hadrid •
87/7
17
0
0
18
0
0


NOOAWAf
87/12; 88/3,5,9
10
0
1
20
0
1
0.87

: mm i scot
87/7
10
0
0
10
0
0


-PEifrs
89/12; 90/3,5,9
1
0
0
4
0
0


SALINE
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
74
0
0


-SCOTT
87/7
13
0
0
13
0
0


'sreter
87/12; 88/3,5,9
9
0
0
18
0
0


stood aw-L:.
87/7
13
0
0
13
0
0


:¦ TEXAS'-'"-.
89/12; 90/3,5,9
15
0
0
60
0
0


:¦ WEBSTER'.. ¦
89/12; 90/3,5,9
12
0
0
48
0
0



89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WELLS/SAMPLES


293
0
1
697
0
1
0.87
Carbarylv -
- ATCHJSOH
87/12; 88/3,5,9
16
0
0
64
0
0


AUPR1 AH "
87/12; 88/3,5,9
5
0
1
20
0
2
0.27-0.4

8ARTOS
89/12; 90/3,5,9
3
0
0
12
0
0


BOONE
87/12; 88/3,5,9
11
0
0
44
0
0


SUTLER
86/6,11; 87/7
13
0
0
23
0
0


¦CARROLL " -V -:
87/12; 88/3,5,9
27
0
3
108
0
3
0.4-1.1

:C#ARrTO»
87/12; 88/3,5,9
6
0
2
24
0
2
0.3

COLE
87/12; 88/3,5,9
2
0
0
7
0
O


DUNKLIN
86/6,11; 87/7
11
0
0
22
0
0


:GREENE
89/12; 90/3,5,9
13
0
0
52
0
0


HOWARD
87/12; 88/3,5,9
3
0
1
12
0
1
0.2

^•JASPER'.'---
89/12; 90/3,5,9
12
0
0
48
0
0


LAFAYETTE
89/12; 90/3,5,9
7
0
1
28
0
1
1.0

•LAWRENCE'
89/12; 90/3,5,9
10
0
0
40
0
0


.Mississippi::"
86/6,11; 87/7
16
0
1
32
0
1
0.3

MISSISSIPPI
"{PCyp>;r-r::'-
86/11
9
0
0
9
0
0

7-MO-16
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
2,4-D to Heptachlor



:>:;^VteU:«ESjJlT$
SAMPLE RESULTS
' RANGE Of
CONCEN-
TRATIONS
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
2,4-D to Heptachlor



WELL BESOLTS
SAMPLE RESULTS
SAUCE OF
COKCfll-
TRATICJS
CM/l)
. PESTICIDE
COUtfTT
DATE
TOTAL
WELLS
SAMPLED
# OF
POS5T1VF
WELLS
TOTAL *
SAMPLES
# OF
POSITIVE
SAMPLES


TEA*/MONTH

i
«CL
<
HCL

*
Ma
4
HCL
(C»rbofur«n)
LAWRENCE
89/12; 90/3,5,9
10
0
0
40
0
0


^MISSISSIPPI
86/6,11; 87/7
16
0
0
32
0
0


MissrssiPPi
\*PDWP>--'
86/11
9
0
0
9
0
0


MOTITEAu
87/12; 88/3,5,9
2
0
0
8
0
0


MONROE
87/12; 88/3,5,9
7
0
0
28
0
0


NEW MADRID
86/6,11; 87/7
17
0
1
32
0
1
2.0

tlEW'tWRlft '
86/11
5
0
0
5
0
0


HODAWAT¦::
87/12; 88/3,5,9
10
0
0
40
0
0


PEWI SCOT
86/6,7,11; 87/7
13
0
0
22
0
0


PETTIS
89/12; 90/3,5,9
1
0
0
4
0
0


SALillE
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
80
0
0


¦SCOTT
86/6,7,11; 87/7
14
0
0
28
0
0


SCOTT CPOUF)
86/11
11
0
0
11
0
0


.'SHELBY
87/12; 88/3,5,9
9
0
1
36
0
1
0.5

'.STODDARD •>"
86/6,7,11; 87/7
15
0
0
27
0
0


TEXAS:-:'
89/12; 90/3,5,9
15
0
0
60
0
0


WE9STES
89/12; 90/3,5,9
12
0
0
48
0
0


W*1GHT
89/12; 90/3,5,9
10
0
0
40
0
0

"TOTAL DISCRETE
WEILS/SAMPLES


325
0
7
1,015
0
7
0.2-13.3
'CMbramben":
butler-}' '^v-'
87/9
1
0
0
1
0
0


-::00N
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
2,4-0 to Heptachlor



UELL RESULTS
SAMPLE RESULTS
RANGE Of
.O0NCEW-
: orations
(M/l)
ffSTICIOE
. ^ .COUNT?
0A7E
TOTAL
WSILS
SAMPLED
# or
POSITIVE
WELLS .
TOTAL*
SAMPLES
# OF
posnistf
SAMPLES :


YeAR/WO»fTH

S
#ct
<
NCL

....•> ..
MCt
<
#Cl'
CMordane
; ATOHSOH
87/12; 88/3.5.9
16
0
0
64
0
0
I

i-AUDRlAN
87/12; 88/3,5,9
5
0
0
20
0
0


'(:$*# ro*
89/12; 90/3,5,9
3
0
0
12
0
0


8Q0KE
87/12; 88/3,5,9
11
0
0
a
0
0


8UTIER
86/6,11
5
0
1
12
0
1
0.02

CARROLL
87/12; 88/3,5,9
27
0
0
108
0
0


CHARJTOH
87/12; 88/3,5,9
6
0
0
24
0
0


COLE
87/12; 88/3,5,9
2
0
0
7
0
0


OUNKLSM
86/6,11
5
0
1
12
0
1
0.07

.:;«RE£»E.
89/12; 90/3,5,9
13
0
0
52
0
0


V-HDMAR8-
87/12; 88/3,5,9
3
0
0
12
0
0


JASPER
89/12; 90/3,5,9
12
0
0
48
0
0


UFAfFTTt
89/12; 90/3,5,9
7
0
0
28
0
0


LAWRENCE
89/12; 90/3,5,9
10
0
0
40
0
0


MISSISSIPPI
86/6,11
7
0
0
16
0
0


Nrsiissippi
(powp)
86/11
9
0
0
9
0
0


NONSTEAtl
87/12; 88/3,5,9
2
0
0
8
0
0


-/XOMRCT
87/12; 88/3,5,9
7
0
0
28
0
0


ilEW'KAORlD
86/6,11
6
0
0
15
0
0


Jj£U MADRID
v
-------
PESTICIDE SAMPLING IN THE STATE OF RISSQURI
2,4-D to Heptaehlor



WELL RESULTS
SAMPLE RESULTS
8ANGE OF
... CONCEN* :
. TRATIONS
:
PESTICIDE
COUMTr
DATE
TOTAL¦
.. ..WEUtS -
SAMPLED
# or
POSITIVE
WELLS
TOTAL #
SAMPLES
# Of
POSITIVE
SAMPLES ; .-/


TEAS/MOUTH

• i ' -:
MCL

Ma
no.:
(Chlordane)
WEBSTER
89/12; 90/3,5,9
12
0
0
48
0
0


VRICHT
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WELLS/SAHPLES


269
0
3
925
0
3
0.02-
0.09
ChtorpyH los
ATCHJSW
87/12,- 88/3,5,9
16
0
0
64
0
0


AUDR1AV
87/12; 68/3,5,9
5
0
0
20
0
0


;8ART0#
89/12; 90/3,5,9
3
0
0
12
0
0


:aoo*E
87/12; 88/3,5,9
11
0
0
44
0
0


SUTLER
66/6,11; 87/7
13
0
0
24
0
0


CARROLL
87/12; 88/3,5,9
27
0
0
108
0
0


; cKARiroti
87/12; 88/3,5,9
6
0
1
24
0
1
0.2

COLE :
87/12; 88/3,5,9
2
0
0
7
0
0


DUNKLIN •
86/6,11; 87/7
11
0
0
24
0
0


"GREENE
89/12; 90/3,5,9
13
0
0
52
0
0


HOWARD ¦
87/12; 88/3,5,9
3
0
0
12
0
0


JASPER
89/12; 90/3,5,9
12
0
0
48
0
0


LAFAYETTE
89/12; 90/3,5,9
7
0
0
28
0
0


LAVREMCE
89/12; 90/3,5,9
10
0
0
40
0
0


MISSISSIPPI
86/6,11; 87/7
16
0
0
32
0
0


MISSISSIPPI
(powp)
86/11
9
0
0
9
0
0


MOMITEAU : :
87/12; 88/3,5,9
2
0
0
8
0
0


: MONROE- :
87/12; 88/3,5,9
7
0
0
28
0
0


HEW HA0R1D
86/6,11; 87/7
17
0
0
33
0
0


HEW MADRID
: tPDUPJ
86/11
5
0
0
5
0
0


NODAWAY
87/12; 88/3,5,9
10
0
0
40
0
0


PEMISCOT
86/6,7,11; 87/7
13
0
0
22
0
0


PETTIS
89/12; 90/3,5,9
1
0
0
4
0
0


SALINE
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
80
0
0


SCOTT
86/6,7,11; 87/7
14
0
0
29
0
0

7-MO-20
-------
PESTICIDE SWUNG IN THE STATE OF MISSOURI
2,4-0 to Heptachlor



VEU RESULTS
SAMPLE RESULTS
RANGE OF
COKCEV-
TRAT10NS
{W/l>
PCSTICIOE
- caikiy
8ATE
TOTAL
WELtS
SAMPLED
9 OF
POSITIVE
WELLS
TOTAL f
SAMPiES
f OF
POSITIVE
SAMPLES


TEAK/WONTH

t
MCL
MCL

*
Ma
A
MCL
(Chlorpyrifos)
SCOTT CPDUP)
86/11
11
0
0
11
0
0


SKEt«*
87/12; 88/3,5,9
9
0
0
36
0
0


StCOOAfiD
86/6,7,11; 87/7
15
0
0
27
0
0


TEXAS
89/12; 90/3,5,9
11
0
0
60
0
0


webster
89/12; 90/3,5,9
12
0
0
48
0
0


WRIGHT
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WEUS/SAMPIES


325
0
1
1,019
0
1
0.2
viCyaraiine'-^^V''-
-ATCHISON
87/12; 88/3,5,9
16
0
1
64
0
1
0.6

AUORIAN
87/12; 88/3,5,9
5
0
0
20
0
0


8AS70N
89/12; 90/3,5,9
3
0
0
12
0
0


VSOOKE
87/12; 88/3,5,9
11
1
5
44
1
8
0.26-1.0

8UTU8
86/6,11; 87/7
13
0
0
23
0
0


CARROLL
87/12; 88/3,5,9
27
2
8
108
2
9
0.3-1.1

CHARITON
87/12; 88/3,5,9
6
0
3
24
0
3
0.3

'vibli '
87/12; 88/3,5,9
2
0
2
7
0
2
0.3

¦ BUUKLIN
86/6,11; 87/7
11
0
0
22
0
0


:;CREEHE
89/12; 90/3,5,9
13
0
0
52
0
0


; 80WAR0
87/12; 88/3,5,9
3
0
3
12
0
3
0.3-0.6

JASPER
89/12; 90/3,5,9
12
0
0
48
0
0


LAFAXETTE
89/12; 90/3,5,9
7
0
0
28
0
0


LAVSENCE
89/12; 90/3,5,9
10
0
0
40
0
0


MISSISSIPPI
86/6,11; 87/7
16
1
1
32
1
2
0.5-1.2

msisissippi
WW!
86/11
9
0
0
9
0
0


MONITEAU
87/12; 88/3,5,9
2
0
0
8
0
0


HOWROE
87/12; 88/3,5,9
7
0
0
28
0
0


••'WEWi'HADRlO
86/6,11; 87/7
17
0
2
32
0
2
0.2-0.8

MEW H ADR ID
CPDWP>
86/11
5
0
0
5
0
O


kCoawat
87/12; 88/3,5,9
10
1
1
40
1
1
0.24-1.0

PEXISCOT
86/6,7,11; 87/7
13
0
0
22
0
0

7-MO-21
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
2,4-0 to Heptachlor



WELL RESULTS :
SAMPLE RESULTS. .
RANGE:'Of-L:
CbMCRI*: i:
' T RAT IONS
PE5TIC19E
cousrr
DATE
. TOTAL
weus
SAMPLED
# or
POSITIVE
WELLS
TOTAL #
SAMPLES
* OF
POSITIVE
SAMPLES


rEA#/*ONTH

¦ j."
tfCL
KCL

i
KCL
* .
XCL
(Cysrvaifne)
PETTIS
89/12; 90/3,5,9
1
0
0
4
0
0


SALINE
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
1
4
80
1
4
0.3-1,2

SCOTT
86/6,7,11; 87/7
14
0
0
28
0
0


SCOTT fPDUP >
86/11
11
0
0
11
0
0


-SHELB*
87/12; 88/3,5,9
9
0
1
36
0
1
0.28

STOOOARD
86/6,7,11; 87/7
15
0
0
27
0
0


TEXAS
89/12; 90/3,5,9
15
0
0
60
0
0


WEBSTER
89/12; 90/3,5,9
12
0
0
48
0
0


URIGHT
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WELLS/SAHPLES


325
6
31
1,015
6
36
0.2-1,2

8UTLER
86/6
5
0
0
5
0
0


fiUUKLItl
86/6
5
0
0
5
0
0


MISSISSIPPI
86/6
7
0
0
8
0
0


NEWJWDRIO : '
86/6
6
0
0
7
0
0


¦ :-r -r •
86/6
5
0
0
6
0
0


SCOTT
86/6
6
0
0
7
0
0


: 'STOODARD^.'.v . '
86/6
6
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


40
0
0
45
0
0

DDT
•'BliTltjf'
86/6
1
0
0
1
0
0


OUNUltf
86/6
1
0
0
1
0
0


HE* MADRID -
86/6
1
0
0
1
0
0


S«rT.:.}::.3
86/6
1
0
0
1
0
0

TOTAL DISCRETE
WELLS/SAMPLES


4
0
0
4
0
0


BUTLER
86/6
1
0
0
1
0
0


- OLtmiN . :
S6/6
1
0
0
1
0
0


i-iu'Etf MADRID
86/6
1
0
0
1
0
0


- scon. :'-: v
86/6
1
0
0
1
0
0

TOTAL DISCRETE
WELLS/SAMPLES


4
0
0
4
0
0

7-MO-22
-------
PESTICIDE SMPLING IM THE STATE Of MISSOURI
2,4-D to Heptachlor



WELL RESULTS
SAMPLE RESULTS
RANGE OF
CONCEN-
TRATIONS
>:
89/12; 90/3,5,9
3
0
0
12
0
0


. BOONE-
87/12; 88/3,5,9
11
0
1
44
0
1
0.3

SUTLER -v -
86/6,11; 87/7
13
0
0
24
0
0


: CARROLL'
87/12; 88/3,5,9
27
1
1
108
1
1
0.4-0.7

tfiARlTON
87/12; 88/3,5,9
6
1
1
24
1
1
0.3-1.0

COLS
87/12; 88/3,5,9
2
0
0
7
0
0


bUHKL'IV
86/6,11; B7/7
11
0
2
24
0
3
0.2-0.3

CREEHE
89/12; 90/3,5,9
13
0
0
52
0
0


• HOWARD
87/12; 88/3,5,9
3
0
0
12
0
0


JASPER
89/12; 90/3,5,9
12
0
0
48
0
0


LAFAYtlTE
89/12; 90/3,5,9
7
0
0
28
0
0


U*WSENc£:';\;-'-:'
89/12; 90/3,5,9
10
0
0
40
0
0


" Mississippi :
86/6,11; 87/7
16
0
0
32
0
0


"mssmtppi
tPDUP)
86/11
9
0
0
9
0
0

7-MO-23
-------
PESTICIDE SWUNG IN THE STATE OF MISSOURI
2,4-D to Heptaehlor
1


WELL. RESULTS-'-

SAW PIE RESULTS
SANCE Of
CONCEN-
TRATIONS
<*g/D .
PESTICIDE
COUNTr
DATE
TOTAL
¦ rmis
SAWPtEO
# OF
POSIT!'
WELLS
it
TOTAL #
SAMPLES
*•:# OF o: '
POSITIVE
SAMPLES


TEAS/MONTH

i
HCL
<
NCL.

S
.-.Ma.
<
:*CL .
(Dlazlron)
MONITEAU
87/12; 88/3,S,9
2
0
0
8
0
0


MONROE
87/12; 88/3,5.9
7
0
0
28
0
0


DEW MACftll?
86/6,11; 87/7
17
0
0
33
0
0


liEW MADRIP
:
86/11
5
0
0
5
0
0

7-MO-24
-------
PESTICIDE SAMSUNG IM THE STATE OF MISSOURI
2,4-D to Heptachtor



WELL RESULTS
SANPLE RESULTS
RANGE Of
" CONCCNv'
TRAT TONS :¦
{*3/1)
PESTICIDE
cauurr
DATE
TOTAL
WELLS
SAMPLED
# OF
POSITIVE
writs
TOTAL #
SAMPLES
# Of
POSITIVE
SAHPLFS

-
rEAfi/WMTH ~

HCL
*

fc
MO.
4
HCl
(Dimethoate)
SCOTT
66/6,7,11
7
0
0
15
0
0


scon crow?)
86/11
11
0
0
11
0
0


STOOCARO
86/6,7,11
7
0
0
14
0
0

TOTAL DISCRETE
Wfl 1 C/14MPI


68
0
0
118
0
0

fndrjn
:«0Ttfft;-
86/6
1
0
0
1
0
0


&UNICL1N
86/6
1
0
0
1
0
0


NEW HADRID '
86/6
1
0
0
1
0
0


SCOTT
86/6
1
0
0
1
0
0

TOTAL DISCRETE
WILLS/SAMPLES


4
0
0
4
0
0

•iStb'eprcp
ATCHJSON
87/12; 88/3,5,9
16
0
0
64
0
0


AU0R1AW
87/12; 88/3,5,9
5
0
0
20
0
0



89/12; 90/3,5,9
3
0
0
12
0
0


;800XE r;
87/12; 88/3,5,9
11
0
0
44
0
0


:aufifc*.-
87/7
12
0
0
12
0
0


CAR ROIL
87/12; 88/3,5,9
27
0
0
108
0
0


CHARITON
87/12; 88/3,5,9
6
0
0
24
0
0


COLE
87/12; 88/3,5,9
2
0
0
7
0
0


DUXXIIH
87/7
11
0
0
12
0
0


'.GRE£N6'\ /
89/12; 90/3,5,9
13
0
0
52
0
0


HOWARD .
87/12; 88/3,5,9
3
0
0
12
0
0


¦JASPER '
89/12; 90/3,5,9
12
0
0
48
0
0


LAF*YETTf •
89/12; 90/3,5,9
7
0
0
28
0
0


LAWRENCE . .
89/12; 90/3,5,9
10
0
0
40
0
0


MISSISSIPPI
87/7
16
0
0
16
0
0


Moniteau
87/12; 88/3,5,9
2
0
0
8
0
0


MONROE , .
87/12; 88/3,5,9
7
0
0
28
0
0


HEW MAORIB
87/7
17
0
0
18
0
0


UOOAWAy
87/12; 88/3,5,9
10
0
c
40
0
0


PEKISCOT
87/7
10
0
0
10
0
0

7-MO-25
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
2,4-0 to Heptachlor



VELt RESULTS
SAMPLE RESULTS
SAXGE OF
COftCEU-
TRATIOHS
<*3/1>
PESTICIDE
cournr
DATE
; TOTAL
SMELLS
SANPIED
# Of
PCS!TIV£
WELLS
TOTAL #
SAMPLES
» OF
PCSlTIVf
SAMPLES


YtAft/NOtJTH

5
KCl
"¦¦ ¦ < ¦
J»Cl

e
MCL
¦<
. KCL
(Ethoprop)
PETTIS
69/12; 90/3,5,9
1
0
0
4
0
0


SALiXE
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
80
0
0


scon
87/7
13
0
0
13
0
0


SKEL8Y
87/12; 88/3,5,9
9
0
0
36
0
0


STOODARO
87/7
13
0
0
13
0
0


TEXAS
89/12; 90/3,5,9
15
0
0
60
0
0


WEBSTER -
89/12; 90/3,5,9
12
0
0
48
0
0


WRIGHT
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WELLS/SAMPLES


293
0
0
897
0
0

f luometuron

86/6.11
5
0
0
11
0
0


©UMICLI1H
86/6,11
5
0
1
11
0
1
0.8

«tS«tSS£fpr
86/6,11
7
0
0
16
0
0


; MISSISSIPPI^:
86/11
9
0
0
9
0
0


'MEW.wiOBlD''-:'--
86/6,11
6
0
0
14
0
0


(PDyP)
86/11
5
0
0
5
0
0


Pemiscot
86/6,7,11
6
0
0
12
0
0


SCOTT
86/6,7,11
7
0
0
15
0
0


SCOTT mupy
86/11
11
0
0
11
0
0


STCDOARD-:r-
86/6,7,11
7
0
0
14
0
0

TOTAL DISCRETE
WELLS/SAMPLES


68
0
1
118
0
1
0.8
fonoftii
ATCHISON!
87/12; 88/3,5,9
16
0
0
64
0
0


AIDRIAN
87/12; 88/3,5,9
5
0
0
20
0
0


BARTON '
89/12; 90/3,5,9
3
0
0
12
0
0


SOCftE
87/12; 88/3,5,9
11
0
0
44
0
0


BUTLER '
87/7
12
0
0
12
0
0


CARROLL
87/12; 88/3,5,9
27
0
1
108
Q
1
0.43

CHARITOH
87/12; 88/3,5,9
6
0
0
24
0
0

7-MO-2 6
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
2,4-D to Heptachlor



