WS-3810_12543_CA_MRP_20230512

TABLE OF CONTENTS

1.0 EXECUTIVE SUMMARY ................................................................................................................. 1
2.0 SITE INFORMATION ..................................................................................................................... 2
2.1 SITE IDENTIFICATION ................................................................................................................ 2
2.2 CONTACTS INFORMATION ......................................................................................................... 2
2.3 SITE HYDROLOGY & GEOLOGY ................................................................................................... 3
2.4 PREVIOUS REPORTS ................................................................................................................. 4
2.5 RELEASE INFORMATION ............................................................................................................ 4
2.6 CORRECTION ACTION PLAN (CAP) ............................................................................................. 4
2.7 RECEPTORS IMPACTED BY RELEASE ............................................................................................. 5
3.0 ASSESSMENT SUMMARY ............................................................................................................. 5
3.1 SUMMARY OF ANALYTICAL DATA FOR SOIL .................................................................................. 5
3.2 EXTENT OF SOIL CONTAMINATION FROM CSA .............................................................................. 6
3.3 SUMMARY OF ANALYTICAL DATA FOR GROUNDWATER FROM CSA .................................................. 6
3.4 HYDRAULIC CONDUCTIVITY DATA FROM THE CSA ......................................................................... 7
4.0 RECEPTOR INFORMATION ............................................................................................................ 7
5.0 CAP SUMMARY ............................................................................................................................ 9
5.1 CAP ...................................................................................................................................... 9
5.2 CAP IMPLEMENTATION ............................................................................................................ 9
5.3 ON-SITE DISCHARGES .............................................................................................................. 9
5.4 EXPLANATION OF CLEANUP GOALS ............................................................................................. 9
6.0 GROUNDWATER SAMPLING ......................................................................................................... 9
6.1 MONITORING WELL SAMPLING ................................................................................................. 9
6.2 POTABLE WATER SUPPLY WELL SAMPLING ................................................................................ 11
6.3 DESCRIPTION OF CURRENT GROUNDWATER CONTAMINATION ...................................................... 11
6.4 REMOVAL OF ORC SOCKS ....................................................................................................... 12
6.5 VERTICAL EXTENT OF GROUNDWATER CONTAMINATION .............................................................. 12
7.0 MNA & SOURCE DEPLETION ....................................................................................................... 12
7.1 SOIL CONTAMINANT MASS REMOVAL ....................................................................................... 12
7.2 GROUNDWATER – TOTAL MASS OF CONTAMINANT .................................................................... 12
8.0 CONCLUSIONS ........................................................................................................................... 13
9.0 RECOMMENDATIONS ................................................................................................................ 14
10.0 CLOSURE ................................................................................................................................ 15

Page I

FIGURES:

1. Topographic Map
2. Adjoining Properties and Supply Wells
3. Site Map
4. Soil and Groundwater Cross Section Location Map
5. Soil Cross Sections from 2000
6. Potentiometric Surface Map (03/30/2023)
7. Benzene Isoconcentration Map (03/30/2023)
8. Ethylbenzene Isoconcentration Map (03/30/2023)
9. Total Xylenes Isoconcentration Map (03/30/2023)
10. MTBE Isoconcentration Map (03/30/2023)
11. Naphthalene Isoconcentration Map (03/30/2023)
12. Groundwater Cross Sections

TABLES:

1. Underground Storage Tanks (Page 1)
2. Surrounding Properties Within 1,000 feet
3. Monitoring Well Construction Details
4. Groundwater Elevation Data
5. Historical Groundwater Analytical Data
6. Current Groundwater Analytical Data

APPENDICES:

A. NOV (12/13/2021)
B. Standard Field Procedures
C. Laboratory Report & Chain of Custody
D. Benzene & MTBE vs Time Graphs
E. Groundwater Contaminant Mass Calculations

Page II

Acronyms

BLS ................. Below Land Surface
BTEX .............. Benzene, Toluene, Ethylbenzene, & Xylenes
CFR ................. Code of Federal Regulations
COC ................ Chain of Custody
CSA ................. Comprehensive Site Assessment
CAP ................. Corrective Action Plan
DEQ ................ Department of Environmental Quality
GCLs ............... Gross Contaminant Levels
HASP .............. Health & Safety Plan
MSCC .............. Maximum Soil Contaminant Concentration
MTBE .............. Methyl Tertiary Butyl Ether
µg/L ................ Micrograms per Liter
mg/kg ............. Milligrams per kilogram
MW ................ Monitoring Well
NPDES ............ National Pollutions Discharge Elimination System
NCAC .............. North Carolina Administrative Code
O&M .............. Operations and Maintenance
OSHA .............. Occupational Safety and Health Administration
OWS .............. Oil Water Separator
OVA ................ Organic Vapor Analyzer
PPM ................ Parts Per Million
PID .................. Photo-ionization Detector
P&ID ............... Process & Instrumentation Diagram
PVC ................. Poly-vinyl Chloride
QA/QC ............ Quality Assurance / Quality Control
SCFM .............. Standard Cubic Feet per Minute
SVE ................. Soil Vapor Extraction
WSW .............. Water Supply Well
UST ................. Underground Storage Tank
US EPA ............ United States Environmental Protection Agency

Page III
Henderson - Kim’s Grocery, Greensboro, NC – Groundwater Monitoring Report 1
Pyramid Project # 2023-093 5/12/2023

GROUNDWAER MONITORING REPORT
Kim’s Grocery
NCDEQ Incident # 12543

1.0 Executive Summary

As requested by Ronnie Henderson, Pyramid Environmental & Engineering, P.C. (Pyramid) has
completed the Groundwater Monitoring Report for the Kim’s Grocery site located at 4104
Randleman Road, Greensboro, NC.

The type of contamination found on the property appears to be the result of a release of
petroleum hydrocarbons, primarily gasoline. The exact amount and date of the release is
unknown. The source appears to be from the underground storage tank (UST) systems, with
the highest concentrations detected near the pump island. During November of 1992, three (3)
gasoline tanks were removed from the site. It is reported that 298.89 tons of contaminated soil
were removed from the tank pit and product line areas during the gasoline UST removal. On
June 8, 1994, a 2000-gallon kerosene UST was excavated and removed from the property.
Currently, an inactive gasoline UST system and an inactive kerosene UST are present on the
site.

In April 2001, Pyramid completed the CAP report for the site. The CAP proposed a remediation
system which included six air-sparging (AS) wells and one horizontal soil vapor extraction (SVE)
well. The air-sparging (AS) and soil vapor extraction (SVE) groundwater treatment system for
the Kim’s Grocery site began operation on August 19, 2002. Based on the low site ranking, the
system was permanently shut down during the November 2004 site visit and the power service
was terminated. A total of 4,020 equivalent gallons of total hydrocarbon vapors were removed
during the remediation period.

In February 2007, Pyramid reviewed and updated the receptor information for Kim’s Grocery
and the surrounding properties. The original survey of the surrounding area was conducted in
March 2000. In 2008, Kim’s Grocery was connected to municipal water and the pump was
removed from the onsite water supply well. The same year, the property at 4100 Randleman
Road and three additional properties (SWF, SWG and SWJ) were connected to municipal water.
The research showed that no other properties connected to municipal water in 2007, although
some of the surrounding properties changed ownership. Municipal fire hydrants are present
along Randleman Road both north and south of Kim’s Grocery.

In February 2022, the results of the sampling event detected benzene in monitoring wells MW-
8B and MW-10 at levels that exceed the NCAC 2L Groundwater Standards. MTBE was detected
in monitoring well 8B at levels that exceed NC 2L Standards, and Naphthalene was detected in
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MW 8B and Apex MW-15 at levels that exceed NC 2L Standards. The total amount of BTEX
compounds increased from 1,363.9 in November 2017 to 1,592 in February 2022.

In March 2023, Pyramid completed the groundwater sampling event for the Kim’s Grocery site.
The results of the sampling event detected benzene in monitoring wells MW-8B and MW-10 at
levels that exceed NCAC 2L Groundwater Standards. MTBE was detected in MW-8B at levels
that exceed NC 2L Standards, and Naphthalene was detected in MW 8B, MW-9, and MW-10 at
levels that exceed NC 2L Standards. As the data above shows, concentrations of all targeted
groundwater contaminants have decreased since the previous sampling event (February 2022).
However, concentrations of benzene, MTBE, and naphthalene remain above the 2L
Groundwater Standard at the site during the March 2023 groundwater monitoring event.

2.0 Site Information

Pyramid has completed the monitoring event and monitoring report for the Kim’s Grocery site,
NCDEQ Incident #12543. The location of the site is shown on Figure 1, an excerpt of the
Pleasant Garden USGS topographic map.

2.1 Site Identification
SITE NAME: Kim’s Grocery
ADDRESS: 4104 Randleman Road
CITY: Greensboro, NC
COUNTY: Guilford
CURRENT PROPERTY OWNER: Milton Henderson/Ronnie Henderson
CURRENT PROPERTY USE: Convenience Store & Gas Station
OWNER / RESPONSIBLE PARTY: Milton Henderson
NC DEQ UST FACILITY ID: 0-026460
GROUNDWATER INCIDENT NO.: 12543
SITE RANKING: High Risk
GPS SOURCE Google Earth
LATITUDE/LONGITUDE: N. Lat. 35.980908 / W. Long. 79.802002

2.2 Contacts Information
UST OWNER/OPERATOR: Mr. Ronnie Henderson
6025 DeHaven Road
Pleasant Garden, NC 27313
[phone]
PROPERTY OWNER: Mr. Ronnie Henderson
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Pyramid Project # 2023-093 5/12/2023

6025 DeHaven Road
Pleasant Garden, NC 27313
[phone]
CONSULTANT/CONTRACTOR: Mike Jones
Pyramid Environmental & Engineering, P.C.
503 Industrial Avenue, Greensboro, NC 27406
[phone]
[e-mail]
ANALYTICAL LABORATORY: Waypoint Analytical, LLC
449 Springbrook Rd
Charlotte, NC 28217
[phone]

Table 1:
UNDERGROUND STORAGE TANKS (USTs)
UST-ID SIZE (gals) CONTENTS STATUS DATE
1 8,000 Gasoline Removed 11/4/92
2 4,000 Gasoline Removed 11/4/92
3 4,000 Gasoline Removed 11/4/92
4 2,000 Kerosene Removed 6/8/94
5 2,000 Kerosene Inactive Temp. Closure
6 10,000 Gasoline Inactive Temp. Closure
7 4,000 Gasoline Inactive Temp. Closure
FIGURES: Figure 1: Topographic Map
Figure 2: Adjoining Properties and Supply Wells
Figure 3: Site Detail Map

2.3 Site Hydrology & Geology
GEOLOGIC PROVINCE: Carolina Slate Belt
BEDROCK TYPE: Metamorphic granitic rock w/small mafic intrusions
DEPTH TO BEDROCK: 8.2 – 20 feet below ground surface (BGS)
DEPTH TO WATER TABLE: Average = 0.37 – 8.73 feet BGS (3/4/2015)
POTENTIOMETRIC GRADIENT: Average gradient = 0.056 feet/foot
HYRDAULIC CONDUCTIVITY (K): CSA Average K = 6 x 10-7 feet/second
GROUNDWATER VELOCITY: 1.65 to 5.37 feet/year

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2.4 Previous Reports

REPORT TITLE CONSULTANT REPORT DATE
Soil Sampling Report Enviro-Tank, Inc. 02/15/93
UST Removal Site Investigation Report Pyramid Environmental 07/05/94
Soil and Groundwater Investigation Pyramid Environmental 11/07/94
Groundwater Monitoring Report Pyramid Environmental 01/15/96
Comprehensive Site Assessment (CSA) Pyramid Environmental 04/19/00
Pre-CAP Monitoring Report Pyramid Environmental 12/04/00
Corrective Action Plan (CAP) Pyramid Environmental 04/23/01
Pre-CAP Monitoring Report Pyramid Environmental 10/31/01
Active Remediation Monitoring Reports Pyramid Environmental 1/17/03 – 11/4/16
Groundwater Monitoring Report Pyramid Environmental 4/17/17
Monitoring Report Pyramid Environmental 11/16/17
Monitoring Report Pyramid Environmental 4/14/22
Monitoring Report Pyramid Environmental Current

2.5 Release Information

a. Date Discovered: November 1992
b. Est. Qty. of Release: Unknown
c. Source of Release: Gasoline UST Systems and Dispensers
d. UST Size/Contents: See Table 1
e. Latitude/Longitude: N. Lat. 35.980908 / W. Long. 79.802002

2.6 Correction Action Plan (CAP)
In April 2001, Pyramid completed the CAP report for the site. The CAP proposed a remediation
system which included six air-sparging (AS) wells and one horizontal soil vapor extraction (SVE)
well. The wells will be connected through conduits in trenches to a system building which will
house the AS and SVE systems.

The air-sparging (AS) and soil vapor extraction (SVE) groundwater treatment system for the
Kim’s Grocery site began operation on August 19, 2002. Based on the low site ranking (<750),
the system was permanently shut down during the November 2004 site visit and the power
service was terminated.

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2.7 Receptors Impacted by Release
No current receptors have been impacted. The last receptor survey was conducted in 2008,
over 15 years ago. It is likely that more local residents have connected to city water in the past
15 years. A new receptor survey update should be completed for the site.

3.0 Assessment Summary

The type of contamination found on the property appears to be the result of a release of
petroleum hydrocarbons, primarily gasoline. The exact amount and date of the release is
unknown. The source appears to be from the underground storage tank (UST) systems, with
highest concentrations detected near the pump island. During November of 1992, three (3)
gasoline tanks were removed from the site. It is reported that 298.89 tons of contaminated soil
were removed from the tank pit and product line areas during the gasoline UST removal. On
June 8, 1994, a 2,000-gallon kerosene UST was excavated and removed from the property.
There are currently gasoline UST systems and a kerosene UST present on the site that are in
temporary closure. A release of petroleum product has also been reported from another
property (Handy Kwik) that is located approximately 250 feet to the southeast (up gradient) of
the subject site.

The primary contaminants detected on the site are the petroleum compounds, benzene,
toluene, ethylbenzene, and xylenes (BTEX). The maximum BTEX concentration in the site soil
was 35,960 ppm (mg/kg). The Maximum BTEX concentration in the groundwater was 73,800
micrograms per liter (µg/l). The primary source area appears to be the gasoline pump island.
The groundwater plume as defined by total BTEX covers approximately 6,100 ft2. The highest
historical benzene concentration in the groundwater was 17,000 ppb, which was above the GCL
(Gross Contamination Level). The BTEX compounds and most other petroleum contaminants
were below detectable limits in the vertical extent well, VE-1, which was screened starting at
approximately 30 feet below the water table, or 40 feet below the ground surface.

3.1 Summary of Analytical Data for Soil from CSA
Number of Soil Samples (pre-CSA): 8 (TPH by 5030/3550)

Number of Soil Samples for CSA: 15

Soil Analytical Methods for CSA: EPA Methods 8260 & 8270
MADEP EPH & VPH

Primary Soil Contaminants & Maximum Concentrations:

Benzene: 760 ppm (mg/kg)
Toluene: 1,100 ppm
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Ethylbenzene: 4,200 ppm
Xylenes: 20,000 ppm
Total BTEX (sum of the above): 35,960 ppm
MTBE (methyl-tert-butyl-ether): 370 ppm
Naphthalene: 1,000 ppm
n-Propyl benzene: 1,600 ppm
1,2,4 Trimethylbenzene: 5,900 ppm
1,3,5 Trimethylbenzene: 2,300 ppm
C5-C8 Aliphatics: 1,800 ppm
C9-C10 Aromatics: 1,100 ppm

3.2 Extent of Soil Contamination from CSA
Approximate Area of Impacted Soil (CSA): 1800-2000 ft2

Approximate Volume of Impacted Soil (CSA): 550-650 yd3

Figure 4: Soil Cross Section Location Map
Figure 5: Soil Cross Section A-A’ & B-B’

3.3 Summary of Analytical Data for Groundwater from CSA
Number of Type II Monitoring Wells: 12
(including MW-1 & MW-3 which have been closed or destroyed)

Number of Type III Vertical Extent Wells: 1 (double cased deep well)

Free Product: No free product has been observed.

Primary Groundwater Contaminants & Maximum Concentrations:

Benzene: 17,000 ppb (µg/l)
Toluene: 43,000 ppb
Ethylbenzene: 2,800 ppb
Xylenes: 11,000 ppb
Total BTEX (sum of the above): 73,800 ppb
MTBE (methyl-tert-butyl-ether): 4,000 ppb
IPE (isopropyl ether): 600 ppb
Naphthalene: 840 ppb
Chloroform: 2,100 ppb
C5-C8 Aliphatics: 74,000 ppb
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C9-C12 Aliphatics: 17,000 ppb

Approximate Area of Groundwater Plume: 6,100 ft2
Approximate Depth of Groundwater Plume: < 40 ft bgs

The groundwater cross sections with the current groundwater data is included in Figure 12.

3.4 Hydraulic Conductivity Data from the CSA
GEOLOGIC PROVINCE: Carolina Slate Belt
BEDROCK TYPE: Metamorphic granitic rock w/small mafic intrusions
DEPTH TO BEDROCK: 8.2 – 20 feet below ground surface (BGS)
DEPTH TO WATER TABLE: Average = 0.37 – 8.73 feet BGS (3/4/2015)
POTENTIOMETRIC GRADIENT: Average gradient = 0.056 feet/foot / 3° West
HYRDAULIC CONDUCTIVITY (K): CSA Average K = 6 x 10-7 feet/second
GROUNDWATER VELOCITY: 1.65 to 5.37 feet/year

4.0 Receptor Information

In February 2007, Pyramid reviewed and updated the receptor information for Kim’s Grocery
and the surrounding properties. The original survey of the surrounding area was conducted in
March 2000. In 2008, Kim’s Grocery was connected to municipal water and the pump was
removed from the onsite water supply well. The same year, the property at 4100 Randleman
Road and three additional properties (SWF, SWG and SWJ) were connected to municipal water.
The research showed that no other properties connected to municipal water in 2007, although
some of the surrounding properties changed ownership. Municipal fire hydrants are present
along Randleman Road both north and south of Kim’s Grocery. A summary of the surrounding
properties and water supply well information is presented as Table 2.

ADJOINING PROPERTY USE: Residential / Commercial
PUBLIC WATER AVAILABILITY: Yes, but most residences were not connected to
municipal water in 2007.
SUPPLY WELLS WITHIN 1000 FEET: Yes (see Figure 2)
SUPPLY WELLS IMPACTED: Yes – The inactive supply well onsite. (This well was
disconnected, and the pump was removed.)
NEAREST SURFACE WATER: Small tributary of Polecat Creek located on site
approximately 50’ from source.
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BASEMENTS: Partial basement located on site.
SUBSURFACE STRUCTURES: Partial basement in Kim’s Grocery building,
pipelines for active UST system & subsurface
telephone lines in DOT Right-of-Way. These are not
expected to act as conduits to spread
contamination.

