-^- " ^t^
MmM WATER POLLUTION CONTROL RESEARCH SERIES 16050 EYT 06/71
Pesticide Inputs and Levels
Minnesota Waters-Lake
Superior Basin
U.S. ENVIRONMENTAL PROTECTION AGENCY
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WATER POLLUTION CONTROL RESEARCH SERIES
The Water Pollution Control Research Series describes the
results and progress in the control and abatement of pollution
in our Nation's waters. They provide a central source of
information on the research, development and demonstration
activities in the Environmental Protection Agency, through
inhouse research and grants and contracts with Federal,
State, and local agencies, research institutions, and
industrial organizations.
Inquiries pertaining to Water Pollution Control Research
Reports should be directed to.-, the Chief, Publications Branch
(Water), Research Information Division, R&M, Environmental
Protection Agency, Washington, D.C. 20460.
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PESTICIDE INPUTS AND LEVELS
MINNESOTA WATERS - LAKE SUPERIOR BASIN
by
Minnesota Pollution Control Agency
717 Delaware St. South East
Minneapolis, Minnesota
55440
for the
ENVIRONMENTAL PROTECTION AGENCY
Program #16050 EYT
June, 1971
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EPA Review Notice
This report has been reviewed by the Water Quality Office,
EPA, and approved for publication. Approval does not sig-
nify that the contents necessarily reflect the views and
policies of the Environmental Protection Agency, nor does
mention of trade names or commercial products constitute
endorsement or recommendation for use.
Fin- sale by the Superintendent of Documents, U.S. Government Printing Ollicc, Washington, D.C. 20402 - Price $1.00
11
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ABSTRACT
Field and laboratory studies were conducted to determine whether North
Shore streams in the Minnesota drainage basin of Lake Superior were
important as contributors of insecticides. Samples were collected and
analyzed from selected streams, the Grand Mara is and Duluth Pumping
Stations, and the Duluth sewage treatment plant. Clams were exposed
for bioassay purposes in 22 streams.
Under conditions of normal flow, very little insecticide contamination
was being contributed to Lake Superior by these streams. Highest values
occurred in samples from the Lester and Lower St. Louis Pavers and in
sewage effluent. In October, following heavy runoff, PP1 DDT reached
concentrations of 20-21.8 ppb. Ordinarily, median levels in these riv-
ers were 0.03 and 0.02 ppb, respectively. Medians in all other streams
were less than 0.01 ppb. Almost invariably PP'DDT was present in great-
er concentrations than its OP* isomer or DDE.
In the clam studies PP'DDT values exceeded the median in four streams
only. Native clams from the St. Louis Polver, with a resident time of
5-11 years, had accumulated appreciable concentrations of PP'DDT. Val-
ues ranged from 93 to 1630 ppb.
On this basis, it was recommended that the St. Louis River be monitored
at reasonable intervals.
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CONTENTS
Section Page
I Conclusions ' ]_
II Recommendations 3
III Introduction 5
IV Selection of Sampling Sites 7
V Laboratory Procedure for Uater Samples ]_]_
VI Laboratory Procedure for Clam Samples ^3
VII Gas Chromatography Analysis ]_5
VIII Results - Water ]_y
IX Results - Clams . 19
X Acknowledgements 21
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FIGURES
PAGE
1 SAMPLING SITES - NEMADJI RIVER TO FRENCH RIVER ......... 23
2 SAMPLING SITES - FRENCH RIVER TO BAPTISM RIVER 25
3 SAMPLING SITES - MANITOU RIVER TO CASCADE RIVER 27
4 SAMPLING SITES - DEVIL TRACK RIVER TO PIGEON RIVER ..... 29
5 TYPE OF BASKET USED IN BIOASSAY STUDIES .. ..... 31
6 NORTH SHORE STREAMS - THE TEMPERANCE RIVER 31
7 NORTH SHORE STREAMS - THE CASCADE RIVER 33
8 NORTH SHORE STREAMS - THE SPLIT ROCK RIVER 0,0,
VI
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TABLES
No. Page
1 Water Analysts - Pigeon River 35
2 Water Analysis - Brule River 36
3 Water Analysis - Baptism River 37
4 Water Analysis - Grand Mara is Pumping Station 33
5 Water Analysis - Beaver River . 33
6 Water Analysis - Knife River 40
7 Water Analysis - Duluth Pumping Station 41
8 Water Analysis - Lester River 42
9 Water Analysis - Upper St. Louis River ............ 43
10 Water Analysis - Lower St. Louis River 44
11 Effluent Analysis - Duluth Sewage Plant 45
12 Water Analysis - Upper Nemadji River 45
13 Water Analysis - Lower Nemadji River 47
14 Summary of Field Operations - Clams , 43
15 Experimental Clam Results - Pigeon River 50
16 Experimental Clam Results - Reservation River 52
17 Experimental Clam Results - Brule River 54
18 Experimental Clam Results - Devil Track River .....5(5
19 Experimental Clam Results - Cascade River 57
20 Experimental Clam Results - Poplar River 59
21 Experimental Clam Results - Temperance River 50
22 Experimental Clam Results - Manitou River ฃ]_
23 Experimental Clam Results - Baptism River 53
vii
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TABLES (Continued)
No. Pag
24 Experimental Clam Results - Beaver Paver ฐ5
25 Experimental Clan Results - Split Rock River 67
26 Experimental Clam Results - Gooseberry River 69
27 Experimental Clam Results - Encampment River 70
2G Experimental Clam Results - Stewart River 71
29 Experimental Clam Results - Knife River 72
30 Experimental Clam Results - Big Sucker 74
31 Experimental Clan-, Results - Schmidt Creek 77
32 Experimental Clam Results - French River 79
33 Experimental Clam Results - Talmadge River 31
34 Experimental Clam Results - Lester River 83
35 Experimental Clam Results - Upper St. Louis Paver ... 85
36 Experimental Clam Results - Lower St, Louis River ... 87
37 Experimental Clam Results - Upper Nemadji River ..... 83
38 Experimental Clam Results - Lower Wemadji River 39
39 Control Clara Results - Mississippi River 91
40 Native Clam Results - Upper St. Louis River 95
41 Summary of Age, Weight and Species - Clams 97
42 Median Values of Pesticides in Claras 10
VL1L
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SECTION I
CONCLUSIONS
1. Very little pesticide in terms of DDE and OP'or PP'DDT is current-
ly being added to Lake Superior by North Shore streams.
2. On the basis of clam studies, there is evidence that the St. Louis
River is contributing such pesticides in small amounts.
3. Clam bioassays also indicate, although not as clearly, that the
Beaver and Brule Rivers may at certain times carry small amounts of
pesticide.
4. In the St. Louis River, water sampling results support the findings
made in a study of exposed and native darns,
5. In other streams such as the Nemadji, Lester, Brule, Knife and
Beaver Rivers results indicate that one may expect small pesticide
contributions on an intermittent basis, especially following runoffs
produced by heavy rains.
6. Another potential source of insecticides on an intermittent basis
is the Duluth Sewage Treatment Plant effluent.
7. Looking to the future, if in the drainage area which has been under
study pesticide use is kept at or below its present level, there need
be no great concern relative to the amounts of chlorinated hydrocarbons
such as PP' and OP' isorners of DDT and DDE being carried into Lake Super1
ior by North Shore streams.
3. In the St. Louis River, however, based on the findings obtained in
clam studies as well as by water examination, one cannot ignore the fact
that chlorinated hydrocarbons have been found in appreciable amounts.
It is suggested that this stream should be routinely monitored, at
reasonable intervals.
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SECTION II
RECOMMENDATIONS
This study was based on field observations and laboratory analyses to
detect the concentration of certain chlorinated hydrocarbons in water
from and in clams exposed to waters of selected streams tributary to
Lake Superior from its Minnesota drainage basin. No consistently high
levels of chlorinated hydrocarbons were recovered from these waters
or from clams exposed in the streams. Only one stream, the St. Louis
River, could be pointed to as carrying an appreciable load of the DDT
isomsrs or DDE on either an intermittent high level or a constant low
level basis.
It is recommended that the St. Louis River be monitored at reasonable
intervals including periods of high as well as low run-off.
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SECTION III
INTRODUCTION
By providing the means whereby the vectors of human disease may be con-
trolled and whereby the necessary crops and food calories may be pro-
vided for our ever increasing population, the "persistent insecticides"
have conferred tremendous benefits on mankind. Our society therefore
owes a debt to these agents. However, as we look into the future we
soon realize that this happy association has a number of unfortunate
aspects, which in the early use of these insecticides was not immediate-
ly or fully appreciated. For example, the persistent quality which
made these agents especially good for insect control is often a distinct
disadvantage since the poison, after destroying the pest, remains to en-
danger man himself. In addition, the development of resistance to the
pesticides by the target insect and the excessive broadness of the le-
thal effects which characterize these agents and extend their toxicity
to beneficial insects and other useful organisms, are factors which
seriously limit their usefulness. Thus while our needs for insecticides
and other pest control chemicals will continue to increase, if we are to
feed and clothe our world population, there is evidence that we must be-
come extremely concerned about the unintentional effects of pesticides
on human health and on various life forms important to the survival of
man.
In December 1965, when the U.S. Department of Health Education and Wel-
fare published a voluminous 677 page document entitled "Report of the
Secretary's Commission on Pesticides and their Relationship to Environ-
mental Health", it effectively recognized and pointed out to the Ameri-
can public the importance of pesticides to the welfare and well-being
of man. This report included references to some 5,000 published art-
icles or ongoing scientific research projects dealing with pesticides
which had been reviewed and evaluated by the commission and which had
been used as a basis for their recommendations. In a partial summation
they stated: "After carefully reviewing all available information, the
Commission has concluded that there is adequate evidence conerning po-
tential hazards to our environment and to man's health to require cor-
rective action. Our nation cannot afford to wait until the last piece
of evidence has been submitted on the many issues related to pesticide
usage. We must consider our present course of action in terms of future
generations of Americans and the environment that they will live in."
In the above report there were also included certain special Advisory
Panel Reports on carcinogenesis, interaction, mutagenesis and terato-
genesis. In connection with these and as an over all statement relative
to their general philosophy the commission further stated; "We must
consider the total problem of pesticide usage not only in the context
of what is presently known but also in the context of the many unknowns
still to be determined. Corrective action is recommended now to prevent
further environmental contamination from pesticide residues and to pro-
tect the health of man."
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in die month of April 1969, the month xjhich D.H.E.W.'s Secretary Finch
appointed his commission on pesticides and environmental health, the
upper Great Lakes Governor's Conference on Pesticides stated that it was
their wish that the recommendations of the Lake Michigan Enforcement
Conference be immediately and fully implemented. It was further recom-
mended by that conference that the studies on pesticides be expanded
to include the Minnesota and Wisconsin drainage basins of Lake Superior
and to the Michigan drainage basin of Lakes Superior and Huron. Like
the secretary's commission the Governors uere greatly concerned over
the possible hazards presented by increasing residual pesticides in
the environment generally and they were especially concerned over the
possibility that in the Upper Great Lakes these pesticides might be
reaching levels which could be considered a threat to the health and
well-being of the people of their respective states. As a consequence
a further recommendation of their conference report was that a monitor-
ing program be initiated and that special studies be made to provide
current information on pesticide levels and pesticide contamination
within the aquatic ecosystems of the lakes, especially Lake Michigan.
The Minnesota study reported here represents one of the phases of this
undertaking as it was carried out along the North Shore of Lake Superior.
As indicated by its title, the latter study has been limited to Minne-
sota waters and to the tributary streams of the Minnesota drainage
basin of Lake Superior along its north shore. Briefly stated, the study
has been concerned with monthly observations on pesticide levels of wa-
ters from 12 key points between the Canadian border and Duluth, with
observations on pesticide levels in sewage effluents in the Duluth area
and with a biological assay type of study in which the pesticide levels
of exposed "captive" clams and native clams have been determined. In
the latter study mature clams from an outside source were exposed for
varying lengths of time in some 20 North Shore streams and in the St.
Louis and Nemadji Rivers. Collections of the exposed clams x.jere made
at intervals of two weeks in such a way that some specimens were ex-
posed for the entire period of the study, June to December inclusive.
The final collections were made during a snowstorm, December llth,
just before the complete "freeze-up" of the North Shore streams occurr-
ed. Clams were used in this biological study because they are plank-
ton and detritus feeders and are demonstrated concentrators of many
toxic substances in water, including chlorinated hydrocarbons. On this
basis they should reveal the presence of DDT and related compounds in
amounts below detection by ordinary analytical procedures such as thin
layer and gas chromatography.
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ECTION IV
Prior to any activity in connection with the field aspect of the study
dealing with pesticide inputs and levels in Minnesota waters of the Lake
Superior basin, all major rivers along the North Shore of the lake were
visited to determine satisfactory sampling sites. These observations
regarding suitability were also extended to the St. -Louis and Nemadji
Rivers. While it xjould have been preferable to have located all sites
as near to the mouths of the rivers as possible, this was not always
feasible for a variety of reasons such as inaccessibility to the stream
because of precipitous rocky banks, that the area was too exposed to
casual tourist traffic, or that it was too close to adjacent private
homes. It was also necessary, in locating sites for clam exposure, to
anticipate fluctuations in the water level so that the clams would not
be exposed when the level of the streams dropped. Consequently, the
sites which were finally selected were, for the most part, some distance
upstream in order to reduce the possibility of vandalism. Following is
a listing of the rivers used in the study together with a brief descrip-
tion of the sites where water samples were taken and where the clams
were held (See Figs. 1 - C).
Pigeon River 200 yards below the old port of entry
into Canada
Reservation River 200 feet upstream from the bridge on
Highway 61
Brule (Arrowhead) River just below the Magney Memorial
Devil Track River 2 miles upstream, just above the point
of crossing of the Gunflint Trail
Cascade River One mile upstream from Highway 61
Poplar River 1/3 mile upstream from Highway Gl
Temperance River 6 miles upstream from Highway 61 and
off the Sawbill Trail
Baptism River three miles up State Highway 1
Beaver River 1/G mile above Highway 61, just off
a spur of State Highway 4
rlanitou. River approximately 400 feet above the
bridge on Highway 61
Split Rock River approximately 400 feet above the
bridge on Highway 61, bridge on west
bank
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Gooseberry River ............... . ^ mile upstream, on the north side
Encampment River ....... . ........ just below the bridge on Highway 01
Stewart River .......... . ........ approximately 300 feet upstream
from Highway Gl bridge
Knife River ..................... 3/4 mile upstream
Sucker River .............. . ..... k rnilc upstream from bridge on
Highway Cl
Schmidt Creek ......... . ......... approximately 300 feet above
barricade in stream, off Highway Cl
French River ..... = .. .......... 1/C mile upstream from the Old North
Shore Road
Talmadge River ....... . .......... approximately 1/3 mile upstream
from Highway 61 bridge
Lester River .................... \\ miles upstream from Highway C 1
Upper St. Louis River .... ....... % rail above Highway 2 bridge above
Cloquet
Lower St. Louis River ... ....... . just off Billings Park, Superior,
VJisconsin
Upper Nemadji River ............. near point where County Road C cross-
es river
Lower Nemadji River ...... ....... just dox\instream from suspended pipe-
line
The baskets in which the clams were held in the streams measured 16 x
12 x 10% inches and were constructed of light gauge steel rod similar
to milk bottle carriers in use some years ago. Since the clams would
be unable to move out of the site once the baskets were placed In po-
sition and thus would be in danger of being silted over if placed in
the bottom of the large containers, smaller baskets were fabricated
from hardware cloth and the clams were placed in these. The small
baskets were then wired in a suspended position within the larger con-
tainer (Fig. S). The latter was finally attached by a long wire lead
to a convenient tree, bush, or boulder in the water or on the adjacent
bank.
The clams used in the investigation were collected by SCUBA diving from
the Mississippi River near Deer River, Minnesota. During the months of
May and June, 523 clams were "planted" in 24 streams. Fifty-one of the
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clams taken from the Mississippi River were set aside as controls,
frozen immediately, and sent to the State Health Department for analy-
sis for pesticide content.
As the first approach to the "planting" of clams, four specimens were
placed in each of the following streams on May 8: Pigeon, Baptism,
Beaver, and Knife. On May 22, 24, and 26, five additional clams were
added to the following streams;
Pigeon Temperance Stewart Talmadge
Reservation Baptism Knife Lester
Devil Track Beaver Big Sucker St. Louis
Cascade Manitou Schmidt Creek Nemadji
Poplar Split Rock French
Fifteen additional clams were placed in the baskets in each of the
above-named streams on June 13 and 14. Fifteen clams were also placed
in two additional streams, namely the Gooseberry and Encampment Rivers,
as well as in two sites in the St. Louis and Nemadji River. Thus, in
the latter rivers, two locations were utilized, the upper and lower St.
Louis and the upper and lower Nemadji.
Beginning on June 22, each river was visited once a week to inspect the
sites for possible vandalism and to determine the level of water in the
streams. Every two weeks, commencing on June 29, each site was visited
for the purpose of collecting one clam from each river for analysis.
These routine visits and collections were made by Mr. Daniel Engstrom,
a senior Biology major at the University of Minnesota, Duluth, who, in
the performance of his duties, travelled in excess of 17,000 miles be-
tween May and December, 1970.
Water samples were taken once a month from 13 stations, beginning May
9, from each of the clam sites in the Pigeon, Beaver, Brule, Baptism,
Knife, St. Louis, and Nemadji Rivers. Samples from these streams were
specifically requested by the Minnesota Pollution Control Agency. The
investigators added the Lester River and one additional station in each
of the St. Louis and Nemadji Rivers. The last water samples were taken
during the first week in December from all streams except the Pigeon;
the last sampling from this stream was on November 1, 1970. Attempts
to reach the site in December were made impossible by blizzard condi-
tions which prevailed and which subsequently made the road impassable.
Collect .on of water samples was made by immersing 5-liter bottles in
the streams adjacent to the darn baskets. After filling, the bottles
were capped with screw tops lined with aluminum foil, transported to
the Department of Biology, University of Minnesota, Duluth, and held
in a constant-temperature room (40ฐ F.) until they could be shipped
to the State Health Department for analysis.
