FIFTH FIVE-YEAR REVIEW REPORT
GEIGY CHEMICAL CORP. (ABERDEEN PLANT) SUPERFUND SITE
ABERDEEN, MOORE COUNTY, NORTH CAROLINA
*>EPA
SEPTEMBER 2023
Prepared by
U.S. Environmental Protection Agency
Region 4
Atlanta, Georgia
Digitally signed by Chaffins,
Chaffins, Randall
Date: 2023.09.26 06:33:09 -04'
Caroline Y. Freeman, Director
Superfund & Emergency Management Division
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His Page Intentionally Left Blank
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Table of Contents
LIST OF ABBREVIATIONS AND ACRONYMS V
I. INTRODUCTION 1
Site Background 1
Five-Year Review Summary Form 5
II. RESPONSE ACTION SUMMARY 5
Basis for Taking Action 5
Response Actions 6
Status of Implementation 12
Institutional Control Review 13
Systems Operations/Operation and Maintenance (O&M) 16
III. PROGRESS SINCE THE PREVIOUS REVIEW 18
IV. FIVE-YEAR REVIEW PROCESS 19
Community Notification, Community Involvement and Site Interviews 19
Data Review 19
Si II-: Inspection 26
V. TECHNICAL ASSESSMENT 26
QUESTION A: Is the remedy functioning as intended by the decision documents? 26
QUESTION B: Are the exposure assumptions, toxicity data, cleanup levels and RAOs used
AT THE TIME OF THE REMEDY SELECTION STILL VALID? 27
QUESTION C: H as any other information come to light that could call into question the
PROTECT IVENE S S OF THE REMEDY? 28
VI. ISSUES/RECOMMENDATIONS 29
VII. PROTECTIVENESS STATEMENT 30
VIII. NEXT REVIEW 30
I vtiLKS
Table 1: Groundwater Remediation Goals as Sepcified in the 1992 Record of Decision
(ROD) 9
Table 2: Soil Remediation Goals as Specified in the 1992 ROD 10
Table 3: Summary of Implemented Institutional Controls (ICs) 15
Table 4: O&M Activites and Costs per Year 17
Table 5: Groundwater Extraction and Treatment System Monitoring Scheudle 17
Table 6: Protectiveness Determinations/Statements from the 2018 FYR Report 18
Table 7: Influent and Effluent Monitoring Summary 23
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Figures
Figure 1: Site Location Map 2
Figure 2: Detailed Site Location Map 3
Figure 3: Depiction of Historic Layout of Site Structures 3
Figure 4: Extraction and Treatment System Site Layout 13
Figure 5: IC Map of Impacted Parcels 16
Figure 6: Upper Black Creek Aquifer Monitoring Results 20
Figure 7: Lower Black Creek Aquifer Monitoring Results 22
Figure 8: Surface Water Monitoring Results 25
Appendix
APPENDIX A REFERENCE LIST
APPENDIX B SITE CHRONOLOGY
APPENDIX C CURRENT SITE STATUS
APPENDIX D INSTITUTIONAL CONTROLS
APPENDIX E COMMUNITY RELATIONS
APPENDIX F GEIGY CHEMICAL CORP (ABERDEEN PLANT) APPLICABLE OR
RELEVANT AND APPROPRIATE REQUIREMENTS (ARAR) REVIEW
APPENDIX G 2022 ANNUAL DOWNGRADIENT AREA MONITORING REPORT
(FEBRUARY 2023)
APPENDIX H SITE INSPECTION CHECKLIST
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LIST OF ABBREVIATIONS AND ACRONYMS
AOC
Administrative Order on Consent
ARAR
Applicable or Relevant and Appropriate Requirements
BHC
Benzene Hexachloride
BRA
Baseline Risk Assessment
CERCLA
Comprehensive Environmental Response, Compensation, and Liability Act
CFR
Code of Federal Regulation
COC
Contaminant of Concern
CRQL
Contract Required Quantitation Limit
DDD
Di chl orodi phenyl di chl oroethane
DDE
Di chl orodi phenyl di chloroethyl ene
DDT
Di chl orodiphenyltri chl oroethane
EPA
Environmental Protection Agency
ESD
Explanation of Significant Difference
FS
Feasibility Study
FYR
Five-Year Review
IC
Institutional Controls
MCL
Maximum Contaminant Level
mg/kg
Milligram per Kilogram
MNA
Monitored Natural Attenuation
MW
Monitoring Well
NC 2L
North Carolina Groundwater Standard
NCAC
North Carolina Administrative Code
NC DEQ
North Carolina Department of Environment Quality
NCP
National Contingency Plan
NPL
National Priorities List
O&M
Operation and Maintenance
OU
Operable Unit
POTW
Publicly Owned Treatment Works
PRP
Potentially Responsible Party
PSD
Performing Settling Defendants
RA
Remedial Action
RAO
Remedial Action Objective
RD
Remedial Design
RI
Remedial Investigation
ROD
Record of Decision
RPM
Remedial Project Manager
SW
Surface Water
TCE
Trichloroethene
TCLP
Toxicity Characteristic Leaching Procedure
TOA
Town of Aberdeen
TOA No. 2
Town of Aberdeen Municipal Supply Well #2
Hg/L
Microgram per Liter
UU/UE
Unlimited Use and Unrestricted Exposure
voc
Volatile Organic Compound
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I. INTRODUCTION
The purpose of a Five-Year Review (FYR) is to evaluate the implementation and performance of a
remedy to determine if the remedy is and will continue to be protective of human health and the
environment. The methods, findings, and conclusions of reviews are documented in FYR reports such as
this one. In addition, FYR reports identify issues found during the review, if any, and document
recommendations to address them.
The U.S. Environmental Protection Agency is preparing this FYR pursuant to the Comprehensive
Environmental Response, Compensation, and Liability Act (CERCLA) Section 121, consistent with the
National Contingency Plan (NCP) (40 Code of Federal Regulations (CFR) Section 300.430(f)(4)(ii)) and
considering EPA policy.
This is the fifth FYR for the Geigy Chemical Corp. Site (Geigy or the Site). The triggering action for
this policy review is the completion date of the previous FYR. The FYR has been prepared because
hazardous substances, pollutants, or contaminants remain at the Site above levels that allow for
unlimited use and unrestricted exposure (UU/UE). The Site consists of one operable unit (OU).
OU-1 addresses both the soil and groundwater remedy.
The EPA Remedial Project Manager (RPM), John Nolen, led the FYR. Participants included
Zariah Lewis (EPA Community Involvement Coordinator), Doug Rumford (North Carolina Department
of Environmental Quality [NCDEQ] RPM), and Stephanie Grubbs (NCDEQ FYR Preparer).
The relevant entities such as the potentially responsible parties (PRPs) and the Town of Aberdeen
(TOA) were notified of the initiation of the FYR. The review began on October 26, 2022.
Site Background
The Geigy Chemical Corp. (Aberdeen Plant) is located just to the east of the corporate limits of
Aberdeen, North Carolina in southeastern Moore County (Figure 1). The Site is located on the Aberdeen
and Rock fish Railroad right-of-way adjacent to Highway 21 1 and forms an elongated triangle with the
highway and railroad forming the apex. The Geigy Site encompasses an area of approximately one acre
(the source area) that has been graded. This parcel of property is owned by Aberdeen and Rockfish
Railroad. Figure 2 is a detailed Site location map.
The Geigy Site property was leased for the blending and retail sale of pesticides from 1947 until its
closure in 1989. Agricultural fertilizers, both liquid and dry, in bulk and bagged form, were distributed
from the facility at various times during its operating history. The pesticides toxaphene,
4,4-dichlorodiphenyltrichloroethane (DDT), and benzene hexachloride (BHC) were known to have been
formulated on the Site. Technical grade DDT, toxaphene, and BHC were shipped in bags or barrels to
the Site. The technical grade pesticides were then blended with clay or other inert materials to form a
usable product and repackaged for sale to local cotton and tobacco growing markets. Pesticides were not
manufactured at the Site, but rather only formulated (i.e., blended) into a product suitable for local
consumer use. Figure 3 shows the historical layout of the structures on the Site. From approximately
1947 to 1967, the Site was leased by several companies for pesticide formulation and retail sales. Since
1958, the Site was used by retail distributors of agricultural chemicals, mainly fertilizers.
Known operators at the Site and approximate dates of operation are as follows:
• White & Peeled 947-1948)
• Blue Fertilizer (1948-1949)
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• Geigy Chemical Corporation (formerly Ciba-Geigy, now Syngenta Crop Protection, Inc.)
(1949-1955)
• Olin-Matheison Corporation (now Olin Corp) (1956-1967)
• Columbia Nitrogen & Chemical Corporation (1968)
• Kaiser Aluminum & Chemical Corporation (1969-1984)
• Lebanon Chemical Corporation (now Kaiser-Estech Corp) (1985-1989)
Figure 1: Site Location Map
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Figure 2: Detailed Site Location Map
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Site Setting
The Site is currently vacant, and the land use of the surrounding area is rural residential and commercial.
The Lower Black Creek aquifer serves as the primary source of drinking water for the TO A water
supply system. The nearest active municipal water supply well to the Site is Town of Aberdeen Well
No. 2 (TO A No. 2), located approximately 3,000 feet northwest from the center of the Site, in an area
where Site-related pesticides have not been detected. The Town of Aberdeen has performed
supplemental quarterly monitoring of TO A No. 2 for alpha-, beta-, delta-, and gamma-BHC since 1996.
Analytical results have shown that drinking water quality in TO A No. 2 has consistently met applicable
Federal drinking water standards during this time. A sentinel well has been installed between the Geigy-
related pesticide plume and TOA No. 2. The Town of Aberdeen, by letter dated April 29, 1997,
informed the EPA that the Town of Aberdeen would not install any municipal water supply wells in this
downgradient area.
New residential and commercial developments are being constructed near the Site. The current
neighborhood south of the Site, Sandy Springs subdivision, is expanding their footprint toward the
Geigy property; however, the subdivision is not using groundwater as a drinking water source and is
connected to the TO A municipal water. A commercial property west of the Site on Rt. 211, Premier
Technologies Inc., is expanding. This property also does not use groundwater as a drinking water source
and is connected to the TOA municipal water. There are residents in the area that use private wells as a
drinking water source.
Appendix A provides a list of the documents used to prepare this FYR Report. Appendix B provides a
brief Site chronology. Appendix C includes Site status information.
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Five-Year Review Summary Form
siti: idi:m ii ic a i ion
Site Name: Geigy Chemical Corporation
EPA ID: NCD981927502
Region: 4
State: NC
City/County: Aberdeen/Moore County
Lead agency: EPA
Author name: John Nolcn (EPA RPM)
Author affiliation: EPA with support provided by NCDEQ
Rev iew period: 10/26/2022 - 9/20/2023
Date of site inspection: 02/15/2023
Type of rev iew: Policy
Review number: 5
Triggering action date: 09/26/2018
Due date (fiveyears after triggering action date): 9/26/2023
II. RESPONSE ACTION SUMMARY
Basis for Taking Action
Sitewide Contaminants of Concern (COCs)
The 1992 Record of Decision (ROD) identified the following COCs:
Soil: Aldrin, Alpha- BHC, Beta-BHC, Delta-BHC, Gamma-BHC, Dieldrin, Endrin Ketone,
Toxaphene, Dichlorodi phenyl dichloroethane (DDD), Dichlorodiphenyldichloroethylene (DDE),
DDT, Gamma-Chlordane, and Alpha Chlordane
Groundwater: Aldrin, Alpha-BHC, Beta-BHC, Delta-BHC, Gamma-BHC, Dieldrin, Endrin
Ketone, Toxaphene, and Trichloroethene (TCE)
The 1992 ROD included TCE as a COC but as stated in the ROD,
Additional sampling and analyses of the second uppermost aquifer to determine the extent of
pesticide contamination, and to determine if the trichloroethylene (TCE) found in two wells is
site related. Until it is proven that the TCE is not site related, it will be assumed that the TCE is
site-related and thus, it will be included as a contaminant of concern.
The EPA has since determined that TCE is not a Site-related contaminant. A possible source of the TCE
being detected on the Geigy Site is another Superfund site, Aberdeen Contaminated Groundwater NPL
Site ( ACGS), which is located 1,900 feet to the southeast.
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Response Actions
Summary of Pre-ROD Activities
The EP A conducted a Site Investigation at the Site in March 1988 in support of the Hazard Ranking
System evaluation of the Site. Isomers of BHC were found in groundwater samples from three
municipal wells and two private wells. Based on the findings of the 1988 Site Investigation, the Site was
proposed to the NPL in June 1988 and was finalized on the NPL on October 4, 1989. Special notice
letters were sent to the six identified PRPs (listed alphabetically):
Aberdeen and Rockfish Railroad
Ciba-Geigy Corp (now Syngenta Crop Protection, Inc.)
Columbia Nitrogen Corporation
Kaiser Aluminum & Chemical Corp.
Lebanon Chemical Corp.
01 in Corp.
The special notice letters requested that these companies conduct the RI/FS for the Site. Three of the
PRPs (Kaiser, 01 in, and Syngenta) entered into an Administrative Order on Consent (AOC) with the
EPA on December 16, 1988, to conduct the RI/FS. These three PRPs are referred to as the Performing
Settling Defendants (PSDs). The PSDs conducted the RI/FS at the Site between 1988 and 1992.
The RI focused on surface and subsurface soils, groundwater, and sediment. Surface water samples were
not collected because there are no nearby surface water bodies. The RI Report, which characterized the
nature and probable extent of uncontrolled hazardous waste at the Site, identified the following
chemicals as site-specific COCs: aldrin, BHC isomers, chlordane isomers, DDD, DDE, DDT, dieldrin,
endrin ketone and toxaphene.
Soil removal actions were conducted at the Site in 1989 and 1991.
• In 1989, soil and debris were removed and disposed of in two phases.
o During Phase 1 in February 1989, a total of 462 tons of affected soils were removed and
disposed of off Site. The material that was removed consisted of contaminated soils,
railroad ties, wood from a loading platform, and a minor volume of a tarlike material
which was disposed of at a Subtitle C landfill,
o During Phase 2 in October 1989, soils were incinerated at a thermal facility or were
transported as hazardous waste to a landfill.
• In 1991, approximately 2,841 tons of soils and debris were removed. Of this, 505 tons of soils
were transported to a facility for incineration and the remainder was disposed of in a landfill.
The March 1992 Baseline Risk Assessment (BRA) was prepared as a standalone document as part of the
Remedial Investigation (RI) and Feasibility Study (FS) process. This document addressed the potential
threats to public health and the environment posed by the Site under current and future conditions
assuming no remedial actions take place and that no restrictions are placed on future use of the Site.
Two overall exposure conditions were evaluated. The first was the current land use condition, which
considered the Site as it currently existed. The second was the future land use condition, which
evaluated the potential risks that may be associated with any probable change in the Site use assuming
no remedial action occurred.
The following exposure pathways were evaluated under current (1992) land use conditions at the time of
the 1992 BRA:
• Incidental ingestion of chemicals in on-site and off-site surface soil/sediment by an older child
trespasser(8-13 years old).
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• Dermal absorption of chemicals in on-site and off-site surface soil/sediments by trespassers
(8-13 years old).
• Inhalation of volatilized surface soil/sediment chemicals by an older child trespasser
(8-13 years old).
• Inhalation of volatilized surface soil/sediment chemicals by a merchant north of the Site.
• Inhalation of volatilized surface soil/sediment chemicals by a nearby child resident
(1-6 years old) and a nearby adult resident northeast of the Site.
• Inhalation of volatilized chemicals in windblown dust particles by a merchant north of the Site.
The following exposure pathways were evaluated under future land use scenarios in the 1992 BRA:
• Incidental ingestion of on-site surface soil/sediments by future on-site adult and child
(1-6 years old) residents and by a future on-site merchant.
• Dermal absorption of chemicals absorbed to surface soil/sediments by future on-site adult and
child (1-6 years old) residents and by a future on-site merchant.
• Ingestion of groundwater by future on-site adult and child (1-6 years old) residents and by a
future on-site merchant.
• Inhalation of volatile organic chemicals while showering with groundwater by a future on-site
adult and child (1-6 years old) residents.
• Dermal absorption of chemicals while showering with groundwater by a future on-site adult and
child (1-6 years old) residents.
• Inhalation of volatilized surface soil/sediment chemicals by a future on-site adult and child
(1-6 years old) residents and by future on-site merchants.
Under the current land use evaluation
The cumulative risk for an on-Site older child trespasser in contact with surface soil and air on-Site was
equal to the NCP point of departure risk of 1 x 10"6; for off-Site sediment, the cumulative risk and non-
cancer risks were below the EPA's criterion; and for current land use on off-Site exposures to merchants
north of the Site to young child and adult residents northeast of the Site for inhalation of on-Site dust
and volatilized chemicals, were below the EPA's criterion for cumulative risk and non-cancer risks.
Under the future land use evaluation
The cumulative risk for a residential young child exposed to soil, air, and groundwater was 2 x 10"3 and
4 x 10"3 for an adult. The majority of the risks were associated with the consumption of pesticides in the
groundwater. The risks associated with inhalational and dermal exposures while showering were
significantly less than ingestion. Non-cancer risks to a hypothetical young child or adult residents were,
similarly, dominated by ingestions of groundwater from the surficial aquifer. Future use cumulative risk
for merchants contacting soil, air, and groundwater was estimated to be 1 x 10"3 and also dominated by
ingestion of groundwater from the surficial aquifer.
Risks to a child and adult resident ingesting groundwater from the second uppermost aquifer (Upper
Black Creek) were 1 x 10"5 and 2 x 10"5, respectively. The hazard index exceeded one for a child
resident due to TCE but the hazard index for an adult was less than one. The risks due to inhalation of
TCE in groundwater while showering are 3 x 10"5 and 4 x 10"6 for a child and an adult, respectively.
Ecological
Adverse ecological impacts associated with the Site are not expected to occur. No aquatic life impacts
are expected, and no impacts of vegetative community are expected. Some impacts are possible for soil
invertebrates living in the limited areas of the Site.
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Remedy Components
1992 ROD, 1998 Explanation of Significance Difference (ESD), and 2019 ESD
1992 ROD
The ROD was signed on August 27, 1992, to implement groundwater and soil remedies at the Site.
As stated in the 1992 ROD:
This remedy addresses the principal threat posed by this Site. The major threat is the
contaminated groundwater emanating from beneath the Site. This remedial action will also
address soil contamination. The major components of the selected remedy include:
Groundwater
• Extraction of groundwater across the Site in the upper aquifer and the second uppermost aquifer
that is contaminated above Maximum Contaminant Levels (MCL) or the North Carolina
Groundwater Standards (NC 2L), whichever are more protective;
• On-site treatment of extracted groundwater via carbon adsorption to remove contaminants;
• Discharge of treated groundwater to the local publicly owned treatment works (POTW) or an
infiltration gallery. The discharge location will be determined in the Remedial Design (RD); and
• Continued analytical monitoring for contaminants in groundwater.
Also stated in the ROD:
If it was determined, on the basis of the preceding criteria and the system performance data,
that certain portions of the aquifer cannot be restored to their beneficial use, all of the following
measures involving long-term management may occur, for an indefinite period of time, as a
modification of the existing system:
• Engineering controls such as physical barriers or long-term gradient control provided by low
level pumping, as containment measures.
• Chemical-specific applicable or relevant and appropriate requirements (ARARs) will be
waived for the cleanup of those portions of the aquifer based on the technical impracticability
of achieving further containment reductions.
• ICs will be provided and maintained to restrict access to those portions of the aquifer which
remain above human-based goals since this aquifer is classified as a potential drinking
water source.
• Continued monitoring of specified wells.
• Periodic re-evaluation of remedial technologies for groundwater restoration.
The 1992 ROD also stated:
Further characterization shall be conducted in the second uppermost aquifer to determine the
extent of pesticide contamination and to determine the source and extent of TCE contamination.
For costing purposes, the installation of four additional groundwater monitoring wells in the
second uppermost aquifer have been included. Actual monitoring requirements shall be
established during the RD to determine if the TCE is Site-related. All Site-related TCE shall be
remediated through groundwater extraction and activated carbon treatment.
Soil
• Demolition of former warehouse foundation; Disposal at a municipal or secure landfill;
• Excavation of the top foot of on-site soils contaminated above the performance standards;
• Toxicity characteristic leaching procedure (TCLP) testing of the stockpile of contaminated soil to
determine final disposition;
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• Off-site incineration of contaminated soils that fail the TCLP test;
• Off-site disposal in an approved hazardous waste landfill of contaminated soils that pass the
TCLP test; and
• Backfilling, grading and revegetation of excavated area.
1992 ROD Remedial Action Objectives
The 1992 ROD does not specify any Remedial Action Objectives (RAOs) for soil at the Site. Rather,
the ROD stated:
The goal of this remedial action is to restore groundwater to its beneficial use as a drinking water
source. Based on information obtained during the R1 and on a careful analysis of all remedial
alternatives, the EPA and the State of North Carolina believe that the selected remedy will
achieve this goal. It may become apparent, during implementation or operation of the
groundwater extraction system and its modifications, that contaminant levels have ceased to
decline and are remaining constant at levels higher than the remediation level over some portion
of the contaminated plume. In such a case, the system performance standards and/or the remedy
may be reevaluated.
Table 1 below provides the remedial levels for the contaminants in the groundwater. Table 2 below
provides the remedial levels for the contaminants in the soil.
Table 1: Groundwater Remediation Levels as Specified in the 1992 ROD
Groundwater
Contaminants of Concern
Remediation Level (ng/I)
Basis for Remediation
Level
Aldrin
0.05
CRQL
Alpha-BHC
0.05
CRQL
Beta-BHC
0.05
CRQL
Delta-BHC
0.05
CRQL
Gamma-BHC (Lindane)
0.05
CRQL
Dieldrin
0.1
CRQL
Endrin Ketone
0.1
CRQL
Toxaphene
1
CRQL
Trichloroethene
2.8
NC2L
jig/1 - microgram per liter
CRQL - Contract Required Quantitation Limit. The CRQL is the chcmical-spccific level that a laboratory
must be able to routinely and reliably detect and quantitate in a specified sample.
NC2L - NC Admin Code Title 15A Subchapter 2L Groundwater Standards
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Table 2: Soil Remediation Levels as Specified in the 1992 ROD
Soil
Contaminants of Concern
Remediation Level (mg/kg)
Aldrin
0.1 13
Alpha-BHC
0.28
Beta-BHC
1.15
Delta-BHC
-
Gamma-BHC (Lindane)
1.5
Dieldrin
0.13
Endrin Ketone
-
Toxaphene
2
DDD
7.6
DDE
5.5
DDT
4.75
Gamma-Chlordane
1.43
Alpha-Chlordane
1.4
mg/kg - milligram per kilogram
- Not established
1998 Explanation of Significance Difference (ESD)
An ESD, which modified the 1992 ROD, was signed on January 23, 1998. The issuance of the
January 1998 ESD was necessitated as a result of the supplementary information collected during the
development of the RD, as required by the ROD. The additional analytical groundwater data generated
during the RD allowed the extent of the contamination in the Upper Black Creek aquifer to be
delineated. This data also revealed that the Lower Black Creek aquifer was contaminated with
pesticides. The lithology of the soil borings collected during the RD indicated that the confining layer
between the Upper Black Creek aquifer and the Lower Black Creek aquifer is not continuous throughout
this region and, therefore, the two aquifers are hydraulically connected. The RD data also confirmed that
TCE is not a Site-related contaminant, which was acknowledged in the 1998 ESD. This ESD did not
change any of the cleanup levels for the COCs in the groundwater.
The 1998 ESD added the following requirements to the 1992 ROD:
• Periodic measurement of groundwater levels will be conducted to verify that groundwater flow
patterns do not change over time. In addition, the natural process of dispersion, adsorption, and
degradation will be evaluated by updating the groundwater model well data as it is collected to
determine its effectiveness. These processes are collectively referred to as monitored natural
attenuation (MNA).
• Periodic groundwater monitoring will be performed on a selected number of existing and
proposed monitoring wells and piezometers. Monitoring locations and frequencies will be
reevaluated every year for the first five years and every five years thereafter.
• Surface Water and Stream Sediment Monitoring - Periodic surface water sampling and stream
sediment sampling will be conducted in McFarland's Branch, Ray's Mill Creek, Aberdeen
Creek, and Trough Branch.
• TO A No. 2 of the T own of Aberdeen's water supply system will be monitored by the Town of
Aberdeen to ensure that the well is not adversely affected by Site contaminants. Residential
well protection will be accomplished by well permit application reviews, drive through surveys
of the downgradient area and informal interviews with residents to determine if new residential
wells have gone into service. The one residential well currently in this area will continue to be
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supplied with granular activated carbon filter and will be monitored to ensure that the treated
water meets Federal and State drinking water standards.
• Periodic remedy reviews will be conducted to evaluate the effectiveness of the RA.
The Remedy reviews will focus on evaluating the protection of potential receptors and the
effectiveness of the remedy with respect to forecasted concentration trends in the groundwater.
1998 ESD Remedial Action Objectives
The 1998 ESD does not specify any RAOs. However, the ESD stated,
[The] EPA has considered the new information that has been developed and the addition made to
the selected remedy by this ESD and believes that the remedy selected in the ROD remains
protective of human health and the environment, complies with Federal and State requirements
that are applicable or relevant and appropriate to this remedial action, and is cost-effective.
In addition, the remedy utilizes permanent solutions and alternative treatment technologies to the
maximum extent practicable at this Site.
2019 ESD
The 1992 ROD relied upon soil removal and an active groundwater cleanup technology to address the
contamination at the Site. The implementation of Institutional Controls (ICs) was not required by the
1992 ROD, and the 1998 ESD relied upon ICs that were not adequately identified in that document.
The ESD signed on September 17, 2019, stated:
Neither the 1992 ROD nor the 1998 ESD required site-specific ICs to restrict the use of
groundwater at the Geigy Site. ICs are required because the remedial action results in
hazardous substances, pollutants, or contaminants remaining at the Site above levels that do not
allow for unlimited use and unrestricted exposure to groundwater. The 1998 ESD referenced
state and local controls which would serve in lieu of site-specific ICs. This ESD specifically
identifies those statutes and regulations relied upon in the 1998 ESD to prevent exposure to
contaminated groundwater until the remedy achieves cleanup levels. [The] EPA uses ICs to
protect against use of contaminated groundwater while it is undergoing remediation and to
ensure that human health exposures are under control. This is the case at the Geigy Site where
Site related groundwater contamination continues to be detected above levels that allow for
unlimited use and unrestricted exposure.
[The] EPA is relying upon North Carolina rules to protect against groundwater use.
The North Carolina Environmental Management Commission is required, under the provisions
of Chapter 87, Article 7, Section 87-83 et seq., General Statutes of North Carolina (short title:
North Carolina Well Construction Act [with implementing regulations found at North Carolina
Administrative Code, 15A NCAC 02C .0101 et seq.]), to adopt appropriate rules governing the
location, construction, repair, and abandonment of wells, and the installation and repair of pumps
and pumping equipment to safeguard the public welfare, safety and health. These rules, adopted
at the state level and implemented at the county level, are adequate to protect against
groundwater use. Moreover, the Town has enforceable ordinances in place that prohibit the
installation of private groundwater wells except under certain specified conditions and only with
prior approval of Moore County.
The 2019 ESD does not specify any RAOs. A copy of the North Carolina Well Construction Rules is
included in Appendix D.
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Status of Implementation
RA activities started in September 1996 and included:
• Removal of the remaining concrete foundations and the disposal of 2,460 tons of debris to a
Subtitle D landfill.
• Disposal of 4,475 tons of contaminated soils to a Subtitle C landfill.
• Confirmation sampling from excavations to confirm soil remediation levels were achieved and
backfilling excavated areas with clean fill, grade, and re-vegetate.
• Long-term installation of four extraction wells in the Surficial aquifer (PW-IS, 2S, 3S and 4S)
and three extraction wells in the Upper Black Creek aquifer (PW-ID, 2D and 3D) in the
vicinity of the facility property (i.e., source area).
• Construction of a building to house the groundwater treatment system and construction of a
groundwater treatment facility which includes an equalization tank, two series of activated
carbon canisters, and all the necessary electrical and plumbing connections.
• Construction of an infiltration gallery for the discharge of treated groundwater.
• Installation of six additional monitoring wells and three additional piezometers.
The groundwater extraction and treatment began operating in January 1997. Although not required by
the 1992 ROD, the PSDs abandoned the TO A No. 1 in July 1995. This well was screened in the Lower
Black Creek aquifer and the Town of Aberdeen had taken this well offline due to the presence of
pesticides in groundwater samples collected from this well. Because there is some risk for Site COCs
impacting TO A No. 2, which is also screened in the Lower Black Creek aquifer, the PSDs installed
monitoring well MW-36L between the plume's edge and TO A No. 2 and also screened in the Lower
Black Creek aquifer. Based on the flow rate of the groundwater in the aquifer in this area, MW-36L was
located approximately one year travel time (approximately 750 feet) upgradient of TO A No. 2.
MW-36L is considered a sentinel well. To date, no contaminants have been detected in MW-36L.
Figure 4 includes a map with on-site and off-site well locations as well as the groundwater extraction
and treatment system layout.
The PSDs leased an adjoining land parcel, located south of the rail line where the treatment building,
the groundwater extraction wells, and the infiltration gallery were constructed for the Site
groundwater remedy.
The EPA, the former North Carolina Department of Environment and Natural Resources (currently
NCDEQ), and representatives from the PSDs conducted the Pre-Final Inspection and Final Inspection of
the implemented remedy on January 15, 1997 and February 25, 1997, respectively. The Preliminary
Close-Out Report, which documents construction completion, was issued by the Agency on
July 20, 1998.
As required by the ROD, the PSDs characterized the groundwater contaminations detected
downgradient of the Site. Between March and April 1998, seven additional monitoring wells were
installed as part of this effort, two monitoring wells in the Upper Black Creek aquifer, and five in the
Lower Black Creek aquifer. The results of this effort were the basis of the 1998 ESD.
12
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Figure 4: Extraction and Treatment System Site Layout
Institutional Control Review
ICs are defined as non-engineered instruments, such as administrative and legal controls, that help
minimize the potential for human exposure to contamination and/or protect the integrity of the remedy.
Table 3 includes a summary of implemented ICs. Figure 5 depicts the impacted parcels that have
groundwater COC concentrations above the ROD Cleanup levels (2018).
Neither the 1992 ROD nor the 1998 ESD require the implementation of specific ICs. The
implementation of the 2019 ESD identified statutes and regulations relied upon in the 1998 ESD to
prevent exposure to contaminated groundwater until the remedy achieves cleanup levels. As stated
13
-------
previously in this FYR in subsection 2019 ESD, the EPA is relying upon North Carolina rules to protect
against groundwater use. The North Carolina Environmental Management Commission is required,
under the provisions of the North Carolina Well Construction Act, N.C. Gen. Stat. Section 87-83 et set].,
to adopt appropriate rules governing the location, construction, repair, and abandonment of wells, and
the installation and repair of pumps and pumping equipment to safeguard the public welfare, safety,
and health. The regulations implementing this statute are found at 15A NCAC 15 02C .0101, et seq.
These rules, adopted at the state level and implemented at the county level, are adequate to protect
against groundwater use. A copy of North Carolina's Well Construction Rules is included in
Appendix D. Also, the Town operates a public water supply system and has enforceable ordinances in
the TO A Water and Wastewater System Extension and Connection Policy that prohibit the installation
of private groundwater wells except under certain specified conditions and only with prior approval of
Moore County, which is the authority that implements the requirements of 15A NCAC 02C .0101,
et seq. The Town also has a Wellhead Protection Plan (Revision 3), dated December 4, 2012, intended
to control development in areas of groundwater recharge.
14
-------
Table 3: Summary of Implemented Institutional Controls
Media That Do
Not Support
UIJ/UE Based on
Cu rrcnt
Conditions
ICs
Needed
ICs Called
for in the
Decision
Documents
Impacted
Parcel(s)
IC
Objective
Title of IC Instrument
Implemented and
Date (or planned)
Soil
No
No
NA
NA
NA
Groundwater
Yes
Yes
See Figure 5
for off-site
groundwater
plume map
of impacted
parcels
Adopts appropriate rules
governing the location,
construction, repair, and
abandonment of wells, and
the installation and repair
of pumps and pumping
equipment to safeguard the
public welfare, safety,
and health.
These rules, adopted at the
state level and
implemented at the county
level, are adequate to
protect against
groundwater use.
The Tow n of Aberdeen has
enforceable ordinances in
place that prohibit the
installation of private
groundw ater wells except
under certain specified
conditions and only with
prior approval of
Moore County.
The Tow n of Aberdeen has
prepared and adopted a
Wellhead Protection Plan
(Revision 3), dated
December 4, 2012,
intended to control
development in areas of
groundwater recharge.
2019 ESD,
September 17, 2019
The North Carolina
Well Construction
Act, N.C. Gen. Stat.
Section 87-83 et seq.
North Carolina Well
Construction Act's
implementing
regulations at
(15A North Carolina
Administrative Code.
15ANCAC 02C
.0101 et seq. (Well
Construction Rules)
Section 5.1 of the
Tow n of Aberdeen
Water and
Wastewater System
Extension and
Connection Policy
(adopted
August 1 1. 2008)
The Tow n of
Aberdeen Wellhead
Protection Plan
(December 4, 2012)
The above State and local rules provide the necessary
Cs to protect human health.
15
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Figure 5: Institutional Control Map of Impacted Parcels
0 625 1.250 2.500
Feet
Sources Esn. DigitalGlobe, GeoEye, Earthstar
Geographies. CNES/AirbusDS. USDA USGS.
AeroGRI0. IGN. the GIS User Community. 2018 Five-
Year Review and Moore County GIS
Legend
^^3 Source Area Property Parcel
• - Approximate Extent of Groundwater Contamination
Above ROD Cleanup Levels (2018)
Property Parcels
o
Vnorth
Gelgy Chemical Corp. (Aberdeen Plant) Superfund Site
City of Aberdeen, Moore County, North Carolina
September 2019
Systems Operations/Operation and Maintenance (O&M)
According to EnviroTrac, on behalf of Olin Corporation and Syngenta Crop Protection, in 2022 the
system performed as designed and experienced minimal down-time. Over 2.6 million gallons of water
was extracted and treated between December 6, 2021 and December 9, 2022, at an effective treatment
efficiency of nearly 100 percent. The system is routinely shutdown for brief periods to conduct operation
and maintenance activities such as replacing carbon drums, fittings, and bag filters. Well pumps, flow
meters, and electrical relays were replaced without shutting down the system.