Since the last receptor update was performed fifteen years ago (2007) it is likely that the water
well and municipal water use has changed. Pyramid recommends completing a receptor survey
update.

The underground storage tank (UST) systems have petroleum piping present in the dispenser
area, and the tanks are located to the south of the dispenser islands. The UST Owner/operator
wants to remove the USTs and excavate any contaminated soil that is present surrounding the
UST systems.

The soil sampling previously completed in the dispenser island showed that soils remain in this
area above the Risk Based soil standards. These soils are acting as a continuing source of
petroleum contamination to groundwater. The removal of contaminated soil in the dispenser
area would provide direct benefits to lower groundwater concentrations. The lowering of
groundwater concentrations would speed the regulatory closure of the current groundwater
incident for this high risk site.

Public Water Supplies
The subject site and some of the adjacent and adjoining properties are connected to the City of
Greensboro municipal water supply. An updated receptor survey is recommended by Pyramid
to reevaluate site risk since the last receptor survey was in 2007, and a receptor survey update
is needed.

Surface Water
The surface water from the subject property flows to the west, northwest into an unnamed
creek on the northern edge of the property boundary (see Figures 1 & 3).

Wellhead Protection Areas
There are no designed wellhead protection areas within a 1,500-foot radius of the site.

Land Use
The Kim’s Grocery facility is currently inactive, and the current UST system is in temporary
closure. The site is located in an area of combined residential, agricultural, and commercial
property use. Municipal water is available to most properties in the area.

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5.0 CAP Summary
5.1 CAP
In April 2001, Pyramid completed the CAP report for the site. The CAP proposed a remediation
system which included six air-sparging (AS) wells and one horizontal soil vapor extraction (SVE)
well. The remediation system wells were connected through conduits in trenches to a system
building which will house the AS and SVE systems.

5.2 CAP Implementation
The air-sparging (AS) and soil vapor extraction (SVE) groundwater treatment system for the
Kim’s Grocery site began operation on August 19, 2002. Based on the site ranking, the system
was permanently shut down during the November 2004 site visit and the power service was
terminated. A total of 4,020 equivalent gallons of total hydrocarbon vapors were removed
during the remediation period. The hydrocarbon mass removal by soil vapor extraction (SVE) is
calculated in Appendix B.

5.3 On-Site Discharges
There were no-site discharges of treated groundwater or other remediation processes.

5.4 Explanation of Cleanup Goals
The site is a high risk site requiring groundwater cleanup to below NCAC 2L Groundwater
Standards. Some properties have access to municipal water; however many residents within
1,000 feet of the site still rely on private groundwater supply wells.

An updated receptor survey is recommended for the Kim’s Grocery site.

6.0 Groundwater Sampling

6.1 Monitoring Well Sampling
SAMPLING DATE: March 30, 2023
WELLS SAMPLED: MW-6, MW-8B, MW-9, MW-10, and MW-18
LAB ANALYSES: Standard Method 6200B

FREE PRODUCT: No free product has been observed on this site.

TABLES & FIGURES: Table 1: Underground Storage Tanks (Page 1)
Table 2: Surrounding Properties within 1,000 feet
Table 3: Monitoring Well Construction Details
Table 4: Groundwater Elevation Data (3/30/2023)
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Table 5: Current & Historical GW Analytical Data

Figure 6: Potentiometric Surface Map (3/30/2023)
Figure 7: Benzene Isoconcentration Map (3/30/2023)
Figure 8: Ethylbenzene Isoconcentration Map (3/30/2023)
Figure 9: Total Xylenes Isoconcentration Map (3/30/2023)
Figure 10: MTBE Isoconcentration Map (3/30/2023)
Figure 11: Naphthalene Isoconcentration Map (3/30/2023)
Figure 12: Groundwater Cross Sections

LABORATORY REPORTS & CHAINS-OF-CUSTODY: Appendix C

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6.2 Potable Water Supply Well Sampling
SAMPLING DATE: The last date when water supply well SW-1 was sampled was
October 3, 2010.
NOTES: In 2007, the site water supply well that served the residence and
the store was disconnected from power and the pump was
removed. No other area water supply wells are threatened, and
no other water supply wells have been sampled in the past 15
years.

6.3 Description of Current Groundwater Contamination
Groundwater analytical results are reported in micrograms per liter (µg/L)

CURRENT MAXIMUM Benzene: 569 µg/L (MW-8B: 3/30/2023)
PREVIOUS MAXIMUM Benzene: 1,300 µg/L (MW-8B: 2/09/2022)
HISTORICAL MAXIMUM Benzene: 19,000 µg/L (MW-8B: 9/28/2000)

CURRENT MAXIMUM Ethylbenzene: 124 µg/L (MW-8B: 3/30/2023)
PREVIOUS MAXIMUM Ethylbenzene: 226 µg/L (MW-8B: 2/09/2022)
HISTORICAL MAXIMUM Ethylbenzene: 840 µg/L (MW-8B: 11/22/1999)

CURRENT MAXIMUM Xylenes: 107 µg/L (MW-8B: 3/30/2023)
PREVIOUS MAXIMUM Xylenes: 125 µg/L (APEX MW-14: 2/09/2022)
HISTORICAL MAXIMUM Xylenes: 840 µg/L (MW-8B: 11/22/1999)

CURRENT MAXIMUM BTEX: 805 µg/L (MW-8B: 3/30/2023)
PREVIOUS MAXIMUM BTEX: 1,592 µg/L (MW-8B: 2/09/2022)
HISTORICAL MAXIMUM BTEX: 110,600 µg/L (MW-8B: 12/12/2002)

CURRENT MAXIMUM MTBE: 302 µg/L (MW-8B: 3/30/2023)
PREVIOUS MAXIMUM MTBE: 409 µg/L (MW-8B: 2/09/2022)
HISTORICAL MAXIMUM MTBE: 7,900 µg/L (APEX MW-14: 9/28/2000)

CURRENT MAXIMUM Naphthalene: 145 µg/L (MW-8B: 3/30/2023)
PREVIOUS MAXIMUM Naphthalene: 192 µg/L (MW-8B: 2/09/2022)
HISTORICAL MAXIMUM Naphthalene: 840 µg/L (MW-8B: 11/22/1999)

As the data above shows, concentrations of all targeted groundwater contaminants have
decreased since the previous sampling event (February 2022). However, concentrations of
benzene, MTBE, and naphthalene remain above the 2L Groundwater Standard at the site during
the March 2023 groundwater monitoring event. A copy of the March 2023 laboratory report is
included in Appendix C.

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Graphs showing Benzene and MTBE concentrations versus time graph for monitoring wells
MW-6, 8B, 9, and 10 are included in Appendix D.

6.4 Removal of ORC Socks
A total of twenty-six socks filled with calcium oxy-hydroxide based ORC-Advanced® compound
were deployed in five monitoring wells (MW-6, MW-8B, MW-9, MW-10, and APEX MW-14) on
August 24, 2016. Contaminant concentrations above the 2L Groundwater Standard were
confirmed in these five monitoring wells during the July 2016 groundwater monitoring event.

The ORC socks were removed from wells and field measurements were recorded prior to
collection of groundwater samples on March 1, 2017. The socks were put in a plastic bag and
were disposed in a conventional dumpster as suggested by the NCDEQ.

6.5 Vertical Extent of Groundwater Contamination
The vertical extent of the groundwater contamination is shown on the groundwater cross-
sections included in Figure 12.

7.0 MNA & Source Depletion

The site is currently in the Monitoring Natural Attenuation (MNA) phase of the remediation
plan.

7.1 Soil Contaminant Mass Removal
The air-sparging (AS) and soil vapor extraction (SVE) groundwater treatment system for the
Kim’s Grocery site began operation on August 19, 2002. Based on the NCDEQ site ranking, the
system was permanently shut down during the November 2004 site visit and the power service
was terminated. A total of 4,020 equivalent gallons of total hydrocarbon vapors have been
removed since the remediation system was started. The hydrocarbon mass removal by air
sparging and soil vapor extraction (SVE) is calculated in Appendix E.

No soil contaminant mass baseline nor projected remedial milestones
were established for the Kim’s Grocery CAP which was completed in 2001.

7.2 Groundwater – Total Mass of Contaminant
Some of the groundwater contaminant mass was removed by operation of the air sparge and
SVE remediation system from August 2002 to November 2004.

No groundwater mass baseline nor projected remedial milestones were
established for the Kim’s Grocery CAP which was completed in 2001.
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The groundwater mass of contaminant calculations are presented in Appendix E. Pyramid
calculated a total mass of contaminant for groundwater, and calculated a comparison of the
total mass of contaminant remaining at the end of March 2023. The calculated total
groundwater mass before remediation began in 1999 was approximately 7.11E+09 micrograms
(see Appendix E).

The calculated groundwater mass remaining (2.35E+08 micrograms) was calculated based on
the March 2023 groundwater concentrations and plume size. These calculations provided an
estimated groundwater remediation of approximately 10% reduction of groundwater mass
after the operation of the remediation system for approximately 2.25 years.

Using the total mass of contaminant to measure remediation progress has significant problems.
If the analysis does not include the type of aquifer material the contaminants are contained in,
and the release rate and release mechanisms, and “smear-zone contaminant mass”, then
measurements of mass removal may be inaccurate or misleading. The US EPA has prepared
written documents concerning this subject if additional information is required, please contact
Pyramid.

Benzene and MTBE concentrations versus time graphs for monitoring wells MW-6, 8B, 9, and
10 are included in Appendix D.

8.0 Conclusions

In March 2023, the depth to the water table ranged from 2.45 feet to 7.08 feet. As shown on
Figures 6, the groundwater on the site flows northwest towards the small creek located along
the northern border of the site.

The results of the March 2023 sampling event detected benzene in monitoring wells MW-6,
MW-8B, and MW-10. In MW-6, the concentration increased from non-detect in February 2022
to 0.404 µg/L in March 2023, though it remains below the 2L Groundwater Standard. In MW-
8B, the concentration decreased from 1,300 µg/L in February 2022 to 569 µg/L in March 2023,
representing a 43% decrease since February 2022, yet it is still above the 2L Groundwater
Standard. Finally, in MW-10, benzene concentration increased from 1.7 µg/L in February 2022
to 2.69 µg/L in March 2023, which is also above the 2L Groundwater Standards.

In March 2023, MTBE was detected in monitoring wells MW-6, MW-8B, and MW-10. Only in
MW-8B (302 µg/L) was MTBE found to be above the 2L Standard. This is a decrease in MW-8B
concentration from 409 µg/L in February 2022.
Henderson - Kim’s Grocery, Greensboro, NC – Groundwater Monitoring Report 14
Pyramid Project # 2023-093 5/12/2023

Naphthalene concentrations were detected in MW-6, MW-8B, MW-9, and MW-10. In MW-8B,
the concentration has decreased from 192 µg/L in February 2022 to 145 µg/L in March 2023.
However, in MW-6, MW-9, and MW-10, concentrations have increased since February 2022. In
MW-6, the concentration went from non-detect to 0.778 µg/L in March 2023, which is below
the 2L Groundwater Standard. In MW-9, the concentration rose from non-detect to 55.6 µg/L in
March 2023, which is above the 2L Groundwater Standard. Lastly, in MW-10, the concentration
increased from 3.6 µg/L (below 2L Groundwater Standards) in February 2022 to 7.66 µg/L in
March 2023, surpassing the 2L Groundwater Standard.

The pre-approval request for the next groundwater monitoring event and receptor survey
update will be submitted to NCDEQ under a separate cover.

9.0 Recommendations

The Kim’s Grocery site is a high-risk site (H248), and continued cleanup and monitoring is
required. Pyramid recommends the following:

 Since the last receptor update was performed fifteen years ago (2007) it is likely that the
water well and municipal water use has changed. Pyramid recommends completing a
receptor survey update in 2023.

 During the receptor survey update, Pyramid recommends discussing the future offer for
the NC DEQ to pay to connect homes and businesses up to municipal water. This will
help lower the risk and may close the regulatory incident without source area cleanup.

 Pyramid has repeatedly recommended soil excavation to the NC DEQ as a way of
addressing the remaining petroleum hydrocarbon mass adsorbed in the soil at the
dispenser island and surrounding area.

 Continued annual groundwater monitoring. Each annual groundwater monitoring event
should include all monitoring wells and the next event should be conducted in
December 2023 with the report prepared in January 2024..

Henderson - Kim’s Grocery, Greensboro, NC – Groundwater Monitoring Report 16
Pyramid Project # 2023-093 5/12/2023

This report is prepared for and made available solely for the use of Ronnie Henderson and the
NCDEQ. The contents thereof may not be used or relied upon by any other person without the
express written consent and authorization of Pyramid Environmental & Engineering, PC. The
scope of services for this environmental report relies on documented environmental data
provided by others. The NCDEQ accepted the previous environmental investigations; therefore,
these reports are counted as reliable in providing historical data for the evaluations in this
report. The subsurface is inherently heterogeneous and subsurface heterogeneities not
identified in this limited study may influence contaminants in unpredicted ways. Subsurface
conditions such as groundwater flow, groundwater elevations, and water quality will vary over
time. The opinions and conclusions presented in this report are in accordance with industry
accepted geologic and hydrogeologic practices used at the time and location where the report
was prepared. No guarantee or warrantee is expressed or intended. The observations,
conclusions, and recommendations documented in this report are based on site conditions and
information reviewed at the time of Pyramid's investigation. Pyramid Environmental
appreciates the opportunity to provide this environmental service.

FIGURES

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ENVIRONMENTAL & ENGINEERING, P.C.
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TABLES