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Three additional water samples were collected according to the time-
table used for stream sampling. These were from the pumping stations
at Grand Marais and Duluth (untreated water) and a chlorinated sample
of effluent from the Duluth Sewage Disposal Plant.
All samples were analyzed for the presence of pesticides as well as
for suspended solids, suspended volatile material, and for turbidity.
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SECTION V
LABORATORY PROCEDURE FOR WATER SAMPLES
Analysis of the water saraples was by gas chromatography and the method-
ology followed in the preparation of samples for analysis was as follows:
Water saraples were collected in clean glass containers since plastic
readily absorbs pesticide from the water. After collection, samples
were kept cool until the laboratory analysis could be carried out. In
the laboratory a liter aliquot of the sample was removed and acidified
with 10 ml of HC1 (1:1 HC1 - H20). The water sample was then placed in
a large separatory funnel and extracted with chloroform. At each ex-
traction the funnel was shaken vigorously for at least one minute be-
fore separation. Four extractions were made, the first with 100 ml and
the others with 50 ml each, a total of 250 ml of chloroform. After
each extraction and after the phases had separated the chloroform layer
was drained away into a beaker.
The extracts from the above procedure were percolated through a chro-
matographic column packed with four inches of anhydrous sodium sulphate
to remove residual water. When all four extracts had been passed through
the column it was washed with several portions of fresh chloroform. The
combined (sulphate dried) chloroform extracts were then evaporated on
a steam bath to a final volume of approximately 5 ml. This concentrate
was next transferred to a 15 ml centrifuge tube and three rinses of pet-
roleum ether, each consisting of one to two ml, were used to Insure
quantitative transfer. After each rinse the solvent was evaporated to
dryness under a slow current of clean dry air. The residue was then
taken up in a measured volume of benzene or hexane from which an aliquot
was withdrawn and injected in a gas chromatograph for final analysis.
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SECTION VI
LABORATORY PROCEDURE FOR CLAM SAMPLES
Analysis of the clams, like water samples, was by gas chromatography.
However, the procedure for preparing the material for analysis was some-
what more elaborate. The following protocol details the method used;
Early trials indicated that the best procedure for killing the clams and
keeping them in good condition until an analysis could be made, was that
of freezing. As a consequence all specimens were promptly frozen after
collection and kept frozen until they were delivered to the analytical
laboratory. When the analyst was ready to undertake his examination the
clams were thawed at room temperature and the contents of the shell re-
moved. The full body weight of the clam, minus its shell, was then de-
termined and recorded for each specimen. Shells x/nich had been removed
X'jere marked so that each could be examined later to ascertain the spe-
cies, age and relative size of each clam. By this procedure body weight
could also be associated with the other findings.
Next the entire clam, exclusive of its shell, was placed in a blender
and ground up. If the total weight was 25 grams or more only a 15 gram
aliquot was removed from this ground slurry for the extraction procedure
which followed. During the grinding process, anhydrous sodium sulphate
was added to take up the water released. Also, it was found that the
sodium sulphate served as an abrasive x\/hich facilitated the grinding
process. Enough anhydrous sulphate was added so that the final mixture
did not clump. After its removal from the well mixed total sample, the
15 gram aliquot was placed in an Erlenmeyer flask and a measured amount
of extraction solvent was added. This solvent was made up of a mixture
of acetone-hexane (4:1) and enough was added to the flask to completely
cover the clam and anhydrous sodium sulphate mixture.
After standing for at least 24 hours, with occasional shaking, the fluid
portion of this mixture was filtered off into a graduated cylinder. The
amount recovered was recorded.
The solvent from the graduate was then evaporated to near-dryness on a
steam bath and placed on a column of "Activated Florisil" for addition-
al refinement. The Florisil column which was 4 inches long, was topped
with % inch of the anhydrous sodium sulphate drying medium. After the
sample had been placed on the column described it vjas eluted with a
petroleum ether-diethylether mixture (19:1). The eluant from the col-
umn was collected in a beaker and evaporated to dryness on a steam bath.
The dried residue was then taken up in fresh petroleum ether, using
three 2 ml portions, and transferred to a centrifuge tube. When neces-
sary the residue extract could be stored in this form until the chro-
matographic analysis could be made. Whether held for subsequent analy-
sis or for immediate processing, the final step consisted in the com-
plete evaporation of the petroleum ether to leave another dry residue
which could be taken up in an appropriate known amount of hexane. This
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final hexane solution was the material which was actually injected di-
rectly into the sample port of the gas chromatograph for the identifi-
cation and quantitation of any chlorinated hydrocarbons the clams may
have contained.
In the foregoing description of the sample preparation reference is made
at one point to "Activated Florisil" and a note of clarification is prob-
ably needed. The term activated simply means that the Florisil which is
being used for the clean-up part of the procedure in preparation of sam-
ples has been subjected to a special treatment to make it effective.
In this instance the Florisil was activated by heating in an oven at
650ฐC for three hours, followed by twelve hours at 130ฐC. When cooled,
water (57o by weight) was added to the powder which was then allowed to
stand for 24 hours before use. To insure consistency in its activity
the Activated Florisil was stored in sealed containers.
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SECTION VII
GAS CHRCMATOGRAPHY ANALYSIS
Gas chromatography. which has been largely developed since 1951, and
which represents a powerful analytical tool for the separation of gas-
eous and volatile substances, is admirably suited to the identifica-
tion and quantisation of chlorinated hydrocarbons. In this analytical
procedure the substance to be identified and measured is converted in-
to a gaseous state or dissolved in a volatile liquid which is converted
to vapor, and injected into a carrier gas passing through a specially
designed column. This column contains a solid adsorbent or a liquid
adsorbent supported on an inert solid. When a liquid adsorbent is used
the differences in the partitioning coefficients for the gaseous com-
ponents passing through the column is the basis for separation, where-
as when solid adsorbents are used it Is the differences in adsorption
coefficients which are important. In the type of analysis used here,
namely "elution analysis" solid adsorbents are not widely used because
gases are quickly adsorbed but are slowly desorbed. Since they are
given off slowly they produce elution peaks on the recorder which have
sharp fronts and tailing backs. Instead of solid adsorbents, partition
columns were used in these studies. These columns have liquid adsor-
bents which produce symmetrical elution peaks so that the area under
each peak can be estimated by measuring peak height alone or better by
multiplying the peak height by half its bandwidth.
Samples are introduced into the column of a gas chromatograph by a hy-
podermic syringe, the needle of which is forced through a piece of
self sealing material near the column entrance. The sample introduced
is usually small, 0.01 to 0.1 ml of volatile liquid. Columns are about
^ inch in diameter and one to several meters in length. Columns which
can be used for chlorinated hydrocarbon and pesticide analysis are com-
mercially available. Two such columns are identified as SE-30 and CV-
17."" Since the components of the injected sample are carried down the
column at a rate which varies inversely according to the affinity of
each for the adsorbent material on the column, the time of appearance
at the detector is a characteristic of each (establishing its identity)
and the area under each peak is a measure of its concentration.
It would appear that the primary requirement of a gas chromatograph is
that it adequately separates the components of a sample. However,
separation alone is not enough; one must also be able to identify the
peaks. This check can be made by carrying out various supplementary
types of wet-bench analysis or by injecting separately the test solution,
a known standard and a mixture of the latter two into a second column
with different properties than the one routinely used. A single peak
and the same retention time should be found.
When the nature (identity ) of the compound has been determined, quan-
*The column used in this work was an SE-30 constructed of stainless steel
%" diameter and 6 ft. in length. The adsorbent was 3.25% SE-30 on
GO-70 mesh Anakron ABS.
15
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tity becomes important. These values are determined by using known
volumes of standard preparations and determining the areas under the
curve, since this value is proportional to the amount of the compound.
A bit of caution must be observed at this point, especially where, as
in this study, an electron capture detector is used. This type of
detector is not equally sensitive to all pesticides and a given amount
of lindane, for example, will give a much greater response than an e-
qual amount of DDT. For this reason quantitation determinations must
be made separately for each pesticide and in the same solvent used for
the sample injection. Ordinarily results of the analysis are reported
in parts per million (PPM), however, in the study reported here all
results, unless otherwise noted, are presented in parts per billion
(PPB) because the concentrations were uniformly low and would have re-
quired ungainly decimals.
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SECTION VIII
RESULTS - WATER
The findings of this study are presented in detail in Tables I-XIII.
It will be seen, if these tables are examined, that the highest values
recorded are those found in the Lester River, the Duluth sewage effluent,
and the Lower St. Louis River on October 31. The values on that date
were 20.0, 20.6, and 21.8 ppb PP'DDT, respectively. These higher than
normal concentrations may be ascribed to the runoff resulting from the
heavy rains of the previous two weeks. This runoff apparently affected
other streams as well as indicated by PP'DDT levels of 9.7 ppb in the
Knife River, 7.4 ppb in the Lower Nemadji River, and on the following
day 1.8 ppb in the Beaver River. Apparently, the effect of runoff,
even when brought about by intermittent showers, produces higher pest-
icide levels in certain streams. This is demonstrated by the findings
on September 9 when such conditions prevailed. The PP' level of DDT
in ppb on that date was 11.2 for the Lester River, 3.4 for the Upper
St. Louis River, and 3.4 for the Upper Nemadji River.
The above values can be considered to be extremely high when comparisons
are made with the majority of the other samples taken in this study since,
with the exception of two stations, the median value for PP' was less
than 0.01 ppb. The two exceptions were the Upper St. Louis and the
Upper Nemadji Rivers where the medians were 0.03 and 0.02 ppb, respec-
tively. In almost every instance, PP'DDT was present in greater con-
centrations than its OP1 isomer or DDE.
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SECTION IX
RESULTS - CLAMS
The details relating to field operations and final results obtained in
the bioassay studies with clams exposed to surface waters will be found
in Tables XIV-XXXXI. Table XIV deals with field operations and sums up
the final disposition of all clams which were exposed for experimental
purposes during the season. Controls are reported separately in Table
XXXIX.
As a supplement to the basic study, 18 native clams collected from the
Upper St. Louis River station at various times during the year were an-
alyzed in the same manner as the clams "planted" for the bioassay work.
The results from this subsidiary investigation are summarized in Table
XXXX. If this and Table XXXXI are consulted it will be seen that na-
tive clams exposed for 5 to 12 years in the St. Louis River have ac-
quired appreciable quantities of chlorinated hydrocarbons. For example,
one specimen 10 years of age had accumulated PP'DDT in excess of 1600
ppb. The median figure for the whole series was 340 ppb. It is inter-
esting to note that a six-year old clam weighing only 3.5 grams had the
highest aldrin concentration of the series, namely 10,670 ppb or 10.67
ppm.
Table XXXXI documents the age, weight, and species of each specimen
analyzed. It will be seen that the three species represented in this
study were Lampsilis ventricosa, Lampsilis siliquoidea, and Ligumia
recta. Ages of these clams ranged from 5 up to 19 years. The older
specimens were dark in color and usually very badly eroded; in most
instances the entire umbone had been dissolved away. Growth lines were
extremely narrow but very distinct and even the oldest shell was sur-
prisingly small. For example, a mature shell of Lampsilis siliquoidea,
at least 11 years old, from the St. Louis River, had a total length of
only 64 mm and a weight of 13 grams. A dark, heavily eroded, 18-year
old Ligumia recta originally from the Deer River area had a total length
of 115 mm, a height of 47 mm, and a body weight of 42 grams.
In these days wild clams cannot be expected to be completely free of
chlorinated hydrocarbons and thus controls may be expected to include
specimens with appreciable levels of DDE and the isomers of DDT. The
controls used in this study were no exception even though they came
from a sparsely settled area near Deer River. In terms of the PP1
isomer of DDT, which was the chlorinated hydrocarbon in highest concen-
tration, it was found that three specimens of the 51 tested exceeded
1 ppm. Statistical consultants indicated that such extremely high val-
ues would make the use of means unreliable and suggested than only
medians should be employed for the evaluation of the data. On this ba-
sis, the control values arrived at were as follows; OP'DDT, 20 ppb;
PP'DDT, 17 ppb; DDE, ^10 ppb (the latter, for practical purposes, is 1
ppb).
19
-------
The details relating to the specific chlorinated hydrocarbon content
for any given individual test specimen or control clam may be found in
Tables XV to XXXXI. A summation of the median values, including the
control references, is found in Table XXXXII. If the summary table is
examined, it will be seen that in only four instances are the median
values exceeded. Thus, for PP', there was an increase in the body
burden of exposed clams in three streams only, the Brule, Beaver, and
Upper St. Louis. In the St. Louis and Beaver the median values were
41 ppb and 32 ppb, respectively, as contrasted with 20 ppb for the con-
trols. This is in keeping with observations that chlorinated hydrocar-
bon values have reached levels as high as 21.0 ppb in the St. Louis and
1.3 ppb i n the Beaver River after a series of rains. The high value
of 131 ppb in clams from the Brule cannot be accounted for at this time.
If the OP1 isomer is considered it will be seen that the median of 17
ppb in the controls is exceeded only in Beaver River clams which had
a value of 28 ppb. This difference may not be significant. All DDE
values were less than the median for controls.
The subsidiary studies carried out on "native clams", that is on natur-
ally occurring clams collected from the stream being studied, revealed
that the St. Louis River must be carrying a load of chlorinated hydro-
carbons either on an intermittent high level basis or at a low constant
level. This conclusion is based on the observation that these clams were
very much higher in their body burdens than the control groups. Also,
there could be no doubt that they had obtained their pesticides from
that river since they had matured there. Analysis for PP'DDT showed
that the median was 340 ppb as contrasted with the 20 ppb concentration
in controls. When OP' was checked the median was 67 ppb compared to
17 ppb for the controls. Finally, the median for DDE was 15 ppb where-
as the control level was <10 ppb. It should also be pointed out that
the range of values for PP1 was 93 ppb to 1630 ppb. However, no value
was as low as the<0.01 ppb level so commonly found in the controls.
The age of these clams ranged from 5 to 11 years. The 5-year old clam
which had a 93 ppb PP' level weighed only 3 grams. The 11-year old
specimen had 240 ppb of the PP' isomer. The highest value recorded,
namely 1630 ppb was reached in a 10-year old clam weighing 18 grams.
All native clams taken in the St. Louis River were Lampsilis siliquoidea.
20
-------
SECTION X
ACKNOWLEDGEMENTS
The contributions made by Dr. Theron 0. Odlaug and Dr. Theodore A. Olson
of the University of Minnesota, in directing and carrying out the field
studies and in the preparation of the final report of this study is here-
by gratefully acknowledged. Thanks are also extended to Mr. Pvussell Fra-
zier, Director of Laboratories and especially Mr. Vernon Tarman, analyst
for the State Health Department, for their competent professional ser-
vices in making pesticide analyses of the many water samples and the large
number of clam samples delivered to Lhem.
The assistance of Dr. Blanchard Krogstad and Mr. Daniel Engstrom, who
assisted the senior investigators in the implementation of the field
study is sincerely appreciated. Mr. Engstrom deserves special commenda-
tions for his performance in the role of sample collector and for the
high level of responsibility shown by him in the maintenance of accurate
and detailed scientific records.
21
-------
PESTICIDE STUDIES
FIG. I
23
BROOKSTON
MINNESOTA
WISCONSIN
-------
II
r!4
SILVER BAY
'BEAVER BAY
16
17
iKEWOOD
HARBORS
LAKE SUPERIOR
C....CLAM STATION
W WATER STATION
FIG. 2
-------
SILVER BAY
BAY
A...SAWBILL TRAIL
B...GUNFLINT TRAIL
SCALE = ONE INCH EQUALS 8 MILES
FIG. 3
-------
CANADA
MINERAL CENTER
GRAND MARAIS
L PIGEON RIVER
2. RESERVATION RIVER
3. BRULE RIVER (ARROWHEAD)
4. DEVIL TRACK RIVER
5. GRAND MARAIS PUMPING STATION
6. CASCADE RIVER
7. POPLAR RIVER
8. TEMPERANCE RIVER
9. MANITOU RIVEB
10. BAPTISM RIVER
II. BEAVER RIVER
12. SPLIT ROCK RIVER
13. GOOSEBERRY RIVER
14. ENCAMPMENT RIVE0
15. STEWART RIVER
16. KNIFE RIVER
17. BIG SUCKER RIVER
18. SCHMIDT CREEK
19. FRENCH RIVER
20. TALMADGE RIVER
21. DULUTH PUMPING
22. LESTER RIVER
23. UPPER ST. LOUIS
24. LOWER ST. LOUIS
25. DULUTH SEWAGE
26. UPPER NEMADJI
27. LOWER NEMADJI
STATION
RIVER
RIVER
TREATMENT
RIVER
RIVER
PLANT
FIG. 4
-------
Figure 5 - Type of basket used in bioassav studies
Figure '; - North Shore stream - L'IIL Tcmperai.ee: l;ivcr
-------
Figure 7 - North Shore streams - the Cascade River
^v**r*ฃ:i#
*L_
ฎ#,
'>$>** .,, *.> ซ>
Figure - - Ilorth Shore streams - the Split Rock River
-------
RIVER'PIGEON
TABLE I
WATER ANALYSIS
River
Number
1
OJ
Ui
Date
of
Sample
5-9
6-12
7-10
8-7
9-8
10-4
11-1
Field Data
b.
Water
Level
high, over
banks
down 3"
down 12"
same
same
up 1"
up 16"
Flowage
turbulent
turbulent
fast
fast
fast
fast
turbulent
temp .
(cฐ)
___
16
23
21
19
7
6
Analytical Data
Suspended
Solids
f *>Vn
11
6
7
Suspended
Volatile
Matter fPrv\
1
2
3
Turbidity
7.6
5.1
6.7
DDT (OP1)
<: .05 ppb
-------
RIVERA ARROWHEAD (BRULE)
TABLE II
WATER ANALYSIS
River
Number
3
Date
of
Sample
5-9
6-12
7-10
8-7
9-8
10-4
11-1
11-22
12-6
Field Data
- *" -
Wa t e r
Level
high, over
banks
down to
within bank.
down 9"
down 3"
down 1"
up 2"
up 22"
down 6"
Flcwage
turbulent
turbulent
turbulent
fast
fast
fast
turbulent
turbulent
:t '
Cemp.