Groundwater sampling occurs annually for all monitoring wells and quarterly for influent, effluent, and
carbon filtration units. Monthly windshield surveys of properties within the BHC plume are conducted.
Table 4 provides a list of Site activities conducted by the PSDs and the associated cost for each activity
over the past five years, 2018 to 2022. Table 5 shows the Groundwater Extraction and Treatment
System Monitoring Schedule. See Figure 4 above for the Extraction and Treatment System Site Layout
and well locations.
16
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Table 4: O&M Activities and Costs per Year
0(0 ; Ci! - -110 S'lLTiiih.-.,!"-! . \ C: 1 \ !l!CS pvl' Yo;:r
Overall O&M Cost
per Year
2018
Routine O&M/Compliance Monitoring/Carbon Exchange
$46,473
2019
Routine O&M/Compliance Monitoring/Carbon Exchange
$44,693
2020
Routine O&M/Compliance Monitoring/Carbon Exchange
$54,753
2021
Routine O&M Plus System Maintenance
$73,966
2022
Routine O&M/Compliance M on i tori ng/ C a rb on Exchange
$54,152
Table 5: Groundwater Extraction and Treatment System Monitoring Schedule
SAMPLE
LOCATION
PARAMETERS
FREQUENCY
TCL PESTICIDES
TCE
QUARTERLY
ANNUALLY
MW-4 S
V*
S
MW-5S
/
V
MVV-6S
¦*/
MW-ICS
¦*/
>/
s
MW- I6S
if
f
MVV- 17S
~
f
MVV-I3S
V
-/
MW -1 i D
v''
v/
>f
MW-I6D
/
v
MW- I7D
V
V
MVV-ISC'
s
~
V1'
MW-2HD
yf
V
MW-22D
V"
V
MW-J?D
V
V'"
MW-2CD
v'
V
<:
{—J
rn
v'
yf
MW-22L
v1'
V
MW-25L
~
V"
MW-27L
V
•f
MW-2'L
v/'
v"
MV7-32L
V"
V
MW-,:'6L
y
V'"
MW-27L
f
V
MW-38L
y
V
MW-3&L
¦v"
f
MW-4CL
>f
V
PZ-2
v'
-f
PZ-3
v1"'
v'1
PZ-5
V7'
V
Influent
>f
-------
III. PROGRESS SINCE THE PREVIOUS REVIEW
This section includes the protectiveness determinations and statements from the 2018 FYR Report as
well as the 2018 FYR Report's recommendations and the status of those recommendations.
Table 6: Protectiveness Determinations/Statements from the 2018 FYR Report
on#
Protectiveness
Determination
Protectiveness Statement
OU-1 &
Sitewide
Short-Term
Protective
Currently the Geigy Chemical Site is protective of human health and the
environment in the short-term. The completed remedy, source removal,
groundwater remediation consisting of an active pump and treat system and
MNA downgradient of the Site remains protective of human health and the
environment. The remedy currently protects human health and the environment
because no human or ecological exposure pathways exist to contaminated soil or
groundwater. Although neither the 1992 ROD nor the 1998 ESD require the
implementation of specific 1 Cs. the ICs that have been established through
different avenues are considered protective by the Agency. These ICs include
required monitoring activities by the PRPs as mandated by language in the 1998
ESD and the legal requirements established through the efforts of both the State
and local governments. However, in order for the remedy to be protective in the
long-term, the following action needs to be taken: complete a thorough review of
the current Site COCs and remediation levels and issue an ESD. if necessary, to
amend the COCs and remediation levels to maintain protectiveness of human
health and the environment.
No issues were identified in the 2018 FYR. Although the following recommendation was noted as
"Other Findings" in the 2018 FYR, it does not affect current protectiveness:
The progress of achieving groundwater performance standards (cleanup levels) is dependent on
MNA processes in the downgradient area of the Site. Timeframes estimating when these MNA
processes would achieve the groundwater performance standards were presented in the 1998
ESD. The timeframes to achieve groundwater performance standards need to be re-evaluated for
accuracy using the most appropriate method of the three methods listed in Appendix K [of the
2018 FYR], The results of this effort should be incorporated into the next FYR.
Progress Since Last FYR
Activity since the previous FYR:
• The implementation of the September 17, 2019 ESD provided clarification of ICs at the Site and
the requirement to use the North Carolina Well Construction Act, N.C. Gen. Stat. Section 87-83
et seq. with implementing regulations at North Carolina Administrative Code, 15ANCAC
02C .0101 et seq. (Well Construction Rules), the Town of Aberdeen's ordinances prohibiting
installation of private groundwater wells except under certain circumstances, and the Town's
Wellhead Protection Plan to protect against groundwater use.
18
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IV. FIVE-YEAR REVIEW PROCESS
Community Notification. Community Involvement and Site Interviews
On October 19, 2022, the EPA issued a press release, which announced that comprehensive reviews
will be conducted of completed cleanup work at NPL Superfund sites in the Southeast, including the
Geigy Chemical Corp Site. A copy of the final FYR Report will be made available on the EP A website:
https://www.epa.gov/superfund/search-superfund-five-vear-reviews.
During the FYR process, interviews were conducted to document any perceived problems or successes
with the remedy that has been implemented to date. The interviews are summarized below, and the
interview forms are included in Appendix E.
NCDEQ RPM, Doug Rumford, was interviewed as part of this FYR regarding the activities and
implementation of the remedial actions at the Site.
Mr. Rumford indicated that the overall impression of the project is the remedial activity to date has
been warranted and appropriate including the operation and maintenance activities at the Site. In the
time since the last Five-Year Review, the remedies utilized thus far appear to be containing the
spread of the contaminant plume to the point at which it has not extended its lateral reach toward
Aberdeen Creek.
Data Review
Groundwater and surface water sampling occurs at the Site annually. Influent, effluent, and carbon
filtration units are sampled quarterly. The groundwater and surface water data presented below is a
representation of the current groundwater conditions as documented in the most recent annual report, the
2022 Annual Downgradient Area Monitoring Report (February 2023) with data from the October 2022
sampling event (Appendix G). The full report along with current and historical data summary tables can
be found in Appendix G.
Groundwater
Upper Black Creek Aquifer Groundwater Samples
BHC isomers were detected at concentrations exceeding the performance standards in five of the seven
Upper Black Creek monitoring wells (MW-11D, MW-18D, MW-20D, MW-22D, and MW-30D).
Alpha-BHC- exceeded the performance standard in MW-18D. Beta-BHC exceeded the performance
standard in MW-11D, MW-18D, MW-20D, MW-22D, and MW-30D. Delta-BHC exceeded the
performance standard in MW-11D, MW-18D, and MW-30D. The BHC isomer concentrations in the
seven monitoring wells sampled remain within the range of historical results.
Figure 6 is a map with the Upper Black Creek Aquifer Monitoring Results. Appendix G, Table 1 is a
summary of the data from the Upper Black Creek Aquifer, October 2022 sampling event.
19
-------
20
-------
~n
HH
Q
W
ON
to
-------
Lower Black Creek Aquifer Groundwater Samples
BHC isomers were detected at concentrations exceeding the performance standards in 9 of the 13
Lower Black Creek monitoring wells. No pesticides were detected at levels exceeding the performance
standards in groundwater samples collected from monitoring wells MW-32L, MW-36, MW-38L, and
MW-39L, located adjacent to Aberdeen Creek and Ray's Mill Creek. BHC isomer concentrations
exceeded the performance standards in monitoring well MW-40L, located adjacent to McFarland's
Branch. No pesticides were detected in the groundwater sample collected from monitoring well
MW-36L, which serves as a sentinel monitoring point for TO A No. 2. BHC isomer concentrations
generally have decreasing trends. The BHC isomer concentrations detected in the monitoring wells
remain within the range of historical concentrations.
Figure 7 is a map with the Lower Black Creek Aquifer Monitoring Results. Appendix G, Table 2 is a
summary of the data from the Lower Black Creek Aquifer, October 2022 sampling event.
22
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IMW-32L I
NO ANALYTES DETECTED f
\/lW-39L
| NO ANALYTES DETEC1
** lives
PZ-2
*lpha-&HC 0.15
brta-BHC 0.15
delta-BHC 0.15
gaimrra-BHC 0.12
I
3frimiiv
PZ-3
alpha-BHC 0.12
heta-BHC 0.0*6
delta fiH C 0.099
gamma-BHC 0.10
¦"to-
; ™ CSEEL
'MW-311
alpha-BHC 0.21
beta-SHC
delta-BHC
alpha BHC
beta-BHC
delta-BHC
gainma-ffHC
VI h ^
alpha-BHC >1 41
bets BMC n 45
deltj-ftHC <1.4#
gsn"ri«-B--iC.l.n76
MW-37L
alpha BHC
beta-BHC
drtta BMC 1.4
gafima-BHC 012
Endrin Stetoni? 0 OSS
JMW-36L
1 NO ANAIVTTS DETFCTTD
0 55
0,91
¦SO4
3
"iBtj* MW-271
™ — -alpha-BHC 0.60
beta-BHC 1.7
delta-BHC 1.1
gamma-BHC 0.15
Diclerin 0.07?
Endrln ketone 0.15
FINLEY
(211/
V-
O
\l
CH*P£L
MW-25L
alpha-BHC 0.47
beta-BHC 0-81
detta-BHC 1.3
gamma BHC Oil
MCMHUDBING WELL IDCAHCN
IAACHATORV RESULTS |ufc,':|
IBCL0 WCMBSttW«3M4«« STANDARD]
TOWN Cf ABERDEEN SUWIY WA~H WILL
S
MW22T^
alpha-BHC
0.10
bcta-ftHC
0.44
delta-BHC
0.21
gamma BHC
OOBf
AP-RCX1MATE SCA1E
nGURE3
LOWER BlAGt CREEK AQUIFER MONITORING RESULTS
LABDRAtDRY RESULTS WQXIOl ONLY
GGWT4MMANTC ®tPOBTU)
ABCVI TWt METHOD OCTiCTItS UVIF5.
BACKGROUND IMF RDM MOOBL COUNTY
SCALE: A3 3HGWN
PROJECT W: 11.99W13.CC
-------
Influent and Effluent Monitoring
Table 7 below is the summary data from the Influent and Effluent Monitoring Summary data, from the
October 2022 sampling event as reported in the 2022 Annual Operating Report. The influent
concentrations are consistent with previous sampling data. No COCs were detected in effluent samples
in 2022.
Table 7: Influent and Effluent Monitoring summary
PARAMETER
FIRST 0
UARTER
SECOND QUARTER
THIRD QUARTER
FOURTH QUARTER
PERFORMANCE
STANDARD
SAMPLE LOCATION
INFLUENT
EFFLUENT
INFLUENT
EFFLUENT
N FLUENT
EFFLUENT
INFLUENT
EF-LUENT
DATE COLLECTED
01/14)22
01.'14(22
04.'23,'22
05.'11<22
7,'12.2022
7/12/2022
10fl 1/22
lft'11/22
Aldrin
0.0096 Jp
0.050 U
0 046 U
0.045 U
0.045 U
D.045 U
0.D5D U
0.045 U
0 05
alpha-BHC
0.022 J
0.050 U
0.03T J
0.045 U
0.045 U
0.045 U
0.D5D U
0.045 U
0 05
beta-EHC
2.0
0.05D U
3.4
0.045 UL2
2.4
D.045 U
2.3
0.045 U
0.05
delta-BHC
0.17
0.050 U
0.27 J
0.045 U
0.35
0.045 U
0.D5D U
0.045 U
0.D5
gamma-BHC (Lindane)
0.021 Jp
0.050 U
0.045 Jp
0.045 ul:
0.045 U
0.045 U
0.D5D U
0.045 U
0.2
alpha-©»lordane
O.OEO U
0.050 U
0.066 p
0.045 ui2
0.CK5 U
0.045 U
0.050 U
0.045 U
NE
garrma-Chlordane
0.029 Jp^
0.050 U
0.046 Jp
0.045 U
0.045 U
0.045 U
0.050 U
0.045 U
NE
Cec-
0.25 p
0.05 U
0.39 J
0.045 UL2
0.52
D.045 U
O.OSO u
0.045 U
D.1
4,4-DDD
0.050 U
0.050 U
0 D46 U
0.045 UL2
D.CK5 U
D.045 U
0.D5D U
Q.045 u
NE
4,4-DDE
O.OEO U
a 050 u
0.056
0.045 uls
0.045 U
D.045 U
0.D5D U
0.045 U
NE
4,4-DDT
0.060
0-050 U
0 046 U
0.045 U
0.0^5 U
D.045 U
0.D5D u
0.045 U
NE
EndoaMfan 1
O.OEO U
0.050 U
0 046 U
0.045 UL2
0.045 U
D.045 U
0.D5D U
0.045 U
NE
Endossrfan 1
O.OEO U
0.050 U
0.046 U
0.045 uu>
O.OiS U
D.045 U
0.D5D U
0.045 U
NE
Endcs- fan suiate
O.OEO U
0 050 U
0 046 U
0.045 UL2
0.045 U
0.045 U
Q.D5D U
0.045 U
NE
Endnn
O.OEO U
0.050 U
0 046 U
0.045 ul;
D.045 U
0.045 U
0.050 U
0.045 U
NE
Endrin adehyce
O.OEO u-
0 050 u-.
0.048 U
0.045 U
0.045 U
0.045 U
0.050 U
0.045 U
NE
Endrin ketone
0.13 p
0.05 U
0.22
0.045 U
024
D.045 U
G.D5D U
0.045 U
0.1
HeptacWDr
O.OEO U
0.050 U
0.046 U
0.045 U
0.045 U
D.045 U
0.DSD U
0.045 U
NE
HeptacMor epoxide
O.OEO U
0.050 U
0 046 U
0.045 UL2
0.045 U
0.045 U
0.D5D U
0.045 U
NE
Meihoxychlor
0.050 40%. The lower vafrue h3s been reported
NE = No standard established
U = Indicates the analyte vjas not delected
L1 = Aiiaiyte recovery ire the LCS was above QC limits. Results for th is araiyte is associatec samples may be biasec high
L2 = Analyte recovery "m the laboratory control sample (LCS) was beSow QC limits* Results far this analyte n associates samples may be biased low.
MO = Matrix spike recovery and/or mate spike duplicate recovery was outside laboratory control limits.
Ml = Matrix spike recovery exceeded QC limils. Batch accepted basse on LCS recovery.
Rt = RPD value was outside control limits.
Bold = Concentration exceeds performance standard or metfwKl detection (units if r>o standaed is established
Private Drinking water Wells
From December 2018 to August 2019, the North Carolina Department of Transportation (NCDOT)
contractors for the aforementioned Aberdeen Contaminated Groundwater NPL Site (ACGS), located
1,900 feet southeast of the Geigy Site, prepared a map of all monitoring wells surrounding both the
ACGS and Geigy Sites. In October 2019, the contractors conducted a sampling event consisting of
157 groundwater monitoring wells and ten surface water sampling locations. In April 2021, NCDOT
contractors sampled an additional 57 drinking water wells in the area. During this sampling event, BITC
isomer concentrations were detected in private drinking water wells on two properties (as documented in
the Final Report of Findings, Water Supply Well Survey, Regulatory Review and Exposure Assessment,
Aberdeen Contaminated Groundwater NPL Site /NCN00040744 ~/).
• Property #1: VOCs cis-l,2-dichloroethene and 1,1-dichloroethene (compounds related to TCE)
were detected below their respective NC Classifications and Water Quality Standards Applicable
to the Groundwater of North Carolina, NCAC Title 15A Subchapter 2L NC 2L groundwater
standard (NC 2L). The pesticide gamma BHC (lindane) was detected at 0.03J (estimated value).
This detection is below the Geigy remediation goal of 0.05 jjg/L and at the NC 2L standard of
0.03 (Jg/L. The NCDOT (the Responsible Party for the ACGS) offered to either install a point of
24
-------
entry (POE) carbon filtration unit at the home or offered a connection to municipal water.
The homeowner declined all alternate water sources.
• Property #2: Pesticides alpha-BHC 0.535 (.ig/L, beta-BHC 0.111 (.ig/L, delta-BHC 0.182 (.ig/L,
and gamma-BHC 0.495 (.ig/L were detected. The NC 2L standard for alpha-BHC, beta-BHC, and
delta-BHC is 0.02 (.ig/L, and gamma-BHC is 0.03 (.ig/L The NCDOT installed POE carbon
filtration units at this property in 2021.
The Final Remedial Design, ACGS, Town of Aberdeen Wells, December 2012 report documented
pesticide contamination in 2009, 2010, and 201 1 from the now-idle TO A No. 9 water supply well
(located approximately 4,200 ft south of the Geigy Site).
Based on data to support the presence of BHC isomers downgradient of the Geigy Site, additional
groundwater investigations at the Geigy Site may be needed to evaluate the effectiveness of the
groundwater treatment system and the attribution and extent of BHC isomer concentrations off Site.
Surface Water
No pesticides were detected in surface water samples collected from McFarland's Branch (SW-1, SW-2,
and SW-3). No pesticides were detected in surface water samples collected from Aberdeen Creek
(SW-04, SW-05, SW-06, SW-07, SW-08, and SW-11-2). No pesticides were detected in the surface
water samples collected from Ray's Mill Creek (SW-09).
Figure 8 is a map with the Surface Water Monitoring Results. Appendix G, Table 3 below is a summary
of the surface water data, October 2022 sampling event.
25
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Figure 8: Surface Water Monitoring Results
Site Inspection
A Site inspection was conducted on February 15, 2023. In attendance were John Nolen (US EPA),
Doug Rumford (NCDEQ), Bennie Underwood and Cydney Kirby (de maximis, inc.), Jerry Wylie
(SynTerra), Christopher Hay (EnviroTrac), Dane Grimshaw (Olin Corp), and Bill Odle (NewFields).
The purpose of the inspection was to assess the protectiveness of the remedy. It was noted during the
Site inspection all O&M documents, monitoring data, and discharge compliance records are readily
available, submitted on time, and are of acceptable quality. It was noted that gates are secured, and no
vandalism had occurred. The groundwater extraction wells, pumps, and pipelines are in good condition
and all monitoring wells are operating properly. The system was noted as being in good condition and
all sampling ports were properly marked and functional. It was noted that, as suggested by the data, the
plume is not contained and has migrated off Site. Appendix H contains the Site Inspection Checklist
from the Site visit.
V. TECHNICAL ASSESSMENT
QUESTION A: Is the remedy functioning as intended by the decision documents?
Yes. The EPA and the State of North Carolina have determined that all the remedial action construction
activities were performed according to specifications and the remedial action continues to operate as
designed. The soil cleanup was successful; the active pump and treat remedy is operating as intended;
and the third component of the remedy, MNA, is being monitored. Currently, no human exposure
pathway exists to contaminated soil. However, there is a potential human exposure pathway that exists
to groundwater due to the presence of private wells in the area that are currently used for consumption.
26
-------
Based on data to support the presence of BHC isomers downgradient of the Site, additional groundwater
investigations at the Geigy Site may be needed to evaluate the effectiveness of the groundwater
treatment system and the attribution and extent of BHC isomer concentrations off Site.
Regarding ICs, neither the 1992 ROD nor the 1998 ESD require the implementation of specific ICs.
The implementation of the 2019 ESD identified statutes and regulations relied upon in the 1998 ESD to
prevent exposure to contaminated groundwater until the remedy achieves cleanup levels. Governmental
controls based on the North Carolina Well Construction Act and its implementing regulations found in
the North Carolina Administrative Code, 15A NCAC 02C .0101 et seq., prohibit the installation of
drinking water wells into contaminated aquifers. These regulations pertain to the permitting and
installation of water supply wells and the role of the local health departments as the permitting authority.
These rules, adopted at the state level and implemented at the county level, are adequate to protect
against groundwater use. Also, the Town of Aberdeen operates a public water supply system and has
enforceable ordinances in the Town of Aberdeen Water and Wastewater System Extension and
Connection Policy that prohibit the installation of private groundwater wells except under certain
specified conditions and only with prior approval of Moore County, which is the authority that
implements the requirements of 15A NCAC 02C .0101, et seq. The Town also has a Wellhead
Protection Plan (Revision 3), dated December 4, 2012, intended to control development in areas of
groundwater recharge.
QUESTION B: Are the exposure assumptions, toxicity data, cleanup levels and RAOs
USED AT THE TIME OF THE REMEDY SELECTION STILL VALID?
Soil
Yes. The exposure assumptions, toxicity data, clean-up levels, and RAOs used at the time of the remedy
are still valid for the soil COCs. The analysis in Appendix F indicates that none of the remediation goals
resulted in a cancer risk greater than 1 x 10"4 for carcinogens or a noncancer HQ of greater than 1 and,
therefore, remain protective of human health.
Groundwater
Yes. The exposure assumptions, toxicity data, clean-up levels, and RAOs used at the time of the remedy
are still valid for the groundwater COCs. The analysis in Appendix F indicates that none of the
remediation goals resulted in a cancer risk greater than 1 x 10"4 for carcinogens or a noncancer HQ of
greater than 1 and, therefore, remain protective of human health.
The NC Classifications and Water Quality Standards Applicable to the Groundwater of North Carolina,
NCAC Title 15A Subchapter 2L (NC 2L) were last amended on April 1, 2022. CERCLA requires that
the remedy comply with any standard, requirement, criteria, or limitation under any Federal
environmental law, as well as any promulgated State standard that is more stringent than any federal
standard. The 1992 ROD set the remediation goals as the Contract Required Quantitation Limits
(CRQL) for all eight pesticide COCs. Currently, seven of those pesticides have NC 2L Standards more
stringent than the CRQLs set by the ROD. These pesticides are aldrin, alpha-BHC, beta-BHC, delta-
BHC, gamma-BHC (lindane), dieldrin, and toxaphene.
The CRQLs, on which a majority of the remediation levels are based, have not changed; however, the
current NC 2L Groundwater Standards are more stringent. As stated above, the remediation levels set by
the CRQLs remain protective but a review of these remediation levels will need to be undertaken before
the Site can be closed out with the State of North Carolina's concurrence.
27
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The EPA will not reopen the remedy selection decision contained in the ROD unless a new or modified
requirement calls into question the protectiveness of the remedy. See 55 FR 8757 (March 9, 1990).
Changes in a standard identified as an ARAR in the ROD does not require a change in the remedy so
long as the remedy remains in the 1 x 10"4 to 1 x 10"6 range or HQ equaling 1 or less. The changes
identified here do not achieve this threshold.
Vapor Intrusion
Appendix F contains the results of the vapor intrusion evaluation. Indoor air concentrations were
calculated from groundwater remediation levels for the two COCs (Aldrin and TCE). None of the
groundwater remediation goals resulted in a cancer risk greater than 1 x 10"4 for carcinogens or a
noncancer HQ of greater than 1 and, therefore, remain protective of human health.
QUESTION C: H as any other information come to light th at could call into question
THE PROTECTIV ENESS OF THE REMEDY?
No additional information has come to light since the previous FYR that calls into question the
protectiveness of the remedy.
28
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VI. ISSUES/RECOMMENDATIONS
Issues/Rccommcndations
OU(s) without Issues/Recommendations Identified in the FYR:
None
OU(s):
OU-1 (Sitevvide)
Issue Category: Remedy Performance
Issue: Containment of pesticide plume needs to be evaluated
Recommendation: Determine if pesticide plume is contained by the current
system. Consider remedy optimization of innovative and enhanced
remedial measures to supplement the current pump and treat system to
decrease the potential for off-Site plume migration.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight Party
Milestone Date
No
Yes
EPA/State
EPA
9/26/2025
OU(s):
OU-1 (Sitevvide)
Issue Category: Monitoring
Issue: Define off site Groundwater Plume
Recommendation: Evaluate attribution and extent of BHC isomer
concentrations found off Site.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight Party
Milestone Date
No
Yes
EPA/State
EPA
9/26/2025
OU(s):
OU-1 (Sitevvide)
Issue Category: Monitoring
Issue: NC 2L Groundwater Standards have been amended and are currently
more stringent than several of the ROD cleanup levels
Recommendation: Evaluate the ARARS to determine if modifications to
the decision document will be needed.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight Party
Milestone Date
No
Yes
EPA/State
EPA
3/7/2024
OU(s):
OU-1 (Sitevvide)
Issue Category: Monitoring
Issue: BHC isomer contamination has been detected in private wells
Recommendation: Evaluate the need to include these private wells in the site
monitoring program.
Affect Current
Protectiveness
Affect Future
Protectiveness
Party
Responsible
Oversight Party
Milestone Date
No
Yes
EPA/State
EPA
9/30/2024
29
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OTHER FINDINGS
These additional findings do not rise to the level of an issue affecting current or future protectiveness;
however, these findings need to be evaluated and/or addressed.
• The progress of achieving groundwater performance standards (cleanup levels) is dependent on
MNA processes in the downgradient area of the Site. Timeframes estimating when these MNA
processes would achieve the groundwater performance standards were presented in the 1998
ESD. The timeframes to achieve groundwater performance standards need to be reevaluated for
accuracy using the most appropriate method. The results of this effort should be incorporated
into the next FYR.
VII. PROTECTIVENESS STATEMENT
I'rolcdiMMicss Sliitcments
Operable Unit: Protectiveness Determination: Addendum Due Date:
OlJ-1 (Sitewide) Short-term Protective NA
Protectiveness Statement: The remedy at the Site currently protects human health and the
environment in the short-term because no unacceptable health risks result from human exposure to
contaminated soil or groundwater from the Site. Soil contamination was remediated through source
removal and the performance standards for the soil remediation were met. Groundwater remediation
continues to consist of an active pump and treat system and MNA downgradient of the Site. However,
the groundwater contaminant plume may have migrated off Site. Institutional controls have been fully
implemented at the Site, as required by the 2019 ESD. In order for the remedy to be protective in the
long-term, the following actions need to be taken:
• Evaluate the level of effectiveness of the pump and treat system.
• Evaluate innovative and enhanced remedial measures to supplement the current pump and
treat system.
• Evaluate attribution and extent of BHC isomer concentrations found off Site.
• Evaluate the ARARS to determine if modifications to the decision document will be needed.
• Evaluate the need to include private wells, with BHC isomer contamination, in the site monitoring
program.
VIII. NEXT REVIEW
The next FYR Report for the Geigy Chemical Corp (Aberdeen Plant) Site is required five years from the
completion date of this review.
30
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APPENDIX A
REFERENCE LIST
U.S. Environmental Protection Agency, Region IV. August 27, 1992. Record of Decision, Geigy
Chemical Corp. Site, Aberdeen, North Carolina.
Rust Environment & Infrastructure, June 1997. Remedial Action Report for Soils - Performance
Standards Verification Report, Geigy Chemical Corporation Site, Aberdeen, North Carolina.
U.S. Environmental Protection Agency, Region IV. January 23, 1998. Explanation of Significant
Difference, Geigy Chemical Corp. Site, Aberdeen, North Carolina.
US Army Corp of Engineers, First Five-Year Review Report. September 25, 2003. Geigy Chemical
Corp. Site, Aberdeen, North Carolina.
U.S. Environmental Protection Agency, Region IV. September 26, 2008. Second Five-Year Review
Report, Geigy Chemical Corp. Site, Aberdeen, North Carolina.
JM Waller, December 2012. Final Remedial Design, Town of Aberdeen Wells, Aberdeen Contaminated
Groundwater NPL Site (NCN000407447), Aberdeen, Moore County, North Carolina.
U.S. Environmental Protection Agency, Region IV. September 17, 2013. Third Five Year Review
Report. Geigy Chemical Corp. Site, Aberdeen, North Carolina.
U.S. Environmental Protection Agency, Region IV. September 26, 2018. Fourth Five Year Review
Report. Geigy Chemical Corp. Site, Aberdeen, North Carolina.
U.S. Environmental Protection Agency, Region IV. September 17, 2019. Explanation of Significant
Differences. Geigy Chemical Corp. Site, Aberdeen, North Carolina.
EnviroTrac. March 2022. 2021 Annual Operating Report. Geigy Chemical Corp. Site, Aberdeen,
North Carolina.
EnviroTrac. March 2022. 2021 Annual Downgradient Area Monitoring Report. Geigy Chemical Corp.
Site, Aberdeen, North Carolina.
EnviroTrac. February 2023. 2022 Annual Operating Report. Geigy Chemical Corp. Site, Aberdeen,
North Carolina.
EnviroTrac. February 2023. 2022 Annual Downgradient Area Monitoring Report. Geigy Chemical
Corp. Site, Aberdeen, North Carolina.
Environmental Evaluation Services, Inc., December 9, 2021. Report of Findings, Water Supply Well
Survey, Regulatory Review and Exposure Assessment, Aberdeen Contaminated Groundwater Site,
Aberdeen, Moore County, North Carolina.
Groundwater Management and Associates, Inc., September 19, 2022. Removal Action Report for OU-1
of the Aberdeen Contaminated Groundwater NPL Site (NCN000407447), Aberdeen, Moore County,
North Carolina.
A-1
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APPENDIX B
SITE CHRONOLOGY
Event
Date
Site leased by several companies for pesticide formulation and retail sales
1947 to 1989
EPA detected pesticides in surface and subsurface soils on the site
January 1987
Site inspection conducted by the State of North Carolina
March 1987
Preliminary site assessment
June 1987
Site proposed to be listed on the National Priorities List
June 1988
Administrative Order on Consent signed
December 16. 1988
Site added to National Priorities List
October 4. 1989
PSDs conducted a soil removal action. 462 tons of soil and
debris removed
February 23, 1989 to
December 16. 1989
Second soil removal action by PSDs. 2,841 tons of soil and
debris removed
February 25, 1991
to June 1. 1991
Human Health Risk Assessment and Ecological Risk
Assessment completed
March 13, 1992
PRP preparation of Remedial Investigation and Feasibility Study
December 16. 1988
to August 27. 1992
Record of Decision signed
August 27. 1992
Consent Decree for PSDs to conduct remedial design/remedial actions
July 15, 1993
Remedial Design Start
July 15, 1993
Remedial Design Completion
March 1996
Remedial Action contract for construction of groundw ater remediation
svstem and removal of contaminated soil and debris aw arded by PSDs
September 1996
Pre-final inspection of soil remediation by EPA and State of
North Carolina
January 15,1997
Groundwater Remediation System operational
January 1997
Final inspection of soil remediation by EPA and State of North Carolina
February 26. 1997
Dow ngradient Groundwater Remedial Action Work Plan approved by the
EPA and NCDENR
November 1997
Explanation of Significant Differences issued by the EPA
January 1998
Preliminary Close-Out Report
July 20. 1998
Additional monitoring well installation
April 1998
ATSDR releases Public Health Assessment report for Geigy Site
August 16,2001
First Five-Year Review Report
September 25, 2003
Second Five-Year Review Report signed
September 26. 2008
Interim Remedial Action Report completed by the EPA
March 2011
Third Five-Year Review Report signed
September 17. 2013
Fourth Five-Year Review Report signed
September 26. 2018
Explanation of Significant Differences signed
September 17. 2019
* Site Monitoring or O&M reports are not included in the Site Chronology
B-1
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APPENDIX C
CURRENT SITE STATUS
Kiivironiiicnlsil Imlicsilors
S—— WfffflwHWWWWHWBHBWWWBHWHHWMHI
- Current human exposures at the Site are under control.
Arc Necessary Inslitnlion:il Controls in Place!
All O Some O None
The implementation of the 2019 ESD identified statutes and regulations relied upon in the 1998
ESD to prevent exposure to contaminated groundwater until the remedy achieves cleanup
levels. Governmental controls based on the North Carolina Well Construction Act and its
regulations found at North Carolina Administrative Code, 15A NCAC 02C .0101 et seq. (Well
Construction Rules), prohibit the installation of drinking water wells into contaminated
aquifers. These regulations pertain to the permitting and installation of water supply wells and
the role of the local health departments as the permitting authority. These rules, adopted at the
state level and implemented at the county level, are adequate to protect against groundwater
use. Also, the Town of Aberdeen has enforceable ordinances in place that prohibit the
installation of private groundwater wells except under certain specified conditions and only
with prior approval of Moore County and a Wellhead Protection Plan intended to control
development in areas of groundwater recharge.
Mas KPA Designated (lie Nile as Silcwklc Ready lor Anticipated I so?
XI Yes ~ No
I his the Silo IJccn Put into Uciisc.
[~^esElNo
C-l
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APPENDIX D
INSTITUTIONAL CONTROLS
NCAC TITLE 15A SUBCHAPTER 2C
SECTION .0100 WELL CONSTRUCTION STANDARDS
TOWN OF ABERDEEN WELLHEAD PROTECTION PLAN, DECEMBER 2012
D-1
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INC AC TITLE 15A SUBCHAPTER 2C
SECTION .0100 WELL CONSTRUCTION STANDARDS
North Carolina Administrative Code
Title 15A
Department of Environment and Natural Resources
Division of Water Qualify
£5®
Current Through October 1,2009
Environmental Management Commission
Raleigh. NC'
Subchapter 2C
Section .0100
Well
Construction
Standards
Criteria and Standards
Applicable to Water Supply
and Certain Other Wells
D-2
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EXR - Eiivirmmtmiiil Mmttigemem
ISA XCaC .mm
Sl'BC HAPTER :C - WELL C ONSTRUC TIOX STANDARDS
TABLE OF CONTEXTS
RULE .0101 GENERAL PROVISIONS 1
RULE .0102 DEFINITIONS 1
RULE 0103 REGISTRATION (Repealed; 3
RITE 0104 PUMP INSTALLATIONS REGISTRATION iRepealed) 3
RITE 0105 PERMITS 4
RLXE 0106 WATER USE PERMIT (Repealed; 5
RULE .010" STANDARDS OF CCONSTRUCTION: WATER SUPPLY WELLS 6
RULE 010S STANDARDS OI C ONSTRUC TIQN: "A"ELLS OTHER THAN WATER
SUPPLY 14
RULE.0109 PUMPS AND PUMPING EQUIPMENT 16
RULE 0110 "ELL TESTS FOR YIELD 17
RULE 0111 DISINFECTION OF WATER SUPPLY WELLS 19
RLXE on: WELL MAINTENANCE: REPAIR' GROUNDWATER RESOURCES 20
RULE .0113 ABANDONMENT OF WELLS 20
RLXE .0114 DATA AND RECORD'S REQUIRED 22
RULE .0115 DL4.GRAMS AND FORMS i Repealed 23
RLXE .0116 DE SIGNATED AREAS' WELLS C ASED TO LESS THAN 20 FEET 23
RIXE .0II" DE SIGNATED AREAS' WELLS CASED TO LESS THAN 35 FEET 24
RLXE 01SS YAPJANCE 25
RtXE 0119 DELEGATION 26
D-3
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EXR - Environmental Management
ISA XCAC ,G!M
(11.1 "Ccc.taniic.afe'1 or "Coaaoiuiatioii" mean:- the introduction of foreign material1; of
such iiarut-e. quality, and quantity ate the groundwaters as to exceed the groundwater
fitasity -it.mdards specified iti 15A NC AC' 02L i Classifications and '.Yates Quality
Ssaedaids Applicable tc the Giouadwaters of North Carolina;-.
