NCD981927502_19920301_Geigy Chemical Corporation_FRBCERCLA RI_Final Remedial Investigation Study Book 1 of 2-OCR

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FINAL REPORT
REMEDIAL INVESTIGATION STUDY
Geigy Chemical corporation Site
Aberdeen, North Carolina
Book 1 of 2
Prepared for:
The Potentially Responsible Parties
for the
Geigy Chemical Corporation Site
Prepared by:
ERM-Southeast, Inc.
7300 Carmel Executive Park
Charlotte, NC 28226
March 1992
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REMEDIAL INVESTIGATION
PINAL REPORT
Geigy Chemical corporation site
Aberdeen, North Carolina
SECTION
EXECUTIVE SUMMARY
1.0 INTRODUCTION
Table of contents
1.1 Purpose of the Remedial Investigation
1.1.1 Characterization of the Site
1.1.2 Data Collection
1.2 Site Background
1.2.1 site History/Waste Characterization
1.2.2 Site Description
1.2.3 Previous Investigations
1.3 Report Organization
2.0 AREA FEATURES
2.1 Geographic Setting and Topography
2.2 Land Use and Economy
2.3 Regional Geology
2.3.1 Geology
2.3.2 Soils
2.4 Regional Hydrogeology
2.4.1 Ground Water
2.4.2 Well Inventory
2.4.3 Surface Water
2.4.3.1 Occurrence and Flow
2.4.3.2 Surface Water Usage
2.5 Demographics
2.6 Climate/ Air Quality
2.6.1 Climate
2.6.2 Air Quality
2.7 Ecological Habitats
2.7.1 Ecological Habitats
2.7.2 Environmentally Sensitive Areas and
Rare/Endangered Species
3.0 SITE HYDROGEOLOGIC INVESTIGATION
3.1 General Site stratigraphy
3.2 site Hydrogeologic Units
3.2.1 Uppermost Aquifer
3.2.2 Second Uppermost Aquifer
3.2.3 Third Uppermost Aquifer
3.3 Monitor Well Installation
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REMEDIAL INVESTIGATION
FINAL REPORT
Geigy Chemical corporation Site
Aberdeen, North Carolina
Table of Contents
(continued)
SECTION
4.0
5.0
3.3.1 Drilling Methods
3.3.2 Well Construction
3.3.3 Well Development
3.3.4 Abandonment of Hollow Stem Augers
3.4 Physical Laboratory Tests
3.4.1 Grain Size Analysis
3.4.2 Permeability Tests
3.5 Aquifer Tests
3.6 Ground Water Sampling and Analysis
3.6.1 Sampling Procedures
3.6.1.1 Monitor Wells and On-Site Monitor
Supply Well
3.6.1.2 Sampling of Off-Site Wells
3.6.2 Phase 2, Step 1 Analytical Results
3.6.2.1 Field Parameters
3.6.2.2 TCL Volatiles
3.6.2.3 TCL Semi-Volatiles
3.6.2.4 Pesticides
3.6.2.5 TAL Metals
3.6.3 Phase 4, Step 2 Analytical Results
3.6.3.1 Field Parameters
3.6.3.2 TCL Volatiles
3.6.3.3 TCL Pesticides
SOIL INVESTIGATIONS
4.1 General
4.2 Soil Description
4.3 Initial Removal (Feb. and Oct. 1989)
4.4 Soil Sampling
4.4.1 Phase 1 Soil sampling and Analysis
4.4.2 Phase 2 Soil Sampling and Analysis
4.4.3 Phase 3 Soil Sampling and Analysis
4.4.4 Phase 4 Samples -Additional Information
4.4.4.1 Off-Site Soil Boring
4.4.4.2 Semi-Volatile Samples
4.4.4.3 Horizontal Delineation of Contamination
4.5 March-April 1991 Removal
DITCH SEDIMENT INVESTIGATION
5.1 General
5.2 Ditch Sediment Description
5.3 Ditch Sediment Sampling
5.3.1 Phase 2 Ditch Sediment Samples
5.3.2 Phase 3 Ditch Sediment Samples
5.3.3 Phase 4 Ditch Sediment Samples
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SECTION
REMEDIAL INVESTIGATION
FINAL REPORT
Geigy Chemical Corporation Site
Aberdeen, North Carolina
Table of Contents
(continued)
6.0 NATURE AND EXTENT OF CONTAMINATION
6.1 Ground Water
6.1.1 Pesticides
6.1.2 TCL Volatiles
6.1.3 TCL Semi-Volatiles
6.1.4 TAL Metals
6.1.5 Field Parameters
6.2 Soils
6.3 Ditch Sediment Samples
6. 4 Air
7.0 CONTAMINANT FATE AND TRANSPORT
7.1 Summary of Site Conditions
7.2 Potential Routes of Migration
7.2.1 Air Migration
7.2.1.1 Volatilization
7.2.1.2 Fugitive Dust
7.2.2 Soil Migration
7.2.2.1 Migration of Surface Soil
7.2.2.2 Migration through Vadose Zone Soil
7.2.3 Ground Water Migration
7.2.3.1 Migration to Ground Water
7.2.3.2 Migration in Ground Water
7.3 Environmental Transformations
7.3.1 Biological
7.3.2 Chemical
7.3.2.1 Photolysis
7.3.2.2 Hydrolysis
7.4 Summary of Contaminant Fate
8.0 SUMMARY AND CONCLUSIONS
REFERENCES
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REMEDIAL INVESTIGATION
FINAL REPORT
Geigy Chemical corporation Site
Aberdeen, North Carolina
LIST OF FIGURES
Site Location Map
Site Plan
Location of City of Aberdeen Municipal Supply
Wells, USGS Cluster Well and Private Wells in
the Vicinity of the Site
USGS Topographic Maps
Generalized Geologic Map of Moore County
Soil survey of Area Near the Geigy Chemical
Corporation Site
Generalized Hydrogeologic Section
Location of Sand Hills Nature Preserve
Monitor Well Locations
Location of Hydrogeologic Profiles A-A' and B-B'
Hydrogeologic Cross Section A-A'
Hydrogeologic Cross Section B-B'
Ground Water Elevation Map -Uppermost
Aquifer
Elevation of Uppermost Confining Layer
Ground Water Elevation Map -Second
Uppermost Aquifer
Inferred Outcrop Area of Site -Second
Uppermost Aquifer
Phase 2, Step 1 Ground Water Investigation -
November 1990; Field Parameters
Phase 2, Step 1 Ground Water Investigation -
November 1990; Volatile and Semi-Volatile
Parameters
Phase 2, Step 1 Ground Water Investigation -
November 1990; Pesticides
Phase 4, Step 2 Ground Water Investigation -
July 1991; Field Parameters
Phase 4, step 2 Ground Water Investigation -
July 1991; Volatiles and Pesticides
Areas Designated for Removal -February and
October 1989
Phase 1 Soil Samples; Pesticide Analyses;
May 1990
Phase 2 Soil Sample Locations
Phase 2 Surface Soils, Pesticide Concentrations
Phase 4 Soil Sample Locations
Soil Excavation Areas (March-April 1991)
Ditch Sediment Sample Locations
Phase 2 Ditch Sediment Sample Results
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REMEDIAL INVESTIGATION
FINAL REPORT
Geigy Chemical corporation site
Aberdeen, North Carolina
LIST OF TABLES
Detected Pesticide Constituents -Private
Well Ground Water Samples
Generalized Stratigraphic Units
Principal Soils Characteristics, Moore County
North Carolina Coastal Plain Geologic and
Hydrogeologic Units
Population by Age and Sex within a 1-mile Radius
of the Site (1990 Census)
1980 Census of Population and Housing in
Aberdeen and Moore county
Temperature and Precipitation
1989 Air Quality Data
Major Habitats and Associated Wildlife Found
in Moore County
Relationship of the site Hydrogeologic Units
with Regional Hydrogeologic and Geologic
Framework of the North Carolina Coastal Plain
Ground Water Elevation Data
Monitor Well Construction Details
Summary of Well Development
Site Aquifer Designation, Classification and
Percent Fine Material of Selected Soil
Samples for Grain Size Analysis
summary of Slug Test Results
Phase 2 Step 1 Ground Water Investigation -
Field Parameters
Phase 2 Step 1 Ground Water Investigation -
TCL Volatiles
Phase 2 Step 1 Ground Water Investigation -
TCL Semi-Volatiles
Phase 2 Step 1 Ground Water Investigation -
TCL Pesticides
Phase 2 Step 1 Ground Water Investigation -
TAL Metals
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1-
REMEDIAL INVESTIGATION
PINAL REPORT
Geigy Chemical Corporation Site
Aberdeen, North Carolina
LIST OP TABLES
(continued)
Phase 4 Step 2 Ground Water Investigation -
Field Parameters
Phase 4 Step 2 Ground Water Investigation -·
TCL Volatiles
Phase 4 step 2 Ground Water Investigation -
TCL Pesticides
Soils Removal, Surficial Volumes, February
and October 1989
Phase 1 Soil Samples -TCL/TAL Parameters
Phase 2 Soil Samples -Site Specific Parameters
Phase 2 Background Soils; TCL Pesticides/
TAL Metals
Phase 2 Soils; Sample Locations Above
Significant Concentrations
Phase 3 Soil Samples Analyzed for TCL/TAL
Parameters
Phase 3 Soil Samples -Site Specific Parameters
Phase 3 Soil Samples -TCL/TAL Results
Cation Exchange Capacity and Total Organic
Carbon
Phase 3 Soil Samples; Pesticides Detected at
the Five Foot Sample Interval
Phase 3 Soil Samples; Pesticides Detected
at the Ten Foot Sample Interval
Off-Site Boring; Site Specific Parameters
Additional Surface Soil Samples
Phase 4 Soil Samples; Site Specific Parameters
Soil Volumes Removed, March-April 1991
Building and Soils Removal -Confirmation
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Samples; March-April 1991 4-50
Phase 2 Sediment Samples, Site Specific Parameters 5-4
Off-Site Sediment Samples, Site Specific Parameters 5-5
Phase 3 Sediment Samples,. Site Specific Parameters 5-7
Phase 3 Sediment samples, Total Pesticide 5-10
Concentrations
Phase 4 Sediment Depth Samples; Site-Specific
Parameters 5-12
Physical and Chemical Properties of
Selected Pesticides 7-2
Site and Chemical Data for Pesticides 7-3
Estimated Retardation Factors for Pesticides in
Ground Water 7-10
Summary of Environmental Transformations 7-11
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REMEDIAL INVESTIGATION
FINAL REPORT
Geigy Chemical Corporation site
Aberdeen, North Carolina
LIST OF APPENDICES
TCL/TAL List
Exploratory Boring and Monitor Well Boring Drilling Logs
USGS Piezometer Well Cluster Information
Monitor Well Construction Diagrams·
Quality Assurance Samples; Monitor Well Drilling and
Installation
Physical Laboratory Test Data Sheets
Slug Test Data
Ground Water Analytical Results Collected by EPA Region IV ESD
From Private and Municipal Wells in the Aberdeen Area October
1989
Field Activities Report
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EXECUTIVE SUMMARY
The Geigy Chemical Corporation Site is an approximately one-acre
parcel located just east of the corporation city limits of
Aberdeen, North Carolina on Highway 211 in southeastern Moore
County. The Site was operated as a pesticide blending and
formulation facility from approximately 1947 to 1967. From 1968 to
1989, the Site was operated by retail distributors of agricultural
chemicals, mainly fertilizers.
Three of the Potentially Responsible Parties (PRPs), Olin
Corporation, CIBA-GEIGY Corporation and Kaiser Aluminum & Chemical
Corporation conducted a Remedial Investigation (RI) for the Site in
accordance with an Administrative Order on Consent signed in
December 1988. The objective of the RI was to characterize the
nature and extent of contamination originating from the Site.
Extensive sampling of soils, groundwater, and ditch sediments was
conducted during the RI. Two removal actions (February 1989/
October 1989 and March-April 1991) were also conducted during the
time of the RI. All of the excavated contaminated soils were
disposed off-site in a permitted hazardous waste landfill or
incinerator. The removals greatly reduced the volume and
concentration of contaminants remaining in on-site soils, thereby
minimizing the potential for contaminant migration.
The hydrogeologic investigation identified three aquifers beneath
the site. Ground water flow in the uppermost aquifer is controlled
by recharge areas at the eastern and western ends of the Site and
by moderate slopes on the northern and southern ends of the Site.
Potentiometric data from the shallow monitor wells indicate ground
water flow from the eastern and western portions of the site meet
in an elongated zone of convergence. East of the convergence zone,
ground water flows west and northwest with a hydraulic gradient of
approximately 0.026 ft/ft. West of the convergence zone, ground
water flow is predominantly to the east-southeast with a hydraulic
gradient of approximately 0.017 ft/ft. The uppermost confining
layer is interpreted, through boring logs developed during site
drilling, to be continuous beneath the facility property, however,
south of this parcel the lateral continuity of the uppermost
confining layer is uncertain. Sample collection from the uppermost
confining unit indicated a laboratory permeability of 10·8 cm/sec.
For the area represented by the facility property, no connection
between the uppermost and second aquifer was indicated. South of
this property, however, the hydraulic relation of the uppermost and
second uppermost aquifers in uncertain.
The second uppermost aquifer at the site is approximately 40 feet
thick with a northwesterly ground water flow direction and an
average hydraulic gradient of 0.004 ft/ft. Unconfined conditions
were indicated in the second uppermost aquifer and are most likely
due to its proximity to an outcrop located 2,000-3,000 feet west of
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the Site. The second uppermost aquifer is underlain by the second
uppermost confining layer which is approximately 10 to 13 feet
thick beneath the site. The third uppermost aquifer extends from
the base of the second confining layer to approximately 60 feet.
Ground water in the third aquifer occurs under confined conditions.
The single monitor well screened in the third aquifer did not allow
for the determination of flow direction or hydraulic gradient.
Ground water sampling from monitor wells installed at the site
indicated that contamination in the uppermost aquifer directly
underlying the Site was limited to the pesticide constituents. No
volatile constituents, including TCE, or semi-volatile constituents
were detected in the uppermost aquifer. The lead concentration in
all wells (both shallow and deep) was below the MCL. The pesticide
contamination in the shallow aquifer underlying the Site is
migrating toward the center of the site due to the convergence of
ground water flow from the east and west. Pesticides were not
detected in the shallow USGS well (GS-02-3) located 130 feet east
of Aberdeen Municipal Supply Well 4, nor were they detected in
shallow wells located to the north, west or southwest of the Site.
Pesticides were detected in shallow well MW-l0S located
approximately 120 feet south of the Site.
The vertical extent of pesticide contamination directly underlying
the Site is limited to the uppermost aquifer. No pesticides were
detected in the second aquifer or the third aquifer directly
underlying the Site. Pesticides were. detected off-site in the
second aquifer at MW-11O located approximately 375 feet south of
the site. The aquitard which separates the uppermost and second
uppermost aquifer beneath the Site is present at MW-11O.
TCE was detected in the second uppermost aquifer in two on-site
monitoring wells (MW-6O and MW-4O) and was detected below the
quantitation limit in the third uppermost aquifer (PZ-1). TCE was
also detected upgradient (southeast) of the site in two private
domestic wells. TCE was not detected in the soils or shallow
ground water at the Site. Additional characterization of the second
uppermost aquifer will be conducted during the pre-design
activities associated with the uppermost aquifer.
Surface and subsurface soil samples were collected throughout the
entire Site. Volatile and semi-volatile constituents were not
detected in concentrations above the detection limit in any soil
samples. Pesticide concentrations in on-site soils are generally
below 100 mg/kg. Pesticide concentrations in subsoils were not
present or were below 10 mg/kg total pesticides with the exception
of samples SS-73-5 (300 mg/kg) and SS-06 (450 mg/kg).
concentrations of copper and zinc in on-site soils were within the
ranges indicated in background soils. Lead concentrations were
elevated in surface soils located adjacent to Highway 211 and are
believed to be associated with highway traffic. Depth sampling at
SS-82 (located adjacent to the highway) indicated that lead
concentrations in the surface soils are not migrating vertically.
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Total BHC, total DDT and toxaphene were detected in the ditch
sediments. BHC concentrations were detected at less than 1 mg/kg
in ditch sediments. The highest concentration of total DDT was
detected in off-site sediment sample OSD-27 at 77 mg/kg. Toxaphene
was detected at the highest concentration at SD-9-2.5 at 130 mg/kg.
The horizontal and vertical extent of contamination in soils and
ditch sediments has been defined at the site. The lateral extent
of contamination in the uppermost aquifer is sufficiently
characterized for selection of a remedy and implementation of pre-
design activities.
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REMEDIAL INVESTIGATION
FINAL REPORT
Geigy Chemical corporation Site
Aberdeen, North Carolina
1.0 INTRODUCTION
The Geigy Chemical Corporation Site (the site) is located just east
of the corporation city limits of Aberdeen, North Carolina on
Highway 211 in southeastern Moore County (Figure 1-1). The Site
was operated as a pesticide blending and formulation facility from
approximately 1947 to 1967. From 1968-1989, the Site was operated
by retail distributors of agricultural chemicals, mainly
fertilizers.
Three of the Potentially Responsible Parties (PRPs), Olin
Corporation, CIBA-GEIGY Corporation, and Kaiser Aluminum and
Chemical Corporation, agreed to conduct a Remedial Investigation
and Feasibility study (RI/FS) for the Site. An Administrative
Order on Consent (AOC) covering the RI/FS was signed by the USEPA
Region IV Administrator and the PRPs in December 1988. An RI/FS
Work Plan (1) and a Project Operations Plan (POP) (2) were written
in accordance with the consent order and approved by the EPA.
Field work commenced at the Site during May 1990. The information
collected during the RI is presented in summary form in this
report.
1.1 Purpose of the Remedial Investigation
The purpose of the RI report is:
• Describe the site, its operating history and previous
investigations.
• Describe the environmental setting of the Site and
surrounding areas.
• Characterize the nature and extent of contamination
originating from the Site.
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Collect data on hydrogeologic conditions at the site,
including a description of the stratigraphy, lithology
and hydrogeologic units.
Present the results obtained from soil, ditch sediment
and ground water sampling events.
Delineate the potential contaminant migration pathways .
Describe the removal actions carried out during the term
of the RI/FS.
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1.1.1 Characterization of the Site
One objective of this investigation was to determine the areal and
vertical extent of contaminant migration originating from the Site.
Potential routes of off-site migration of chemicals were identified
as follows:
• sediment transport in on-site ditches
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ground water discharge to downgradient locations
ground water discharge to lower aquifers
airborne transport of soil/waste particulates to off-site
locations
• on-site soil erosion
Ground water, surface soils and ditch sediments are the principal
media for chemical migration. Therefore, field activities were
implemented to evaluate the presence and potential impact of such
migration. There are no surface water bodies on-site. The ditch
that traverses the Site collect9 stormwater and is generally dry
(except after storm events). Surface water as a potential route of
migration, therefore, is not included in this report.
1.1.2 Data Collection
The field investigation programs were designed and implemented to
provide additional information regarding both physical and chemical
characteristics of the Site. The activities conducted under the
field programs delineated in the RI/FS Work Plan are summarized as
follows:
Task 1 -RI/FS Work Plan Preparation
An RI/FS Work Plan was prepared prior to initiation of field
activities. The document detailed health and safety operations;
the number, location and method of soil and ground water sample
collection; well installation procedures; chemical analyses; and,
measures taken to ensure quality control. The document included a
Site-specific Health and Safety Plan, a Quality Assurance Project
Plan (QAPP) and a Site Operations Plan (SOP), as described in Tasks
3,4 and 5.
Task 2 -Site Reconnaissance
Site reconnaissances were conducted during August 1988 and January
1989 in order to assess the health and safety requirements for the
RI and to verify existing conditions. The August 1988
reconnaissance provided a preliminary assessment of migration
pathways based on Site features. Results of the reconnaissance
were presented in the RI/FS Work Plan (1). The January 1989 Site
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reconnaissance identified obvious areas of pesticide contaminated
surface soils near the warehouse loading doors and railroad dock.
These areas were subsequently removed (Reference Section 1.2.2).
Task 3 -site-Specific Health and Safety Plan
A Site-specific Health and Safety Plan was developed for the RI and
approved by the EPA as Appendix A to the RI/FS Work Plan. The
purpose of the plan was to establish safety protection requirements
and procedures for field teams; ensure adequate health and safety
equipment and training for personnel during on-site activities; and
to protect the general public and environment during the RI.
Tasks 4 and 5 -Quality Assurance Requirements
Site-specific quality assurance requirements for sampling programs
associated with the RI were developed in the QAPP (Appendix B of
the Work Plan) and the Field Sampling Plan (Appendix C of the Work
Plan). The plans address field sampling procedures, analytical
methods, and data evaluation.
Tasks 6 through 9 -site Security, Subcontractors, Community
Relations and Access Agreements
General procedures were identified regarding Site security,
procurement of subcontractors, community relations and reporting
and, access to work areas.
Task 10 -Initial Soil Removal
Prior to conducting the field activities, an initial soil removal
operation was conducted. The removal is discussed in Section
1. 2. 3.
Task 11 -Subsurface Soils Investigations
The subsurface soils investigation was conducted in four phases.
In Phase 1, eleven surface soil samples were collected and analyzed
for the Target Compound/Target Analyte List (TCL/TAL) of parameters
(Reference Appendix 1-A). The purpose of the initial sampling was
to develop Site specific parameters for analysis during subsequent
phases.
Phase 2 soil samples were surface grabs collected on a forty foot
grid across the Site to delineate the areal extent of
contamination. The samples were analyzed for Site-specific
parameters as developed in Phase 1 and approved by EPA. Based on
the Phase 1 analytical results, pesticides were chosen as Site
specific parameters for sampling. In addition, copper and zinc,
which were added to fertilizers as micronutrients, were added to
the site specific parameters. Lead, which was indicated as a
regional ground water concern, was also added to the list of Site
specific parameters to be analyzed at the site.
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Phase 3 of the soils investigation consisted of depth sampling
(i.e., two, five and ten foot depths) at the Phase 2 sample
locations that exhibited significant quantities of site-specific
parameters. The purpose of the Phase 3 soil samples was to present
a vertical profile of potential contaminant migration.
Phase 4 samples included additional surface soil grabs to further
define the horizontal extent of contamination and to define the
boundaries of potential "hotspots".
The soils investigation is discussed in Section 4 of this report.
Task 12 -Ground Water Investigation
To evaluate the movement and quality of ground water in the
immediate vicinity of the Site, a ground water investigation (Phase
2, Step 1) was implemented. Prior to installation of monitoring
wells, an exploratory boring was installed on-site to determine the
Site stratigraphy. The information from the exploratory boring was
used to refine the anticipated depths and screened intervals of the
monitor wells.
During Phase 2, Step 1 of the ground water investigation, ten
monitor wells were installed on-site. The wells were installed at
various depths to assess the potential for vertical migration of
constituents. six wells were installed in the uppermost aquifer
(MW-lS through MW-6S), three wells were installed in the second
uppermost aquifer (MW-lD, MW-4D and MW-6D) and one well was
installed in the third uppermost aquifer (PZ-1). The Phase 2, Step
1 ground water results indicated the presence of pesticides in the
uppermost aquifer. An additional ground water investigation (Phase
4, Step 2) was, therefore, implemented. Nine monitor wells (six
uppermost aquifer wells, and three second uppermost aquifer wells)
were installed at off-site locations to assess the potential of
off-site migration of constituents from the site. In addition, the
Phase 4, Step 2 investigation included sampling of two upgradient
private wells to assess the origin of trichloroethene indicated in
on-site wells MW-4D and MW-6D. Sampling of a USGS observation well
in proximity of the Site was also conducted. The ground water
investigation is discussed in Section 3 of this report.
Task 13 -Ditch Sediment Investigation
Samples of sediments from on-site ditches were collected to provide
information on the transport of potentially contaminated sediments
to off-site locations. Ditches are utilized to convey stormwater
from the Site and are normally dry during periods of no rainfall.
The ditch sediment investigation is discussed in Section 5.
1-5
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Task 14 -Preparation of a Remedial Investigation Report
The RI Report presents a compilation of data collected during the
Site investigation. In addition, the report discusses the nature
and extent of contamination at the site and the fate and transport
of contaminants. The data is presented in a manner to allow the
development of remedial alternatives as well as an assessment of
potential risks associated with the Site.
1.2 Site Background
1.2.1 site History/Waste Characterization
The Site has been leased and operated by various chemical companies
since about 1947. From approximately 1947 to 1967, the Site was
leased or rented by several companies for pesticide formulation and
retail sales. Since 1968, the Site has been used by retail
distributors of agricultural chemicals, mainly fertilizers. The
most recent occupant, Lebanon Chemical Corporation, operated a farm
service center on the Site for retail distribution of agricultural
pesticides and fertilizers. The Site is currently unoccupied;
however, the Aberdeen and Rockfish Railroad which traverses the
southern portion of the site is still active.
Known operators at the site and approximate dates of operation are
as follows:
• White & Peele (1947-1948)
• Blue Fertilizer (1948-1949)
• Geigy Chemical Corporation (now CIBA-GEIGY Corp.) (1949-
1955)
• Olin-Matheison Corporation (now Olin Corp.) (1956-1967)
• Columbia Nitrogen Corporation (1968)
• Kaiser Aluminum & Chemical Corporation (1969-1984)
• Lebanon Chemical Corporation (now Kaiser-Estech Corp)
(1985-1989)
Agricultural fertilizers, both liquid and dry, in bulk and bagged
form, have been distributed from the facility at various times
during the operating history. Micronutrients, such as copper and
zinc, were added to fertilizers in small quantities (i.e. 0.05% to
0.3%) to increase the quality and yield of crops. The pesticides
DDT, Toxaphene and BHC are known to have been formulated on-site.
Technical grade DDT, toxaphene and BHC were shipped in bags or
barrels to Aberdeen. The technical grade pesticide was 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.
1-6
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Past disposal and shipping practices of the former operators are
unknown. There is no knowledge of any past enforcement actions or
violation citings at the site. In addition, no known inspections
by the North Carolina Department of Environmental Management (DEM)
or Department of Natural Resources (DNR) occurred. As discussed in
Section 1.2.3, an EPA site investigation was conducted at the Site
in March 1988 by NUS Corporation. The NUS investigation was the
only sampling conducted prior to the PRPs Remedial Investigation.
The NUS investigation was preliminary in nature and was not
intended to take precedence over the Remedial Investigation.
The Site was proposed for inclusion of the National Priorities List
(NPL) on June 24, 1988. The NPL listing was subsequently finalized
in September 1989.
1.2.2 Site Description
The Site is an approximately one-acre parcel located on the
Aberdeen and Rockfish Railroad right-of-way, just east of the
corporation city limits of Aberdeen, on Highway 211 in southeastern
Moore County. The property is in the form of an elongated triangle
between Highway 211 and the railroad, with the highway and railroad
intersecting at the apex of the triangle. A Site location map is
provided as Figure 1-1.
The Site is currently vacant and consists of partial concrete
foundations from two former warehouses, an office building, and a
concrete tank pad as shown on the site plan and topographic map
(Figure 1-2). The tank pad previously held four above ground
storage tanks with capacities of 8,500 to 10,000 gallons each. The
tanks, used to store liquid fertilizer solutions, were removed by
Lebanon Chemical Company upon vacating the Site in 1989.
At the east end of the former warehouse buildings is an on-site
water supply well. The total depth of the well was sounded at 140
feet, however, records of the screened interval and other
construction details are not available. The well water was
probably used for process operations, lavoratories, showers and on-
site drinking water.
No record of hook-up to municipal water or sewer systems has been
found. No septic tank or field drain could be located on Site.
The warehouse superstructures and some soils were removed during
March through April 1991 in a voluntary action undertaken by the
PRPs. The AOC was amended in February 1991 to include the removal.
The former warehouse buildings were constructed in various phases.
The first construction was initiated prior to 1950 and consisted of
the 60 square foot area on the eastern end of former Warehouse
Building A. Additional portions of former Warehouse Building A
were constructed westward, with former Warehouse Building B the
last constructed. The building superstructure was composed of
wooden columns and beams overlain by sheet metal to comprise the
1-7
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I. 1:
1:
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1'
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,
1-
'
••
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0
PAVED ROAD
DIRT ROAD
FWLROAD
FENCE
PROPERTY LINE --
TREE LINE
LONE TREE 0
INDEX CONTOUR -0-
INTERMEDIATE CONTOUR -
LEGEND
POWER POL£
SIGN
POST
FlRE HYDRANT
CONTROL POINT
IRON PIN
LABELED ITEM
SPOT Et£YATION • ...
.. 60 120 l&O n' .
SCl.l.E: AS SHOWN
N
FIGURE 1~2. SITE PLAN.
GEIGY CHEMICAL CORPORATION SITE
ABERDEEN, NORTH CAROLlNA
l]i{J ERM-SOUTHEAST, INC
1-8
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walls and roof. There were various rolling doors which provided
truck and railroad dock access to the interior of the buildings.
The east end of former Warehouse Building A (including the original
structure) was believed to have been used primarily for the
formulation and packaging of pesticides. The remaining portions of
the former Warehouse were used primarily for the storage of
fertilizers and other agricultural chemicals.
1.2.3 Previous Investigations
An EPA site investigation was conducted at the Site in March 1988
by NUS Corporation (7). The objective of the site investigation
was to collect soil and ground water samples from on-site and off-
site locations to provide data necessary to support an EPA Hazard
Ranking System (HRS) evaluation.
The NUS investigation was conducted prior to any removal actions
that have taken place at the Site. In addition, the Site was
regraded by the railroad after the NUS investigation. Precise
sample locations were not provided in the NUS report and therefore,
the usefulness of the data was limited in subsequent
investigations. The soils analytical data collected during the
investigation no longer reflect existing Site conditions.
None of the analyzed organic constituents including pesticides were
detected in the on-site water supply well. Isomers of BHC (i.e.,
alpha, beta, delta and gamma) were detected in five ground water
samples from off-site sampling locations: two private wells and
three of the municipal wells. Lead was detected in concentrations
exceeding the published drinking water standards at that time in
two private wells (PW-01-Booth and PW-05-Bait and Tackle Store at
67 and 95 ug/1, respectively). Lead was not detected in the on-
site ground water sample. Table 1-1 provides the analytical
results and Figure 1-3 shows the locations of the wells. Table 1-1
also includes analytical results of samples collected from the
private wells during 1989.
1-9
::,
SAMPLE ID:
COMMENTS:
LOCATION FROM SITE:
SAMPLE DATE:
GAMMA-BHC
DELTA-BHC
NOTES:
J • QUANTITATIVE ESTIMATE
NR • NOT REPORTED
UG/L
UG/l
TABLE1-1
DETECTED PESTICIDE CONSTITUENTS
PRIVATE WELL GROUND WATER SAMPLES
PW-01 PW-07 MUW-01
BOOTH WELL J. DAVIS WELL MUNICIPAL WELL
1200 FT SOUTH 3200 FT SE 3200FTWEST
3/24/87 10/31/89
0.2 0.011J
NR 0.28 NR 0.48 NR 0.011J
MUW-04
MUNICIPAL WELL
900FTWEST
3/24/87 10/31/89
4.0
NR 1.4
MARCH 1987 DATA FROM THE FINAL SAMPLING INVESTIGATION REPORT, MARCH 18, 1988, NUS CORPORATION (7)
OCTOBER 1989 DATA FROM EPA REGION IV ESD
Tab_ 1-1 (1/14/92)
MUW-09
MUNICIPAL WELL
4200FTSW
NR 0.067
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_,.--
■ PRIVATE SUPPLY WELL
NOTE: MUNICIPAL SUPPY WELLS AND USGS WELL CWSTERS SPOT
LDCATED BASED UPON INFORMATION;SUPPLIED BY USGS. PRIVATE
SUPPLY WELLS SPOT LOCATED BASED UPON NUS (1988) REPORT
AND AERIAL PHOTOGRAPHY.
ADAPTED FROM USGS SOUTHERN PINES, NC AND PINEBWFF, NC
TOPOGRAPHIC QUADRANGLES.
D 2000
SCALE IN FEET INC
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1.3 Report Organization
This report is organized in a manner similar to that suggested in
the document Guidance for Conducting Remedial Investigations and
Feasibility Studies under CERCLA (October 1988). The major
sections are organized as follows:
Executive Summary
Section 1 -
Section
Section
Section
Section
Section
Section
Section
Section
Section
Section
Section
Section
section
Section
Section
2 -
2.1 -
2.2
2.3
2.4
2.5
2.6
2.7
3 -
3.1 -
3.2
3.3
3.4
3.5
3.6
Introduction
Area Features
Geographic Setting and Topography
Land Use and Economy
Regional Geology
Regional Hydrogeology
Demographics
Climate/Air Quality
Ecological Habitats
site Hydrogeologic Investigation
General Stratigraphy/Lithology
Hydrogeologic Units
Monitoring Well Installation
Physical Laboratory Tests
Aquifer Tests
Ground Water Sampling and Analysis
Section 4 -Soil Investigations
Section 4.1 -General
Section 4.2 -Soil Description
Section 4.3 -Soil Sampling
Section 5 -Ditch Sediment Investigation
Section 5.1 -General
Section 5.2 -Ditch Sediment Description
Section 5.3 -Ditch Sediment Sampling
Section 6 -Nature and Extent of Contamination
Section 6.1 -Ground Water
Section 6.2 -Soils
Section 6.3 -Ditch Sediments
Section 6.4 -Air
Section 7 -Contaminant Fate and Transport
Section 8 -Summary and Conclusions
1-12
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2.0 AREA FEATURES
2,1 Geographic Setting and Topography
The site is located in Moore County, North Carolina approximately
one-half mile east of the Town of Aberdeen. Aberdeen lies in the
Sand Hills physiographic province. The Sand Hills area is
characterized by rolling hills underlain by well drained,
unconsolidated sands. Many streams have cut deeply into the sandy
sediment. The overall slope of the Sand Hills area is to the south
and east and the average decrease in elevation is about 25 feet per
mile. A USGS topographic map of the Aberdeen area is presented in
Figure 2-1.
Sand Hills region ranges from about 270 feet mean
to more than 500 feet msl. The area around
in elevation from about 450 to 650 feet msl.
runs through the area at an elevation of
Elevation in the
sea level (msl)
Aberdeen ranges
Aberdeen Creek
approximately 325 feet msl.
2.2 Land Use and Economy
Moore County occupies a total area of 672 square miles and has an
estimated population of 59,013 people (1990 census).
Manufacturing and lumbering are the principal industries in Moore
County. Industrial plants in the area manufacture diverse products
such as textile mill products, furniture, fabricated metal products
and industrial machinery and equipment. The tourist trade is
important near Southern Pines, where golf courses and other
recreational facilities are maintained. These attractions and the
resulting service and entertainment industries have been largely
responsible for the area's emergence as a popular resort location.
Agriculture is also vital to the economy of the area.
Historically, agriculture has played a major role in Moore County
economics, but has declined somewhat in recent years. Economic
statistics with respect to agriculture in the area are not
available for past years. The principal horticultural crops
currently grown in the area include peaches, apples and grapes.
The principal field and forage crops grown are watermelons, corn,
soybeans, sweet potatoes, tobacco, and coastal bermuda.
As previously stated, the Geigy Chemical Corporation Site is
located on a railroad right-cf-way on Route 211 just east of the
city limits of Aberdeen in eastern Moore County. The Site is
bordered to the north by Route 211, to the south by a wooded area
and to the west by Route 211 and the Aberdeen and Rockfish
railroad. A residential property borders the east. A farm is
located to the southeast of the site while the property immediately
north of the opposite side of Route 211 is used for commercial
purposes. A housing development is located 1/4 mile to the
northwest of the site.
2-1
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Within 0-1 miles of the site, there are 355 families and a total of
1,208 people with a median age of 34 years. Approximately 132
people or 11% of the population within the 0-1 mile radius are
between the ages of 7 to 13 years (Reference 1990 Census of
Population and Housing).
2.3 Regional Geology
2.3.1 Geology
The geology of the North Carolina Coastal Plain province has been
described by Schipf (8) and summarized by Winner and Coble (9) and
Giese and others (10). The geology of the North Carolina Coastal
Plain generally consists of unconsolidated sedimentary rocks which
were deposited on top of crystalline basement rocks. In general,
the Coastal Plain sediments dip and thicken toward the southeast.
The thickness of the sedimentary rocks in the Coastal Plain ranges
from several feet at its western limit to more than 10,000 feet at
the North Carolina coastline. The thickness of the sedimentary
rocks in the Aberdeen area is approximately 200 to 250 feet.
The generalized stratigraphic units of the North Carolina Coastal
Plain are presented in Table 2-1. The rocks range from early
Cretaceous to Holocene in age. The stratigraphic units present in
Moore County, in ascending order above the basement rocks, are the
Cape Fear Formation, the Middendorf Formation and the Pinehurst
Formation.
The Cape Fear formation is late Cretaceous in age and unconformably
overlies the crystalline basement rocks. The Cape Fear Formation
is generally composed of alternating beds of unconsolidated sand
and clay that typically range in thickness from three to fifteen
feet (Winner and Coble (9)). In Moore County, the Cape Fear
Formation outcrops only in the stream valleys in the eastern
portion of the county.
Overlying the Cape Fear is the Middendorf Formation, also of late
Cretaceous age. The Middendorf Formation is interpreted to be an
on-shore, non-marine facies of the Black Creek Formation which
exists in the Sand Hills area (Winner and Coble (9)). The
Middendorf Formation is typically composed of a mixture of sands
and silty sands with interbedded layers of clay, silty clay and
gravel. Cross bedding, lenses, pinch outs and facies changes are
typical of the deposits of the Middendorf.
Unconformably overlying the Middendorf Formation and capping the
unit in the Sand Hills region is the Pinehurst Formation of
Tertiary Age. The Pinehurst Formation typically consists of poorly
sorted unconsolidated sands and gravel.
West of the Coastal Plain province, the crystalline basement rocks
of the Carolina Slate Belt outcrop in the Piedmont province. The
Piedmont rocks are comprised of metamorphic sandstones, mudstones,
and igneous rocks. In northern Moore County, the Piedmont rocks and
2-3
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TABLE 2-1
GENERALIZED STRATIGRAPHIC UNITS
NORTH CAROLINA COASTAL PLAIN
·.···.·> /. i{ .. t<· <>i •r••·--•~••·••:LiL~< . .. . · ... tc r~ . . Y. i __ ·. ·•··-.. t ---•·•· .. _-•·<? :/·,-_ •..• ·.> i .. -·-•-· .... ,-.: ... : .:-:·: .. ,-
HOLOCENE INFORMAL NAMES, ALLUVIUM, DUNES, ETC.
PLEISTOCENE INFORMAL NAMES USED AS: TERRACE DEPOSITS,
PLEISTOCENE DEPOSITS, OR PLIOCENE DEPOSITS.
PLIOCENE YORKTOWN FORMATION
UPPER MIOCENE EASTOVER FORMATION
MIDDLE MIOCENE PUNGO RIVER FORMATION
LOWER MIOCENE BELGRADE FORMATION
OLIGOCENE OLIGOCENE LIMESTONE
RIVER BEND FORMATION
UPPER EOCENE NOT RECOGNIZED IN NORTH CAROLINA
MIDDLE EOCENE CASTLE HAYNE LIMESTONE
LOWER EOCENE UNNAMED UNIT RECOGNIZED IN SUBSURFACE
PALEOCENE BEAUFORT FORMATION
PEEDEE FORMATION
BLACK CREEK FORMATION
UPPER MIDDENDORF FORMATION
CRETACEOUS CAPE FEAR FORMATION
UNNAMED UNITS
LOWER
UNNAMED UNITS
CRETACEOUS
...
·••
. .... '
JURASSIC(?) UNNAMED UNITS TENTATIVELY IDENTIFIED IN SUBSURFACE
ADAPTED FROM WINNER AND COBLE, 1989
2-4
TBL 2-1 (AUGUST 24,1991)
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Coastal Plain sediments are separated by a northeast-trending
structural basin containing Triassic sediments. The structure,
known as the Deep River Triassic basin, is approximately ten miles
wide and is bounded on the east and the west by faults. The basin
deposits are poorly-sorted conglomerates, siltstones, and
claystones.
The major geologic units which outcrop in Moore County are
illustrated in Figure 2-2. The surface geology consists of Coastal
Plain sediments, crystalline rocks of the Piedmont province, and
Triassic basin rocks.
2.3.2 Soils
Soils within Moore County have been studied by the USDA Soil
Conservation Service (SCS), as part of the Moore County soils study
which is still in progress. A generalized soils map of the area
surrounding the Site is presented in Figure 2-3.
The Candor series soils occur at the Site and
somewhat excessively drained sandy soils.
characteristics of the common soil types in the
summarized in Table 2-2.
2.4 Regional Hydrogeology
2.4.1 Ground Water
consist of deep,
The principal
Aberdeen area are
The Aberdeen area is underlain by three main regional aquifer
systems, which are termed, in ascending order above the crystalline
basement rocks, the Upper Cape Fear aquifer, the Black Creek
aquifer and the surficial aquifer. The North Carolina Coastal
Plain aquifer systems and their associated geologic units in North
Carolina are summarized in Table 2-3. A generalized hydrogeologic
cross section from the Sand Hills region to the North Carolina
coastline is depicted in Figure 2-4.
In the Coastal Plain aquifer system, ground water movement is
generally from upland areas toward stream valleys. Ground water
recharge occurs primarily by infiltration of rainfall in the
interstream areas. Vertical infiltration of recharge water is
commonly restricted by the occurrence of clay layers which serve as
confining units. Ground water discharge is through seepage into
lakes, streams, and drainage ditches. Discharge also occurs by
evapotranspiration, upward leakage through confining beds to stream
valleys, and upward leakage to the bottom of estuaries.
Surficial Aquifer
The surficial aquifer of the Coastal Plain region of North Carolina
consists primarily of Quaternary age deposits which overlie
Cretaceous sediments. The age and lithology of the surficial
aquifer deposits vary across the Coastal Plain area. In Moore
2-5
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73 "<
COUNlY LINE
LEGEND
SEABOARD
COAST LINE
RAILROAD
l'S1
□
□
[IT]
-CZ-METAMORPHIC AND INTRUSIVE ROCKS OF EASTERN
SLATE BELT, PIEDMONT PROVINCE (UNDIFFERENTIATED)
li -TRIASSIC BASIN DEPOSITS (UNDIFFERENTIATED)
Km-MIDDENDORF FORMATION
Tp-PINEHURST FORMATION
~ Kc-CAPE FEAR FORMATION
(ADAPTED FROM NCNRCD, 1985)
I :fi!i] ERM-SOUTHEAST, INC
2-6
10 I
SCALE IN MILES
FIGURE 2-2. GENERALIZED GEOLOGIC
MAP OF MOORE COUNTY.
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576 \
.. ---------------
576
576
HWY. 211
716
0
716
./
576
716
GEIGY CHEMICAL
CORP. SITE
716
1320'
SCALE IN FEET
SEE TABLE 2-2 FOR NAMES AND DESCRIPTIONS OF NUMBERED SOIL AREAS.
mGJ ERM-SOUTHEAST, INC
2-7
FIGURE 2-3. son. SURVEY OF AREA
NEAR THE GEIGY CHEMICAL CORP. SITE
ABERDEEN, NORTH CAROLINA
-
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I en
-iiii iiii iiii iiii liiii liiil
UBLISHE MAP UNIT UNIT
SYMBOL SYMBOL DESCRIPTION
Ae 570 AILEY
Va 576 VARCLUSE
Vu 60 VARCLUSE
UD UD UDORTHENTS
Ca 716 CANDOR
Gh 574 GILEAD
NOTES:
DEPTH
(INCHES)
0-24
24-36
36-50
50-72
0-15
15-29
29-58
58-72
0-15
15-29
29-58
58-72
0-21
21-34
34-58
56-72
72-80
0-5
5-6
8-42
42-72
72-80
TABLE2-2
PRINCIPAL SOILS CHARACTERISTICS
MOORE COUNTY NORTH CAROLINA
USDA
CLASSIFICATION
LOAMY CLAYEY ORGANIC SANO; LOAMY SANO;
SAND; CLAYEY ORGANIC SANO
SANDY LOAM; SANDY CLAY LOAM
SANDY LOAM; SANDY CLAY LOAM
CLAYEY ORGANIC SANDY LOAM; SANDY LOAM;
SANDY CLAYEY LOAM
LOAMY SAND; SAND: FINE SANDY LOAM;
SANDY LOAM; SANDY CLAY LOAM
SANDY CLAY LOAM; SANDY LOAM
SANDY CLAY LOAM; SANDY LOAM; SANDY CLAY
SANDY LOAM; SANDY CLAY: LOAMY SAND
LOAMY SAND; SAND; FINE SANDY LOAM;
SANDY LOAM; SANDY CLAY LOAM
SANDY CLAY LOAM; SANDY LOAM
SANDY CLAY LOAM; SANDY LOAM; SANDY CLAY
SANDY LOAM; SANDY CLAY; LOAMY SAND
SEE NOTE NO. 1
SAND
LOAMY SAND
SANO
SANDY LOAM; SANDY CLAY LOAM
VARIABLE
LOAMY SAND; GRAVELLY LOAMY SAND
SANDY LOAM; GRAVELLY SANDY LOAM
SANDY LOAM; SANDY CLAY; LOAM
SANDY CLAY; CLAYEY LOAM; CLAY
SANDY LOAM; SANDY CLAY LOAM
VARIABLE
-SP• POORLY GRADED SANDS AND GRAVELY SANDS
-SM • SIL TY SANOS. SANO-SILT MIXTURES
-SC• CLAY SANOS. SANO-CLAY MIXTURES
-ML • INORGANIC SILTS, VERY FINE SANDS. ROCK FLOUR, SILTY OR CLAY FINE SANOS
-CL• INORGANIC CLAYS OF LOW TO MEDIUM PLACICITY. GRAVELY CLAYS. SANDY CLAYS,
SILTY CLAYS, LEAN CLAYS
-CH• INORGANIC CLAYS OF HIGH PLACICITY, FAT CLAYS
-SM-SC• COURSE SIL TY SANDS, SANO-SILT MIXTURES
UNIFIED
CLASSIFICATION
SM.SP-SM
SP.SM
SM,SC.SM-C
SM,SC,SM-C
SM.SC,SM-C
SM.SP-SM.SM-SC,
SM.Cl-ML.Ml
SC.SM-SC
SC.SM-SC.SM
SM.SC.SM-SC
SM.SP-SM.SM-SC,
SM.CL-ML.ML
SC.SM-SC
SC.SM-SC.SM
SM.SC.SM-SC
SM.SP-SM
SM.SP-SM
SM.SP-SM
SC,SM-SC,SM
----
SP-SM.SM
SM
SM-SC.SC
SC.CL.CH.ML
SC.CL.CL-ML.SM-SC
-
-SP-SM• POORLY GRADED SANOS TOA.ND GRAVELLY SANOS TO SILT-SANOS. SANO -SILT MIXTURES.
-CL-ML• INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITY. GRAVELLY CLAYS, SANDY CLAYS, LEAN CLAYS.
INORGANIC SILTS, VERY FINE SANOS, ROCK FLOUR. SILTY OR CLAYEY FINE SANDS.
PERMEABILITY
(INCHES/HOUR)
6-20
6-20
0.06-0.2
0.06-0.2
0.06-0.2
0.6 -20.0
0.6-6.0
0.08-0.8
2.0-8.0
0.8-20.0
0.8-8.0
0.08-0.8
2.0 -8.0
8-20
8-20
8-20
0.8-2
-
2-6
2-6
0.8-2
0.08-0.6
0.2-0.8
--
(1) DISTURBED SOIL AREAS, SUCH AS BORROW PITS. LANDFILLS ANO CUT ANO FILL AREAS ARE PLACED IN THESE UDORTHENA UNITS.
THESE UNITS ARE BROADLY DEFINED.
TBL 2-2 (9/13/91)
111:11111 111:11111 -
OEPTH·TO HIGH
WATER TABLE
(FEET)
6
>6
>6
16
1.5-2.5
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TABLE 2-3
NORTH CAROLINA COASTAL PLAIN GEOLOGIC
AND HYDROGEOLOGIC UNITS
YORKTOWN CONFINING UNIT
YORKTOWN FORMATION
YORKTOWN AQUIFER
r.EccA-=s-=T-=-o:-:vE=R=-=Fo=RM,..,..,,AT=1-=o""N,-----l
PUNGO RIVER CONFINING UNIT t-------------1
PUNGO RIVER FORMATION
PUNGO RIVER AQUIFER
CASTLE HAYNE CONFINING UNIT
r.B~E~L-=G-=R-A~DE=-=F-=o~R-M-AT=l~O-N-----l
RIVER BEND FORMATION
CASTLE HAYNE AQUIFER
CASTLE HAYNE LIMESTONE
BEAUFORD CONFINING UNIT
r.B"'E'7A7'U"'F-=o-=R-=-D-=F-=o-=R7'M:-:A-::T"1o""N,-----l
BEAUFORD AQUIFER
~======------lPEEDEE CONFINING UNIT
PEEDEE FORMATION
NOTES:
PEEDEE AQUIFER
UPPER•CAPEFEAR CONFINING·UNIT(i{/: YFE§BSfii!fgiJ~§Qltg§ /
LOWER CAPE FEAR CONFINING UNIT
LOWER CAPE FEAR AQUIFER
LOWER CRETACEOUS CONFINING UNIT
LOWER CRETACEOUS AQUIFER
SHADING INDICATES THE FORMATIONS, AQUIFERS, AND
CONFINING UNITS THAT OCCUR IN MOORE COUNTY
ADAPTED FROM WINNER AND COBLE, 1989
TBL 2-3 (9/9/91)
2-9
--
A
f-EET
,oo
200
~,l"A
\(VU
200
,oo
600 "-' I
~
0 800
1,000
1,200
1.400
----liiil iiii iiiil lifi
YORKTOWN CONFINING UNIT (CU9)
Hydrogeologic section A-A' from Richmond County to Brunswick County
(modified from Winner and Coble, 1989).
liiii liiiiil liiiiii -
A'
HET
,oo
200
~;1:A
1 l V[ l
200
,oo
WO
800
1,000
1,200
1,400
FIGURE 2-4. GENERALIZED HYDROGEOLOGIC SECTION
FROM USGS OPEN FILE REPORT 90-372
~ ERM-Southeast. Inc.
■••• Envlronrnental Rnoarcn "•na~mcnt
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County, the surficial deposits are composed of sediments of the
Pinehurst Formation of Tertiary age. The Pinehurst Formation
generally is composed of poorly sorted fluvial material consisting
of coarse sand and gravel with silt and kaolinitic clay. The
percentage of sand in the aquifer in the Sand Hills area generally
is less than 70 percent (Winner and Coble, (9)).
The surficial aquifer is important to the Coastal Plain aquifer
system because it receives infiltration from rainfall and serves as
a source bed that moves downgradient into the deeper aquifers and
transmits water laterally to streams. The average thickness of the
surficial aquifer in the North Carolina Coastal Plain is 35 feet.
The average hydraulic conductivity is approximately 29 feet/day
(Winner and Coble, (9)).
Black creek Aquifer and Confining Unit
In the Sand Hills area, the Black Creek confining unit lies between
the surficial aquifer and the Black Creek aquifer. The Black Creek
confining unit is generally composed of clay, silty clay and sandy
clay. In the Sand Hills area, the Black Creek confining unit is
defined as the uppermost clay bed of the Middendorf Formation. The
average thickness of the Black Creek confining unit in the sand
Hills area is 10 feet (Winner and Coble, (9)).
The Black Creek aquifer lies between the Black Creek confining unit
and the Upper Cape Fear confining unit. The Black Creek aquifer of
the Inner Coastal Plain consists mainly of late Cretaceous age
sediments of the Black Creek and Middendorf Formations. In the
Sand Hills area, the aquifer is composed of fluvial material
consisting of a mixture of fine-to medium-grained sand and silty
kaolinitic clay beds. The average percentage of sand in the
aquifer is 58 percent (Winner and Coble, (9)).
Recharge to the Black Creek aquifer occurs mainly in updip
interstream areas with discharge from the aquifer occurring to
streambeds and in downdip coastward areas. The average thickness
of the Black Creek aquifer in the North Carolina Coastal Plain is
165 feet, with the thickness ranging from 22 to 409 feet. The
average estimate of hydraulic conductivity is 28 feet/day (Winner
and Coble, (9)).
Ground water from the Black Creek aquifer in the Sand Hills is
generally low in dissolved solids and hardness and is slightly
acidic. The Black Creek aquifer serves as the primary source of
potable ground water in the Aberdeen area.
Upper cape Fear Aquifer and Confining Unit
The Upper Cape Fear confining unit, overlying the Upper Cape Fear
aquifer, consists of nearly continuous clay, silty clay and sandy
clay beds. In the Sand Hills area, the Upper Cape Fear confining
unit consists of the lowermost clay beds of the Middendorf
Formation. The average thickness of the Cape Fear confining unit
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in the Coastal Plain of North Carolina is 48 feet. In the Aberdeen
area, the confining unit is approximately 60 feet in thickness
(Winner and Coble, (9)).
The Upper Cape Fear aquifer consists of beds of poorly sorted,
fine-to medium-grained sand in a clay matrix. The average
percentage of sand in the aquifer is 62 percent (Winner and Coble,
(9)). As with the Black Creek aquifer, recharge to the Upper Cape
Fear aquifer primarily occurs in updip interstream areas. Natural
discharge from the Upper Cape Fear aquifer occurs along and
directly into streams whose channels incise the unit. The average
thickness of the Upper Cape Fear aquifer in the North Carolina
Coastal Plain is 113 feet and ranges from 481 to 12 feet thick. In
the Aberdeen area, the Upper Cape Fear aquifer is only
approximately 10 to 20 feet in thickness and directly overlies the
crystalline bedrock (Winner and Coble (9)). Due to its limited
vertical extent, the Upper Cape Fear aquifer is not a significant
source of drinking water in the Aberdeen area. The average
estimated hydraulic conductivity is 30 feet/day (Winner and Coble,
(9)) .
2.4.2 Well Inventory
Figure 1-5 shows the location of City of Aberdeen municipal wells,
and selected private wells within a 0.5 mile radius of the Geigy
Chemical Corporation Site. Ground water samples were collected in
1988 by the NUS Corporation from municipal supply wells and private
wells in the Aberdeen area. The purpose of the sampling event was
to identify potential ground water contamination in the vicinity of
the Geigy Chemical Corporation Site (NUS, (7)).
Solvents, pesticides, lead, copper, and zinc were detected in some
of the samples collected from private and municipal wells during
the NUS investigation in the Aberdeen area (NUS, (7)) Reference
Section 1. 2. 3.
2.4.3 Surface Water
2.4.3.1 Occurrence and Flow
Principal drainage within the Aberdeen area is provided by the
Little River and Drowning Creek (Figure 2-1). The divide between
these two drainages is a northwest-southeast trending ridge located
between Pinehurst and Southern Pines. Runoff to the north of the
divide is drained by Nicks Creek, Mill Creek, McDeeds Creek and
James Creek, which discharge to the Little River. South of the
divide, runoff discharges to Drowning Creek (Figure 2-1).
