NC0006351_Email (Pre-Corrective Measures)_20190520 (3)

Strickland, Bev
From: Mcdaniel, Robert
Sent: Monday, May 20, 2019 9:38 AM
To: Scheller, Roberto
Subject: Venator Chemicals LLC Pre -Corrective Measures Work Plan
Attachments: Venator Pre -CMS Investigation Workplan 2019-03.pdf
Roberto,
Attached is an electronic copy of the Pre -Corrective Measures Work Plan (March 2019) for Venator Chemicals (NCD 048
467 427) and the LaserFiche address for the work plan.
Pre- Corrective Measures Work
Plan: https://edocs.deg.nc.gov/WasteManagement/O/edoc/1286766/NCDO48467427 Venator%20Chemicals Correctiv
e%20Action 20190308.pdf?searchid=371c07db-8bc6-4988-b94d-605a81801918
If you have any questions, please contact me,
Rob
__7
tri RE Q7'
Robot ?McDaniel
Hy&-ogeologst, Drvisian opasre :Vm?ggement
Forth Carolina Delta tment of Em-ironmental Quahry
919-707-8215 (Office)
Robert.McDar ielmcdear.gov

The business of sustainability
Pre-Corrective Measures
Investigation Workplan
(Revision 1)
Venator Chemicals, LLC Facility
Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2
8 March 2019
Project No.: 0453288
ERM NC, Inc. 15720 Brixham Hill Avenue
Suite 120
Charlotte, NC
28277
Telephone: [phone]
Fax: [phone]

www.erm.com

8 March 2019

North Carolina Department Environmental Quality
Division of Waste Management
1646 Mail Service Center
Raleigh, N.C. 27699-1646
Attn: Mr. Rob McDaniel
[phone]
[e-mail]
Via Email

RE: Pre-Corrective Measures Investigation Workplan – Revision 1
Venator Chemicals, LLC Facility
Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2

Dear Mr. McDaniel:

On behalf of Venator Chemicals, LLC, ERM NC, Inc. is submitting this revised Pre-Corrective
Measures Investigation Workplan for the subject site. Revisions included in this document address
NCDEQ comments to the previous version (ERM, 23 January 2019) that were communicated orally
by you to Ms. Jonna Stein of Venator the week of February 25, 2019. The results of the pre-
corrective measures investigation and baseline risk assessment will be used to evaluate remedial
alternatives to address soil and groundwater contamination at the site. Comments regarding the
Workplan are requested from NCDEQ by March 25, 2019. If no comments are received by that date,
Venator will initiate implementation of the scope of work at that time.

Please contact Ms. Jonna Stein of Venator at [phone] or myself at [phone] if you
have any questions or comments.

Sincerely,

Alan Martin, P.G.
Project Manager

cc: Jonna Stein – Venator
Jerry Prosser – ERM
Ed Hollifield – ERM

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Venator Pre-CMS Investigation Workplan 2019-03 .docx
Signature page

8 March 2019

Pre-Corrective Measures Investigation
Workplan (Revision 1)

Venator Chemicals, LLC Facility Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2

Jerry Prosser, PG
Partner in Charge

Alan Martin, PG
Project Manager

ERM NC, Inc.
15720 Brixham Hill Avenue, Suite 120
Charlotte, NC 28277
[phone]

© Copyright 2019 by ERM Worldwide Group Ltd and / or its affiliates (“ERM”).
All rights reserved. No part of this work may be reproduced or transmitted in any form,
or by any means, without the prior written permission of ERM

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PRE-CORRECTIVE MEASURES INVESTIGATION WORKPLAN (REVISION 1)
Venator Chemicals, LLC Facility Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2
CONTENTS
CONTENTS
1. INTRODUCTION ................................................................................................................................ 1
2. SITE BACKGROUND INFORMATION .............................................................................................. 1
2.1 Site Location ......................................................................................................................................... 1
2.2 Site Ownership ..................................................................................................................................... 1
2.3 Site Description and Improvements ...................................................................................................... 2
2.4 Land Usage and Zoning........................................................................................................................ 2
3. SITE HISTORY ................................................................................................................................... 2
3.1 Operational History ............................................................................................................................... 2
3.2 Waste Management .............................................................................................................................. 3
3.3 Wastewater ........................................................................................................................................... 3
4. ENVIRONMENTAL SETTING ............................................................................................................ 3
4.1 Surface Features .................................................................................................................................. 3
4.2 Surface Water Hydrology ...................................................................................................................... 4
4.3 Regional and Local Geology and Hydrogeology ................................................................................... 4
4.3.1 Regional and Local Geology ................................................................................................ 4
4.3.2 Regional and Local Hydrogeology ....................................................................................... 4
4.4 Water Supply ........................................................................................................................................ 4
5. PREVIOUS ENVIRONMENTAL INVESTIGATIONS ......................................................................... 5
6. CURRENT SITE ENVIRONMENTAL CONDITIONS ......................................................................... 5
6.1 Soil Quality ............................................................................................................................................ 5
6.2 Ground Water Quality ........................................................................................................................... 5
6.3 Surface Water Quality ........................................................................................................................... 5
7. PROPOSED ASSESSMENT ACTIVITIES ......................................................................................... 5
7.1 Health and Safety ................................................................................................................................. 6
7.2 Soil and Groundwater Investigation ...................................................................................................... 6
7.3 Hydraulic Conductivity Testing .............................................................................................................. 8
7.4 Baseline Risk Assessment .................................................................................................................... 8
7.5 Pre-Corrective Measures Investigation Report ..................................................................................... 8
7.6 Proposed Schedule .............................................................................................................................. 9
8. REFERENCES ................................................................................................................................. 10

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PRE-CORRECTIVE MEASURES INVESTIGATION WORKPLAN (REVISION 1)
Venator Chemicals, LLC Facility Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2
CONTENTS
APPENDIX A SURVEYED SITE PLAN
APPENDIX B HISTORICAL SOIL DATA
APPENDIX C HISTORICAL GROUNDWATER GAUGING DATA
APPENDIX D HISTORICAL GROUNDWATER ANALYTICAL RESULTS
APPENDIX E HISTORICAL SURFACE WATER ANALYTICAL RESULTS

List of Tables
Table 1 Monitor Well Construction Data ........................................................................................... 11
Table 2 Ground Water Elevation Data - 2018 ................................................................................... 11
Table 3 Ground Water and Surface Water Analytical Results – 2018 .............................................. 11

List of Figures
Figure 1 Topographic Site Location Map ........................................................................................... 12
Figure 2 Site Plan ............................................................................................................................... 12
Figure 3 Regional and Local Geology ................................................................................................ 12
Figure 4 Water Supply Well Survey ................................................................................................... 12
Figure 5 Production Area Soil Data Coverage ................................................................................... 12
Figure 6 Ground Water Elevation Contour Map – Surficial Aquifer ................................................... 12
Figure 7 Ground Water Analytical Results and Trends ...................................................................... 12
Figure 8 Hydrogeologic Cross Sections ............................................................................................. 12
Figure 9 Proposed Monitor Well Location Map .................................................................................. 12

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PRE-CORRECTIVE MEASURES INVESTIGATION WORKPLAN (REVISION 1)
Venator Chemicals, LLC Facility Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2
CONTENTS
Acronyms
µg/L micrograms per liter
amsl above mean sea level
AOC Areas Of Concern
ASTs aboveground storage tanks
BOD biological oxygen demand
CAP Corrective Action Plan
cDCE cis-1,2-dichloroethene
CESQG Conditionally Exempt Small Quantity Generator
COC Constituent Of Concern
COC chain-of-custody
COD chemical oxygen demand
CCA chromated copper arsenate
DOT Department of Transportation
EPA Environmental Protection Agency
ERM ERM NC, Inc.
ESA Environmental Site Assessment
FOIA Freedom of Information Act
ft bls feet below land surface
ft2 square foot
HASP Health and Safety Plan
IDW investigation derived wastes
mg/kg milligrams per kilogram
MNA monitored natural attenuation
NPL National Priorities List
NTU Nephelometric Turbidity Units
ORP oxygen reduction potential
PCB polychlorinated biphenyl
PPE personnel protective equipment
PVC polyvinyl chloride
PWR partially weathered rock
QA Quality Assurance
QC Quality Control
RI Remedial Investigation
RI/FS Remediation Investigation/Feasibility Study
RSL Regional Screening Level
NCDEQ North Carolina Department Environmental Quality
RCRA Resource Conservation and Recovery Act
SIC Standard Industrial Classification
SRS sensitive receptor survey
SWMU Solid Waste Management Unit
TCE trichloroethene
TOC total organic carbon
TOC top of casing
TPH total petroleum hydrocarbons
USGS United States Geological Survey
USTs underground storage tanks
VOA volatile organic analysis
VOC volatile organic compound

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PRE-CORRECTIVE MEASURES INVESTIGATION WORKPLAN (REVISION 1)
Venator Chemicals, LLC Facility Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2
INTRODUCTION
1. INTRODUCTION
ERM NC, Inc. (ERM) has prepared this Pre-Corrective Measures Investigation Work Plan (Work Plan) on
behalf of Venator Chemicals, LLC (Venator) for their manufacturing facility located at 5910 Pharr Mill
Road, Harrisburg, Cabarrus County, North Carolina (hereafter called the “Site”, “Subject Property”, or
“Venator facility”). The results of the pre-corrective measures investigation and baseline risk assessment
will be used to evaluate remedial alternatives to address soil and groundwater contamination at the site,
including SWMU-5, if necessary.
The scope of work presented in this Work Plan is based on information obtained from various sources,
including:
 A review of current and past operational activities and waste management practices at the Site
 An evaluation of known potential sensitive receptors in the area
 Results of previous of soil, groundwater, and surface water investigations conducted at the site.
Activities proposed in this Work Plan supplement the previous significant soil, groundwater and surface
water assessment and monitoring activities conducted at this Site since 1985.
Proposed investigation activities and methods have been developed to satisfy RCRA post-closure
requirements.

2. SITE BACKGROUND INFORMATION
The Venator facility is located on two contiguous parcels comprising approximately 104 acres. The
property slopes from an elevation of approximately 560 feet above mean sea level (MSL) at the plant
toward the Rocky River at an elevation of approximately 530 feet MSL.
2.1 Site Location
The Venator facility is located at 5910 Pharr Mill Road, Harrisburg, Cabarrus County, North Carolina,
approximately 2.5 miles northeast of Harrisburg. The general location of the property and the
physiographic features of the surrounding area are shown on Figure 1, developed from the United States
Geological Survey (USGS) 7.5-minute quadrangles for Harrisburg and Concord SE, North Carolina dated
2016. The approximate coordinates of the site are: latitude 35.333º N; longitude 80.625º W. A property
layout and site map is provided as Figure 2. A Site survey dated 1993 is provided in Appendix A.
2.2 Site Ownership
The facility was originally developed in 1964 by Mineral Research and Development Corporation. A
summary of the ownership history of the site is provided below.
Summary of Ownership History
Year Activity
1965 Property acquired by Mineral Research and Development Corp.
1967 Facility began operation as Mineral Research and Development Corp.– specialty chemicals
for wood treating, metal finishing and agriculture
1996 Facility acquired by Chemical Specialties, Inc.

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PRE-CORRECTIVE MEASURES INVESTIGATION WORKPLAN (REVISION 1)
Venator Chemicals, LLC Facility Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2
SITE HISTORY
Year Activity
2014 Facility acquired by Huntsman Chemical October 1, 2014
2018 Facility name changed to Venator Chemicals, LLC on March 18, 2018
2.3 Site Description and Improvements
The Venator facility is located on two contiguous parcels comprising 104.04 acres. The property slopes
from an elevation of approximately 560 feet above mean sea level (MSL) at the plant toward the Rocky
River at an elevation of approximately 530 feet MSL. The Site is zoned I-1 light industrial. Less than 10
acres are used for process related activities. Buildings occupy approximately 60,000 square feet (ft2).
The facility includes office space, three warehouses, industrial and agricultural process lines, a
maintenance shop/truck bay area, a product sampling laboratory, a railroad spur, a wastewater treatment
facility, one active non-hazardous wastewater impoundment (SWMU-5), and a lined spill control basin
(SWMU-1). Both SWMU-1 and SWMU-5 are part of the NPDES wastewater treatment system.
2.4 Land Usage and Zoning
Land use in the vicinity of the Venator facility is a mix of residential, commercial, and wooded
undeveloped property. According to Cabarrus County, the property is zoned I-1 for light industrial activity.
Abutting properties and nearby land use include:
North: North Carolina Railroad Company (NCRR) track bounds the property to the north. State Highway
49 is located beyond.
East: Wooded undeveloped land and commercial facilities are located to the east of the facility across
Pharr Mill Road. Adjacent properties west of Pharr Mill Road are zoned I-1 light industrial.
Properties along the east side of Pharr Mill Road are zoned LI limited industrial.
South: The property is bordered to the south by Rocky River. Land south of the Rocky River is zoned
and developed as RL – low density residential (River Hills subdivision)
West: The area to the west of the site is undeveloped wooded land and primarily zoned RDL-low
density residential. The property immediately adjacent to the production area is zoned RE – rural
estate.

3. SITE HISTORY
3.1 Operational History
The Site has been operated as a chemical manufacturing facility since 1967. The facility manufactures
specialty chemicals for the wood treating, metal finishing, and agricultural industries. The facility
manufactures industrial and agricultural products at a rate of approximately 30,000 tons/year. Specific
product lines include:
Chromated copper arsenate (CCA) Arsenic acid Copper count “N” D-Blaze
Mg, Al, Ca, Zn, and Cu nitrates Acetates Ammonia carbonates Mg chloride
Processes are generally conducted in tanks as batch operations. Raw materials and finished products are
transported by truck and rail.

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PRE-CORRECTIVE MEASURES INVESTIGATION WORKPLAN (REVISION 1)
Venator Chemicals, LLC Facility Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2
ENVIRONMENTAL SETTING
3.2 Waste Management
Stormwater and process wastewaters generated from the arsenic and CCA production lines are collected
for re-use in the production process. No pesticide wastewaters go into the wastewater treatment system.
Other waste streams, as well as stormwater, are treated through the on-site wastewater treatment facility.
Wastewater treatment consists primarily of neutralization of low pH waters and precipitation of metals.
Settling of the precipitated lime sludges occurs in the non-hazardous wastewater settling impoundment
(SWMU-5). Hazardous wastes currently generated at the site are boxed or drummed for off-site shipment
and disposal within 90 days (EPA ID: NCD 048 467 427).
Four surface impoundments (SWMU-2 through 5) have been operated at various times throughout the
facility history for settling and evaporation of wastewaters. SWMU-1 has been used for spill containment
and is part of the wastewater treatment system. The dates of operation of SWMUs 1 through 5 are
summarized below.
SWMU # Date of Usage
1 August 1972 – 1987: unlined
1 1987 – present: lined
2 January 1972 – July 1974
3 December 1967 – December 1971
4 July 1974 – January 1976
5 February 1976 - present
Sludges in SWMU-1, 2, and 4 were determined to be characteristically hazardous due to the
concentrations of either arsenic, lead, cadmium, or chromium. Sludges in SWMU-3 and 5 were
determined to be non-hazardous. SWMU-1, 2, and 4 were closed in accordance with an EPA approved
hazardous waste closure plan in 1986. SWMU-3 was also closed in a similar manner. Wastes from
SWMU-1 were removed and consolidated with waste from the other SWMUs. A post-closure permit
application was submitted for the RCRA required facilities and a post-closure permit (NCD 048 467 427)
was issued to the facility on March 31, 1988.
There are no past or current hazardous waste landfills at the Venator facility. Sludges from RCRA
SWMUs 1 through 4 were chemically stabilized and rendered non-hazardous (as determined by EP
toxicity testing). The stabilized wastes were consolidated in SWMU-4. SWMU-4 is underlain by slightly
sandy clay with a laboratory permeability of 10-6 cm/sec. SWMU-4 was subsequently covered, capped
and re-vegetated. Although the closed SWMU-4 is considered a solid waste landfill, it is not a hazardous
waste landfill. Therefore, the requirements of 40 CFR 270.21 are not applicable to the facility.
3.3 Wastewater
The facility maintains a NPDES permit for discharge of treated stormwater and wastewater to Rocky River
– Permit #: NC0006351.

4. ENVIRONMENTAL SETTING
4.1 Surface Features
The property slopes south and southwest from an elevation of approximately 560 feet above mean sea
level (MSL) at the plant toward the Rocky River at an elevation of approximately 530 feet MSL.

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PRE-CORRECTIVE MEASURES INVESTIGATION WORKPLAN (REVISION 1)
Venator Chemicals, LLC Facility Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2
ENVIRONMENTAL SETTING
4.2 Surface Water Hydrology
The property is bounded to the southwest and south by the Rocky River. SWMU-5 is an active
wastewater settling impoundment. Water from SWMU-5 discharges to the Rocky River via a NPDES
outfall along the west property boundary.
4.3 Regional and Local Geology and Hydrogeology
4.3.1 Regional and Local Geology
The Venator facility is located within the Piedmont physiographic province. Geologically, the Site lies
within the Charlotte Belt consisting of mostly of metamorphosed igneous rocks, with some meta-volcanic
rocks. Rocks in the Charlotte belt are about 300-500 million years old. The belt trends along a southwest-
northeast axis.
The Site was mapped in 1989 and identified three bedrock units on-site, including gabbro, granite, and
syenite. The depth to bedrock varies across the site from 10 to 80 feet below ground surface. Bedrock is
overlain by saprolite, a chemically weathered clayey soil with original bedrock structures and textures
preserved. Alluvium is present in the Rocky River floodplain. Geologic maps of the Site are provided in
Figure 3.
4.3.2 Regional and Local Hydrogeology
There are two aquifers beneath the site. The surficial aquifer is hosted within the saprolite overlying
bedrock. A sub-unit of this aquifer is the partially weathered bedrock zone (PWR) at the transition from
saprolite to competent bedrock. This zone is generally coarser grained and groundwater flow is via both
advective and fracture flow. As a result, the PWR zone is characterized by higher permeability than the
saprolite zone and can be a preferred migration pathway for contaminants. Groundwater in the saprolite
aquifer generally discharges to the nearest creek, stream, or river. The saprolite aquifer is generally not a
reliable groundwater resource.
Underlying the saprolite aquifer is the bedrock aquifer. Groundwater flow within the bedrock aquifer is via
fracture flow. Groundwater in the bedrock aquifer generally discharges into larger streams and rivers,
such as the Rocky River. This aquifer is a groundwater resource in the area.
Groundwater flow in both the saprolite and bedrock aquifers is to the southwest and south terminating at
the Rocky River.
4.4 Water Supply
There are numerous water supply wells in the vicinity of the Site. There were five production wells on-site
at one time (see Figure 3). These wells are no longer in use and two of the wells, P2 and P5, have been
abandoned. The construction and status of the Site production wells are provided in Table 1. The
locations of the Site production wells is shown in Figure 3. The nearest community water supply well is
located 1.5 miles southwest of the site and is owned by the Town of Harrisburg. The nearest residential
water supply wells are located in the River Hills subdivision across the Rocky River south of the site as
shown in Figure 4.
Water samples have been collected from selected residential water supply wells. The laboratory results
of samples collected from these wells indicate that they have not been impacted with compounds of
concern (COCs) from the Site. Based on these data, and in the context of the site conceptual model,
groundwater from the site is believed to be discharging to the Rocky River and the river represents a
hydraulic boundary to off-site migration of COCs from the Site. The municipal water system was extended
to the River Hills subdivision in 1999.

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PRE-CORRECTIVE MEASURES INVESTIGATION WORKPLAN (REVISION 1)
Venator Chemicals, LLC Facility Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2
PREVIOUS ENVIRONMENTAL INVESTIGATIONS
5. PREVIOUS ENVIRONMENTAL INVESTIGATIONS
Summary of Environmental Investigations
Date Activity
1982 Hydrogeologic Investigation report
1985 Phase I and Phase II environmental assessments
1986 RCRA Post-Closure Plan
1989 Fractured bedrock and surface water interaction study
1990 Flow net study
1997 RCRA Facility Investigation (RFI) Report
2000 RFI report - revision 1
2002 RFI report - revision 2
1990s - present Groundwater monitoring (RCRA Compliance) reports
2017 Corrective Action Plan

6. CURRENT SITE ENVIRONMENTAL CONDITIONS
6.1 Soil Quality
Soil quality data coverage for the production area is shown in Figure 5. Soil analytical results are
provided in Appendix B. The depth to groundwater in the process area is generally between 5 to 8 feet
below ground surface.
6.2 Ground Water Quality
Groundwater in both the surficial and bedrock aquifers generally flows to the south and southwest toward
the Rocky River. Depth-to-groundwater gauging data are presented in Table 2 and groundwater
elevation contours for the surficial aquifer are shown in Figure 6. The primary contaminants of concern
include nitrate and manganese. Current groundwater analytical results are summarized in Table 3 and
shown in Figures 7 through 9.
6.3 Surface Water Quality
Manganese is the only Site contaminant of concern that exceeds the applicable surface water quality
reference standard. However, manganese concentrations from samples collected upstream of the Site
also exceed the reference standard. These data are an indication of elevated naturally occurring, or
background, concentrations of manganese in the Rocky River. Surface water data are summarized in
Table 3.

7. PROPOSED ASSESSMENT ACTIVITIES
The purpose of this workplan is to eliminate data gaps in the hydrogeologic data and site conceptual
model prior to preparing a corrective measures study for the Site. The proposed work includes:

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Venator Pre-CMS Investigation Workplan 2019-03 .docx
PRE-CORRECTIVE MEASURES INVESTIGATION WORKPLAN (REVISION 1)
Venator Chemicals, LLC Facility Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2
PROPOSED ASSESSMENT ACTIVITIES
1. Soil and groundwater investigation
a. Installation and sampling of four shallow soil borings/monitor wells at the production area
b. Installation and sampling of three soil boring/shallow monitor wells at SWMU-1
2. Hydraulic conductivity testing of selected monitor wells
3. Baseline risk assessment
4. Pre-Corrective Measures Study Investigation Report
7.1 Health and Safety
ERM has prepared a Health and Safety Plan (HASP) for the protection of on-site workers, the
surrounding community, and the environment from site investigation activities. The HASP includes
measures to control hazardous substances that may be generated from investigation-derived wastes (e.g.
soil and water).
7.2 Soil and Groundwater Investigation
The locations of proposed soil borings and monitor wells is shown in Figures 9A and 9B. Soil and
groundwater sampling will be conducted in accordance with NCDEQ approved methods and procedures
in conjunction with ERM’s Standard Operating Procedures (SOPs).
Soil Sampling
Soil samples will be collected from hand auger soil borings prior to advancing the borings with drilling
equipment for monitor well installation. Manual digging of the top five to eight feet of soil is required as
part of the subsurface clearance process for utility protection. Up to two soil samples will be collected
from each boring above the water table for laboratory analysis. Sample depth intervals will be selected
based on field observations including elevated PID screening results, apparent staining or other field
indicators of potential impact. In the absence of field observations indicating potential impact, a shallow
soil sample will be collected within the upper four feet of the boring and a deeper sample will be collected
immediately above the water table. Laboratory analyses will include:
Summary of Soil Sample Laboratory Analyses
# of samples Laboratory Analyses*
14 Soil Inorganics by EPA SW-846 Methods: Chloride, Nitrate, Nitrite, Sulfate
Metals by EPA SW-846 Methods: As, Ba, Cd, Ca, Cr (total and VI), Co, Cu, Mg, Mn, Na, Zn
VOCs by EPA Method 8260B
1 QA/QC Duplicate
15 Total
* - or equivalent to meet necessary detection limits
Monitor Well Installation
To complete the delineation of groundwater impacts at the production area, ERM will install seven
additional shallow monitor wells at the Venator facility. Proposed monitor well locations are shown on
Figures 9A and 9B. A monitor well will be installed in each of the four access driveways in the production
area where no groundwater data are currently available. Three monitor wells will be installed upgradient
and sidegradient of SWMU-1 to evaluate the source and extent of impacts associated with the
wastewater treatment plant, wastewater piping and SWMU-1.
The seven new monitor wells will be installed as standard Type II 2-inch diameter Schedule 40 PVC wells
to an approximate depth of 20 feet BGL. Actual well depth will be determined in the field based on
lithology, depth to water, and subsurface conditions encountered during drilling.
Soil borings for monitor well installations will be advanced using hollow stem auger drilling methods using
decontaminated tooling. Standard well construction techniques employing PVC screen and casing

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PRE-CORRECTIVE MEASURES INVESTIGATION WORKPLAN (REVISION 1)
Venator Chemicals, LLC Facility Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2
PROPOSED ASSESSMENT ACTIVITIES
materials, a sand filter pack, and bentonite grout seals will be employed, as per NCDEQ well regulations.
Wells will be completed at land surface in a protective secure manhole in a concrete pad. A North
Carolina licensed drilling company will be contracted to advance soil borings and complete monitoring
well installation activities under the supervision of an ERM Geologist.
Monitor Well Development
Upon the completion of each newly installed monitor well, ERM will allow at least 24-hours to pass before
development commences. ERM proposes to manually develop the wells using a combination of surge
block and dedicated bailer or submersible pump.
Surveying
A North Carolina certified land surveyor will survey the newly installed monitor wells. The survey will
include the ground elevation at each monitor well location and top of casing (TOC) elevations. The survey
will facilitate preparation of a groundwater elevation contour map, which will be used to derive accurate
direction of groundwater flow and gradients.
Groundwater Monitoring
Following monitoring well installation and well development, groundwater elevations and samples and will
be collected from the newly installed monitor wells via low stress (low flow) methods established by the
USEPA and ERM SOPs. A summary of the sampling and analysis plan is provided below.
Summary of Groundwater Sample Laboratory Analyses
# of samples Laboratory Analyses*
7 Groundwater Inorganics by EPA SW-846 Methods: Chloride, Nitrate, Nitrite, Sulfate, Total Dissolved Solids
Metals by EPA SW-846 Methods: As, Ba, Cd, Ca, Cr (total and VI), Co, Cu, Mg, Mn, Na, Zn
VOCs by EPA Method 8260B
1 QA/QC Duplicate
8 Total
* - or equivalent to meet necessary detection limits
Laboratory Analysis
ERM proposes to use Pace Analytical Services, a North Carolina certified laboratory for analytical testing.
Pace will provide laboratory-prepared glassware. The containers will be labeled with the site name,
analyses requested, sampler’s initials, date of collection, and time of collection. This information will be
transferred to the chain-of-custody (COC) to ensure proper tracking and analysis of the sample. Samples
will be placed on ice immediately after collection and maintained under proper COC control throughout
the handling process.
Quality Assurance / Quality Control Samples
Quality Assurance (QA) and Quality Control (QC) procedures will be used to ensure that technical data
generated during sampling activities are accurate, complete and representative of actual field conditions.
A minimum of one blind duplicate per 20 samples and at least one per sample matrix will be collected to
evaluate the consistency and reliability of laboratory analytical results.
Investigation Derived Waste
Both solid and liquid-phase investigation derived wastes (IDW) will be generated by the field investigation
team. Materials that may become IDW and require proper containment and storage include:
 Soil cuttings from drilling;
 Well development wastes;
 Decontamination fluids such as spent solvent and wash water;