Property No. Parcel # Property OwnerProperty Owner Address Greensboro, NC 27406 (unless otherwisenoted)Physical Address Greensboro, NC 27406Water supply well?Well IDDistance from Source areaActive Municipal Water Account? (Yes/No) Comments112-09-0633-0-0622-00-009 Milton Henderson5703 S. US 50, Wallace, NC 28467 4104 Randleman Road yes A onsite yes212-09-0633-0-0622-00-051Industrial Truck Sales and Service, Inc. P.O. Box 3174, Greensboro, NC 27402 4102 Randleman Road yes B no312-09-0633-0-0622-00-038Industrial Truck Sales and Service, Inc. P.O. Box 3174, Greensboro, NC 27402 4100 Randleman Road yes C yes412-09-0633-0-0622-00-018Pauline E. Peele L/T same 4105 Randleman Road yes D no512-09-0633-0-0621-00-013Helen C. Steele, J.C. Patton, J.L. Coble, Jr.4102 West Friendly Avenue, Greensboro, NC 274104110 Randleman Roadyes E no612-09-0633-B-0621-00-001Elbert & Joan Street 4946 Randleman Road 4109 Randleman Road yes F yes712-09-0633-B-0621-00-002Elbert & Joan Street 4946 Randleman Road 105 Spur Road yes G yes812-09-0633-B-0621-00-003David C. Saunders7112 Company Mill Road, Climax, NC 27233 107 Spur Road yes H no912-09-0633-B-0621-00-004David C. Saunders7112 Company Mill Road, Climax, NC 27233 111 Spur Road no no vacant land1012-09-0633-0-0621-00-016Joanne Herring, Vicki Hinton, Kethy Greenson & Pat Neese 3021 NC 62 East, Liberty, NC 27298 201 Spur Road no no vacant land1112-09-0633-0-0622-00-005Jeff Morgan 4421 South Elm-Eugene Street 203 Spur Road yes I no1212-09-0633-0-0621-00-017Joan Warren same 205 Spur Road yes J yes1312-09-0633-0-0622-00-008Doris Davis Doggett1505 Neelley Road, Pleasant Garden, NC 27313 4054 Randleman Road yes L no1412-09-0633-0-0622-00-007Doris Davis Doggett1505 Neelley Road, Pleasant Garden, NC 27313 4044 Randleman Road no no wooded lot1512-09-0633-0-0622-00-044Richard A. & Hazel Davis 5907 Drake Road 4046 Randleman Road yes M no1612-09-0633-0-0622-00-040Kim Ki Suk 975 Halsbrook Road 4051 Randleman Road yes N no1712-09-0633-0-0622-00-052Jeff Morgan same4421 South Elm-Eugene Street yes O noTable 2Surrounding Properties within 1000 feetKim's Grocery Incident 125434104 Randleman Road Greensboro, NCPage 1 of 2
Property No. Parcel # Property OwnerProperty Owner Address Greensboro, NC 27406 (unless otherwisenoted)Physical Address Greensboro, NC 27406Water supply well?Well IDDistance from Source areaActive Municipal Water Account? (Yes/No) CommentsTable 2Surrounding Properties within 1000 feetKim's Grocery Incident 125434104 Randleman Road Greensboro, NC1812-09-0633-0-0622-00-045Jeff Morgan 4421 South Elm-Eugene Street4415-4419 South Elm-Eugene St no no field1912-09-0633-0-0622-00-028Jeff Morgan 4421 South Elm-Eugene StreetgSt no2012-09-0633-0-0621-00-026James & Helen Steele same 4204 Randleman Road yes P no2112-09-0633-0-0621-00-027Gail Sheffield P.O. Box 36467, Greensboro, NC 27416 4210 Randleman Road yes Q no2212-09-0633-B-0621-00-014Ronald GreeneP.O. Box 94, Pleasant Garden, NC 27313 104 Spur Road yes R no2312-09-0633-B-0621-00-013Sylvia R. Christopher5003 Bullards Loop, Greensboro, NC 27405 106 Spur Road yes S no2412-09-0633-B-0621-00-012Rodney Stewart same 110 Spur Road yes T no2512-09-0633-0-0621-00-015Harry & Shirley Bell same 200 Spur Road yes U no2612-09-0633-0-0621-00-053Kay L. Oliver same 206 Spur Road yes V no2712-09-0633-B-0621-00-006Myrtle Leonard same 5205 Shadd Lane yes W no2812-09-0633-B-0621-00-007 Patti Knightsame 5207 Shadd Lane yes X no2912-09-0633-B-0621-00-015Ermah Cahoon213 West Avondale Dr. Greensboro, NC 27403 4201 Randleman Road yes Y nohouse appears abandoned3012-09-0633-B-0621-00-016Jo Ann Flynn, Annette Gamble Fine & Glenn H. Flynn L/T same 4209 Randleman Road yes Z no3112-09-0633-B-0621-00-029Gregory & Michael Gamble 5215 Shadd Lane Road yes 1 no3212-09-0633-B-0621-00-017Elizabeth Gamble 5215 Shadd Lane 4211 Randleman Road yes 2 no3312-09-0633-B-0621-00-020White Rock Church of Nazarene Rt 1 Box 133 4221 Randleman Road yes 3 no3412-09-0633-B-0621-00-009Gregory & Michael Gamble 5215 Shadd Lane 5208 Shadd Lane yes 4 no3512-09-0633-B-0621-00-028Gregory & Michael Gamble 5215 Shadd Lane Road no no parcel is 0.02 acres3612-09-0633-B-0621-00-010 Barna Saunderssame 5206 Shadd Lane yes 5 no3712-09-0633-B-0621-00-011Jo Ann Flynn 4209 Randleman Road 5204 Shadd Lane yes 6 noPage 2 of 2
Table 3 Monitoring Well Construction Details KIM’S GROCERY INCIDENT 12543 MONITORING WELL DATE INSTALLED WELL DEPTH STATUS OUTER CASING RISER INTERVAL SCREEN INTERVAL GROUT INTERVAL BENTONITE INTERVAL SAND INTERVAL MW-1 10/19/94 10’ CLOSED NA 0-5’ 5-10’ 0-0.75’ 0.75-1.5’ 8.5-10’ MW-2 04/25/96 8.6’ NA 0-0’ 0-8.6’ 0-1’ 1-1.6’ 1.6-8.6’ MW-3 04/25/96 8.17’ CLOSED NA 0-0’ 0-8.17’ 0-0.5’ 0.5-1’ 1-8.17’ MW-4 4/25/96 13.6’ NA 0-3.6’ 3.6-13.6’ 0-1’ 1-2’ 2-13.6’ MW-5 08/15/96 15.1’ NA 0-5.1’ 5.1-15.1’ 0-3’ 3-4’ 4-15.1’ MW-6 08/15/96 12’ NA 0-2’ 2-12’ 0-0.5’ 0.5-1’ 1-12’ MW-7 08/15/96 8.25’ NA 0-3.25’ 3.25-8.25’ 0-1’ 1-2’ 2-8.25’ MW-8B 11/16/99 11.5’ NA 0-5.5’ 5.5-10.5’ 0-1.5’ 1.5-3.5’ 3.5-11.5’ MW-9 11/16/99 16’ NA 0-4.75’ 4.75-14.75’ 0-2’ 2-4’ 4-16’ MW-10 11/16/99 12.75’ NA 0-4.75’ 4.75-9.75’ 0-2’ 2-4’ 4-12.75’ MW-11 02/10/00 9’ NA 0-2’ 2-9’ 0-0.5’ 0.5-1.5’ 1.5-9’ MW-12 02/10/00 17’ PAVED OVER NA 0-2’ 2-16’ 0-0.5’ 0.5-1’ 1-17’ VE-1 02/10/00 45.20’ 0-24’ 0-40’ 40-45’ 0-34’ 34-39’ 39-45.2’ MW-14* 11/30/95 25’ NA 0-10’ 10-25’ 0-6’ 6-8’ 8-25’ MW-15* 11/30/95 23’ NA 0-8’ 8-23’ 0-7’ 7-9’ 9-23’ MW-16 11/09/00 19.5’ NA 0-2’ 2-19.5’ 0-1’ 1-2’ 2-19.5’ MW-17 11/09/00 20’ NA 0-3’ 3-20’ 0-1’ 1-2’ 2-20’ MW-18 11/10/00 10’ PAVED OVER NA 0-2’ 2-10’ 0-1’ 1-2’ 2-10’ ALL MONITORING WELLS HAVE 2” PVC CASING/RISER AND 2” PVC SCREEN WITH 0.01” SLOTS. OUTER CASING FOR TYPE III WELL IS 6” PVC. NA = NOT APPLICABLE. *OMEGA WELLS – DATA OMEGA ENVIRONMENTAL’S CSA DATED 1/9/96.
TOC Depth Depth Free Free Corrected Corrected
Well Date Elevation To To Product Product Depth To Water
Number Gauged Groundwater Product Thickness Adjustment Water Elevation
(feet) (feet) (feet) (feet) (feet) (feet) (feet)
09-28-00 86.40 1.28 0.00 0.00 0.0000 1.28 85.12
MW-2 10-3-01 86.40 2.39 0.00 0.00 0.0000 2.39 84.01
12-12-02 86.40 0.30 0.00 0.00 0.0000 0.30 86.10
04-29-03 86.40 0.77 0.00 0.00 0.0000 0.77 85.63
09-4-03 86.40 1.52 0.00 0.00 0.0000 1.52 84.88
11-17-03 86.40 1.52 0.00 0.00 0.0000 1.52 84.88
03-2-04 86.40 0.15 0.00 0.00 0.0000 0.15 86.25
05-25-04 86.40 0.74 0.00 0.00 0.0000 0.74 85.66
08-13-04 86.40 1.13 0.00 0.00 0.0000 1.13 85.27
11-17-04 86.40 0.65 0.00 0.00 0.0000 0.65 85.75
02-28-07 86.40 0.85 0.00 0.00 0.0000 0.85 85.55
08-23-07 86.40 2.12 0.00 0.00 0.0000 2.12 84.28
02-19-08 86.40 1.43 0.00 0.00 0.0000 1.43 84.97
12-9-08 86.40 1.69 0.00 0.00 0.0000 1.69 84.71
06-8-09 86.40 1.93 0.00 0.00 0.0000 1.93 84.47
07-7-10 86.40 1.42 0.00 0.00 0.0000 1.42 84.98
01-5-11 86.40 1.28 0.00 0.00 0.0000 1.28 85.12
07-7-11 86.40 1.23 0.00 0.00 0.0000 1.23 85.17
01-10-12 86.40 1.31 0.00 0.00 0.0000 1.31 85.09
07-25-12 86.40 0.96 0.00 0.00 0.0000 0.96 85.44
01-23-13 86.40 2.45 0.00 0.00 0.0000 2.45 83.95
08-1-13 86.40 1.20 0.00 0.00 0.0000 1.20 85.20
02-5-14 86.40 NG
03-4-15 86.40 0.37 0.00 0.00 0.0000 0.37 86.03
07-18-16 86.40 NG
03-1-17 86.40 NG
11-16-17 86.40 1.35 0.00 0.00 0.0000 1.35 85.05
02-8-22 86.40 0.30 0.00 0.00 0.0000 0.30 86.10
03-30-23 86.40 NG
09-28-00 95.06 9.00 0.00 0.00 0.0000 9.00 86.06
MW-4 10-3-01 95.06 9.65 0.00 0.00 0.0000 9.65 85.41
12-12-02 95.06 8.44 0.00 0.00 0.0000 8.44 86.62
04-29-03 95.06 0.92 0.00 0.00 0.0000 0.92 94.15
09-4-03 95.06 7.99 0.00 0.00 0.0000 7.99 87.07
11-17-03 95.06 8.52 0.00 0.00 0.0000 8.52 86.54
03-2-04 95.06 8.43 0.00 0.00 0.0000 8.43 86.63
05-25-04 95.06 9.12 0.00 0.00 0.0000 9.12 85.94
08-13-04 95.06 8.42 0.00 0.00 0.0000 8.42 86.64
11-17-04 95.06 9.02 0.00 0.00 0.0000 9.02 86.04
02-28-07 95.06 8.61 0.00 0.00 0.0000 8.61 86.45
02-19-08 95.06 9.08 0.00 0.00 0.0000 9.08 85.98
12-9-08 95.06 9.19 0.00 0.00 0.0000 9.19 85.87
06-8-09 95.06 8.72 0.00 0.00 0.0000 8.72 86.34
08-1-13 95.06 8.77 0.00 0.00 0.0000 8.77 86.29
02-5-14 95.06 8.65 0.00 0.00 0.0000 8.65 86.41
07-18-16 95.06 NG
03-1-17 95.06 NG
11-16-17 95.06 9.11 0.00 0.00 0.0000 9.11 85.95
02-8-22 95.06 8.00 0.00 0.00 0.0000 8.00 87.06
03-30-23 95.06 NG
09-28-00 95.13 8.01 0.00 0.00 0.0000 8.01 87.12
MW-5 10-3-01 95.13 8.73 0.00 0.00 0.0000 8.73 86.40
12-12-02 95.13 7.42 0.00 0.00 0.0000 7.42 87.71
04-29-03 95.13 7.65 0.00 0.00 0.0000 7.65 87.48
09-4-03 95.13 6.51 0.00 0.00 0.0000 6.51 88.62
11-17-03 95.13 6.55 0.00 0.00 0.0000 6.55 88.58
03-2-04 95.13 6.19 0.00 0.00 0.0000 6.19 88.94
05-25-04 95.13 7.78 0.00 0.00 0.0000 7.78 87.35
08-13-04 95.13 7.00 0.00 0.00 0.0000 7.00 88.13
11-17-04 95.13 6.92 0.00 0.00 0.0000 6.92 88.21
08-23-07 95.13 8.27 0.00 0.00 0.0000 8.27 86.86
02-19-08 95.13 8.12 0.00 0.00 0.0000 8.12 87.01
06-8-09 95.13 7.72 0.00 0.00 0.0000 7.72 87.41
01-23-13 95.13 8.31 0.00 0.00 0.0000 8.31 86.82
08-1-13 95.13 NG NG NG NG NG 95.13
02-5-14 95.13 NG NG NG NG NG 95.13
07-18-16 95.13 NG NG NG NG NG 95.13
03-1-17 95.13 NG NG NG NG NG 95.13
11-16-17 95.13 NG NG NG NG NG 95.13
02-8-22 95.13 7.55 0.00 0.00 0.0000 7.55 87.58
03-30-23 95.13 NG
Table 4
Groundwater Elevation Data
Kim's Grocery Incident 12543
Page 1 of 4
TOC Depth Depth Free Free Corrected Corrected
Well Date Elevation To To Product Product Depth To Water
Number Gauged Groundwater Product Thickness Adjustment Water Elevation
(feet) (feet) (feet) (feet) (feet) (feet) (feet)
Table 4
Groundwater Elevation Data
Kim's Grocery Incident 12543
09-28-00 88.58 3.69 0.00 0.00 0.0000 3.69 84.89
MW-6 10-3-01 88.58 5.06 0.00 0.00 0.0000 5.06 83.52
12-12-02 88.58 3.50 0.00 0.00 0.0000 3.50 85.08
04-29-03 88.58 2.84 0.00 0.00 0.0000 2.84 85.74
09-4-03 88.58 1.83 0.00 0.00 0.0000 1.83 86.75
11-17-03 88.58 3.35 0.00 0.00 0.0000 3.35 85.23
03-2-04 88.58 1.60 0.00 0.00 0.0000 1.60 86.98
05-25-04 88.58 2.51 0.00 0.00 0.0000 2.51 86.07
08-13-04 88.58 2.67 0.00 0.00 0.0000 2.67 85.91
11-17-04 88.58 2.22 0.00 0.00 0.0000 2.22 86.36
02-28-07 88.58 2.51 0.00 0.00 0.0000 2.51 86.07
02-19-08 88.58 3.37 0.00 0.00 0.0000 3.37 85.21
08-5-08 88.58 4.48 0.00 0.00 0.0000 4.48 84.10
12-9-08 88.58 4.01 0.00 0.00 0.0000 4.01 84.57
06-8-09 88.58 3.15 0.00 0.00 0.0000 3.15 85.43
01-20-10 88.58 3.00 0.00 0.00 0.0000 3.00 85.58
07-7-10 88.58 3.26 0.00 0.00 0.0000 3.26 85.32
01-5-11 88.58 3.59 0.00 0.00 0.0000 3.59 84.99
07-7-11 88.58 3.52 0.00 0.00 0.0000 3.52 85.06
01-10-12 88.58 3.46 0.00 0.00 0.0000 3.46 85.12
07-25-12 88.58 3.47 0.00 0.00 0.0000 3.47 85.11
01-23-13 88.58 3.63 0.00 0.00 0.0000 3.63 84.95
08-1-13 88.58 2.60 0.00 0.00 0.0000 2.60 85.98
02-5-14 88.58 2.77 0.00 0.00 0.0000 2.77 85.81
03-4-15 88.58 2.74 0.00 0.00 0.0000 2.74 85.84
07-18-16 88.58 3.11 0.00 0.00 0.0000 3.11 85.47
03-1-17 88.58 4.40 0.00 0.00 0.0000 4.40 84.18
11-16-17 88.58 3.49 0.00 0.00 0.0000 3.49 85.09
02-8-22 88.58 2.28 0.00 0.00 0.0000 2.28 86.30
03-30-23 88.58 2.45 0.00 0.00 0.0000 2.45 86.13
09-28-00 85.83 1.45 0.00 0.00 0.0000 1.45 84.38
MW-7 10-3-01 85.83 2.56 0.00 0.00 0.0000 2.56 83.27
12-12-02 85.83 NG 0.00 0.00 0.0000 0.00 NG
04-29-03 85.83 1.00 0.00 0.00 0.0000 1.00 84.83
02-28-07 85.83 1.12 0.00 0.00 0.0000 1.12 84.71
02-19-08 85.83 1.24 0.00 0.00 0.0000 1.24 84.59
06-8-09 85.83 1.66 0.00 0.00 0.0000 1.66 84.17
08-1-13 85.83 2.57 0.00 0.00 0.0000 2.57 83.26
02-5-14 85.83 NG
03-4-15 85.83 1.03 0.00 0.00 0.0000 1.03 84.80
07-18-16 85.83 NG
03-1-17 85.83 NG
11-16-17 85.83 NG
02-8-22 85.83 0.80 0.00 0.00 0.0000 0.80 85.03
03-30-23 85.83 NG
Page 2 of 4
TOC Depth Depth Free Free Corrected Corrected
Well Date Elevation To To Product Product Depth To Water
Number Gauged Groundwater Product Thickness Adjustment Water Elevation
(feet) (feet) (feet) (feet) (feet) (feet) (feet)
Table 4
Groundwater Elevation Data
Kim's Grocery Incident 12543
09-28-00 95.50 6.75 0.00 0.00 0.0000 6.75 88.75
MW-8B 10-3-01 95.50 9.08 0.00 0.00 0.0000 9.08 86.42
12-12-02 95.50 5.87 0.00 0.00 0.0000 5.87 89.63
04-29-03 95.50 5.48 0.00 0.00 0.0000 5.48 90.02
09-4-03 95.50 5.57 0.00 0.00 0.0000 5.57 89.93
11-17-03 95.50 6.26 0.00 0.00 0.0000 6.26 89.24
03-2-04 95.50 5.90 0.00 0.00 0.0000 5.90 89.60
05-25-04 95.50 5.68 0.00 0.00 0.0000 5.68 89.82
08-13-04 95.50 5.40 0.00 0.00 0.0000 5.40 90.10
11-17-04 95.50 5.89 0.00 0.00 0.0000 5.89 89.61
02-28-07 95.50 6.55 0.00 0.00 0.0000 6.55 88.95
08-23-07 95.50 7.20 0.00 0.00 0.0000 7.20 88.30
02-19-08 95.50 6.93 0.00 0.00 0.0000 6.93 88.57
08-5-08 95.50 6.96 0.00 0.00 0.0000 6.96 88.54
12-9-08 95.50 7.29 0.00 0.00 0.0000 7.29 88.21
06-8-09 95.50 6.18 0.00 0.00 0.0000 6.18 89.32
01-20-10 95.50 7.69 0.00 0.00 0.0000 7.69 87.81
07-7-10 95.50 6.25 0.00 0.00 0.0000 6.25 89.25
01-5-11 95.50 8.00 0.00 0.00 0.0000 8.00 87.50
07-7-11 95.50 6.27 0.00 0.00 0.0000 6.27 89.23
01-10-12 95.50 7.74 0.00 0.00 0.0000 7.74 87.76
07-25-12 95.50 6.25 0.00 0.00 0.0000 6.25 89.25
01-23-13 95.50 6.56 0.00 0.00 0.0000 6.56 88.94
08-1-13 95.50 6.92 0.00 0.00 0.0000 6.92 88.58
02-5-14 95.50 5.22 0.00 0.00 0.0000 5.22 90.28
03-4-15 95.50 6.42 0.00 0.00 0.0000 6.42 89.08
07-18-16 95.50 7.45 0.00 0.00 0.0000 7.45 88.05
03-1-17 95.50 9.11 0.00 0.00 0.0000 9.11 86.39
11-16-17 95.50 7.25 0.00 0.00 0.0000 7.25 88.25
02-8-22 95.50 7.83 0.00 0.00 0.0000 7.83 87.67
03-30-23 95.50 3.35 0.00 0.00 0.0000 3.35 92.15
09-28-00 95.08 8.23 0.00 0.00 0.0000 8.23 86.85
MW-9 10-3-01 95.08 10.38 0.00 0.00 0.0000 10.38 84.70
12-12-02 95.08 5.13 0.00 0.00 0.0000 5.13 89.95
04-29-03 95.08 6.59 0.00 0.00 0.0000 6.59 88.49
09-4-03 95.08 4.34 0.00 0.00 0.0000 4.34 90.74
11-17-03 95.08 7.44 0.00 0.00 0.0000 7.44 87.64
03-2-04 95.08 4.60 0.00 0.00 0.0000 4.60 90.48
05-25-04 95.08 6.06 0.00 0.00 0.0000 6.06 89.02
08-13-04 95.08 5.69 0.00 0.00 0.0000 5.69 89.39
11-17-04 95.08 6.01 0.00 0.00 0.0000 6.01 89.07
02-28-07 95.08 8.03 0.00 0.00 0.0000 8.03 87.05
08-23-07 95.08 4.50 0.00 0.00 0.0000 4.50 90.58
02-19-08 95.08 6.27 0.00 0.00 0.0000 6.27 88.81
08-5-08 95.08 10.00 0.00 0.00 0.0000 10.00 85.08
12-9-08 95.08 9.35 0.00 0.00 0.0000 9.35 85.73
01-23-13 95.08 9.34 0.00 0.00 0.0000 9.34 85.74
08-1-13 95.08 7.64 0.00 0.00 0.0000 7.64 87.44
02-5-14 95.08 7.02 0.00 0.00 0.0000 7.02 88.06
03-4-15 95.08 7.88 0.00 0.00 0.0000 7.88 87.20
07-18-16 95.08 8.00 0.00 0.00 0.0000 8.00 87.08
03-1-17 95.08 10.84 0.00 0.00 0.0000 10.84 84.24
11-16-17 95.08 8.07 0.00 0.00 0.0000 8.07 87.01
02-8-22 95.08 7.40 0.00 0.00 0.0000 7.40 87.68
03-30-23 95.08 7.08 0.00 0.00 0.0000 7.08 88.00
09-28-00 87.56 2.80 0.00 0.00 0.0000 2.80 84.76
MW-10 10-3-01 87.56 3.00 0.00 0.00 0.0000 3.00 84.56
12-12-02 87.56 2.30 0.00 0.00 0.0000 2.30 85.26
04-29-03 87.56 1.80 0.00 0.00 0.0000 1.80 85.76
09-4-03 87.56 1.99 0.00 0.00 0.0000 1.99 85.57
11-17-03 87.56 2.25 0.00 0.00 0.0000 2.25 85.31
03-2-04 87.56 2.08 0.00 0.00 0.0000 2.08 85.48
05-25-04 87.56 2.07 0.00 0.00 0.0000 2.07 85.49
08-13-04 87.56 2.62 0.00 0.00 0.0000 2.62 84.94
11-17-04 87.56 2.24 0.00 0.00 0.0000 2.24 85.32
02-28-07 87.56 2.47 0.00 0.00 0.0000 2.47 85.09
08-23-07 87.56 2.71 0.00 0.00 0.0000 2.71 84.85
02-19-08 87.56 3.65 0.00 0.00 0.0000 3.65 83.91
08-5-08 87.56 3.00 0.00 0.00 0.0000 3.00 84.56
12-9-08 87.56 2.65 0.00 0.00 0.0000 2.65 84.91
06-8-09 87.56 2.74 0.00 0.00 0.0000 2.74 84.82
01-20-10 87.56 2.84 0.00 0.00 0.0000 2.84 84.72
07-7-10 87.56 2.34 0.00 0.00 0.0000 2.34 85.22
01-5-11 87.56 2.81 0.00 0.00 0.0000 2.81 84.75
07-7-11 87.56 2.30 0.00 0.00 0.0000 2.30 85.26
01-10-12 87.56 2.32 0.00 0.00 0.0000 2.32 85.24
07-25-12 87.56 1.31 0.00 0.00 0.0000 1.31 86.25
01-23-13 87.56 3.30 0.00 0.00 0.0000 3.30 84.26
08-1-13 87.56 2.56 0.00 0.00 0.0000 2.56 85.00
02-5-14 87.56 2.48 0.00 0.00 0.0000 2.48 85.08
03-4-15 87.56 2.10 0.00 0.00 0.0000 2.10 85.46
07-18-16 87.56 3.45 0.00 0.00 0.0000 3.45 84.11
03-1-17 87.56 4.16 0.00 0.00 0.0000 4.16 83.40
11-16-17 87.56 2.92 0.00 0.00 0.0000 2.92 84.64
02-8-22 87.56 2.75 0.00 0.00 0.0000 2.75 84.81
03-30-23 87.56 2.48 0.00 0.00 0.0000 2.48 85.08
Page 3 of 4
TOC Depth Depth Free Free Corrected Corrected
Well Date Elevation To To Product Product Depth To Water
Number Gauged Groundwater Product Thickness Adjustment Water Elevation
(feet) (feet) (feet) (feet) (feet) (feet) (feet)
Table 4
Groundwater Elevation Data
Kim's Grocery Incident 12543
09-28-00 86.39 2.30 0.00 0.00 0.0000 2.30 84.09
MW-11 10-3-01 86.39 3.65 0.00 0.00 0.0000 3.65 82.74
02-28-07 86.39 1.10 0.00 0.00 0.0000 1.10 85.29
08-23-07 86.39 3.19 0.00 0.00 0.0000 3.19 83.20
02-19-08 86.39 2.49 0.00 0.00 0.0000 2.49 83.90