UELL RESULTS
SAMPLE RESULTS
RANGE OF
CDKCEW-
TRATIONS
PESTICIDE
coumr
DATE
TOTAL
WELLS
SAMPLED
¦ # or
POSITIVE
VFLLS
Total f
SAMPLES
# Of
positive
SAMPLES


r£A#/MONT»

> ::
MCL
V o
X,

S
Ma
•<
MCL
(Fooofos)
COLE
87/12; 88/3,5,9
2
0
0
7
0
0


PUNKLM
87/7
11
0
0
12
0
0



89/12; 90/3,5,9
13
0
0
52
0
0
	

HOUAEB
87/12; 88/3,5,9
3
0
0
12
0
0

JASPER
89/12; 90/3,5,9
12
0
0
48
0
0


¦ LAFATETTI
89/12; 90/3,5,9
7
0
0
28
0
0


: LAWREMCE
89/12; 90/3,5,9
10
0
0
40
0
0


? MISSISSIPPI
87/7
16
0
0
16
0
0


MONITEAU
87/12; 88/3,5,9
2
0
0
8
0
0


MONROE
87/12; 88/3,5,9
7
0
0
28
0
0


¦'iMEW MADRID
87/7
17
0
0
18
0
0


: NODAWAY
87/12; 88/3,5,9
10
0
0
40
0
0


PEMISCOT
8 7/7
10
0
0
10
0
0


PETUS
89/12; 90/3,5,9
1
0
0
4
0
0


SAL I HE
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
40
0
0


scon
87/7
13
0
0
13
0
0


SHELBY
87/12; 88/3.5,9
9
0
0
36
0
0


STOOOARD
87/7
13
0
0
13
0
0


TEXAS
89/12; 90/3,5,9
15
0
0
60
0
0


WEBSTER ' .
89/12; 90/3,5,9
12
0
0
48
0
0


WRIGHT
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WELLS/SAMPLES


293
0
1
897
0
1
0.43
Glyphosate : i.V:'
SUTLER
86/6
5
0
0
5
0
0


"DUNKLIN
86/6
5
0
0
5
0
0


^MISSISSIPPI
86/6
7
0
0
8
0
0


HFW XADR1D
86/6
6
0
0
7
0
0


;pem I SCOT
86/6
5
0
0
6
0
0

7-MO-27
-------
PESTICIDE SAMPLING IH THE STATE OF MISSOURI
2,4-D to Heptachior



WELL RESULTS
•' SAMPLE RESULTS
RANGE Of
CONCEIT- .
I RATIONS
Ug/i)
PESTICIDE
couxTr
DATE
; TOTAL
•::«lls
SAMPLED '
# OF
POSITIVE
UELLS
TOTAL #
SAMPLES
# OF
POSITIVE
SAMPLES.


TEAR/KOMtH

i
ffCL
¦ <
HCL

£
MO.
HCL
(Glyphosate)
SCOTT 	
86/6
6
0
0
7
0
0


STOOOARB
86/6
6
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


40
0
0
45
0
0


ATC^ISOH . .
87/12; 88/3,5,9
16
0
0
64
0
0


AUDtfA#
87/12; 88/3,5,9
5
0
0
20
0
0


SARTON
89/12; 90/3,5,9
3
0
0
12
0
0


BOOHE
87/12; 88/3,5,9
11
0
0
44
0
0


;aurtER
86/6
1
0
0
1
0
0


CARROLL
87/12; 88/3,5,9
27
1
0
108
1
0
0.5

CHARITON
87/12; 88/3,5,9
6
0
0
24
0
0


COLE
87/12; 88/3,5,9
2
0
0
7
0
0


DUNKLiN
86/6
1
0
0
1
0
0


GRFENE
89/12; 90/3,5,9
13
0
0
52
0
0


HOWARD
87/12; 88/3,5,9
3
0
0
12
0
0


JASPER
89/12; 90/3,5,9
12
0
0
48
0
0


"LAFAYETTE
89/12; 90/3,5,9
7
0
0
28
0
0


IAVREHCE
89/12; 90/3,5,9
10
0
0
40
0
0


MONITEAU
87/12; 88/3,5,9
2
0
0
8
0
0


•HOKROE
87/12; 88/3,5,9
7
0
0
28
0
0


«ew «aor;o
86/6
1
0
0
1
0
0


: liODA'-Ar
87/12; 88/3,5,9
10
1
0
40
1
0
0.4

PETTIS
89/12; 90/3,5,9
1
0
0
4
0
0


SALINE
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
80
0
0


•scon
86/6
1
0
0
1
0
0


: SHEL8Y ¦ ¦
87/12; 88/3,5,9
9
1
0
36
1
0
o.a

-TEXAS
89/12; 90/3,5,9
15
0
0
60
0
0


WEBSTER-; '
89/12; 90/3,5,9
12
0
0
48
0
0


vBUGHf
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WELLS/SAMPLES


205
3
0
807
3
0
0.4-0.8
7-MO-2 8
-------
PESTICIDE SAMPLING IN THE STATE Of MISSOURI
Lindane to Trifluratin



UEtL RESULTS
SAMPLE RESULTS
RANGE OF
COMCEH-
TRATIONS
(US/0
PESTICIDE
countr
DATE
TOTAL.
WELLS
SAMPLED
# Of
POSITIVE
WELLS
TOTAL U
SAMPLES
* OF
POSITIVE
SABLES


YEAR/HOfc'TB

I
HCt
*
HCL

HCL
*
HO.
Lindane
/-ATC81SON
87/12; 88/3,5,9
16
0
0
64
0
0


AUORIAW
87/12,- 88/3,5,9
5
0
0
20
0
0


SARIO
89/12; 90/3,5,9
3
0
0
12
0
0


VSOONE
87/12; 88/3,5,9
11
0
0
44
0
0


SUTLER *
86/6
1
0
0
1
0
0


CARROLL
87/12; 88/3,5,9
27
0
0
108
0
0


CHARITON
87/12; 88/3,5,9
6
0
0
24
0
0


COLE
87/12; 88/3,5,9
2
0
0
?
0
0


DUNKi.ru
86/6
1
0
0
1
0
0


CREEME
89/12; 90/3,5,9
13
0
0
52
0
0


HOWARD
87/12; 88/3,5,9
3
0
0
12
0
0


JASPER
89/12; 90/3,5,9
12
0
0
48
0
0


-"LAFAYETTE
89/12; 90/3,5,9
7
1
0
28
1
0
0.5

LAWRENCE:
89/12; 90/3,5,9
10
0
0
40
0
0


MONITEAU
87/12; 88/3,5,9
2
0
0
8
0
0


NOWOE
87/12; 88/3,5,9
7
0
0
28
0
0


•NEW *At)Rlf>
86/6
1
0
0
1
0
0


NODAWAY
87/12; 88/3,5,9
10
0
0
40
0
0


'-iPETTtsi:
89/12; 90/3,5,9
1
0
0
4
0
0


::SAt riir:: -J.: * U":
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
80
0
0


- SCOTT
86/6
1
0
0
1
0
0


SHELBY: ¦r'¦:
87/12; 88/3,5,9
9
0
0
36
0
0


/Texas-:"-
89/12; 90/3,5,9
15
0
0
60
0
0


•«eesVe#"::' " '
89/12; 90/3,5,9
12
0
0
48
0
0


; WRIGHT.
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WEILS/SAMPLES


205
1
0
645
1
0
0.5

• ATCHISOiK
87/12; 88/3,5,9
16
0
4
64
0
4
0.48*0.6

1 AUDR1 AN ;
87/12; 88/3,5,9
5
0
1
20
0
1
1 0.6
7-MO-29
-------
PESTICIDE SWUNG IK THE STATE OF MISSOURI
Lindane to Trifluralin



WEIL RESULTS
SAKPLE RESULTS
RANGE OF
COIiCCH-
TRAT50NS
GtS/l>
PESTICIDE
COUNTY
DATE
TOTAL
WELLS
SAMPLED
# OF
POSITIVE
WELLS
TOTAL #
SAMPLES
* OF
POSITIVE
SAMPLES
... v

YEAR/MWTH

I
HCL
' < .
MCL

m
Ma
(Linuron)
8A«TW
89/12; 90/3,5,9
3
0
0
12
0
0


BOOSE
87/12; 88/3,5,9
11
0
6
U.
0
6
0.5-0.6

8UTl£ft
86/6,11
5
0
1
11
0
1
0.2

CAR ROIL
87/12; 88/3,5,9
27
0
11
108
0
13
0.5-0.7

CRARITOX
87/12; 88/3,5,9
6
0
4
24
0
5
0.3

COLE
87/12; 88/3,5,9
2
0
1
7
0
1
0.5

DUNKlIK
86/6,11
5
0
0
11
0
0


CREENE
89/12; 90/3.5.9
13
0
0
52
0
0


HOWARD
87/12; 88/3,5,9
3
0
0
12
0
0


JASPER
89/12; 90/3,5,9
12
0
0
48
0
0


tAFATETTE
89/12; 90/3,5,9
7
0
1
28
0
1
1.9

jLAWRtNCE
89/12; 90/3,5,9
10
0
0
40
0
0


MISSISSIPPI
86/6,11
7
0
0
16
0
0


.MISSISSIPPI •
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
Lindsrw to Triflurilin



WELL RESULTS
SAMPLE RESULTS
BANCS Of
CONCEN-
TRATIONS

' 'resrtet&E
COUNT*
&AT£
TOTAL
WELLS
SAILED
# Of
POSITIVE
WELLS
TOTAL «
SAMPLES
i OF
POSITIVE
SAHPLES


YEAR/MONTH

I
net
MCL

i
#ct
wa
CLInuron)
MEfiSTES
89/12; 90/3,5,9
12
0
0
48
0
0


WIGHT
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRITE
WELLS/SAMPLES


269
0
38
921
0
41
0.2-1.9

ATCHISON
87/12; 88/3,5.9
16
0
0
64
0
0


AUORHW
87/12; 88/3,5,9
5
0
0
20
0
0


SARTQtt
89/12; 90/3,5,9
3
0
0
12
0
0


80CWE
87/12; 88/3,5,9
11
0
0
U
0
0


¦ 8UTt«
86/6,11
5
0
0
11
0
0


CARROLL
87/12; 88/3,5,9
27
0
0
108
0
0


CHARlTOfc
87/12; 88/3,5,9
6
0
0
24
0
0


COLE
87/12; 88/3,5,9
2
0
Q
7
0
0


DUNKLIN
86/6,11
5
0
0
11
0
0


• "GREENE
89/12; 90/3,5,9
13
0
0
52
0
0


HOWARD
87/12; 88/3,5,9
3
0
0
12
0
0


JASPER
69/12; 90/3,5,9
12
0
0
48
0
0


LAFAYETTE
89/12; 90/3,5,9
7
0
0
28
0
0


:LAWRENCE
89/12; 90/3,5,9
10
0
0
40
0
0


NtSSISSlPP]
86/6,11
7
0
0
16
0
0


MISSISSIPPI
86/11
9
0
0
9
0
0


- MONITEAU
87/12; 88/3,5,9
2
0
0
8
0
0


WNROE
87/12; 88/3,5,9
7
0
0
28
0
0


'¦'nEW'MAORIO.'.-.-
86/6,11
6
0
0
14
0
0


HEW MADRID
-;tPOMP>
86/11
5
0
0
5
0
0


?J00 AWAY
87/12; 88/3,5,9
10
0
0
40
0
0


PEMISCOT
86/6,7,11
6
0
0
12
0
0


PETTIS
89/12; 90/3,5,9
1
0
0
4
0
0


SALINE
87/12; 88/3,5,9
89/12; 90/3,5,9
20
0
0
80
0
0

7-MO-31
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
Lindane to Triflurslin



WELL RESULTS
SAMPLE RESULTS
RANGE Of
CONCEN-
TRATIONS
<«/l>
PESTICIDE
COUNTY
DATE
total:./
¦¦ WELLS::::
SAHPtEO
Of
POSITIVE
WEILS
TOTAL #
.SAMPLES
9 or
POSITIVE
SAMPLES


TEAR/HOBTK

i
XCL


fc
. KCL
<
MCt :
1
(MalatMon)
"SCOTT
86/6,7,11
7
0
0
15
0
0


SCOTT (PDUP)
86/11
11
D
0
11
0
0


SKE18T
87/12; 88/3,5,9
9
0
0
36
0
0


STODDARD
86/6.7.11
7
0
0
14
0
0


TEXAS
89/12; 90/3,5,9
15
0
0
60
0
0


iWESSTER
89/12; 90/3,5,9
12
0
0
a
0
0


WRIGHT.
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
UELLS/SAMPLES


269
0
0
921
0
0

Nethezoie
sutler
86/6
5
0
0
5
0
0


:OUHKLIN
86/6
5
0
0
5
0
0
'

NtSSiSSiPPI
86/6
7
0
0
8
0
0


;«EW:«ADRID
86/6
6
0
0
7
0
0


PE»!ISCOT
86/6
5
0
0
6
0
0



86/6
6
0
0
7
0
0


V-STCDOARD
86/6
6
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


40
0
0
45
0
0

¦ Methomyl.-;
: SUTLER
86/6,11
5
0
0
11
0
0


Dusoclui
86/6,11
5
0
0
11
0
0


MISSISSIPPI
86/6,11
7
0
0
16
0
0


MISSISSIPPI
(PftWP)
86/11
9
0
0
9
0
0


«EW:MADR1D
86/6,11
6
0
0
14
0
0


HEW H AO ft ID
CPDUPJ
86/11
5
0
0
5
0
0


PEWISCOt
86/6,7,11
6
0
0
12
0
0


SCOTt
86/6,7,11
7
0
0
15
0
0


SCOTT CPOUP)
86/11
11
0
0
11
0
0


• / STODDARD
86/6,7,11
7
0
1
14
0
1
8.1
TOTAL DISCRETE
UELLS/SAMPLES


68
0
1
118
0
1
8.1
7-MO-32
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
Lindane to Trifluralin



WEIL RESULTS
SAMPLE RESULTS
RANGE OF
CONCEN-
TRATIONS

perncioe
COUHTY
DATE
torn
WELLS
SAMPLED
ft Of
POSITIVE
UEILS
TOTAL #
SAMPLES
# Of
positive
SAHPLE5


YEAR/HOST*

i
HO.
<•
MCl

t
XCL
MCI
HBthoxychlor
SUTlfR	
86/6
1
0
0
1
0
0


DUNKLIN
86/6
1
0
0
1
0
0


SEW HABftfB
86/6
1
0
0
1
0
a


scorr
86/6
1
0
0
1
0
0

TOTAL DISCRETE
VELLS/SAWPLES


4
0
0
4
0
0


¦ jUTiit¦
86/6,It; 87/7
13
0
0
24
0
0


jJUKiCLHi
86/6,11; 87/7
11
0
0
24
0
0


• Mississippi
86/6,11; 87/7
16
1
0
32
1
0
120,0

wiisissippi
:
86/11
9
0
0
9
0
0


HEV MADRID
86/6,11; 87/7
17
0
0
33
0
0


HEW HADftlD
CPOUP)
86/11
5
0
0
5
0
0


PEN I SCOT
86/6,11; 87/7
12
0
0
21
0
0


'SCOTT
86/6,11; 87/7
13
0
0
28
0
0


swrr 
-------
PESTICIDE SAW LI KG IN THE STATE OF MISSOURI
Lindane to Trifluralin



UEU RESULTS
SAMPLE RESULTS
RANGE Of
CDKCER-
TRATIONS
«< 9/l>
P£ETICI8£
county
DATE
TOTAL
WEILS
SAKPLEO
« W
POSITIVE
WEILS
* TOTAL f
SAMPLES
« of:"
POSITIVE
SAMPLES


TEAR/KOKTK

6
wa
<
MCt

- 6
HCL
Ma
(Metrlbuxlh)
: IAWETTE
89/12; 90/3,5,9
7
0
2
28
0
2
0.2-0.3

¦^wrence
89/12; 90/3,5,9
10
0
1
40
0
1
0.2

Missrssim
86/6,11; 87/7
16
0
0
32
0
0


MISSISSIPPI
86/11
9
0
2
9
0
2
7.0-14.0

Romiteau
87/12; 88/3,5,9
2
0
0
8
0
0


: XOBROE
87/12; 88/3,5,9
7
0
0
28
0
0


HEV MADRID
86/6,11; 87/7
17
0
0
32
0
0


*EV KADR1G
tPOWP>
86/11
5
0
1
5
0
1
2.0

HODAWAY "
87/12; 88/3,5,9
10
0
0
40
0
0


¦ PENtSCOT' - >:
86/6,7,11; 87/7
13
0
0
22
0
0



89/12; 90/3,5,9
1
0
0
4
0
0


SALINE
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
80
0
0


SCOtT
86/6,7,11; 87/7
14
0
1
28
0
1
0.4

SCOTT (f"DUP>
86/11
11
0
0
11
0
0


SHELBY
87/12; 88/3,5,9
9
0
1
36
0
1
0.2

STODOARD
86/6,7,11; 87/7
15
0
1
22
0
1
0.4

JEXASr
89/12; 90/3,5,9
15
0
0
60
0
0


WEBSTER
89/12; 90/3,5,9
12
0
0
48
0
0


WRIGHT
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
UELLS/SAMPIES


325
0
23
1,015
0
26
0.2-14.0

"SUTLER:
86/6,11
5
0
0
11
0
0


:.bu*ti
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
Lindane to Trifluralin



v WELL RESULTS
SAMPLE SESCaTS.
RANGE OF
CONCEN
ORATIONS -
:LES;—


TEAR/KORTH

- S ";-:-
MCL
¦ <
RCL .