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Venator Pre-CMS Investigation Workplan 2019-03 .docx
PRE-CORRECTIVE MEASURES INVESTIGATION WORKPLAN (REVISION 1)
Venator Chemicals, LLC Facility Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2
PROPOSED ASSESSMENT ACTIVITIES
 Personnel protective equipment (PPE), including disposable coveralls, gloves, booties, respirator
canisters, splash suits, etc.; and,
 Disposable equipment, including plastic ground and equipment covers, aluminum foil, Teflon
tubing, broken or unused sample containers, sample container boxes, tape, etc.
IDW will be segregated according to waste type (e.g., soil, drill cuttings, development water, PPE, etc.).
All IDW generated during assessment activities will be placed in Department of Transportation (DOT)
approved 55-gallon drums, properly labeled with contents, and stored on-site in a secure area pending
results of the investigation analyses. Characterization, transportation and disposal of IDW will be
conducted in general accordance with EPA Region 4’s Management of Investigation Derived Waste
Operating Procedure (SESDPROC-202-R3, July 3, 2014).
7.3 Hydraulic Conductivity Testing
Previous groundwater assessment activities did not include aquifer testing to estimate site hydraulic
characteristics. As part of the field activities, ERM proposes to perform initial aquifer testing by the slug
test method. Up to eight slug tests will be conducted at the Site following monitor well installation and
sampling. The following aquifer parameters will be derived from the slug tests and updated water level
data: hydraulic conductivity, transmissivity, vertical and horizontal groundwater gradients, and
groundwater flow velocity. While slug testing methods provide an estimate of hydraulic conductivity for a
only a limited portion of the aquifer, unlike a more comprehensive aquifer pumping test, the average
results of multiple slug tests can be a cost-effective method for estimating hydraulic conductivity across
an area of interest. A more comprehensive aquifer pumping test may be required in the event a more
precise hydraulic conductivity value is determined to be necessary.
Pressure transducers were installed in five monitoring wells in the vicinity of SWMU-5 during August 2018
and are currently recording groundwater elevations trends with respect to the bottom of sludge in SWMU-
5. A minimum of one year’s groundwater elevation data will be recorded and compared to the base of
SWMU-5 to evaluate the frequency, duration and thickness of the saturation of the SWMU-5 sludge.
These trends will be incorporated into the Pre-Corrective Measures Investigation report.
7.4 Baseline Risk Assessment
A baseline risk assessment will be prepared using NCDEQ’s Technical Guidance for Risk-Based
Environmental Remediation of Sites (March 2017). The risk assessment will evaluate potential exposure
pathways under the non-residential land use for on-site industrial worker, construction/utility worker, and
trespasser/recreational users, and will include quantitation of risk where pathways are complete. ERM will
select, and justify, the exclusion of receptors, pathways and routes of exposure that are not likely to
represent complete pathways of exposure at the site. ERM will prepare an overview of risk assessment
assumptions including plausibly complete exposure pathways to be evaluated and the type, duration and
magnitude of exposures to be used for the risk assessment. The risk assessment will ultimately be used
to determine appropriate site-specific remedial objectives that may be required to mitigate potentially
unacceptable risk. The methods and results of the risk assessment will be presented in the Pre-Corrective
Measures Report. An ecological risk assessment is not proposed at this time but may be considered in
the future as the conceptual site model is updated.
7.5 Pre-Corrective Measures Investigation Report
Upon completion of the assessment activities, a Pre-Corrective Measures Report providing details of the
results will be submitted to NCDEQ. The Report will include a discussion of field activities and results and
conclusions of the investigation. Analytical reports, soil and groundwater analytical results tables, figures,

www.erm.com Version: 1.3 Project No.: 0453288 Client: Venator 8 March 2019 Page 9
Venator Pre-CMS Investigation Workplan 2019-03 .docx
PRE-CORRECTIVE MEASURES INVESTIGATION WORKPLAN (REVISION 1)
Venator Chemicals, LLC Facility Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2
PROPOSED ASSESSMENT ACTIVITIES
field sheets, and laboratory reports will also be included in the report. A comprehensive site conceptual
model will be developed from the results of the investigation and historical site data.
7.6 Proposed Schedule
Proposed Schedule
Activity Completion Timeframe
NCDEQ approval of the Pre-CMS Investigation Workplan March 22, 2019
Installation and sampling of new production area soil borings/monitor wells May 31, 2019
Hydraulic conductivity testing June 28, 2019
Baseline risk assessment July 26, 2019
Completion of annual cycle of groundwater elevation transducer data collection September 30, 2019
Pre-CMS Investigation Report November 29, 2019

www.erm.com Version: 1.3 Project No.: 0453288 Client: Venator 8 March 2019 Page 10
Venator Pre-CMS Investigation Workplan 2019-03 .docx
PRE-CORRECTIVE MEASURES INVESTIGATION WORKPLAN (REVISION 1)
Venator Chemicals, LLC Facility Harrisburg, North Carolina
Facility ID #NCD 048 467 427-R2
REFERENCES
8. REFERENCES
Date Title Source
1982 Hydrogeologic Investigation for Mineral Research and Development Nelson, A. B.
1985 Groundwater Assessment Phase I for Mineral Research and Development Nelson, A. B.
1985-08 Groundwater Assessment Phase II for Mineral Research and Development Black & Veatch
1986-01 Surface Impoundment Closure Plan Engineering Tectonics
1986-12 RCRA Post-Closure Plan Engineering Tectonics
1989-11 Fractured Bedrock Aquifer and Surface Water Study Engineering Tectonics
1990-03 Flow Net Investigation Engineering Tectonics
1995-11 RCRA Post-Closure Permit Application Delta
1997-10 RCRA Facility Investigation Report Delta
2000-12 RCRA Facility Investigation Report – Revision 1 Delta
2002-10 RCRA Facility Investigation Phase II Report Delta
2005-12 RCRA Pose Closure Permit Application Delta
2006-02 2005 Annual RCRA Compliance Ground Water Monitoring Report Delta
2008-02 2007 Annual RCRA Compliance Ground Water Monitoring Report Delta
2009-02 2008 Annual RCRA Compliance Ground Water Monitoring Report Delta
2010-01 2009 Annual RCRA Compliance Ground Water Monitoring Report Delta
2010-01 RCRA Post-Closure Permit – Part B NCDENR
2011-01 2010 Annual RCRA Compliance Ground Water Monitoring Report Brown & Caldwell
2012-01 2011 Annual RCRA Compliance Ground Water Monitoring Report Brown & Caldwell
2013-06 2012 Annual RCRA Compliance Ground Water Monitoring Report Brown & Caldwell
2014-01 2013 Annual RCRA Compliance Ground Water Monitoring Report Brown & Caldwell
2015-01 2014 Annual RCRA Compliance Ground Water Monitoring Report Brown & Caldwell
2016-02 2015 Annual RCRA Compliance Ground Water Monitoring Report Brown & Caldwell
2017-01 2016 Annual RCRA Compliance Ground Water Monitoring Report Brown & Caldwell
2017-09 Groundwater Corrective Action Plan Brown & Caldwell
2018-01 2017 Annual RCRA Compliance Ground Water Monitoring Report Brown & Caldwell

The business of sustainability
Tables
Table 1 Monitor Well Construction Data
Table 2 Ground Water Elevation Data - 2018
Table 3 Ground Water and Surface Water Analytical Results – 2018
TABLE 1. MONITOR WELL CONSTRUCTIONScreened Ground MP Screen ElevationMonitor WellAquifer UnitDate Installed North EastMP DescriptionDiameter(in.)Intervals(ft BGL)Elevation (ft MSL)Elevation (ft MSL) Top BottomSaprolite Monitor WellsF-02S Saprolite 1988 580417.23 1516178.92 Top PVC pipe4 15.5-25.5571.98 573.27 555.50 546.50F-03S Saprolite 1988 580077.44 1515839.56 Top PVC pipe416.5-26.5561.86 563.08 545.50 535.50F-06S Saprolite 1981 579549.66 1516513.75 Top PVC pipe215-25570.40 573.39 555.00 545.00F-08S Saprolite 1988 -- --45-15550.20 555.60 550.00 540.00MW-01 Saprolite 1981 579993.22 1516388.72 Top PVC cap48-14572.93 575.23567.92 562.42MW-02 Saprolite 1981 579628.11 1515220.15 Top PVC cap414-19551.87 553.75540.74 535.24MW-03 Saprolite 1981 579344.52 1515367.44 Top PVC pipe412-18542.51 544.53537.25 525.75MW-04 Saprolite 1981 579108.00 1515675.03 Top PVC pipe48-14542.57 544.56536.84 531.84MW-05 Saprolite 1981 578904.41 1516123.54 Top cover49-14541.31 543.36536.12 530.62MW-06 Saprolite 1981 579172.65 1516360.12 Top PVC pipe48-14539.01 541.20533.49 528.49MW-07 Saprolite 579738.91 1515798.22 Top cover211-21553.55 553.64548.94 538.94MW-08 Saprolite 579692.37 1515716.27 Top PVC pipe210-20552.43 552.53548.34 538.34MW-09 Saprolite 579663.94 1515655.69 Top PVC cap210-20552.63 552.69548.52 538.52MW-10 Saprolite 579607.18 1515549.87 Top PVC pipe210-20552.90 552.91548.72 538.72MW-11 Saprolite 579047.57 1516946.83 Top PVC pipe20-22542.89 545.90549.01 527.01S-8S Saprolite 579499.90 1516126.49 Top cover 554.98 556.71552.20 542.20T-01 Saprolite 1992 -- --23.6-6.1 549.30 551.20545.70 543.20T-02 Saprolite 1992 579544.52 1515474.56 Top cover28-18 550.26 550.26 542.26 532.26T-03 Saprolite 1992 579615.04 1515290.46 Top PVC pipe25.6-13.1 552.56 554.90 546.96 539.46T-04 Saprolite 1992 579708.70 1515066.53 Top PVC pipe210.5-25.5553.92556.11 543.42 528.42T-05 Saprolite 1992 579707.23 1514873.01 Top cover215-30557.74 560.25 542.74 530.25T-06S Saprolite 1992 579703.59 1514967.73 Top PVC pipe27-17556.66 558.86 549.66 539.66PWR Monitor WellsT-07 PWR 1992 579517.45 1515387.22 Top PVC pipe226-36547.18 549.66 523.10 513.10Bedrock Monitor WellsF-02D Bedrock 1989 580411.23 1516183.08 Top PVC pipe3.25 34-74, 78-200572.22 573.31 2 screensF-03D Bedrock 1988 580076.38 1515832.65 Top cover3.2541.7-195.5561.82 563.43 5 screensF-04D Bedrock 1989 579628.59 1515227.58 Top cover3.2537.3-44.3, 47.3-105.3552.20 553.76 2 screensF-06C Bedrock 1989 579538.91 1516516.32 Top cover3.2571-88, 92-200569.79 570.35 2 screensF-06D Bedrock 1989 579544.06 1516518.64 Top cover620-25, 28-39, 42-75570.08 570.93 3 screensF-07D Bedrock 1989 579182.43 1516369.61 Top PVC pipe685.1-120.1539.22 539.60 5 screensF-08D Bedrock 1988 579504.34 1516124.14 Top cover3.2573.5-200555.15 556.48 5 screensMW-04D Bedrock579101.22 1515664.95 Top PVC pipe2191-201542.95 544.81352.56 342.56MW-05D Bedrock578897.32 1516114.52 Top cover2167-177541.36 543.38374.93 364.93MW-11D Bedrock579032.96 1516949.75 Top cover2542.30 545.17393.31 373.31T-06D Bedrock579701.46 1514962.40 Top PVC pipe243-51556.27 558.59 520.57 513.07T-08D Bedrock579708.25 1514977.45 Top PVC pipe284-104 557.53 557.47 473.53 453.47Production WellsP-1 Bedrock 1967 ------3.2529-244-- -- Casing to 29 ftP-3 Bedrock 1981 ------3.2520-244-- -- Casing to 20 ftP-4 Bedrock 1981 ------3.2521-374-- -- Casing to 21 ftERMPage 1 of 112/18/2018
TABLE 2. GROUNDWATER ELEVATION DATA
Monitor Well Aquifer Unit
Measuring
Point
(ft MSL) Date
Depth to
Water (ft)
Ground-
water
Elevation (ft
MSL)
Saprolite Monitor Wells
F-02S Saprolite 573.27 11/19/18 3.44 569.83
F-03S Saprolite 563.08 11/19/18 2.09 560.99
F-06S Saprolite 573.39 11/19/18 Dry --
F-08S Saprolite 555.60 11/19/18 5.45 550.15
MW-01 Saprolite 575.23 11/19/18 4.95 570.28
MW-02 Saprolite 553.75 11/19/18 10.72 543.03
MW-03 Saprolite 544.53 11/19/18 5.97 538.56
MW-04 Saprolite 544.56 11/19/18 5.97 538.59
MW-05 Saprolite 543.36 11/19/18 6.75 536.61
MW-06 Saprolite 541.20 11/19/18 7.14 534.06
MW-07 Saprolite 553.64 11/19/18 2.93 550.71
MW-08 Saprolite 552.53 11/19/18 3.51 549.02
MW-09 Saprolite 552.69 11/19/18 4.53 548.16
MW-10 Saprolite 552.91 11/19/18 6.05 546.86
MW-11 Saprolite 545.90 11/19/18 7.80 538.10
S-8S Saprolite 556.71 11/19/18 ----
T-01 Saprolite 551.20 11/19/18 ----
T-02 Saprolite 550.26 11/19/18 ----
T-03 Saprolite 554.90 11/19/18 11.61 543.29
T-04 Saprolite 556.11 11/19/18 7.02 549.09
T-05 Saprolite 560.25 11/19/18 11.48 548.77
T-06S Saprolite 558.86 11/19/18 9.05 549.81
PWR Monitor Wells
T-07 PWR 549.66 11/19/18 9.26 540.40
Bedrock Monitor Wells
F-02D Bedrock 573.31 11/19/18 ----
F-03D Bedrock 563.43 11/19/18 ----
F-04D Bedrock 553.76 11/19/18 ----
F-06C Bedrock 570.35 11/19/18 ----
F-06D Bedrock 570.08 11/19/18 ----
F-07D Bedrock 539.60 11/19/18 ----
F-08D Bedrock 556.48 11/19/18 ----
MW-04D Bedrock 545.92 11/19/18 11.08 534.84
MW-05D Bedrock 543.38 11/19/18 8.92 534.46
MW-11D Bedrock 545.17 11/19/18 10.75 534.42
T-06D Bedrock 558.59 11/19/18 8.99 549.60
T-08D Bedrock 556.48 11/19/18 ----
ft MSL - feet above mean sea level
ERM Page 1 of 1 12/18/2018
TABLE 3. GROUNDWATER AND SURFACE WATER ANALYTICAL RESULTS - NOVEMBER 2018SampleLocation SampleDateArsenicBariumCadmiumCalciumChromiumCobaltLeadMagnesiumManganeseSodiumZincChlorideNitrate (as N)Nitrite (as N)Tetrachloro-ethene1, 2, 4-Tri-chlorobenzeneGroundwaterNCDEQ 2L Groundwater Std 10 700 2 -- 101a15 -- 50 -- 1000 250 10 1 0.7 --MW-111/20/18 < 10.0 35.7 < 1.0 21,900 < 5.0 < 5.0 < 5.0 14,600 < 5.0 12,800 < 10.0 13.4 0.51 -- < 5.0 < 5.0MW-211/20/18 10.4 55.0 < 1.0 27,000 6.7 < 5.0 < 5.0 14,400 < 5.0 < 5,000 60 11.8 13.9 -- < 5.0 < 5.0MW-311/20/18 < 10.0 < 5.0 5.1 90,300 < 5.0 < 5.0 < 5.0 55,300 74.9 16,900 8,280 122 5.8 -- < 5.0 < 5.0MW-411/19/18 < 10.0 403 < 1.0 565,000 < 5.0 < 5.0 < 5.0 140,000 < 5.0 211,000 442 149 525 -- < 5.0 < 5.0MW-511/19/18 < 10.0 1,230 < 1.0 942,000 < 5.0 < 5.0 < 5.0 68,900 2,850 299,000 1,980 95.6 858 -- < 5.0 < 5.0MW-611/20/18 < 10.0 522 < 1.0 553,000 < 5.0 < 5.0 < 5.0 124,000 716 222,000 591 88 575 -- < 5.0 < 5.0MW-711/20/18 < 10.0 52.1 < 1.0 34,000 < 5.0 < 5.0 < 5.0 32,600 96.3 12,900 < 10.0 18.2 0.11 -- < 5.0 < 5.0MW-811/20/18 < 10.0 27.3 < 1.0 35,200 < 5.0 < 5.0 < 5.0 42,600 71.9 11,200 < 10.0 22.4 0.19 -- < 5.0 < 5.0DUP-0111/20/18< 10.0 24.3 < 1.0 34,500 < 5.0 < 5.0< 5.041,400 50.2 10,900 < 10.0 22.6 0.18-- < 5.0 < 5.0MW-911/20/18 < 10.0 27.1 < 1.0 33,200 < 5.0 < 5.0 < 5.0 34,400 34.8 10,500 < 10.0 19.1 0.45 -- < 5.0 < 5.0MW-1011/20/18 < 10.0 56.3 < 1.0 52,300 < 5.0 < 5.0 < 5.0 34,000 134 15,800 < 10.0 73.8 2.5 -- < 5.0 < 5.0MW-1111/20/18 < 10.0 55.8 < 1.0 4,690 < 5.0 < 5.0 < 5.0 2,490 < 5.0 8,060 < 10.0 3.9 4.6 -- < 5.0 < 5.0Private Well 11/20/18 < 10.0 51.2 < 1.0 21,100 < 5.0 < 5.0 < 5.0 11,800 < 5.0 10,700 < 10.0 16.1 3.2 -- < 5.0 < 5.0Surface Water - Rocky RiverNCDEQ 2B Freshwater Aquatic Lif150 -- 0.15 -- 11 -- 0.54 -- -- -- 36 230 -- -- 120NCDEQ 2B Human Health Std 10 200,000 -- -- -- -- -- -- -- -- -- -- -- -- 3.3Upstream11/20/18 < 10.0 40.1 < 1.0 12,900 < 5.0 < 5.0 < 5.0 6,550 92.1 11,000 < 10.0 12.2 2.5 -- < 5.0 < 5.0Midstream11/20/18 < 10.0 45.7 < 1.0 16,300 < 5.0 < 5.0 < 5.0 7,120 118 12,800 59.4 12.3 4.5 -- < 5.0 < 5.0Downstream 11/20/18 < 10.0 69.1 < 1.0 15,900 5.7 < 5.0 < 5.0 7,570 301 12,600 24.9 12 4.1 -- < 5.0 < 5.0= Concentration exceeds respective NCDEQ 2L Groundwater or NCDEQ 2B Surface Standard (Freshwater Aquatic Life or Human Helath Standard). a - Cobalt standard is an interim maximum allowable concentration (IMAC). µg/L - micrograms per literDUP - Duplicate sampleb - Chronic Freshwater Aquatic life standard shown where available.mg/L - milligrams per liter"--" - Not availableInorganics (mg/L)Metals (µg/L)VOCs (µg/L)

The business of sustainability

Figures
Figure 1 Topographic Site Location Map
Figure 2 Site Plan
Figure 3 Regional and Local Geology
Figure 4 Water Supply Well Survey
Figure 5 Production Area Soil Data Coverage
Figure 6 Ground Water Elevation Contour Map – Surficial Aquifer
Figure 7 Ground Water Analytical Results and Trends
Figure 8 Hydrogeologic Cross Sections
Figure 9 Proposed Monitor Well Location Map