06-8-09 86.39 2.19 0.00 0.00 0.0000 2.19 84.20
01-23-13 86.39 2.48 0.00 0.00 0.0000 2.48 83.91
08-1-13 86.39 2.23 0.00 0.00 0.0000 2.23 84.16
02-5-14 86.39 NG
03-4-15 86.39 1.76 0.00 0.00 0.0000 1.76 84.63
07-18-16 86.39 NG
03-1-17 86.39 NG
11-16-17 86.39 NG
02-8-22 86.39 0.90 0.00 0.00 0.0000 0.90 85.49
03-30-23 86.39 NG
09-28-00 95.69 9.44 0.00 0.00 0.0000 9.44 86.25
VE-1 10-3-01 95.69 10.49 0.00 0.00 0.0000 10.49 85.20
12-12-02 95.69 9.47 0.00 0.00 0.0000 9.47 86.22
04-29-03 95.69 10.06 0.00 0.00 0.0000 10.06 85.63
09-4-03 95.69 7.94 0.00 0.00 0.0000 7.94 87.75
11-17-03 95.69 8.21 0.00 0.00 0.0000 8.21 87.48
03-2-04 95.69 7.60 0.00 0.00 0.0000 7.60 88.09
05-25-04 95.69 8.52 0.00 0.00 0.0000 8.52 87.17
08-13-04 95.69 8.42 0.00 0.00 0.0000 8.42 87.27
11-17-04 95.69 2.24 0.00 0.00 0.0000 2.24 93.45
02-28-07 95.69 8.59 0.00 0.00 0.0000 8.59 87.10
02-19-08 95.69 9.59 0.00 0.00 0.0000 9.59 86.10
08-5-08 95.69 10.12 0.00 0.00 0.0000 10.12 85.57
12-9-08 95.69 9.89 0.00 0.00 0.0000 9.89 85.80
06-8-09 95.69 8.87 0.00 0.00 0.0000 8.87 86.82
01-10-12 95.69 8.87 0.00 0.00 0.0000 8.87 86.82
07-25-12 95.69 9.43 0.00 0.00 0.0000 9.43 86.26
01-23-13 95.69 9.72 0.00 0.00 0.0000 9.72 85.97
08-1-13 95.69 8.95 0.00 0.00 0.0000 8.95 86.74
02-5-14 95.69 NG
03-4-15 95.69 8.73 0.00 0.00 0.0000 8.73 86.96
07-18-16 95.69 NG
03-1-17 95.69 NG
11-16-17 95.69 9.40 0.00 0.00 0.0000 9.40 86.29
02-8-22 95.69 8.35 0.00 0.00 0.0000 8.35 87.34
03-30-23 95.69 NG
09-28-00 NG NG
MW-18 10-3-01 NG NG
02-28-07 NG NG
08-23-07 NG NG
02-19-08 NG NG
06-8-09 NG NG
01-23-13 NG NG
08-1-13 NG NG
02-5-14 NG NG
03-4-15 NG NG
07-18-16 NG NG
03-1-17 NG NG
11-16-17 NG NG
02-8-22 NG NG
03-30-23 NG 6.67
09-28-00 95.74 8.70 0.00 0.00 0.0000 8.70 87.04
APEX 10-3-01 95.74 11.03 0.00 0.00 0.0000 11.03 84.71
MW-14 12-12-02 95.74 9.72 0.00 0.00 0.0000 9.72 86.02
04-29-03 95.74 7.66 0.00 0.00 0.0000 7.66 88.08
09-4-03 95.74 6.64 0.00 0.00 0.0000 6.64 89.10
11-17-03 95.74 7.40 0.00 0.00 0.0000 7.40 88.34
03-2-04 95.74 6.14 0.00 0.00 0.0000 6.14 89.60
05-25-04 95.74 6.98 0.00 0.00 0.0000 6.98 88.76
08-13-04 95.74 8.42 0.00 0.00 0.0000 8.42 87.32
11-17-04 95.74 7.20 0.00 0.00 0.0000 7.20 88.54
06-8-09 95.74 8.91 0.00 0.00 0.0000 8.91 86.83
01-20-10 95.74 9.17 0.00 0.00 0.0000 9.17 86.57
07-18-16 95.74 8.58 0.00 0.00 0.0000 8.58 87.16
03-1-17 95.74 10.49 0.00 0.00 0.0000 10.49 85.25
11-16-17 95.74 9.88 0.00 0.00 0.0000 9.88 85.86
02-8-22 95.74 7.31 0.00 0.00 0.0000 7.31 88.43
03-30-23 95.74 NG
09-28-00 92.02 7.47 0.00 0.00 0.0000 7.47 84.55
APEX 10-3-01 92.02 10.42 0.00 0.00 0.0000 10.42 81.60
MW-15 12-12-02 92.02 NG 0.00 0.00 0.0000 0.00 NG
04-29-03 92.02 3.75 0.00 0.00 0.0000 3.75 88.27
08-1-13 92.02 6.11 0.00 0.00 0.0000 6.11 85.91
02-5-14 92.02 NG
03-4-15 92.02 7.40 0.00 0.00 0.0000 7.40 84.62
07-18-16 92.02 NG
03-1-17 92.02 NG
11-16-17 92.02 NG
02-8-22 92.02 4.67 0.00 0.00 0.0000 4.67 87.35
03-30-23 92.02 NG
DNE = Did Not Exist. NS = Not Surveyed. NG = Not Gauged.
Page 4 of 4
NCAC 15A:2L PARAMETER UNITS DATEStandard(GCL)10-19-94384--- --- --- --- --- --- NA --- --- --- --- --- NA --- --- --- --- --- BENZENE*ug/l 12-14-95 730--- --- --- --- --- --- NA --- --- --- --- --- NA --- --- --- --- ---105-02-96---34 180BDL --- --- --- NA --- --- --- --- --- NA --- --- --- --- --- 08-16-96--- --- --- ---1.09 1400BDL NA --- --- --- --- --- NA --- --- --- --- ---[phone]--- BDL ---420BDL130BDL17,000 100 34--- --- --- NA9.4BDL --- --- ---02-17-00--- --- --- --- --- --- --- NA --- ---1.3 10BDL NA --- --- --- --- ---09-28-00NA BDL NA150BDL15BDL19,000 50 16BDL57BDL BDL1300 1.2--- --- ---10-03-01NA BDL NA25BDL26BDL9,600 420 69BDL2BDL BDL1000BDL BDL1.3 5212-12-02--- BDL ---85BDL340---1,700 1 56--- --- BDL ---670--- --- BDL ---04-29-03--- <1 ---41<1190<1<100<123<1 --- <1 --- <10 <1 <1 <1 ---09-04-03--- <1 ---41<1180---<100<123--- --- <1 --- <10 --- --- <1 ---11-17-03--- <1 ---11<1100---<100<111--- --- <1 --- <1 --- --- <1 ---03-02-04--- <1 ---3.0<1300---7.70.8514--- --- <1 --- <1 --- --- <1 ---05-25-04---5.5---1.3<.5200---6.5<.511--- --- <.5 --- <.5 --- --- <.5 ---08-13-04--- <1 --- <1 <1120---<50<112--- --- <1 --- <1 --- --- <1 ---11-17-04--- <.5 --- 0.65 <.597---<5 4.9 6.8--- --- <.5 --- <.5 --- --- <.5 ---02-28-07--- <.5 --- <0.5 ---2.6<0.545<5 0.92 <0.5 --- <0.5 --- --- --- --- <0.5 ---08-23-07--- <0.5 --- --- <0.5 --- ---79 87 13<0.5 --- --- --- --- --- <0.5 <0.5 ---02-19-08--- <0.5 --- <0.5 <0.522<0.5120 28 6.3<0.5 --- <0.5 --- --- --- --- --- ---08-05-08--- --- --- --- ---8.4---120 36 3--- --- <0.5 --- --- --- --- --- ---12-09-08--- <0.5 --- <0.5 ---41---210 50 7.1--- --- <0.5 --- --- --- --- --- ---06-08-09--- <0.5 --- <0.5 <0.513<0.5110---11<0.5 --- <0.5 ---260--- <0.5 --- ---01-20-10--- --- --- --- ---2.1---220---4.7--- --- --- ---310--- --- --- ---07-07-10--- <0.5 --- --- ---2.8---390---9.8--- --- --- --- --- --- --- --- ---01-05-11--- <0.5 --- --- ---79---120---4.6--- --- --- --- --- --- --- --- ---07-07-11--- <0.5 --- --- ---5---100---9.9--- --- --- --- --- --- --- --- ---01-10-12--- <0.5 --- --- ---4.1---118---4.3--- --- <0.5 --- --- --- <0.5 --- ---07-25-12--- <0.5 --- --- ---8.6---302---6.3--- --- <0.5 --- --- --- <0.5 --- ---01-23-13--- <0.5 --- --- <0.537.8---14.6 4 5.4<0.5 --- <0.5 --- --- --- <0.5 --- ---08-01-13 ---BDL---BDL--- 1.3BDL51.8BDL2.1BDL --- BDL--- ---BDL BDL--- ---02-05-14---NS---BDL---BDL NS127 2.3 4.8BDL --- NS--- ---NS NS--- ---03-04-15 ---BDL---BDL--- 5.3BDL25 4.6 6.8BDL --- BDL--- ---BDL BDL--- ---07-18-16 --- --- --- --- --- 1.8 --- 7480.684.1 --- --- --- ---0.65--- --- --- ---03-01-17 --- --- --- --- --- 27.1---2590.942.4--- --- --- ---1.5--- --- --- ---02-09-22NS ND---ND ND ND ND1,300ND1.7ND---ND ND BDL ND --- --- ---MW-17MW-11MW-10MW-9MW-7 MW8BMW-12*MONITORING WELLSTABLE 5Historical Groundwater Analytical DataKim's Grocery Incident 12543MW-1*MW-2MW-3*MW-4 MW-5 MW-6MW-18*VE-1 SWAPEXMW-14APEXMW-15MW-16Page 1 of 10
NCAC 15A:2L PARAMETER UNITS DATEStandard(GCL)MW-17MW-11MW-10MW-9MW-7 MW8BMW-12*MONITORING WELLSTABLE 5Historical Groundwater Analytical DataKim's Grocery Incident 12543MW-1*MW-2MW-3*MW-4 MW-5 MW-6MW-18*VE-1 SWAPEXMW-14APEXMW-15MW-1610-19-9412,220--- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- TOLUENE*ug/l 12-14-95950 --- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- 60005-02-96--- 260 240 BDL --- --- --- NA --- --- --- --- --- NA --- ------ --- ---08-16-96--- --- --- --- BDL2900BDL NA --- --- --- --- --- NA --- ------ --- --- (260,000)11-22-99--- BDL --- 110 BDL 48 BDL43,00024 81 --- --- --- NA BDL 140--- --- ---02-17-00--- --- --- --- --- --- --- NA --- --- BDL BDL BDL NA --- ------ --- ---09-28-00NA BDL NA 6.8 BDL 7.1 BDL62,0009.4 3.9 BDL BDL BDL BDL1400BDL--- --- ---10-03-01NA BDL NA 1.7 BDL 3.9 BDL32,00013 3.8 BDL BDL BDL BDL 73 BDL BDL BDL 1.112-12-02--- BDL --- 43 BDL 470 ---21,000BDL 3.2 --- --- BDL --- 23 --- --- BDL ---04-29-03--- <1 --- 110 <1 220 <13,900<1 3.2 <1 --- <1 --- <10 <1 <1 <1 ---09-04-03--- <1 --- 76 <1 120 ---2,600<1 11 --- --- <1 --- <10 --- --- <1 ---11-17-03--- 14 --- 2.5 <1 16 ---1,700<1 1.7 --- --- <1 --- <1 --- --- <1 ---03-02-04--- <1 --- 0.7 <1 180 --- 320 <1 4.3 --- --- <1 --- <1 --- --- <1 ---05-25-04--- <.5 --- <.5 <.5 42 --- 640 <.5 4.3 --- --- <.5 --- <.5 --- --- <.5 ---08-13-04--- <5 --- <5 <5 <5 --- <250 <5 <5 --- --- <5 --- <5 --- --- <5 ---11-17-04--- <.5 --- <.5 <.5 6.2 --- 170.0 <.5 2.1 --- --- <.5 --- <.5 --- --- <.5 ---02-28-07--- <.5 --- <0.5 --- <0.5 <0.5 6.7 <5 <0.5 <0.5 --- <0.5 --- --- --- --- <0.5 ---08-23-07--- <0.5 --- --- <0.5 --- --- 16.0 <0.5 1.5 <0.5 --- --- --- --- --- <0.5 <0.5 ---02-19-08--- <0.5 --- <0.5 <0.5 6.5 <0.5 15.0 <0.5 0.63 <0.5 --- <0.5 --- --- --- --- --- ---08-05-08--- --- --- --- --- 1.1 --- 11.0 <0.5 <0.5 --- --- <0.5 --- --- --- --- --- ---12-09-08--- <0.5 --- <0.5 --- 6.4 --- 12 0.65 0.54 --- --- <0.5 --- --- --- --- --- ---06-08-09--- <0.5 --- <0.5 <0.5 4.2 2.2 8 --- 0.72 <0.5 --- <0.5 --- 1.2 --- <0.5 --- ---01-20-10--- --- --- --- --- 0.93 --- 30 --- <0.5 --- --- --- --- 13 --- --- --- ---07-07-10--- <0.5 --- --- --- 1.3 --- 45 --- 0.89 --- --- --- --- --- --- --- --- ---01-05-11--- <0.5 --- --- --- 42 --- <20 --- <0.5 --- --- --- --- --- --- --- --- ---07-07-11--- <0.5 --- --- --- 2.6 --- 9.7 --- 1 --- --- --- --- --- --- --- --- ---01-10-12--- <0.5 --- --- --- 1.1 --- 6.5 --- <0.5 --- --- <0.5 --- --- --- <0.5 --- ---07-25-12--- <0.5 --- --- --- 1.4 --- 11.1 --- 0.54 --- --- <0.5 --- --- --- <0.5 --- ---01-23-13--- <0.5 --- --- <0.5 17.4 --- 0.76 <0.5 0.54 <0.5 --- <0.5 --- --- --- <0.5 --- ---08-01-13--- BDL --- BDL --- BDL BDL 1.8 BDL BDL BDL --- BDL --- --- BDL BDL --- ---02-05-14--- NS --- BDL --- BDL NS 3.9 BDL BDL BDL --- NS--- ---NS NS --- ---03-04-15 ---BDL---BDL --- 7.7 BDL 0.59 0.54 0.53 BDL --- BDL--- ---BDL BDL--- ---07-18-16 --- --- --- --- ---0.73---11.1 0.81 ND--- --- --- ---0.61--- --- --- ---03-01-17 --- --- --- --- ---40.5 --- 3.5 1.1 ND --- --- --- --- 2.4 --- --- --- ---02-09-22ND ND---ND ND ND ND 8.4 ND ND ND---ND ND 3 ND --- --- ---Page 2 of 10
NCAC 15A:2L PARAMETER UNITS DATEStandard(GCL)MW-17MW-11MW-10MW-9MW-7 MW8BMW-12*MONITORING WELLSTABLE 5Historical Groundwater Analytical DataKim's Grocery Incident 12543MW-1*MW-2MW-3*MW-4 MW-5 MW-6MW-18*VE-1 SWAPEXMW-14APEXMW-15MW-1610-19-945,440--- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- ETHYLBENZENE*ug/l 12-14-95 330--- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- 60005-02-96---130 280BDL --- --- --- NA --- --- --- --- --- NA --- ------ --- ---08-16-96--- --- --- --- BDL583BDL NA --- --- --- --- --- NA --- ------ --- --- (84,500)11-22-99--- BDL ---400BDL54BDL2,800 34 57--- --- --- NA 14 BDL--- --- ---02-17-00--- --- --- --- --- --- --- NA --- --- BDL BDL BDL NA --- ------ --- ---09-28-00NA BDL NA120BDL 11 BDL560011 18 BDL 1.8 BDL BDL 44 BDL--- --- ---10-03-01NA BDL NA32BDL 9.6 BDL310021 5.8 BDL BDL BDL BDL830BDL 2.1 BDL 3.912-12-02--- BDL ---290BDL260---3600BDL 12 --- --- BDL --- 26 --- --- BDL ---04-29-03--- <1 ---560<1350<1550<1 6.6 <1 --- <1 --- <10 <1 <1 <1 ---09-04-03--- <1 ---670<1130---880<150--- --- <1 --- <10 --- --- <1 ---11-17-03--- <1 ---67<186---1,000<1 20 --- --- <1 --- <1 --- --- <1 ---03-02-04--- <1 --- 24 <1160---350<1 16 --- --- <1 --- <1 --- --- <1 ---05-25-04--- <.5 --- 0.66 <.539---430<.5 5.1 --- --- <.5 --- <.5 --- --- <.5 ---08-13-04--- <1 --- 1.7 <1 8.4 ---280<1 21 --- --- <1 --- <1 --- --- <1 ---11-17-04--- <.5 --- 1.1 <.534---4700.52 14 --- --- <.5 --- <.5 --- --- <.5 ---02-28-07--- <.5 --- <0.5 --- 2.5 <0.5 120 <5 <0.5 <0.5 --- <0.5 --- --- --- --- <0.5 ---08-23-07--- <0.5 --- --- <0.5 --- ---580<0.5 32 <0.5 --- --- --- --- --- <0.5 <0.5 ---02-19-08--- <0.5 --- <0.5 <0.5 15 <0.5570<0.5 13 <0.5 --- <0.5 --- --- --- --- --- ---08-05-08--- --- --- --- --- 32 ---550<0.5 0.74 --- --- <0.5 --- --- --- --- --- ---12-09-08--- <0.5 --- <0.5 --- 22 --- 510 <0.5 16 --- --- <0.5 --- --- --- --- --- ---06-08-09--- <0.5 --- <0.5 <0.5 20 <0.5 280 --- 23 <0.5 --- <0.5 --- 2.9 --- <0.5 --- ---01-20-10--- --- --- --- --- 8.2 --- 290 --- 7.5 --- --- --- --- 56 --- --- --- ---07-07-10--- <0.5 --- --- --- 6.3 --- 390 --- 26 --- --- --- --- --- --- --- --- ---01-05-11--- <0.5 --- --- --- 89 --- 140 --- 7.5 --- --- --- --- --- --- --- --- ---07-07-11--- <0.5 --- --- --- 7.7 --- 122 --- 16.8 --- --- --- --- --- --- --- --- ---01-10-12--- <0.5 --- --- --- 3.3 --- 67 --- 5 --- --- <0.5 --- --- --- <0.5 --- ---07-25-12--- <0.5 --- --- --- 9.9 --- 156 --- 11.4 --- --- <0.5 --- --- --- <0.5 --- ---01-23-13--- <0.5 --- --- <0.5 49.7 --- 6.8 <0.5 14.1 <0.5 --- <0.5 --- --- --- <0.5 --- ---08-01-13--- BDL --- BDL --- 0.74 BDL 25.5 BDL 0.51 BDL --- BDL --- --- BDL BDL --- ---02-05-14--- NS --- BDL --- BDL NS 65.4 0.77 9.8 BDL --- NS--- ---NS NS --- ---03-04-15 ---BDL---BDL --- 22 BDL 11 2 19 BDL --- BDL--- ---BDL BDL--- ---07-18-16 --- --- --- --- ---6.4---238 0.68 6.6--- --- --- ---0.85--- --- --- ---03-01-17 --- --- --- --- ---111 --- 86.9 2.2 ND --- --- --- --- 14.5 --- --- --- ---02-09-22ND ND---ND ND ND ND 226 ND 2.7 ND---ND ND 28.9 ND --- --- ---Page 3 of 10
NCAC 15A:2L PARAMETER UNITS DATEStandard(GCL)MW-17MW-11MW-10MW-9MW-7 MW8BMW-12*MONITORING WELLSTABLE 5Historical Groundwater Analytical DataKim's Grocery Incident 12543MW-1*MW-2MW-3*MW-4 MW-5 MW-6MW-18*VE-1 SWAPEXMW-14APEXMW-15MW-1610-19-9423,200--- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- TOTAL XYLENES*ug/l 12-14-95 1000--- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- 50005-02-96---810 970BDL --- --- --- NA --- --- --- --- --- NA --- ------ --- ---08-16-96--- --- --- --- BDL2690BDL NA --- --- --- --- --- NA --- ------ --- --- (85,500)11-22-99--- BDL ---600BDL 96 BDL11,00055 450 --- --- --- NA 39 BDL--- --- ---02-17-00--- --- --- --- --- --- --- NA --- --- BDL 3 BDL NA --- ------ --- ---09-28-00NA BDL NA 96 BDL 16 BDL24,00019 79 BDL 11 BDL BDL 200 BDL--- --- ---10-03-01NA BDL NA 23 BDL 11 BDL14,000BDL 80 BDL BDL BDL BDL2500BDL 3 BDL 1412-12-02--- BDL ---560BDL2100---20,000BDL 70 --- --- BDL --- BDL --- --- BDL ---04-29-03--- <3 ---1600<3620<34,800<3 35 <3 --- <3 --- <30 <3 <3 <3 ---09-04-03--- <3 --- 200 <3 460 ---5,200<3 210 --- --- <3 --- <30 --- --- <3 ---11-17-03--- <3 --- 110 <3 100 ---5,300<3 65 --- --- <3 --- <3 --- --- <3 ---03-02-04--- <3 --- 6.1 <3 320 ---3,000<3 70 --- --- <3 --- <3 --- --- <3 ---05-25-04--- <.5 --- 3.8 <.5 61 --- 510 <.5 25 --- --- <.5 --- <.5 --- --- <.5 ---08-13-04--- <1 --- <1 <1 171 ---2,170<1 89.6 --- --- <1 --- <1 --- --- <1 ---11-17-04--- <1 --- <1.5 <1.5 25.8 ---4,0000.79 62.5 --- --- <1.5 --- <1.5 --- --- <1.5 ---02-28-07--- <1.5 --- <1.5 --- 1.13J <1.5881<15 <1.5 <1.5 --- <1.5 --- --- --- --- <1.5 ---08-23-07--- <1.5 --- --- <1.5 --- ---4,114<1.5 88.2 <1.5 --- --- --- --- --- <1.5 <1.5 ---02-19-08--- <1.5 --- <1.5 <1.5 15.91 <1.54,400<1.5 45.64 <1.5 --- <1.5 --- --- --- --- --- ---08-05-08--- --- --- --- --- 13.8 ---1,116<1.5 1.1 --- --- <1.5 --- --- --- --- --- ---12-09-08--- <1.5 --- <1.5 --- 15.5 ---22182.4 48.3 --- --- <1.5 --- --- --- --- --- ---06-08-09--- <1.5 --- <1.5 <1.5 21 <1.51108.6--- 51 <1.5 --- <1.5 --- 57.1 --- <1.5 --- ---01-20-10--- --- --- --- --- 12.79 ---1212--- 22 --- --- --- --- 196.3 --- --- --- ---07-07-10--- <1.5 --- --- --- 8 ---1230--- 58.1 --- --- --- --- --- --- --- --- ---01-05-11--- <1.5 --- --- --- 65.1 ---500--- 23 --- --- --- --- --- --- --- --- ---07-07-11--- <1.5 --- --- --- 19.39 --- 443.4 --- 39.53 --- --- --- --- --- --- --- --- ---01-10-12--- <1.5 --- --- --- 3.3 --- 294 --- 14 --- --- <1.5 --- --- --- <1.5 --- ---07-25-12--- <1.5 --- --- --- 5.5 ---582.2--- 23.9 --- --- <1.5 --- --- --- <1.5 --- ---01-23-13--- <1.5 --- --- <1.5 25.6 --- 17.1 4.5 42.02 <1.5 --- <1.5 --- --- --- <1.5 --- ---08-01-13--- BDL --- BDL --- BDL BDL 71.6 1 BDL BDL --- BDL --- --- BDL BDL --- ---02-05-14--- NS --- BDL --- BDL NS 169.4 1.3 34.22 BDL --- NS--- ---NS NS --- ---03-04-15 ---BDL---BDL --- 33.5 BDL 21 3.57 54.73 BDL --- BDL--- ---BDL BDL--- ---07-18-16 --- --- --- --- ---3.7---417.4 2.2 12.7--- --- --- ---3.2--- --- --- ---03-01-17 --- --- --- --- ---161.3 --- 141 3.4 1.3 --- --- --- --- 37.2 --- --- --- ---02-09-22ND ND---ND ND ND ND 58 ND 6.7 ND---ND ND 125 ND --- --- ---Page 4 of 10