(cฐ)
...
16
24
20
17
6
6
0
0
Analytical Data
Suspended
Solids
ppm
2
2
6
10
2
Suspended
Volatile
Matter
<: .5
2
3
2
.8
Turbidity
2
1.6
2.5
___
1.8
2
DDT (OP1)
^ .05 ppb
< .01 ppb
< .01 pub
< .01 ppb
< .01 ppb
< .01 ppb
1 . 6 r>pb
< .01 ppb
< .01 ppb
DDT(PP')
^ .05 ppb
< .01 ppb
< .01 opb
< .01 ppb
ซs .01 ppb
q .01 ppb
ซ5 .01 ppb
< .01 ppb
0.13 ppb
DDE
-------
RIVER:BAFT ISM
TABLE III
WATER ANALYSIS
River
Number
10
CO
Date
of
Sample
5-9
6-12
7-10
8-7
9-8
10-4
1 1-1
11-22
12-6
Field Data
*.
Water
Level
high, over
banks
down slight
down 12"
down 2"
same
up 3"
up 28"
down 10"
Flowage
turbulent
turbulent
moderate
moderate
moderate
moderate
turbulent
fast
turbulent
i
Cemp.
23
22
17
6
5
0
0
Analytical Data
Suspended
Solids
PPm
5
<: .5
< .5
8
0.8
Suspended
Volatile
Matter
2
-: -5
^ .5
1
0.8
Turbidity
2.8
0.8
1.2
1.3
1.8
DDT (OP1)
-: .05 opb
-: .01 ppb
: .01 ppb
- : .01 ppb
-: .01 ppb
-: .01 ppb
-: .01 ppb
-: .01 ppb
-: .01 ppb
DDT(PP')
: .05 ppb
: .01 ppb
-: .01 ppb
-: .01 ppb
-: .01 pnb
- .01 ppb
--: .01 ppb
<: .01 ppb
0.03 ppb
DDE
; .05 ppb
-: .01 ppb
-: ,01 ppb
-: .01 ppb
-: .01 ppb
-i .01 ppb
< .01 ppb
-------
TABLE W
GRAM) MAHAIS (PUMPING STA) WATER ANALYSIS
River
Number
5
jj
Date
of
Sampl
5-23
6-12
7-10
8-7
9-8
10-4.
11-1
11-22
12-6
Field Data
Water
Level
Flowage
Cemp.
Analytical Data
Suspended
Solids
ppm
2
< .5
< .5
13
0.8
Suspended
Volatile
Matter
2
< .5
< .5
2
0.8
Turbidity
1.3
1.7
0.9
1.7
0.7
DDT (OP1)
< .01 ppb
< .01 ppb
c .01 ppb
< .01 ppb
-------
RIVER:BEAVER
TABLE 5
WATER ANALYSIS
River
Number
11
Co
o
Date
of
Sample
5-9
6-12
7-10
8-7
9-8
10-4
11-1
11-22
12-6
Field Data
Water
Level
high
down 6"
down 8"
down 2"
same
up 1"
up 26"
down 12"
Flowage
fast
moderate
moderate
slow-mod.
slow
slow
turbulent
mod. -fast
Csmp.
(cฐ)
14
24
23
20
9
5
0
0
Analytical Data
Suspended
Solids
Ppm
16
3
14
15
4
Suspended
Volatile
Matter
2
2
2
2
2
Turbidity
17
6.5
28
16
9.2
DDT (OP1)
-------
RIVER'.KNIFE
TABLE VI
WATER ANALYSIS
River
Number
16
o
Date
of
Sampl
5-9
6-12
7-10
8-7
9-8
10-3
10-31
11-21
12-11
Field Data
Water
Level
high, over
banks
down 12"
down 29"
down 2"
up 12"
same
up 40"
down 30"
Flowage
fast
fast
sluggish
slow
slow
slow
turbulent
mod. -fast
Cemp.
14
27
22
20
11
6
1
0
Analytical Data
Suspended
Solids
ppm
24
0.8
4
9
2
Suspended
Volatile
Matter
3
0.8
1
1
1
Turbidity
64
2.
4-4
43
35
DDT (OP1)
ซg .05 ppb
< .01 ppb
< .01 ppb
< .01 ppb
< .01 ppb
< .01 ppb
<=j .01 ppb
< .01 ppb
DDT(PP')
^ .05 pob
^ .01 ppb
-< .01 ppb
< .01 opb
< .01 ppb
9.7 ppb
<: .01 ppb
0.02 opb
DDE
< .05 ppb
*s .01 ppb
< .01 ppb
n. .01 ppb
ฃ .01 ppb
< .01 ppb
<: .01 ppb
-------
LAKEWOOD, DULUTH
(PUMPING STATION)
TABLE VII
WATER ANALYSIS
River
Number
21
4>
I1
Date
of
Sample
5-26
6-12
7-10
8-7
9-9
10-5
11-4
11-27
12-11
Field Data
Water
Level
Flowage
Cemp.
(cฐ)
Analytical Data
Suspended
Solids
ppm
< .5
< .5
-: .5
12
0.8
Suspended
Volatile
Matter
< .5
< .5
< .5
3
0.8
Turbidity
1.9
4.5
0.8
1.2
1.2
DDT (OP1)
< .01 ppb
< .01 ppb
< .01 ppb
< .01 ppb
.65 ppb
< .01 ppb
< .01 ppb
ซ=: .01 prib
DDT(PP')
< .01 ppb
< .01 ppb
< .01 ppb
*z .01 ppb
2./0 pnb
< .01 ppb
< .01 ppb
^ .01 ppb
DDE
< .01 ppb
i .01 ppb
< .01 ppb
< .01 pt)b
<; .01 ppb
<: .01 pnb
<: .01 ppb
-------
RIVER'.'LESTER
TABLE VIII
WATER ANALYSIS
River
Number
22
^\
iv>
Date
of
Sampl
5-26
6-12
7-10
8-7
9-9
10-3
10-31
11-21
12-11
Field Data
Water
Level
high
down 6"
down 18"
down 2"
down 2"
same
up 15"
down 8"
Flcwage
turbulent
fast
sluggish
sluggish
sluggish
moderate
turbulent
turbulent
Temp.
(cฐ)
24
23
19
8
6
1
0
Analytical Data
Suspended
Solids
ppm
2
1
'- .5
: .5
-: -5
Suspended
Volatile
Matter
2
1
-: .5
-: .5
: .5
Turbidity
4.9
1.4
1.1
5.4
3.3
DDT (OP1)
-? .01 ppb
~i .01 ppb
< .01 ppb
< .01 ppb
2.3 ppb
-: .01 ppb
-: .01 ppb
-: .01 ppb
DDT(PP')
-: .01 ppb
-'. .01 ppb
- : .01 ppb
-^ .01 ppb
11.2 ppb
< .01 ppb
20.0 Dpb
.022 ppb
<: .01 ppb
DDE
-: .01 ppb
< .01 ppb
* .01 ppb
<: .01 ppb
< .01 pob
(
-------
RIVER:UPPER ST. LOUIS
TABLE DC
WATER ANALYSIS
River
Number
23
-P-
OJ
Date
of
Sample
5-8
5-26
7-10
8-7
9-9
10-3
10-31
11-21
12-11
Field Data
Water
Level
high
down 12"
down 42"
same
same
down 2"
up 18"
down 2"
Flcwage
fast
moderate
sluggish
sluggi sh
sluggish
sluggish
slow
slow
Cerap.
(cฐ)
24
24
20
11
6
1
0
Analytical Data
Suspended
Solids
ppm
48
14
3
9
2
9
Suspended
Volatile
Matter
5
3
2
3
2
3
Turbidity
14
4-9
2.7
4.4
3.6
2.8
DDT (OP1)
-: .05 npb
-t .01 ppb
< .01 ppb
-j .01 D-ob
0.85 pr>b
-: .01 ppb
-=: .01 ppb
-i .01 ppb
DDT(PP')
: .05 ppb
-: .01 ppb
: .01 ppb
-: .01 ppb
3.40 pnb
: .01 pob
0 . 1 pob
.079 Ppb
0.03 ppb
DDE
: .05 ppb
-: .01 pob
-: .01 pt)b
'. .01 ppb
-; .01 pob
( -: .01 ppb
Aldrin )
-: .01 rapb
-------
RIVER'-LOWER ST. LOUIS
TABLE X
WATER ANALYSIS
River
Number
24
>
Date
of
Sampl
6-14
7-10
8-7
9 9
10-3
10-31
11-21
12-11
Field Data
Wa t e r
Level
down 2"
same
down 1"
down 3"
up 4"
down 2"
Flowage
slow
sluggish
very
sluggi sh
very
sluggish
very slug.
very slug.
very slug.
Temp.
23
24
20
10
8
1
0
Analytical Data
Suspended
Solids
ppm
2
12
6
4
Suspended
Volatile
Ma 1 1 e r
2
6
o
2
Turbidity
3.5
7.0
7.3
2.2
DDT (OP1)
< .01 ppb
< .01 ppb
-------
DULUTH SEv/AGE PLANT
TABLE XI
WATER ANALYSIS
River
Number
27
Date
of
Sample
8-7
9-9
10-3
10 31
11 21
12-11
Field Data
Wa t e r
Level
Flcwage
Cemp .
(cฐ)
Analytical Data
Suspended
Solids
ppm
56
36
34
22
Suspended
Volatile
Matter
41
30
20
15
Turbidity
57
33
22
11
DDT (OP1)
<: .01 pnb
-t .01 ppb
-i .01 ppb
4.7 ppb
i .01 ppb
DDT(PP')
-: .01 ppb
-4 .01 pob
^ .01 pnb
20.6 ppb
.02 ppb
-s .01 pnb
DDE
<- .01 pnb
-: .01 ppb
-: .01 ppb
: .01 ppb
-------
RIVER'-UPPER NEMADJI
TABLE XII
WATER ANALYSIS
River
Number
25
Date
of
Sampl
5-8
5-26
7-10
8-7
9-9
10-3
10-31
11-21
12-11
Field Data
Wa t e r
Level
high, over
banks
down 60"
down 40"
up 2"
down 1 "
same
up 24"
same
Flcwage
moderate
slow
slow
slow
slow
slow
moderate
moderate
Temp.
(Cฐ)
I
10
23
24
20
9
6
2,
0
Analytical Data
Suspended
Solids
ppm
86
78
30
20
21
5
Suspended
Volatile
Matter
8
10
4
2
4
2
Turbidity
45
95
26
15
27
13
DDT (OP1)
<; .05 ppb
$ .01 ppb
-^ .01 ppb
--j .01 ppb
1.15 Ppb
-: .01 ppb
^ .01 ppb
-: .01 ppb
DDT(PP')
--: .05 ppb
< .01 ppb
-i .01 ppb
i .01 ppb
3.40 ppb
<: .01 ppb
1 . 4 ppb
0.02 ppb
DDE
: .05 ppb
-: .01 ppb
: .01 ppb
-: .01 ppb
" .01 ppb
( .024 ppb
Aldrin )
--: .01 ppb
-------
TABLE XIII
RIVER". LOWER NEMADJI
WATER ANALYSIS
River
Number
26
Date
of
Sample
6-14
7-10
8-7
9-9
10-3
10-31
11-21
12 11
Field Data
--.... ___ . fc-
Water
Level
within banks
down 6"
up 5"
up 1"
down 5"
up 5"
down 1"
Flowage
sluggish
sluggish
sluggish
sluggish
sluggish
sluggish
sluggish
ซ "
Cemp .
(cฐ)
24
24
21
10
7
2
0
Analytical Data
Suspended
Solids
ppm
22
10
15
7
Suspended
Volatile
Ma 1 1 e r
4
2
2
2
Turbidity
26
11
23
16
DDT (OP1)
< .01 ppb
<: .01 ppb
<: .01 ppb
0.06 ppb
' .01 ppb
-: .01 ppb
< .01 ppb
DDT(PP')
: .01 ppb
-: .01 Dpb
-: .01 opb
-: .01 Dob
-: .01 ppb
7.4 ^pb
.053 ppb
.02 ppb
DDE
-: .01 ppb
-: .01 ppb
-i .01 ppb
-: .01 ppb
(.048 ppb
Aldrin )
- .01 ppb
-------
TABLE XIV
SUMMARY OF FIELD OPERATIONS - CLAMS
River
|
Pigeon
Reservation
Arrowhead
Devil Track
Cascade
Poplar
Temperance
Manitou
Baptism
Beaver
Split Rock
Gooseberry
Encampment
Stewart
Knife j
j'
Number of
Clams
"Planted"
4
5
15
5
15
15
5
15
5
15
5
15
5
15
5
I Disposition of Clams
!
Date
May 9
May 23
June 17
I Collected
! for
1 Analysis
! 4
3
14
1
y
May 23
June 17
June 17
May 23
June 17
3
12
10
May 23 | 3
June 17
May 23
June 17
May 24
June 17
May 24
15 June 17
30
4
June 30
May 9
5 May 24
15
4
June 17
May 9
5 May 24
15 June 17
5
15
15
15
May 24
June 17
June 15
June 15
5 i May 24
15 | June 15
4
5
?
May 9
May 24
June 14
7 | June 22
48
i
r
15
l
9
11
4
19
2
Destroyed
or
Lost
1
5
4
1
4
4
4
15
9
2
5
t J
11
3
5
13
1
12
11
12
1
9
2
4
7
6
3
1
Died
2
2
3
l
2
3
2
1
1
2
1
1
1
4 i
3 !
3 j 1
3
\
4 i
4 j 2
2 j
i 1
f -L.
7 i
f
1
t
-------
TABLE XIV
SUMMARY OF FIELD OPERATIONS - CLAMS
River
Big Sucker
Schmidt Cr.
French
Talmadge
Lester
Upper St.
Louis
Lower St.
Louis
Upper
Nemadji
Lower
Nemadji
Number of
Clams
"Planted"
5
15
19 mixture
15
5
15
5
15
5
15
5
15
Ik mixtur<
i
1
5
15
Date
May 2k
June lU
June 22
May 24
June 15
May 2^
June 15
May 2k
June 15
May 26
June Ik
1
May 26
June 1^
f
15 I June Ik
s,
5 I May 26
15 I June Ik
15
June l6
49
Disposition of Clams
Collected
for
Analysis
15 mixed v,
13
11
k
15
Ik
1
: ll
5 mixed \i
6
10
4
12
12
k
11
15
Destroyed
or
Lost
ith May 2k cl
3
5
2
1
1th June 1^ c
9 mixec
k
3
k
Died
1
Jains
3
k
1
1
2
3
lams
with May 26
clams
1
3
1
-------
TABLE XV
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION:
BOTTOM:
TERRAIN:
FLOW:
RIVER PIGEON
200 yds downstream from old port of entry on U.S. side.
large rocks, gravel and pieces of slate.
steep banks to river in most places, some bluffs.
fast to occasionally turbulent.
VEGETATION: Alnus rugosa, Cornus stolonifera, Picea glauca, Pinus resinosa,
+Field
Number
c 1-5-9-70
c 1-5-23-70-
c 1-5-23-70-
c 1_6-17-70
c 1-6-30-70
c 1-7- K-70
c 1-7-27-70
d-8-11-70
c 1-8-25-70
c 1-9-8-70
c 1-9-22-70
c 1-10-4-70
cl-10-18-70-
Number of
Clams
"Planted"
4
5
15
1
Date
"Planted"
May 9
May 23
t,
June 17
Number of Clams
Retrieved and
Field Number
from c 1-5-9-70
from c 1-5-9-70
from c 1-6- 17-70
from c 1-6- 17-70
from c 1-6- 17-70
from c 1-6- 17-70
from c 1-6- 17-70
from c 1-6- 17-70
from c 1-6- 17-70
from c 1-6- 17-70
from c 1-5-9-70
Date
Retrievec
May 23
May 23
June 30
July 14
July 27
Aug. 11
Aug. 25
Sept. 8
Sept. 22
Oct. 4
Oct. 18
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
< .01 ppb
< .01 ppb
49.5 ppb
1 . 20 ppm
-< .1 ppb
< .1 ppb
< .1 ppb
< .1 ppb
<: . 1 ppb
77.0 ppb
^ .1 ppb **
DDT(PP')
< .01 ppb
< .01 ppb
170 ppb
6. 10 ppm
ซ: .1 ppb
< .1 ppb
*5 . 1 ppb
< . 1 ppb
-=: . 1 ppb
74.0 ppb
-< . 1 ppb
DDE
r .01 pp
e .01 pp
1.7 ppb
19 ppb
s .1 ppt
; .1 ppt
C .1 ppt
< .1 ppt
3 .1 ppt
35.0 ppl
t .1 ppl
Other
3
3
Ln
O
-------
TABLE XV
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER
(con't)
+Field
Number
d-10-18-0.
c 1-10-1 8-70-
cl-10-18-70-
d _1 0-1 8-70-
d-10-18-70-
c 1-10-13-70-
d-10-18-70-
d-10-13-70-
d-10-18-70-
c 1-10-1 8-70-
c=clam sa.mp.