Figure 1Site Location MapVenator FacilityEPA Facility I.D. 048 467 4275910 Pharr Mill Road RoadHarrisburg, NC
Legend
Site
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Figure 2Site MapVenator FacilityEPA Facility I.D. 048 467 4275910 Pharr Mill Road RoadHarrisburg, NC
Legend
&,Monitoring WellSiteSWMURiverRail Road TracksParcel100 Year Flood Plain
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Source: NC Center for Geographic Information & Analysis
GRANITEGABBROSYENITEGRANITEALLUVIUMFREQUENCY OF FRACTURES AND JOINTSQUARTZ DIORITEFigure 3Regional and Local Geologic MapsVenator FacilityFacility I.D. NCD 048 467 4275910 Pharr Mill Road RoadHarrisburg, NCEnvironmental Resources ManagementGABBROCONCORDPLUTONICSUITEMETA-VOLCANICROCKSSITEQUARTZDIORITEN2 MILESMap date: 1989Former production wellGABBRO
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5910 Pharr Mill Rd, Harrisburg, NC
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Parcel Information
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3Figure 4
200 FEETNBase map source: 2016 Annual RCRA Compliance Groundwater Monitoring Report, Brown & Caldwell(avg. 76 ug/l)(avg. 126 ug/l)(avg. 247 ug/l)(avg. 135 ug/l)pH -Mn-pH -Mn-pH -Mn-pH -Mn---ImprovingStableNot improvingStandard generally not exceeded1997 Soil data available2002 soil dataHighly impacted monitor wellFormer Production wellCOC TrendP-1P-2MW-02pH (6.1)TDSChlorideNitrateCaMgMnNaT-06SArsenicT-06D(75 ft)TDSChlorideCaCoMgMnNaZnT-08D(200 ft)TDSpH (10.7)ChlorideCaNa2L MW-2 MW-7 MW-8 MW-9 MW-10 T-06D T-06S T-08DpH SU 6.5-8.5 6.16.8 6.9 6.8 6.9 7.6 6.410.7TDS mg/L 500 1,020280 359 312 3291,2201431,140Chloride mg/L 250 35721.2 24.4 24.5 40.878.76.5609Nitrate (as N)mg/L 10 1830.23 0.27 0.56 0.511071.3 0.079Arsenic µg/L 10< 10.0 < 10.0 < 10.0 < 10.0 < 10.0 < 10.046.8< 10.0Cadmium µg/L 2< 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0Calcium µg/L -- 294,00034,900 39,200 37,400 39,700206,00029,30065,100Cobalt µg/L 1a< 5.0< 5.0< 5.0< 5.0< 5.035< 5.0 < 5.0Mg µg/L -- 155,00030,300 45,800 36,200 31,30090,70011,400 5,520Mn µg/L 50 302 165 58.6 119 98.9 704< 5.0 15Sodium µg/L -- 36,20011,500 12,600 11,800 12,60033,3006,670414,000Zinc µg/L 1000314 < 10.0 < 10.0 < 10.0 < 10.01,300 80.4< 10.0Primary COC Elevated concentrations# Process Area Metals and Chloride AOCs13 copper Solution Production Sludge Collection Area18 w aste Oil Storage Area23 zinc Nitrate/Calcium Nitrate Reaction Vessel Scrubbers24 Zinc Nitrate/Calcium Nitrate Reaction Vessel Scrubbers27 Old Zinc Chloride Production Facility32 Off-Spec Product Waste Storage Area33 Copper Kettle waste Drum Storage Area42 Old Zinc Chloride Production Facility43 Copper Chromate Production Facility Floor Hole44 Fiberglass Tank #145 Fiberglass Tank #248 Chromic Acid Sparger Dike and Sump51 Ultraw ood Mix Tank Dike and Sump52 Loading Weigh Scale Bridge Dike and Sump53 198 (Arsenic Acid) Plant Dike and Sump Pits (2)55 Refinery Dike and Sump Pit56 CCA Production Area Sumps69 Liquid Chromic Acid Storage and Wastewater Dikes and Sumps81 Sodium Dichromate storage Tank Dike and sump84 198 Plant Storage Tank in the CCA Production Area87 copper Sulfate Storage Tank Dike and Sump89 Storage Tanks T-177/178 Dike and Sump91 Zinc Chloride/Preact Storage Tanks Dike and Sump92 Calcium Nitrate Storage Tanlc Dike and SumpPARKING LOTDRAIN TRENCHROLL-OFFBOX RELEASEROLL-OFFBOX RELEASETRUCKMAINTENANCESTORM DRAINNETWORKCCAPRODUCTIONROLL-OFFBOX RELEASEBOILERBLOWDOWNCa, Zn,NITRATEZINC,CHLORIDEARSENICCa, NITRATEREFINERY-SODIUMOld Zn,CHLORIDEGLYCOLARSENICACID(at closure)111Mg CHLORIDETRENCH DRAINFigure 5Production Area Soil Data CoverageVenator FacilityFacility I.D. NCD 048 467 4275910 Pharr Mill Road RoadHarrisburg, NCEnvironmental Resources ManagementPRODUCTION AREA GROUNDWATER DATA
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Figure 6Groundwater ElevationContour Map - Surficial AquiferVenator FacilityEPA Facility I.D. 048 467 4275910 Pharr Mill Road RoadHarrisburg, NC
Legend
&,Monitoring WellSiteSWMURiverRail Road TracksParcelGroundwater Elevation ContourApproximate Groundwater Flow
FILE: \\SDCLTDC01\Data\Charlotte\Projects\0482115 Venator Materials Corporation (FR) Monitoring.AM\08_Graphics\00 GIS\MXD\Figue_3.mxd, REVISED: 01/03/2019 , SCALE: 1:2,400 when printed at 11x17DRAWN BY: CLT - KVNote: Groundwater elevation data from 11/19/18
0 200 400Feet
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ERMERM NC, Inc.www.erm.com
Source: NC Center for Geographic Information & Analysis
Monitor Well
Depth to Water (ft)
Ground-water Elevation (ft MSL)MW-1 4.95 570.28MW-2 10.72 543.03MW-3 5.97 538.56MW-4 5.97 538.59MW-4D 11.08 534.84MW-5 6.75 536.61MW-5D 8.92 534.46MW-6 7.14 534.06MW-7 2.93 550.71MW-8 3.51 549.02MW-9 4.53 548.16MW-10 6.05 546.86MW-11 7.80 538.10MW-11D 10.75 534.42F-02S 3.44 569.83F-03S 2.09 560.99F-08S 5.45 550.15T-03 11.61 543.29T-04 7.02 549.09T-05 11.48 548.77T-6S 9.05 549.81T-6D 8.99 549.60T-07 9.26 540.40
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Figure 7AGroundwater Analytical Results and TrendsVenator FacilityEPA Facility I.D. 048 467 4275910 Pharr Mill Road RoadHarrisburg, NC
Legend
&,Monitoring WellSiteSWMURiverRail Road TracksParcelApproximate Groundwater Flow
FILE: \\SDCLTDC01\Data\Charlotte\Projects\0482115 Venator Materials Corporation (FR) Monitoring.AM\08_Graphics\00 GIS\MXD\Figue_4.mxd, REVISED: 01/03/2019 , SCALE: 1:2,400 when printed at 11x17DRAWN BY: CLT - KV0 200 400Feet
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ERMERM NC, Inc.www.erm.com
Source: NC Center for Geographic Information & Analysis
Improving
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-Standard generally not exceeded
COC Trend
54 mg/L
1,319 ug/L
652 mg/L 42 mg/L
17,723 ug/L
1,168 mg/L
273 ug/L
23J mg/L
937 mg/L
79 ug/L
120 ug/L
223 ug/L
135 ug/L
pH
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pH
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COC Regulatory Standards
COC Unit MCL NC GWS
pH pH Units 6.5-8.5
Total Dissolved Solids (mg/l)500
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Nitrate mg/l 10 10
Barium ug/l 2,000 700
Cadmium ug/l 5 2
Chromium ug/l 100 10
Lead ug/l 15 15
Manganese ug/l -50
Zinc ug/l - 1,000
PCE ug/l 5 0.7
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Legend
&,Monitoring WellSiteSWMURiverRail Road TracksParcel
Approximate Groundwater Flow
FILE: \\SDCLTDC01\Data\Charlotte\Projects\0482115 Venator Materials Corporation (FR) Monitoring.AM\08_Graphics\00 GIS\MXD\Figue_5A.mxd, REVISED: 01/03/2019 , SCALE: 1:900 when printed at 11x17DRAWN BY: CLT - KV0 75 150Feet
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ERMERM NC, Inc.www.erm.com
Source: NC Center for Geographic Information & Analysis
Improving
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Legend
&,Monitoring WellSiteSWMURiverRail Road TracksParcel
Approximate Groundwater Flow
FILE: \\SDCLTDC01\Data\Charlotte\Projects\0482115 Venator Materials Corporation (FR) Monitoring.AM\08_Graphics\00 GIS\MXD\Figure_5B.mxd, REVISED: 01/03/2019 , SCALE: 1:1,200 when printed at 11x17DRAWN BY: CLT - KV0 75 150Feet
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ERMERM NC, Inc.www.erm.com
Source: NC Center for Geographic Information & Analysis
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937 mg/L
pH
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Cl
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Mn
PCE
Environmental Resources ManagementFigure 8AHydrogeologic Cross SectionVenator FacilityFacility I.D. NCD 048 467 4275910 Pharr Mill Road RoadHarrisburg, NCSource: Modified from Delta, 1997AA’F-01F-05F-02F-03MW-01F-08 MW-05SAPROLITEFRACTURED BEDROCKDIORITE AND GABBRO SWMU-5
Environmental Resources ManagementSWMU-5Figure 8BHydrogeologic Cross SectionVenator FacilityFacility I.D. NCD 048 467 4275910 Pharr Mill Road RoadHarrisburg, NC100 200 300 400 500600 700 800900 1000 1100FEETELEVATION (feet)MW-05MW-05DMW-04MW-04DG-7-AG-7-BG-4-BG-1-ASLUDGESENWFRACTURED BEDROCK SAPROLITE SWMU 5 Mn PLUME PROCESS WATERROCKYRIVER(535 ft)ROCKYRIVER(535 ft)Mn 273 ug/lTD = 177 ft BGLScreened 365-375 ft MSL550540530520510500490480470460450440430420410400390380370360Mn 15,100 ug/l10,000 Mn 177 ug/lSWMU 4/5 PLUME TD = 201 ft BGLScreened 342-352Mn 1,150 ug/lLegendMonitor wellSoil boringSoil boringMonitor well
200 FEETNBase map source: 2016 Annual RCRA Compliance Groundwater Monitoring Report, Brown & Caldwell(avg. 76 ug/l)(avg. 126 ug/l)(avg. 247 ug/l)(avg. 135 ug/l)Proposed monitor well1997 Soil data available2002 soil dataLegend2L MW-2 MW-7 MW-8 MW-9 MW-10 T-06D T-06S T-08DpH SU 6.5-8.5 6.16.8 6.9 6.8 6.9 7.6 6.410.7TDS mg/L 500 1,020280 359 312 3291,2201431,140Chloride mg/L 250 35721.2 24.4 24.5 40.878.76.5609Nitrate (as N)mg/L 10 1830.23 0.27 0.56 0.511071.3 0.079Arsenic µg/L 10< 10.0 < 10.0 < 10.0 < 10.0 < 10.0 < 10.046.8< 10.0Cadmium µg/L 2< 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0 < 1.0Calcium µg/L -- 294,00034,900 39,200 37,400 39,700206,00029,30065,100Cobalt µg/L 1a< 5.0< 5.0< 5.0< 5.0< 5.035< 5.0 < 5.0Mg µg/L -- 155,00030,300 45,800 36,200 31,30090,70011,400 5,520Mn µg/L 50 302 165 58.6 119 98.9 704< 5.0 15Sodium µg/L -- 36,20011,500 12,600 11,800 12,60033,3006,670414,000Zinc µg/L 1000314 < 10.0 < 10.0 < 10.0 < 10.01,300 80.4< 10.0Primary COCElevated concentrations# Process Area Metals and Chloride AOCs13 copper Solution Production Sludge Collection Area18 w aste Oil Storage Area23 zinc Nitrate/Calcium Nitrate Reaction Vessel Scrubbers24 Zinc Nitrate/Calcium Nitrate Reaction Vessel Scrubbers27 Old Zinc Chloride Production Facility32 Off-Spec Product Waste Storage Area33 Copper Kettle waste Drum Storage Area42 Old Zinc Chloride Production Facility43 Copper Chromate Production Facility Floor Hole44 Fiberglass Tank #145 Fiberglass Tank #248 Chromic Acid Sparger Dike and Sump51 Ultraw ood Mix Tank Dike and Sump52 Loading Weigh Scale Bridge Dike and Sump53 198 (Arsenic Acid) Plant Dike and Sump Pits (2)55 Refinery Dike and Sump Pit56 CCA Production Area Sumps69 Liquid Chromic Acid Storage and Wastewater Dikes and Sumps81 Sodium Dichromate storage Tank Dike and sump84 198 Plant Storage Tank in the CCA Production Area87 copper Sulfate Storage Tank Dike and Sump89 Storage Tanks T-177/178 Dike and Sump91 Zinc Chloride/Preact Storage Tanks Dike and Sump92 Calcium Nitrate Storage Tanlc Dike and SumpPARKING LOTDRAIN TRENCHROLL-OFFBOX RELEASEROLL-OFFBOX RELEASETRUCKMAINTENANCESTORM DRAINNETWORKCCAPRODUCTIONROLL-OFFBOX RELEASEBOILERBLOWDOWNCa, Zn,NITRATEZINC,CHLORIDEARSENICCa, NITRATEREFINERY-SODIUMOld Zn,CHLORIDEGLYCOLARSENICACID(at closure)111Mg CHLORIDETRENCH DRAINFigure 9AProposed Monitor Well LocationsVenator FacilityFacility I.D. NCD 048 467 4275910 Pharr Mill Road RoadHarrisburg, NCEnvironmental Resources ManagementPRODUCTION AREA GROUNDWATER DATA4321765
Figure 9BProposed Monitor Well LocationsVenator FacilityFacility I.D. NCD 048 467 4275910 Pharr Mill Road RoadHarrisburg, NCEnvironmental Resources Management0 25 50100FEETSWMU-143215DRIVE 4DRIVE 3DRIVE 2DRIVE 1PRODUCTION AREABUILDINGWASTEWATERTREATMENTT-06ST-06DT-08DT-04Proposed monitor wellExisting monitor well167