.... .J
MCL
HCt
(KoMnate)
scorr
86/6,7,11
7
0
0
15
0
0


'scon"
86/11
5
0
0
5
0
0


PEN I SCOT
86/6,7,11
6
0
0
12
0
0


:1sicort: 	
86/6,7,11
7
0
0
15
0
0


SCOTT; 
86/11
11
0
0
11
0
0


STOOOARD
86/6,7,11
7
0
0
14
0
0

TOTAL DISCRETE
WELLS/SAMPLES


68
0
1
118
0
1
0.4
Napialan
sutler ¦
86/6
5
0
0
5
0
0


DUNKLIN v::..::
86/6
5
0
0
5
0
0


Mississippi
86/6
7
0
0
8
0
0


II Ftf: MADRID
86/6
6
0
0
7
0
0


fEXJSCOT
86/6
5
0
0
6
0
0


¦SCOTT':'
86/6
6
0
0
7
0
0


STOOD ARD
86/6
6
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


40
0
0
45
0
0

IPgfraquat-
BUTLER ;
86/6,11
5
0
0
11
0
0



86/6,11
5
0
0
11
0
0


: Mississippi
86/6,11
7
0
0
16
0
0

7-MO-35
-------
PESTICIDE SAMPLING III THE STATE OF MISSOURI
Lindane to Triflurilin



WEIL RESULTS
SAMPLE RESULTS
RANGE OF
CONCEft
TRATIONS
<*3/I)
PESTICIDE
CCXJWTY
. . : : . pate
TOTAL
WEILS
:SAMPLED
# OF
posmvE
WEILS
TOTAL #
SAMPLES
« Of
POSITIVE
SAMPLES


TEAR/WORTH

4
Ml ]

t
HCL
<
NO.
(Paraquat)
Mississippi
(POWP)
86/11
9
0
0
.
0
0


IIEV HAD RID
86/6,11
6
i
0
13
1
0
100,0

M£V MADRID
CPDUP> • • •
86/11
5
0
0
5
0
0


PEMISCOT
86/6,11
5
0
0
11
0
0


SCOTT -
86/6,11
6
0
0
14
0
0


SCOTT CP0UP3
86/11
11
0
0
11
0
0


- ST0D0 m
86/6,11
6
1
0
13
1
0
100.0
TOTAL DISCRETE
WELLS/SAMPLES


65
2
0
114
2
0
100.0
~Parathioh,
Methyl.-
ATCHISON
87/12; 88/3,5,9
16
0
0
64
0
0


AUOSiAN
87/12; 88/3,5,9
5
0
0
20
0
0


BARTON
89/12; 90/3,5,9
3
0
0
12
0
0


800NE
87/12; 88/3,5,9
11
0
0
44
0
0


-CARROLL-"' '
87/12; 88/3,5,9
27
0
0
108
0
0


CHARITON
87/12; 88/3,5,9
6
0
1
24
0
1
0.2

COLE
87/12; 88/3,5,9
2
0
0
7
0
0



89/12; 90/3,5,9
13
0
0
52
0
0


HOWARD :Y'::
87/12; 88/3,5,9
3
0
0
12
0
0



89/12; 90/3,5,9
12
0
0
48
0
0


LAFAYETTE
89/12; 90/3,5,9
7
0
0
28
0
0


LAWRENCE
89/12; 90/3,5,9
10
0
0
40
0
0


MONITEAU
87/12; 88/3,5,9
2
0
0
8
0
0


MONROE
87/12; 88/3,5,9
7
0
0
28
0
0


: JIQDAWAT
87/12; 88/3,5,9
10
0
0
40
0
0


:PETTIS
89/12; 90/3,5,9
1
0
0
4
0
0


SAVrt£V/:'.\:-:'
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
80
0
0


1 «Het.8r; ;
87/12; 88/3,5,9
9
0
0
36
0
0

III; frxAS :
89/12; 90/3,5,9
15
0
0
60
0
0

7-MO-36
-------
PESTICIDE SWUNG IN THE STATE OF MISSOURI
Lindane to Trifluralin



WELL RESULTS
SAMPLE RESULTS
RANGE Of
COttCEH-
TRATiOKS
(#9/1)
PfSTiCIOE
cowrt
DATE
TOTAL
WEILS
sawied
P Of
POSITIVE
UEU3
TOTAL #
SAMPLES
~ Of
POSITIVE
SAHPLES


TEAR^MONTH

e
NCL
< "
HCL

HCL
<
HCL
(Parathfori,
ethyl)
WEBSTER
89/12; 90/3,5,9
12
0
0
48
0
0


URIGHT
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WELLS/SAMPLES


200
0
1
803
0
1
0.2
Parathion,
methyl
SUTLER
66/6,11
s
0
0
11
0
0


OUhKL sv
86/6,11
5
0
0
12
0
0


Mississippi
86/6,11
7
0
0
16
0
0


MISSISSIPPI
86/11
9
0
0
9
0
0


^U.fcAORir"'"
86/6,11
6
0
0
15
0
0


XPOUP)
86/11
5
0
0
5
0
0


^EWISCOI
86/6,7,11
6
0
0
12
0
0


^COIT-
86/6,7,11
7
0
0
16
0
0



86/11
11
0
0
11
0
0



86/6,7,11
7
0
0
14
0
0

TOTAL DISCRETE
WELLS/SAMPLE


68
0
0
122
0
0

~ WXS
SUTLER"
86/6,11
5
0
1
11
0
1
0.275

DUNKLIN
86/6,11
5
0
0
11
0
0


'¦'Nrssissippi;-/:'-1
86/6,11
7
0
1
16
0
1
0.014

MISSISSIPPI
(PCWP)
86/11
9
0
0
9
0
0


MEtf MADRID
86/6,11
6
0
0
14
0
0


NEW MADRID .

86/11
11
0
0
11
0
0


:STODDARD
86/6,7,11
7
0

14
0
1
0.008
TOTAL DISCRETE
WELLS/SAMPLES


68
0
3
118
0
3
0.008-
0.275
7-MO-37
-------
PESTICIDE SAMPLING ID THE STATE OF MISSOURI
Lindane to TrifIuraIin



WELL 'RESULTS
SAMPLE RESULTS
RANGE Of
;> ¦¦conceit
TRATlCrtS
<#s/l>
PfBTICfDE
COUNTY
DATE
TOTAi
WELLS
SAWLEO
n of
POSITIVE
WEILS
TOTAL #
SAMPLES
# Of
POSITIVE. .
SAMPLES


TEAR/MOSTM

*
MCL
<
MCL

t
*CL
<
Ma
Peraetfcrin
SUTL€R
86/6
5
0
0
5
0
0


8UNKLW
86/6
5
0
0
5
0
0


MISSISSIPPI
86/6
7
0
0
8
0
0


-¦MEtf MADRID
86/6
6
0
0
7
0
0


PEMISCOT
86/6
5
0
0
6
0
0


SCOTT
86/6
6
0
0
7
0
0


STOOOARO
86/6
6
0
0
7
0
0

TOTAL DISCRETE
WELLS/SAMPLES


40
0
0
45
0
0

~Parniimethat In
•BUTLER
86/6,11; 87/7
13
0
0
23
0
0


DUNKLIN
86/6,11; 87/7
11
0
0
22
0
0


MISSISSIPPI
86/6,11; 87/7
16
0
1
32
0
1
0.02

MSSlSSiPP]
(KJtfP)
86/11
9
0
0
9
0
0


>EK; MADRID
86/6,11; 87/7
17
0
0
32
0
0


KEWHADRID
(PDUP)
86/11
5
0
0
5
0
0


PEMISCOT
86/6,7,11; 87/7
13
0
0
22
0
0


:SCOTT
86/6,7,11; 87/7
14
0
1
28
0
1
0.05

'SCOTT (PDUP) r
86/11
11
0
0
11
0
0


i'STOOOARD
86/6,7,11; 87/7
15
0
0
27
0
0

TOTAL DISCRETE
WELLS/SAMPLES


124
0
2
212
0
2
0.02-
0.05
¦ Phorat«
' BUTLER
87/7
12
0
0
12
0
0


DUNKLIN
87/7
11
0
0
12
0
0


MISSISSIPPI
87/7
16
0
0
16
0
0


;SBt MADRID
87/7
17
0
0
18
0
0


PEMISCOT-. -;
87/7
10
0
0
10
0
0


SCOTT
87/7
13
0
0
13
0
0


STODDARD •
87/7
13
0
0
13
0
0

TOTAL DISCRETE
UELIS/SAMPIES


92
0
0
94
0
0

7-MO-38
-------
PESTICIDE SWUNG IN THE STATE OF MISSOURI
Lindane to Trtfturalin



WEIL RESULTS
SAWLE RESULTS
RAUGE Of
CONCEN-
TRATIONS
i*3/ D
PESTICIDE
cowry
DATE
TOTAL
WEILS
SAILED
* Of
POSITIVE
UEILS
TOTAL #
SAMPLES
# Of
POSITIVE
SAMPLES


TEAR/HCWTH

a
MCL
<
MCL

t
MCL
MCL
JHctoraa
SURER
86/6
1
0
0
1
0
0


DUNKLIN
86/6
1
0
0
1
0
0


HEW MADRID
86/6
1
0
0
1
0
0


scsrr
86/6
1
0
0
1
0
0

TOTAL DISCRETE
WELLS/SAMPLES


4
0
0
4
0
0

.-/PropaAioru;.
ATCH1SOS
87/12; 88/3,5,9
16
0
0
64
0
0


AUWilA#
87/12; 88/3,5,9
5
0
1
20
0
1
1.94

8A3TOK
89/12; 90/3,5,9
3
0
0
12
0
0


80CWE
87/12; 88/3,5,9
11
0
0
44
0
0


SUTLER
86/6; 87/7
13
0
0
13
0
0


CARROU.
87/12; 88/3,5,9
27
0
0
108
0
0


CHARJTOK
87/12; 88/3,5,9
6
0
0
24
0
0


COLE
87/12; 88/3,5,9
2
0
0
7
0
0


DUNKUK
86/6; 87/7
12
0
0
13
0
0


GREENE
89/12; 90/3,5,9
13
0
0
52
0
0


HOWARD
87/12; 88/3,5,9
3
0
0
12
0
0


- 2ASPER
89/12; 90/3,5,9
12
0
0
48
0
0


LAFATETTE
89/12; 90/3,5,9
7
0
0
28
0
0


LAWRENCE
89/12; 90/3,5,9
10
0
0
40
0
0


MISSISSIPPI
87/7
16
0
1
16
0
1
0,4

. SOHfTEAU
87/12; 88/3,5,9
2
0
0
8
0
0


qteMROE '
87/12; 88/3,5,9
7
0
0
28
0
0


NEW MADRID
B6/6; 87/7
18
0
0
19
0
0


:t» Avaor. i .h ; ¦:i ^'
87/12; 88/3,5,9
10
0
0
40
0
0


PEN! S'CC?*'
87/7
10
0
0
10
0
0


PETTIS
89/12; 90/3,5,9
1
0
0
4
0
0


SALINE
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
80
0
0


SCOTT
86/6; 87/7
14
0
0
14
0
0


.•SHELBY^.'
87/12; 88/3,5,9
9
0
0
36
0
0

7-MO-39
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
Lindane to Trifluralin




*E$Ut TS
SAMPLE RESULTS
RANGE Of
CONCEN-
TRATIONS
(#3/1)
PESTICIDE
COUNTY
MTS
TOTAi
WEILS
SAMPLED
V Of
POSITIVE
WEILS
TOTAL #
SAMPLES
# Of
POSITIVE
SAHPLES


TEAR/MONTH

t
Ma:-
-<
• HCL

*CL
<
NCI
(Picloram)
STOODARB
87/7
13
0
1
13
0
1
0.1

TEXAS
89/12; 90/3,5,9
15
0
0
60
0
0


WEiSTIft
89/12; 90/3,5,9
12
0
0
48
0
0


WIGHT
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WEILS/SAMPLES


297
0
3
901
0
3
0.1*1.94
~Propomt
8DHER
86/6,11; 87/7
13
0
0
24
0
0


OUNKLiN ' ' '
86/6,11; 87/7
11
0
0
24
0
0


- Mississippi-'
86/6,11; 67/7
16
0
1
32
0
1
0.06

Mississippi; -;v;
.:;.'
86/11
6
0
0
7
0
0


STOOOARD
86/6,7,11; 87/7
15
0
1
27
0
1
0.07
TOTAL DISCRETE
WELLS/SAMPLES


124
0
2
216
0
2
0.06-
0.07
Sethoxydfm
SUTLER
86/6,11
5
0
0
11
0
0


DUNKLIN
86/6,11
5
0
0
11
0
0


•HiSSlSSIPPl- ¦¦
86/6,11
7
0
0
16
0
0


MISSISSIPPI
: (POMP J — •
86/11
9
0
0
9
0
0


' NEW" MA0R1& -; ;.r:
86/6,11
6
0
0
14
0
0


" NEwTmAORJO- •
{PDWP):
86/11
5
0
0
5
0
0


/PEMISCOT'
86/6,11
5
0
0
11
0
0


' SCOTT "
66/6,11
6
0
0
14
0
0


SCOTT (PCWP>
86/11
11
0
0
11
0
0


STOOD ARB . : :
86/6,11
6
0
0
13
0
0

TOTAL discrete
UELLS/SAMPLIS


65
0
0
115
0
0

7-MO-40
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
Lindane to Trifluralin



WELL DESULTS
SAWLE RESULTS
RANGE Of
CONCEN-
TRATIONS
-------
PESTICIDE SAMPLING IK THE STATE OF MISSOURI
lindane to Tri fturalin



WEIL RESULTS
' ' SAWLt RESULTS
RANGE Of
CONCEN-
TRATIONS
PESTICIDE
COUNTY
DATE
TOTAL
WEILS .
SAMPLED.
.¦:# of :•
: PosmvE
: uEtis :
TOTAL #
Samples
1 Of '
fOSiTIVE
SAMPLES


YEAR/HOST*

i
Mtt
<
MCt

t
MCI
<
Ma
(Terbufos)
COLE
67/12; 88/3,5,9
2
0
0
7
0
0


DUNKUM
86/6,11; 87/7
11
0
0
27
0
0


OWENE
89/12; 90/3,5,9
13
0
0
52
0
0


HOWARD
67/12; 88/3,5,9
3
0
0
12
0
0


JASPER
89/12; 90/3,5,9
12
0
0
48
0
0


LAFAYETTE
89/12; 90/3,5,9
7
0
0
28
0
0


LAURENCE
89/12; 90/3,5,9
10
0
0
40
0
0


¥t«sissfiipirt
86/6,11; 87/7
16
0
0
32
0
0


NISSISSiPPJ
-------
PESTICIDE SAMPLING IN CHE STATE OF MISSOURI
Lindane to Trifluralin



WELL RESULTS
SAKPLE RESULTS
RANGE OF
COKCEN-
TRATIQNS/
{03/D
PESTICIDE
COUfiTSf
©ATE
: TOTAL
UEUS
SAWLE&
# OF
POSITIVE
WEILS
TOTAL #
SAMPLES
0 Of
POSITIVE
SAMPLES


YEAR/MOtiTX

S
wa
<
KCt

t
MCL
<
net
(Thiobencarb)
MISSISSIPPI
(POWP>
86/11
9
0
0
9
0
0


HA0RIE)
86/11
6
0
0
7
0
0


: :iiEV H»R1P
:
-------
PESTICIDE SWUNG IN THE STATE OF MISSOURI
Lindane to Triflurslin



WELL RESULTS
SAMPLE RESULTS
RANGE Of
CONCEN-
TRATIONS
0*5/L>
PESTlCtOE
COUNTY
BATE
TOTAL
. ifiEtLS
^SAMPLED
* Of
posmyu
WELLS
TOTAL #
SAMPLES
9 Of
POSITIVE
SAMPLES


YEAR/MOSTK

•MCt-


2
HCL

(Toxaphene)
i ilQOAWAV
87/12; 88/3,5,9
10
0
0
40
0
0


PEMISCOT
86/6,7,11
6
0
0
12
0
0


PETTIS
69/12; 90/3,5,9
1
0
0
4
0
0


: saline
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
80
0
0


SCOTT
86/6,7,11
7
0
0
16
0
0


SCOtT (POMP)
86/11
11
0
0
11
0
0


SHELfiT
87/12; 88/3,5,9
9
0
0
36
0
0


STOOOARD
86/6,7,11
7
0
0
14
0
0


TFXjS
89/12; 90/3,5,9
15
0
0
60
0
0


WEBSTES
89/12; 90/3,5,9
12
0
0
48
0
0


WIGHT ::
89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WILLS/SAMPLES


269
0
0
925
0
0


ATCHISON
87/12; 88/3,5,9
16
0
0
64
0
0


AIOR5A8
87/12; 88/3,5,9
5
0
0
20
0
0


BASICS
89/12; 90/3,5,9
3
0
0
12
0
0


800NE
87/12; 88/3,5,9
11
0
0
44
0
0


SUTLER
86/6,11; 87/7
13
0
0
24
0
0


CARROLL
87/12; 88/3,5,9
27
0
0
108
0
0


- -CHARl TON'"::;:
87/12; 88/3,5,9
6
0
0
24
0
0


COLE
87/12; 88/3,5,9
2
0
0
7
0
0


COMKLItl
86/6,11; 87/7
11
0
0
24
0
0


GREECE
89/12; 90/3,5,9
13
0
0
52
0
0


HOWARD
87/12; 88/3,5,9
3
0
0
12
0
0


'JASPcft
89/12; 90/3,5,9
12
0
0
48
0
0


LAFArETIE
89/12; 90/3,5,9
7
0
0
28
0
0


LAWRENCE
89/12; 90/3,5,9
10
0
0
40
0
0


MISSISSIPPI
86/6,11; 87/7
16
0
4
32
0
4
0.143-
0.3

jftSSISStPPI-.:-. .
::CPOUP)
86/11
9
0
0
9
0
0

7-MO-44
-------
PESTICIDE SAMPLING IN THE STATE OF MISSOURI
Lindane to Tri fluralin



WELL RESULTS
SAWLE RESULTS
RANSI Of -
COMCEN- . •
TRATJWS
'''
86/11
5
0
0
5
O
0


: tiODAVAY '
87/12; 88/3,5,9
10
0
0
40
0
0


PEMISCOT
86/6,7,11; 87/7
13
0
1
22
0
1
0.006

PETtlS
89/12; 90/3,5,9
1
0
0
4
O
0


SAL IKE
87/12; 88/3,5,9;
89/12; 90/3,5,9
20
0
0
80
0
0


SCOTT
86/6,7,11; 87/7
H
0
2
29
0
2
0.009-
0.015

: S COTT t TO UP ) •
86/11
11
0
0
11
0
0


-SKElflT "	
87/12; 88/3,5,9
9
0
0
36
0
0


.stopoar?.
86/6,7,11; 87/7
15
0
3
27
0
3
0.007-
0.024

' TEXAS -. -
89/12; 90/3,5,9
15
0
0
60
0
0


vebster:
89/12; 90/3,5,9
12
0
0
48
0
0



89/12; 90/3,5,9
10
0
0
40
0
0

TOTAL DISCRETE
WELLS/SAMPLES


324
0
10
1,019
0
10
0.006-
0.143
GRAND TOTAL
DISCRETE
WELLS/SAMPLES


325
17
99
1,056
27
145

~ No NCI or lifetime HA available,
&
-------
Intentionally Blank Page
-------
STATE OF MISSOURI
UELLS BY CQUHTt

TYPES OF WEUS
SOURCE OF
CONTAMINATION
(MJMBER Of 1£US)
»!«1KC WATER
HONlTttUJiG
emu
TOT At
SWPLG
HCJ.
<
MCI
TOTAL
SMPU>
>
net
RCC
TOTAL
SMM.&
i
«et
<
KCL
iiru*
¦ ¦¦¦¦% ...
PS
UKtC*
Atchison
16
1
6
0
0
0
0
0
0
7
0
0
Audrlart
5
1
4
0
0
0
0
0
0
5
0
0
8arton
3
0
1
0
0
0
0
0
0
1
0
0
8oo»x>
11
1
7
0
0
0
0
0
0 .
8
0
0
Butler
11
1
1
0
0
0
2
0
0
2
0
0
Carrol I
27
5
18
0
0
0
0
0
0
23
0
0
CharftorvX
6
1
5
0
0
0
0
0
0
6
0
0
Cole
2
0
2
0
0
0
0
0
0
2
0
0
OtmkHn
8
0
3
0
0
0
3
0
0
3
0
0
Greece
13
0
0
0
0
0
0
0
0
0
0
0
Howarcf
3
0
3
0
0
0
0
0
0
3
0
0
Jasoer
12
0
2
0
0
0
0
0
0
2
0
0
iafayette
7
1
2
0
0
0
0
0
0
3
0
0
Lawrence
10
0
1
0
0
0
0
0
0
1
0
0
MfssFSSippS
19
1
4
0
0
0
5
1
1
7
0
0
; Momtesu
2
0
1
0
0
0
0
0
0
1
0
0
Honroe
7
0
0
0
0
0
0
0
0
0
0
0
Hew ttadrid .
1?
1
4
0
0
0
5
0
0
5
0
0
Nodaway
10
1
7
0
0
0
0
0
0
8
0
0
Pewi scot
8
0
1
0
0
0
5
0
1
2
0
0
Pettis
1
0
1
0
0
0
0
0
0
1
0
0
Sal ir>e
20
1
7
0
0
0
0
0
0
8
0
0
Scott
23
0
7
0
0
0
2
0
1
8
0
0
Shelby
9
1
2
0
0
0
0
0
0
3
0
0
Stoddard
12
1
5
0
0
0
3
0
1
7
0
0
Texa»
15
0
1
0
0
0
0
0
0
1
0
0
Webster
12
0
0
0
0
0
0
0
0
0
0
0
Wright
10
0
0
0
0
0
0
0
0
0
0
0
TOtAl
300
17
95
0
0
Q
25
1
4
117
0
0
#
NFU=Known or Suspected Normal Field Use
PS =Krv>wn or Suspected Point Source
UNK='Jnkno«n
7-MO-47
Preceding page blank
-------
Well Sampling by County
(Total Number of Wells with Pesticide Detections / Total Number of Wells Sampled)
a/a-:
JO/26 vlj.'p/lS;
1/18^:0/27