NCAC 15A:2L PARAMETER UNITS DATEStandard(GCL)MW-17MW-11MW-10MW-9MW-7 MW8BMW-12*MONITORING WELLSTABLE 5Historical Groundwater Analytical DataKim's Grocery Incident 12543MW-1*MW-2MW-3*MW-4 MW-5 MW-6MW-18*VE-1 SWAPEXMW-14APEXMW-15MW-1610-19-9441244 --- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- TOTAL BTEXug/l 12-14-953010 --- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- No Standard05-02-96--- 1234 1670 BDL --- --- --- NA --- --- --- --- --- NA --- ------ --- ---(Sum of Benzene,08-16-96--- --- --- --- 1.09 7573 BDL NA --- --- --- --- --- NA --- ------ --- ---Toluene, Ethyl-11-22-99--- BDL --- 1530 BDL 328 BDL 73800 213 622 --- --- --- NA 62.4 140--- --- ---benzene, & Xylenes)02-17-00--- --- --- --- --- --- --- NA --- --- 1.3 84.8 BDL NA --- ------ --- ---09-28-00NA BDL NA 372.8 BDL 49.1 BDL 110600 89.4 116.9 BDL 69.8 BDL BDL 2944 1.2--- --- ---10-03-01NA BDL NA 81.7 BDL 50.5 BDL 58700 454 158.6 BDL 2 BDL BDL 4403 BDL 5.1 1.3 7112-12-02--- BDL --- 978 BDL 3170 --- 46300 1 141.2 --- --- BDL --- 719 --- --- BDL ---04-29-03--- <3 --- 2311 <3 1380 <3 9250 <3 67.8 <3 --- <3 --- <30 <3 <3 <3 ---09-04-03--- BDL --- 987 BDL 890 --- 8680 BDL 294 --- --- BDL --- BDL --- --- BDL ---11-17-03--- 14 --- 190.5 0 302 --- 8000 0 97.7 --- --- BDL --- BDL --- --- BDL ---03-02-04--- BDL --- 33.8 BDL 960 --- 3677.7 0.85 104.3 --- --- BDL --- BDL --- --- BDL ---05-25-04--- 5.5 --- 5.76 BDL 342 --- 1586.5 <.5 45.4 --- --- BDL --- BDL --- --- BDL ---08-13-04--- BDL --- 1.7 BDL 299.4 --- 2450 BDL 122.6 --- --- BDL --- BDL --- --- BDL ---11-17-04--- BDL --- 1.75 BDL 163 --- 4640 6.21 85.4 --- --- BDL --- BDL --- --- BDL ---02-28-07--- BDL --- BDL --- 6.23 BDL 1052.7 BDL 0.92 BDL --- BDL --- --- --- --- BDL ---08-23-07--- BDL --- --- BDL --- --- 4789 87 361.5 BDL --- --- --- --- --- BDL BDL ---02-19-08--- BDL --- BDL BDL 59.41 BDL 5105 28 66 BDL --- BDL --- --- --- --- --- ---08-05-08--- --- --- --- --- 55.3 --- 1797 36 4.84 --- --- BDL --- --- --- --- --- ---12-09-08--- BDL --- BDL --- 84.9 --- 2950 53.05 71.94 --- --- BDL --- --- --- --- --- ---06-08-09--- BDL --- BDL BDL 58.2 2.2 1506.6 --- 85.72 BDL --- BDL --- 321.2 --- BDL --- ---01-20-10--- --- --- --- --- 24.02 --- 1752 --- 34.2 --- --- --- --- 575.3 --- --- --- ---07-07-10--- BDL --- --- --- 18.4 --- 2055 --- 93.9 --- --- --- --- --- --- --- --- ---01-05-11--- BDL --- --- --- 275.1 --- 760 --- 35.1 --- --- --- --- --- --- --- --- ---07-07-11--- BDL --- --- --- 34.69 --- 665.4 --- 66.23 --- --- --- --- --- --- --- --- ---01-10-12--- BDL --- --- --- 11.8 --- 485.5 --- 23.3 --- --- BDL --- --- --- BDL --- ---07-25-12--- BDL --- --- --- 25.4 --- 1051.3 --- 41.6 --- --- BDL --- --- --- BDL --- ---01-23-13--- BDL --- --- BDL 130.5 --- 39.26 8.5 61.52 BDL --- BDL --- --- --- BDL --- ---08-01-13--- BDL --- BDL --- 92.89 BDL 150.7 1 2.61 BDL --- BDL --- --- BDL BDL --- ---02-05-14--- NS --- BDL --- BDL NS 365.7 4.37 48.82 BDL --- NS--- ---NS NS --- ---03-04-15 ---BDL---BDL --- 68.5 BDL 57.59 10.71 81.06 BDL --- BDL--- ---BDL BDL--- ---07-18-16 --- --- --- --- ---12.63---1414.5 4.37 23.4--- --- --- ---5.31--- --- --- ---03-01-17 --- --- --- --- ---339.9 --- 490.4 7.64 3.7 --- --- --- --- 55.6 --- --- --- ---02-09-22ND ND---ND ND ND ND 1,592 ND 11.1 ND---ND ND 156.9 ND --- --- ---Page 5 of 10
NCAC 15A:2L PARAMETER UNITS DATEStandard(GCL)MW-17MW-11MW-10MW-9MW-7 MW8BMW-12*MONITORING WELLSTABLE 5Historical Groundwater Analytical DataKim's Grocery Incident 12543MW-1*MW-2MW-3*MW-4 MW-5 MW-6MW-18*VE-1 SWAPEXMW-14APEXMW-15MW-1610-19-94BDL --- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- MTBEug/l 12-14-95BDL --- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- 20Methyl Tert -05-02-96--- NA NA NA --- --- --- NA --- --- --- --- --- NA --- ------ --- ---Butyl Ether*08-16-96--- --- --- --- NA NA NA NA --- --- --- --- --- NA --- ------ --- --- (20,000)11-22-99--- BDL --- BDL 5 100 BDL BDL4000 1300--- --- --- NA2900140--- --- ---02-17-00--- --- --- --- --- --- --- NA --- --- 7.5 BDL BDL NA --- ------ --- ---09-28-00NA BDL NA BDL 7.5 6.2 BDL BDL1500 6607.2 BDL BDL 257900 210 --- --- ---10-03-01NA BDL NA BDL 5.8 9.6 BDL BDL3500 900BDL BDL BDL 643100 1700100 5.5 BDL12-12-02--- BDL --- BDL BDL 52 --- BDL260 1100--- --- BDL ---4600--- --- BDL ---04-29-03--- 26 --- <50 <5 110 30 <500250 1100<5 --- <5 ---7600 2400<5 <5 ---09-04-03--- <5 --- <50 <5 40 --- <500 461100--- --- <5 --- 83 --- --- <5 ---11-17-03--- 78 --- <5 <5 90 --- <500 23940--- --- <5 --- 41 --- --- <5 ---03-02-04--- 19 --- <5 <5 100 --- <50 20740--- --- <5 --- 30 --- --- <5 ---05-25-04--- 98 --- <.5 <.5 110 --- <5 0.89730--- --- <.5 --- 17 --- --- <.5 ---08-13-04--- 42 --- <5 <5 71 --- <250 <5630--- --- <5 --- 12 --- --- <5 ---11-17-04--- 64 --- <.5 <.5 71 --- <5 45620--- --- <.5 --- 17 --- --- <.5 ---02-28-07--- <.5 --- <0.5 --- 4.335011630140 <0.5 --- <0.5 --- --- --- --- <0.5 ---08-23-07--- 1.5 --- --- <0.5 --- --- 31 24 130 28 --- --- --- --- --- <0.5 <0.5 ---02-19-08--- <0.5 --- <0.5 <0.5 <0.5 3.2 190 5.5 100 13 --- <0.5 --- --- --- --- --- ---08-05-08--- --- --- --- --- 1.2 ---88023 72 --- --- <0.5 --- --- --- --- --- ---12-09-08--- <0.5 --- <0.5 --- 0.53 ---200014 57 --- --- <0.5 --- --- --- --- --- ---06-08-09--- <0.5 --- <0.5 <0.5 1.7 731000--- 50 14 --- <0.5 --- 10 --- <0.5 --- ---01-20-10--- --- --- --- --- 0.51 ---1700--- 34 --- --- --- --- 6 --- --- --- ---07-07-10--- <1 --- --- --- 1.8 ---2400---30--- --- --- --- --- --- --- --- ---01-05-11--- <1 --- --- --- <1 ---1300---20--- --- --- --- --- --- --- --- ---07-07-11--- <0.5 --- --- --- 0.53 ---260--- 14.8 --- --- --- --- --- --- --- --- ---01-10-12--- <0.5 --- --- --- <0.5 ---647--- 11.8 --- --- <0.5 --- --- --- 2.3 --- ---07-25-12--- <0.5 --- --- --- <0.5 ---389--- 9.1 --- --- <0.5 --- --- --- 2.2 --- ---01-23-13--- <0.5 --- --- <0.5 <0.5 --- 12.5 1.1 7.1 2.2 --- <0.5 --- --- --- 1.5 --- ---08-01-13--- BDL --- 1.1 --- BDL 2.749.1BDL 3.4 1.7 --- BDL --- --- 6 BDL --- ---02-05-14--- NS --- 11.2 --- BDL NS56.7BDL 4.9 1.7 --- NS--- ---NS NS --- ---03-04-15 ---BDL---2.7 --- BDL 4.9300.51J 5.2 1.1 --- BDL--- ---2.5 3.2--- ---07-18-16 --- --- --- --- ---ND--- 860ND 2.2--- --- --- ---0.88--- --- --- ---03-01-17 --- --- --- --- ---ND ---8830.56 2.4 --- --- --- --- ND --- --- --- ---02-09-22ND ND---ND ND ND 1.5409ND 1.7 0.97---ND ND ND 0.61 --- --- ---Page 6 of 10
NCAC 15A:2L PARAMETER UNITS DATEStandard(GCL)MW-17MW-11MW-10MW-9MW-7 MW8BMW-12*MONITORING WELLSTABLE 5Historical Groundwater Analytical DataKim's Grocery Incident 12543MW-1*MW-2MW-3*MW-4 MW-5 MW-6MW-18*VE-1 SWAPEXMW-14APEXMW-15MW-1610-19-94NA --- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- ---Isopropyl Ether*ug/l 12-14-95NA --- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- 7005-02-96--- NA NA NA --- --- --- NA --- --- --- --- --- NA --- ------ --- ---08-16-96--- --- --- --- NA NA NA NA --- --- --- --- --- NA --- ------ --- --- (70,000)11-22-99--- BDL --- 50 BDL 34 5.2600 360 100--- --- --- NA 63 9.6--- --- ---02-17-00--- --- --- --- --- --- --- NA --- --- BDL BDL BDL NA --- ------ --- ---09-28-00NA BDL NA 16 BDL BDL BDL58054 65 BDL 7.2 BDL 6.77630--- --- ---10-03-01NA BDL NA BDL BDL BDL BDL BDL BDL72BDL BDL BDL 7.5 BDL 40 BDL BDL 7.212-12-02--- BDL --- BDL BDL 7.7 --- BDL BDL 65 --- --- BDL --- BDL --- --- BDL ---04-29-03--- <5 --- <50 <5 <50 <5 <500 <579<5 --- <5 --- 54 33 <5 <5 ---09-04-03--- <5 --- 22 <5 12 --- <500 <573--- --- <5 --- 11 --- --- <5 ---11-17-03--- <5 --- <5 <5 <50 --- <500 <5 63 --- --- <5 --- 9.8 --- --- <5 ---03-02-04--- 2.8 --- <5 <5 <5 --- <50 <5 48 --- --- <5 --- 6.7 --- --- <5 ---05-25-04--- 16 --- <.5 <.5 <.5 --- <5 <.5 61 --- --- <.5 --- 9.7 --- --- <.5 ---08-13-04--- <5 --- <5 <5 <50 --- <250 <5 50 --- --- <5 --- <5 --- --- <5 ---11-17-04--- 7.1 --- <.5 <.5 4 --- <5 <.5 58 --- --- <.5 --- 4.1 --- --- <.5 ---02-28-07--- <.5 --- <0.5 --- <0.5 19 <5 16 17 <0.5 --- <0.5 --- --- --- --- <0.5 ---08-23-07--- 0.65 --- --- <0.5 --- --- <5 7 27 <0.5 --- --- --- --- --- <0.5 <0.5 ---02-19-08--- <0.5 --- <0.5 <0.5 <0.5 <0.5 <5 1.5 22 <0.5 --- <0.5 --- --- --- --- --- ---08-05-08--- --- --- --- --- <0.5 --- <5 5.1 18 --- --- <0.5 --- --- --- --- --- ---12-09-08--- <0.5 --- <0.5 --- <0.5 --- <0.5 4.7 21 --- --- <0.5 --- --- --- --- --- ---06-08-09--- <0.5 --- <0.5 <0.5 <0.5 5.7 <0.5 --- 13 0.85 --- <0.5 --- 6.7 --- <0.5 --- ---01-20-10--- --- --- --- --- <0.5 --- 6.2 --- 10 --- --- --- --- 3.4 --- --- --- ---07-07-10--- <0.5 --- --- --- <0.5 --- 9.8 --- 10 --- --- --- --- --- --- --- --- ---01-05-11--- <0.5 --- --- --- <0.5 --- <20 --- 11 --- --- --- --- --- --- --- --- ---07-07-11--- <0.5 --- --- --- <0.5 --- <2.5 --- 6.9 --- --- --- --- --- --- --- --- ---01-10-12--- <0.5 --- --- --- <0.5 --- 4 --- 6 --- --- <0.5 --- --- --- 0.52 --- ---07-25-12--- <0.5 --- --- ---<0.5--- 3.7 --- 4.8 --- --- <0.5 --- --- --- 0.57 --- ---01-23-13--- <0.5 --- --- <0.5 <0.5 --- <0.5 6.7 6.4 <0.5 --- <0.5 --- --- --- <0.5 --- ---08-01-13--- BDL --- BDL --- BDL BDL 0.7 BDL 1.3 BDL --- BDL --- --- 2.3 BDL --- ---02-05-14--- NS --- BDL --- BDL NS 0.92 1.4 3.1 BDL --- NS--- ---NS NS --- ---03-04-15 ---BDL---BDL --- BDL 1.1 BDL 2 3.5 BDL --- BDL--- ---0.7 BDL--- ---07-18-16 --- --- --- --- ---1.3---11.6 ND 3.1--- --- --- ---0.57--- --- --- ---03-01-17 --- --- --- --- ---0.54 --- 9.9 0.99 3.1 --- --- --- --- ND --- --- --- ---02-09-22ND ND---ND ND ND BDL 12.5 ND 2.1 ND---ND ND ND ND --- --- ---Isopropylbenzene (Cumene)ug/l 02-09-22ND ND---ND ND ND ND 39.3 ND 2 ND---ND ND 22 ND --- --- ---70(30500)sec-Butylbenzeneug/l 02-09-22ND ND---ND ND ND ND ND ND BDL ND---ND ND 2.5 ND --- --- ---70(8,800)n-Butylbenzeneug/l 02-09-22ND ND---ND ND ND ND ND ND BDL ND---ND ND 4.6 ND --- --- ---70(5,900)n-Propylbenzeneug/l 02-09-22ND ND---ND ND ND ND91.9ND 3.7 ND---ND ND 36.4 ND --- --- ---70(26,100)Page 7 of 10
NCAC 15A:2L PARAMETER UNITS DATEStandard(GCL)MW-17MW-11MW-10MW-9MW-7 MW8BMW-12*MONITORING WELLSTABLE 5Historical Groundwater Analytical DataKim's Grocery Incident 12543MW-1*MW-2MW-3*MW-4 MW-5 MW-6MW-18*VE-1 SWAPEXMW-14APEXMW-15MW-1610-19-94NA --- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- Naphthaleneug/l 12-14-95BDL --- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- 605-02-96--- BDL BDL91--- --- --- NA--- --- --- --- --- NA--- ------ --- ---08-16-96--- --- --- --- BDL 11.8 BDL NA --- --- --- --- --- NA --- ------ --- --- (6,000)11-22-99--- BDL ---43BDL BDL BDL840 27BDL --- --- --- NA 16 BDL--- --- ---02-17-00--- --- --- --- --- --- --- NA --- --- BDL BDL BDL NA --- ------ --- ---9-28-00*NA BDL NA 19 BDL BDL BDL570BDL 15 BDL BDL BDL BDL 5.6 BDL--- --- ---10-03-01*NA BDL NA BDL BDL BDL BDL BDL BDL22BDL BDL BDL BDL110BDL BDL BDL BDL12-12-02--- BDL ---50BDL160---650BDL 12 --- --- BDL --- BDL --- --- BDL ---04-29-03--- <5 ---<50<5180<5 <500 <5 7.7 <5 --- <5 --- <50 <5 <5 <5 ---09-04-03--- <5 ---190<571--- <500 <527--- --- <5 --- <50 --- --- <5 ---11-17-03--- <5 ---45<528--- <500 <5 8.7 --- --- <5 --- <5 --- --- <5 ---03-02-04--- <5 --- 3.2 <557---140<5 6.3 --- --- <5 --- <5 --- --- <5 ---05-25-04--- <.5 --- 0.69 <.5 20 ---140<.5 3.6 --- --- <.5 --- <.5 --- --- <.5 ---08-13-04--- NA --- NA NA NA --- NA NA NA --- --- NA --- NA --- --- NA ---11-17-04--- <.5 --- <.5 <.5 14 ---200<.5 3.4 --- --- <.5 --- <.5 --- --- <.5 ---02-28-07--- <.5 --- <0.5 --- 3 <0.594<5 <0.5 <0.5 --- <0.5 --- --- --- --- <0.5 ---08-23-07--- <0.5 --- --- <0.5 --- ---360<0.5 20 <0.5 --- --- --- --- --- <0.5 <0.5 ---02-19-08--- <0.5 --- <0.5 <0.5 3.2 <0.5350<0.5 6.1 <0.5 --- <0.5 --- --- --- --- --- ---08-05-08--- --- --- --- --- 9.2 ---4101.9J 2.9 --- --- <0.5 --- --- --- --- --- ---12-09-08--- <0.5 --- <0.5 --- 7.3 ---330<0.5 11 --- --- <0.5 --- --- --- --- --- ---06-08-09--- <2 --- <2 <2 9.8 <2130--- 10 <2 --- <2 ---60--- <2 --- ---01-20-10--- --- --- --- --- 3.3 ---190--- 6.2 --- --- --- ---97--- --- --- ---07-07-10--- <1 --- --- --- 5 ---180---15--- --- --- --- --- --- --- --- ---01-05-11--- <1 --- --- --- 14 ---87---7.8--- --- --- --- --- --- --- --- ---07-07-11--- <2 --- --- ---6.6---104---13.9--- --- --- --- --- --- --- --- ---01-10-12--- <2 --- --- --- 3.7 ---54.7---7.3--- --- <2 --- --- --- <2 --- ---07-25-12--- <2 --- --- --- 4.5 ---126---13.7--- --- <0.5 --- --- --- <0.5 --- ---01-23-13--- <2 --- --- <27.4--- 4.521.9 16.6<2 --- <2 --- --- --- <2 --- ---08-01-13--- BDL --- BDL --- BDL BDL15.4BDL BDL BDL --- BDL --- --- BDL BDL --- ---02-05-14--- NS --- BDL --- BDL NS37.9 11.3 7.6BDL --- NS--- ---NS NS --- ---03-04-15 ---BDL---BDL --- 3.6 BDL 4.430 14BDL --- BDL--- ---BDL BDL--- ---07-18-16 --- --- --- --- ---3.3--- 197 35.9 16.4 --- --- --- --- 97.9 --- --- --- ---03-01-17 --- --- --- --- --- 24.5---94.5 76.1 6.5--- --- --- ---194--- --- --- ---02-09-22ND ND---ND ND ND BDL192ND 3.6 ND---ND ND131ND --- --- ---Page 8 of 10
NCAC 15A:2L PARAMETER UNITS DATEStandard(GCL)MW-17MW-11MW-10MW-9MW-7 MW8BMW-12*MONITORING WELLSTABLE 5Historical Groundwater Analytical DataKim's Grocery Incident 12543MW-1*MW-2MW-3*MW-4 MW-5 MW-6MW-18*VE-1 SWAPEXMW-14APEXMW-15MW-1610-19-94NA --- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- Bromodichloro-ug/l 12-14-95BDL --- --- --- --- --- --- NA --- --- --- --- --- NA --- ------ --- --- 0.6methane05-02-96--- BDL BDL BDL --- --- --- NA --- --- --- --- --- NA --- ------ --- ---08-16-96--- --- --- --- NA NA NA NA --- --- --- --- --- NA --- ------ --- --- [phone]--- BDL --- BDL BDL BDL BDL NA NA BDL --- --- --- NA NA NA--- --- ---02-17-00--- --- --- --- --- --- --- NA --- ---1.3BDL23NA --- ------ --- ---9-28-00*NA BDL NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL--- --- ---10-03-01*NA BDL NA BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL BDL12-12-02--- BDL --- BDL BDL BDL --- BDL BDL BDL --- --- BDL --- BDL --- --- BDL ---04-29-03--- <1 --- <10 <1 <10 <1 <100 <1 <1 <1 --- <1 --- <10 <1 <1 <1 ---09-04-03--- <1 --- <10 <1 <10 --- <100 <1 <1 --- --- <1 --- <10 --- --- <1 ---11-17-03--- <1 --- <1 <1 <10 --- <100 <1 <1 --- --- <1 --- <1 --- --- <1 ---03-02-04--- <1 --- <1 <1 <1 --- <10 <1 <1 --- --- <1 --- <1 --- --- <1 ---05-25-04--- <.5 --- <.5 <.5 <.5 --- <5 <.5 <.5 --- --- <.5 --- <.5 --- --- <.5 ---08-13-04--- <1 --- <1 <1 <1 --- <50 <1 <1 --- --- <1 --- <1 --- --- <1 ---11-17-04--- <.5 --- <.5 <.5 <.5 --- <5 <.5 <.5 --- --- <.5 --- <.5 --- --- <.5 ---02-28-07--- <.5 --- <0.5 --- <0.5 <0.5 <5 <5 <0.5 <0.5 --- <0.5 --- --- --- --- <0.5 ---08-23-07--- <0.5 --- --- <0.5 --- --- <5 <0.5 <0.5 <0.5 --- --- --- --- --- <0.5 <0.5 ---02-19-08--- <0.5 --- <0.5 <0.5 <0.5 <0.5 <5 <0.5 <0.5 <0.5 --- <0.5 --- --- --- --- --- ---08-05-08--- --- --- --- --- <0.5 --- <5 <0.5 <0.5 --- --- <0.5 --- --- --- --- --- ---12-09-08--- <0.5 --- <0.5 --- <0.5 --- <0.5 <0.5 <0.5 --- --- <0.5 --- --- --- --- --- ---06-08-09--- <0.5 --- <0.5 <0.5 <0.5 <0.5 <5 --- <0.5 <0.5 --- <0.5 --- <0.5 --- <0.5 --- ---01-20-10--- --- --- --- --- <0.5 --- <5 --- <0.5 --- --- --- --- <0.5 --- --- --- ---07-07-10--- <0.5 --- --- --- <0.5 --- <5 --- <0.5 --- --- --- --- --- --- --- --- ---01-05-11--- <0.5 --- --- --- <0.5 --- <20 --- <0.5 --- --- --- --- --- --- --- --- ---07-07-11--- <0.5 --- --- --- <0.5 --- <20 --- <0.5 --- --- --- --- --- --- --- --- ---01-10-12--- <0.5 --- --- --- <0.5 --- <2.5 --- <0.5 --- --- <0.5 --- --- --- <0.5 --- ---07-25-12--- <0.5 --- --- --- <0.5 --- <2.5 --- <0.5 --- --- <0.5 --- --- --- <0.5 --- ---01-23-13--- <0.5 --- --- --- <0.5 --- <2.5 --- <0.5 --- --- <0.5 --- --- --- <0.5 --- ---08-01-13--- BDL --- BDL --- BDL BDL <2.5 BDL BDL BDL --- BDL --- --- BDL BDL --- ---02-05-14--- NS --- BDL --- BDL NS <2.5 BDL BDL BDL --- NS--- ---NS NS --- ---03-04-15 ---BDL---BDL --- BDL BDL BDL BDL BDL BDL --- BDL--- ---BDL BDL--- ---07-18-16 --- --- --- --- ---ND---ND ND ND--- --- --- ---ND--- --- --- ---03-01-17 --- --- --- --- ---ND --- ND ND ND --- --- --- --- ND --- --- --- ---02-09-22ND ND---ND ND ND BDL ND ND BDL ND---ND ND ND ND --- --- ---1,2,4-Trimethylbenzeneug/l 02-09-22ND ND---ND ND ND ND 7.1 ND 4.5 ND---ND ND 13.9 ND --- --- ---400(28,500)1,3,5-Trimethylbenzeneug/l 02-09-22ND ND---ND ND ND ND ND ND 0.54 ND---ND ND 5.3 ND --- --- ---400(24,100)Page 9 of 10
NCAC 15A:2L PARAMETER UNITS DATEStandard(GCL)MW-17MW-11MW-10MW-9MW-7 MW8BMW-12*MONITORING WELLSTABLE 5Historical Groundwater Analytical DataKim's Grocery Incident 12543MW-1*MW-2MW-3*MW-4 MW-5 MW-6MW-18*VE-1 SWAPEXMW-14APEXMW-15MW-1607-18-16--- --- --- --- --- 1.87 --- 1.55 2.19 2.17 --- --- --- --- 2.18 --- --- ------ Dissolved Oxygenmg/l 03-01-17 --- --- --- --- ---20.69 --- 21.17 15.59 19.03 --- --- --- --- 13.56 --- --- --- ---No Standard02-09-22--- 8.19 --- --- --- 3.22 6.9 16.31 --- 18 5.65 --- 4.11 --- --- --- --- --- ---07-18-16--- --- --- --- --- -27 --- -54 114 -49 --- --- --- --- -73 --- --- ------ ORPmV 03-01-17 --- --- --- --- ---80 --- -127 32 -93 --- --- --- --- 235 --- --- --- ---No Standard02-09-22--- 120 --- --- --- --- 54 -21 --- 46 67 --- 110 --- --- --- --- --- ---07-18-16--- --- --- --- ---6.09---6.19 6.13 6.18--- --- --- ---6.49--- --- ------ pH03-01-17 --- --- --- --- --- 8.72---12.61 10.85 12.67--- --- --- --- 6.94 --- --- --- ---6.5-8.502-09-22--- 7.06 --- --- ---5.97 5.62 6.42---5.96 5.92--- --- ---5.81--- --- --- ---ND / BDL: Not Detected NA: Not analyzed for this parameter. ** 2L Standard for Ethylbenzene changed in 2006. Samples prior to the current sampling will retain the former standard.GCL: Gross Contaminant Level. ---: Well not sampled this date.*Monitoring wells have been abandoned or paved overPage 10 of 10
NCAC 15A:2L
PARAMETER UNITS DATE APEX Apex Standard
MW-2 MW-4 MW-5 MW-6 MW-7 MW8B MW-9 MW-10 MW-11 MW-18 VE-1 SW MW-14 MW-15 (GCL)