The business of sustainability

APPENDIX A SURVEYED SITE PLAN

The business of sustainability

APPENDIX B HISTORICAL SOIL DATA

BACKGROUND SOIL SAMPLES - 1996
BACKGROUND SOIL CONCENTRATIONSCHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINADELTA PROJECT NO. E095-080-D.0010Summary of Background Statisticsmg/kgAl Arsenic Barium Cd Chloride Cr Cobalt Copper Mg Mn Lead Hg Sb Zinc Silver NitrogenMean (B02-B06)16,224 0.85 101 0.97 12.92 24 27.86 27.92 1,268 764 9.44 0.07 6.48 26 1.30 2.00Std Dev (B02-B06)5,468 0.28 51 0.32 0.76 22 20.91 21.74 1,267 697 6.74 0.03 0.38 12 0.07 2.78Background (B02-B06)27,159 1.41 203 1.61 14.44 67 69.68 71.41 3,802 2,158 22.92 0.14 7.23 49 1.44 7.56Mean (B07-B09)15,324 0.84 139 1.28 44.76 54 42.21 31.36 2,335 1,441 9.98 0.07 6.68 338 1.33 10.65Std Dev (B07-B09)15,988 0.29 158 0.72 56.85 38 69.09 24.41 1,605 2,637 8.37 0.01 0.43 424 0.08 12.57Background (B07-B09)47,299 1.42 456 2.71 158.46 130 180.39 80.18 5,545 6,714 26.71 0.10 7.55 1,186 1.50 35.79
BACKGROUND SOIL CONCENTRATIONSSite Depth Date(ft)SSL-Soil Screening LevelsB-02 0.5 12/02/96 11,000 0.94 120 1.1 < 12 68 65 18 410 2,600 26 < 0.062 < 6.2 31 < 1.3 6.73B-02 1.5 12/02/96 12,000 < 0.63 60 1.2 < 13 55 50 14 370 1,300 15 0.070 < 6.3 22 < 1.3 < 0.63B-02 2.5 12/02/96 12,000 1.10 72 1.1 < 13 74 69 15 360 2,100 19 0.093 < 6.3 22 < 1.3 < 0.63B-02 3.5 12/02/96 11,000 < 0.62 31 0.82 < 12 34 22 13 300 640 15 < 0.062 < 6.2 16 < 1.3 < 0.62B-02 4.5 12/02/96 13,000 < 0.63 51 1.2 < 13 79 56 18 410 1,500 17 < 0.063 < 6.3 25 < 1.3 < 0.63B-03 0.5 12/02/96 9,900 0.84 150 0.82 < 12 23 52 22 530 2,000 22 0.071 < 6.1 27 < 1.2 4.91B-03 1.5 12/02/96 13,000 < 0.67 64 1.3 < 13 28 34 38 540 670 6.0 < 0.067 < 6.7 20 < 1.3 < 0.67B-03 2.5 12/02/96 12,000 < 0.65 63 1.1 < 13 19 21 40 570 510 4.4 < 0.065 < 6.5 18 < 1.3 < 0.65B-03 3.5 12/02/96 15,000 < 0.65 78 1.4 < 13 16 41 52 810 790 4.1 < 0.065 < 6.5 22 < 1.3 < 0.65B-03 4.5 12/02/96 15,000 < 0.64 87 1.1 < 13 12 49 52 900 810 3.3 < 0.064 < 6.4 21 < 1.3 < 0.63B-04 0.5 12/02/96 11,000 1.00 100 0.81 < 12 23 30 14 420 890 15 < 0.062 < 6.2 17 < 1.3 < 12.5B-04 1.5 12/02/96 17,000 0.76 160 0.89 < 13 19 11 28 580 290 9.2 < 0.065 < 6.5 16 < 1.3 < 0.65B-04 2.5 12/02/96 27,000 < 0.67 200 0.76 < 13 11 5.8 37 800 84 6.3 < 0.067 < 6.7 14 < 1.3 < 0.67B-04 3.5 12/02/96 18,000 1.60 230 < 0.63 < 13 21 9.9 40 680 180 8.3 < 0.063 < 6.3 18 < 1.3 < 0.63B-04 4.5 12/02/96 25,000 < 0.68 200 0.74 < 14 14 4.1 98 840 86 9.3 < 0.068 < 6.8 18 < 1.4 < 0.68B-05 0.5 12/02/96 6,700 1.20 110 < 0.61 < 12 12 4.7 4.7 290 1,600 8.7 < 0.061 < 6.1 15 < 1.2 4.39B-05 1.5 12/02/96 16,000 1.00 100 < 0.64 < 13 12 5.1 6.7 1,100 210 5.3 < 0.064 < 6.4 23 < 1.3 1.61B-05 2.5 12/02/96 18,000 0.62 76 < 0.62 < 12 7.6 2.8 6.2 1,800 120 4.5 < 0.094 < 6.2 34 < 1.2 4.42B-05 3.5 12/02/96 15,000 0.68 75 < 0.6 < 12 9.5 2.6 5.3 2,200 180 5.7 < 0.22 < 6.0 42 < 1.2 3.17B-05 4.5 12/02/96 15,000 < 0.59 76 < 0.59 < 12 4.5 8.6 5.2 1,700 560 16 < 0.059 < 5.9 67 < 1.2 1.10B-06 0.5 12/03/96 22,000 < 0.70 58 1.8 < 14 19 18 22 1,200 390 5.3 < 0.07 < 7.0 21 < 1.4 < 0.7B-06 1.5 12/03/96 21,000 < 0.71 55 1.5 < 14 10 28 28 2,000 360 3.4 < 0.071 < 7.1 26 < 1.4 < 0.71B-06 2.5 12/03/96 25,000 1.30 98 1.1 < 14 9.6 45 33 4,000 430 2.7 < 0.072 < 7.2 35 < 1.4 < 0.72B-06 3.5 12/03/96 25,000 1.00 100 1.1 < 14 8.2 26 63 4,300 220 2.5 < 0.072 < 7.2 41 < 1.4 < 0.72B-06 4.5 12/03/96 20,000 1.40 110 0.72 < 14 5.4 36 25 4,600 590 2.0 < 0.069 < 6.9 37 < 1.4 < 0.69B-07 0.5 12/03/96 14,000 < 0.62 150 1.0 < 12 92 49 34 3,100 5,000 8.5 < 0.062 < 6.2 32 < 1.2 7.27B-07 1.5 12/03/96 18,000 < 0.64 430 1.5 < 14 110 230 40 900 8,700 19 0.11 < 6.3 15 < 1.3 6.85B-07 2.5 12/03/96 66,000 < 0.70 270 1.7 < 14 96 63 75 2,900 790 3.6 0.091 < 7.0 22 < 1.4 2.78B-07 3.5 12/03/96 28,000 < 0.70 130 1.7 < 14 120 9.4 55 2,500 83 3.5 0.078 < 7.0 15 < 1.4 3.38B-07 4.5 12/03/96 40,000 < 0.71 220 2.7 < 14 98 19 90 2,500 360 1.9 0.076 < 7.1 23 < 1.4 0.57B-08 0.5 12/03/96 7,900 1.40 81 < 0.7 66 35 26 17 2,100 960 9.2 0.087 < 7.0 25 < 1.4 18.3B-08 1.5 12/03/96 9,400 < 0.67 80 < 0.67 91 50 35 17 2,800 450 6.2 < 0.067 < 6.7 13 < 1.3 26.3B-08 2.5 12/03/96 9,800 < 0.71 37 < 0.71 220 51 5.5 22 4,400 34 6.5 < 0.071 < 7.1 14 < 1.4 1.93B-08 3.5 12/03/96 8,100 < 0.76 30 1.2 120 41 7.4 20 5,000 63 4.8 < 0.076 < 7.6 11 < 1.5 43.8B-08 4.5 12/03/96 10,000 < 0.69 32 0.73 86 62 7.4 20 5,500 29 6.1 < 0.069 < 6.9 13 < 1.4 34.3B-09 0.5 12/03/96 10,000 0.81 590 3.1 < 12 36 210 34 760 6,600 14 < 0.06 < 6.0 680 < 1.2 < 5.96B-09 0.5 12/03/96 13,000 1.10 81 1.3 < 13 67 23 56 3,500 220 1.9 < 0.067 < 6.7 680 < 1.3 < 6.72B-09 1.5 12/03/96 6,000 1.50 83 1.5 < 12 11 9.6 11 820 390 4.4 < 0.06 < 6.0 1,200 < 1.2 < 6.04B-09 2.5 12/03/96 4,600 0.74 22 < 0.65 < 13 8.9 3.8 8.9 590 140 17 < 0.065 < 6.5 710 < 1.3 < 3.26B-09 3.5 12/03/96 5,200 < 0.66 33 0.75 31 12 3 12 830 130 34 < 0.066 < 6.6 500 < 1.3 < 0.66B-09 3.5 12/03/96 4,600 < 0.65 54 0.74 16 9.7 4.5 7.3 580 200 10 < 0.065 < 6.5 700 < 1.3 < 6.53B-09 4.5 12/03/96 5,900 1.30 46 1.1 < 13 12 12 14 910 350 19 < 0.064 < 6.4 1,100 < 1.3 < 6.44B-10 0.5 12/03/96 9,100 49 180 0.64 < 11 14 13 41 7,500 500 11 < 0.055 230 < 5.49B-10 1.5 12/03/96 10,000 190 42 < 0.65 < 13 8.9 2.5 8.4 1,100 130 6.2 < 0.065 40 < 0.65B-10 2.5 12/03/96 17,000 4.90 150 1.20 < 14 11 38 48 2,500 1,800 20 < 0.071 150 1.97B-10 3.5 12/03/96 19,000 0.92 100 < 0.60 < 12 1.8 25 44 3,600 630 0.76 < 0.06 33 < 6.00B-10 4.5 12/03/96 11,000 < 0.58 69 < 0.58 < 12 1.2 20 44 3,600 470 < 0.35 < -0.058 30 < 5.79Arsenic(mg/kg)26.2Aluminum(mg/kg)848Cd(mg/kg)2.72Chloride(mg/kg)Barium(mg/kg)Cr(mg/kg)27.2 704Cobalt(mg/kg)Copper(mg/kg)Mg(mg/kg)Lead(mg/kg)65.2 270Mn(mg/kg)Mercury(mg/kg)0.0154 1,100Sb(mg/kg)Silver(mg/kg)5.42Zinc(mg/kg)0.223N-Nitrate(mg/kg)
SOIL SAMPLES 1996-1997
PRODUCTION AREA
SWMU-1, 44, AND 45
Samples Collected from SWMU 1 BoringsSample ID: S1GP111001 S1GP111002 S1GP111003 S1GP111004Sample Depth (ft bgs): 4 8 12 16Site-SpecificSample Date (mm/dd/yy): 7/23/2001 7/23/2001 7/23/2001 7/23/2001BackgroundSample Time (hh:mm): 13:45 13:48 13:51 13:57Concentrations (1)ParametersAluminum (mg/kg)19,0008,600NS7,40026,196Antimony (mg/kg)<0.78<0.47NS<0.517.4Arsenic (mg/kg)2.11.1<0.700.891.37Barium (mg/kg)801309158241Cadmium (mg/kg)<0.16<0.094<0.14<0.101.55Calcium (mg/kg)1,9001,7004,2008,700NLChromium (mg/kg)6380575.070.2Cobalt (mg/kg)4.258101476.1Copper (mg/kg)2022167.466.9Lead (mg/kg)3.89.23.4<0.5123.2Magnesium (mg/kg)2,2001,1003,9006,1004,081Manganese (mg/kg)1301,5004204903,013Mercury (mg/kg)0.0150.0120.021<0.00360.149Molybdenum (mg/kg)<0.78<0.47<0.70<0.51NLSodium (mg/kg)200<94<140100NLZinc (mg/kg)18410287748Chloride (mg/kg)< 13571902715Nitrate (mg/kg)2.61.81.81.68.76Notes:(1) Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area. These background levels are North Carolina state accepted standards for the CSI site.NL = Not ListedNS = Not SampledBoldface indicates above Site-Specific Background ConcentrationHARRISBURG, NORTH CAROLINADELTA PROJECT NO. E095-080-D.0010TABLE 7SWMU 1 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.Revised: 12/18/2018 - 10:00 AM
Samples Collected from SWMU 44 BoringsSample ID: S44GP121001 S44GP121002 S44GP121003Sample Depth (ft bgs): 4 8 12Site-SpecificSample Date (mm/dd/yy): 7/23/2001 7/23/2001 7/23/2001BackgroundSample Time (hh:mm): 13:35 13:34 13:46Concentrations (1)ParametersAluminum (mg/kg)12,00014,0005,40026,196Antimony (mg/kg)<0.69<0.50<0.667.4Arsenic (mg/kg)1.3681.11.37Barium (mg/kg)4811031241Cadmium (mg/kg)<0.14<0.10<0.131.55Calcium (mg/kg)3,6003,1003,700NLChromium (mg/kg)751405.970.2Cobalt (mg/kg)11399.976.1Copper (mg/kg)231,1003066.9Lead (mg/kg)6.062<0.6623.2Magnesium (mg/kg)2,0002,3005,4004,081Manganese (mg/kg)3006001003,013Mercury (mg/kg)0.0190.029<0.00380.149Molybdenum (mg/kg)<0.69< 0.5<0.66NLSodium (mg/kg)<140350520NLZinc (mg/kg)1301,6002848Chloride (mg/kg)14852015Nitrate (mg/kg)3.49.0158.76Notes:(1) Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area. These background levels are North Carolina state accepted standards for the CSI site.NL = Not ListedBoldface indicates above Site-Specific Background ConcentrationHARRISBURG, NORTH CAROLINADELTA PROJECT NO. E095-080-D.0010TABLE 8SWMU 44 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.Revised: 12/18/2018 - 10:00 AM
Samples Collected from SWMU 45 BoringsSample ID: S45B011001 S45B011002 S45B011003 S45B021001 S45B021002 S45B021003Sample Depth (ft bgs): 0.5 1.5 2.5 0.5 1.5 2.5Site-SpecificSample Date (mm/dd/yy): 6/18/2001 6/18/2001 6/18/2001 6/18/2001 6/18/2001 6/18/2001BackgroundSample Time (hh:mm): 11:12 11:32 11:50 10:25 10:40 10:52Concentrations (1)ParametersAluminum (mg/kg)21,00036,00039,00019,00020,00027,00026,196Antimony (mg/kg)< 0.631.30.850.51< 0.55< 0.617.4Arsenic (mg/kg)5.32.82.8325.63.01.37Barium (mg/kg)16063731409360241Cadmium (mg/kg)< 0.13< 0.13< 0.12< 0.094< 0.11< 0.121.55Chromium (mg/kg)85181543792070.2Cobalt (mg/kg)355.84.741116.076.1Copper (mg/kg)33181899281266.9Lead (mg/kg)7.94.74.6246.66.323.2Magnesium (mg/kg)2,6001,7001,6002,4002,1003,1004,081Manganese (mg/kg)1,7003702701,5006602703,013Mercury (mg/kg)0.0310.060.0930.0690.0530.0840.149Molybdenum (mg/kg)< 0.63< 0.63< 0.60< 0.470.61< 0.61NLSodium (mg/kg)190160< 120< 94< 110< 120NLZinc (mg/kg)3304243650924148Chloride (mg/kg)4148881207016015Nitrate (mg/kg)77.57.6< 1.3< 1.37.68.76Notes:(1) Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area. These background levels are North Carolina state accepted standards for the CSI site.NL = Not ListedBoldface indicates above Site-Specific Background ConcentrationTABLE 9DELTA PROJECT NO. E095-080-D.0010SWMU 45 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINARevised: 12/18/2018 - 10:00 AM
TABLE 9DELTA PROJECT NO. E095-080-D.0010SWMU 45 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINASamples Collected from SWMU 45 BoringsSample ID: S45B031001 S45B031002 S45B031003 S45GP191001 S45GP201001 S45GP201002 S45GP201003Sample Depth (ft bgs): 0.5 1.5 2.5 8.0 0.5 2.0 4.0Site-SpecificSample Date (mm/dd/yy): 6/18/2001 6/18/2001 6/18/2001 5/28/2002 5/28/2002 5/28/2002 5/28/2002BackgroundSample Time (hh:mm): 9:40 9:45 9:55 11:29 11:39 11:41 11:44Concentrations (1)ParametersAluminum (mg/kg)17,00021,00021,000NANANANA26,196Antimony (mg/kg)< 0.550.78< 0.56NANANANA7.4Arsenic (mg/kg)2.02.92.5<0.500.922.12.71.37Barium (mg/kg)315772NANANANA241Cadmium (mg/kg)< 0.11< 0.10< 0.11NANANANA1.55Chromium (mg/kg)17227.1275.7316870.2Cobalt (mg/kg)7.7213.8NANANANA76.1Copper (mg/kg)148.322NANANANA66.9Lead (mg/kg)6.17.95.4NANANANA23.2Magnesium (mg/kg)1,0001,4001,500NANANANA4,081Manganese (mg/kg)260470300NANANANA3,013Mercury (mg/kg)0.0530.0560.10NANANANA0.149Molybdenum (mg/kg)< 0.55< 0.52< 0.56NANANANANLSodium (mg/kg)< 110< 100< 110NANANANANLZinc (mg/kg)4144498843343448Chloride (mg/kg)6492100NANANANA15Nitrate (mg/kg)7.2< 1.3< 1.3NANANANA8.76Notes:(1) Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area. These background levels are North Carolina state accepted standards for the CSI site.NL = Not ListedNA = Not AnalyzedBoldface indicates above Site-Specific Background ConcentrationRevised: 12/18/2018 - 10:00 AM
SWMU-18
TABLE 13SWMU 18 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINADELTA PROJECT NO. E095-080-D.0010Samples Collected from SWMU 18 BoringsSample ID:S18GP071001 S18GP071002 S18GP081001S18GP081002 S18GP081003Sample Depth (ft bgs):484811RSite-SpecificSample Date (mm/dd/yy):7/23/20017/23/20017/23/20017/23/20017/23/2001iBackgroundSample Time (hh:mm):8:308:358:458:488:51PConcentrations (1)ParametersArsenic (mg/kg)2.0<0.966.50.82 <0.51 1.37Barium (mg/kg)31 150 47100 55 241Cadmium (mg/kg)<0.14 <0.19 <0.13<0.11 <0.10 1.55Chromium (mg/kg)9.8140198219 70.2Lead (mg/kg)3.9 1.5 4.7<0.56 <0.51 23.2Selenium (mg/kg)<0.70 <0.96 <0.66<0.56 <0.51 NLSilver (mg/kg)<0.28 <0.38 <0.26<0.22 <0.21 1.5Mercury (mg/kg)0.023 0.014 0.019<0.005 <0.0047 0.149PCBs (ug/kg)ND ND NDND ND NLNotes:(1) Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area. These background levels are North Carolina state accepted standards for the CSI site.SVOCs were not detected in any of the samples listed above.ND = Not DetectedNL = Not ListedNA = Not AnalyzedBoldface indicates above Site-Specific Background ConcentrationRevised: 12/18/2018 - 11:02 AM
TABLE 13SWMU 18 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINADELTA PROJECT NO. E095-080-D.0010Samples Collected from SWMU 18 BoringsSample ID: S18GP091001 S18GP091002 S18GP101001 S18GP101002 S18GP101003Sample Depth (ft bgs):4748 12RSite-SpecificSample Date (mm/dd/yy): 7/23/2001 7/23/2001 7/23/2001 7/23/2001 7/23/2001iBackgroundSample Time (hh:mm): 8:30 8:38 8:48 8:54 9:01PConcentrations (1)ParametersArsenic (mg/kg)1.1< 1.01.8<0.70<0.511.37Barium (mg/kg)43160329142241Cadmium (mg/kg)<0.14<0.20<0.11<0.14<0.101.55Chromium (mg/kg)8.3120111504170.2Lead (mg/kg)3.1<1.05.74.4<0.5123.2Selenium (mg/kg)<0.71<1.0<0.57<0.70<0.51NLSilver (mg/kg)<0.28<0.40<0.23<0.28<0.201.5Mercury (mg/kg)0.0090.0140.0130.019<0.00370.149PCBs (ug/kg)NDNDNDNDNDNLNotes:(1) Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area. These background levels are North Carolina state accepted standards for the CSI site.SVOCs were not detected in any of the samples listed above.ND = Not DetectedNL = Not ListedNA = Not AnalyzedConcentrations in italics indicates above Region 9 Industrial Risk Based PRGsBoldface indicates above Site-Specific Background ConcentrationRevised: 12/18/2018 - 11:02 AM
TABLE 13SWMU 18 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINADELTA PROJECT NO. E095-080-D.0010Samples Collected from SWMU 18 BoringsSample ID: S18GP141001 S18GP141002 S18GP131001 S18GP131002Sample Depth (ft bgs): 4.0 8.0 4.0 8.0Site-SpecificSample Date (mm/dd/yy): 5/28/2002 5/28/2002 5/28/2002 5/28/2002BackgroundSample Time (hh:mm): 11:56 11:58 12:05 12:07Concentrations (1)ParametersArsenic (mg/kg)8.62.21.81.71.37Barium (mg/kg)NANANANA241Cadmium (mg/kg)NANANANA1.55Chromium (mg/kg)25106.115070.2Lead (mg/kg)NANANANA23.2Selenium (mg/kg)NANANANANLSilver (mg/kg)NANANANA1.5Mercury (mg/kg)NANANANA0.149PCBs (ug/kg)NANANANANLNotes:(1) EPA Region 9 Industrial Risk-Based PRGs taken from North Carolina Hazardous Waste Section (HWS) Target Remediation Guidelines and Treatment Standards (Table 2).(2) Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area. These background levels are North Carolina state accepted standards for the CSI site.SVOCs were not detected in any of the samples listed above.ND = Not DetectedNL = Not ListedNA = Not AnalyzedConcentrations in italics indicates above Region 9 Industrial Risk Based PRGsConcentrations in boldface indicates above Site-Specific Background ConcentrationRevised: 12/18/2018 - 11:02 AM
SWMU-33 & 37
Samples Collected from SWMU 33 BoringsSample ID:S33B011001 S33B011002 S33B011003 S33B021001 S33B021002 S33B021003Sample Depth (ft bgs):34.560.524Site-SpecificSample Date (mm/dd/yy): 6/21/20016/21/20016/21/20016/21/20016/21/20016/21/2001BackgroundSample Time (hh:mm):10:0010:1510:309:009:159:30Concentrations (1)ParametersArsenic (mg/kg)2.4 2.61.015 1.4<0.601.37Chromium (mg/kg) 37 35 2015019 1170.2Cobalt (mg/kg) 26 41 47 56 58 1576.1Lead (mg/kg) 0.68 1.6 <0.72 5.8 <0.47 <0.6023.2Mercury (mg/kg) 0.015 <0.0045 <0.0038 0.030 <0.0037 0.00720.149Nitrate (mg/kg) 7.3 <1.1 6.4 6.8 <1.1 <1.28.76Nitrogen-Ammonia (mg/kg) 36 19 8.8 2.7 3.7 8.2NLEthylene Glycol (mg/kg) <0.9 <0.9 <0.9 <0.9 <0.9 <0.92.8Notes:(1)Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area.These background levels are North Carolina state accepted standards for the CSI site.SVOCs were not detected in any of the samples listed above.NL = Not ListedNA = Not AnalyzedBoldface indicates above Site-Specific Background ConcentrationTABLE 11DELTA PROJECT NO. E095-080-D.0010SWMU 33 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINARevised: 12/18/2018 - 10:56 AM
TABLE 11DELTA PROJECT NO. E095-080-D.0010SWMU 33 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINASamples Collected from SWMU 33 BoringsSample ID:S33GP181001 S33B031001 S33B031002 S33B031003Sample Depth (ft bgs):6.50.52.04.0Site-SpecificSample Date (mm/dd/yy): 5/28/20025/28/20025/28/20025/28/2002BackgroundSample Time (hh:mm):11:0013:0013:0513:26Concentrations (2)ParametersArsenic (mg/kg) <0.652.2<0.632.31.37Chromium (mg/kg)210 480 3305970.2Cobalt (mg/kg) NA NA NA NA76.1Lead (mg/kg) NA NA NA NA23.2Mercury (mg/kg) NA NA NA NA0.149Nitrate (mg/kg) NA NA NA NA8.76Nitrogen-Ammonia (mg/kg) NA NA NA NANLEthylene Glycol (mg/kg) NA NA NA NA2.8Notes:(1) EPA Region 9 Industrial Risk-Based PRGs taken from North Carolina Hazardous Waste Section (HWS) Target Remediation Guidelines and Treatment Standards (Table 2).(2) Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area. These background levels are North Carolina state accepted standards for the CSI site.SVOCs were not detected in any of the samples listed above.NL = Not ListedNA = Not Analyzed Concentrations in italics indicates above Region 9 Industrial Risk Based PRGsConcentrations in boldface indicates above North Carolina StandardRevised: 12/18/2018 - 10:56 AM
Samples Collected from SWMU 37 BoringsSample ID:S37B011001 S37B011002 S37B011003 S37B021001 S37B021002S37B021003RSample Depth (ft bgs):0.5240.524Site-SpecificSample Date (mm/dd/yy): 6/19/20016/19/20016/19/20016/19/20016/19/20017/23/2001BackgroundSample Time (hh:mm):9:4510:0010:1511:0011:1510:55Concentrations (1)ParametersArsenic (mg/kg)8.3 2.3 1.9 2.0 16<0.671.37Chromium (mg/kg)210 220 1505.095 26070.2Cobalt (mg/kg)100 150 1704.4 6525076.1Lead (mg/kg)3718 3.1 1.8 22 7.523.2Mercury (mg/kg) 0.049 0.075 0.0052 0.0039 0.025 <0.00450.149Nitrate (mg/kg) 7.4 <1.2 7.7 <1.1 6.5 <1.28.76Nitrogen-Ammonia (mg/kg) 19 9.4 17 17 11 27NLEthylene Glycol (m/kg) < 31 < 31 < 38 < 29 < 31 <0.92.8Notes:(1)Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area.These background levels are North Carolina state accepted standards for the CSI site.SVOCs were not detected in any of the samples listed above.NL = Not ListedBoldface indicates above Site-Specific Background ConcentrationTABLE 12DELTA PROJECT NO. E095-080-D.0010SWMU 37 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINARevised: 12/18/2018 - 10:56 AM
TABLE 12DELTA PROJECT NO. E095-080-D.0010SWMU 37 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINASamples Collected from SWMU 37 BoringsSample ID:S37B031001 S37B031002 S37B031003R S37B041001 S37B041002S37B041003Sample Depth (ft bgs):34.560.524Site-SpecificSample Date (mm/dd/yy): 6/20/20016/20/20017/23/20016/20/20016/20/20016/20/2001BackgroundSample Time (hh:mm):9:009:1511:0510:1510:3010:45Concentrations (1)ParametersArsenic (mg/kg) 0.71 0.83 <0.72 <0.62 <0.57 0.731.37Chromium (mg/kg) 3.1 5.92003.8 3.0 3.670.2Cobalt (mg/kg) 2.1 2.41402.4 2.6 5.076.1Lead (mg/kg) 0.83 0.94 2.9 <0.62 <0.57 <0.7223.2Mercury (mg/kg)0.150.068 0.0071 0.030 0.012 0.0110.149Nitrate (mg/kg) 7.0 <1.4 2.3 7.2 <1.1 7.48.76Nitrogen-Ammonia (mg/kg) 2.5 2.5 31 14 8.3 4.6NLEthylene Glycol (mg/kg) < 35 < 36 < 0.9 < 29 < 29 < 322.8Notes:(1)Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area.These background levels are North Carolina state accepted standards for the CSI site.SVOCs were not detected in any of the samples listed above.NL = Not ListedBoldface indicates above Site-Specific Background ConcentrationRevised: 12/18/2018 - 10:56 AM
TABLE 12DELTA PROJECT NO. E095-080-D.0010SWMU 37 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINASamples Collected from SWMU 37 BoringsSample ID:S37B051001 S37B051002 S37B051003 S37B061001 S37B061002S37B061003Sample Depth (ft bgs):0.502434.56Site-SpecificSample Date (mm/dd/yy): 6/19/20016/19/20016/19/20016/20/20016/20/20016/20/2001BackgroundSample Time (hh:mm):13:0013:1013:3014:4515:2015:50Concentrations (1)ParametersArsenic (mg/kg)6.70.63 1.2 <0.94 <0.60 <0.701.37Chromium (mg/kg)140 14068 7.5 4.9 4.870.2Cobalt (mg/kg) 41 7.6 43 3.3 2.6 3.276.1Lead (mg/kg) 14 2.9 1.8 <0.94 <0.60 <0.7023.2Mercury (mg/kg) 0.023 0.12 0.024 0.10 0.031 0.0200.149Nitrate (mg/kg)91<1.58.08.98.68.88.76Nitrogen-Ammonia (mg/kg) 6.99.1378.38.82.9NLEthylene Glycol (mg/kg)< 28< 38< 38< 40< 36< 372.8Notes:(1)Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area.These background levels are North Carolina state accepted standards for the CSI site.SVOCs were not detected in any of the samples listed above.NL = Not ListedBoldface indicates above Site-Specific Background ConcentrationRevised: 12/18/2018 - 10:56 AM
TABLE 12DELTA PROJECT NO. E095-080-D.0010SWMU 37 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINASamples Collected from SWMU 37 BoringsSample ID:S37B071001 S37B071002 S37B071003 S37B081001 S37B081002R S37B081003RSample Depth (ft bgs):0.52434.56Site-SpecificSample Date (mm/dd/yy): 6/20/20016/20/20016/20/20016/20/20017/23/20017/23/2001BackgroundSample Time (hh:mm):11:1511:4511:5513:5010:4510:50Concentrations (1)ParametersArsenic (mg/kg) <0.62 <0.59 <0.52 <0.47 <0.61 0.841.37Chromium (mg/kg) 4.1 4.9 4.4 3.31205270.2Cobalt (mg/kg) 4.0 4.0 3.4 2.61605876.1Lead (mg/kg) 0.84 1.6 1.1 0.84 <0.61 <0.7723.2Mercury (mg/kg) 0.0480.310.056 <0.0039 0.019 <0.00630.149Nitrate (mg/kg) 6.3 6.5 7.9 <1.1 2.4 5.08.76Nitrogen-Ammonia (mg/kg) 5.3 6.7 42 6.4 22 58.0NLEthylene Glycol (mg/kg) < 33 < 32 < 31 < 29 <0.9 <0.92.8Notes:(1) Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area. These background levels are North Carolina state accepted standards for the CSI site.SVOCs were not detected in any of the samples listed above.NL = Not ListedBoldface indicates above Site-Specific Background ConcentrationRevised: 12/18/2018 - 10:56 AM
TABLE 12DELTA PROJECT NO. E095-080-D.0010SWMU 37 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINASamples Collected from SWMU 37 BoringsSample ID:S37B091001 S37B091002R S37B091003R S37B101001 S37B101002S37B101003Sample Depth (ft bgs):0.5240.524Site-SpecificSample Date (mm/dd/yy): 6/19/20017/23/20017/23/20016/19/20016/19/20016/19/2001BackgroundSample Time (hh:mm):14:4510:4711:0114:0014:1514:30Concentrations (1)ParametersArsenic (mg/kg)1.4<0.59 0.721.9<0.80 1.11.37Chromium (mg/kg)250250 91220 1202570.2Cobalt (mg/kg)10027 261207.0 5676.1Lead (mg/kg)268.8 0.736512 <0.5723.2Mercury (mg/kg) 0.0470.039 <0.00500.13 0.088 <0.00370.149Nitrate (mg/kg) 6.42.0 <1.3<1.1 8.3 <1.28.76Nitrogen-Ammonia (mg/kg) 126.4 104.5 1.7 6NLEthylene Glycol (mg/kg) < 33<0.9 <0.9< 30 < 37 < 292.8Notes:(1)Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area.These background levels are North Carolina state accepted standards for the CSI site.SVOCs were not detected in any of the samples listed above.NL = Not ListedBoldface indicates above Site-Specific Background ConcentrationRevised: 12/18/2018 - 10:56 AM
TABLE 12DELTA PROJECT NO. E095-080-D.0010SWMU 37 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINASamples Collected from SWMU 37 BoringsSample ID: S37GP171001 S37GP171002 S37GP171003 S37GP161001 S37GP151001Sample Depth (ft bgs): 0.5 2.0 4.0 8.0 8.0Site-SpecificSample Date (mm/dd/yy): 5/28/2002 5/28/2002 5/28/2002 5/28/2002 5/28/2002BackgroundSample Time (hh:mm): 10:05 10:07 10:10 10:21 10:41Concentrations (2)ParametersArsenic (mg/kg)<0.54<0.63<0.55<0.561.21.37Chromium (mg/kg)24024022013012070.2Cobalt (mg/kg)NANANANANA76.1Lead (mg/kg)NANANANANA23.2Mercury (mg/kg)NANANANANA0.149Nitrate (mg/kg)NANANANANA8.76Nitrogen-Ammonia (mg/kg) NANANANANANLEthylene Glycol (mg/kg)NANANANANA2.8Notes:(1)EPA Region 9 Industrial Risk-Based PRGs taken from North Carolina Hazardous Waste Section (HWS) TargetRemediation Guidelines and Treatment Standards (Table 2).(2)Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area.These background levels are North Carolina state accepted standards for the CSI site.SVOCs were not detected in any of the samples listed above.NL = Not ListedNA = Not AnalyzedConcentrations in italics indicates above Region 9 Industrial Risk Based PRGsConcentrations in boldface indicates above North Carolina StandardRevised: 12/18/2018 - 10:56 AM
SWMU-60, 61, & 62
Samples Collected from SWMU 39 BoringsSample ID:S39GP051001 S39GP051002 S39GP061001S39GP061002Sample Depth (ft bgs):4848Site-SpecificSample Date (mm/dd/yy):7/23/2001 7/23/2001 7/23/20017/23/2001BackgroundSample Time (hh:mm):9:49 10:00 9:379:52Concentrations (1)ParametersArsenic (mg/kg)<0.77 <0.50 <0.630.691.37Barium (mg/kg)120 59 11076241Cadmium (mg/kg)<0.15 <0.10 <0.13<0.111.55Chromium (mg/kg)12011 421170.2Lead (mg/kg)<0.77 <0.50 <0.63<0.5523.2Selenium (mg/kg)<0.77 <0.50 <0.63<0.55 NLSilver (mg/kg)<0.31 <0.20 <0.25<0.22 1.5Mercury (mg/kg)0.017 <0.0045 <0.0049<0.00410.149PCBs (ug/kg)ND ND NDNDNLNotes:(1) Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area. These background levels are North Carolina state accepted standards for the CSI site.SVOCs were not detected in any of the samples listed above.VOCs were not detected in any of the samples listed above.NL = Not ListedBoldface indicates above Site-Specific ConcentrationTABLE 14DELTA PROJECT NO. E095-080-D.0010SWMU 39 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINARevised: 12/18/2018 - 11:35 AM
SWMU-58
Samples Collected from SWMU 58 BoringsSample ID: S58B011001 S58B011002 S58B011003 S58B021001 S58B021002Sample Depth (ft bgs): 0.5 1.5 2.5 0.5 1.5Site-SpecificSample Date (mm/dd/yy): 6/18/2001 6/18/2001 6/18/2001 6/18/2001 6/18/2001BackgroundSample Time (hh:mm): 17:06 17:13 17:27 15:53 16:00Concentrations (1)ParametersAluminum (mg/kg) 17,000 17,000 14,000 17,000 16,00026,196Antimony (mg/kg) < 0.55 < 0.54 0.51 < 0.91 < 0.557.4Arsenic (mg/kg)1.7 2.7 1.6 310 8.31.37Barium (mg/kg) 73 96 42 160 32241Cadmium (mg/kg) < 0.11 < 0.11 < 0.102.7< 0.111.55Chromium (mg/kg)130 100 89 330 11070.2Cobalt (mg/kg) 31 37 12 29 8.576.1Copper (mg/kg) 46480211,400 8666.9Lead (mg/kg) 17 21 5.759 3923.2Magnesium (mg/kg) 2,9004,1002,1006,7002,9004,081Manganese (mg/kg) 530 960 190 1,100 1003,013Mercury (mg/kg) 0.028 0.059 0.0260.240.0450.149Molybdenum (mg/kg) < 0.55 0.87 < 0.51 1.2 2.3NLSodium (mg/kg) < 110 < 110 < 100 < 180 110NLZinc (mg/kg)81 670255,000 1,30048Chloride (mg/kg)40 38 72 56 9915Nitrate (mg/kg)13 11 9.2 13 138.76Notes:(1) Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area. These background levels are North Carolina state accepted standards for the CSI site.NL = Not ListedBoldface indicates above Site-Specific Background ConcentrationTABLE 10DELTA PROJECT NO. E095-080-D.0010SWMU 58 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINARevised: 12/18/2018 - 10:54 AM
TABLE 10DELTA PROJECT NO. E095-080-D.0010SWMU 58 SOIL SAMPLING ANALYTICAL DATARCRA FACILITY INVESTIGATION (PHASE II)CHEMICAL SPECIALTIES, INC.HARRISBURG, NORTH CAROLINASamples Collected from SWMU 58 BoringsSample ID: S58B031001 S58B031002 S58B031003 S58B041001Sample Depth (ft bgs): 0.5 1.5 2.5 4.0Site-SpecificSample Date (mm/dd/yy): 6/18/2001 6/18/2001 6/18/2001 5/28/2002BackgroundSample Time (hh:mm): 15:15 15:27 15:32 13:55Concentrations (1)ParametersAluminum (mg/kg) 15,000 17,000 17,000 NA26,196Antimony (mg/kg) < 0.61 < 0.55 < 0.61 NA7.4Arsenic (mg/kg)3.11.11.5<0.551.37Barium (mg/kg) 43 30 32 NA241Cadmium (mg/kg) < 0.12 < 0.11 < 0.12 NA1.55Chromium (mg/kg)120 130 140 17070.2Cobalt (mg/kg) 15 8.9 10 NA76.1Copper (mg/kg) 24 25 27 NA66.9Lead (mg/kg) 8.3 4.8 5.5 NA23.2Magnesium (mg/kg) 2,300 3,300 3,600 NA4,081Manganese (mg/kg) 180 52 110 NA3,013Mercury (mg/kg) 0.023 0.036 0.048 NA0.149Molybdenum (mg/kg) 1.4 < 0.55 < 0.61 NANLSodium (mg/kg) < 120 150 < 120 NANLZinc (mg/kg)200 88328248Chloride (mg/kg)41 59 57NA15Nitrate (mg/kg) 8.2 7.5 8.1 NA8.76Notes:(1) Site-specific background concentrations reflect the concentration of naturally-occurring minerals in the area. These background levels are North Carolina state accepted standards for the CSI site.NL = Not ListedNA = Not AnalyzedBoldface indicates above Site-Specific Background StandardRevised: 12/18/2018 - 10:54 AM
SWMU-96