Surface runoff at the site is generally to Aberdeen Creek which
flows into Drowning Creek, which flows southeastward and is part of
the Cape Fear River basin. North-south trending ridges formed by
a well developed, dendritic (i.e., branch-like) drainage pattern
project from the principal divide. Runoff is received by Deep
Creek, Horse Creek, Aberdeen Creek and Quewiffle Creek, which
2-12
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discharge to Drowning Creek. Drowning Creek flows into the Lumber
River which flows southward and is part of the Pee Dee River Basin.
2.4.3.2 Surface Water Usage
An indication of surface water quality in Moore County was
determined from water records of community water supplies. Four
towns in Moore County obtain their community water supplies from
surface water sources. The communities include Carthage, Robbins,
Southern Pines, and Vass. Carthage obtains its water from Nicks
Creek during the summer months, and Twin Pond during the winter
months. Robbins obtains its water supply from Bear Creek.
Southern Pines receives their community water supply from Drowning
Creek, and Vass' supply is from the Little River.
2.5 Demographics
Table 2-4A presents the 1990 Census population profile for
residents within a 0-1 mile radius of the Site. General demographic
characteristics of the people living in the Town of Aberdeen and in
Moore County during the year 1980 (the most recent information
available) are summarized in Table 2-4B. Information listed in the
table includes the number of people living in urban vs. rural
areas, the median age of people based on gender, median and mean
family income in 1979, and occupations of employed people 16 years
and older.
2.6 Climate/ Air Quality
2.6.1 Climate
Moore County is hot and generally humid in summer due to the moist,
maritime air. Winter is moderately cold but short since the
mountains to the west protect the area from many cold waves.
Precipitation is quite evenly distributed throughout the year and
is adequate for all indigenous crops. Table 2-5 provides data on
temperature and precipitation for the survey area as recorded at
Fayetteville and Pinehurst, North Carolina, in the period 1951 to
1973. Aberdeen is approximately 30 miles west of Fayetteville and
approximately five miles south of Pinehurst.
The total annual average precipitation is 43 inches at Fayetteville
and 46 inches at Pinehurst. Of this, 60 percent of the
precipitation usually falls in April through September, which
includes the growing season for most crops. The heaviest one-day
rainfall during the period of record was 5.12 inches at
Fayetteville on September 12, 1960, and 7.12 inches at Pinehurst on
October 15, 1954. Thunderstorms occur approximately 45 days each
year, and most are in summer. Tropical storms moving inland from
the Atlantic Ocean may occasionally cause extremely heavy rain for
one to three days.
2-13
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TABLE 2-4A
Population By Age •.and _Sex
Within a One-Mile Radius of the
Geigy Chemical Corporation Site
GEIGY CHEMICAL SITE: Circle
CORPORATION SITE Latitude: 35,07,30
0-1 MILE Longitude: 79,24,30
Radius:
Degrees
Degrees
l. 00
North:
West:
miles
35.13
i 9. 41
Population
Median Age
Families
1209
34. 0
355
Households
Avg HH Size
Group Quarters
445
2.69
0.8\
Housing Units
Average Value
Average Rent
485
$ 83304
S 2;5
POPULATION BY AGE AND SEX•
Male Female Total Po11ulation Numoer Percent Number Percent Number Percent
Total 590 100.0 618 100.0 1208 100.0
0 -4 44 7. 5 45 7.3 89 7.4 5 -9 47 8. 0 46 7.4 93 7.7 10 -14 53 9.0 43 7. 0 96 7.S 15 -19 51 8.6 44 7.1 95 7. 9 20 -24 31 5.3 36 5.8 67 5. 5 25 -29 3'9 6.6 38 5;1 77 6.4 30 -34 52 a.a 56 9.1 108 a. 9 35 -39 60 10.2 51 8.3 111 9. 2 40 -44 41 6.9 51 8.3 92 7. 6 45 -49 38 6.4 33 5.3 71 5.9 50 -54 25 4.2 24 3.9 49 4 .1 55 -59 25 4.2 35 5.7 60 5.0 60 -64 24 4. l 29 4. 7 .5 3 4. 4 65 -69 21 3.6 29 4.7 50 4 .1 70 -74 21 3.6 23 3.7 44 3. 6 75 -79 8 l. 4 19 3. l 27 2. 2 80 -84 7 1.2 10 1. 6 17 l. 4 85+ 3 0. 5 6 1.0 9 0.7
18+ years 413 70.0 456 73.8 869 71.9 21+ years 390 66.1 433 70.l 823 68 .1 65+ years 60 10.2 87 14.l 147 12. 2
Median Age 32.9 35.1 34.0
NOTE: There was a tendency to report age on the date when the census questionnaire was completed rather than on April 1, 1990. For this reason, about 10\ of persons in most age groups are probably 1 year younger, according to the Census Bureau.
These population counts will not be adjusted, according to a Department
of Commerce announcement made on July 15, 1991.
Source: 1990 Census of Population and Housing, Summary Tape File lA
Copyright 1991 CACI Fairfax, VA 18001 292-1124
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TABLE 2-48
1980 CENSUS OF POPULATION AND HOUSING
AGRICULTURE, FORESTRY, FISHERIES AND MINING
CONSTRUCTION
MANUFACTURING:
NON-DURABLE GOODS 138
DURABLE GOODS 74
TRANSPORTATION 29
COMMUNICATION AND OTHER PUBLIC UTILITIES 39
WHOLESALE TRADE 24
RETAIL TRADE 200
FINANCE, INSURANCE AND REAL ESTATE 30
BUSINESS AND REPAIR SERVICES 31
PERSONAL, ENTERTAINMENT AND RECREATION SERVICES 63
PROFESSIONAL AND RELATED SERVICES:
HEAL TH SERVICES 84
EDUCATIONAL SERVICES 86
OTHER PROFESSIONAL AND RELATED SERVICES 45
PUBLIC ADMINISTRATION 50
REFERENCE: U.S. DEPARTMENT OF COMMERCE, REGIONAL CENSUS CENTER,
CHARLOTTE, NORTH CAROLINA.
(1) 1990 CENSUS DATA OF POPULATION FOR ABERDEEN IS 2700.
(2) 1990 CENSUS DATA OF POPULATION FOR MOORE COUNTY IS 59,013.
2-15
. TBL 2-48 (1/3192)
1,163
1,521
4,247
2,520
464
454
496
2,999
800
465
1,798
1,779
1,711
675
1,047
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MONTH
JANUARY
FEBRUARY
MARCH
APRIL
MAY
JUNE
JULY
. AUGUST
SEPTEMBER
OCTOBER
NOVEMBER
DECEMBER -,
YEARLY AVERAGE
TABLE 2-5
TEMPERATURE AND PRECIPITATION
RECORDED IN THE PERIOD 1951-1973
FAYETTEVILLE, NORTH CAROLINA
TEMPERATURE
AVERAGE AVERAGE
DAILY DAILY
MAXIMUM MINIMUM AVERAGE
(deg. F) (deg. F) (deg. F)
51.0 30.2 40.6
55.3 31.8 43.6
63.5 39.4 51.5
74.8 48.2 61.5
82.6 56.9 69.8
87.2 63.6 75.4
90.2 67.2 78.7
89.6 66.6 78. 1
83.9 60.4 72.2
73.9 49.0 61.5
62.6 39.6 51. 1
53.8 32.9 43.4 .r:c ··•
• ..
-72.4 48.8 . 60.6 .
...
PRECIPITATION
AVERAGE
(in)
3.64
4.41
4.32
3.46
4.23
4.85
5.09
4.83
3.94
3.40
3.25
3.01
48;3TOTAL .
. : :"::;::·
(ADAPTED FROM SOIL SURVEY OF CUMBERLAND AND HOKE COUNTIES,
NORTH CAROLINA, 1984)
TBL 2-5 (9113/91)
2-16
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The average seasonal snowfall is three inches at Fayetteville and
five inches at Pinehurst. The greatest snow depth at any one time
during the period of record was four inches at Fayetteville and
eight inches at Pinehurst. On an average of one day per year, at
least one inch of snow accumulates on the ground. The number of
such days varies greatly from year to year. Heavy snow may
occasionally cover the ground for a few days to a week.
The average relative humidity in midafternoon is about 60 percent.
Humidity is higher at night, and the average at dawn is about 85
percent. The sun shines 70 percent of the time possible in summer
and 60 percent in winter. The prevailing wind is from the
southwest. Average windspeed is highest, nine miles per hour, in
spring.
2.6.2 Air Quality
In 1989, the North Carolina Department of Environment, Health and
Natural Resources monitored four air quality parameters in
Fayetteville, located approximately 30 miles east of Aberdeen.
These parameters include total suspended particulates (TSP),
particulate matter -10 micrometer (PM-10), carbon monoxide (CO)
and ozone (03 ) •
Table 2-6 lists the values recorded during the year 1989 for TSP,
PM-10, co, and o 3, as well as the National Primary Standards and
the North Carolina standards for these parameters. The National
and North Carolina maximum eight-hour standard of 9 ppm for carbon
monoxide was exceeded one time in 1989 with a recorded value of 9.8
ppm. All of the other parameters monitored in Fayetteville were
within national and State standards.
2.7 Ecological Habitats
2.7.1 Ecological Habitats
A wide variety of vegetation provides food, cover and protection
for the wildlife found in Moore County. The major habitats and
species of wildlife associated with these habitats are summarized
in Table 2-7.
Habitats which attract openland wildlife consist of cropland,
pasture, meadows and areas that are overgrown with grasses, herbs,
shrubs, and vines. These areas produce grain and seed crops,
grasses and legumes and wild herbaceous plants. Wildlife attracted
to openland habitats include quail, dove, fox and rabbit.
Habitats for woodland wildlife consist of deciduous and/or
coniferous plants and associated grasses, legumes, and wild
herbaceous plants. Wildlife associated with these areas include
woodpeckers, squirrel and fox.
2-17
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POLLUTANT
TOTAL SUSPENDED PARTICULATES
Annual Geometric Mean
Maximum 24-hour Value
PARTICULATE MATTER-IO MICROMETER (PM-10)
Annual Arithmetic Mean
Maximum 24-hour Value
CARBON MONOXIDE
Maximum 8-hour Value
Maximum 1-hour Value
OZONE
Maximum 1-hour Value
NOTES:
ug/cu meter -micrograms per cubic meter of air
ppm ~ parts per million
TABLE 2-6
1989 AIR QUALITY DATA
FAYETTEVILLE, NORTH CAROLINA
· .MEASURED
CONCENTRATION
42 ug/cu meter
88 ug/cu meter
29 ug/cu meter
55 ug/cu meter
9.8 ppm
12.0 ppm
0.099 ppm
microgram -one millionth of a gram, where 454 grams• 1 pound
SOURCE EPA AEROMETRIC INFORMATION RETRIEVAL SYSTEM (AIRS) AIR QUALITY SUBSYSTEM
TBL 2-6 (9113/91)
-1/111111! 1111111!1 1/111111! --
..............................
. ..
. ,._.·: ·.•:.
NATIONAL. .
PRIMARY STANDARD .
·.
N,c; STANDARD ._ ...
75 ug/cu meter 75 ug/cu meter
260 uglcu meter 150 ug/cu meter
50 ug/cu meter 50 uglcu meter
150 ug/cu meter 150 ug/cu meter
9ppm 9ppm
35ppm 35 ppm
0.12ppm 0.12 ppm
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TABLE 2-7
MAJOR HABITATS AND ASSOCIATED WILDLIFE
FOUND IN MOORE COUNTY
Corn
Wheat
Oats
Barley
Buckwheat
Soybeans
Sunflowers
Grasses and Legumes
Fescue
Switchgrass
Clover
Bahiagrass
Trefoil
Crownvetch
Wild Herbaceous Plants
Goldenrod
Beggarweed
Partridgegrass
Pokeweed
Hardwood Trees
Oak
Poplar
Sweetgum
Dogwood
Hickory
Blackberry
Blueberry
Longleaf Pine
Coniferous Plants
Pine
Cedar
Wetland Plants
Wild Millet
Rushes
Sidges
Cutgrass
Cattail
Reeds
TBLE 2-7 (9/13/91)
Bobwhite Quail
Mourning Doves
Red Fox
Cottontail Rabbit
Various species of
Songbirds
Woodland Wildlife
Red-Cockaded Woodpecker
Red-Bellied Woodpecker
Fox Squirrel
Gray Fox
Whitetailed Deer
Wetland Wildlife
2-19
Ducks
Muskrat
Raccoon
Red-wing Blackbirds
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Habitats for wetland wildlife consist of ponds, marshes and open
swampy shallow water areas. Wildlife found in such areas are duck,
muskrat, racoon and red-wing blackbirds.
2.7.2 Environmentally Sensitive Areas and Rare/Endangered Species
There are several environmentally sensitive areas containing rare
and/or endangered species in the vicinity of the Site in Aberdeen.
However, it is important to note that the Site has been in
industrial use since the 1950 1 s. The area surrounding the one-acre
site is zoned for commercial use, contains relatively few trees,
borders an active railway and a high-traffic road, and presents
very limited habitat for plants and animals.
The Sand Hills Natural Preserve is a State-owned natural area
located approximately three miles northeast of the Site (Reference
Figure 2-5) and the Paint Hill Area is a Priority Natural Area
located 1-1/4 miles north of the Site. Both areas contain longleaf
pine forests and associated plant and animal communities.
Prior to 1893, the dominant tree type in the Coastal Plain was the
longleaf pine, which once covered an estimated 10 million acres of
eastern North Carolina. By the early 1900's, turpentining and
logging operations had destroyed the last virgin stands of long
leaf pine. Today, second and third-growth longleaf remain in small
isolated pockets of the state.
Many species of plants and animals co-evolved with longleaf
communities and grow nowhere else. The ecological community
depends on periodic fire to maintain their habitats and carry out
their life cycles. The red-cockaded woodpecker, an endangered
species, and the fox squirrel are two of many species of wildlife
to evolve specific adaptations to the fire-dependent longleaf pine
community. Two rare plant species, the Sand Hills Milkweed and the
Wells Tyxie Moss, grow in the Paint Hill Area. In addition, a
species of fish found in Aberdeen Creek, the Sand Hills chub, is
listed as a candidate for federal protection. Other endangered
species in Moore County include the Cape Fear shiner, Rough-leaved
loose strife and Michaux's sumac. American chaffseed, a proposed
candidate for the endangered species list, is also located in Moore
County.
As discussed in section 2.2, a residential property borders the
eastern side of the site and a housing development is located 1/4
mile to the northwest of the site. Other residents near the site
include those northeast of the site along Route 211 and residents
of the farm to the southeast.
2-20
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FIGURE 2-5. LOCATION OF THE SANDHILLS
NATURE PRESERVE
2-21
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3.0 BITE HYDROGEOLOGIC INVESTIGATION
An initial ground water investigation (Phase 2, Step 1) was
conducted at the Site in accordance with the procedures outlined in
Task 12 of the approved RI/FS Work Plan. The purpose of the
initial ground water investigation was to determine the
stratigraphy beneath the site and to characterize the movement and
quality of ground water in the immediate vicinity of the Site. An
exploratory boring (EB-1) was also drilled at the Site prior to the
commencement of monitor well drilling activities. The purpose of
the exploratory boring was to assess the hydrogeologic units
beneath the Site in order to design the monitor wells based upon
site-specific subsurface conditions. The initial ground water
investigation consisted of the drilling, installation, and sampling
of a total of ten ground water monitor wells at the Site.
During the Phase 2, step 1 investigation, six monitor wells (MW-lS
through MW-6S) were screened in the uppermost aquifer beneath the
Site, three monitor wells (MW-1D, MW-4D and MW-6D) were screened in
the second uppermost aquifer and one monitor well (PZ-1) was
screened in the third uppermost aquifer. In addition, physical
laboratory tests were conducted on selected soil samples from the
monitor well borings; and, aquifer tests were performed at each
monitor well location. The locations of the exploratory boring and
the ten monitor wells installed at the Site are depicted in Figure
3-1.
As discussed in Section 3.6, sampling and analysis conducted in
accordance with the Phase 2, step 1 investigation indicated the
presence of pesticides in the uppermost aquifer beneath the Site
and the presence of trichloroethene in two wells (i.e. MW-4D and
MW-6D) screened in the second uppermost aquifer. Based on these
results, an expanded ground water assessment program was
implemented to further characterize the hydrogeologic conditions
and contaminant distribution in the vicinity of the site. The
objectives of the Phase 4, step 2 investigation, as described in
the "Addendum to the RI/FS Work Plan" (12), were to characterize
the lateral extent of pesticides in the shallow aquifer, define
site ground water flow, and assess the lateral continuity of the
uppermost confining layer. As part of the expanded assessment, six
shallow monitoring wells (MW-7S, MW-BS, MW-9S, MW-l0S, MW-12S and
MW-13S) were located in off-site areas downgradient of the existing
monitoring system. In addition, three wells (i.e., MW-11D, MW-14D
and MW-15D) were installed in the intermediate aquifer. The
locations of the Phase 4, Step 2 wells are shown in Figure 3-1.
The following sections provide a description of the methods and
results of the initial ground water investigation conducted at the
Site.
3-1
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WOODS
LEGEND
H\J-12$ 9 UPPERMOST AOUJF'ER l.10NITOR -.VEI...!..
H\J-l!D V
PZ-l ~
SECOND AQUIFER t.lONfTOR WEU.
Tl-!IRO ,l,QUIFER t.40NITOR WEll
WOODS
H\J-7S s
ESiiMA TilJ PROP=TY :;.r1: ~NE
M\J-13S
s
M\J-12S
s
PZ-1
t)
EJ
WOODS
.....
MV-llD v
u
MV-SS s
M'w'-10S
s
i
SCALE• AS SHO\JN
0 40 80 120
3--2
...
~-7-,
f1r4
1/j\
I I I it I I ; '\L__ _ _J
) 'v -----· ----
M\J-!SD
'NOODS
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WOODS
FIGURE 3-1. MONITOR lrEll LOCATIONS
GEIGY CHEMICAL CORPORATION SITE
Al!ERDEEN, NORTH CAROLINA
v ~ :;
ID ERM-soUTHEAST. me
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3.1 General Site Stratigraphy
The stratigraphy beneath the Site was determined based upon
lithologic samples collected during the drilling of the exploratory
boring and monitor well borings. Detailed drilling logs for each
boring completed as part of the ground water investigation are
presented in Appendix 3-A.
The stratigraphy beneath the Site is depicted in two geologic cross
sections A-A' and B-B'. The locations of the cross sections are
presented in Figure 3-2 and the individual cross sections, A-A' and
B-B', are presented in Figures 3-3 and 3-4, respectively. Geologic
cross-section A-A' is an east to west trending profile extending
from the City of Aberdeen Municipal Supply Well #4 (MUW-04)
eastward to monitor well MW-15D. No detailed drilling logs are
available for MUW-04. The stratigraphy in the vicinity of
municipal well MUW-04 was, therefore, interpreted and correlated
with the strata beneath the Site based upon drilling and
geophysical logs from the United states Geologic Survey (USGS)
piezometer well cluster GS-02, which is located approximately 130
feet east of MUW-04 (see Figure 3-1). The USGS piezometers were
installed in 1990 as part of an on-going aquifer study being
conducted in the Aberdeen, NC area by the USEPA. Information
obtained from the USGS concerning well cluster GS-02, as well as
other USGS well clusters in the near vicinity of the Site, is
presented in Appendix 3-B. Geologic cross section B-B' is a
southwest to northeast trending profile extending from monitor well
MW-11D northeastward to monitor well MW-as.
The stratigraphy beneath the site generally consists of a series of
relatively permeable silty, clayey and gravelly sands separated by
relatively low permeability sandy and silty clay confining layers.
The maximum depth of strata which were drilled and sampled beneath
the Site is 185 feet (EB-1), corresponding to an approximate mean
sea level elevation of 295 feet. This elevation is equivalent to
the total depth elevation of Aberdeen municipal well MUW-04.
Three distinct permeable sand units and three distinct low
permeability clay confining layers were identified in the strata
encountered beneath the Site. since each of the permeable sand
units apparently acts as a distinct hydrogeologic unit, each unit
and corresponding confining layer was given a name designation
based upon the depth within the stratigraphic profile. The sand
units were labelled, in order of descending depth, the uppermost
aquifer (referred to as the first aquifer), second uppermost
aquifer (second aquifer), and third uppermost aquifer (third
aquifer). Similarly, the confining layers were labelled, in order
of descending depth, the uppermost confining layer (first confining
layer), second uppermost confining layer (second confining layer)
and the third uppermost confining layer (third confining layer).
The strata beneath the site to which each of these labels
corresponds is depicted in geologic cross-section A-A' and B-B'
(Figure 3-3 and Figure 3-4).
3-3
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WOODS
L~GEND
GS-02-2
GS-□2-1
M'J-12S S UPPERt.40ST AOUIFE..=t \ACNITOR ilifil
H\J-110-$-SECOND AQUIFER MONITOR WELL
P Z -1 ~ THIRD AOUIF'"uf \4CNITOR WE!.l.
WOODS
1"1\./-7S ..
Mv-:.2s
s
PZ-!
EJ
WOODS
-----
40
B /
S::AL.Er AS SHO\JN
40 ao :2a
□
'
'"" ...
M\J-5S
MV-lOS ..
3-4
WOODS
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FIGURE 3-2. LOCATIONS OF HYDROGEOLOGIC
PROFILES A -A' AND B -B'
GEIGY CHEJ4JCAL CORPORATION SITE
ABERDEEN, NORTH CAROLINA
l1filJ ERM-SOUTHEAST, INC
.. -

-

-
-l!!!!!ll .. -l!!!l!!!I -.. l!!!!!!I --.. --

-

-
450-!
430 C
I
I 410-,
J 400 ~ V1 ' ::i;
I t;: J90
~
I
I J80
I 340
I J20
I J10
JOO
I 290
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.. ··""'··
·-..
~ ---=------·············~· ..........
......
.......
............ ····· .. .. ·...:. .
RR
ON-SITE\ WATER SUPPLY WELL
.. ,.,, ____ --· -~-....... --.. ~ :1?J2,2: ~ . -_ .. ~ ,j -
... ·•·
EAST
A'
MW-150
I .. ·• ....... •-. ·:::: ·:
- ---~ --= ---~---~-:w;.:,:.;;j:~ ~~~~~~~~~~-;-,-_7'_~_ -cc'--~--7'-cc-4j~~-~~~=cc-~--~------~ '--""'~ ~
.-.-.-.-.-._·::.-.... --~-----.... ·•· . .-:.-:.-.-.-.-.. -. :.·.-. . ·•·. _._._.._. .. ·•· .. ·•::......... . . . . . . .. . . .•. .........•... -. .... . .... .
_-_-_"!'. . .. . COt,lp,tCJ GRA\6...1:.'I' WEBI.. .. .......... ·• .. <::::::~::~::~:::::::::::f.. . . . ·---~--~::.::.-.-:.-:~.--····· ..... ······f·"··········
. . -·.·(:. -. . . . _-_-_-_·•.-.
·.T.
............ -·-. -.· ....... -·. .. . . . .
.... •·.
. .........•.
. ....•.. . .......•. .........
90
480
470
480
450
4-<0
430
420
410
~
400 ...J VI :::.
390 t ~
z
J80 0 ~ 370 uJ
J80
350
J<-0
lJO
J20
310
JOO ~~~~5;-=1=-=-=-=1=-=-~~-=-=-=-~-------=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=~:~-----.: __ ~-v~=-------------
~---7 ----(~~~~1-~-:::-:~-~
2
(~~~ -_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_-_~_-:_~_-_-_-_-_-_-_---~----_-_-_-_-_-_-_-_-_-_-_-_-_ 290
1 Ttl•157" W'El..L TOTAL OEP'Tll
0 1 60' 320' 4-80' ,---------;-:=.. ___ ..:;.=-=------i
HORIZONTAL SCALE IN FE~
■SIRRINE ENVIRONMENTAL CONSULTANTS ---
3-5
FIGURE 3-3
HYDROGEOLOGIC PROFILE A-A.'
GEIGY CHEMICAL CORPORATION SiTE
ABERDEEN, NORTH CAROLINA
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1:
ll
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SW
B MW-110
.·.·.·.·••• .. ••••·•l· . . . . . . . . . l . .... ·.·.·.·.·.·•• r ....
.. . . !
. -·I· ... r . -t·
..... ·-·.
_·_:...._-_-_-_-_-:-sn:r-~.--·
..... ~ . .... -. ~ . . . . . . . . . . ,, .
. --.
.. -........ /. -.
. . . . ,... .
..... -·
HWY. 211 MW-2S
MW-60
MW-6S '.
R.R.
. ---. . · LOOSE. 'To iiEiJiui,j . . · · · · ;..· · · COIIPICI · SltJY· AND ·
. """'.
. . . -· .. . . . : C!AYEY . FJNE TO . . .
· · · CGN!SE> SNID ·
.........
. MEDIUM. ailiP..lct. Tb ..
· · COIIPICI· SltJY· N<D · · ·. i CUID.FJNE·ro: ... . . ~.SANO .
I_EGEND
429-4~:iz SiATIC WATER ~/EL I SCREE:-JEO INTERVAL
419.4. WITH EL..CVATIONS
ID=55.5'-WELL TOTAL DEPTH
. ......
0 60' 120' 180'
MW-9S
-. .... ,...
. . . . . . . . . UP0 ::i<MOST
··· · · · · · · · · · :AOUlfcR
-~-..... -.
. . . _...,. . ........
NE
B'
480
470
460
450
440
' ~· _J'
430 ~ I
t
420 ;:
o; ~:
... 410 G'.i
~400
-390
-380
'-370
~360
-350
_J w
-;_I----~-'------.-=,'-----'!
HORIZONTAL SCA~E lei ,::::T ■SIRRINE ■ ENVIRONME."ITAL
CONSULTANTS
FIGURE 3-4
HYDROGEOLOGIC PROFILE B-B'
.---~-GEIGY CHE'AICAL CORPORATION SITE
ABERDE::N, NORTrl CAROLINA
3-6
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Based upon information in Winner and Coble ( 9) and the USGS'
preliminary interpretation of the strata at well cluster GS-02
(Coble (13)), each of the hydrogeologic units encountered beneath
the Site was correlated with a specific hydrogeologic unit and
geologic formation present in the Coastal Plain region of North
Carolina. The correlation of the units beneath the Site with the
regional geologic and hydrogeologic framework of the North Carolina
Coastal Plain is presented in Table 3-1.
The uppermost aquifer at the Site is interpreted to be part of the
undifferentiated surficial sands, which comprise the surficial
aquifer in the Coastal Plain of North Carolina. These surficial
sands are generally considered to be Tertiary-age deposits in the
Sand Hills region. As indicated in Table 3-1, the base of the
uppermost aquifer may also include the uppermost sediments of the
Middendorf Formation of Cretaceous age. The surficial sands of the
Sand Hills region are generally dif.ficult to distinguish from the
Middendorf sands due to their similar character (Coble(13)).
All of the strata encountered at the Site below the surficial sands
are interpreted to be Cretaceous-aged sediments of the Middendorf
Formation. Winner and Coble (9) define the Black Creek confining
unit as the first clay bed near the top of the Middendorf
Formation. Therefore, the uppermost confining layer at the Site is
interpreted to be the Black Creek confining unit. In the Sand
Hills region of North Carolina, the Black Creek aquifer lies
between the Black Creek confining unit and the Upper Cape Fear
confining unit. The second aquifer, second confining layer and
third aquifer present at the Site are all interpreted to be part of
the Black Creek aquifer. The deepest sediments encountered beneath
the Site, designated the third confining layer, are interpreted to
be the upper portion of the Upper Cape Fear confining unit.
A detailed description of each of the aquifers encountered beneath
the site and their corresponding underlying confining layers is
presented in the following sections.
3.2 Site Hydrogeoloqic Units
3.2.1 Uppermost Aquifer
The uppermost aquifer at the site extends from the ground surface
to the top of the first confining layer (see Figure 3-3). The
uppermost aquifer is approximately 63 feet thick at the eastern end
of the Site and thins with the topographic slope to a thickness of
approximately 40 feet near the western end of the Site.
The uppermost aquifer is primarily composed of loose to medium
compact, mottled, multi-color (primarily tan, pink, white, brown,
rust and purple) silty and clayey sands. Based upon visual
observation of soil cores, the total silt and clay content in this
unit ranges from 10% to 40%. The sand is generally poorly sorted,
fine to coarse-grained and subangular to subrounded in shape. Thin
clay layers (up to 1/2" in thickness), pebbles, and layers up to
3-7
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TABLE 3-1
Relationship of the Site Hydrogeologic Units with
the Regional Hydrogeologic and Geologic Framework of
the North Carolina Coastal Plain (1)
UPPERMOST AQUIFER
UPPERMOST CONFINING
LAYER
SECOND UPPERMOST
AQUIFER
SECOND UPPERMOST
CONFINING LAYER
THIRD UPPERMOST
AQUIFER
THIRD UPPERMOST
CONFINING LAYER
NOTE:
SURFICIAL AQUIFER
BLACK CREEK
CONFINING UNIT
BLACK CREEK
AQUIFER
UPPER CAPE FEAR
CONFINING UNIT
(1) Correlation of regional hydrogeologic units and geologic
formations with the site hydrogeologic units is based upon information
from Winner &nd Coble (1989) and Coble (1991).
TBL 3-1 (9118/91)
3-8
UNDIFFERENTIATED
SURFICIAL SANDS
MIDDENDORF
FORMATION
(ON-SHORE FACIES
OF BLACK CREEK
FORMATION)
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two inches thick of hematite-cemented sandstone occur locally
throughout the uppermost aquifer.
A shallow, relatively thin, slightly sandy clay layer is present in
the uppermost aquifer extending from the middle portion of the Site
westward toward well MW-3S. This thin clay layer is three to five
feet thick and was encountered at a depth of approximately 15 feet
below ground level at MW-2S, MW-3S, well pair MW-6S and MW-6D, and
PZ-1.
A thin sandy clay layer was also noted in the uppermost aquifer in
the far eastern portion of the Site at well pair MW-lS and MW-1D
and EB-1. This clay layer is approximately two to three feet thick
and is present at a depth of approximately 42 to 45 feet below
ground level.
Sands with relatively little or no silt or clay content were noted
at the base of the uppermost aquifer at monitor well locations MW-
lS, 2S and 6S. These relatively coarser sands are approximately
five to seven feet thick.
Ground water within the uppermost aquifer occurs under water table
or unconfined conditions. Saturated soils in the first aquifer
were encountered at approximate depths of 45 feet (MW-lS) to 35
feet (MW-3S and MW-4S) below ground level beneath the Site.
Ground water elevation data collected from the Site monitor wells
from the period October 1990 to February 1991 (Phase 1, Step 2
Investigation) and from the period July 1991 to August 1991 (Phase
4, Step 2 investigation) are presented in Table 3-2. It should be
noted that monitor wells MW-lS through MW-13S are all screened in
the uppermost aquifer at the Site. A ground water elevation map
for the uppermost aquifer, constructed from water level
measurements obtained July 8, 1991 is presented in Figure 3-5. The
ground water elevation contour ·map considers the fundamental
hydrogeologic premise that the water level contour pattern of
shallow unconfined ground water flow in small drainage basins is a
subtle replica of the topography (Toth (14), Toth (15); NRCD (11)).
As illustrated in Figure 3-5, ground water flow in the uppermost
aquifer appears to be controlled by the presence of recharge areas
located at the eastern and western ends of the Site, and by the
presence of moderate topographic slopes on the northern and
southern sides of the Site. Potentiometric data from the shallow
monitor wells indicate that ground water flow from the eastern and
western portions of the Site meet in an elongated zone of
convergence which bisects the Site. The axis of the convergence
zone approximately follows a line extending through monitor wells
MW-BS, PZ-1, and MW-12S, and to the southwest along the center of
a small drainage basin. This convergence zone is in turn bisected
by a hydraulic divide which occurs in the vicinity of monitor well
MW-12S.
3-9
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TABLE 3-2
GROUND WATER ELEVATION DATA
GEIGY CHEMICAL CORPORATION SITE
ABERDEEN, NORTH CAROLINA
W• B~l;iif!t~Jrvvg~ti P~I5 ~:::;~~~~~ ~0~1~~~t0:I ~v~;~~!~~rATION
11-6-90 48.05 435.99
11-7-90 48.00 436.04
11-9-90 47.88 436.16
11-13-90 47.96 436.08
12-12-90 47.87 436.17
1-4-91 48.09 435.95
2-6-91 48.24 435.80
7-8-91 46.56 437.48
8-21-91 46.54 437.50
MW-10 484.83 10-30-90 85.73 399.10
11-6-90 85.73 399.10
11-7-90 85.90 398.93
11-9-90 90.21
11-13-90 86.08 398.75
12-12-90 85.98 398.85
1-4-91 86.08 398.75
2-6-91 86.03 398.80
7-8-91 85.64 399.19
8-21-91 86.11 398.72
~::::,: ... ·•:':-:,-·:
MW-2S 475.52
···•· ·•···· ...
10-29-80 50.02 425.50
11-6-90 50.94 424.58
11-7-90 49.90 425.62
11-9-90 49.86 425.66
11-13-90 49.84 425.68
12-12-90 49.71 425.81
1-4-91 49.93 425.59
2-6-91 49.89 425.63
7-8-91 48.49 427.03
8-21-91 ~ 10-29-90 38.69 MW-3S 462.26
427.04
423.57
11-6-90 38.67 423.59
11-7-90 38.65 423.61
11-9-90 38.62 423.64
11-13-90 38.60 423.66
12-12-90 38.38 423.88
1 -4-91 38.49 423.77
2-6-91 38.40 423.86
7-8-91 36.97 425.29
8-21-91 37.01 425.25
•··•
MW-4S 473.47 10-30-90 38.44 435.03
11-6-90 38.25 435.22
11-7-90 38.20 435.27
11-9-90 38.12 435.35
11-13-90 38.18 435.29
12-12-90 38.03 435.44
1 -4-91 38.39 435.08
2-6-91 38.56 434.91
7-8-91 36.94 436.53
8-21-91 36.80 436.67
3-10
TBL 3-2 (9/18/91)
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WELL
. .
MW-4D
MW-5S
MW-6S
MW-6D
TBL 3-2 (9/18191)
TABLE 3-2 (cont)
GROUND WATER ELEVATION DATA
GEIGY CHEMICAL CORPORATION SITE
ABERDEEN, NORTH CAROLINA
TOP OF CASING ELEVATION DATE OF MEASUREMENT DEPTH TO WATER . WATER LEVEL ELEVATION
(It. msl) ·. .. >:I." ·· .. :.:: , .. :. · (ft; below toe). ·,,-:·,, . .-., .. .. · 'tit. msl)/ ..
473.99 10-29-90 75.43 398.56
11-6-90 75.25 398.74
11-7-90 75.40 398.59
11-9-90 75.32 398.67
11-13-90 75.54 398.45
12-12-90 75.37 398.62
1-4-91 75.67 398.32
2-6-91 75.54 398.45
7-8-91 75.09 398.90
8-21-91 75.44 398.55
. . -.-.--, . . :'.' ... .-., •,-••::·.-:-',:>:: . . ·r.-. .. -: i 'f ~ :· -·:: .. ,-.,i.,,, ... ·· : ,, .
471.34 10-30-90 40.32 431.02
11-6-90 40.15 431.19
11-7-90 40.15 431.19
11-9-90 40.11 431.23
11-13-90 40.10 431.24
12-12-90 40.04 431.30
1-4-91 40.28 431.06
2-6-91 40.42 430.92
7-8-91 38.67 432.67
8-21-91 38.60 432.74
. ',, ..
464.71 10-29-90 41.55 423.16
11-6-90 41.50 423.21
11-7-90 41.50 423.21
11-9-90 41.47 423.24
11-13-90 41.43 423.28
12-12-90 41.28 423.43
1-4-91 41.44 423.27
2-6-91 41.44 423.27
7-8-91 40.12 424.59
8-21-91 40.15 424.56
465.49 10-29-90 68.85 396.64
11-6-90 68.75 396.74
11-7-90 68.92 396.57
11-9-90 73.21 --
11-13-90 68.98 396.51
12-12-90 68.85 396.64
1-4-91 69.03 396.46
2-6-91 68.51 396.98
7-8-91 68.36 397.13
8-21-91 68.78 396.71
3-11
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TABLE 3-2 (cont)
GROUND WATER ELEVATION DATA
GEIGY CHEMICAL CORPORATION SITE
ABERDEEN, NORTH CAROLINA
WELL TOP OF CASING ELEVATION
(tt. msl)
DATE OF MEASUREMENT . DEPTH TO WATER. ... • ..... •·:':;l'•/i.(tt.belowtoc) ,i,
PZ-1
. . . .,-.. _. ., . •'•, ..
MW-7S
..
MW-BS
MW-9S
MW-10S
.
MW-12S
•
MW-13S
.
MW-11D
MW-14D
MW-15D
GS-02-03
NOTES.
TOC • TOP OF CASING
MSL • MEAN SEA LEVEL
465.65
.
451.89
.. ,
462.72
-.·
471.71
461.48
447.33
449.74
463.41
486.87
491.03
454.54
WSW• ON-SITE WATER SUPPLY WELL
·:·"
.
--• INSTRUMENT ERROR. NO DATA COLLECTED
GS-02-03 • USGS WELL
TBL 3-2 (9/18/91)
10-29-90 71.86
11-7-90 70.85
11-9-90 70.81
11-13-90 70.88
12-12-90 70.77
,_ 4-91 70.95
2-6-91 70. 73
7-8-91 70.39
8-21-91 70.73
7 -8-91 22.84
8-21-91 22.36 ..
7 -8-91 37.10
8-21-91 38.60
7 -8-91 41.90
8-21-91 42.11
7 -8-91 28.95
8-21-91 29.11
7 -8-91 19.56
8-21-91 19.53
..
7 -8-91 18.41
8-21-91 17.86
7 -8-91 65.27
8-21-91 65.69
7 -8-91 87.00
8-21-91 87.30
7 -8-91 91.25
8-21-91 92.12
7-10-91 20.01
3-12
WATER LEVEL ELEVATION
· ··· •.•. :-; (IL msl) }L it>
393.79
394.80
394.84 394.n
394.88
394.70
394.92
395.26
394.92
429.05
429.53
425.62
424.12
429.81
429.60
432.53
432.37
427.n
427.80
•'• . ., . . . .... . .
431.33
431.88
., ... .··:C::
398.14
397.72
• •
399.87
399.57
..
399.78
398.91
434.53
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NOTE:
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c;,J
428
LEGEND
PAVED ROAD
DIRT ROAD
FWLROAD
FENCE
PROPERTY UNE
TREE LINE
=====
LONE TREE 0
1NDEX CONTOUR -0-
INTERMEDIATE CONTOUR --
GROUND WATER 0£VAT10N --
ELEVATION CONTOUR (MSL)
DASHED WHERE INFERRED
POWER POLE
SiGN
POST
FlRE HYORA."fl
CONTROL P'JINT
IRON PIN
LABE1..£D ITEM
SPOT El...EVATION
UONITOR WEli. WITH
WELL ID AND
WATER L£VEL (MSL)
DIRECTION OF GROUND
WATER FLOW
•
-
AN ..accuRATE WATER L£VEl. MEASUREMENT COULD NOT BE OBT.AJNED AT MONITOR Wfil 8S
426 ,,,.------
'4-3:-co~· 428 \
.,
WITH A DEFTH-TO-'NA"TER: ELECTRODE APPARENTLY DUE TO THE LON CONDUCTIVITY OF THE GROUND WATER.
0 ., ""
SCALE: AS SHOWH
71117~:;
N
F1GURE 3-5 GROUND WATER ELEVATION MAP
lJPPERMOST AQUIFER, JULY 8, 1991
GEIGY CHEMICAL CORPORATION SITE
ABERDEEN, NORTH CAROIJNA
00G) ERM-SOUTHEAST, INC
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For the area east of the convergence zone, ground water in the
uppermost aquifer predominantly flows to the west and northwest and
is believed to receive recharge in the relatively flat lying area
which lies between Highway 211 to the north, the Aberdeen and
Rockfish Railroad line to the south, and a dirt gravel road to the
west. The eastern limit of this local recharge area is beyond the
area of this investigation and has not been specifically located.
The hydraulic gradient in the uppermost aquifer across the eastern
portion of the site, as measured between monitor wells MW-4S and
MW-6S, is 0.026 ft/ft (2.6%). Similarly, for the area west of the
convergence zone, ground water in the uppermost aquifer
predominantly flows to the east-southeast and is believed to
receive recharge in the flat lying area located near city well MUW-
04. The hydraulic gradient in the uppermost aquifer across the
western portion of the site, as measured along a line trending from
USGS well cluster GS-02 to MW-3S, is 0.017 ft/ft (1.7%). The
hydraulic gradient within the convergence zone, as measured from
monitor well MW-12S northward to MW-BS for the August 1991 gauging
event is calculated to be 0.0076 ft/ft (0.76%). The July 1991
gauging data was not utilized to calculate the hydraulic gradient
within the convergence zone due to the fact that an accurate water
level measurement could not be obtained at MW-8S with a depth to
water electrode apparently due to the low specific conductance of
the ground water at this location.
As ground water flow approaches the convergence zone, the hydraulic
gradient exhibited by the uppermost aquifer substantially decreases
and the direction of ground water flow from the eastern and western
portions of the Site is re-directed to either the north or to the
southwest. The direction in which ground water flow is re-directed
is dependent on the location of a given flow path with respect to
the hydraulic divide which transects the convergence zone.
Accordingly, for the area north of a line extending through USGS
well cluster GS-02 and wells MW-13S, MW-12S and MW-11D, ground
water flow appears to be re-directed to the north and to exit the
Site in the vicinity of MW-BS. Ground water flow south of this
divide appears to be re-directed to the southwest, where it follows
the course of a small drainage basin.
Beneath the facility property, the uppermost aquifer is underlain
by the uppermost confining layer (see Figure 3-3 and Figure 3-4).
As indicated in the drilling logs of the monitor well and
exploratory borings, the uppermost confining layer is interpreted
to be present across the facility property, however, the lateral
continuity of this layer south of the property is uncertain. Based
upon the geophysical logs of USGS well cluster GS-02 and the
drilling logs of the installed off-site monitor wells, the
uppermost confining layer is also interpreted to extend north,
south and west of the Site. In addition, a review of the
geophysical logs of other USGS well clusters in the vicinity of the
Site indicates that the uppermost confining layer appears to be
present beneath most of the higher elevation areas (above
approximately 420 ft. msl) in the region surrounding the Site.
However, based on the elevation of the confining layer beneath the
3-14
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site and elevations indicated on the topographic map of the area
(Figure 2-1), it appears that this confining layer may outcrop in
the valley created by Aberdeen Creek at a distance approximately
2,000 feet west of the Site. The location of the other USGS well
clusters in the vicinity of the Site and their corresponding
geophysical logs are presented in Appendix 3-B. The area-wide
existence of the uppermost confining layer is consistent with the
interpretation of this layer as the Black Creek confining unit.
The uppermost confining layer beneath the Site is a very stiff, tan
slightly sandy clay. The sand content in the uppermost confining
layer ranged from 10% near the top of the layer to 30% near the
base. The sand grain size generally increased downward from very
fine-grained in the upper portion to medium-grained at the base.
Laboratory tests of two samples collected from the uppermost
confining layer (i.e. borings MW-1D and MW-5S) indicated a
permeability on the order of 10·8 cm/sec (see Section 3.4.2).
Drilling logs indicate that for the area immediately underlying the
facility property, the thickness of the uppermost confining layer
ranges from approximately 6 to 20 feet. As illustrated in cross
section A-A' (Figure 3-3), the thickness of the uppermost confining
layer near the eastern edge of the facility property is
approximately 20 feet (wells MW-14D and MW-15D), thins to
approximately 6 feet near the center of the property (well pair MW-
6S and MW-6D), and is believed to increase to approximately 10 feet
in thickness near the western tip of the property (well MW-13S).
The thickness of the uppermost confining layer at the western edge
of the Site can only be inferred as the confining layer was not
penetrated at well location MW-3S, MW-7S, MW-12S, or MW-13S.
However, based upon the geophysical log at USGS well cluster GS-02,
the uppermost confining layer is inferred to have an approximate
thickness of 10 feet near city Well MUW-04.
Split spoon samples collected during the drilling and installation
of monitor well MW-11D, located approximately 360 feet south of the
site, indicate that the thickness of the uppermost confining layer
at this location thins to approximately one foot. The thickness of
the uppermost confining layer at well MW-lOS, which lies mid-way
between MW-110 and the location of former Warehouse A, is unknown. ,,
A contour map of the upper contact of the uppermost confining layer
(Figure 3-6) indicates that the surface of the clay layer is
undulatory and exhibits a depression in the vicinity of well MW-6S
and MW-6D. The presence of a lens of well sorted, coarse to very
coarse sand on top of this contact at well pair MW-6S and MW-6D and
MW-2S suggest that the surface of the uppermost confining unit may
have undergone local scouring during the deposition of the
overlying sands.
3.2.2 Second Uppermost Aquifer
The second uppermost aquifer at the Site extends from the base of
the uppermost confining layer to the top of the second uppermost
3-15
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■SIRRINE ENVlRO NMENT.11-L CONSULTANTS
FIGURE 3-6 EL..'VATION OF UPPERMOS,
CONFINING LAYER
GEIGY CHEMJCAL CORPORATION SITE
ABER□E~, NORTH CAROLINA
. '
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confining layer (see Figure 3-3) and is approximately 40 feet in
thickness. The second aquifer is generally composed of medium
compact to compact, multi-color (purple, yellow, tan, pink and
gray) silty and clayey sands. Based upon visual observations of
soil cores, the total silt and clay content in the second aquifer
ranges from approximately 20% to 40%. The sand in the aquifer is
generally fine to coarse-grained and subrounded to subangular in
shape.
Thin clay layers (up to two inches in thickness), gently dipping
laminations (up to 10°), hematite-cemented sandstone layers and
pebbles occur locally throughout the second aquifer. The bottom
seven to eight feet of the second aquifer is composed of medium
compact, silty fine to coarse sands. Silt content in this lower
zone is approximately 30%.
An approximate two-foot thick lens of sandy clay was noted in the
second aquifer at monitor well location MW-1D only, at a depth of
82 feet below ground level. A compact, gravelly coarse to very
coarse sand layer is also present beneath the far eastern portion
of the Site in the second aquifer (see Figure 3-3). The coarse
layer was encountered at well locations MW-1D, MW-4D and EB-1.
This layer is approximately eight feet thick and occurs at a depth
of approximately 85 to 90 feet below ground level.
Saturated conditions within the second aquifer were found to occur
at depths ranging from 100 feet (MW-15D) to 67 feet (MW-6D) below
ground level. This ind•icates that ground water within the second
aquifer occurs at a depth of approximately 3-15 feet below the base
of the overlying uppermost confining layer, which was confirmed by
ground water level measurements from the Site monitor wells
screened in the second aquifer. Ground water elevation data for
the monitor wells screened in the second aquifer (MW-1D, MW-4D, MW-
6D, MW-11D, MW-14D and MW-15D) are presented in Table 3-2.
A ground water elevation contour map for the second aquifer,
constructed from water level measurements obtained July 8, 1991 is
presented in Figure 3-7. The ground water elevation map was
constructed based upon triangulation of the ground water elevation
data from the six monitor wells screened in the second aquifer.
The ground water elevation data indicate that the direction of
ground water flow within the second aquifer is toward the west-
northwest. In order to investigate the variability of flow
direction within the second aquifer, the direction of ground water
flow was determined for each of the ground water measurement events
completed from October 1990 to February 1991 and July 1991. (Table
3-2). The ground water elevation data indicate that the ground
water flow during this period ranged from a west to northwest
direction. The average hydraulic gradient for the second aquifer
was calculated to be 0.003 ft/ft (0.3%), as measured between MW-14D
and MW-6D.
3-17
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3-18
FIGURE 3-7 GROUND. lfATE:'-ELEVATION MAP-
SECOND UPPE:'-MOST AQUIFER
GOG!' CHEMICAi. CORPORATION SITE
ABEROES'-l. NORTH CAROLINA
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Ground water elevation data was also collected February 6, 1991
concurrently from the on-Site Phase 2, Step 1 monitor wells (Table
3-2) and USGS wells screened in the equivalent elevation as that of
the second aquifer (Appendix 3-B). The data confirm that the
overall direction of flow in the second aquifer is generally in a
northwesterly direction.
Because the second uppermost aquifer is located between two
confining layers, ground water in the second aquifer would be
expected to occur under confined conditions. Under normal
conditions, saturated deposits within a confined aquifer would be
expected to occur immediately below the base of the upper confining
layer. In addition, the water level elevation, as determined from
an observation well in the confined aquifer, would be expected to
rise above the base of the confining layer overlying the confined
aquifer. This is due to the existence of overlying impermeable
strata creating hydrostatic pressure within the aquifer which is
greater than atmospheric pressure. As noted previously, however,
saturated deposits and the water level elevation within the second
aquifer were determined to be at a depth of approximately 15 feet
below the base of the overlying confining layer. This condition
may be attributed to several factors or a combination of factors as
discussed below.
Winner and Coble (9), in their study of the hydrogeologic framework
of the North Carolina Coastal Plain, indicate that this condition
exists throughout the Sand Hills region. They note that, because
of the dissected nature of the Sand Hills, the Middendorf clays
that serve as the confining unit are cut through in many places by
stream channels. Where this occurs, the Black Creek aquifer
discharges to the streams and, therefore, may only be confined
beneath hilltops. The inferred outcrop area of the second
uppermost aquifer, based upon the elevations of the aquifer
boundaries beneath the Site, is· presented in Figure 3-8. As
depicted in Figure 3-8, the valley through which Aberdeen Creek
flows cuts through the second uppermost aquifer at a distance
approximately 2,000-3,000 feet west of the site. At this point,
the second uppermost aquifer beneath the Site would become a water
table aquifer. Therefore, it is probable that the second aquifer
is exhibiting unconfined conditions beneath the Site due to its
proximity to the outcrop of the aquifer to the west.
As noted previously, based upon the elevations of the boundaries of
the second uppermost aquifer beneath the Site, the valley through
which Aberdeen Creek flows cuts through the entire thickness of the
second aquifer. The projected outcrop area of the second aquifer
west of the Site is depicted in Figure 3-8. As seen in Figure 3-8,
the base of the second aquifer is located at an elevation
approximately 40 feet above the elevation of Aberdeen Creek, and,
therefore, is not directly hydraulically connected to Aberdeen
Creek. Rather, ground water from the second aquifer beneath the
Site apparently discharges to small streams to the west which then
flow in a westerly direction toward Aberdeen creek.
3-19
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, , ·i' ,,
rl/.~;f~-
/ ,
. ~.. .
--------··. • ·._.:.:.:'.J:I ....
0 2000
SCALE IN FEET
. :i~-~ .•~.
~~-·•
-'•"" .--
• ~• I " _: (,~/ ."L
,~..\: i<.. \(;t---. V
. 1(\.~-\))~ -/.tA-~--:.-~
GENERALIZED FLOW
DIRECTION IN SECOND
UPPERMOST AQUIFER
BENEATH SITE
ADAPTED FROM USGS SOUTHERN PINES AND PINEBWFF, NC TOPOGRAPHIC QUADRANGLE
FIGURE 3-8. INFERRED OUTCROP AREA OF
SITE SECOND UPPERMOST AQUIFER WEST
OF GEIGY CHEMICAL CORPORATION SITE,
ABERDEEN, NC.
3-20
r~ ERM-Southeast, Inc.
~ Environmental R11ocnc11 Hanag,mtnt
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Based upon the reported screen elevations of MUW-04 (see Figure 3-
3) and other City of Aberdeen municipal supply wells, the Site's
second uppermost aquifer is utilized as a local source of potable
water. Construction details (i.e., screen intervals) of private
water supply wells in the vicinity of the Site are not known.
However, the total depth of the private wells in the area indicate
that the second aquifer is the primary production zone for the
private wells. The site uppermost aquifer is not considered to be
an important source due to its limited saturated thickness. In
addition, none of the municipal wells are known to be screened in
the uppermost aquifer.
Beneath the Site, the second aquifer is underlain by the second
uppermost confining layer, as depicted in Figure 3-3 and Figure 3-
4. The second confining layer was encountered at MW-4D, MW-6D and
EB-1. As indicated in the Site drilling logs and geophysical logs
of USGS well cluster GS-02 (Appendix 3-B), the second confining
layer is interpreted to be continuous beneath the Site, extending
to at least Aberdeen City Well MUW-04. In addition, an analysis of
the geophysical logs of other USGS well clusters in the vicinity of
the Site (Appendix 3-B) indicates that the second confining layer
is present throughout the region near the Site.
The second confining layer is generally composed of very stiff,
mottled gray, tan and red silty clay. Some minor sand clay zones
with approximately 10% fine to medium sand were noted in the upper
portion of the confining layer. The confining layer apparently
coarsens downward with sandy clay being present at the base of the
confining layer. An attempt was made to collect soil samples from
borings MW-4D and MW-6D for permeability testing. However, due to
the extreme hardness of the confining layer, the Shelby tube could
not be pushed to an adequate depth into the layer to collect a
sample.
Based upon the drilling and sampling of exploratory boring EB-1 and
monitor well PZ-1, the thickness of the second confining layer was
determined to be approximately 10 to 13 feet beneath the site. In
addition, an analysis of the geophysical logs from USGS well
cluster GS-02, indicates the thickness of the second confining
layer near MUW-04 is approximately 10 feet.
3.2.3 Third Uppermost Aquifer
The third uppermost aquifer at the Site extends from the base of
the second confining layer to the top of the third uppermost
confining layer (see Figure 3-3). The third aquifer beneath the
Site is approximately 60 feet in thickness as indicated by the
drilling log of EB-1.
Based on the drilling and sampling of PZ-1 and EB-1, the upper 30
feet of the aquifer is generally composed of compact, multi-color
(tan, white, red and purple) silty sand. The sand in the upper
zone is primarily medium to coarse-grained and subrounded in shape.
Thin seams of silty and sandy clay were noted to be present
3-21
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throughout this upper zone. The lower 30 feet of the third aquifer
was drilled and sampled at EB-1 only, where it is generally
composed of compact, multi-color (tan, white, rust and purple)
gravelly sand. Sand within this lower zone is primarily medium to
coarse-grained with the gravel size ranging up to 1/2" in diameter.
Some thin clay and silt seams are present in this lower zone.
Ground water in the third aquifer occurs under confined conditions.
Saturated deposits were noted immediately below the base of the
second confining layer and the piezometric head in the only monitor
well screened in this aquifer, PZ-1, rose approximately 40 feet
above the base of the second confining layer. The depth to ground
water in monitor well PZ-1 was determined to be approximately 68
feet below ground level. Water level measurements completed from
monitor well PZ-1 are presented in Table 3-2. The single monitor
well screened in the third aquifer did not allow for determination
of ground water flow direction or hydraulic gradient in this
aquifer. However, water level data collected February 6, 1991
concurrently from PZ-1 (Table 3-2) and USGS cluster wells screened
at the approximate equivalent elevation as the third aquifer
(Appendix 3-B) indicate that the overall direction of flow is
generally toward the northwest.