1=no. of ri\
10=mo:ith
18= day
Number of
Clams
"Planted"
12
53
U
15
16
17
dS
d9
d10
d11
e
er
Date
"Planted"
Number of Clams
Retrieved and
Field Number
from c 1-5-9-70
from c 1-5-23-70
from c 1-5-23-70
from 01-5-23-^0
from o1-6-17-70
from c1-6-17-T)
from c 1-^-17-70
from o1-^-17-70
from -1-^-17-70
from d-^-T^-^O
** composite
Date
Retrievec
Oct. 1;;
Oct. 18
Oct. 18
Oct. 18
Oct. 18
Oct. 18
Oct. 18
Oct. 13
Oct. 1
Oct. 18
of sample s
70=year
d=clam dead when collected
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
*; . 1 ppb **
i .1 ppb **
: .1 ppb **
-i .1 ppb **
4 .1 pob **
<: .1 ppb **
-=: .1 ppb **
'-: .1 ppb **
--: .1 ppb *-
-=: .1 ppb
d_lO-l8-70-d-
DDT(PP')
* . 1 ppb
': .1 ppb
-: .1 ppb
< .1 ppb
-: .1 ppb
-: .1 ppb
-i .1 ppb
<. .1 ppb
<: .1 ppb
=: .1 ppb
thru d11 inc,
DDE
: .1 ppb
: .1 ppb
: .1 ppb
' .1 ppb
: .1 pob
: .1 ppb
: .1 ppt
^ .1 ppt
=: .1 ppt
^ .1 ppt
Other
11=soecific clam no. if more thin one collected at Game time
-------
RIVER HESIT
TABLE XVI
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION: 200 ft. upstream from bridge on highway #61.
BOTTOM: large boulders, gravel and sand in pools where current slower.
FLOW: moderate to fast current, occasionally turbulent.
TERRAIN: banks rather level, eroded in a few locations.
VEGETATION: Alnus rugosa, Corylus cornuta, Gornus stolonifera, Betula papyrifera,
and a few Abies balsamea.
+Field
Number
c2-5-23-70
c 2-4- 17-70
C2-6-30-70
c2-7- 14-70
c2-7-27-70
C2_8-11-70
c2-S-25-70
c2-9-S-70
c2-9-22-70
c 2- 10-4-70
c 2- 10- 18-70
C2-1 1-1-70
C2-1 1-3-70
Number of
Clams
"Planted"
5
15
Date
"Planted"
lay 23
June 17
Number of Clams
Retrieved and
Field Number
from c2-6-17-70
from c 2-6- 17-70
from c2-6-17-70
from c2-6-17-70
from c2-6- 17-70
from c2-6- 17-70
from c2-6-17-70
from c 2-6- 17-70
from c 2-6- 17-70
from c2-6- 17-70
from c2-6- 17-70
Date
Retrievec
June 30
July 14
July 27
AUP . 1 1
AUP. 25
Sept. 8
Sept. 22
Oct. 4
Oct. 18
Nov. 1
Nov. 8
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
< .1 ppb
94 ppb
655 ppb
-< .1 ppb
700 ppb
<; . 1 ppb
: .1 ppb
-: .1 ppb
-: .1 ppb
: .1 ppb
39.0 ppb
DDT(PP')
162 ppb
611 ppb
ซ: . 1 ppb
s .1 ppb
3.72 ppm
< . 1 ppb
ซi .1 ppb
134 ppb
i .1 ppb
^ .1 ppb
106 ppb
DDE
0.6 ppb
< .1 pp
"5 .1 PT3
ซ .1 PP
85 ppb
ซ* .1 pp
r4 .1 ppt
< .1 ppl
< .1 ppl
< .1 ppt
18.0 pp\
Other
3
3
>
3
-------
TABLE XVI
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER
^YaTIUII (con't)
+Field
Number
C2-1 1-22-70
c2 1 ' ^ 70 "
C2-12--70-;
c=cl'v.Ti sam~o!
2=no . of ri\
,12=month
70=year
3=specific c
Number of
Clams
"Planted"
^
er
lam no. if
Date
"Planted"
more th in ;
Number of Clams
Retrieved and
Field Number
from c2-h-17-70
from c? ^ -"'3 7' '
froin e2-5-23-70
from C2-5-23-70
me collected at same
dashed line i
** composite
Date
Retrievec
;iov. 22
Dec. n
Dec. 6
Dec. 6
time
ndicates nc
of samples
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
-------
RIVER ARROWHEAD (BR1JLE)
TABLE XVII
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION: 200 ft. upstream from bridge on highway 61.
BOTTOM: large boulders and rocks.
PLOW: fast to turbulent
TERRAIN: very steep banks and high bluffs except in short stretch below bridge
VEGETATION: Cornus stolonifera, Alnus.-rugosa, Rubus strigosus, Ribes sp.,
Betula papyrifera, Picea glauca, Abies balsamea.
+Field
Number
03-^-17-70
c3_6-3G-70
c 3 -7- 14-70
n
c3_7-27-70
C3_B_11-70
c3_g_25-70
c 3 -9 -3-70
c 3 -9 -22-70
c3- 10-4- 70
C3-10-18-70
03-1 1-8-70
c3_i 1-22-70
r> 1 1 9 A ^H
cj i<.o/Ui
Number of
Clams
"Planted"
15
Date
"Planted"
June 17
Number of Clams
Retrieved and
Field Number
from 03-^-17-70
from c3-6- 17-70
iron C3-S-17-70
from 03-^-17-70
from 03-^-17-70
>om 03-6-17-70
from c3-6-17-70
from c3-6-17-70
from c3-6-17-70
from c3->-17-70
from c3-6- 17-70
from c3 6 17 70
Date
Retrieved
June 30
July 14
July 27
Au^. 11
Au/> 25
Sept. 3
Sept. 22
Oct. 4
Oct. 18
Nov. 3
Nov. 22
Dec. 6
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
-s .1 ppb
635 ppb
-< .1 ppb
< .1 ppb
49 ppb
< .1 ppb
< .1 ppb
110 ppb
<; .1 ppb
*i .1 ppb
^ .1 ppb
DDT(PP')
131 ppb
3.5 ppm
< . 1 ppb
"S .1 ppb
147 ppb
< . 1 ppb
-------
TABLE XVII
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER AK.(Unfi I I'iAD ( c o, L < t)
+Field
Number
C3-12-6-70-,
03-12-6-70-3
r> ^ 1 ~> .^ ^7O
1
T
c=cla,m saTin"
3=no . of ri\
6= day
70=ve-.r
4= specific :
Number of
Clams
"Planted"
er
1 i.i no. if
Date
"Planted"
T- .' t;T 11
Number of Clams
Retrieved and
Field Number
fror:i c "-6- 17-70
from -3-6- 17-70
in.!5 2oll'"cto'l "t s 7i f
dashed line :
** composite
Date
Retrievec
, ^ ^
DPC . ^
til-
ndicates n<
of samples
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
176 ppb **
176 ppb **
analysis mad*
c3_ 12-6-70-2 j
DDT(PP')
285 ppb
285 ppb
nd -3
DDE
72 ppb
72 ppb
Other
-------
RIVER DEVIL TRATK
TABLE XVIII
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION: 400 ft. upstream from bridge on Gunflint Trail, just above entry
of Elbow Creek.
mostly broken pieces of slate, a. few boulders.
BOTTOM:
FLOW:
TERRAIN:
usually fast, occasionally turbulent, during dry weather...moderate.
flat with low banks.
VEGETATION: Alnus rugosa, Rubus strigosus, Betula papyrifera, Prunus
+Field
Number
c4_5_23-70
c4-6- 17-70
Ln c4-6-30-70
c4_7_ 14_70
c4_7_27-70
C4_B-11_70
c4-8-,?5-70
c 4-9 -8 -70
04-9-2^-70
c4- 10-4-70
c4~1 0-1 3-70
04-1 1-3-70
Number of
Clams
"Planted"
5
15
Date
"Planted"
i ry 23
June 17
Number of Clams
Retrieved and
Field Number
from c4-6- 17-70
from c4-6- 17-70
fron c4-6- 17-70
fron -4-6-17-70
from c4-6- 17-70
from c4-6-17-''''0
from c/,-6-17-7"
fro-i -4-6-17-70
from c4-6- 17-70
from c4-6- 17-70
Date
Retrieved
June 30
July 14
July 27
Aup;. 11
Aurc. 25
Sont. "
Sent. ":2
Oct. L
Oct. 13
Nov. 3
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
< . 1 ppb
240 ppb
< . 1 ppb
75 ppb
15 ppb
? .1 ppb
< .1 ppb
156 ppb
-s .1 ppb
35.0 ppb
DDT(PP')
< .1 ppb
1.27 ppm
< ,1 ppb
< . 1 ppb
63 ppb
< .1 ppb
z .1 ppb
< .1 ppb
< .1 ppb
131 ppb
DDE
ซ! .1 pp
< .1 pp
<* .1 pp
8.0 ppt
< -1 PI
< .1 PI
< .1 pi
62 ppb
< .1 PI
38.0 pi
Other
3
b
D
D
3
D
b
b
-------
RIVER CASCADE
TABLE XIX
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION: apx. one half mile upstream from bridge on highway #61.
BOTTOM:
FLOW:
TERRAIN:
large boulders and slate outcrop.
moderate to fast, occasionally turbulent.
steep banks and high bluffs, river is a series of cascades and small
waterfalls.
VEGETATION: Cornus stolonifera, Alnus rugosa, Betula papyrifera, Picea glauca,
Abies balsamea, Pinus Strobus, Pinus resinosa.
+Field
Number
c6-5-23-70
c6-6-17-70
c6-6-30-70
c 6-7-1 4-70
c6-7-27-70
c6-8-11-70
c6_8-25-70
c6-G-3-70
c6-9-22-70
C6- 10-4-70
C6-10-18-70
c6-1 1-1-70
C6- 11-3-70
Number of
Clams
"Planted"
5
15
Date
"Planted"
M.?.y 23
June 17
Number of Clatns
Retrieved and
Field Number
from c6-6-17-70
Prom c6-6-17-70
from c6~6- 17-70
from c6~6-17_70
from C6~6- 17-70
from c6-6- 17-70
fron c6-6- 17-70
from 06-6-17-70
from c6-6- 17-70
from c6-6-17-70
from 06-6- 17-70
Date
Retrtevec
June 30
July 1 4
July 27
Aug. 11
Au';;. '''^
Sept. G
Sept. 22
Oct. 4
Oct. 1-ri
Nov . 1
Nov. 8
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
< . 1 ppb
ซ . 1 ppb
< .1 ppb
c . 1 ppb
10 ppb
< .1 ppb
-i .1 ppb
333 ppb
40 ppb
12.0 ppb
< ,1 ppb
DDT(PP')
<. . 1 ppb
1.39 ppm
< . 1 ppb
< .1 ppb
52 ppb
< . 1 ppb
~4 .1 ppb
567 ppb
139 ppb
348 ppb
-t .1 ppb
DDE
ซC .1 pp
< .1 pp
< .1 pp
^s . 1 pp
3 ppb
< .1 pp
-.: .1 pi
24 ppb
-: .1 pi
30.0 p;
- .1 PI
Other
)
}
3
D
b
:>
3
3
3
-------
TABLE XIX
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER CASCADE (con't)
+Field
Number
c6-1 1-22-70
C6_ 12-6-70-
C6- 12-6-70-4
/-ป A 19 ฃ, OTl L
C6- 12-6-70-^
c=claTi samp!
6=no. of riA
12=Tionth
6=dav
70=ye '.r
6=specific t
Number of
Clams
"Planted"
er
jj"! no. if
Date
"Planted"
nro tli n
Number of Clams
Retrieved and
Field Number
from c '->-6 -17-70
from c6-5-23-70
fY>nm r:i^ ฃ, O'J VO
from 06-6-17-70
fr-orn p6 6 17 70
from 06-6-17-70
dashed line i
** composite
no c xU.ooted nt rw.v
Date
Retrieved
Nov. 22
Dec. 6
Dec. 6
Dec. 6
Dec 6
Dec. 6
ndicates nc
of samples
tine
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
< .1 ppb
< .1 opb **
< .1 ppb **
4 .1 ppb **
analysis made
c6-1 2-6-70-1,
DDT(PP' )
* .1 ppb
^ .1 ppb
< .1 ppb
ซs .1 ppb
-1+ and -6
DDE
< .1 pp
ซ8 .1 pp
=s .1 pp
< .1 pp
Other
3
3
D
b
-------
RIVER P01JL/Lt
TABLE XX
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION: 200 yds upstream from bridge on highway #61.
BOTTOM: large boulders and basaltic lava flows.
FLOW: usually very turbulent.
TERRAIN: steep banks and high bluffs, river is a series of rapids and falls.
VEGETATION: Cornus stolonifera, Betula papyrifera, Abies balsamea, Picea glauca.
+Field
Number
C7-5-23-70
c7_^_17_70
c7_6-30-70
C7-7-14-70
c7_7_27_70
c 7-8-1 1-70
c7_8-25-70
C7_9_8_70
C7_o_22-70
C7_ 10-4-70
C7-10-18-70
ri -1 ,-ซ -if} rjr\
C / ID Id /U-
Number of
Clams
"Planted"
5
15
j
Date
"Planted"
May 23
June 17
Number of Clams
Retrieved and
Field Number
from c7-6- 17-70
from 07-^-17-70
from c7-6- 17-70
from c7-6- 17-70
frora c7-6- 17-70
from c7-6-17-70
from c7-6- 17-70
frora c7-6- 17-70
from c-7-6-17-70
from c7-5-23-70
dashed line :
Date
Retrievec
June 30
July 14
July 27
Aug. 11
AUK. ~5
Sept. 8
Sept. 22
Oct. 4
Oct. 1G
Oct. 13
ndicates n<
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
c . 1 ppb
644 ppb
^ . 1 ppb
ซ5 . 1 ppb
*?; .1 ppb
"f .1 ppb
< .1 ppb
37.0 ppb
< .1 ppb
analysis mad<
DDT(PP')
c .1 ppb
2.17 ppm
* ซ1 Ppb
< . 1 ppb
<= .1 ppb -
< .1 ppb
s .1 ppb
115 ppb
^ .1 ppb
DDE
ซr .1 pp
11 ppb
ซ .1 PI
T: .1 pi
< .1 pi
< .1 PI
s -1 P]
< .1 p
< .1 p
Other
D
b
b
3
D
3
3
3
Ln
O
-------
TABLE XXI
CLAM SAMPLE - RIVER TEMP 'JRArCS
SITE DESCRIPTION:
LOCATION: 100 yds downstream from Simile Bridge just off Sawbill Trail.
BOTTOM:
FLOW:
TERRAIN:
boulders, large rocks, gravel and some sand in few locations
where current slows.
usually fast to turbulent.
rather level in this area of stream with gradual banks, river is a
continuous series of rapids,
VEGETATION: Alnus rugosa, Prunus virginiana, Yiburnum trilobumf Fraxinus nig^a,
+Fteld
Number
c3-5-24-70
CS-A- 17-70
ccj_^_3o_70
c 3-7- 14-70
C3_7_27-70
C8-S-11-70
c8-3-25-70
c 8-9-8-70
c8-9-22-70
08- 10-4-70
cB-1 0-1 3-70
c3-11-1-70
c8-l 1-8-70
Porvnlii.q bal samifffra. Pi nan. p~\ fvnr, *>.ป,
Number of
Clams
"Planted"
5
15
Date
"Planted"
:L-,y 24
June 17
Number of Clams
Retrieved and
Field Number
from cS-6- 17-70
from cr1.-6-17-70
from 08-6- 17-70
from c3-6-17-70
from C3-6-17-70
from c3-6-17-70
from c-;-6- 17-70
from 08-6- 17-70
from c3-6-17-70
from c 3-6- 17-70
from c3-6- 17-70
Date
Retrieved
June 30
July 14
July 27
Aus;. 11
Aug. 25
Sept. 8
Sept. 22
Oct. 4
Oct. 13
Nov. 1
Nov. 8
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
17 ppb
35 ppb
< .1 ppb
ซs .1 ppb
< .1 ppb
< . 1 ppb
74.0 pob
128 ppb
< .1 ppb
-^ .1 ppb
27 pob
DDT(PP')
258 ppb
1 .32 ppm
< .1 ppb
^ . 1 ppb
< .1 ppb
^ . 1 ppb
<: .1 ppb
70.0 ppb
-~ .1 ppb
233 ppb
94 ppb
DDE
* .1 pp
< .1 PP
-5 .1 PP
< .1 p;
< .1 PJ
< .1 PI
19.0 pt
60.0 p;
< .1 p;
65 ppb
40 ppb
Other
D
b
b
b
b
b
b
to
to
cr-
O
-------
RIVER 11ANITUU
TABLE XXII
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION: 4.00 ft. upstream from bridge on highway #61.
FLOW:
slow to moderate current except when water was high.
TERRAIN: banks of river consist of steep, high bluffs or cliffs, forms narrow
gorges, river is a series of falls and deep channels.
VEGETATION: Thuja occidentalis, Abies balsamea, Pinus strobus.
BOTTOM:
large boulders in rapids and gravel and rocks in deep channels.
-fField
Number
C9-5-24-70
c9_6-17-70
c9-6-30-70
C9-7-14-70
c9-7-27-70
c9_8-11-70
c9-8-25-70
c9-9-8-70
c9-9-22-70
c9- 10-4-70
cg_11_8-70
c9- 12-6-70-1
c9_12-6-70-:
Number of
Clams
"Planted"
5
15
30
Date
"Planted"
May 24
Juno 17
June 30
Number of Clams
Retrieved and
Field Number
from c9-5-24-70
from c9-6-30-70
from c9-6-30-70
from C9-6-30-70
from c9-6-30-70
from c9-6-30-70
from c9-6-30-70
fron c' -6-30-70
from c9-6-30-70
from c9-5-24-70
from c9 5 24 70
Date
Retrievec
June 30
July 14
July 27
Aug. 11
Aug. 25
Sept. G
Sept. 22
Oct. .4
Nov. 8
n /
Dec . o
Dec. 6
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
^ . 1 ppb
< .1 ppb
ซ< . 1 ppb
< . 1 ppb
< .1 ppb
* . 1 ppb
<: .1 ppb
< .1 ppb
DDT(PP')
^ . 1 ppb
< .1 ppb
< . 1 ppb
< .1 ppb
< . 1 ppb
< . 1 ppb
-S .1 ppb
< .1 ppb
DDE
C .1 pp
ซ .1 pp
< .1 pp
< .1 PI
ซ .1 pp
< .1 pi
< -1 PI
< .1 p
Other
b
D
b
b
:>
~)
b
D
-------
TABLE XXII
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER MANITOU (con't)
+Field
Number
cq_ 12-4-70-
r-Q 1 ? A 7O
ซQ 10 ^ vn
r>o 1 9 A ^n
^
o
cg_12-6-70-
CV \^L^> /U c
nO 10 A OTl C
c9- 12-6-70-1
eg- 12-6-70-
cy i ซi o /u
CV lO A TO ^O
from C9-6-30-70
-r-r./^m ,->o ^ 7H rrn
fi n Q ( OQ r-^n
from c9-6-30-70
T-^rvm ^-.O A ^H r/Tl
from c9-6-30-70
from c9-^-30-70
dashed line :
** composite
Date
Retrievec
Dec. 6
Dec. 6
Dec. 6
Dec. 6
Dec. 6
Dec. 6
Dec. 6
Dec. 6
Dec. 6
Dec. 6
Dec. 6
Dec. 6
ndicates nc
of sample s
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
51 ppb **
51 ppb **
51 ppb **
51 p;>b **
analysis mad(
c9_ 12-6-70-3,
DDT(PP')
71 ppb
71 ppb
71 ppb
71 ppb
-7, -10 and -'
DDE
27 ppb
27 ppb
27 ppb
27 ppb
4
Other
-------
RIVER BAP'L'IuM
TABLE XXIII
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION: 200 ft. downstream from bridge on state highway #1.