The business of sustainability

APPENDIX C HISTORICAL GROUNDWATER GAUGING DATA

APPENDIX C. GROUNDWATER ELEVATION DATADateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSLMW-1TOC: 575.23MW-2TOC: 553.75MW-3TOC: 544.53MW-4TOC: 544.56MW-5TOC: 543.36MW-6TOC: 541.2001/24/96 2.35 572.88 01/24/96 9.60 544.15 01/24/96 8.20 536.33 01/24/96 6.20 538.36 01/24/96 9.00 534.36 01/24/96 7.05 534.1504/09/96 2.35 572.88 04/09/96 14.80 538.95 04/09/96 8.00 536.53 04/09/96 6.75 537.81 04/09/96 9.40 533.96 04/09/96 7.92 533.2807/16/96 9.50 565.73 07/16/96 14.00 539.75 07/16/96 11.70 532.83 07/16/96 9.00 535.56 07/16/96 10.50 532.86 07/16/96 10.75 530.4510/16/96 9.90 565.33 10/16/96 12.90 540.85 10/16/96 11.75 532.78 10/16/96 7.50 537.06 10/16/96 10.00 533.36 10/16/96 9.25 531.9501/08/97 6.00 569.23 01/08/97 12.85 540.90 01/08/97 9.60 534.93 01/08/97 7.60 536.96 01/08/97 10.25 533.11 01/08/97 9.25 531.9504/09/97 3.60 571.63 04/09/97 11.80 541.95 04/09/97 9.80 534.73 04/09/97 7.30 537.26 04/09/97 9.90 533.46 04/09/97 9.40 531.8007/02/97 7.80 567.43 07/02/97 14.15 539.60 07/02/97 11.50 533.03 07/02/97 8.80 535.76 07/02/97 11.20 532.16 07/02/97 9.95 531.2510/08/97 11.30 563.93 10/08/97 15.10 538.65 10/08/97 12.05 532.48 10/08/97 8.85 535.71 10/08/97 10.55 532.81 10/08/97 10.10 531.1001/14/98 2.50 572.73 01/14/98 10.50 543.25 01/14/98 7.30 537.23 01/14/98 6.00 538.56 01/14/98 9.00 534.36 01/14/98 7.45 533.7504/07/98 2.80 572.43 04/07/98 11.50 542.25 04/07/98 8.45 536.08 04/07/98 7.70 536.86 04/07/98 9.30 534.06 04/07/98 8.50 532.7007/08/98 9.70 565.53 07/08/98 14.35 539.40 07/08/98 11.70 532.83 07/08/98 8.95 535.61 07/08/98 10.70 532.66 07/08/98 10.20 531.0010/15/98 12.05 563.18 10/15/98 14.80 538.95 10/15/98 12.50 532.03 10/15/98 8.90 535.66 10/15/98 10.80 532.56 10/15/98 10.30 530.9001/13/99 11.20 564.03 01/13/99 13.40 540.35 01/13/99 11.10 533.43 01/13/99 7.75 536.81 01/13/99 10.55 532.81 01/13/99 9.20 532.0004/20/99 5.60 569.63 04/20/99 13.90 539.85 04/20/99 9.40 535.13 04/20/99 7.90 536.66 04/20/99 10.80 532.56 04/20/99 9.90 531.3007/07/99 10.10 565.13 07/07/99 14.60 539.15 07/07/99 11.90 532.63 07/07/99 9.10 535.46 07/07/99 11.30 532.06 07/07/99 10.60 530.6010/06/99 13.60 561.63 10/06/99 12.60 541.15 10/06/99 12.60 531.93 10/06/99 9.35 535.21 10/06/99 11.10 532.26 10/06/99 10.60 530.6001/13/00 9.90 565.33 01/13/00 12.10 541.65 01/13/00 10.60 533.93 01/13/00 6.80 537.76 01/13/00 10.30 533.06 01/13/00 8.20 533.0004/11/00 4.30 570.93 04/11/00 11.30 542.45 04/11/00 8.30 536.23 04/11/00 6.70 537.86 04/11/00 10.00 533.36 04/11/00 8.70 532.5007/11/00 11.30 563.93 07/11/00 15.80 537.95 07/11/00 12.20 532.33 07/11/00 9.40 535.16 07/11/00 11.50 531.86 07/11/00 10.80 530.4010/03/00 11.60 563.63 10/03/00 13.00 540.75 10/03/00 11.25 533.28 10/03/00 6.80 537.76 10/03/00 9.30 534.06 10/03/00 10.50 530.7001/03/01 11.90 563.33 01/03/01 16.90 536.85 01/03/01 12.10 532.43 01/03/01 8.80 535.76 01/03/01 11.30 532.06 01/03/01 10.50 530.7004/11/01 5.50 569.73 04/11/01 13.60 540.15 04/11/01 8.25 536.28 04/11/01 6.50 538.06 04/11/01 9.80 533.56 04/11/01 8.50 532.7006/25/01 10.59 564.64 06/25/01 12.61 541.14 06/25/01 11.44 533.09 06/25/01 9.00 535.56 06/25/01 10.69 532.67 06/25/01 9.01 532.1907/02/01 10.97 564.26 07/02/01 15.44 538.31 07/02/01 11.67 532.86 07/02/01 9.55 535.01 07/02/01 11.52 531.84 07/02/01 10.82 530.3810/02/01 13.50 561.73 10/02/01 16.20 537.55 10/02/01 12.40 532.13 10/02/01 9.50 535.06 10/02/01 11.25 532.11 10/02/01 10.50 530.7001/10/02 13.10 562.13 01/10/02 15.90 537.85 01/10/02 12.40 532.13 01/10/02 9.60 534.96 01/10/02 11.10 532.26 01/10/02 10.00 531.2004/16/02 7.00 568.23 04/16/02 11.50 542.25 04/16/02 7.80 536.73 04/16/02 7.70 536.86 04/16/02 10.50 532.86 04/16/02 9.40 531.8007/09/02 13.80 561.43 07/09/02 17.80 535.95 07/09/02 12.65 531.88 07/09/02 11.10 533.46 07/09/02 12.00 531.36 07/09/02 11.30 529.9010/02/02 16.75 558.48 10/02/02 17.80 535.95 10/02/02 11.10 533.43 10/02/02 11.10 533.46 10/02/02 12.10 531.26 10/02/02 11.00 530.2007/15/03 3.81 571.42 07/15/03 12.31 541.44 07/15/03 8.59 535.94 07/15/03 7.01 537.55 07/15/03 8.45 534.91 07/15/03 8.45 532.7511/07/03 9.53 565.70 11/07/03 15.70 538.05 11/07/03 12.02 532.51 11/07/03 9.30 535.26 11/07/03 10.98 532.38 11/07/03 10.14 531.0606/10/04 10.40 564.83 06/10/04 16.63 537.12 06/09/04 12.14 532.39 06/09/04 9.80 534.76 06/09/04 11.67 531.69 06/09/04 10.85 530.3511/09/04 8.01 567.22 11/09/04 8.25 545.50 11/09/04 10.09 534.44 11/09/04 6.85 537.71 11/09/04 6.81 536.55 11/09/04 7.95 533.2504/11/05 2.93 572.30 04/12/05 11.80 541.95 04/12/05 7.83 536.70 10/04/05 10.11 534.45 04/12/05 8.70 534.66 04/12/05 8.00 533.2010/04/05 12.61 562.62 10/04/05 Dry Dry 10/04/05 12.58 531.95 04/12/05 6.90 537.66 10/04/05 11.35 532.01 10/04/05 10.50 530.7004/11/06 5.70 569.53 04/11/06 3.97 549.78 04/11/06 9.68 534.85 04/11/06 8.23 536.33 04/11/06 10.05 533.31 04/11/06 9.15 532.0510/03/06 10.99 564.24 10/03/06 14.92 538.83 10/03/06 10.80 533.73 10/03/06 7.59 536.97 10/03/06 9.29 534.07 10/03/06 8.85 532.3504/10/07 4.40 570.83 04/10/07 14.63 539.12 04/10/07 9.38 535.15 04/10/07 9.33 535.23 04/10/07 7.24 536.12 04/10/07 8.91 532.2911/01/07 15.45 559.78 11/01/07 17.78 535.97 11/01/07 12.87 531.66 11/01/07 11.05 533.51 11/01/07 12.38 530.98 11/01/07 10.61 530.5910/28/08 11.70 563.53 10/28/08 15.58 538.17 10/28/08 9.78 534.75 10/28/08 7.41 537.15 10/28/08 9.31 534.05 10/28/08 8.78 532.4210/07/09 13.20 562.03 10/07/09 16.78 536.97 10/07/09 12.42 532.11 10/07/09 9.44 535.12 10/07/09 10.79 532.57 10/07/09 9.83 531.3710/21/10 14.06 561.17 10/21/10 17.14 536.61 10/22/10 12.66 531.87 10/22/10 8.73 535.83 10/22/10 10.26 533.10 10/22/10 9.44 531.7610/26/11 13.96 561.27 10/27/11 14.94 538.81 10/27/11 11.55 532.98 10/27/11 6.92 537.64 10/27/11 9.35 534.01 10/27/11 8.66 532.5410/17/12 16.14 559.09 10/18/12 18.28 535.47 10/17/12 13.45 531.08 10/17/12 10.51 534.05 10/17/12 11.00 532.36 10/17/12 10.75 530.45ERMPage 1 of 312/18/2018
APPENDIX C. GROUNDWATER ELEVATION DATADateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSL10/02/13 12.18 563.05 10/03/13 16.43 537.32 10/03/13 12.35 532.18 10/03/13 8.65 535.91 10/02/13 9.28 534.08 10/02/13 9.64 531.5610/14/14 14.64 560.59 10/14/14 17.32 536.43 10/14/14 12.94 531.59 10/14/14 9.78 534.78 10/14/14 10.46 532.90 10/14/14 9.74 531.4610/20/15 15.46 559.77 10/21/15 15.49 538.26 10/21/15 11.80 532.73 10/21/15 7.95 536.61 10/21/15 9.43 533.93 10/20/15 8.75 532.4510/18/16 13.62 561.61 10/18/16 15.73 538.02 10/18/16 12.42 532.11 10/18/16 8.34 536.22 10/18/16 9.74 533.62 10/18/16 9.13 532.0711/13/17 13.48 561.75 11/13/17 16.28 537.47 11/13/17 12.55 531.98 11/13/17 9.33 535.23 11/13/17 10.21 533.15 11/13/17 10.06 531.1408/07/18 12.05 563.18 08/07/18 13.75 540.00 08/07/18 11.20 533.33 08/07/18 7.31 537.25 08/07/18 8.56 534.80 08/07/18 4.80 536.4011/19/18 4.95 570.28 11/19/18 10.72 543.03 11/19/18 5.97 538.56 11/19/18 5.97 538.59 11/19/18 6.75 536.61 11/19/18 7.14 534.06MW-7TOC: 553.64MW-8TOC: 552.53MW-9TOC: 552.69MW-10TOC: 552.91MW-11TOC: 545.90MW-04DTOC: 544.8108/28/01 8.66 544.98 08/28/01 8.40 544.13 08/28/01 9.29 543.40 08/28/01 10.74 542.17 06/14/02 14.86 531.04 08/28/01 10.11 534.7007/16/03 4.19 549.45 07/16/03 07/16/03 5.72 546.97 07/16/03 11.80 534.10 07/16/0306/10/04 8.36 545.28 11/07/03 6.61 545.92 06/10/04 9.42 543.27 11/07/03 9.50 543.41 06/09/04 14.79 531.11 06/09/0404/11/05 2.94 550.70 11/09/04 5.45 547.08 04/11/05 5.08 547.61 11/09/04 6.78 546.13 04/11/05 9.53 536.37 04/11/0504/11/06 4.26 549.38 10/04/05 8.92 543.61 04/11/06 6.17 546.52 10/04/05 11.33 541.58 04/11/06 11.89 534.01 04/11/0604/10/07 6.23 547.41 10/03/06 6.35 546.18 04/10/07 4.81 547.88 10/03/06 9.18 543.73 04/10/07 12.21 533.69 04/10/0711/01/07 8.68 544.96 11/01/07 8.81 543.72 11/01/07 9.79 542.90 10/31/07 11.41 541.50 11/01/07 16.44 529.46 11/01/0710/28/08 5.55 548.09 10/28/08 5.93 546.60 10/28/08 7.00 545.69 10/28/08 8.82 544.09 10/28/08 14.00 531.90 10/28/0810/07/09 7.41 546.23 10/07/09 7.48 545.05 10/07/09 8.46 544.23 10/07/09 9.94 542.97 10/07/09 15.13 530.77 10/07/0910/21/10 8.14 545.50 10/21/10 8.18 544.35 10/21/10 9.12 543.57 10/21/10 10.78 542.13 10/21/10 15.62 530.28 10/21/1010/26/11 5.25 548.39 10/26/11 5.48 547.05 10/26/11 6.59 546.10 10/26/11 8.33 544.58 10/27/11 15.81 530.09 10/27/1110/17/12 8.80 544.84 10/17/12 8.69 543.84 10/17/12 9.59 543.10 10/17/12 11.12 541.79 10/18/12 16.14 529.76 10/18/1210/02/13 7.27 546.37 10/02/13 7.36 545.17 10/02/13 8.38 544.31 10/02/13 10.05 542.86 10/03/13 13.90 532.00 10/03/1310/14/14 7.99 545.65 10/14/14 8.01 544.52 10/14/14 8.87 543.82 10/14/14 10.52 542.39 10/14/14 15.25 530.65 10/14/1410/20/15 6.36 547.28 10/20/15 6.48 546.05 10/20/15 7.43 545.26 10/21/15 9.20 543.71 10/21/15 14.69 531.21 10/21/1510/18/16 6.16 547.48 10/18/16 6.37 546.16 10/18/16 7.32 545.37 10/18/16 9.05 543.86 10/18/16 14.82 531.08 10/18/1611/13/17 6.69 546.95 11/13/17 6.87 545.66 11/13/17 7.87 544.82 11/13/17 9.55 543.36 11/13/17 14.62 531.28 11/13/17 12.05 532.7608/07/18 4.62 549.02 08/07/18 4.86 547.67 08/07/18 5.81 546.88 08/07/18 7.43 545.48 08/07/18 11.67 534.23 08/07/18 9.09 535.7211/19/18 2.93 550.71 11/19/18 3.59 548.94 11/19/18 4.53 548.16 11/19/18 6.05 546.86 11/19/18 7.80 538.10 11/19/18 11.08 533.73MW-5DTOC: 543.38MW-11DTOC: 545.17F-01DTOC: 577.40F-01STOC: 576.30F-02DTOC: 573.31F-02STOC: 573.2708/28/01 13.19 530.19 11/19/96 -- -- 11/19/96 5.95 571.45 11/22/96 8.76 567.54 06/25/01 -- -- 11/22/96 7.99 565.2811/13/17 11.92 532.55 08/07/18 -- -- 08/07/18 -- -- 08/07/18 -- -- 11/13/17 -- -- 11/13/17 -- --08/07/18 9.54 533.84 08/07/18 11.45 533.72 08/07/18 -- -- 08/07/18 -- -- 08/07/18 -- -- 08/07/18 4.86 568.4111/19/18 8.92 534.46 11/19/18 10.75 534.42 11/19/18 -- -- 11/19/18 -- -- 11/19/18 -- -- 11/19/18 3.44 569.83F-03DTOC: 563.43F-03STOC: 563.08F-04DTOC: 553.76F-05DTOC: 563.80F-05STOC: 564.50F-06CTOC: 570.3511/22/96 -- -- 11/22/96 4.92 558.16 11/22/96 -- -- 11/22/96 6.19 557.61 11/22/96 7.00 557.5008/07/18 -- -- 08/07/18 2.86 560.22 08/07/18 -- -- 08/07/18 27.29 536.51 08/07/18 -- -- 08/07/18 27.29 543.0611/19/18 -- -- 11/19/18 2.09 560.99 11/19/18 -- -- 11/19/18 -- -- 11/19/18 -- -- 11/19/18 0 0.00F-06DTOC: 570.93F-06STOC: 573.39F-07DTOC: 539.60F-08STOC: 556.60F-08DTOC: 556.48S-8STOC: 556.7111/22/96 -- -- 11/22/96 Dry -- 11/22/96 -- -- 11/22/96 8.19 548.41 11/22/96 -- -- 11/22/96 -- --08/07/18 25.49 530.99 08/07/18 Dry -- 08/07/18 -- -- 08/07/18 7.52 549.08 08/07/18 -- -- 08/07/18 -- --11/19/18 -- -- 11/19/18 Dry -- 11/19/18 -- -- 11/19/18 5.45 551.15 11/19/18 -- -- 11/19/18 -- --ERMPage 2 of 312/18/2018
APPENDIX C. GROUNDWATER ELEVATION DATADateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSLDateDTW(feet)Elevationft MSLT-01TOC: 551.20T-02TOC: 550.26T-03TOC: 554.90T-04TOC: 556.11T-05TOC: 560.25T-06STOC: 558.8611/22/96 4.11 547.09 11/22/96 9.7311/22/96 -- -- 11/22/96 -- -- 11/22/96 -- -- 11/22/96 13.31 545.5506/25/01 -- -- 06/25/01 10.18 540.08 06/25/01 -- -- 06/25/01 -- -- 06/25/01 15.49 544.76 06/25/01 13.57 545.2911/13/17 -- -- 11/13/17 -- -- 11/13/17 -- -- 11/13/17 -- -- 11/13/17 -- -- 11/13/17 10.79 554.0108/07/18 -- -- 08/07/18 -- -- 08/07/18 13.00 541.90 08/07/18 8.23 547.88 08/07/18 12.80 547.45 08/07/18 9.06 549.8011/19/18 -- -- 11/19/18 -- -- 11/19/18 11.61 543.29 11/19/18 7.02 549.09 11/19/18 11.48 548.77 11/19/18 9.05 549.81T-06DTOC: 558.59T-07TOC: 549.66T-08DTOC: 557.4711/22/96 13.26 545.33 11/22/96 11.04 538.62 11/22/96 -- --06/25/01 13.45 545.14 06/25/01 11.59 538.07 08/28/01 20.49 536.9811/13/17 10.96 553.59 11/13/17 -- -- 11/13/17 16.69 546.4208/07/18 10.44 548.15 08/07/18 10.64 539.02 08/07/18 22.80 534.67ERMPage 3 of 312/18/2018