01/35:
$/22:<10/35

wm>
6/35 rp/
;r|4/ia
1/21
Total Wells Sampled
per County
K3
C2
E3
>	1000
501 to	1000
101 to	500
51 to	100
1 to	50
~ No weils sampled
Pesticides Detected
1,2-Dichloropropane
Alachlor
Aldicarb
Ametryn
Atrazine
Cyaiiazine
Dieldrin
Fonofos
Metolachlor
Prometon
Propazine
Propachlor
Simazine
Terbufos
Trifluralin
7-NE-l
-------
Intentionally Blank Page
-------
NEBRASKA
OVERVIEW OF STATE LEGISLATURE AND ENVIRONMENTAL POLICIES
REGARDING PESTICIDES IN GROUND WATER
Most of Nebraska's 330,000 rural households and 84% of the state's public water supplies
rely on ground water to meet drinking water needs. For this reason ground water is
considered to be Nebraska's most vital natural resource and is, therefore, formally protected
under the Nebraska Groundwater Protection Act.
Potential pesticide contamination of ground water is of particular concern because Nebraska
ranked seventh nationally in pesticide usage and second in number of irrigated acres. An
estimated 33 million pounds of pesticides were used on major crops in Nebraska (1987).
Atrazine is the most heavily used pesticide followed by alachlor and propachlor.
Concern about ground-water contamination in Nebraska is particularly pronounced in the
central Platte River valley, where intensive cultivation and irrigation, a shallow water table,
and soil of low water-holding capacity all combine to maximize the probability of leachates
infiltrating local ground-water sources. An additional problem in this region is the fact that
most residents living outside of organized cities and towns draw water for domestic use from
a well located on their property. Such wells are likely to be less deep and of less sound
construction than their municipal counterparts, thus increasing the possibility of exposure
to potential harmful ground-water contaminants by rural dwellers.
The extent of the problem of contamination of rural private well water resulting from the
use of agricultural chemicals had not been extensively studied in Nebraska up through the
mid-1980*5. Beginning October 1, 1984, as a result of increased funds and technical
assistance became from the Centers for Disease Control, the Nebraska Department of
Health was presented with the opportunity to conduct a systematic, large-scale investigation
of private well water quality.
Preceding page blank
7-NE-3
-------
REPORTED STUDIES OF PESTICIDES IN GROUND WATER
Spalding, Roy F., M.E. Exrter, J J, Sullivan, and Lyon, Chemical Seepage form Tail water
Recovery Pit to Adjacent Ground Water, Journal of Environmental Quality. Vol 8, No 3.
July-September 1979
The purpose of this study was to determine whether the integrity of ground water is
threatened by seepage form pits in areas of shallow water table and if threatened to what
degree.
Design
Merrick County was selected as the site for this investigation because the water table
beneath about 75% of the county is within 3 m of the land surface. A 4-year-old reuse pit
in the Platte River bottom land of southwestern Merrick County was chosen as the site for
the seepage study. The pit has a maximum dimensions of 46.6 by 16.5 by 3 m. In the
immediate area of the reuse pit and in the field upgradient from it the soil is the moderately
well-drained Merrick loam (cumulic Haplustoll). This study consisted of two parts: an areal
study and a seepage study. The areal study sampled ground water from 18 irrigation wells
and 10 reuse pits in Merrick County. Samples were analyzed for atrazine and N03-N.
For the seepage study 15 sand-point monitoring wells were installed around a single reuse
pit. Five of the wells were upgradient and 10 downgradient from the pit. The intake
screens were about 0.8 m below the water table in the very shallow wells, about 1.5 m below
in the shallow wells, about 3 m below in the medium-depth wells and about 6 m below in
the deep wells. The very shallow wells were installed a few days after the pit was spiked.
The reuse pit was spiked with 247kg Br", 200g lsN-labeled NaN03, and 1.1kg atrazine.
Samples were collected before and after spiking.
Results and Conclusions
In the areal portion of this study atrazine was detected in all but one of the 18 ground water
samples. The significant correlation coefficient of +0.48 for N03-N and atrazine indicated
that both probably enter the ground water by infiltration through the soils. Some of the
lowest atrazine concentrations and the least variability were found beneath soils having a
shallow (< 1.5m) water table. The low concentrations may be due to either the sorption
of atrazine on clay-size particles and/or the degradation of atrazine in the upper soil
horizon. Atrazine concentration in ground water beneath moderately well drained and well
drained soils showed a high degree of variability. This scatter probability indicates that
atrazine occurs in the ground water as relatively nondispersed plumes, which may reflect
differences in application rates, water management and/or spillage.
7-NE-4
-------
Differences between the transport of Br", ^N-labeled N03-N, and atrazine were detected
in curves of relative concentration vs. time. In this field situation Br" was the most
conservative tracer. Transport of the uN-labeled N03-N tracer was shown to be affected
by interaction with N in the sediment-water system. Atrazine transport was least
conservative and presumably greatly altered by adsorption on fine-textured sediments at the
water-sediment interface.
Detection of Br*, ^N-labeled N03-N in shallow and medium-depth wells downgradient from
the reuse pit indicated seepage from the pit into adjacent ground water. Probably many
other reuse pits in Merrick County similarly lose water by seepage. However, most of them
are in areas were the ground water N03-N concentration already exceeds 10 mg/L. During
most of the year seepage from such pits probably contains lower concentrations of N03-N
and atrazine than already occur in the surrounding ground water. One key to lowering
seepage losses is pit management. By continually pumping from each pit during irrigation
runoff events, head pressure on the sides and bottom of the pit can be kept at a low level,
thereby reducing the rate of chemical transport across the water-sediment interface.
Spalding, Roy F., Gregor Junk, and John Richard, Pesticides in Ground Water Beneath
Irrigated Farmland in Nebraska, August 1978. Pesticides Monitoring Journal, Vol 14, No
3, September 1980
Primary Objective
The purpose of this study was to measure the levels of selected pesticides in ground water
overlain by cropped and irrigated medium-textured silt loam soils having a moderately thick
unsaturated layer. Most of the pesticides were selected because of current or past usage,
but others were chosen because they have been mentioned in the Federal Register in
discussions on primary national drinking water regulations.
Design
Water samples were collected from an area along the Platte River in Hall and Buffalo
Counties were the N03-N concentrations in ground water exceeded 10.0 mg/L. Samples
were collected from 14 wells in August of 1978 and analyzed for NOrN and the following
pesticides: atrazine, alachlor, aldrin, dieldrin, 2,4-D, DDT, endrin, heptachlor, heptachlor
epoxide, lindane, methoxychlor, and silvex.
Results and conclusions
Detectable concentrations of atrazine occurred in all ground water samples and alachlor in
two samples. Concentrations ranged from 0.06-3.12 ug/L for atrazine and around 0.01 ug/L
for alachlor. The wide range in atrazine concentration in water under predominantly silt
loam soils suggests that vertical transport is associated with possible differences in water
management.
7-NE-5
-------
Exner-Spalding, Mary, and Roy F. Spalding, Conservation and Survey Division, Institute of
Agriculture and Natural Resources, University of Nebraska, Tel.: 402-472-7547. Ground-
Water Contamination & Well Construction in Southeast Nebraska. Study conducted fall
1981 through fall 1982. (Reported in Groundwater 23(1), January-February (1985), 9 pp.)
Primary Objective
The primary objective of this study was to determine the causes of elevated ground-water
N03-N concentrations and their unusually high frequency in the ground water of the Lincoln
quadrangle in southeastern Nebraska. Nitrate-nitrogen (N03-N) concentrations and total
and fecal coliform densities were determined in ground water from 268 household and stock
wells in an 1100 mi2 area of southeast Nebraska. Forty-seven of the 268 wells were analyzed
for several commonly used pesticides as well.
Design:
Ground-water samples were obtained from 47 household and stock wells during fall 1981
and spring, summer, and fall 1982 in the four counties comprising the Lincoln quadrangle
in southeastern Nebraska. Eight wells were sampled in Johnson County, 4 wells in Nemaha,
15 wells in Pawnee, and 20 wells in Richardson County. The following information was
recorded for each well: type of construction, casing, depth, age, and use. In addition, the
location of each well with respect to the land surface and to potential sources of nitrate
contamination was recorded.
Samples were analyzed for alachlor, atrazine, carbaryl, carbofuran and propachlor. These
pesticides were chosen on the basis of their common usage and their relatively high aqueous
solubilities, which suggested that they might be candidates for vertical transport to the
aquifer. Pesticide samples were obtained in 4-liter glass jugs and shipped at the end of each
day by express bus to the Ames Laboratory, Ames, Iowa. Within 24 hours of arrival, the
pesticides were extracted using the XAD-2 resin extraction procedure of Junk et ah (1976)
and analyzed by GC/ECD with different polarity columns and periodic confirmation by
GC/MS. Detection limits were 0.01 ppb for atrazine and alachlor and 0.03 ppb for
propachlor, carbofuran, and carbaryl.
Results and Conclusions
Only atrazine and alachlor were found in detectable quantities in the 47 samples analyzed
for pesticides. All concentrations were below the respective Maximum Contamination
Levels (MCL) for atrazine and alachlor of 2 and 3 ppb. Alachlor was detected in one well
in Richardson County at 0.02 ppb. The areal distribution of atrazine in the 13 samples with
concentrations above the detection limit was random. The highest concentrations occurred
in Pawnee and Richardson (0.51-1.00) and Nemaha (1.01 to 3.00 ppb) Counties. Both the
frequency of occurrence (28%) and the levels of atrazine (average concentration of <0.08
ppb) in ground water in the Lincoln quadrangle were much lower than those from an earlier
study in the central Platte area where the frequency of occurrence approached 100% and
the average concentration was around 1 ppb (Spalding et at, 1978; 1980). There the areal
distribution of atrazine was associated closely with that of N03-N which was used as an
indicator of deep percolation from irrigated croplands (Spalding et aL, 1980).
7-NE-6
-------
Although highly contaminated with N03-N, the ground water sampled in the study was
relatively clean with respect to pesticides. There was no significant correlation between the
two constituents (r = +0.153). Atrazine, the most frequently detected pesticide, was
detected only in water from wells in pump pits or in wells lacking a watertight casing. The
one ground-water sample containing alachlor was also from a well in a pump pit. None of
the wells surveyed that met construction criteria contained atrazine. It was suggested that
spillage during preparation of the pesticide for field use could be the source of
contamination.
Jacobs, Conduce A. or B. Retdg. Division of Environmental Health and Housing
Surveillance, Nebraska Department of Health, Tel.: 402-471-2541. 1985, 1986, and 1987,
Domestic Well Water Sampling in Central Nebraska: Laboratory Findings and their
Implications. Studies conducted/reported 1985, 28 pp., 1986, 19 pp., and 1987, 22 pp.
primary Objective
Since 1985, a program involving sampling and analysis of water from private wells of
randomly selected rural residents has been conducted to determine the extent of
contamination of rural drinking water wells and to determine the factors that contribute to
contamination of these wells. The program is administered under a cooperative agreement
between the Centers for Disease Control (CDC) and the Nebraska Department of Health
(NDOH). The purpose of the agreement is to increase the State's capacity to monitor
occupational and environmental safety and health. Each year groups of counties are
selected as target areas for well water sampling. At the end of the five-year project (1989),
randomly selected samples will have been collected and analyzed from the entire state.
Design:
1985 Phase;
The 21-county project target area was separated into three strata according to the variance
in ground-water pollution potential within the target area. Stratum I included Blaine,
Hooker, Logan, Loup, McPherson, and Thomas Counties. Stratum II included Custer,
Frontier, Furnas, Gosper, Harlan, Hayes, Red Willow, Sherman, and Valley Counties, and
Stratum III included Buffalo, Dawson, Kearney, Lincoln, and Phelps Counties. The
percentage of expected contaminated wells in each stratum was estimated (0.025%, Stratum
I; 0.10%, Stratum II; 0.15%, Stratum HI) based on differences in ground-water pollution
potential. County rural directories were utilized for the random selection of residences for
well sampling, eliminating those target area residents living in the more populous
communities that usually have a single municipal source of water. At the time of sample
collection, information was gathered concerning the construction of the well and the use of
specific farm chemicals in the immediate vicinity of the well.
7-NE-7
-------
Sample sizes sufficient to reflect the expected proportions of contaminated wells in each
stratum were projected statistically; however, the actual numbers of samples analyzed were
slightly less: 120 for Stratum I (123 projected), 123 for Stratum II (136 projected) and 166
for Stratum HI (188 projected) for a total of 409, Water sampling procedures were
standardized according to a detailed protocol. An outside tap as close as possible to the
well source was recommended for the sampling. Three separate samples were drawn; one
each for the analysis of nitrate and bacteria, background radiation, and pesticides. All
samples were analyzed at the State Health Department Laboratory in Lincoln.
Samples were analyzed for carbamate pesticides by a high-performance liquid
chromatography (HPLC) method; organophosphate pesticides were analyzed using GC. A
list of the specific pesticides included in the analysis was not provided; however, analysis
included at least the following: alachlor, atrazine, cyanazine, fonofos, and trifluralin.
Detection limits were not provided.
The relationships between the levels of pesticides, nitrates, bacteria, and radiation levels
detected in well samples and selected factors related to well construction and chemical
usage were examined, along with the intra-sample association between nitrate levels and
pesticide contamination.
1986	Phase:
The 1986 project involved a different target area (with the exception of Dawson county).
Based on geological characteristics, the three strata in the 11-county study included the
following counties: Garfield, Holt, Rock, and Wheeler in Stratum I; Dawson, Hall,
Merrick, and Scotts Bluff in Stratum II; and Adams, Clay, and Hamilton in Stratum HI. The
percentage of expected contaminated wells in each of the three strata was estimated from
the previous year's nitrate and pesticide test results to be 10%.
Sample sizes were 135 for Stratum I, 130 for Stratum II, and 134 for Stratum III, for a total
of 399. Water sampling procedures and pesticide and data analyses were conducted as
described in the 1985 phase.
1987	Phase?
Twenty-two counties located in northeastern and east central Nebraska were grouped into
strata based on similarity of soil type and land use. Stratum I includes Boyd, Keya Paha,
and Knox counties and is characterized by sandy, sandy loam and loess soils. The land is
used primarily for rangeland with some irrigated agriculture and forest areas. Stratum II
is composed of Burt, Cedar, Colfax, Cuming, Dakota, Dixon, Dodge, Pierce, Stanton,
Thurston, Washington, and Wayne Counties. Soils are silts and sands, and the majority of
the land is cultivated. Stratum III includes Fillmore, Polk, Saline, Seward, Thayer, and York
Counties. Soils in this area are loess, alluvial silts and clays, and land is primarily used for
cultivating irrigated row crops. In addition to the counties included in the three strata, sites
selected for sampling in 1985 from Dawson County were resampled this year and results
from both years were compared. The percentage of expected contaminated wells in each
stratum was estimated based on the results of the previous year's analysis, and soil types:
15% of the wells were expected to be contaminated in Stratum III, and 10% to be
contaminated in Strata I and II.
7-NE-8
i
-------
A total of 491 samples was analyzed for pesticides. Thirty-eight samples were collected in
Dawson County, and the number of samples collected in each stratum are presented below.

Wells

Wells

Wells
Stratum I
Sampled
Stratum II
Sampled
Stratum III
Sampled
Boyd
29
Burt
10
Fillmore
21
Keya Paha
13
Cedar
12
Polk
22
Knox
87
Colfax
12
Saline
39