BENZENE ug/l 03-01-17 --- --- ---27.1 ---259 0.94 2.4 --- --- --- ---1.5 ---1
11-16-17 ND ND ---4.7 ---844 0.76 1.7 --- --- ND ---1.6 ---
02-09-22 ND ND ND ND ND 1,300 ND 1.7 ND ---ND ---BDL ND
03-30-23 --- --- ---0.404 ---569 ND 2.69 ---ND --- --- --- ---
(5000)
TOLUENE ug/l 03-01-17 --- --- --- 40.5 --- 3.5 1.1 ND --- --- --- --- 2.4 ---600
11-16-17 ND ND --- 2 --- 14 0.64 ND --- --- ND --- 1.9 ---
02-09-22 ND ND ND ND ND 8.4 ND ND ND ---ND ---3ND
03-30-23 --- --- ---0.829 ---4.6 0.471 0.271 ---ND --- --- --- ---
(260,000)
ETHYLBENZENE ug/l 03-01-17 --- --- --- 111 --- 86.9 2.2 ND --- --- --- --- 14.5 ---600
11-16-17 ND ND --- 16.7 --- 198 1.8 0.59 --- --- ND --- ND ---
02-09-22 ND ND ND ND ND 226 ND 2.7 ND ---ND ---28.9 ND
03-30-23 --- --- ---2.9 ---124 0.946 2.66 ---ND --- --- --- ---
(84,500)
TOTAL XYLENES ug/l 03-01-17 --- --- --- 161.3 --- 141 3.4 1.3 --- --- --- --- 37.2 ---500
11-16-17 ND ND --- 13.3 --- 307.9 3.69 1.2 --- --- ND --- 4.3 ---
02-09-22 ND ND ND ND ND 58 ND 6.7 ND ---ND ---125 ND
03-30-23 --- --- ---5.31 ---107 4.65 6.01 ---ND --- --- --- ---
(85,500)
TOTAL BTEX ug/l 03-01-17 --- --- --- 339.9 --- 490.4 7.64 3.7 --- --- --- --- 55.6 ---NS
11-16-17 ND ND --- 30 --- 1363.9 6.89 3.49 --- --- ND --- 7.8 ---
02-09-22 ND ND ND ND ND 1,592 ND 11.1 ND ---ND ---156.9 ND
03-30-23 --- --- ---9.44 ---805 6.07 11.63 ---ND --- --- --- ---
MTBE ug/l 03-01-17 --- --- --- ND ---883 0.56 2.4 --- --- --- --- ND ---20
11-16-17 ND 4.2 --- ND ---991 ND 1.7 --- --- ND --- ND ---
02-09-22 ND ND ND ND 1.5 409 ND 1.7 0.97 ---ND ---ND 0.61
03-30-23 --- --- ---1.5 ---302 ND 1.43 ---ND --- --- --- ---
(20,000)
Isopropyl Ether ug/l 03-01-17 --- --- --- 0.54 --- 9.9 0.99 3.1 --- --- --- --- ND ---70
11-16-17 1.1 ND --- ND --- 16 ND 2.9 --- --- ND --- ND ---
02-09-22 ND ND ND ND BDL 12.5 ND 2.1 ND ---ND ---ND ND
03-30-23 --- --- ---ND ---8.03 ND 1.78 ---ND --- --- --- ---
(70,000)
Naphthalene ug/l 03-01-17 --- --- ---24.5 ---94.5 76.1 6.5 --- --- --- ---194 ---6
11-16-17 ND ND ---7.4 ---216 63.2 5.6 --- --- ND ---231 ---
02-09-22 ND ND ND ND BDL 192 ND 3.6 ND ---ND ---131 ND
03-30-23 --- --- ---0.778 ---145 55.6 7.66 ---ND --- --- --- ---
(6,000)
1,2,4-Trimethylbenzene ug/l 03-01-17 --- --- --- 16.1 --- 177 ND ND --- --- --- --- 3.7 ---400
11-16-17 ND ND --- 2.4 ---468 ND ND --- --- ND --- ND ---
02-09-22 ND ND ND ND ND 7.1 ND 4.5 ND ---ND ---13.9 ND
03-30-23 --- --- ---0.3 ---94 0.68 3.51 ---ND --- --- --- ---
(28,500)
1,3,5-Trimethylbenzene ug/l 03-01-17 --- --- --- 3 --- 5.3 ND ND --- --- --- --- 0.56 ---400
11-16-17 ND ND --- ND --- ND ND ND --- --- ND --- ND ---
02-09-22 ND ND ND ND ND ND ND 0.54 ND ---ND ---5.3 ND
03-30-23 --- --- ---ND ---7.62 0.338 0.358 ---ND --- --- --- ---
(25,000)
n-propylbenzene ug/l 03-01-17 --- --- --- 12.9 --- 15.4 17.6 5.5 --- --- --- ---139 ---70
11-16-17 ND ND --- 3.2 --- 50.9 18 3.4 --- --- ND ---127 ---
02-09-22 ND ND ND ND ND 91.9 ND 3.7 ND ---ND ---36.4 ND
03-30-23 --- --- ---0.344 ---37 20.3 6.64 ---ND --- --- --- ---
(30,000)
sec-Butylbenzene ug/l 03-01-17 --- --- --- 1.1 --- ND 0.6 ND --- --- --- --- 6.3 ---70
11-16-17 ND ND --- ND --- ND 1.5 ND --- --- ND --- 6.6 ---
02-09-22 ND ND ND ND ND ND ND BDL ND ---ND ---2.5 ND
03-30-23 --- --- ---0.308 ---2.43 0.973 0.259 ---ND --- --- --- ---
(8,500)
Isopropylbenzene ug/l 03-01-17 --- --- --- 7.3 --- 6.4 9.3 2.5 --- --- --- --- 63.3 ---70
11-16-17 ND ND --- 1.9 --- ND 10.9 2 --- --- ND --- 52.9 ---
02-09-22 ND ND ND ND ND 39.3 ND 2 ND ---ND ---22 ND
03-30-23 --- --- ---0.334 ---15.7 10.5 2.98 ---ND --- --- --- ---
(25,000)
ND / BDL: Not Detected NA: Not analyzed for this parameter. NS = No Standard
GCL: Gross Contaminant Level. ---: Well not sampled this date.
MONITORING WELLS
TABLE 6
Current Groundwater Analytical Data
Kim's Grocery Incident 12543