The business of sustainability

APPENDIX D HISTORICAL GROUNDWATER ANALYTICAL RESULTS

APPENDIX D. HISTORICAL GROUNDWATER ANALYTICAL RESULTSWell No.Sampling DateTemperature pHSpecific ConductivityChlorideNitrateNitriteSulfateArsenicBariumCadmiumCalciumChromiumCobaltLeadMagnesiumManganeseSodiumZincPCE1,2,4-Trichloro-benzeneMCL1°CpH Unitsms/cm - 10 1 - 10 2,000 5 - 100 - 15 - - - - 5 70NC GW26.5-8.5500 250 10 1 25010 700 2- 10 - 15- 50 - 1,0000.7 7014,415ND8,8436,326MW-1 02/01/95 13.0 6.88 162-- 10.0 2.0 -- -- <10 <50 <5 12,200 <10 <10 <10 7,900 <50 4,700 <50<1 <1MW-1 05/24/95 16.0 6.96 165-- 6.0 2.0 -- -- <10 <50 <5 12,600 <10 <10 <10 8,200 <50 5,500 <50<1 <1MW-1 07/25/95 18.0 6.85 161-- 10.0 2.3 -- -- <10 <50 <5 13,400 <10 <10 <10 8,500 <50 5,600 <50<1 <1MW-1 10/18/95 17.8 6.65 165-- 6.0 2.2 -- -- <10 <50 <5 13,400 <10 <10 <10 8,100 <50 5,600 <50<1 <1MW-1 01/24/96 15.8 6.67 170-- 5.0 3.0 -- -- <10 <50 <5 16,600 <10 <10 <10 10,000 <50 6,890 <50<1 <1MW-1 04/09/96 12.5 6.65 173-- 5.0 3.0 -- -- <10 <50 <5 14,500 <10 <10 <10 8,400 <50 5,800 <50<1 <1MW-1 07/16/96 19.3 6.83 216-- 5.0 3.0 -- -- <10 <50 <5 14,400 <10 <10 <10 8,800 <50 5,900 <50<1 <1MW-1 10/16/96 18.9 6.79 254-- 5.0 3.0 -- -- <10 <50 <5 16,000 <10 <10 <10 8,500 <50 5,900 <50<1 <1MW-1 11/12/96 -- -- ---- 5.2 2.18 -- --<5 22 <5 14,000 <10 <10 <3 8,800 <10 6,100 <20-- --MW-1 01/08/97 13.5 6.41 288-- 6.0 3.0 -- -- <10 <50 <5 17,600 <10 <10 <10 9,100 <50 6,300 210<1 <1MW-1 04/09/97 15.4 6.97 209-- 9.0 3.0 -- -- <10 <50 <5 17,300 <10 <10 <10 8,600 <50 5,600 <50<1 <1MW-1 07/02/97 19.0 6.67 175-- 5.0 2.4 -- -- <10 <50 <5 16,500 <10 <10 <10 8,500 <50 5,700 <50<1 <1MW-1 10/08/97 20.9 6.67 145-- 6.0 2.8 -- -- <10 <50 <5 18,000 <10 <10 <10 9,500 <50 6,400 <50<1 <1MW-1 01/14/98 11.0 6.86 262-- 5.0 2.2 -- -- <10 <50 <5 14,100 <10 <10 <10 8,900 <50 5,900 <50<1 <1MW-1 04/07/98 17.1 6.84 187-- 5.1 2.4 -- -- <10 <50 <5 14,700 <10 <10 <10 9,200 <50 5,700 <50 <0.5 <0.5MW-1 07/08/98 17.7 6.72 193-- 5.0 2.3 -- -- <10 <50 <5 14,800 <10 <10 <10 9,100 <50 6,000 <50<1 <1MW-1 10/15/98 20.1 7.09 263-- 4.0 1.9 -- -- <10 <50 <5 14,300 <5 <10 <10 8,700 <50 6,200 <50 <0.5 <0.5MW-1 01/13/99 14.6 6.78 196-- 5.1 2.3 -- -- <10 <50 <1 14,000 <10 <10 <5 8,700 <10 6,100 <50<1 <1MW-1 04/20/99 19.3 7.01 169-- 6.1 4.8 -- -- <10 <50 <1 15,000 <10 <5 <5 8,900 <50 6,400 <50<1 <1MW-1 07/07/99 20.8 6.86 182-- <5 2.0 -- -- <10 <50 <5 14,000 <5 <5 <5 8,500 <5 6,000 230<1 <1MW-1 10/06/99 18.4 7.22 73-- 4.8 5.0 -- -- <10 <50 <5 13,900 60 <10 <10 9,900 <50 5,900 <50<1 <1MW-1 01/13/00 15.6 6.60 216-- 4.8 2.4 -- -- <10 <50 <5 15,000 <10 <10 <10 9,200 <50 6,300 <50<1 <1MW-1 04/11/00 16.0 6.57 273-- 6.9 3.4 -- -- <10 <50 <5 15,000 <10 <10 <10 9,000 <50 6,200 70<1 <1MW-1 07/11/00 19.2 6.64 180-- 5.8 2.6 -- -- <10 <50 <5 14,700 <10 <10 <10 8,900 <50 6,200 <50<1 <1MW-1 10/03/00 18.1 6.61 195-- 6.1 2.2 -- -- <10 <50 <5 12,000 <10 <10 <10 7,000 <50 5,000 <50<1 <1MW-1 01/03/01 11.5 6.76 270-- 5.1 2.6 -- -- <10 <50 <5 16,000 <10 <10 <10 9,400 <50 6,800 <50<1 <2MW-1 04/11/01 20.7 6.53 200-- 8.0 2.1 -- -- <10 <50 <5 18,000 <10 <10 <10 11,000 <50 7,300 <50<1 <1MW-1 07/02/01 14.7 6.55 161-- 6.2 2.3 -- --<5 27 <1 16,000 2.2 <5 <3 9,600 15 5,100 <10<1 <1MW-1 10/02/01 17.4 6.56 117-- 5.0 1.9 -- -- <10 <50 <5 12,000 <10 <10 <10 7,000 <50 5,000 <50<1 <2MW-1 01/10/02 15.4 6.79 246-- 13.1 2.1 -- -- <10 <50 <5 15,000 <10 <10 <10 10,000 <50 7,000 <50<1 <1MW-1 04/16/02 16.8 6.78 119-- 5.9 1.7 -- -- <10 <50 <5 16,000 <10 <10 <10 10,000 <50 7,100 <50<1 <1MW-1 07/09/02 17.8 6.75 173-- 4.2 1.6 -- -- <10 <50 <5 15,000 <10 <10 <10 9,810 <50 6,600 <50<1 <1MW-1 10/02/02 17.9 6.79 319-- 4.2 1.4 -- -- <10 <50 <5 13,000 <10 <10 10 7,780 <50 6,000 <50<1 <1MW-1 07/15/03 25.0 6.51 153-- 4.0 1.2 -- -- <10 <50 <5 13,000 <10 <10 <10 8,000 <50 6,000 <50<1 <1MW-1 11/07/03 17.8 6.95 138.3-- 4.0 <1 -- -- <10 290 <5 11,000 <10 <10 <10 7,600 <50 8,000 150<1 <1MW-1 06/10/04 16.4 6.91 130-- 4.1 0.90 -- -- <10 <1000 <5 12,000 <50 <10 <15 7,600 <50 6,000 <2000<1 <1MW-1 11/09/04 15.8 6.95 155.3-- 4.0 0.98 -- -- <10 <50 <5 13,000 <10 <10 <20 7,990 <50 6,000 <50<1 <1MW-1 04/11/05 14.5 6.71 140-- 4.0 1.0 -- -- <10 <50 <5 13,000 <10 <10 <10 7,900 <50 5,400 <50<1 <1MW-1 10/04/05 17.7 6.88 134-- 4.0 1.1 -- -- <10 <50 <5 12,000 <10 <10 <10 7,600 <50 6,100 <50<1 <1MW-1 04/11/06 16.8 5.98 140-- 4.9 1.2 -- -- <10 <50 <5 13,000 <10 <10 <10 7,500 <50 5800 <50<1 <1MW-1 Background Average valueVOCs (µg/L)Metals (µg/L)Field ParametersInorganics (mg/l)Total Dissolved Solids (mg/l)ERMPage 1 of 1212/18/2018
APPENDIX D. HISTORICAL GROUNDWATER ANALYTICAL RESULTSWell No.Sampling DateTemperature pHSpecific ConductivityChlorideNitrateNitriteSulfateArsenicBariumCadmiumCalciumChromiumCobaltLeadMagnesiumManganeseSodiumZincPCE1,2,4-Trichloro-benzeneMCL1°CpH Unitsms/cm - 10 1 - 10 2,000 5 - 100 - 15 - - - - 5 70NC GW26.5-8.5500 250 10 1 25010 700 2- 10 - 15- 50 - 1,0000.7 70VOCs (µg/L)Metals (µg/L)Field ParametersInorganics (mg/l)Total Dissolved Solids (mg/l)MW-1 10/03/06 18.0 6.86 145-- 4.0 1.5 -- -- <10 <50 <5 13,000 <10 <10 <10 8,320 <50 6,200 <50<1 <1MW-1 04/10/07 17.0 7.02 157-- 5.0 1.5 -- -- <10 290 <5 15,000 <10 <10 <10 9,100 <50 7,200 200<1 <1MW-1 11/01//07 16.5 6.49 144.6-- 4.2 1.5 -- -- <10 <50 <5 13,000 <10 <10 <10 8,100 <50 6,200 <50<1 <1MW-1 10/28/08 12.6 6.30 255-- 5.5 0.99 -- -- <10 19 <1 13,000 <5 <5 <5 8,200 <10 6,800 <30<1 <1MW-1 10/07/09 17.1 6.13 156-- 5.3 0.58 -- -- <10 20 <1 13,000 <5 <5 <5 8,100 <10 6,200 <30<1 <1MW-1 10/21/10 16.4 6.20 179-- <5 1.2 -- --<5 20.9 <1 12,700 <5 <5 <5 7,930 7.3 5,120 <10<1 <1MW-1 10/26/11 16.7 5.45 141-- <5 1.0 -- --<5 20.3 <1 12,600 <5 <5 <5 7,760 5.7 6,310 14.1<1 <1MW-1 10/17/12 16.2 6.35 190136 5.5 1.3 -- --<5 22.3 <1 12,500 <5 <5 <5 8,420 <5 6,450 14.7<1 <1MW-1 10/02/13 16.7 6.60 222163 12.6 0.83 -- -- <10 27 <1 17,200 <5 <5 <5 11,100 5.8 8,820 10.8<1 <1MW-1 10/15/14 16.2 6.05 177146 7.5 0.59 -- 4.1 < 10 20.7 < 1 13,400 < 5 < 5 < 5 8,730 < 5 6,250 < 10< 1 < 1MW-1 10/20/15 15.9 6.36 161163 8.4 1.3 <0.02 4.0 < 10.0 23.9 < 1.0 14,800 < 5.0 < 5.0 < 5.0 9,400 < 5.0 6,980 < 10.0 < 1.0 < 1.0MW-1 10/19/16 16.2 6.27 186146 7.7 0.28 <0.02 4.2 < 10.0 25 < 1.0 15,400 < 5.0 < 5.0 < 5.0 10,000 < 5.0 6,940 11.9 < 1.0 < 1.0MW-1 11/22/17 14.1 6.63 187149 7.7 0.75 -- 3.4 < 10.0 23.8 < 1.0 15,100 < 5.0 < 5.0 < 5.0 9,730 18.9 6,990 < 10.0 < 5.0 < 5.0MW-1 11/22/17 (DUP)145 7.8 0.79 -- -- < 10.0 22.6 < 1.0 14,200 < 5.0 < 5.0 < 5.0 9,200 16.6 6,560 < 10.0 < 5.0 < 5.0MW-1 11/20/18 11.1 6.47 27313.4 0.51 -- -- < 10.0 35.7 < 1.0 21,900 < 5.0 < 5.0 < 5.0 14,600 < 5.0 12,800 < 10.0 < 5.0 < 5.0Average:6.7MW-2 02/01/95 16.5 7.00 330-- 12 3.3 -- --22 50 <529,800<10 <10 <1013,000<5011,20060<1 <1MW-2 05/24/95 20.0 7.22 413-- 23 7.0 -- --22 70 <535,80047 <10 <1015,500<5013,70060<1 <1MW-2 07/25/95 18.0 7.41 475-- 30 13.0 -- --22 100 <542,90013 <10 <1020,100<5017,100<50<1 <1MW-2 10/18/95 20.3 6.40 403-- 19 8.6 -- --21 90 <537,000<10 <10 <1016,800<5014,400<50<1 <1MW-2 01/24/96 16.1 6.48 823-- 56 30 -- --17 140 <566,400<10 <10 <1027,6006020,500190<1 <1MW-2 04/09/96 14.8 6.50 1,178-- 42 110 -- --14 260 <5124,000<10 <10 <1051,800<5021,900260<1 <1MW-2 07/16/96 22.7 6.35 1,170-- 96 140 -- --15 260 <5124,00015 <10 <1052,300<5022,800<50<1 <1MW-2 10/16/96 22.4 6.14 798-- 77 42 -- --17 180 <591,000<10 <10 <1034,300<5016,300220<1 <1MW-2 11/14/96 -- -- ---- 232 63.7 -- --25 290 <5110,00037 <10 6.661,0001643,000370-- --MW-2 01/08/97 15.2 6.33 1,170-- 80 88 -- --14 200 <5119,000<10 <10 <1042,100<5018,200400<1 <1MW-2 04/09/97 21.8 6.63 875-- 59 98 -- --13 190 <5100,000<10 <10 <1039,000<5015,900160<1 <1MW-2 07/02/97 22.4 6.74 940-- 61 76 -- --12 160 <598,600<10 <10 <1036,700<5015,600180<1 <1MW-2 10/08/97 26.0 6.23 707-- 63 57 -- -- <10 180 <594,300<10 <10 <1035,900<5016,200<50<1 <1MW-2 01/14/98 15.7 6.52 777-- 40 44 -- --13 130 <554,600<10 <10 <1028,500<5011,900290<1 <1MW-2 04/07/98 23.9 6.15 771-- 28 71 -- --13 150 <567,800<10 <10 <1038,900<5011,300460 <0.5 <0.5MW-2 07/08/98 20.0 6.29 627-- 25 50 -- -- <10 140 <562,400<10 <10 <1031,600<5011,400360<1 <1MW-2 10/15/98 19.1 6.72 545-- 19 28 -- -- <10 110 <546,000<5 <10 <1022,600<5010,200230 <0.5 <0.5MW-2 01/13/99 17.2 6.29 416-- 10.2 9.0 -- -- 27.8 77 <128,000<10 <10 <515,000<107,900151<1 <1MW-2 04/20/99 18.3 6.39 964-- 14.1 67.7 -- --15 210 <171,000<10<5<540,000<5011,0001,005<1 <1MW-2 07/07/99 23.7 6.03 819-- 8.8 100 -- -- <10 210 <571,000<5 <5 <539,000<5011,000420<1 <1MW-2 10/06/99 20.6 6.54 609-- 7.2 51 -- --20 150 <550,60050 <10 <1031,300<508,300550<1 <1MW-2 01/13/00 21.2 6.23 539-- 7.2 38 -- --10 120 <547,300<10 <10 <1025,400<508,800370<1 <1MW-2 04/11/00 18.2 6.01 504-- 11 36 -- --10 110 <540,000<10 <10 <1022,000<508,400400<1 <1MW-2 07/11/00 22.1 6.49 462-- 19 32 -- -- <10 90 <535,200<10 <10 <1018,400<507,900270<1 <1MW-2 10/03/00 21.0 6.17 447-- 17 22 -- -- <10 100 <540,000<10 <10 <1021,0007010,000260<1 <1ERMPage 2 of 1212/18/2018
APPENDIX D. HISTORICAL GROUNDWATER ANALYTICAL RESULTSWell No.Sampling DateTemperature pHSpecific ConductivityChlorideNitrateNitriteSulfateArsenicBariumCadmiumCalciumChromiumCobaltLeadMagnesiumManganeseSodiumZincPCE1,2,4-Trichloro-benzeneMCL1°CpH Unitsms/cm - 10 1 - 10 2,000 5 - 100 - 15 - - - - 5 70NC GW26.5-8.5500 250 10 1 25010 700 2- 10 - 15- 50 - 1,0000.7 70VOCs (µg/L)Metals (µg/L)Field ParametersInorganics (mg/l)Total Dissolved Solids (mg/l)MW-2 01/03/01 13.5 6.27 594-- 25 27 -- --10 100 <542,500<10 <10 <1022,0008011,500220<1 <2MW-2 04/11/01 20.4 6.38 381-- 7.7 16 -- --10 70 <529,000<10 <10 <1015,000<506,900200<1 <1MW-2 07/02/01 18.9 6.20 316-- 30 16 -- --<5 2,800 3.11,700,000<229<3810,0008,700700,000<10<1 <1MW-2 10/02/01 21.8 6.30 329-- 5.3 9.0 -- --10 70 <528,000<10 <10 <1014,000<507,000160<1 <2MW-2 01/10/02 17.0 6.16 388-- 14.8 14 -- --10 80 <533,000<10 <10 <1017,000<509,000210<1 <1MW-2 04/16/02 21.2 6.56 336-- 7.9 14 -- --10 45 <531,000<10 <10 <1016,000<508,700420<1 <1MW-2 07/09/02 25.5 6.32 476-- 34 19 -- -- <10 100 <543,000<10 <10 <1023,400<5010,900250<1 <1MW-2 10/02/02 24.3 6.26 317-- 6.4 16 -- --10 77 <525,000<10 <10 1012,440<506,900230<1 <1MW-2 07/15/03 21.0 6.08 279-- 11 15 -- -- <10 70 <530,000<10 <10 <1017,000<507,000150<1 <1MW-2 11/07/03 19.7 6.56 2,876-- 10 13 -- --10 190 <528,000<10 <10 <1016,000<508,000210<1 <1MW-2 06/10/04 26.1 6.45 530-- 37 32 -- -- <10 <1000 <548,000<50 <10 <1526,000<5014,000<2000<1 <1MW-2 11/09/04 16.6 6.29 311-- 6.0 9.4 -- --10 80 <528,000<10 <10 <2015,040<507,000130<1 <1MW-2 04/12/05 16.1 6.29 251-- 8.0 13 -- --11 60 <530,000<10 <10 <1016,000<506,900<140<1 <1MW-2 10/04/05-- Dry Dry -- --Dry Dry Dry Dry Dry Dry Dry Dry Dry Dry DryDry DryMW-2 04/11/06 19.4 6.42 522-- 44 33 -- --10 120 7.046,000<10 <10 <1026,900<5015,000130<1 <1MW-2 10/03/06 19.9 6.29 288-- 11 13 -- --12 78 <530,000<10<10 <1016,000<508,800160<1 <1MW-2 04/10/07 14.1 6.04 657-- 20 19 -- --24 70 <533,00011 <10 <1017,500<509,000120<1 <1MW-2 11/01/07-- 9.4 18 -- -- <10 76 <527,000<10 <10 <1014,000897,000130<1 <1MW-2 10/29/08 18.4 6.00 772-- 28 26 -- -- <10 98 <137,000<5 <5 <521,0008613,000200<1 <1MW-2 10/07/09 20.2 6.08 1,720-- 20 0.60 -- -- <10 44 <135,000<5 <5 <528,0002110,000<30<1 <1MW-2 10/21/10 19.7 5.99 1,230-- 138 72.9 -- -- 12.7 279 <1115,0005.0<5<565,90010432,200304<1 <1MW-2 10/27/11 19.7 5.19 260-- 5.5 13.4 -- --7.9 58.9 <125,9005.8<5<513,20019.25,98085.5<1 <1MW-2 10/18/12 17.1 6.18 669676 78.9 62.6 -- --9.3 184 <168,6008.8<5<539,90054.121,200241<1 <1MW-2 10/03/13 23.1 7.50 790856 161 76.5 -- -- <10 159 <167,700<5 <5 <538,80075.814,800244<1 <1MW-2 10/15/14 18.4 5.85 659378 32.1 29.5 -- 13.4 < 10 101 < 145,200< 5< 5< 524,60013.18,020123< 1 < 1MW-2 10/21/15 16.5 6.40 269216 9.7 18.8 < 0.1 -- < 10.0 58.4 < 1.025,2006.5 < 5.0 < 5.013,10011.5< 500070.7 < 1.0 < 1.0MW-2 10/19/16 18.2 6.04 341216 9.8 16.2 < 0.1 -- < 10.0 69.2 < 1.030,800< 5.0 < 5.0 < 5.015,40010.8< 5000 77.9 < 1.0 < 1.0MW-2 11/21/17 16.2 6.11 1,9081020 357 183 < 20 -- < 10.0 474 < 1.0294,00011.2 < 5.0 < 5.0155,00030236,200314 < 1.0 < 1.0MW-2 11/20/18 13.1 6.32 292-- 11.8 13.9 -- -- 10.4 55 < 1.027,0006.7 < 5.0 < 5.014,400< 5.0< 500060 < 5.0 < 5.0MW-3 02/01/95 13.5 5.82 2,275-- 570 21 -- -- <10 <50 26189,000<1087<10126,0007,70040,70043,000<1 <1MW-3 05/24/95 16.0 5.71 1,825-- 375 10 -- -- <10 <50 37171,000<10102<1092,4008,10029,60047,100<1 <1MW-3 07/25/95 17.0 5.65 2,538-- 640 9.0 -- -- <10 <50 39231,000<10110<10152,0009,20043,50052,000<1 <1MW-3 10/18/95 19.3 5.46 1,403-- 264 24 -- -- <10 <50 32130,000<1065<1063,4007,60023,70042,000<1 <1MW-3 01/24/96 13.2 5.59 1,235-- 206 15 -- -- <10 <50 23121,000<1049<1059,8007,20022,40039,000<1 <1MW-3 04/09/96 13.2 5.59 1,235-- 210 12 -- -- <10 <50 19121,000<1053<1061,0006,60021,50034,000<1 <1MW-3 07/16/96 19.1 5.59 1,477-- 310 7.0 -- -- <10 <50 29147,000<1046<1078,8008,50024,50041,300<1 <1MW-3 10/16/96 20.4 5.44 397-- 801 1.0 -- -- <10 <50 37336,000<10114<10174,00010,30052,80041,400<1 <1MW-3 11/13/96 -- -- ---- 809 9.81 -- --<5 40 40220,000<1099<3150,00011,00052,00047,000-- --MW-3 01/08/97 13.2 5.43 4,560-- 476 3.0 -- -- <10 <50 23227,000<1057<10122,0007,30040,10032,100<1 <1MW-3 04/09/97 23.3 5.72 946-- 192 30 -- -- <10 <50 22125,000<1051<1052,0006,00019,90030,300<1 <1ERMPage 3 of 1212/18/2018
APPENDIX D. HISTORICAL GROUNDWATER ANALYTICAL RESULTSWell No.Sampling DateTemperature pHSpecific ConductivityChlorideNitrateNitriteSulfateArsenicBariumCadmiumCalciumChromiumCobaltLeadMagnesiumManganeseSodiumZincPCE1,2,4-Trichloro-benzeneMCL1°CpH Unitsms/cm - 10 1 - 10 2,000 5 - 100 - 15 - - - - 5 70NC GW26.5-8.5500 250 10 1 25010 700 2- 10 - 15- 50 - 1,0000.7 70VOCs (µg/L)Metals (µg/L)Field ParametersInorganics (mg/l)Total Dissolved Solids (mg/l)MW-3 07/02/97 20.0 5.61 13,030-- 230 8.0 -- -- <10 <50 35136,000<1060<1063,6006,89021,60033,800<1 <1MW-3 10/08/97 19.9 5.71 15,160-- 289 3.3 -- -- <10 <50 22146,000<1075<1070,0006,12024,90028,600<1 <1MW-3 01/14/98 13.7 5.71 12,830-- 147 13 -- -- <10 <50 2087,200<1044<1044,4005,51019,40028,000<1 <1MW-3 04/07/98 16.5 5.86 1,213-- 158 11 -- -- <10 <50 1889,900<1035<1045,0005,44017,50024,000 <0.5 <0.5MW-3 07/08/98 20.9 5.72 1,276-- 190 6.7 -- -- <10 <50 1895,500<1048<1050,2005,25017,90025,900<1 <1MW-3 10/15/98 16.9 6.01 3,830-- 740 0.86 -- -- <10 <50 40238,000<586<10154,00010,30039,50043,800 <0.5 <0.5MW-3 01/13/99 15.5 5.68 4,560-- 879 0.85 -- -- 80.8 <50 13240,000<105511.3180,0006,52157,00025,600<1 <1MW-3 04/20/99 15.7 5.92 1,358-- 176 10 -- --21 <50 17.5100,000<1048<552,0004,80020,00028,970<1 <1MW-3 07/07/99 19.7 5.74 1,415-- 280 10 -- -- <10 <50 19140,000<560<577,0005,80030,00034,000<1 <1MW-3 10/06/99 17.3 6.10 3,800-- 715 0.68 -- -- <10 <50 23226,0007080<10171,0008,37046,60034,400<1 <1MW-3 01/13/00 15.4 5.65 4,430-- 715 0.57 -- -- <10 <50 13255,000<1040<10191,0005,59057,50018,000<1 <1MW-3 04/11/00 16.7 5.67 1,237-- 197 29 -- -- <10 <50 20107,000<1030<1054,0006,20021,10031,100<1 <1MW-3 07/11/00 18.0 5.87 1,450-- 233 15 -- -- <10 <50 16122,000<1030<1066,2006,40022,30029,200<1 <1MW-3 10/03/00 17.5 5.59 3,630-- 589 0.34 -- -- <10 <50 19190,000<1070<10120,0007,39036,00029,600<1 <1MW-3 01/03/01 10.5 5.64 3,290-- 657 0.83 -- -- <10 <50 19220,000<1070<10144,0008,00043,90030,000<1 <2MW-3 04/11/01 18.0 5.80 1,182-- 199 30 -- -- <10 <50 17109,000<1050<1052,0006,00020,10028,800<1 <1MW-3 07/02/01 15.0 5.75 1,420-- 350 6.6 -- --<5 99 12140,0009.1503.585,0005,80029,00019,000<1 <1MW-3 10/02/01 17.0 5.91 3,920-- 672 0.86 -- -- <10 <50 15210,000<1060<10140,0006,90042,00026,500<1 <2MW-3 01/10/02 15.0 6.07 3,899-- 712 1.0 -- --10 <50 11230,000<1040<10180,0005,70056,00016,300<1 <1MW-3 04/16/02 19.0 5.69 5,330-- 258 39 -- --10 <50 20124,000<1050<1061,0007,70022,00036,000<1 <1MW-3 07/09/02 18.5 5.92 1,723-- 323 15 -- -- <10 <50 19140,000<1060<1088,4007,00026,00030,700<1 <1MW-3 10/02/02 18.7 5.90 2,130-- 543 1.1 -- -- <10 <50 17200,000<107010121,0007,70039,00027,200<1 <1MW-3 07/15/03 18.2 5.56 1,190-- 240 25 -- -- <10 <50 20120,000<1060<1070,0007,30022,00029,300<1 <1MW-3 11/07/03 19.7 5.85 1,716-- 335 1.0 -- -- <10 460 20150,000<1070<1089,0009,10027,00038,000<1 <1MW-3 06/09/04 16.9 5.74 1,400-- 240 7.6 -- -- <10 <1000 14130,000<5052<1575,0006,10028,00028,000<1 <1MW-3 11/09/04 16.0 5.62 1,135-- 165 16 -- -- <10 <50 16100,000<1050<2055,9005,50021,00022,900<1 <1MW-3 04/12/05 13.8 6.06 7,890-- 96 12 -- -- <10 180 1284,000<1035<1042,0004,50017,00020,000<1 <1MW-3 10/04/05 19.5 5.80 1,414-- 412 0.72 -- -- <10 <50 19180,000<106711104,0008,20030,00027,100<1 <1MW-3 04/11/06 15.4 5.92 917-- 135 16 -- -- <10 <50 13100,000<1030<1046,0005,21017,00021,000<1 <1MW-3 10/03/06 17.1 5.95 1,776-- 484 0.32 -- -- <10 <50 11170,000<1049<10125,0006,70039,00019,200<1 <1MW-3 04/10/07 19.8 6.44 366-- 89 11 -- -- <10 <50 9.084,000<1020<1039,4004,14013,00016,700<1 <1MW-3 11/01/07 16.8 6.25 1,379-- 300 0.86 -- -- <10 <50 10150,000<1031<1073,0004,70021,00016,000<1 <1MW-3 10/29/08 17.3 5.80 102-- 120 28 -- -- <10 <10 1183,000<520<541,0004,00017,00018,000<1 <1MW-3 10/07/09 18.1 6.03 1,240-- 170 3.2 -- -- <10 23 7.8100,000<59.8<553,0002,80016,00012,000<1 <1MW-3 10/22/10 16.2 5.91 1,610-- 302 0.4 -- --6.6 20.8 11.6141,000<516.5<575,7002,53023,00017,300<1 <1MW-3 10/27/11 16.9 5.56 2.18-- 389 <0.2 -- --<5 14.2 10.3176,000<513<5110,0001,80035,00013,500<1 <1MW-3 10/17/12 17.0 6.36 2.02 1,170 369 0.20 -- --<5 16 8.9171,000<515.3<5108,0001,60038,2009,860<1 <1MW-3 10/03/13 17.4 7.60 950592 127 11 -- -- <10 10.6 9.180,000<515.3<545,2001,98014,30011,500<1 <1MW-3 10/14/14 17.4 5.95 1,7561040 326 0.39 -- -- < 10 10.1 6.6144,000< 55.0< 590,900188033,00010,000< 1 < 1MW-3 10/21/15 16.3 6.20 1,4101020 229 0.53 <0.02 -- < 10.0 < 5.0 7.4131,000< 5.0 < 5.0 < 5.084,00052625,6009,610 < 1.0 < 1.0MW-3 10/19/16 16.4 6.37 1,216841 183 6.9 < 0.08 -- < 10.0 < 5.0 4.1111,000< 5.0 < 5.0 < 5.067,90031120,7006,150 < 1.0 < 1.0ERMPage 4 of 1212/18/2018
APPENDIX D. HISTORICAL GROUNDWATER ANALYTICAL RESULTSWell No.Sampling DateTemperature pHSpecific ConductivityChlorideNitrateNitriteSulfateArsenicBariumCadmiumCalciumChromiumCobaltLeadMagnesiumManganeseSodiumZincPCE1,2,4-Trichloro-benzeneMCL1°CpH Unitsms/cm - 10 1 - 10 2,000 5 - 100 - 15 - - - - 5 70NC GW26.5-8.5500 250 10 1 25010 700 2- 10 - 15- 50 - 1,0000.7 70VOCs (µg/L)Metals (µg/L)Field ParametersInorganics (mg/l)Total Dissolved Solids (mg/l)MW-3 11/21/17 14.6 6.12 1,586960 249 0.98 <0.02 -- < 10.0 10.3 8.5178,000< 5.0 < 5.0 < 5.096,000117026,90010,400 < 1.0 < 1.0MW-3 11/20/18 17.3 6.21 1,041-- 122 5.8 -- -- < 10.0 < 5.0 5.190,300< 5.0 < 5.0 < 5.055,30074.916,9008,280 < 5.0 < 5.0MW-4 02/01/95 13.0 6.25 11,300-- 2,080 860 -- -- <10 300 6.01,770,000<1034<10479,0004,100218,0007,400<1 <1MW-4 05/24/95 17.5 6.09 8,398-- 1,410 650 -- -- <10 260 6.01,330,000<1033<10338,0003,000173,0005,600<1 <1MW-4 07/25/95 19.0 6.10 10,325-- 1,750 820 -- -- <10 300 101,650,000<1031<10427,0003,700200,0006,300<1 <1MW-4 10/18/95 17.5 5.97 9,583-- 1,581 810 -- -- <10 300 101,510,000<1025<10384,0003,000188,0004,800<1 <1MW-4 01/24/96 12.4 6.20 8,185-- 1,318 660 -- -- <10 270 <51,320,000<1021<10327,0003,200158,0005,300<1 <1MW-4 04/09/96 11.6 6.24 8,070-- 1,344 800 -- -- <10 300 6.01,250,000<1021<10335,0002,800150,0005,300<1 <1MW-4 07/16/96 20.4 6.06 1,176-- 1,562 1,300 -- -- <10 350 9.01,650,000<1029<10408,0003,350139,0004,540<1 <1MW-4 10/16/96 18.6 5.85 17,630-- 2,155 1,500 -- -- <10 560 142,410,0001346<10561,0006,050247,0006,880<1 <1MW-4 11/14/96 -- -- ---- 3,100 1,600 -- --6.2 490 112,300,000<1041<3630,0005,200240,0007,600-- --MW-4 01/08/97 12.4 6.07 21,890-- 2,169 2,300 -- -- <10 480 142,880,000<1039<10615,0005,400239,0007,200<1 <1MW-4 04/09/97 16.0 6.08 12,320-- 1,290 1,200 -- -- <10 330 8.01,870,000<1031<10414,0003,700202,0004,900<1 <1MW-4 07/02/97 16.2 6.02 14,540-- 1,375 1,300 -- -- <10 350 6.01,690,000<1028<10400,0003,250201,0004,050<1 <1MW-4 10/08/97 21.8 5.84 15,740-- 1,866 2,000 -- -- <10 450 112,480,000<1047<10611,0004,940232,0004,530<1 <1MW-4 01/14/98 11.7 5.81 17,160-- 1,455 1,100 -- -- <10 410 7.01,500,000<1030<10458,0004,010189,0004,000<1 <1MW-4 04/07/98 16.7 6.21 10,810-- 978 490 -- -- <10 280 <51,030,000<1016<10293,0002,080141,0002,500 <0.5 <0.5MW-4 07/08/98 23.0 6.16 9,130-- 1,026 640 -- -- <10 360 <51,170,000<1024<10339,0002,450162,0002,690<1 <1MW-4 10/15/98 18.2 6.63 16,620-- 1,643 2,000 -- -- <10 500 <51,950,000<540<10575,0004,240235,0003,810 <0.5 <0.5MW-4 01/13/99 14.5 5.84 21,220-- 1,795 1,872 -- -- 597 630 5.792,100,000<104837.8650,0005,762270,0005,810<1 <1MW-4 04/20/99 16.1 6.38 12,080-- 1,066 2,650 -- -- 178 370 <5910,000<102114410,0002,541200,0002,680<1 <1MW-4 07/07/99 20.0 5.92 13,870-- 1,200 710 -- -- <10 31 5.01,400,000<525<5430,0003,400220,0002,600<1 <1MW-4 10/06/99 18.0 6.53 14,170-- 1,393 1,300 -- -- <10 410 6.01,500,0003030<10502,0004,940212,0003,490<1 <1MW-4 01/13/00 17.9 6.24 13,590-- 1,393 1,100 -- --20 520 <51,630,000<10 <10 <10474,0002,730235,0002,620<1 <1MW-4 04/11/00 14.9 6.11 10,600-- 971 830 -- --10 390 <51,070,000<10 <10 <10299,0001,680182,0002,300<1 <1MW-4 07/11/00 20.3 6.23 9,910-- 941 670 -- -- <10 290 <5871,000<10 <10 <10254,0002,170160,0002,100<1 <1MW-4 10/03/00 20.2 5.93 15,120-- 1,299 1,200 -- -- <10 550 6.01,500,000<10 10 <10430,0002,730230,0002,910<1 <1MW-4 01/03/01 12.2 6.15 19,690-- 1,515 1,500 -- -- <10 540 7.01,820,000<10 10 <10527,0004,170260,0003,640<1 <2MW-4 04/11/01 16.6 6.19 14,270-- 1,158 1,100 -- -- <10 460 <51,450,000<10 <10 <10401,0002,370220,0002,800<1 <1MW-4 07/02/01 15.9 6.21 7,700-- 1,000 730 -- --<5 410 2.8780,00016149.5280,0002,700220,0002,500<1 <1MW-4 10/02/01 18.0 6.07 12,880-- 1,296 830 -- -- <10 360 <51,200,000<10 <10 <10340,0002,280200,0002,660<1 <2MW-4 01/10/02 14.2 6.14 11,370-- 1,388 640 -- -- <10 250 <5970,000<10 <10 <10350,0001,840200,0002,090<1 <1MW-4 04/16/02 17.3 6.53 9,390-- 869 690 -- --10 250 <5857,000<10 <10 <10270,0001,520160,0002,000<1 <1MW-4 07/09/02 20.1 5.96 8,870-- 927 670 -- --10 500 <5890,000<10 <10 <10305,0002,800170,0002,460<1 <1MW-4 10/02/02 20.4 5.99 7,400-- 1,059 870 -- -- <10 315 <51,100,000<10 <10 10326,8003,400190,0002,750<1 <1MW-4 07/15/03 21.3 6.29 2,660-- 324 210 -- -- <10 100 <5280,000<10 <10 <1090,00036079,000860<1 <1MW-4 11/07/03 19.8 5.77 11,290-- 1,053 1,100 -- -- <10 470 7.01,400,000<10 <10 10413,0001,300200,0004,100<1 <1MW-4 06/09/04 19.9 5.94 8,000-- 830 690 -- -- <10 <1,000 160940,000<50<10 <15270,0001,100190,0002,400<1 <1MW-4 11/09/04 14.4 6.31 7,320-- 682 600 -- --10 340 <5810,000<10 <10 <20229,000810150,0001,800<1 <1MW-4 04/12/05 13.2 6.15 6,790-- 543 700 -- -- <10 370 <5870,000<10 <10 <10241,0001,200160,0001,900<1 <1ERMPage 5 of 1212/18/2018
APPENDIX D. HISTORICAL GROUNDWATER ANALYTICAL RESULTSWell No.Sampling DateTemperature pHSpecific ConductivityChlorideNitrateNitriteSulfateArsenicBariumCadmiumCalciumChromiumCobaltLeadMagnesiumManganeseSodiumZincPCE1,2,4-Trichloro-benzeneMCL1°CpH Unitsms/cm - 10 1 - 10 2,000 5 - 100 - 15 - - - - 5 70NC GW26.5-8.5500 250 10 1 25010 700 2- 10 - 15- 50 - 1,0000.7 70VOCs (µg/L)Metals (µg/L)Field ParametersInorganics (mg/l)Total Dissolved Solids (mg/l)MW-4 10/04/05 19.4 6.19 11,240-- 726 1,200 -- -- <10 470 6.01,600,000<10 <10 <10426,0003,000230,0002,040<1 <1MW-4 04/11/06 17.4 6.22 7,120-- 539 800 -- -- <10 390 <5970,000<10 <10 <10267,000940178,0001,020<1 <1MW-4 10/03/06 18.5 6.49 10,490-- 563 1,200 -- -- <10 588 <51,400,000<10 <10 <10379,0001,430210,0001,300<1 <1MW-4 04/10/07 22.0 6.32 5,830-- 355 640 -- -- <10 480 <5740,000<10 <10 <10195,0001,030130,0001,280<1 <1MW-4 11/01/07 17.4 6.32 10,130-- 450 1,100 -- -- <10 410 <51,200,000<10 <10 <10300,000660190,0001,400<1 <1MW-4 10/29/08 13.5 6.10 17,300-- 480 1,000 -- -- <10 340 1.01,000,000<10 <10 <5270,000300200,00011,000<1 <1MW-4 10/07/09 18.2 6.10 8,620-- 300 1,100 -- -- <10 390 1.21,000,000<10 <10 <5250,0001,500180,0001,300<1 <1MW-4 10/22/10 18.1 6.16 1,440-- 248 663 -- -- 26.8 323 1.9648,000<5 <5 <5171,000673158,000829<1 <1MW-4 10/27/11 17.6 5.88 8.22-- 276 993 -- --<5 473 1.51,030,000<5 <5 <5248,000391259,0001,150<1 <1MW-4 10/17/12 17.5 6.43 6.09 4,440 298 665 -- --<5 331 <1754,000<5 <5 <5163,00061.2189,000631<1 <1MW-4 10/03/13 17.9 6.50 3,800 2,890 263 382 -- --<5 204 <1439,000<5 <5 <5112,00039.6157,000356<1 <1MW-4 10/14/14 18.3 6.22 6,343 4,930 218 735 -- 54.5 < 10 363 < 1745,0006.5< 5< 5186,00025.2187,000754< 1 < 1MW-4 10/21/15 16.1 6.40 4,100 3,790 289 453 < 3 75.0 < 10.0 272 < 1.0491,000< 5.0 < 5.0 < 5.0133,00020.8228,000383 < 1.0 < 1.0MW-4 10/19/16 16.9 6.78 5,732 5,400 265 724 < 6 48.8 < 10.0 388 < 1.0 667,000< 5.0 < 5.0 < 5.0 166,000< 5.0 201,000481 < 1.0 < 1.0MW-4 11/20/17 13.8 6.60 5,477 4,020 189 731 < 20 48.7 < 10.0 368 < 1.0541,000< 5.0 < 5.0 < 5.0164,000177253,000474< 1.0 < 1.0MW-4 11/19/18 11.1 6.73 4,448-- 149 525 -- -- < 10.0 403 < 1.0565,000< 5.0 < 5.0 < 5.0140,000< 5.0211,000442 < 5.0 < 5.0MW-4D 11/12/03 18.6 6.06 2,400-- 4,755 1,700 -- -- <10 1,100 9.02,500,000<1010301,600,0009,700160,0001,560<1 <1MW-4D 11/09/04 13.8 7.31 3,100-- 7,566 830 -- --10 550 122,800,000<10 <10 <201,660,00010,400210,000330<1 <1MW-4D 02/01/95 17.0 6.54 20,325-- 3,160 2,400 -- -- <10 1,000 <54,150,000<1027<10764,0003,400269,000<50<1 <1MW-4D 05/24/95 19.0 6.42 17,850-- 2,430 2,200 -- -- <10 860 <53,580,000<1030<10679,0004,000203,000<50<1 <1MW-4D 11/20/17 13.8 8.60 --875 636 41.5 < 20.0 -- < 10.0 225 < 1.0284,000< 5.0 < 5.0 < 5.0138,0001,15032,60014.9 < 1.0 < 1.0MW-5 07/25/95 21.0 6.36 15,900-- 2,280 2,000 -- -- <10 800 <52,980,000<1031<10670,0004,100165,000<50<1 <1MW-5 10/18/95 19.1 6.21 15,750-- 2,123 1,600 -- -- <10 800 <52,690,000<1032<10729,0004,800124,000<50<1 <1MW-5 01/24/96 15.9 6.23 15,800-- 2,723 1,600 -- -- <10 1,060 <52,610,000<1028<10740,0006,300124,000<50<1 <1MW-5 04/09/96 14.1 6.25 18,220-- 1,788 1,300 -- -- <10 1,070 <52,680,000<1027<10666,0006,60097,000<50<1 <1MW-5 07/16/96 22.3 6.30 18,560-- 1,321 3,300 -- -- <10 1,110 <52,940,000<1035<10797,0007,230106,00060<1 <1MW-5 10/16/96 20.7 5.53 26,020-- 1,806 3,000 -- -- <10 1,590 <54,000,0001044<10901,0009,750110,000<50<1 <1MW-5 11/14/96 -- -- ---- 2,500 3,100 -- --<5 1,500 <5 <1000 <544<3940,0008,600110,000<20 <30 <100MW-5 01/08/97 15.5 5.66 29,320-- 1,885 5,100 -- -- <10 1,450 <54,790,000<1043<101,010,0009,350115,000210<1 <1MW-5 04/09/97 17.8 6.22 30,980-- 2,022 4,300 -- -- <10 1,460 <54,660,000<1047<10887,0009,030106,000<50<1 <1MW-5 07/02/97 20.8 6.28 27,080-- 1,886 3,700 -- -- <10 1,330 <54,410,000<1038<10869,0009,480101,000<50<1 <1MW-5 10/08/97 21.3 6.13 24,050-- 1,799 3,700 -- -- <10 1,110 <54,010,000<1040<10806,0007,59089,00070<1 <1MW-5 01/14/98 15.3 6.03 23,900-- 1,651 1,900 -- -- <10 1,040 <53,030,000<1032<10710,0007,53080,000<50<1 <1MW-5 04/07/98 18.4 6.31 21,360-- 1,328 2,200 -- -- <10 880 <52,800,000<1029<10615,0006,78073,00050 <0.5 <0.5MW-5 07/08/98 23.8 6.11 18,940-- 1,411 990 -- -- <10 1,050 <53,100,000<1029<10574,0005,66071,000<50<1 <1MW-5 10/15/98 19.9 6.02 24,010-- 1,799 1,900 -- -- <10 1,270 <53,590,000<529<10642,0006,35091,000<50 <0.5 <0.5MW-5 01/13/99 16.6 6.08 28,460-- 2,428 3,011 -- -- 1,053 1,800 <53,400,000<103842.6850,0006,215100,00053.2<1 <1MW-5 04/20/99 20.4 6.57 26,130-- 2,078 3,432 -- -- 1,040 1,900 <51,600,000<1033401,100,0005,290100,00082.4<1 <1MW-5 07/07/99 23.0 6.23 27,230-- 2,400 2,700 -- -- <10 1,300 <53,500,000<528<51,100,0005,300120,00022<1 <1ERMPage 6 of 1212/18/2018