[Note: 15A NC AC OIL 02G2(b)i 3 k addresses where naturally occurring oubstance:¦
exceed the established standard]
¦¦ 12 ,i "Departxem" is as defined in G S S7-S:;(:".i i,
\B i "Deiisned capacity" means that capacity that is eruat to the yield that is specified by
tlie well ownei ct his ?,eei:t piior id construction of the well
•; 14-j '"Director'' means the Director cf tte Divi«ca of Water Quality or the Doctor's
deleeife.
(151 "Divisico* mean* the Dniuoa ofWater Quality,
i 1S • ''Domestic use-" means watet used fat duafkiaf. bathing. oi other household purposes,
livestock. oi eat den;
(l"i ''Fcsmation Material" means namr-illy cearning material generated during the
drillmz piece.-: thai it, composed of Mads, silts. clay; or fragments of rock and which
i: not k a dissolved state
i 1 Si *GPM' and "GPD" iiif.tn plioas pei minute and galloas per day. respectively.
•; IP) '"Giof.t' means a iintenal approved m accordance with Rule .0107(e) of this Section
for use in sealing the arji'.Ua: •.pice of a well or liner c: for sealing a well during
abandonment.
;20i ''Licer pipe1' mesas pipe that is installed inside a completed and cased well for the
puipcse of preventing the eatuince ?f contamination inio the well oi for impairing
ruptured. corroded oi punctured c a sine oi scteens.
(21t h Monitoring well" inems any '.veil constructed foi the priaiary puipose cf obtaining
sample- of groundwatet or other liquid'- for examination or testing, oi for the
oboerratioi: at measurement of »cuadwa;ei levels. This ctefkuftoa excludes
lyskneters. fenssoaietets. and othe: device; used to investigate the chaiacfenstics cf
the unsaturated zone but includes piezometers. a type of momtotms well constructed
solely fa' tte purpose of detei mining groundwater levels.
[22f '"Ownei" means any person who fedds, the fee cr cither property rights in the well
being constructed
[Note: Absent a contrary ajaeeaieat iei wtkuig rhe Department '.vilt pteswme that the
weli owner a ad the land owner me the same pet ton.]
(23) ''Pities:- adapter-/' or 'pities-; units'' are devices manufactured to the standards
specified under 15A NCAC 02C ,0107(j j(5'j for the purpose of allowing a S'.ib'.-iwface
Literal comiectson behveen .t well and plumbing appurteaaace-j.
>;24.'i "Public water system" means a water iysteia as defined m 15A NCAC ISC (Rule-;
Gcvemias Public Wafer Supplies).
(25'i ''Recovery well'' means any well constructed for the p'.mpose of lenicvme
coataminated erouadwater oi other liquid; £ on: the substuface
,261 ''Salsiie'1 uieaci having a chlotsde concentration of more "Setneatole solids' means the vohtuie of solid particles ie a well-mixed cue lifer
lanipie which will settle ott: of suspeiisior.. in the bottom of an Inihcff C one. after
one how.
2
D-4
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EXR - Emircnmtenml .\ftiftageinent
l5.4SXAC.0m
(29 i "Site1' aietmt the land or water aie.i where any facility, activity or situation ii
physically located, incltidms adjacent ct other land used la connection with the
facility, activity cr utuatioc.
('301 "Specific capacity" meant. ±e yield of the well exp;et->ed in fallout pet minute pei
foot of draw-down of the watei level tgpm ft -ddi
(31 > "Static waten level' meant the level at which the watet strntdt. m the well when the
well ii aot tenia pumped and is exptested a', the dit-Linee fretr. a fixed refeieace
point to the watei level in :he well.
•'32) "Si: speeded solids" means the weight of those solid particles m a sample which are
retained by a standard glass aiiciofibei filter with poie opemags of one and cme-half
miaous, when dried a? a :enipe:ature between. 103 and 1C5 deeiees Filneaiiei;.
(33 j "Teaiporaiy welt" mean. a well that is cetistructed to determine aquifer
chaittcteiistics. aad wluch will be pemitmeiitly abandoned or converted tc a
peimacent well within seven days (16S hours i of the completion cf dulling cf the
borehole.
(34) "Tiufcidity" means the cloudiness in water, due to the presence of suspended particle-;
such as clay and ¦t.ilt, that may create esthetic problems or analytical difficulties, for
detemiinuif ceatrtmmatioii
{351 "Yecr" means a petsiHsiect opening in the well cat-uie oi well head, in stalled foi the
purpose of allowing changes iii the watei level in a well due tc aattu.il atmospheric
clause t, ct tc puaipuif A vent stay also verve at- at access prat,
(3c* * "'ell' is a', defined m C-.S S~-S5(i4,i.
•;3'7i ''Well capacity" means the maximum quantity cf water that a well will yield
continuously as determined by methods outlined m 15ANCAC C2C .0110.
(35i "Well head'' means the upper teiuuital c.f the well including adapters, ports. valves.
seals, andoihei attachments.
(39j "Tell system'1 means two or more well-, ccaaeciecl to the same disftibr.uea or
colkctiea system or. if nor concerted tc a distribution, oi collection iy.tem. wo or
uicie wells iemag the -tame site.
(40) "Yield" meant: the volume of water or other fluid pet tune that can be discharged
,fien; a well under a given -tet of circumstances.
Ei:?on'Nere: .lurk-.vir, G 5". S~-S5; S~-5~. US-21-t 2, 1~S-2'1.\S;
EtT Februar, 1. la"6'
A»ta"
Korc- .iwhoiir, 0,5". 5~-S "
Etf. Fvbruar, 1, 19~6'
Repealed Etf. Jidr I, MS
3
D-5
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£\R - Environmental Maiiagemeui
15.4 yCAC ,0100
15am:ac o:c mo? permits
fa; Br « the fkdice of the Commission that tte entire geographical area of the state is voiaerat&e to
groundwater pollution ficai tutpropeily located. contracted operated, aileied. ct abandoned wells.
Theiefoie. in order to ensure reasonable protection of the stowndivatet sescwces. prior permission
20111 the Department stall be obtained let 'he construction of the f.pes cf wells, enumerated in
Pansgt apii fb i of this Rule
(bl No per -mi shall locate or construct any of the following wells until a permit has been issues by
the Department;
(11 any water-well ot well system with a designed capacity of 100.000 gallons pet day
(gpd; oi greater:
'Zj any well added to mi existing system where the total tte signed capacity of such
existing welt system and added well will equal cr exceed IUO.WO epd:
\3) any monitoring well or monitoring well system. constructed tc assess hydrogeoloeic
conditions on property act owned by the well owner:
(41 any tecoveiy well:
'51 any well with a deign deviation from die standaids specified undet the rules cf this
Subchapter. including wells for which a vaiiance is required
(c) The Department shall issue permits ioi wells used rot ie charge oi injection purposes in
accordance with I5A NCAC 02 C .0200.
itdl The Depaitment shall issue permits for private drinking water wells in accordance with 1:1 A
NCAC 02C .0300. including private diinking water wells with a designed capacity greater than
100.000 gallons per day and private dtiolang water wells foi which a variance is required
(el An application for .my well requiring a peimit pursuant to Paragraph fb: cf this Rule shall be
submitted by the owner oi his agent In the event that the peimit applicant is not the owner of the
property on which the well or well system is to be constructed, the permit application shall contain
written apptcval from the pioperty owner and a statement that the applicant assumes total
responsibility for ensiwias that the weUi s.t will be located, constructed, maintained and abandoned in
accordance with the iequrreaients of tins Subchapter
(fi Tte application shall be submitted tc the Department on fciais furnished by the Depot tiuent. and
shall include the following.
' 11 the owner \ name:
¦' 2 i the owner's mailing address and proposed well site address:
3! description of the well type and activity lequirmg a permit.
41 site location (nispi:
• 51 a map of the site, tc scale, showing the locations of:
[A; all pioperty bouadatits. at leas: one cf which is sererenced tc a aiianiimi of
two landmarks such as identified roads, inteisections, streams or lakes within
500 feet of piopcsed well or well system,
(Bj all existing '..veils, identified by type :f i. e within 500 feet cf pscposed well
or well systenr
t C 5 'the proposed weM or well lysTesr
ID any test botinet, within 500 feet of proposed well or well system: and
(Ei all soiuces cf known or potential groundwater contamination fsuch as septic
tank systems, pesticide, chemical or rod storage areas: animal feediots. as
defined by G.S. 143-215.lOBi J), landfills or other waste disposal areasi
within 500 feet cf the proposed well.
>01 the well contiactos's name and state certification ouaibet. if known, and
4
D-6
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ENM - Emirotmeiital Managemeat
15.4 XCAC MOD
construction diagram of The piopo'.ed wel!^} including specific at ion.-; desctibmg all
materials to be ».«ed. methods of contraction aod wtam fcr aviating the integrity
and quality of the finished welli.i}
(si For water supply wells or well systems with a designed capacity of 100.000 epd or fieatei. the
application ;hail include, ui addition to the mfcimatiou. sequired 111 Paragraph ifi of this Rule:
(1! the aumbei. yield and location of existing wells k the system.
i'2! the desigaed capacity cf the proposed weli{'/i:
(3) for well". to be screened in multiple zones or arjurers. representative data on the static
votei le,-el and pH. specific coadtictaace. and concentrations of sodium, potassium,
calciuat. aiagnessuai. sulfate. c blonde. and carbonates from each acpife: ot zoae
ftotii which watt: is proposed to be with®an. The data subaiitted shall be
sufficient to demonstrate that construction of the proposed well mil satisfy the
requirements of 15A XCAC 02C .0lC«~ihi(2):
\4t a copy of any wat e: use permit te turned putsnar-t to G.S 14-3-215.15. a ad
i any othei well coastrucnon information o; site specific mfomiation deemed necessary
by the Department fot the protection of human health and the environment,
thi For those niooitoring wells With a design deviation from, rhe specificotioas of 15A NC AC 02C'
01 OS of tins Sectioa. in addition to the imcmiaticui required ia Paragraph (fj of this Rule, the
application shall include'
i'll a descnptaoo. of the subsurface conditions sufficient so eyahute the site. Data from
test borings, wells, and pumpuig tests ma}- be necessary
(2) a description. of ±e quantity, character and ongiii of the contamination:
>:3 i justification for the necessity of the desiaa deviation. and
•:4; any other well construction infoimation os site specific infoiaution deemed necessaty
by the Department for the piofeotioti of human health and the environment,
ti) For those recover," '.veils with a design deviation from the specifications in 15A XCAC 02C
01 OS of this Section, in addition to the information returned m Patagraphs (fl ctnd (hi of this Rule,
the application shall describe the disposition of any fluids cecoveied if the disposal of those feuds
will have aa impact on any easting wells othei than those installed tos the express piupc:e of
measinitig the effectiveness of the recovery well) s),
iVi In the event of an emergency, any well listed ia Sabpatagraph ("b){l*i through (b:i;ht of tins Rule
may be constructed after verbal appioval is ptcvided by the Department, Aftes-tlie-faot applications
shall be submitted by the pet son responsible for ddlling or owner within ten days aflei construction
begins. The application shall include construction details of the Welti's) .md include the name of the
person who save verbal approval and the tune and date that approval was erven
iki The well owner or his agent shall see that a permit is seemed prior to the beginning of
contraction of any well foi which a penmt is required under the roles cf this Sirbohaptet
HurctyNore. Aiirh-jrir, G.S. S"-3~; I-ii-215.1,
Eff. Febi 'itvi I, j?~6:
Amended Ef. i<5pYmlw I, 2909, April 1, 2061, Ztecembet J 1992- Marcn I, 1PS5';
September 1, IPS4: Apui 20 1 *
ISA XCAC CtlC .DIM WATIR USE PERMIT
Huron" Xt>re, Au^hvir, G S". 142-215 14 1-if-215 12"
EjT, Fvbrnjr, 1, i 3"b
Repealed Eff. April 2fj 19'78
D-7
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EXM - Em-iromieutalM(magt'f>iem ISA XCAC ,6106
15ANCAC fllC .DID* STANDARDS OF C 0> STRUC TIOX; WATER SUPPLY
WEILS
i a i Location.
(1! A ivates supply well shall net be located in any aiea where rot face w.itei or runoff
will Hccnaiulice mound -.veil doe to deptessions. diainaee wav:, and ctfcer
landscapes that '.rill conceutiate watei around the well,
•;2) The minimum horizontal separation between a water supply well and potential
soutces of groundwater contamination. which exist at the time the well is constructed,
is as follow-. unless otherwise specified:
(A? Septic tank and drainfield. including dr.iiiifietd :epati aiea 100 feet
iB.i Other subsurface ground absorption waste disposal system 100 feet
(C ,i Industrial or municipal residuals disposal or wastewates-uiigation site',
100 feet
iD;> Sewage or liquid-waste collection or transfer facility." constructed to water
main standaids in accordance with 15A NC AC 02T .03Cl5(git,2; or 15A
KCAC ISA i?50i'e'i, as applicable 50 feet
! E ) Cither sewage and liquid-waste collection ci transfer facility 100 feet
iF! C esspoels ai:d p:i vies 100 feet
i,G;< Animal feediots. as defined by G S. i 43-215. lCBi'5or niam;i« pries
100 feet
|H; Fertilize!. pesticide, lieibicide or other chemical storage areas 100 feet
(I) Non-hazardous waste storage. treatment or disposal lagoons 100 feet
;J) Sanitary Lmdftlls, municipal solid waste landfill facilities, incinerator',,
cinstruction and demolition tC SlD) landfills and othei disposal sites except
Land C lenring and Inert Debris landfills 500 feet
|K> Land Clearing and Inert Debus fL€ED) landfills 100 feet
iXi Animal bams 100 feet
(M/ Building perimeters. including any attached structures 25 feet
(Si Surface water bodies winch act as sources c-f groundwater recharge, such as
ponds. lakes and teserroirs 50 feet
iO; All othei surface water bodies, such as brocks, creeks, stie^nsii. rivers.
sounds, bays and ndal esraad.es 25 feet
IP) Chemical or petroleum fuel uaderetoand stoiage tank systems regulated
under 15ANCAC 02N:
fit with secotidary containment 50 feet
Us) Without secondary containment 100 feet
iQi Above ground o: under®otmd storage tanks winch contain petroleum fuels
used for fce.vuig equipment boilers ot furnaces, with the exception of tanks
used solely foi stoiage of propane. natural gas. or liquefied petscleimi gas
50 feet
(Hi All ether petroleum or chemical stotage tank systems 100 feet
i'S) &ta- esites 50 feet
iTl All other potential sources of groundwater contamination 50 feet
;3 I lor a water supply well fas defined in G.S. S~-§5(13/] on a lot serving i
single-family dwelling and intended fox domestic use. whe;e lot size ox other fixed
condition; piecSlide the separation distances specified uu Subparagiapt of tins
Rule, the lequired hoiizoatal separation distances shall be the awsknitni p; ssible bivr
shall ic no ease be less than the fcllowms:
6
D-8
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£.Y1 - Eminmntmial Mamgetiteiti
ISA XCAC .0100
(A; Septic tank and dtaioiield, including dtamneld repair aieis. escep; sapioite
systems a-definedin 15ANCAC iSA .1956(6) 50 feet
i.Bi Sewage oi liquid-waste celiecncn ct traasfe: facility constructed to water
awic standards it accatdaace with 15A XCAC 02T .0305/s 1 i"2 > or 15A
NCAC ISA i?50i'ej. as applicable 25 feet
|C i Animal bams 50 feet
Mtitniwii separation distances for all other potential sonsces of srcnind water
contamination stall be those specified in Subparagraph (a}(2) of this Rule.
•.4i In addition to the twkimnai separation distances specified ia Subpaiagrapli (a)(2) of
thi-i Rule. a well cs well system with a designed capacity of 100.000 epd ot greater
shall be located a sufficient distance ficin known oi anticipated sor.rces of
ei oundwatei contamination so as to pi event a violation of applicable groundwater
quality standards, jesiddsif from the movement of contaminants. in response tc the
operation of the well c: well system at the proposed rate and schedule of pumping
•;5'i Welti dulled fci public water supply systems i emulated by the Division cf
Eii'.iicoiwn'al Health -jball meet the reriv_rements of 15A NC AC ISC".
>;b) Sowtce of water.
(l"i Ite source of water for any watet supply well '.hail net be from a water beating zone
or aqr.ifet that it- contaminated:
(2.1 In designated areas described ia 15A NCAC 02 C .011" of this Section. die sonice
shall be greater than 35 fee- below kind surface:
(3) la designated areas described in 15A NCAC 02C .01 Id cf this Section. the soi'.rce
may be lev, 'ban 20 feet below land surface. but in at? case less firm E0 reet below
land t-urfa.ee:
(4j Im we 11c, constructed with separation distance-; less than those specified in
Subparagraph ia}(2i cf this Rr.le based on lot size or other fixed conditions as
specified ni Subparagraph (a/fi'i cf this Rule, the source shall toe greater than ?5 feet
below land surface except ia ateas described in Raie ,0i It? or tliio Sectioa, and
(51 la ail c±ei aieas the source shall be at least 20 feet below toad surface.
(ci Drilling Fluids a ad Additives Drilling Fluids and Additives shall nor contain organic or toxic
siibst.Tiices or include water cbtained torn surface water todies or w«fet fioa a non-potabte supply
and ma}* be comprised only cf:
(ll the fotmational snateiial encouateted during drilling, oi
'2t materials mamifatra;ed specifically for the purpose of borehole conditioning at wate;
well construction
•vd! Casing.
" 1: If steel casing is used:
(Aj The casing ''hail be new. seamless or electr.o-iesistance welded galvanised c*
black steel pipe. Galvanisms siiaLl be dcae m accoidante with leqniieaient-;
of ASTM A?3 A55iI-0". which is hereby uscctpDrated by refeieace.
including subseqiieat ameridmeuu and editsoas. and caa be obtained from
ASTM InteinaticMiat. 100 Ban Harbor Dave. PO Box C "JO. West
Cou'.hc'hocken. PA. 19428-2959 at a cost oi fifty-one dollar-:, iS5l CD).
|Bi The casing, thread > a ad couplings ilial': meet or exceed the specifications of
ASTM A55 A53M-0" or A5S9 5S9M-06. which is t«eby incoiporated by
;efeience. including •:ubsequeur .imendnients aad edrncas. and can be
obfauied from ASTM International. 100 But Hatbor Dsire. FO Box C "00.
West Cottvfcctcclcea. PA. 1P42S-295P at a cos* of fifty-oae dollais (S5l.00i
and foity-tSuee dollars (S4-3.0Ci. respectively:
D-9
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EXR - Environmental Management
ISA \cac ,oim
iCj The wall thicixev, for a given diameter shall equal c: exceed th
-------
ENR. - Environmental Management
15.4 XCAC ,9100
TABU 2: Maximum allowabledepths (in feet) ofInstallation of
Nominal
Maximum
Maximum
Diameter
Depth ik feet)
Depth ria fee*)
i, inches'!
for Schedule 4-0
for Schedule SO
«Ti
•IS 5
14 SO
Tt
4:5
1170
-» %
515
o:c
4
255
"55
5
ISO
550
6
150
495
S
25
340
10
65
290
12
65
re
14
50
265
16
50
255
Maximum
Maximum
Maximum
Depth (ui
Depth (in
Depth (ia
feet) for
feet) fci
feet! foi
SDR 21
SDR r
SDR 13.5
Ail
Diameter s
135
355
"35
(DTheiuioplai*ic casing with wall tiudmew less than that ccneipe tiding w SDR
21 ci Schedule +0 iliall not be lived,
iE'i Foi welh in which the caving will extend tnto ccsKolidated rock.
diennopla-;tic ca.iue shall be equipped with a coupling. oi other device
appscved by :te manufacturer of the catinz. that it. sufficiect to piotec! the
physical integrity of the thermoplastic cabins daring the processes of ,en-mz
and gioi'.tais the capitis and subsequent di'dkng Qpetaricns. and
(Pi TJismioplaonc castas slialE not be duvet by mipM. but may be pushed
(3) In coc .Tnicvjis any well, all vrater-beaiieg zones, that contain contaminated. saline. or
other non-potable water jliaLI te cased and snouted so thai contamination of ovetlymz
and vsndeilyiciz stcundwater zones -iliall cc: eccus.
i 41 Every wel! shall be cased so that the bottom of the casing extend; to a minimum
depth a;, follows;
i'A'> Well7, located within che area described in Rale .Oil"7 ef this Section shall be
cased 5 em land sv.rface to a depth of at lea-it 35 feet
(B'i Wells located within the area descubed in Rule 0116 of this Section shall be
eased frcai toad surface tc i depth of at least 1C feet
i'C i Well', cextracted '.vith sepai a nor. distances less that those specified m
Sxibpatanaph i.a j>;2 j of this Rate based ca lot size « other fixed conditions as
specified in Subparagraph (a'tt'3} cf this Rule shall be cased from land surface
to a >iepth of at least 35 fee1; except in area'* descubed in Faile .0116 of thi'.
Section.
9
D-l 1
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ES'R - Eminmmenmi Management
ISA \TAl~ MOO
I'D',- Wei!'; located in any otto area shall be cased fioni kind siwfece to a depth of
or ie«T,t 20 feet,
51 The top of the casing itall be Terminated at least 12 see he-; above laad siKTace
regardless of the method cf well construction and type ofpitmp tc be installed.
(0) Tl:e casing it well1; cot tenc ted tc cbtak watw from a consolidated rock fcrouaca
itall meet the teqr.iiemeat'i specified in SnbpaiMiaphi through (d'i 5 i of this
F.tile rasd -Jiall be:
I A) adequate tc c:event any formation,!! matesial icui entering the well in excess
of the levels specified ui Piiaaiaph fli« of this Rule, aad
t'B) firmly seated .it lea-it five feet into the icck.
{7) Tte casing us well; constructed to obtain water from an unconsolidated rock
fomiattca fsficli as gravel wad or shells i shall extend at lea-it one foot tote the top of
tie water-beanos forma tic a.
(Si Upon completion of the well, the well shall be -ynfScvently free cf obstacle:, including
formation aiateiini as aecessny tc allow for the installation and propel opeiaticii of
pitasps and associated equipment.
(Pi Psioi tc removing equipment fiorn the site, the tap of the eating ihait be veiled with a
water-tiskt cap ct well *eaL as deimed in G.S. S~-S5i.'L6;. to preclude the entrance of
contaminant;. into the well
i, e i Allowable Che iu -i
(1) One cf the following grouts stall be used wherever grout si required by a rule cf tail
Secttec. Wbete a particular type cf greet is specified by a Rule of this Section, ao
other type of gior.t itall be used.
i'A'i Neat ceaieat eicut stall consist of a auxfttre of not mere than sis eailoiii of
clear, potable water to cue 94- pound bag of Portland ceaieat. Up to five
percent, by weight, of beatcoite may be used "o improve flew and reduce
staicJcase If beiitomfe is used, additions! \vat« may be added a: a late net to
exceed 0.6 salient of watei foi each pound cfbentouite.
iB) Sand cement aicr.t stall consist of a mixture cf act rnoie thai: five parts sand
and one part cement and not more tliac. six zallono of cleat, potable water per
P4 poimd bag of Portland ceaieat.
iC') Concrete zrca;t stall consist cf a mixture cf no; nic-re than two parti aravel cr
reck cr.ttsiiei tc one part cement aad act more than six gallons cf cleat,
potable water per P4 poimd tag cf Portland cement One kua&ed percent of
the gravel oi rock amines must be able tc pass thjongh a one-half inch mesh,
screen.
(D; Bentccite shiny aeut shall consist cf a mixture of act tncie than 24 eallecs
of clea;. potable water to one 50 pound bag of eoaiffiereial sodium bentemte.
Kcti-oisajiic. noc-toxic substances may be added tc benreiiire slimy stoat
mixtures :o imprcve particle distnbtitiot and pvmpability. Bentointe slurry
grout ma)' only be used ui accordance with the maaufacturer's written
icitructiocs
fFi Bectoiate chips or pellets shall consist of pre-tcreened scdr.im beatocite
chip-i cc compressed sodium beatocite pellets with iaigest dimension cf at
least one-ic'.utl. inch tot act greater than one-fifth cf the width cf the amroi.u"
space into which they are to be placed Bettonite chip'., oi pellets Aill be
hydrated in place. Bentootte chips oi pellets may only be used in accordance
with the ttsanufacfjie;"'! v.iittea mstEiictioi;;..
10
D-12
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EXK - Emirmmt'Jimi Jtlfmagemem 15.4 XCaC .0106
tFi Specialty sroit; stall consist of a ouxtiwe of coa-orpsic. cea-toxic matetiais
with characteristics of expatricn. eaeiiiical-iesistaEce i.ite or heat of
hydiation, viscosity. density or tempetature-saiutchitT applicable tc specific
grouting lequireaients. Spec2airy zioun may not be used without prior
approval by the Secretary. Appicval cf the use cf specialty stouts shall be
based 011 a demonstration that the fLuthel grout hi: a pemieabdity less than
lCT" centimeters per second and will act adversely impact Iranian health of the
etvii couen:.
(2) Witt the exception of bearooite chips or pellets. the liquid and solid component'- of
all sxov.t nuxn;ie. .till be blended prsot tc- euiplacecuent below land surface.
(3) Nc fly ash. otket coal coaibustioi: bypio duett-. or other wa'„:es may be used m aay
HPOUl.
ifi Gicnic eaipLiceir.eut,
(1) Caving shall be grouted to a miiiitiuitr., depth of 2C fee; below land surface except
that:
fA; In those .12 ea. (tea snared by the Director to meet tfcie criteria of Rule .0:16 of
this Section, grout shall extend tc 3 depth of two feet above the screen or. fct
open end wells, tc the bottom cf the casing. but 111 no case less than 10 fee;.
i'B> In those area-; designated in Xr.le .011" cfthis Section, steal shall extend to a
atimim.1111 cf 5? feet betcw land surface
•:"2i la addition to the eic-Jtinf tequired by Subp.itagtaph ifuli of this Rule, the casing
-hall be gsouted as necessary tc tea! off all aquifer* 01 rones that contain
contaminated. saline. 01 othei ticm-potable water so that contamination of ovet lying
stcd wcdeih'ine aquifers 01 zones shall not oceut.
1;3"1 Bentomte slimy spout may be used in that portion of (he borehole that is at Least thiee
feet tetcw land surface That portion of the borehole from Liiid surface to at least
three feet below land surface shall be filled with a concrete or cement-type eiosu or
beatomte chips ot pellets that are hydrated in place,
f 41 Grout shall be placed around the casing by one of the following methods:
1 A": Pressure. Grout shall be pumped 01 forced voder pressure through the bottom
of the casmz until it fills the annr.lai apace atcund the casing and overflows a:
•he it'-;face:
(B) Pumping. Grout shall be pumped ie.ro place though a hose ot pipe extended
to the bottom cf the annular space which cat be taised as the grout is applied
The grout hose or ppe shall remain subtiietged in grout during the entire
application: ot
(C1 Otkei. Grout maybe emplaced in the annul w space by srcr.ity flow in such a
way to ensure complete filling of the space Gravity flow stall not be used if
watet or any s'isible obstruction is present in the sneular space withm the
applicable minimum pout depth specified 111 Subparagraph i'ft(l) of this Rule
at the tune of grouting. with the exception that beatcnite chips or pellets may
be used if wa'er is present. tf designed fc: that purpose.
(f) If a Role of this Section requites et outing of the casing to a depth ereatet than 20 feet
below land surface, the pmupir„g 01 pre-vnre method shall be used to srs out that
pcitsoa of the borehole deeper thtm 20 feet below land surface, with, the exception of
beatcaite chip-: and pellets, used ic accordance with Fait (fM4)tC 1 of this Rule.
<61 If an outer casing is installed, it shall be grouted by eithei the pumping 01 pressure
method.
11
D-13
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ENM-Emimmmitfai3imagemeat IS.4 XCAC .0100
(~'i Bensciiufe cbipi 01 pellet-: jliall be used in compliance with all manufacture!1;
tnvaiicaoc^ including pie-screening tlie material to elmunate &te-trake4 panicle'...
installation tat*. liydration methods. taaipuis, aod other measures to prevent
brid,gmg.
'Si Bentoaite from shall net be used to seal zones of water with a chloride concentration
of 1.500 aiillisram-:, per liter or gteo.tet
; Pj The well shall be Rented within seven days after the caiine is set.
flOi No additive1,, which Will accelerate the process of hydration shall be used in a cut fc:
thermoplastic well casuist.
< 111 Where ei outing is teqmred by the pievisions of this Section, the grout shall extend
outwntd ui all directions ncm the easing wali to a minimum tliiclxess equal to eiihei
cae-thitd of the diamete: of the outside dimension of the casing or two uicfc.es.
whichever is greater, but sc ao case shall a veil be required to have an annular snout
seal thickness zreate: than ioia niches,
; 12 i For wells constructed m locations where flcwine artesian conditions ate eacoutiteied
or expected to occur, the well 'iliall be adequately grouted tc< protect the artesian
artufei. prevent erosion of oveilyin? material and confine The flow within the casiae
if; \Yell Screens
ill The well if constructed to obtain water fioa\ ai: unconsolidated lock for to tic a shall
be equipped with a screen that will pieven; the entrance of fornratica. material rate the
'.veil after the well hat. been de-. elcj.vrd aad completed
;2.i The weil screen ".hall be of a design to permit the optimum development of the
aquifer with minimum head loss cony,teat with the intended irse of the weil The
opeiiia.es shall be designed to pi event clcfiztnj and shall be free of roush edges,
uiegulcttities oc other defect;- that aiay accelerate or confiibute to ceac-skc. ot
C logging.
(3) Multi-screen we Ik shall tot connect aquifer s oi zones which have difference:, m
watei quality ivhich would result in contamination of an}- aquifer or zone
ihi Gravel-,rad Sand-Pa eked Wells,
:'l! In constructifie a eravel-or sand-packed well:
fA> The packing material tlall be composed of quartz, ftasite or umiiai mineral
or rock materia! aad shall be clean. of uniform size water-washed aad free
from clay. silt. er ether deleterious material.
lB i The size of the packing material shall be determined from a tiaic size
analysis of the formation materi.il and shall be of a size sufficient to prohibit
the entrance of formation materia! into the well in concentrations above those
permitted by Paragraph u) of this P.ule
sC j The packing matetial .hi L be placed in the a insular space around the screens
and casing by a fluid citcuiitica method to ens-ore accurate placement and
avoid bridging
(D;> The packing material shall be disinfected
;2j The packing material shall not connect aquifers oi zones which have differences ta
water quality that would ressrit hi contamination of any aquifer ot zone,
U) All water supply wells shall be developed by the well contractor. Developaient shall include
lemovai of formation materials, mud. dnlkui fluids and additives such That the "vater contains no
more than:
1) fr. e lELilhliters pei hter of settle able solids; and
;2 i 10 NTUi of turbidicv* as sw-speaded solids
12
D-14
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EXR - Em irmjiieiskrl Mamgem ent
15.4 XCAC ,&im
Development does act require effort-: to reduce x eliminate the presence cf dissolved ceastirrtenn
which ate rcdiseaotr, to (he ground w.itei quality 111 that a:ea
tj) 'Veil Head C cmptenec.
(1! Access Post. Every water supply well shall be equipped with, a usable access port or
atr line. except those with a tsr.ilfi-pipe deep well jet pump cn adaptei mounted ca The
well casing or well head. and wells with casuiz two inches or less in diameter wfcete a
suction pipe is connected to a suction lift pump. The access pert shall be at least cue
half inch inside dtametes -ifperiiig sc that the position of the wates level can be
detemtiaed at any time. The pen shall be installed and maintained an such nianaei as
to prevent entrance of water ot foresees material
{2) Well Contractor Identification Plate
I A; An identification plate. showing the well contractor mi certification number
and the uifo juration :peciiied in Part fj)i"2j(E} of this Rule, shall be metalled
on the well wittia "2 hour., after completion of the tit tiling
iB'i The identification plate shall be constructed of a durable weatheiproof.
rustproof metal. ci other material approved by the Department as equivalent.
iC) The identification plate shall be permanently attached to either the
abevestownd portion of the well casing. outface gtetit pad cr enclosure floor
around the cabins where it is readily viable and in a manner that does net
obscure the infomiation cc the identification plate.
(D s The identification plate shall act be removed by any pet ^ca
(E j The identification plate shall be stamped to show the:
U,i total depth of well:
(ii} easiest depth (feet) and inside diameter i inches):
i.iiij screened intervals of screened we'd';.
(ivi packine interval of irnvel-er sand-packed well-::
i v; yield, in sail on: per uiiui/e fspm). or specific capacity in gallons per
minute per foot of dr awdown (epni ft.-dd).
fvi> static water level and date measured.
(vu) date well completed: and
(viiij the well construction permit number or uuinbe:.. if such a permit is
required.