TABLES

APPENDIX B

Standard Field Procedures:  Revision 10.6                            Page 1 
Pyramid Environmental & Engineering, P.C.           Revision date 01‐06‐2020 
Standard Field Procedures
Pyramid Environmental & Engineering, P.C.
________________________________________________________________________

1.0 Equipment Decontamination

Equipment decontamination is essential to assure representative environmental samples 
are collected and to eliminate the potential for cross‐contamination between sample points. 
Pyramid strives to clean all field equipment prior to leaving the office; however, field 
decontamination is still required on most projects. The procedures for decontamination of 
water level probes, hand augers, sampling probes, trowels, and other field equipment are 
listed below. 

1.1 EPA Region IV Decontamination Procedures  
Drilling and soil sampling equipment is decontaminated prior to each use using a pressure 
washer or steam cleaner. Reusable sampling equipment (hand augers, sampling probes, 
trowels, split spoon samplers, water sampling equipment, etc.…) are decontaminated using 
the general procedure described below.  
 Wash with non‐phosphate detergent, water, & brush to remove particulate matter 
 Rinse with tap water 
 Rinse with 10 percent nitric acid solution (only if sampling for metals) 
 Rinse with de‐ionized water 
 Rinse with pesticide‐grade isopropyl alcohol 
 Rinse with de‐ionized water 
 Air‐dry as long as possible  
The level of decontamination used is appropriate to the analytical parameters selected and 
the material of the sampling device being used for sampling. For example, if metals analyses 
are required, then the 10 % nitric acid solution is used for decontamination of stainless‐steel 
equipment. Pyramid uses de‐ionized or distilled water for decontamination. Equipment that 
is not used immediately after decontamination is wrapped in aluminum foil prior to storage. 

2.0 Soil Borings & Sampling
2.1 Soil Borings  
Soil borings are used by Pyramid to investigate and characterize the subsurface at sites.      
Soil borings provide information concerning soil types and density, depth to refusal, depth 
to bedrock, organic vapors that may be present, and can be used to obtain samples for 
laboratory analysis.  
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Pyramid conducts borings in several different ways, using hand augers, direct‐push 
equipment (Geoprobe), sample probes, split‐spoon samplers (ASTM D 1586‐84), auger 
drilling, air drilling, and Vibro‐Core. The following procedures are used by Pyramid 
Environmental when performing soil borings:  
1. Soil boring locations are chosen, and the ULOCO utility locating service is called to 
mark all public utilities. Pyramid locates private utilities at many project sites using 
Pyramid locating equipment, or uses a private utility locating service. 

2. Down hole drilling equipment is cleaned prior to use and between borings using 
pressure washing or steam cleaning. Additional decontamination procedures in 
Section 1.1 are used for sampling tools such as split spoons or direct‐push points.  

3. Soil borings are advanced using direct‐push, drilling rigs, hand augers, or other 
appropriate means. Near‐surface soil samples may also be collected using stainless 
steel push probes, shovels, scoops, or other sampling devices.  

4. Soil samples are normally collected at a minimum of 5‐foot intervals. Each sample is 
divided into two parts. Soil samples for laboratory analyses are jarred from the initial 
sample volume. The remaining soil is stored in a sealed container for headspace 
analysis and geological description.  

5. After screening the soil with the field instruments, each soil sample is described by 
the field geologist and a geologic description is recorded in project documentation. 

6. Soils are typically described in the field by the project geologist or soil scientist and 
are classified according to the Unified Soil Classification System (ASTM D 2488‐84). 

7. Soil samples selected for laboratory analysis are placed in properly prepared, 
laboratory supplied containers and immediately packed in a cooler on ice. Sample 
custody is maintained using standard chain‐of‐custody (COC) procedures through 
delivery to the analytical laboratory. 

8. Soil borings, which are not completed as monitoring wells, are grouted using a 
Portland cement, bentonite, or backfilled with soil cuttings.  

9. Soil cuttings are generally spread near the soil boring or monitoring well location as 
directed by State regulatory managers.  Drill cuttings are drummed (containerized) 
where site conditions or regulatory requirements prohibit spreading cuttings, and 
are disposed off‐site (after waste determination is made).  

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2.2 Soil Headspace Screening  
Soil samples are routinely screened for volatile organic compounds (VOCs) which may be an 
indication of organic or petroleum hydrocarbon contamination. The typical screening 
procedure includes immediately transferring the soil from the sampling devices to a sealed 
container (sealed 1‐gallon Ziplock plastic bag). The soil container is filled approximately 
halfway with soil and sealed. This creates headspace above the soil in which VOCs may 
accumulate. The container is allowed to stand for 5 to 15 minutes for the VOCs to equilibrate 
in the headspace of the container. The headspace of the container is then screened using a 
calibrated organic vapor analyzer (PID or FID). The screening is conducted by cracking the 
seal only enough to allow insertion of the probe into the headspace so as not to dilute the 
sample. In most cases where the contaminant of concern includes volatile organics, the 
highest or “Peak“ field‐screening result is documented for each sample. The soil samples 
showing the highest reading from each boring are typically selected for laboratory analysis. 

2.3 Soil Sample Collection for Laboratory Analysis   
After the targeted depth has been reached, soil samples are collected using a variety of 
sampling devices. Soil sample devices used include split‐spoons, stainless‐steel hand augers, 
stainless‐steel push‐probes and sampling scoops, and directly from the center of the 
excavator bucket. The sample technician uses disposable nitrile gloves, which are changed 
between samples to avoid cross‐contamination of samples, and each sampling device is 
decontaminated prior to use.  

Only laboratory provided containers are used for sample collection. Samples are collected 
in accordance with the preservation methods required by the requested analytical method. 
Samples are handled as little as possible and preserved in the field as specified for the 
analytical method. The samples are stored and transported to the laboratory in an insulated 
cooler chilled to approximately 4 degrees centigrade. The samples are labeled with a 
minimum of the following information: Pyramid, project name or number, sample 
identification, date collected, sampler name, and analysis requested. Sample custody is 
maintained using standard chain‐of‐custody procedures through delivery to the analytical 
laboratory. Notes of the sampling events are recorded in project documentation. 
Incremental sampling methodology (ISM) is a structured composite sampling and 
processing protocol that reduces data variability and provides a reasonably unbiased 
estimate of mean contaminant concentrations in a volume of soil targeted for sampling. 
ISM provides representative samples of specific soil volumes defined as decision units 
(DUs) by collecting numerous increments of soil (typically 30–100 increments) that are 
combined, processed, and subsampled according to specific protocols. ISM Sampling will 
be further explained in a site‐specific Work Plan documents. 
Pyramid will contract an on‐site laboratory for immediate analyses as needed.  
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2.4 Sediment Sample Collection for Laboratory Analysis   
Near surface sediment may be present in a surface water ditch, stream, or dry intermittent 
stream bed. Sediment samples are typically soil related samples and may be collected with 
a variety of sampling tools. Pyramid will use stainless‐steel samplers which have been 
decontaminated according to the procedure detailed in section 1.1 of this document. After 
the sediment samples are collected, the location, depth, conditions, and sample 
composition are documented in the project records. The samples will be screened in the 
field to detect volatile organic vapors and visually examined for contamination. Sediment 
samples will be preserved in laboratory prepared containers in accordance with sample 
preservation recommendation of the analytical laboratory. Samples are handled as little as 
possible and preserved in the field as specified for the analytical method. The samples are 
stored and transported in an insulated cooler chilled to approximately 4 degrees centigrade. 
The samples are labeled with a minimum of the following information: Pyramid, project 
name or number, sample identification, date collected, sampler name, and analysis 
requested. Sample custody is maintained using standard chain‐of‐custody procedures 
through delivery to the analytical laboratory. Documentation of the sampling events are 
recorded in the project documentation. 

3.0 Direct-Push Sampling Procedures

Direct‐push sampling techniques have been used at many sites to collect soil and 
groundwater samples rapidly and inexpensively.  Track‐mounted, direct‐push rigs can access 
hard to reach areas and allow borings and monitoring wells to be installed.  For soil sampling, 
typically, the direct‐push steel drive tube is decontaminated using a pressure washer, and a 
new plastic sample liner is inserted in the steel drive tube to collect soil samples. The soil 
samples are collected in new polyethylene sample tubes within the steel drive tube. The soil 
samples are then extracted from the polyethylene liner and preserved as required for 
laboratory analysis. 

For groundwater sampling, a steel probe with a retractable screen section and tubing are 
driven to depth and the screened section is opened to allow groundwater to enter the 
tubing. The water samples are withdrawn using new polyethylene and Teflon® tubing with 
either a decontaminated stainless‐steel check ball, or peristaltic pump. The groundwater 
sample is placed directly into the appropriate laboratory containers and sealed immediately. 
To prevent cross‐contamination of samples, new disposable tubing is used for each 
groundwater sample point. Disposable nitrile gloves are worn by field personnel during 
development and groundwater sampling, and gloves are changed between samples. 
Groundwater sampling procedures are detailed more in Section 5.0, as appropriate for each 
analytical method. 

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4.0 Monitoring Well Installation

Groundwater monitoring wells are installed in many subsurface environments; Coastal 
Plain, sedimentary, Piedmont saprolite, weathered rock formations, and mountain terrains 
to list a few. Formations encountered include unconsolidated and consolidated sediments, 
fill material, organic soils, saprolitic soils, weathered rock formations, and bedrock. 
Groundwater monitoring wells provide a stable sampling point at discrete intervals within 
the confined or unconfined aquifers. Monitoring wells are installed for a number of reasons, 
and are typically installed as 1‐inch, 2‐inch, 4‐inch, or 6‐inch diameter wells. Construction 
may be of PVC, stainless‐steel, HDPE, or other appropriate materials. The following 
procedures are used by Pyramid when performing borings and monitoring well installations.   If required, monitoring well permits are obtained from the State, County, or City. 
 Boring and monitoring well locations are chosen, and utilities are marked by the 
public utility locating company. As needed, the locations may be scanned for utilities 
by Pyramid using our locating equipment, or a private utility locating company. 
 In selecting a drill site, care is taken to avoid overhead power lines, and subsurface 
utilities whenever possible. 
 Down‐hole drilling equipment is decontaminated prior to use and between borings. 
 Borings are advanced using direct‐push, drilling rigs, hand augers, solid‐stem augers, 
hollow‐stem augers, air rotary drilling, or air hammer drilling. 
 Soil samples are normally collected at a minimum of 5‐foot intervals. Each sample is 
divided into two parts.  Soil samples for laboratory analyses are jarred from the initial 
sample volume. The remaining soil is stored in a sealed container for headspace 
analysis with an organic vapor analyzer (PID or FID).  
 After screening the soil with the field instruments, each soil sample is described by 
the field geologist and a geologic description is recorded in the project 
documentation. 

Type II monitoring wells are usually installed using 2‐inch diameter schedule 40 PVC riser 
and 2‐inch, 0.010‐inch machine slotted well screen. The screened interval length varies with 
the geologic site conditions, expected variations in water level, and the investigation goals 
for the well. The well construction details are presented on the boring log. 

Type III wells are usually installed as double‐cased wells to monitor the deeper portions of 
the aquifer. The first casing is usually a 5 to 6‐inch diameter solid PVC well casing drilled to 
bedrock or an appropriate depth within the surficial zone. The 5 to 6‐inch diameter casing 
is then set and grouted in the borehole. After the cement grout has set for 12 to 24‐hours, 
the borehole is completed to the desired depth using air rotary drilling or air hammer 
drilling. The inside casing of the Type III monitoring well is usually constructed of 2‐inch 
diameter SCH 40 PVC casing and 2‐inch diameter SCH 40 PVC 0.010‐inch slotted well screen. 

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In most applications, a sand filter pack of #2 well sand (or appropriately sized well sand).  
Sand is typically installed to a level of 2 feet above the top of the screen in each well.                   
A minimum 2‐foot thick bentonite seal is usually placed on top of the filter pack and 
hydrated with de‐ionized or distilled water. The remaining annular space of a typical well is 
backfilled to grade with a Portland cement/bentonite grout. In monitoring wells where the 
water table is close to surface, the amount of sand above the screen and bentonite will be 
reduced to allow for a minimum of 2–3 feet of cement grout in the well bore. 

At the surface, each well is secured with a locking cap and a steel well protector. Depending 
on the surface conditions, the well may be protected by a flush‐mounted manhole set in the 
surrounding surface in a concrete pad.  In some cases, stick‐up well protectors are used to 
secure the well and allow the well to be more easily located in wooded or open areas. 

Each groundwater monitoring well is developed by surging, pumping, or bailing to remove 
sediment before sampling. Water removed during development is managed according to 
individual State regulatory guidance. 