BOTTOM: b'oulders, large rocks and some gravel.
FLOW: usually fast, occasionally turbulent.
TERRAIN: level with gradually sloping banks.
VEGETATION: Alnus rugosa, Corylus cornuta, Cornus stolonifera.
+Field
Number
c 10-5-9-70
c 10-5-24-70
^ c 10-5-24-70
dO-6-17-70
c10-6-30-70
c 10-7- 14-70
c 10-7-27-70
c 10-8- 11 -70
c 10-8-25-70
c 10-9-8-70
dO-9-22-70
C1 0-1 0-4-70
c10-10-13-7<
Number of
Clams
"Planted"
4
1 5
2
15
Date
"Planted"
Hay 9
May 24
June 17
Number of Clams
Retrieved and
Pield Number
from c 10-5-9-70
from dO-5-9-70
from d 0-6- 17-70
from d 0-6- 17-70
from c 10-6- 17-70
from c 10-6- 17-70
from dO-6-17-70
from c 10-6- 17-70
from dO-6-17-70
from d 0-6- 17-70
from dO-6-17-70
Date
Retrievec
May 24
May 24
June 30
July 14
July 27
Aug. 11
Aug. 25
Sept. 8
Sept. 22
Oct. 4
Oct. 18
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
1.35 ppb
1.35 ppb
< . 1 ppb
600 ppb
*s .1 ppb
*! . 1 ppb
< .1 ppb
^ .1 ppb
<: .1 ppb
72 ppb
-5 .1 ppb
DDT(PP')
4-50 ppb
4.50 ppb
< . 1 ppb
3.08 ppm
< .1 ppb
c . 1 ppb
< . 1 ppb
< . 1 ppb
< .1 ppb
195 ppb
K .1 ppb
DDE
< .2 p;
< .2 pt
< .1 pi:
^ .1 pi
c .1 PI
< .1 pi
< .1 PI
< .1 PI
<: .1 p;
< .1 p
< .1 p
Other
3
b
b
b
3
b
3
3
3
b
b
-------
TABLE XXIII
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER BAPTISM (con't)
+Field
Number
C1 0-1 1-8-70
c1 0-1 1-22-7
o>
-F-
Number of
Clams
"Planted"
Date
"Planted"
Number of Clams
Retrieved and
Field Number
from c 10-6- 17-70
from c 10-6- 17-70
Date
Retrieved
Nov. 8
Nov. 22
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
s .1 ppb
< .1 ppb
DDT(PP')
-------
RIVER BiiAVKR
TABLE XXIV
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION: down steep bank adjacent to spur road off state highway #4-
BOTTOM:
FLOW:
TERRAIN:
large boulders and basaltic lava flows,
usually slow to moderate, occasionally fast.
steep banks and rather rugged relief, river is a series of small
waterfalls and pools.
VEGETATION: Corylus cornuta, Alnus rugosa, Thuja occidentalis, Picea glauca,
Pinus strobus, Fraxin nigra.
+Field
Number
c 11-5-9-70
cl 1-5-24-70
^ c 11-5-24-70
Ui
c 11-6-17-70
ci 1-6-30-70
c1 1-7- 14-70
C1 1_7_27-70
C11_8-11-70
c 11-8-25-70
c 11-9-8-70
C1 1_9_22-70
c 11-10-4-70
d1_10-18-7<
Number of
Clams
"Planted"
4
1 5
2
15
Date
"Planted"
May 9
May 24
June 17
Number of Clams
Retrieved and
Field Number
from c1 1-5-9-70
from c1 1-5-9-70
from c 11-6-17-70
from c 11-6-17-70
from c 11-6- 17-70
from c 11-6- 17-70
from c 11-6-17-70
from c 11-6- 17-70
from c 11-6-17-70
from c 11-6- 17-70
from c 11-6- 17-70
Date
Retrievec
May 24
May 24
June 30
July 14
July 27
Aug. 11
Aug. 25
Sept. 8
Sent. 22
Oct. 4
Oct. 18
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
93.2 ppb
93.2 ppb
32 ppb
< . 1 ppb
106 ppb
108 ppb
23 ppb
-* .1 ppb
16 ppb
83 ppb
96 ppb
DDT(PP')
< .2 ppb
<. .2 ppb
640 ppb
< . 1 ppb
145 ppb
209 ppb
102 ppb
< .1 ppb
72 pob
276 ppb
255 ppb
DDE
< -2 PF
< .2 PF
<: .1 PI
<: .1 PI
83 ppb
9 ppb
< .1 PI
< .1 PI
3.0 pp
10 ppb
45 ppb
Other
D
3
3
b
3
3
Hg .07 ppb
-------
TABLE XXIV
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER BEAVER (con't)
+Field
Number
C11_11_8_70
c1 1-1 1-22-7
C I I I ti O f(J
^
c 11_12-6-70
c 11-12-6-70-
c 1 1-12-6-70-
c 1 1-12-6-70-
C1 1-12-6-70-
c 11-12-6-70-
C1 1-12-6-70-
Number of
Clams
"Planted"
1
2
3
M-
2
1
17
Date
"Planted"
Number of Clams
Retrieved and
Field Number
from d 1-6-17-70
from c 11-6-1 7-70
-f*f>r>Yn /-> *1 1 ^ O ^H
from c 11-5-24-70
I rom c I I p
-------
RIVER SPLIT HOCK
TABLE XXV
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION: 4,00 ft. upstream from bridge on highway #61 in most westerly branch.
BOTTOM:
FLOW:
TERRAIN:
mud and silt except in riffles where gravel forms bottom.
usually quite sluggish
river splits into several meandering branches over broad flood plain,
flood plain surrounded by gradually sloping hills.
VEGETATION: Alnus rugosa, Cornus stolonifera, Corylus cornuta, Betula papyrifera>
Ribes so.
+Field
Number
C12-5-24-70
C12-6-17-70
c 12-6-30-70
^ C12-7-14-70
c 12-7-27-70
C12-8-11-70
c 12-8-25-70
c 12-9-8-70
d2-9-8-70-d
c 12-9-22-70
c 12- 10-4-70
d2-10-l8-7(
C12-11-1-70
Number of
Clams
"Planted"
5
15
Date
"Planted"
May 21^
June 17
Number of Clams
Retrieved and
Field Number
from c 1>6-17-70
from c 12-6- 17-70
from c 12-6- 17-70
from c 12-6- 17-70
from c 12-6- 17-70
from c 12-6- 17-70
from 012-5-24-70
from c 1^-6-1 7-70
from c 1^-6- 17-70
from c 12-6- 17-70
from c 12- --17-70
Date
Retrievec
June 30
July 14
July 27
Aug. 11
Aug. 25
Sept. 8
Sept. 8
Sept. 22
Oct. 4
Oct. 18
Nov. 1
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
< .1 ppb
-^ . 1 pob
28 ppb
< . 1 ppb
<: . 1 ppb
34 ppb
< .1 ppb
i .1 ppb
169 ppb
16 ppb
97 ppb
DDT(PP!)
< . 1 ppb
< .1 ppb
238 ppb
74 ppb
< .1 ppb
< . 1 ppb
< .1 ppb
<7 .1 ppb
355 ppb
82 ppb
<: .1 ppb
DDE
< -1 PP
< .1 ppj
< .1 pj
< .1 pp
< .1 pj
< .1 pp
< .1 pi
< .1 PI
=: .1 PI
< -1 P!
75 ppb
Other
3
}
)
b
3
b
b
b Hg < .05 pot
b Hg .12 ppt
D
-------
TABLE XXV
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER SPLIT HOCK (con't)
+Field
Number
c12-1 1-8-70
C12-11-22-7
CD
Number of
Clams
"Planted"
Date
"Planted"
Number of Clams
Retrieved and
Field Number
from c 12-6- 17-70
from c 12-6- 17-70
Date
Retrievec
Nov 8
Nov 22
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
< .1 ppb
~z .1 ppb
DDT(PP')
< .1 ppb
< .1 ppb
DDE
s .1 pp
< .1 pp
Other
3
D
-------
RIVER GOO^UBltftKY
TABLE XXVI
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION: apx. one fourth mile upstream from bridge on highway #61.
BOTTOM:
FLOW:
TERRAIN:
basaltic lava flows with a few large boulders and rocks.
usually slow to sluggish in pool where clams located.
river cuts deep gorge in lower reaches of river, however, where clams
are located the banks are only moderately steep with some rapids.
VEGETATION: ALnus rugosa, Corylus cornuta, Rubus parviflorus, Thuja occidentalis,
Picea glauca. Betula papyrifera, Ribes sp.
+Field
Number
c13_6_l5-70
c 13-6-29-70
C13_7_13_70
3
c13-7-2S-70
c 13-8-1 0-70
c 13-3-24-70
C13_9_7_70
c 13-9-2 1-70
c 13- 10-3-70
c13_10-17-7(
d3-10-31-7(
c 13- 11-7-70
Number of
Clams
"Planted"
15
Date
"Planted"
June 1 5
Number of Clams
Retrieved and
Field Number
from c 13-6-1 5-70
from c 13-6- 15-70
from c13-6-15-70
from c 13-6- 15-70
from c13-6-15-70
from c13-6-15-70
from c 13-6-1 5-70
from c 13-6- 15-70
from c 13-6- 15-70
from c 13-6-1 5-70
from c 13-6-1 5-70
Date
Retrievec
June 29
July 13
July 28
Aug. 10
Aug. 24
Sept, 7
Sept. 21
Oct. 3
Oct. 17
Oct. 31
Nov. 7
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
< . 1 ppb
945 ppb
< .1 ppb
< .1 ppb
-------
TABLE XXVII
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION:
BOTTOM:
PLOW:
TERRAIN:
RIVER ENCAMPMENT
100 ft. downstream from bridge on highway #61.
a few boulders, large rocks and gravel covering basaltic flows.
usually sluggish to slow except in dry weather when pools became
somewhat stagnant.
banks somewhat steep but vegetated.
VEGETATION: Alnus rugosa, Gornus stolonifera, Thuja occidentalis, Betula
papyrifera, Abies balsamea.
+Field
Number
014-6-15-70
014-6-29-70
014-7-13-70
0
014-7-23-70
014-8-10-70
c 14-8-24-70
c 14-9-7-70
c 14-9-2 1-70
014-10-3-70
c14_10-17-7(
ci4_10-31-7(
c 14- 11 -7-70
cl4-H_21-7(
Number of
Clams
"Planted"
15
Date
"Planted"
June 1 5
Number of Clams
Retrieved and
Field Number
from c 14-6- 15-70
from 014-6-15-70
from c 14-6-1 5-70
from c14-6-15-70
from c 14-6- 15 -70
from c 14-6- 15 -70
from c14-6-15-70
from d4-6-15-70
from c14-6-15-70
from C14-6-15-70
from c14-6-15-70
from c 14-6- 15-70
Date
Retrieved
June 29
July 13
July 28
Aug. 10
Aug. 24
Sept. 7
Sept. 21
Oct. 3
Oct. 17
Oct. 31
Nov. 7
Nov. 21
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
<; . 1 ppb
< .1 ppb
"S .1 ppb
ซ? .1 ppb
< .1 ppb
-< . 1 ppb
< .1 ppb
*=: .1 ppb
<; .1 ppb
96 ppb
28 ppb
<: .1 ppb
DDT(PP')
< .1 ppb
< . 1 ppb
542 ppb
< . 1 ppb
>= . 1 ppb
<3 .1 ppb
* .1 ppb
s .1 ppb
b
b
-------
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION:
BOTTOM:
FLOW:
TERRAIN:
TABLE XXVIII
RIVER SThWAKT
apx. one fourth mile upstream from bridge on highway #61.
boulders and rocks in riffle areas, gravel and sand in pools such
as the one where the clams were located.
slow to moderate, occasionally fast.
steep hills and bluffs form banks of river which consists of a series
of riffles and pools.
VEGETATION: Alnus rugosa, Cornus stolonifera, Corylus cornuta, Betula papyrifera,
Abies balsamea, Picea glauca.
-KField
Number
c 15-5-24-70
c 15-6-1 5-70
^ c 15-6-29-70
I1
c1 5-7-13-70
c 15_7_28-70
ci5-8-5-70-d
c 15_8- 10-70
c 15-3-24-70
c 15-9-7-70
c 15-9-2 1-70
c 15-10-3-70
015-10-17-71
Number of
Clams
"Planted"
5
15
Date
"Planted"
May 24
June 1 5
Number of Clams
Retrieved and
Field Number
from c 15-6- 1 5-70
from c 15-6- 15-70
from c15-6-15-70
from c 15-5-24-70
from c 15-6-1 5-70
from c 15-6- 15-70
from c 15-6- 15-70
from c 15-6-1 5-70
from c15-6-15-70
from c 15-6-1 5-70
Date
Retrievec
June 29
July 13
July 28
Aug. 5
Aug. 10
Aug. 24
Sept. 7
Sent. 21
Oct. 3
Oct. 17
Analytical Data
Chlorinated Hydrocarbons
DDT (OP ' )
2.3 ppm
< . 1 ppb
< .1 ppb
NO AL
< .1 ppb
< .1 ppb
< . 1 ppb
ซ .1 ppb
"ซ .1 ppb
-s .1 ppb
DDT(PP')
11.6 ppm
< . 1 ppb
* .1 ppb
ALYSES
< .1 ppb
^ . 1 ppb
*? .1 ppb
< .1 ppb
<$ .1 ppb
ซj .1 ppb
DDE
8.5 ppb
ซ .1 pp
x .1 pp
<: .1 pp
< .1 pp
ซ .1 PI
* -I PI
25 ppb
< .1 p;
Other
D
3
3
)
3 < .05 ppm
(mercury)
i
D
-------
TABLE XXIX
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION:
BOTTOM:
FLOW:
TERRAIN:
RIVER KNIFE
apx. one mile upstream from bridge on highway #61.
exposed basaltic lava flows, boulders and large rocks in rapids
and gravel and sand in the pools.
usually sluggish in the pool where clams located.
high steep banks along river with exposed lava flows, river is a
series of rapids and pools.
VEGETATION: Alnus rugosa, Rubus parviflorus, Betula papyrifera, Acer spicatum,
Thuja occidentalis, Abies balsamea, Picea glauca.
+Field
Number
c 16-5-9-70
c 16-5-24-70
^ c 16-5-24-70
1-0
c 16-6- 14-70
c 16-6-22-70
c 16-6-29-70
c 1 6-6-29-70-
c 16-7- 13-70
c 16-7-28-70
c 16-8- 10-70
c 16-8-24-70
c 16-9-7-70
c 16-9-2 1-70
Number of
Clams
"Planted"
4
1 5
15
7
d
Date
"Planted"
May 9
May 24
May 24
June 14
June 22
Number of Clams
Retrieved and
Field Number
from c 16-5-9-70
from c 16-5-9-70
from 01^6-14-70
from c 16-6-22-70
from c 16-6- 14- 70
from c 16-6-14-70
from c 16-6- 14-70
from c 16-6-22-70
from c 16-6-22-70
from c 16-6-22-70
Date
Retrievec
May 24
May 24
June 29
June 29
July 13
July 28
Aug. 10
Aug . 24
Sent. 7
Sept. 21
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
-------
TABLE XXIX
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER KNIFU (con't)
+Field
Number
016-10-3-70
C16-10-17-70
c 16- 11 -6-70
u>
C16-11-21-70
r* 1 A 19 11 'yn
C16-12-11-70
r> 1 A 19 11 VH
rป 1 A 19 11 VT
C16-12-11-7C
Number of
Clams
"Planted"
-1
-2
-3
-4
-5
Date
"Planted"
Number of Clams
Retrieved and
Field Number
from c 1 ''-6-22-70
from 016-6-14-70
from c 1^-^-1 4-70
from c 16-6- 14-70
from c 16-5-24-70
from c 16-5-24-70
from 016-5-24-70
from c 1^-6-22-70
dashed line
** composite
Date
Retrievec
Oct. 3
Oct. 17
Nov. 6
Nov, 21
Dec. 11
Dec. 11
Dec. 11
Dec. 11
Dec. 11
jidicates n
of samples
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
< .1 ppb
ซ .1 ppb
=: .1 ppb
-i .1 ppb
< ,1 ppb **
-s ,1 ppb **
analysis mad
C16-12-11-70-
DDT(PP')
i .1 ppb
< .1 ppb
c .1 ppb
< .1 ppb
ซJ .1 ppb
< .1 ppb
and -5
DDE
15 PF
< .1 PF
* .1 PF
< .1 PF
< .1 PI
^ .1 PT
Other
b
3
3
b
b
3
-------
RIVER BIG SUCKER
TABLE XXX
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION: 4.00 yds upstream from bridge on highway 61.
BOTTOM: a few exposed basaltic lava flows, large rocks and gravel over most
of river which consists mostly of riffle areas.