'3! Pump Installation Inforinariou Plate
(A; Ar. information plate, stowing the well contractor and certification auaibei or
the person installing the pump, and the information specified m Pari
of this Ride. shall be permanently attached to either the aboveground portion
of the well ca::ni. surface zror.t pad or the enclosure floor, if present, where
it is readilv visible and in a manner "hat does not obscure the information on
the identification plate within "2 hows after completion of the pump
installation:
(B) The difbiimtion plate --tall te cons:meted of a durable wateiproof. rustproof
awal. or other material approved by the Department as equivalent,
IC) The information plate shall not be removed by any person, and
113} The iaretmaticm plate jhall be stamped ct engraved to stow the:
(i,i date the pump was installed:
(ii!- the depth cf the pump intake: and
(iii.i the hot sepowei ratins cf the pr.nip
;4i Controlled flow, Eveiy mtesum flowing well shall be constructed, equipped and
opeiated to prevent the unnecessary discharge cf water Flew skill be completely
13
D-15
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EXR - Environmental Management
ISA XC'AC .616{i
topped tiniest the ditehaige is- for beneficial ir,e and only fci the dtnratiou of that
beneficial we Flow: di-tcliarae control thai! be ptovided to cocveive the 2iov-:idwater
te'-orace and prevent 01 ledtice the loos of arseuaa hydraulic Lead. Flew control may
cotasitt of valved pipe coaitecttoa-;. watertight pi-mp coonKtwas. leceivias tank,
flowing well pitlew adaptei. packei 01 othes methods approved by the Department to
prevent tte lots of aiteikia liyctianlic head aad step the flow of wates a-; relet eaced in
G S. S~-SSi,d) Well owner; ire reipoctibte fci the operation and maintenance of the
valve.
i,51 Pitlew adapter. os pttless units are allowed as a method of '.veil head completion
under the fcJlowMtg conditions:
lAJ Design. installtitica and perfoiccitice itaudaidt- are those specified ill P AS-
PIC)-*;. which it- hereby incorporated by refeseace. kcfcdaig wbieqitent
amendments and editions. and caa be obtained iesxt the Wate; System
Council National Programs Office. 1101 SO41' Street. N 'V.. Suite 500.
Washington. DC 2C00" a; no coot,
iB.i The pities, t. device is compatible with the well citing,
iC) The top of the pitless unit extends at leas.; 12 inches above land swface:
|D} The excavation t.iwTowcdiag the casing tad pitlew device is filled with grout
from the top of the casuist srotrt to the laud surface; and
lE) The pitlets device hat an. access pert.
>'«>) All openings rot piping. waias. and rents iiall ecter intc the well at least 12 jcche;
above land surface. except vh«e pstleot. adapts1s or pitless ttaits ate r.s>ed. and shall
be adequately tea led to preclude the ecftaace of contaminant! into the '.veil.
H;:re\y .Yew .ii.T.lwin 6.S 6~-3S7-S3.
Eff- Fi'frtijr, 1, JP'd'
AmendedEffl M? 14, -691, December 1,1992, SLvvh i. 19SS, September I !PS4
April :o, i?~: ¦
Temponv^ Amendrnwr Erff .Jwfirr i 1601'
Ame.nded'Effi September 1, Z69P'August 1 1602,
15ANCAC within the aquifet.
D-16
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EXM - Ejirirmimema! Jfmtmemem
a
ISA XCAC .0166
i fi Ike well constiiictiw; materials shall be compatible with the depth of the well and any
contaminants to be monitored 01 secoveied
(e'i The well shall be constituted m such a mamier that water c; con'aimnants front the land, sv.n'ace
cannot migiate along the borehole annv.lus kite any packing material ot well saeea. area.
(t) In non-water supply wells. packing niateital placed atound the screen shall extend at least one
fcot above the top of the scieen Unie-ss the depth of the screen necessitates a thinner seal. a one foot
ihicfe seal comprised of chip ei pellet beatenrte m otber material appzeved by the Department as
eqiuvaleat shall be emplaced directly above and in contact with the packing material,
I ij In noa-water supply wells. grout shall be placed in the annular space between the outermost
csmiis and tine boseliote wall from the land surface to the top of flic bentonite seal above any wel:
screM. or to the bottom cf the casing for open end well-:. The grout shall comply with Pa:an apt ie)
of Rule .DIOT of this Section except that the uppei tfcree feet cf grout shall be concrete 01 cement
grout
(jj All Welti shall toe fronted within seven dap after the casing is set. If the well penetrates any
water-be amie zone that cons ami contaminated cr saline watei. the well shall he fronted within cm
day after the casing is set.
it! All non-water supply wells, including tempo tarv •.veils, shall be seemed with a locking well cap
to enstwe against imauthoiized access and use
it) All noil-water supply wells shall be ec tupped with a steel outer well casing o: fhish-ciouat covet,
set is concrete, and other measures sufficient to protect the well from damage by normal site
activitie-.-
(nii Any well that would flow under natural artesian conditions shall be • -alv«l so that the Sow can
be legi'.latei
(it] In noa-water supply wells, the well casing shall be terminated no less than 12 inches above land
surface unless ail cfthe following conditions are ate;:
iTi site-specific conditions directly (elated to bt-smess activities. such as vehicle traffic.
would en-da age: the physical integrity of the well: and
{2.: the well head is completed in such a manner so as tc preclude sitsficial contaminants
£oiii enteting the well
(o) Each non-water supply well shall have peinianently affixed an identification plate. The
identification plate shall be constructed of a duiabk, waterproof, rustpioof metal or other material
approved by the Department as equivalent and shall contain the following infoimotion:
(1) well contractor name and certification number.
{2} date well completed.
;'.31 total depth of well.
\4's a warning that the well is not tot watet supply and that the groundwater may contain
hazardov.s materials.
(:•depth( s} to the top i s :• and bo ttoniiYf o f the s creec-f s}: a nd
(6i the well identification nitoibei os name assigned by the well owaei,
fp) Each ncn-water supply well shall be developed such that the1 level of turbidity or seftleable solid',
doe: net pi ec hide accurate chemical analyses of any fluid samples collected or adversely affect the
operation cf any pumps c; pumping equipment.
i.ftj 'Yells constructed for the purpose of monitoring or testing for the presence of liquids associated
with tank; regulated under 15A NC AC 02N (Catena and Standards Applicable to Underground
Storage Tanks) shall be constructed in accordance with i 5A NC AC 02N .0504
(r,i Welis constructed for the purpose of monitoring f« the presence of vapors associated with tanks
regulated uadet 15A TsC AC D2TC stall:
{11 be constructed ui such a manaei as to pieveat the entrance of svirfkial ccntarainants
or water into oi alongside the well casing: and
D-17
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EXM - Etnirmmtentft? Management
ISA XCAC ,016(1
(2! be provided '.villi a locks'?!? cap in cider to reasonably ensure agauiit isiar-theiized
acceji and ose,
i,-;;. Tetapciraiy well-; and all other Ecc-warei it.pply wells shall be cootiuc:ed in inch a manner ao to
preclr.de the vertical migiaticu ofcon'amuianr.. ^.vithic aad along the bciehole channel
JStrwy .Yore, G.S. S"S"; S~-$S,
Ef. Feb; 'uin 1 1 ¦
-iiHt"D PIMPING EQUIPMENT
(a,I The pi;mpkf capacity of the pntnp vhatl be cons:: tent with the intended roe and yield
chaiactmstics of the well.
(b 1 The tr.mip and i elated eqv.ipmen: for the well shall be located to permit easy access and removal
fo: lepaix and maintenance,
(c; The base plate of a pump placed Ahectty eve the well shall be designed to foiai a watertight seal
with the well casing or pump fe-jadation
l dj la ur-tallaaoas wheie the pump is not located directly ever the well, the aaav.lai space between
the casing and pump intake or discharge piping shall be closed w.*t w a'ertight teal
(ej The well head shall be equipped with a screened vent to allow for the pressure changes within the
well except it a s-vtction lift piiosp ot smgfe-pipe jet pump is used or anesioa. flowing well conditio tr,
are encountered.
I ft The person in-stalling the pump m any water supply well shall in jail a threadless sampling tap at
the wellhead foi obtaining water "samples except:
(1! la the case cf taction pinup or offset jet pump ins.tatlatio;ct> the threadiess -sampling
tap -jliail he installed or. the letum ipres-suie't side cf the pump piping, and
(2'i la the case of pulesi. adaptei installations. the threadiess sampling tap shall be located
immediately r.psneaov cf the water storage tank
(5: If the wellhead is also equipped with a threaded how bibb ic addition to the
thieadiess -.ampling rap. the hose bibb shall be fitted with a backSow pieventet oe
vacuum breaker
The thieadiev., sampling tap shall be mmed downward, located a ammmai cf 12 inches above land
¦surface. floor. or well pad. aad positioned such fhar a watet sample con be obtained without
interference Som any part cf the wellhead.
(gii A. priming tee shall be installed at the well head in conjunction with office jet psrnip installations,
(hi Joint-: cf any -suction lute installed usadergicuad between the well and pump shah be tight under
system pie-, sure
U) The dicp piping and electrical wiring i;>ed 111 conaectioa with the pitoip shall meet all applicable
utdenvriteK 5pecificaitc at-.
i'j j Ocly potable watet shall be wted fos pruning the pitnp
H;:"ciy Nov Aurk99 December I. }PP2, April 10. 19~S.
16
D-18
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EXR - EnvfrnHmemtt!MiiHagemmi 15.4 XCa€ .0106
15A NC AC (I2C .MM WELL IE SIS FOR YIELD
i.'a! Evfrv domestic well shall be tested for capacity by cue of the following method'/
(1) Pump Method
I A) select a penmneet nieasiuuia point. such a-; the top of the casing:
iB i tneasuie and recoid the italic water level below oi above the measuring point
prior to starting the pump:
i'C i measure mo tecotd the ctacSintge rare at interval t. of 10 niitiittes or lei-;.
rD> n:ea s-.ue and record water levels using a steel or electiic tape at intervals of 10
tmaute-. or less.
[E i continue the test foi a peuod of at lea;1; one ion:: and
iT'< make measurements within an accuracy of plus or minus one nick
(2) Bailei Method
i A;- select a pemianeut meamtiiia pome. ouch as she fop of the caskg.
:B i measure and record the static wales level below or above the measuring point
piioi to starting the barling procedure:
i C i bail the watei on: of the well as rapidly as possible fct a period of at lea it one
how: determine and icoord the bailing rate jui gallons per minute at the end of
the bailing period, and
iD; awasote a ad record the water level immediately aftei stopping bailing
process.
.3 i An Rotary Drill Method
IA J measure and lecotd the a mount of water being injected into the well during
drilling operations.
iB i measure and record the discharge race in gallon1, pet minute it intervals of one
how oi lev, du; me drilling operations;
|C j after completion of the drilling. continue to blow the water ov.t of The well for
at least 30 minutes and measure and record the discharge rate in gallons per
minute at mtervak of 10 minutes oi lev* dining the pencd: and
lE) ;• measure and record the watex level immediately after discharge ceases.
•;4j An Lift Method Measurements thai! be made thioueh a pipe placed m the '.veil The
pipe shall have a aiiciaroai inside diameter of at least five-tenth-:, of an met and dial]
extend fioni top of the well head to a point inside the well char is below the bottom of
the air Hue.
(A ;• Measure and secord the static water level prior to starting the air compressor.
i,B i Measure and record the discharge fate at intervals of 1C minutes oi Levi:
i'C) Measitre and tecoid the pumping level using a steel or electric tape at
interval", of 10 minutes at less: and
i'D'i C ontinue the rest for a period of at least one hour.
(b) Public. Industrial and litigation TVeils, Every ladu-stiiai or irrigation well and. if requited by role
adopted by the C ommission for Pr.bho Health, ever." well cervine a public water supply system upon
completion, shall be rested for capacity by the following ot equivalent method:
! 1) The water level in the well to be puaiped and any observation wells shall be
measured and recorded prior to starting the test.
(2j The well shall he tested by a pump of sufficient size and lift capacity to test the yield
of the well, consistent with the well diaatetet and purpose.
>s5l The pump shall be equipped with sufficient throttling device: to reduce the discharge
late tc approximately 25 percent of the maximum capacity of the pump.
•''4) The test shall be conducted for a pencd of at least 24 hows without interruption and.
except for wells constructed in C oastal Plain aquifers, shall be continued fct a period
17
D-19
-------
EXR - EminmmenmlMnmigemem
i5A xc ac Jim
of a* least four hours after the primping watei level stabilizes (ceases tc decline) If
the teal water req^aeawtus fct well-; no: serritie a public water supply system are
less tliaa ICO. 000 epd, the well shall be tested for a period and m a ma one: to -.hew
fiic capacity of the well or flint ike capacity of the well is 'Sufficient to meet the
in'ended purpose,
(5) The p.unp discharge shall be set at a constant rate oi rates that can be maintained
tlu dishorn the testing period If the well is tested «it two or ii:c:e puaipiui rates (a
step-d:awdcwn tesfi. pumping at eact pumping rate -shall continue to the point that
the pumping water level decline's no tr.oie ttaa C 1 feet pet fcoia fox a peuod cf at
least fctn hours for eact piunpiae rate, except fct wells cctistrocfed m Ctxv.iai Plain
aquifers. It wells constructed tn C casta! Plain aqiufeis. punipmz at w.cli puaipuig
rate shall coniuiue foi a- least foil! hems
<6i The pump discharge ;a!e shall be nwasiued by .111 ctifke meter, fbwmestt. wens o:
equivalent metering de-ice The metering device shall have ac accuracy within phis
or nimv.s five peiceat
CJ The discharge rate of the pump and tune shall be me.v.uied and recorded at intervals
of iO minutes ct less dialog the first two hours of the piinipiiis peiiod to; each
pumping rate If the pumping sase is relatively constant after the first two hows cf
pumping, discharge ajeasuiements and teccrdke may be made at '.onset tune
interval! but not to exceed one hour.
(Sli Tbi .* ar«r level m each, well aad time shall be measured and tecorded at intervals of
five minutes or less dismg the fu'sr hoia of pnniping and at intervals cf 10 minutes or
less din ma the second hour of pumping. Aftei the second horn of pumping. the water
level in each well shall be measured at such intervals, that the lowering of the
pumping water level does not exceed three inches between measurements.
<9j A tefereace point fos watei level measurements ^preferably the sop cf the ca-'ias)
shall be selected and seccided for the pvmpkg well aad each observation well to be
measured during the test All warer te'-el lueasutements shall be made from the
selected lefeceace points
(lG.i All wate: level measiiienients shall be made with a steel or electric tape cr equivalent
measwmi*: device
(11 "i All water level measarerneats shall be made within an accuracy of plus or annus one
inch.
(12i Aflet the completion cf the pumping period, measurements of the water level
recovery sate in the puasped welt shall be made fct a period of at least two hours in
the same maimer as the drawdown.
HmmrXore. .iwh.vin G 5. 8~-S~, $'-$$.
Iff. Ffbl HuMT j, j' -5 "o ¦
Amended Eff Stpxfflbirl. 2099, Apti! 1, 1001; Decmter i, 19$-' irptpm^T 1,
I9S4, Apnho, 1? ~1
18
D-20
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EXR - Emiromtieitfal Management
ISA AT.-It ,0100
15A NC AC 02C Jill DISINFECTIOX OF WATER SUPPLY WILLS
(a) Any person coir-f roc fine, tetanies. testing. or peifcraiiiis aiauateaance. or lmwltiug a pwmp in n
wates supply •¦.veil shall die.infect the well npoa completion cf con•.•trueticu. repair;. testing,
maintenance. ci pimip installation.
i.b) .An}' person disinfecting a well shall pet form disinfection. in acccsdance with the following
procedures,:
(1) Chlomiattcn.
)A; H>pccbk:i:« shall be placed it: the well k sitrfkieat qiMatiries. to piodnce a
chloime residual cf at Is a it 100 pans. pei million (ppni) in the well.
Stabilized chlorine tablets or hypochlorite products containing roagicstiiet,.
algaeades. oi othei disiafectaats shall iscc be used Chlorine te-jf -i-tiip«
otlie quantitative tevt method's shall be used to coufiim the concentration of
the cliioriiie le-iidnal.
[Note: About three ounce's of hypochlorite containing 65 percent tc ~'5
percent available chlorine is. needed per 100 gallons cf water for at least a 100
ppin chlorine lestdml At- an example, a well having a dtanietet of tix mcteo.
has a volume of about 1 5 gallons pet foot. If the •¦.veil tat, 200 feel of watei.
the minimum amount cf hypochlorite leqiiired would be 9 ounces, ij.5
gallons foot x 200 feet = 300 gallant, at 3 ounces pei 100 gallons. 3 ounces. x
3 = 9 ct.tc.ce-; ;]
(B) The hypcchlcsre 'iiall be placed in the well by one of the folic v/ine ot
equivalent method; •
u) Granv.las hypochlorite may be dtepped xe the top of the well and
allowed to t-ettle to the bottom: oi
till. Hypochlorite ooluticnt shall be placed ui she bottom of the well by
'.nice a baiter or by pouting the ¦ioamoa through the drill rod. hose. oi
pipe placed in the bottom of the well The solution shall be flushed
out of the drill rod. hose. or pipe ty using watei cj air.
|C i The water in the well shall be agitated or cit'culated to ensure thorough
drspet sior. of the ehlciiae.
|D) The well casing. pump cohtaai and any other equipment above the water level
it the well shall be ringed with the chlorine solution as a part of the
disinfecting piocess.
lE I The chlorine solution shall stand m the well for a period of at least 24 homo.
iF! The well stall be pumped until there it no detectable total chlorine lesidr.al in
wjtet pumped iom the well befoie the well it placed in me
f2\ Other material'., and methods of dxsinfect)on, at leat,t as effective at- those ui
Subparagraph (1) of this Paragraph. may be used upon pi tor appicvsl by the
Department
Hteron .iifrfoitfr, G. S. S"-3~, S~-"S
EtT Fchnmr, J. i5"o"'
EjT. Scrvmbci ], 169J ApnS I 2091 ¦ December 1 ]pp.1. Jar, 1. 1PSS,
Sij-umber I, I9S4
D-21
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E.VR - Envirmmeimi! Mtmagewettt
ISA Xl'AC ,01 (JO
15ANCAC 02C ,0112 WELL MAINTENANC E REPAIR; GR013D1TATER
RESOURCES
i, a i Every well shall be tn.uatatced by she owuei ui a condition whereby it will conserve a ad protect
the groundwater fesottrce-;. and whereby ix will not be a source ci channel cf contamination or
pDilution :o the water supply or any aquifer, or the well shall be permanently abandoned in
accordance with the lequsieawat; of 1A TsC AC OX .0113(b,i.
(bj Dewateimg well-; shall he permanently ab.¦widetied m accordance with. :te requirement', of 15 A
TsCAC 02C ,0113(b) within 30 day; of c ompletion cf the dewatencs activity.
(c) All materials used m the maintenance, replacement, os repair of any well shall meet the
requirements for new installation.
(d) .Broken, pnac tuted oi otherwise defective ct unserviceable casing. screens. Sxtntes. seals. or any
part of the well head '-hall be repaired or replaced, or the welt shall be permanently abandoned
purcumi! to the tequnenienrs of Rule .0113(b) of this Section
(ej NSF International (^MSF1 approved PVC pipe rated at 160 PSI maybe used for linei pipe. The
aauular space around the liaet casing shall be at least five-eighths niches and -iball be completely
filled with aeat-ceawat grout « ;.md cemetit front, The well liner shall be completely flouted
wtthm ill working day-; aftet collection of water ; ample; o; completion of othei testing to confirm
proper placement of the Irnet or within 10 woikmg day; aftes the line; ha;, been m .tailed if no
sampling or testing i; p« formed.
if) No well shall be jepatred or aiteied such that the c-utet casing i; completed lev; than 12 inches
above land surface. Any ziout excavated or removed a; a result of the well :epau shall be replaced m
accordance with Rule .01C~(f,i of tin;. Section
(a) Well rehabilitation by nc tic out mucus chemical teeatoieat shall be conducted using method; and
nHteiia:; approved by the Department based or. a demonstration that the material; and method; tise-d
will net cteace a violation of gteoadwater standaid; in 15A NCAC 02L or otherwise reader the
gicundwater unsuitable for it; intended be;t usage after completion of the rehabilitation.
JWrrft;»Y„V
-------
£XR - Emirotimema!Management
15.4 XCAC.6166
«3) Except in the rase cf tempoiary wells and aicmtonng wells. the well shall be
disinfected in accctdaoce w«fc Rule 01 1 hl>i(l)(A) ttuough .OllltfrKlMCi of thiv
Section.
(41 la the case cf gravel-packed wells ui which the casing and scieens hare not been
removed. Eeaf-ceoienf or bentcnite shitry grout shall he injected ktc the well
completely Silks it ftcul the bottom of the casing to the top
(51 Welts coavtiucted m unconsolidated formationi -.-tali be completely filled with gtcut
by introducing it through a pipe extending to the bottom of the well which can be
raised as the well k- filled
>,6\ Wells constructed ia consolidated rock formations or Stat petettate zones of
consolidated lock may be filled with gic.it. sand, gravel ct dull cutting opposite the
zcaes of coasolidated iccfc The top cf any sand gravel or cutting fill vha.ll terminate
at leas: ID feet below the top of the consolidated rod: es five feet below the bottom of
casing. Ckcvit shall be placed be gaming 1C fee; below the top of the consolidated
rock or five feet below the bottom of casing m a maane; to ensure complete filling cf
the caving, sad extend up tc land surface, Fot a ay well in which the depth of castas
or the depth of the bedsoefc is no: known ci cannot be cotnioied. the entire length of
the well shall be filled with grout up to land surface
'ci For bored '.veil; « Land dtiz water supply wells constructed into unconsolidatedmaterial:
(It The well shall be disinfected k accordance with Rule .OlllfcXlHA) tlrovtgh
.01 llib'n, 1 ft Ct of this Section
(21 All plumbing ot piping in the '.veil and any ether obstructions inside the well shall be
teaioved atom the well,
i 3't The uppermost three 5?et of well casing stall be removed ftca: the well.
(4) All soil oi other subsurface material present down tc the top of the reaj.uniae well
casing shall be removed incli'.ckng the material extending to a width of a: least 12
inches outside cf the well casing
(5i Xhe well shall be filled to the top of the remaining casing with groat, dry clay, or
material excavated during construction cf the well If dty clay cr material excavated
dntine construction of the '.veil is used, i? shall be etaplaeed its lifts no mote thai: five
feet thick, each compacted in place piioi :o eniplacement of the next lift,
;6'i A six-inch thick conctete grout plug shall be placed on top of the lenmcuag casing
such that it covers the entire excavated a tea nbove the top of the casing, including the
aiea extending to a width of.it leas? 12 inches outside the well casing.
(7i The reniaicdei of the well above the cocciete phig shall be filled with grout or soil
-------
£\R - EmimmtmiMAianegemeM
ISA SCAC .0106
: 11 the well contractor is responsible fcr well abandonment if abandonment is requited
because the well contra etci icipiopetly locates. constructs. repaus os complete the
well:
:_1 the person who in-;talk-, repairs or removes the well pump is responsible fcr well
abandonment if that abandonment is required because of improper well pump
installation. it-pan or lemovai: or
(3) the well conttactor lot individual) who conducts a rest bc;iag is responsible for its
abaadciBiient at the time the test botiag is completed and has fulfilled its useful
put pose
jfcfcn'2 oro. .iirri.'om G S. S"-S~; ,3
E'T. rV6? in-tn 1, ]?~6'
Amended Eft', Scpumbw 2. J90? April J. 1061. December 2. 199J- Sep:embe-! 1,
jpol4/ Ap}ll _(). j y I*.
15A >C AC CUC ,0114 DATA AND RECORDS REQUIRED
(a) 'Yell (I uttke-;
;ij The well contractor shall collect and furnish samples cf icimation cuttings to the
Division £om a well the well centi actor has drilled when such samples aie leqtiested
by the Division ptioi to completion cf the drilling or boring activities.
•'21 The well ccatiactoi shall obtain samples or representative cuttings fei depth intervals
cot exceeding 10 feet. The well coatiactor shall also collect tepreseatattve citttic.es as
depths of each ciruise in formation.
(3) The well contractor shall place samples cf cr.tiuigs in containers furnished by the
Division and such containers shall be filled, sealed and labeled with indelible-npe
maifcers. showiest the well cwaei. well camber if applicable, and depth interval tlie
sample tepresents
{41 The well contractor shall place each set cf samples in a coiiukieivsi showing the
location. cwnw. well araibei if applicable, the well contractor's came, depth intetvai.
and date,
;'5j The well contractor stall resaia samples until deliver.- instructions ate received from
the Division or foi a penod of at lease 60 days after the well tecord rbttn jGW-ll.
indicating said samples ate available, lias beet ieteived by the Division.
-*.6| If the well contracted fund she - .amples to any person or agency other than the
Division, this dees net constitute compliance with the department's request and shall
not i eli eve the well ccatiactoi of his or het obligation to the Division.
(b) Reports
An}- person completing ct abandoning any weli shall submit to the Division ?. tecoid
of the construction or abandonment. Tor water supply wells, a copy of each
completion or abandonment record shall also be submitted to the health department
responsible fa the county m winch the well is located. The seeord shall be on foiuis
provided by the Division and shall include certification that construction or
abandonment was completed as leqtared by this Section, the owner's name and
address. latitude and longitude cf the well with a position accuracy of 100 feet or less,
diaaseter. depth, yield, and any otiiei iiifotniatioa the Division may require as
necessasy to depict the location and construction details of the well.
The certified teccid cf completion ct abandonment shall be submitted witliir, a period
of 50 days aftei completion oi abandonment.
D-24
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ENR - Environmental Management ISA AT.-K ,0160
•;3) The fcmithicg cf records to any pencil or agency ether thaa the Division does cot
constitute compliance with the reporting reruueir.eat and shall not seheve the well
coatiactcn of his 01 her obligation to the Division
JiiztarXoK. Aurh-.vlr, G. S. S~-S~; S~-SS.
Efj. Febi^ar, I,
Amended Eft" September 1, 1009 April 1, 2901 December J, 1992; September I,
1964 ApnF20, 19~5
ISA NC AC 02 C ,011 ? DIAGRAMS AND FORMS
2\orc. Aurhailr, &.S. S~-5~;
Etf. Feb) Jnny J, 19~6¦
Amended Eft' April 26 I9"S,
Repealed Eft", September i. JiS-i
15A NC AC 02C' .OIK DESIGNATED AREAS: WATER SITPLY WELLS CASED TO
LESS THAN" 2D FEET
1 a) la octiie area'- the test 01 only source of potable watei owppty exis.lt. between ID and 20 feet
beicw the v.uface of the land. La consideration of this, watei "Atpply v/elis may be ca'-ed to a depth
let', than twenty feet m the following aiea:,:
'1) in O.tmtuefc County in an area between the sound and a line begkniEg at the end of
SR 1150 neax Cunituck Sound, theace nonh fc the end of SP. II33. thence north to
the end cfNC 155 at the intersection with the sotuid
•:,2i 011 the Oiitet Batiks ficn; the northern corporate limit cf Nasi Head, south to
Gertie eke Met:
<51 all areas lying between the Ictracoastal Water.vay and the oceaa from New PJver
Inlet scv.th to New Topt ait Inlet and
{41 all ateao lying between the Int;ac casta! Waterway and the ocean train the C ape Feai
Rivei scuth to the South Caic-hna line.
fb) The Daector may designate additional nieas of the -state whete watei supply wells may be cased
to a depth lev, than 20 feet. To designate such area:. the Director thai! find:
f 1) that the only or be.-" wiuce of diading water m the area exists between a depth of 10
and 2D feet below the surface of the bad. and
< 21 at utilization of this source of water 111 the area it 111 the beot iutesest of the public
icj In all other aieas. the soiuce of water shah be at leavt 2C feet below lisid st'.rface, except when
adequate r twenties ef potable water cannot be obtained below a depth of 20 feet, the souice of water
may be obtained irons unconsolidated rock formations at depth: le. s than 20 feet provided that:
i.li tr.rlsaeat watei of acceptable quality,- for the intended woe can be shown. to the
satisfaction of the Department that it it not available to a lninmum depth of 50 feet:
(2,i the prop0-;ed source cf water is the auxinxr-a: feasible depth above 20 feet, but in no
•rate less than 10 feet: and
(5) the regional office of the Departnteni is notified prici to the construction of a well
obtaining watei ft eta a depth between 10 and 20 feet below land surface
Hi: to 111 .Vow. dMdm ir, &JL S7-& 7,
Etf. Aptll 26, 19~S¦
Amended E;T September 1. 1G09, Deeenibei I. 1992; July I. 19SS, Seprcmber 1,
1984.
23
D-25
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EXR - Emirmmemol Mamwemeiit
g
i5j \ca<: ,om
15A NC AC 0:c ,1)11 - DISIGNATED AREAS: WATER SUPPLY WELLS C ASED TO
MINIMUM DEPTH OF 35 FEET
Water supply wells cciac.tr.icted m the following area-:- ot within 400 feet of rlit following areas stall
be cased to a aiitiiinuiii depth of 35 feer
(1 'I Anson C ouaty generally west of a line teammng at the intersection ef tie runs of the
Pee Dee River and Buffalo Ctee-k. theuce generally neitlieast to SR. 152". thence
generally south aioag SR. 162" to the interaction with SR 1652. thence generally
west along SR 1632 to the intersection with US 52. thence generally south along US
52 to the aifersec?icn wifl: SR 141S. the ace generally soirtlr.veit along SR. 14-1S to the
intersection of NC 2IS. thence south along NC 2IS to the intersection with US 7-1.
thence eeoeially west alone US "4- tc the intersection of SR. 1251. tliecce generally
southwest along SSL 1251 tc she intersection with SR 1240. thence generally southeast
along SR 124C lo the intersection with SR 1252. thence genet ally south alone S3.
1252 tc the iiitet section with SR 1003. thence generally west alone SR 1003 to the
Una County line:
(2) Catamis C onatv genet ally east of a liae tegioain; a: die mtenecucn cf SR i 113 and
the Union C curry line, thence generally northeast along SR 1113 to the intersection
with SR 1114. thence generally east along SR 1114 to the Stanly County line, theuce
geaeialty northeast atoag the county line to the intersection with SR 5100. thence
generally nontext along SR 1100 to the intersection of with SR 2622. thence
generally southeast aloae SR 2622 to the inter, ecu on with. SR 26!~, thence generally
northeast along SR 261" to the intersection with SR 2611. ther.ce generally north
along SR 2611 to the iatei section with NC "3. thence generally east aloof NC "3 tc
the kites section with SR 2453. thence geaerally northeast along SR. 2453 to the
intersection with SR 24-44. (hence gene:ally northeast along SR 244+ to the Rowan
County Line:
(3! Davidson County generally east of a law starting at the intersection of the nm-s of
Abbotts Creek and the Yadkin Rivei ia H12J1 Rock Lake, thence generally north
along Abbotts Cseek to NC S bridge, thence geaerally north along NC S to the
intersection with Intel state 55, thence gene: ally northeast nloag Interstate SJ to the
intersection wish US 64. theuce generally southeast atoag US 64 to the Randolph
Comity line:
<4) Montgomery County generally west of a line beainmiig at the intersection of SR 1134
with the Randolph C cunty line, thence generally south atoag SR 1134 to the
intei section with SR. 1303. thence genesalh' south along SR 1303 to the intersection
with NC 10?. cheace generally southeast along NC 1C9 to the inter section with SR.
II5C. thence senemliy south along SR 1150 to the intersection with NC 73. thence
geaerally scr-tliea-.t atoag NC "3 to :Le intersection with SR 122". thence generally
east along SR 122" to the intersection with SR 113C. thence gene: illy northeast along
SR 1130 to the intersection with SR 1132. thence generally southeast aloae SP. 1132
to the intersection with SR 11~4. thence generally east along SR 11 "4 to the
urset section with NC IttP. thence generally north along NC 109 to the intersection
with SR 15+6. genet ally southeast along SR 1540 to the inter section of SR 1543.
thence general!}- sonth along SR S543 to the inter section with NC "31. thence
generally west aioag NC 731 to the arte!section with SR tUS. thence generally
southwest along SR 11 IS to the intersection with SR 1116. thence generally west
aioag SR. : 116 to the inter section with NC 109. thence generally south aioag NC 1CP
tc the intersection with the Richmond C ountv line:
24
D-26
-------
E\R - EmiromaettMi Maiiiigemeui
15AXC.4C .0100
{5} Randolph Count)' geueially west cf a lice begiiimae at the lateftectioa cf US 64 with
the Davidson County line, fheace generally enr,t along US 64 tc the mfeii.eelion -with
XC 49. thence generally iouthwes: aictg NC 49 to the irteioecacn with SR HO"",
thence geaera'.ly oct-th along SR 11 ©7 to the ioteiurctira witli SR. 110f. thence
•icnitbea'J along SR 11C5 tc the intersection with the Montgomery Cor.n:y line.
(6,i Rx;ritiofied tvith the deci-noii of the Secretary may commence a
conteoied case by films 3 petition itadei G.S. : 50B-23 within 60 dayv after receipt cfthe decivie-n.
25
D-27
-------
EXR - Emironmetttal Management
15.4 XCA( ,0106
.Vcv G S' S~-5S, 1503-23
E:t>: Apni :o, i9~y
Amended EtT. leprember L 2909, Aprd 1 1001; December 1, 1991' 'ieptewhci 1,
19SS, lepremher 1, 1QS4.
If A XC AC 0:c .CHIP DELEGATION
i a] The Secietarv i-i dele eared the aulhon-- to siaat peimiicjoii fot well coi^tnicdcu. tuidei G,S
S~-S"
ibi The Secsetarv i» delegated the authontv to sire aotkes. ac4 up: order, ia vielstjoa-i uuder G.S.
8701
(c'l The Secretary ma}" srruit a vanance &aa aav CDiiirmction jtacdard. or tte approval of altercate
cocitnicaca cieihcdi or aiateiials. specified i;nder the Rules oftJii-; Section.
H\: is it Xore. A urk oi ir,¦ G, S'. 1 4 : - J J 5 J i aI < •
Etr Mairn i, 1955;
AmendedEfT Ocrober 1, 2009, December 1, 19P2,
26
D-28
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TOWN OF ABERDEEN WELLHEAD PROTECTION PLAN, DECEMBER 2012
i!
WELLHEAD' PROTECTION PLAN
V!
a
ii
. . : • 1 for- : '
Tie Town of Aberdeen,
Moore Co«nty;N©rfh Carolina
' •' PWS 3D #§3-63-020^ •'
December 4,2012
¦ Revision 3
II
Bf.