Cuming
18
Seward
58


Dakota
5
Thayer
23


Dixon
5
York
27
Dodge	14
Pierce	15
Stanton	10
Thurston	4
Washington	13
Wayne	16
Samples were analyzed for 13 pesticides selected based on usage rates in Nebraska, toxicity,
soil leachability, soil half life and ease of laboratory analysis. The pesticides included in
analysis were: alachlor, atrazine, carbaryl, carbofuran, chlorpyrifos, cyanazine, fonofos,
metolachlor, methyl parathion, metribuzin, parathion, terbufos, and trifluralin. Samples
were analyzed for pesticides, based on the class of compounds, following extraction from
water with methylene chloride. The carbamate pesticides, carbaryl and carbofuran, were
analyzed using reverse-phase HPLC with an ultraviolet wavelength detector. The
organophosphates (chlorpyrifos, fonofos, methyl parathion, parathion and terbufos), triazine
herbicides (atrazine, cyanazine and metribuzin) acetanilide (alachlor), acetamide
(metolachlor) and dinotrotoluidine (trifluralin) compounds were analyzed by GC/N-P,
Triazine compound detections were confirmed using HPLC techniques; all other pesticides
were confirmed using GC/MS. Limits of detection were not provided.
Water sampling procedures and data analyses were conducted as described in the 1985
phase.
Results and Conclusions
1985 Phase:
Pesticides were detected in 19 wells in the Strata II and HI. Atrazine was detected in 3
wells in Stratum II in Frontier, Furnas, and Harlan counties at 0.163 to 0.410 ppb. Fonofos
was detected in one well in Stratum II in Franklin County at 0.056 ppb. In Stratum III,
alachlor was detected in one Dawson County well at 0.822 ppb. Atrazine was detected at
levels exceeding its 3-ppb MCL in two wells in Buffalo County at 3.2 and 3.7 ppb and in one
Phelps County well at 107.2 ppb. Atrazine was detected at levels of 0.112-1.9 ppb in 3 wells
in Buffalo County, 6 wells in Dawson County, 1 well in Kearney County and 2 wells in
Phelps County. Cyanazine was detected in one Dawson County well at 3.2 ppb, below its
U.S EPA's Lifetime Health Advisory (LHA) of 10 ppb.
7-NE-9
-------
The findings of the study confirmed that certain characteristics of poor well construction-
shallow depth, dug or driven construction methods, and the absence of casing-were
significantly related to chemical and radiation contamination in the wells sampled. The use
of pesticides and nitrates in the vicinity of the wells samples was not associated with well
contamination. Although use of both nitrates and pesticides was indicated more frequently
in the vicinity of contaminated wells in comparison with the uncontaminated wells,
differences were not statistically significant. The concentration of contaminated wells in
Strata II and III also corresponded to a greater use of nitrates and pesticides than in
Stratum I; however, there were several possible explanations for this finding. The most
likely was that the lack of adequate specific data on pesticide and nitrate use near the
sampled wells resulted in poor quantification of these variables. In addition, the use of
chemicals on neighboring properties in close proximity to the wells sampled was not
quantified at all. Another possible explanation was that soil composition, depth of water
table, and well construction may have been more important factors in predicting well
contamination than nitrate or pesticide use.
The study found nitrate and/or pesticide contamination in 45 of 451 private wells sampled
(10.0%); excluding Stratum I, the rate of contamination increased to over 1 in 8 wells
(44/325). If such a rate persisted in other areas of the state with similar geologic and
economic characteristics (which would include most of the Platte River valley and the
predominantly cultivated regions of central and eastern Nebraska), this would indicate that
a substantial proportion of the state's population could be ingesting water of dubious quality.
1986 Phase;
In Stratum I atrazine (MCL = 3 ppb) was detected in 1 well in Holt County at 22.70 ppb
(1339 on re-analysis) and in 3 other Holt County wells at 0.548 to 1.57 ppb. Atrazine was
detected above its MCL in Stratum II in 1 Merrick County well at 6.24 ppb and in 2 Hall
County wells at 3.06 and 4.00 ppb. Atrazine was detected at levels below its MCL in 2 wells
in Dawson, 5 wells in Hall, 7 wells in Merrick, and 1 well in Scotts Bluff Counties at 0.343
to 2.73 ppb. In Stratum III, all atrazine detections were below the MCL at 0.147 to 0.907
ppb in 3 Adams County wells, 5 Clay County wells, and 6 Hamilton County wells.
The differences in the percentage of wells contaminated with pesticides in each stratum
were statistically significant between Strata I and II and Strata II and III, but not between
Strata I and III. Wells contaminated with pesticides were significantly less deep and were
located significantly closer to cropland than their uncontaminated counterparts. There were
no other statistically significant differences between contaminated and uncontaminated wells
for any of the other factors examined.
The percentage of wells with evidence of nitrate, pesticide, bacterial, and radiation
contamination reached the highest levels in Stratum I and, with the exception of nitrate
contamination, were lowest in Stratum II. The nitrate and pesticide contamination problems
in Stratum I, which straddles the Platte River, were documented in earlier studies in the
7-NE-10
-------
region (including the 1985 study) and were concluded to be the result of heavy chemical
usage and a shallow water table. By contrast, Stratum II is less devoted to agriculture than
either Strata I or III, which explains its low percentage of wells contaminated with
pesticides.
The findings of the 1986 well survey confirm the findings from the 1985 survey. In both
surveys, the mean depth of wells contaminated with nitrates or pesticides was significantly
lower than that of the uncontaminated wells. In 1985, wells contaminated with nitrates or
pesticides were less likely to have been drilled than uncontaminated wells; however, since
almost every well sampled in 1986 was drilled (98.7%), significant differences between
contaminated and uncontaminated wells were not observed. In addition, the mean distance
to cropland among the 1986 wells contaminated with nitrates or pesticides was significantly
less than that to uncontaminated wells, but sufficient data were not available to evaluate
1985's wells. In both 1985 and 1986, pesticides and nitrates were used on the premises of
nitrate- and pesticide-contaminated wells more frequently than on the premises of
uncontaminated wells, although such differences were not statistically significant in either
year, due largely to the fact that agricultural chemicals were used on the premises of both
contaminated and uncontaminated wells in a high percentage of cases.
1987 Phase:
Pesticides were found in 6.92% of the wells sampled (34/491). Atrazine was detected in
one well in Stratum I in Knox County at 0.36 ppb. Alachlor was detected in this same well
at 0.95 ppb. In Stratum II, atrazine was detected in 2 wells in Stanton and Washington
Counties at 0.178 to 0.58 ppb. Alachlor was detected in 2 wells in Stratum II at levels
exceeding its MCL of 2 ppb. Alachlor was detected in 1 Wayne County well at 2.96 ppb,
and 1 Colfax County well at 20.6 ppb. In Stratum III atrazine was detected in 1 Fillmore
County well, 7 Polk County wells, 3 Saline County wells, 7 Seward County wells, 1 Thayer
County well, and 6 York County wells at 0.13 to 1.70 ppb. Atrazine was detected in 4 wells
in Dawson County at 0.37 to 0.5 ppb.
Wells with pesticide contamination were significantly closer to cropland than wells without
pesticides. Almost two thirds (22/34) of all wells found containing one or more pesticides
were also contaminated with nitrate levels exceeding the MCL (10 mg/1). Strata I, with less
cropland and irrigation, had the smallest percentage of wells contaminated with pesticides.
Strata III, with the highest percentage of irrigated cropland (and concomitant agricultural
chemical application) had the highest number of drinking water wells where pesticides were
detected (25/34) and the highest mean nitrate-nitrogen level of all the strata examined. The
nitrate and pesticide contamination problems in Strata 111, through which the little Blue,
West Fork of the Big Blue, and the Big Blue Rivers run, may be the result of heavy
fertilizer and pesticide usage on irrigated cropland.
Driven wells were more contaminated with pesticides than wells that were drilled. Driven
wells tend to be more shallow and lack watertight casings, which would draw water from
more contaminated shallow aquifers and perched water tables than generally deeper drilled
wells, which can draw water from deeper, less contaminated sources. Wells that are deeper
tend to have less contamination with nitrates, pesticides and gross alpha radiation. This
7-NE-ll
-------
agrees with findings from the 1985 and 1986 studies in which it was found that the mean
depth of wells contaminated with nitrates or pesticides was significantly less than that of the
uncontaminated wells.
Jones, Russell L, S. Dwight Kirkland, and E.L. Chancey, Union Carbide Agricultural Products
Company, Research Triangle Park, North Carolina. Measurement of the Environmental
Fate of Aldicarb Residues in a Nebraska Sand Hills Soil, Study conducted in 1985.
(Reported in Applied Agricultural Research; 2(3): 177-182 (1987)).
Primary Objective
This study was conducted to support the registration of aldicarb. The objective of this study
was to measure the degradation and movement of aldicarb in the Nebraska Sand Hills using
an unsaturated and saturated zone field research study.
Design
The experimental site was an approximately 0.6-ha section of a cornfield 3 km (2 mi) south
of Bartlett, Nebraska in Wheeler County. This site was selected because of its shallow water
table and because its loamy sand soil and sand subsoils are typical of soils on which corn
is grown in Nebraska. Aldicarb was applied at planting on May 3, 1985, at a rate of 1.68
kg/ha (1.5 lb/A) in the seed furrow by using insecticide boxes located behind the seed
planter. Row spacing was 0.7 m (2.3 ft). The cornfield was irrigated according to normal
grower practice using a center pivot irrigation system. The plot was located at the edge of
the irrigated area. A site diagram is shown in Figure 1. To monitor shallow ground water
at the test site, 15 shallow wells were installed before application of aldicarb. Each well
consisted of 3.8-cm-diameter PVC pipe and a 0.3-m long PVC screen with 0.15-mm wide
slots. The 15 wells were arranged in five clusters, with one cluster located up-gradient (with
respect to ground-water flow) of the treated area, two clusters in the treated area, and two
clusters located 13.5 m down-gradient of the treated area. Bach cluster contained three
welis-one screened just below the water table (about 1.3 m at the time of installation), one
screened 1.5 m below the water table, and the third screened 3.0 m below the water table.
The wells were installed by manually augering to the water table and then driving the well
point to the desired depth.
Water samples were collected after well installation and at approximately 1,2,3,4,5,6, and
11.5 months after application. Aldicarb carbamate residue concentrations (aldicarb, aldicarb
sulfoxide, and aldicarb sulfone) were measured in soil and water samples by an HPLC
procedure using postcolumn reactions and fluorescence detection. The minimum detection
level was 1 ppb.
7-NE-12
-------
Results and Conclusions
Ground-water samples from the 15 wells sampled 1-11.5 months after treatment did not
indicate the presence of aldicarb residues in the saturated zone. Aldicarb was detected in
one of the 111 samples at its MCL of 3 ppb. The single detection was during the 2-month
sampling interval in which the wells had to be excavated and an extension pipe installed.
Topsoil was introduced into the wells during this procedure, which may have resulted in the
aldicarb detection. The absence of aldicarb residues in this well a month later, when more
downward movement of residue would have occurred in the soil, tends to support this
hypothesis. The absence of residues in the two shallow wells in the field screened 1.4-1.7
m and 1.7-2.0 m below the surface, as well as the decline in residues in the 0.6- to 0.9-m
stratum in the last soil sampling interval indicates that any aldicarb residues that may have
entered the saturation zone degraded relatively rapidly (probably at least as fast as the 15-
to 30-day half-life estimated for the unsaturated zone).
Exner, Mary E., and Roy F. Spalding, Water Center, Institute of Agriculture and Natural
Resources, University of Nebraska, Tel: 402-472-7547. Occurrence of Pesticides and
Nitrate In Nebraska's Ground Water, 1990. Summary report of pesticide data representing
all available information from 1975 through January 1, 1989. (Reported March 1990, 34
PP-)
Primary Objective
The report represents an atlas of ground-water nitrate and pesticide information from
several local and state agencies and the USGS. Its purpose is to characterize the areal
distribution of agrichemicals in Nebraska's ground water and to correlate the occurrence of
contamination with parameters that enhance leaching. The authors note that because of the
disparity in the numbers of different types of wells sampled and the nonrandom distribution
of the samples, these data should not be used to describe average conditions of the state's
ground water.
Design
The assessment is based on analysis of pesticide residues in 2,260 ground-water samples.
Data were provided by the USGS, the Nebraska Departments of Health (NDOH) and
Environmental Control (NDEC), the Natural Resources Districts (NRDs), and the Lincoln-
Lancaster County Health Department (LLCHD). The database also includes data from the
authors' studies at the Conservation and Survey Division (CSD) of the University of
Nebraska. All ground-water samples included in the assessment were collected and
analyzed by accepted protocols for the purpose of monitoring and researching ground
and/or drinking water quality. Additional data available from other sources were not
included due to the questionable integrity of sampling techniques or preservation and
storage methods used. The pesticide data included in the atlas represent all information
available before January 1, 1989. The earliest results were obtained in 1975 for atrazine.
In instances where wells were sampled more than once or by more than one agency, only
the most recent data were used.
7-NE-13
-------
Samples collected by the NDOH, NRDs, and the LLCHD were analyzed for the following
pesticides: alachlor, atrazine, carbaryl, carbofuran, chlorpyrifos, cyanazine, ethyl parathion,
fonofos, methyl parathion, metolachlor, metribuzin, terbufos, and trifluralin at detection
limits in the parts per trillion range. Carbaryl and carbofuran were analyzed by HPLC; all
other pesticides were analyzed by GC using EPA method 622 (USEPA 1982) and other
methods as appropriate. Pesticides were confirmed by GC-MS. The CSD samples were
analyzed by GC-MS using the coincidence of retention time and the coincidence of full scan
mass spectra; NDEC samples were analyzed by GC-MS as well. USGS samples were
analyzed by the two-column confirmation method, and were not confirmed by GC-MS. The
reported triazine detection limit for USGS samples was 0.05 ppb, slightly higher than that
reported for all other agencies.
The areal sample distribution is different for each pesticide because each agency analyzed
its samples for different pesticides. Only atrazine was measured in all samples taken for
pesticide analysis. Distribution of samples indicates that, with the exception of two areas,
one in extreme eastern and the other in western Nebraska, ground water in most of
Nebraska has been sampled for atrazine. Ground water in both of these areas was sampled
in 1989, but data were not available for inclusion in the atlas. Sampling in Douglas, Sarpy,
Cass, Saunders, and Butler Counties in eastern Nebraska concluded a three-year
investigation in the Lower Platte River Valley. Sampling in Sioux, Dawes, Sheridan, Morrill,
Garden, Deuel, Cheyenne, Kimball, and Banner Counties in the western Panhandle, and the
three neighboring counties of Grant, Arthur, and Keith completed the last year of the
NDOH's 5-year CDC assessment.
Results and Discussion
Atrazine was by far the most frequently detected of the heavily sampled pesticides. It was
detected in 13.4% of the 2,260 samples. The majority (78%) of the wells with detectable
concentrations of atrazine contained only trace levels of 1 ppb or less. A total of 22 wells
had atrazine levels greater than the MCL of 3 ppb. Two wells contained greater than 80
ppb atrazine, concentrations well above normally encountered levels. One of the wells was
a shallow 10-ft monitoring well located down-gradient from an irrigated corn field. The
highest concentration of 107 ppb occurred in a domestic well in an area where the depth
to water was about 85 feet. A spill or back-siphoning accident could have contaminated this
well. Some of the 6 wells in which atrazine was detected at 5 to 10 ppb were located in
fields with irrigation reuse pits. These irrigation wells could be influenced by seepage from
the pits during the spring. Because spring runoff in the reuse pits is not recycled to the field
until mid to late June when the irrigation season begins, pesticides in reuse pits can seep
into the ground water for over a month.
The regional variability of atrazine concentrations results from areal variability in matric and
preferential flow under normal framing practices, differences in usage, and changes in
geohydrology that influence atrazine transport in both the unsaturated and saturated zones.
About 70% of the atrazine detections occurred where the ground water is highly vulnerable
to contamination and nonpoint nitrate contamination has been documented. In addition,
there were more pesticide detections in shallow wells than in deep wells, in wells without
7-NE-14
-------
sanitary seals than in those with seals, and in wells adjacent to row-cropped areas than in
those farther away.
About 30% of the atrazine detections are in areas where it is more than 50 feet to ground
water. Excluding the well in Phelps County with 107 ppb atrazine, concentrations were
generally in the low ppts. Only 5 wells in this group contained more than 1 ppb atrazine
and 3 of those appeared to be influenced by seepage from runoff retention structures and
reported spills. The trace levels of atrazine in the remaining wells in irrigated corn-growing
areas with greater than 50 feet to ground water could result from preferential flow channels
within fine-textured sediments.
Only 16 of the 2069 wells sampled for alachlor contained detectable concentrations (0.8%).
Fourteen of the 16 detections were at trace levels of <0.40 ppb. Only 2 wells had
detections exceeding the 2-ppb MCL for alachlor. The random distribution of these five
wells dispersed throughout eastern and central Nebraska suggests that misuse, overuse, or
back siphoning could be causes of contamination. Three of the wells were in areas where
it is more than 50 feet to ground water. The sample with the highest alachlor level (20.7
ppb) also contained two other pesticides, which indicated there may have been an accidental
spill or misuse of the chemical.
Propachlor was detected in 18 of 145 samples tested. The highest reported concentration
was 3.5 ppb, well below the LHA of 90 ppb. Propachlor was detected only in samples
collected by USGS and analyzed by private laboratories sunder USGS contract. Most of
the detectable concentrations of propachlor were in the irrigated corn-growing areas of the
Central Platte Valley and Gosper and Phelps Counties. Based on the fact that metolachlor
usage is heavier in corn-growing areas, has a longer half-life, and is more mobile according
to the soil sorption index, if most propachlor detections resulted from leachates from
nonpoint sources, metolachlor rather than propachlor would be more likely to be detected
in the ground water. This was not the case. The authors proposed that the use of
propachlor to control weeds around irrigation wells may have increased the likelihood of
its direct downward movement through the gravel pack in the annular space around the
unsealed wells.
In addition to atrazine, alachlor, and propachlor, 11 other herbicides and insecticides were
detected in ground water. The frequency of detection of insecticides was much lower than
for herbicides. Most of the additional herbicides were triazines, including cyanazine
(detected in 4 drinking water wells and 6 irrigation wells), simazine (detected in 3 drinking
water wells and 11 irrigation wells), propazine (detected in 6 irrigation wells), ametryne
(detected in 1 drinking water well), and prometone (detected in 2 irrigation wells). Sample
collection for the triazines was limited almost exclusively to areas highly vulnerable to
contamination; 6 samples with detectable propazine concentrations, and as many as four
samples with detectable simazine levels were from wells in the same section.
Metolachlor (detected in 5 drinking water wells and 1 irrigation well) was the only amide
herbicide detected other than the alachlor and propachlor detections already discussed.
Trifluralin was present in several closely spaced monitoring wells adjacent to an artificial
7-NE-15
-------
recharge structure and in one domestic well at concentrations well below the LHA of 5 ppb.
Because trifluralin was detected in the monitoring wells during the first sampling but not in
subsequent samplings, the detections are not considered to be accurate. The herbicide 2,4-
D was measured in only 73 samples largely because its analytical scheme increases the time
and expense of analysis. The two detectable concentrations were well below the LHA of
70 ppb. The three detectable insecticides were dieldrin (detected in 2 drinking water wells)
and fonofos and terbufos, detected in 1 drinking and irrigation well, respectively of the 1,435
samples analyzed for them. Carbaryl, ethyl and methyl parathion, and metribuzin were not
detected in Nebraska ground water.
The authors noted that to minimize exposure to pesticides in drinking water, wells should
be screened in the deepest portion of the aquifer, constructed with tight seals to guard
against surface infiltration, and situated as far as possible from cropped and irrigated fields.
Results also indicated that sprinkler irrigation is preferable to gravity irrigation; under
gravity irrigation the vertical movement of nitrate is faster at the head of the field. Such
preferential percolation also could enhance the vertical movement of atrazine and other
pesticides.
7-NE-16
-------
PESTICIDE SAMPLING IN TIE STATE OF NEB8ASX*



HElt; RESULTS
SAMPLE RESULTS
*AKSE Of
CONCEN-
TRATIONS
WSTICIOt
COUkTT
OAT£
TOTAL
WEILS
SAMPLED
# 01
positive
WELLS
TOTAL #
SAMPLES
t Of
POSITIVE
SAMPLES


YEAR/MONTH

I
act
<
HCt

i
HCL
MCL
1,2-D
W.SPECIF1E0
COWiTtES
Before
1989/1
72
0
0
72
0
0


SETA PAKA
Before
1989/1
1
0
1
1
0
1
0.01
TOTAL DISCRETE
WELLS/SAMPLES


73
0
1
73
0
1
0.01
; Atachlor*
AOArtS
Before
1989/1
58
0
0
58
0
0


ANTELOPE
Before
1989/1
39
0
0
39
0
0


SLAIliE
Before
1989/1
26
0
0
26
0
0


BOOSE
Before
1989/1
26
0
0
26
0
0


BOTD .
Before
1989/1
29
0
0
29
0
0


BROUM
Before
1989/1
14
0
0
14
0
0


BUFfALO
Before
1989/1
67
0
1
67
0
1
<0.40

BURT
Before
1989/1
17
0
0
17
0
0


BUTLER
8efore
1989/1
2
0
0
2
0
0


CEDAR ...
Before
1989/1
22
0
0
22
0
0


CHASE
Before
1989/1
35
0
0
35
0
0


CHERRT
Before
1989/1
21
0
0
21
0
0


CLAY
Before
1989/1
43
0
0
43
0
0


"COtfAX
Before
1989/1
18
1
0
18
1
0
20.96

CLWiHG
Before
1989/1
27
0
0
27
0
0


CUSTER
Before
1989/1
35
0
1
35
0
1
<0.40
7-NE-17
-------
PESTICIDE SAMPLING IN THE STATE Of NEBRASKA
1


WELL RESULTS
¦ SAMPLE RESULTS
JWNC6 OF
CONCEN-
TRATIONS

PESTICIDE
COUNTY
DATE
~ TOTAL
WELLS
SAMPLED
# Of
POSITIVE
WELLS
TOTAL #
SAMPLES
* Of
POSITIVE
: SAWLES


YEAR/HOWTH

t
Ma
¦ ¦ ¦ V .
HCL

t
HCL
Net
(AUchlor)
DAKOTA
Before
1989/1
5
0
0
5
0
0


DAWSON
Before
1989/1
93
0
3
93
0
3
<0.40-0.822

DIXON
Before
1989/1
9
0
0
9
0
0


00051
Before
1989/1
31
0
1
31
0
1
<0.40

OUNOf '
Before
19B9/1
21
0
0
21
0
0


FILLHOKE
Before
1989/1
29
0
0
29
0
0


FRAKKtJK
Before
1989/1
14
0
0
14
0
0


fROHTISR
Before
1989/1
12
0
0
12
0
0


fURfcAS '
Before
1989/1
5
0
0
5
0
0


GAGE
Before
1989/1
9
0
0
9
0
0


:GMfJEL8
Before
1989/1
16
0
0
16
0
0


GOSPER
Before
1989/1
13
0
0
13
0
0


CREELO
Before
1989/1
H
0
0
14
0
0


HALL
Before
1989/1
56
0
1
56
0
1
<0.40

hAHlLTOJ
Before
1989/1
62
0
0
62
0
0


HARLAN
Before
1989/1
16
0
0
16
0
0


HAVES
Before
1989/1
10
0
0
10
0
0


HITCHCOCK
Before
1989/1
16
0
0
16
0
0


HOLT
Before
1989/1
142
0
0
142
0
0


HOOKER
Before
1989/1
9
0
0
9
0
0

7-NE-18
-------
PESTICIDE SAMPLING IN THE STATE OF NEBRASKA

		--	•. .

WELL RESULTS
SAMPLE RESULTS
RANGE OF
CONCEN-
TRATIONS
Otfl/U
PEST ICISC
COUNTT
OATE
TOTAL
WELLS
SAMPLES
ff Of
POSITIVE
: WELLS :
TOTAL #
SAWLES
# Of
POSfUVE
SABLES
- '

YEAR/HOWTB

¦ l
Ma
*
HCL

T.
XCL

(AUchlor)
HC?WA(!f?
Before
1989/1
18
0
1
18
0
1
<0.40

JEFfERSOM
Before
1989/1
7
0
0
7
0
0


JOHUSO*
Before
1989/1
8
0
0
8
0
0


*EARNH
Before
1989/1
27
0
D
27
0
0


KEITH
Before
1989/1
1
0
0
1
0
0


KETA PAHA
Before
1989/1
14
0
0
14
0
0


KXOX
Before
1989/1
9?
0
1
97
0
1
0.95

LANCASTER
Before
1989/1
64
0
0
64
0
0


LINCOLN
Before
1989/1
53
0
0
53
0
0


LOGAN
Before
1989/1
20
0
0
20
0
0


LOUP
Before
1989/1
16
0
0
16
0
0


NAD[SON
Before
1989/1
31
0
0
31
0
0


HCPPERSON
Before
1989/1
25
0
0
25
0
0


HERRICK
Before
1989/1
25
0
2
25
0
2
<0.40

JJANCE
Before
1989/1
4
0
0
4
0
0


NEKAMA
Before
1989/1
6
0
0
6
0
0


NUCKOLLS
Before
1989/1
22
0
0
22
0
0


..PAWNEE
Before
1989/1
16
0
0
16
0
0


PERKINS
Before
1989/1
31
0
0
31
0
0


'PKECPS:',:.-
Before
1989/1
24
0
0
24
0
0

7-NE-19
-------
PESTICIDE SAMPLING IN THE STATE OF NEBRASKA



WELL RESULTS
SAHPL6 RESULTS
SAUCE OF
CONCEN-
TRATIONS
-------
PESTICIDE SAMPLING IN THE STATE OF NEBRASKA
.->



UEit RESULTS
SAHPLE RESULTS
RAKSE OP
tO#CEH-
TRAT COWS
(MS/O
pesncifiE
COUNTY

TOTAL
WELLS
SAKPLE3
# Of
POSIflVE
WELLS
TOTAL *
SAMfLES
* Of
POS!JIVE
SAMPLES


YEAR/MOUTH

I
MCI
¦v
HCl

i
KCL
*
xa '
CAlachlor)
WRIELES
Before
1989/1
19
0
0
19
0
0


Y02K
Before
1989/1
37
0
1
37
0
1
0.41-2.00®
TOTAL DISCRETE
WELLS/SAMPLES


2,069
2
14
2,069
2
14
0.02-20.6
| Atdicarb
«KEfL£fi
1985/5-
1986/4
l "
1
14
111
1
110
1-3
TOTAL DISCRETE
1 WELLS/SAMPLES


I "
1
14
111
1
110
1-3

UNSPECIFIED
COUNTIES
Before
1989/1
103
0
0
103
0
0


YOPK
Before
1989/1
1
0
1
1
0
1
0.01
TOTAL DISCRETE
WEILS/SAMPLES


104
0
1
104
0
1
0.01

' ADAHS- :.- '
1975-1989/1
58
0
S
58
0
5
0.01-0.907

-ANTELOPE---'"
1975-1989/1
39
0
0
39
0
0


SlAlNE:"'-r-----:-." -
1975-1989/1
26
0
0
26
0
0


80»E
1975-1989/1
32
0
1
32
0
1
0.01-0.50

80X SUT?6 ¦:: ;-
1975-1989/1
10
0
1
10
0
1
0.51-1,00

boyo
1975-1989/1
29
0
0
29
0
0


: firROHH ^ - :
1975-1989/1
14
0
3
14
0
3
0.01-1.00

«uf f Att)--
1975-1989/1
85
5
23
85
5
23
0.01->5.00

3URT
1975-1989/1
17
0
0
17
0
0


BUTLER
1975-1989/1
3
0
1
3
0
1
0.01-0.50

CEDAR
1975-1989/1
22
0
a
22
0
0


CHASE
1975-1989/1
40
0
2
40
0
2
0.01-0.50

CHERRY
1975-1989/1
21
0
0
21
0
0


CHEYENNE"
1975-1989/1
12
1
8
12
1
8
0.01-»3.00

- Cittf 'r r ':
1975-1989/1
43
0
9
43
0
9
0.01-0.573

COLFAX: ,
1975-1989/1
22
0
4
22
0
4
0.01-1.00

-CLMIM8
1975-1989/1
27
0
0
27
0
0

7-NE-21
-------
PESTICIDE SAMPLING [I THE STATE OF NEBRASKA



WEIL RESULTS
SAMPLE RESULTS
KAHSE OF
COttCEN-
TRAT IONS
<» S/O
PESTICIDE
COUKTlf
DATE
TOTAl
WEILS
- 5AKPLE0
# Of ¦
posrnvE
:: WELLS-
TOTAL #
SAMPLES
f or
POSITIVE
SAMPLES '