FLOW: moderate to fast, occasionally turbulent.
TERRAIN: banks are moderately steep and heavily vegetated.
VEGETATION: Alnus rugosa, Corylus cornuta, Betula papyrifera, Acer spicatum,
Thuja occidentalis, Abies balsamea, Picea glauca, Populus tremuloides
+Field
Number
c 17-5-24-70
c 17-6- 14-70
^ c 17-6-22-70
c 17-6-29-70
c 17-6-29-70-
c17_7-13-70
c 17-7-28-70
c 17-8- 10-70
c 17-8-24-70
c 17-9 -7-70
017-9-21-70
C17-10-3-70
c17-10-17-7(
Number of
Clams
"Planted"
5
15
15
I
Date
"Planted"
May 24
June 14
June 22
Number of Clams
Retrieved and
Field Number
from c 17-6-22-70
from c 17-6-22-70
from c 17-6-22-70
from c 17-6-22-70
from c 17-6-22-70
from c 17-6-22-70
from c 17-6-22-70
from c 17-6-22-70
from c 17-6-22-70
from c 17-6-22-70
Date
Retrieved
June 29
June 29
July 13
July 28
Aug. 10
Aug. 24
Sept. 7
Sept. 21
Oct. 3
Oct. 17
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
2 ppm
48 ppb
<2 .1 ppb
< .1 ppb
170 ppb
EXTRACT
-=j .1 ppb
{ .1 ppb
DDT(PP')
< .1 ppb
< . 1 ppb
1 .48 ppm
ซ . 1 ppb
285 ppb
LOST
< . 1 ppb
-<: .1 ppb
"* .1 ppb
*s .1 ppb
DDE
170 ppb
2 ppb
< .1 pi
25 ppb
6 ppb
-s .1 pi
< .1 p
16 ppb
< .1 p
Other
b
b
>b
A
-------
TABLE XXX
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER BIG ;JUCKKK (con't)
+Field
Number
C17-1 1-7-70
c17-11-21-70
i-> 1 7 1 ? 11 vr
_n
c17-12-11-7L
/> 1 *7 19 11 ^r
- -i 7 -19 11 or-
n 1 "7 19 11 n(
^ 1 7 19 11 7f
rv 1 *7 19 11 H\
--1-7 -i ") -1 1 ป7/
G17_12-11-7(
c17_12-11-7(
Number of
Clams
"Planted"
-1
-2
*3
-JJ
-4
r
5
A
-7
-8
Q
y
-10
Date
"Planted"
Number of Clams
Retrieved and
Field Number
from c 17-^-22-70
from c 17-6- 14-70
or c 17-5-24-70
fVnm r>17 A 1/ 7O
or c 17- 5-24-70
from c 17-6-14-70
or c 17-5-24-70
f r> oin r> 1 7 A 1 / VO
or 5-24
frปrMn r> 1 *7 A 1 / 70
or 5-24
j?^ r- 1 7 A 1 / VO
or 5-24
from r-17 f. 1/-70
or 5-24
-pr>nrn - -1^7 ^ -1 i 7A
or 5-24
from r17 ^ 1/ 70
or 5-24
from c 17-6- 14-70
or 5-24
from c 17-6- 14-70
or 5-24
Date
Retrieved
Nov. 7
Nov. 21
Dec. 11
Dec. 11
Dec. 11
Dec. 11
Dec. 11
Dec. 11
Dec. 11
Dec. 11
Dec. 11
Dec. 11
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
-------
TABLE XXX
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER BIG SUCKER (con't)
+Field
Number
CT7-12-11-7
c17-12-1l-7
S
Number of
Clams
"Planted"
-11
-12
Date
"Planted"
Number of Clams
Retrieved and
Field Number
from c 17-6- 14-70
or 5-24
from c 17-6 -14-70
or 5-24
dashed line d
** composite
Date
Retrieved
Dec. 11
Dec. 11
ndicates nc
of samples
Analytical Data
Chlorinated Hydrocarbons
DDT COP1)
? .1 ppb **
analysis made
c17-12-11-70-i
DDT(PP')
*s .1 ppb
, -9, -10 and
DDE
*s .1 pp
-11
Other
D
-------
RIVER SCHMIDT CHEEK
TABLE XXXI
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION: 400 ft. upstream from bridge on highway #61
BOTTOM:
FLOW:
TERRAIN:
exposed lava flows (basaltic) with some gravel and rocks in pools.
usually sluggish, fast occasionally and stagnant during dry weather.
steep banks and exposed lava flows form banks, rather rugged relief,
river is a series of pools traped behind lava flows.
VEGETATION: Alnus rugosa, Betula papyrifera, Thuja occidentalis, Abies balsamea,
Taxus canadensis, Picea glauca.
--Field
Numb e r
c 13-5-24-70
dS-6-15-70
^ c 18-6-29-70
c 18-7-13-70
c18-7-2S-70
d3_8_10-70
c 18-8-24-70
c 18-9-7-70
c18-9-21-70
dS-10-3-70
G18-10-17-7(
dS-10-31-7(
c 18-1 1 -7-70
Number of
Clams
"Planted"
5
15
Date
"Planted"
Hay 24
June 1 5
Number of Clams
Retrieved and
Field Number
from d 3-6- 15-70
from c 18-6-1 5-70
from c 18-6- 15-70
from d' '-6-1 5-70
from c 18-6-1 5-70
from dS-6-15-70
from d8-6-15-70
from c 18-6- 15 -70
from d 8-6- 15-70
from c18-6-15-70
from c 18-6- 15 -70
Date
Retrieved
June 29
July 13
July 28
A.US; . 1 0
Aup;. 24
Sept. 7
Sept. 21
Oct. 3
Oct. 17
Oct. 31
Nov. 7
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
EXTRACT
< . 1 ppb
< . 1 ppb
172 ppb
< .1 ppb
< .1 ppb
<: .1 ppb
-!j .1 ppb
< .1 ppb
49 ppb
< .1 ppb
DDT(PP')
LOST
< .1 ppb
< .1 ppb
294 ppb
< .1 ppb
ซ; . 1 ppb
t .1 ppb
s .1 ppb
< .1 ppb
< .1 ppb
ซซ .1 ppb
DDE
< .1 PF
< .1 PF
10 ppb
"* .1 PI
ซ .1 pi
T .1 pt
< .IFF
^ .1 PI
26 ppb
45 -1 PI
Other
3
b
D
3
D
3
3
D
-------
TABLE XXXI
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER SCHMIDT GRKKK (con't^
+Field
Number
dS-11-21-7
clS- 12-1 1-7
c13-12-11-7
00
clS-12-1 1-7Q
C18-12-11-7C
C13-12-11-7C
C13-12-11-7C
C18-12-11-7C
Number of
Clams
"Planted"
-1
-2
-3
-4
-5
-6
-7
Date
"Planted"
Number of Clams
Retrieved and
Field Number
from c 18-6- 15-70
xrom dc-5-24-70
from c 18- 5 -24-70
from c 18-5-24-70
from cl8 5 24-70
from c18-6-15-70
from c18-6-15-70
from c 18-6- 15-70
dashed line
** composite
Date
Retrievec
Nov. 21
Dec . 1 1
Dec. 11
Dec . 11
Dec. 11
Dec. 11
Dec. 11
Dec. 11
_ndicates n
of samples
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
< .1 ppb
ซs .1 ppb **
< .1 ppb **
-c .1 ppb **
analysis mad
c 18- 12- 11 -70-
DDT(PP')
< .1 ppb
< .1 ppb
ซ: .1 ppb
< .1 ppb
, -5, and -7
DDE
*? .1 PP
<: .1 pฃ
* -1 PI
<: .1 p]
Other
D
3
b
ib
-------
RIVER Kitiv Gil
TABLE XXXII
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION: 200 ft. upstream from bridge on Old North Shore Road.
BOTTOM:
FLOW;
TERRAIN:
rocks and gravel, a few small boulders.
usually slow to moderate current.
steep banks, but not very high, eroded in some locations, river is
mostly a continuous series of riffles.
VEGETATION: Alnus rugosa, Betula papyrifera, Abies balsamea, Picea glauca,
Populus tremuloides.
+Field
Numb e r
c 19-5-24-70
c19_6-15_70
d9_6-29-70
^J
cl9_7_13_70
c 19_7_28_70
c19_8-10-70
c 19-8-24-70
C19_9_7_70
C19_Q_21-70
c19_10-3-70
C19_10-17-7i
cig_10_31-7
c 19- 11 -7-70
Number of
Clams
"Planted"
5
15
Date
"Planted"
l-b.y 24
June 15
Number of Clams
Retrieved and
Field Number
from c 19-6-1 5-70
from c19-6-15-70
from c 19-6-1 5-70
from c19-6-15-70
from c19-6-15-70
from c 19-6-1 5-70
from c 19-6- 15-70
from c 19-6- 15-70
from c 19-6- 15-70
from c 19-6- 15 -70
from c19-6_15_70
Date
Retrievec
June 29
July 13
July 23
Aug. 10
Aug. 24
Sept. 7
Sept, 21
Oct. 3
Oct. 17
Oct. 31
Nov. 7
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
9.2 ppm
410 ppb
< . 1 ppb
22 ppb
< .1 ppb
< . 1 ppb
ซs .1 ppb
< .1 ppb
40 ppb
86 ppb
< .1 ppb
DDT(PP')
c . 1 ppb
2.08 ppm
<: . 1 ppb
222 ppb
< .1 ppb
<. . 1 ppb
ซs .1 ppb
<; .1 ppb
151 ppb
301 ppb
"S .1 ppb
DDE
*s -1 PP
12 ppb
< .1 pt
< . 1 PI
< .1 PI
< -1 PI
<: .1 pj
102 ppl
27 ppb
c .1 p
< .1 p
Other
b
b
b
D
D
3
3
D
-------
TABLE XXXII
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER FRENCH (
con
-t)
+Field
Number
c19_11_21-7
e19_12-11-7
^ c19-12-11-7
0
Number of
Clams
"Planted"
-1
-2
Date
"Planted"
Number of Clams
Retrieved and
Field Number
from c 19-6-1 5-70
from c19-6-15-70
from c19-6-15-70
** composite
Date
Retrieved
Nov. 21
Dec. 11
Dec. 11
of sample s
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
< .1 ppb
< .1 ppb **
* .1 ppb **
c 19-12- 11 -70-
DDT(PP')
ซ! .1 ppb
< .1 ppb
-------
TABLE XXXIII
CLAM SAMPLE - RIVER TALMADGE
SITE DESCRIPTION:
LOCATION: 300 yds upstream from bridge on highway #61.
BOTTOM:
FLOW:
TERRAIN:
exposed basaltic lava flows, gravel and rocks, a few small boulders.
usually slow to sluggish, however during dry weather the river
dried up except for a few stagnant pools.
banks are quite level, the river is a series of riffles and a few
small, shallow pools.
VEGETATION: Alnus rugosa, Corylus cornuta, Betula papyrifera, Populus tremuloides
Populus balsamifera, Abies balsamea, Taxus canadensis.
+Field
Number
C20-5-24-70
c20-6-15-70
c20-6-29-70
JO
c20-7-13-70
c20-7-28-70
C20-8-10-70
c20-8-24-70
c 20-9-7-70
c20-9-21-70
c20-10-3-70
c20-10-17-7(
c20-10-31-7(
C20-1 1-7-70
Number of
Clams
"Planted"
5
15
Date
"Planted"
May 24
June 15
Number of Clams
Retrieved and
Field Number
from C20-6- 15-70
from C20-6-15-70
from 020-^-15-70
from C20-6-15-70
from c20-6- 15-70
from c20-6- 15-70
from C20-6-15-70
from c 20-6- 15 -70
from C20-6-15-70
from c20-6-15-70
from cpO-6- 15-70
Date
Retrieved
June 29
July 13
July 28
Aug. 10
Aug. 24
Sept. 7
Sept. 21
Oct. 3
Oct. 17
Oct. 31
Nov. 7
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
2 . 1 ppm
188 ppb
51 ppb
62 ppb
< .1 ppb
< . 1 ppb
< .1 ppb
-------
TABLE XXXIII
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER TALMADGE (con't)
+Field
Number
C20-1 1-21-7
CO
K)
Number of
Clams
"Planted"
Date
"Planted"
Number of Clams
Retrieved and
Field Number
from c20-5-24-70
Date
Retrieved
Nov. 21
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
*< .1 ppb
DDT(PP')
< .1 ppb
DDE
< .1 PP
Other
3
-------
RIVER LESTER
TABLE XXXIV
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION: just off Lester River Road at first turn-off beyond golf course.
BOTTOM: exposed basaltic lava flows, boulders and rocks in rapids, gravel
in pools.
FLOW: slow to sluggish, occasionally very fast.
TERRAIN: banks consist mostly of bare rock ledges and bluffs, the river is
a series of pools in low spots of lava flows connected by rapids.
VEGETATION: Alnus rugosa, Betual papyrifera, Populus tremuloides, P. balsamifera,
P. grandidentata. Prunus virginiana.
+Field
Number
C22-5-26-70
022-6-14-70
c22-6-29-70
U)
C22-7-13-70
c22-7-28-70
C22-8-10-70
c22-8-24-70
C22-9-7-70
c22-9-21-70
c22-10-3-70
c22-10-17-7(
C22-1 1-6-70
c22-11-21-7<
Number of
Clams
"Planted"
5
15
Date
"Planted"
May 26
June 14
Number of Clams
Retrieved and
Field Number
from c22-6-14-70
from c22-6-14-70
from c22-6-14-70
from c22-6-14-70
from c22-6-14-70
from c22-6-14-70
from c22-6-14-70
or c22-5-26-70
from c22-6-14-70
or 5-26
from c22-6-14-70
or 5-2.6
from c22-6-14-70
or 5-26
from c22-6-14-70
r- /-, /
Date
Retrieved
June 29
July 13
July 28
Aug. 10
Aug. 24
Sept. 7
Sept. 21
Oct. 3
Oct. 17
Nov. 6
Nov. 21
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
< . 1 ppb
78 ppb
< . 1 ppb
119 ppb
34 ppb
< . 1 ppb
63 ppb
< .1 ppb
19 ppb
26 ppb
-5 .1 ppb
DDT(PP')
6 ppm
437 ppb
< . 1 ppb
< . 1 ppb
? .1 ppb
< .1 ppb
23 ppb
3 .1 ppb
78 ppb
=3 .1 ppb
-ซ .1 ppb
DDE
< .1 PF
6 ppb
< .1 PF
30 ppb
* .1 PI
ซ .1 PI
5 ppb
* .1 PI
< .1 p
21 ppb
-* .1 p
Other
3
3
3
3
3
3
3
-------
TABLE XXXIV
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER LESTER (con't)
+Field
Number
c22-12 11 7
C22-12-11-7
C22-12-1 1-7
c22-12-11-7
CtCd \t!- I I I
Number of
Clams
"Planted"
-1
_2
-4
-5
Date
"Planted"
Number of Clams
Retrieved and
Field Number
from c22-6-14-70
or c22-5-26-70
from C22-6-14-70
or 5-26
irom c22-o-14-/0
or 5-26
from C22-6-14-70
or 5-26
irom c ฃ..<. D 1 4. /u
or 5-26
dashed line 3
** composite
Date
Retrievec
Dec. 11
Dec. 11
Dec . 1 1
Dec. 11
Dec. 11
ndicates ru
of samples
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
s: .1 ppb **
< .1 ppb **
analysis mad(
022-12-11-70-
DDT(PP')
ซ .1 ppb
ซ=: .1 ppb
2 and -L,
DDE
28 ppb
28 ppb
Other
-------
TABLE XXXV
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER ST. LOUIS(U;>PKR)
LOCATION: apx. one fourth mile above bridge on highway #2-
BOTTOM:
FLOW:
TERRAIN:
mostly mud and sand, a few large boulders.
usually very slow to sluggish.
banks are only moderately steep and the total relief is quite level,
the river flows smoothly thru this area with a minor rapids below.
VEGETATION: Corylus cornuta, Betula papyrifera, Fra3cinus nigra, Salix sp.
+Field
Number
c23-5-26-70
C23-6-14-70
c23-6-29-70
CO
Ul
C23-7-13-70
c23-7-26-70
c23-8-10-70
c 23 -8-24-70
C23-9-7-70
C23-9-21-70
c23-10-3-70
c23-10-17-7<
c23-10-31-7
c23-11 -7-70
Number of
Clams
"Planted"
5
15
Date
"Planted"
May 26
June 14
Number of Clacns r
Retrieved and
Field Number
from c 23-6- 14-70
from C23-6-14-70
from C23-6-14-70
from 023-6-34-70
from C23-6-14-70
from c 23-6- 14-70
from 023-6-14-70
from c23-6-14-70
from c23-6-14-70
from 023-6-14-70
from C23-6-14-70
jpulus tren
Date
Retrievec
June 29
July 13
July 26
Aug. 10
Aug. 24
Sept. 7
Sept. 21
Oct. 3
Oct. 17
Oct. 31
Nov. 7
uoiflea, P.imisanirฃฃ|lyttcal Data
Chlorinated Hydrocarbons
DDT (OP ' )
950 PPb
68 ppb
< . 1 ppb
202 ppb
27 ppb
ซ? .1 ppb
14 ppb
< .1 ppb
ซ .1 ppb
85 ppb
25 ppb
DDT(PP')
2.8 ppm
434 ppb
< .1 ppb
*ซ: .1 ppb
140 ppb
<ฃ . 1 ppb
19 ppb
< .1 ppb
88 ppb
220 ppb
64 ppb
DDE
6.5 ppb
8 ppb
^ -1 PF
55 ppb
< .1 PI
-= .1 PI
1 PPb
< .1 PI
< -1 PI
i .1 p;
25 ppb
Other
3
)
1
Eg -s .05 ppm
3
D
3
-------
TABLE XXXV
CLAM SAMPLE - RIVER ST . LOUIS(UPPER) (con't'
SITE DESCRIPTION:
+Field
Number
c23-1 1-21-7
0)
Number of
Clams
"Planted"
Date
"Planted"
Number of Clams
Retrieved and
Field Number
from c23-6-14-70
Date
Retrievec
Nov. 21
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
ซ3 .1 ppb
DDT(PP')
-
-------
TABLE XXXVI
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION:
BOTTOM:
FLOW:
TERRAIN:
RIVER ST. LOIJIS(LUWEK)
Billings Park, Superior, at end of point by swimming beach.
rock and muck.
usually very sluggish except for wave action.
high bluffs along river which is very wide at this point, location
is below many of the major industries on the river.