It should be noted that, based upon the screen intervals of
Aberdeen City Well MUW-04, the third aquifer beneath the Site is
interpreted to be the equivalent of the primary production zone
(screened interval) of MUW-04. The screen interval elevations of
MUW-04 are presented in Figure 3-3. In addition, it is believed
that the on-site water supply well (WSW), located at the east end
of former Warehouse A (see Figures 3-1 and 3-3), may also be
screened in the third aquifer. This interpretation is based upon
a knowledge of the depth of the on-site water well (determined to
be approximately 140 feet below ground level) and the level of the
pump setting in the well (approximately 126 feet below ground
level). The exact screen interval or other construction details of
the on-site water supply well, however, are not known. The pump
within the on-site water supply well was pulled during the RI and
the well is no longer active.
The depth to water in the on-site water supply well was determined
to be approximately 80 feet below ground level, corresponding to an
approximate elevation of 396 ft. msl (See Table 3-2). The ground
water elevation at the WSW does not correspond with the
potentiometric data collected from wells screened in the Site
second uppermost aquifer but does correspond with the ground
elevation data collected from well PZ-1, which is screened in the
third aquifer beneath the Site. This provides further evidence
that the on-site water supply well is solely screened in the third
aquifer beneath the Site.
The third uppermost confining layer beneath the Site directly
underlies the third aquifer (see Figure 3-3). The upper portion of
the third confining layer was encountered during the drilling of
the exploratory boring only, as no other borings at the Site were
3-22
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advanced to a sufficient depth to encounter this layer. The third
confining layer was found to consist of very stiff, gray-brown
silty clay to clayey silt with minor (approximately 10%) very fine
sand. The thickness of this layer beneath the Site is not known.
Based upon an analysis of the USGS geophysical logs of well
clusters in the vicinity of the Site, the third confining layer is
apparently present throughout the region. This is consistent with
the interpretation of this layer as the Upper Cape Fear confining
unit.
3.3 Monitor Well Installation
3.3.1 Drilling Methods
All monitor wells constructed at the Site were drilled in
accordance with the procedures outlined in Section 12. 2 of the
approved RI/FS Work Plan. All of the monitor wells screened in the
uppermost aquifer at the Site (MW-lS through MW-6S) were completed
by the hollow stem auger method. An initial attempt was made to
drill monitor well MW-1D by the hollow stem auger method. However,
geologic conditions prevented the successful completion of this
monitor well. As a result, it was decided to complete the
remaining monitor wells screened in the intermediate aquifer (MW-
1D, MW-4D, MW-6D, MW-14D and MW-15D) by the mud rotary method. The
EPA approved the use of mud rotary to drill these monitor wells.
Monitor well number MW-11D was originally intended to be screened
in the uppermost aquifer, and was therefore installed using hollow
stem augers. However, the saturated zone of the uppermost aquifer
was less than two feet thick at MW-11D, and did not yield water to
a temporary well which was completed in the uppermost aquifer at
this location. Therefore, MW-11D was not screened in the uppermost
aquifer, but was completed as an intermediate monitoring well into
the second aquifer.
3.3.2 Well Construction
The nineteen monitor wells at the site were constructed in
accordance with the materials and methods prescribed in Sections
2.3.2.2 and 2.3.2.3 of the POP and/or in accordance with approved
modifications as detailed in correspondence to the USEPA (16). A
summary of the construction details for each of the nineteen
monitor wells is presented in Table 3-3. Construction diagrams for
each of the monitor wells installed are presented in Appendix 3-C.
During the monitor well drilling program conducted at the Site,
samples of the drilling mud, tap water, sand pack and bentonite
pellets utilized to complete the monitor wells were collected and
analyzed for quality assurance purposes. In addition, rinseate
blanks were collected from decontaminated drilling and sampling
equipment to document proper decontamination procedures. A
description of each of these samples, the analytical parameters for
which they were analyzed, and the results of the analyses are
presented in Appendix 3-D. A discussion of the results is also
3-23
- - - -
w I N ,,.
• .· WELL .;< •. /.
MW-1S 8-2-90
MW-10 10-8-90
MW-2S 8-10-90
MW-3S 8-7-90
MW-4S 8-22-90
MW-4D 9-25-90
MW-5S 8-17-90
MW-6S 8-14-90
MW-6D 9-18-90
PZ-1 10-4-90
MW-7S 5-31-91
MW-8S 6-3-91
MW-9S 6-4-91
MW-10S 5-29-91
MW-12S 5-30-91
MW-13S 6-5-91
MW-110 5-28-91
MW-14D 6-26-91
MW-15D 6-25-91
NOTES:
msl a mean sea level
bgl a below ground level
TBL 3-3 (9/19/91)
- - -
481.4
482.0
472.7
459.7
470.8
470.8
468.2
462.1
462.6
462.7
449.6
460.7
469.6
459.1
444.7
447.2
461.0
484.6
489.6
--- -
TABLE 3-3
MONITOR WELL CONSTRUCTION DETAILS
GEIGY CHEMICAL CORPORATION SITE
ABERDEEN, NORTH CAROLINA
484.04 63.4 0-10
484.83 109.3 0-7,0-65
475.52 55.5 0-10
462.26 42.0 0-10
473.47 39.3 0-10
473.99 95.2 0-9,0-52
471.34 44.3 0-10
464.71 44.4 0-10
465.49 89.1 0-9,0-48
465.65 132.7 0-10,0-50,0-99
451.89 26.6 0-9.8
462.72 40.5 0-9.5
471. 71 48 0-9.5
461.48 39 0-9.7
447.33 20 0-10.1
449.74 24 0-9.5
463.41 73 0-8.5
486.87 102 0-9.8,0-67.8
491.03 104.3 0-9.5,0-71.8
----- -
51.3-61.3 430. 1-420. 1
87.1-107.1 394.9-374.9
43.3-53.3 429.4-419.4
29.8-39.8 429.9-419.9
27.2-37.2 443.6-433.6
73.0-93.0 397.8-377.8
32.1-42.1 436.1-426. 1
32.2-42.2 429.9-419.9
66.9-86.9 395. 7-375. 7
110.5-130.5 352.2-332.2
16.2-26.2 433.4-423.4
27-37.1 433.7-423.6
34.6-44.5 435-425.1
26.8-36.5 432.3-422.6
9.6-19.6 435.1-425.1
13.6-23.8 433.6-423.4
59.4-69.6 401.6-391.4
88.4-98.3 396.2-386.3
90.9-100.7 356.3-388.9
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presented in Appendix 3-0 and summarized below.
Samples of drilling mud, filter pack and bentonite pellets were
analyzed for the TAL metals, pesticides, PCBs, volatile and semi-
volatile constituents. Analytical results are presented in
Appendix 3-0, and Tables 3-0-1 through 3-0-4. Aluminum was
detected in both of the drilling mud samples (340 mg/kg and 55
mg/1) and the sand pack (67 mg/kg) and the bentonite pellets (6,400
mg/kg). Iron was also detected in all samples ranging from 54
mg/kg to 8,800 mg/kg in the bentonite pellets. Arsenic was
detected in the bentonite pellets sample at 3.4 mg/kg and in the
10-08-90 drilling mud sample at 0.020 mg/1. Barium, calcium,
beryllium, magnesium, manganese, nickle and sodium wre also
detected in one or more of the samples. Copper, lead and zinc, the
site specific parameters, were also detected in some samples: 0.03
mg/1 Cu (OM-1008), 1.1 mg/kg Pb (OM-0831), 30 mg/kg Pb (BP-0823),
0.2 mg/1 Pb (OM-1008), 9.7 mg/kg Zn (OM-0831), 46 mg/kg Zn (BP-
0823) and 0.62 mg/1 Zn (OM-1008). Endosulfan Sulfate was detected
at 34 ug/kg in drilling mud sample OM-0831. Acetone was detected
in OM-1008 at 23 ug/1 and 4-methyl-2-Pentanone was detected in BP-
0823 at 82,000 ug/kg. No semi-volatile constituents were detected
in any of the samples.
Organic free water was processed on-site to use for equipment
decontamination. Samples of the organic free water were collected
and analyzed for TAL Metals, pesticides, PCBs, volatiles and semi-
volatile constituents. Analytical results are presented in
Appendix 3D, Tables 3-D-5 through 3-D-8. No analytical
constituents were positively detected in the organic free water
samples.
Equipment rinsate samples were obtained by pouring laboratory
supplied deionized water over the decontaminated drilling
equipment. The rinsate sample was collected and analyzed for
metals, pesticides, PCBs, volatile and semi-volatile constituents.
The analytical results are presented in Appendix 3-D and in Tables
3-D-9 through 3-D-12. Acetone, a common laboratory contaminant,
was detected in one rinse blank sample (RB-05-0727) at 14 ug/1.
Di-n-butylphthalate was detected in RW-1005 at 16 ug/1.
Water from the Aberdeen firehouse hydrant was used for equipment
decontamination and for mixing drilling muds and grout. Samples
were either collected from the hydrant, from the truck during
unloading or from both. The water was analyzed for metals and
pesticides; and, the results are presented in Appendix 3-D, Tables
3-D-13 and 3-D-14, respectively. In addition, one sample (FH-1)
was initially analyzed for volatile and semi-volatile constituents;
no volatiles or semi-volatiles were detected at the method
detection limit. No pesticides were detected on any of the tap
water samples. Trace concentrations (0.005 mg/1 to 0.06 mg/1) of
copper, lead and zinc were detected in some of the samples.
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3.3.3 Well Development
Following the installation of the ground water monitoring wells,
the wells were developed to the fullest extent practical to remove
drill cuttings or other materials introduced during the drilling
operation. The process also developed the sandpack and borehole of
the well to minimize pumping of fine-grained formation materials.
Development of the Phase 1, Step 2 wells began on September 7, 1990
and continued until November 5, 1990. Development of the Phase 4,
Step 2 wells began on June 25, 1991 and was completed by July 10,
1991. Development was accomplished by both hand bailing and
pumping methods.
Well development by bailing was accomplished using Teflon™, two-
inch diameter bailers. Well development was also accomplished
using Teflon TM and stainless steel bladder pump systems. Table 3-4
shows the well number, the total volume of water evacuated from the
borehole and the clarity of the water after development and prior
to sampling.
In addition to bailing and pumping, air surging was performed on
the deeper Site monitoring wells (MW-lD, MW-4D, MW-6D, MW-llD, MW-
14D, MW-15D and PZ-1) to set the sand pack and to remove the fine-
grained material from the sediment trap. Following surging, the
wells were pumped to remove the suspended fine grained material.
3.3.4 Abandonment of Hollow stem Augers
Three separate attempts were made to remove the 90 feet of augers
locked in the original MW-lD borehole. On May 30, 1991 a Failing
Speedstar 200 drill rig attempted to remove the augers by rotating
them before attempting to pull them out. The auger head adapter,
however, broke several times while attempting to turn the augers.
The augers were therefore abandoned by pumping bentonite/neat
cement grout inside the augers. Ninety feet of tremie pipe was
used to pump approximately 300 gallons of grout inside the augers.
Grout was observed rising in the annular space between the augers
flights and the surface casing before rising inside the hollow stem
augers themselves.
3.4 Physical Laboratory Tests
3.4.1 Grain Size Analysis
In accordance with Section 12.9 of the approved RI/FS Work Plan, a
total of 15 samples were selected from the saturated zones of the
exploratory boring and monitor well borings for grain size analysis
(ASTM Method D422-63). The results of grain size analyses of
samples collected from the exploratory boring were utilized to
assist in the determination of sand pack grain size and screen slot
size for the monitor wells.
3-26
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MW-1S
MW-1D
MW-2S
MW-3S
MW-4S
MW-4D
MW-5S
MW-6S
MW-6D
PZ-1
MW-7S
MW-8S
MW-9S
MW-10S
MW-12S
MW-13S
MW-11D
MW-14D
MW-15D
TBL3-4 (9/19/91)
TABLE 3-4
SUMMARY OF WELL DEVELOPMENT
GEIGY CHEMICAL CORPORATION SITE
:, . /}/ TOTAL VOLUME WATER CLARITY ···· ·
NOVEMBER 1990 204 CLEAR
NOVEMBER 1990 465 CLOUDY
NOVEMBER 1990 190 CLEAR
NOVEMBER 1990 98 CLEAR
NOVEMBER 1990 122 CLEAR
NOVEMBER 1990 1210 SLIGHTLY CLOUDY
NOVEMBER 1990 325 CLEAR
NOVEMBER 1990 165 SLIGHTLY CLOUDY-CLEAR
NOVEMBER 1990 1467 CLOUDY
NOVEMBER 1990 2730 CLOUDY
JULY 1991 14 SLIGHTLY CLOUDY
JULY 1991 19.5 SLIGHTLY CLOUDY
JULY 1991 29 CLOUDY
JULY 1991 42 CLEAR
JULY1991 20.5 SLIGHTLY CLOUDY
JULY 1991 63 CLEAR
JULY1991 110 CLOUDY
JULY 1991 206 CLOUDY
JULY 1991 146 CLOUDY
3-27
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A table indicating the location, Site aquifer designation,
classification and percent fine material of each soil sample
selected for grain size analysis is presented as Table 3-5. The
individual grains size distribution graphs for each selected soil
sample are presented in Appendix 3-E.
The results of the grain size analyses indicate that the three
aquifers beneath the Site are composed primarily of fine to
medium-grained sands containing between 10% to 30% by weight fine
material (clay and silt sized particles). Up to 5% fine gravel by
weight was noted in several of the selected soil samples.
3.4.2 Permeability Tests
Laboratory permeability tests were conducted on two undisturbed
Shelby tube samples collected from the uppermost confining layer at
the Site. The two samples were collected from the upper portion of
the first confining layer during the drilling of monitor well
borings MW-1D (65 to 66 feet) and MW-5S (49.5 to 50.5 ft.). The
permeabilities of the samples collected from the uppermost
confining layer at.MW-1D and MW-5S were determined to be 5.2 x 10·8
cm/sec and 4.14 x 10·8 cm/sec, respectively. The laboratory data
sheets for the permeability tests are presented in Appendix 3-E.
An attempt was made to collect undisturbed soil samples from the
second confining layer at monitor well borings MW-4D and MW-6D for
permeability testing. However, due to the extreme hardness of the
confining layer, the Shelby tube samples could not be pushed to an
adequate depth into the layer, and, therefore, no sample was
retrieved.
3.5 Aquifer Tests
In accordance with Section 12.8 of the approved RI/FS Work Plan,
slug tests were performed at each Phase 2, Step 1 ground water
monitor well location. Rising head slug tests were performed at
those monitor wells in which the top of the screen was located
above the water table (MW-2S through MW-6S). Falling head slug
tests were performed at those monitor wells in which the water
level was above the top of well screen interval (MW-lS, MW-4D, MW-
6D, and PZ-1). The slug tests were performed by instantaneously
removing (rising head test) or introducing (falling head test) a
slug into the monitor well and incrementally measuring water levels
with time.
Values of hydraulic conductivity (K) were determined from an
analysis of the collected slug test data at each Phase 2, Step 1
monitor well location. The calculated hydraulic conductivity
values are presented in Table 3-6. Slug test data sheets may be
referenced in Appendix 3-F. Values of hydraulic conductivity could
not be calculated for wells MW-4S, MW-5S, or MW-4D since the water
levels recovered almost immediately following introduction or
removal of the slug volume.
3-28
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TABLE 3-5
SITE AQUIFER DESIGNATION, CLASSIFICATION AND PERCENT
FINE MATERIAL OF SELECTED SOIL SAMPLES
FOR GRAIN SIZE ANALYSIS
GEIGY CHEMICAL CORPORATION SITE, ABERDEEN, NC
· BORING•· ) DE~~ .<.tt.) ·· .. •· •· SITE AQUIFER(1)
,)/.--:::-: :ti\)/':·
EB-1 49.0-50.0
EB-1 50.5-51.1
EB-1 51.1-51.9
EB-1 54.0-55.6
EB-1 79.0-81.0
EB-1 88.0-90.0
EB-1 97.0-99.0
EB-1 126-128
EB-1 135-137
MW-1S 56-58
MW-10 82-84
MW-2S 47-49
MW-5S 34-36
MW-6S 40-42
MW-6D 80-82
(1) 1 = Uppermost Aquifer
2 • Second Uppermost Aquifer
3 ~ Third Uppermost Aquifer
··.-.--•·_,
1
1
1
1
2
2
2
3
3
1
2
1
1
1
2
·. •, •CLASSIFICATION · . ··.• .. . , ... ·;._-.-.
... =._: .. ::-,.-~-=:·
silly sand with fine gravel
silty sand
silty sand
silty sand with fine gravel
silty sand
silty sand
silty sand
silly sand with fine gravel
silly sand
silty sand wilh gravel
sandy sill
silty sand
silty sand
silty sand
silty sand
- - -
/%FINES (2). ·•· ·.· ·-:. )t'.i:'=i
30
15
20
20
15
15
30
20
10
20
65
20
15
15
20
(2) % Fines is the total percentage, by weight, of silt and clay sized particles in soil sample.
table 3-5 (9-13-91)
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TABLE 3-6
SUMMARY OF SLUG TEST RESULTS
GEIGY CHEMICAL CORP. SITE, ABERDEEN, NC
UPPERMOST AQUIFER
MW-1S
MW-2S
MW-3S
MW-6S
SECONO AQUIFER
MW-10
MW-6O
THIRD AQUIFER
PZ-1
NOTES:
· \1-iYDRAUL.!C::C::()NDUCTI.Vrf)'.(K) / y•• . . . .. .. ••<cm/sec) /> . . . . .
3 E-04
2 E-03
1 E-03
6 E-03
Geometric Mean K • 1 E-03
3 E-03
2 E-03
Geometric Mean K • 2 E-03
4 E-04
-Hydraulic conductivities calculated by Bouwer and Rice Method (Bouwer
and Rice, (15); Bouwer, (16)).
-Slug tests conducted 12-12-90 and 1-4-91 by ERM-Southeast.
-For MW-4S. MW-4D and MW-SS. water levels recovered almost immediately during test;
unable to obtain enough water level measurements for hydraulic conductivity
calculations.
Table 3-6 (9-13-91)
3-3 0
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The calculated hydraulic conductivity values for those monitor
wells screened in the uppermost aquifer ranged from 3 x 10·4 cm/sec
to 6 x 10·3 cm/sec with a geometric mean hydraulic conductivity
value of 1 x 10·3 cm/sec. Using the range of calculated hydraulic
conductivity values and the average hydraulic gradient for the
eastern portion of the site of 0.026 ft/ft (July 1991) and assuming
an effective porosity of 38% (mean of range in porosity values for
unconsolidated sands; Freeze and Cherry (17)), the range of average
linear ground water velocities in the uppermost aquifer beneath the
eastern portion of the Site is computed to be 0.06 to 1 ft/day.
Similarily, utilizing the calculated range of hydraulic
conductivities for the uppermost aquifer, an effective porosity of
38%, and the hydraulic gradient calculated for the western portion
of the Site of 0.017 ft/ft (July 1991), the range of average linear
ground water velocities in the uppermost aquifer beneath the
western portion of the Site is computed to be 0.04 to 0.8 ft/day.
For the convegence zone, the range of average linear ground water
velocities is calculated to be 0.02 to 0.3 ft/day. These values
were calculated using the computed range of hydraulic
conductivities for the uppermost aquifer, an assumed effective
porosity of 38% and the August 1991 calculated hydraulic gradient
within the covergence zone of 0.0076 ft/ft.
The calculated values of hydraulic conductivity determined from
those monitor wells screened in the second aquifer at the Site
ranged from 2 x 10·3 cm/sec to 3 x 10·3 cm/sec, with a geometric mean
value of hydraulic conductivity of 2 x 10·3 cm/sec. Using the
calculated range of hydraulic conductivity values and the average
hydraulic gradient (July 1991) for the second aquifer of 0.003
ft/ft, and, assuming an effective porosity of 38%, the range of
average linear ground water velocities for the second aquifer is
calculated to be 0.04 to 0.07 ft/day.
The calculated geometric mean value of hydraulic conductivity for
those monitor wells screened in ·both the second and third Site
aquifers of 2 x 10·3 cm/sec is similar to that reported in NRCD (11)
for Middendorf sediments in the Sand Hills region of 19 ft/day (7
x 10·3 cm/sec). The calculated values of hydraulic conductivity for
those monitor wells screened in the uppermost Site aquifer are less
than the average value of 29 ft/day (1 x 10·2 cm/sec) reported in
Winner and Coble (9) for the surficial aquifer in the Coastal Plain
region of North Carolina.
3.6 Ground Water Sampling and Analysis
3.6.1 Sampling Procedures
Phase 2, Step 1 ground water samples were collected on November 13-
16, 1990 from the ten on-site monitor wells and the on-site water
supply well. Phase 4, Step 2 ground water samples were collected
July 10-12, 1991 from the on-site intermediate wells and off-site
wells including two private wells and a USGS well. Sampling was
conducted in accordance with the procedures outlined in the RI/FS
Work Plan and QAPP (1). A brief summary of the sampling procedures
3-31
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is presented below.
3.6.1.1 Monitor Wells and On-site Water Supply Well
The depth to ground water at each well was determined prior to
purging. The water level measurements were collected using an
electric water level indicator and recorded to the nearest 0.01
foot. The water level meter, as well as all ground water sampling
equipment, was decontaminated prior to initial use and between
wells in accordance with the procedures outlined in the RI/FS Work
Plan (1).
Following the determination of water elevation measurements, each
well was purged of a minimum equivalent to three times the
calculated casing volume of standing water in the well. With the
exception of MW-4S, wells sampled during Phase 2, Step 1 of the
investigation were purged using the QED Well Wizard TM pump system.
The system consists of a Teflon TM bladder pump and tubing housed
in a stainless steel casing. Due to the limited volume of standin~
water in the well, MW-4S was purged using a closed top Teflon
bailer.
With the exception of MW-14D and MW-15D, wells sampled during Phase
4, Step 2 of the investigation were purged with Teflon TM bailers
Wells MW-14D and MW-15D were purged using a Teflon TM bladder pump.
Field measurements of temperature, pH, and specific conductivity
were made after each well bore volume of water was purged, or more
frequently, to determine whether the parameters had stabilized.
The stabilization criteria for the field parameters were:
Temperature± 0.5°C, pH± 0.1 unit and specific conductance± 10
umhos/cm. If the parameters had not stabilized after three well
casing volumes of water were removed, purging continued until a
maximum of five volumes of water were removed.
Ground water samples for Phase 1, Step 2 were collected using the
same pump (or in the case of MW-4S, the same bailer). During Phase
4, Step 2, shallow wells and MW-llD were sampled with the bailer
used to purge them. A Teflon TM bladder pump was used to Ji>urge MW-
14D and MW-15D before they were sampled with a Teflon bailer.
Ground water samples were placed in clean, laboratory supplied
containers and preserved in accordance with procedures outlined in
Table B-2 of the (QAPP) (1). Each sample was sealed, labeled,
placed on ice, and shipped for overnight delivery to the designated
laboratory. Phase 2, Step 1 samples were analyzed by IEA
Laboratory of Cary, NC; and, Phase 4, Step 2 samples were analyzed
by PACE, Inc. of Minneapolis, MN. Proper chain-of-custody
documentation accompanied the samples. All sampling activities
were recorded in field log books. ·
3-32
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3.6.1.2 Sampling of Off-Site Wells
As part of the Phase 4, Step 2 remedial investigation, two off-site
water supply wells were sampled during the first week of July 1991.
These wells are located east of the Site at the Powdered Metal
Products facility and Allred residence (see Figure 1-5). Because
the wells are in current use, and are equipped with submersible
pumps, the wells could not be sampled in the same manner as the
site monitoring wells. The following briefly describes information
obtained from interviewing the owner/operator of the wells and the
procedure used to sample each well.
The first water supply well sampled was the Powdered Metal Products
(PMP) well. According to the plant manager, water from the well
is used to replenish water lost to evaporation from their cooling
system. The water is also used in the plant's rest rooms. Bottled
water is used for drinking at the facility.
The PMP well is located in a well house outside the plant building.
It is constructed of a six-inch casing and is 130 feet deep. The
screened zone was not known by plant personnel. A submersible pump
serves the well. The plant manager indicated that this was the
seventh pump in the well because of electrical damage to the
previous pumps. A discarded Grundfos TM submersible pump was
located inside the plant building a few feet from two air tanks
which pressurize the system. A hose was connected to the system
and allowed to flush approximately 15 minutes. Temperature, pH and
specific conductivity stabilized after an estimated 105 gallons
were purged and had values of 18.5°C, 4.0 and 24 umhos/cm
respectively before sampling. The hose was removed and the sample
collected in VOA vials. Because the faucet was located too close
to the plant floor to permit the VOA vial from being held upright
while being filled, another VOA container had to be used to
transfer water to the containers. The PMP plant manager observed
the sampling of the well.
The second water supply well which was sampled was the Allred well.
The well is used by the residents for irrigating a garden and for
household use although bottled water is used for drinking. The
well is located in a well house adjacent to the residence. A four-
inch galvanized steel casing is visible at the surface. The well
contains a submersible pump and according to the home owner, is
either 80 or 100 feet deep. The screened zone was not known by the
home owner.
The well was sampled from a faucet located at the well house.
Seventy-five gallons of water were purged before the well was
sampled. Indicator parameters were stable after 40 gallons and at
sampling had the following values: temperature of 18.2°C, pH of
4.9 and conductivity of 28.7 umhos/cm. VOA containers were filled
directly from the faucet. Mr. Allred was present during sampling.
3-33
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3.6.2 Phase 2, step 1 Analytical Results
The ground water samples were analyzed in accordance with the USEPA
Contract Laboratory Program (CLP) for the Target Compound List/
Target Analyte List (TCL/TAL) parameters. The analytical results
are discussed in the following sections and a summary of the
analyses for the field parameters and each fraction (i.e.,
volatiles, semi-volatiles, pesticides and metals) is provided in
Tables 3-7 through 3-11. In addition, a graphic representation of
the constituents detected at or above the detection limit is
presented in Figures 3-9 through 3-11.
3.6.2.1 Field Parameters
Specific conductance, pH and temperature measurements are
summarized in Table 3-7 and illustrated on Figure 3-9. As
indicated, specific conductivity in the shallow wells ranged from
50 umhos/cm at upgradient well MW-lS to 1,740 umhos/cm at MW-6S.
The pH measurements in the shallow wells ranged from 6. 9 in
upgradient MW-lS to 3.8 in MW-6S.
The specific conductivity and pH measurements for the intermediate
wells and the deep well were less variable across the Site.
Specific conductivity ranged from 20 umhos/cm in the water supply
well to 40 umhos/cm in MW-4D. Well PZ-1, screened in the third
uppermost aquifer, had a specific conductance of 90 umhos/cm and a
pH of 6.8. The pH values for the intermediate wells ranged from
5.6 in the water supply well to 6.8 in MW-4D. Temperature values
for all of the wells ranged from 16.5°C at upgradient well MW-lS to
20.1°c at MW-2s.
3.6.2.2. TCL Volatiles
Analytical results for the volatile organic parameters are
summarized on Table 3-8. Figure 3-10 provides an illustration of
the constituents identified above the detection limit.
Trichloroethene was not detected in the shallow wells or the
upgradient wells at the Site and has not been previously detected
in the Site soils. Trichloroethene was, however, detected in wells
MW-4D and MW-6D at concentrations of 200 ug/1 and 11 ug/1,
respectively. Trichloroethene has previously been detected in
other wells around the Aberdeen area, as evidenced in samples
collected in October 1989 by EPA Region IV ESD (Reference Appendix
3-G). The October 1989 samples indicated trichloroethene in
private wells owned by Allred (GC-PW-03) and Powder Metals (AP-PW-
02) at concentrations of 34 ug/1 and 330 ug/1, respectively. Both
properties are upgradient of the Site.
3-34
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TABLE 3-7
PHASE 2, STEP 1 GROUND WATER INVESTIGATION
FIELD PARAMETER DATA-NOVEMBER 1990
GEIGY CHEMICAL CORPORATION SITE
<<\\MONITOR<<•·••·•• (/ j C:ONpUCTI.V.I.TY(1)•(/ <. •<pH•} •••· .<<TEMPERATURE•
••·•••Hi Yweilllocf..YioNL ./• tr••· t·r·•• (u,hlidsiciii> ?•••··•••>?••••·• tt•·(sid,•••unitsl>••· '•I•··ta~~~~~~ C~riti9;Kd~i·/\
MW-1S 50 6.9 16.5
MW-1D 20 5.8 17.0
MW-2S 1080
MW-3S 600
MW-4S 50
MW-4D 40
MW-5S 100
MW-6S 1740
MW-6D 20
PZ-1 90
WSW 20
NOTES:
(1) CONDUCTIVITY AT 25 DEGREES C.
WSW= ON-SITE WATER SUPPLY WELL
TBL 3-7 (9/9/91)
3-35
4.0 20.1
6.8 18.0
4.6 18.7
6.8 19.5
4.3 17.7
3.8 19.0
5.7 17.0
6.8 18.5
5.6 18.0
I ,,
1-11
11·
11.
Ii _ _.---
I\
I\
I\
1:
1:,
~\ //
1/ ~ 1/
,\ /!
~ //
//
// wooos // u
// /1/ -I
//
;ff,,, ~ I I S(Xl'I' SHOP 1/ ~ I I WS#
SC= 2'3 I I MW-25 ' P:Z:-1 pH = 5.6
I I "' T = 1a.a ljW-1S MW-:lS SC = 1080 \ IIW-1D . SC = '30 pH = 4.0 SC • 50 SC • 600 I I pH • 6.8 T • 2u.l :--:-+=,C/ ~ pt\ • &.9 SC= 20
pH• &.8 T = 18.5 T • 1&.S pH = '5.8
T = 18.0 /\:. • . ---T = !7.0 L--. . I "" 7 sTI.~ Hteif«AY 211 "-
::,_ ,:::: ---~ ----1-----· ----
:If. -.,.p;,""" .. / 'l''
-: .. -~ -. ~~'
-~~',1-lD ------..._ " . "" -• . ) '-a,"•-
~ ,..,._ .,,,. ---" '-;: ~--
-----= "" <9>W-3S DECO~ " ~\J-lS --p,i) i l ~CE h TNiK p~
--·1 PZ-1 \ -· FeflMER "."
' -----(a.xff l WARfliQJSE ". "~" ~ I • PNJ CN.1"1 (CONOl£1! PAD OOL Y) • ABERllEDi ANO ROCXF!SH RAJU!OAD ' . . ·-I
,,'-
' 'IIUl. ' ESTIMAl!D PR<lf'mlY LINE
. '-.. " H',/-6SK '\\_ . . ~9ss \
• -\
\ ' ,ii V-~D
IN/-65 I ~-MW-6D ----~
SC = 1740 MW-~ I --.:,,..__-,
SC = 20 \ -..::: pH = 3.8 pH = 5.7 T = 19.0 T • 17.0
SC = 100 1.1W-4S
~ pH • ~.3 SC= 50 llW-~ T = 17,7 pH = 4.6 SC = 40 T = 18,7 pH = 6..8 T = 19.S
I\
IL
I
I'
I
1:_
~ '--..
---........ ........ -..... ......................
........ ........ ........ ------.......... '--.. ........
........ ' 0 80 '"----' WOODS 1 j '--..' I 1
' " SCALE lN FEET
) ', KEY LEGEND FIGURE S-9. PHASE 2 STEP 1 GROUND -WATER ~ -JNVES'1'1GATI0N FIELD p~S AT MONITOR
..
SC = SPECIFIC coND\JCTlVffl
HV-6SS ~ /,QU1fs!I ,o<ITtlR ,,,,:u.
lfET....L LOCATIONS, NOVEMBER, 1990 .. (.,,.,OSI ,:l"I)
GEIGY cllEMICAL CORPORATION srn: pH= pH
HV-t>~ s£Clll'D l,Q.MtR ,oITTlJ>I ;/El.I.
ABERDEEN• NORTB CAROUNA
T = TEMPERATURE <C" l
PZ-!f) nuRll ,aNO' ,o,IT1lR VO-L WSW P OH-SITE WATER SUPPLY WEU. ·Im ERM-SOUTHEAST, INC
I
I'.
91,
-
w
I w
-.)
-- -- --- - - - - -- - -
SAMPLE 10: AGS-GW-WSW IAGS-GW-1S
LAB NUMBER: EA187 EA190
SAMPLE DATE: 11/14190 11/14/90
COMMENTS: MATER SUPPLY
BROMOMETHANE 10U 10U
VINYL CHLORIDE 10U ,ou
CHLOAOETHANE 10U 10U
METHYLENE CHLORIDE SU SU
ACETONE 10U 10B
CARBON DISULFIDE SU SU
1.1-0ICHLOROETHENE SU SU
1.1-0ICHLOROETHANE SU SU
1,2-0ICHLOAOETHENEITOTAL) SU SU
CHLOROFORM SU SU
1,2-0ICHLOAOETHANE SU SU
2-BUTANONE 10U 10U
1, 1, 1-TRICHLOROETHANE SU SU
CARBON TETRACHLORIDE SU SU
VINYL ACETATE 10U 10U
BROMOOICHLOROMETHANE SU SU
1,2 OICHLOROPROPANE SU SU
CIS-1,3-0ICHLOROPAOPENE SU SU
TRICHLOROETHENE SU SU
DIBROMOCHLOROMETHANE SU SU
1, 1,2-TRICHLOROETHANE SU SU
BENZENE SU SU
TRANS-1,3-0ICHLOROPROPENE SU SU
BROMOFORM SU SU
4-METHYL-2-PENTANONE 10U 10U
2-HEXANONE 10U ,ou
TETRACHLOROETHENE SU SU
1, 1,2,2-TETRACHLOROETHANE SU SU
TOLUENE SU SU
CHLOROBENZENE SU SU
ETHYLBENZENE SU 5U
STYRENE SU SU
XYLENE (TOTAL) SU ◄J
NOTES. RESULTS IN UG/L DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
8 • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
J • QUANTITATIVE ESTIMATE.
TBL 3-8 (9110/D1)
TABLE 3-9
PHASE 2, STEP 1 GROUND WATER SAMPLES-TCL VOLATILES
GEIGY CHEMICAL CORPORATION SITE
lt\GS-GW-10 l,aGS-GW-2S GS-GW-3S iAGS-GW-4S GS-GW-40
EA188 EA200 ER193 ER201 EA194
11/14/90 11/16/90 11/15/90 11/16/90 11/15/90
10U 10U 10U 10U ,ou
10U 10U ,ou 10U 20U
,ou 10U 10U 10U 20U
SU SU SU SU 10U
1308 ,ou 1008 10U 20U
SU SU SU SU ,ou
SU SU SU SU ,ou
SU SU SU SU ,ou
SU SU SU SU ,ou
SU SU SU SU ,ou
SU SU SU SU ,ou
10U 10U ,ou 10U 20U
SU SU SU SU 10U
SU SU SU SU 10U
,ou 10U 10U 10U 20U
SU SU SU SU ,ou
SU SU SU SU 10U
SU SU SU SU 10U
SU SU SU SU 200
SU SU SU SU 10U
SU SU SU SU 10U
SU SU SU SU ,ou
SU SU SU SU 10U
SU SU SU SU 10U
10U 10U ,ou 10U 20U
10U 10U 10U 10U 20U
SU SU SU SU ,ou
SU SU SU SU 10U
SU SU SU SU ,ou
SU SU SU 5U 10U
5U SU SU 5U 10U
SU SU SU 5U 10U
SU SU SU SU 10U
AGs-GW-5S AGS-GW-8S iAGS-GW-60
EA202 EA203 EA192
11116/90 11/16190 11/15/90
10U 10U ,ou
10U 10U 10U
,ou ,ou 10U
SU SU SU
10U 10U ,ou
SU SU SU
SU SU SU
SU SU SU
SU SU SU
SU SU SU
SU SU SU
10U 10U 10U
SU SU SU
SU SU SU
10U 10U ,ou
SU SU SU
SU SU SU
SU 5U SU
SU SU 11
SU 5U 5U
SU 5U SU
SU 5U SU
SU SU SU
5U 5U SU
10U 10U 10U
,ou 10U 10U
SU SU OU
5U SU SU
SU 5U 5U
OU SU SU
5U SU 5U
5U SU 5U
SU SU SU
- - -
GS--GW-PZ-1 lA°GS-GW-7S
ER195 EA-191
11/15/90 11/14/90
RUND SPLIT
10U 10U
10U 10U
,ou 10U
SU SU
10U 10U
SU SU
SU SU
SU SU
SU SU
SU SU
SU SU
,ou 10U
SU SU
SU SU
10U 10U
SU SU
SU SU
SU SU
SU SU
SU SU
SU SU
SU SU
SU SU
SU SU
10U 10U
10U 10U
5U SU
5U SU
SU SU
5U 5U
5U OU
5U SU
SU ◄J
i
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
•
WOODS
IIW-:lS ND
H\/-2S
Nil
u
-I
BOllY SHOP
' '-l
/
E]
UW-1S
ND H'w'-ID ND
----------
M._.-3S DECOS); PAD
\
,_,, -=· I <FFlCE '~I'--'AN-"'K'--'P~AO!e..l...:'.:"'~ .... ::.":'...J ABERoro, ANO ""°"'15H RAILROAD
E:S!>Mrr-o ~ UN£
KEY
MW~
Nil
TCE -= Tr!Chlcrc.-thene
wooos
ND = No't :0.tect.d a. t the D,uctaon Ll'ltt
VS\/ =-'wa:ter Supply Veil
Results In ug/t
-,,D
MW-®
Tet: ll
LEGEND
H\/-6SS ...,.._,.T ""1JlftR IOaTtlR l(EJ..l.
Hw'-6¾,-sttmm MI.IIF£R tOaTtJt \ID..l.
PZ-1~ THIRD ""1JlftR ID<ITtll l(EJ..l.
I
~ \, ------..
..__ __ -:~-='=--=--=---=---::iwsw~ND __ _, \ Mil f'
H\/-SS ND H'w'-4S
ND
Tet: 200
0 80
SCALE IN FEET
FIGURE 3-10. PHASE 2 STEP 1 GROUND WATER
. ANALYSES, VOLATILES AND SEMI-VOLATILES,
NOVEl!BER, 1990
GEIGY CHEMICAL CORPORATION SITE
ABERDEEN, NORTH CAROLINA
mm E;RM-SOUTHEAST, INC
3-38
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3.6.2.3 TCL Semi-Volatiles
Results of the semi-volatile analyses are summarized in Table 3-9.
Semi-volatile constituents were not detected above the detection
limit.
3.6.2.4 Pesticides
The analytical results for pesticides are presented in Table 3-10
and the constituents detected above the detection limit are shown
on Figure 3-11. As indi'cated, pesticides were detected in all on-
site shallow wells except the upgradient well MW-ls. Pesticides
were not detected in the intermediate and deep wells.
The BHC isomers (total) ranged from 2.2 ug/1 in MW-3S to 107 ug/1
in MW-6S. The Maximum Contaminant Level for gamma-BHC (0.2 ug/1)
(18) was exceede,d in all shallow wells. Aldrin and Dieldrin were
detected in wells MW-4S (0.1 ug/1 and 0.2 ug/1, respectively).
Endrin ketone was detected in wells MW-2S (0.4 ug/1) and MW-4S (0.2
ug/1). Toxaphene was found in MW-2S (10 ug/1) and MW-4S (5 ug/1).
The primary drinking water standard for toxaphene is 3 ug/1 (19).
3.6.2.5 TAL Metals
Results of the metals analyses are 'summarized in Table 3-11.
Arsenic, barium, cadmium, chromium, mercury, nickel, selenium,
silver and zinc were either not detected or were detected at
concentrations below the Federal Drinking Water Criteria (20). The
secondary drinking water standard for iron (300 ug/1) was exceeded
in six wells including both upgradient wells (MW-lS and MW-1D).
The concentrations of iron ranged from not detected at wells MW-5S
and MW-6S to 4,790 ug/1 at the on-site water supply well. Copper
was detected in the water.supply well at a concentration of 1,180
ug/ 1 which is slightly above the Secondary Maximum Contaminant
Level (MCL) of 1,000 ug/1 (20). Lead was not detected above the
MCL of 50 ug/1 or the CERCLA/EPA cleanup level of 15 ug/1.
Continued monitoring of the TAL metals was · determined to be
unwarranted.
3.6.3 Phase 4 Step 2 Analytical Results
The Phase 4, step 2 ground water samples were analyzed in
accordance with the Contract Laboratory Program (CLP) for the TCL
pesticides and/or volatile organics. Monitor Wells MW-7S through
MW-l0S, MW-12S, MW-13S, MW-11D, MW-14D and MW-15D were analyzed for
TCL pesticides and volatile organics. USGS-02-03 was analyzed for
pesticides only. Wells MW-1D, MW-4D, PZ-1, the Allred well and the
PMP well were analyzed for TCL volatiles only. Based on the Phase
2, Step 1 analytical results, metals analyses were determined to be
unwarranted for the Phase 4 step 2 program. The Phase 4, Step 2
analytical results are discussed in the following sections.
3-39
-
w
I
"' 0
- --- -
SAMPLE ID: AGs--GW-WSW
LAB NUMBER: EA187
SAMPLE DATE: 11/14/90
COMMENTS: !NATER SUPPLY
WELL
----- -
TABLE 3-9
PHASE2 STEP 1 GROUNDWATER SAMPLES-TCL SEMI-VOLATILES
GEIGY CHEMICAL CORPORATION SITE
A.Gs-GW-1S ... GS-GW-10 "Gs-GW-2S A.GS-GW-3S iAGS-GW-4S AGS-GW-40
ER190 ER188 ER200 ER193 EA201 EA194
11/14/90 11/14190 11/16190 11115/90 11/HS/90 11/15/90
--- ---
GS-GW-5S ... Gs--GW~ "Gs-GW-60 ... GS-GW-PZ-1 AGS-GW-7S
ER202 EA203 EA192 ER195 EAHU
11/16/90 11/16/90 11/15/90 11/15/90 11/14/90
:,LIND SPLIT
OFGW-1S
,.;_ . _CON~TfTUE~T ·. •· .. /i•·· ..:'-<>.•. ·• Lx .,.
.==>·· .•• // .... -:•/('·" ' {. .. .. . .
PHENOL 1OU ,ou
B15(2-CHLOROETHYL)ETHEA IOU IOU
2-CHLOROPHENOL IOU IOU
1.3-0ICHLOAOBENZENE IOU IOU
1,4-DICHLOAOBENZENE IOU IOU
BENZYL ALCOHOL IOU IOU
1.2-0ICHLOROBENZENE IOU IOU
2-METHYLPHENOL IOU IOU
BIS(2-CHLOAOISOPAOPOPYL)ETHE IOU IOU
4-METHYLPHENOL IOU IOU
N-NITAOS0-01-N-PAOPYLAMINE IOU IOU
HEXACHLOAOETHANE IOU IOU
NITROBENZENE IOU IOU
ISOPHORONE IOU IOU
2-NITROPHENOL IOU IOU
2.4 DIMETHYLPHENOL IOU IOU
BENZOIC ACID 50U 50U
BJS(2-CHLOROETHOXY)METHANE IOU IOU
2.4-DICHLOAOPHENOL IOU IOU
1.2,4-TRICHLOROBENZENE IOU IOU
NAPHTHALENE IOU IOU
4-CHLOAOANILINE IOU IOU
HEXACHLOROBUTAOIENE IOU IOU
4--CHLOR0-3-METHYLPHENOL IOU IOU
2-METHYLNAPHTHALENE IOU IOU
HEXACHLOROCYCLOPENTAOIENE IOU IOU
2,4.6-TRICHLOROPHENOL IOU IOU
2,4.S-TRICHLOAOPHENOL 50U 50U
2--CHLORONAPHTHALENE IOU IOU
2-NITROANILINE 50U 50U
DIMETHYLPHTHALATE IOU IOU
ACENAPHTHYLENE IOU IOU
2J~DINTROTOLUENE IOU IOU
NOT T ES. DA A HAS BE EN VALIDAT ED. RESULTS IN UG/l.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
J • QUANTITATIVE ESTIMATE.
TBL 3-9 (9/10/91)
1OU ,ou
IOU IOU
IOU IOU
IOU IOU
1OU IOU
IOU IOU
IOU IOU
IOU IOU
IOU IOU
IOU IOU
IOU 1OU
IOU IOU
IOU IOU
IOU IOU
IOU IOU
IOU IOU
50U 50U
IOU IOU
IOU IOU
IOU IOU
IOU IOU
IOU IOU
IOU IOU
IOU IOU
IOU IOU
IOU IOU
IOU IOU
50U 50U
IOU IOU
50U 50U
IOU IOU
IOU IOU
IOU IOU
,ou ,ou 1OU 1OU 1OU 1OU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU 1OU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
50U 50U sou 50U 50U 50U 50U 50U
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU 4J .., IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU 1OU
IOU IOU IOU 1OU IOU IOU IOU IOU
IOU IOU IOU 1OU IOU IOU IOU IOU
IOU IOU IOU IOU 1OU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
50U 50U 50U 50U 50U 50U 50U 50U
IOU IOU IOU IOU IOU IOU IOU IOU
50U 50U 50U 50U 50U 50U 50U 50U
IOU IOU IOU IOU IOU IOU IOU IOU
IOU IOU IOU 1OU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU IOU IOU
.. --- - ----- -
TABLE3-9
PHASE 2 STEP 1 GROUND WATER SAMPLES-TCL SEMI-VOLATILES
GEIGY CHEMICAL CORPORATION SITE
--
SAMPLE ID: AGS-GW-WSW ... GS-GW-1S ,Gs-GW-10 ... GS-GW-2S .. GS-GW 3S ,GS-GW-4S GS-GW-4D ltr.GS-OW-SS ,GS--GW-&S
LAB NUMBER: EA187 EA190
SAMPLE DATE: 11/1 ◄'90 11/14/90
COMMENTS: r.ATEA SUPPLY
WELL
CONSTITUENT . · ~ ;' ,.:-...=.·:: . ,. ...
3-NITROANILINE 50U 50U
ACENAPHTHENE IOU IOU
2,4-0INITROPHENOL sou SOU
4-NITROPHENOL sou sou
DIBENZOFURAN IOU IOU
2,4-0INITROTOLUENE IOU IOU
DIETHYLPHTHALATE IOU IOU
4--CHLOROPHENYL-PHENYLETHEA IOU IOU
FLUOAENE IOU IOU
4-NITROANILINE sou sou
4,6-0INTA0-2-METHYLPHENOL sou sou
N-NITROSOOIPHENYLAMINE IOU IOU
4-BAOMOPHENYL-PHENYLETHEA IOU IOU
HEXACHLOAOBENZENE IOU IOU
PENTACHLOAOPHENOL 50U sou
PHENANTHAENE IOU IOU
ANTHRACENE IOU IOU
OI-N-BUTYLPHTHALATE IOU IOU
FLUORANTHENE IOU IOU
PYRENE IOU IOU
BUTYLBENZYLPHTHALATE IOU IOU
3,3'-0ICHLOROBENZIDINE 20U 20U
BENZO(a)ANTHRACENE IOU IOU
CHRYSENE IOU IOU
BI5(2-ETHYLHEXYL)PHTHALATE IOU IOU
DI-N--OCTYLPHTHALATE IOU IOU
BENZO(b)FLUORANTHENE IOU IOU
BENZO(k)FLUORANTHENE IOU IOU
BENZO(a)PYRENE IOU IOU
INDEN0(1,2,3-cd)PYRENE IOU IOU
OIBENZ(a,h)ANTHRACENE IOU IOU
BENZO(g,h.i)PERYLENE IOU IOU
NOTES. DATA HAS BEEN VALIDATED, RESULTS IN UG/L.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
J "'QUANTITATIVE ESTIMATE.
TBL 3-9 (9110/91)
EA188
11/14/90
SOU
IOU
sou
sou
IOU
IOU
IOU
IOU
IOU
sou
sou
IOU
IOU
IOU
SOU
IOU
IOU
IOU
IOU
IOU
IOU
2OU
IOU
IOU
IOU
IOU
IOU
IOU
IOU
IOU
IOU
IOU
EA200 EA193 EA201 EA194 EA202 EA203
11/16190 11/15/90 11/16190 11/15/90 1 t/U!J90 11116/90
.• ,\ .... ·. ·•··"''' sou sou sou sou sou sou
IOU IOU ., IOU IOU IOU IOU
sou sou sou sou sou sou
sou sou sou sou sou sou
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
sou sou sou sou sou sou
sou sou sou sou sou sou
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
sou sou sou sou sou sou
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
2OU 2OU 2OU 2OU 2OU 20U
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU 7J IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
IOU IOU IOU IOU IOU IOU
- -- -
Gs-GW--...-.Gs-GW-PZ-1 -..Gs-GW-7S
ER192 EA185 ERHn
11/15/DO 11/15/90 11/14/90
:illND SPLIT
OFGW-1S
·;-., .· .. ,:·•c· .
sou 50U sou
IOU IOU IOU
sou sou sou
50U sou sou
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
50U sou sou
50U sou sou
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
sou sou sou
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
20U 2OU 20U
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
IOU IOU IOU
---- -- - - - - - ---- - - --
w
I .c,.
·N
TABLE3-10
PHASE 2 STEP 1 GROUND WATER SAMPLES-TCL PESTICIDES
GEIGY CHEMICAL CORPORATION SITE
SAMPLE ID; AGS-GW-WSW AGS-GW-1S AGS-GW-1D AGS-GW-2S AGS-GW-3S AGS-GW-4S AGS-GW-4D AGS-GW-55 AGS-GW-8S AGS-GW-80 GS-GW-PZ-1 AGS-GW-7S
LAB NUMBER; ER187 ER190 ER188 ER200 ER193 ER201 ER194 ER202 ER203 ER192 ER195 ER-191
SAMPLE DATE; 11/14/90 11/14/90 11/14/90 11/16/90 11/15190 11/16/90 11/15190 11/16190 11/16/90 11/15/90 11/15/90 11/14/90
COMMENTS; ATER SUPPLY BLIND SPLIT
3 1 s 38
BETA-BHC 0.1U 5 0.7 3 0.1U 12 12
DELTA-BHC 0.1U 0.1U 0.1U 4 0.1 6 o.,u 12 29 0.1U 0.1U 0.1U
GAMMA-BHC 0.1U 0.1U 0.1U 3 0.4 0.5 0.1U s 30 0.1U 0.1U 0.1U
HEPTACHLOR 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U o.su o.su D.1U 0.1U 0.1U
ALDRIN 0.1U 0.1U 0.1U 0.1U 0.1U 0.1 0.1U 0.4J 0.5U 0.1U 0.1U 0.1U
HEPTACHLOR EPOXIDE 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U o.su 0.5U 0.1U 0.1U 0.1U
ENDOSULFAN I 0.1U 0.1U o.,u 0.1U 0.1U 0.1U 0.1U 0.5U 0.5U 0.1U 0.1U 0.1U
DIELDRIN 0.1U 0.1U 0.1U 0.1U 0.1U 0.2 0.1U 0.4J 1U 0.1U 0.1U 0.1U
4.4'-DDE 0.1U 0.1U o.,u 0.1U 0.1U 0.1U 0.1U 1U 1U 0.1U 0.1U 0.1U
ENDRIN 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 1U 1U 0.1U 0.1U 0.1U
ENOOSULFAN II 0.1U 0.1U O.tU 0.1U 0.1U o.tU 0.1U 1U 1U 0.1U 0.1U 0.1U
4,4'-000 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 1U 1U 0.1U 0.1U 0.1U
ENOOSULFAN SULFATE 0.1U 0.1U 0.1U 0.1U 0.1U O.tU 0.1U 1U 1U 0.1U 0.1U 0.1U
4,4'-0DT 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 0.1U 1U 1U 0.1U 0.1U 0.1U
METHOXYCHLOR o.su o.su 0.SU o.su 0.SU o.su 0.5U 5U SU 0.5U o.su o.su
ENDRIN KETONE 0.1U 0.1U 0.1U 0.4 0.1U 0.2 0.1U 0.8J 0.8J 0.1U 0.1U 0.1U
ALPHA-CHLORDANE 0.5U 0.SU 0.5U o.su 0.SU 0.5U o.5U SU SU 0.5U o.su o.su
GAMMA-CHLORDANE 0.5U o.su 0.5U 0.5U 0.5U 0.SU 0.SU SU SU 0.5U o.su o.su
TOXAPHENE 1U 1U 1U 10 0.8J 5 1U 10U 10U 1U 1U 1U
AAOCLOR-1016 o.su 0.5U o.su o.su o.su 0.SU o.su 5U SU 0.5U o.su o.su
AAOCLOR-1221 0.5U 0.SU o.su 0.5U 0.5U 0.SU o.su 5U 5U o.su o.su o.su
AAOCLOA-1232 o.su 0.5U o.su 0.SU o.su o.su o.su SU SU o.su o.su o.su
AROCLOR-1242 0.5U o.su o.su 0.SU 0.SU o.su o.su SU 5U o.su 0.SU 0.5U
AROCLOA-1248 0.5U o.su o.su o.su o.su 0.SU 0.5U 5U SU 0.5U 0.5U 0.SU
AROCLOA-1254 1U 1U 1U 1U 1U 1U 1U 10U 10U 1U 1U 1U
AROCLOA-1260 1U 1U 1U 1U 1U 1U 1U 10U 10U 1U 1U 1U
NOTES; DATA HAS BEEN VALIDATED. RESULTS IN UG/L.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
J • QUANTITATIVE ESTIMATE.
/
TBL 3-10 (9/10/91)
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~ 'i I ;; /;
\
// .//
// // wooos // u
// /1/ -I
//
/If --MW-2S ~ ; I o.-BHC = 3 BOOY SHOP E] 1/ b-BHC = 5
!IW-3S I I d-BHC = ◄
g-BHC = 3
o-BHC = I I I EK = 0.-4 '
b-BHC = 0.7 f( T□X = 10 " d-BHC = 0,1 l
g-BHC = 0,4 , r L--j ,(",/ • I MW-1S I MW-10
TCX = O.BJ . . ND ND
// \; • .
• . ~ 1-I I STATE H\QiWAY 2:11 -I ,::: :::. ( :,,.
:1f. 11\Qi'll,.1 Z'' ----or: ------t'w-lD •
JHIJ-3S I PZ 1 I J -<:!'"·~~-~---( ---.. " ""= --~ " st'-ND ,_ -------= = DECO~ -....__ \, '\ '\HIJ-IS .,,.,.