AUG 0 5 2013
I
Mr. Rickie Monroe, Public Works Director ;
Town of Aberdeen
115 North Poplar Street
Post Office Box 785
Aberdeen, North CuroUaa 28315
<910)944-7012
uuaitt'i
D-29
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Town of Aberdeen December 4,2012, Rev. J - . . Page2
BACKGROUND : :
-' In 1914, Sa&lMidUig Water Act (SDWA) amendments aided Section 1421,
"State ftogains to Establish. Wellhead Protection Aims™, wticli requires each state to
' dewIop'ajjiogiim^o'^iotet^lJieadarm^imfUsBtlslrlBBrffctioiiftomKptaiiiinaals
• which may have any adverse affects on the health of persons". The term wellhead •
protection aiea (WHPA) is defined infte'law ax "the surface tod subsurface area
sumiuhdiiig a water well or wellMd, supplying a public water system, throogh which
obnbnamants are reasonably -likely to move toward and Mitels, tucfc water well or
wellfieH". North CseoHm's EPA-approved'Wellhead ftotcctiflil Piograk provides
technical rapport to teal governments .and public water supply systems' in their
' .endeavor? to develop and implement their own. Wellhead Irotecttai.Hans- (WHPPa).
. ' KoittiCani!iiti*so1jjecflwittteclioi|jlanistopr®Ticleapiocess
fir poMicwsfer system operate to iearn more about their'groundwater systems and how
to protect them. WeUhcad Protection Flaw aflow commaiMties to take charge of • ¦
protecting the quality of their drinking water by identifying awl carefully - managing areas-
that stqpply groundwater to iMr public welts, Implemajtatfan of a WHPP in North
Carolina is voluntary st the present.
*TBI»lJCTIOri: - ' : -- -
' Metiem is a small town in Moore County, North Cm®*, located ia tfc -
Sandhills of die Coastal Plain. The area was Oflginalj .settled by Scottish Highlanders,
ami was named Blue's Cms®® In 1818 the settlement was renamed Aberdeen. Tie
Town is located about 60 miles southwest of Kalrigb, the State capfol, aai about 80
miles east of Chariattte. In 2010, Aberdeen had a population of 63 50 ptople within the
corporate limits. The peculation experience^ seasonal increases because of fc attraction
of world-class golfing facilities and other amoilei mile- atea.rii« local economy Is
tas©cl on agricultuiv, industry, toittisin, and fetifeisfiwt
Aberdeen Is located entirely in the Sandhills. The 1915 Geologic Map of North
Carolina stows that the near swfsee sediments consist of the Middcnitcrf and. Finetnnst
-P©jja«i«e, wMoli .are typified by medium to coarse san&laced with. iafetmttfcnf clay
teases ami pods. The dominant feature of the Sandhills is a dtsep layer of iracansolidated
to poorty consolidated swlcial mad that otuJerliertie upland areas. The tennis is
characterized by rolling Mils with flat crests, and/altitudes. generally-tanging from 450 to '
55# fed. Local relief up to 200 fat is c-oisniMi.: Aberdeen Cieik, ®w major -drainage.
feature in flia*teMif--afth.ewdI% flows ggoera&yso^ through tie Tom - -'
The wtter dictation, system tas ifproximately 3,500 cotmections list Biipply a
«astoai.eil»seo£iBOi»fca5l600.|i6isoBs. At>wfcei>liaslat«iB«iinecfioiB-witli .,= '
Souttam Pines aod Moons County (Piragntt# system), and the Torn sells thews systems;
Mfstcr. .He ByScm has a^^?roximatcly 29 miles of distnbQtiOK lioe. iwrsjjt dai^^
D-30
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Town of Aberdeen
DecuidMr 4,2ftl2» Is*. 3
P»ge3
water use for the Town in 2010 was approximately 1,2 million gallons per day wife.peak
demand in late summer or early fell. .. ,
. He Town uses 17 water sttpply wells screened in the Sandhills aquiftr, wMcb are
inspected-daily, He f moping cycle for fine wells is less "ton twelve lows per well per
day and fie wells have an average yield of afccwl 175 gallons per minute anion average
depth of almost 200 feet. The jystem uses four elevated storage tanks with a finished
water slmge capacity of 1.6 miBtta. pilous to parade fttesstfre and storage fa the ,
distribution systsnL Chlorine is injected at tie wellheads,* W«ff 0OHlwtentWdK(iee
appet^} provided fte data, listed in TafcJel. : ; . ; .
¦ The Town-of Aberdeen is a. historic sonfheni railroad town that is p«ii to serve
its citizens wifc parts, good-tasting water. Aberdeen has a comprehensive website that
provides iafcmatioii on. water conservation, hydrant flashing malices, wellhead
protection,'witer fees, and hackflow prevention.; The Tcmta also its a recycling program
antlcoH«ts«cy«ltWcm8te(lds«cee¥eryiTi«»*'ecksrairMie- * ¦' .
L THEPLANNINGTEAM .
¦ A planning team was &rmed to develop a 1PMliead. Protection Plffls) for the Town
of Aberdeen. lie Wellhead Protection Committee (WPQ consists «f:
• McileMoiiiw,Pnbfic WoisDiiector
• Harold Watts, .Assistant Public Works Director ; .... •
» lames Robert Matthews, Water & Sewer Superirtjewknt - ,
• Cheiyl EWj AdniMstratlve Assistant • r'
KMiytles, Plsrtiang^Diwtorf;«l ¦ ,
» Keith Sterner,.NeriiCifolHia^insl Wafer Association. ; .. l
Tlie*Mc Works Director aiKlPlMiiiiiigDiecSDrwresiwDsiikfiirr ¦ ¦
impleaieHttng the plan. Hey have tteceplei lie ree«iiBiMiatiowpi»fe in the plan by
the WPC, lie- town ofAbestdetn'will begin implementation of the program iatmeiiaiely
following approval by the PpMe Water Supply Section of NCDINR.«d wilt .cowplete .
jmplemcBttion wiiMn ninety (90) days. ; . • • - •;;
Plan, the Administrative Assistant will stttanlt wMificafion' to the Pat-lie Wafer' Supj%
Section in aeearfsww wuh the schedule set forth in the ajqpmved IMP Plan.'
'II. BlSLINEAllNG THE "WBIiHEAD PROTECTION JUSJIAS:
¦' Aisieea's wells ate screened is tie Sandhills aquifer.' A modified calculated
fixed radios imefl»d. was. wed. delineate ft© wellhead frotwfion neat waadfc wetts.
' The calculated feted radius tecfaifHe uses the pumping tate of the weli s and' the •
D-31
-------
Town of Aberdeen £eoeiiibar4,2013,Itsv,3 . . PtygM
estimatei recharge to the aquifer to find the size of the ana around the wells that seeds to'
.. be protectel. Tie size of protection #rea was dcntbted/bccaiise the sands-of the aquifer
am highly baosmissive, aal could allow rapid transport of cQatsnuaasts.
, To.protect Aberdeefi's 17 wafcrsupplf wells, lie area. of lani surfaceliat
emMbuie® leetarge from precifjitafioa to the aquifer was- estimate!, To deUneaie this' •
are®, lie aquifer's rate of recharge was estiwatel ming a nap available iwm th© MUb-'
Water Supply Seefiom, Recharge to the' aquifer is high in the Sandhills aad is-'eitrnatetl
to be 600,000 gatfoMs per day per square mile.. The miaimum daily, pimping rate of fte
wells over • I2&our. cycle was also used to deteonine size of tie protection area. A
twdve-Jxttir pwmpag. cycle is osed because State repJafiops require that the yield of a
public water sujsply well provide the awage'dafly demand in twelve hours. .
* .. To delineate its wdlhead protection areas, circular ar«sw« set op. arotiadeacft
well., C:nrai«rweflli«dpTOtEctioiiafes wm used because ix>duectkmal.tteMa fa
kytfemEe trwrnieMlf could be measured. Several wells had iuttsecting an*, and''
fcse.weie combined to form well clusters. Scmllopei are® between 'intersecting''
protectloa mm warn elijainalel, by. «mstructing:a lime segment tangent to As outer ..
cinaifflfeeiiee «£:&& wdlhead areas. The size of the ana'to be prolpclei^as do«¥le|»:
wMck resulted in slightly longer vw&head protection tadii.. IMtiliBg tit? me of fts area
compensates for the MgliJj poroiis and permeable nMmie of the aquifer material.' He
deinesilom resulted ut three wells wi* sepawrte,. simitar weOhead protection. «w and
'two &9&ihtty
-------
Imm of Aberdeen Decaalw 4,2012, Rev, 3 Page 5
Whew; ¦ : : ••
j r^jtadfes of fhe wellhead protection area (iniles) • • '•
- '*=3.1416,.. .
: No treads in directional tamsnussnity eriydfaalic.lJoniKfaries were evident from
a study -of the topographic map, and the saatls of the aquifer should provide aa isotropic
medium for grouutwater flow. Table 2 lists lie weflhead protection taJIf for the.;
mtfcidnaJ welts, and= the wells in tiwUtad protection area clusters. He inafe stow Hie
wells, tfc five distinct wellhead protection areas, 'and potential sources of con&amiiiatiaa.
SOL • INVENTORY OF POTENTIAL CONTAMINANT SOURCES
BoteofM sources in. tfie wellhead pete-etios area were researched
as listed below; ; :
• A database, file,:attd lltmtate search of ill a^rfprlBte'FedeslfStgle, and'local . -
¦ databases cwadttctedL ¦ - ¦
• ¦' Local records on file'it tibe'Moore County Cour&ouBe.were nsseiiidkMi, and'fe fire/ '
•, department and county emergency services mm contacted to identify past spill s, : •
..leaks,«ottos polestik sources. • / ; . : . .
• ¦ Records on file st fie Payettowlle Regional Offfefe of MCDENE wens' iwiewei
• Topographic and gesrfogl&jnap and aeriid'photos ww studied to identify tamtqae •
activities, drainage patterns, surface water bodies, aad potential oontsnajiiUDit sources
. uftfcngeriau«,. ..
• Windshield and. walkH&roqgh surveys were conducted to obtain or verify rantaminant
aai owner infeanatiott, . " ¦
The' Pabic Water Supply Section's Sou®# Water Protection interactive map
viewer-revealed maay potential source# of cootammatioii "WtWoi the WUPAs,:. The EPA's
map viewer,- Bnwojnapjws, added additional mm. iiifiaiaatioo. Maps- of tfuse databases
are wchtded in the appetidlx. A iMUdd survey, consisting of driving through all thts-
roads la Ac are®, was also conducted fa identify any potential sources of etidaonikQ
and to venfylhe location of sites fciiBd 4uriai Menwt researfL \
-A large nombw of sftes "were ideBtifirfBsiitg:ii5'Ba¥raiftaHjef and SWAP - .*
wetetes. • Several of fiie sites, totkiiside and ontiMe tie' wellhead piotecBoii was, lad
maltlple sanies.' To assist in organizing the large awnber of potential' eontaminant
iowces, Table 3 presents nearby sites .located outside the wellhead ptbtectipa areas.
,' Ifiootds of the local fire -department and csonply emergency management division -
were searched for any past ii»cldai!sf spills,. or potential contomirant.sowces within the
walfeal putection-aieas. Records on Me it lit# Moore Go-imsly'Coiirllioiisepro'tided^
infcnnatioa on land ownership, - •'
. Files at the Fayettevilto Regional Office of NCDENR woe xeseaiched'fbr leaking
Unieipoani! Storage Tank. (DST) ii»adeBt8,--gro«ndwBter poUatioti incidents;, well.
D-33
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Townof Atadeea
December^2ft 12, ley, 3
PagcS
abaudoummt tmais, Injection well penalty and ftrfetaly registered: UST's. Waste
.iarfiiigS«UM«r.Iaii.dfills> aadbfizaidous •was® site on ale with the Solid and
Hazardous Waste Section were reviewed, The DIvjihoii of Water (joaUty lecorfs we® ^
also researcbed for NPDES Psmiifs and Animal Waste Operations on file,
A map reconnaissance Identified land use activities and otter terrain features " .... .
Tie Public Witter Supply Section's Source Water A&sesgaieat ftogrwt (SWAP) '
-REfKHt for Aberdeen found Wefl 12. to be most at risk. The SWA? Report lists the"
Inherent ratings as "Tilgher*, the motenioatit raing as Tower1*, and the
wsceptiblily ttliip as "randan*#* far all fiietwlls, nagiWdl 12. W12 had a .
Irighe!* Mtasot vuktesahilily rating, t ^ed'asfa** cootmiwnt rating, and a 'lagta*
susceptibility tafitg, The inherent wufaefaMJity rating eiamiaes and rates aquifer or wcl
chaiaoteriatics-or eoadiioas. The^ontamiqaat ratbg is feaieJ on the panfcr sail location
of.potential contaminant sources within a wellletl protection area. He susceptibility
'.rating indicates the potential to be contaminated by the ideatiied pcrtentlal contamiitant
D-34
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Tow.rfAh«d« • !W»r4.Ml2.*r.3
asrf to fa* each p>teitW sowe i» crfiAWA,
^S^SSSScaamdinww^^ncd.^ W
i!„^„;t,.,,t™v,..1LLdcrtrJtmimtioa«llKn«siiiitd^ ^'sidibj w* ^ ..
tttmspond with the i
Hftch site oi pDitaiiUttl coutuD-
\mili the tbllowrig equation; . .
jww «»•« -1 -
l-wmm 0»CS} ianB«g *w
Hiayefclwei . _
water supply wdl or wells.
s^sissssssxs^f^^SS
w, ': manakcw ttoWLUiK^wao-racnwiam*? ¦ .• • '
The Town of Aberdeen, eliese a Tfp^few h« p-Imaty .
—
sslss s«s c»- ^* «"*"
as inquired. . :
"A Wellhead Protecfioa Bfoctafi (5£?l2f a^ST* rratet^^Mnn
to citizen business lb* Molting ^fennrtwn.
. ¦ Aa®piwilimtfwfc^
• ftfw3u,t » Wellbeatd Protection Pwgr«»i 's-
D-35
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Town of Afeepfaa
December 4,2012, Rev. 3
Page I
• Soan^'ofgrmnidvvaterpoIIatiaD, . . :
• Tips oil protecting the water supply, • ¦
• ftopr ilspsal of household liazsrdous waste,
• Infotmatioii on proper disposal of honsehoM.liazaidoiBWMte-and oils,
• Ifflfoimatloii cm the proper 'use of fatilizas, herbicides, aadpeslicidei,
• Meooaatioii on household -waste collection appcntunitHSj aad
• Moonsfioa oo prefer maintenance of heating oil talks and septic systems.
Aiwdem will provide Monoafioii to each business, industry, and faun located
within tie WHPAs on waste handling practices, beetnunagemeat practices, standard
¦ -ojeiatlBg piocgiloiei, and waste oil disposal methods which could be employed to reduce
¦the potential for jpmundwater contamination^ The Town wilt also provide MbmiBtioii
fegaritflg the North Carolina Dwisiom of Sbvimnmentcd Assistance and Outreach '
(DEAO) to' each business, industry, and; fium located witfaia the WHPAs».
Ownas/opeiatctts of potential contamination sources will be encbunged to contact
DEAO. . . • • . ' ' '
• Personnel si Town owned and/or ©p etatefl facilities. will be educated on Wellhead
Rrotection ad steps'fey cantata; to' reduce, the potential for contaadnatksi '{e.g., ••'
infijna«fi«i abwi belt maaagmeat practices* standard operafiag procedures, waste
handing pnctice$, etc.). Afarieen. will also contact DEAO to investigate steps fiat the
'town can. fate t® reduce fie aisotont of waste released Into the air and water and on the
land at To* owned and/or manage! facilities. ' '¦ 1 •
DEA.0 provides free technical and other soa-iftgalAtory assistaBerto ieduce tho
amount of waste released into the air and water and on the larf, DEAO scarves as a
central' repository for *sste reAietian and pollution D1AO
einptasfees waste reduction through poHutwaprovaiticin,. «oui»fes comjwiifef and-
ge?etniaeat agencies to go beyond;compliant, tad provides inftnnatfoa afoot the
awfenmsiital, pennM®® process. This iafcttnttion is provided at no charge to North
Carolina businesses, industries, government agencies, and As grand public upon
request, for additional infbcmatioii, DEAO may be ooiilnctei at (919) 70-7-8100 or (877)
623-6741. For environmental emergencies, the agency can be »»teefal at (800) 851-
0361. . ,
• • The Town of Ateieai will contact all facilities or agricultural qperattqos within
the WHPAs that store f«ficldes, or that are otherwl.se involved wltlAe applicafitsa, of .
pesticides, to ens ure that flisj licensed by He Slate of North Caralioa and that proper .."
records art autiotained tp-'easwe observance of NC Pesticide Lam Aberdeen will -
provide Safeitnaioii to these facilities or'agricultural operations regarding waste handling
pacices, best management practices, slanltnl operating procedures', and pwpet wnste
-disposal methods which could be employed to reduce the potential for groundwater
contamination.' These feeiitiw'wiil also be provided with information residing the
North Carolina Division of Environmental Assistance and Outreach. :
D-36
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Townof Abenfoea ¦ : Decautw^lOlljfcv, 3 . PigeS
All lams, residents, businesses, and industries in the WHRAs with septic tanks • :
dtsbftotcd a copy of the Wellhead Pfotection Brochure W-Mi wA mj ofiier _
fafonaafioji the* town can obtain from federal, county and/or state if eucies on proper
ssptio tank maintenance. .. ¦ •
la the event of a spflJ along-roads or nibotuis entering the wellfcead jwotectjon
area, Mmtt County finfirgency Management will be contacted at fie following number; ¦ . •
M#«reCottm^'Emergency M»B8ge*»eiit.lll*M«m; . {fit) §47-131?
' Owners of improperly constrocted or abandoned wcUs Identified' wfthin Hie
, WHPAs will be pepvided infiMjnation reganiiig the threat posed to the water supply by
fliese wells. Owners of iaipogcrly co&Mructed 01 abandoned weBs will be enceuaged. to
have these wells properly abandoned in accordance with state well c«s'tpclioa stendanis
found in ISA NfiAC 2C, "Catena and Standards Applicable to Wafer Supply mi Certain
Other WBUa!lSf infotntafion exists that a well is improperly constructed or is
to: the eoalaiBliatiOE of groundwater; the Town of Aberdeen will aatify tie .:
C Aquifer Protection Section of:tile Division of'Water Qualify,
•/. All ©wiwas/ojperRtois of regulated OSTs and otter facilities subject to federal
and/or afate regulations located within the 'WHPAs will be .requested to supply
documeofstloa t*t iusfe itoiify is fa compliance wiA rejpdafjom Operators of"USTs
wiObfeastod to supply t&eTovrawithajcopy of their UST peitnit.' If any USX sites aw
found to be non-«ampiant the Underground Storage Tank Section ©fine State Division;
If an abandoned TOT site is found, Aimieen w31 cootafct Urn North Carolina
Division ofWaste ManagMosl, U'ST Secfiea, to'detentine if a dnpm report was • "•
iMtid flanwostrafing fiat no soil at groundwater cfintaminslioa was. identified iuaag
closure. If a closure feptjrt was not submitted, the Town of Aberdeen will notify He UST :
Section of the location of flic .fadfity within ihe WHPAs and fesj»SBtiiy to n pottle .
water.sHfpljwefi, : ' .' • '
For mil or groundwater contamination incidents wi'flaa ;tbe WHPAs, ftte Tom of „«
Aberdeen will contact 'tie 'State agencies with oversight lesponsiMiities fix lanofiatioii
to detamiae if raflediaion efforts aw fwceediiig in • tbijr feslioo and in ftowriance
wifit any setadaies established by fliese agencies. Through* fiiipraiw, file Town will
Wag to ttieattention of the State agencies villi oversight responsibilities for remediation
«ny failures by the-responsible parties to comply wiA. required iranitoring and corrective
action. IfcsT®ws^itoiic^.^Sl«ie^aiiai-'^iww«i^iB^wirfHBtlB«ftf .
reoiediatisja, of the location of fte facility within Ae WHPAs aai its ptoxiaMlf to %
'public water supply .well The Town of Aberdeen witlalw contact the State agendas with
oversight 'tesponsiMIMes for 'the ceataaijaallcai incidents aai uglify ftaa of tie loeafiona
of any sites issued notices of1"Nb.Furiter Action" .ocenmsig within the WHPAs ami will ..
i^uest a review, of tins assessment . ' . •
D-37
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Tom of Aberdeen ' December 4 2012, Re*. 3 ¦ • Page 10
Hie Town of Aberdeen wit! notify any individual, mfastej, business, or
government agency installing or planning 10 iastetl 1 a regulate! IIST wM»lo lie Town's
wellhead protection areas' of tie following Kgwlitioa: ¦ North Capitis, Uikfotgrouitif
StoMgeTankEegiiatlon 15ANCAC2N .0301 stipulates specific siting and Monday .
. cenfainmral requirements for UST systems ii«alled after JmuKy-Ii I»l» -lie rale is
summaiizei as follows: " '
No. UST system awy h imstslletl within 10# feel of a j»iMic water supply well or
• within Si feet of any ©tier well, used for human consumption.
• SetamifBf containment is required for UST systems within 'SOU feet of a well serving- ¦
- a publicwater supply or within 100 feet of my ottier well used few human
consiimptiiMi..
Violations of this .repiMon vffl be repotted to the Division of Waste -Management,
IJndergrowMl Storage: Tank Section. The UST Section wiO also be notified of the ¦ .
location rfthe facility wifan tie WHPAs and its proximity to a'poUio water supply well
©t any other well used for human ooosmiipioii.
A regulated UST system is my mde^pouBd storage tank aid associated piping
that contains" petiol&BS (inclnding gasoline, ties©! tad used. oil) or a hazardous -substance
as defined by the Stale niles (15AMCAC 2N). Tfcks c«lpiiiiJg fc,«l3i^'oil for use 00
flieprtOttWswheresttJiHiwaotfspilalBi. ,
" Owners of petrolettm abovegitnind storage tanks (AST's) with a wtanae greater -
than 660-gaHooyor * eombiwtioii of AST's with a aggregate vofcane greater than 1,320-
pllmw subject to the Oil Pollution Pteveftioo nsgtiaiens contained to Federal
Regulafion&ftnind in 40 pFK 112.' la most cases, these facilities mwffrefw uai
iaipfamciit a Spill Prarcation Coateel and. Ctwufenaeasnres (SPCC) Plan.. The Town of
Afasfces. mil request s -copy of the spill plan for each AST located Within..i»e WWAi,
Facilities with subject AST* f&mi mot to be ia complisaiee 'with, this regulation will be
notified of fceir regulatory responsibility 'under tMs regulation.
The Town of Aberdeen-will contact the Division of Water Quality regarding
facilities jpemjlftecl to discharge wastewater to the land airfaoc .{Noa^MPDlS Pennftted.'
Facilities) to ensure tint any such oiperatkms located within the WHPAs ace in
wmpistwe with applibable regulatory 'tod pewit reqwrenwiils pertaining to -
awifoinaeii'ta! protection, such as tontine moniloring and reporting refoiieiaotts,
I;, -; .
¦. The Wfooie'Gowilf-SoliiJ Waste Department operates a landfill amiseven steffed
ccmtaiaers sites ftaongtailitte Comity, which. haw recycling-€«MskiaT5 for dvminum,
¦eariicfflri,;pl»ie,. gjass and u»cd appliances. I.'sad MI, lead. acid batteries;, and Urns are
collected at flic Carthage site.' '. •'
- ' lie NCCoof«cati.¥e.E3cte.o.s!Qii Service works with the Moom County Soli
Waste Department to jwovidc.pesticide feeycllng for local faunas. The Pesticide
Pispostl Assistance Program takes in unused pesticides and pesticide containers for
D-38
-------
Town, of Aberdeen December 4,.2012, Rev. I Patg» 11
disposal. The program has funds to operate the program at least once in each county of '
(fw slate every other year. • "lie; Ixfcasioa Service pKJvid.es notice of fee service in lie
local paper, a«J. residents are irattocted where to 'drop off their waste and low it should ^
be'labeled and stored.
V. : EMERGENCY CONTINGENCY FLAN ¦
. The Public Works Director is flue primary indivMusi responsible far iffipiefnentttig
tic contingency plan," Tie WPG pay le involved In, deci wn-makiag in the event that
nsporae actions aieiequind - -
SiipiitTeriB(]rsstban 48 io-urs) Contingency .
For major oil or etmakd spills within the Wellhead Protection Am, -notify the
1-911 Conmmcatioos .and Mom Coonty Emergency Management Agency first:
911 ' , '
. ; Moore Cranty Euergtmcy MiMgenitiit DiVfaioa: , <910)947-6317
¦•If evidence exists that a well is scatarauiafed> it mil ianwdiatdy be taken off-line
and mi returned to service until it is- detersvned fat wate' qualify from fife iftpieted
welt is in compliance wtfh standards governing public water supplies.. If ofie of the wells •
becomes eontaiainated. It. will be isolated from tte rest of the syitaa by the Pablic Woiks
Dfeetor or his representative, by closing the -valve at lie wellhead. A water spteni •
schematic is kept on file at Pubic Works, ' ¦ . - .
Additional phone fiyjjahets for logistical, financial, media contacts, aad tectaieal
resowtees»liacd in Table 6. • -
Ln^-Tenn (greater Am 41 l®BfS)C(HttIiif««y '- '
. fa. addition to coilliiiiiiiatbn, loag-tetti disruptions (greater than .48 hows) in.
sovice could result fiotn: •; ; • • :
e Long-tens power outages, -
» Riaip JMhae, •
a Decreased;weMj-idd,or : ..
• Other system failures. . ^ ::
: |fifJsdet«mi.IiirfttMco«teBiUBajitseiileredfiscisliil)'iitI
-------
Town of Abarcteen
December 4.2# 12, Rev. 3
PaaeU
"Special Notice Abottt ¥«jit Witer
Due to mw slate reflations: If you fesc water pressure due to a malfunction. la
flie Temi's water system-3* to a water leak or a failure of our telemetry system, you will
be abutted to start, iminediatsif toiling your water natil we receive'a water sample back
yrffij accepftabte results. ' '
The number of customers wifltoiit water may be too high for eadi individual to be
notified, However, the advisory will be posted on the Town websites and Channel 99
when in effect. Depending on the lime and day of wok the advisory lakes place, it may •
take 24 to 41 tans for test results. If fine test results come tact not acceptable, it may . •
; take aa sMificmi! 24 hours &i results- After itf s^ttitie frame yon may cfendr flie Town
website, Channel 99, or call 910-W4-7799 or 9111-944-7012 to-see if flje Boil Your Water
AiMsoty has been lifted." • • - ¦¦¦
, High-ask wafer users, such as dialysis patients, schooJ.®, .hospitals, day care
coatee, ami Jest homes will be'notified If telepJioafc If required, a notice will bp placed
in the focal papas. • . ; !
; ¦ • ¦: If conimiasioii occurs, fl* wgwaj office of tie Public Water Supply Section
slal be notified tmnediateiy of lie station. aid asked fa assistance:. Sampling (I.e. ,
bacteriological., VO&, SOCb, etc.) will begin to detennine lis aataialaant involved anil
tie extent of cratammatidii. A systematic flushlag of tie di$tribtitian system will begin,
with folow-np:iapi|>lii|g^cg|itffited as needed until the system la ietamiaed to be fee of
contamination and in compliance with slandanfe gOTemkig public water supplies. After
considfaficKi with, the Pubic Water Supply Section, nskteafg mil be notified that the
Town- of Aberdeen water is once again safe for coiitsaptian, -
Ice stoms, tome®»s» and floods cam .poteatiaily -disrupt water service. He
elevated storage teaks will be Sled before any msjtif "wafher events that could disrupt
service. Town personnel will place a priority on restoring well operation once an Outage
is identified. : • '
Table fridentifins available logistical, technical, and financial resources. Pump
failure or faawsal yield in «ne well tan be resolved nail it is repaired ondisbifitated,
'by pumping from flie unaffected well.
PmWPDBHCWATlKSBfFLYWEUS V . -•
The Town of Aberdeen will amend its Wellhead Protection Flan. to include say
new wells added to its water sy stem, lie following steps wfll be token to address any
new welts adEded to tie water system; ' .
I. Develop a peltainary VHPA for the proposed wcl 11» determine die mat of
vuEnerabQity; ¦ ' •
D-40
-------
fftKttofAltrfieo. ¦' . . Dec«al)a:4,2'ii2, Rev.3 ' . ' Page II
2, De¥dopamMaiiililm{m!rceiiweiifofy^&ifcp^iiiJiina«y"WllPA,
3, lafefmalioii o6taia©d ia iloiis laud 2 alrovewfllte submitted to the Wellhead.
Protection Comtmttee (WPC). Any infbixnation required by file Public Water Supfly
Secfiea (PWSS) Bslsting to the development and comtoictloa of new pofalfe water ¦
•' supply ifFWS) welts toast also be suboutted.. ; ;
4, If the WPC grants provisional approval of the proposed Wellhead Protection Plan,?
• and the PWSS goats approval to constriict or expfini the PWS wei or well system,.
then wnk may proceed wiii well construction. ,
5, Finalize fiwVHPA delineation fertile new well.
6., Hnalizeihe eoatemlaant wince inventory for the WHFA. .
7. SUhnit fiiiaiizei WHPA ani conlaminant source ill?enteiy to the WPC.
I. Once afp-wat is received, implement any necessary tejpJjittty aid or moii-«gijlatory
potential source' irjaigenieiit practices, : " ¦ :
9. Submit 8k .amended WHP Plaii and all aecess&iy rappcring infomiattou to the
Public Water Supply Section for review «fid approval.'
PUBLIC PARTICIPATION
After the plan is approval a (ri-fold brochure showing the Wellhead Protection .
Area, including lie information listed iu Section ill, will be mailed to all residents Irving
ia the WHPAS. ;
' '; The Draft Wellhead Protection Man was male available for a'1hiirty*day period for ¦'
revlBW;amdi oojniomt after pibllsMng a.-notice in -file local, papa,.. No coomwai* wa .
Deceived. • However,: tie plan will be fcqpt syllable for public review at Ae Town. Hati,'
Any substantive eosinwnte received fans tie public *wil be iot®itj»fJrt«i into fie plan,
afierreviewby the WPC. - \
•' lie-Town of Aberdeen will incorporate public participation into the Wellhead'
Protection Plan'by: '¦ • ' '
• UsingpubicedBcatioiiasaiBeihcxIofiiiaii^iag'tle WHPAs.
• Informing focal business owners and industry gtf best. management pracliees and
pwidiniinfO'niistiiJxioiigKJBniwalerpO'twtion, . •
• Keeping finis plan. at the Town Halt for public review at any time.
WHUIIAD PROTECTION PROGRAM REVIEW- :
. ' The Town of Aberdeen is awace that an effective local Wellhead Protection ¦ ;
(WHP) Prbgrarrt is an ongoing process requiting aionitoring of the Wellhead Protection
Ana, .Sad perfodic review and updating of an approved! WHP Plan, Thetvibre, the
Town's WHP -Comiiuaee will wonitor the WHPAs far any new or fxrwtouslj' '
linideatified potaitii contaminant sources (PCSs) and activities occurring vrifhin the
approved WHPAs. 'The Town will amend the PCS m»eof«f and other Plan, components ;
D-41
-------
D-42
-------
D-43
-------
rtueiyee.il wetineao protection areas
D-44
-------
i
„ .
Js!L—-
2
3
5
6
7
8 • ¦
9
10
11
.12
13
»
15
16
P
m
19
m-
m
2,22
162
200
250
100
122
.151
2S0:
210
104
18
175
250
: 225
90
——
fW,
_ D6B
192':
147'
200*
200*
230'
'200'
lOff
200"
200'
Iff
IBS*
Iff
2«r
270'
260'
216'
W
94*
fi1
70"
96'
80"
1001
lOff
Ma-
ize'
129'
12§"
liff
100'
210'
195'
160'
11"
143"
143*
159'
188'
120*
MS"
179
US'
110*
179*
ITS'
180'
145'
2S01
250"
205'
82*
8"
8"
Ifl"
'Iff*
»¦
io-
»•
10"
10*
10"
10"
10"
10"
10"
r
• s-
10-
TaMel,
:.2 •
.130
3
27S ¦
5
222
6 '
: j.62
7
200
8
2S§
9
100
10
• 1.12.
11
' 151
11
260
15
. , 230
14
104
IS
108
¦16
175
17
250
IS
228
19
m
§00,OOP
600,000
soaooo
mooo
KftQW
6o%obo
wojooq
mom
600,0®
600,000
600,000
600,000
600000
600,000
600,000
600,000
33,600
• 198,000
159,840
116,640
144,000
180,000
72,000
87,840
108*720
187,200
151,200
74,880
77,760
126,000
'180,000
mow
600,000 64fBQ0_
IMII * ri1" 7~m"
0,112
0J6O ¦
0.533
0,389
0.4S0 '
OjGOD
'0,1«
' 0l293 •
0.362
0,624
0.504
0,250
' 0,259
0,420
0.600
1 0.54O
0.216
tjrt
2,420
. 2,174
1,857
2,064
2,307
1,459
1,612
1,193
2,353
2,1.15
• 1,488
1,517
.1,931
2,307
¦ 2,189'
W84
Trtle 2 Aberdeen wellhead protection radii
D-45
-------
*- - ";™r vpes ""
SWAP
• lee Pavfng Company (NCDOT Site 21}
SWAP
Crown Castle :
SWAP
. Moore County Solid Waste Fadtlty
SWAP
Moore'County Landfill 11
5WAf»
KMC Wtld-Albntlc Aberdeen
SWAP '
Pinnacle Furnishings
SWAP
Aberdeen Municipal Supply (Umtene).
Enviromapper
Gulfetan Carpet Inc.
Enviromapper
• St Woolen Corp. • • .
Enviromapper
WCRkhanhCOr'
EfWlfomapper
Thermal Metal Treating
Enviromapper,,
Sfngenta Crop Protection (Rt 211 Aberdeen Pesticides)
SWAP, Enviromapper
ST Woolen (Aberdeen Asphalt Plant} : :
SWAP, Ermifcmapper
MiBHtewi.fi Poweffooss Incorpwitrf
SWAP, Etwlrarnapper
Former Piwwfer Metals Prod (Aberdeen contam. GW)
Table 1, Potential Sources Mitsfefe the wellhead protection areas
Map Symh
A-l
Gas Station
AJco#27 . • ¦
; A-2
Gas Station
Pare 211 fast Mart .