YEAftyHWTH

I
* -
HCL

' : .
XCL
. v ...
net
(Atraxirw)
CUSTER
1975-1989/1
35
0
1
35
0
1
0,01-0.50

DAKOTA
1975-1989/1
5
0
0
5
0
0


DAWSON
1975-1989/1
93
0
16
93
0
16
0.01-3.00

OIXOH
1975-1989/1
9
0
0
9
0
0


OODGE
1975-1989/1
35
1
9
35
1
9
0.01-»3.00

ouwdv
1975-1989/1
21
0
1
21
0
1
0.01-0.50

FrnxoRC
1975-1989/1
33
1
9
33
1
9
0.01»3.00


1975-1989/1
14
0
0
14
0
0


FftOMTI€R
1975-1989/1
12
0
1
12
0
1
0.163

'furms
1975-1989/1
5
0
1
5
0
1
0.410


1975-1989/1
9
0
1
9
0
1
1.01-3.00

GARFIELO
1975-1989/1
28
0
2
28
0
2
0.01-0.50

rSOSP'eR
1975-1989/1
18
0
0
18
0
0


¦"•GREf LEY • •
1975-1989/1
14
0
1
14
0
1
0.01-0.50

mi
1975-1989/1
67
3
32
67
3
32
0.01-»3.00

'hamltch----.-
1975-1989/1
62
0
6
62
0
6
0.147-0.718

HARLAN
1975-1989/1
16
0
2
16
0
2
0.01-0.50

HAYES
1975-1989/1
14
0
0
14
0
0


HITCHCOCK
1975-1989/1
16
0
1
16
0
1
0.01-0.50

HOLT
1975-1989/1
168
1
17
168
1
17
0.01-22.70

hooker
1975-1989/1
9
0
0
9
0
0


HOWARD ¦
1975-1989/1
18
0
1
18
0
1
0.51-1.00

JEFFERSON
1975-1989/1
7
0
0
7
0
0


'JOMWSON •
1975-1989/1
8
0
2
8
0
2
0.01-0.50

KEARNEY
1975-1989/1
35
1
5
35
1
5
0.01->3.00

KETTH
1975-1989/1
1
0
0
1
0
0


KEYA PArvA
1975-1989/1
14
0
0
14
0
0


-|CKC»c: ':
1975-1989/1
97
0
1
97
0
1
0.36

' LANCASTER-::;::
1975-1989/1
64
1
3
64
1
3
0.01->3.00

: LINCOLN
1975-1989/1
53
0
0
53
0
0

7-NE-22
-------
PESTICIDE SMPUNG III THE STATE OF NEBRASKA




WEIL RESULTS
SAMPLE RESULTS
fiAtfCE OF
COfcCEW-
T«ATIO«S
(J»3/U
PESU-CI0E
count r
GATE

TOTAL
WELLS
SAW LED
n or
POSITIVE
WELLS
TOTAL *
! SAMPLES
# Of
POSITIVE
SAHPLES


IfEAR/HONTH
20
' S
;xa *
• ¦¦ V
MCl

*CL
MCL
(Atrazirte)
tOGAM
1975-1989/1
0
0
20
0
0


LOt'P
1975-1989/1
16
0
0
16
0
0


KAOtSON
1975-1989/1
31
0
0
31
0
0


HCPKERSON
1975-1989/1
25
0
1
25
0
1
0.01-0.50

NEftBlCK
1975-1989/1
42
3
25
42
3
25
0.01-»3.00

UANCE
1975-1989/1
4
0
0
4
0
0


II :«WAHA
1975-1989/1
6
0
1
6
0
1
1.01-3.00
III iiocicdLir
1975-1989/1
22
4
13
22
4
13
0.01-»3.00

PAWNEE
1975-1989/1
16
0
4
16
0
4
0.01-1.00

PERKINS
1975-1989/1
31
0
0
31
0
0


PHELPS
1975-1989/1
32
1
9
32
1
9
0.01-107.2

PIERCE
1975-1989/1
22
0
0
22
0
0


: M.^TTE
1975-1989/1
36
0
1
36
0
1
0.01-0.50

POLK
1975-1989/1
26
0
7
26
0
7
0.13-1.70

#10 WILLOW"'*.'
1975-1989/1
13
0
0
13
0
0


fttCHARDSOil
1975-1989/1
21
0
8
21
0
8
0.01-1.00

. ItOCK.
1975-1989/1
28
0
1
28
0
1
0.01-0.50

SAL J ME
1975-1989/1
44
0
4
44
0
4
0.01-0.50

¦ 'SAUCERS
1975-1989/1
4
0
3
4
0
3
0.01-0.50

. scons
BLUFF ='¦•: = .¦¦¦
1975-1989/1
43
0
1
43
0
1
0.819

¦SEWARD
1975-1989/1
61
0
8
61
0
8
0.01-1.56

SHERMAN ^ ¦ :; ¦•:
1975-1989/1
15
0
0
15
0
0


STANTON r:;X
1975-1989/1
16
0
1
16
0
1
0.178

'ntAVeii
1975-1989/1
33
0
8
33
0
8
0.01-0.57


1975-1989/1
27
0
0
27
0
0


TWRSTON
1975-1989/1
5
0
0
5
0
0


' 1 VAlilY H':
1975-1989/1
15
0
0
15
0
0


¦mshjwtc^
1975-1989/1
13
0
1
13
0
1
0.58


1975-1989/1
22
0
0
22
0
0

7-NE-23
-------
PESTICIDE SMTL1NG IN THE STATE OF NEBRASKA



: WELt RESULTS
SAMPLE JtESVLTS
ftAMGE OF
CONCEtl-
TRAUOHS
(P9/l>
PfSTICICE
COUNTY
DATE
:::?0TAi
VEILS
SAWLED j
* OF
POSITIVE .
WELLS
TOTAL #
SAMPLES
# Of
POSITIVE
SAMPLES


year/month

' i
MO.
<
k:l

i
MCI
: ¦¦
HIM
(Atrszirie)
WEBSTES
1975-1989/1
9
0
2
9
0
2
0.01-3.00


1975-1989/1
41
0
3
41
0
3
0.01-3.00

: TQtK""'™
1975-1989/1
61
0
11
41
0
11
0.01-3.00
TOTAL DISCRETE
WELLS/SAHPIES


2,260
22
281
2,260
22
281
0.01-107.2
.iutyiftte"'-"
•;oMpE.ci«H>-.r
COUNTIES¦¦
Before
1989/1
71
0
0
71
0
0

TOTAL DISCRETE
WELLS/SAMPLES


71
0
0
71
0
0

Car-ban?!: -..v.:
ficrro
SORT
1987
1987
29
10
0
0
0
0
29
10
0
0
0
0


CEOAR
1987
12
0
0
12
0
0


COLTAX
1987
12
0
0
12
0
0


XUNItlG
1987
18
0
0
18
0
0


DAKOTA
1987
5
0
0
5
0
0


DAWSOW
1987
38
0
0
38
0
0


DIXON-'"
1987
5
0
0
5
0
0


DODGE
1987
14
0
0
14
0
0


FI LtlMORE: ' '
1987
21
0
0
21
0
0


*fYA:MHA ¥v:
1987
13
0
0
13
0
0



1987
87
0
0
87
0
0


pierce ¦v--
1987
15
0
0
15
0
0


POLK-'
1987
22
0
0
22
0
0


¦SALINE: :
1987
39
0
0
39
0
0


: :s£w*a£»'o:
1987
58
0
0
58
0
0


STANTON
1987
10
0
0
10
0
0


- THAYER
1987
23
0
0
23
0
0


¦ TKURSTOS:-. -V-'
1987
4
0
0
4
0
0


WASHINGTON-'
1987
13
0
0
13
0
0

7-NE-24
-------
PESTICIDE SMC11N6 IH THE STATE OF NEBIASU



WELL RESULTS
SAMPLE RESULTS .
RANGE OF
.."•COHCEN-
TJUTtOHS
twrt)
PESTICIDE
COUNTT
OATE
TOTAl
mis
SAMPLEC
9 Of
POSITIVE
WELLS
TOTAL #
SAMPLES
# or
POSITIVE
SAMPLES


YEAR/MQWTH

I
ha
ML

t
KCL
¦ < ¦
HCL
(CarbervL)
WAYNE
1987
16
0
0
16
0
0


YORK
19B?
27
0
0
27
0
0

TOTAL DISCRETE
WEILS/SAMPLES


491
0
0
491
0
0

Cerbofu«*«n
. UNSPECIFIED
-xou»riES-:
Before
1989/1
1008
0
0
1008
0
0


•8QYD ' ¦
1987
29
0
0
29
0
0


9URT
1987
10
0
0
10
0
0


;CET)AR- ••
1987
12
0
0
12
0
0


COLFAX
1987
12
0
0
12
0
0


CLWIHS
1987
18
0
0
18
0
0


DAKOTA
1987
5
0
0
5
0
0


MtVSQB
1987
38
0
0
38
0
0


DIXON
1987
5
0
0
5
0
0


'0ODGE
1987
14
0
0
14
0
0


f!LLHORE
1987
21
0
0
21
0
0


KEY A PAHA
1987
13
0
0
13
0
0


KXOX
1987
87
0
0
87
0
0


PIERCE
1987
15
0
0
15
0
0


POLtf
1987
22
0
0
22
0
0


:':SAil'DE
1987
39
0
0
39
0
0


SEVARO
1987
58
0
0
58
0
0


' SrAWTOS": :=-::'-V:v":
1987
10
0
0
10
0
0


THAYER iv'.i'fi:::
1987
23
0
0
23
0
0


: TWRSTONV
1587
4
0
0
4
0
0


VAS'tUHGTOX .
1987
13
0
0
13
0
0


¦ :way«e '
1987
16
0
0
16
0
0


YORK
1987
27
0
0
27
0
0

TOTAL DISCRETE
WEILS/SAMPLES


1,499
0
0
1,499
0
0

7-NE-2 5
-------
PESTICIDE SAMPLING 1M THE STATE OF NEBRASKA



UELL-RESULTS:;;-:^

*A«JE OF
CONCEN-
TRATIONS
(flS/U
PESTICIDE
COUNTY
0AT£
TOTAL
wais
SAMPLED
Qf ¦
POSITIVE
WELLS
TOTAL #
SAMPLES
# Of
POSITIVE
SAKPLES


YEAR/H0WT8

I
MCL
¦ *
HCL

MCL
HCL
ChtorpyrifM
•WISPCCIFJEO
counties
Before
1989/1
944
0
0
944
0
0


tow
198?
29
0
0
29
0
0


iURT
198?
10
0
0
10
0
0


CEtlAR
198?
12
0
0
12
0
0


COLf AX
198?
12
0
0
12
0
0


CUNING
1987
18
0
0
18
0
0


DAKOTA
198?
5
0
0
5
0
0


DAWSOH
198?
38
0
0
38
0
0


OSXOK -
198?
5
0
0
5
0
0


5 BODGE
1987
14
0
0
14
0
0


FILtHORI
1987
21
0
0
21
0
0


"KEYA PAHA
1987
13
0
0
13
0
0


jcwx'-.:^
1987
8?
0
0
8?
0
0


PIERCE
1987
15
0
0
15
0
0


:J>OLK :
1987
22
0
0
22
0
0


¦SALINE
1987
39
0
0
39
0
0


SEVJASO
1987
58
0
0
58
0
0


STANTON
1987
10
0
0
10
0
0


THAY6*
1987
23
0
0
23
0
0


' THURSTOK
1987
4
0
0
4
0
0


" WASHINGTON ';-;
1987
13
0
0
13
0
0


WAfME ¦'
1987
16
0
0
16
0
0


-"irORIC V:''
1987
27
0
0
27
0
0

TOTAL DISCRETE
WELLS/SAMPLES


1,435
0
0
1,435
0
0

Cyarwztrw
unspecified
counties
Before
1989/1
1082
0
0
1082
0
0


: Bor&
1987
29
0
0
29
0
0


BUFFALO
Before
1989/1
1
0
1
1
0
1
<3.2®

8URT
1987
10
0
0
10
0
0

7-NE-26
-------
PESTICIDE SAMPLING IN THE STATE OF NEBRASKA



UEli:'j!ESyiTS

RANGE OF
CONCEN-
TRATIONS
PESTICIDE
COUNTY
OAIE


w
11VI
1 s
TOTAL #
SAMPLES
POSITIVE
nSAWLES:-

..lOIAv
••iriiaL*:'-::
SAKPIED:
• POSI
UE


KEAft/HOKTH

•Net -
; « : •
MCL

: MCL
-wet

(Cyartazirte)
CEDAR
1987
12
0
0
12
0
0


COLFAX
1987
12
0
0
12
0
0


CUMtNG
1987
18
0
0
18
0
0


DAKOTA
1987
5
0
0
5
0
0


8AWSON
1987
38
0
0
38
0
0



1985/9
1
1
0
1
1
0
3.2


Before
1989/1
3
0
3
3
0
3
<3.2®

itiXOM
1987
5
0
0
5
0
0


OCCCE
1987
14
0
0
14
0
0


FiLLHOfiE
1987
21
0
0
21
0
0



Before
1989/1
1
0
1
1
0
1
<3.2s

KFYA PAHA
1987
13
0
0
13
0
0


*NCX ' * *
1987
87
0
0
87
0
0


MOtfAftD
Before
1989/1
1
0
1
1
0
1
«3.2b

5>r*»C£ !-! :
1987
15
0
0
15
0
0


POLIC
Before
1989/1
1
0
1
1
0
1
<3.2®


. 1987
22
0
0
22
0
0


SAL14E
1987
39
0
0
39
0
0


SEVARD
1987
58
0
0
58
0
0


'STANTON :
1987
10
0
0
10
0
0


THATER
1987
23
0
0
23
0
0


THURSTOK
1987
4
0
0
4
0
0


. 'WASHINGTON'
1987
13
0
0
13
0
0


' 'UAYIIE':
1987
16
0
0
16
0
0

7-NE-27
-------
PESTICIDE SAMPLING IN THE STATE OF NEBRASKA



UELL RESULTS
I ..... I.
SAKPLE RESULTS
. RAliCE OF ::
CCfcCEU-
TRATIGkS

HCL
Md
(Cyanazirw)
WHEELER
Before
1989/1
1
0
1
1
0
1
<3.2®

TTCRK
Before
1989/1
1
0
1
1
0
1
<5.2*


1987
27
0
0
27
0
0

TOTAL DISCRETE
WELLS/SAMPLES


1,583
1
9
1,583
1
9
<3.2-3.2
Olaifnon
-UUSPfClflEC]:
rcouirtlES
Before
1989/1
54
0
0
54
0
0
|
TOTAL DISCRETE
WELLS/SAMPLES


54
0
0
54
0
0
|
-.bicarcka ¦¦ •
UNSPECIFIED :
-counties-'-;;
Before
1989/1
36
0
0
36
0
0

TOTAL DISCRETE
WELLS/SAMPLES


36
0
0
36
0
0

Oieldrln-;-
WSPECJflEO
COUNTIES •
Before
1989/1
33
0
0
33
0
0


BUfFAlO
Before
1989/1
1
0
1
1
D
1
0-0.05*

;i£*AVPAHA;::-v
Before
1989/1
1
0
1
1
0
1
0-0.05®
TOTAL DISCRETE
WELLS/SAMPLES


35
0
2
35
0
2
0-0.5
EPIC
•dwsipfcrtiife-'-
cooMties
Before
1989/1
48
0
0 .
48
0
0

TOTAL DISCRETE
WELLS/SAMPLES


48
0
0
48
0
0

Fooofos
UNSPECIf IEO
COUNTIES
Before
1989/1
943
0
0
943
0
0


80YD
198T
29
0
0
29
0
0


: BURT
1987
10
0
0
10
0
0


CECAR
1987
12
0
0
12
0
0


COLfAX
1987
12
0
0
12
0
0


CliNlHG
1987
18
0
D
18
0
0


OAftJTA;
1987
5
0
0
5
0
0

7-NE-28
-------
PESTICIDE SAMPLING IN THE STATE Of NEBRASKA





.-mi-'results'
: SAMPLE RESULTS
SAIfCE OF
CONCEW-
TRATIOKS
(Mft)
PESTICIDE
COUNTY '
DATE

1
roTAi
JEUS
kMPLED
posmvB
WELLS

TOTAL
SAMPLES
#.Of
; ^6siTrv*'-:-:
SAWLES :-


YEAR/KOWTa

L
MCL
<
MCL

HCL
MCt
(Fonofos)
DAWSON
1987
38
0
D
38
0
0


OtXON
1987
5
0
0
5
0
0


&CCGE
1987
14
0
0
14
0
0


FILLMORE
1987
21
0
0
21
0
0


FftASKLIS
Bcfor*
1989/1
1
0
1
1
0
1
0.05

«TA PAHA
1987
13
0
0
13
0
0


::0m
1987
87
0
0
87
0
0


PIERCE
1987
15
0
0
15
0
0



1987
22
0
0
22
0
0


SALINE
1987
39
0
0
39
0
0


'¦SEWARD
1987
58
0
0
58
0
0


STANTON
1987
10
0
0
10
0
0


THAYER
1987
23
0
0
23
0
0


" THURSTON: :•.
1987
4
0
0
4
0
0


;-.WASHINGTON .
1987
13
0
0
13
0
0



1987
16
0
0
16
0
0


":roaic-
1987
27
0
0
27
0
0

TOTAL DISCRITE
WELLS/SAMPLES


1,435
0
1
1,435
0
1
0.05
HetetachlDf
unspecified
taMl'S'iL::-"
Before
1989/1
505
0
0
505
0
0


"sorb-i '•
1987
29
0
0
29
0
0


BURT
1987
10
0
0
10
0
0


CEOAR
1987
12
0
0
12
0
0


COLFAX
1987
12
0
0
12
0
0


'••CUMING
1987
18
0
0
18
0
0


DAKOTA
1987
5
0
0
5
0
0


DAWSON •'
Before
1989/1
1
0
1
1
0
1
0-2.32®


1987
38
0
0
38
0
0


"oiKow :
1987
5
0
0
5
0
0

7-NE-29
-------
PESTICIDE SAMPLING IN THE STATE OF NE88ASKA



WILL RESULTS
SAMPLE RESULTS
JtAHCE OF
COKCDI-
TRATCOKS
Otf/U
PESTICIDE
COUNTY
OATE
torn
WELLS
SAMPlEO
« Of
POSITIVE
WELLS
TCiTAL *
- 'SAMPLES
# Of
POSITIVE
SAMPLES


YEAft/KWTH

t
¦¦¦ Ha
*
MCt

£
MCL
<
MCL

DODGE
1987
14
0
0
14
0
0


MLIHORE
Before
1989/1
1
0
1
1
0
1
0-2.32®


1987
21
a
0
21
0
0


HWAKB
Before
1989/1
1
0
1
1
0
1
0-2.32*
-
- t£iK paha
1987
13
0
0
13
0
0


*HOX
1987
87
0
0
87
0
0


MESRIOT
Before
1989/1
1
0
1
1
0
1
0-2.32*

;#«RCE ' * * *
1987
15
0
0
15
0
0


POLS
Before
1989/1
1
0
1
1
0
1
0-2.32*


1987
22
0
0
22
0
0


SALINE
1987
39
0
0
39
0
0


: SEWARD
1987
58
0
0
58
0
0


STANTON
1987
10
0
0
10
0
0


THATER
Before
1989/1
1
0
1
1
0
1
0-2.32"


1987
23
0
0
23
0
0


THURSTON
1987
4
0
0
4
0
0


WSHJRGT0H : :
1987
13
0
0
13
0
0


'lAYNE
1987
16
0
0
16
0
0


YORK ¦:
1987
27
0
0
27
0
0

TOTAL DISCRETE
WELLS/SAMPLES


1,002
0
6
1,002
0
&
0-2.32
Metribuilrt
80YD
1987
29
0
0
29
0
0


BURT
1987
10
0
0
10
0
0


CEDAR
1987
12
0
0
12
0
0


COLFAX "
1987
12
0
0
12
0
0


¦CUMING
1987
18
0
0
18
0
0


DAKOTA
1987
5
0
0
5
0
0


DAUSOK
1987
38
0
0
38
0
0

7-NE-30
-------
PESTICIDE SAMPLING IN THE STATE OF NEBRASKA



UELL RESULTS
SAMPLE RESULTS
RAKCE OP
ccwcaj-
TRATIONS •
C«jAJ
PESTICIDE
COUNTY
©ATE
TOTAL
WEILS
SAHPIBJ
P Of
POSITIVE
VEILS
TOTAL #
SAMPLES
• Of
POSITIVE
SAKPLES