~-1
P>D
i t ori1/a: h TANK P>DI
,_ FORMm I '\. '\ v-• \ -=-· I WAR£HaiS£ A 1 · \ '\. ~ "\ co PM, CH.l') (CONCR£1E: PAO ONLY) "i W'S# • . A8ERoEEN AND R0CXFJsH ND " '" . • RAILROAD ' I \lfJJ. ~ ' ~ . . "-'\ ~"T!D PR9PERry LINE MV-6~-6D ' I '\\ ~ !IW 6D . • \ ND M,5S I • ..... ~IJ-◄D
\ " MIJ--4~ !IW--4D !IW 6S --., '\ ND --.::::::: o-BHC = 36 !IW-5S
b--BHC = 12
ct--BHC = 29 a.-BHC = 5 !IW-4S
g-BHC = 30 b-BHC = 12 o-BHC = I EK = 0.6J d-BHC = 12
g-BHC = 5 ' b--BHC = 3
" Aldrin = O.◄J d-BHC = 6 ~ .:::---'-Di.ldnn = 0.-4J g-BHC = O.S
EJ( = 0.SJ Aldrrl = 0.l '-'-I Dleldr!n = 0.2 ,---.... I '-'-El( = 0.2
'-'-TDX = 5 '----.... --..._--... WOODS '-'-0 80
'-" '-' I I " ' ' " SCALE IN FEET
) ', KEY LEGEND -a.-BHC = o.lphCL-BHC (Btrnz•M H•xa.chlor-td•> FIGURE 3-11. PHASE 2 STEP 1 GROUND WATER
tt-BHC = blrto-BHC MIJ-6SS LPP£RMD$T MIJlF'£R taaTl]R VEL1. ANALYSES PESTICIDES, NOVEHBER, 1990
d-BHC = <Nlto-BHC
M\J-6~ GEIGY CHEMICAL CORPORATION SITE g-BHC = gOJ'IPIQ-BHC SECIJND AIIUIFDI JOaTlll 'w'EI..L. ABERDEEN, NORTH CAROIJNA El( = Endrln Ke-ton•
TDX = Toxciptwn. PZ-lf) THIRD AIIUIFDI IOITTtlR 'w'EI..L. -ND = Not Det.-cted o.t th• Detection L!Jotrt
WSW -On-Site Wat«~ WeU I ; mGJ ; J --ERM-SOUTHEAST, INC . R-,ita In uQ/1
3-43
---- - ----
TABLE 3-11
PHASE 2 STEP 1 GROUND WATER SAMPLES-TAL METALS
GEIGY CHEMICAL CORPORATION SITE
- --- --
SAMPLE ID: AGS-GW-WSW AGS-GW-1S AGS-GW-1D AGS-GW-2S AGS-GW-3S AGS-GW-4S AGS-GW--4D AGS-GW-5S AGS-GW--6S AGS-GW--60 •GS-GW-PZ-1 AGS-GW-7S
LAB NUMBER: EA187 EA190 ER188
~ UI"\ I~=
COMMENTS:
=-···:.:'·
: . CONSTITUENT ,< :
ALUMINUM
ANTIMONY
ARSENIC
BARIUM
BERYLLIUM
CADMIUM
CALCIUM
CHROMIUM
COBALT
COPPER
IRON
LEAD
MAGNESIUM
MANGANESE
MERCURY
NICKEL
POTASSIUM
SELENIUM
SILVER
SODIUM
THALLIUM
VANADIUM
ZINC
CYANIDE
1 II l"tf,C,V 1 II l"tl,C,V
wATER SUPPLY
WELL
35.0U
26.0U
1.0U
3.18
2.0U
5.4
531
4.0U
16.0U
1180
4790J
51.08
2468
42.2J
0.20U
17.0U
570U
1.0U
4.0U
2010
1.0U
13.0U
936
10.0U
172
28.0U
1.0U
13.38
2.0U
4.0U
438
4.8
18.0
12.0U
955J
1.0U
4818
13.3B
0.20U
17.0U
706
1.0U
4.0U
8150J
1.0U
13.0U
19.7
10.0U
NOTES: DATA HAS BEEN VALIDATED. RESULTS IN UG/L.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
8 • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
J • OUANTIT A TIVE ESTIMATE.
TBL 3-11 (9/10/91)
7620
26.0U
2.28
25.88
2.0U
4.0U
3370
9.5
22.7
12.0U
4280J
10.2
1540
91.2J
0.20U
17.0U
875
2.2
4.0U
4620J
1.0U
13.0U
69.3
10.0U
EA200 EA193
17100 8660
26.0U 26.0U
1.0U 1.0U
284 78.6
2.0U 2.0U
4.0U 4.0U
37600 26500
4.0U 4.3
16.0U 16.0U
12.0U 23.9
84.3J 36.7J
1.8B 2.1B
14200 3800
104 61.2J
0.20U 0.20U
17.0U 17.0U
71400 21900
1.2 1.2
4.0U 10.68
12000J 9120J
t.OU l.OU
13.0U 13.0U
236 243
10.0U 10.0U
EA201
1040
26.0U
1.0U
13.48
2.0U
4.0U
918
6.5
16.0U
12.0U
3290J
1.0U
745
11.2B
0.20U
17.0U
1010
1.0U
4.0U
6030J
1.0U
38.0
11.9
10.0U
ER194 ER202 EA203
l u,o,= l "•~= l "
ER192 EA195
'
EA191
' " BLIND SPLIT
OF GW-1S
3650 972 48.3 214 2570 171
26.0U 26.0U 26.0U 26.0U 26.0U 26.0U
2.68 1.0U 1.0U 1.0U 2.0 3.58
22.18 15.68 156 13.28 31.08 8.18
2.0U 2.0U 2.0U 2.0U 2.0U 2.0U
5.9 5.3 7.6 4.0U 4.0U 4.0U
4410 2650 49800 1010 7640 3698
4.0U 4.0U 4.0U 4.0U 4.0U 4.0U
16.0U 16.0U 16.0U 16.0U 25.0 16.0U
12.0U 12.0U 12.0U 12.0U 14.9 12.0U
2180J 20.0U 20.0U 78.0J 1750J 550J
9.2 1.0U 1.4B 1.0U 2.0B 2.88
1410 1610 18100 620 1120 4048
118J 16.0B 44.0J 14.78 157J 9.98
0.20U 0.20U 1.0J 0.20U 0.20U 0.20U
17.0U 17.0U 17.0U 17.0U 17.0U 17.0U
570U 3200 160000 869 881 744
2.5 1.0U 2.4 1.0U 1.0 3.7
4.0U 4.0U 4.0U 4.0U 4.0U 5.38
5070J 4270J 12900J 2780J 13600J 7560J
1.0U 1.0U 1.0U 1.0U 1.28
13.0U 13.0U 15.4 13.0U 13.0U 13.0U
37.1 43.8 579 32.4 43.9 15.8
10.0U 10.0U 10.0U 10.0U 10.0U 10.0U
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3.6.3.1 Field Parameters
Specific conductance, pH, temperature and turbidity measurements
are summarized in Table 3-12 and illustrated on Figure 3-12. As
indicated, specific conductivity in the shallow wells ranged from
14 umhos/cm at MW-8S to 84 umhos/cm in MW-l0S. The pH measurements
ranged from 4.3 in MW-13 to 6.9 in MW-l0S. Turbidity ranged from
8.9 NTUs in MW-l0S to 78 NTUs in MW-7S.
The specific conductivity in the intermediate wells ranged from 24
umhos/cm in the PMP Well to 81 umhos/cm in the upgradient MW-14D.
The values for pH ranged from 4. 0 in the PMP Well to 7. 1 in
upgradient well MW-14D. Turbidity ranged from 80 NTUs at MW-6D to
600 NTUs at MW-15D. Temperature measurements of all the wells
ranged between 17.0°C and 19.1°C.
3.6.3.2 TCL Volatiles
The primary purpose of sampling for volatile organic constituents
was to determine if trichloroethene indicated in on-site
intermediate wells during the Phase 2, Step 1 ground water
investigation was originating from an off-site source. Three deep
wells, MW-1D, MW-14D and MW-15D, installed upgradient of the Site,
were sampled. Two upgradient private wells (i.e., Allred and PMP)
were also sampled. The analytical results are summarized in Table
3-13 and illustrated on· Figure 3-13.
Trichloroethene was detected in both private wells which are
hydraulically upgradient of the site. The PMP Well indicated
trichloroethene at 360 ug/1 and the Allred well at 72 ug/1.
Trichloroethene was also detected in Site wells MW-4D and MW-6D at
concentrations of 160 ug/1 and 47 ug/1, respectively.
Trichloroethene was detected in PZ-1 during the Phase 4, Step 2
sampling at an estimated concentration below the method detection
limit at 8 ug/1. However, trichloroethene was not detected in PZ-1
during the Phase 2, Step 1 sampling. The Phase 2, Step 1
trichloroethene results for MW-4D and MW-6D were in the same range
as those detected in the Phase 2, Step 1 study (i.e., 200 ug/1 in
MW-4D and 11 ug/1 in MW-6D). Trichloroethene was not detected in
any of the shallow wells.
3.6.3.3 TCL Pesticides
The Phase 4, Step 2 pesticide results are summarized on Table 3-14.
Pesticides were not detected in the shallow wells north of the Site
(i.e., MW-7S, MW-8S and MW-9S) or in the USGS well downgradient of
the Site. Pesticides were detected in two wells: MW-l0S and MW-
11D. Both wells are located south of the site and appear to be on
a hydraulic gradient parallel to the site. Total pesticide
concentrations in MW-10S were 36.3 ug/1 and in MW-11D were 39.7
ug/1.
3-45
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TABLE 3-12
PHASE 4, STEP 2 GROUND WATER INVESTIGATION
FIELD PARAMETER DATA -JULY 1991
GEIGY CHEMICAL CORPORATION SITE
Wfu
0
t~~~~ 0«~~~£0 •I i;l !it!!:~~~~r~
MW-7S 43
MW-88 14
MW-9S 43
MW-10S 84
MW-12S 26
MW-13S 34
MW-10 31
MW-4D 27
MW-6D 33
MW-11D 48
MW-14D 81
MW-15D 44
PZ-1 30
ALLRED 29
PMP 24
USGS-02-03 29
NOTES:
PMP a POWDER METAL PRODUCTS WELL
NA a NOT ANALYZED
ntu a NATURAL TURBIDITY UNITS
TABLE 3-12(9/10/91)
4.9 17.3
5.6 18.0
5. 1 18.8
6.9 17.4
5.1 18.0
4.3 17.0
4.2 17.5
5.6 18.6
5.0 18.2
4.9 17.0
7.1 19.1
5.8 18.9
6.2 19.0
4.9 18.2
4.0 18.5
4.3 18.0
3-46
·l I IHi IUI IY.-C::: . : .·.•
:,::·, ;_:,. ·_\• \}:;::::1:::::1):::
78
15
29
8.9
35
16
160
380
80
240
230
600
NA
NA
NA
NA
Ii
r-11
11·
Ii
I!
I:
I:
0
--......:
KEY
MW-tJS
SC • 34
pH -4.J
TE.YP • i7.0
TURB : 16
SC • SPEC:F1C CONOUCTlVTTY -umno~/ cm pri • STANDARD UNITS
TEMP • TEMPERATURE (°C)
TURB "" TIJRBIOITY -tn'US
NA • NOT ANAL ¥ZED
p~p .. POWDER MET PJ.. PRODUCTS 'NEU
USCS-02-0J
SC = 29
pH -4.J
TEMP • 1S.O
nJRB • t-lA
MW-7S
SC "" -4J
pH "' 4.9
ITl,IP • 17.J
TURB =-78
SC "' 30
pH • 6.2
TE.i.tP • 19.0
TURB "' NA
T
1.AW-12S
SC "" 26
p:-t • 5.1
TE.\JP • 18.0
TI.!RB • JS
60
MW-85
SC• H
pH • 5.5
TEMP ,. 18.0
TURB =-15
Q __ ~
0
I.IW-60
SC • JJ
pH • 5.0
TEMP • 18.2 TURB .., 60
l
l,fN-110
SC • 48
pH • 4.9
TE.I.IP "' 17.0
iURB -240
60 120 180
MW-9S
SC "" 4J
pH • 5.1
TBIP • 18.8
TURB • 29
♦
MW-10S
SC • M
pH • 6.9
TE.\4P • 17.4
TURB =-8.9
SC • 27
MW-10
SC -31 pH .,. 4.2
TD,IP "' 17.5
nJRB -160
pH = 5.6
~p • 18.6
TURB -JBO
l
!/
//
MW-140
SC "" 81
pH • 7.1
TEMP • 19.1 nJRe .. 2.:so
\
PMP
SC • 24
pH "' 4.0
T0.4P = 18.5
TURB = NA
♦
N
'AIW-150
SC • 29
pH • +.9
TEMP = 1B.2 TIJRB .. NA
FIGURE 3-12. PHASE 4 STEP 2 GROUND WATER
ANALYSES -FIELD PARAMETERS, JULY 1991
GEIGY CHEMICAL CORPORATION SITE
ABERDEEN, NORTH CAROIJNA
(31{~ ERM-SOUTHEAST, INC
3-47
-
w I
"" CXl
---- -
SAMPLE ID:
LAB NUMBER:
SAMPLE DATE:
COMMENTS:
-·--- - -
TABLE3-13
PHASE 4 STEP 2 GROUND WATER SAMPLES-TCL VOLATILES
GEIGY CHEMICAL CORPORATION SITE
--
AGS-GW-10 AGS-GW-4D AGS-GW-60 AGS-GW-7S AGS-GW-8S AGS-GW--IIS
0249530 0248916 0249610 0249173 0249599 0249211
7112/91 7/11/91 7/12/91 7/10/91 7/12/91 7/10/91
---
AGS-GW-10S ,GS-GW-PZ-1
0249190 0248894
7/10/91 7/11/91
I /<• .. //\i \.· ····• T i · .. ·•. .. ··•· ·:···•. •· ·.. . > ' ... .•·.•.
. . . ····•·····•·•·······•·•··•···········)\\•••··.• .....•••.•.•.•.••.•••• ) •.••.•• 2••·····•······•}··••·••·•···· ·•···•··•·•·····•·········. •··•·•
} i ........ } . . i'"::'."'.~"• •· • i >··• << ... · iY·< > .. ·. .. ·,·. . _.· _,: __ , :.-;.\/:
CHLOROMETHANE 10U 10U
BROMOMETHANE 10U 10U
VINYL CHLORIDE 10U 10U
CHLOROETHANE 10U ,ou
METHYLENE CHLORIDE 10U 10U
ACETONE 10U 10U
CARBON DISULFIDE 10U '10U
1, 1-DICHLOROETHENE 10U
1, 1-0ICHLOROETHANE 10U
1,2-DICHLOROETHENE(TOTAL) 10U
CHLOROFORM 10U
1,2-DICHLOROETHANE 10U
2-BUTANONE 10U
1, 1,1-TRICHLOROETHANE 10U
CARBON TETRACHLORIDE 10U
BROMODICHLOROMETHANE 10U
1,2 DICHLOROPROPANE 10U
CIS-1,3-DICHLOROPROPENE 10U
TRICHLOROETHENE 10U
DIBROMOCHLOROMETHANE 10U
1, 1,2-TRICHLOROETHANE 10U
BENZENE 10U
TRANS-1,3-0ICHLOROPROPENE 10U
BROMOFORM 10U
4-METHYL-2-PENTANONE 10U
2-HEXANONE 10U
TETRACHLOROETHENE 10U
1, 1,2,2-TETRACHLOROETHANE 10U
TOLUENE 10U
CHLOROBENZENE 10U
ETHYLBENZENE 10U
STYRENE 10U
XYLENE (TOTAL) 10U
NOTES: RESULTS IN UG/L. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
J = QUANTITATIVE ESTIMATE.
TBL 3-13 (9/10/91)
10U
10U
10U
10U
10U
10U
10U
10U
,ou
10U
10U
160
10U
10U ,ou
10U
10U
10U
10U
10U
10U
10U
10U
10U
10U
10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 48 10U 10U 208
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
47 10U 10U 10U 10U 8J
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U IOU 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U ,ou 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U 10U
10U 10U 10U 10U 10U ,ou
10U 10U 10U ,ou 10U 10U
--
-
w
I
,I>
'°
----- - --- --- --TABLE 3-13 (continued)
PHASE 4 STEP 2 GROUND WATER SAMPLES -TCL VOLATILES
GEIGY CHEMICAL CORPORATION SITE
SAMPLE ID: AGS-GW-11D AG$-GW-12S AGS-GW-13S AGS-GW-14D AGS-GW-150 AGS-ALLRED AGS-PMP
LAB NUMBER: 0249670 0249203
SAMPLE DATE: 7/12/91 7/10/91
COMMENTS:
CHLOROMETHANE
BROMOMETHANE 10U
VINYL CHLORIDE 10U
CHLOROETHANE 10U
METHYLENE CHLORIDE 10U
ACETONE ,ou
CARBON DISULFIDE 10U
1, 1-0ICHLOROETHENE 10U
1, 1-0ICHLOROETHANE 10U
1,2-0ICHLOROETHENE(TOTAL) 10U
CHLOROFORM 10U
1,2-DICHLOROETHANE 10U
2-BUTANONE ,ou
1, 1, 1-TRICHLOROETHANE 10U
CARBON TETRACHLORIDE 10U
BROMODICHLOROMETHANE 10U
1,2 DICHLOROPROPANE 10U
CIS-1,3-DICHLOROPROPENE 10U
TRICHLOROETHENE 10U
DIBROMOCHLOROMETHANE 10U
1, 1,2-TRICHLOROETHANE 10U
BENZENE 10U
TRANS-1,3-DICHLOROPROPENE 10U
BROMOFORM 10U
4-METHYL-2-PENTANONE 10U
2-HEXANONE 10U
TETRACHLOROETHENE 10U
1, 1,2,2-TETRACHLOROETHANE 10U
TOLUENE ,ou
CHLOROBENZENE 10U
ETHYLBENZENE 10U
STYRENE 10U
XYLENE (TOTAL) 10U
NOTES. RESULTS IN UG/l. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
J • OUANTIT ATIVE ESTIMATE.
TBL 3-13 (9110191)
10U
,ou
10U
10U
10U
10U
,ou
10U
10U
10U
10U
10U
10U
10U
10U
10U
10U
10U
10U
10U
,ou
10U
,ou
,ou
10U
10U
10U
10U
10U
10U
10U
10U
0249181 0248908 0249726 0249645 0248886
7/10/91 7/11/91 7/12/91 7/12/91 7/11/91
'RIVATE WELL >RIVATE WELi
10U ,ou ,ou
10U 10U 10U 10U 10U
10U 10U ,ou 10U 10U
10U 10U 10U 10U 10U
10U 10U 10U 10U 1B
10U 19B 598 21B
10U 10U 10U 10U 10U
10U 10U ,ou 10U ,ou
10U 10U 10U 10U 10U
10U 10U 10U 10U 10U
10U ,ou ,ou 10U 10U
10U 10U 10U 10U ,ou
10U 10U 10U 10U 15
10U 10U 10U 10U 1J
10U ,ou 10U 10U ,ou
10U 10U 10U 10U
10U 10U 10U 10U 10U
10U 10U 10U 10U 10U
10U 10U 10U 72 360
10U ,ou 10U 10U 10U
10U 10U 10U ,ou 10U
10U 10U 10U 10U 10U
10U 10U 10U 10U 10U
,ou 10U 10U 10U 10U
10U 10U 10U 10U 2J
,ou 10U ,ou 10U 10U
10U 10U 10U 10U ,ou
10U 10U 10U 10U 10U
,ou 10U ,ou 10U 2J
10U 10U 10U ,ou
10U 10U 10U 10U 10U
,ou 10U 10U 10U 10U
10U 10U 10U 10U
--- -
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0 v
CJ
WOODS
KEY
RESULTS IN ug/1
?MP .. POWDER METAL PRODUCTS WELL
ND "" NOT DITTCTED AT THE DETECTION LIMIT
NA -NOT ANALY2ED
TCE "' TR!CHLOROETHENE
ACET "' ACETONE
o-3HC ::a olpho BHC
b-3HC :a beta BHC
d-8HC = delta BHC
g-BHC = gommo. BHC
DIEL -OIEI..DRJN •
ODE "" "4,"4'-0DE
METHO ,,. METHOXYCHLOR
2-BUT • 2-BUTANONE
EK = ENOR!NE KETONE
HE = HEFTACLOR EPOXIDE
1, 1, 1-TCA • 1, 1, 1-TRICHLOROETHANE
"4-M-2-P • 4-METHYL-2-PENTANONE
rDL ,. TOLUENE
J = QUANTTTAllVE ESTIMATE
USGS-02-01
USGS-02-0J
VOLATILES:
NA
PEST:
ND
MW-7S
VOLATIL£S:
ND
PEST: ND
MW-US
VOLATILES: NO
PEST: ND
'''''"
PZ.-1
VOLATILES: TCE•SJ
PEST:
NA
♦
I
MW-12S
OLATILES:
ND
PEST: ND
.,
MW-110
VOLATILES: ND
PEST:
o-BHC.a16
b-BHC-7 d-BHC.a-4
g-BHC ... 11
0IEL=0.3
EK=0.-4J
.,
MW-8S
VOLATILES: ND
PEST: ND
'"'
SCAI..£.: AS SHOWN
MW-60
VOLATILES: TCE•47
PEST:
NA
100 FT.
1
MW-10S
VOLATILES:
NO
PEST:
a-BHC•2
b-BHC=25
d-BHC•2
g-BHC•O.BJ
OIEL=2 EK-• HE=0.2J
0DE=0.2J
MW-9S
VOLATILES: NO
PEST: NO
MW-4D
VOLATILES:
TCE=-160
PEST:
NA
MW-10
VOLATILES: NO
PEST:
NA
PMP
MW-HO
VOLATILES:
NO
PEST: NO
VOLATILES:
2-8UTm15
TCE=.360
1,1,1-TCA=lJ
4-~-2-P=2J
TOL=2J
PEST:
NA
VOLATILES: ND
PEST: NO
ALLRED
VOLATILES:
TCE=72
PEST:
NA
FIGURE 3-13. PHASE 4 STEP 2 GROUND WATER
ANALYSES -VOLATILES AND/OR PESTICIDES
DETECTED CONSTITUENTS, JULY 1991
GEIGY CHEMICAL CORPORATION SITE
. I ABERDEEN, NORTH CAROLINA
(1ffi] ERM-SOUTHEAST, INC
3-50
--- - -
SAMPLE ID: AGS--GW-7S AGS-GW-8S
0249173 0249599
7/10/91 7/12/91
BETA-BHC 0.1U
DELTA~HC 0.1U 0.1U
GAMMA-BHC 0.1U 0.1U
HEPTACHLOR a.tu 0.1U
ALDRIN O.tU a.tu
HEPTACHLOR EPOXIDE O.tU 0.1U
ENOOSULFAN I 0.1U 0.1U
DIELDRIN 0.1U 0.1U
4,4'-DDE a.tu D.1U
(.,J ENDRIN 0.1U a.tu I en ENOOSULFAN II 0.1U 0.1U
"-' 4,4·-000 0.1U 0.1U
ENDOSULFAN SULFATE 0.1U 0.1U
4,4'-DDT 0.1U 0.1U
METHOXYCHLOA 0.5U 0.SU
ENDAIN KETONE 0.1U 0.1U
ENDAIN ALDEHYDE 0.1U 0.1U
ALPHA-CHLORDANE 0.1U 0.1U
GAMMA-CHLORDANE 0.1U 0.1U
TOXAPHENE SU SU
AAOCLOR-1016 1U ,u
AROCLOR-1221 1U 2U
AROCLOA-1232 2U 1U
AAOCLOR-1242 1U 1U
AROCLOR-1248 1U 1U
AROCLOR-1254 1U ,u
AROCLOR-1260 1U ,u
NOTES: DATA HAS BEEN VALIDATED.
RESULTS IN UG/L
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
J = QUANTITATIVE ESTIMATE.
TBL 3-14 (9/10/91)
-- - - -- -
TABLE 3-14
PHASE 4 STEP 2 GROUND WATER SAMPLES-TCL PESTICIDES
GEIGY CHEMICAL CORPORATION SITE
AGS-GW-9S AGS-GW-10S AGS-GW-11O AGS-GW-12S AGS-GW-13S
0249211 0249190 0249670 0249203 0249181
7/10191 7/10191 7/12/91
0.1U 0.1U 0.1U
0.1U 2 4 0.1U 0.1U
0.1U 0.8J 11 0.1U 0.1U
0.1U 0.1U 0.1U 0.1U O.tU
D.1U a.tu 0.1U O.tU 0.1U
O.tU 0.2J 0.1U 0.1U a.tu
O.tU O.tU a.tu 0.1U 0.1U
a.tu 2 0.3 a.tu 0.1U
0.tU 0.2J 0.1U O.tU O.tU
O.tU O.tU 0.1U O.tU a.tu
0.1U 0.1U 0.1U 0.1U 0.1U
o.,u 0.1U 0.1U 0.1U 0.1U
0.1U 0.1U 0.1U 0.1U 0.1U
0.1U 0.1U 0.1U 0.1U 0.1U
0.5U 0.1U 0.1U O.SU 0.SU
0.1U 4 0.4J 0.1U 0.1U
0.1U 0.1U 0.1U 0.1U 0.1U
0.1U 0.10 0.1U 0.1U 0.1U
0.1U 0.1U 0.1U 0.1U 0.1U
SU SU SU SU SU
1U 1U 1U 1U ,u
2U 2U 2U 2U 2U
1U 1U 1U 1U 1U ,u 1U 1U 1U 1U
1U 1U ,u ,u 1U
1U 1U 1U ,u 1U ,u ,u 1U 1U 1U
- --- - -
AGS-GW-140 AGS-OW-15D USGS-02-03
0248908 0249728 0249173
D.1U 0.1U 0.1U
0.1U 0.1U 0.1U
0.1U 0.1U 0.1U
0.1U 0.1U 0.1U
0.1U 0.1U 0.1U
O.tU a.tu a.tu
0.1U 0.1U 0.1U
a.tu O.tU 0.1U
0.1U a.tu 0.1U
0.1U O.tU 0.1U
0.1U 0.1U 0.1U
0.1U 0.1U 0.1U
0.1U 0.1U 0.1U
0.1U 0.1U 0.1U
0.SU 0.SU O.SU
0.1U 0.1U o.,u
0.1U 0.1U 0.1U
0.1U 0.1U 0.1U
0.1U 0.1U 0.1U
SU SU SU
1U 1U ,u
2U 2U 2U
1U 1U ,u
1U 1U ,u
1U 1U 1U
1U 1U 1U
1U 1U 1U
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4.0 SOIL INVESTIGATIONS
4.1 General
An investigation of surface and subsurface soils was conducted in
accordance with the procedures outlined in Task 11 of the approved
RI/FS Work Plan (1). The investigation consisted of an initial
removal conducted in February and October, 1989, four sampling
phases to delineate the vertical and horizontal extent of
contamination and a second removal conducted during March-April
1991. Phase 1 of the sampling provided a definition of Site
specific parameters; Phase 2 defined the horizontal extent of
contamination; Phase 3 delineated the vertical extent of
contamination; and, Phase 4 provided additional information to fill
in gaps in the data. The following sections provide a description
of soil types, sample locations and analytical results for each
sampling phase as well as a description of the removal actions.
The second removal (March-April 1991) was undertaken based on
concentrations of pesticides indicated during the four phases of
soil sampling. In order to provide a clear understanding of the
existing site conditions, only those data representing current
conditions at the site are presented in the RI report. Site
conditions prior to the March-April 1991 removal are discussed in
the Field Activities Report presented as Appendix 4. The soils
data presented in the RI report provide the basis for development
of the Feasibility Study and Risk Assessment.
4.2 Soil Description
Surface soils include soils occurring from ground level to a
maximum depth of one foot. surface soils at the Site are composed
primarily of loose to medium compact, gray to light and dark brown
sand and silty sands. The total silt content in the surface soils
ranges from 20% to 30%. Sands are generally well-sorted and
medium-to fine-grained. Natural material is present throughout the
surface soils.
Subsurface soils, encountered at a depth of one to ten feet below
grade, are primarily composed of medium-compact to stiff,
multicolor (i.e., brown, white-tan, orange-brown, rust, red-brown),
silty sands and clayey sands. The total silt and clay content in
the subsurface soils ranges from 10% to 50%. The sand is generally
poorly sorted and fine-to coarse-grained. Pebbles, up to 0.25
inches in thickness, occur locally throughout the subsurface soils.
4.3 Initial Removal (February and October. 1989}
A Site reconnaissance, conducted during January 1989, identified
obvious areas of pesticide contaminated surface soils near the
warehouse loading doors and railroad dock. A two-phase soil
removal action, approved by EPA, was conducted at the Site to
remove the obvious areas of contaminated soils and debris. Two
reports documenting the February and October 1989 removals were
4-1
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submitted to EPA (3). As shown in Figure 4-1, the areas designated
for removal were generally located near the access doors to the
warehouses. The initial removal was conducted in February 1989 by
GSX Services, Inc. Visually contaminated soils from areas A, B &
C were removed and sent to the GSX Landfill in Pinewood, SC for
disposal as hazardous waste. In addition, railroad ties removed
from the Area C spur track were disposed with the soils. (The
steel rails were stockpiled for future use by the railroad). Area
D was omitted from the removal action since removal from this area
was expected to result in erosion concerns. A total of 462 tons of
waste were disposed.
In early February 1989, the Governor of South Carolina issued an
executive order which precluded any hazardous waste from the State
of North Carolina to be disposed in South Carolina after March 1,
1989. Consequently, the PRPs decided that an accelerated action
should be pursued to execute the removal prior to March 1, 1989.
This action was a major effort involving several parties. A
critical approval involved the State of South Carolina. A standard
time allotment of 14 calendar days is required for state approval
both for land disposal and incineration. Since the bulk of the
soils were intended for land disposal, attention focused on
approval for that aspect of the plan. It was expected that the
contractor, GSX, could store the containerized soils intended for
incineration at the ThermalKem facility in Rock Hill, S.C.
However, ThermalKem had a substantial backlog of materials for
incineration and stoarge periods would be significant.
Incineration of the soils prior to the south Carolina disposal ban
deadline was, therefore, impossible. The only solution was to
accumulate and store several containers at the site until
appropriate approvals could be obtained.
EPA representatives expressed their extreme concern about any
stoarge of excavated materials in containers on-site. EPA would
agree to allow the PRPs to store these containers on-site for a
matter of days, but any term beyond two to three days would be
totally unacceptable. The PRPs contacted other incinerators and
found that on-site storage for four to eight weeks would also be
required due to their backlog.
on February 23, 1989, the PRPs submitted a letter to EPA which
stated that all excavated soils would be mixed for land disposal at
GSX's Pinewood, SC facility. EPA representatives expressed a
further concern regarding the regulatory controls on land disposal
of the wastes in question. After several conference calls with the
EPA project manager and EPA council, it was finally agreed that
there were no regulatory restraints or concentration limitations
and the initial soil removal could proceed. However, the delays
resulted in completion of only a portion of the planned removal
prior to the March 1, 1989 disposal ban. Once legal issues with
respect to the ban of North Carolina wastes were resolved, the
remaining wastes were removed.
4-2
-------------------
DOOR 5
DOOR 6
WAREHOUSE 8
DOOR 3 DOOR 2
WAREHOUSE A
DOOR 1
MAIN RAILROAD TRACK
LEGEND
~ AREAS DESIGNATED FOR REMOVAL
0 30 60
SCALE IN FEET
nGURE 4-1. AREAS DESIGNATED FOR REMOVAL
FEBRUARY & OCl'OBER 1989
GEIGY CIIEIUCAL CORPORATION SITE
· ABERDEEN, NORTH CAROLINA
bl ERM-SOUTHEAST, INC
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Visually contaminated soils from Areas E, F, G and H were removed
during October 1989. Concentrated contaminated surface materials
were visually identified in each area, excavated and packaged in
six, JO-gallon fiberpack containers. This material was incinerated
at the ThermalKem facility in Rock Hill, SC. Other excavated
soils, a total of approximately 227 tons, were transported as
hazardous waste to the Laidlaw Environmental Services Landfill
(formerly GSX Services) in Pinewood, SC.
A summary of the volume of material removed from each area,
including the depth of excavation, is included in Table 4-1. After
the removal was conducted, the excavated areas were lined with a
permeable geotextile fabric and backfilled to grade with crushed
stone.
4.4 Soil Sampling
4.4.1 Phase 1 Soil Sampling and Analysis
Eleven surface soil samples were originally collected and analyzed
in accordance with the CLP for the TCL/TAL parameters. Several of
the original sampling points (SS-2, 7, 8, 10 and 11) were removed
during the March-April 1991 Removal Action. Site conditions prior
to the removal are discussed in the Field Activities Report
provided as Appendix 4 (Reference Appendix C of Appendix 4). The
purpose of this phase of sampling was to define the constituents of
concern (i.e., site specific parameters) to be analyzed in the
remaining phases.
The surface soil samples were collected from ground level to a
maximum depth of one foot. Sample locations were staked and
located by engineering survey methods for future reference. Sample
collection and analyses and equipment decontamination procedures
were in accordance with the procedures outlined in the RI/FS Work
Plan and Project Operations Plan.
The analytical results for the Phase 1 soil samples are presented
in Table 4-2 and are illustrated in Figure 4-2. Volatile and semi-
volatile constituents were not detected in concentrations above the
detection limit. Most of the metals concentrations were within the
range of the concentrations detected in the background sample (SS-
04) . Pesticides were detected in all samples including the
background sample ( SS-04) . The BHC isomers, total DDT and
toxaphene were the most prevalent pesticide compounds detected.
Two samples (SS-03 and SS-06) also contained aldrin and dieldrin.
The concentrations of total BHC, total DDT and toxaphene are
depicted on Figure 4-2. Aroclor compounds were not detected in any
sample.
Based on the results of the Phase 1 soils investigation, pesticides
were selected as the site specific parameters for analysis. In
addition, copper and zinc, which may have been present as
micronutrients in fertilizer, and lead, which had been indicated as
4-4
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A
B
C
D
E
F
G
H
TABLE 4-1
SOILS REMOVAL
SURFICIAL SOILS VOLUMES
GEIGY CHEMICAL CORPORATION SITE
FEBRUARY & OCTOBER 1989
Under Wooden Dock 15x25x4
Spur East of Bldg. 85x16x3
Spur South of Bldg. 83x22x3
Cross nes -96 ea. 8 1/2 X 0.5 X 0.5
Omitted
Door No. 1 34x 16x4.25
Door No. 3 (small dock) 19x10x2
Door No. 5 33x13x2.5
Door No. 6 (near tracks) 11.5 X 19X 2.6
1500 56
4080 151
5480 203
200 8
2310 86
380 14
1070 40
570 21
C• -
NOTE: These soil volumes were found to have a measured weight of 689 tons.
Tab 4-1 (1/14/92)
4-5
------ --------TABLE 4-2
PHASE 1 SOIL SAMPLES-TCL VOLATILES
EXISTING SITE CONDITIONS •
SAMPLE 10: SS--01 Ss--03
LAB NUMBER: ER-017 EA--019
SAMPLE DATE: 5/15/90 5116/90
LOCATION: WEST END NE CORNER
ALONG HWY. WHSE. A
IC" . ::::?: c::-·
l<•··•I•·•··•-•··}•••••••·•·
" ··· .... +. ! ·•··•· ..... •• •• ••\\ ... -···•·• ··•·· .·· >:':::,:· . .:,:.tr:'c:::-. .-<:••· ..
CHLOROMETHANE 12U 12U
BROMOMETHANE 12U 12U
VINYL CHLORIDE 12U 12U
CHLOROETHANE 12U 12U
METHYLENE CHLORIDE 6U 6U
ACETONE 18B 30B
CARBON DISULFIDE 6U 6U
1.1-0ICHLOROETHENE 6U 6U
1, 1-0ICHLOROETHANE 6U 6U
1,2-0ICHLOROETHENE(TOTAL) 6U 6U
CHLOROFORM 6U BU
1,2-0ICHLOROETHANE 6U 6U
2-BUTANONE 12U 12U
1, 1, 1-TRICHLOROETHANE 6U 6U
CARBON TETRACHLORIDE 6U OU
VINYL ACETATE 12U 12U
BROMODICHLOROMETHANE 6U 6U
1,2 DICHLOROPROPANE 6U 6U
CIS-1,3-DICHLOROPROPENE 6U 6U
TRICHLOROETHENE 6U 6U
DIBROMOCHLOROMETHANE 6U 6U
1, 1,2-TRICHLOROETHANE 6U 6U
BENZENE 6U 6U
TRANS-1,3-DICHLOROPROPENE OU OU
BROMOFORM 6U 6U
4--METHYL-2-PENTANONE 12U 12U
2-HEXANONE 12U 12U
TETRACHLOROETHENE 6U 6U
1, 1,2,2-TETRACHLOROETHANE 6U 6U
TOLUENE OU 6U
CHLOROBENZENE 6U 6U
ETHYLBENZENE 6U 6U
STYRENE 6U 6U
XYLENE (TOTAL) 6U 6U
NOTES. RESULTS REPORTED IN UG/KG. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
SS-04 SS--05
ER-014 EA--020
5115/90 5/16/90
EAST END EAST OF
IN WOODS WHSE. A
·•.·• . . ...... ·-•·
. " 14U 11U
14U 11U
14U 11U
14U 11U
7U 6U
18B 12B
7U 6U
7U 6U
7U 6U
7U 6U
7U 6U
7U 6U
14U 11U
7U 6U
7U OU
14U 11U
7U 6U
7U 6U
7U 6U
7U 6U
7U 6U
7U OU
7U 6U
7U 6U
7U 6U
14U 11U
14U 11U
7U OU
7U OU
7U OU
7U 6U
7U 6U
7U 6U
7U 6U
• SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991.
TBL 4-2A (1/14/92)
Ss--06 SS-0~ SS-12
ER-024 ER--013 ER--022
5/16/90 5/15/90 5/16/90
EASTOFWHSE NORTH OF BLIND SPLIT
A AT DOCK OFFICE OFSS--06 . r-
t1U tOU 11U
11U 10U 11U
11U 10U 11U
11U 10U 11U
6U 5U 6U
16B 6B 20B
6U SU 6U
6U SU OU
6U 6U 6U
·OU 6U 6U
6U 5U BU
6U 6U 6U
11U 10U 11U
6U 6U OU
6U 5U OU
11U 10U 11U
6U 5U OU
6U SU 6U
6U 5U OU
6U 6U OU
6U SU OU
6U SU OU
6U SU OU
6U SU OU
6U SU OU
11U 10U 11U
11U 10U 11U
6U 5U OU
OU 5U OU
6U 5U 6U
6U 6U OU
6U 5U 6U
6U 5U 6U
6U SU OU
- - -
-- -
SAM PLEID:
LAB NUMBER:
SAM PLE DATE:
LOC ATION:
--.. - - - -
S-1
ER-017
5115/91
WEST END
ALONG HWY.
TABLE 4-2
PHASE 1 SOIL SAMPLES -TCL SEMI-VOLATILES
EXISTING SITE CONDITIONS •
S-3 s-4 S-5
EA-019 EA-014 EA-020
5116191 5/15191 5116/91
Ss--08
EA--024
5116/91
NW CORNER EAST END EAST OF EASTOFWHSE
WHSE. A IN WOODS WHSE. A A AT DOCK
- - -
8$--09 SS-12
ER-013 ER-022
6/15191 6/16/91
NORTH OF BLIND SPLIT
OFFICE OFS-8
·•· \<
I?t•••II
:;·. .
l[[I•:•·•II•••I \ .•···. . .
})••·••· II 1! II III I •-•-•-•··•· rnt~t n I •: is ) ···••.· rui .-: ••·•·. :,:,-::::.·-, > \ :.: 1-::,•,,-: ·• ..
ACE NAPHTHENE 790U nou
2,4-DINITROPHENOL 4000U 3800U
4-N ITROPHENOL 4000U 3800U
DIB ENZOFURAN 790U nou
2,4-OINITROTOLUENE 790U 770U
DIET HYLPHTHALATE 790U nou
4-C HLOROPHENYL-PHENYLETHER 790U nou
FLU ORENE 790U nou
4-N ITROANILINE 4000U 3800U
4,6-0 INITR0-2-METHYLPHENOL 4000U 3800U
N-N ITROSOOIPHENYLAMINE 790U nou
4-B ROMOPHENYL-PHENYLETHER 790U nou
HEXA CHLOROBENZENE 790U nou
PEN TACHLOROPHENOL 4000U 3800U
PHE NAN TH RENE 790U nou
ANT HRACENE 790U nou
01-N-BUTYLPHTHALATE-790U nou
FLU ORANTHENE 790U nou
PYR ENE 790U nou
BUT YLBENZVLPHTHALATE 790U nou
3,3" -OICHLOROBENZIDINE 1800U 1500U
BEN ZO(a)ANTHRACENE 790U nou
CH RYSENE 790U nou
BIS( 2-ETHYLHEXYL)PHTHALATE 790U nou
DI-N--OCTYLPHTHALATE 790U nou
BEN ZO(b)FLUORANTHENE 790U nou
BEN ZO(k)FLUORANTHENE 790U nou
BEN ZO(a)PYRENE 790U nou
IND EN0(1,2,3-cd)PYRENE 790U nou
DIB ENZ(a,h)ANTHRACENE 790U nou
BEN ZO(g,h,l)PERYLENE 790U nou
NOTES: RESULTS REPORTED IN UG/KG. DATA HAS BEEN VALIDATED
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
J • QUANTITATIVE ESTIMATE.
940U
4700U
4700U
940U
940U
940U
940U
940U
4700U
4700U
940U
940U
940U
4700U
940U
940U
940U
940U
940U
940U
1900U
940U
940U
940U
940U
940U
940U
940U
940U
940U
940U
• SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991.
TBL 4-2B (1/14/92)
730U 750U 860U 740U
3700U 3800U 3200U 3700U
3700U 3800U 3200U 3700U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
3700U 3800U 3200U 3700U
3700U 3800U 3200U 3700U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
3700U 3800U 3200U 3700U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
1500U 1500U 1300U 1500U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
730U 750U 860U 740U
-- -
.£>
I
OJ
... -- - -
SAMPLE 10: SS--01
LAB NUMBER: ER--017
SAMPLE DATE: 5/15/91
LOCATION: WEST END
ALONG HWY.
---- - - -
TABLE ◄-2
PHASE 1 SOIL SAMPLES-TCL SEMI-VOLATILES
EXISTING SITE CONDITIONS •
SS-03 SS-04 SS-05 SS--06
ER-019 EA--014 EA-020 EA-024
5/16191 5/15/91 5/16191 5116191
NW CORNER EAST END EAST OF EASTOFWHSE
WHSE.A IN WOODS WHSE.A A AT DOCK
---
Ss--09 SS-12
ER-013 EA-022
6/15191 6/18/91
NORTH OF BLIND SPLIT
OFFICE OF SS-08 ,: •· >c··:••.•· .... \···,·~ ··m Ell-1,0 UEN ~ ·••·• •-•· j < T ·. ... :
PHENOL 1oou nou e40u
BIS(2-<:HLOROETHYL)ETHER 790U 770U
2-<:HLOROPHENOL 790U nou
1,3-0ICHLOROBENZENE 790U nou
1,4-0ICHLOROBENZENE 790U nou
BENZYL ALCOHOL 790U nou
1,2-DICHLOROBENZENE 790U nou
2-METHYLPHENOL 790U nou
BIS(2-<:HLOROISOPROPYL)ETHER 790U nou
4-METHYLPHENOL 790U nou
N-NITROSO-OI-N-PROPYLAMINE 790U nou
HEXACHLOROETHANE 790U nou
NITROBENZENE 790U nou
ISOPHORONE 790U nou
2-NITROPHENOL 790U nou
2.4-0IMETHYLPHENOL 790U nou
BENZOIC ACID 3800J 3800U
BIS(2-<:HLOROETHOXY)METHANE 790U nou
2,4-0ICHLOAOPHENOL 790U nou
1,2,4-TRICHLOROBENZENE 790U 250J
NAPHTHALENE 790U nou
4-<:HLOROANILINE 790U nou
HEXACHLOROBUTADIENE 790U nou
4-<:HLOR0-3-METHYLPHENOL 790U nou
2-METHYLNAPHTHALENE 790U nou
HEXACHLOROCYCLOPENT ADI ENE 790U nou
2,4,11-TRICHLORDPHENOL 790U nou
2,4,5-TRICHLOROPHENOL 4000U 3800U
2-<:HLORONAPHTHALENE 790U nou
2-NITROANILINE 4000U 3800U
DIMETHYLPHTHALATE 790U nou
ACENAPHTHYLENE 790U nou
2,EHllNITROTOLUENE 790U nou
3-NITROANILINE 4000U 3800U
NOTES: RESULTS REPORTED IN UGIKG. DATA HAS BEEN VALIDATED
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
J • QUANTITATIVE ESTIMATE.
940U
940U
940U
940U
940U
940U
940U
940U
940U
940U
940U
940U
940U
940U
940U
200J
940U
940U
940U
940U
940U
940U
940U
940U
940U
940U
4700U
940U
4700U
940U
940U
940U
4700U
• SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991.
TBL ◄-2B (1/14192)
730 U 750U 650U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
3700U 3800U 380J 3700U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
3700U 3800U 3200U 3700U
730U 750U 850U 740U
3700U 3800U 3200U 3700U
730U 750U 850U 740U
730U 750U 850U 740U
730U 750U 850U 740U
3700U 3800U 3200U 3700U
-- -
------
SAMPLE ID: SS---01
LAB NUMBER: ER--017
-- - --
TABLE4-2
PHASE 1 SOIL SAMPLES -TCL PESTICIDES
EXISTING SITE CONDITIONS •
SS---03 SS---04 SS---05
ER-019 ER--014 ER-020
- --
SS---06 SS---09 SS-12
ER-024 ER-013 ER-022
SAMPLE DATE: 5/15,00 5/16190 5115/90 5116/90 5/16190 6115190 5118190
LOCATION: WEST END NW CORNER EAST END EAST OF EAST OF NORTH OF BLIND SPLIT
·•·•·· i~,--
t•·
\, ··•·•. •·•··••• ,, .... r~~::~.~~/ .;~SE2A : r
ALPHA-BHC 10U 7500C 120U 2200C: 4700U 83U 4500U
BETA-BHC ,ou
DELTA-BHC
GAMMA-BHC
HEPTACHLOR
ALDRIN
HEPTACHLOR EPOXIDE 10U
ENDOSULFAN I 10U
DIELDRIN 20U
4,4'-DDE 90
ENDRIN 20U
ENDOSULFAN II 20U
4,4'-DDD 24
ENDOSULFAN SULFATE 20U
4,4'-DDT 85
METHOXYCHLOR 100U
ENDRIN KETONE 20U
ALPH~HLORDANE ,oou
GAMMA-CHLORDANE 100U
TOXAPHENE 340
AROCLOR-1018 100U
AROCLOR-1221 100U
AROCLOR-1232 100U
AROCLOR-1242 100U
AROCLOR-1248 100U
AROCLOR-1254 200U
AROCLOR-1260 200U
NOTES. RESULTS IN UG/KG. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
J • QUANTITATIVE ESTIMATE.
C • CONFIRMED BY GC/MS.
3300C 120U
940U 120U
810J 120U
940U 120U
1600C 120U
940U 120U
940U 120U
1300J 230U
4200C noJ
1900U 230U
1900U 230U
4700C 680J
1900U 230U
20000C 3500JC
9400U 1200U
1900U 230U
9400U 1200U
9400U 1200U
100000U eooou
9400U 1200U
9400U 1200U
9400U 1200U
9400U 1200U
9400U 1200U
19000U 2300U
19000U 2300U
• SITE CONDITIONS AFTER REMOVAL CONDUCTED DURING MARCH -APRIL 1881.
TBL 4-2C (1/14/92)
2900C 4100JC 83U 4100JC
890U 4700U 83U 4500U
890U 4700U 83U 4500U
890U 4700U 83U 4500U
890U 13000C 83U 14000
890U 4700U 83U 4500U
890U 4700U 83U 4500U
1800U 9400C 170U 10000C
2500 7900J 350 9600
1800U 9400U 170U 8100U
1800U 9400U 170U a1oou
11000C 30000C 390 25000C
t800U 9400U 170U 8100U
25000C 49000C 1800 69000C
8900U 4700DU 830U 45000U
1800U 9400U 1700 8100U
8900U 47000U 830U 45000U
8900U 47D00U 830U 45000U
120000C 400000C 8500U 490000C
8900U 470000 830U 45000U
8900U 47000U 830U 45000U
8900U 470000 830U 45000U
8900U 470000 830U 45000U
8900U 47000U 830U 45000U
180000 94000U 1700U 81000U
180000 94000U 1700U 81000U
- --
-
,,.
I .....
0
- -----
SAMPLE ID: SS-01
LAB NUMBER: ER-017
LOCATION: WEST END
ALONG HWY.
SAMPLE DATE: 5115/90
---- -
TABLE4-2
PHASE 1 SOIL SAMPLES-TCL METALS
EXlSTING SITE CONDITIONS •
SS-03 SS-04 SS-05
EA-019 ER-014 EA--020
NW CORNER EAST END EAST OF
WHSE.A IN WOODS WHSE. A
5118/90 5118/90 5116/90
-----
SS-08 SS--09 SS-12
EA-024 ER-013 ER-022
EAST OF NORTH OF BLIND SPLIT
WHSE.A OFFICE OF 8S--08
5118/90 5115/90 5118/90 am ,, .. ,,, ·: --.... .. E••v~n• :
•·••· .,:,:.-.:-,-:-::::: ,,-:-:: ·•··
ALUMINUM 7850
ANTIMONY 13.2U
ARSENIC 2.0J
BARIUM 22.7
BERYLLIUM 0.09
CADMIUM 0.87U
CALCIUM 887
CHROMIUM 8.8
COBALT 3.0U
COPPER 9.9B
IRON 8050
LEAD 92.4
MAGNESIUM 97.58
MANGANESE 33.9J
MERCURY 0.11U
NICKEL 5.BU
POTASSIUM 243
SELENIUM 0.388
SILVER 1.SU
SODIUM 24.08
THALLIUM 0.49U
VANADIUM 9.7
ZINC 48.2
CYANIDE 0.58U
NOTES: RESULTS IN MG/KG. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
J • QUANTITATIVE ESTIMATE.
13.SU 18.3U
0.91J 2.4J
9.7 21.7
0.07U o.oau
0.91U 1.1U
5540 1108
9.1 5.7
3.3U 3.7U
6.2B 8.18
8870 7080
4.8 74.0
1850 208
11.0J 13.7J
0.10U 0.188
8.2U 7.1U
327 314
0.48U 0.948
1.DU 2.3U
31.68 38.98
0.47U 0.57U
11.4 9.8
25.58 38.3
1.2U 0.70U
• SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991.
TBL 4-2D (1/14/92)
13.9U 13.2U 12.7U 14.0U
0.68U 0.72J 0.84J o.eou
5.9 5.8 14.3 7.8
0.07U 0.62J 0.07U 0.34J
0.92 0.87 0.84U 0.92U
11200 4780 4750 8150
2.0 3.9 2.8 5.1
3.0U 3,1U 2.7U 3.0U
3.38 8.98 8.08 7.8B
2400 4870 2810 4250
13.7 9.4 24.0 13.1
5130 2330 2000 2500
18.SJ 18.1J 211.J 18.SJ
0.10U 0.10U 0.10U 0.10U
5.7U 8.0U 5.1U 5.7U
234 209U 221 282J
0.438 0.23U 0.588 0.23U
1.9U 1.8U 1.8U 1.9U
28.88 18.48 30.38 19.38
0.45U 0.46U 0.41U 0.46U
2.5U 5.9 2.3U 7.4
52.8 78.3 70.7 80.8
1.1U 1.1U 0.4&U 1.1U
---
I
I
I
I
i
I
I
I
I
I
I
I
I
I
I
I
I
I
I
~
WOODS
:
.
:tE 11\Q< ... ~ ~ 71' ""~ • S'I~ -----""'= -.. --~ . .
ESmu, ID) Pf!a>EJ!ry LINE
..
.
. .
.
~-------............ ...... ...... ........ ........ ...... ...... ...... ...... ...... ........ '-.. ...... ...... ...... ...... ,
' ' "' ' "' ) ',
~
I
~
.....
TDTAL DC -ND TOTAL DDT -112 TlJTAL TtIXAPtE£ -Q.3
ss-,0
AND ROcl<FlSH RAJlROAO
'/ I ~ // // //
//
//
// u
// /1/ -// ~ /;, .. IIODY 9i0P §1 1 I E] 1/ I I
I I ..... '
ti " SS-«l TllTAL llDT -~ \ TDTN.. a«: -10.S .......
I I L--~ .~/ TO'TAL ffl -29
\ TDTAL T'tlXN'tErlE -UICI ND • . = ....... -1.6
/ ' ~ . .
STAlE HIGHWAY 211 I I
\ / ' ( ' .,
..... ~ .... "\,.-. ~ -.T--------... "-// '-----( --ci " '\ ,c,ss-, \ ~o "11:~ l•cr-.'D~(=~ I " '\ ,_,, '-". '\ \ l (m "ffl'.:1Dt,:a A NO~ • "~ '\ ...... I "'" l --.ru.. r--SS-0 ..._,_,
r '\\ . ....___ \
/' \
~
SS-«I -' mTAL ac -:u
SS-o6 TUTAL DDT -3' . . TOT AL 11IXN'tE€ -12'0
TOTAL m -7' TOTAL 11IXAPf,E£ -400
ALIIRIM -13 IIIDJIRD< -...
0 80 .
WOODS SCAL£ IN FEET
LEGEND
n-10
FIGURE 4-2. PHASE 1 SOIL SAMPLES
INITIAL StWACE SOIL SAliF'l.£ UJCATIDN PESTICIDE ANALYSES, MAY 1990
ND a NOT DE.IECIED AT Tl£ OCIECIILh LIMIT GEIGY CHEllICAL CORPORATION SITE
RESULTS IN l"lg/kg
7617ISS1.JNG l£Gl ERM-SOUTHEAST, INC
4-11
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
a parameter of concern in regional ground water, were included as
site specific sampling parameters.
4.4.2 Phase 2 Soil Sampling and Analysis
In order to obtain a representative picture of potential Site
contamination, a forty-foot grid was established over the Site as
shown in Figure 4-3. Samples on the grid were located by
engineering survey methods for future reference. Ninety-four
surface soil samples were originally collected in accordance with
the procedures outlined in the approved RI\FS Work Plan and POP and
were analyzed for the Site specific parameters (i.e., pesticides,
copper, lead and zinc) . The following sample locations were
removed during the March-April 1991 removal: SS-48, SS-64, SS-65,
SS-66, SS-69, SS-72, SS-73, SS-75, SS-76, SS-77, SS-78, SS-79, SS-
80, SS-81, SS-91, SS-98, SS-99. SS-100, ss-101, SS-108, SS-109, ss-
111, SS-112, SS-113, SS-116 and SS-118. Pre-removal conditions can
be found in Appendix c of Appendix 4.
A summary of the existing Phase 2 soils analytical results is
presented in Table 4-3. In addition to the grid samples, two
background soil samples (SS-121 and SS-122) were obtained north and
east of the Site as shown in Figure 4-3 and a sample was collected
from the scale pit (SS-110). The sample from the scale pit was
analyzed for the Site specific parameters. The background soil
samples were analyzed for the full TCL/TAL parameters. A summary
of the pesticides and metals results for the background samples is
presented in Table 4-4. DDT, as well as toxaphene, were detected
in the background samples at less than 500 ug/kg total pesticides.
No volatile or semi-volatile constituents were detected in the
background samples.
The analytical data was reviewed to determine which sample
locations contained significant concentrations of Site specific
parameters. The term significant was defined in the RI/FS work
plan as a soil concentration level of 10 mg/kg or greater total
BHC, total DDT or toxaphene. Table 4-5 provides a summary of the
sample locations exhibiting significant concentrations of
pesticides. Figure 4-4 indicates the locations of samples with
concentrations greater than 10 mg/kg. Only two samples, SS-63 and
SS-110 exhibited pesticide concentrations greater than 100 mg/kg.