: B-l
Mini-Storage
Dana-Properties Mlnl-Stor
' 8-2
Mini Storage
American Mini Storage
B 3
Mini Storage
My Storage Space
B-4 ,
. MM Storage
tMtor-lf
1-5
Mini Storage
Sandy Mine Self Storage.
C-l
Cemetery
Faith Cemetery
C-2 ,
.'Cemetery'
iethesda'Csmetery Association, Inc
^ C-3
• Cemetery
St. Joseph AME Cemetery
,«
Cemetery'
Jackson Hamlet Cemetery •' :
£W;
Auto Repair
Ron's Antes Beefy
¦ 0-2 '
: Auto Repair
Johnson's Radldtof Repair
m
Auto Repair
Crestline Fire Pepsrttment
E*i
AST'
American Tower cell - ¦
F-l
Lift Station
Lfft Station 8
F-2
lift Station '
Lift Station
G-l
6otf Course
Legacy Lakes Golf Course ' ' ,
' H-l
cthemteai Storage
Barney True Value Hardware'
H
UST
Aberdeen Primary School
J-l
Industry
Glegy tiemctal Corp : ' i
J-2
Industry
Southern States Galvanizing |NC Landscapfne)
i-i
Industry
KOterafi (Aberdeen Bins)
14
Industry
Mm (CGC Investments,: Carolina Galvanbing Corp} ''
K-l
MHP .
Ample Pines'llHP
Table ~, Aberdeen potential souvtes of contamination
D-46
-------
Aberdeen Municipal BuMding .
|310) 944-1115
After-hptir*. weekends. emergencies:'
{920)944-7799
Aiertten Public Works ©upt
(910)944-7012
Aberdeen Winning & Inspection Dept
'(910)944-7024
Southern Pines water system Emergency Connection -
f«0| €12-2463
Moore County Public lltil'ltfes emergency Connection
' (910)947-4313
Moore Cowity Administrative Office
(910)947-6363
Moore County Chamber of Commerce
(910} 692-3926.
Afeersta«m Water Department
{910) 944-7799
.Progress Energy
ISJCf 944-5322
to Report Power Outage
.(800)419-6356
North Carolina Natural 6® Company pCMS}
pfl®} 2?5-iai4
Wlndstream Telephone Company
{iOOl 347-1991
Time Warner Cable
(910) 692-6648
The Pilot http;//wwwi.tti«pilBtcof»;
(fio|»a-tsii
The Fayettevilk Observer http^/fajwbserver.oom
(800) 682-3478
WCPEAb«rtf«TiSa.3fM
|910J 586-5178
Star 102.5 FM
{910) Sfe-2969
¦ WRAL Channel 5 '
(919) 811-8600 i
Table 6, Ipi'erpncf CwtaethfomwllOB
D-47
-------
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14
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WW
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woa
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WB
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t~t
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woe
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tefcwi» CiSBStii? fcspanttoB, II*
eil«CliiincWOfp
filth CmrwttXY .
D*a Kepetta MlnMtor
HiaJ
PHrtMifMlMwt
Mats
•rim, lis fCSC IroMtBMWttfc Cprafc* Corn's
Ron* Autft Body
wanking (wc LandsBfl»i!
jiasai.
U US!
c-i ctmetoy
H-l t
»4 mm straws
Buitwtw* ¥Aii> M»rt<#w
.. Ai-F
If.',, " **
5.100 2,114 MB 3
USO W7« MZ 1
2,250 230? 0." S
w aaw mb i
TV)
WL0
K
lift Station
win
M
CWB!t«a__
*'»
C-4
Ctmetny
1 wis
Mi
i •-•Ut'_ %
v I i'l'f V nr -»rai
U.-L r l -«rsM It'iT.Mriy
Mrc«¦" t- MMP
BEO
1,1512
_iiy_
a»
WHP>ft5
UB8
w»
l»$»
0,1,4
0.77
B *,15 ? .inc") I ,wr>rlawr K- WW if = t
0- , t1 ^ 0.1 >'< I ii'.rr' \,MB |* -" J
i.<, .-..rnd : 4 i-luwlP WL" (r - ^55')
Wl
1,S#|».
0/0
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WIS
UOJ
.!,«*
0,(4
a
0.12
WW
$04
t
M*
i,soo
tjm
0.0*
.1
0.0*
77S
t, sss
0,«
i
3.«
ma
S.3SJ
OM>
3
til
htm
1453
033
3
l.»
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t»af»
23S3
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1
1.5?
ess
IMS
3
t,«
«B0
Mss
MS
3
1.34.
im
U1S
B,i»
S
0.73
i,m
1,331
0,H
1
0.22
uss
SUS1
m6
1
0 M
mo
J.3C7
aM
a
1,61
t,m»
i-1®
o,»
i
1.0D
1 300
ua*
t.iii
i
0,12
e»
0,03
i.ii
lm
AM
0.77
T.I--1 B I *iwl¥5l»i» Altai*'"" '«'• is*.
D-48
-------
' ' WEBSITE AW DATABASE SEARCH:
1. ; 20112 Water Sn»plf System Eepjit:, . : .
h.^;/A^yjjc»»gt-oig/WaiCT:,Stipf>lv Plaanifla/Local_ Wain Su^pJv PiWscar
2. Et*A Vl&vvaftcte data, wrAoise fiwlwltag ftavJnmBpper) '6* Mwration ao
air, ajmmiiotty wstw sources, water disefcargsis, t«fcMs««» lasifittas wssfc «ed
:' tflpOEfaid rites? tMarfhmw. cm, goi-/«imreAidei:,tegi.l ' : *
3. • ' Seorewaler ftotectioa «nd Assessment to KC for fnforraatitsa oo Aaiaat
•: Opa»tiaii% CBftCpS, MP-L, MPD.ES, PCS, EOtA, *pt«ge disposed, soil xanedbtna;.
" and Herft sites, wrnJMmgt peanits, liwffills, jwlMioa iaeiieat}, rat WC and I®T
pennhs; http://204.21
D-49
-------
AjjMSiix to 'Aberdeen Wellhead Protection Plan-
Website ani.datahase searches conducted • ; :
SWAP and Eawatnappw intefastrve mapping datatee results '
fereotoiy oif Potential Contaminant Sources
Ctegcp Welihsatl Protection ftggpm and EPA(I993) iHc categories
Well MBtrwcioii feconfc
D-50
-------
, KWHl(im¥OfJOTOTMLCO»TAIfIffAIIO^ SOURCES
, ' ' Map Symbol .f - / •
•Facility Namk ...diffdrV CHc ,-ti/A-t s'Q.fi.P
ADMWt ' ' .
ROiJTE. Zfl H Wt<,T ntr ..sfc. 2.0 6 31
HiJu: )m ¦ Ai -j-Jf.
rlH'CWE#:
OWM/lf:
'....' ' JTM R 0,vM HCc-M ( H bam Hul, r-->M ^ L-PA>&mA
MuMCEAury; ':A6mjot*tM WHPA; "
, fomrim Ccwtamiratkw' Sources; ' : Quantity;-
ADWnWALlNFtSMATiaJ:
__££L5Tftja5r. ^ u yV.. .£ '-Mmlmml
. Af'K- 1-
- Dm. i-:.. _i/ C4 fr- _ XL.. ir»a£_
D-51
-------
Ci'f) i>uiviK> iuiw- | 11
Facrlity Registry System (FRS)
V;u j« g&j)ma> jgl5 Pi^tW?
••sSir: ffia i pub. ea* y_dW >rf?sp_irocTrp_ feoHfr
Last ubtitiaC or Mjndfty, Septets Qsr if, J-JQI
^ FgcmteDstalLRefigjl
«S
GETQY CHEMICAL COftP. (ABERDEEN PlAHT)
M3UTE 21L4 HtflE WEST OFSR.5M3
iflSJDfia#, r£ ZB3L5
cpa s*ifcovi.crtnwirtt I
<.fcrTP«mfttn*»Mfc» Vr«ttnW.Htifrrt
ahkriiirff I^duttjriu: dtolift&rtfon CwSt» fSIC)
Hn SIC Cwlra
rirtJDnsl iBduritry CtKHloWn ZyfSxm c&#efl [NAJCS1
TM» WOCS CotJ« niuKCL
FsGCtf C<'dej *rrf fOno«
AJit/ejrtfvt names
rt zii ABS.M3I psncnes
—Y
»
iwrtiwraS ll
ICS I
51 CWra^WCDWTAHlHtTE&yvai ¦
1
«£KI—-Jl
fla av**J*tU>nj rtroi»r4t
FdiTIlLy Meiilng
fta facilrfy H*'LrvJ AdzntSyr* r»THnuat
Contact*
Ka Cirtt&H WStfQii.
Qwery es£cutfid w>: 5hEP*l9-20l2
http:Wfl3pub.epa.gov/enviio/fH_query_dtl .dispj^rogramjacility
9/19/2Q11
D-52
-------
APPENDIX E
COMMUNITY RELATIONS
U.S. ENVIRONMENTAL PROTECTION AGENCY
NEWS RELEASE
EPA.GOV/NEWSROOM
EPA to Review Cleanups at 45 Southeast Superfund Sites
Contact Information: reQion4press@epa.gov, 404-562-8400
ATLANTA (Oct. 19, 2022) - Today, the U.S. Environmental Protection Agency (EPA) announced that
comprehensive reviews will be conducted of completed cleanup work at 45 National Priority List (NPL)
Superfund sites in the Southeast.
The sites, located in Alabama, Florida, Georgia, Kentucky, Mississippi, North Carolina, South Carolina,
and Tennessee, will undergo a legally required Five-Year Review to ensure that previous remediation
efforts at the sites continue to protect public health and the environment.
"The Southeast Region wili benefit tremendously from the full restoration of Superfund sites, which can
become valuable parts of the community landscape," said EPA Region 4 Administrator Daniel
Blackmon. "The Five-Year Review evaluations ensure that remedies put in place to protect public health
remain effective overtime."
The Superfund Sites where EPA will conduct Five-Year Reviews in 2022 are listed below. The web links
provide detailed information on site status as well as past assessment and cleanup activity. Once the
Five-Year Review is complete, its findings will be posted in a final report at
https://www.epa.gov/superfund/search-superfund-five-year-reviews.
Alabama
Alabama Army Ammunition Plant https://www.epa.gov/superfund/alabama-armv-ammunition-plant
Alabama Plating Company, Inc. https://www.epa.gov/superfund/alabama-plating-co
Mowbray Engineering Co. https://www.epa.gov/superfund/mowbrav-engineering
US NASA Marshall Space Flight Center
US Army/NASA Redstone Arsenal https://www.epa.gov/superfund/redstone-aresenal
Florida
ALARIC Area GW Plume https://www.epa.gov/superfund/alaric-area-groundwater-plume
Beulah Landfill https://www.epa.gov/superfund/beulah-landfill
Chevron Chemical Co. (Ortho Division) https://www.epa.gov/superfund/chevron-chemical-companv
Florida Petroleum Reprocessors https://www.epa.gov/superfund/florida-petroleum-reprocessors
Q
E-l
-------
Miami Drum Services httpsi//www.epa.aov/superfund/miami-drum-services
Pensacola Naval Air Station https://www.epa.gov/sup8ffund/naval~aif~station~peosacola
Raleigh Street Dump https://www.epa.gov/superfund/raleigh-street-dump
Taylor Road Landfill https://www.epa.aov/superfund/tavlor-road-landfill
Tower Chemical Co. https://www.epa.aov/superfund/tower-chemical-companv
Georgia
Alternate Energy Resources Inc. https://www.epa.aov/superfund/alternate-enerav-resources
Peach Orchard & Nutrition Co. Rd PCE Groundwater Plume Site https://www.epa,gov/superfund/peach-
orchard-road-pce-plume
Powersville Site https://www.epa.aov/superfund/powersville-site
T.H. Agriculture & Nutrition Co (Albany Plant) https://www.epa.gov/superfund/t-h-aariculture
Kentucky
A.L. Taylor (Valley of the Drums) https://www.epa.aov/superfund/al-tavlor-vallev-of-drums
Brantley Landfill https://www.epa.aov/superfund/brantlev-landfill
Distler Brickyard https://www.epa.aov/superfund/distler-brickvard
Distler Farm https://www.epa.qov/superfun https://www.epa.aov/superfund/lee-lane-landfilld/distler-farm
Lee's Lane Landfill https://www.epa.aov/superfund/lee-lane-landfill
National Electric Coil Co./Cooper Industries https://www.epa.gov/superfund/national-electric~coil-cooper~
industries
Tri City Disposal Co. https://www.epa.gov/superfund/tri-citv-disposal
North Carolina
ABC One Hour Cleaners https://www.epa.gov/superfund/abc-one-hour-cleaners
Aberdeen Pesticide Dumps https://www.epa.aov/superfund/aberdeen-contaminated-groundwater
Benfield Industries, Inc. https://www.epa.qov/superfund/benfield-industries
Cherry Point Marine Corps Air Station https://www.epa.gov/superfund/cherrv-point-marine-corps
CTS of Ashville, Inc. https://www.epa.gov/superfund/cts-millsaap
GEIGY Chemical Corp (Aberdeen Plant) https://www.epa.gov/superfund/ciba-aeiav-corporation
Gurley Pesticide Burial https://www.epa.gov/superfund/gurlev-pesticide-burial
North Carolina State University (Lot 86, Farm Unit #1) https://www.epa.gov/superfund/north-carolina-
state-universitv
Sigmon's Septic Tank Service https://www.epa.gov/superfund/sigmon-septic-tank
E-2
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South Carolina
Admiral Home Appliances https://www.epa.aov/superfund/admiral-home-appliances
Beaunit Corp (Circular Knit & Dyeing Plant) https://www.epa.gov/superfund/beaunit
Carolawn Inc. https://www.epa.gov/superfund/carolawn
Elmore Waste Disposal https://www.epa.aov/superfund/elniore-waste-disposal
International Minerals and Chemicals (IMC) https://www.epa.gov/superfund/irric
Kalama Specialty Chemicals https://www.epa.gov/superfund/kalama-specialtv-chemicals
Koppers Company, Inc. (Charleston Plant) https://www.epa.gov/superfund/koppers-charleston-plant
Savannah River Site (USDOE) https://www.epa.gov/superfund/savannah-river-site
SCRDI Bluff Road https://www.epa.gov/superfund/scrdi-bluff-road
Tennessee
Mallory Capacitor Co. https://www.epa.gov/superfund/mallorv-capacitor
Memphis Defense Depot (DLA) https://www.epa.gov/superfund/memphis-defense-depot
Background
Throughout the process of designing and constructing a cleanup at a hazardous waste site, EPA's
primary goal is to make sure the remedy will be protective of public health and the environment. At many
sites, where the remedy has been constructed, EPA continues to ensure it remains protective by requiring
reviews of cleanups every five years. It is important for EPA to regularly check on these sites to ensure
the remedy is working properly. These reviews identify issues (if any) that may affect the protectiveness
of the completed remedy and, if necessary, recommend action(s) necessary to address them.
There are many phases of the Superfund cleanup process including considering future use and
redevelopment at sites and conducting post cleanup monitoring of sites. EPA must ensure the remedy is
protective of public health and the environment and any redevelopment will uphold the protectiveness of
the remedy into the future.
The Superfund program, a federal program established by Congress in 1980, investigates and cleans up
the most complex, uncontrolled or abandoned hazardous waste sites in the country and endeavors to
facilitate activities to return them to productive use. In total, there are more than 280 Superfund sites
across the Southeast.
More information:
EPA's Superfund program: https://www.epa.gov/superfund
o@©o
E-3
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Sire Name: Geigy C h«nkal Corp. (Aberdeen PLiuli
Interviewer >"ame: Sreph.mie Gnibbi
Dare: 2 22 2023
Iiiteniew Fonnar: Ein.iil
Interview C ategory: Doug Rumford. State Agency (NCDEQ)
L What is your overall impression of the project, including cleanup, maintenance. and reuse activities
(as appropriate v The remedial activity to date ha; been warrantee mid appropriate: operation and
maintenance activities at the site are appropriate
2. What is your assessment of the current performance of the remedy in place at the Site'7 It: the rune
since the List Five Year Review the remedies utilized tlms. far appear to be containing rhe spread of
the contammaut plume to the poml at which it lias not extended its lateral reach to-vard Aberdeen
Creek.
i .Are you aware of any complaints or inquiries regarding site-related environmental issues or remedial
activities from residents in the past five years? No
4. Has your office conducted any site-related acidities or communications, in the past five years'1 If so.
please describe the purpose and results of these activities7 No
5. .Are you aware of any changes to state taws flat might affect the protrctiveness of the Site" s
remedy1 April 1 2022. Amendment of NC 2L GW Standards
6 Are you comfortable with the status of the institutisjiial controls at the. Site? If not what are the
associated outstanding issues? Y'es
7. Are you aware of any changes in projected land use(s) at tie Site? Continued residential
development was evident west mil south, of the site.
8. Do you have any comments, suggestions or recommendations. regarding the management or
operation of the Site's remedy"1 No Additional Continents
E-4
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APPENDIX F
GEIGY CHEMICAL CORP (ABERDEEN PLANT) ARAR REVIEW
Section 121(d)(2)(A) of CERCLA specifies that Superfund remedial actions must meet any
federal standards, requirements, criteria, or limitations that are determined to be legally Applicable or
Relevant and Appropriate Requirements (ARARs). ARARs are those standards, criteria, or limitations
promulgated under federal or state law that specifically address a hazardous substance, pollutant,
contaminant, action, location, or other circumstance at a CERCLA site. To-Be-Considered criteria
(TBCs) are non-promulgated advisories and guidance that are not legally binding but should be
considered in determining the necessary level of cleanup for protection of human health or the
environment. While TBCs do not have the status of ARARs, the EPA's approach to determining if a
remedial action is protective of human health and the environment involves consideration of TBCs along
with ARARs. Chemical-specific ARARs are specific numerical quantity restrictions on individually
listed contaminants in specific media. Examples of chemical-specific ARARs include the Maximum
Contaminant Levels (MCLs) specified under the Safe Drinking Water Act (SDW A) as well as the
ambient water quality criteria that are enumerated under the Clean Water Act. Because there are usually
numerous contaminants of potential concern for any site, various numerical quantity requirements can
be ARARs.
In performing the Five-Year Review for compliance with ARARs, only those ARARs that address the
protectiveness of the remedy are reviewed.
Current Potentially Applicable ARARS
It is the EPA's policy that ARARs are generally "frozen" at the time of the ROD signature unless a
"new or modified requirement calls into question the protectiveness of the selected remedy", 55 Fed.
Reg. 8757 (March 8, 1990).
Soil
The exposure assumptions, toxicity data, clean-up levels, and RAOs used at the time of the remedy are
still valid for the soil COCs. As indicated in the table below, none of the remediation goals resulted in a
cancer risk greater than 1 x 10"4 for carcinogens or a n on cancer HQ of greater than 1 and, therefore,
remain protective of human health.
Contaminant of Concern
1992 ROD
Remediation
Levels
(mg/kg)
Residential
RSLi! 10 6
Risk
(mg/kg)
Residential
RSL" Hazard
Quotient
(HQ) = 1.0
JmsM
Risk1'
HQ1
Aldrin
0.1 13
3.9E-02
2.3E+00
2.9E-06
4.9E-02
Alpha-BHC
0.28
8.6E-02
NA
3.3E-06
NA
Beta-BHC
1.15
3.0E-01
NA
3.8E-06
NA
Delta-BHC
NC
NA
NA
NA
NA
Gamma-BHC (Lindane)
1.5
5.7E-01
2.1E+01
2.6E-06
7.1E-02
Dieldrin
0.13
3.4E-02
3.2E+00
3.8E-06
4.1E-02
Endrin Ketone
NC
NA
NA
NA
NA
Toxaphene
2
4.9E-01
5.7E+00
4.1E-06
3.5E-01
DDD
7.6
2.3E+00
3.2E+01
3.3E-06
2.4E-01
F-l
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Contaminant of Concern
1992 ROD
Remediation
Levels
(mg/kg)
Residential
RSLa 10 6
Risk
(mg/kg)
Residential
RSL" Hazard
Quotient
(HQ) =1.0
(mg/kg)
Risk1'
HQC
uut
5.5
2.0E+00
J.9E+01
2.8E-06
1.4E-01
DDT
4.75
1.9E+00
3.7E+01
2.5E-06
1.3E-01
Gamma-Chlordane
1.43
1.7E+00
3.5E+01
8.4E-07
4.1E-02
Alpha-Chlordane
1.4
1.7E+00
3.5E+01
8.2E-07
4.0E-02
ROD = Record of Decision
NA = Not Available
NC - Not Calculated
a Current EPA Regional Screening Levels (RSLs), dated May 2023, are available at
https://www.epa.gov/risk/regional-screening-levels-rsls-generic-tables
b Cancer risk = (remedial goal / cancer-based RSL) x 10"6.
c HQ = Hazard Quotient = (remedial goal / noncancer RSL).
mg/kg = milligrams per kilogram
Groundwater
The NC Classifications and Water Quality Standards Applicable to the Groundwater of North Carolina,
NCAC Title 15A Subchapter 2L (NC 2L), were last amended in April 2022. The NC 2L is a Chemical-
Specific State ARAR for this Site.
CERCLA requires that the remedy comply with any standard, requirement, criteria, or limitation under
any Federal environmental law, as well as any promulgated State standard that is more stringent than
any federal standard. The 1992 ROD set the remediation goals as the Contract Required Quantitation
Limits (CRQL) for all eight pesticide COCs. Currently seven of those pesticides have NC 2L Standards
more stringent than the CRQLs set by the ROD. These pesticides include aldrin, alpha-BHC, beta-BHC,
delta-BHC, gamma-BHC (lindane), dieldrin, and toxaphene.
The CRQLs, on which a majority of the remediation levels are based, have not changed; however, the
current NC 2L Groundwater Standards are more stringent. However, as stated above, the remediation
levels set by the CRQLs remain protective. Specifically, the exposure assumptions, toxicity data, clean-
up levels, and RAOs used at the time of the remedy are still valid for the COCs. None of the remediation
goals resulted in a cancer risk greater than 1 x 10-4 for carcinogens or a n on cancer HQ of greater than 1
and, therefore, remain protective of human health, as shown in the tables below. Although the
remediation levels set by the CRQLs remain protective, a review of these remediation levels will need to
be undertaken before the Site can be closed out with the State of North Carolina's concurrence.
F-2
-------
Contaminant of
1992 ROD
1992 ROD
Current NC
Current
Change
Concern
Groundwater
Cleanup
2L" (As of
Federal
in
Cleanup
Level
April 1,2022)
MCL/CRQL
ARAR
Level (jiig/1)
Rationale
(Mg/1)
(jig/1)
(Mg/I)
Yes/No
Pesticides
Aldrin
0.05
CRQL
0.002
NA/0.05
Yes
Alpha-BHC
0.05
CRQL
0.006
NA/0.05
Yes
Beta-BHC
0.05
CRQL
0.02
NA/0.05
Yes
Delta-BHC
0.05
CRQL
0.02
NA/0.05
Yes
Gamma-BHC (Lindane)
0.05
CRQL
0.03
0.2/0.05
Yes
Dieldrin
0.1
CRQL
0.002
NA/0.10
Yes
Endrin Ketone
0.1
CRQL
2
NA/0.10
Yes'1
Toxaphene
1.0
CRQL
0.03
3/5.0
Yes
Volatile Organic Compounds
Trichloroethene
2.8
NC 2L
3
5/0.50
Yes'1
Notes:
ARAR = Applicable or Relevant and Appropriate Requirement
CRQL = Contract Required Quantitation Limit
EPA AL = Environmental Protection Agency Action Level
NA = Not Available
ROD = Record of Decision
a 2L = NC 2L of North Carolina Administrative Code. Title 15A, Subchapter 2L, Classifications and Water Quality
Standards Applicable to the Groundwater of North Carolina
b AR AR has changed but ROD remediation goal is more stringent than the current standard.
BOLD and underlined indicates current NC 2L standard is more stringent than previous remediation goal.
p.g/1 = microgram per liter
F-3
-------
Contaminant of
Concern
Groundwater
Concentration
Goal (ng/I)
Tapwater
RSL" 10 6
Risk (jiig/I)
Tapwater
RSL" HQ=1
(Mg/1)
Risk1'
HQC
Pesticides
Aldrin
0.05
9.2E-04
6.0E-01
5.4E-05
8.3 E-02
Alpha-BHC
0.05
7.2E-03
9.7E+01
6.9E-06
5.2E-04
Beta-BHC
0.05
2.5E-02
NA
2.0E-06
NA
Delta-BHC
0.05
NA
NA
NA
NA
Gamma-BHC
(Lindane)
0.05
4.2E-02
1.2E-01
1.2E-06
4.2E-01
Di el drin
0.1
1.8E-03
3.8E-01
5.6E-05
2.6E-01
Endrin Ketone
0.1
NA
NA
NA
NA
Toxaphene
1
7.1E-02
1.8E+00
1.4E-05
5.6E-01
Volatile Organic Compounds
Trichloroethene
2.8
4.9E-01
2.8E+00
5.7E-06
1.0E+00
Notes:
NA = Not Available
a Current EPA Regional Screening Levels (RSLs). dated May 2022, arc available at https://www.epa.gov/risk/regional-
scrccning-lcvcls-rsls-gcncric-tablcs
b Cancer risk = (remedial goal / cancer-based RSL) x 10-6.
c HQ = Hazard Quotient = (remedial goal / noncancer RSL).
Bold = risk exceeds EPA's risk management range of 10-6 to 10-4 or HQ exceeds 1.
p.g/1 = microgram per liter
Vapor Intrusion
Indoor air concentrations were calculated from groundwater remediation levels for the two COCs
(A1 drin and TCE). As indicated in the table below, none of the groundwater remediation goals resulted
in a cancer risk greater than 1 x 10"4 for carcinogens or a noncancer HQ of greater than 1 and, therefore,
remain protective of human health.
Contaminant of
Concern
Groundwater
Remedial Goal
(fig/1)
Predicted
Indoor Air
Concentration
(jig/m3) for
Residential
Exposure
VISL Model-
Potential
Carcinogenic
Risk for
Residential
Exposure
VISL Model-
Potential
Hazard
Quotient for
Residential
Exposure
Aldrin
0.05
8.99E-05
1.57E-07
NA
T ri chl oroethyl ene
2.8
1.13E+00
2.36E-06
5.41E-01
Notes:
VISL = Vapor Intrusion Screening Level
NA = Not Available
jj.g/1 = microgram per liter
p,g/m3 = microgram per cubic meter
F-4
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APPENDIX G
2022 ANNUAL DOWNGRADIENT AREA MONITORING REPORT
(FEBRUARY 2023)
2022 ANNUAL DOWNGRADIENT AREA
MONITORING REPORT
Site:
GEIGY CHEMICAL CORPORATION CERCLA SITE
ABERDEEN. MOORE COUNTY, NORTH CAROLINA
COMMITTEE CORRESPONDENCE
Submitted To:
MR, JOHN NOLEN
USEPA REGION IV
61 FORSYTH STREET, SW
MAIL CODE: 9T25
ATLANTA. GA 30303-8960
Prepared By:
ENVIROTRAC LTD.
7343 WEST FRIENDLY AVENUE. SUITE J
GREENSBORO, NC 27410
(336) 763-6025
FEBRUARY 2023
A Full Service Environmental Consulting
and Contracting Firm
G-l
-------
Hivir rac
E11 v".ronmental Services
February 9, 2023
Mr, John Nolen
Remedial Project Manager
USEPA Region IV
61 Forsyth Street, SW
Mail Code: 9T25
Atlanta, Georgia 30303-8960
RE1: October 2022 Sampling Event
Downgradient Area Monitoring Report
Geigy Chemical Corporation CERCLA Site
Aberdeen, North Carolina
Dear Mr. Nolen:
On behalf of 01 in Corporation and Syngenta Crop Protection (the Companies), the purpose of
this letter is to transmit analytical results for the October 2022 monitoring event associated with
the Geigy Site downgradient area monitored natural attenuation remedy. The monitoring event
includes the collection of groundwater and surface water samples.
Samples for tfie annual monitoring event -.vere collected October f I and 12, 2022 and were
submitted to Pace Analytical Laboratories in Huntersvilte, North Carolina. Analytical results are
summarized in Tables i, 2, 3, and 4 (Attachment t). Sample locations are shown in Figures 1,
2, 3 and 4 (Attachment 2 i. Copies of the analytical reports are included in Attachment 3,
To facilitate your review, findings of the October 2022 downgradient area monitoring event are
summarized below.
Upper Black Creek Aquifer Groundwater Samples
BHC isomers were detected at concentrations exceeding the performance standards in five of
the seven Upper Black Creek monitoring wells (MW-11D. MVV-I8D. MW-20D, MW-220, and
MVV-30D), Alpha-BHC exceeded the performance standard in MW-tSD. Beta-BHC exceeded
the performance standard in FAV-110, MW-18D, MW-20D. MW-22D and MW-30D. Delta-BHC
exceeded the perfomiance standard in MW-11D, fvlVV-iJD, and MW-30D. The BHC isomer
concentrations in the seven monitoring wells sampled remain within the range of historical
results. Upper Black Creek Aquifer October 2922 groundwater data are summarized in Table i
and in Figure 2. Historical sample results are summanzed in Table 4.
Lower Black Creek Aquifer Groundwater Samples
BHC isomers were detected at concentrations exceeding the performance standards in 9 of the
13 Lower Black Creek monitoring wells. No pesticides were detected at levels exceeding the
perfomiance standards in groundwater samples collected from monitoring wells MY-32L,
MW-36. MVV-38L and MW-3&L, located adjacent to Aberdeen Creek and Ray's M'll Creek. BHC
isomer concentrations exceeded the performance standards in monitoring well MW-40L. located
7 34? pV F i~?r>dly Avtf'Vje. •>' i:>? . -jiefiiwro HC i iJSi fdi "jld c:«>- iSc-t 'irls-f.I.'1-1
Cfe:if'Or F;. -3A iV." \i¦>. h'J, OH PA VA ,VV
G-2
-------
nviroirac
adjacent to McFarland's Branch. No pesticides were delected in the groundwater sample
collected from monitoring well MW-36L, which serves as a sentinel monitoring point for Town
Well No. 2. BHC isomer concentrations generally have decreasing trends. The BHC isomer
concentrations detected in the monitoring wells remain within the range of historical
concentrations. Lower Black Creek Aquifer October 2022 groundwater data are summarized in
Table 2 and in Figure 3 Historical sample results are sum man zed in Table 4
Surface Water Samples
No pesticides were detected in surface #ater samples collected from McFarland's Branch (SW-
I, SW-2, and SW-3).
No pesticides were detected in surface water samples collected from Aberdeen Creek {SW-04,
SW-G5. SW-06. SVV-07, SW-08, and SW-t t-2>.
Mo pesticides were detected in the surface water samples collected from Ray's Mil) Creek (SW-
09).
Surface water October 2022 data are summarized in laDte 3 and in Figure 4.
Should you have questions concerninq the monitorinq results, please contact Chris Hay at
(336)763-6025
EnviroTrac Ltd.
Principal
Enclosure
Cc: Dong ftumford - NCDEQ Superfund Section, wfeme.
NCDEQ D'vVR, w/enc.
Dane Grimshaw - Olin Corporation, w/enc
Peter Jacobson- Syngenta, w/enc.
1l.«CC3'C.X Page 2 Rriumwy 0, 2023
© 2023 E"vrc~ric
Annamarie Blauser. P.G
Senior Scientist
G-3
-------
ATTACHMENT 1
ANALYTICAL DATA SUMMARY TABLES
OCTOBER 2022 MONITORING EVENT
G-4
-------
TABLE 1; UPPER BLACK CREEK AQUIFER GROUNDWATER MONITORING SUMMARY
PARAMETER
ANALYTICAL DATA
PERFORMANCE
STANDARD
SAMPLE LOCATION
MW-1 ID
MW-15D
MW-2ZD
MW-22D
MW-23D
MW-26D
MW-30D
DATE COLLECTED
10/1 -122
10,'1/22
10.' 12,'2 2
10,'12,-22
10/12/22
10; 12,'22
10,' 1' .'22
41 drin
Q.C63 U
0.243 U
0X50 U
0X50 U
0X50 U
0X50 0
; :-3
-:5
a,lpha-'3hC
0.C&3 U
0.10
0X50 U
0X50 U
0X50 U
0X50 U
0X43 U
i;-e;a-B-C
i.4
2.7
0,45?
0..20
0X 50 U
0X50 U
1r6
C" 05
ae ta-BHC
0,14
'3.20
0X50 U
0X50 U
0X50 U
0X50 U
0.073
:> 05
gamma-SHC (Lindane;
0.263 U
0." 1
0X50 U
0 ISO U
0X50 U
0X50 U
0X43 U
c:
alpha-Chlorda.ne
0X63 U
0X43 U
0.250 U
0 C50 U
0X50 U
0X50 0
0X43 U
ne
samrra-CNoraane
0X83 U
0X43 U
0X50 U
0X50 U
0X50 U
0X50 U
0X43 IJ
i,E
l r ¦:r r
0.50
•9.56
0X50 U
0X50 U
0X50 U
0X50 U
0.25
2 :
- 4'-: : r
0.C63 U
0X43 U
0X50 U
0X50 U
CX50 b
0X50 U
: ¦.
r.E
i 4'ODE
0X63 U
0.043 U
0X50 U
0X50 U
0X50 U
0X50 ij
0X43 U
NE
a 4'ODT
0.383 U
0.-43 'J
0X50 U
0X50 U
0X50 U
0X50 U
0X43 U
N =
o :.:.o l
0.343 U
0X50 U
OX'50 ij
0X50 U
0X50 U
0X43 U
r.E
Ensosulfan ,'i
0X83 U
0.343 U
0X50 U
0X50 U
0X50 U
0X50 U
0X43 U
r;E
Ensosulfan sulfate
0X63 U
0X43 U
0X50 U
0X50 U
0X50 IJ
0X50 U
0X43 IJ
r.E
E"!.":'" "
0X83 U
0X43 U
0X50 U
OXbO 'j
0X50 0
0X50 U
: c
ne
En dm aldehyde
0X83 U
0143 U
0X50 U
0X50 'J
0X50 U
oxso U
0X43 U
r.E
En dm ketone
0,34
n *»*?
ij
0X50 U
0X50 U
0X50 U
0X50 U
0,27
-
Heptaciiior
0X63 U
0X43 U
0X50 U
0X50 U
0X50 U
0 350 L.