VEGETATION: mowed grass along a brick wall, a few Acer negundo.
+Field
Number
c 24-6- 14-70
024-6-29-70
OD c 24-7- 13-70
024-7-26-70
c 24-8- 10-70
c 24-8-24-70
024-9-7-70
c24-9-21-70
c24- 10-3-70
c24-10-17-7.(
c 24-1 0-3 1-7(
c24-11-7_70
c24-11-21-7<
Number of
Clams
"Planted"
15
Date
"Planted"
June 14
Number of Clams
Retrieved and
Field Number
from 024-6-14-70
from 024-6-14-70
from 024-6-14-70
from c:;'4-6-14-70
from c 24-6- 14-70
from C24-6-14-70
from C24-6-14-70
from C24-6-14-70
from 024-6-14-70
from C24-6-14-70
from 024-6-14-70
from 024-6-14-70
Date
Retrieved
June 29
July 13
July 26
Aug. 10
Aug. 24
Sept. 7
Sept. 21
Oct. 3
Oct. 17
Oct. 31
Nov . 7
llov. 21
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
-------
TABLE XXXVII
CLAM SAMPLE - RIVER NEMADJI(UPPER)
SITE DESCRIPTION:
LOCATION: 200 ft. upstream from bridge on Douglas County Rd C.
BOTTOM:
FLOW:
TERRAIN:
clay and silt.
usually slow, occasionally moderate, river is very turbid and silty.
banks are steep and eroded red clay, a broad flood plain borders
the river.
VEGETATION: Salix interior, S. sp., Fraxinus nigra.
+Field
Number
c25-5-26-70
c25-6-14-70
025-6-29-70
co
c25-7-13-70
c25-7-26-70
c25-8-10-70
C25-8-24-70
025-9-7-70
c25-9-21-70
c25-10-3-70
c25-10-17-7(
025-10-31-7
025-11-7-70
Number of
Clams
"Planted"
5
15
Date
"Planted"
May 26
June 14
Number of Clams
Retrieved and
Field Number
from c25-6-14-70
from c25-6-14-70
from c25-6-14-70
from c25-6-14-70
from 025-6-14-70
from c25-6-14-70
from c25-6-14-70
from c25-6-14-70
from c25-6-14-70
from 025-6-14-70
from c25-6-14-70
Date
Retrieved
June 29
July 13
July 26
Aug. 10
Aug. 24
Sept. 7
Sept. 7
Oct. 3
Oct. 17
Oct. 31
Nov. 7
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
141 ppb
61 ppb
< .1 ppb
106 ppb
< .1 ppb
-< .1 ppb
"2 .1 ppb
< .1 ppb
ซ3 .1 ppb
*: ! ppb
ซ; .1 ppb
DDT(PP')
1 . 37 ppm
510 ppb
e ,1 ppb
106 ppb
^ .1 ppb
< .1 ppb
< .1 ppb
-s .1 ppb
-3 .1 ppb
ซe .1 ppb
^ .1 ppb
DDE
56.5 pp
7 ppb
ซs .1 pi
19 ppb
< .1 PI
-ซs .1 pi
* -1 P!
< .1 PI
<ซ .1 P]
< .1 p]
-ซ .1 P:
Other
D
b
b
b
b
ib
ib
b
>b
-------
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION:
BOTTOM:
FLOW:
TERRAIN:
TABLE XXXVIII
RIVER IMEMAUJI(LOWER)
300 yds upatream from bridge on highway ^53 in Douglas County.
clay and silt.
sluggish and very turbid and silty .
very level swampy area borders river, the banks are not as badly
eroded in this location as further upstream.
VEGETATION: Alnus rugosa, Cornus stolonifera, Viburnum trilobum, Rubus strigosus
Prunus virginiana, Populus balsamifera, Fraoinus nigra.
fField
Number
026-6-16-70
c26-6-29-70
c26-7-13-70
CO
o26-7-26-70
026-8-10-70
o 26-8-24-70
026-9-7-70
c26-9-21-70
o26-10-3-70
c26-10-17-7<
c26-10-31-7<
c26-11-7-70
c26-11-21-7
Number of
Clams
"Planted"
15
Date
"Planted"
June 16
Number of Clams
Retrieved and
Field Number
from 026-6-16-70
from 026-6-16-70
from c26-6- 16-70
from 026-6-16-70
from C26-6-16-70
from c26-6- 16-70
from C26-6-16-70
from C26-6-16-70
from C26-6-16-70
from c26-6- 16-70
from C26-6-16-70
from C26-6-16-70
Date
Retrievec
June 29
July 13
July 26
Aug. 10
Aug. 24
Sept. 7
Sept. 21
Oct. 3
Oct. 17
Oct. 31
Nov. 7
Nov. 21
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
312 ppb
56 ppb
c . 1 ppb
120 ppb
^ .1 ppb
-ซ; . 1 ppb
1.02 ppm
ซs .1 ppb
< .1 ppb
26 ppb
-s .1 ppb
< .1 ppb
DDT(PP')
5.9 ppm
557 ppb
< . 1 ppb
115 ppb
ซ? . 1 ppb
ซs . 1 ppb
5 ppm
s .1 ppb
s .1 ppb
46 ppb
<: .1 ppb
-------
TABLE XXXVIII
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER NEMAD JI( LO WER) (c on't}
+Field
Numb e r
c26-12-11-7
c26-12-11-7
V13
O
Number of
Clams
"Planted"
-1
9
-3
Date
"Planted"
Number of Clams
Retrieved and
Field Number
from C26-6.-16-70
-p-n^m n9(^, ฃ 1A 'VH
from c 26-6- 16-70
dashed line i
** composite
Date
Retrieved
Dec. 11
T)or> 1 1
Dec. 11
ndicates nc
of samples
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
32 ppb **
32 ppb **
analysis made
C26-12-11-70-
DDT(PP')
42 ppb
42 ppb
1 and -3
DDE
< .1 pp
"ซ .1 PF
Other
3
3
-------
CLAM SAMPLE -
SITE DESCRIPTION:
LOCATION:
BOTTOM:
TERRAIN:
FLOW:
VEGETATION:
TABLE XXXIX
RIVER MISSISSIPPI (CONTROL)
Deer River, Minnesota.
+Fleld
Number
1cx-5-3-70
2cx-5-3-70
3cx-5-3-70
4cx-5-3-70
5cx-5-3-70
6cx-5-3-70
7cx-5-3-70
8cx-5-3-70
9cx-5-3-70
IOcx-5-3-70
11cx-5-3-70
12CX-6-8-70
13cx-6-8-70
Number of
Clams
"Planted"
Date
"Planted"
Number of Clams
Retrieved and
Field Number
Date
Retrievec
May 3
May 3
May 3
May 3
May 3
May 3
May 3
May 3
May 3
May 3
May 3
June 8
June 8
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
< .01 ppm
.4 ppm
.02 ppm
.02 ppm
.01 ppm
.01 ppm
.07 ppm
.03 ppm
.25 ppm
.04 ppm
.02 ppm
3.25 ppb
< .01 ppb
DDT(PP''ป
< .01 ppm
.2 ppm
.02 ppm
. 0 1 ppm
ซs .01 ppm
. 0 1 ppm
.05 ppm
.02 ppm
.50 ppm
. 1 0 ppm
.09 ppm
14.75 ppb
"3 .01 ppb
DDE
< .01 p
c .01 p
< .01 p
<: .01 p
< .01 p
s .01 p
-5 .01 i
.50 ppn
.30 ppn
< .01 i
* .01 i
1.25 p]
s .01
Other
-jm
'jm
om
pm
pm
pm
pm
nm
m
i
ob
-------
TABLE XXXIX
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER MISSISSIPPI (CONTROL) (con't)
+Field
Number
14cx-6-8-70
15cx-6-8-70
l6cx-6-8-70
3 17cx-6-8-70
l8cx-6-8-70
19cx-6-8-70
20cx-6-8-70
21cx-6-8-70
22cx-6-8-70
23cx-6-8-70
24cx-6-8-70
25cx-6-8-70
26cx-6-8-70
Number of
Clams
"Planted"
Date
"Planted"
Number of Clams
Retrieved and
Field Number
Date
Retrievec
June 8
June 8
June 8
June 8
June 8
June 8
June 8
June 8
June 8
June 8
June 8
June 8
June 8
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
100 ppb
< .01 ppb
< .01 ppb
< .01 ppb
<: .01 ppb
0.9 ppb
60.7 ppb
0.4.0 ppb
pb
>b
>b
.pb
-------
TABLE XXXIX
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER MISSISSIPPI (CONTROL) (con't)
+Field
Number
27cx-6-8-70
28cx-6-8-70
29cx-6-8-70
^ 30cx-6-8-70
31cx-6-8-70
32cx-6-8-70
33cx-6-8-70
34cx-6-8-70
35cx-6-8-70
36cx-6-8-70
37cx-6-8-70
38cx-6-8-70
39cx-6-12-7
Number of
Clams
"Planted"
Date
"Planted"
Number of Clams
Retrieved and
Field Number
Date
Retrievec
June 8
June 8
June 8
June 8
June 8
June 8
June 8
June 8
June 8
June 8
June 8
June 8
June 12
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
17.7 ppm
165.0 ppb
163.3 ppb
137.9 ppb
164.2 ppb
69.3 ppb
< .01 ppb
180.4 Ppb
190 ppb
138.8 ppb
795.5 ppb
300.0 ppb
< . 1 ppb
DDT(PP')
21.1 ppm
151.4 ppb
387.0 ppb
297.7 ppb
776.5 ppb
505.5 ppb
143.2 ppb
478.6 ppb
1.08 ppm
ซ .01 ppb
< .01 ppb
90S ppb
.5 ppm
DDE
4.2 pp
19.4 P
5.8 ppt
15.4 P
14.6 p
< .01 i
< .01 i
-s .01 i
17.9 PI
14.6 P]
C .01 ;
ซ .01
-ซ .1 p
Other
D
b
b
pb
pb
pb
:>
3
pb
pb
b
-------
TABLE XXXIX
CLAM SAMPLE -
SITE DESCRIPTION:
RIVER MISSISSIPPI (CONTROL) (con't)
-f-Field
Number
40cx-6-12-7
41cx-6-12-7
42cx-6-12-7
ฃ 43cx-6-12-7
44cx-6-12-7
45cx-6-26-7(
46cx-6-26-7(
47cx-6-26-7C
48cx-6-26-7(
49cx-6-26-7(
50cx-6-26-7(
51cx-6-26-7(
Number of
Clams
"Planted"
Date
"Planted"
Number of Clatns
Retrieved and
Field Number
Date
Retrieved
June 12
June 12
June 12
June 12
June 12
June 26
June 26
June 26
June 26
June 26
June 26
June 26
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
< .1 ppb
< .1 ppb
< . 1 ppb
-< . 1 ppb
< .1 ppb
< .1 ppb
< .1 ppb
17 ppb
42 ppb
4 .1 ppb
24 ppb
46 ppb
DDT(PP')
< .1 ppb
<* .1 ppb
< .1 ppb
x .1 ppb
1 ppm
"5 . 1 ppb
< .1 ppb
178 ppb
-------
RIVER ST. LOUIS (UPPER)
TABLE XXXX
CLAM SAMPLE - NATIVE CLAMS
SITE DESCRIPTION:
LOCATION: apx one fourth mile above bridge on highway #2.
BOTTOM: mostly mud and sand, a few large boulders.
FLOW; usually very slow to sluggish.
TERRAIN: banks are only moderately steep and the total relief is quite level,
the river flows smoothly thru this area with a minor rapids below.
VEGETATION: Corylus oornuta, Betula papyrifera, Fraxinus nigra, Salix sp.,
Populus tremuloides, P. balsamifera.
+Field
Number
C23-7-10-70-
C23-7-10-70-
C23-7-10-70-
Oi
C23-7-10-70-
c23-7- 10-70-
C23-7-10-70-
C23-7-26-70-
C23-7-26-70-
C23-7-26-70-
C23-8-10-70-
C23-8- 10-70-
C23-8-10-70-
c 23 -8-24-70-
Number of
Clams
"Planted"
1
?
3
i
4-
5
6
7
8
9
10
11
12
13
Date
"Planted"
Number of Clams
Retrieved and
Field Number
native clam #1
native clam #2
native clam #3
native clam #4
native clam #5
native clam #6
native clam #7
native clam #8
native clam #9
native clam #10
native clam #11
native clam #12
native clam #13
Date
Retrievec
July 10
July 10
July 10
July 10
July 10
July 10
July 26
July 26
July 26
Aug. 10
Aug. 10
Aug. 10
Aug. 24
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
130
46
27
52
130
80
54
DDT(PP')
700
260
93
241
249
770
610
DDE
1
*1
30
18
<1
12
35
Other (Aldrin)
410
10670
270
290
700
62
57
-------
TABLE .XXXX[
CLAM SAMPLE - NATIVE CLAMS
SITE DESCRIPTION:
RIVER ST. LOUIS (UPPER) (con't)
4-Field
Number
C23-8-24-70
023-8-24-70
C23-9-7-70-
VD
C23-9-7-70-
C23-9-7-70-
C23-9-21-70-
c23-9-21-70-
C23-9-21-70-
C23-10-3-70-
C23- 10-3-70-
C23-10-3-70-
Number of
Clams
"Planted"
14
15
j
7
3
19
10
2;1
22
3
24
Date
"Planted"
Number of Clams
Retrieved and
Field Number
native clam #14
native clam #15
native clam #16
native clam #17
native clam #18
native clam #19
native clam #20
native clam #21
native clam #22
native clam #23
native clam #24
Date
Retrievec
Aug. 24
Aug. 24
Sept. 7
Sept. 7
Sept. 7
Sept. 21
Sept. 21
Sept. 21
Oct. 3
Oct. 3
Oct. 3
Analytical Data
Chlorinated Hydrocarbons
DDT (OP1)
28
140
180
60
78
34
190
30
110
74
910
DDT(PP')
210
340
340
300
370
210
240
456
460
1630
DDE
4
75
87
16
10
2
15
56
15
1
105
Other (Aldrin)
52
145
382
527
58
13
186
338
36
139
< 1
-------
TABLE XXXXI
Q'",V ' ^v ri~?
O w*W-*^V OJ
J
i Clam
; Category
I
: Control
1(5146-5147)
I
1
i Field
i Numbers
lcx-5-5-70
to
: l lcx-5-5-70
Control
, (5282)
1
Field
i Numbers
12cx-6-8~7Q
1 to
!58cx-6-8-70
$
i
i
:
'
Spscir^-n
A XilL.4.3 <ฃ .**
i
2
^
s
4
5
6
7
8
9
10
11
12X-1
15X-2
14X-5
15X-4
16X-5
17-X-6
18X-7
19X-1-8
20X-9
21X-10
22X-11
25X-12
24X-15
2JX-14
26X-15
27X-16
2SX-17
29X-18
50X-19
51X-20
52X-21
55X-22
54x-25
2 C VO/l
55X-24
56X-25
57X-26
58X-27
^pril - "Dacc^.b-1"
1970
s
Species
t
Lampsilis ventricosa \
\
\
Ligumia recta
Lampsilis ventricosa
Lampsilis siliquoidea
Ligumia recta
Lampsilis ventricosa
Lampsilis siliquoidea
Ligumia recta
Lampsilis siliquoidea
Lampsilis ventricosa
Lampsilis siliquoidea
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Lampsilis siliquoidea
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Lampsilis ventricosa
Lampsilis siliquoidea
Ligumia recta
Lampsilis siliquoidea
.
Ligumia recta
i
3
?
Nuniber
Q-:
Growth Hire-
10
16
, ,
16
11
11
44
11
11
11
10
8
12
17
10
10
15
10
15
10
10
1 17
i 9
11
! 15
11
I 12
12
15
14
11
11
12
i ii
14
12
11
10
8
15
*
/
>
Weight
(Grains) j
?
65 !,
79 I
-7-7 I
11
42.6 |
41.7 1
52.7 !
52.0 ;
5L5 i
52.0 i
28.5 I
11.5 i
25 .0 j
77-2
20.0 i
19.4 !
cc e~\
55'9
26.6 j
24.6 S
| 20.5
i 48.5
: -,/-- ? i
75*5 i
25.7 1
27.2
! 51-7
SQ -?