Lead concentrations generally ranged from the Phase 2 background
concentrations (7.6 mg/kg at SS-121 and 20 mg/kg at SS-122) to
approximately 100 mg/kg. The lead concentration at the Phase 1
background location (SS-04) was 74 mg/kg. Phase 2 samples with
lead concentrations greater than 100 mg/kg are as follows:
Location (Lead Concentration)
SS-20 (207 mg/kg)
SS-82 (336 mg/kg)
SS-37 (120 mg/kg)
SS-107(188 mg/kg)
4-12
Location (Lead concentration)
SS-25 (113 mg/kg)
SS-83 (222 mg/kg)
SS-84 (125 mg/kg)
SS-103(198 mg/kg)
I
I
I
I
I
I
Ii
Ii
I!
It
SS-20
•
" ,,
,_
"' SS-2t
•
,,
'' '' '' '' '' , .......
'-' ,,
' ....... ' ' ....... ' ,,
) ;_..,_
I 1 \ ', ,.., '\ \
I ' '
SS-37
., " " SS-Jt SS-J♦ S5-:-36
9 "' 9 SS-JO SS-J2 ss-:is
© " " SS-40 SS-43 SS--.0
@ © <!> SS-J9 SS-42 ss--<.,
<!> <!> 9 SS-.38 SS-il SS--44
" SS-55
F1llN>A 1XI(
0
LJ
-
BDC1f SHOP
. "
LEGEND
SS-82
<!> stllfACE S0l1. LDCAllON
NOTE, sm: C0NIJIT10N ~ REll<>/.II. CONlllJClto 1XHtC llN<CH--,\PRIL, 1991.
0 80
SCA!.£ IN FEET
n,~URX 4-3. P!USB 2 SOIL SAKPL1 mstJNG LOCUIONS
GElGY CHDIICAL CORPORATION sn'I
.lBKRDUN, NORTH CABOUNA
liffil ERM-SOUTHEAST, INC
ABrn.DWG
4-13
-
.I> I .....
.I>
.. -----
SAMPLE ID: SS-~ SS-21-0 SS-22--0 SS-23-0
LAB NUMBER: EA-029 ER-030 EA---031 EA--032
SAMPLE DATE: 7/17/00 7117/90 1117190 7/17190
COMMENTS:
- - - --
TABLE4-3
PHASE 2 SOIL SAMPLES -SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS •
SS-24---0 SS-25-0 SS-26--0 SS-27-0 SS-28-0
ER-033 EA-034 EA-035 EA--036 ER--037
7/17/90 7/17/90 7/17/90 7117/90 7/17/90
- --
SS-21>--0 ~ SS-31-0
ER-o38 ER-o39 ER-o4-0
7117/90 7/18/90 7/18/90
·:··coNsfif0~~;•• ?••·••••· ut~r \/ i : ... : /· ., ... < .. i +<
••. .', :'.:''•.•_·,::·. ·• t Rlli 1 ••·• .. · .... t}t/ : . ••·• ii/ I ... · ... :):::}\, <t•····-.:•< •.i/ /t/'/ . ·•./ :.•./\/ :-:.\:'->f: .. .... :< •·· •·. •·· ·. .···•••·· :. :.
ALPHA-BHC UGIKG 8.2U 8.2U
BETA-6HC UG/KG 8.2U 8.2U
DELTA-6HC UGIKG 8.2U 8.2U
GAMMA-BHC UGIKG 8.2U 8.2U
HEPTACHLOA UG/KG 8.2U 8.2U
ALDRIN . UGIKG 5.9J 8.2U
HEPTACHLOA EPOXIDE UG/KG 8.2U 8.2U
ENDOSULFAN I UGIKG B.2U 8.2U
DIELORIN UG/KG 13J 18U
4,4'-0DE UGIKG 58 110
ENDRIN UG/KG 16U 16U
ENDOSULFAN II UGIKG 18U 1BU
4,4'-000 UG/KG 09 83
ENDOSULFAN SULFATE UGIKG 18U 16U
4,4'-0DT UGIKG 250J 380J
METHOXYCHLOR UGIKG 82U 82U
ENDAIN KETONE UGIKG 18U 18U
ALPHA-CHLORDANE UGIKG 82U 82U
GAMMA-CHLORDANE UGIKG 82U 82U
TOXAPHENE UGIKG 1500 1800
COPPER MG/KG HUI 12.1
LEAD MG/KG 207J 07.4J
ZINC MG/KG 139J 189J
NOTES. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN BLANK AT SIMILAR CONCENTRATION.
J • QUANTITATIVE ESTIMATE.
C • CONFIRMED BY GC/MS.
8.2U 8.2U 8.2U
8.2U 8.2U B.2U
8.2U 8.2U B.2U
8.2U 8.2U 8.2U
8.2U 8.2U B.2U
8.2U 8.2U 8.2U
8.2U 8.2U 8.2U
8.2U 8.2U 8.2U
16U 16U 11J
130 24 58
16U 16U 16U
16U 16U 16U
02 8J 22
16U 16U 16U
250J 32J 40J
82U 82U 82U
18U 18U 18U
82U 82U 82U
82U 82U 82U
1300 180U 810
32.1 7.0 27.4
41.0 25.4.J 29.BJ
732 88.SJ 37.3.J
• SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991
TAB 4-3 (11141112)
88U 8.1U 8.5U 8.1U a.4U a.au e.eu
88U 8.1U 8.SU 8.1U 8.4U 8.3U 8.6U
88U 8.1U 8.5U B.1U 8.4U 8.3U B.8U
88U B.1U a.SU 8.1U 8.4U 8.3U 8.eu
88U 8.1U 8.SU B.1U B.4U 8.3U e.eu
88U 5.9J 8.SU 8.1U 8.4U 8.3U 8.eu
88U 8.1U 8.5U B.1U 8.4U 8.3U B.8U
88U 8.1U e.su 8.1U B.4U B.3U 8.8U
180U 16U 17U 16U 17U 17U 17U
540 14J 83J 110 120 23 180
180U 16U 17U 10U 17U 17U 17U
180U 16U 17U 1BU 17U 17U 17U
780 18U 48J 41) 48 13J 87
180U 16U 17U 18U 17U 17U 17U
3300 8.4J 130J 130J 170J 30J 280J
880U 81U 85U 81U 84U 83U 88U
180U 18U 17U 18U 17U 17U 17U
BBOU 81U 85U 81U 84U 83U 88U
BBOU 81U 85U 81U 84U 83U aeu
5800 180U 880 850 1120 480 1300
14.9 20.5 8.3 29.8 0.8 8.7 8.1
113J 33.2J 84.BJ 35.8.J 118.4J 13.2J 411.0J
100J 21.BJ B9.2J 18.2J 41.1J 14.8 · 52.2
- - -
SS-32-0 SS-33-o
EA-041 ER-042
7118/90 7/18/90
BSOF
SS-27
{. .
···•>·•·•j?•·::·_
7.SU «u
7.5U «u
7.6U «u
7.5U «u
7.6U ••u
7.5U «u
7.6U 44U
7.SU «u
15U 88U
48 400
15U 88U
15U 88U
22 220
15U 88U
59J 560J
75U 440U
15U 88U
75U 440U
75U «oU
430 3200
8.0 5.8
32.1J 92.0J
24.0 73.1
-
.,,.
I '"--' '-"
----·--- - - -
TABLE 4-3
PHASE 2 SOIL SAMPLES-SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS •
SAMPLE ID: SS-34--0 SS-35-0 SS-36--0 SS-37--0 SS-38-0 SS-39-0 S~0--0 SS-41--0
LAB NUMBER: ER--043 ER--044 EA--045 EA--046 ER--047 EA-048 EA--049 EA-050
SAMPLE DATE: 7/18/90 7118/90 7/18/90 7/18/90 7/18/90 7/18190 7118/90 7/18/90
COMMENTS:
CONST1riifuri-/ • . G~tf : ·. ··=•·_:::::::.-. . ': . . :/ ··.::=·:=-SL•>-\/>•· ~s t : }\)t\· ·--·•·•=· _. t
> < .· -... > . ·Y. > ... -,.,,,_ ·;=-·. ·•
ALPHA-BHC UG/KG .. u 43U
BETA-BHC UGIKG 48U 2BJ
DELTA-BHC UG/KG 4BU 43U
GAMMA-BHC UG/KG .. u 43U
HEPTACHLOR UG/KG 4BU 43U
ALDRIN UG/KG .. u 43U
HEPTACHLOR EPOXIDE UGIKG .. u 43U
ENDOSULFAN I UG/KG 4BU 43U
DIELDRIN UGIKG 96U BOU
4.4.-0OE UG/KG 280J 010J
ENORIN UG/KG 96U BOU
ENDOSULFAN II UGIKG 96U BOU
4.4'-0DO UG/KG 74J 320J
ENDOSULFAN SULFATE UGIKG 96U BOU
4,4'-0DT UG/KG 360J 590J
METHOXYCHLOR UG/KG 4B0U 430U
ENDRIN KETONE UG/KG 96U 80U
ALPHA-CHLORDANE UG/KG .. ou 430U
GAMMA-CHLORDANE UG/KG 480U 430U
TOXAPHENE UG/KG 960U 3300
COPPER MG/KG 32.4 13.3
LEAD MGIKG 48.SJ 44.1J
ZINC MG/KG 102 27.7
NOTES: DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN BLANK AT SIMILAR CONCENTRATION.
J • QUANTITATIVE ESTIMATE.
C • CONFIRMED BY GCIMS.
170U 8.8U 43U
170U 8.BU 43U
170U B.6U 43U
170U 8.6U 43U
170U 8.BU 43U
170U 8.6U 43U
HOU 8.BU 43U
170U 8.BU 43U
350U 17U BOU
-.J 8.0J 220
350U 17U BOU
350U 17U BOU
360J 8.7J 99
350U 17U BOU
1300J 23J 170J
1700U BOU 430U
350U 17U BOU
1700U BOU 430U
1700U BOU 430U
3500U 170U 860U
37.7 4.4 5.7
69.7J 120J 18.SJ
83.8 36.5 19.8
• SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991
TAB 4-3 (1/14192)
42U 8.7U 8.7U
42U 8.7U B.7U
42U 8.7U B.7U
42U 8.7U B.7U
42U 8.7U 8.7U
42U 8.7U B.7U
42U 8.7U 8.7U
42U 8.7U 8.7U
B5U 17U 17U
190 85 180
85U 17U 17U
85U 17U 17U
89J 83 50
85U 17U 17U
220J 300J 210J
420U 87U B7U
85U 17U 17U
420U 87U 87U
420U B7U B7U
BSOU 920 760J
19.0 4.8 9.9
27.8 82.0 45.4
49.1 28.9 28.0
S8--42--0
EA-051
7/18/90
.:•
···•}Ii• ...
9.tU
e.1U
9,1U
9.1U
9.tU
9.tU
9.1U
9.1U
,au
170
,au
,au
55
18U
150
81U
18U
91U
91U
740J
26.8
43.1
82.9
-- - -- -
SS-43--0 SS-44--0 SG-45--0 SS-46--0 SS-'7-0
ER--052 ER--053 EA--054 ER-055 ER--056
7118/90 7/18/90 7/18/90 7/18/90 7118/90
···•·•
•I i[ > L·
" (). :· > ••··•.· ..
88U B.9U B.3U 170U 83U
88U 8.9U 4.9.I 120J 83U
BBU 8.9U B.3U 170U 83U
88U 8.BU 8.3U 170U 83U
88U a.OU 8.3U HOU 83U
88U 8.9U B.3U 170U 83U
88U a.au 8.3U 170U 83U
88U 8.9U 8.3U HOU 83U
180U ,au 17U 340U HOU
470 140.J 140 1600J BOOJ
180U ,au 17U 340U 170U
180U 18U 17U 340U 170U
360 B0J 54 1500J OOOJ
180U ,au 17U 340U HOU
2800.J 210J 180J 6200J 1600J
880U B8U 83U 1700U 830U
180U 18U 17U 340U 170U
880U B9U 83U 1700U 830U
880U 89U 83U 1700U 830U
2300 1100J 860 11000J 8000J
3.7 18.9 18.7 2.SU HU
96.0 40.4 25.0 78.2 22.7
40.7 30.2 32.0J 42.7 17.7B
--- - - ----- --
SAMPLE ID: SS-49-0 SS-50--0 SS-51-0
LAB NUMBER: EA--058 ER--059 ER--088
SAMPLE DATE: 7/18/90 7118190 7/18/90
COMMENTS:
~<>~;.:Nt;;;w i \•• tJ~; .. •.· ,·. • ... ·· :
·•· •·•· ..... ... _ ..
.. . . ....... (·>••·· \/ ,···.
ALPHA-BHC UGJKG 330J 42U B.6U
BETA-BHC UG/KG 150J 42U 8.BU
DELTA-BHC UG/KG sou 42U 8.BU
GAMMA-BHC UG/KG sou 42U 8.BU
HEPTACHLOR UGJKG sou 42U 8.BU
ALDRIN UGJKG BOU 42U 8.BU
HEPTACHLOR EPOXIDE UG/KG sou 42U a.eu
ENDOSULFAN I UG,'KG BOU 42U a.eu
OIELDRIN UG/KG 160U 84U 390J
4,4'-0DE UG/KG 1000J 370J 550J
ENORIN UGJKG 160U 84U 17U
ENDOSULFAN II UG/KG 160U 84U 17U
4.4'-000 UGJKG 1900J SBOJ 2000J
ENDOSULFAN SULFATE UG/KG ,eou--84U 17U
4,4'-00T UG/KG 4900J 1000J 3000J
M ETHOXYCHLOR UG/KG BOOU 42OU BOU
ENORIN KETONE UGJKG 160U 84U 17U
ALPHA-CHLORDANE UG/KG aoou 42OU B8U
GAMMA-CHLORDANE UGJKG 800U 420U 68U
TOXAPHENE UGJKG 15000J 5800J 18000J
COPPER MG/KG 4.38 14.S 24.1
LEAD MG/KG 65.5 22.7 26.4J
ZINC MGJKG 130 33.7J 45.4
NOTES. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN BLANK AT SIMILAR CONCENTRATION.
J • QUANTITATIVE ESTIMATE.
C • CONFIRMED BY GC/MS.
SS-52--0
ER-069
7/19/00
TABLE4-3
PHASE 2 SOIL SAMPLES -SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS •
SS-53--0 SS-54--0 SS-55-0 SS-56--0 SS-57-0
ER-070 EA-071 ER---060 ER-072 ER--067
7/19/90 7/19100 7/19/90 7/19/00 7119/90
BSOF
SS-44
SS-58~
E-73
7/19/90
·-•· f ··••-···-•\••·· \ ••)>.· /.-.. _ .. --. I •----• \·· ·:,: :,.-:·-:_:_-_; ._:,:·-.... --·. __ :
. >.\· '':/··'·: ;_,:;:i): ," ::-:,_.-::.:,:.::,-·::.-: :: :,_ ._-:-. .-::·--,:_:· ·._,-_-_
7.SU 7.SU BSU 44U 83U 350U 76.J
7.SU 5.IIJ BSU «u 43.1 350U 220J
7.5U 7.BU BSU «u SJU 350U 33J
7.SU 7.BU BSU «u S3U 350U 41J
7.SU 7.BU BSU «u S3U 350U 82U
7.SU 7.BU BSU 44U S3U 350U S2U
7.SU 7.BU BSU «u S3U 350U 82U
7.SU 7.BU 85U «u SJU 350U S2U
15U 16U 17OU 68U 17OU 1500J 160U
34 120 460J 870 BOOJ 7300 4100J
15U 16U 170U 68U 170U 71OU 160U
15U 16U 17OU 68U 170U 710U 160U
32 220 430J 400 830J S700J S700J
15U 16U 17OU 8BU 17OU 710U 160U
62J 340J 74OJ 010 1O00J 8900J OOOOJC
75U 7SU 850U 440U BJOU 3500U 820U
15U 18U 17OU BBU 170U 71OU 160U
75U 78U 850U 440U 830U 3500U 820U
75U 7BU 850U «oU 830U 3500U 120U
400 3800 4100J 4700 5400J 37000J l3000J
4.1 4.1 18.7 19.2 21.0 11.1 18.3
6,IIJ 18.2J 21.1J 44.0 33.2J 32.3 33.7J
1.6J 46.1 8.4J 42.8 7.7J 26.0J 16.7J
• SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 11191
TAB 4-3 (1/14192)
---- -
SS--.-0 SS-<!0--0 SS-,,1~ SS-<12~
E-74 E-75 ER-078 E~n
7/19190 7/19/90 7/18/90 7/19/90
•·•·-···•·•···~
: -•. _.J. ·-•·· •/•'• ,., . ... ,·.· ..
170U sou 390U 420U
170U 60J 390U 420U
170U sou 390U 420U
170U sou 390U 420U
170U sou 390U 420U
170U sou 390U 420U
170U sou 390U 420U
170U sou 390U 420U
330U 160U nou S50U
1600J 670J 3000J 4000J
330U 160U nou 850U
330U 160U nou 850U
1200J 730J 3500J 4800J
330U 160U nou 850U
2300J 1000J 7800JC 8200JC
1700U aoou 3900U 4200U
330U 160U nou B50U
1700U 800U 3900U 4200U
1700U 800U 3900U 4200U
14000J 0300J 54000J 59000J
10.8 20.1 17.8 21.7
38,0J 24.6.J 26.3.I 29.IIJ
25,6.J 23.2J 7.0J 5.4J
- --------- - ----
I
SAMPLE ID: S$-<13-<) SS.-,,7-0 SS--0 SS-71--0
LAB NUMBER: ER-078 EA--082 ER-083 EA-092
SAMPLE DATE: 7/19190 7/19/90 7/19/90 7123/90
COMMENTS;
TABLE4-3
PHASE 2 SOIL SAMPLES -SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS •
SS-82-0 SS-83-0 Ss-84-0 SS-85-0 SS-87-0
ER-102 ER-103 ER-104 ER-105 ER-107
7/23/80 7/23/80 7/23/90 7/23/00 7/23/80
SS-88-0
ER-108
7/23/80
... .. ·;;~~Jifu~f. / ii~;+J I• • \
•••·•·•••····· ··{•.•·••••·•••··••t•••··1•••fr•·· .····•··•··•··•••·•(•••····••··· .. \ ............... I .z;··••••i·•••·•··•·•••···\·•··••···•·••·•.•••·••···•.·•••···C•\·•• I••• I iI; .....
:.(\;,./( ..... ·_:.-_-. :·.. . -:.==:-:.:.:,/.: .... ,._::·;·))/;'.? ·:, <:-:·= :_. ·.:::··-: ---::·=: .... ,.;-·.:-.:, ....
ALPHA-BHC UG/KG 410U 82U
BETA-BHC UG/KG 410U 82J
DELTA-BHC UG/KG 41DU 82U
GAMMA-8HC UG/KO 410U 82U
HEPTACHLOR UG/KG 410U 82U
ALDRIN UG/KG 410U B2U
HEPTACHLOR EPOXIDE UG/KG 410U B2U
ENDOSULFAN I UG/KG 410U 82U
DIELORIN UG/KG 820U 180U
4,4'-0DE UG/KG ... OOJ 580J
ENORIN UG/KG 820U 180U
ENDOSULFAN II UG/KG 820U 180U
4,4'-00D UG/KG 0100J 880J
ENDOSULFAN SULFATE UG/KG 820U 180U
4,4'-00T UG/KG 11000JC 1100J
METHOXYCHLOR UG/KG 4100U B20U
ENDRIN KETONE UG/KG 820U 180U
ALPHA-CHLORDANE UG/KG 4100U 820U
GAMMA-CHLORDANE UG/KG 4100U B20U
TOXAPHENE UG/KG 130000J 10000J
COPPER MG/KG 21.fl 19.3
LEAD MG/KG 37.0J 21.BJ
ZINC MG/KG 12.flJ 2.1J
NOTES: DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN BLANK AT SIMILAR CONCENTRATION.
J • QUANTITATIVE ESTIMATE.
C • CONFIRMED BY GCIMS.
8.3U 700U eou
8.3U 700U eou
8.3U 700U eou
8.3U 700U eou
8.JU 700U eou
8.3U 700U eou
8.3U 700U eou
8.3U 700U eou
17U 1400U 140U
32J 2300J 100
17U 1400U 140U
17U 1400U 140U
14J 0100J 320
17U 1400U 140U
27J 19000JC l30
83U 7000U eoou
17U 1400U 140U
83U 7000U 890U
83U . 7000U eoou
250J 54000J 3800
5.3 7.8 15.5
10.flJ 23.0J 338J
1.4U 78.4J 00.3J
• SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1001
TAB 4-3 (1/14192)
7.4U 81U 96U 78U 01
7.4U 81U 85J 78U 380
7.4U 81U 96U 78U ..
7.4U 81U 96U 78U 48J
7.4U 81U 96U 78U 88U
7.4U 81U 96U 78U 88U
7.4U 81U 96U 78U 88U
7.4U 81U 96U 78U 88U
15U 1IKIU 190U 100U 140U
41 120J 390 250J 530
15U 1IKIU 190U 100U 140U
15U 1IKIU 190U 100U 140U
110 210 710 570J 1200
15U 180U 190U 1eou 140U
310 550 1900 1500J 2400
74U B10U 960U 780U 880U
15U 1IKIU 190U 1IKIU 140U
74U B10U 960U 780U 880U
74U 8100 960U 780U 880U
510 1900 2900 4300J 9800
0.2 ••• 8.0 ••• ••• 222J 125 47.3.1 13.3.I 24.4J
49.7J 35.4J 58.8J 111J 28.0J
SS-«IHJ
ER-109
7/23/80
··•·•
•··.··
130J
2'IO
64J
51J
140U
140U
140U
1-COU
280U
880
280U
280U
380
280U
4300
1400U
2BOU
1400U
1400U
8700
5.2B
14.GJ
16.flJ
- -- -
IIS-90-0 SS-02-0 SS-113--0
ER-110 ER-112 ER-113
7/23/80 7/23/80 7/24/90
: ·: <·>=> ·••. I ·.•
•.
340U 100U 380J
750J 180J 1600J
340U 100U 810U
340U 1IKIU 810U
340U 100U 810U
340U 1eou 810U
340U 1IKIU 110U
340U 1IKIU 810U
880U 330U 1eoou
1400J 1100J 5900J
880U 330U 1eoou
880U 330U 1000U
3800J 2400J 12000JC
880U 330U 1000U
0300JC 3900J 33000JC
3400U 1!KIOU 8100U
880U 330U 1eoou
S400U 1!KIOU 8100U
3400U 1!KIOU 8100U
28000J 35000J 78000J
10.3 u 0.7
25.BJ 28.4J 87.1J
TT.2J 51.SJ 43.1J
,, ....
OJ
-- ---- ---- - - -- - -
TABLE4-3
PHASE 2 SOIL SAMPLES -SITE SPECIFIC PARAMETERS
EXISTINO SITE CONDITIONS•
SAMPLE ID: SS-94-0 SS-95--0 SS-96--0 SS-97-0 SS-103-0 SS-104-0 SS-105--0 SS-106-0 SS-107--0 SS-110-0
LAB NUMBER: ER-114 ER-115 ER-116
SAMPLE DATE: 7/25/90 7/25/90 7/24/00
COMMENTS:
-cbNs+i+GJ;;;. j ":,;-\/:=\:: . • ... ...... '.:,.i: :-·_-. .... ·.·.
i ; .> · :.=:,,,,.,,:::·:::=)t{Y··· UNITS. .::\•• :, ••••·••••I<• >r·•
ALPHA-BHC UO/KO nu 7.7U 8.4U
BETA-BHC UG/KO 63J 5.1J 8.4U
DELTA-BHC UO/KO nu 7.7U 8.4U
GAMMA-BHC UGfKG nu 7.7U B.4U
HEPTACHLOR UG/KO nu 7.7U 8.4U
ALDRIN UG/KO nu 7.7U 8.4U
HEPTACHLOR EPOXIDE UG/KO nu 7.7U 8.4U
ENDOSULFAN I UG/KG nu 7.7U 8.4U
OIELORIN UG/KG ,sou 22J 17U
4.4'-00E UO/KG 320 120J 3.7J
ENORIN UO/KO 150U 15U 17U
ENDOSULFAN II UO/KO 150U 15U 17U
4,4'-000 UG/KO ..., 160J 7.7J
ENDOSULFAN SULFATE UO/KO 150U 15U 17U
4,4'-00T UG/KG 1600 460J 25
METHOXYCHLOR UO/KO nou nu 84U
ENORIN KETONE UG/KG 150U 15U 17U
ALPHA-CHLORDANE UO/KO nou 45J 64U
OAMMA-CHLORDANE UG/KO nou 4DJ 64U
TOXAPHENE UO/KG 3900 1500J 170U
COPPER MO/KO 33.7 5.8 3.38
LEAD MO/KO 22.3J 72.SJ 11.8J
ZINC MO/KO 24.&J 43.9J 7.6B
NOTES: DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN BLANK AT SIMILAR CONCENTRATION.
J • QUANTITATIVE ESTIMATE.
C • CONFIRMED BY OC/MS.
ER-117 ER-123 EA-124 ER-125 ER-126
7/24/90 7/24/90 7/24/90 7/24/90 7/24/90
~ ·::::,. •:;,:: _ _.:._::.:-::;::;-.·.•·•·:·:·,•: ::.,:,_.: __ .:-::,::, ·-.,:,-,::,-,:
i() ·•:.?=c:.': ,:::. ...:·· ... ·••· ••>• >i ii{. < :-.. ,):·:::c;--:·:: :·:··: •>····
7.2U 690U aau 340U 160U
5.SJ 690U aau 340U 160U
7.2U 690U aau 340U 160U
7.2U 690U aau 340U 160U
7.2U 690U aau 340U 160U
7.2U 690U aau 340U 160U
7.2U 690U aau 340U 160U
7.2U 690U aau 340U 160U
14U 1400U 140U 690U 320U
65 1800J 300J 670J 920J
14U 1400U 140U eoou 320U
14U 1400U 140U 690U 320U
100 3300J 5DOJ 2600J 1600J
14U 1400U 140U 690U 320U
300 fJSOOJC 1300J 5700J 4800J
72U 6900U aaou 3400U 1600U
14U 1400U 140U 690U 320U
72U 6900U aaou 3400U 1600U
72U 6900U aaou 3400U 1600U
650 21000J 7100J 16000J 16000J ••• D.4 4.1 3.58 7.3
84.3J 198J 32.4J 9.3J 23.8J
51.0J 121J 47.7J 12.0J 60.SJ
• SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURINO MARCH -APRIL 1991
TAB 4-3(1/1411121
ER-127 ER-130
7/25/90 7/25/90
40U 750U
40U 520J
40U 750U
40U 750U
40U 750U
40U 750U
40U 750U
40U 750U
81U 1500U
130 5600J
a,u 1500U
81U 1500U
260 15000JC
B1U 1500U
660 41000JC
400U 7500U
81U 1500U
400U 7500U
400U 7500U
2100 130000J
14.8 20.0
188J 63.eJ
102J 21DJ
SS-114-o SS-116--0 SS-117--0
ER-138 ER-139 ER-141
7/25/90 7/25/90 7/25/90
.. . ..... .. > .
aau 28U 43U
82J 130J 130J
86U 28U 43U
aau 2BU 43U
BOU 28U 43U
Beu 60J 44J
BOU 26U 43U
aau 2BU 43U
170U 57U 87U
170U 160J 230J
170U 57U B7U
170U 57U 67U
460 800J 800J
170U 57U B7U
760 1600J 1700J
aaou 280U 430U
170U 57U 67U
860U 280U 430U
860U 280U 430U
4700 6500J 1BooOJ
4.1 4.0 2.6U
5.2J e.eJ 3.DJ
14.4J 12.9J 1B.5J
- -
SS-118-0
ER-144
7/25/flO
• ?
130J
D70J
110J
110J
1DOJ
350J
180U
180U
ll30J
7DOJ
350U
350U
3300J
350U
3800J
1800U
350U
1800U
1800U
34000J
6.D
3.2J
82.eJ
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
SAMPLE ID:
LAB NUMBER:
ALPHA-BHC
BETA-BHC
DELTA-BHC
GAMMA-BHC
HEPTACHLOR
ALDRIN
HEPTACHLOR EPOXIDE
ENDOSULFAN I
DIELDRIN
4,4'-DDE
ENDRIN
ENDOSULFAN II
4.4'-DDD
ENDOSULFAN SULFATE
4,4'-DDT
METHOXYCHLOR
ENDRIN KETONE
ALPHA-CHLORDANE
GAMMA-CHLORDANE
TOXAPHENE
AROCLOR-1016
AROCLOR-1221
AROCLOR-1232
AROCLOR-1242
AROCLOR-1248
AROCLOR-1254
AROCLOR-1260
NOTES:
TABLE4-4
PHASE 2 BACKGROUND SOILS -TCL PESTICIDES
GEIGY CHEMICAL CORPORATION SITE
SS-121 SS-122
ER-170 ER-171
8/22/90
a.SU a.7U
a.SU a.7U
a.SU a.7U
a.SU 8.7U
8.SU 8.7U
8.SU 8.7U
8.SU 8.7U
8.SU 8.7U
17U 17U
75 76
17U 17U
17U 17U
32 22
17U 17U
110 74
BSU 87U
17U 17U
BSU a1u
BSU 87U
260 180
BSU a1u
BSU a1u
asu 87U
asu 87U
BSU a1u
170U 170U
170U 170U
RESULTS IN UG/KG. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
4-19
TAB 4-4 (1/14/92)
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
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TABLE 4•4 (CONTINUED)
PHASE 2 BACKGROUND SOILS -TAL METALS
GEIGY CHEMICAL CORPORATION SITE
SAMPLE ID: SS-121
LAB NUMBER: ER-170
SAMPLE DATE: 8/22/90
COMMENTS: BACKGROUND
l•.·••.·.··.••I••·•·••}••·•••i{•·• i~~; )f ? ..
........ I ·•··• t 1::, .::::_:_:_:_: .':'> ...
i I .. . =.\:_..··:C_.: .. -.. :_:,:.::: ·• :· ; ', :-:,,:: -,:•· \>:':: .
ALUMINUM 2660
ANTIMONY 12.7U
ARSENIC 0.63U
BARIUM 1.2B
BERYLLIUM 0.22U
CADMIUM 0.89U
CALCIUM 105
CHROMIUM 2.7
COBALT 2.9U
COPPER 2.7U
IRON 1640
LEAD 7.6J
MAGNESIUM 83.3B
MANGANESE 12.7
MERCURY 0.10U
NICKEL 3.4U
POTASSIUM 160U
SELENIUM 0.23
SILVER 2.0U
SODIUM 90.2
THALLIUM 0.42U
VANADIUM 3.SU
ZINC 15.3.J
CYANIDE 0.53U
NOTES:
RESULTS IN MG/KG. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN BLANK AT A SIMILAR CONCENTRATION.
J • QUANTITATIVE ESTIMATE
4-20
TAB 4-4 (1/14/92)
SS-122
ER-171
8/22/90
BACKGROUND
••• •••
. .......
·•·•
2140
11.5U
0.71
8.9
0.20U
0.81U
907
2.1
2.6U
2.7
1380
20.0J
158
20.2
0.10U
3.4B
144U
0.22U
1.8U
50.3B
0.43U
3.2
20.SJ
0.52U
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TABLE4-5
PHASE 2 SOILS
SAMPLE LOCATIONS
ABOVE SIGNIFICANT CONCENTRATIONS*
GEIGY CHEMICAL CORPORATION SITE
10-100 mg/kg >100 mg/kg
.... · GRID LOCATION · ? \GRID.LOCATION/ ··
SS-46 SS-110
SS-49 SS-63
SS-51
SS-57
SS-58
SS-59
SS-61
SS-62
SS-67
SS-71
SS-90
SS-92
SS-93
SS-103
SS-105
SS-106
SS-117
SS-119
*SIGNIFICANT CONCENTRATION WAS DEFINED IN THE
RI/FS WORK PLAN AS A CONCENTRATION LEVEL OF
10 mg/kg OR GREATER TOTAL BHC, TOTAL DDT, OR
TOXAPHENE
TAB 4-5 (1 /14/92)
4-21
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-.,
'/ I ~ ~ /;
// //
//
// ~ // LI ---i_,
// 0 /1/ -I r1-
// ~ ! {f /~ .. SS-121 BODY SHOP ~ / / SS-110 ~ I;/\ 1/ A -Nil
A -0.:S2J B -0.217
I I B -61.BJ C -0.260 I I I C -130J
I I
SS-93 I l / I SS-◄'3 ' f( 1, .... 1.1!1 " A -t.86J
A -0.48J SS-103 'IIACICllR!lLl<I SS-90 SS-92 B -S0.9J ,v1f SS-46 B -7.BJ SS-tOS l C -78J
/ f A -0.12J C -lSJ A -ND _L--~=("°./
A -0.7S0J A -0.lSOJ
B -t1,9J A -NO B -!◄,SJ B -7.◄J -----·-----
B -8.JJ C -2lJ SS-106 . •
/\.: C -UJ • B -'3.17J . C -26J C J5J .
C -tBJ A -ND . B -7.62J
:
C -lBJ STATE HIGHWAY 211
\
I
' ~ \ ..... ( ' .
... t.... j,,C.. L-L--"--~
, ~~ t---'"' ~-A"-"'
....... .._ __
~ ~---' ·1_----~ 1§ ...... u-., / .s: ~-iii" ~..__, . ' ~ ~, ..,
2
Pl-I DECIJ< ,..,, ~~ ...... I .--.. FORMER ' ~-'\
·. ::,
" \ ' WAIID«JUsE 9 WAflEHousr A
/::
.. ..,. l , ':_ n TANK PAO ~~ (CONCRE7t PAD ONLY) • '-~'\ 8'i ~ SS-122 ----_,, r . ,, '\ WOODS "' A -ND
-.a. ._ lss-119 "'-, .. B -0,172 ~~---ss-u, -\ fl
~U7 IA 1.32J \
C -0.180
~---, \~ B 7.89J \ !3
SS-51
. ' -t-J4J '\ -<
SS-57 11\/-SS "f
A -ND s '"""' . =---<7 \ \ . IJ
~ 5.SSJ A -ND
B -2I.9J ss 62
-<
!SJ #..,... ~-~ C -37J \ A -ND ; -B -l7J 11\/ ....
SS-71 C -59J ;-,.,,_,,--=-~-, SS-5'3 ~&>a ... FCIJNDA 110N ' A -ND ·->--1rfJ-~ B -27.4J A -ND SS-U7
C -54J B -5.lJ SS-67 ;lo
C -l4J A -0.130J t&,, B -2.83J A -0.062J
SS-58 SS-61 C -lBJ B -2.32J I I
A -0.369J A -ND C -!OJ \ \ B -18.SJ B -!4.3J .
C -83J C -54J I \ SS-63
A -ND I \
B -21.~5J I \ C -l30J ,I \
WOODS I I
LEGEND
SS-62@ StIIL. SAW'l.£S 'wlTH PCTICllE CDNCEHTRATICNS B£TVEEN 10 ~ AND 100 PP"-A = TOTAL BHC IN "g/kg FIGURE 4-4. PHASE 2 SURFACE SOIL SAMPLE
. LOCATIONS, PESTICIDE CONCENTRATIONS GREATER
H'J-sss SHALUN KDNITIJl 'w'll.L CI.H'ERi'IJST ltGUIF£R> B • TOTAL DDT IN "g/kg THAN 10 mg/q, JULY 1990
H._,-4* • .. ..
INTERtEJIATE MCNIT1JR VEl.L CS£CIHJ lffEIMlST MIJIFER) . ' GEIGY CHEMICAL CORPORATION SITE
C • TCXAPHENE IN "g/kg SCALE IN FEET :ABERDEEN, NORTH CAROUNA
PZ-1 t) DEEP MDHITCR VELL mmm LPPEIMlST MIJif'ElV • '
J = QUANTITATIVE ESTIHA TE
REFLECTS ElClSTINC SITE C0NDITI0NS (LE., COHlX110NS AFrn1 lEIOVAL alNlUClnJ DUR!NC Mlll0+--N'Rll. , .. , ). lfflil ERM-SOUTHEAST, INC
4-22
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All of the samples listed above, with the exception of
located along state Highway 211. sample SS-103
approximately 25 feet from the highway.
SS-103, are
is located
Zinc concentrations ranged from background concentrations ( 15. 3
mg/kg at SS-121 and 20.5 mg/kg at SS-122) to 732 mg/kg at SS-122.
The zinc concentration at the Phase 1 background soil location (SS-
04) was 38.3 mg/kg.
Concentrations of copper generally ranged from not detected to less
than 40 mg/kg. Background copper concentrations were at or below
the detection limit.
4.4.3 Phase 3 Soil Sampling and Analysis
The approved RI/FS Work Plan required that an extended sampling
program be conducted at those grid point locations identified in
the Phase 2 sampling effort as containing concentrations of total
BHC, total DDT and toxaphene at concentrations greater than 10
mg/kg (Table 4-5). In order to meet schedule compressions in the
RI/FS schedule, Phases 3 and 4 of the soil sampling effort, as
defined in the RI/FS Work Plan, were modified.
The revised Phase 3 sampling program, as approved by EPA, included
two components. Sample grid locations exhibiting concentrations
between 10 ppm and 100 ppm (Table 4-5) were resampled at two-foot
and five-foot depth intervals. Sample grid locations with
concentrations greater than 100 mg/kg (Table 4-5) were sampled at
two, five and ten-foot depth intervals. The samples were analyzed
for the site-specific parameters (pesticides, copper, lead and
zinc). In addition, EPA requested that ten percent of the samples
be analyzed for the TCL/TAL parameters and, one location, SS-82, be
analyzed for lead at the two and five-foot depth intervals. Lead
analysis at SS-82 was requested by EPA to assess the potential
vertical migration of lead found in surface soils near the highway.
Table 4-6 provides a list of the existing sample locations where
soils were collected and analyzed for the TCL/TAL parameters.
Samples were collected as close as possible to the original surface
sample locations; however, some locations were moved five to ten
feet to accommodate the drill rig. The following sample locations
were removed during the March-April 1991 Removal action: SS-72-2,
SS-73-2, SS-77-2, SS-78-2, SS-79-2, SS-81-2, SS-108-2, SS-113-2 and
SS-113-5. Pre-removal conditions are provided in Appendix C of
Appendix 4.
Soil borings were drilled with hollow stem augers in accordance
with the procedures outlined in the RI/FS Work Plan. Sample ss-
110, which was inaccessible to the drill rig, was collected with a
hand auger. Sample collection was achieved with a large diameter
(i.e., three-inch) split spoon sampler to allow recovery of a
sufficient sample volume for laboratory analysis in accordance with
CLP criteria. Samples, with the exception of those split with EPA,
were collected at one-foot depth intervals (i.e., zero to one foot,
4-23
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TABLE4-6
PHASE 3 SOIL SAMPLES
ANAL VZED FOR TCUTAL PARAMETERS*
GEIGY CHEMICAL CORPORATION SITE
TOTAL SAMPLE ANALYTICAL SAMPLE
ID# INTERVALS PARAMETERS
(FT. BELOW SURFACE)
SS-48 10 5 & 10
SS-63 10 5 & 10
SS-66 10 5 & 10
SS-98 10 5 & 10
ss-113•• 10 5 & 10
SS-82* 5 2&5
NOTES:
(1) TCUTAL: PESTICIDES/PCS'$, VOLATILES, SEMI-VOLATILES,
AND METALS. CYANIDES ANALYSIS WAS NOT REQUIRED.
TCUTAL(1)
TCUTAL(1)
TCUTAL(l)
TCUTAL(l)
TCUTAL(1)
LEAD
• SAMPLE SS-82 ANAL VZED FOR LEAD ONLY. REFERENCE SECTION 4.3.3.
• • SOILS FROM LOCATION SS-113-5 WERE REMOVED DURING THE
REMOVAL ACTION CONDUCTED DURING MARCH -APRIL 1991.
THROUGH APRIL 1991.
TAB 4-6 (1 /14/92)
4-24
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two to three foot, etc.). Samples split with EPA were collected
and composited over a two foot depth interval (i.e., one to three
feet, four to six feet, etc.) to ensure collection of an adequate
sample volume. Decontamination of the augers and sampling
equipment was in accordance with procedures outlined in the RI/FS
Work Plan.
The two, five and ten-foot depth samples were sent to Compuchem
Laboratories for CLP analysis. The CLP laboratory analytical
results for the Site specific parameters are presented in Table 4-
7. The TCL/TAL volatile, semi-volatile and metals results are
presented in Table 4-8. No volatile or semi-volatile constituents
were detected in concentrations above the detection limit.
In addition, select samples were analyzed for Total Organic Carbon
(TOC) and cation Exchange Capacity (CEC). This data, presented on
Table 4-9, is to be used to assess contaminant migration and
mobility.
Twenty samples at the two-foot depth interval indicated the
presence of pesticide constituents. Of those samples, only three
indicated total pesticide constituents greater than 10 mg/kg: ss-
51-2 (50 mg/kg), SS-58-2 (32 mg/kg), and ss-100-2 (24 mg/kg).
Pesticides were detected in ten samples (Table 4-10) at a depth of
five feet; however, only one sample (SS-73-5) exhibited a total
pesticide concentration greater than 10 mg /kg. Four samples
indicated concentrations of pesticides at the ten-foot sample
interval. As shown on Table 4-11, constituents detected in the
ten-foot sample interval were well below 10 mg/kg.
concentrations of copper ranged from 1.1 mg/kg (SS-92-2) to 27.5
mg/kg (SS-81-5). Zinc concentrations ranged from 1.6 mg/kg (SS-73-
10) to 76.2 (SS-109-2); and, concentrations of lead ranged from 1.2
mg/kg (SS-92-2) to 68.9 mg/kg (SS-99-2). Lead concentrations in
sample SS-82 were 3.80 mg/kg at the two foot depth interval and
1.80 mg/kg at the ten foot interval. The concentrations of lead in
the subsurface soils were two orders of magnitude less than the
surface soil lead concentrations indicated in the Phase 2 sample
(i.e., 336 mg/kg).
4.4.4 Phase 4 Samples -Additional Information
Additional samples were collected and analyzed at various stages
during the RI study. The purpose of these sampling efforts was to
obtain more information on Site characteristics and to further
delineate the extent of contamination. A description of these
additional samples is provided below.
4.4.4.1 Off-Site Soil Boring
During the Site investigation conducted by NUS in 1988 (7), soil
samples were collected near an old foundation located south of the
Geigy Chemical Corporation (Reference Figure 4-5). The previous
4-25
-.,. I "' "' --- ----- -- - ---l!!!!'!I -I TABLE4-7 PHASE 3 SOIL SAMPLES -SITE SPECIFIC PARAMETERS EXISTING SITE CONDITIONS • SAMPLE ID: Ss--48-2 I Ss--48-5 I Ss--48-2 I Ss--48-5 I S$--48-10 I Ss--49-2 I Ss--49-5 I SS-51-2 I SS--61--6 I SS--67-2 I SS--67--6 LAB NUMBER: 385817 I 385910 I 395912 I 385896 I 385900 I 385914 I 385911 I 385821 I 385813 I 38n04 I 387888 SAMPLE DATE: 1214/90 I 1214/90 I 1214190 I 1214/90 I 1214190 I 1214/90 I 1214/90 I 1214/80 1 1214/80 I 12111/90 I 12111/90 COMMENTS: ALPHA-BHC UG/KG 9.0U 9.1U BETA-BHC UG/KG 9.0U 9.1U DELTA-BHC UG/KG 9.0U 9.1U GAMMA-BHC UG/KG 9.0U 9.1U HEPTACHLOR UG/KG 9.0U 9.1U ALDRIN UG/KG 9.0U 9.1U HEPTACHLOA EPOXIDE UG/KG 9.0U 9.1U ENDOSULFAN I UG/KG 9.0U 9.1U OIELORIN UG/KG ,au 18U 4.4'-0DE UG/KG 18U 18U ENDRIN UG/KG ,au ,au ENDOSULFAN II UG/KG ,au 18U 4,4'-00D UG/KG ,au ,au ENDOSULFAN SULFATE UG/KG 18U 18U 4,4'-00T UG/KG ,au 18U METHOXYCHLOR UG/KG 90U 91U ENDRIN KETONE UG/KG ,au 1BU ALPHA-CHLORDANE UG/KG 90U 91U GAMMA-CHLORDANE UG/KG 90U 91U TOXAPHENE UG/KG 180U 180U COPPER MG/KG 5.2 4.7 LEAD MG/KG 2.4B 4.0 ZINC MG/KG 108 3.4 NOTES: DATA HAS BEEN VALIDATED. U • NOT DETECTED AT THE DETECTION LIMIT INDICATED. B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION. C • CONFIRMED BY GC/MS. J • QUANTITATIVE ESTIMATE. 8.5U a.au 12 8.8U 8.5U 8.BU I.SU a.au 8.SU a.au 8.SU a.au 8.SU a.au 8.SU a.au 17U 18U 130 ,au 17U 18U 17U 18U 17U 18U 17U 18U 180 ,au 85U 88U 17U 18U 85U 88U 85U 88U 1000 180U 5.4 5.4 3.7B 2.9J 9.0 5.3 SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991 9.1U a.eu I a.6U I a.eu I s1oc I a.3U I a.au 9.1U a.eu I a.6u I 8.eu I 460U I a.3u I a.au 9.1U B.9U B.6U 8.9U 460U 9.3U a.au 9.1U 8.9U 8.6U 8.9U 460U 9,3U a.au 9.1U B.9U 8.0U 8.9U 460U 9.3U a.au 9.1U B.9U 8.6U 8.9U 460U 9.3U a.au fiUU 8.9U 8.6U 8.9U 460U 9.3U a.au 9.1U ,au 17U 18U 910U 19U 18U 18U 18U 58 ,au 2500C 19U 18U 18U ,au 17U ,au 910U 19U ,au 18U 18U 17U 18U 910U 19U ,au ,au ,au 17U ,au 1400C 19U ,au 18U ,au 17U 18U 910U 19U ,au ,au 18U 170 18U BOOOC ,au ,au 18U 89U 86U 89U 4600U 93U 88U 91U 18U 17U 18U 910U 19U ,au 18U 89U 86U 89U 4600U 93U 88U 91U 89U 86U 89U 4500U 93U 88U 91U 180U 810 180U 38000C 190U 180U ,aou 5.3 7.0 6.3 17.7 3.4 4.7 3.1 7.5J 8.408 4.58 27.58 1.6B 2.3.J 2.7 5.3 17.3 5.6 57.9 4.0 9.58 3.28 TAB 4-7 (1/14/92) l!l!!!!!I l!!!!!!!!!I
-
,,.
I
"' --.J
---- - - - -- ---- --
TABLE4-7
PHASE 3 SOIL SAMPLES-SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS "
SAMPLE ID: SS-58-2 SS-58-5
LAB NUMBER: 387687 387695
SAMPLE DATE: 12/11/90 12/11/90
COMMENTS:
··•·
···•·· ry
._._. :,,:.,,::.:::::\:":::=' dW/'i'fi I I•I ? .••.
\. i\•··.• ·• •·••. ·•
ALPHA-BHC UG/KG 110J 8.BU
BETA-BHC UG/KG 180J a.au
DELTA-BHC UG/KG 120J a.au
GAMMA-BHC UG/KG 78J a.au
HEPTACHLOR UG/KG 9.1U a.au
ALDRIN UG/KG 9.1U a.au
HEPTACHLOR EPOXIDE UG/KG 9.1U a.au
ENDOSULFAN I UG/KG 9.1U a.au
DIELDRIN UG/KG 280J 18U
4,4'-00E UG/KG 1000JC 18U
ENDRIN UG/KG 18U ,au
ENDOSULFAN II UG/KG ,au 18U
4,4'-000 UG/KG 1300JC 18U
ENDOSULFAN SULFATE UG/KG ,au 18U
4,4'-0DT UG/KG 6400JC 18U
METHOXYCHLOR UG/KG 91U aau
ENDRIN KETONE UG/KG 18U ,au
ALPHA-CHLORDANE UG/KG 91U aau
GAMMA-CHLORDANE UG/KG 91U aau
TOXAPHENE UG/KG 24000JC 180U
COPPER MG/KG 14.9 11.5
LEAD MG/KG 25.7 3.9
ZINC MG/KG 22.4 4.98
NOTES. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
C • CONFIRMED BY GC/MS.
J • QUANTITATIVE ESTIMATE.
SS-59-2 SS-59-5 S5-81-2
386811 388809 386219
12/6,00 12/6/90 12/5/90
• .......... •.
••• -..
7.9U 9.0U a.au
7.9U 9.0U a.au
7.9U 9.0U 8.BU
7.0U 9.0U a.au
7.9U 9.0U a.au
7.9U 9.0U a.au
7.9U 9.0U a.au
7.9U 9.0U 8.BU
16U 18U 18U
18U 18U 18U
18U 18U 18U
18U ,au 18U
18U 18U 18U
18U 18U 18U
16U 18U 18U
79U 90U aau
18U 18U 18U
79U 90U aau
79U 90U aau
180U 180U 180U
8.7 7.9 5.4
3.7 3.5 3.2
7.0B 8.0B 4.1
SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991
TAB 4-7 (1/14/92)
SS-61-5
386234
12/5/90
<::JI/JI?? .... ··
a.8U
8.6U
a.8U
a.BU
a.8U
8.8U
8.8U
8.8U
17U
17U
17U
17U
17U
17U
17U
88U
17U
88U
88U
170U
10.4
2.5
5.2
SS-62-2 SS-62-6 $$-{13-2 6S-e3-6
388789 388782 38671MI 38ffTT7
12/8/90 12/8/90 12/6/rlO 12/6/rlO
>> I: ■i ■ • ••
9.1U a.au a.au o.ou
9.1U a.au a.au 9.0U
9.1U a.au a.au 9.0U
9.1U a.au a.au 9.0U
e:1u· a.au a.au 9.0U •. ,u a.au a.au 9.0U
9.1U a.au a.au 9.0U
9.1U a.au a.au 9.0U
18U 18U 18U 18U
18U 18U 18U 18U ,au ,au 18U 18U
18U 18U 18U 18U
18U 18U 18U ,au
18U 18U 18U 18U
,au 18U 18U ,au
91U aau aau 90U
,au ,au 18U 18U
91U aau aau 90U
91U aau aau 90U
18DU 180U 180U 180U
7.4 7.8 10.1 8.8
5.9 3.1 3.2 5.9
8.8 5.8 6.1 4.2
-- -
$$-{13-10
388788
12/8/90
I t Ii
9.0U
9.0U
e.ou
9.0U
9.0U
9.0U
9.0U
8.0U
18U
18U
18U
18U
18U
18U
,au
90U
,au
90U
90U
180U
0.49
4.8
1.2
-
t Iv
OJ
-- ------ - -- ---
SAMPLE ID: Ss--&1-2
LAB NUMBER: 386780
SAMPLE DATE: 12/6/90
COMMENTS:
TABLE4-7
PHASE 3 SOIL SAMPLES -SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS•
S5--64-5 S5--64-10 S-2 SS-05-5 SS-65-10
386788 386785 386794 386793 386795
12/6190 12/6/90 12/6/90 12/6/90 12/6/90
S5-66-2
386231
12/5/90
•·,.•.=,·::·.,, "II ,, .••··•· i/'··•·· -.. I t !l ' ur,1r1:s •··
ALPHA-BHC UG/KG 9.1U 8.9U 9.4U 9.4U
BETA-BHC UG/KG 9.1U 8.9U
DELTA-BHC UG/KG 9.1U 8.9U
GAMMA-BHC UG/KG 9.1U e.eu
HEPTACHLOR UG/KG 9.1U B.9U
ALDRIN UG/KG 9.1U a.9U
HEPTACHLOR EPOXIDE UG/KG 9.1U 8.9U
ENDOSULFAN I UG/KG 9.1U a.9U
DIELORIN UG/KG ,au 1au
4,4'-0DE UG/KG 1au ,au
ENDRIN UG/KG ,au 1au
ENDOSULFAN II UG/KG 1au 1au
4,4'-DDO UG/KG ,au 1au
ENDOSULFAN SULFATE UG/KG ,au 18U
4,4'-0DT UG/KG ,au ,au
METHOXYCHLOR UG/KG 91U aau
ENDRIN KETONE UG/KG 1au 1BU
ALPHA-CHLORDANE UG/KG 91U aeu
GAMMA-CHLORDANE UG/KG 91U aeu
TOXAPHENE UG/KG 180U 1BOU
COPPER MG/KG 9,3 7.0
LEAD MG/KG 3.9 2.8
ZINC MG/KG 7.7 5.7
NOTES. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
C • CONFIRMED BY GC/MS.
J • QUANTITATIVE ESTIMATE.
9.4U 36
9.4U 42
9.4U 9.4U
9.4U 9.4U
9.4U 9.4U
9.4U 9.4U
9.4U 9.4U
19U 49
19U 19U
19U 19U
19U 19U
19U 19U
19U 19U
19U 19U
94U 94U
19U 19U
94U 94U
94U 94U
190U 330
5.9 9.4
2.7 9.0
3.48 11.7
SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991
TAB 4-7 (1/14/92)
e.eu e.1u e.2u
8.9U 9.1U 9.2U
B.9U 9.1U 9.2U
8.9U 9.1U 9.2U
8.9U 9.1U 9.2U
8.9U 9,1U 9.2U
8.9U 9.1U 9.2U
8.9U 9.1U 9.2U
1au ,au ,au
,au ,au ,au
,au 1au ,au
,au 1au ,au
18U 18U ,au
1au 1au ,au
,au 18U ,au
BOU 91U 92U
,au 1BU ,au
aeu 91U 92U
89U 91U 92U
180U 180U 1BOU
2.4 2.9 5.0
3.5 1.98 5.5
2.7 5.1 4,3
Ss-e&---6 S5-66-10 6S-e7-2
386238 386235 389228
12/5/90 12/5/90 12/5/90
.. ··. -....
a.SU 9.1U 9.7U
8.9U 9.1U 9.7U
a.9U 9.1U 9.7U
a.au 9.1U 11.7U
8.9U 9.1U 9.7U
a.9U 9.1U 9.7U
8.UU 9.1U 9.7U
a.SU 9.1U 9.7U
1au 1au 19U
1au 1au 19U
1au 1au 19U
1au 1au 19U
18U 1au 19U
1BU 1BU 19U
,au 1au 190
aeu 91U 97U
18U 1au 19U
aau 91U 97U
aau 91U 97U
1SOU 1BOU 460
6.9 2.78 5.7
6.4 2.48 7.9
7.78 2.38 3.4
- --
SS-87-5
326230
12/5/90
!I:
: .·
····•·••·
a.au
a.au
a.au
a.au
a.au
a.au
a.au
a.au
1au
,au
,au
1au
18U
1au
18U
88U
1BU
88U
88U
180U
4.1
2.3
2.6
-
.,.
I
"' "'
-- -- --- -- - -- ----
SAMPLE ID: S5--69-2
LAB NUMBER: 386818
SAMPLE DATE: 12ll/90
COMMENTS:
TABLE4-7
PHASE 3 SOIL SAMPLES -SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS •
SS--69-5 S6-69-10 SS-71-2 SS-71-5 SS-72-5
386818 386820 38no2 387679 387680
12ll/OO 12ll/OO 12/11190 12/11/90 12/11/90
SS-72-10 SS-73-5 SS-73-10
387685 387883 387-
12/11/90 12/11/90 12/11/90
t : ·•·~--~·-.)'.i~ UNITS
••·•• •·· -•·•·· i I.•.••-•-··•·-•.•.•··•·-···•-•···•/Ii•I.I•.••·•III II•••I••·•I•I IIiII iit •-•·••·••••••• II II II I .......