0.C43 U
r.E
Heptaehlcr ecocide
. l
0,u43 U
0X50 U
0X50 ij
0X50 U
0X50 U
0X43 U
NE
Methosychlor
: :=
Q.;3U
0. "5 U
0/5 U
0/5 U
0/5U
0/ 3 U
r.E
Tosaphene
4,6
3,9
" 5 U
C 5 U
C 5 U
2 5 U
2,3
1
TncRl&roetRene
1.0 U
1,0 u
Ha
NA
rjA
NA
1.0 U
¦¦
MOTES NE = f.o standard established
Resu ts are presented >n micrograms c*r liter NA = Not analyzed fcr tms compound
j = Estimated value !ess than the reporjng limit but greater t^an the method dstettion I. nut ' 1 = LC Si'LC S3 RPD exceeds control iimtis
p = The %R~D between the primary and confirmation coiur»in.'d»tector is >40%. The lower value has been reported,
U = indicates the analyta was net detected
J- = LC3 ard.'or LCSC 3 outside accectarct liniis high b.ased.
** = Tficrilcrc.ethene is not a COC tor the G>e>gy site.
BoM = Concentration e/ceeds performance &t8M3ard w me-the3 detection limits if no standard -s established
11.§901110.00'
©2023 EnviroTrac
February 2023
-------
TABLE 2: LOWER BLACK CREEK AQUIFER GROUNDWATER MONITORING SUMMARY
PARAMETER
ANALYTIC AL DATA
PERFORMANCE
STANDARD
SAMPLE LOCATION
MW-22L
MW-25L
MW-27L
MW-31L
MW-32L
MW-36L
MW-37L
MW-38L
MVV-39L
MW-40L
PZ-2
PZ-3
PZ-5
DATE COLLECTED
ion 2/22
'0 12,22
10/12/22
10/12)22
10/12/22
10/12/22
10/12G2
1:/ 2'22
10/12?22
10'12'22
10/12/22
"Q'"2'22
10/12/22
-
§..0-50 U
0 ISO L
0.045 U
0 045 U
: .
;.
; if: .
0 C'5D
0.050 U
0 G^I -J
0.050 U
I 051 v.'
0.05
¦Ufa-SHC
0,10
0,47
0.60
0,21
: 050 u
G 050 U
0.55
0 051 .
0.050 U
C.2 2
0.15
0.12
0,41
0.05
i e*a-BH :
0 44
1.81
1,7
0.59
[ 050 U
0 050 U
0,5»1
0 051
0.050 U
0.15
0 45
0.05
ceta-BHC
t» 21
1.30
1.1
0.58
:: .
1.40
0 051 j
0.050 U
i .=1}
0.15
0.46
005
SC.! si fan 1
: 050 u
0 C50 >.
0 C45 U
0 045
Z 050 U
. .
0 £50 U
oos:„
0.050 U
C 042 U
0 CM L
0 C50 L
I D5C u
NE
= IVl.?!]fCn It
: :r:
: .
;-r
: .
I 050 U
: :rc ..
u 051 „
0 050 U
¦ .
:
NE
5t>1c£i fan sulfate
: 050 u
0 250 I
0 145 L
. .
: 050 u
0 050 IJ
0 150 U
0 051 l
0.050 U
0 ZSQ «j
I .
: 05; .
ME
=
; 050 u
o :so k.
0 C45 ij
0.045 U
C, 050 U
0 050 u
0 C50 I
0 05C J
0.050 U
0.042 U
0 Z50 y
NE
Endri siaeh, l»
:
: ::: .
o :45 u
0.045 U
: 050 u
0 050 U
¦
o o?: j
0.050 U
0.042 U
0 153 »J
; 05; j
NE
Erdn- r-=tcntr
: 050 u
0 150 L
0 f5
0.045 U
. 050 U
0 050 U
0 155
0 Z5Z .
0.050 U
0.045
0 C50 t
; 05: j
0.1
H-p-1?! r
: 050 u
o :so ¦.
0 C4= y
0.045 U
: 0=0 u
0 050 U
0 "50 L'
0 05 C J
0.050 U
0.042 U
o :so j
:
NE
...
: .
- .
¦ .
0.045 U
C 050 U
0 050 U
:•
0 051 L
0 050 U
0.042 U
.
NE
Methoxychlor
0 15 U
0'U
0.14 U
0.14 U
: : .
0 IS u
0 -r L
: 15 ^
0.15 U
0.12 U
I : .
. : .
C 15 J
NE
" -?
.
0 50 •-
0.45 U
0.45 U
0 50 U
0 50 U
0 50 U
: si t
0.50 U
0.42 U
0 50 L
1
NOTES
Results are presented in micrograms per liter
E = Result exeeded calibration range.
J = Estimated value less than the reporting itmtt but greateritian the method detection limit
p = The %KPD between the primary and confirmation coturrm/detector is >40%. The lower value has been reported.
NE « No standard established
U = indicates the anaiyte was not detected
*- = ICS and/or LCSD is outside acceptance fcrore, tow biased.
4+ = LCS and/or LCSD is outside acceptance iimis. high biased.
*1 « LCS/LCSD RPD exceeds control [tofts.
Bold = Concentration exceeds performance standard or method detection limits if no standard is established
1 un m
j •."* En» -sTrac
February 2023
-------
TABLE 3: SURFACE WATER ANALYTICAL SUMMARY
PARAMETER
ANALYTICAL DATA
SAMPLE LOCATION
McFARLANDS BRANCH
ABERDEEN CREEK
SAY 5 MILL
3 *>'-02
SVV-03
5W-04
5W-25
SvV-06
SW-07
S'A'-CS
5W-11-2
SW-09
DATE COLLECTED
:. i
•0,'11/22
10." *'22
1C/ 11/22
ia.T1.-22
f0." 722
10/11/22
10.'11(22
"Or *.'22
Aldrn
¦I- 042 .
0 042 U
:x*2 u
0 042 J
0 042 J
2.2-2 t
0.0^2 U
0.042 U
0 042 U
2X42 IJ
alpna-EHC
0 042 J
0 042 U
: :^2 u
0.042 J
0 042 J
2X42 U
0.042 IJ
0.042 J
0 042 U
CX4Z IJ
beta-BHC
0 042 U
0 042 U
2X4; U
0.042 J
0 042 J
2X42 L
0,0*2 U
0.042 J
0 042 U
2X4: u
delta-EMC
0 042 .
0,042 U
c.:^2 u
0 042 J
D.042 J
C,l-2 Ls
0.04-2 U
0,042 J
0 042 U
CX42 U
aanma-BHC i-raane
: ci42 .
; 042 u
:.oj2 u
0.042 U
0 042 J
0.042 U
0.042 J
0 042 U
:X42 u
alpna-Chlcrdane
;¦ 042 .
3 042 U
2 u
0.042 J
0.042 J
C.CC U
0.042 U
0,042 J
0.042 U
2X42 U
oamma-Chiordare
: 0-^2 .
2 042 U
C.C42 U
0.042 J
0 042 J
C'X-2 U
0.0*2 U
0.042 U
0 042 U
CX42 U
Dse^dnn
2 042 _
C 042 U
C.2-2 U
0.042 J
0.042 J
u,'u4^ 0
0.042 U
0.042 J
0 042 U
2.2-2 IJ
4--DDI
: 042 .
0 042 U
2.2«c u
0.042 J
D 042 J
2X42 U
0.042 U
0,042 J
0 042 U
CX42 IJ
4 -XXii
; 042 .
0 042 U
CX42 U
0.042 J
0 042 J
2X^2 u
0.042 IJ
0.042 J
0 042 L
LI
4 4'-D D 1
0 042 J
0 042 U
2X42 U
0.042 J
0 042 J
C.D42 40%. Trie lower value nasi been reported.
U = indicates the analyte was no? detected
1 = Total suspended solids are
-------
TABLE 4; HISTORICAL SUMMARY OF GROUNDWATER SAMPLE RESULTS
PARAMETER
1
|
1
X
z -
a- 5
u
1
8
a
9
m
|
"b
Ul
r7-
iU 3?
*
1?
ui
I
1 "5
X
5
is
1
S
PERFORMANCE
STANDARD
0.05
0,05
0.05
0,2
NE
HE
0.1
ME
NE
NE
HE
NE
NE
NE
\ =
0,1
NE
NE
HE
2-5 U | 2.5 U,Q | W
" I I
0 55 U J 0,55 U
11 U I 0.55 U I D.55U
5.5 U I 11 U i NA
EMU
0,3® I 0.23
0 05 U 0.05 I
0.1 U I 0.031 J f 0.05 U 0.05 L
0.5 u 2.0 U i NA
«ea
0-25 U |
0.25 U I 0.25 U
2.5 U 1 101) j NA
" I 0-05 U I 0,013 J I 0 OS U I 0.05 U [ 0.05 U I O.QS~U
o.i y l o.i u i o.i u i o 05 u i 0-05 u
0.19 u
BA9V
3,9' D*
0,079 J,D,P| 0,044 J.D
0.19 U
0.19 U
0.57 D
0 39 U
0.39 U
0 39 U
0.19 U I 0.39 U
0 39 li
0 39 U
0.39 U
0.46 D
0-19 U
0.073 J,D,P
1.9 U
19 L)
NA
U
0.9
1.3
0.047 U
0.047 U
0.047 U
Q.Q98
0.094 U
0.094 U
0.094 U
0.047 U
0.094 U
0.094 U-
0.094 U
0. 094 U
0.053 J
0.047 U
0.047 U
0.094 U
4.7 U
10 u
10/11/11
.013 J
1.1 D
0.21 D
0.018 Jp
0.050 U
0.050 U
0.13
0.099 U
0.067 Jp
0.099 U
0.050 U
0.099 U
0 099 U
0 099 U
0.099 U
0.086 J
0.050 U
0.050 U
0 099 U
50 U
1.0 u
10/23/12
123 U
1,2 D
0.29 D
0.23 U
0.23 U
0.23 U
0.18 JD
0.23 U
0.23 U
0-23 U
0.23 U
0..23U
0 23 If
0.23 U
0.23 U ^
0.23 U
0.23 U
0 23 U
0.23 U
23 U
1 ou
tOrtSi'lS
-041 J
8,7 El>
1.3 Ed
0.087 p
o.os u
0.05 u
1,6 E
0.05 U
; : .
0.05 U
0-05 U
0.05 U
0.05 U
0-05 U
0.05 U
1.1 E
0.05 U
0.27
0.05 U
7.4 p
--
10121/14
0.5
0.19
0.048 U
0.045 U
0,016 J
0.13
0,043 U
0.048 U
0.011 J
0.043 U
0.048 U
0,0092 J
0.048 U
0.048 U
0.049
0.048 U
0.016 Jp
0 048 U
1.2 J
^ ami
5
0,049 U
0.75
0,31
0 049 U
0.049 U
@.01 Jp
0.25
0 049 U
0.049 U
0.049 U
0.049 U
0.049 U
0.049 U
0.049 U
0.049 U
0.073
0.049 U
0-026 Jp
0 049 U
2.7 J
1 ami
8
0.14
4§
0,40 p
0.077 D
0.050 U
0.050 U
6,2
0.050 U
0.050 U
0.050 U
0.050 U
0.050 U
0.050 U
1,5
0.050 U
6.4
0.050 U
0.52 p
0 osct u
24 p
NA
: Mm
7
0.052 U
0.052 U
0.052 U
0.052 U
0,15 p
0.052 U
0-052 U
0.052 U
0.052 U
0.052 U
0 .052 U
0.052 U
0.052 U
0.052 U
0.052 U
0.052 U
0.052 U
0.052 U
0.052 U
5.2 U
0.080
16
0.30 D
0.052 D
0.049 U
0.12 p
3.1
0 049 U
0.049 U
0.65
Q.049U
0.049 U
0 049 U
0 049 U
0.049 0
3,1
0.049 U
0.29 p
0.043 U
32
NA
0.013 Jp
0.020 J
4.7
0.26
0.024 J
0.0S2 U
0.075
0.70 J
0 052 U
0.052 U
0.052 U
0.052 U
0 052 U
0.052 U
0 052 U
0 052 U
0.73
0 052 U
0-098 P
0.052 U
5.5 p
NA
0-10 u
0.10 u
43
0.10 u
0.10 U
0.10 U
0.10 u
1.2
0.10 U
0.10 U
0.10U
0.10 U
0.10 u
o.io If
0.10 u
0.10 U
0.53
0.10 u
0.10 u
Q.30U
5.4
NA
0.049 U
0.0097 J
2,6
0,10 P
0.020 J
0.049 U
0.029 J
0.35
0.049 U
0.049 U
0.049 U
Q.Q49 U
0.049 U
0.049 U
0.049 U
0.049 U
0.11
0.049 U
0.035 Jp
0.049 U
1.4 Jp
1.5
0 050 U
0.050 U
0.05Q U
0.050 U
047
0 050 U
0.050 U
0.050 U
0-050 U
0.050 U
0050 U
0.050 U
0.050 U
0.18
0.050 U
0.050 U
0.15 U
3,7
0,51
2,5 0
0,58
Q.05 J
0.5 U
0.5 U
0.44 j
1.0 u
1.SU
1-0 u
0.5 U
1.0 u
1..0U
1.0 u
1.0 u
0.27 J
0.07 J
5.0 U
15
jsrtf iJumrrf m; cspv»m
0 2^-6
** L
' ^ JAR
8,8
2,0
0,25 J
9.08 J
0.59 U
0.79 J
1.2 U
1.2 U
1.2 U
0.59 U
1.2 U
1.2 U
1.2 U
1.2 U
12 U
0.59 U
0.18 J
5.9 U
12
NA
l ^Sc*
*er 'Vitamer
-------
TABLE 4; HISTORICAL SUMMARY OF GROUNDWATER SAMPLE RESULTS
PARAMETER
i
I
I
s
<
I
S
t"
8
V
I
^r
1
1
|
|
c
§1
1 ^
c
"«S
1
uu
|
%
6
&
i,
|
f
&
1
¥~
PERFORMANCE
STANDARD
0-05
0.05
0.05
0.05
0.2
NE
ME
0.1
NE
NE
NE
NE
NE
NE
NE
NE
0.1
NE
NE
NE
1
n u i
0.25 U
0.25 U
1.3
0.17 J
0.25 U
0.25 U
0.25 U
0.1 J
0.5 U
0.5 U
0.5 U
0.25 U
0-5 Uf
0.5 U
0.5 U
0. 5 U
0.13 J
0-25 U
0.25 U
2.5 u
10 u
NA
2 e» iu
£
ted
J
-
S3 -„c - n -rn
m
28
1Q/24/08
§.4?U
14-
3.5 D
0.18 J.D.P
0.47 U
0.47 U
0.47 U
0,51 J,D
0.94 U
0.94 U
0.94 U
0.47 U 1 0.94 U
0.94 U
0.94 U
0.94 U
0.36 J.D I 0.47 U
0.47 U
4.7 U
47 U
NA
2009 AnnuaJ Sinpiir z *- n i -
10/12/10
m j r
2,4 Ed
0.65 p
0 048 Jd
0.049 U
0 049 U
0.73 0
0.098 U
0.098 U
0.098 U
0.049 U
0 098 U
0.098 U*
0.098 U
0.098 U
0.37 D
0 049 U
0.049 U
0. 098 U
4-9 U
1.0 U
"0" 'i*
i i
0 I'D
0.10
OOSkU
. = . .
0.13
o -1 J
: 11 l
0 11."
. .
.
0 ' U
'
"
9.10 J
0 053 j
0 11
f 7 J
.
-coyr:
1.WO
..
0221
o::u
0 33 0
0 22 J
Q.ori JO
0 22 J
0 22 U
..
.
0 22 J
:
0 22 w'
. -
22 U
* . .
Z-rsri
I 4~
2.2 Ep
0,17
"
0 OS L1
i' 95 Ep
0 0*P J
--
0 04&U
0 04e L
0 048 -
0 33 p
: 045 L
0 045 O
0 0^8 J
T«P
-
¦OZ'tu
U J J
3.7
0,5
,
0 043.
1.5
0 04^ .•
c u
0 04b l'
0 043 U
0 049 u
0 04^ 1.
I 04^1
0 04a w
U4^r
v 049 L
0 049 ..
0 04^ .•
1 7
n-
*oo?'-s
'!, I"-L' i I .'.
U H I
i.6
n.28
: c
:
o :ei u
0.54
0 0:1 J
j u
0 0£1
0 051 U
0 051
0 05 L
: 05* L
0 051 w.
0.30
. 05* y
0 05
0 051 J
9.15
Ha
: :i .
o yw> r
UU^ J
2,5
. 1:
0.22
-
0,87
OOf? „«
: .
0 Of? _¦
0 053 U
0 056 >.
.
.. - .
; .
0.2y
: 055 y
. .
0 05.^
rji
:.
j
2.8
. - -
. -
•j QE; J
0.75
0 05? J
: :f?u
0 05? J
0 05- J
0 05:. U
0 05 j y
: 05? i<
0 053 J
0.50
: 053 y
u 053 0
0Qrio
6.9 p
rji
0,'22'*5
; :?z i
0 047 J
4.9
0.15p
0 052 u
o:siu
1.3
0 052 -
z:®: u
y.83
0 052 U
0 052 U
0 052 L
: 052 L
0 052 .
0.81
: 052 L
0 052 J
0 052 J"
22 p
NA
; ;i& l
: iz
84
1.7
0 049 U
0 049 J
:
2,2
0 049 .
: u
0 24 J
0 049 y
0 049 U
0 049 L
l 0491
0 049 L
fi,y6
; 049 l
C 049 j
0 049 .1
26 p
fP
0 20,'20
; ^5 l
0 2E J
52
0.^3
0 25 L
0 25 c1
02EU
2,8
0 25
2 25 L
0 25 j
0 25 U
: 2:.
0 25U
0 251
0 25 J
1,1
: 25 y
0 25 .
0~5 _¦
r-A
rJA
: c-*& l
0 0F J
2,4
0.-^4
0 0"2 «.p
0 0-*9 „
o u
¦5.40
0 049
; :49 u
0 049 .
0 049 U
0 049 U
0 049 L
2 049 L
0,15
:.
0 049 _¦
:.
3,1 Jp
NA
:.
1.9
0,083
0050 O
::::.
: .
0.52
0 050 J
: :r,.
0 050 J
:::: .
0 050 y
Z 2:" .
;.
:.
0,2S
;.
0 050 J
: w
4,3
Ni
MW-6S
t ¦
6 6
5.0
2,4
0.58 J
' 0 t
.
,
.
0.32 J
05 J
- .
20
NA
-T *
•0 29,%
D5SL
1,8 O.R
71
4,6
1.1
;:-
0 e.i 'J
i}„25 J
' 1 o
I 1 L
0 56 U
• L< ' 1
1.1 U
C 5€ y
0.12 J
5 6 .<
It
-
tSS$ is! Quart* not Saw**
13S9 2ntf Gwarfef raof Sautes'
1999 Snaf Ou*rt»r not Samafed'
50/14/99
1.0 U.Q
3.9
6.9
18
2,0
1.0 u
1.0 u
2.0 U
2.0 U
2.0 U
2.0 U
1.0 U
2.0 U
2 0 U
2.0 U
2-QU
2.0 U
1.0 y
1.0 U
10 u
40 U
NA
2000 ?af Quarter not Sampled
2000 2nd {3oarfer r»* Sampfea
200Q 3rd Quarter rcsf Sarwled
0-05 U
0.05 U
0.05 U
0 05 U
0..05 U
0.05 U
0.05 U
0.1 U
0,1 u
0.1 u
0.1 U
0.05 U
0.1 u
0.1 u
0.1 U
0..1 U
0.1 u
0.05 U
0.05 u
0.5 u
20 U
NA
u i 1.2 U
3.5
10
15
0.91 J
1.2 U
1.2 U
2.5 U
2.5 U
25 U
2.5 U
1.2 U
2.5 u
2.5 U
2 5 U
2-5 O
2.5 U
1.2 U
1.2 U
12 u
50 u
NA
_ _ g.Annum
ed
. <. Jn-ual Samptin £ en n m- o
_.1W Ari/W Sanvtit
gEvntnot^
2i
g Event no! Sampled
-
*
. t_Jnus/S«npm >a/ Samptfn E
0.048 U
0.048 U
0 IJ
0.3S p
0 048 U
U.U4C5 U
U.U40 U
U.U40 U
Q.04S U
0.048 u
0 04?
0 048
0.34
0.048 U
0.048 U
0.048 U
5Jp
NA
11.990010.00
© 2023 EnvtroTrac
Page 2 of 22
February 2023
-------
TABLE 4: HISTORICAL SUMMARY OF GROUNDWATER SAMPLE RESULTS
PARAMETER
1
1
I
I
Is
II r
tr
I
4-
*
Q
9
?
•sf
c
f
1
Ui
--
(_i
-
I
s
5
1
X
:
I
i
|
"
S
|
PERFORMANCE
STANDARD
0-05
0.05
0.05
0.05
QJ2
NE
NE
0.1
NE
NE
NE
NE
NE
NE
ME
NE
0.1
NE
NE
NE
*,
10/21/14
0.0099 Jo
0.043 J
1.9
0.62
0.05 U
0.05 U
0.035 J
0.12 p
0..05 U
0.05 U
0 05 U
0,05 U
0.05 U
0.02& J
0.05 U
0..05 U
0.11
0 05 L
0 05 U
0.05 U
2,1 Jp
NA
10/20/15
: .
0.11
7,3
1 7
vi 3
0.05:
U c M
o.43 ;:" .
Q.§51
. ;¦ .
::: .
C 05 U
:::
0,39
0 05 L,
0 05 j
0.05 U
7.6 p
MA
10/05/16
0.039 J
2.8
>1,24
• "
0.051
C1 M
0.22 . .- .
0,051 L
G 051 .
0 C5 i U
0 05' U
: 05- u
0 051 l
0,18
: 05- u
<1m 32 j p
0.051 U
4.2 Jp
NA
10/04/17
C C4PL
0.028 J
2,4
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0.049
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:.
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0.20
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7.5
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10/22/18
Z 2511
0.049 Jd
8.5
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0.13 n
1 c_ 11
0.54 f . .
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0.36 D
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12 p
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50/56/19
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0.019 J
1.4
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0.048 s.
1 !4>- i
0,30 . ;i:.
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:
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u 045 L
0 045 L
: 04o L
0 04* .
0,20
: .
0,038 Jp
0.048 U
4,5 Jp
NA
10/20/20
c :?oi
0.050 U
0.050 U
U U-il.I :j
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0 0-50 U
fl.U-C L
0 050 -
0.050 L
0 050 -•
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0 050 J
0.19
.
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11/01/21
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0.019 J
2J
0 0?2 Jp
: ce • c
0.052 U
0.081
0.48
0 052 J
0.052 U
0 052 .
e 052 u
0 052 L
0 052 L
2 052 L
0 052 .
0,25
: 052 u
0.072 p
0.052 U
6.2 p
NA
10/11/22
0.045 U
0,75
Z 045 .
0.045 U
0.045 U
0.17
0 045 .
0.045 U
0 045 _
0 045 U
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0 045 L
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0 045'.
0.12
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0.14 U
4,9
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MW-10S
Q4.C t/98
0.5 U
0,39 J
7,0
1.6
1.34 J
0 .5 U
0.5 U
0.9 J
1.0 u
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1.0 L1
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11 0'.
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5.0 U
8.4 J I 5.0 U
f 39® 3rd Quarter not sampled
10/23/98
0.56 U
0.085 J.O.R
4,5
0.41 J
0.11 J
0.56 U
0.56 U
0.27 J
11 u
1.1 U
1.1 u
0.56 U
1.1 u
1.1 u
1.1 u
1.1 U
1.1 u
0.56 U
o.ssy
5.6 U
11 U
1,0 U
1999 1st Quarter not Sampled"
1999 2nd Gm?te? not Sampled
fSKW ,:W ,Oi.wrf»f r?oS Sampled
| 0.25 U,Q
0.045 J
2.3
0.21 J
0.064 J
0.25 U
0.25 U
0,17 J
0.5 U
0.5 U
0.5 U
0.25 U
0.5 U
0.5 U
0.5 U
0.5 U
0.40 J
0.25 U
0.25 U
2.5 U
10U
10 u
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_ o *.nu vuafief not Semoied
SOW 3rd Qisrfe/ etot
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108
0.077 J
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0,21 J
0 5 U
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0.5 U
0.25 U
0,5 U
0.5 U
0.5 U
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0,24 J
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2001 SensMnnuaf m
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1.0
0.65
0-058 J
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0. 5 U
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0.5 U
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0.5 U
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10/21/08
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0.33 U
0.19 U
0.38 U I 0.38 U I 0.38 U
0,38 U
0.36 J,D I 0.19 U
0 19 U
1.9 U
19 U
1.0 u
2009 Annua/Sarr"-
re-n'n r
10/12/10
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10/15/13
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0 OtO
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5.2
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0.05 U
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0 52 U
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1.0 u
11.SaU10.0G
© 2023 EnvrroTrac Page 3 of 22 February 2023
-------
TABLE 4 HISTORICAL SUMMARY OF GROUNDWATER SAMPLE RESULTS
PARAMETER
PERFORMANCE
1^5? 3ts r€o
IW-a W aj«r,rr;;
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n
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Page 4 of 22 Febroary 2023
-------
TABLE 4: HISTORICAL SUMMARY OF GROUNDWATER SAMPLE RESULTS
=APAMETEP
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-------
TABLE 4: HISTORICAL SUMMARY OF GROUNDWATER SAMPLE RESULTS
PARAMETER
1
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0.083 U
0.083 U
0.083 U
0,34
0.083 U
0.083 U
0.25 U
4,8
1.0 u
MW-16D
"...
::tu
0 05 u
; c? u
0.05 U
2 25 U
0 05 U
0 -J
0f,<
0.1 U
0.1 u
005 U
D.1 U
0 1 U
0-1 u
0.1 U
0.1 U
0.05 U
0.05 U
0.5 U
1 0U I2&DO
-:;o
••
0.Q5U 1 0.05 U.R
0 05 .
C 25 U
u05 U
" --
: _
0.1 U
u J
0.1 u
01 u
0.05 U
0.1 u
0:1 U
0.1 u
0 1 U
0.1 U
0.05 U
0.05 U
0.5 U
1-0 u
270
,999 2*4 Quarter not Sampled
rt»3rtfQuwWrnoi
1999 «b Our* po.'
oampmt
2000 2nd Quarter
i on 3/00
0.05 U
0.05 U.R
0 .05 U
0.05 U
0.05 U
0 05 U
0.05 U
0.3 U
0.1 u
0.1 u
0.1 u
0 05 U
0.1 u
0.1 U
0.1 u
0.1 u
0.1 u
0.05 U
0.05 U
0.5 U
2.0 U
260 E
© 2023 EnviroTrac Page 6 f/ 22 February 2023
-------
TABLE 4 HISTORICAL SUMMARf OF GROUNDWATER SAMPLE RESULTS
PARAMETER
1
1
!
I
iu ¦¦¦¦•
J -3
c —i
¦IS —
I
S
Q
Q
~
f
-
c
-
: 1 I
s 1
It
1!
b
"
PERF'^RMAHi E
STAtiDAPD
0.05
c™c
o.os
0.05
0.2
NE
ME
0.1
NE
NE
NE
NE
NE
HE
NE
HE
0.1
NE
HE
NE
i
-
— 4 ni
ai it-
JO'I
0.05 U
<>¦
0.05 U
0.05 U
0 0? u
0.05 U
0 05 U
0.1 u
0.1 U
0.1 U
0.1 U
0.05 U
0.1 I?
0.1 U
0.1 U
0.1 U
0.1 u
0 05 U
0.05 U
0.5 U
2.0 U
19QQ
_
-""j. "jE* in
Mt
3903 Ararata? SampRr
*t Ev+nt nctf ^
2004 Annual SmmUm Ernst not
-
2006 Annua? Samstm
-
_ -
0 1* I 0
1.0 0
0.057 J.D.P
0.14 J.D
0.19 U
0.19 U
0.093 JX
0.19 U
0.39 U
0.1? U
0.39 U
0 39 U
0.39 U
0.39 U | 0.17 J.D I 0.19 U
0.19 U
1.9 U
19 U I 9.4
-cnj. -t
r _ c
f "
tr
\s
N3
'¦J3
NS
NS
NS
N j
NS
n:
n:
NS
m
NS
''T
n:>
\ij
n:«
N5
CC
ii
rm
!!-
#«A
tM
NA
NA
N*
NA
NA
NA
n*
N-
NA
NA
HA
\ t
n-
"•5A
N->
«I9
-
na
NA
N-
NA
NA
NA
rju
NA
\4
f.-
NA
NA
Nm
UA
'J-
-
•JA
100
0 ! %
I H
u*
'A
NA
NA
NA
na
NA
u-
NA
*«A
N-
NA
NA
(,a
N-
CJA
"JA
d2
L! 22 4
r
n-
\A
NA
MA
NA
t.t
NA
N~
MA
'h|A
na
NA
HA
Nfl
NA
NA
N-
5?
-
t>*
-
IJ*
NA
NA
NA
NA
-
NA
n-
NA
NA
Nm
N-
UA
N-
_
? J-
'iA
5$
-
-
Nrt
-
NA
NA
NA
MA
NA
na
NA
-
NA
NA
NA
NA
NA
" -
-
-
"J-
5.
r
n-
Mi
NA
-
NA
MA
NA
NA
NA
-
NA
NA
NA
N
NA
-
N-a
NA
NA.
NA
NA
NA
NA
Nm
NA
na
NA
na
NA
HA
Mm
\A
HA
p;-
N.i
4c
10/16/19
NA
NA
f*A
NA
NA
NA
Nm
NA
NA
NA
-
MA
NA
NA
NA
NA
NA
"JA
'g<-
•-
'JA
90
113/21/20
NA
NA
NA
NA
NA
MA
NA
NA
NA
NA
NA
NA
NA
NA
NA
fi-.
-
-
c :
12/06/21
NA
NA
NA
NA
NA
NA
r.A
NA
NA
NA
<¦*«
NA
NA
NA
HA
NA
I 4a
-
-
10/11/22
NA
NA
"
NA
NA
NA
NA
NA
NA
NA
NA
MA
NA
NA
NA
NA
NA
-
-
N»-
04/21--98
0.05 U
0.05 U
0.05 U
0.05 U
0.05 U
0.05 U
0 05 U
0.1 U
0.1 U
0.1 U
0.1 U
0.05 U
0.1 U
0 1 t>
0.1 U
0.1 U
0 j
0 05 J
—-
05 J
•0L
T5SS 3n? Quarter mi smwfed
1Q/2SW98
0.05 U
0.05 U.R
0.05 U
0.05 U
0.05 U
0.05 U
0.05 U
0.1 u
0.1 u
0.1 u
0..1 u
0.05 U
0.1 u
0.1 Ii
0.1 u
0.1 u
0.1 u
0.05 U
0.05 U
0.5 U
1.0 u
350
1999 1st Quarter nc* Sanpfctf
1999 2nd Quart* not Sampled
1 3nd Quarts^ mS Sampled
1999 4th Quarter no! SampM
20GCJ is! Quarter not SafrpttH
2000 2nd Ckmter notSarmM
2000 3rd Quarter mt. Sampled
10/13/00
0.05 U
0.05 U.R
0.051
c:? u
0Q?U
0.05 U
0 05>J
0.1 u
0 1 J
;il
01 J
0 05 U
DM.
0 i.
0..1 u
0- -
005 <
0.05 U
OQ
2001 Sssn-Aomai mi Samplea
10/10(01
0,05 U
0.05 U
0.05 U
;:?u
: >" .
0.05 U
o 05 u
0.1 u
0 1 J
in
: -
0 05 L
0 L
0
: -
" -
:• -
0.05 U
2.0 U
NA
28Q2 Semi & Annus! Sampimg Everrt nor SaiKpfed
2003 Annual Samoima Event not Sampled
2004 Amnu^ Sampgog Event net Sampled
2005 Annual Semolina Event not Sameied
2006 Annual Sampling Event not Ssnpterf
200? Annual SarwOn
10/21/08
NA
NA
NA
NA
NA
NA
N*
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
250
24X59 Annus; Sa^oftna Event no? Samsterf
10/14/10
MS
NS
US
NS
NS
NS
r.s
NS
NS
NS
NS
NS
NS
NS
NS
N5
NS
NS
NS
NS
NS
230
10,'11/11
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
MA
NA
NA
NA
NA
NA
NA
NA
190
... I MA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
fr-
itO
Page 7 of22
February 2023
-------
TABLE 4: HISTORICAL SUMMARY OF GROUNDWATER SAMPLE RESULTS
PARAMETER
1
!
I
i
!:
i"
1
J
a
Q
s
1
S
iS
1
e:
c Ul
j.
c
|
- T
iS
5
3
1
"
H
5
2
I
.
I
1
°ERFr*PM4NCE
STANDARD
0.05
0.05
0.05
0.2
NE
NE
0.1
NE
NE
HE
HE
NE
NE
NE
0.1
NE
HE
NE
1
«
C4 in
0.25 U
0.81
0,67
1 1
0,8
0.25 U
0.5 U
0.5 U
i] 25 U
: .
0.5 U
0.5 U
0.51
: .
0.25 [J
0.25 U
2.5 U
1QU
NA
G~ 2 Ut
0.25 Q
0X9
0.62
0.67
0.25 U
0.5 U
0.5 U
" 1"
; .
0.5 U
0.5 U
0.5 1
:1.
0.25 U
0.25 .
' _
10U
NA
C Cr
0.25 Q
0,8
0,75
¦1.0
0,75
0.25 U
0.5 U
-
0.5 U
0 25 U
0.5 U
0.5 U
0.51
: =.
0.25 U
0.25 .
10 u
NA
0 1 u
0.25 U
-710
0.75 Q
J
0,75 Q.
0.25 U
: -
0.5 U
0.5 U
:
0.5 U
0 5 U
0.51
: : .