APPENDIX D. HISTORICAL GROUNDWATER ANALYTICAL RESULTSWell No.Sampling DateTemperature pHSpecific ConductivityChlorideNitrateNitriteSulfateArsenicBariumCadmiumCalciumChromiumCobaltLeadMagnesiumManganeseSodiumZincPCE1,2,4-Trichloro-benzeneMCL1°CpH Unitsms/cm - 10 1 - 10 2,000 5 - 100 - 15 - - - - 5 70NC GW26.5-8.5500 250 10 1 25010 700 2- 10 - 15- 50 - 1,0000.7 70VOCs (µg/L)Metals (µg/L)Field ParametersInorganics (mg/l)Total Dissolved Solids (mg/l)MW-5 10/06/99 21.8 6.70 27,020-- 2,434 3,300 -- -- <10 1,610 <53,230,0001030201,310,0008,180100,000<50<1 <1MW-5 01/13/00 21.2 6.19 27,450-- 2,434 2,900 -- -- <10 1,760 <53,720,000<1030201,170,0007,670170,000<50<1 <1MW-5 04/11/00 18.6 6.24 23,000-- 2,310 3,500 -- --10 1,940 <53,690,000<102020970,0007,900189,00060<1 <1MW-5 07/11/00 23.3 6.28 27,000-- 2,362 3,900 -- -- <10 1,970 <54,670,000<1030<101,040,0008,210230,00060<1 <1MW-5 10/03/00 23.5 6.23 25,000-- 2,489 3,900 -- -- <10 1,950 <54,200,000<1030<10950,0008,200240,000<50<1 <1MW-5 01/03/01 13.4 6.25 35,000-- 2,461 3,600 -- -- <10 1,880 <54,170,000<1030<101,070,0009,700390,000<50<1 <2MW-5 04/11/01 20.4 6.28 31,300-- 2,719 2,600 -- -- <10 2,100 <54,700,000<1030101,060,00011,000518,000<50<1 <1MW-5 07/02/01 18.8 6.28 35,400-- 2,500 <10 -- --<5 3,000 3.41,800,000<232<3860,0009,300760,000<10<1 <1MW-5 10/02/01 20.0 6.23 37,000-- 1,950 5,000 -- -- <10 2,950 <55,800,000<103030930,00012,000610,000<50<1 <2MW-5 01/10/02 17.4 6.21 33,000-- 1,461 5,000 -- -- <10 2,880 <55,900,000<1030<101,000,00012,000500,000<50<1 <1MW-5 04/16/02 20.9 6.19 35,000-- 1,317 4,700 -- --10 2,330 <55,300,000<1030<10760,00011,000470,000<50<1 <1MW-5 07/09/02 22.1 6.33 32,000-- 1,255 4,700 -- -- <10 2,500 <55,600,000<1030<10743,00011,000440,000<50<1 <1MW-5 10/02/02 22.3 6.34 29,000-- 1,267 2,500 -- -- <10 2,240 <55,900,000<103010648,40012,000440,000<50<1 <1MW-5 07/15/03 22.8 5.95 8,500-- 171 1,100 -- -- <10 1,790 <51,300,000<1030<10130,00011,000100,000<50<1 <1MW-5 11/07/03 22.5 6.00 15,500-- 590 1,800 -- -- <10 2,940 5.02,600,000<105020120,00011,000200,00080<1 <1MW-5 06/09/04 21.8 6.20 19,000-- 350 2,400 -- -- <10 2,100 <52,700,000<5050<15230,0006,500260,000<2000<1 <1MW-5 11/09/04 17.2 5.78 9,988-- 131 960 -- -- <10 2,150 <51,400,000<1060<2068,4003,920160,00080<1 <1MW-5 04/12/05 15.7 5.73 11,890-- 160 1,800 -- --12 1,200 <52,200,000<1058<10250,0004,100190,000<50<1 <1MW-5 10/04/05 21.2 5.92 16,010-- 262 2,000 -- -- <10 1,550 <52,700,000<1091<10290,00053,900300,000120<1 <1MW-5 04/11/06 18.4 5.87 13,700-- 195 1,800 -- -- <10 1,290 <52,300,000<1020<10233,00015,000240,000<50<1 <1MW-5 10/03/06 21.3 5.75 12,300-- 253 1,800 -- -- <10 1,130 <52,100,000<1017<10197,0009,300290,000<50<1 <1MW-5 04/10/07 20.3 5.75 8,750-- 138 1,500 -- -- <10 1,550 <51,700,000<1016<10209,00011,000170,000590<1 <1MW-5 11/01/07 20.1 5.76 17,130-- 190 2,600 -- -- <10 1,400 <52,700,000<1045<10380,00017,000330,000630<1 <1MW-5 10/28/08 19.7 4.80 6,230-- 76 750 -- -- <10 580 <1710,000<536<596,0003,900280,000310<1 <1MW-5 10/08/09 21.9 4.97 4,110-- 150 1,600 -- -- <10 810 <11,200,000<544<5250,00035,000410,000560<1 <1MW-5 10/22/10 21.0 5.27 9,540-- 205 1,220 -- -- 40.2 1030 1.2871,0005.67.0<5232,00047,100<500,0002,900<1 <1MW-5 10/27/11 20.7 5.20 9.32-- 199 1,170 -- --<5 712 1.3852,0008.118.4<5273,00021,200505,0005,060<1 <1MW-5 10/17/12 21.4 5.79 14.7 10,600 217 1,750 -- -- <25 735 <51,500,000<2528.9<25338,00014,800636,0001,450<1 <1MW-5 10/02/13 25.4 5.80 6,940 5,670 131 788 -- -- <10 796 <1778,000<514.5<5229,00021,400340,0001,950<1 <1MW-5 10/14/14 21.8 5.44 10,102 8,000 160 1,360 -- 44.5 < 10 757 < 11,130,00010 7 < 5327,00012,600462,0002,340< 1 < 1MW-5 10/21/15 19.4 5.80 4,510 3,930 44.3 562 0.40 43.7 < 10.0 279 < 1.0493,000< 5.0 < 5.0 < 5.0148,0004,260230,000748 < 1.0 < 1.0MW-5 10/18/16 21.3 5.64 9,499 9,460 130 1,290 3.3 9.6 < 10.0 1010 < 1.01,430,000< 5.0 8.2 < 5.0 143,00020,200442,0005,310 < 1.0 < 1.0MW-5 11/20/17 17.2 5.94 10,224 8,200 179 1,510 20 UJ 5.8 < 10.0 1070 < 1.01,770,000< 5.0 10.2 < 5.0164,00015,100498,0002,840 < 1.0 < 1.0MW-5 11/19/18 13.5 5.58 6,247-- 96 858 -- -- < 10.0 1230 < 1.0942,000< 5.0 < 5.0 < 5.068,9002,850299,0001,980 < 5.0 < 5.0MW-5D 11/13/03 16.9 6.59 2,580-- 259 1.2 -- -- <10 190 <5200,000<10 <10 <10120,000350140,000130<1 <1MW-5D 11/09/04 16.5 7.51 1,437-- 276 4.0 -- -- <10 190 <5210,000<10<10 <20104,900370150,000<50<1 <1MW-5D 11/20/17 -- 7.80 -- 1,210 354 23.0 J <20 UJ -- < 10.0 36.4 < 1.0221,000< 5.0 < 5.0 < 5.084,400273195,000190 < 1.0 < 1.0MW-6 02/01/95 14.0 5.96 5,573-- 920 420 -- -- <10 300 <5925,000<1051<10150,0005,80064,500<506.1 18MW-6 05/24/95 16.5 5.85 4,828-- 733 360 -- -- <10 300 <5808,000<1054<10120,0005,30066,300604.2 17ERMPage 7 of 1212/18/2018
APPENDIX D. HISTORICAL GROUNDWATER ANALYTICAL RESULTSWell No.Sampling DateTemperature pHSpecific ConductivityChlorideNitrateNitriteSulfateArsenicBariumCadmiumCalciumChromiumCobaltLeadMagnesiumManganeseSodiumZincPCE1,2,4-Trichloro-benzeneMCL1°CpH Unitsms/cm - 10 1 - 10 2,000 5 - 100 - 15 - - - - 5 70NC GW26.5-8.5500 250 10 1 25010 700 2- 10 - 15- 50 - 1,0000.7 70VOCs (µg/L)Metals (µg/L)Field ParametersInorganics (mg/l)Total Dissolved Solids (mg/l)MW-6 07/25/95 19.0 5.83 6,110-- 920 500 -- -- <10 400 <51,060,000<1067<10163,0006,80076,000903.3 14MW-6 10/18/95 18.6 5.54 6,748-- 909 600 -- -- <10 500 <51,140,000<1063<10172,0008,20081,000<507.1 6.8MW-6 01/24/96 14.0 5.85 5,620-- 716 450 -- -- <10 360 <5967,000<1057<10149,0007,30069,400<503.3 6.7MW-6 04/09/96 12.2 5.87 5,590-- 598 420 -- -- <10 320 <5754,000<1047<10126,0006,40057,500<502.7 6.4MW-6 07/16/96 21.4 5.74 9,610-- 897 1,200 -- -- <10 430 <51,210,000<1081<10205,00010,70082,100<503.0 7.9MW-6 10/16/96 20.7 5.53 14,270-- 1,401 1,200 -- -- <10 750 <52,570,000<10157<10328,00018,600120,000804.8 9.4MW-6 11/14/96 -- -- ---- 2,000 1,250 -- --<5 750 <51,800,000<10170<3350,00020,000110,000624 8MW-6 01/08/97 15.6 5.55 16,730-- 1,535 2,100 -- -- <10 640 <52,580,000<10226<10419,00021,400131,0003502.9 6.8MW-6 04/09/97 15.7 5.77 12,230-- 929 1,300 -- -- <10 460 <51,690,000<10159<10291,00016,70083,300<502.9 12MW-6 07/02/97 18.9 5.71 12,290-- 915 1,200 -- -- <10 480 <51,650,000<10164<10290,00020,40091,0001002.4 10MW-6 10/08/97 19.1 5.61 16,840-- 1,247 2,000 -- -- <10 700 <52,920,000<10230<10476,00023,90097,6001503.0 7MW-6 01/14/98 13.6 5.44 10,100-- 558 1,500 -- -- <10 370 <5950,000<1095<10216,00013,10057,000<501.4 3.7MW-6 04/07/98 15.9 5.83 5,862-- 345 460 -- -- <10 250 <5531,000<1060<10117,0008,30033,700801.6 1.8MW-6 07/08/98 21.6 5.65 5,350-- 358 250 -- -- <10 310 <5626,000<1061<10125,0008,33036,800<502.0 1MW-6 10/15/98 19.9 6.02 10,400-- 709 970 -- -- <10 620 <51,310,000<5109<10248,00016,60054,000<512.7 2.9MW-6 01/13/99 16.2 5.44 16,690-- 1,028 1,248 -- -- 583 820 <51,800,000<1017020.1360,00019,80072,00087.5<1 <1MW-6 04/20/99 20.6 5.99 8,200-- 613 1,574 -- -- 489 460 <11,300,000<1010013230,00013,91060,00072.74.6 5MW-6 07/07/99 21.8 5.69 9,900-- 740 550 -- -- <10 460 <51,400,000<5100<5250,00013,00059,000561.2 1.3MW-6 10/06/99 19.7 6.19 12,280-- 858 790 -- -- <10 630 <51,580,00080120<10323,00019,40060,000<502.5 6.5MW-6 01/13/00 17.5 5.71 14,440-- 858 1,200 -- -- <10 660 <51,980,000<10130<10320,00020,80074,000<505.7 6.5MW-6 04/11/00 15.9 5.95 7,170-- 423 540 -- -- <10 310 <5770,000<1030<10110,0009,80038,700<502.4 4.5MW-6 07/11/00 21.0 5.94 6,220-- 376 420 -- -- <10 340 <5652,000<1050<10100,0008,20035,100803.1 5.6MW-6 10/03/00 20.4 5.77 8,850-- 580 650 -- -- <10 500 <51,200,0001090<10140,00012,00044,000<50<1 4.8MW-6 01/03/01 14.5 5.84 9,710-- 555 650 -- -- <10 480 <5998,000<1070<10155,00012,00047,000<50<1 5MW-6 04/11/01 18.0 5.74 9,230-- 617 690 -- -- <10 460 <51,190,000<1090<10170,00013,00064,000<503.9 5.7MW-6 07/02/01 16.9 5.75 8,140-- 790 770 -- --26 960 <1880,0009620054190,00014,00082,0002401.1 5.5MW-6 10/02/01 18.4 5.77 12,870-- 781 1,000 -- -- <10 710 <51,900,000<1011010270,00021,00073,000<503.3 6.8MW-6 01/10/02 16.3 5.83 12,400-- 818 1,100 -- -- <10 740 <51,600,000<1011010260,00018,00079,000<503.6 6.9MW-6 04/16/02 19.0 5.91 6,870-- 316 460 -- -- <10 340 <5640,000<1060<1099,0007,20055,000<501.8 4.4MW-6 07/09/02 18.8 5.85 6,660-- 388 510 -- -- <10 400 <5740,000<1070<10126,0008,60062,000<502.8 4.2MW-6 10/02/02 19.9 5.80 8,970-- 637 930 -- -- <10 619 <51,200,000<109010193,00015,00079,000<504.3 6MW-6 07/15/03 20.7 5.62 3,150-- 196 250 -- -- <10 290 <5350,000<1030<1060,0003,88031,000501.2 3.2MW-6 11/07/03 19.2 5.86 8,627-- 544 840 -- -- <10 1,100 <51,100,000<1090<10210,00013,00053,0002502.0 2.5MW-6 06/09/04 17.0 5.84 5,600-- 340 520 -- -- <10 <1000 <5800,000<5034<15140,00014,000100,000<20004.1 3.4MW-6 11/09/04 17.3 5.72 7,637-- 396 570 -- -- <10 590 <5910,000<1050<20149,0009,40070,000<505.6 6.5MW-6 04/12/05 14.3 5.73 3,790-- 201 390 -- -- <10 400 <5550,000<1033<1098,0004,90042,000<504.1 3.4MW-6 10/04/05 19.3 5.64 12,430-- 929 1,500 -- -- <10 950 <52,200,000<10140<10327,00026,400170,000<5020 35MW-6 04/11/06 16.1 7.93 7,870-- 277 930 -- -- <10 640 <51,100,000<1060<10182,00012,00088,000<506.6 5.8MW-6 10/03/06 19.9 5.65 9,190-- 414 1,200 -- -- <10 773 <51,500,000<1088<10229,00018,000140,000<5014 29MW-6 04/10/07 18.6 5.71 6,020-- 155 740 -- -- <10 620 <5850,000<1078<10127,00010,00083,0001405.3 3.5MW-6 11/01/07 17.7 5.96 14,200-- 460 1,600 -- -- <10 730 <51,900,000<10260<10250,00023,000190,0001806.8 8.5ERMPage 8 of 1212/18/2018
APPENDIX D. HISTORICAL GROUNDWATER ANALYTICAL RESULTSWell No.Sampling DateTemperature pHSpecific ConductivityChlorideNitrateNitriteSulfateArsenicBariumCadmiumCalciumChromiumCobaltLeadMagnesiumManganeseSodiumZincPCE1,2,4-Trichloro-benzeneMCL1°CpH Unitsms/cm - 10 1 - 10 2,000 5 - 100 - 15 - - - - 5 70NC GW26.5-8.5500 250 10 1 25010 700 2- 10 - 15- 50 - 1,0000.7 70VOCs (µg/L)Metals (µg/L)Field ParametersInorganics (mg/l)Total Dissolved Solids (mg/l)MW-6 10/28/08 17.5 5.80 14,800-- 300 1,400 -- -- <10 680 <11,600,000<5120<5210,00016,000180,0004313 19MW-6 10/08/09 18.6 5.40 13,000-- 340 1,500 -- -- <10 820 <11,700,000<5120<5220,00017,000230,0004516 35MW-6 10/22/10 18.9 5.40 12,800-- 424 1,820 -- --77 997 2.72,090,0007.6109<5268,00020,200<500,000176 14.5 48.9MW-6 10/27/11 19.1 5.44 8.24-- 193 987 -- --<5 567 <11,200,000<5114<5154,0009,060271,00067.3 10.8 31.6MW-6 10/17/12 19.6 5.86 13.9 10,200 315 1,670 -- -- <25 865 <51,990,000<25155<25190,00013,200337,00091 13.4 48.9MW-6 10/02/13 21.0 6.00 4,310 3,620 108 550 -- -- <10 481 <1642,000<522.1<567,5002,360180,00057.33.3 1.4MW-6 10/14/14 20.4 5.48 6,9085670 156 871 -- 37.1 < 20 874 < 2923,000< 1011.3< 10132,000970< 500,0001254.8 < 1MW-6 10/20/15 19.5 5.70 5,6634320 114 654 0.47 31.4 < 10.0 493 < 1.0667,000< 5.07.4< 5.0120,000919206,00029.96.5 < 1.0MW-6 10/18/16 19.9 5.46 4,1274260 95.2 582 <1 25.5 < 10.0 509 < 1.0508,000< 5.06.6< 5.092,300814165,00024.96.8 < 1.0MW-6 11/21/17 16.5 5.67 5,3703400 88.1 721 <20 27.1 < 10.0 456 < 1.0563,000< 5.026.5< 5.0116,0001210237,00061.84.4 < 1.0MW-6 11/20/18 11.7 5.64 4,549-- 88 575 -- -- < 10.0 522 < 1.0553,000< 5.0< 5.0< 5.0 124,000716222,000591 < 5.0 < 5.0MW-7 07/16/03 20.0 6.46 336-- 15.0 <0.0005 -- -- <10 <50 <528,000<10 <10 <1026,000<5011,000 <50<1 <1MW-7 06/10/04 17.6 6.67 320-- 2.80 0.0014 -- -- <10 <1000 <527,000<50 <10 <1523,000<50 31,000 <2000<1 <1MW-7 04/11/05 16.7 6.93 303-- 14.0 0.67 -- -- <10 <50 <528,000<10 <10 <1024,000<50 10,000 <50<1 <1MW-7 04/11/06 16.8 6.69 305-- 19.0 0.25 -- -- <10 <50 <530,000<10 <10 <1026,700<50 14,000 <50<1 <1MW-7 04/10/07 18.7 6.57 357-- 15.0 0.40 -- -- <10 310 <529,000<10 <10 <1026,100<50 13,000 180<1 <1MW-7 10/28/08 15.3 6.40 640-- 17.0 0.43 -- -- <10 45 <129,000<10 <10 <526,00087 12,000 30<1 <1MW-7 10/07/09 17.3 6.38 415-- 20.0 0.60 -- -- <10 44 <135,000<5 <5 <528,00021 10,000 30<1 <1MW-7 10/21/10 16.7 6.34 482-- 18.9 48.2 -- --<5 48.4 <133,800<5 <5 <528,200130 10,200 <10<1 <1MW-7 10/26/11 17.0 5.99 404-- 22.4 0.26 -- --<5 45.4 <139,000<5 <5 <528,80078.8 11,900 11.6<1 <1MW-7 10/17/12 17.0 6.42 0289 23.1 0.12 -- --<5 51.2 <134,100<5 <5 <527,40066 11,600 <10<1 <1MW-7 10/02/13 17.3 6.60 451295 23.3 0.31 -- -- <10 48.1 <136,400<5 <5 <529,10024.9 12,500 12.7<1 <1MW-7 10/15/14 16.9 6.37 514.7322 24.5 0.47 -- -- < 10 49.2 < 140,500< 5< 5< 532,20014.8 10,800 < 10< 1 < 1MW-7 10/20/15 16.8 6.30 452340 22.8 0.28 < 0.02 -- < 10.0 54 < 1.040,400< 5.0 < 5.0 < 5.034,40031.4 12,800 < 10.0 < 1.0 < 1.0MW-7 10/19/16 16.6 6.31 518313 23.2 0.063 < 0.02 -- < 10.0 61.9 < 1.037,700< 5.0 < 5.0 < 5.036,000101 15,700 < 10.0 < 1.0 < 1.0MW-7 11/21/17 14.5 6.82 486280 21.2 0.23 < 0.02 -- < 10.0 52.6 < 1.034,900< 5.0 < 5.0 < 5.030,300165 11,500 < 10.0 < 1.0 < 1.0MW-7 11/20/18 17.0 6.40 479-- 18.2 0.11 -- -- < 10.0 52.1 < 1.034,000< 5.0 < 5.0 < 5.032,60096.3 12,900 < 10.0 < 5.0 < 5.0MW-8 11/07/03 19.9 6.65 496-- 20.0 <1 -- -- <10 100 <534,000<1020<1026,000420 12,000 210<1 <1MW-8 11/09/04 14.3 6.81 157-- 22.0 0.51 -- -- <10 60 <542,000<10 <10 <2042,800<50 14,000 <50<1 <1MW-8 10/04/05 21.7 6.63 519-- 24.0 0.78 -- -- <10 <50 <535,000<10 <10 <1044,400<50 9,000 <50<1 <1MW-8 10/03/06 17.5 6.50 440-- 23.0 0.66 -- -- <10 <50 <530,000<10 <10 <1038,100<50 11,000 <50<1 <1MW-8 11/01/07 17.3 6.82 479-- 19.0 0.58 -- -- <10 <50 <532,000<10<10 <1038,000150 12,000 <50<1 <1MW-8 10/28/08 16.1 6.50 833-- 27.0 0.47 -- -- <10 26 <133,000<5 <5 <542,000140 13,000 <30<1 <1MW-8 10/07/09 17.6 6.49 523-- 23.0 0.67 -- -- <10 28 <134,000<5 <5 <535,00033 10,000 <30<1 <1MW-8 10/21/10 17.3 6.45 648-- 26.4 0.33 -- --<5 28.1 <137,600<5 <5 <545,80050 12,300 <10<1 <1MW-8 10/26/11 17.4 5.96 515-- 25.9 0.20 -- --<5 32.2 <139,400<56.9<546,800141 15,300 10.3<1 <1MW-8 10/17/12 17.5 6.78 746393 32.9 0.21 -- --<5 44 <142,500<513.9<555,000242 16,000 16.2<1 <1MW-8 10/02/13 17.5 6.80 600395 27.1 0.18 -- -- <10 50.1 <138,5005.535.4<547,900366 13,300 19.1<1 <1MW-8 10/15/14 17.1 6.48 640390 28.9 0.22 -- -- < 10 29.4 < 138,700< 5< 5< 547,40081.2 12,100 < 10< 1 < 1ERMPage 9 of 1212/18/2018
APPENDIX D. HISTORICAL GROUNDWATER ANALYTICAL RESULTSWell No.Sampling DateTemperature pHSpecific ConductivityChlorideNitrateNitriteSulfateArsenicBariumCadmiumCalciumChromiumCobaltLeadMagnesiumManganeseSodiumZincPCE1,2,4-Trichloro-benzeneMCL1°CpH Unitsms/cm - 10 1 - 10 2,000 5 - 100 - 15 - - - - 5 70NC GW26.5-8.5500 250 10 1 25010 700 2- 10 - 15- 50 - 1,0000.7 70VOCs (µg/L)Metals (µg/L)Field ParametersInorganics (mg/l)Total Dissolved Solids (mg/l)MW-8 10/20/15 17.1 6.40 520385 24.9 0.64 < 0.02 -- < 10.0 30.3 < 1.041,800< 5.0 < 5.0 < 5.050,10036.3 13,800 < 10.0 < 1.0 < 1.0MW-8 10/19/16 17.3 6.63 624375 26.0 0.35 < 0.02 -- < 10.0 30.8 < 1.042,300< 5.0 < 5.0 < 5.051,40034.2 13,500 < 10.0 < 1.0 < 1.0MW-8 11/21/17 15.2 6.71 593359 24.4 0.27 < 0.02 -- < 10.0 28.9 < 1.039,200< 5.0 < 5.0 < 5.045,80058.6 12,600 < 10.0 < 1.0 < 1.0MW-8 11/20/18 11.6 6.65 512-- 22.4 0.19 -- -- < 10.0 27.3 < 1.035,200< 5.0 < 5.0 < 5.042,60071.9 11,200 < 10.0 < 5.0 < 5.0MW-8 11/20/18 11.6 6.65 512-- 22.6 0.18 -- -- < 10.0 24.3 < 1.034,500< 5.0 < 5.0 < 5.041,40050.2 10,900 < 10.0 < 5.0 < 5.0MW-9 07/16/03 20.4 6.49 440-- 26.0 3.3 -- -- <10 <50 <539,000<10 <10 <1040,000160 12,000 <50<1 <1MW-9 06/10/04 17.3 6.54 410-- 20.0 1.0 -- -- <10 <1000 <532,000<50 <10 <1533,000140 11,000 <2000<1 <1MW-9 04/11/05 17.1 6.59 393-- 19.0 0.88 -- -- <10 <50 <531,000<10 <10 <1032,000<50 9,700 <50<1 <1MW-9 04/11/06 16.6 6.63 402-- 25.0 0.79 -- -- <10 <50 <536,000<10 <10 <1032,500<50 12,000 <50<1 <1MW-9 04/10/07 18.1 6.83 425-- 21.0 1.0 -- -- <10 <50 <532,000<10 <10 <1032,700<50 11,000 <50<1 <1MW-9 10/28/08 16.1 6.50 663-- 24.0 0.71 -- -- <10 24.0 <130,000<5 <5 <531,00040 11,000 <30<1 <1MW-9 10/07/09 17.6 6.48 476-- 25.0 0.48 -- -- <10 26.0 <135,000<5 <5 <544,00099 12,000 <30<1 <1MW-9 10/21/10 17.5 6.50 555-- 24.4 0.50 -- --<5 30.8 <134,600<5 <5 <535,600101 10,400 <10<1 <1MW-9 10/26/11 17.4 5.97 432-- 25.6 0.54 -- --<5 31.8 <135,600<5 <5 <535,000286 12,500 <10<1 <1MW-9 10/17/12 17.8 6.82 699363 35.6 1.1 -- --<5 42.1 <141,700<5 <5 <544,200500 14,300 15.8<1 <1MW-9 10/02/13 17.8 6.70 540371 27.4 0.6 -- -- <10 32.0 <137,800<5 <5 <537,000141 11,800 <10<1 <1MW-9 10/15/14 17.1 6.44 557345 26.9 0.50 -- -- < 10 30.8 < 136,300< 5< 5< 537,300107 10,800 < 10< 1 < 1MW-9 10/20/15 18.0 6.40 596.4369 32.4 1.0 < 0.02 -- < 10.0 44.4 < 1.041,800< 5.0 < 5.0 < 5.043,500668 13,100 < 10.0 < 1.0 < 1.0MW-9 10/19/16 18.0 6.19 569.4330 27.0 0.64 < 0.02 -- < 10.0 35.6 < 1.040,200< 5.0 < 5.0 < 5.040,60052.9 12,200 < 10.0 < 1.0 < 1.0MW-9 11/21/17 15.1 6.70 534312 24.5 0.56 < 0.02 -- < 10.0 30.6 < 1.037,400< 5.0 < 5.0 < 5.036,200119 11,800 < 10.0 < 1.0 < 1.0MW-9 11/20/18 17.7 6.64 480-- 19.1 0.45 -- -- < 10.0 27.1 < 1.033,200< 5.0< 5.0 < 5.034,40034.8 10,500 < 10.0 < 5.0 < 5.0MW-10 11/07/03 19.8 6.56 536-- 45 5.0 -- -- <10 110 <540,000<10 <10 <1037,000<50 13,000 80<1 <1MW-10 11/09/04 16.7 6.51 529-- 45 2.4 -- -- <10 70 <542,000<10 <10 <2033,600<50 14,000 <50<1 <1MW-10 10/04/05 19.7 6.84 519-- 54 2.5 -- -- <10 62 <544,000<10 <10 <1036,600<50 15,000 <50<1 <1MW-10 10/03/06 17.9 6.66 500-- 48 1.5 -- -- <10 <50 <542,000<10 <10 <1034,200<50 13,000 <50<1 <1MW-10 11/01/07 19.0 6.79 505-- 39 1.2 -- -- <10 76 <541,000<1013<1033,000220 14,000 <50<1 <1MW-10 10/28/08 16.9 6.50 762-- 42 89 -- -- <10 100 <198,000<5 <5 <538,00047,000 41,000 34<1 <1MW-10 10/07/09 18.6 6.53 487-- 41 0.80 -- -- <10 42 <139,000<5 <5 <531,00022 12,000 <30<1 <1MW-10 10/21/10 18.0 6.51 600-- 43 0.53 -- --<5 49.1 <144,300<5 <5 <533,900101 13,300 <10<1 <1MW-10 10/26/11 18.1 6.34 440-- 35 0.49 -- --<5 43.6 <141,500<5 <5 <531,40076 14,400 14.3<1 <1MW-10 10/17/12 18.1 6.80 668341 48 0.44 -- --<5 51 <144,600<5 <5 <535,100129 15,300 13.9<1 <1MW-10 10/02/13 18.0 6.80 548369 48 0.52 -- -- <10 43.4 <141,300<5 <5 <531,00044.9 13,300 11.8<1 <1MW-10 10/15/14 17.5 6.55 558343 40.8 0.37 -- -- < 10 46.7 < 139,900< 5< 5< 530,500285 12,000 < 10< 1 < 1MW-10 10/21/15 17.6 6.50 566.2158 48.9 0.65 < 0.02 -- < 10.0 49.7 < 1.045,600< 5.0 < 5.0 < 5.034,700147 13,800 < 10.0 < 1.0 < 1.0MW-10 10/19/16 17.3 6.69 609384 54.7 0.54 < 0.02 -- < 10.0 55 < 1.049,600< 5.0 < 5.0 < 5.036,600165 14,300 < 10.0 < 1.0 < 1.0MW-10 10/19/16 (DUP)364 57.3 0.55 < 0.02 -- < 10.0 55.3 < 1.050,100< 5.0 < 5.0 < 5.036,900166 14,500 < 10.0 < 1.0 < 1.0MW-10 11/21/17 15.7 8.73 529329 40.8 0.51 < 0.02 -- < 10.0 46.2 < 1.039,700< 5.0 < 5.0 < 5.031,30098.9 12,600 < 10.0 < 1.0 < 1.0MW-10 11/20/18 12.0 6.58 641-- 73.8 2.5 -- -- < 10.0 56.3 < 1.052,300< 5.0 < 5.0 < 5.034,000134 15,800 < 10.0 < 5.0 < 5.0ERMPage 10 of 1212/18/2018
APPENDIX D. HISTORICAL GROUNDWATER ANALYTICAL RESULTSWell No.Sampling DateTemperature pHSpecific ConductivityChlorideNitrateNitriteSulfateArsenicBariumCadmiumCalciumChromiumCobaltLeadMagnesiumManganeseSodiumZincPCE1,2,4-Trichloro-benzeneMCL1°CpH Unitsms/cm - 10 1 - 10 2,000 5 - 100 - 15 - - - - 5 70NC GW26.5-8.5500 250 10 1 25010 700 2- 10 - 15- 50 - 1,0000.7 70VOCs (µg/L)Metals (µg/L)Field ParametersInorganics (mg/l)Total Dissolved Solids (mg/l)MW-11 07/16/03 24.1 6.38 144-- 4.0 0.92 -- -- <10 90 <529,000<10 <10 <10 5,000 150 8,000 <50<1 <1MW-11 06/09/04 18.5 5.93 2,400-- 4.9 0.40 -- -- <10 <1000 <520,000<50 <10 <15 5,000 240 8,000 <2,000<1 <1MW-11 04/11/05 15.4 6.21 90-- 4.0 1.4 -- -- <10 <50 <5 6,400 <10 <10 <10 2,800 <50 6,900 <50<1 <1MW-11 04/11/06 16.5 6.53 186-- 5.4 1.0 -- -- <10 80 <520,000<10 <10 <10 4,100 230 7,500 <50<1 <1MW-11 04/10/07 18.7 5.90 97-- 4.9 1.2 -- -- <10 60 <5 8,700 <10 <10 <10 3,350 <50 7,200 70<1 <1MW-11 10/29/08 17.6 6.00 266-- 5.0 1.8 -- -- <10 69 <1 9,400 <10 <10 <5 3,900 41 8,700 <30<1 <1MW-11 10/08/09 18.6 6.14 147-- 5.3 1.6 -- -- <10 80 <1 10,000 <10 <10 <5 4,400 37 7,700 <30<1 <1MW-11 10/21/10 17.2 6.09 151-- <5 2.4 -- --<5 82.3 <1 10,100 <5 <5 <5 4,480 25.1 6,570 <10<1 <1MW-11 10/27/11 19.2 5.89 162-- <5 2.7 -- --<5 84.5 <1 10,400 <5 <5 <5 4,440 27.4 6,670 <10<1 <1MW-11 10/18/12 16.7 6.46 239110 4.6 2.6 -- --<5 95.4 <1 11,000 <5 <5 <5 5,050 27.1 7,950 <10<1 <1MW-11 10/03/13 19.4 7.70 136109 6.0 2.3 -- --<5 78.8 <1 10,600 <5 <5 <5 4,410 30.5 7,330 <10<1 <1MW-11 10/15/14 17.3 5.86 145.9116 4.3 2.9 -- -- < 10 91.1 < 1 10,900 < 5 < 5 < 5 4,960 24.6 8,020 < 10< 1 < 1MW-11 10/21/15 18.2 5.90 137126 4.6 3.2 < 20 -- < 10.0 93.0 < 1.0 11,300 < 5.0 < 5.0 < 5.0 4,950 32.0 8,440 < 10.0 < 1.0 < 1.0MW-11 10/18/16 16.7 6.02 141113 4.3 2.6 J < 20 -- < 10.0 99.0 < 1.0 12,100 < 5.0 < 5.0 < 5.0 5,180 44.2 8,580 < 10.0 < 1.0 < 1.0MW-11 11/20/17 15.0 5.87 28198 4.0 3.2 < 20 -- < 10.0 84.7 < 1.0 9,040 < 5.0 < 5.0 < 5.0 4,580 7.2 8,240 < 10.0 < 1.0 < 1.0MW-11 11/20/18 10.7 5.93 90-- 3.9 4.6 -- -- < 10.0 55.8 < 1.0 4,690 < 5.0 < 5.0 < 5.0 2,490 < 5.0 8,060 < 10.0 < 5.0 < 5.0MW-11D 08/05/03 21.9 7.15 2,778-- 405 <0.1 -- -- <10 <50 <5330,000<10 <10 <1080,000400130,000<50<1 <1F-01S 11/11/96 -- -- ---- 4.9 0.22 -- --<5 10 <5 23,000 <10 <10 <3 27,000 <10 7,400 <20<3 <5F-02S 11/12/96 -- -- ---- <1 0.21 -- --<5 42 <5 19,000 <10 <10 <3 12,000 <10 12,000 <20-- --F-03D 11/20/96 42-FT -- ---- 28.7 0.57 -- --<5 69 <5 33,000 <10 <10 <3 20,000 28 10,000 <20<3 <10F-03D 11/20/96 128-FT -- ---- 15.3 -- -- --<5 84 <5 45,000 <10 <102727,000 390 9,400 530<3 <10F-03S 11/12/96 -- -- ---- 32.6 1.13 -- --<5 100 <5 39,000 <10 <10 4.6 22,000 440 11,000 <20<3 <10F-04D 11/21/96 -- -- ---- 128 0.03 -- --<5 70 <5340,000<10 <10 6.9170,00055095,000170-- --F-05D 11/14/96 -- -- ---- 7.7 3.75 -- --<5 45 <5 51,000 <10 <10 <3 46,000 32 9,900 <20<3 <10F-05S 11/13/96 -- -- ---- 6.5 3.91 -- --<5 56 <5 48,000 <10 <10 <20 46,000 99 16,000 <20<3 <10F-06C 11/21/96 71-FT -- ---- 10.8 0.12 -- --<5 17 <5 20,00022<10 41 11,000 48 9,600 54<3 <5F-06C 11/21/96 92-FT -- ---- -- -- -- ---- -- ---- -- -- -- -- -- -- --<3 <5F-07D 11/21/96 -- -- ---- 3,600 1,560 -- --<5 790 <53,100,000<10 <10 <3630,000930310,000<20<3 <50F-08D 11/21/96 72-FT -- ---- 3,200 2,600 -- --<5 720 <53,200,000<10 <10 <3580,000480350,00036<3 <100F-08D 11/21/96 185-FT -- ---- -- -- -- ---- -- ---- -- -- -- -- -- -- --<3 <5ERMPage 11 of 1212/18/2018
APPENDIX D. HISTORICAL GROUNDWATER ANALYTICAL RESULTSWell No.Sampling DateTemperature pHSpecific ConductivityChlorideNitrateNitriteSulfateArsenicBariumCadmiumCalciumChromiumCobaltLeadMagnesiumManganeseSodiumZincPCE1,2,4-Trichloro-benzeneMCL1°CpH Unitsms/cm - 10 1 - 10 2,000 5 - 100 - 15 - - - - 5 70NC GW26.5-8.5500 250 10 1 25010 700 2- 10 - 15- 50 - 1,0000.7 70VOCs (µg/L)Metals (µg/L)Field ParametersInorganics (mg/l)Total Dissolved Solids (mg/l)F-08S 11/14/96 -- -- ---- 1.1 0.57 -- --<5 52 <5 11,000 <10 <10 <3 17,000 62 3,800 <20<3 <10F-08S 06/28/01 -- -- ---- 3.80 0.6 -- --<5 57 <1 13,000 4.6 <5 <3 22,000 92 4,700 <10-- --T-01 11/13/96 -- -- ---- -- 0.96 -- ---- -- ---- -- -- -- -- -- -- --<3 <5T-02 11/12/96 -- -- ---- 20.3 1.36 -- --<5 140 <5 90,000 <10 <10 <3 25,000 560 7,700 <3<3 <10T-02 06/27/01 -- -- ---- 3.9 1.8 -- --<5 100 <1 61,000 <2 <5 <3 11,000 20 1,700 20-- --T-05 06/27/01 -- -- ---- 130 170 -- --<5 110 <1200,000<2 11 <3110,00081 24,000 24-- --T-06S 11/13/96 -- -- ---- 112 6.96 -- --<5 130 <5 62,000 <10 <10 <3 29,000 150 18,000 <20-- --T-06S 06/28/01 -- -- ---- 75 2.5 -- --<5 110 <1 50,000 <2 <5 <3 23,000 8.1 11,000 16-- --T-06S 11/21/17 -- -- --162 6.3 1.3 < 0.020 -- 48.3 51.7 < 1.0 27,800 < 5.0 < 5.0 < 5.0 10,900 < 5.0 6,280 79.4-- --T-06S 11/21/17 -- -- --143 6.5 1.3 < 0.020 -- 46.8 52.6 < 1.0 29,300 < 5.0 < 5.0 < 5.0 11,400 < 5.0 6,670 80.4-- --T-06D 11/14/96 -- -- ---- 4,400 2,300 -- --<5 2,700 242,100,000<250110<31,200,0001,700 150,000 7,500-- --T-06D 12/06/96 -- -- ---- 4,830 860 -- --8.4 3,600 39--<20190<3 <1 2,500 -- 19,000-- --T-06D 06/27/01 -- -- ---- 3,200 <0.1 -- --<5 7,900 2801,600,000<2480<31,200,00013,000260,00039,000-- --T-06D 11/21/17 -- -- -- 1,220 79 107 < 20.0 -- < 10.0 57.8 < 1.0206,000 40.6 35< 5.090,70070433,3001,300-- --T-07 11/12/96 -- -- ---- 46.4 2.16 -- --<5 96 5.2 33,000 <10 14 <3 31,000 500 15,000 3,000T-07 06/28/01 -- -- ---- 36.0 6.8 -- --<5 120 4.6 31,000 2 36 <3 28,000 770 13,000 3,600-- --T-08D 08/28/01 -- -- ---- 550 13 -- --<5 240 <1180,00010 <5 <391,00031043,00010-- --T-08D 11/21/17 -- -- --1140 609 0.079 0.62 -- < 10.0 238 < 1.0 65,100 < 5.0 < 5.0 < 5.0 5,520 15414,000< 10.0-- --1 MCL = Maximum Co--amina-- Levels (USEPA website November 2013)-- = Not Tested2 NC GW = North Carolina Groundwater Standards (15A NCAC Subchapter 2L.0202 - Groundwater Classification and Standards, amended 4/1/2013)ERMPage 12 of 1212/18/2018
TABLE 1. OFF-SITE SUPPLY WELL SAMPLE ANALYTICAL DATASamples Collected from Supply Wells in the River Hills SubdivisionProperty IDSample Date (mm/dd/yy):Arsenic (mg/L)Cadmium (mg/L)Manganese (mg/L)Zinc (mg/L)Chloride (mg/L)Nitrate (mg/L)Tetrachloro-ethene (ug/L)North Carolina GW Std 0.05 0.005 0.05 2.1 250 10 0.7Site-Specific Background 0.05 0.005 0.109 2.1 250 10 NLLot #95 07/11/01 < 0.005 < 0.001 0.040 < 0.01 9.6 0.61 < 1.0Lot #100 07/12/01 < 0.005 < 0.001 0.025 0.024 5.2 0.68 < 1.0Lot # 101 07/12/01 < 0.005 < 0.001 < 0.005 0.012 4.9 0.85 < 1.0Lot #102 07/12/01 < 0.005 < 0.001 0.048 0.01 8.0 0.56 < 1.0Lot #115 07/17/01 < 0.005 < 0.001 < 0.005 < 0.01 5.7 1.4 < 1.0Lot #116 07/17/01 < 0.005 < 0.001 < 0.005 < 0.01 5.1 1.0 < 1.0Lot #123 07/17/01 < 0.005 < 0.001 < 0.005 0.013 15 1.3 < 1.0Lot #117 07/20/01 < 0.005 < 0.001 < 0.005 < 0.01 5.7 1.3 < 1.0Revised: 12/18/2018 - 2:11 PM