'
ALPHA-BHC UG/KG a.au 9.0U
BETA-BHC UG/KG 67J 9.0U
DELTA-BHC UG/KG a.au 9.0U
GAMMA-BHC UG/KG 13J 9.0U
HEPTACHLOR UG/KG a.au 9.0U
ALDRIN UG/KG a.au 9.0U
HEPT ACHLOR EPOXIDE UG/KG a.au 9.0U
ENDOSULFAN I UG/KG a.au 9.0U
DIELORIN UG/KG 18U 18U
4,4'-DOE UG/KG 18U 18U
ENDRIN UG/KG 18U 18U
ENDOSULFAN II UG/KG 18U 18U
4.4'-000 UG/KG 18U 19U
ENOOSULFAN SULFATE UG/KG 18U ,au
4.4'-00T UG/KG 1au ,au·
METHOXYCHLOR UG/KG aau oou
ENDRIN KETONE UG/KG 1au 18U
ALPHA-CHLORDANE UG/KG 88U 90U
GAMMA-CHLORDANE UG/KG 88U oou
TOXAPHENE UG/KG 280J 1BOU
COPPER MG/KG 2.9 4.9
LEAD MG/KG 4.5 7.0
ZINC MG/KG 8.38 6.3B
NOTES. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
C • CONFIRMED BY GC/MS.
J • QUANTITATIVE ESTIMATE.
9.2U 210C
9.2U 400C
9.2U 33
9.2U 45
9.2U B.7U
9.2U 8.7U
9.2U 8.7U
9.2U 8.7U
18U 38
18U 74
18U 17U
18U 17U
,au 17U
18U 17U
18U 430C
92U 87U
18U 280
92U a7U
92U 87U
180U 1400
3.6 4.2B
3.5 2.4
4.5B 5.9B
SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1981
TAB 4-7 (1/14192)
9.2U 9.3U 9,3U 12000C 8.6U
19 69 9.3U 2100C 8.6U
9.2U 9.3U 9.3U 1900C a.nu
9.2U 9.3U 9.3U 1500C a.eu
9.2U 9.3U 9.3U 450U a.OU
9.2U 9.3U 9.3U 1500C 8.8U
9.2U 9.3U 9.3U 450U 8.8U
9.2U 9.3U 9.3U 460U 8.BU
18U 19U 19U 3400C 17U
18U 32 19U 910U 17U
18U 19U 19U 910U 17U
1au 19U 19U 910U 17U
1BU 19U 19U 910U 17U
,au 19U 19U 910U 17U
18U 66 19U 910U 17U
92U 93U 93U 4500U aeu
18U 19U 19U 910U 17U
92U 93U 93U 4500U 88U
92U 93U 93U 4500U 88U
180U 200 190U 280000C 170U
8.2 8.1 8.2 8.5 4.4
2.9 3.5 4.6 6.1 2.0
10.4 17.2 4.4B 18.8 1.68
SS--SS-78-10
388091 388059
12/12/90 12/12/90
i I r
9.0U B.9U
9.0U a.au
9.0U 8.9U
9.0U 8.9U
9.0U a.au
9.0U 8.9U
9.0U e.eu
9.0U 8.9U
18U 1au
100 59
18U 18U
18U 18U
270 230
18U 1au
2500C 3300C
180 110
18U 18U
oou 89U
90U 89U
3400 1900
8.8 3.7
4.58 2.38
8.1B 3.2B
--
-
,.,.
I w
0
-- -- ---- - ---- -
TABLE4-7
PHASE 3 SOIL SAMPLES -SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS•
SAMPLE ID: SS-n-5 SS-78-5 SS-79-5 ss-81-5
LAB NUMBER 386828 386835 386843 386834
SAMPLE DATE: 12ll/90 12n190 12n100 12ll/90
COMMENTS:
·····•·•
.. ,, : ........ : .. <.:::· J~n~ f ~ ... ·.•···••·•·•·• ••Iu•I )i·• /·.•• .rr \.> .·.,·.•··· .1 .•··•· •> } ·•· ).
ALPHA-BHC UG/KG 9.1U 9.1U
BETA-BHC UG/KG 9.1U 9.1U
DELTA-BHC UG/KG 9.1U 9.1U
GAMMA-BHC UG/KG 9.1U 9.1U
HEPTACHLOA UG/KG 9.tU 9.1U
ALDRIN UG/KG 9.1U 9.1U
HEPTACHLOR EPOXIDE UG/KG 8.1U 9.1U
ENDOSULFAN I UG/KG 9.1U 9.1U
DIELORIN UG/KG 18U 18U
4,4'-0DE UG/KG 18U 18U
ENORIN UG/KG 18U 18U
ENDOSULFAN II UG/KG 18U 18U
4,4'-000 UG/KG 18U 18U
ENDOSULFAN SULFATE UG/KG 18U 18U
4,4'-0DT UG/KG 18U 18U
METHOXYCHLOR UG/KG 91U 91U
ENORIN KETONE UG/KG 18U ,au
ALPHA-CHLORDANE UGIKG 91U 91U
GAMMA-CHLORDANE UG/KG 91U 91U
TOXAPHENE UG/KG 180U 180U
COPPER MG/KG 10.2 11.0
LEAD MG/KG 5.5 7.3J
ZINC MG/KG 30.9 21.BJ
NOTES: DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
C = CONFIRMED BY GC/MS.
J ~ QUANTITATIVE ESTIMATE.
8.9U 9.2U
s.eu 9.2U
8.9U 9.2U
8.9U 9.2U
8.8U 9.2U
8.9U 9.2U
8.9U 9.2U
8.9U 9.2U
18U 18U
18U 18U
18U 18U
18U 18U
18U 18U
18U 18U
18U 18U
89U 92U
18U 18U
89U 92U
89U 92U
180U tBOU
7.8 27.5
3.3J 5.BJ
20.0J 11.5.J
SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991
TAB 4-7 (1/14/92)
SS-90-2 SS-90-5
385923 385918
12/4/90 12/4/90
·,:. :. :, . .·•·••i)•····· ::
89J 9.1U
180J 11
59J 9.1U
48J 9.1U
S.4U 9.tU
8.4U 9.1U
8.4U 9.1U
8.4U 9.tU
32J 18U
17U 18U
17U 18U
17U 18U
17U 18U
17U 18U
17U 18U
84U 91U
17U 18U
84U 91U
84U 91U
310J 2200
1.5 2.8
2.0J 3.50J
10.1 3.1
SS-91-2 SS-91-5 S5-91-10
387274 387272 387268
12/10/90 12/10/llO 12/10/90
.·:. <•
..... : :> •r,. .....
•. \.••··•·?
1600C 9.2U 8.8U
820C 31 18
890C 18 8.8U
380C 9.2U 8.8U
170U 9.2U a.au
170U 9.2U a.au
170U 9.2U a.au
170U 9.2U 8.8U
340U 18U 18U
370C 18U 18U
340U 18U 18U
340U 18U 18U
630C 18U 18U
340U 18U 18U
3000C 18U 18U
t700U 92U BBU
340U 18U 18U
1700U 92U BBU
1700U 92U BBU
3400U 180U 1BOU
3.0 6.3 3.68
2.6 4.8 2.0B
4.2 7.8 8.0
--
-
"" I w .....
-- ----- --- -- -- -
SAMPLE ID: SS-82-2
LAB NUMBER: 387270
SAMPLE DATE: 12/10/90
COMMENTS:
TABLE 4--7
PHASE 3 SOIL SAMPLES-SITE SPECIFIC PARAMETERS
EXISTINQ SITE CONDITIONS •
SS-02-6 SS-U3-2 Ss-"3---5 SS-08-2 SS-08-6
387271 388227 388228 386228 386239
12/10/UO 12/41110 12/4/90 12/5/VO 12/5/VO
ss-oa-10 ~2 88-.-.6 88-100-2
386237 385918 3851124 3872TT
12/5/VO 12/41110 12/41110 12/10/IICI
( • • C .}. \(. ... ••·· --·-:.;.' ? ' /. .. •>• '
··•··.·\•.• .. ····•I••·•.·•··•···••I•·· ····•.x•·····•I·}••··•·r·•···•····•·t·:•·· ....•.••• / •••.. \ •• Y>•······.•····••···•·.·>I-ulirre ·•·· .. ······ ..... . :r. ·::,::: .. ·.-,:·;,.·_ -:· :,:.-·-.-·:-.-.:-.. . •··• ••·· .-,,, : ,_,.-, -::-.?·: :-:: ................. ·•·. :: •• ···•·• •>.: ::•... .................... . ·:::.: ·•·>-.• .. .,·
ALPHA-BHC UQ/KQ 24 411
BETA-BHC UQ/KQ 12 38
DELTA-BHC UQ/KQ 8.2U 23
GAMMA-8HC UQ/KQ 11 21
HEPTACHLOR UQ/KQ 8.2U 9.2U
ALDRIN UG/KG 8.2U 0.2U
HEPT ACHLOR EPOXIDE UQ/KQ 8.2U 8.2U
ENOOSULFAN I UG/KG 8.2U 0.2U
DIELORIN UQ/KQ 18U 18U
4,4'-00E UQ/KQ IOU 1au
ENORIN UQ/KQ IOU ,au
ENOOSULFAN II UQ/KQ 18U ,au
4,4'-0D0 UQ/KQ IOU ,au
ENOOSULFAN SULFATE UQ/KQ 18U ,au
4,4"-00T UQ/KQ IOU 53
METHOXYCHLOR UQ/KQ 82U 112U
ENORIN KETONE UQ/KQ IOU ,au
ALPHA~HLOROANE UQ/KQ 82U 02U
QAMMA-CHLORDANE UQ/KQ 82U 02U
TOXAPHENE UQ/KQ 1eou 440
COPPER MQ/KQ 1.18 8.4
LEAD MQ/KQ 1.28 4.7
ZINC MQ/KQ 3.58 8.7
NOTES: DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
C • CONFIRMED BY QCIMS.
J • QUANTITATIVE ESTIMATE.
a.5U a.au a.2u a.au o.ou a.5U a.ou 1200C
27 a.au 8.2U a.au Iii.OU l.5U 8.0U 180U
8.5U a.au 8.2U a.au 9.0U l.5U 8.0U 180U
I.SU a.au 8.2U a.au 9.0U a.5U 9.0U 180U
8.5U a.au· a.2u· a.au O.OU 48 8.0U 180U
I.SU a.au 8.2U a.au u.ou 130 8.0U 180U
8.5U a.au 8.2U a.au 9.0U l.5U 8.0U 180U
8.5U a.au 8.2U a.au 8.0U 8.5U o.ou 180U
17U 18U ,au 18U ,au 250 ,au 3110U .. ,au IOU ,au 1au 27 ,au 3IIOU
17U 18U IOU ,au ,au 17U ,au 3110U
17U ,au IOU ,au ,au 17U 1au 3IIOU
«J 18U IOU ,au 1au 17U 18U 3110U
17U ,au IOU ,au ,au 17U ,au 3110U
340 1au 18U ,au 1au 370 ,au 7IIOOC
85U aau 82U 88U aou l5U aou 1800U
17U 1au 10U 1au ,au 17U 1au 3IIOU
85U 88U 82U 88U aou 15U aou 1800U
85U 88U 82U aau aou l5U aou 1800U
810 180U 1eou 180U 180U 3100U 180U 115000C
2.408 4.8 1.8 5.4 4.0 1.7 4.0 3.3
5.40 5.0 2.1 7.3 2.0 08.8.J 3.28 40.1
8.70 0.0 3.0 7.08 3.08 10.6 8.4 48.7
SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURINQ MARCH -APRIL 1gg1
TAB 4--7 (1114112)
SS-10G-6
387275
12/10/IIQ
( ; . ...: ... . ..
··•
11
48
8.0U
8.0U
8.0U
st.OU
8.0U
II.OU
,au
18U
,au
18U
,au
,au
140
aou
18U
aou
aou
180U
1.0
4.8
21.3
-
t w
"'
-- - ---- - - -
TABLE4-7
PHASE 3 SOIL SAMPLES -SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS •
- --- -
SAMPLE ID: SS-101-2 SS-101-5 SS-103-2 SS-103-5 SS-105-2 SS-105-5 SS-106-2 SS-106-5 SS-108-5 SS-108-10 SS-109-2
LAB NUMBER: 387324 387264 385920 385915 385922 385916 387280 387279 387283 387280 387697
SAMPLE DATE: 12/10/90 12/10/90
COMMENTS:
.·.-.-.•.·.-.-.-... ·::,:= ·:.,,:
ALPHA-BHC UG/KG a.3U
BETA-BHC UG/KG 43J 50
DELTA-BHC UG/KG 8.3U 8.7U
GAMMA-BHC UG/KG 8.3U 8.7U
HEPTACHLOR UG/KG 8.3U 8.7U
ALDRIN UG/KG 8.3U 8.7U
HEPT ACHLOR EPOXIDE UG/KG 8.3U 8.7U
ENDOSULFAN I UG/KG 8.3U 8.7U
DIELDRIN UG/KG 17U 17U
4.4'-DDE UG/KG 17U 17U
ENDRIN UG/KG 17U 17U
ENDOSULFAN II UG/KG 17U 17U
4,4'-DDD UG/KG 17U 17U
ENDOSULFAN SULFATE UG/KG 17U 17U
4,4'-0DT UG/KG 18J 42
METHOXYCHLOR UG/KG a3U 87U
ENDRIN KETONE UG/KG 17U 17U
ALPHA-CHLORDANE UG/KG a3U 87U
GAMMA-CHLORDANE UG/KG 83U 87U
TOXAPHENE UG/KG 300 220
COPPER MG/KG 1.2B 5.1
LEAD MG/KG 1.5B 3.8
ZINC MG/KG 5.0 7.1
NOTES. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
C • CONFIRMED BY GC/MS.
J • QUANTITATIVE ESTIMATE.
12/4/90 12/4/90 12/4/90 12/4/90 12/10190 12/10/90 12/10/90 12/10/90 12/11/90
{ •//;?: .. · ·••·· ... :7:\) • ,: :-::-,:••
9.0U 9.0U 8.9U 8.9U a.au a.OU a.au a.au 10U
9.0U 9.0U 12 8.9U 8.BU e.eu a.au a.au 1800C
9.0U 9.0U 8.9U 8.0U a.au 8.9U a.au a.au 10U
9.0U 9.0U 8.0U B.9U a.au a.eu a.au a.au 10U
9.0U 9.0U 8.9U I.OU a.au 8.9U a.au a.au 10U
9.0U 9.0U B.9U 8.9U a.au I.OU a.au a.au 10U
9.0U 9.0U 8.9U 8.0U a.au 8.9U a.au a.au 10U
9.0U 9.0U 8.0U 8.9U a.au B.9U a.au a.au ,ou
,au ,au ,au ,au ,au ,au ,au 1au 20U
38J ,au 30 ,au ,au ,au 18U ,au 570C
,au ,au ,au 1au 1au ,au 1au ,au 20U
1au ,au ,au ,au ,au ,au 1au ,au 20U
,au 18U 18U 18U 18U 18U ,au ,au 20U
1au 18U 18U 18U 18U 18U 18U 18U 20U
180J 18U 230 18U 18U 18U 18U 18U 20U
oou 90U sou sou 88U BOU 88U aau 100U
18U 18U 18U 18U 18U 18U 18U ,au 20U
oou oou sou BOU SIU BOU 88U 88U 100U
oou oou sou 89U 88U 89U 88U 88U 100U
580J 180U 1400 180U 180U 180U 180U 180U 200U
8.5 8.5 8.9 8.2 7.7 7.9 7.0 8.1 11.8
2.98 1.6B 1.90B 3.0B 4.1 4.4 2.8 1.8 27.8
7.2 5.3 10.5 5.3 9.8 8.4 7.8 4.8 76.2
SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991
TAB 4-7 (1/14192)
--
-
.t> I w w
- -- --- -- - ------
TABLE4-7
PHASE 3 SOIL SAMPLES -SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS•
SAMPLE ID: SS-109--5 SS-110-2 SS-110-5
LAB NUMBER: 387700 387898 38TT01
SAMPLE DATE: 12/11/90 12/11/90 12/11/90
COMMENTS:
: .. : :.•• ·'· .·: il~;+l .·: <,··,.,, .••
:::;.}(!j :,• .. ."-.--·~-~-,' ·,i i ;_•·:::;Jj:t:>·C-.=:,: ,-:
ALPHA-BHC UGIKG 9.1 U 8.9U 9.0U
BETA-BHC UG/KG 8.1U 8.8U 9.0U
DELTA-BHC UG/KG 9.1U 8.8U 9.0U
GAMMA-BHC UG/KG 9.1U B.OU 9.0U
HEPTACHLOR UG/KG 8.1U 8.9U 8.0U
ALDRIN UG/KG 9.1U 8.9U 9.0U
HEPTACHLOR EPOXIDE UG/KG 9.1U 8.8U 9.0U
ENDOSULFAN I UG/KG 9.1U 8.9U 9.0U
DIELDRIN UG/KG ,au ,au 18U
4,4'-0DE UG/KG 18U 31 27
ENDRIN UGIKG ,au ,au 18U
ENDOSULFAN II UG/KG 18U 18U 18U
4.4'-0DD UG/KG ,au 88 92C
ENDOSULFAN SULFATE UG/KG 18U 18U 18U
4.4'-0DT UG/KG ,au 850C 500C
METHOXYCHLOR UG/KG 81U 88U 90U
ENDRIN KETONE UG/KG 18U ,au 18U
ALPHA-CHLORDANE UG/KG 81U 88U 90U
GAMMA-CHLORDANE UG/KG 81U 88U 90U
TOXAPHENE UG/KG 1BOU 1100 1000
COPPER MG/KG 10.10 11.5 7.7
LEAD MG/KG 8.80 4.2 4.7
ZINC MG/KG 8.60 10.2 12.8
NOTES: DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
C • CONFIRMED BY GC/MS.
J • QUANTITATIVE ESTIMATE.
S$-110-10 ss-112-2
387696 387258
12/11/90 12/10/90
~ 8.6U 8.5U
e.eu 26
8.6U 8.5U
8.6U 8.5U
8.6U 8.5U
8.6U 8.5U
8.6U 8.6U
8.8U B.5U
17U 17U
17U 17U
17U 17U
17U 17U
17U 17U
17U 17U
55 17U
86U 85U
17U 17U
86U 85U
86U 85U
170U HOU
16.6 2.0
2.2 2.3
11.7 4.8
SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1881
TAB 4-7 (1/14192)
SS-112-5
387278
12/10/90
II 9.2U
9.2U
8.2U
9.2U
9.2U
9.2U
9.2U
9.2U
,au
18U
,au
18U
18U
18U
,au
82U
,au
92U
82U
180U
8.1
5.7
8.5
SS-113-10 SS-116-2 SS-116-5 SS-117-2
385894 388805 388830 388802
12/4/90 12/7/90 12/7/90 12/7/90
III-
10U 8.7U 9.1U 8.9U
16 8.7U 13.J B.9U
54 8.7U 9.1U 8,9U
10U B.7U 9.1U 8.9U
10U 8.7U 9.1U 8.9U
10U 8.7U 9.1U 8.9U
10U 8.7U 8.1U 8.8U
10U 8.7U 9.1U 8.9U
20U 17U 18U 18U
20U 17U 18U 18U
20U 17U 18U 18U
20U 17U ,au 18U
20U 17U 18U 18U
20U 17U ,au 18U
20U 17U 18U ,au
100U 87U 81U 88U
20U 17U 18U ,au
100U B7U 91U 88U
100U 87U 81U 88U
200U 170U 180U 180U
8.1 5.2 10.2 8.7
4.BJ 5.8 4.5 5.2
12.2 7.0B 11.5 18.4
- -
l!!!!l!!!I
SS-117-5
388801
12/7/90
> i
8.8U
8.8U
8.9U
8.9U
8.9U
8.9U
8.9U
8.9U
18U
,au
18U
18U
18U
18U
,au
88U
,au
88U
88U
180U
5.0
4.0
8.9B
- -- -- ------ --- --
TABLE4-7
PHASE 3 SOIL SAMPLES-SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS •
SAMPLE ID: SS-118-2 SS-118-5
LAB NUMBER: 386804 386807
SAMPLE DATE: 12/7/00 12/7/00
COMMENTS:
I 222 .. · ""f II.r··••-····• ii • l•M'l"! ,. •·• ..
ALPHA-BHC UG/KG 9.0U a.7U
BETA-BHC UG/KG 9.0U 8.7U
DELTA-BHC UG/KG 9.0U 8.7U
GAMMA-BHC UG/KG 9.0U a.7U
HEPTACHLOR UG/KG 9.0U 8.7U
ALDRIN UG/KG 9.0U 8.7U
HEPTACHLOR EPOXIDE UG/KG 9.0U 8.7U
ENDOSULFAN I UG/KG 9.0U B.7U
DIELDRIN UG/KG 18U 17U
4,4'-ODE UG/KG ,au 17U
ENDRIN UG/KG 1au 17U
ENDOSULFAN II UG/KG 1au 17U
4.4'-DDD UG/KG ,au 17U
ENDOSULFAN SULFATE UG/KG 1au 17U
4,4'-DDT UG/KG ,au 17U
METHOXYCHLOR UG/KG 90U a7U
ENDRIN KETONE UG/KG 18U 17U
ALPHA-CHLORDANE UG/KG 90U a7U
GAMMA-CHLORDANE UG/KG 90U 87U
TOXAPHENE UG/KG 180U 170U
COPPER MG/KG 9.1 8.0
LEAD MG/KG 8.4 5.5
ZINC MG/KG 42.6 32.9
NOTES: DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
C • CONFIRMED BY GC/MS.
J • QUANTITATIVE ESTIMATE.
SS-119-2 SS-119-5
386799 386800
12ll/90 12/7/00
eg
·•.··•·•.·
9.0U 8.0U
9.0U 8.9U
9.0U 8.9U
9.0U 8.9U
9.0U 8.0U
9.0U 8.0U
9.0U 8.0U
9.0U 8.0U
18U ,au
,au ,au
,au ,au
,au ,au
,au ,au
,au ,au
,au ,au
90U a9U
1au 1au
90U a9U
90U 89U
180U 180U
4.5 4.90
4.9 3.9
12.4 7.8B
SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991
TAB 4-7 (1/14/92)
SS-130-5 SS-131-2
387682 387276
12/11/90 12/10/90
BSOF BSOF
SS-109 SS-101
·: : /: ~ ·•·• ··•
9.1U a.3U
9.1U 70J
9.1U . 8.3U
9.1U 8.3U
9.1U 8.3U
9.1U 8.3U
9.1U 8.3U
9.1U 8.3U
,au 17U
1au 17U
,au 17U
,au 17U
,au 17U
,au 17U
,au 44J
91U a3U
1au 17U
91U 83U
91U 83U
260 400
10.4 0.9B
5.0 1.5B
10.6 3.9
SS-133-2 SS-135-6 SS-138-5 SS-137-2
389260 387694 386215 38821'
12/6/90 12/11/00 12/6/90 12/5190
BSOF BSOF EPAOA EPAOA
SS-83 SS-71 --I ii ..... _. I
9.3U e.1u a.au 9.0U
9.3U 9.1U 14 9.0U
9.3U 9.1U a.au 9.0U
9.3U 9.1U 8.BU 9.0U
9.3U 9.1U 19 9.0U
9.3U 9.1U a.au 9.0U
9.3U 9.1U a.au 9.0U
9.3U 9.1U a.au 9.0U
,au ,au ,au 1au
1au 1au 21 1au
18U ,au 1au 1au
1au 1au ,au 1au
18U ,au 1au 1au
1au 1au 22 1au
18U ,au 1au 1au
93U 91U aau 90U
1au ,au 1au 1au
93U 91U aau 90U
93U 91U aau 90U
180U 18DU 180U 180U
9.0 7.8 NA 0.7
4.4 5.8 NA 0.78B
5.7 10.2 NA 1.1
--I!!!!!!
-
.,,
I w
V,
--- --
SAMPLE ID: Ss-<8-5
LAB NUMBER: 385896
SAMPLE DATE: 12/4/90
COMMENTS:
- -- - -
SS-48-10
385000
12/4/90
TABLE4-<1
PHASE 3 SOIL SAMPLES-1/0LATILES
EXJSTIN<l SITE CONDITIONS•
$5-6:>-5 S5-63-10 SS-66--5
386777 386TT9 666238
12/6/90 12/6/90 12/51110
- --- -
-'. l!l!!!!!!I
SS-66--10 S8-98-5 68418-10 6&-11S-10 ~137-2
386235 386238 386237 38581N 388214
12/51110 12/51110 12/5/IIO 12/4/90 12/5/IIO
EPA QA
.ti · ·• ·.:.x. }\\ )J \\ .... ■·· :c::Ci \CC··· : ·.:•·••· Ji •··•···>•••-•·••··•••·•·•ii ·)•.·••·•II··•·•-·•·t•·••··<•·-••·•••·• -••····•·····••·•·······•··••\-•
k .· ... .
I ::-f\U/::i.:(:)\< :'' ,,--.,,-·--· .. ?:<::) \):.: ··•••t .• : .... •.·· . •• > 11: i \;;~ 11~ : 11U 11U 13U / ,;: CHLOROMETHANE 11U 11U 11U
BROMOMETHANE 11U
VINYL CHLORIDE 11U
CHLOROETHANE 11U
METHYLENE CHLORIDE 178
ACETONE 1808
CARBON DISULFIDE 5U
1, 1-0ICHLOROETHENE 5U
1, 1-0ICHLOROETHANE 5U
1,2-0ICHLOROETHENE(TOT AL) 5U
CHLOROFORM SU
1,2-DICHLOROETHANE SU
2-8UTANONE 11U
1, 1, 1-TRICHLOROETHANE 5U
CARBON TETRACHLORIDE 5U
VINYL ACETATE 11U
BROMODICHLOROMETHANE 5U
1.2 OICHLOROPROPANE 5U
CIS-1,3-DICHLOROPROPENE 5U
TRICHLOROETHENE 5U
DIBROMOCHLOROMETHANE 5U
1, 1.2-TRICHLOROETHANE SU
BENZENE 5U
TRANS-1,3-DICHLOAOPROPENE SU
BROMOFORM 5U
4--ME1HYL-2-PENTANONE 11U
2-HEXANONE 11U
TETRACHLOROETHENE 5U
1, 1,2,2-TETRACHLOAOETHANE SU
TOLUENE SU
CHLOROBENZENE 5U
ETHYLBENZENE SU
STYRENE 5U
XYLENE (TOTAL) SU
NOTES. RESULTS IN U<l/K<l. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
8 • DETECTED IN BLANK AT SMILIAR CONCENTRATION.
11U 11U
11U 11U
11U 11U
168 398
298 428
eu OU
OU OU
OU OU
OU eu
OU eu
OU BU
11U 11U
OU OU
BU OU
11U 11U
OU BU
OU OU
eu eu
eu eu
BU eu
eu BU
OU eu
OU OU
OU BU
11U 11U
11U 11U
eu OU
OU eu
OU eu
eu eu
eu BU
OU OU
BU eu
• SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURIN<l MARCH -APRIL 11191
TAB 4-11 (1/141112)
11U
11U
11U
358
358
eu
OU
OU
OU
eu
OU
11U
OU
OU
11U
BU
eu
OU
OU
eu
OU
eu
eu
eu
11U
11U
eu
OU
OU
eu
eu
eu
BU
11U 11U 11U 11U 13U 11U
11U 11U 11U 11U 13U 11U
11U 11U 11U 11U 13U 11U
218 258 358 388 288 378
118 248 488 378 418 2ft8
OU OU OU OU OU OU
OU OU OU OU OU OU
OU OU OU OU OU OU
OU OU OU OU OU OU
OU eu OU OU OU OU
OU OU OU OU OU eu
11U 11U 11U 11U 13U 11U eu BU OU OU OU OU
eu eu OU OU OU OU
11U 11U 11U 11U 13U 11U
OU BU eu eu OU OU
BU BU OU OU OU eu
OU BU eu OU eu OU
OU BU eu eu eu OU
BU BU BU eu eu OU
eu BU OU eu eu OU
eu BU OU OU eu eu
OU BU eu OU eu OU
BU BU eu eu eu eu
11U 11U 11U 11U 13U 11U
11U 11U 11U 11U 13U 11U
eu BU eu eu OU eu
eu BU BU eu OU eu
eu eu OU eu eu OU
BU BU OU OU OU eu eu BU BU OU eu BU
OU eu eu eu eu eu
eu BU eu eu OU eu
I!!!
- ---- - -
SAMPLE ID: S5---48-5 SS-48-10
LAB NUMBER: 385896 385900
SAMPLE DATE: 12/4/90 1214/90
COMMENTS: ... ·--•-•--.••••, ........... ...... .. ----<-•-•--·
----•:-I C :::: (,) i{ )_ ._ ... ····-•••:)/-. -\ •--
:.,-:::= .:.-::-/;,::::'::
-----•---• ---•-•
PHENOL 360U 370U
BIS(2-CHLOROETHYL)ETHER 360U 370U
2-CHLOROPHENOL 360U 370U
1,3-DICHLOROBENZENE 360U 370U
1,4-DICHLOROBENZENE 360U 370U
BENZYL ALCOHOL 360U 370U
1,2-DICHLOROBENZENE 380U 370U
2-METHYLPHENOL 380U 370U
BIS(2-CHLOROISOPROPYL)ETHER 380U 370U
4-METHYLPHENOL 360U 370U
N-NITROS0-01-N-PROPYLAMINE 360U 370U
HEXACHLOROETHANE 360U 370U
NITROBENZENE 380U 370U
ISOPHORONE 360U 370U
2-NITROPHENOL 380U 370U
2,4-DIMETHYLPHENOL 380U 370U
BENZOIC ACID 1800U 1800U
BIS(2-CHLOROETHOXY)METHANE 380U 370U
2,4-0ICHLOROPHENOL 380U 370U
1,2,4-TRICHLOROBENZENE 380U 370U
NAPHTHALENE 380U 370U
4-cHLOROANILINE 380U 370U
HEXACHLOROBUTADIENE 360U 370U
4-CHLORO-3-METHYLPHENOL 360U 370U
2-METHYLNAPHTHALENE 360U 370U
HEXACHLOROCYCLOPENTADIENE 360U 370U
2,4,8-TRICHLOROPHENOL 360U 370U
2,4,5-TRICHLOROPHENOL 1800U 1800U
2-CHLORONAPHTHALENE 380U 370U
2-NITAOANILINE 1800U 1800U
DIMETHYLPHTHALATE 380U 370U
ACENAPHTHYLENE 360U 370U
2,6-DINITROTOLUENE 380U 370U
3-NITROANILINE 1800U 1800U
NOTES_ RESULTS IN UG/KG. DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN BLANK AT SMILIAR CONCENTRATION.
J = QUANTITATIVE ESTIMATE.
-
SS-63-5
386777
12/6/90
·-•-•-•-•-•·:· ..
----TABLE4-8
PHASE 3 SOIL SAMPLES-SEMI-VOLATILES
EXISTING SITE CONDITIONS •
S8-63-10 SS--<!6-5 SS-66-10
Jeane 386238 386235
12/6/90 12/5/90 12/5190
.-..
-
SS-98-5
386239
12/5/90
)·•·••··••·••·••rr .-•·· -•:•< :
·••-•· .,-.. ____ -_ .. _._--t••••·•••ilIIII I ? ) ( i
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U . 370U 370U 380U 370U
370U 370U 37DU 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
1800U 1800U 1800U 1800U 1800U
37DU 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 37DU 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
1800U 1800U 1800U 1800U 1800U
370U 370U 370U 380U 370U
1800U 1800U 1800U 1800U 1BOOU
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
370U 370U 370U 380U 370U
1800U 1800U 1800U 1BOOU 1800U
• SITE CONDITIONS AFTER REMOVAL CONDUCTED DURING MARCH -APRIL 1991
TAB 4-8 (1/14/92)
- - --
SS-98-10 SS-113-10 SS-138-5 SS-137-2
386237 385894 388215 388214
1215/00 12/4/90 1216190 1215/00
EPAOA EPAOA
---
III-.... , ... III I··•••••·•·•-
:
·t••·•{ I ·••-
····-370U 420U 980 370U
370U 420U 370U 370U
370U 420U 370U 370U
370U 420U 370U 370U
370U 420U 370U 37DU
370U 420U 370U 370U
370U 420U 370U 370U
·310u 420U 370U 37DU
370U 420U 370U 370U
370U 420U 370U 370U
370U 420U 370U 370U
370U 420U 370U 370U
370U 420U 370U 370U
370U 420U 370U 370U
370U 420U 120J 370U
370U 420U 1700 370U
1800U 2000U 1800U 1800U
370U 420U 370U 370U
370U 420U 370U 370U
370U 420U 370U 370U
370U 420U 370U 370U
370U 420U 370U 370U
370U 420U 370U 370U
370U 420U 2100 370U
370U 420U 370U 370U
370U 420U 370U 370U
370U 420U 370U 370U
1800U 2000U 1800U 1800U
370U 420U 130J 370U
1800U 2000U 1BOOU 1800U
370U 420U 370U 370U
370U 420U 370U 370U
370U 420U 370U 370U
1BOOU 2000U 680J 1800U
- -- -- --
SAMPLE ID: Ss--48-5 SS-48-10
LAB NUMBER: 385896 385900
SAMPLE DATE: 12/4/90 12/4/90
COMMENTS:
l·"c':·_ ., . .:,,,,.-:.,.-:: __ .... , .· =·'
~>
·,·
.. J '' •·· ,'•• ;/,:, ( : ., .=::.:::.:-······ .. .Ji :,= '.:·,:::;-.:;:-:,::=:-·': ..
ACENAPHTHENE 380U 370U
2,4-0INITAOPHENOL 1800U 1800U
4-NITROPHENOL 18000 18000
DIBENZOFURAN 380U 370U
2,4--0INITROTOLUENE 380U 370U
DIETHYLPHTHALATE 380U 370U
4-CHLOROPHENYL-PHENYLETHER 380U 370U
FLUORENE 380U 370U
4-NITROANILINE 1800U 1800U
4,8--0INITRO-2-METHYLPHENOL 18000 1800U
N-NITROSODIPHENYLAMINE 380U 370U
4-BROMOPHENYL-PHENYLETHER 380U 370U
HEXACHLOROBENZENE 380U 370U
PENTACHLOROPHENOL 1800U 1800U
PENANTHRENE 380U 370U
ANTHRACENE 380U 370U
DI-N-BUTYLPHTHALATE 380U 370U
FLUORANTHENE 380U 370U
PYRENE 380U 370U
BUTYLBENZYLPHTHALATE 380U 370U
3.3'-DICHLOROBENZIDINE 730U 730U
BENZO(A)ANTHRACENE 300U 370U
CHRYSENE 380U 370U
BIS(2-ETHYLNHEXYL)PHTHALATE 59J 80J
DI-N--OCTYLPHTHALATE 380U 370U
BENZO(B)FLUORANTHENE 380U 370U
BENZO(K)FLUORANTHENE 380U 370U
BENZO(A)PYRENE 380U 370U
INDEN0(1,2,3-CD)PYRENE 380U 370U
DIBENZ(A.H)ANTHRACENE 380U 370U
BENZO(G.H,l)PERYLENE 380U 370U
NOTES: RESULTS IN UG/KG, DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN BLANK AT SMILIAR CONCENTRATION.
J • QUANTITATIVE ESTIMATE.
-
SS-63-5
388777
12/6/90
-- - -
TABLE 4-8
PHASE 3 SOIL SAMPLES -SEMI-VOLATILES
EXISTING SITE CONDITIONS •
SS-63-10 SS-66-5 $~10
388TT9 388238 386235
12/6/90 12/5/90 12/5/90
,. .·•·• ,:::.• .... -.,=···:·: .·.\}~ If ? ) < { •··· ) ·.•.· ::· >-':-:·. '·:,_ . .· ··•··· ..
370U 370U 370U 380U
1800U 1800U 1800U 1800U
18000 1800U 18000 18000
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
1800U 18000 1800U 1800U
18000 18000 1BOOU 1BOOU
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
1800U 1BOOU 1800U 1800U
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
740U 740U 730U 780U
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
370U 370U 370U 380U
• SITE CONDITIONS AFTER REMOVAL CONDUCTED DURING MARCH -APRIL 1991
TAB 4-8 {1/14/92)
-- --l!!!!!!!!I I!!!!!!
SS--08-5 S$-98--10 SS-113-10 SS-138-5 SS-137-2
388239 386237 3858114 388215 388214
12/5/90 12/5/90 12/4/90 12/6/90 12/5/90
EPAOA EPA QA
•· -...... ./. I •·•·•·· ..
····•·•···•·••+)
·•·· If •·•··
370U 340J 370U
18000 1800U 2000U 1800U 1800U
18000 18000 2000U 1800U 1800U
370U 370U 420U 370U 370U
370U 370U 420U 370U 370U
370U 370U 420U 370U 370U
370U 370U 420U 370U 370U
370U 370U 420U 580 370U
18000 1800U 2000U 1800U 1800U
18000 1800U 2000U 1800U 1BOOU
370U 370U 420U 370U 370U
370U 370U 420U 370U 370U
370U 370U 420U 370U 370U
1800U 1800U 2000U 1800 370U
370U 370U 420U 370U 370U
370U 370U 420U 370U 370U
370U 370U 420U 1100 370U
370U 370U 420U 370U 370U
370U 370U 420U 1300 370U
370U 370U 420U 370U 370U
740U 740U 940U 740U 750U
370U 370U 420U 1100 370U
370U 370U 420U 370U 370U
370U 370U 88J 1200 370U
370U 370U 420U 370U 370U
370U 370U 420U 370U 370U
370U 370U 420U 370U 370U
370U 370U 420U 370U 370U
370U 370U 420U 370U 370U
370U 370U 420U 370U 370U
370U 370U 420U 370U 370U
--- -----
SAMPLE ID: SS--48-5 SS-48-10
LAB NUMBER: 12082-18S 12082-20S
SAMPLE DATE: 12/4/90 12/4/90
COMMENTS:
\-•·······-········~-'''
••
·-••-••·\·.•/·I.•• I ii•·•·.· --•---~ ·--· _: :
---
ALUMINUM 9430 10900
ANTIMONY 10.4U 10.SU
ARSENIC 2_6J 2_5.J
BARIUM 5_2 5_2
BERYLLIUM 0.24 0.39
CADMIUM 0.67U 0.69U
CALCIUM 1748 1708
CHROMIUM 11.1J 15.3J
COBALT 1.1U 1.2U
COPPER 5.4 5.3
IRON 5000 7490
LEAD 2_9J 7_6J
MAGNESIUM 108 103
MANGANESE 8.7 5.4
MERCURY 0.11U 0.11U
NICKEL 2.2U 2_8
POTASSIUM 2378 2408
SELENIUM 0.44U 0.46U
SILVER 5_1 69.5
SODIUM 192B 197B
THALLIUM 0.22U 3.3J
VANADIUM 20.1J 34.6J
ZINC 5.3 5.3
TOTAL ORGANIC CARBON 1235 421
NOTES. DATA HAS BEEN VALIDATED. RESULTS IN MG/KG.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN BLANK AT A SIMILAR CONCENTRATION.
J • QUANTITATIVE ESTIMATE.
--- - -
TABLE4-8
PHASE 3 SOIL SAMPLES -TAL METALS
EXISTING SITE CONDITIONS•
SS---63-5 SS-83-10 Ss--<l&--5
12112-14S 12112-15S 396072
12/6/90 1216/00 12/5/90
:-:
•->···•-·•.•iI·•·•.•-·••·_•.••··•:··••·•·•·••
: ·•·•r•c_•·-·•-·•···
:--•·
,-----•
•-
13900 3.4 18500J
10.SU 10.SU 4.9U
2_2 22.6 0.78
3_8 0.22U 9_0
0.22U 0.22U 0.22U
0.67U 0.67U 0.44U
160J 135.J 2418
14 0,49 13.8
1.1U 1.1U 1.1 U
8.8 0.49 8.9
5830J 3.9B 1330
5_9 4.8 8.4
95.2 128 188
4_0 0.22 3.8
0.11U 0.11U o.oeu
2.8 2.2U 2.2
79.3U 79.3U 193B
1.5 0.46 4.4U
0.45U 0.45U 0.44U
186J t73J 187B
0.22U 0.22U 0.22U
31.8 0.22U 10.5
4.2 1.2 7.7B
448 807 312
S8-66-10 SS-98-5 SS-98-10 SS-113-10
396066 396073 396070 12082-19S
12/5/90 1215/90 1215/90 12141110
III~~!:•·-•·--.•·· ·······•~1I~•····.· I.■.!
5.0U 4.9U 4.GU 11.2U
0.46U 2_2 0.88 20_2J
2_1 14.9 3.3 8.6
0.23U 0.22U 0.22U 0.45
0.46U 0.45U 0.45U 0.72U
132B 1338 978 3058
5_0 17.1 8.8 35.BJ
1.1U 1.tU 1.1U 4.1
2.78 6.4 4.0 9. 1
515 6600 1180 74800
2.4B 7.3 2.9 4.8J
51.9 202 87 225
1.0 3.8 1.7 5.6
o.oeu o.oeu o.oeu 0.12U
1.8U 3.0 1.8 2.4U
71.4U 1808 70.3U 3278
0.46U 4.6U 0.45U 0.48U
0.48U 0.45U 0.45U 1.1
1788 1818 1578 2388
0.23U 0.22U 0.22U 2.4U
4.8 24.9 7.3 83.4J
2.38 7.88 3.08 12.2
580 790 378 1813
• SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991.
TAB 4-8 (1/14/92)
I!!!!!!! !!!!!
SS-137-2
12112-01S
1215/90
EPA QA
•-•••-••.:..:: ..
~ 144
10.2U
0.91
0.29
0.22U
0.65U
132J
0.43U
1.1U
0.70
84J
0.788
22.58
0.85
0.11U
2.2U
77U
0.43U
0.43U
189J
0.22U
0.22U
1.1B
NA
D
D
E
m
I
I
I
I
I
I
I
I
I
I
I
I
I
I
'I
TABLE4-9
CATION EXCHANGE CAPACITY
AND
TOTAL ORGANIC CARBON
DECEMBER 1990
GEIGY CHEMICAL CORPORATION SITE
SS-91-10 270,000
SS-108-10 3,600,000
SD-10-10 2,600,000
TOTAL ORGANIC CARBON
, ~1;g8tf fi9:
SS-48-5 1235
SS-48-10 421
SS-66-5 312
SS-66-10 580
SS-98-5 790
SS-98-10 378
SS-113-10 1813
TAB 4-9 (1/14/92)
4-39
- - - ---- - - - - --l!!!!!l!!!l l!!!!!!!!I I!!!!!! !!!ii -= =a
,,.
I ,,.
0
TABLE 4-10
PHASE 3 SOIL SAMPLES
PESTICIDES DETECTED AT THE FIVE FOOT SAMPLE INTERVAL
GEIGY CHEMICAL CORPORATION SITE
:.:: :sAMPte::.(: :(SAMPLE c::: ::::,':::::.TOTAL.. •.::.::•·TOTAL:/·· ~ ... . ...... . ... .
.•. :.:•·•·•.···••·••···•·Nok(••··r::•• .•. ·:·rt•bATE ·••t?• ··•/:••·t··eHC's•:·•······ / •. ·••·•·······)···•:.o6f'·; ::•II /TOXAPH.EN·i:••·· .. :::METHOXVbHLdA Ibi~Lb81N•·>•···
SS-71-5 12/11/90 0.02 0.02U 0.2U 0.1U 0.01U 0.02U
SS-72-5 12/11/90 0.06 0.09 0.20 0.1U 0.01U 0.02U
SS-73-5 12/11/90 17.5 0.9U 280 4.5U 1.6 3.40C
SS-76-5 12/12/90 0.01U 3.0 3.4 0.2 0.01U 0.02U
SS-90-5 12/04/90 0.01 0.02U 2.2 0.1U 0.01U 0.02U
SS-91-5 12/10/90 0.05 0.02U 0.2U 0.1U 0.01U 0.02U
SS-92-5 12/10/90 0.13 0.05 0.44 0.1U 0.01U 0.02U
SS-100-5 12/10/90 0.06 0.14 0.2U 0.1U 0.01U 0.02U
SS-101-5 12/10/90 0.05 0.04 0.22 0.1U 0.01U 0.02U
SS-110-5 12/11/90 0.01U 0.62 1.0 0.1U 0.01U 0.02U
NOTES:
RESULTS IN mg/kg
U = NOT DETECTED AT THE DETECTION LIMIT.
TAB 4-10 (1/14/92)
- - - - ------ - - - ---!!!!!I I!!!!!!! -==
TABLE 4-11
PHASE 3 SOIL SAMPLES
PESTICIDES DETECTED AT THE TEN FOOT SAMPLE INTERVAL
GEIGY CHEMICAL CORPORATION SITE
SS-91-10 12/10/90 0.02 0.02U 0.18U 0.09U
SS-110-10 12/11/90 0.01U 0.06 0.17U 0.09U
SS-113-10 12/04/90 0.07 0.02U 0.20U 0.10U
NOTES:
RES UL TS IN mg/kg
U = NOT DETECTED AT THE DETECTION LIMIT.
TAB 4-11 (1/14/92)
11
11
11
11
II
I'.
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•·
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••
woocs
ABERDEEN AND
•
ESTIMA 'Tm l1<Q'€R II LINE
RDCKF1SH RAIi.ROAD
:) fOUHOMlOII
wooos
SS-58
®
ss-=•
sv-1 11
u
I -
800Y5':iG'
L--
•
' .......
\
/
EJ
SiAiE HIGHWAY 211 ----? ( -------------
-~ ---ss~~-9:JN'-
• ----;,---~-------
. -ss-9\H --.,.-_,,---.'---.. '
-----
-' a .r .. ~-93£.
__ _. tr----r_...,...:;:i. ___ .;._ _____ SS-'1\ SS-9t\_ SS~ '-·, I ..J.q !_ ].=.:.,! I '"'ii,~~~"'> ' "',:,,
SY Z
.._ _______ ...:.__j
, ,
~
,, 1
'\
LEGEND
pJoiASE 2 SURFACE Sall. LDCATIDNS PHASE 4 SURf ACE SOIL LOCATIONS (Hl!R!Z□NT AL nEl.!N£A Tlll!ll F'll~ SI.JRFAC:.: sAMPLE LOCATIONS ANALYZEll fllR sE!'l-vOLATILES
~ UURING AARCH-Af'lUL, 1991 REMOVAL EfF'llRn
orr-sITE S\JJL B~
0 40 L I
SCALE IN FEET
FIGlIBE 4-5. PHASE 4 SOIL SAMPLE LOCATIONS
. GEIGY CHE\(lCAL CORPORATION SITE .ABERDEEN, NORTH CAROLINA
\ IIIWJ ERM-SOUTHEAST, INC
4-42
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use of the foundation site and the original purpose of the former
foundation are not known. The .results of the NUS study indicate
isomers of BHC and toxaphene at a depth of 22 feet below ground
surface.
Although the foundation is not located on the Geigy Chemical
Corporation Site property and the USEPA and NUS could not specify
the exact location of the sample point, the PRPs agreed to collect
samples from a soil boring near the old foundation. Samples were
collected using split spoon samplers and a truck-mounted drill rig.
The samples were collected at the following depth intervals: 0-1
foot, 5-7 feet, 10-12 feet, 15-17 feet and 20-22 feet. The
analytical results, presented on Table 4-12, indicate 0.057 mg/kg
total DDT in the surface sample. Endosulfan sulfate was detected
in the 5-7 foot, 10-12 foot and 15-17 foot samples. However,
endosulfan sulfate has not been detected in on-site soils at the
Geigy Chemical Corporation Site.
4.4.4.2 Semi-Volatile Samples
EPA requested that the PRPs collect soil samples in the vicinity of
the former concrete pad and railroad track for analysis of semi-
volatile constituents. The PRPs agreed to collect two surface soil
samples and a sample of wood chips collected from a railroad tie.
As indicated on Figure 4-5, one sample, SV-1, was a surface sample
located between ss-110 and ss-10; sample SV-2 was located between
SS-71 and SS-72; and, sample SV-3 was located approximately 20 feet
south of SV-2 on the railroad tie. Sample SV-3 consisted of wood
chips collected by coring through a railroad tie with a drill.
Soils at these sample locations were subsequently removed during
the March through April 1991 removal action.
4.4.4.3. Horizontal Delineation of Contamination
The PRPs elected to collect additional surface samples to further
define the horizontal extent of pesticide concentrations greater
than 10 mg/kg. A list of the existing sample locations is provided
as Table 4-13 and shown on Figure 4-5. The following samples were
originaly collected for analysis but were removed during the March-
April 1991 Removal Action: SS-48-20E, SS-48-20W, SS-72-12S, SS-90-
l0N and SS-108-l0N. Pre-removal conditions are provided in
Appendix c of Appendix 4. The samples were collected in accordance
with the procedures outlined in the approved RI/FS Work Plan. A
summary of the analytical results for the existing locations is
presented on Table 4-14. Three samples indicated total pesticide
concentrations greater than 10 mg/kg. These samples are: SS-58-
20S (290 mg/kg), SS-63-20S (73 mg/kg), SS-91-l0N (32 mg/kg).
4.5 March-April 1991 Removal
In accordance with an amendment to the AOC, the warehouse
superstructures, pump house, and contaminated soils were removed
from the Site during March through April 1991. The AOC included
removal limits of 500 mg/kg toxaphene and 100 mg/kg gamma-BHC. The
4-43
--- --
SAMPLE ID:
LAB NUMBER:
LOCATION:
SAMPLE DATE:
.-:•.•·-:-:.::,::-.-••:
~[ ' I( I~ i
ALPHA-BHC UG/KG
BETA-BHC UG/KG
DELTA-BHC UG/KG
GAMMA-BHC UG/KG
HEPTACHLOR UG/KG
ALDRIN UG/KG
HEPTACHLOR EPOXIDE UG/KG
ENDOSULFAN I UG/KG
DIELDRIN UG/KG
4,4'-0DE UG/KG
ENDRIN UG/KG
ENDOSULFAN II UG/KG
4,4'-000 UG/KG
ENDOSULFAN SULFATE UG/KG
4,4'-0DT UG/KG
METHOXYCHLOR UG/KG
ENDRIN KETONE UG/KG
ALPHA-CHLORDANE UG/KG
GAMMA-CHLORDANE UG/KG
TOXAPHENE UG/KG
COPPER MG/KG
LEAD MG/KG
ZINC MG/KG
NOTES: DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT.
J • THIS RESULT IS A QUANTITATIVE ESTIMATE
TAB 4-12 (1/14/92)
-
TABLE 4-12
OFF-SITE BORING
- -
SITE SPECIFIC PARAMETERS
SB 0'-1' SB 5'-7' SB 10'-12'
ER-182 ER-183 ER-184
SOUTH OF SITE SOUTH OF SITE SOUTH OF SITE
8/24/90 8124/90 B/24/90
········•··>••·
... :··••.• .. ..
·•· .· ....
9.0U 8.4U 8.SU
9.0U 8.4U 8.5U
9.0U 8.4U 8.SU
9.0U 8.4U 8.SU
9.0U 8.4U 8.5U
9.0U 8.4U 8.6U
9.0U 8.4U 8.SU
9.0U 8.4U 8.5U
18U 17U 17U
21 17U 17U
18U 17U 17U
1BU 17U 17U
8.4J 17U 17U
18U 11J 17J
28 17U 17U
oou 84U 85U
18U 17U 17U
oou 84U 85U
oou 84U 85U
180U 170U t7DU
3.9B 2.5B 2.6U
21.5 3.2S 4.2
7.1 2.28 2.8B
- - - - ---
SB 16'-17' SB20'-22'
ER-185 ER-188
SOUTH OF SITE SOUTH OF SITE
B/24/90 B/24/90
I I l l ! II II I I
9.1U 9.0U
9.1U 9.0U
0.1U 9.0U
9.1U 9.0U
9.1U 9.0U
0.1U 9.0U
9.1U 9.0U
9.1U 9.0U
18U 18U
18U 1BU
18U 18U
18U 18U
18U 18U
22 24
18U 18U
91U oou
18U 18U
oou oou
oou oou
180U 180U
3.68 2.8U
2.2 2.0
1.78 1.8U
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TABLE 4-13
ADDITIONAL SURFACE SOIL SAMPLES
SS-58 TWENTY FEET SOUTH OF SS-58
SS-61 TWENTY FEET SOUTH OF SS-61
SS-62 TWENTY FEET SOUTH OF SS-62
SS-63 TWENTY FEET SOUTH OF SS-63
SS-64 TWENTY FEET SOUTH OF SS-64
SS-66 TWENTY FEET SOUTH OF SS-66
SS-91 TEN FEET NORTH OF SS-91
SS-92 TEN FEET NORTH OF SS-92
SS-93 TEN FEET NORTH & TWENTY FEET EAST OF SS-93
TAB 4-13 (1/14/92)
4-45
-----
SAMPLE ID: SS-58-20S
LAB NUMBER: 392019
SAMPLE DATE: 1f7/91
SAMPLE DEPTH/COMMENTS: 0-0.5 Fl.
--
TABLE4-14
PHASE 4 SOIL SAMPLES-SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS•
S~1-20S S5---{12-20S SS-63-20S SS-64-20S SS-88--20S
392020 392021 392022 392013 392015
117/91 1f7/91 1(7191 1f7/91 1f7/91
0-0.5 Ft. 0-0.5A. 0-0.5 Ft. 0--0.5 Ft. 0-0.5 Ft.
S5-91-10N
392012
1f7/91
0-0.6 Fl. •i< a~~il-·••-·· -< • I ·••·
22
ALPHA-BHC UG/KG 1500C 13 48U 200U 48U
BETA-BHC UG/KG 2000C 27
DELTA-BHC UG/KG 840C 9.3U
GAMMA-BHC UG/KG 820C 9.3U
HEPTACHLOR UG/KG 480U 9.3U
ALDRIN UG/KG 480U 9.3U
HEPTACHLOR EPOXIDE UG/KG 460U 9.3U
ENDOSULFAN I UG/KG 460U 9.3U
OIELDAIN UG/KCi 930U 18U
4.4"-DDE UG/KG 11000C 1000C
ENDRIN UG/KG 930U 18U
ENOOSULFAN II UG/KG 930U 18U
4,4'-DDD UG/KG 930U 26
ENDOSULFAN SULFATE UG/KG 930U 18U
4,4'-0DT UG/KG 54000C 1000C
METHOXYCHLOR UG/KG 4600U 93U
ENDRIN KEYTONE UG/KG 930U 18U
ALPHA-CHLORDANE UG/KG 4600U 93U
GAMMA-CHLORDANE UG/KG 4600U 93U
TOXAPHENE UG/KG 220000C 3900
COPPER MG/KG 5.7 5.2
LEAD MG/KG 24.2J 22.4J
ZINC MG/KG 23.0 13.1
NOTES: DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
C • CONFIRMED BY GC/MS.
J • QUANTITATIVE ESTIMATE.