00.5
45.9 I
\ 2Q.9 ]
z A r\ '
\ 50.o j
! 55.5 1
j O/i "7 \
\ 24 ซ7 I
1 40.2 \
\ 18.8 j
i i
1 liQ Q '
Hy.y
25.1
i 16.8
i 19.4
i 14.6
ป y r\
15.0
97
-------
TABLE XXXXI
0? AGE, T;2IG>:i
0? CLAl-S
SPSCI2S
Category
; Control
; (5872) ;
i
| Field :
A'umbe rs i
59cx-6-12~70
44gx-6-12-7(J
Control ;
(6756) !
j
Field j
Numbers !
to
51 cx-6 -26-70
S^3c-::s-
1-59X
2-40X
5 -4 ix
4-4 2x
5-4JX
6-Jf4x
45Cx
46cx
47CX
48CX
49CX
5ocx
5icx
Spscios
Lampsilis ventricosa
Ligumia recta
Lampsilis siliquoidea
Lampsilis ventricosa
Ligumia recta
Lampsilis ventricosa
Lampsilis siliquoidea
Lampsilis ventricosa
Ligumia recta
Lampsilis ventricosa
i Nimber
' of :
i 19
11
1 is i
! 10 i
i 10
! 10 '
\ ;
'{;
11
11
i 10 \
\ 11 i
1 11 i
1 14 ;
i
Weight
(Grass)
^ V^r.4. Af-il-i J
41.8
24.7
27.8
17.Q
27.2
29.4
55 ป5
55-5
55-9
20.2
58.4
55.0
44.5
98
-------
TABLE XXXXI
ARY o? AGE, WEIGH?, AND SPECIES
1970
Clam
Category
i Experimental
: Lab #154
<
:
Field
Numbers
1-8-25-70
to
26-6-24-70
i
Experimental
Lab #6755 I
B
j
i
I
r
t
Field j
i Numbers i
i 01 -6-50-70 ]
( to {
!C26a-6-29-7
i
i
}
1
j
Specimen
Nxaibei'
0-1
0-2
G-5(b)
C-4(e)
C-6(b)
C-7(o)
C-6(a)
0-9 (a)
C-10(b)
C-ll(a)
0-12
0-15
C-14
C-15(a)
0-16 (b)
C-l7(b)
C-18(a)
0-19(a)
0-20 (b)
C-22(a)
0-25
0-24
0-25
0-26 (a)
0-1
0-2
C-5(a)
0-4
C-6(a)
C-7(a)
0-6
C-9(a)
C-10(a)
C-ll(a)
0-12
0-15
c-l4
0-15 (a)
C-l6(b)
0-16 (b2)
c-l7(bl)
C-17(b5):
Specicc
Lampsilis siliquoidea
Lampsilis ventricosa
Ligumia recj&a
Lampsilis ventricosa
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Lampsilis ventricosa
Lampsilis siliquoidea
Ligumia recta
Lampsilis siliquoidea
Lampsilis ventricosa
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Lampsilis ventricosa
Ligumia rectia
Lampsilis ventricosa
Lampsilis siliquoidea
Ligumia recta
Lampsilis siliquoidea
oi'
11
: 12
i 19
i 12
' 12
16
: 12
16
i 12
! 14
i 16
15
15
16
12
12
15
15
12
s 12
' 15
I 14
; 16
12
! 12
12
: 12
i 12
i 15
12
11
12
11
11
16
15
16
16
i 15
10
1 10
\
Weighs
(Oa-^)
i" v^-1 /
19.0
44.5 j
55-5
25.0
25.0
' 26.5
51.5
48.0
55-0 i
51.0
i 26.0
55.0
55-5
18.0
20.5
18.0
47.0
52.0
17.0
: 25.0
17.0
42.0
21.0
I 27.0
i 29.0
1 25'5
\ 28.0
i 64.7
; 52.0
26.0
! 52.0
! *J-5
I 26.0
45.7
24.1
55.1
28.8
14 -7
50.9
10.5
17.8
7-0
. j
99
-------
TABIB XXXXI
OF AGE, WSIffiHT, 41ฉ SfSCIES
April. - December-
1970
1
(Elara
Experimental,
Lab #6755 |
i
!
i
V
!
Expe r ime n ta 1
Lab #7655
Field
Numbers
1-7-14-70 '
to
26 a -7 -15 -70
.
Sxperimental
Lab #5855
Field i
numbers i
C2-11-1-70
to
C26a-10-51-70
X\_^be^
0-18
C-19(a)
C-20(a)
C-22(a)
C-25
0-24
0-25
0-26 (a)
0-1
0-2
C-5(a)
C-4(a)
C-6(a)
C"7(a )
0-6(a)
C-9(a)
C-10(a)
C-ll(a)
G-12
0-15
c-14
C-15(a)
C-l6(b)
C-17(b)
0-18
C-19(a)
C-20(a)
C-22(a)
G-25
0-24
C-25
0-26 (a)
0-2
C-6(b)
C-^(a)
0-12
C-15
G-14
C-l8(a)
C-19(a)
C-20(b)
S^o,
Ligumia recta
Lampsilis ventricosa
| Ligumia recta
! Lampsilis ventricosa
Ligumia recta
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Lampsilis siliquoidea
i Ligumia recta
Lampsilis siliquoidea
Ligumia recta
Lampsilis ventricosa
Lampsilis ventricosa
Ligumia recta
Lampsilis siliquoidea
Lampsilis ventricosa
Lasmigonia complanata
Ligumia recta
Lampsilis ventricosa
Ligumia recta
01*
12
12
14
14
16
11
15
14
12
15
12
16
11
15
11
l4
11
14
15
15
16
10
9
14
12
12
12
15
15
12
15
1*5
16
12
11
20
20
12
15
12
Weigh-;,
(C-r^s)
29.5
_ i -
14.1
_l -.
14.2
_ _. j"
50.6
15.6
45.7
54.0
55-7
23.0
20.5
24.0
14.5
19.0
22.0
28.0
56.0
27.7
15.5
15.0
28.0
51-5
51.0
17.0
16.0
50.5
28.0
2J.O
68.9
114.8
55-6
68.4
57-5
56.0
28.9
18.4
55-2
47.6
51.0
25-5
47.1
19.5 -
>
100
-------
TABLE XXXX1
SUKMAEY OF MX, WEIGHT,,
OF CLAMS
April - December
1970
Weight
Experimental
'Lab #3855 j
: i
1 i
1 Experimental
Lab #5727 i
Field
Numbers
C2-1 1-6-70
to
C26a-l 1-7-70-
i I
' I
I !
J i
1 j
i '
i j
i i
! i
i *
Experimental;
Lab #5728 \
,
Field |
? Number s '.
; 02-11 -22-70 \
! to ;
qj26a-ii-21-70
;
3
i
i
' !
j f
j i'
C-23
C-24
C-25
C-26(a)
C-2
C-3(b)
C-4(a)
C-6(b)
C-8(a)
C-9(b)
C-10(b)
C-ll(a)
C-12
C-13
C-14
C-l6(b)
C-17(b)
C-18(a)
C-19(a)
C-20(c)
C-22(b)
C-23
C-24
C-25
C-26(a)
C-2
C-3(b)
C-6(b)
C-10(b)
C-ll(a)
C-12 ;
C-14
C-l6(b) i
C-17(b) ;
C-l8(a) '
C-19(a) :
C-20(c) >
C-22(b) .
C-23
C-24
C-26(a)
Ligumia recta
Lampsilis ventricosa
Ligumia recta
! Lampsilis ventricosa
Ligumia recta
Lampsilis siliquoidea
Lampsilis ventricosa
Ligumia recta
Lampsilis siliquoidea
Lampsilis ventricosa
Lampsilis siliquoidea
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Lampsilis ventricosa
Ligumia recta ;
Lampsilis ventricosa
Ligumia recta
Lampsilis ventricosa \
Ligumia recta \
\
Lampsilis ventricosa j
Ligumia recta j
!
Lampsilis ventricosa |
Ligumia recta
^
12
13
13
18
14
11
15
15
12
18
12
13
13
11
12
11
10
9
11
14
11
18
13
13
11
15 i
7
14
13
12
11
12
13
13
12
12
12
12
17 :
11
11
v ' :
22.8 ;
41.0 i
37.0 ;
42.0
18.4 i
17.4 \
35.0 i
29.5
14.3 !
32.3 !
17.8 !
17.3 !
22.8 ;
16.7 !
33.4 i
23.7 i
11.5 ;
18.7 ;
17.3 i
25.6 !
19.4 i
31.7 !
24.4 i
40.3
24.3 :
26.3 i
20.4 !
24.5 j
24.9 i
20.2 ;
20.0 !
25.0 j
27.7 j
25.2 i
17.6 1
19.2
40.0 i
25.6 !
35.8 i
30.4
38.9
101
-------
TABLE XXXXI
37 CLA1-J3
L97C
i
1
Clan ! Specimen
Category Number
(Experimental C-16 (b2 )
; Lab #5729 C-l6(b5)
C-17(b2)
C-17(b9)
Field G-17(blO)
Numbers C-17(bll)
Cl6b-12-ll -70C-17 (a2)
to S C-l8(a5)
C26a-12-ll-70 C-18(a7)
* C-19(al)
C-19(a2)
C-22(b2)
I C-22(b4)
i C-26(al)
J C-26(a3)
1
i
i
Experimental] C -2 ( 2 )
Lab #6427 1 C-2(3)
| C-3(b2)
! C-3(b3)
} C-6(bl)
Field ! C-6(b4)
.-'Numbers ; C-6(b6)
"(Composite : C-9(b3)
sample - 1 C-9(b?)
see individ- C-9(blO)
-------
TABLE
SUXMAHY 0? AGE, HEIGHT, AXD SPECIES
OF CLAI-1S
April - December
1970
Cl^'.".
Category
C.---*--v>--~ !
i X'u^iber ;
\
Experimental C-12 (dead) ]
Lab #946 ซ C-12 j
f C-13 !
i ! C-14 !
! : C-15(a) !
\ - C-l6(b) j
< ' c-i7(b) ;
' (Con't.) ' C-18(a) !
: C-19(a) . :
: C-20(b) ;
' C-22(a)
C-23 I
i C-24 1
: C-25 |
; C-26(a) j
Experimenta
Lab #2875
,' Field
i Numbers
I ci-10-4-70
to
) lปU
/ko/J- 1 n~ *; ~7Ci
(j/ซ;0a J.U J ( V
I
j
j
i
'r
I
>,
. C-l 1
C-2 |
C-3(b) j
C-4(a) |
C-6(b) \
C-7(d)
*-* f \ ^^ / ,
C-8(a) i
C-9(b)
C-10(b) ;
C-ll(a)
C-12 |
C-13 ;:
CT (
-14 |
C-15(a) ;
C-l6(b) ';
C-17(b) !
C-lS(a) 1
C-19(a) |
C-20(b) j
1 C-22 j
. C-23
; c-24 !
C-25 i
C-26(a) !
S.^^-Z -> .-,
jj)*s V -W O
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Lampsilis siliquoidea
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Lampsilis ventricosa
Lampsilis siliquoidea
Ligumia recta
Lampsilis ventricosa
Ligumia recta
i
, ,
Nurr.ser '
of : Weight
Growth Ri^gs: (Grams) :
14 24.5
j .,
i 12 i 35.5
10 36.5
11
11
13
11
17
16
12
H
11
12
16
13
12
13
14
12
12
14
12
12
10
13
13
21.0
29.5
r
34.5 i
22.0 |
_ - i
32.5 i
34.5 j
35.5 j
41. C !
38.0
52.0
32.0
58.0
j
27.0 I
51.5 i
19.5 i
S\ / f }
26.5 1
19.5
25.0
27.0
/ __ ,_
60.5
22.0
24.5
28.5 i
17 J 41.5 i
Lampsilis siliquoidea
Ligumia recta
Lampsilis ventricosa
,
16 : 28.0
11 ' 31.5
12 : 29.0
10 I 24.0
10 ] 27.0
11 * 31.0
12 I 26.0
13 ' 32.5
j
13 j 40.0
11 j 35.0
15 i 52.0
11 j 34.0
103
-------
TABLE XXXXI
SUKXARY 0? AGE, WEIGHT, AIO SPEC1SS
April - December
1970
E
i Clc,
| Category
t
Experimental
Lab #9260
\
|
t j
i !
i I
|
f
\
Field 1
Numbers S
s
01-7-27-70 j
to i
326a -7-26-701
i
1
1
i
j
!
j
1
Sxperimentalj
Lab #9274 j
j
l
i
1
i
j
Field |
Numbers j
|
0158-8-5-70 j
to !
C26a-8-lQ-7d
j
S
a
S
j
i
Specimen
Number
C-l
0-2
0-5 "(a)
c-6(b)
0-7 (a)
0-9 (b)
G-10(b)
C-ll(a)
C-12
C-15
c-14
C-15(a)
C-l6(b)
C-17(b)
G-18(a)
C-19(a)
C-20(a)
0-22 (a)
C-25
C-24
0-25
C-26(a)
C-l
C-2
C-5(a)
C-4(a)
C-6(b)
0-7(0)
C-8(a)
C-9(b)
C-10(b)
0-11 (a)!
C-12
C-15 ;
c-i4
G-15(a):
0-16
0-17
C-18 c
C-19(a)
1
Species
Ligumia recta
Lampsilis ventricosa
! Ligumia recta
1
Lampsilis ventricosa
Lampsilis siliquoidea
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Lampsilis siliquoidea
Lampsilis ventricosa
Lampsilis siliquoidea
Lampsilis ventricosa
Ligumia recta
Lampsilis siliquoidea
Ligumia recta '
i
'
i
Lampsilis siliquoidea
Ligumia recta
Lampsilis ventricosa
Ligumia recta
I
i
Lampsilis siliqupidea
Lampsilis ventricosa
Ligumia recta ,
Nuribsr
12
10
12
11
11
11
12
15
11
11
11
11 :
"
12
12 '
11 i ,
12 \
10 :
14 i
11 1
12 \
10 i
11 ]
12 ;
14
10 ;
14 ;
11 .:
11
8 j
15 !
11 1
11
14 j
11 \
10 i
10 i
15
11
10
11
11
Weight
(Grams)
50
55-5
56.5
55.0
J4.0
50.0
56.5
69.0
46.5
25.0
25-5
44.0
54.0
56.0
25.0
17.0
24.5
24.5
20.5
51.0 i
54.5
52.0
54.0
44.5
i
26.0 !
20
25.0 i
22.5
21.0
25.0
26.5
55.0
22.0
29.5 i
24.5 i
24.0
19.0
26.0 ;
28.5
25.0
62.5 ;
22.5 :
104
-------
TA3LEXXXXI
C? AC-S, VEIGMT, AND SPECIES
1970
O--C-Iu
^ C-l8(a)
C-19(a) ,
C-20(b)
C-22(b)
C-25
C-2A
0-25
C-26(a)
bpuCl-OC
Ligumia recta
Lampsilia ventricosa
Lamps ilis siliqupidea
Lampsilis ventricosa
Ligumia recta
Lnmpsilia ventricosa
Ligumia recta
Lampsilis siliquoidea
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Lampsilis ventricosa
Ligumia recta
Lampsilis siliquoidea
Ligumia recta
Lampsilis siliquoidea
Ligumia recta
Lampsilis siliquoidea
Lamspilia ventricosa
Ligumia recta
Xu::.ber
oi"
C-'-^ovo." Zi;i2s
12
13
11
12
10
10
14
11
15
11
12
12
15
11
11
11
9
16
10
12
15
12
9
11
11
14
12
16
12
12
; Weiglvc
/ ,-, ^
(UTฃ.23/
29.0
68.5
29.0
50.0
4i.5
44.5
29-5
45.5
50.5
29.0
19.5
24.5
26.0
44.0
26.0
52.5
25.0
52.0
20.5
50.0
JQ.5
17.5
26.5
21.5
25.5
21-5
78.0
45.5
51.0
52.5
105
-------
TABLE XXXXI
SUMMARY 0? AGE, VJZIGHT, AXD SPEC
0? CIAI-S
April - Bccei^osr
1970
Clara Specimen
Category ; Number
Experimental 1
Lab #5273 - 2
1-5-23-70 |
Lab #5274; 1
10-5-24-70 ; 2
lab #5275; 1
11-5-24-70 | 2
;
Lab #5276 : 1
2
16-5-24-70
j Nuuibsr
Species of Weight
i Growth Rii'gs (C-raEs) .
Ligumia recta i 13 11.8(comp. ) i
Anodonta marginata ; 13 i
Ligumia recta 12 10.8(comp.) j
Lampsilis ventricosa 1 12 ''
Lampsilis siliouoidea i 10 -^ Q(comp ) !
Ligumia recta 14 *
' : (
Lampsilis siliquoidea 13 : 10.9(comp. ) !
Lampsilis ventricosa 19 !
1
: 1
.- i ^
' t
i i
) -
I '' l
; !
s i
i !
j j
j
[
i
i
\
106
-------
TABLE XXXXI
C? ACS., T.vSIG:-;;v AND SPECIES
I
{
' Cle^v Specimen
Category \ Xuaber
Native Clamis CN23(7)
(Control ' CN23(8)
#9172) I CN23(9)
\ CN23(10)
1 CN23(11)
! i CN23(12)
! CN23(13)
Field ; CN23(U)
Numbers ! CN23(15)
i CN23(16)
i 025 -7 -10-70 (jl) CN23(17)
to V CN23(18)
ic25-10-5-70(J24) CN23(19)
i(See Table ! CN23(20)
XXXXI) i CN23(21)
i CN23(22)
CN23(23)
CN23(24]
I
I
1
j
\
}
I
i !
i
1
;
i
|
I
1
':
\
i
1
!
i
;
1
Q-f Q^^. -.^2
April - December
1970
i
N\jj'*;'!os"'*
Specioj of
Growth Rings
Lampsilis siliquoidea 7
6
5
7
9
$
9
i 7
7
,L
7
! 11
9
i 10
i
'
|
i
'
.
s
f
j
|
j
'
i
i
Weight
( Grarno ) 1
3.5 j
3.5 '
3.0 ;
5.5 i
10.5 '
13.5 j
12.0 !
12.0
8r
.5 !
7.0 !
5.5 f
5.5
9.0
13.0
11.5
7.5
8t~ '
.5
18.0
i
.
j
107
-------
TABLE XXXXII
CHLORINATED HYDROCARBON PESTICIDES IN CLAMS EXPOSED IN NORTH SHORE STREAMS
Median Values in Parts per Billion (ppb)
Controls
RIVERS
Pigeon
Reservation
Brule
Devil Track
Cascade
Poplar
Temperance
Manitou
Baptism
Beaver
Split Rock
Gooseberry
Encampment
Stewart
Knife
Big Sucker
Schmidt Creek
French
Talmadge
Lester
Upper St. Louis
Lower St. Louis
Upper Nemadji
Lower Nemadji
OP 'DDT
17
-: .1
<: .1
-* .1
7-5
-: . 1
<: .1
C .1
< .1
<: .1
28
^ .1
-c .1
<: .1
<: .1
< .1
^ .1
<: .1
-c .1
<: .1
< .1
19
_: .1
<, .1
13
PP ' DDT
20
-,: .1
< .1
131
-------
1
Accession Number
w
5
Q Subject Fu
------- |