The business of sustainability

APPENDIX E HISTORICAL SURFACE WATER ANALYTICAL RESULTS

APPENDIX E. SURFACE WATER DATAWell No.Sampling DateChlorideNitrateNitriteArsenicBariumCadmiumCalciumChromiumCobaltLeadMagnesiumManganeseSodiumZincBODCODAmmonia as NNC 2B Std.-Aquatic life250 10*0.050 1* 0.002 - 0.050 - 0.025 - 0.05* - 0.050- - -US-M11/18/96 -- -- --ND 0.028 ND 14 ND ND ND 5.2 ND -- ND <2.0 <10 --US-M12/05/96 18.9 1.77 NDND 0.029 ND 14 ND ND ND 5.30.096-- ND <2.0 <10 0.10US-M12/16/96 15.1 0.87 --ND 0.033 ND 12 ND ND ND 4.90.120-- ND 3.50 10 --US-M12/16/96 14.8 0.85 --ND 0.032 ND 12 ND ND ND 4.80.110-- ND <2.0 14 --US-M01/06/97 13.5 1.48 NDND 0.048 ND 13 ND ND ND 5.60.220-- ND <2.0 29 --US-M01/06/97 16.9 5.25 0.030ND 0.048 ND 16 ND ND ND 6.10.230-- ND 2.55 31 --Upstream 06/18/01 24.0 7.60 -- 0.0092 0.039 ND 18 0.0023 ND ND 6.00.17030.00 0.0160-- -- --Upstream 10/21/10 33.1 -- NDND -- -- -- -- -- -- ---- 0.0614-- -- --Upstream 10/03/13 29.6 -- 0.022ND -- -- -- -- -- ND ---- ---- -- --Upstream 10/14/14 27.4 -- 0.060ND -- ND -- -- -- -- --28.3 0.0147-- ND --Upstream 10/21/15 30.0 8.50 NDND 0.0355 ND 19.6 ND ND ND 11.70.11428.0 0.0140-- ND --Upstream 10/19/16 31.7 6.60 NDND 0.0438 ND 19 ND ND ND 11.60.14029.2 0.0160-- ND --Upstream 11/21/17 29.0 7.50 NDND 0.0240 ND 16.6 ND ND ND 11.00.06225.1 0.0128-- ND --Upstream 11/20/18 12.2 2.50 -- < 0.001 0.0401 < .001 13 < .005 < .005 < .005 6.60.09211.0< .01 ------Midstream 11/20/18 12.3 4.50 -- < 0.001 0.0457 < 0.001 16.3 < 0.005 < 0.005 < 0.005 7.120.11812.8 0.0594-- -- --NPDES-M 11/18/96 27.0 1.78 NDND 0.029 ND 14 ND ND ND 5.30.140--0.074<2.0 <10 0.12NPDES-M dup 11/18/96 27.4 1.86 NDND 0.028 ND 14 ND ND ND 5.20.140-- ND 2.50 <10 0.13NPDES-M 12/05/96 19.1 1.75 NDND 0.029 ND 13 ND ND ND 5.20.090-- ND <2.0 <10 0.07NPDES-M 12/16/96 14.9 0.85 --ND 0.033 ND 12 ND ND ND 4.90.110-- ND <2.0 16 --NPDES-M 01/06/97 15.7 4.72 0.03ND 0.052 ND 17 ND ND ND 6.20.260-- ND 2.10 35 --DS-M11/18/96 29.4 6.70 0.02ND 0.030 ND 16 ND ND ND 6.0 0.030 -- 0.030 <2.0 11.5 0.13DS-M12/05/96 29.0 2.17 0.04ND 0.029 ND 14 ND ND ND 5.40.087-- 0.021 <2.0 <10 0.52DS-M dup 12/05/96 19.0 1.74 NDND 0.029 ND 13 ND ND ND 5.20.089-- ND <2.0 <10 0.07DS-M12/16/96 15.9 1.60 --ND 0.033 ND 13 ND ND ND 5.10.120-- ND <2.0 12 --DS-M01/06/97 15.9 2.87 0.020ND 0.047 ND 15 ND ND ND 5.80.220-- 0.0270 2.06 29 --Downstream 06/18/01 27.0 9.90 --ND 0.036 ND 20 ND ND ND 6.30.17028.00 0.0490-- -- --Downstream 10/21/10 33.1 -- NDND -- -- -- -- -- -- ---- 0.0448-- -- --Downstream 10/03/13 30.2 -- NDND -- -- -- -- -- ND ---- ---- -- --Downstream 10/14/14 27.3 -- 0.021ND -- -- -- -- -- ND --29.3 ---- ND --Downstream 10/21/15 30.1 8.60 0.033ND 0.0356 ND 20.4 ND ND ND 11.70.107027.9 0.0186-- ND --Downstream 10/19/16 31.7 7.80 0.029ND 0.0377 ND 19.1 ND ND ND 11.50.096528.6 0.0154-- ND --Downstream 11/21/17 28.6 8.10 NDND 0.0258 ND 18.2 ND ND ND 11.70.061926.7 0.0145-- ND --Downstream 11/20/18 12.0 4.10 -- < 0.001 0.0691 < 0.001 15.9 0.0057 < 0.005 < 0.005 7.60.301012.6 0.0249-- -- --* - Taken from EPA 822-Z-99-001 "National Recommended Water Quality Criteria - Correction amended April 1999. Human Health for Consumption of Water and Organism.Other (mg/L)Inorganics (mg/l)Metals (mg/L)

The business of sustainability

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