48U
48U
48U
48U
48U
48U
48U
aeu
1400C
aeu
aeu
aeu
aeu
2000C
480U
aeu
480U
480U
5200C
4.3
25.7J
11.e
• SITE CONDITIONS AFTER REMOVAL CONDUCTED DURING MARCH -APRIL 1991
'
TAB 4-14 (1/14/92)
840C 160 290C 850C
200U 48U 150 88U
200U 48U 55 88U
200U 48U 47U 88U
200U 48U 47U aau
200U 48U 47U 88U
200U 48U 47U 88U
400U 130 94U 180U
1300C 380 eeoc 840C
400U 95U 94U 180U
400U 95U 94U 180U
400U 95U 94U 1000C
400U 95U 94U 1BOU
6700C 400 620C 14000C
2000U 480U 470U aaou
400U 95U 94U 180U
2000U 480U 470U BBOU
2000U 480U 470U aaou
84000C aeoou 4800U 15000C
7.5 4.7 2.6 4.6
35.1J 24.7J 11.0J 31.eJ
33.9 20.0 8.4 34.7
--
SS-Q2-10N 8S-03--10N 8S-03--20E SS-198-.05
392016 392023 392008 392014
1nl91 1(7/91 1f7/U1 1f7/Q1
0--0.5 Ft. 0--0.5 Ft. 0-0,6 A. BSOF
8S-03--10N
230C 52U 18 38
45U 52U 11U 11U
45U 52U 11U 11U
45U 52U 11U 11U
45U 52U 11U 11U
45U 52U 11U 11U
45U 52U 11U 11U
90U 100U 23U 21U
800C 480 180 370
90U 100U 23U 21U
90U 100U 23U 21U
300 100U 30 72
90U 100U 23U 21U
4IIOOC 1500C 440 1700C
450U 520U 110U 110U
90U 100U 23U 21U
450U 520U 110U 110U
450U 520U 110U 110U
9000U 3800 1900 4400
8.1 18.2 12.4 15.5
71.0J 137J 82.5.J 136J
48.4 141 84.4 123
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removal was conducted in accordance with the procedures outlined in
the Warehouse Removal Work Plan (4) and the Work Plan for Soils
Removal Associated with the Warehouse and Railroad Spur (5), as
approved by the EPA. The excavated areas are shown on Figure 4-6.
In some cases the areas excavated in the initial removal (Figure 4-
1) were widened and the maps indicate some overlap. A summary of
the volume of material removed from each area, including the depth
of excavations, is included in Table 4-15. A report documenting
the removal activities (6) has been submitted to EPA and is
included as Appendix 4. The analytical results of the post-removal
samples, indicating existing Site conditions, are presented in
Table 4-16.
4-47
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.,. -WATER VN..Y£
BOOT SHCP
Cl£ SlllRY cao:. a.cac
L __ _
... ...
STATE HIGHWAY 211
...... ---------__ @.._ -®=_--=-r.,---r.. ,;:-.... ~ = =
lxl't;=== -~--'&-----=--~ @
---~ ----
-) ---SS-108 cao:. •
C2l
..
r rnoin~-,-:J• WAREHOUSE B FO<IQca.c_
PAD
SS-76 WAREHOUSE A
SS-73
-:-:~r-J'--0-
ESTIMATED PROPERTY LINE
LEGEND
SURFACE SOIL/BORING LOCATIONS
C2] SEDIMENT SAMPLING LOCATIONS
[J EXCAVATION AREAS (MARCH-APRIL, 1991)
SD-15
4'--0-
0 50 ~!!"!!!5--•
SCALE IN FEET
IUl!l1IJRE S1tR£
SS-66
RD<TAL STa!ACE BU>C.
FIGURE 4-6. SOIL EXCAVATION AREAS
(MARCH-APRIL, 1991)
GEIGY CHEMICAL CORPORATION SITE
ABERDEEN, NORTH CAROIJNA
l:fffij ERM-SOUTHEAST, INC
4-48
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TABLE 4-15
SOIL VOLUMES REMOVED
MARCH -APRIL 1991
GEIGY CHEMICAL CORPORATION SITE
~-I! t :/ ... ,
• ···•.•······••t~·~~~~;••······· '::: . ?' ··•·····•·•··••o;;w;;c,·;i=Een•·
A EAST END OF FORMER WAREHOUSE A 20X20X7
B EAST END OF FORMER WAREHOUSE A 20 X 20 X 6.5
C EAST END OF FORMER WAREHOUSE A 20X20X11
D EAST END OF FORMER WAREHOUSE A 20 X 20 X7.5
E EAST END OF FORMER WAREHOUSE A 20X20X8
F EAST END OF FORMER WAREHOUSE A 20X20X11
G EAST END OF FORMER WAREHOUSE A 20 X20 X6.5
H EAST END OF FORMER WAREHOUSE A 20X20X6
I EAST END OF FORMER WAREHOUSE A 20X20X5
J EAST END OF FORMER WAREHOUSE A 20X20X5
K EAST END OF FORMER WAREHOUSE A 20X20X5
SD-9 NEAR RR TRACKS (SEE FIGURE 1-4) 80X20X1
SD-12 NEAR RR TRACKS (SEE FIGURE 1-4) 20X20X3
SD-14 NEAR RR TRACKS (SEE FIGURE 1-4) 20X20X 1.5
SD-15 NEAR RR TRACKS (SEE FIGURE 1-4) 20X20X4
SS-48 WEST OF DECON PAD (SEE FIGURE 1-4) 20X 20 X 0.5
SS-64 NEAR RR TRACKS (SEE FIGURE 1-4) 20X20X1.5
SS-66 NEAR RR TRACKS (SEE FIGURE 1-4) 20X20X1
SS-69 EAST OF FORMER WAREHOUSE (FIGURE 1-4) 20 X 20 X 0.5
SS-73 SW CORNER OF FORMER WAREHOUSE B 20 X 20 X 2.5
SS-76 BETWEEN FORMER WAREHOUSES (FIGURE 1-4 20X20X2
SS-91 NE CORNER OF FORMER WAREHOUSE A 20X20X1
SS-98 EAST END OF SITE, NEAR GRAVEL ROAD 20X20X1
SS-99 EAST END OF SITE, NEAR GRAVEL ROAD 20 X 20 X 1.5
SS-108 NW CORNER OF FORMER WAREHOUSE B 60X20X3
SS-113 NE CORNER OF FORMER WAREHOUSE A 30X20X5
-2800
2600
4400
3000
3200
4400
2500
2400
2000
2000
2000
1600
1200
600
1600
200
600
400
267
1001
800
400
400
600
5400
3000
TOTAL 49,368
NOTE: THESE SOILS HAD WERE FOUND TO HAVE A MEASURED WEIGHT OF 2107 TONS
TAB 4-15 (1/14/92)
4-49
-104
96
163
111
119
163
93
89
74
74
74
59
44
22
59
7
22
15
10
37
30
15
15
22
200
111
1,828
,,.
I en 0
--- - ---- - --
TABLE 4-18
BUILDING AND SOILS REMOVAL-CONFIRMATION SAMPLES
MARCH 22 -APRIL 9, 1991
SAMPLE ID:
LAB NUMBER:
SAMPLE DATE:
COMMENTS:
, ir : ;J~;~•
ALPHA-8HC
BETA-BHC
DELTA-8HC
GAMMA-8HC
HEPTACHLOR
ALDRIN
HEPTACHLOR EPOXIDE
ENDOSULFAN I
DIELDRIN
4,4'-00E
ENDRIN
ENDOSULFAN II
4,4'-000
ENDOSULFAN SULFATE
4,4'-DDT
METHOXYCHLOR
ENDRIN KETONE
ALPHA-CHLORDANE
GAMMA-CHLORDANE
TOXAPHENE
AROCLOR-1018
AROCLOR-1221
AROCLOR-1232
AROCLOR-1242
AROCLOR-1248
AROCLOR-1264
AROCLOR-1280
NOTES: DATA HAS BEEN VALIDATED.
RESULTS IN UG/KG.
A
11675.0
3/22/91
.{·••·
130
45
120
64
18U
18U
18U
18U
38U
38U
38U
38U
38U
38U
180
180U
38U
180U
180U
1200
180U
180U
1BOU
180U
180U
380U
380U
U • NOT DETECTED AT THE DETECTION LIMIT.
J • QUANTITATIVE ESTIMATE.
B C
11678.9 12871.6
3/22/{/1 4(2/91
.. •··
f••··•:········•·•· 99 170
45 130U
250 150
140 130U
17U 130U
17U 480
17U 130U
17U 130U
34U 280U
34U 280U
34U 280U
34U 280U
34U 280U
34U 280U
52 280U
170U 1300U
34U 280U
170U 1300U
170U 1300U
490 56000
170U 1300U
170U 1300U
170U 1300U
170U 1300U
170U 1300U
340U 2800U
340U 2800U
(1) INCLUDED AFFECTED SOILS FROM SD-10, SD-11, AND SD-12
(2) INCLUDED AFFECTED SOILS FROM SD-15, SD-18, AND SD-17
AOC LIMITS: 500 MG/KG TOXAPHENE AND 100 MG/KG GAMMA-8HC
TAB 4-18 (1/14192)
GEIGY CHEMICAL CORPORATION SITE
D E F G H I
11en.1 11900.8 12872.4 11904.0 11678.5 11902.4
3/22/91 3/26191 412/91 3/27/91 3/25/91 3127191
I •••II•·••••••
.···
.. •• ••· .
27 70 980
21 33 180 85 010 81
52 87 230 250 640 48
30 39 2<IC) 120 390 18U
17U 18 500 43 490 18U
17U 270 3300 140 1300 18U
17U 17U 120U 18U 130U 18U
17U 17U 120U 18U 130U 18U
34U 34U 240U 38U 280U 38U
34U 34U 240U 38U 280U 38U
34U 34U 240U 38U 280U 38U
34U 34U 240U 38U 280U 38U
34U 34U 880 38U 750 38U
34U 34U 2000 38U 280U 38U
34U 87 240U 170 5800 n
170U 170U 1200U 180U 1300U 180U
34U 34U 240U 38U 280U 38U
170U 170U 1200U 180U 1300U 180U
170U 170U 1200U 180U 1300U 180U
340U 8500 110000 1800 42000 1200
170U 170U 1200U 180U 1300U 180U
170U 170U 1200U 1BOU 1300U 180U
170U 170U 1200U 180U 1300U 180U
170U 170U 1200U 180U 1300U 180U
170U 170U 1200U 180U 1300U 180U
340U 340U 2400U 380U 2600U 380U
340U 340U 2400U 380U 21100U 380U
------
J K SS48 SS84
11901.8 11899.0 12873.2 11671.0
3128191 3128191 4/3191 3122191
155 87 180 130
110 150 130U 130U
20 46 130U 130U
18 28 130U 130U
43 78 130U 130U
18U 17U 130U 130U
18 17U 130U 130U
38U 34U 280U 280U
38U 34U 870 280U
38U 34U 280U 280U
38U 34U 280U 280U
38U 34U 810 290
44 34U 280U 280U
38U 34U 5100 570
180U 170U 1300U 1300U
38U 34U 280U 280U
180U 170U 1300U 1300U
180U 170U 1300U 1300U
2IIOO 3800 22000 18000
180U 170U 1300U 1300U
180U HOU 1300U 1300U
1BOU 170U 1300U 1300U
180U 170U 1300U 1300U
180U 170U 1300U 1300U
380U 340U 1300U 21100U
380U 340U 1300U 2800U
-- -- ---·---- ----- -
SAMPLE ID: SS88 SS69
LAB NUMBER: 11673.4 11897.4
SAMPLE DATE: 3/22/91 31225/91
COMMENTS:
TABLE4-18
BUILDING AND SOILS REMOVAL-CONFIRMATION SAMPLES
MARCH 22 -APRIL 9, 1991
GEIGY CHEMICAL CORPORATION SITE
SS73 SS76 SS91 $S98 SS99 5S108 ss 113
13539.0 13538.0 13541.0 11898.2 13540.2 11874.2 11903.2
4/8/91 4/8/91 4/8/91 3/25/91 4/8191 3/22/91 3127191
soe SO 12 S014 SO 15
13543.7 11970.0 13542.8 11872.8
419191 3/22/91 419191 3/22/91
(1) (2) ···ii I I~.~•~i.~ ... ·••···•· •·•·· Ii !~ {~ ~~-~ ······
} ··•·•·•·•· . .. ::·:: ···•··
ALPHA-BHC 18 72 140U 210 21000 170 200
BETA-BHC
DELTA-BHC
GAMMA-BHC
HEPTACHLOR
ALDRIN
HEPTACHLOR EPOXIDE
ENDOSULFAN I
DIELDRIN
4,4'-0DE
ENDRIN
ENDOSULFAN II
4,4'-0D0
ENDOSULFAN SULFATE
4,4'-0DT
METHOXYCHLOR
ENDRIN KETONE
ALPHA-CHLORDANE
GAMMA-CHLORDANE
TOXAPHENE
AROCLOR-1018
AROCLOR-1221
AROCLOR-1232
AROCLOR-1242
AAOCLOR-1248
AROCLOR-1254
AROCLOR-1280
NOTES: DATA HAS BEEN VALIDATED.
RESULTS IN UG/l<G.
71
500
17U
17U
17U
17U
17U
34U
34U
34U
34U
34U
34U
34U
170U
34U
170U
170U
440
170U
170U
170U
17DU
170U
340U
340U
U • NOT DETECTED AT THE DETECTION LIMIT.
J • QUANTITATIVE ESTIMATE.
870 140U
970 140U
17U 140U
17U 140U
17U 140U
17U 140U
17U 140U
81 280U
34U 280U
34U 280U
34U 280U
34U 280U
34U 280U
34U 280U
1700U 1400U
17U 280U
1700U 1400U
1700U 1400U
2800 7800
1700U 2800U
1700U 1400U
1700U 1400U
t700U 1400U
1700U 1400U
3400U 2BOOU
3400U 2800U
(1) INCLUDED AFFECTED SOILS FROM S0-10. S0-11. AND S0-12
(2) INCLUDED AFFECTED SOILS FROM S0-15, S0-18, AND S0-17
AOC LIMITS: 500 MG/l<G TOXAPHENE AND 100 MG/l<G GAMMA-BHC
TAB 4-16 (1/14192)
420 4100
410 120U
130U 3200
130U 250
230 780
130U 120U
130U 120U
2«>U 240U
320 1100
280U 240U
:i«>U 240U
850 770
2«>U 240U
12000 10000
1300U 1200U
:i«>U 240U
1300U 1200U
1300U 1200U
18000 27000
1300U 1200U
1300U 1200U
1300U 1200U
1300U 1200U
1300U 1200U
2800U 2400U
2600U 2400U
780 280 240 180 18U 150 14DU 82
150 130 48 130 18U 130U 140U 18U
180 130U 18U 50 18U 130U 140U 18U
25 330 18U 17U 19U 130U 140U 18U
16U 4400 18U 17U 18U 130U 14DU 25
21 130U 18U 17U 18U 130U 140U 18U
16U 130U 18U 17U 18U 130U 140U 18U
41 :i«>U 53 34U 38U 270 280U 120
32U 280U 52 34U 38U 280U 280U 38U
32U 280U 38U 34U 38U :i«>U 280U 38U
32U 280U 38U 34U 38U 2«>U 280U 38U
32U 280 120 34U 38U 280U 280U 38U
32U 280U 38U 34U 38U :i«>U 280U 38U
230 1100 330 71 82J 860 280U 170
160U 1300U 180U 170U 180U 1300U 1400U 180U
32U 2«>U 38U 34U 38U 2«>U 280U 38U
160U 1300U 180U 170U 180U 1300U 1400U 180U
160U 1300U 180U 14000 1BOU 1300U 1400U 180U
2200 8900 8400 170U 2200J 35000 5500 4000
180U 1300U 1BOU 170U 1BOU 1300U 1400U 180U
180U 1300U 180U 170U 180U 1300U 1400U 180U
180U 1300U 180U 170U 180U 1300U 1400U 180U
180U 1300U tBOU 17DU 180U 1300U 1400U 180U
160U 1300U 180U 170U 180U 1300U 1400U 180U
320U 2800U 380U 340U 380U 2600U 2800U 380U
320U 2800U 380U 340U 380U 2600U 2800U 380U
-
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s.o Ditch sediment Investigation
5.1 General
An investigation of ditch sediments was conducted in accordance
with the procedures outlined in Task 13 of the approved RI/FS Work
Plan (1). The ditches convey stormwater runoff from the highway,
railroad and Site, and are normally dry. There are no surface
water bodies on-site. The nearest perennial surface water body is
Aberdeen Creek located approximately 4,000-5,000 feet west of the
Site.
The ditch sediment investigation consisted of three phases to
delineate the horizontal and vertical extent of contamination. The
first step, Phase 2, included the collection of on-site surface
samples of ditch sediments to define the horizontal extent of
contamination. Phase 3 included the collection of samples at one
and two-foot depth intervals as well as samples downgradient of
Phase 2 samples containing significant concentrations of
pesticides. Phase 4 ditch sediment samples were collected at two,
five and ten foot depth intervals at locations exhibiting
significant concentrations of pesticides in the surface soils. All
samples were analyzed for the Site-specific parameters. All
sediment sample locations are shown in Figure 5-1. Some original
sample locations were removed during the March-April 1991 Removal
Action. Only existing sample location results are discussed in
this section. Pre-removal conditions are presented in Appendix 4.
5.2 Ditch Sediment Description
Sediments, as described in this section, refer to materials that
have settled out of stormwater occurring from the ground level to
a maximum depth of one-foot. Sediments at the Site are composed of
primarily tan to brown silty sands to sandy silts. The total silt
content in the sediments ranges from <1 to 53 percent. Sands are
generally well sorted and are usually medium-to fine or coarse-to
fine-grained. Natural organic material is present in the upper 0 '-
0. 25 feet of the sediments. Also, rock fragments are not unusual
in the sediments.
5.3 Ditch Sediment Sampling
5.3.1 Phase 2 Ditch Sediment Samples
Twelve on-site ditch sediment samples and nine off-Site ditch
sediment samples were collected for analysis. Samples SD-9, SD-10,
SD-11, SD-12 SD-14, SD-15, SD-16 and SD-17 were removed during the
March-April 1991 Removal Action. Pre-removal conditions are
presented in Appendix 4. Existing sample locations are shown on
Figure 5-1. The samples were analyzed in accordance with the CLP
procedures for pesticides, copper, lead and zinc.
The ditch sediment samples, with the exception of OSD-28/29, were
collected from the ground surface to a maximum depth of one-foot.
5-1
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WOODS
OSD-43
"
WOODS
" ---
SD-1
Sll-3
/ -~ HIJ-JS s
-
-
IIOOY..,.
I
'
I
' l
/
STA1E HIQiWAY 711
------------------=--ir,.,~s = -. ._,
(
\
'
ABERcm, ANO ROCKFlSH RAllJ!OAo
ESTIWA TED PR0PER,-y llHE
,c; rt "filrr-''°S,~ l {~ PAI) o.t.Y) SD-6 L SD-22 SD-8 ow.
MV--6S$
M'J-6'$-
Pl.-\ ~ ,...,
~
<tt>-e,
FOUHtlATia.l
WOODS
LEGEND
H\/~--(,0
DSD-23 "
SHALL□IJ MONITOR 'JELL CUPPERHCST AQUIFER)
Sil-4
INTER HE DIA TE MONITOR \r'ELL (SECOND UPPERMOST AQUIFER)
lJEEP MCNITOR \IELL ~7HlRD UPPERMOST AQUIFUV
ON-SHE SEDIMENT SAMPLING LOCATION
0 orr-srrt saJIMENT SAMPLING LDCATtON
l!!ISD-7
OSil-i?4
" O.StH!:5
"
OSD-ZS
"
FIGURE 5-1.
I
Csl SD-13
OSD-27
"
' ~ ap SCALE Ill nrr
DITCH SEDIMENT SAMPLE LOCATIONS
GEIGY CHEMICAL CORPORATION SITE
ABERDEEN, NORTH CAROIJNA
lJllij ERM-SOUTHEAST, INC
5-2
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Sample OSD-28 was collected from the surface to a depth of 1.5-feet
and sample OSD-29 was collected from the same location at a depth
of 1.5 to 3 feet. The increased depth sampling was due to the
presence of sediments deposited at these locations. Sample
collection, analysis, and decontamination procedures were in
accordance with the procedures outlined in the RI/FS Work Plan and
Project Operations Plan.
The analytical results are summarized in Tables 5-1 and 5-2 and are
illustrated on Figure 5-2. Pesticides were detected in all samples
both on-site and off-site. The BHC isomers, total DDT and
toxaphene were the most prevalent pesticides detected in on-site
ditch sediments. Total DDT and toxaphene were also detected in
off-site ditch sediments.
Total BHC concentrations were less than 1 mg/kg in all ditch
sediment samples. Concentrations of total DDT ranged from 0. 1
mg/kg (SD-4) to 77 mg/kg in OSD-27. Toxaphene ranged from not
detected in six of the samples to 40 mg/kg in SD-6. Copper, lead
and zinc concentrations were within the ranges indicated across the
Site. Copper ranged from not detected to 19. 4 mg/kg in SD-19.
Lead ranged from not detected to 90.2 mg/kg in 0SD-21. Zinc
concentrations ranged from not detected to 68.3 mg/kg at 0SD-26.
5.3.2 Phase 3 Ditch Sediment Samples
In accordance with the RI/FS Work Plan, additional sediment depth
samples were collected from sample locations identified.in Phase 2
as containing concentrations of total BHC, total DDT and Toxaphene
at concentrations greater than 10 mg/kg. In Phase 3, ditch
sediments were collected from those locations at depths of one and
two feet below the surface to assess the vertical extent of
contamination. In addition, samples were collected 50 feet
downgradient of affected areas. Samples were collected in
accordance with procedures outlined in the RI/FS Work Plan.
Samples SD-9-1.5, SD-15-1.5, SD-15-2.5, SD-16-1,5, SD-16-2.5, SD-
17, 1. 5 and SD-17-2. 5 were removed during the March-April 1991
removal action. Pre-removal conditions are presented in Appendix
4.
The existing Phase 3 sediment analytical results are presented in
Table 5-3. Isomers of BHC, total DDT and toxaphene were the most
prevalent pesticides detected. Of the 33 samples collected, nine
samples had total pesticide concentrations greater than 10 mg/kg.
The samples and the detected concentrations are listed on Table 5-
4. Total pesticide concentrations ranged from approximately 12.7
mg/kg in SD-1-1.5 to approximately 144 mg/kg in SD-9-2.5 (Sample
location SD-9-1.5 was removed during the March-April 1991 removal.
Reference Figure 5-1, Figure 4-6, and Appendix 4 for location of
SD-9).
Copper, lead and zinc concentrations were within the ranges found
in background soils. Copper ranged from 1.1 mg/kg in OSD-42-05 to
17.5 mg/kg in SD-21-1.5. Lead ranged from 1.6 mg/kg in 0SD-27-2.5
5-3
-- -- --
SAMPLE ID: S0-1-01 S0-2~1
LAB NUMBER: ER-145 ER-146
SAMPLE DATE: 7126/90 7/26/00
COMMENTS:
-- -- - -
SD-3-01
ER-147
7/26/90
TABLES-1
PHASE 2 SEDIMENT SAMPLES-SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS •
SD-4-01 SCHH>1 SD-7-01 SD-8-01 SD-13--01
EA-146 EA-149 ER-150 ER-161 EA-158
7/26/90 7/26/90 7/26/90 7/26/90 7/27/00
ALPH. ~,:/' ~:: ~%--I••• I III •• 150U
BETA-BHC UG/KG 110J
DELTA-BHC UG/KG 150U
GAMMA-BHC UG/KG 150U
HEPTACHLOR UG/KG 150U
ALDRIN UG/KG 150U
HEPTACHLOR EPOXIDE UG/KG 150U
ENDOSULFAN I UG/KG 150U
DIELDRIN UG/KG 300U
4,4'-0DE UG/KG 1000
ENDRIN UG/KG 300U
ENDOSULFAN II UG/KG 300U
4,4'-0DD UG/KG 2800
ENDOSULFAN SULFATE UG/KG 300U
4,4'-0DT UG/KG 3000J
METHOXYCHLOR UG/KG 1500U
ENDRIN KETONE UG/KG 300U
ALPHA-CHLORDANE UG/KG 1500U
GAMMA-CHLORDANE UG/KG 1500U
TOXAPHENE UG/KG 28000
COPPER MG/KG 7.0
LEAD MG/KG 11.6J
ZINC MG/KG 11.7J
NOTES: DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
C • CONFIRMED BY GC/MS.
81U
81U
81U
81U
81U
81U
81U
a,u
180U
420J
180U
180U
1200J
180U
1800J
810U
180U
810U
810U
11000
2.4U
1.4J
12.1J
B • DETECTED IN THE BLANK AT A SIMILAR CONCENTRATION.
J • QUANTITATIVE ESTIMATE.
380U 8.1U
380U 8.1U
380U B.1U
380U 8.1U
380U 8.1U
380U 8,1U
380U 8.1U
380U 8.1U
780U 18U
780J 83J
780U 18U
780U 18U
2300 14J
780U 18U
4300 54J
3800U 81U
780U 18U
3800U 81U
3800U 81U
14000 170U
3.9 2.4U
10.7 10.7
12.8 14.5
• SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991.
870U 8.0U 34J 79U
870U 4.4J 300J 94J
870U 8.0U 24J 79U
870U 8.0U 52J 79U
870U 8.0U 87U 79U
870U 8.0U 87U 79U
870U a.au 87U 79U
870U 8.0U 87U 79U
1700U 18U 170U 180U
970J 79 220J 1100J
1700U 18U 170U 180U
1700U 18U 170U 180U
4500J 53 1100J 1400J
1700U 18U 170U 180U
4600J 84 1400J 2400J
8700U sou 870U 700U
1700U 18U 170U 180U
8700U sou 870U 700U
8700U sou 870U 700U
40000J 540 14000J 18000J
5.8 5,8 12.0 8.3
11.4 16.3 12.B 15.4
18.3 17.8 33.3 11.2
--- - -
SD-18-01 SD-1!>--01 SD-20-01 S0-21-01 S0-22-01
ER-161 ER-182 EA-183 EA-184 ER-186
7/28/90 7/28/90 7/28/90 7/27/00 7/27/00
BSOF
SD-08--01
79U 4&I 83U 420U 430U
79U 130J 43J 420U 260J
79U 81U 83U 420U 430U
79U 81U 83U 420U 430U
79U 81U 83U 420U 430U
79U 81U 83U 420U 430U
79U 81U 83U 420U 430U
79U 81U 83U 420U 430U
180U 180U 170U 830U 500J
410 3200J 2400J 570J 1300J
180U 1eou 170U 830U eeou
180U 180U 170U 830U aeou
290 1500J IISOJ 1800 5700J
180U 180U 170U 830U eeou
440 2700J 2400J 2300 8200J
790U 810U 830U 4200U 4300U
180U 180U 170U 830U aeou
790U 810U 830U 4200U 4300U
790U 810U 830U 4200U 4300U
2200 11000 9700 13000 43000J
8.4 19.4 13.3 15.1 8.0
18.3 82.1 54.5 81.7 10.4
15.9 21.9 19.1 158 12.4
SAMPLE ID. NUMBER (SD-1-01) DESIGNATES SAMPLE MEDIA(SD • ON-SITE SEDIMENT, OSO • OFF-SITE SEDIMENT), SAMPLE LOCATION NUMBER (1), AND SAMPLE DEPTH (01 • 0-1 FT.).
TBL 5-1 (9110191)
-
-
V,
I
V,
-- --- - -- - --
TABLES--2
OFF-SITE SEDIMENT SAMPLES-SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS•
SAMPLE ID: OSD-21-01 OSD-22-01
LAB NUMBER: ER-172 ER-173
SAMPLE DATE: 8/22/90 8/22/90
COMMENTS: BACKGROUND
-lt••••.IIIII ····· II ·•·· ::
ALPHA-BHC UG/KG 9.2U 810U
BETA-BHC UG/KG 8.2U 810U
DELTA-BHC UG/KG 8.2U 910U
GAMMA-'IIHC UG/KG 9.2U 810U
HEPTACHLOR UG/KG 8.2U 910U
ALDRIN UG/KG 9.2U 910U
HEPTACHLOR EPOXIDE UG/KG 8.2U 810U
ENDOSULFAN I UG/KG 9.2U 910U
DIELDRIN UG/KG 18U 1800U
4,4'-DDE UG/KG 11J 1500J
ENDRIN UG/KG 18U 1800U
ENDOSULFAN II UG/KG 18U 1800U
4,4'-DDD UG/KG 9.2J 1800
ENDOSULFAN SULFATE UG/KG 18U 1BOOU
4,4'-DDT UGIKG 33 4400
METHOXYCHLOR UG/KG 82U 9100U
ENDRIN KETONE UG/KG 18U 1800U
ALPHA-CHLORDANE UG/KG 82U 9100U
GAMMA-CHLORDANE UG/KG 82U 9100U
TOXAPHENE UG/KG 1BOU 18000U
COPPER MG/KG 5.6 2.7U
LEAD MG/KG 80.2 10.3
ZINC MG/KG 28.4 5.2B
NOTES: DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE METHOD LIMIT INDICATED.
B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
J • QUANTITATIVE ESTIMATE.
BS• BLIND SPLIT.
OSD • OFF-SITE SEDIMENT.
OSD-23--01 OSD-24--01
EA-174 EA-175
8/22/90 8/22/90
a.au aeoou
B.9U seoou
a.au seoou
a.au 8900U
8.9U 8900U
a.au 8900U
a.au 8900U
a.au 8900U
1aU 1SOOOU
29 8800J
18U 18000U
19U 19000U
13J 21000
18U 18000U
73 44000
seu aeooou
18U 18000U
seu seooou
seu seooou
200 180000U
2.6U 3.0
10.0 18.2
4.9B 6.8
• SITE CONDITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1881.
OSD-25--01 OSD-26--01
ER-176 ER-1TT
8/22/90 8/22/90
esou 8.7U
esou 8.7U
950U B.7U
950U a.7U
esou a.7U
950U 8.7U
esou a.7U
950U 8.7U
1900U 12J
800J 77
1900U 17U
1800U 17U
1400J 28
1800U 17U
3700 80
esoou 87U
1900U 17U
esoou 87U
esoou 87U
18000U 280
5.8 9.6
20.8 35.3
10.5 68.3
- - -
OSD-27-01 OSD-28 OSD-29
ER-178 ER-179 ER-180
8/22/90 8/22/90 8/22/90
0-1.5' OSD-28@
8300U 880U 870U
8300U 880U 870U
8300U 880U 970U
8300U 880U 870U
8300U 880U 870U
8300U BSOU 970U
8300U aBOU 970U
8300U 880U 970U
18000U 1aooU 1800U
19000U 880J 1700J
18000U 1800U 1800U
18000U 1800U 1900U
25000 2600 4800
18000U 1800U 1800U
52000 5300 13000
83000U ssoou 9700U
19000U 1BOOU 1800U
83000U 8800U 8700U
83000U 8800U 9700U
190000U 21000 38000
3.6 7.5 7.0
19.0 16.7 31,8
13.0 10.6 8.1
SAMPLE ID. NUMBER (SD-1--01) DESIGNATES SAMPLE MEDIA (SD• ON-SITE SEDIMENT, OSD • OFF-SITE SEDIMENT), SAMPLE LOCATION NUMBER (1),
AND SAMPLE DEPTH (01 • 0-1 FT.).
TBL 5-2 (9110191)
- --
OSD-30--01
ER-181
8/22/90
BSOF
870U
870U
a70U
870U
870U
870U
870U
a70U
1700U
3100
1700U
1700U
4700
1700U
10000
a700U
1700U
a700U
. 8700U
25000
4.5
13.3
10.3
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\ 1/ /I
// // // . // // // WOODS // -// /1/ -I /~ i;J 0SD-29 so-t ~ ~ (Y) /1 llOOY"""'
0OT-19 OOT=7.7 50-J TQX .. J6 TOX-28 /I so-a
1 OOT-7.4 I I SD-21 NO ' ~ TOX•14 fl ' 0S0-28 -;\I S0-6 l
(1.5') I I I DDT-4.5
'~--;-~-.("/ ~ T0X-13 NO . •
0DT-8.8 / \.· • .
rox-21
1
STATE KIQfWAY 211
D ~ . \ ' -' ( 0-L---·; I . ·---sn-ei.~ ---->-M',/-ID I ......... 4-9 •
□SD-28 L □SD-<!'J ,._
M\l-3S -~ , ' ~--fq ' --{ '-.;,. '\ •)l!V-IS -;t?-\ --~ ~D~ -2S ~ \ r-, • r-, ,_,, ' -,., --~-1 CIFF!a n TANrc PAD\ ~d ' ' ' L_J \. -')' ST~1E HJGH'll~Y :Z,1 ' SD-J ~ WAREHa.,sc A ,'\~ -PZ-l I (CCW~ PAD ""'1.1') ' ' '""""""'1l' . . . ASfRDEDI AND R00cFJSH RAllROAo SD--6 I. SD-22 \ :ro-e · -. ;.,,_ ,~, OSD-:>1 -----\ (,,...-----~ -ESTIIU.TED PRCPEJny lDo'r HV~,-D . .,,,,
" --, ... , SD-18 -----~' ----"s:' ""SD-4 • ; SD-13 • SIH8 _ DDT•1.1
I HV-5S ,,,..,_40 --=--... TOX-2.2 . '\'-~ r 0SD-21 .~ '-"', SD-7 ,,, [;El """~ D0T=0.05 ,, oor-0.2 aso-oso--22 I
D ,' FQJMOA Tlc»I ~ TOX~0.5 (i OOT~7.8 D " OS>-23 OSD-25 OSD-27 , ..... i _,, I·" DSD-2!, 0DT•77 T0X=-11 .......... -·~ '' 0S0-23 .......... D0T=-71.6 .......... oor-0.1 ..... , , ..... T0X=0.2 0S0-26 50-20 .......... ..... , WOODS DDT=0.2 ..... ' OSD-2~ rox-9.7 WOODS ,, T0X•0.3 ,, 00Ts6.0 J _:-,
i 9 '!' op
KEY LEGEND ~Dinn
I
--MV--i.Ss . RESULTS !N mg/kg SHALLO\J' H□N1TDR 'JELL <UPPERMOST AQUIFOO
NO • NOT DETECTED AT TH£ DETECTION LIMIT ""➔'-$-tNTERM£DlA T£ MONITOR 'JELL <SECOND UPPERl'CIST AQUIFER) nGURB 6-2. PHASB 2 DITCH SBDIKBNT SAMPLB
DOT ,,. TOTAL DOT PZ-1 . BBSULTS, JULY 111110
~ DEEP MONITOR VEU. <THIRD UPPERMOST AQIJIFCR) GEIGY CHBIOCAL CORPORATION SlTI
I
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TOX -TOXAPHENE , ..... ABDDDN, NORTH CAJIOUNA l!il ON-SITE SEDtMENT SAKPUNU LOCATION
OS>-23 !
l!il OFT-SITE SEDDEfl SAHPUNG LOCATION 1:tfil] ERM-SOUTHEAST, INC I
I 5-6
- --- ---------..
TABLE6-3
PHASE 3 SEDIMENT SAMPLES-SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS•
SAMPLE ID: SO-1-1.5 SD-1-2.5 SO-2-1.5 SD-2-2.5 SD-3-1.5 SO-3-2.5 SD-6-1.5 SD-8-1.5 $0-8-2.5 SD-9-2.5 SD-10-1.5 SD-10-2.5
LAB NUMBER: 394309 394297 394295 394298 394293 394303 394106 394294 394299 394307 394095 394089
SAMPLE DATE: 1/18/91 1/18/91 1/18/91 1/18/91 1/18/91 1/18/91 1/18/91 1/18/91 1/18/91 1/18/91 1/18/91 1/18/91
COMMENTS:
ALPHA-BHC
BETA-BHC
DELTA-BHC
GAMMA-BHC
HEPTACHLOR
ALDRIN
HEPTACHLOR EPOXIDE
ENDOSULFANI
DIELDRIN
v, 4,4'-0DE ~ ENDRIN
ENDOSULFAN II
4,4'-OOD
ENDOSULFAN SULFATE
4,4'-DDT
METHOXYCHLOR
ENDRIN KETONE
ALPHA-CHLORDANE
GAMMA-CHLORDANE
TOXAPHENE
COPPER
LEAD
ZINC
UG/KG
UG/KG
UG/KG
UG/KG
UG/KG
UG/KG
UG/KG
UG/KG
UG/KG
UG/KG
UGJKG
UG/KG
UG/KG
UG/KG
UG/KG
UG/KG
UG/KG
UG/KG
UG/KG
UG/KG
MG/KG
MG/KG
MG/KG
NOTES: DATA HAS BEEN VALIDATED.
48U
48U
48U
48U
48U
48U
48U
48U
96U
340
96U
96U
410
96U
3700C
480U
96U
480U
480U
8000C
5.2
9.6
11.38
44U
44U
44U
44U
44U
44U
44U
44U
89U
100
89U
88U
89U
89U
1400C
440U
89U
440U
440U
1500U
5.3
10.7
28.2
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
J • QUANTITATIVE ESTIMATE.
B • DETECTED IN THE BLANK AT A SIMILAR CONCENTRATION.
C • CONFIRMED BY GC/MS
1111 9.0U 9.SU
9.0U
9.0U
9.0U
9.0U
9.0U
9.0U
9.0U
18U
18U
18U
18U
18U
18U
18U
90U
18U
90U
90U
1B0U
7.1
7.3
11.38
9.SU
9.SU
9.SU
9.SU
9.5U
9.SU
9.SU
19U
19U
19U
19U
19U
19U
19U
95U
19U
95U
95U
190U
5.70
5.0
9.78
• SITE CONDITIONS AFTER REMOVAL CONDUCTED DURING MARCH -APRIL 1991
13U
15
13U
13U
13U
13U
13U
13U
26U
26U
26U
26U
26U
26U
61
130U
26U
130U
130U
540
6.7
6.8
13.78
9.SU
9.5U
9.SU
9.SU
9.SU
9.SU
9.5U
9.SU
19U
34
19U
19U
19U
19U
130
95U
19U
95U
95U
920
7.6
5.3
18.3
580C 45U 21 460U 9.2U 8.9U
510U 45U 9,4U 460U 9.2U 8.9U
510 45U 9.4U 460U 9.2U 8.9U
510U 45U 9.4U 470C 9.2U 8.9U
510U 45U 9.4U 460U 9.2U 8.9U
510U 45U 9.4U 460U 9.2U 8.9U
510U 45U 9.4U 480U 9.2U 8.0U
1000U 91U 19U 920U 18U 18U
1000U 91U 19U 920U ,au 18U
1000U 91U 19U 920U 18U 18U
1000U 91U 19U 920U 18U 18U
1000U 91U 19U 920U 18U 18U
1000U 91U 19U 920U 18U 18U
4200C 190 68 14000C 18U 18U
5100U 450U 94U 4800U 92U 89U
1000U 91U 19U 920U 18U 18U
5100U 450U 94U 4600U 92U 89U
5100U 450U 94U 4600U 92U 89U
58000C 2800 1200 130000C 4600 1300
17.2 8.1 11.3 9.7 7.2 8.3
29.5 5.9 7.5 9.7 6.2 3.2
85.8 15.58 20.1 83.8 10.7J 41.5.J
SAMPLE ID. NUMBER (SD•1-01) DESIGNATES SAMPLE MEDIA (SD • ON-SITE SEDIMENT, OSD • OFF-SITE SEDIMENT], SAMPLE LOCATION NUMBER (1),
AND SAMPLE DEPTH (01 • 0-1 FT.).
TBL 6-3 (9/10/91)
----------
TABLE 5-3 (cont.)
PHASE 3 SEDIMENT SAMPLES-SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS•
SAMPLE ID: SD-11-1.5 SD-11-2.5 SD-12-1.5 SD-12-2.5 SD-13-1.5 SD-13-2.5 SD-19-1.5 S0-19-2.5 SD-21-1.5 SD-21-2.5 SD-41-0.5
LAB NUMBER: 394093 394098 394096 394097 394099 394105 394102 394083 394305 394296 392028
SAMPLE DATE: 1/18/91 1/18/91 1/18/91 1/18/91 1/18/91 1/18/91 1/17/91 1/17/91 1/17/91 1/17/91 1n/91
COMMENTS:
47U
BETA-BHC UG/KG 730C 47U 44U au 8.9U 9.1U 200U 48U
DELTA-BHC UG/KG 150 47U 440U 44U 9U 8.9U 9.1U 9.6U 200U 46U 8.8U
GAMMA-BHC UG/KG 88U 47U 440U 44U au a.eu 9.1U 9.6U 200U 48U a.au
HEPTACHLOR UG/KG 88U 47U 440U 44U 9U 8.9U 9.1U e.eu 200U 46U 8.8U
ALDRIN UG/KG 88U 47U 440U 44U au 8.9U 9.1U 9.6U 200U 46U a.au
HEPTACHLOR EPOXIDE UG/KG 88U 47U 440U 44U 9U 8.0U 9.1U 9.8U 200U 46U 8.8U
ENDOSULFAN I UG/KG 88U 47U 440U 44U 9U 8.9U 9.1U 9.6U 200U 48U a.au
DIELDRIN UG/KG 1800C 180 870U 89U 18U 18U 18U 19U 400U 93U 18U
V, 4.4'-DDE UG/KG 270 95U 870U 89U 18U 18U 40 19U 400U 93U 170
I ENDRIN UG/KG 180U 85U 870U 88U 18U 18U 18U 18U 400U 93U 18U (X)
ENDOSULFAN II UG/KG 1SOU 85U 870U 89U 18U 18U 18U 19U 400U 93U 18U
4.4'-DDD UG/KG 870C 85U 1100C 250 18U 18U 18U 18U 400U 93U 18U
ENDOSULFAN SULFATE UG/KG 180U 85U 870U 89U 18U 18U 18U 18U 400U 93U 18U
4.4'-DDT UG/KG 4400C 370 1000C 89U 18U 18U 23 19U 4000C 470 180
METHOXYCHLOR UG/KG 880U 470U 4400U 440U 90U 89U 91U 96U 2000U 480U 88U
ENDRIN KETONE UG/KG 1BOU 95U 1800U 89U 18U 18U 18U 19U 400U 93U 18U
ALPHA-CHLORDANE UG/KG 880U .t70U 4400U 440U 90U 89U 81U 96U 2000U 480U 88U
GAMMA-CHLORDANE UG/KG 880U 470U 4400U 440U 90U 89U 91U 96U 2000U 480U 88U
TOXAPHENE UG/KG 88000C 15000C 89000C 15000C 180 1BOU 180U 190U 28000C 4000 2300
COPPER MG/KG 5.4 11.4 12.1 9.0 11.4 10.5 8.4 5.4 17.5 10.8 3.7
LEAD MG/KG 11.1 8.3 22.2 8.5 5.2 3.5 8.5 3.8 202 27.8 8.2J
ZINC MG/KG 18.5J 18.0J 20.5J 12.4J 9.2J 8.7J 11.7J 3.2 289 55.1 5.3
NOTES: DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
J • QUANTITATIVE ESTIMATE.
B • DETECTED IN THE BLANK AT A SIMILAR CONCENTRATION.
C • CONFIRMED BY GC/MS
• SITE CONDITIONS AFTER REMOVAL CONDUCTED DURING MARCH -APRIL 1991
SAMPLE ID. NUMBER (SD•1-01) DESIGNATES SAMPLE MEDIA (SD• ON-SITE SEDIMENT, OSD • OFF-SITE SEDIMENn, SAMPLE LOCATION NUMBER(1),
AND SAMPLE DEPTH (01 • 0-1 FT.).
TBL 5-3 (9/10/91)
-
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---
SAMPLE ID:
LAB NUMBER:
SAMPLE DATE:
COMMENTS:
--- -- --
TABLE 5-3 (cont.)
PHASE 3 SEDIMENT SAMPLES -SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS •
OSD-24-1.5 OSD-24-2.5 OSD-27-1.5 OSD-27-2.5 OS0-28-4.0 OS0-28-5.0 OSD-30-1.5
394092 394091 394084 394103 394300 394308 394094
1/18/91 1/18191 1/18/91 1118/91 1/18/91 1/18/91 1/18/91
-IB! -
OSD-30-2.5 OSD-42-0.5 OSD-43-0.5 OSD-44-1.5 OSD-45-3.0
394090 392018 392024 394101 394306
1/18/91 117/91 117/91 1n/91 117/91
BS of BS of ,~ &1,n: _. .1rnii ______
1 :.■ .•., ..
1:1 i·•··) RBI ·•·· .. :'' ::
ALPHA-BHC UG/KG 43U a.au 42U 42U 9.3U 12 9.0U 9.2U 8.0U
BETA-BHC UG/KG 43U 8.BU 42U 42U 9.3U 26 9.0U 9.2U e.eu
DELTA-BHC UG/KG 43U a.au 42U 42U 9.3U 9.2U 9.0U 9.2U 8.8U
GAMMA-BHC UG/KG 43U a.au 42U 42U 9.3U 9.2U 8.0U 9.2U s.eu
HEPTACHLOR UG/KG 43U a.au 42U 42U 9.3U 9.2U 9.0U 9.2U 8.6U
ALDRIN UG/KG 43U a.au 42U 42U 9.3U 9.2U 9.0U 9.2U 8.0U
HEPTACHLOR EPOXIDE UG/KG 43U a.au 42U 42U 8.3U 8.2U 9.0U 9.2U 8,6U
ENDOSULFAN I UG/KG 43U a.au 42U 42U 9.3U 9.2U 9.0U 8.2U s.eu
DIELDRIN UG/KG sou 18U 320 110 18U tBU 18U 18U 17U
4,4'-DDE UG/KG BOU 18U 100 85U 18U 50 45 18U 150
ENDRIN UG/KG 86U 18U 140J 85U 18U 18U 18U 18U 17U
ENDOSULFAN II UG/KG sou 18U 84U 85U 1BU 18U 18U 18U 17U
4,4'-DDD UG/KG 86U 18U 230J 85U 41 97 18U 18U 17U
ENDOSULFAN SULFATE UG/KG sou 18U 84U 85U 1BU 18U 18U 18U 17U
4,4'-DDT UG/KG 460C 18U 3700C 1100C 180 seoc 140 1BU 580C
METHOXYCHLOR UG/KG 430U
ENDRIN KETONE UG/KG 86U
ALPHA-CHLORDANE UG/KG 430U
GAMMA-CHLORDANE UG/KG 430U
TOXAPHENE UG/KG 2700
COPPER MG/KG 4.6
LEAD MG/KG 2.3
ZINC MG/KG 8.4J
NOTES: DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
J • QUANTITATIVE ESTIMATE.
aau
18U
aau
aau
790
5.7
3.8
12.2J
B • DETECTED IN THE BLANK AT A SIMILAR CONCENTRATION.
C • CONFIRMED BY GC/MS
420U
84U
420U
420U
25000C
1.6
1.8
8.0J
• SITE CONDITIONS AFTER REMOVAL CONDUCTED DURING MARCH -APRIL 1991
420U 83U 92U 90U 92U
85U 18U 18U 18U 18U
420U 83U 92U 90U 92U
420U 83U 92U 90U 92U
6200C 920 4200 1100 1200
1.6 3.8 2.9 8.0 7.5
1.6 17.9 12.5 3.8 3.3
3.BJ 14.78 14.28 9.0J 5.SJ
SAMPLE ID. NUMBER (S0•1-01) DESIGNATES SAMPLE MEDIA (SD• ON-SITE SEDIMENT, OSD • OFF-SITE SEDIMENT), SAMPLE LOCATION NUMBER (1),
AND SAMPLE DEPTH (01 • 0-1 FT.).
TB L 5-3 (9/1 0/91)
86U
17U
86U
86U
1300
1.1
6.SJ
3.28
88U B7U 11U
540JC 30-0C 26
aau 87U 11U
BBU 87U 11U
BBU 110 11U
BBU 87U 11U
BBU 87U 11U
aau 87U 11U
180U 260 22U
390J 280 22U
180U 170U 22U
180U 170U 22U
180U 17DU 110
1SOU 170U 22U
7200JC 2000C 480
880U 870U 110U
180U 170U 22U
880U B70U 110U
saou 870U 110U
44000JC 20000C 2300
6.6 3.3 7.6
14.1J 27 17.6
26.5 16.0J 15.88
en
I .....
0
TABLES-4
PHASE 3 SEDIMENT SAMPLES
TOTAL PESTICIDE CONCENTRATIONS GREATER THAN 10 MG/KG
SAMPLE ID: SD-1-1.5 SD-6-1.5 SD-9-2.5 SD-11-1.5 SD-11-2.5 S0-12-1.5 SD-12-2.5 OSD-27-1.5 OSD-43-0.5
SAMPLE DATE: 1/18/91 1/18/91 1/18/91 1/18/91 jf 1/18/91 1118/91
2
1/18/91 1/~
ALPHA-BHC o.osu o.sc
BETA-BHC o.osu 0.6C
OELTA-BHC o.osu 0.SU
GAMMA-BHC o.osu 0.5
OIELORIN 0.1U 1U
ODE 0.3 1U
ODO 0.4 1U
DDT 4C 4C
TOXAPHENE BC sac
HEPTACHLOR o.osu o.su
NOTES:
RESULTS IN MG/KG
U • NOT DETECTED AT THE DETECTION LIMIT.
C • CONFIRMED BY GC/MS.
J • QUANTITATIVE ESTIMATE.
o.su
0.SU
o.su
o.su
0.9U
0.9U
0.9U
14C
130C
o.sc
0.3C o.osu 0.4U 0.04U 0.04U
0.7C o.osu 0.4U 0.04U 0.04U
0.2C o.osu 0.4U 0.04U 0.04U
0.1U o.osu 0.4U 0.04U 0.04U
2C 0.2 0.9U 0.09U 0.3
0.3 0.1U 0.9U 0.09U 0.1
1C 0.1U 1C 0.3 0.2
4C 0.4 1C 0.09U 4C
68C 15C 69C 15 25
0.1U o.osu 0.4U 0.04U 0.04U
SAMPLE ID. NUMBER (SD-1-01) DESIGNATES SAMPLE MEDIA (SO• ON-SITE SEDIMENT, OSD • OFF-SITE SEDIMENT),
SAMPLE LOCATION NUMBER (1), ANO SAMPLE DEPTH (01 • 0-1 FT.).
TBL 5-4 (9/10/91)
0.09U
0.54JC
0.09U
0.09U
0.2U
0.4JC
0.2U
7JC
44JC
0.09U
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to 202 mg/kg in SD-21-1.5. Zinc concentrations ranged from not
detected to 269 mg/kg in SD-21-1.5.
5.3.3 Phase 4 Ditch Sediment Samples
In order to assess whether contaminants had migrated vertically,
two, five and ten foot samples were collected from four· sample
locations SD-10, SD-11, SD-12 and SD-14, which exhibited surface
pesticide concentrations greater than 500 mg/kg prior to the March-
April 1991 removal (Reference Figure 4-6).
Soil borings were drilled with hollow stem augers in accordance
with the procedures outlined in the RI/FS Work Plan. Sample
collection was achieved with a large diameter (i.e., three-inch)
split spoon sampler to allow recovery of a sufficient sample volume
for laboratory analysis in accordance with CLP criteria.
Decontamination of the augers and sampling equipment was in
accordance with the Work Plan procedures.
The samples were analyzed for the Site-specific parameters and the
results are presented in Table 5-5. The total pesticide
concentrations were less than 10 mg/kg in each sample analyzed.
5-11
-
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N
----
TABLES-5
PHASE 4 SEDIMENT DEPTH SAMPLES-SITE SPECIFIC PARAMETERS
EXISTING SITE CONDITIONS•
SAMPLE ID: SD-10-2 SD-10-5
LAB NUMBER: 388841 386832
SAMPLE DATE: 12/6/90 12/6190
COMMENTS:
•• -....
)
UG/KG 9.2U 8.SU
BETA-BHC UG/KG 9,2U 8.8U
DELTA-BHC UG/KG 9.2U a.au
GAMMA-BHC UG/KG 9.2U 8.SU
HEPTACHLOR UG/KG 9.2U a.au
ALDRIN UG/KG 9.2U a.au
HEPTACHLOR EPOXIDE UG/KG 9.2U a.au
ENDOSULFAN I UG/KG 9.2U a.au
DIELDRIN UG/KG 18U 18U
4,4'-0DE UG/KG 18U 18U
ENDRIN UG/KG 18U 18U
ENDOSULFAN II UG/KG 18U 18U
4,4'-DDD UG/KG 18U 18U
ENDOSULFAN SULFATE UG/KG 18U 18U
4,4'-DDT UG/KG 35 18U
METHOXYCHLOR UG/KG 92U 88U
ENDRIN KETONE UG/KG 18U 18U
ALPHA-CHLORDANE UG/KG 92U 88U
GAMMA-CHLORDANE UG/KG 92U 88U
TOXAPHENE UG/KG 600 200
COPPER MG/KG 6.1 4.5
LEAD MG/KG 2.0J 3.9
ZINC MG/KG 17.2J 3.4B
NOTES: DATA HAS BEEN VALIDATED.
U • NOT DETECTED AT THE DETECTION LIMIT INDICATED.
B • DETECTED IN A BLANK AT A SIMILAR CONCENTRATION.
J • QUANTITATIVE ESTIMATE.
C • CONFIRMED BY GC/MS
•• • SAMPLE CONTAINER BROKE-NO DATA
SO-10-10 SD-11-2
386813 387690
12/6/00 12/11/90
\i ,.
9.1U 9.2U
9.1U 41
9.1U 9.2U
9.1U 9.2U
9.1U 9.2U
9.1U 9.2U
9.1U 9.2U
9.1U 9.2U
18U 100
18U 18U
18U 18U
18U 18U
18U 18U
18U 18U
18U 18U
91U 92U
18U 18U
91U 92U
91U 92U
180U 1900
3.0 8.5
2.8 5.9
8.7B 15.9
• SITE CO~DITIONS AFTER REMOVAL EFFORT CONDUCTED DURING MARCH -APRIL 1991
SD-11-5 SD-12-2
387686 38TT03
12/11/90 12/11/90
·•·· i ... •···•· .•.• .
9.0U 190J
9.0U 160J
9.0U 60J
9.0U 53J
9.0U 8.7U
9.0U 8.7U
9.0U 8.7U
9.0U 8.7U
32J 17U
1BU 17U
18U 17U
18U 17U
18U 17U
18U 17U
18U 17U
90U 87U
18U 17U
90U 87U
90U 87U
3200J 6900JC
20.9 ..
5.6 ..
8.28 ..
--
SD-12-5 SD-14-2 SD-14-5 SD-14-10
387889 388058 388057 388056
12/11/90 12/12/90 12/12/90 12/12/90
--0-
9.1U 9.3U 9.7U 9.0U
43 10 9.7U 9.0U
9.1U 9.3U 9.7U 9.0U
9.1U 9.3U 9.7U 9.0U
9.1U 9.3U 9.7U 9.0U
9.1U 9.3U 9.7U 9.0U
9.1U 15 16.J 9.0U
9.1U 9.3U 9.7U 9.0U
18U 65 19U 72J
18U 18U 19U 18U
18U 18U 19U 18U
18U 18U 19U 18U
18U 18U 19U 18U
18U 18U 19U 18U
18U 18U 19U 240J
91U 93U 97U 90U
18U 29 19U 18U
91U 93U 97U eou
91U 93U 97U eou
180U 5200C 8SOOJC 7900JC
5.7 7.5 5.9 8.6
4.3 2.4B 2.6B 2.6B
5.6B 7.4B 6.0B 4.10B
SAMPLE ID. NUMBER (SD-1-01) DESIGNATES SAMPLE MEDIA(SD • ON-SITE SEDIMENT, OSD • OFF-SITE SEDIMENl), SAMPLE LOCATION UMBER (1), AND SAMPLE DEPTH (01 • 0-1 FT.).