' ' 	
>£AR/MONTa

S
Ma
*
HCL

*CL
<
net
(Mftribuzin)
DfXOH
1987
5
0
0
5
0
0


DODGE
1987
14
0
0
14
0
0


FI LtXORE
1987
21
0
0
21
0
0


KEYA PAHA
1987
13
0
0
13
0
0


KNOX
1987
87
0
0
87
0
0


PIERCE
1987
15
0
0
15
0
0


POLK
1987
22
0
0
22
0
0


Saline
1987
39
0
0
39
0
0


" SEWARD
1987
58
0
0
58
0
0


STANTON
1987
10
0
0
10
0
0


,lKAyE8
1987
23
0
0
23
0
0


: :THU8STOS ''
19B7
4
0
0
4
0
0


:«ASHl»GTOK
1987
13
0
0
13
0
0


-WATHE
1987
16
0
0
16
0
0


"YORK
1987
27
0
0
27
0
0

TOTAL DISCRETE
WELLS/SAMPLES


491
0
0
491
0
0

PararhioT), 	
••• ethyl	
BOW
1987
29
0
0
29
0
0


BURT
1987
10
0
0
10
0
0


CEOAR
1987
12
0
0
12
0
0


CGLfAX
1987
12
0
0
12
0
0


CWIWG
1987
18
0
0
18
0
0


DAKOTA
1987
5
0
0
5
0
0


DAWSON
1987
38
0
0
38
0
0


oixon
1987
5
0
0
5
0
0


OOOCE
1987
14
0
0
14
0
0


FJLLflORE "¦
1987
21
0
0
21
0
0


KEYA PAHA
1987
13
0
0
13
0
0


KNOX
1987
87
0
0
87
0
0


PIERCE
1987
15
0
0
15
0
0

7-NE-31
-------
PESTICIDE SAMPLIBC II THE STATE OF NEBRASKA



RESULTS
SAMPLE RESULTS
JtAKGE OF
COHCEil-
THAT10KS
<#8/U
?ESTICiOC
COUHTY
DATE
TOTAL
tfTs-LS
SAMPLED
t Of
POSITIVE
WELLS
TOTAL #
SAMPLES
$ Of
POSITIVE
SAWLES


YEARyMOKTfl

t
HCl
*
m

..vji
¦ HCL
HCL
(Parathfon,
ethyl)
POLK
1987
22
0
0
22
0
0


SALINE
198?
39
0
0
39
0
0


SEWARD
1987
58
0
0
58
0
0


STAKTOM
1987
10
0
0
10
0
0


jhAyIr : -
1987
23
0
0
23
0
0


TMURSIOK ....
1987
4
0
0
4
0
0


WASHINGTON
1987
13
0
0
13
0
0


WAYkE
1987
16
0
0
16
0
0


VORt
1987
27
0
0
27
0
0

TOTAL DISCRETE
WEILS/SAMPLES


491
0
0
491
0
0

ParMhiraw
-methyl

80YB
1987
29
0
0
29
0
0


8U8T
1987
10
0
0
10
0
0


CEDAS
1987
12
0
0
12
0
0


COLFAX
1987
12
0
0
12
0
0


CLWI.NG
1987
18
0
0
18
0
0


DAKOTA 	
1987
5
0
0
5
0
0


: D AWSON
1987
38
0
0
38
0
0


OIXOM . ' ''"Cr '
1987
5
0
0
5
0
0


0006E
1987
14
0
0
14
0
0


:: ftLtWORE-. •••:
1987
21
0
0
21
0
0


¦ KFYA -PAHA ¦; •: -
1987
13
0
0
13
0
0


KNOX
1987
87
0
0
87
0
0


- PIERCE ' :
1987
15
0
0
15
0
0


Mr '•
1987
22
0
0
22
0
a


SALINE
1987
39
0
0
39
0
0


SEWARD-
1987
58
0
0
58
0
0


STANTON
1987
10
0
0
10
0
0


'THATER
1987
23
0
0
23
0
0


TrtjRSTON
1987
4
0
0
4
0
0

7-NE-32
-------
PESTICIDE SAMPLING IN THE STATE OF NEBRASKA



WELL RESULTS

SAMPLE RESULTS
RANCE Of
CONCEN-
TRATIONS
h'aret«
UNSPEC1Fl£D
:COUMTIIS
Before
1989/1
38
0
0
38
0 | 0

TOTAL DISCRETE
UELLS/SAMPLES


38
0
0
38
0 | 0

i Propamine
COUMTSES
Before
1989/1
167
0
4
167
0
4
0-0.11

SUFfAtG
Before
1989/1
4
0
4
4
0
4
0-0.11s

KEARNEY :
Before
1989/1
1
0
1
1
0
1


PHELPS
Before
1989/1
1
0
1
1
0
1
0-0.11®
TOTAL DISCRETE
UELLS/SAMPLES


173
0
10
173
0
10
0-0.11
: Proewtan:
UNSPECIFIED
COUNTIES
Before
1989/1
165
0
0
165
0
0


BUFFALO
Before
1989/1
2
0
2
2
0
2
0-0.09
TOTAL DISCRETE
UELLS/SAMPLES


167
.0
2
167
0
2
0-0.09
Propach lor^8 -
80ONE
Before
1989/1
1
0
0
1
0
0


BUFFALO v
Before
1989/1
7
0
1
7
0
1
<1.0

cusieR
Before
1989/1
1
0
0
1
0
0


CAWSCW :j
Before
1989/1
12
0
0
12
0
0

7-NE-33
-------
PESTICIDE SNPUNG IN THE STATE OF NEBRASKA



WELL RESULTS
SAMPLE results
fcAHGE OF
CONCEN-
TRATIONS
C#S/U
PESTICIDE
COUNT*
DATE
TOTAL
: WEILS
: SAMPLED
t Of
posuive
WELLS
TOTAL #
SAMPLES
# Of
POSITIVE
SAMPLES


:YEAiVKWT8- "'
7
I
Ma
¦¦¦*. .
MCI

V2'"
HCl-
%
NCL
(Prop»chlor)
DODGE
Before
1989/1
0
0
7
0
0


GACE
Before
1989/1
2
0
0
2
0
0


GAKfIELD
Before
1989/1
4
0
2
4
0
2
<1.0

COSPER
Before
1989/1
5
0
4
5
0
4
1.0-3.5


Before
1989/1
13
0
4
13
0
4
1.0-3.5

HAHILTOfl
Before
1989/1
1
0
0
1
0
0


mi
Before
1989/1
15
0
0
15
0
0


HOWAID
Before
1989/1
1
0
0
1
0
0


JOHNSON
Before
1989/1
8
0
0
8
0
0


KEARNEY .
Before
1989/1
4
0
3
4
0
3
1.0-3.5

KEYA PUik
Before
1989/1
1
0
0
1
0
0


LANCASTER
Before
1989/1
1
0
0
1
0
0


KESRI«
Before
1989/1
4
0
0
4
0
0


NEMAHA
Before
1989/1
6
0
0
6
0
0

NUCKOLLS
Before
1989/1
a
0
0
8
0
0

I PAWNEE
Before
1989/1
16
0
0
16
0
0


PHELPS
Before
1989/1
3
0
3
3
0
3
1.0-3.5

POLK
Before
1989/1
1
0
0
1
0
0


RICHARDSON ..
Before
1989/1
21
0
0
21
0
0


SALINE
Before
1989/1
1
0
0
1
0
0

7-NE-34
-------
PESTICIDE SAMPLING IN THE STATE OF NEBRASKA



WEU RESULTS
.;V:,:'SA»>U
RESULTS
&AKCE Of
COKCEU
TRATIOKS
tVi/U
PESTICIDE
COUNTT
DATE
TOTAl
WEILS
SAMPLED
* Of
POSITIVE
WELLS
TOTAL #
::SAMPLES
, Of
POSITIVE
SAMPLES


YEAR/MONTH

¦f
Ma-
<
HCL

i
MCL
HCt
(Propachtor)
VHEELES
Before
1989/1
2
0
1
2
0
1
1.0-3.5

vast
Before
19B9/1
1
0
0
1
0
0

TOTAL DISCRETE
vells/samples


146
0
IB
14*
0
18
<1.0-3.5
imazint.;/v.;.:-,v
- COUNTIES';'
Before
1989/1
159
0
0
159
0
0


JUFfAtO
Before
1989/1
3
0
3
3
0
3
0-0.69®

HALL
Before
1989/1
7
0
7
7
0
7
0-0.69®

KEARNY
Before
1989/1
1
0
1
1
0
1
0-0.69®

JfEYA PAHA
Before
1989/1
1
0
D
1
0
1
0-0.69®

WHEELER
Before
1989/1
2
0
2
2
0
2
0-0.69®
TOTAL DISCRETE
wells/samples


173
0
13
173
0
14
0-0.69®
;: Jerbufos
UMSP£CinEO:-:
•COUNTIES ¦
Before
1989/1
943
0
0
943
0
0



1987
29
0
0
29
0
0


?uor
1987
10
0
0
10
0
0


CE0A1
1987
12
0
0
12
0
0


COLFAX
1987
12
0
0
12
0
0


' CUMING
1987
18
0
0
18
0
0


OAPCOTA
1987
5
0
0
5
0
0


DAWSON- '• :
1987
38
0
0
38
0
0


DJXOM
1987
5
0
0
5
0
0


.'DODGE.
1987
14
0
0
14
0
0


FILLMORE
1987
21
0
0
21
0
0


HALL
Before
1989/1
1
0
1
1
0
1
0.02

KFYA PAHA
1987
13
0
D
13
0
0

7-NE-35
-------
PESTICIDE SAMPLING IN THE STATE Of NEBRASKA



WEIL RESULTS
SAMPLE RESULTS
RAKGE Of
COHCOJ-
TRATIOKS
fws/i)
PESTICIDE
COUNT?
BATE
TOTAl
VEILS
SAWLEB
# Of
POSITIVE
WELLS
TOTAL #
SAMPLES
# Of
POSITIVE
SAW>LES


YEAR/KOHTH

I
KCt
HCt

4
HCL
NCI
(Terbufosl
KSOX'
198?
87
0
0
87
0
0


PIERCE
1987
15
0
0
15
0
0


¦POLK
1987
22
0
0
22
0
0


SALINE
1987
39
0
0
39
0
0


SEtfARB
1987
58
0
0
58
0
0


;STANTON
1987
10
0
0
10
0
0


THAYER
1987
23
0
0
23
0
0


:"THUaSTON
1987
4
0
0
4
0
0


lWilli»iSTON
19B7
13
0
0
13
0
0


mrm ; ¦ '
1987
16
0
0
16
0
0


* YORK
1987
27
0
0
27
0
0

TOTAL DISCRETE
WELIS/SAMPIES


1,435
0
1
1,435
0
1
0.02
Trifiur&lin
UHSPECinED
COUWTiES
Before
1989/1
948
0
0
948
0
0


80YD
1987
29
0
0
29
0
0


8UFFALO
Before
1989/1
1
0
1
1
0
1
0.042

BURT
1987
10
0
0
10
0
0


CEDAR
1987
12
0
0
12
0
0


COlfAK
1987
12
0
0
12
0
0


CIW5NG
1987
18
0
0
18
0
0


DAKOTA
1987
5
0
0
5
0
0


OAVJSOH
1987
38
0
0
38
0
0


OIXON
1987
5
0
0
5
0
0


dooge
1987
14
0
0
14
0
0


mu«ORE
1987
21
0
0
21
0
0


: A*A
1987
13
0
0
13
0
0


KNOX
1987
87
0
0
87
0
0


PIERCE
1987
15
0
0
15
0
0

7-NE-36
-------
PESTICIDE SAMPLING IN THE STATE OF NEBKASKA



WELL RESULTS
SAMPLE RESULTS
ftANGE OF
CONCEtl*
IRATIOKS
KST1CI8E
COUIiTf
OJU£
TOTAL
WELLS
SAMPLED
P Of
POSITIVE
WELLS
TOTAL:#,..
SAMPLES.!
t Of
POSITIVE
SAMPLES


YEAR/KOMI!

I;
MCI
<
MCL

a
XCL
*
NCt
(THfluralin)
POLK
1987
22
0
0
22
0
0


saline
198?
39
0
0
39
0
0


SEWARD
198?
58
0
0
58
0
0


STANTON
198?
10
0
0
10
0
0


THATER
1987
23
0
0
23
0
0


THURSTOK
1987
4
0
0
4
0
0


WASHINGTON
1987
13
0
0
13
0
0


WAWIE
1987
16
0
0
16
0
0


YORK
198?
2?
0
0
2?
0
0

TOTAL DISCRETE
WELLS/SAMPLES


1,440
0
1
1,440
0
1
0.042
GRAND TOTAL
DISCRETE
WELLS/SAMPLES


2,280
24
319 | 2,376
24
414

* Data reported from the atlas sirmary, Occurrence of Pesticides and Nitrate in Nebraska's
Ground Water, 1990, One sample per well is reported here because the rxnfcer of sanples
Mas not included in the atlas and was not available from the individual reports. If
concentrations for detections were available from the other reports, they «ere used;
otherwise, concentration ranges used in the atlas were reported.
B Concentrations in the 1990 report cited above were given as ranges for all samples
analyzed. Ranges and/or individual detection results were not given by county.
7-NE-37
-------
STATE OF NEBRASKA
iclls bt cournr
COURT*
tt?es of urns
SOURCE Of
CONTAWKATIOH
DRJ WtSWQ MA1ER
aojuToaiRG
ot#e*
" TOTAL'
:SKPU>'-
¦tr :'i
*Cl
<
net.
TOTAi
SKPID
a
HCL

TOTAI
/SMPLD
	>
Ma
¦<
wa
XfU'

UMC*
Adass
SB
0
5
0
0
0
0
0
0
3
0
2
Antelope
20
0
0
0
0
0
19
0
0
0
0
0
Blaine
26
0
0
0
0
0
0
0
0
0
0
0
Boone
27
0
0
5
0
1
0
0
0
0
0
1
Bo* Butte
2
0
0
0
0
0
8
0
1
0
0
1
Boyd
29
0
0
0
0
0
0
0
0
0
0
0
¦:Brawn
14
0
3
0
0
0
0
0
0
0
0
3
-"Buffalo
64
1
6
5
1
4
16
3
15
6
0
24
Suirt
12
0
0
0
0
0
5
0
0
0
0
0
Sutler
2
0
0
0
0
0
1
0
1
0
0
1
• Cedar
12
0
0
0
0
0
10
0
0
0
0
0
"these
35
0
2
0
0
0
5
0
0
0
0
2
Cherry
21
0
0
0
0
0
0
0
0
0
0
0
Cheyenne
0
0
0
12
1
8
0
0
0
0
0
9
Clay
43
0
9
0
0
0
0
0
0
5
0
4
Cotfax
12
0
1
0
0
0
10
0
4
1
0
4
cCcmtng
18
0
0
0
0
0
9
0
0
0
0
0
: €ui te-
35
0
1
0
0
0
0
0
0
1
a
0
Dakota
5
0
0
0
0
0
0
0
0
0
0
0
. Dawson ' "
93
0
18
0
0
0
5
1
4
18
0
5
Dixon
5
0
0
0
0
0
4
0
0
0
0
0
Dodge
14
0
0
0
0
0
21
1
9
0
0
10
Oindy
21
0
1
0
0
0
0
0
0
0
0
1
Fillmore
30
0
9
1
1
0
2
0
0
1
0
9
Franklin
14
0
1
0
0
0
0
0
0
1
0
0
frontier
12
0
1
0
0
0
0
0
0
1
0
0
;'Furnas i':':-
5
0
1
0
0
0
0
0
0
1
0
0
Gene
1
0
0
0
0
0
8
0
1
0
0
1
fist-field
12
0
0
7
0
1
9
0
3
0
0
4
Gosper
8
0
0
0
0
0
10
0
4
0
0
4
Greeley
14
0
1
0
0
0
0
0
0
1
0
0
Preceding page blank
-------
STATE OF iEUUSKA
l£LLS IT COUNTY
COUNTY
TTPES Of WEttS
souses Of
COKTAMJUAtlOU :
«WWB€it'Of:vWEtL$)
OR J M<[SJG WATER
ami rati m
OTKEB
TOTAL
SM°ID
>
'¦-¦mi-
¦¦¦¦•«'. *
¦MCi^
TOT At
; Sf*Pta
&k'-
v-#ct.::
<
TOTAi
:SMPL0
3
*a
<
Met-
»nj*

ua*
Hat I
45
z
12
8
0
7
14
1
is
7
0
28
«amtI tan
59
0
6
0
0
0
3
0
0
6
0
0
Harlan
16
0
2
0
0
0
0
0
0
0
0
2
Hayes
11
0
0
0
0
0
3
0
0
0
0
0
-Hitchcock
16
0
1
0
0
0
0
0
0
0
0
1
* Holt
119
1
3
0
0
0
49
0
14
3
1
14
:Hooker
9
0
0
0
0
0
0
0
0
0
0
0
Seward
16
0
2
0
0
0
0
0
0
0
0
2
vJiifferson
3
0
0
0
0
0
4
0
0
0
0
0
jbhnson
6
0
2
0
0
0
2
0
0
0
0
2
¦ Kearney
23
1
0
0
0
0
12
0
5
0
0
6
Keith 	
1
0
0
0
0
0
0
0
0
0
0
0
1 Key3 Paha
13
0
1
1
0
0
0
0
0
1
0
0
Knox.
87
0
1
0
0
0
10
0
0
1
0
0
Lancaster
59
1
2
0
0
0
5
0
1
0
0
4
Uncolr.
53
0
0
0
0
0
0
0
0
0
0
0
: to^sn
20
0
0
0
0
0
0
0
0
0
0
0
1 : LOUP
16
0
0
0
0
0
0
0
0
0
0
0
-Msdisofv
19
0
0
0
0
0
12
0
0
0
0
0
: NcPherso^
25
0
1
0
0
0
0
0
0
1
0
0
Merrick
24
1
10
0
0
0
18
2
15
8
0
20
Ner>ee
4
0
0
0
0
0
0
o*
0
0
0
0
Nemaha
5
0
1
0
0
0
1
0
0
0
0
1
-NuekisUs
16
0
11
0
0
0
6
4
2
0
0
17
:Pawnee
11
0
3
0
0
0
5
0
1
0
0
4
Perkins
31
0
0
0
0
0
0
0
0
0
0
0
¦Phelps
22
1
2
0
0
a
10
0
10
2
1
10
Pierce
15
0
0
0
0
0
7
0
0
0
0
0
PUtte
34
0
1
0
0
0
2
0
0
0
0
1

24
0
7
0
0
0
2
0
0
7
0
0
. fted Wil low
13
0
0
0
0
0
0
0
0
0
0
0
7-NE-40
-------
STATE OF NEBRASKA
HELLS BT COUNTY
COURT?
rrpes of wells
SOCAGE Of
CCWTAMIMATfON
{NUMBER Of WEILS}
DRINKING WATER
HONI TOR]KG
OTHER
TOTAL
SHPLC
2
MCL
<
net
TOT At
SW>U5
S
KCL
-«
#CL
TOTAL
SWUt
i -
MCI
•<
MCL
uw'
n
uwc*
BieKardson
17
0
6
0
0
0
4
0
2
0
0
8
Sock
18
0
0
0
0
0
10
0
1
0
0
1
Saiir»
39
0
4
0
0
0
5
0
0
3
0
1
Saunders
0
0
0
0
0
0
4
0
3
0
0
3
..;Seatts
-¦ Bluff
43
0
1
0
0
0
0
0
0
1
0
0
-:Sward
58
0
7
0
0
0
3
0
1
7
0
1
Shirmwv 	
15
0
0
0
0
0
0
0
0
0
0
0
Stanton
10
0
1
0
0
0
6
0
0
1
0
0
' Thayer ¦•¦¦¦¦¦ ¦
33
0
a
0
0
0
0
0
0
1
0
7
:: ffvxnas
27
0
0
0
0
0
0
0
0
0
0
0
Thurston
4
0
0
0
0
0
1
0
0
0
0
0
: Val ley
15
0
0
0
0
0
0
0
0
0
0
0
^Washington
13
0
i
0
0
0
0
0
0
1
0
0
Wayne
17
0
i
0
0
0
5
0
0
1
0
0
Webster:
9
0
2
0
0
0
0
0
0
0
0
2
Wfreeler
12
0
1
31
1
15
13
0
3
16
0
4
York
35
0
9
0
0
0
6
0
2
6
0
5
¦-TOTAL-H";
1,846
8
168
70
4
36
364
12
115
112
2
229
NFU-Knoan or Suspected Normal Field Use
PS *Known or Suspected Point Source
UNK-Unkrvown
7-NE-41
-------
Pesticides in Ground Water Database -1992 Report
APPENDIX I - PESTICIDE CROSS-REFERENCE TABLE
-------
PESTICIDE CROSS-REFERENCE TABLE
CHEMICAL NAME
JttFERfKCE.
m.
wn
Lit*
<«/U
PESTICIDE
CATEGORY
REGULATORY
STATUS
t-Wapftthol