0.25 U
0.25
11 u
NA
l r<-
0.05 U
0*5
6.41
0.45
0.05 U
o • L
0.1 U
U L
0.1 u
0 05 U
0.1 u
0.1 u
0.1 I
0 1 j
0.05 U
0.05
0 5 k.
2 U
NA
14 1 «¦ f£
0.05 U
n jb
0.37
n 1
0.35
0,1 G
0 041,
0.1 U
0.2 G
0 05 U
0,2 G
0.1 u
0.1 u
0.2 G
o :4i.
0.05 U
0.1 G
05 o
2 U
NA
L _ ' "•
0.05 U
031
0.33
-
0,31
0.05 U
0 - u
0.1 U
0.1 u
0 05 H
0 l
0.1 u
0.1 u
0.1 i
0 1 o
0.05 U
0.05
2 U
NA
10/06/03
01 u
0,t
0.19
0.18
0.12
0.1 u
_
0.2 U
0.2 U
0 2 u
0.2 U
0,2 U
0.2 t
0 2 J
0 1 u
0.1 f
I iJ
4 U
NA
1W2Q/Q4
0.05 U
n,089
0.11
0.12
0.096
0.05 U
OOllv
0.1 U
0.012 J
0 05 U
.
0.1 U
0.1 u
0.0054 J
o:iej
0.05 U
0.05
u.-,3i )
2 U
NA
mum
Q.05U
0.U8F
0,895
0.12
0.075
0.05 U
0 00?1 .
0.1 U
0.1 u
0 05 j
& L
0.1 u
0.1 u
0.1 J
0.1 J
0.05 U
0.0071 J
Q.5 J
2 U
NA
mumB
u n7f<
0.14
0.15
0,074
0 C5 U
0 0094
0 1 U
0.1 u
•
0 L
0.1 u
0 1 u
01 I
0.05 U
0 .05 U
0,5 U
2 U
NA
JQ/16/Q7
<
U081
0.15
0,17
0.078
0:52 u
0 00-54 o
o.i y
0.1 u
• .
0.1 u
0.1 u
0-11
;
0.052 U
0.052 U
0.52 U
2.1 U
NA
10*14/08
i
! U J PC-
0.072 PG
0.11
0.047
0 04" J1
-
0 0941
0.094 U
-
0.094 U
0 047 U
0 094 U
: 094 u
0.094 U
0.094
0 094 u1
0.047 U
0. 047 U
0.47 U
4.7 U
MA
!£r>G©9
IT47J
0.13
0.12
0.047 J
0 C5 U
0 ^
0.1 u
0.1 u
0 05 U
0 ij
0.1 u
0-1 u
0.1 I
0 1
0 .05 U
0.05 U
0.1 u
5 U
NA
1£5f13i'10
I 145 J
0.14 D
0,12
0.045 J
¦ 1
0D5U
0 'OU
0.10 u
Z 1C I
0.10U
; :
0 '01
0.10 u
0.10 u
0.10 l
0 10 J
0.05 U
0.05 U
0.10 u
5.0 U
NA
3Hf AmrtSanofe
2®i2 Annual Sm&im
2013 Ann*l Smvtir
2014 Annuti Smv&na Eve-n' nc? -issvpiPf!
!S« Annual Smwlw
10(04.116
0.049 U
J 34
0.033 J
0 C49 J
0 049
0.049 U
0 0491
0.049 U
pra-s
0 049 J
0 04^ U
: 049 u
0.D49U
0.049
0 049 J
C 049L
0 049 J
0.04S -O
4.9 U
NA
miDsin
0.049 U
D14
3.049 U
u 04? J
0 049 U
0.049 U
0 049 U
0.049 U
0.04d v
-
0 049 U
2 049 IJ
0.049 U
0.049
0 04- J
2 049 U
0 049 U
0 049 w
4 9 U
NA
tU2XW
0.049 U'
i a-t
0.057
oo: k
G049L
0.049 U*
0 049 L
0.049 u
"V- > i
0 H4i v
0 045 J
0 049 U
: 049 y
0.049 U
0.049 _
0 043 „
: Ci; I"
0 049 J
0 049
4.9 U
NA
wnms
0 054 U
lDr4
0.027 J
0 054 .J
0 054 U
I 0 4
0 054 U
0 054 L
0.054 U
0 L|C4
--
0 054 I'
: 054 u
0 054 U
0.054
0 054 J
L -t- .
0 054 J
0 054 J
5.4 U
NA
10/21/20
0.050 U
0.050 U
0.050 U
0 C5G J
0 050 U
0 0 50 U
0 050 U
0 050 U
0.050 U
0 050 »
0 050 »J
0 050 Li
0.050 U
0 .050 U
3 050 J
: 050 L
0 050 U
: -
0.20 U
NA
11/02/21
0.050 U'-
0.045 J
0 050 _>
D 050 U
0.050 U
0.0^) U
0 050 U
0 050 U*-
0 050 J'-
. .= .
0 050 U
0 050 U*-
0.050 U
0.050 U
-
o :m i1 -
5-0 U
NA
0.050 U
0.057
0 C50
. .
0.050 U
0.050 U
0 050 U
0.050 U
0 050 J
.
0 050 U
Q.050 U
0.050 U
0 050
: =
C 250 L
0 050 L
. -
0.50 U
NA
0.5 U
6.5
1.6
1.1
0.5 U
0.5 U
0.66 J
10 u
1.0 U
1.0U
0 iJ
1.0U
1.0 U
10 U
1.1
0.5 U
0.08 J
5.0 U
10 U
6.2
0.05 U
0.59
0.43
0,64
0.56
0.05 U
0.05 U
0 021 J
0 1 u
0.1 U
0.1 u
0 05 IJ
-
0.1 u
0.1 U
0.1 u
0-024 w
Q 05 U
0.0081 J
0.5 U
1.0
NA
07/23.98
0.05 U
0.43
0.33
0,56
0,41
0.05 U
0 1 i.
0.1 u
0.1 U
0 1 u
0 05 U
. -
0.1 u
0.11i
0 1 I
0 05 U
0 05 U
0.5 U
1 u
NA
10/27,-98
0.26 U
0.49
0.4
0.63
0.46
0.26 U
05 U
0 51 U
0.51 U
051 U
0.51 U
0.51 U
0.51 1
0.26 U
0.26 U
26 U
5.1 U
4.2
01/13/99
025 Q.U
0.75
0.57
0,93
0.71
0.25 U
0 5 U
0.5 U
0.5 U
0 25 U
05 L
05 U
0.5 U
0..51
0.25 U
0.25 U
2.5 U
10 u
NA
04(13/99
0.2 U
0.59 O
0.45
0.75
0.55
0.2 U
0 4 L'
04 U
0.4 U
0 4 I
0.4 U
0-4 U
0.41
04 U
0.2 U
0.2 U
2 U
8 U
4.2
081399
0.05 U
0.38
0.33
0.53
0.34
0.05 U
.
0.013 J
o.i y
.
0.1 u
0.1 V
0.1 I
0 05 U
0.05 U
0.5 U
2 U
NA
10/14/99
0.05 U
0,41
0.35
0.61
0.35
0.05 U
0 1 u
0.1 u
-
0 L
0.1 u
0.1 u
0.1 I
0.05 U
0 .05 U
0.5 U
2 U
NA
0.05 U
0.43
0.42
0.66
0.37
0.05 U
.
0 1 u
0 1 u
0 05 U
' .
0.1 u
0 1 u
0 1 I
0 05 U
0.05 U
0.5 U
2 U
NA
04/12(00
0.05 U
0,39
0.39
0.56
0.31
0.05 U
.
0 1 u
0.1 u
0 05 U
0 L
0 1 u
0-1 u
0.1 I
-
0.05 U
0 05 U
0.5 U
2 U
NA
07S1ID0
0,056 V
0.35
0.36
0.5?
0.29
0.056 U
.
0.11 u
0.11 u
- =¦
0.11 u
0.11 u
0 11 1
D.056 U
0. 056 U
0.56 U
2..2 U
NA
10/1W0D
0.05 U
0.43
0.45
0.69
0.35
• :
0.05 U
0 0?5 v
0 1 u
0.1 u
0 05 U
0 U
0 1 u
0 1 u
0.1 i
0 05 U
0 05 U
0.5 U
2 U
NA
01/10/01
0.1 Lt
ti.48 O
0.61 Q
0.85 G
0.43 Q
0.1 U
02L
0.2 U
0.2 U
-
C 2 L'
0.2 U
0 2 U
0.2 L
0 2 U
0.1 U
0.1 U
1 U
4 U
NA
10/0901
0.05 U
0,44
0.61
o.rs
0.37
0.05 U
0 " L
0 1 u
0.1 u
0 05 U
0 "J
0 1 u
0.1 u
0.1 I
0 1 J
0.05 U
0.05 U
0.5 U
2 U
NA
04109,-02
0.1 G
0.36
0,65
0.72
0,32
0.1 G
0 G5y J
0 1 u
0.2 G
. .f
ft.2 &
0 1 u
0.1 u
0.2 C
0 1 U
0.05 U
0.1 G
0.5 U
2 U
NA
10/23/02
0.05 U
0.26
0.5
0.5
0.21
0.05 U
.
0 1 u
0.1 u
" .
0 1 u
0.1 u
0-1 I
o &:» j
0 05 U
0.05 U
0.5 U
2 U
NA
10/07/03
0.1 U
0.43
0.89
0.96
0.4
0.1 u
0 044.
0 2 U
0.2 U
. .
02 U
0.2 U
0.2 U
0.2 L
0 1 U
0 1 U
1 u
4 U
NA
1022104
0.25 U
0,16 J
0.35
0.32
0.16 J
.
0.25 U
05 U
0.5 U
0 25 1.1
: .
0.5 U
0-5 U
0.5 L
0.25 U
0 25 U
0.11 J
10U
NA
10/11/05
0.05 U
0.066
0.12
6.13
0.065
0.05 U
GOO** ,
D.1 U
0.1 U
0 05 U
0 u
0 1 u
0 1 u
0.1 i
0 05 U
0 05 U
0.5 U
2 U
NA
0.05 U
0.045 J
0.091
0.082
0 04 ! J
0.05 U
: DC-65 j pl-
0 1 U
U.I u
0 1 U
0 'j
0 1 u
0 1 u
0..1 u
0.1 u
0 05 U
0.049 J.PG
0,5 U
2 U
NA
Page 9 of 22 February 2023
-------
TABLE 4: HISTORICAL SUMMARY OF GROUNDWATER SAMPLE RESULTS
PARAMETER
s
¦X*.
:&
i
E
- -
"
: 1
s
_
¦s"
1
*r
i
|
f
Endnn
--
f»
IZ
u
S
i
-
7
i
i
PEFF.-CMflf *F
STANDARD
0 05
::?
0 2
n~
I.E
0 t
IE
ME
m
',5
*.E
'JE
fuc
0.1
NE
•li
f JE
U;
"G"6«Q7
cm&l,
0."1
0.0M
0 01 ¦, J
0 ii? U
oo&eu
G Krf „•
ow&u
:0H6L
2 09& y
0 096 J
GO** J
0 046L
1 &L
: , .
.; • .
0 052 J PG
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Page TO of 22
Fet-aiary 2023
-------
TABLE 4 HISTORICAL SUMMARY ">F GPOLWWVTEP SAMPLE RESULTS
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PARAMETER
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TABLE 4: HISTORICAL SUMMARY ?F GROUNDWATER SAMPLE RESULTS
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Page 14 of 22
February 2023
-------
TABLE 4; HISTORICAL SUMMARY OF GROUNDWATER SAMPLE RESULTS
PARAMETER
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©2023 EnvtrcTrac
Page 15 of 22
February 2023
-------
TABLE 4-, HISTORICAL SUMMARY OF GROUNDWATER SAMPLE RESULTS
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Page 16 of 22
February 2023
-------
TABLE 4: HISTORICAL SUMMARY OF GROUNDWATER SAMPLE RESULTS
PARAMETER
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II
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U.U3U
-------
TABLE 4; HISTORICAL SUMMARY OF GROUNDWATER SAMPLE RESULTS
PARAMETER
i
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1
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Page 18 of 22
F'efoftsary 2023
-------
TABLE 4 HISTQRfCAl SUMMARY OF GROUNDWATER SAMPLE RESULTS
PARAMETER
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Page 19 of 22 February 2023
-------
TABLE 4; HISTORICAL SUMMARY r>F GROUNDWATER SAMPLE RESULTS
PARAMETER
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Page 20 of 22
February 2023
-------
TABLE 4', HISTORICAL SUMMARY OF GROUNDWATER SAMPLE RESULTS
PARAMETER
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TAELE 4- HISTORICAL SUMMARY OF GROUNDWATER SAMPLE RESULTS
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MOTES;
F- st'd^-pr h tf»1 n 'in-! cr rer I='^o-^.lU'rel t:s-his ::n-p-junu
i - E "nvitr 'i?-1®'1© rari t - ir- <. tn i ini t hit ir •• i*r t1-* n »i of i h> t! r i r ii Bol-I = Loru*r>f:ii:n e«;?ecs oe-fon 3-c? standard or method detection limits if no standard ss
= ' - - - - - - eaiaaisiiea
p a~i t- c pcc ! "tvi—r t? eprt i i uiJ^^rrah i >j iJ^tcvir 4n Tf>- i v,+ *J I-" u"-1 »»"i p^irt^ H5 = ''ot s^rrp'ed
- = c-
C = st jtmrn t- c 1*1- "v >. h-* *-r~ n- t ,? m I i-t. i e H >- i-vtn 4 a 1 d ireif- on -1,. <• o i. i " unds analyzed at a dilution may be flagged with a D
PG = The percent difference between the original and confirmation analysis is greater than 40 %
i =F=p Mruln p r ! >* 1"! h m n" S1~T^rr(| npjH
L =- a- '•» .* rtHa •> aro i-ttr vm1 L ikvP . -n ff ** t f "ic nti;1e u. .i3ted samptes may be biased high.
P =Mitn l>« ei ~(\ >- fv ? i "i tr 3lt h rop^i L i «" r L t r-c -O
NE= v -*v \,i j - tab ' *»•<
R = Reporting limrt(s) raised due to sample volume limitations
= El* -it^d r- c* ni, 111
= Pe'""-; in ti d
-------
ATTACHMENT 2
MONITORING LOCATIONS AMD DETECTED CONSJTTUBIFS
OCTOBER2022 MONITORING EVENT
G-29
-------
9
U>
o
iCALf |N FFFT
EnvTrolrac
Environmental Services
7343 W FRIEfeDlV AVENUE, SUIT f I
GRFFNSRQRO. NGflTM CAROIIKA
FIGURF 1
EXTRACTION AND TREATMENT SYSTEM 5ITE LAYOUT
Geigy Chemical Corporation
Aberdeer, North Carolina
DATE: li/04/2015
DRAWN BY AB
APPROVED fiV:
CWH
SCALE: AS SHOWN
PROJECT NO H.99DG1D.CO
LEGEND
MW 3S-* EX15TINC MONITORING WEIL
W-1S 4- IXISING extraction weu.
WP-1S ~ EXISTING WELL POINT PIEZOMETER
• — - - FENCE
EXTRACTION WEU. FORCE MAIN
VOTES:
10PC MAP* VO *« WOOU-EUT CONS-.. . ANTS l«ED
AL31AL 'HO'OCWMV FLOWN MARCH it.. 19J0WITH
GROUND CGNTB.O;. T rU TO THE STATF PiA\5
COORPVATt SYSTEM
PlM METRIC FEATURES WEBE FIEUJ IDENTIFIES ON MAY
IS. 1089 BY WOOLPeRT CONSULTANTS
ORIGINAL DRAWING ADDUCED BV RUSH ENVIRONMENT
A>vD INFRUSFSiKTlliRt
LOCATION OF ACCESS ROAD SHOWN ON HIS OPAWiWC IS
APPROXIMATE.
-------
9
-------
[MW-39L
NOANALYTtSOl
L cWEfc*
PZ-2
alpha-BHC
beta-BHC
delta-BHC
gamma-BHC
PZ-3
alpha-BHC 0.12
beta-BHC 0.086
delta-BHC 0.099
gamma-BHC 0.10
\MW 321
NO ANA1YTE3 DETECTED
IMW-36L
|\o a\a ••II s i : n :
MW-B7L
alpha-BHC 0.S5
beta-BHC 0.91
delta-BHC 1.4
gamma BHC 0.12
Endnn ketone 0.050
Aa W-3AL
NO ANAU^LS DETECTED
• MW-77L
-alpha-BHC 0.60
beta-BHC 1.7
delta-BHC 1.1
gamsna-BHC 015
D
-------
9
u>
APPROXIMATE SCALE
SW-04# SURFACE WATER 10CAT1CN
».7 lAMSAICBVatSUSlS |ug/L)
ISOLD EXCEEDS DETECTION UMTT|
- - STREAM
RS TOTAL SUSPENDED SOL D5 infci'L)
N0TE5:
SAMPS ES COUECTFD IN OCTOBER M?2
3ACK6SC.JND MAC FROW MOORt CCSJNTVGS
Ermrolrac
Environmental Services
7M1 W F3IFNW.V AVENUE, SUITE i
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ATTACHMENT3
ANALYTICAL LABORATORY REPORTS
OCTOBER 2022 MONITORMG EVEMT
The remainder of the 2022 Annual Downgradient Area Monitoring Report (February 2023)
is not included in the FYR due to the size of the data.
A full copy of this report is available through the US EPA.
G-34
-------
APPENDIX H
SITE INSPECTION CHECKLIST
FIVE-YEAR REVIEW SITE INSPECTION CHECKLIST
I. SITE INFORMATION
Site Name: Geigy Chemical Corp (Aberdeen Plant) Date of Inspection: FebmaiYjJ^2023
Location and Region: Aberdeen, NC / Region 4
EPA ID: NCD981927502
Agency, Office or Company Leading the Five-Year
Review: EPA
Weather/Temperature: sunny, 72 F
Remedy Includes: (Check all that apply)
~ Landfill cover/containment
Access controls
Institutional controls
Groundwater pump and treatment
~ Surface water collection and treatment
Q Other:
Monitored natural attenuation
~ Groundwater containment
~ Vertical barrier walls
Attachments: £3 Inspection team roster attached
~ Site map attached
II. INTERVIEWS (check all that apply)
1. O&M Site Manager Dane Grimshaw
Name
Interviewed ~ at site ~ at office ~ by phone
Problems, suggestions ~ Report attached:
Olin Corp
Title
Phone:
Date
2. O&M Staff
Christopher Hav
Name
PRP Contractor. EnviroTrac
Title
Date
Interviewed at site ~ at office ~ by phone Phone:
Problems/suggestions ~ Report attached:
3. Local Regulatory Authorities and Response Agencies (i.e., state and tribal offices, emergency
response office, police department, office of public health or environmental health, zoning office,
recorder of deeds, or other city and county offices). Fill in all that apply.
Agency NCDEO
Contact Doug Rumford
Name
Problems/suggestions ~ Report attached:.
State Manager
Title
Date
Phone No.
Agency
Contact
Name Title
Problems/suggestions ~ Report attached:
Date
Phone No.
Agency
Contact
Name Title
Problems/suggestions ~ Report attached:
Date
Phone No.
4.
Other Interviews (optional) Q Report attached:.
Johhn Nolen EPA RPM
H-1
-------
III. ON-SITE DOCUMENTS AND RECORDS VERIFIED (check all that apply)
1.
O&M Documents
~ O&M manual ~ Readily available
~ As-built drawings ~ Readily available
E3 Maintenance logs Readily available
Remarks:
~ Up to date
~ Up to date
E3 Up to date
Hn/a
Kl n/a
~ N/A
2.
Site-Specific Health and Safety Plan
~ Contingency plan/emergency response plan
Remarks:
E3 Readily available
~ Readily available
O Up to date
~ Up to date
~ n/a
0N/A
3.
O&M and OS HA Training Records
Remarks:
E3 Readily available
~ Up to date
~ n/a
4.
Permits and Service Agreements
~ Air discharge permit
~ Effluent discharge
~ Waste disposal, POTW
n Other Dcrmits:
Remarks:
~ Readily available
~ Readily available
~ Readily available
~ Readily available
~ Up to date
~ Up to date
~ Up to date
~ Up to date
0N/A
Hn/a
|n/a
[3 n/a
5.
Gas Generation Records
Remarks:
~ Readily available
~ Up to date
Hn/a
6.
Settlement Monument Records
Remarks:
~ Readily available
~ Up to date
0N/A
7.
Groundwater Monitoring Records
Remarks:
E3 Readily available
~ Up to date
~ n/a
8.
Leachate Extraction Records
Remarks:
~ Readily available
O Up to date
0N/A
9.
Discharge Compliance Records
~ Air ~ Readily available
E3 Water (effluent) £3 Readily available
Remarks:
~ Up to date
~ Up to date
Hn/a
~ N/A
10.
Daily Access/Security Logs
Remarks:
~ Readily available
~ Up to date
Hn/a
IV. O&M COSTS
1.
O&M Organization
l~l State in-house O Contractor for state
l~l PRP in-house £3 Contractor for PRP
H-2
-------
I~l Federal facility in-house
~
O Contractor for Federal facility
2
O&M Cost Records
153 Readily available Up to date
l~l Funding mechanism/agreement in place O Unavailable
Original O&M cost estimate: Unknown K1 Breakdown attached (in FYR report)
Total annual cost by year for review period if available
From: To: PI Breakdown attached
Date Date Total cost
From: To:
Date Date
Total cost
O Breakdown attached
From: To:
Date Date
Total cost
~ Breakdown attached
From: To:
Date Date
Total cost
~ Breakdown attached
From: To:
Date Date
Total cost
~ Breakdown attached
3.
Unanticipated or Unusually High O&M Costs during Review Period
Describe costs and reasons:
V. ACCESS AND INSTITUTIONAL CONTROLS [X] Applicable ~ N/A
A. Fencing
1.
Fencing Damaged ~ Location shown on site map ^ Gates secured ~ N/A
Remarks:
B.
Other Access Restrictions
1.
Signs and Other Security Measures
Remarks:
~ Location shown on site map ^ N/A
C.
Institutional Controls (ICs)
H-3
-------
Date
Phone no.
IE! Yes
~
No
~n/a
^ Yes
~
No
~ n/a
l~l Yes
~
No
|n/a
l~l Yes
No
~ n/a
1. Implementation and Enforcement
Site conditions imply ICs not properly implemented ~ Yes El No ~ N/A
Site conditions imply ICs not being fully enforced I I Yes IS! No ~ N/A
Type of monitoring (e.g., self-reporting, drive by): Drive by
Frequency: Monthly
Responsible party/agency: PRP Contractor
Contact
Name Title
Reporting is up to date
Reports arc verified by the lead agency
Specific requirements in deed or decision documents have been met
Violations have been reported
Other problems or suggestions: ~ Report attached
2. Adequacy ^ ICs arc adequate ~ ICs arc inadequate ~ N/A
Remarks:
D. General
1. Vandalism/Trespassing ~ Location shown on site map El No vandalism evident
Remarks:
2. Land Use Changes On Site ^ N/A
Remarks:
3. Land Use Changes Off Site ~ N/A
Remarks: Nearby commercial and residential developments
VI. GENERAL SITE CONDITIONS
A. Roads £3 Applicable ~ N/A
1. Roads Damaged ~ Location shown on site map Roads adequate ~ N/A
Remarks:
B. Other Site Conditions
Remarks:
VII. LANDFILL COVERS ~ Applicable Kl N/A
A. Landfill Surface
1. Settlement (low spots) ~ Location shown on site map ~ Settlement not evident
Area extent: Depth:
Remarks:
2. Cracks ~ Location shown on site map O Cracking not evident
Lengths: Widths: Depths:
Remarks:
H-4
-------
3.
Erosion
Area extent:
Remarks:
l~l Location shown on site map
O Erosion not evident
Depth:
4.
Holes
Area extent:
Remarks:
~ Location shown on site map
~ Holes not evident
Depth:
5.
Vegetative Cover
l~l Grass
Q Cover properly established
l~l No signs of stress
l~l Trees/shrubs (indicate si/c and locations on a diagram)
Remarks:
6.
Alternative Cover (e.g
Remarks:
r., armored rock, concrete)
~ N/A
7.
Bulges
Area extent:
Remarks:
~ Location shown on site map
~ Bulges not evident
Height:
8.
Wet Areas/Water Damage Q Wet areas/water damage not evident
l~l Wet areas
O Location shown on site map
Area extent:
l~l Ponding
O Location shown on site map
Area extent:
l~l Seeps
O Location shown on site map
Area extent:
l~l Soft subgrade
O Location shown on site map
Area extent:
Remarks:
9.
Slope Instability
O Slides
~ Location shown on site map
~ No evidence of slope instability
Area extent:
Remarks:
B.
Benches ~ Applicable £3 N/A
(Horizontally constructed mounds of earth placed across a steep landfill side slope to interrupt the slope in
order to slow down the velocity of surface runoff and intercept and convey the runoff to a lined channel.)
1.
Flows Bypass Bench
Remarks:
~ Location shown on site map
~ N/A or okay
2.
Bench Breached
Remarks:
l~l Location shown on site map
l~l N/A or okay
3.
Bench Overtopped
Remarks:
l~l Location shown on site map
l~l N/A or okay
C.
Letdown Channels
~ Applicable £3 N/A
(Channel lined with erosion control mats, riprap, grout bags or gabions that descend down the steep side
slope of the cover and will allow the runoff water collected by the benches to move off of the landfill
H-5
-------
cover without creating erosion gullies.)
1.
Settlement (Low spots) ~ Location shown on site map
Area extent:
Remarks:
~ No evidence of settlement
Depth:
2.
Material Degradation ~ Location shown on site map
Material tvoe:
Remarks:
~ No evidence of degradation
Area extent:
3.
Erosion ~ Location shown on site map
Area extent:
Remarks:
~ No evidence of erosion
Depth:
4.
Undercutting ~ Location shown on site map
Area extent:
Remarks:
~ No evidence of undercutting
Depth:
5.
Obstructions Tvdc:
n Location shown on site man Area extent:
Si/c:
Remarks:
~ No obstructions
6.
Excessive Vegetative Growth Tvdc:
~ No evidence of excessive growth
~ Vegetation in channels does not obstruct flow
n Location shown on site man Area extent:
Remarks:
D.
Cover Penetrations ~ Applicable ^ N/A
1.
Gas Vents O Active ~ Passive
l~l Properly secured/locked Q Functioning O Routinely sampled O Good condition
l~l Evidence of leakage at penetration O Needs maintenance O N/A
Remarks:
2.
Gas Monitoring Probes
l~l Properly secured/locked Q Functioning O Routinely sampled O Good condition
l~l Evidence of leakage at penetration O Needs inaintenance O N/A
Remarks:
3.
Monitoring Wells (within surface area of landfill)
l~l Properly secured/locked ~ Functioning O Routinely sampled Q Good condition
l~l Evidence of leakage at penetration O Needs inaintenance O N/A
Remarks:
4.
Extraction Wells Leachate
H-6
-------
l~l Properly sccurcd/lockcd Q Functioning ~ Routinely sampled O Good condition
l~l Evidence of leakage at penetration O Needs maintenance O N/A
Remarks:
5
Settlement Monuments Q Located O Routinely surveyed Q N/A
Remarks:
E.
Gas Collection and Treatment ~ Applicable ^ N/A
1
Gas Treatment Facilities
l~l Flaring O Thermal destruction O Collection for reuse
l~l Good condition ~ Needs inaintenance
Remarks:
2
Gas Collection Wells, Manifolds and Piping
l~l Good condition ~ Needs inaintenance
Remarks:
3
Gas Monitoring Facilities (e.g., gas monitoring of adjacent homes or buildings)
l~l Good condition O Needs inaintenance O N/A
Remarks:
F.
Cover Drainage Layer ~ Applicable ~ N/A
1
Outlet Pipes Inspected Q Functioning ~ N/A
Remarks:
2
Outlet Rock Inspected Q Functioning O N/A
Remarks:
G.
Detention/Sedimentation Ponds ~ Applicable ~ N/A
1.
Siltation Area extent: Depth: [~~l N/A
l~l Siltation not evident
Remarks:
2.
Erosion Area extent: Depth:
l~l Erosion not evident
Remarks:
3.
Outlet Works Q Functioning O N/A
Remarks:
4.
Dam Functioning O N/A
Remarks:
EL Retaining Walls ~ Applicable £3 N/A
1
Deformations O Location shown on site map Q Deformation not evident
Horizontal displacement: Vertical displacement:
Rotational displacement:
H-7
-------
Remarks:
2.
Degradation ~ Location shown on site map ~ Degradation not evident
Remarks:
I. Perimeter Ditches/Off-Site Discharge ~ Applicable [3 N/A
1.
Siltation O Location shown on site map Q Siltation not evident
Area extent: Depth:
Remarks:
2.
Vegetative Growth O Location shown on site map Q N/A
l~l Vegetation docs not impede flow
Area extent: Tvpe:
Remarks:
3.
Erosion O Location shown on site map Q Erosion not evident
Area extent: Depth:
Remarks:
4.
Discharge Structure O Functioning ~ N/A
Remarks:
VIII. VERTICAL BARRIER WALLS ~ Applicable ^ N/A
1.
Settlement O Location shown on site map Q Settlement not evident
Area extent: Depth:
Remarks:
2.
Performance Monitoring Tvpe of monitoring:
l~l Performance not monitored
Freciuencv: I I Evidence of breaching
Head differential:
Remarks:
IX.
GROUNDWATER/SURFACE WATER REMEDIES ^ Applicable ~ N/A
A. Groundwater Extraction Wells, Pumps and Pipelines £3 Applicable ~ N/A
1.
Pumps, Wellhead Plumbing and Electrical
E3 Good condition All required wells properly operating O Needs maintenance Q N/A
Remarks:
2.
Extraction System Pipelines, Valves, Valve Boxes and Other Appurtenances
Good condition Q Needs maintenance
Remarks:
3.
Spare Parts and Equipment
Kl Readily available ~ Good condition O Requires upgrade O Needs to be provided
Remarks:
H-8
-------
B. Surface Water Collection Structures, Pumps and Pipelines ~ Applicable ^ N/A
1.
Collection Structures, Pumps and Electrical
l~l Good condition Q Needs maintenance
Remarks:
2.
Surface Water Collection System Pipelines, Valves, Valve Boxes and Other Appurtenances
l~l Good condition ~ Needs maintenance
Remarks:
3.
Spare Parts and Equipment
l~l Readily available O Good condition ~ Requires upgrade O Needs to be provided
C.
Treatnient System ^ Applicable ~ N/A
1.
Treatnient Train (check components that apply)
l~l Metals removal Q Oil/water separation Q Bioremediation
~ Air stripping [3 Carbon adsorbers
n Filters:
n Additive (e.g.. chelation agent, flocculent):
n Others:
Efl Good condition ~ Needs maintenance
E3 Sampling ports properly marked and functional
l~l Sampling/maintenance log displayed and up to date
Equipment properly identified
n Ouantitv of groundwater treated annuallv:
n Ouantitv of surface water treated annually:
Remarks:
2.
Electrical Enclosures and Panels (properly rated and functional)
l~l N/A ^ Good condition O Needs maintenance
Remarks:
3.
Tanks, Vaults, Storage Vessels
l~l N/A ^ Good condition O Proper secondary containment O Needs maintenance
Remarks:
4.
Discharge Structure and Appurtenances
E3 N/A O Good condition O Needs maintenance
Remarks:
5.
Treatnient Building)*)
l~l N/A Good condition (esp. roof and doorways) O Needs repair
E3 Chemicals and equipment properly stored
Remarks:
H-9
-------
6. Monitoring Wells (pump and treatment remedy)
E3 Properly sccurcd/lockcd [3 Functioning Routinely sampled
All required wells located Q Needs maintenance
Remarks:
D. Monitoring Data
1. Monitoring Data
E3 Is routinely submitted on time ~ Is of acceptable quality
2. Monitoring Data Suggests:
~ Groundwater plume is effectively contained ~ Contaminant concentrations arc declining
E. Monitored Natural Attenuation
1. Monitoring Wells (natural attenuation remedy)
IXI Properly sccurcd/lockcd ~ Functioning ~ Routinely sampled
l~l All required wells located Q Needs maintenance
Remarks:
X. OTHER REMEDIES
If there are remedies applied at the site and not covered above, attach an inspection sheet describing the physical
nature and condition of any facility associated with the remedy. An example would be soil vapor extraction.
XI. OVERALL OBSERVATIONS
A. Implementation of the Remedy
Describe issues and observations relating to whether the remedy is effective and functioning as designed.
Begin with a brief statement of what the remedy is designed to accomplish (e.g., to contain contaminant
plume, minimize infiltration and gas emissions).
The selected site remedy included soil excavation and off-site disposal of contaminated soil;
installation/construction of groundwater extraction, treatment, and discharge system. While most remedial
components arc functioning as designed, this Five-Year Report has identified some issues. The most noteworthy
being the persistent area of oil-Site, intermediate groundwater contamination of the Lower Black Creek Aquifer
with Site COCs. at a distance of approximately 1.3 miles west and downgradicnt of the Site. See the main body
of the Five-Year Report for additional information.
B. Adequacy of O&M
Describe issues and observations related to the implementation and scope of O&M procedures. In
particular, discuss their relationship to the current and long-term protcctivcncss of the remedy.
The Site O&M activities arc adequate and implemented in accordance with the RA Plan. The Site is well
maintained, and monitoring is performed as scheduled.
C. Early Indicators of Potential Remedy Problems
Describe issues and observations such as unexpected changes in the cost or scope of O&M or a high
frequency of unscheduled repairs that suggest that the protcctivcncss of the remedy may be compromised
in the future.
None
D. Opportunities for Optimization
Describe possible opportunities for optimization in monitoring tasks or the operation of the remedy.
No opportunities for O&M optimization were identified during the Five-Year Review Site Inspection.
[x] Good condition
~ N/A
~ Good condition
~ N/A
FYR Site Inspection Participant List:
John Nolen, USEPA
Bennie Underwood, de maximis, inc.
Jerry Wylie, SynTerra
Dane Grimshaw, 01 in Corp.
Doug Rum ford, NCDEQ
Cydney Kirby, de maximis, inc.
Christopher Hay, Envirotrac
Bill Odle, NewFields
H-10
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