TBL 5-5 (9/10/91)
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6.0 NATURE AND EXTENT OF CONTAMINATION
6.1 Ground Water
6.1.1 Pesticides
Pesticides were detected in seven of the eighteen monitor wells at
the Site. Five of the monitor wells (MW-2S, MW-3S, MW-4S, MW-5S
and MW-6S) are shallow wells (uppermost aquifer) located within the
Site property boundaries. The other two monitor wells were located
off-site: MW-l0S, a shallow well, and MW-11D, a well screened in
the second uppermost aquifer. Pesticides were not detected in the
upgradient shallow well (MW-1S) or the five other off-site shallow
wells (MW-7S, MW-as, MW-9S, MW-12S or MW-13S). No pesticides were
detected in any of the on-site deeper wells, including the three
second-aquifer monitor wells (MW-1D, MW-4D and MW-6D), the third
aquifer monitor well (PZ-1) and the former water supply well (WSW-
1). The areal distribution of pesticides in ground water is
illustrated in Figures 3-11 and 3-13.
The BHC isomers (alpha-BHC, beta-BHC, delta-BHC, gamma-BHC) were
detected at all seven of the monitor wells where pesticides
occurred. Except for beta-BHC, the highest concentrations of BHC
isomers occurred at MW-6S (total BHC = 107 ug/1). MW-6S is located
west (and generally downgradient) of the former warehouse locations
where pesticide-affected soils had been detected and removed. The
other four shallow monitor wells where pesticides were detected are
generally located south (MW-4S, MW-5S and MW-l0S) or west (MW-2S
and MW-3S) of the former pesticide-affected soil areas. The lowest
detected levels of pesticides in the shallow ground water occurred
at MW-3S, located west-northwest of the former affected soil areas
and MW-6S. The Maximum Contaminant Level (MCL) for gamma-BHC (0.2
ug/1) was exceeded at MW-2S (3 ug/1), MW-3S (0.4 ug/1), MW-4S (0.5
ug/1), MW-5S (5 ug/1), MW-6S (30 ug/1), and MW-11D (11 ug/1).
Toxaphene was detected at MW-2S (10 ug/1) and MW-4S (5 ug/1) at
levels exceeding the primary drinking water standard for toxaphene
(3 ug/1).
The apparent lateral extent of pesticide contamination in the
uppermost aquifer is indicated by the lack of detectable pesticide
levels in the shallow monitor wells to the north (MW-7S, MW-BS, and
MW-9S), to the west (MW-13S), and to the southwest (MW-12S) of the
Site. No pesticides were detected at the USGS observation well
(GS-02-3) located within 130 feet east of Aberdeen Municipal supply
well Number 4.
Detectable levels of pesticides occurred in shallow well MW-l0S
located approximately 120 feet south of the Site. No pesticides
were detected in shallow well MW-12S, which is approximately 480
feet west of MW-l0S.
6-1
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Pesticides were detected off-Site in the second uppermost aquifer
at MW-11D located approximately 375 feet south of the Site.
However, pesticides were not detected in any on-site well screened
in second or third uppermost aquifer.
The aquitard which separates the uppermost and second uppermost
aquifers at the Site is present at MW-11D. The aquitard thickn'ess
decreases from ten feet thick beneath the Site to one foot thick at
MW-11D. Previous investigations conducted by EPA of private wells
in the area indicated the presence of pesticides in a domestic well
(Booth well) located upgradient of MW-11D.
Pesticides were not detected in the third uppermost aquifer.
6.1.2 TCL Volatiles
Trichloroethene (TCE) was detected in the second uppermost aquifer
in two of the on-site monitor wells (MW-4D and MW-6D). TCE was
also detected (southeast) upgradient of the Site in two off-site
private domestic wells; the PMP well and the Allred well (Figure 1-
3). The highest TCE concentration occurred in the PMP well (360
ug / 1) . It should also be noted that the TCE concentrations
reported for the private wells may be higher than reported due to
potential volatization during sampling (Reference Section 3.6.1.2
for private well sampling procedures).
Monitoring well PZ-1 was sampled twice during the RI. TCE was not
detected the first time and was below the quantitation limit (SJ)
in the second sampling event.
TCE was not detected in any of the ground water samples collected
from the monitor wells screened in the upper-most aquifer. In
addition, TCE was not detected in any surface or subsurface soils
collected from the site. Further characterization of the second
uppermost aquifer will be conducted during the pre-design
activities associated with the uppermost aquifer.
6.1.3 TCL Semi-Volatiles
Semi-volatile compounds were detected in three shallow monitor
wells but at concentrations below the method detection limit of 10
ug/1. The occurrence of these compounds at a few monitor wells at
levels below the method detection limits did not warrant inclusion
of semi-volatiles in the Phase 4, Step 2 ground water sampling. No
further action is warranted concerning semi-volatile constituents.
6.1.4 TAL Metals
Arsenic, barium, cadmium, chromium, lead, mercury, nickel,
selenium, silver and zinc were either not detected or were below
the Federal Drinking Water Criteria. The secondary drinking water
standard for iron (300 ug/1) was exceeded in six wells including
both upgradient wells (MW-lS and MW-1D). Copper was detected in
6-2
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the on-site water supply well at a concentration of 1180 ug/1 which
is slightly above the secondary MCL of 1000 ug/1.
Continued monitoring of TAL metals was determined to be unwarranted
and no metals analyses were conducted in the Phase 4, Step 2 ground
water sampling event.
6.1.5 Field Parameters
The specific conductance in the shallow aquifer at upgradient
monitor well MW-lS was 50 umhos/cm. The other shallow monitor
wells indicated similar or slightly elevated specific conductance
levels (14 to 84 umhos/cm) except at MW-2S (1,080 umhos/cm), MW-3S
(600 umhos/cm), and MW-6S (1,740 umhos/cm). The elevated specific
conductance values are in the vicinity of the former concrete tank
pad area.
The specific conductance levels in the second aquifer at MW-40 and
MW-6D were (with the exception of MW-4D at 40 umhos/cm being higher
than MW-1D at 20 umhos/cm) below the upgradient levels measured at
MW-1D, MW-140 and MW-15D.
The pH values were variable across the Site in both the shallow
aquifer and second aquifer. Relative to the pH value of 5.8 in the
upgradient shallow monitor well MW-lS, the pH values were generally
lower in the other shallow monitor wells except at MW-lOS (6.9 std.
units). The lowest pH values were measured near the former
concrete tank pad area at MW-6S (3.8 std. units) and MW-2S (4.0
std. units).
6.2 Soils
Volatile and semi-volatile constituents (including TCE) were not
detected in concentrations above the detection limit in any soil
samples, including samples collected at the five and ten-foot depth
intervals.
Pesticide concentrations in on-site soils are generally less than
100 mg/kg. The exceptions are at SS-06 (450 mg/kg), SS-63 (150
mg/kg), SS-110 (190 mg/kg), SS-58-20S (290 mg/kg), and SS-73-5 (300
mg/kg). All samples with the exception of SS-06 and SS-73-5
indicated the pesticide concentrations in subsurface soils were not
present or were below 10 mg/kg total pesticides. The 10 mg/kg
reference· is included to indicate relative concentrations of
pesticides on-site. They are not meant as an indication of cleanup
goals. Through the extensive grid sampling of surface soils and
the depth sampling of subsurface soils, the extent of pesticide
contamination in soils has been defined.
Concentrations of copper and zinc in soils were within the ranges
indicated in the background soils. Lead concentrations were
elevated in surface soils located adjacent to Highway 211. Depth
sampling at SS-82 indicated that the lead concentrations in the
surface soils are not migrating vert,ically. Considering the
6-3
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detection of lead in surface soils along the highway only, it is
apparent that the lead concentrations in surface soils are related
to traffic along Highway 211.
6.3 Ditch Sediment Samples
Ditches located on-site convey stormwater runoff from Highway 211,
from the railroad and from the site to off-site locations. After
the stormwater leaves the Site, it dissipates as it infiltrates.
Sediments are carried along with the stormwater and settle out as
they are transported.
Total BHC, total DDT and toxaphene were detected in the ditch
sediments. BHC concentrations were detected at less than 1 mg/kg
in ditch sediments. The highest concentration of total DDT was
detected at 77 mg/kg in OSD-27. Toxaphene was detected in the
highest concentration at SD-9-2.5 (130 mg/kg).
Concentrations of total pesticides in off-site sediments exceeded
10 mg/kg in six samples (OSD-21, OSD-24, OSD-27, OSD-28, OSD-29/30
and OSD-43). The concentrations were less than 100 mg/kg total
pesticides in the off-site soils.
The extent of contamination of ditch sediments appears to· be
limited horizontally to areas immediately downgradient of the Site.
Vertical migration of constituents is generally limited to the
upper two to three feet of sediments in the ditches, with the
exception of SD-14 (quantitative estimate at 10 feet).
6.4 Air
Airborne particulates were investigated in February, 1989 prior to
the initial soil removal. Airborne pesticide particulates were
found to be below action levels prior to removal of the
concentrated surface deposits. The action levels were based on the
Threshold Limit Value -Time Weighted Average (TLV/TWA) for gamma-
BHC of O. 5 mg/m3 • There is no TLV /TWA for alpha-BHC ( 22) . · A
description of the sampling and analysis of airborne particulates
at the Site is provided in Attachment B of the RI/FS Work Plan (1).
Existing conditions, as described in Section 6.2 above, have
significantly lower soil contaminant concentrations and therefore
could only produce lower results than those generated under
o_riginal Site conditions. Therefore, airborne particulates are not
considered a migration pathway at the site.
6-4
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7.0 CONTAMINANT FATE AND TRANSPORT
This section discusses the environmental migration and
transformation of pesticides found at the Geigy Site. All
available and appropriate technical literature was utilized in this
section to maximize the quantitative evaluation of migration and
transformation potential.
7.1 summary of Site conditions
As discussed in previous sections, the chemical constituents of
concern at the Site are pesticides. Other chemicals were not found
to be significant at the site and therefore are not discussed in
this section. Reviews of other detected chemicals are presented in
Sections 3,4 and 5 and have been determined to be not significant
or are not associated with the site, and therefore, are not
discussed in this section.
Specific pesticides were selected for discussion based on detection
in both the soil (including sediment) and groundwater at the Geigy
Site. The pesticides discussed in this section are listed in Table
7-1: aldrin; alpha, beta, gamma, and delta isomers of benzene
hexachloride (BHC); DDT; ODE; ODD; dieldrin; endrin ketone; and,
toxaphene.
Environmental matrices with pesticides are primarily soil and
groundwater. Maximum soil and groundwater concentrations for Site
pesticides are provided in Table 7-2. current maximum soil
concentrations were found at the surface and up to 2 feet below the
ground surface. These concentrations are orders of magnitude lower
than original site conditions as a result of removal actions in
1989 and 1991.
The BHC isomers are the primary pesticides that have been detected
in the groundwater. The maximum pesticide concentration found in
groundwater beneath the Site was 36 ug/1 alpha-BHC in monitoring
well MW-GS. The highest concentrations of pesticides in
groundwater were found in the following wells, located primarily in
the vicinity of the former warehouse: MW-2S, MW-5S, MW-GS, and MW-
lOS.
The remainder of this section discusses potential routes of
migration (Section 7.1), contaminant persistence (Section 7.2), and
finally a summary of contaminant fate (Section 7.3).
7.2 Potential Routes of Migration
For simplicity, the environment can be divided into three matrices:
air, soil, and water. Each of these environmental matrices
contains gases, solids, and liquids. For example, soil contains
interstitial air spaces, solid particles such as minerals and
organic matter, and water. All chemicals can migrate in the
environment. The amount or degree of migration or the limitation
of migration depend upon the chemical/physical properties, their
7-1
---.. IE ------
--.J
I N
Table 7-1
Physical and Chemcial Properties of Selected Site Pesticides
Geigy RI, Aberdeen, North Carolina
< ... < ) I t · Vapor-Henry's ) .... ,:•., ;" . Pressure(2) Law·
•• · Boiling • . Waler ConstanI (2) . /pl, ._ ... · (mm Hg, Ir . > . •·--.·_ Pofnt(l) · Solublllty(2) .•. 20 to 30 -(atm-cu m) .... =,?·->-::':')\:::-:,.
((deg. C.) (mg/I).
_. < .,::: :· . ..-.:deg; C.) ./(mole) •. -
Aldrin 145 0.18 6E-6 1.60E-5
(at 2 mm Hg)
alpha-BHC 288 1.63 2.50E-5 5.87E-6
beta-BHC 60 0.24 2.80E-7 4.47E-7
gamma-BHC 323 7.80 1.60E-4 7.BSE-6
delta-BHC 60 31.4 1.?0E-5 2.07E-7
ODD 193 0.1 1.89E-6 7.96E-6
ODE NA 0.04 6.50E-6 6.80E-5
DDT 260 0.005 5.50E-6 5.13E-5
Dieldrin Decomposes 0.195 1.78E-7 4.58E-7
Endrin Ketone (4) 245 0.23 7E-7 5E-7
(Decomposes)
Toxaphene Decomposes 0.5 0.4 4.36E-1
at >120 0.2-0.4 (5) 6.3E-2 (5)
Notes:
NA = Not Available
1 = Montgomery and Wetkom, Groundwater Chemicals Desk Reference,
Lewis Publishers, 1990
2 = Superlund Public Health Evaluation Manual, EPA, October 1986 (EPN540/1-86/060)
3 = Relative to distilled water
----••-·-__ •·-•-··••·>••r ·Log•
Koc(2) .
(ml/g) ?
4.98
3.58
3.58
3.03
3.82
5.89
6.64
5.39
3.23
3.92
2.98
4 = No data could be found for endrin ketone. Endrin ketone is a biodegradation product of endrin:
therefore, values for endrin were used. Data are from Montgomery and Welkom, 1990, -
5 = Montgomery and Welk om, 1990
b:CHEMPHYS.WKl
},81,
,·. . .. ,. 1i~ .-•: Denslty(l ,3).
5.30 1.70
3.90 1.87
3.90 1.89
3.90 1.89
4.10 1.87
6.20 1.48
7.00 NA
6.19 1.56
3.50 1.75
4.56 1.65
3.3 1.55
_,
I w
-.. .. -
PESTICIDE (1) Koc (2) Kd (3)
(ml/g) (ml/g)
-.. -_ :_-·,:.=:-: .....
Aldrin 96000 96
. •· . ; .
alpha-BHC 3800 4
1-:-=--: .-·.·-. _._._: 1 =-.::--.::·.:::c·=.: .
beta BHC 3800 4
_::.:·:,::,_-, . ,:-:::-., ('/::·: •,•,,, .. ::;:_ .··
gamma/BHC 1080 1
. •·· :· . -:=.-::.
della-BHC 6600 7
DOD 770000 no
b:sirrine.lb:7-2
-l!E l!!!!l!I
TABLE 7-2
SITE AND CHEMICAL DATA FOR PESTICIDES
THE GEIGY CHEMICAL CORPORATION SITE
ABERDEEN,NC
MAXIMUM SOIL CONG. (4) SAMPLE NUMBER DEPTH BELOW SURFACE
(mg/kg) (feet)
.----' ~-· -. -··
14 SS-12 (6) 0-1
0.13 SS-99--2 2
1.6 SS-73-5 5
ND -10
... ----
7.5 SS-03 0-1
1.6 SS-91-2 2
12 SS-73-5 5
ND -10
;· ... . •. ' .... ... ·.-:--.:: ·: ·-. -:· -·-=.-··•:=.:-=:=·
3.3 SS-03 0-1
1.6 SS-109-2 2
2.1 SS-73-5 5
0.018 SS-91-10 10
··.-.... ·.:--:·.-:.·.::.":." :.=:· ' .:: . -, .... •, :, ·,-·,--•.
0.62 SS-58-20S 0-1
0.36 SS-91-2 2
0.021 SS-92-5 5
ND -10
I>·· ··:::••,-.. -... ·-·::; .. -· .. . -: ., .. ,_ ... ·_ .. · -.•• ••. -
0.84 SS-58-20S 0-1
0.89 SS-91-2 2
1.9 SS-73-5 5
0.054 SS-113-10 10
·c • -. •.'
30 SS-06 0-1
1.4 SS-51-2 2
0.27 SS-76-5 5
0.23 SS-76-10 10
--
MAXIMUM GROUND WATEI MCL
CONCENTRATION (ppb) (ugn)
(Well No)
'-·:-.::.•.•· .. =.::·,
0.1 NA
(MW-4S)
··: . , __ . . . .-.·:-
36 NA
(MW-6S)
I •• -. .. • -: ..
25 NA
(MW-10S)
-·,.:-:::-·-'·'.'.: ,:.:-,. :::_·,-: ,•
30 0.2
(MW-6S)
. • .. •,-,, .. ,
29 NA
(MW-6S)
.· .. -_ ...
ND NA
--- - --- -- --·--
TABLE 7-2 (continued)
SITE AND CHEMICAL DATA FOR PESTICIDES
THE GEIGY CHEMICAL CORPORATION SITE
ABERDEEN,NC
PESTICIDE (1) Koc (2) Kd (3) MAXIMUM SOIL CONC. {4) SAMPLE NUMBER DEPTH BELOW SURFACE
(ml/g) (ml/g) (mg/kg)
,', : . '·::·.=.:-·,::· .. :-:, .. . . ·, ·.·-.. .·· .. -:-.·.-.
DOE 4400000 4400 11 SS-58-20S
2.5 SS-51-2
0.1 SS-76-5
0.059 SS-76-10
·,.
········
t•',•"· .· .. ·.
DDT 243000 243 59 SS-12 (6)
8 SS-51-2
2.6 SS-76-5
3.3 SS-76-10
I<·•-... ·=•·::-, .. , ............ · .. :_ .. ·-:·: -. -_
Dieldrin 1700 2 10 SS-12 (6)
0.28 SS-58-2
3.4 SS-73-5
ND -
:-= •·. ••• •• ·C:. -:·· . I . .--._.-·.:·
Endrin Ketone 8300 8 ND -
(5) (5) 0.28 SS-71-2
ND -
ND -
,· ... .•·
Toxaphene 864 1 400 SS-12 (6)
38 SS-51-2
280 SS-73-5
1,9 SS-76-10
NOTES:
(1) = Chemicals selected were either detected in ground water at the Site or found al an
elevated concentration in the vadose soil (i.e., toxaphene).
(2) Superfund Public Health Evaluation Manual, EPA, October 1986(EPA/540/1-86/060}
(3) Kd calculated by multiplying Koc by fraction of organic carbon= 0.001.
(4) Maximum is for soil remaining on Site.
(5) Endrin ketone is a transformation product of endrin: values are for endrin;
Koc 1or endrin is from Montgomery and Welkom, 1990.
(6). Blin~ split of S5_-06
-ND = Not Detected
-NA c: Not Available
-MCL = Maximum Contaminant Level
b:sirrine/b:7-2
(feet)
. .
0-1
2
5
10
0-1
2
5
10
. : __ .-
0-1
2
5
10
.. .· ,. .. _ .
0-1
2
5
10
0-1
2
5
10
MAXIMUM GROUND WATEI MCL
CONCENTRATION (ppb) (ugn)
(Well No)
<, . ' -cc ... 17Sc••
ND NA
.,_ :-_:_=:: ·,. ·'''
ND NA
.•.•' ....... ,
2 NA
(MW-10S)
·''.'
4 NA
(MW-10S)
·.: ,.--:· .
10 3
(MW-2S)
- - --
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persistence in the environment, and their participating in the
biota.
Chemicals released into the environment (e.g., pesticides) will
partition to each of the three environmental matrices, and within
each matrix, between the gas, solid, and liquid phases. The degree
of partitioning between phases and environmental matrices depends
on chemical-specific parameters such as water solubility, vapor
pressure, and equilibrium partitioning coefficients (e.g., Koc).
In addition, environmental partitioning depends on site-specific
parameters such as soil type, precipitation, and groundwater flow
rate.
Following is a discussion of specific routes of migration with
respect to air, soil, and water. Included are chemical-and Site-
specific factors that may influence migration at the Geigy Site.
7.2.1 Air Migration
Pesticides may migrate to the air either by volatilization or
through adsorption to particulate matter that becomes airborne
(fugitive dusts). Volatilization of pesticides may also occur from
fugitive dust while airborne. All the pesticides of concern can be
categorized as chlorinated organic types. As such, they are not
normally considered volatile compounds. Nevertheless, all such
compounds have a certain volatility.
7.2.1.1 Volatilization
Volatilization from water and wet soils is generally rapid and a
significant fate process for compounds with a Henry's law constant
greater than 0.001 atm-cu m/mole (Lyman et al., 1982). The low
vapor pressures and Henry's law constants (Table 7-1) for all Site
pesticides, except toxaphene, indicate that volatilization from
soil will be insignificant.
Toxaphene is the only pesticide that has significant potential to
volatilize from soil. The relatively high vapor pressure (0.2 to
0.4 mm Hg) for toxaphene compared to other pesticides indicates
that volatilization from dry soil may occur to a limited degree.
Toxaphene has the potential to volatilize from wet soil as
indicated by its relatively high Henry's law constant (0.436 atm-cu
m/mole) .
7.2.1.2 Fugitive Dust
Chlorinated organic pesticides may also be adsorbed to soil
particles and then be transported by fugitive dust. Pesticide
adsorption to soil is primarily a function of its Koc value and the
organic matter fraction of the soil. Higher Koc values or higher
organic fractions result in more adsorption potential between the
soil and the pesticide.
7-5
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The high Koc values (Table 7-1) and organic content of the soil
(approximately 0. 001 organic carbon fraction) indicate that the
pesticides currently at the Site will strongly adsorb to soil.
Therefore, if soil becomes airborne as fugitive dust, it is likely
that adsorbed pesticides will also become airborne. While
airborne, volatilization of the pesticide from its substrate (i.e.,
particulate matter) will not be significant, with the exception of
toxaphene.
The fate of the portion of the chemicals which remain adsorbed
(i.e., not volatized) will be dependent on the fate of the airborne
soil. Compounds on airborne soil may return to the ground either
by dry deposition (i.e., gravity) or wet, deposition (i.e.,
rainfall).
The higher concentrations of pesticides (i.e., 100 mg/kg gamma-BHC
and 500 mg/kg toxpahene) have been removed and replaced with clean
fill. The potential for fugitive emissions is minimal, considering
current levels at the Site.
7.2.2 Soil Migration (Surface Run-off and Vadose Zone)
Prior to removal actions, relatively high concentrations of
pesticides were found on or in the soil, primarily a silty sand, at
the site. Data discussed in Section 4 indicate that in spite of
relatively high concentrations of pesticides in the surface soil,
pesticides did not migrate to any significant extent. This could
be predicted and explained by examining the physical/chemical
properties in Table 7-1. Following is a discussion of the
potential for pesticides to migrate with surface soil and to
migrate through vadose zone soils.
7.2.2.1 Surface Soil Runoff
As discussed above, the pesticides will tend to adsorb to organic
matter and clay in the surface soil. Therefore, surface runoff
that transports soil particles would also transport adsorbed
pesticides. However, as discussed in Sections 2. 4. 3 and 5. 0,
surface runoff at the Site is limited areally by the high
permeability of Site soils; that is, stormwater runoff is quickly
adsorbed into the soils instead of flowing long distance or being
spread over large areas.
Drainage ditches at the Site are dry except during storm events.
During rainfall, Site soils may be transported to the ditches as
runoff and become sediment since the water is rapidly absorbed by
the soil. Areally-limited migration of pesticides to ditch
sediments has occurred. Maximum concentrations of pesticides are
found in the upper two feet of ditch sediment (Section 5).
7-6
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1.2.2.2
At least
pesticides
diffusion,
surfaces.
Migration Through Vadose Zone Soil
three natural mechanisms control the migration of
through vadose zone {unsaturated zone) soil: gaseous
bulk flow with a carrier, and adsorption to solid
Gaseous diffusion is a function of a compound's vapor pressure (,dry
soils) and Henry's law constant (moist soils). Toxaphene, with a
relatively high vapor pressure and high Henry's law constant (Table
7-1) has the potential to migrate in the vapor phase. Significant
amounts of toxaphene that were present in the vadose zone may have
migrated to the· soil surface and then into the atmosphere. The low
vapor pressures and low Henry's law constants for the other
pesticides indicate that gaseous diffusion would not be a
significant transport mechanism in the interstitial air spaces
within soil.
Bulk flow with a carrier is limited at the Site to percolation of
precipitation into the soil. The infiltrated water may transfer
pesticides downward within the vadose zone. In spite of relatively
high annual precipitation (approximately 45 inches per year),
pesticide mobility through the vadose zone is greatly slowed by'the
third factor that influences contaminant migration in the vadose
zone: equilibrium adsorption coefficients.
An equilibrium adsorption coefficient (Kd) can be approximated'for
pesticides in the aqueous phase of soil by multiplying the fraction
of organic carbon (foe; mass per mass basis) by the pesticide's
equilibrium organic carbon partitioning coefficient (Koc):
Kd (pesticide) = Koc (pesticide) x foe (soil).
The soil at the Site has an organic carbon fraction of
approximately 0.001 (Table 4-9). Estimated Kd values are provided
in Table 7-2. Actual Kd values for site pesticides will most
likely be higher since Kd, primarily a function of organic content
of the soil and the Koc of the pesticide, is also a function of the
soil texture. site soil is primarily a silty sand that will
contain significant adsorption sites. Adsorption sites on silt
particles will contribute to a higher Kd value for a pesticide than
if only organic content is considered.
The high Koc values (and resultant Kd values) and low water
solubilities indicate that dissolution and transport of pesticides
by infiltration through the soil would be minimal. This, is
supported by examining the depth profiles of maximum concentrations
versus depth for Site pesticides (Table 7-2).
However, low concentrations (ug/1) of pesticides were found in the
groundwater (Table 7-2). These data indicate that in spite of high
Koc values for Site pesticides, limited migration through the
.vadose zone has occurred. Quantitative predictions about the
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future transport of the remaining, low levels of pesticide residues
in the soil vadose zone to the groundwater will be made using
unsaturated transport modeling in the Feasibility Study (FS).
Qualitative predictions based on chemical and physical properties
of the pesticides and the soil, as discussed above, indicate that
transport of pesticides through the vadose zone will be slow.
7.2.3 Ground Water Migration
Following is a discussion of (1) migration of pesticides to
groundwater and (2) migration within groundwater.
7.2.3.1 Migration to Ground Water
Pesticides may migrate from a source area, through the vadose zone,
and then to groundwater. Data indicate that pesticides at the Site
have migrated to groundwater (Table 7-2). The BHC isomers are the
primary pesticides that have migrated to the groundwater. As
discussed, the maximum pesticide concentration found in groundwater
beneath the site is 36 ug/1 of alpha-BHC in monitoring well MW-GS.
The maximum delta-and gamma-BHC concentrations in groundwater are
29 ug/1 and 30 ug/1, respectively, in well MW-6S, while the maximum
beta-BHC concentration in groundwater is 25 ug/1 in monitor well
MW-10S.
7.2.3.2 Migration in Ground Water
One method to approximate the potential for a pesticide to migrate
through the groundwater is the retardation coefficient (Rd). Rd
can be estimated using the following equation:
Rd= 1 + Kd x (d/n) = Vw/Vc
where:
Rd is the retardation coefficient (dimensionless)
Kd is the equilibrium distribution coefficient (ml/g)
dis the soil bulk density (g/ml)
n is the effective soil porosity (decimal fraction)
Vw is the bulk groundwater rate (ft/year)
Ve is the contaminant rate (ft/year) for
surficial/intermediate aquifers
The Rd provides an estimate for attenuation of a pesticide in the
groundwater via advective flow. The Rd also estimates the velocity
of a pesticide relative to the velocity of the groundwater:
Rd values close to one indicate little tendency to bind to
soils and hence the contaminant moves freely with groundwater
Larger Rd values indicate a greater tendency for a contaminant
to bind to soil and hence slower transport with groundwater.
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Table 7-3 shows Rd values for the pesticides at the Site. Using Kd
values from Table 7-1 and assuming a soil bulk density of 1.5 g/ml
and an effective porosity of 0.38, Rd values range from 5 for
gamma-BHC and toxaphene to 17,000 for ODE. These Rd values
indicate that pesticides will not be very mobile in the
groundwater. Ground water data presented in Section 3 indicate
limited lateral extent of groundwater contamination. More detailed
groundwater modeling will be conducted in the FS.
7.3 Environmental Transformations
Environmental transformation of chlorinated organic pesticides in
environmental media can occur by biological and chemical processes.
The overall transformation of a pesticide in a specific
environmental media (e.g. surficial soils) may be a factor of
several transformation processes.
A summary of transformation processes for the pesticides of concern
are provided in Table 7-4. The terms "significant" . and
"insignificant" are used in the table for identifying important
transformation processes for each pesticide. These terms are not
being used for comparing one pesticide to another but .for
identifying dominant transformation processes for each pesticide.
7.3.1 Biological
Transformations of organic chemicals in the environment can occur
through the action of microorganisms attached to the soil or
existing in surface and ground water. Bacteria are ubiquitous in
subsurface soils. Even at low numbers, subsurface microbes can
possess adequate metabolic activity to significantly reduce the
levels of organic compounds migrating through the subsurface soil
profiles.
Biodegradation occurring in oxygen rich environments are referred
to as aerobic while transformations in the absence of oxygen are
referred to as anaerobic. The biodegradation requirements for
oxygen are pesticide specific. Some pesticides will biodegrade in
both oxygen-rich and oxygen-free environments; however, the rates
of degradation in each environment are typically very dissimilar.
Discussions follow for the Site pesticides excluding those
classified as "insignificant", in Table 7-4 with respect to
biodegradation.
Lichtenstein et al. (1959) performed an incubation of aldrin for 56
days at 6, 26, and 46 degrees C and observed 84, 56, and 14% of:the
initial amount recoverable. After 2 months incubation at 30
degrees C; 44, 58, and 33% of about 15 ppm of aldrin applied
remained in the Maahas, Luisiana, and Casiguran soils under upland
(80% water saturation), respectively. Lichtenstein et al. (1970)
treated aldrin to the soil at 5 lb/acre from 1958-62. Dieldrin was
formed from aldrin in the soil and constituted 50 and 90% of the
aldrin plus dieldrin residues recovered in 1959 and 1963,
7-9
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Table 7-3
Estimated Retardation Factors for Pesticides in Groundwater
The Geigy Chemical Corporation Site, Aberdeen, North Carolina
Aldrin 96000 96 380
alpha-BHC 3800 4 16
beta-BHC 3800 4 16
gamma-BHC (Lindane) 1080 5
delta-BHC 6600 7 27
DDD (4) 770000 770 3040
DDE 4400000 4400 17369
DDT (4) 243000 243 960
Dieldrin 1700 2 8
Endrin Ketone (5) 8300 8 34
Toxaphene 964 5
Notes:
1 = Superfund Public Health Evaluation Manual, EPA, October 1986 (EPA/540/1-86/060)
2 = Kd calculated by multiplying Koc by :,action of organic carbon = 0.001
3 = Rd = 1 + Kd x (din) Where: d is the soil bulk density (g/ml) = 1.5
n is effective porosity= 0.38
4 = Not detected in Site groundwater
5 = No data found for endrln ketone; data are for endrin
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__,
I ,.... ,....
---
Pesticide
Aldrin
alpha-BHC
beta-BHC
della-BHC
--i
Media(1) Photolysis
11111a
Table 7-4
Summary of Environmental Transformation■
Hydrolysis Aerobic
---I
Anaerobic Comment
Air Significant, indirect NA lnaignilicant Insignificant Rapid conversion to Endrln
~W,,-a~,.-,---t~S~ig~n~i~lic_a_n~,~. ~d~i,-•-ct,----tl~n-,~ig-n~lfi~.c-a-n7t---ts=;~g~n~lfi~,c-a-n7t,-a71ow~--+.S~ig-n~i~fi~c7a~n,~,7a71ow=-;
Soil Insignificant NA Significant Significant
-
Air Significant, slow NA NA NA From lsomerlzatlon of gamma-BHC (llndane)
~W,,-a~,.-,---t~S~ig~n~i~lic_a_n~t~. -,1~0-w----+s=1~ow------+s;=·~g-n~lfi~,c-a-n7t,-e71ow---+.Si~.-g-nl~fl~c-a7nt~.-,-.p~l~d,-;
Soil Significanl, slow NA Significant, slow Significant, rapid
Air NA NA NA Photolysie product of gamma-BHC (llndane),
~w"'-.,-.-,-+---------l-'--------,1--------+--------ilimited data available
Soll NA
::·. :-·.:=<·· ·_,:.:::= : ·:: -, :·, _:. ' . '::·: .: . ·.: :: .. _.. : ··=:-. :: .. ' "':,-' ._: /· ,,: ,:·, ', ,-,,,:_.,.,:,:,.-:•.: ,-,_. ·: :: _.-.: ·. ·=:· ·--:_:_:• .•• ,:::: ._:::•,. ·• '-:' .,,.· ;:-: :-·::/ -:" . : :<: ... ;-·::·. :: _:e:_: -:-,-:,-,::_-:,·
Air Limited data available
Water
Soll NA NA
·-.•,•,•
gamma-BHC ~Alc::.•--~~s;=·•~"=l=fi=c=•"='=· =•=low"'-------¼N"'-A'-,~-~~~+,,N=•c..,~~~---+N~A"-~-~-~---t Also known as llndane
Water Signllicant, slow Significant pH>7 Significant, slow Signtflcant, rapid
Soll Significant, slow NA Significant, slow Significant, rapid
DOD ~Al"'-, ----t~Si~g~n=lfi=c=•="='=· l=n=d~i•=•=c~•--+N=A"-~~~--+N~A"-~-~~----t~N~A~~-~~---tDegradatlon product of DDT
Water Significant, Indirect Insignificant Significant, slow Significant, slow
Soll Significant, indirect NA Significant, slow Significant, slow
:;_:,:,•:,:_.,, .::.-:=:-:·: :_:,·,, -::·.,_.::_ .. :,-,:_:;,::::,,.,,• '•• :=:-:·•:· :::-._.: ·:: ·.::,_'--:_:. ·,·_:,-,-
DOE ~•~1=, ----t~Si~g~n=lfi~c=•="='=· d=i=••~•~•---+N=A"-~~~---t-N_A'-,~~~-----t~N_A~~~~----t Degradation product of DDT
Water Significant, direct Insignificant Insignificant Insignificant
Soll Significant, direct NA Insignificant Insignificant
DDT ~~"'-~,-.-,---t~:~:~~=:~~:=:=~=:=: ~=~=t~i,~;=.-,--+~=/~~~.-n~lfi~c-•-n~,---t~-/-,l~g-n~lfl~c-•-n~,-----t~~"~~h~l~y-v-a-,l~a~b~l•--~Degradatlon Includes DOD and DOE
Soil Significant, direct NA Insignificant Highly variable
Oieldrin A!, Significant, direct NA NA NA
Water Significant, direct Insignificant Insignificant Insignificant
Soil Significant, direct NA Insignificant Insignificant ,.,
Endrin Ketone ~Al~•-----1----------+--------+N_A _______ __.~N_A ______ __.Limited data available, biodegradatlon
~W,c.::••=•='---t----------1,.,~-----+--------+-------~product of endrln Soll NA
Toxaphene Al, Significant, Indirect NA NA NA
Water Insignificant Insignificant Insignificant Can be significant
Soll Significant, indirect NA Insignificant Can be significant
Notee:
NA• Not Appllcable
(1) • Soll Indicates the vadoae or unsaturated zone.
The term a •significant• and •insignificant• are used fDf Identifying Important tranefOfmalion proceaaee tor each pesticide.
For photolysis, the terms •indirect• and •direct• are explained In the text.
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respectively. Although slow, biodegradation of aldrin in soil may
be significant.
Fifteen years following the application of alpha-BHC to a sandy
loam soil in Nova Scotia, Canada, 4% of the applied alpha-BHC
remained in the soil (Stewart, 1971). Of this amount, about 92%
was found between 0-20 cm indicating minimal leaching (Stewart,
1971). Incubation of aerobic and anaerobic soil suspensions for
three weeks resulted in disappearance of 11% to 26% of the added
compound, respectively (MacRae et al., 1984).
Gamma-BHC has been found to support the growth of microorganisms
isolated from loamy sand. Chloride ion formation was noted in
these cultures. The extent of gamma-BHC biodegradation by these
pure cultures was not given (Tu, 1976). From moist aerated soil,
62% of the gamma-BHC applied was recovered. The loss of gamma-BHC
from submerged anaerobic soil was nearly quantitative with only 4%
of the applied gamma-BHC recoverable (Kohnen et al., 1975). Six
weeks following treatment of soil, a number of chlorobenzene and
chlorocyclohexene compounds were detected. The absence of these
products from sterilized soil treated with gamma-BHC was cited as
evidence that the gamma-BHC metabolites resulted from
biodegradation (Mathur et al., 1975).
Incubation of aerobic and anaerobic soil suspensions of gamma-BHC
for three weeks resulted in the disappearance of 0 and 64% of the
applied gamma-BHC, respectively (MacRae et al., 1984). The result
was said to indicate that anaerobic degradation of gamma-BHC is
more extensive than aerobic degradation (MacRae et al., 1984). One
anaerobic biodegradation product of gamma-BHC is alpha-'BHC
(Montgomery and Welkom, 1990).
DDT is biodegraded by microorganisms in water, sediments, and soils
(Johnson, 1976 and Sanborn et al., 1977). Biodegradation under
environmental conditions has been shown to be quite variable,
however, with a number of factors playing a role, especially the
presence of anaerobic conditions and high populations of the
required microorganisms (Johnson, 1976 and Sanborn et al., 1977).
significant degradation has been demonstrated in soils under
anaerobic conditions, while little or no degradation was observed
under aerobic conditions (Johnson, 1976; Sanborn et al., 1977; and
Pan et al., 1970). Reported half-lives for DDT in soils range from
2 years to greater than 15 years (Lichtenstein et al., 1959; Tu,
1976; Jury et al., 1983; and Stewart et al., 1983). No change in
DDT concentration was found in raw river water over a period of 8
weeks (Eichelberger et al., 1959).
The biotransformations of DDT and its derivatives DDD and DDE has
been extensively studied in a number of biological systems. No
data are available to reliably assess the rate of DDT
transformation in water. Vast literature as well as the widespread
occurrence of DDT clearly indicates that DDT is not readily
metabolized in water. Biotransformations of DDT occurs more
readily under anaerobic conditions than in aerobic systems;
7-12
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transformations of DDT to DOE is favored in aerobic systems,
whereas DDD is the major metabolite in anaerobic environments
(Callahan, 1979).
Aerobic biodegradation of toxaphene is limited. Half-lives in
soils may range from 1 to 14 years (HSDB, 1991). Anaerobic
biodegradation may be a significant transformation process (HSDB,
1991).
7.3.2 Chemical
The chemical transformation of an organic pesticide in a specific
environmental media (e.g. air, water, and soil) at the Geigy Site
is primarily a function of photolysis and hydrolysis processes.
These processes are defined and described for the pesticides of
concern in the following sections.
7.3.2.1 Photolysis
Photolysis is the decomposition or chemical action due to the
action of light on a substance. The rate of a photochemical
process is determined by the rate of light absorption and the yield
of the process. The net rate of photochemical transformations is
the sum of the rates of all direct and indirect processes. Direct
and indirect photoprocesses can be described by first-order rate
expressions.
Direct photolysis is due to the absorption of electromagnetic
energy by a compound. In this direct process, absorption of a
photon promotes a molecule from its ground state to a
electronically excited state. The excited molecule then either
reacts to yield a photoproduct or decays to its ground state.
Indirect photolysis, sometimes. referred to as sensitized
photolysis, occurs in the simultaneous presence of humic materials,
dissolved oxygen, and sunlight. This combination often results in
an acceleration of the rate of transformation of organic compounds.
Indirect photolysis can be subdivided into two classes of
reactions. First, sensitized photolysis involves excitation of a
humic sensitizer by sunlight, followed by direct chemical
interaction between the sensitizer and a compound. The second
class of indirect photolysis involves the formation of chemical
oxidants, primarily via the interaction of sunlight, humic
materials, and dissolved oxygen. The primary oxidants known to
occur in natural waters are hydroxyl and peroxy radicals and
singlet oxygen.
Photolysis transformations occur in the atmosphere, water, and
soil. For the purpose of this investigation, photolysis occurring
in the atmosphere and surface water is not important. The
atmosphere serves as a removal pathway from the Site and there are
no surface waters in the vicinity of the Site. Photolysis in
surficial soils as discussed above is often accelerated by the
presence of humic materials in the surficial soils. Photolysis
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involving humic materials occur primarily via indirect processes.
Photolysis in soil occurs predominantly in the uppermost layer of
soil which is in contact with sensitizers and oxidizers, products
of indirect photolysis.
In reference to Table 7-4, pesticides in soils undergoing indirect
photolysis include DDD and toxaphene. Callahan et al. (1979)
reported that indirect photolysis of DDD may be substantial.
Indirect photolysis of toxaphene with photochemically produced
hydroxyl radicals was observed by Durkin et al. (1979). Half-life
of approximately 4 to 5 days for the indirect photolysis of
toxaphene was estimated.
Photolysis, however, will be significant only on the upper surface
of soil that is exposed to sunlight. Since the significant
contaminated soils has been excavated, photolysis will not be a
significant transformation process at the Site.
7.3.2.2 Hydrolysis
Hydrolysis is a decomposition reaction caused by chemical contact
with water. The chemical of concern reacts with water or with the
hydronium or hydroxide ions associated with water. The typical
reaction usually results in the introduction of a hydroxyl group
into the chemical compound with the loss of a functional group,
typically a halide (e.g., chlorine). In reference to Table 7-4,
the only pesticide that may be subject to significant hydrolysis is
gamma-BHC.
Gamma-BHC released to acidic or neutral water is not expected to
hydrolyze significantly, but in basic water, significant hydrolysis
may occur with a half-life of 95 hours at pH 9.3. The hydrolysis
half-lives are 936 and 433 hours at pH of 5 and 7, respectively.
The reactions were conducted at 25 degrees C (Saleh et al., 1982).
pH values for Site groundwater range from 4 to 7.
7.4 Summary of Contaminant Fate
Essentially, migration and natural transformation of the Site
pesticides will be limited. Toxaphene appears to be the most
environmentally mobile pesticide found at the Site since it will
volatilize to and degrade in the atmosphere and will anaerobically
biodegrade in soil and groundwater. The other pesticides will
migrate and degrade slowly, such that current concentrations of
pesticides in Site soil and groundwater will slowly decrease
primarily by dilution in soil and groundwater and to a lesser
extent through transformation. Potential transformations of Site
pesticides are summarized in Table 7-4.
7-14
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8.0 SUMMARY AND CONCLUSIONS
1. A remedial investigation {RI) was conducted at the Geigy
Chemical Corporation site by three PRP's {Olin Corporation,
CIBA-GEIGY Corporation and Kaiser Aluminum and Chemical
Corporation) in accordance with an AOC signed in December
1988.
2. Two removal actions {February 1989\October 1989 and March-
April 1991) were conducted during the time of the RI. The
removals greatly reduced the volume and concentration of
contaminants remaining in on-site soils, thereby minimizing
the potential for contaminant migration.
3. The hydrogeologic investigation at the Site identified
three aquifers beneath the Site. The uppermost aquifer
extends from the surface to a depth of approximately 63
feet at the eastern end of the Site and thins with the
topographic slope to approximately 40 feet near the western
end of the Site. Ground water within the uppermost aquifer
occurs under water table conditions. Saturated soils were
encountered at approximate depths of 35 to 45 feet below
ground level.
4. Ground water flow in the uppermost aquifer appears to be
controlled by recharge areas located at the eastern and
western ends of the site and by moderate topographic slopes
on the northern and southern sides of the Site.
Potentiometric data from the shallow monitor wells indicate
ground water flow from the eastern and western portions of
the Site meet in an elongated zone of convergence. East of
the convergence zone, ground water flows west and northwest
with a hydraulic gradient of approximately 0.026 ft/ft.
West of the convergence zone, ground water flow is
predominantly to the east-southeast with a hydraulic
gradient of 0.017 ft/ft.
5. The uppermost aquifer depth beneath the Site is underlain
by the uppermost confining layer. Samples collected from
the uppermost confining layer immediately underlying .the
site exhibited a laboratory permeability on the order of
10·8 cm/sec. Boring logs indicate that the thickness of the
uppermost confining layer immediately underlying the
facility property ranges from 6 to 20 feet. Within 'the
facility property, no hydraulic connection between the
uppermost aquifer and second uppermost aquifer was
indicated.
6. The second uppermost aquifer beneath the Site extends from
the base of the uppermost confining layer and is
approximately 40 feet thick. Ground water in the second
aquifer occurs at a depth of approximately 15 feet below
the base of the uppermost confining layer. The unconfined
conditions indicated in the second uppermost aquifer may be
due to its proximity to the outcrop of the aquifer
approximately 2,000-3,0000 feet west of the Site.
8-1
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7.
8.
9.
10.
11.
12.
13.
14.
Ground water elevation data indicate the ground water flow
direction in the second uppermost aquifer is generally
northwesterly. '.['he average hydraulic gradient for the
second aquifer was calculated to be 0.004 ft/ft.
The second aquifer is underlain by the second upperhtost
confining layer which was determined to be approximately 10
to 13 feet thick beneath the site.
The third uppermost aquifer at the Site extends from the
base of the second confining layer to approximately 60
feet. Ground water in the third aquifer occurs under
confined conditions. The single monitor well screened in
the third aquifer did not allow for determination of flow
direction or hydraulic gradient.
Contamination indicated in the uppermost aquifer beneath
the Site was limited to the pesticide constituents.
Detectable levels of pesticides were indicated in off-site
shallow well MW-l0S located approximately 120 feet south of
the Site. No volatile constituents, including TCEt or
semi-volatile constituents were detected in the uppermost
aquifer.
Pesticide contamination in the shallow aquifer is migrating
toward the center of the Site, away from the municipal
wells, due to the convergence of ground water flow from, the
east and west. This groundwater flow pattern indicates
that pesticide migration in the shallow aquifer system is
contained within the facility property boundary to the
west, as evidenced by the low pesticide concentrations in
well MW-3S and the absence of pesticides in wells MW-7S,
MW-13S, and USGS-02-03.
Pesticides were not detected in off-site shallow wells
located to the north (MW-7S, MW-BS and MW-9S), to the west
(MW-13S and USGS-02-3), or to the southwest (MW-12S) of the
Site. Pesticides were detected in off-site shallow well MW-
l0S located approximately 120 feet south of the site.
The vertical extent of pesticide contamination directly
beneath the site is limited to the uppermost aquifer. No
pesticides were detected in the second aquifer or the third
aquifer directly underlying the Site. Pesticides were
detected off-site in the second uppermost aquifer at MW-11D
located approximately 375 feet south of the Site. The
aquitard which separates the uppermost and second uppermost
aquifer beneath the Site is present at MW-11D.
Previous investigations conducted by EPA of private wells
in the area indicated the presence of pesticides in a
private domestic well (Booth well) located upgradient
(southeast) of MW-11D. Potentiometric contours of the
second uppermost aquifer indicate that ground water flow in
the vicinity of MW-11D is northwestward.
8-2
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15.
16.
17.
18.
19.
20.
21.
22.
Trichloroethene (TCE) was detected in the second uppermost
aquifer in two on-site monitor wells (MW-6D and MW-4D).
TCE was also detected upgradient (southeast) of the Site in
two off-site private domestic wells (i.e., PMP and Allred).
TCE was not detected in the soils·or shallow ground water
at the Site. Further characterization of the second
uppermost aquifer will be conducted during the pre-design
activities associated with the uppermost aquifer.
The lead concentration in the monitor wells was below the
MCL.
Volatile and semi-volatile constituents were not detected
in concentrations above the detection limit in any soil
samples.
Pesticide concentrations in on-site soils are generally
less than 100 mg/kg. Five samples had concentrations
greater than 100 mg/kg, with the highest concentration of
450 mg/kg at SS-06. (100 mg/kg is included as a relative
reference and is not meant to imply a clean-up standard).
All soil samples, with the exception of SS-06 and SS-73-5,
indicated pesticide concentrations in subsurface soils were
not present or were below 10 mg/kg total pesticides. (10
mg/kg is included as a relative reference and is not meant
to imply a clean-up standard).
Concentrations of copper and zinc in on-site soils were
within the ranges indicated in the background soils. Lead
concentrations were elevated in surface soils located
adjacent to Highway 211. Depth sampling at SS-82 (located
adjacent to the highway) indicated that lead concentrations
in the surface soils are not migrating vertically.
Total BHC, total DDT and toxaphene were detected in the
ditch sediments. BHC concentrations were detected at less
than 1 mg/kg in ditch sediments. The highest concentration
of total DDT was detected in off-site sediment OSD-27 at 77
mg /kg. Toxaphene was detected in the highest concentration
at SD-9-2.5 (130 mg/kg).
Airborne pesticide particulates were · found to be below
action levels (i.e., TLV /TWA) prior to removal of the
concentrated surface deposits. The removal actions
conducted at the Site have further reduced the potential
sources of airborne particulates at the Site. Therefore,
airborne particulates are not considered a migration
pathway at the site.
8-3
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(1)
( 2)
( 3)
( 4)
(5)
( 6)
(7)
(8)
( 9)
(10)
( 11)
(12)
References
ERM-Southeast, November 1989; Remedial Investigation/
Feasibility Study Work Plan, Geigy Chemical
corporation Site.
ERM-Southeast, April 1990; Project Operations Plan,
Geigy Chemical Corporation Site.
ERM-Southeast, May 1989; Field Activities Report,
Initial Soil Removal; and, ERM-Southeast, May 1990;
Phase 2 of Initial Soil Removal.
ERM-Southeast, August 1990; Warehouse Removal Work
Plan
ERM-Southeast, September 1990; Work Plan for Soils
Removal Associated with the Warehouse and Railroad
Spur.
Olin Corporation, March-April, 1991; Removal Report
NUS Corporation Superfund Division, March 1988;
Sampling Investigation Report, Geigy Chemical
Corporation Site.
Schipf, R.G., 1961, Geology and Groundwater Resources
of the Fayetteville Area; Ground Water Bulletin No. 3,
North Carolina Department of Water Resources, Division
of Ground Water, 99p.
Winner, M. and Coble, R. 1989, Hydrogeologic Framework
of the North Carolina Coastal Plain Aquifer System;
U.S. Geologic Survey Open-File Report 87-690, United
States Geological Survey, Raleigh, North Carolina, 155
p.
Giese, G.L., Eimers, J .L. and Coble , R.W. 1991.
Simulation of Ground Water Flow in the Coastal Plain
Aquifer System of North Carolina. United States
Geological Survey Open File Report 90-372, United
States Geological Survey, Raleigh, North Carolina, 178
p.
North Carolina Department of Natural Resources and
Community Development, Office of Water Resources,
1980, Groundwater Resources of the Southern Pines area
- A supplement to the Sand Hills capacity use study,
41 p.
Sirrine, May 1991; Addendum to the RI/FS Work Plan
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(13)
(14)
(15)
(16)
(17)
(18)
(19)
( 2 0)
( 21)
(22)
( 2 3)
Coble, Ron
Hydrologist,
NC, 27607.
W., 1991, personal communication,
United States Geological Survey, Raleigh,
Toth, H., 1962, A Theory of Groundwater Motion in
Small Drainage Basins in Central Alberta, Canada;
Journal of Geophysical Research, Vol, 67, No. 11,.pp.
4375-4387.
Toth, J., 1963, A theoretical Analysis of Groundwater
Flow in Small Drainage Basins: Journal of Geophysical
Research, Vol. 68, No. 16, pp. 4795-4810.
Correspondence from the Geigy Chemical Corporation
Site PRPs to the USEPA Regional Program Manager:
May 15, 1991
June 4, 1991
June 27, 1991
Freeze, R.
Groundwater.
Jersey. 604
40 CFR 141. 12
56 FR 3526
Revisions to deep borehole and surface
casing sizes.
Completion of MW-llD as a deep well.
Use of Volclay Pure Gold grout as an
annular sealant in deep wells.
Elimination of sediment, traps in
shallow wells as needed.
Reduction
intervals
MW-14D.
of split spoon ample
to 5 foot centers for Well
Allen and Cherry, John
Prentice-Hall, Englewood
p.
A. 1979.
Cliffs, New
40 CFR 141 and 40 CFR 143
Bouwer,
update.
H. 1989. Bouwer and Rice slug test -an
Ground Water. v. 27, pp. 304-309.
American Conference of Governmental Industrial
Hygienists. TLVs, Threshold Limit Value and Biological
Exposure Indices for 1988-1989. Cincinnati, OH, 1988.
Bouwer, H. and Rice, R.C. 1976. A slug test. for
determining hydraulic conductivity of unconfined
aquifers with completely or partially penetrating
wells. Water Resources Research. V. 12, pp. 423-428.
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D
Chapter 7
Callahan, Water-Rel Environ Fate Priority Pollut Vol
I, 1979 25-13
Durkin, PR et al; Reviews of the Env. Effects of
Pollutants: x. Toxaphene p. 8-1 USEPA-600/1-79-044
(1979)
Eichelberger JW, Lichtenberg JJ; Environ Sci Technol
5:
541-4 (1971)
Harris CR, Miles JRW; Pesticide Residues in the Great
Lakes Region of Canada, Residue Reviews, Residue of
Pesticides and Other Contaminants in the Total
Environment (1975)
Johnson RE; Res Rev. 61: 1-28 (1976)
Jury WA et al: Hazard Assessment of Chemicals, Saxena
J ed.2: 1-43 (1983).
Kohne R et al:
223-6 (1975).
Env Qual Safety Suppl Vol. III pp.
Lichtenstien EP, Schults KR; J Econ Entom 52: 124-31
(1959)
Lichtenstein EP et al:
(1984)
J Agr Food Chem 18: 100-6
Lyman, W. J. et al, Handbook of Chemical Property
Estimation Methods (1982).
Macrae IC et al; Soi: Biol Boichem 16: 285-6 (1984).
Mathur SP, Saha JG; Soil Sci 120:301-7
Menzie CM, Metabolish of Pesticide, An Update Special
Scientific Report Wildlife No. 184 (1974).
Miles JRW et al: J Econ Entomol 62: 1334-8 (1969)
Pan JF et al; Soil Sci 110: 306-12 (1970)
Salem F.Y. et al; env. Toxicol Chem 1: 289-97 (1982)
Sanborn FR et al; The Degradation of Selected
Pesticides in Soil: A Review of Published Literature,
pp. 616 USEPA-600/9-77-022 (1977).
Stewart DKR, Chishol D, Can J. Soil Sci 61: 379-83
(1971).
Tu Cm, Miles JRW; Res Rev 64: 17-65 (1976).
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I
I
I
I
I
I
I
D
D
0
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g
•
I
USEPA/CAG: Carcinogenicity Risk Assessment for
Chlordane and Heptachlor/Heptachlor Epoxide (Draft) p.
3-6 (1985) EPA Contract No. 68-02-4131.