Insecticide
C
1,2,4* Trfchl orobertzerw

9
9
Herbicide
u.c
1,2-D
1, 2*01 cfilorapropane




1^2-OfeMoroethane

5

Furdgant
s
1,2-01 ch I ofopropane

5

Funlgant
c
1,3-D
lUchloroproperw




1,3-Dichloropropene
tMcfctoropropene




2-Chloroallyl-
diethyldi thiocarbamate
CPEC




2(2,4-Dichloropherwxy)
propionic acid
OfcMorprop




2(2,4-DP)Diethylamtne salt
{H cfileroprop




2,-4-0

70

Herbicide
S.S*Pre
2,4-58



Herbicide
S,SRPre
?,4-01chloroberuofc sctd



Possible
degradate or
iirpurity

2,4-Dichlorophenoxyaceti c
acid
2,4-0




2,4-fiimtrophenol



Acaricide
insecticide
U.C
2,4-DP
Of ch lew-prep




M.5 T

TO

Herbicide
C,SRC
2,4,5-Trichlorophenoxy-
acetic acid
2,4,5-f




2,4,5-TP

50

Herbicide
C,SRC
2,4,6-1richtorophenoI
-THcMorojtfenoi




2,6-diethytanfline
Alachlor


Degradate

5- Hydroxytarbof urar>
Carbofuran


Degradate

3-Ketocafbofuran t
3-Ketocerbofuran (phenol)
Carbofuran


Degradate

3,5-Ofctilorobcnjoic acid ¦
Pronamide


Degradate

4-Kitrojstverot
Parathion, methyl

60
Degradate
Fungicide
s
4{2,4-Dichlorophenoxy)
butyric acid
2,4-08




4(2,4-08), Butoxyethanol
ester
2,4-OB




APPENDIX 1-1
-------
PESTICIDE CROSS-REFERENCE TABLE
CKEHtCJU. «AME
*£FE*£HCE
HCt
U9/t>
l«A
4*8/D
PESTICIDE
CATElSOft*
REGULATORY
STATUS
4(2,4-DB), Dinethylaniine
sale
2,**W




: f - Hydroxy # awtM
Dicantia


Degradate

Acenaphtfar*



Insecticide
Fingicide
S
Acephat*



Insecticide
S
*eifluorfen



Herbicide
s
Acrotem'



Fungicide
Herbicide
Antimicrobial
S,R
AerylfinitrSte



Fimigant
C.R,SRC
Al&cMor

2

Herbicide
S,R,SRP
Atdiearb

3
1
Insecticide
Acaricide
Fungicide
Nematicide
S,R,SRP
Atdieart» Sutfone
Aldicarb
2
1
Degradate

Aldi earbSut fa*id«
Aldicarb
6
1
Degradate

Aldltarfr, Total
Aldicarb
3

Parent ~
degradates
SRP
Atdrtn



Insecticide
C,SRC
Ametryn

60
60
Herbicide
S
Aminocarb



Insecticide
u.c
Amitr«z



Insecticide
Acaricide
S,R,SRC
:Amitrole



Herbicide
S,RP
Amtazine



Fungicide
S


50



Arsenates, Arsenates
Arsenic,


Insecticide
Fungicide
Herbicide
If
Arsenic acid
Arsenicals
AraenJc


Defoliant
Insecticide
s<|
srk
Atriton
experimental
discontinued triaxine


Herbicide
c
Atraiine

3

Herbicide
S,R
Atraiine, deatkylated
Atrazine


Degradate

Aiinphos-ethyl



Insecticide
c
Azthphos-methyl



Insecticide
S,R
Banvet
Dic&oibe




APPENDIX 1-2
-------
PESTICIDE CROSS-REFERENCE TABLE
OtEHlCAt NAM? -
*£FER£#Ct
HCt
U*
<«/l>
PESTICIDE
category
REGULATORY
STATUS
larbort



Herbicide
C
Baygon
Propftxur




Senrffoearb



Insecticide
S,R

Bentluralln


Insecticide
Herbicide
S
Benflural iri
iftenefin




Be nosy I



Fungicide
S,SRC
BerwuHde



Herbicide
s
; Hent&zon

20
20
Herbicide
s
Bentozon, sodium sstt
Bentaion


Oegradate

BMC {«,MJ



Insecticide
C,SRC
BHC cr>
lindane





Bromecft


90
Herbicide
s
Bromide
Sod)iin bromide




: Bfomoxyrvil



Herbicide
s
Bufencarb



Insecticide
c
Butaefi l or



Herbicide
c
Butylate


350
Herbicide
s
Captafol



Fungicide
c
Captan



Fungicide
S,SRC
Csrbaryl


roo
Insecticide
s
Carberxiaziia



Fungicide
c
CBrbofurdn

40
40
Insecticide
Acaracide
Fungicide
Nematicide
S,R,SRC
Carbofuren phenol
Carbofuran


Degradate

Carbofuran, total
Carbofuran


Parent ~
degradates
SRC
Carbon disulfide



Funigant
Fungicide
U
Carbon tetrachloride

5

Fire retardant
in fmigant
formulations
SRC
CerbopfcenotMan



Insecticide
Acaricide
C
CarbapherwttBon, methyl



Insecticide
Acaricide
u
APPENDIX 1-3
-------
PESTICIDE CROSS-REFERENCE TABLE
CHEHJCAl
SEPEffEHCS
HCt
t * 9/1 >
IHA
-------
PESTICIDE CROSS-REFERENCE TABLE
CHEXTOU. UAME
6£FElt£tttE
*a
iv& 1>
l«A
<«/U
fESTICIDt
CATEGORY
REGULATORY
STATUS
tywude

200
200


Cyanide, calcium or
potassI in
Cyanaide


Rodenticide
U
Cyanaide, sodium
Cyanide


Rodenticide
S,R
Cyctoate



Herbicide
S
Cype wnethHn



Insecticide
S,R
CyprJMtine



Herbicide
C
Dacthal
OCP*




Dacthal diacid
CCPA acid metabolites




$alepon

200
200
Herbicide
u,c
DBCP

0,2

fumigant
C,R,SRC
DCBA
2,4-Oichloroberuoic
acid




DCP
1,2-DiclUor-oproparte




OCPA


4000
Herbicide
S
OCPA acid Metabolites
DCPA


Degradate

D-D Nix
1,2-Cicfcloropropane
and fiicMoropropen®




DOT



Insecticide
c
CDS
ODT


Degradate
SRC
ODE
DOT


Degradate

DO VP
Dichlorvos




OEF
Tribuft>s


Insecticide
Acaricide
C.R
fietneton



Insecticide
Acaricide
c
Deswton matbyl



Insecticide
Acaricide
c
Ee*ieton-S



Degradate

Oemeton-S sutfone -
Oemeton-S


Degradate

Ses-ethyl atr«iin»
At ran'ft#


Degradate

Oes" isopropy I ¦ atrazine r--.
Atrazine


Herbicide
C,R
Si at late



Herbicide
C,R,SRC
Olezlrwrt


0.6
Insecticide
Fungicide
Nematicide
S,SRC
Dibromochtoropropane
OBCP




APPENDIX 1-5
-------
PESTICIDE CROSS-REFERENCE TABLE
CWELMlMl NAME
*£F€IKHCE
MCI
US/O
IMA.-..-
PESTICIDE .
CATEGORY
REGULATORY
STATUS
tMbutyl



Insect
repelIant
U,C
Dichlor<5propene



Nematicide
Fumigant
S,M*P
Bfchlorprop



Herbicide
S,SRPpe
Dichlorprop, butoxyethanol
ester
Oiclilorprop




dchtorvos



Insecticide
P
s(sr
fiico/ot



Insecticide
Acaricide
S,SRC
01crotophos



Insecticide
M
Oietdrin



Insecticide
C,SRC
Diethylhexyl phthalate
dfoctyl phthaiat#




8 vmetJiaate



Insecticide
Acaricide
S,SRC
ainosch

7
7
Herbicide
C,SRC
Dinitrocresol
WiOC




fcioctyl phthalate



Acaricide
C
Oioxaearb




C
:0!exathfoo



Insecticide
C,R
Cipher amtd


200
Herbicide
C
.Oiquet

20
20
Herbicide
s
Diquat dibromide and
various salts





Oisulfoton


0.3
Insecticide
Acaricide
s,u
01 su I foton sul for*
Oisulfoton


Degradate

¦Ol&ulfotof) sulfoxide
Disulfoton


Degradate

01UPOf>


10
Herbicide
5
: OMPA



Fly larvicide
c
APPENDIX 1-6
-------
PESTICIDE CROSS-REFERENCE TABLE
CHEMICAL NAME
fi£F£lt£K£E
#a
(w/n
LHA
PESTlClM:
CATEGCST
WGUtATORY
STATUS
wx



Insecticide
Herbicide
Fungicide
Antimicrobial
U,C
DNOC, Godiun salt
6W0C




EDB
ethylene tfibrttsi-de




EBOC canpouxis
Jlaneb, Nancoteb,
Jtineb



SRC
fndosul fan



Filicide
Antimicrobial
S
fndo&ulfan I
Endosulfan


Isomer

Endosulfan !J
Endosulfan


Isomer

Endosulfan sulfate
Endosulfan


Pegradate

EndothaiI

100
100
Herbicide
s
Endrifr

2
2
Insecticide
U,C,R,SRC
Endrin aldehyde
Endrin


Pegradate

£PK



Insecticide
Acaricide
C,R
EPTC



Herbicide
S
Ethalf IwaUh



Herbicide
S,SRC
Ethion



insecticide
Acaricide
S,R
Ethoprop



Insecticide
Fungicide
Nematicide
S,K
Ethyl atcohol



Disinfectant
S
EthyCan



Insecticide
U,C,SRC
Ethylene
bisdithiocarbarnate
conpounds
¦ Haneb, Hancoieb,
Zlneb




'' Ethylene7dibiMSMfdi

0.05

Insecticide
C,R,SRC
Ethylene dichloride
:-ii2-0lchic«>ethitne::7'




Ethylene thiourea
ETU




Ethyl parathion
Rarathion, ethyl




Ein'-di azote



Fungicide
s
tiy
Maneb


Degradate

Fersac
Ghitorf enac- •




Fcianiphos


2
Insecticide
Fungicide
Nematicide
S,R
APPENDIX 1-7
-------
PESTICIDE CROSS-REFERENCE TABLE
CHEXICAt VAMt
R£FER£«CE
Ha
(W/O
LM
PESTICIDE
CATEGORT
REGULATORY
STATUS
f«nw>ri phos sutforw
Fenamiphos


Degradate

Fenami phos sulfoxide
Fenamiphos


Degradate

:-N«»rS«oi • -



Fungicide
S




Insecticide
Acaricide
s
FtnsulfotlifOrt



Insecticide
Fungicide
Nematicide
C,R
Fenthfoft



Insecticide
c
F«nui*on "



Herbicide
c
Fenvalarste



Insecticide
S,R
Ftusii fop-butyl



Herbicide
s
FtucMoral in



Herbicide
s
Flunetralln



Herbicide
s
f (uoBieturon


90
Herbicide
s
fluridone



Aquatic
herbicide
s
fonofas


10
Insecticide
S,R
formatdehyde


1000
Fungicide
Antimicrobial
u
Gtyphosate

700
700
Herbicide
s
Glyphosate isopropylamine
salt
filyphosate




Guthion
Arinphos-roethyl




HCM (a,6,<5)
BHC 




HCH 
-------
PESTICIDE CROSS-REFERENCE TABLE
CHEXICAt KAME
K£FER£MCE.
m.
tKA
-------
PESTICIDE CROSS-REFERENCE TABLE
CHEMICAL MAKE
REFERS#*
net
<(*«/!>
: l«*
iwt D
PEStlCl!*
CATEGOSt
REGULATORY
STATUS
HethyI parathion
frarathion, methyl




Nethyl trithior
Carbophenoris jon,
methyl




Methylene chloride



Insecticide
U
Xetoiacfilor


100
Herbicide
s
HetribUilh


200
Insecticide
s
«etrlbo2ih DA
Hetribuiiri


Oegradate

#etrlbozin OMSK
Metribulin


Degradate

~tetrlbutfrv OK
Net ri buz in


Oegradate

*«v1nphos



Insecticide
Acaricide
S,R
Xexscartaate



Insecticide
u,c
Mi rex



Insecticide
C,SRC




Herbicide
s
KoHnete sulfoxide
Molinate


Oegradate

JtooocretopiKis



Insecticide
Acaricide
c,r
Monuron



Herbicide
C,SRC
Waled



Insecticide
Acaricide
s
Naphthalene


20
Insecticide
s
Hapropomida



Insecticide
s
Neptstam



Herbicide
s
Neburori



Herbicide
c
Memagon
OB CP




:R!trefen



Herbicide
c
p-Mitrophenol
4*Mitroph«nol




Korvachlor
Chlordar>«


Impurity in
formulation

Hofflwratoft



Herbicide
s
Octyl bicycfohept^ne-
dicarboxiraide



Insecticide
Fungicide
Antimicrobial
s
Ortho-dichlorobeniene
o &5 chlort>b«nt«>e




Oryralin



Herbicide
s
Ovex
CMorfenssn




APPENDIX 1-10
-------
PESTICIDE CROSS-REFERENCE TABLE
OiEKlCAt UAMET

#Ci
<*9/1)
IHA
PESTICIDS
CATEGORY
MORATORY
STATUS
Oxtnyl

200

Insecticide
Acaricfde
Fungicide
Nematicide
S,R
Gxychtonton*
CMordane


Animal
metaboli te

Oxyderaeton-wethyl



Insecticide
Acariclde
S,R,SRP
Cxydteutfaton



Insecticide
Acariclde
C
Oxyfluorfen



Herbicide
S,SRC
Para-chlorowetacresol
p-Cfc loro-m-cre&ot




para-Oichtorobenzene see
p-Dichlorobenzene, listed
at di chlorobenzene
p-CJUoro-o-cre&ol




Paraquat


30
Herbicide
S,R
Paraquat dichtoride
Paraquat




Parathi on
Paretht-on, ethyl




: P-arathton, ethyl



Insecticide
S,R,SRC
P«r#th?on, methyl

2

Insecticide
S,R
: PCK3



Fungicide
S,SRC
PCP
P«ritB«hioroph
-------
PESTICIDE CROSS-REFERENCE TABLE
CK&XICAL tUME
*£F£Kf«CE
ML
tHA
-------
PESTICIDE CROSS-REFERENCE TABLE
J CHEMICAL
REFERENCE
Ma
L«A

PESTICIDE
CATEGORY
MGUUTOfiY
SfATOS
| Sifflctone



Herbicide
NR
1 SJaserryn



Herbicide
NR
Sodiui braaide
Bromide


Insecticide
fungicide
Herbicide
Antimicrobial
S
Sodiun cyanide
Cyanide




Sulprofos



Insecticide
S,R




Herbicide
C
TCA arid salts
JnitKloraacetic »eid




TCE
1 richioroethene




tcbuthiis-oo


500
Herbicide
s
Tclorw
"tHcftiaropropehe- .¦*.¦*.¦*..¦ ¦




. Terfaac f I


90
Herbicide
s
Terbufo4


0.9
Insecticide
Fungicide
Hematicide
S,R
T»rbufos sulforw
Terbufos


Oegradate

Terbuthylazirw



Herbicide
Algaecide
S
Terbutryn



Herbicide
C
Terratole
Stridiaiofe




Tet racht oroethyt

5

Funi gant
C
Tetr&chtorvinphoS



Insecticide
s
t«radffon




u.c
Thanft*
Uoboryt
tniecysnoacwat*




Thiobencarb



Herbicide
s
:Thiobencarb sulfoxide



Degradate

fhiophanate



Fungicide
c
Thiophanate*aethy{



Insecticide
Fungicide
S,SRC
Tordon
Picloram




toxapfiene

3

Insecticide
U#R,SRC
Tratomethrin



Insecticide
8.R
Trans-iwwch lor
chlordane


Impurity in
formulation

Triadimefort



Fungicide
s
APPENDIX 1-13
-------
r*r*f"TTr»Tr\r' /^n /\rr fiT*? i'"*!1"*!"*	nr a tit
PESTICIDE CROSS-REFERENCE TABLE
CHEMICAL NAME
*£FER£KC{1.
Kl
<¦»/!>
L*A
PESTICIDE
CATEGORY
REGULATORY
STATU*
1 r tbufos



Herbicide
S
Trfcklorfoft



Insecticide
s
trichloroacetic kcfd



Herbicide
u
Tr i ch I orobemene
: 1.2,4-
Trlchlorobe*w«ne




TricMoroethUrte





Trichioroethylene
:'TrfthlOroethene '
5

Funigant
c
Trichf oror»at(e)



Insecticide
c
Trichtorophen&l



Fuigicide
Herbicide
Antimicrobial
u,c
Triehlorophon
IrichJorfon




Triclopyr



Insecticide
Herbicide
s
TricycUzole



Fungicide
NR
:Vrif turalin


5
Herbicide
S,Sfi,C
Trithion
Carbophenothion




Tunic
ffethezote




liracf 1 /Urea



Antimicrobial
U
Verr>otate



Herbicide
s
Vortex
t.Z-Oirfitoropropane,
Diehtoropropene;
vMethyl 1swthi»cy»nate




Xylene

10000
10000
Insecticide
Fungicide
Herbicide
, Antimicrobial
u
iineb



Insecticide
Fungicide
c
Ziraffi



Insecticide
Fungicide
u
pr*
SR Presently in Pre-Special Review
p
SR Special Review in progress
SR Special Review completed
S Supported: The producers J of the pesticide has made commitments to conduct
the studies and pay the fees required for reregistrati on, and is meeting
those conrnitments in a timely manner.
APPENDIX 1-14
-------
PESTICIDE CROSS-REFERENCE TABLE
U Unsupported: The producertsj of the pesticide has not made or honored s
commitment to seek registration, conduct the necessary studies, or pay
the requisite fees for ^registration of the product.
C Canceled: The active ingredient is no longer contained In any registered
pesticide products.
R Restricted Use: The pesticide has been classified as a Restricted Use
Pesticide i**3er 40 CFR Part 1, Subpart 1. It is therefore restricted to
use by a certified applicator, or by or under the direct sipervision of a
certified applicator.
* In Hawaii both dichloropropane and 1,2-dichloropropar>e appear in the data.
APPENDIX 1-15
-------
Pesticides in Ground Water Database • 1992 Report
APPENDIX II - NATIONAL SURVEY OF PESTICIDES IN DRINKING
WATER WELLS
-------
IN .DRIZSTKING'-WAXHR WELLS
At this time the Pesticides in Ground Water Database does not contain data from the
National Survey of Pesticides in Drinking Water Wells (NPS). These data have been recently
analyzed and published.3 OPP is currently working on importing the results of the pesticide
analyses, so that they will be available when the PGWDB becomes part of the Pesticide
Information Network, The following is a short description of the NPS and a summary of
findings from the NPS.
The NPS is a joint project of EPA's Office of Drinking Water and Office of Pesticide
Programs. This survey is the first national study of pesticides, pesticide degradates and nitrate
in drinking water wells. The Survey has two principal objectives: 1) to determine the frequency
and concentration of pesticides and nitrate in drinking water wells nationally; and 2) to improve
EPA's understanding of how the presence of pesticides and nitrate in drinking water wells is
associated with patterns of pesticide use and the vulnerability of ground water to contamination.
The focus of the Survey was on the quality of drinking water in wells, rather than on the quality
of ground water, surface water or drinking water at the tap. The Survey was designed to yield
valuable information on both the frequency and levels of pesticides, pesticide degradates and
nitrate in rural domestic (private) and community (public) drinking water wells on a nationwide
basis. The Survey was not designed to provide an assessment of pesticide contamination in
drinking water wells at the local, county or State level.
More than 1300 wells were sampled, some in each State, for 127 analytes. Nitrate was the
most commonly detected analyte in these wells. Based upon the NPS results EPA estimates that
nitrate is present at or above the analytical minimum reporting limit of 0.15ug/Lin about 52.1%
or community wells, and 57% of rural wells nationwide.
The survey detected pesticides and pesticide degradates much less frequently than nitrate.
Twelve of the 126 pesticides and degradates were found in the sampled wells. EPA estimates
that 10.4% of community wells and 4.2% of rural domestic wells in the United States contain
pesticides or pesticide degradates at or above the analytical minimum reporting limit. The two
most commonly found pesticides were DCPA acid metabolites (degradate of dimethyl
tetrachloroterphthalate) and atrazine. The following is a list of the pesticides found in each type
of well.
Community:	atrazine, DCPA acid metabolites, dibromochloropropane, dinoseb,
hexachlorobenzene, prometon, simazine.
Rural Domestic: alachlor, atrazine, bentazon, DCPA acid metabolites,
dibromochloropropane, ethylene dibromide, ethylene thiourea, gamma-
HCH (lindane), prometon, simazine.
Appendix II-l
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