5.0 Water Sampling Procedures

Pyramid relies on water sampling as a primary method for assessment of subsurface 
groundwater conditions. Water sampling typically includes sampling groundwater from 
monitoring wells, water supply wells, surface water bodies, stormwater,  waste sumps, etc.   
The following provides typical sampling procedures for the water samples. 

5.1 Monitoring Wells  
Prior to sampling each monitoring well, depth to liquid and/or liquids and total well depth 
are measured using a properly decontaminated electric interface probe. If phase‐separated 
petroleum product is detected in a well, the product measurements are recorded along with 
the water level in each well.  This information is recorded in the field record and the volume 
of the water in the well casing is calculated. To purge stagnant water from each monitoring 
well, three to five well casing volumes of water are removed from each well prior to 
sampling. Alternately, for low‐flow sampling, development continues until the field 
parameters (pH, conductivity, dissolved oxygen, ORP, and temperature) have stabilized.   
If the water in the monitoring well is removed until the well is dry, then the well is sampled 
thereafter. Water removed from wells during purging is managed in accordance with 
individual State regulatory guidance.  

Groundwater samples are typically collected using a new disposable polyethylene bailer and 
a new length of nylon cord. To prevent cross‐contamination of samples between wells, a 
new disposable bailer is used for each well.  The bailer is lowered into the groundwater 
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slowly and removed slowly.  A new pair of disposable gloves is worn by field personnel 
during purging and sampling, and is changed between wells.  In the case of small diameter 
monitoring wells or direct‐push water samples, water samples may be collected using a 
peristaltic pump and new polyethylene tubing.  Another method is to use a segment of new 
sampling tubing and a stainless‐steel check ball to create a “Tube Bailer”.  
Groundwater samples selected for laboratory analysis are immediately placed in properly 
prepared, laboratory supplied containers and preserved in a cooler on ice. Samples are 
maintained under standard chain‐of‐custody procedures from sample collection through 
laboratory analysis. 

5.2 Water Supply Well Sampling  
Prior to sampling each water supply well, the well owner is contacted to provide access to 
the well. The well owner is interviewed to locate the faucet closest to the well for sampling.    
If there are no faucets located on the well, then water from an outside faucet at the building  
is usually sampled. If there are no outside faucets available, then the water samples are 
collected from an inside faucet. The location of the sample is recorded in the field record.  
The owner is interviewed to see if there is a chlorination system on the well, or if the well 
has been recently chlorinated. Recent chlorination could affect the laboratory detection 
limits. In most cases, the samples are preserved using sodium thiosulfate or ascorbic acid to 
remove the interactions of chlorine, which may be present in the samples.   
If the well is treated with a Point‐of‐Entry (POE) treatment system, then the “raw” water 
sample must be collected before the treatment system. An associated treated water sample 
is usually collected as well to demonstrate effective treatment.    
To purge stagnant water from the water supply well system, the faucet is allowed to run on 
full stream for a minimum of 15 minutes. The aerator is removed from the tap if one is 
present. Water removed from wells during purging is managed according to regulatory 
standards.  
Water supply well samples are collected using appropriate laboratory prepared containers 
for each analysis.  The analytical methods selected will vary with the contaminant of 
interest. To prevent cross‐contamination of samples between wells, disposable nitrile gloves 
are worn by field personnel during purging and sampling and are changed between wells. It 
is possible that samples may be required at several places within the water supply system. 
The samples are collected accordingly and labeled to show the source and location sampled.  
Supply well samples selected for laboratory analysis are immediately placed in properly 
prepared, laboratory supplied containers and packed in a cooler on ice, and chilled to 
approximately 4 degrees Celsius.  Samples are maintained under standard chain‐of‐custody 
procedures from sample collection through laboratory analysis. 

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5.3 Surface Water Sampling  
Surface water samples are obtained using several techniques including use of sample 
bailers, discrete depth interval samples, sample scoops, from boats, bridges, or wading into 
a stream. Caution should always be used when sampling surface water to ensure that the 
water collected is representative of the site conditions. Since stream or open water sampling 
is transient, careful documentation of the site conditions, weather, surface conditions, 
sediment, algal or biological material, etc. is required.  

In many studies, additional samples from upstream and downstream of the desired sample 
point are required. Surface water sampling must be planned to reflect the site‐specific 
conditions during sampling. The general procedures are similar to the supply well sampling 
procedures detailed above. Appropriate laboratory prepared containers are used for each 
analysis. The analytical methods selected will vary with the contaminant of interest. 

To prevent cross‐contamination of samples between samples, disposable nitrile gloves are 
worn by field personnel during purging and sampling and are changed between samples. It 
is possible that samples may be required at several places along the stream to check for 
influences of up‐stream facilities.  Samples will be collected accordingly and labeled to show 
the source and location sampled. Sample will always be collected upstream of the area 
disturbed by the person sampling the stream. Surface water samples selected for laboratory 
analysis are placed in properly prepared, laboratory supplied containers and immediately 
packed in a cooler on ice. Samples are maintained under strict control using standard chain‐
of‐custody procedures through laboratory analysis.  

6.0 Quality Assurance / Quality Control

The field and laboratory procedures listed above have been implemented on many sites 
with excellent results. The procedures are often verified by an appropriate use of the 
following environmental samples. 

Trip Blanks ( or Travel blanks) 
The Trip Blank (or travel blanks) are often used to verify that the environmental samples are 
not impacted during shipping, and verify that the source of the glassware is not the source 
of contamination. The trip blanks are preserved de‐ionized water, collected in the 
laboratory, and shipped with the sample containers to Pyramid or the site. The trip blank 
remains in the sample cooler and is shipped back to the laboratory with the environmental 
samples. The trip blank is most commonly analyzed for volatile organic compounds (VOCs), 
and correspond to the target analyses. 

Standard Field Procedures:  Revision 10.6                            Page 9 
Pyramid Environmental & Engineering, P.C.           Revision date 01‐06‐2020 
Field Blanks  
Field Blanks are quality assurance samples which are collected in the field to represent the 
conditions present at the time the samples are collected. For water samples, the laboratory 
containers are opened and filled in the field using de‐ionized (or distilled) water from a 
known source.  The samples reflect any site conditions such as vapor sources which may 
affect the water samples.  The samples then travel to the laboratory with the other samples 
for analysis. Comparison of the field blank results with the sample results may indicate a 
pervasive site constituent detected in the samples.  

Equipment Blanks  
Equipment Blanks are used to verify whether the decontamination procedures used for the 
sample equipment (or the new equipment) may have added any contaminants to the 
sample during collection. If a non‐disposable sampling device is used (such as a sampling 
treir, scoop, hand auger, Teflon bailer, etc.…), then the decontamination of the sampling 
device is usually verified using an equipment blank. The equipment blank is collected using 
de‐ionized (or distilled) water from a known source. The equipment is decontaminated,  
allowed to air dry, the water is poured over (or through) the equipment, and a sample is 
collected in the appropriate sample containers. The equipment blank samples are preserved 
with the other environmental samples, and shipped for analyses for the target parameters. 

Duplicate Samples 
Duplicate Samples are used to verify the sampling procedures and evaluate laboratory 
analysis variability. The duplicate samples may be collected from soil, sediment, air, surface 
water, wastes, or groundwater. These samples are collected and sent to the laboratory as  
blind samples to have maximum effectiveness. Duplicate samples are generally analyzed for 
the same analytical methods as the actual environmental sample for direct comparison. 
Duplicate samples may also be split between two different laboratories to provide 
verification of laboratory detection limits or quality process verification. 

Background Samples 
Background Samples are a tool for comparison of general site conditions with source area 
site conditions. Background samples may be soil, sediment, air, surface water, waste, or 
groundwater. The goal is to reflect conditions outside the expected area of contamination. 
These samples are collected outside the expected area of contamination and sent to the 
laboratory for analyses. Background samples are generally analyzed for the same analytical 
methods as the source area environmental samples for direct comparison. Background 
samples for metals comparison are common types of background samples used in 
environmental investigations.  

APPENDIX C

Laboratory's liability in any claim relating to analyses performed shall be limited to, at laboratory's option, repeating the
analysis in question at laboratory's expense, or the refund of the charges paid for performance of said analysis.

4/12/2023
Pyramid Environmental & Engineering, P.C. Wyatt Copeland
PO Box 16265 Greensboro, NC, 27416-0265
Ref: Analytical Testing
Lab Report Number: 23-090-0011 Client Project Description: Kim's Grocery
Dear Wyatt Copeland:
Waypoint Analytical, LLC (Charlotte) received sample(s) on 3/31/2023 for the analyses presented in the
following report.
The above referenced project has been analyzed per your instructions. The analyses were performed in accordance with the applicable analytical method.
The analytical data has been validated using standard quality control measures performed as required by the
analytical method. Quality Assurance, method validations, instrumentation maintenance and calibration for all parameters were performed in accordance with guidelines established by the USEPA (including 40 CFR 136
Method Update Rule May 2021) unless otherwise indicated. Certain parameters (chlorine, pH, dissolved oxygen, sulfite...) are required to be analyzed within 15 minutes of sampling. Usually, but not always, any field parameter analyzed at the laboratory is outside of this holding time.
Refer to sample analysis time for confirmation of holding time compliance.
The results are shown on the attached Report of Analysis(s). Results for solid matrices are reported on an as-received basis unless otherwise indicated. This report shall not be reproduced except in full and relates only to
the samples included in this report. Please do not hesitate to contact me or client services if you have any questions or need additional information. Sincerely,
Angela D Overcash Senior Project Manager
Page 1 of 33
Certification Summary
Laboratory ID: WP CNC: Waypoint Analytical Carolina, Inc. (C), Charlotte, NC
State Program Lab ID Expiration Date
07/31/202337735State ProgramNorth Carolina
12/31/2023402State ProgramNorth Carolina
07/31/202399012State ProgramSouth Carolina
12/31/202299012State ProgramSouth Carolina
Page 1 of 1 00016/23-090-0011
Page 2 of 33
Report Number:
Sample Summary Table
Client Project Description:
23-090-0011
Kim's Grocery
Lab No Client Sample ID Matrix Date Collected Date Received
03/30/2023 15:00Aqueous 92687 MW-6 03/31/2023 12:42
03/30/2023 15:50Aqueous 92688 MW-8B 03/31/2023 12:42
03/30/2023 15:20Aqueous 92689 MW-9 03/31/2023 12:42
03/30/2023 15:10Aqueous 92690 MW-10 03/31/2023 12:42
03/30/2023 15:40Aqueous 92691 MW-18 03/31/2023 12:42
Page 3 of 33
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-090-0011
Report Limit
Project:Kim's Grocery
V 92687MW-6
J4.45 04/12/2023 03:496200BAcetoneµg/L 1.80
J0.404 04/12/2023 03:496200BBenzeneµg/L 0.180
J0.308 04/12/2023 03:496200Bsec-Butyl benzene µg/L 0.200
2.90 04/12/2023 03:496200BEthylbenzeneµg/L 0.170
J0.334 04/12/2023 03:496200BIsopropylbenzeneµg/L 0.180
J1.50 04/12/2023 03:496200BMethyl Ethyl Ketone (MEK)µg/L 0.710
J0.778 04/12/2023 03:496200BNaphthaleneµg/L 0.470
J0.344 04/12/2023 03:496200Bn-Propylbenzene µg/L 0.190
0.829 04/12/2023 03:496200BTolueneµg/L 0.220
J0.300 04/12/2023 03:496200B1,2,4-Trimethylbenzene µg/L 0.190
J0.305 04/12/2023 03:496200Bo-Xylene µg/L 0.210
5.00 04/12/2023 03:496200Bm,p-Xylene µg/L 0.420
J5.31 04/12/2023 03:496200BXylene (Total)µg/L 0.210
V 92688MW-8B
569 04/12/2023 07:296200BBenzeneµg/L 1.80
J3.80 04/12/2023 07:296200Bn-Butylbenzene µg/L 1.80
J2.43 04/12/2023 07:296200Bsec-Butyl benzene µg/L 2.00
8.03 04/12/2023 07:296200BDi-Isopropyl Ether (DIPE)µg/L 5.00
124 04/12/2023 07:296200BEthylbenzeneµg/L 1.70
15.7 04/12/2023 07:296200BIsopropylbenzeneµg/L 1.80
302 04/12/2023 07:296200BMethyl tert-butyl ether (MTBE)µg/L 1.40
145 04/12/2023 07:296200BNaphthaleneµg/L 4.70
37.3 04/12/2023 07:296200Bn-Propylbenzene µg/L 1.90
J4.61 04/12/2023 07:296200BTolueneµg/L 2.20
93.7 04/12/2023 07:296200B1,2,4-Trimethylbenzene µg/L 1.90
7.62 04/12/2023 07:296200B1,3,5-Trimethylbenzene µg/L 1.80
J2.31 04/12/2023 07:296200Bo-Xylene µg/L 2.10
105 04/12/2023 07:296200Bm,p-Xylene µg/L 4.20
J10704/12/2023 07:296200BXylene (Total)µg/L 2.10
V 92689MW-9
J8.86 04/12/2023 06:156200BAcetoneµg/L 1.80
1.23 04/12/2023 06:156200Bn-Butylbenzene µg/L 0.180
0.973 04/12/2023 06:156200Bsec-Butyl benzene µg/L 0.200
0.946 04/12/2023 06:156200BEthylbenzeneµg/L 0.170
10.5 04/12/2023 06:156200BIsopropylbenzeneµg/L 0.180
55.6 04/12/2023 06:156200BNaphthaleneµg/L 0.470
Page 4 of 33
Summary of Detected Analytes
QualifiersAnalyzedUnitsResult
Report Number:
Client Sample ID
Method Parameters
Lab Sample ID
23-090-0011
Report Limit
Project:Kim's Grocery
V 92689MW-9
20.3 04/12/2023 06:156200Bn-Propylbenzene µg/L 0.190
J0.471 04/12/2023 06:156200BTolueneµg/L 0.220
0.680 04/12/2023 06:156200B1,2,4-Trimethylbenzene µg/L 0.190
J0.338 04/12/2023 06:156200B1,3,5-Trimethylbenzene µg/L 0.180
1.04 04/12/2023 06:156200Bo-Xylene µg/L 0.210
3.61 04/12/2023 06:156200Bm,p-Xylene µg/L 0.420
4.65 04/12/2023 06:156200BXylene (Total)µg/L 0.210
V 92690MW-10
J3.46 04/12/2023 04:136200BAcetoneµg/L 1.80
2.69 04/12/2023 04:136200BBenzeneµg/L 0.180
J0.268 04/12/2023 04:136200Bn-Butylbenzene µg/L 0.180
J0.259 04/12/2023 04:136200Bsec-Butyl benzene µg/L 0.200
1.78 04/12/2023 04:136200BDi-Isopropyl Ether (DIPE)µg/L 0.500
2.66 04/12/2023 04:136200BEthylbenzeneµg/L 0.170
2.98 04/12/2023 04:136200BIsopropylbenzeneµg/L 0.180
1.43 04/12/2023 04:136200BMethyl tert-butyl ether (MTBE)µg/L 0.140
7.66 04/12/2023 04:136200BNaphthaleneµg/L 0.470
6.64 04/12/2023 04:136200Bn-Propylbenzene µg/L 0.190
J0.271 04/12/2023 04:136200BTolueneµg/L 0.220
3.51 04/12/2023 04:136200B1,2,4-Trimethylbenzene µg/L 0.190
J0.358 04/12/2023 04:136200B1,3,5-Trimethylbenzene µg/L 0.180
J0.272 04/12/2023 04:136200Bo-Xylene µg/L 0.210
5.74 04/12/2023 04:136200Bm,p-Xylene µg/L 0.420
J6.01 04/12/2023 04:136200BXylene (Total)µg/L 0.210
Page 5 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-6
92687 Matrix:
3/30/2023 15:00
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
4.45 J µg/L 1.80 10.0Acetone 1 04/12/23 03:49 V31920TBL
0.404 J µg/L 0.180 0.500Benzene 1 04/12/23 03:49 V31920TBL
<0.210 µg/L 0.210 0.500Bromobenzene 1 04/12/23 03:49 V31920TBL
<0.420 µg/L 0.420 1.00Bromochloromethane 1 04/12/23 03:49 V31920TBL
<0.160 µg/L 0.160 0.500Bromodichloromethane 1 04/12/23 03:49 V31920TBL
<1.50 µg/L 1.50 5.00Bromoform 1 04/12/23 03:49 V31920TBL
<0.280 µg/L 0.280 1.00Bromomethane 1 04/12/23 03:49 V31920TBL
<0.180 µg/L 0.180 0.500n-Butylbenzene 1 04/12/23 03:49 V31920TBL
0.308 J
µg/L 0.200 0.500
sec-Butyl benzene 1 04/12/23 03:49 V31920TBL
<0.920 µg/L 0.920 2.00tert-Butyl benzene 1 04/12/23 03:49 V31920TBL
<0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 04/12/23 03:49 V31920TBL
<0.190 µg/L 0.190 0.500Chlorobenzene 1 04/12/23 03:49 V31920TBL
<0.190 µg/L 0.190 0.500Chlorodibromomethane 1 04/12/23 03:49 V31920TBL
<0.430 µg/L 0.430 1.00Chloroethane 1 04/12/23 03:49 V31920TBL
<0.220 µg/L 0.220 0.500Chloroform 1 04/12/23 03:49 V31920TBL
<0.220 µg/L 0.220 0.500
Chloromethane 1 04/12/23 03:49 V31920TBL
<0.200 µg/L 0.200 0.5002-Chlorotoluene 1 04/12/23 03:49 V31920TBL
<0.200 µg/L 0.200 0.5004-Chlorotoluene 1 04/12/23 03:49 V31920TBL
<0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 04/12/23 03:49 V31920TBL
<1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 04/12/23 03:49 V31920TBL
<0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 04/12/23 03:49 V31920TBL
<0.230 µg/L 0.230 0.500Dibromomethane 1 04/12/23 03:49 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 6 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-6
92687 Matrix:
3/30/2023 15:00
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
<0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 04/12/23 03:49 V31920TBL
<0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 04/12/23 03:49 V31920TBL
<0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 04/12/23 03:49 V31920TBL
<1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 04/12/23 03:49 V31920TBL
<0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 04/12/23 03:49 V31920TBL
<0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 04/12/23 03:49 V31920TBL
<0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 04/12/23 03:49 V31920TBL
<0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 04/12/23 03:49 V31920TBL
<0.180 µg/L 0.180 0.500
trans-1,2-Dichloroethene 1 04/12/23 03:49 V31920TBL
<0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 04/12/23 03:49 V31920TBL
<0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 04/12/23 03:49 V31920TBL
<0.210 µg/L 0.210 2.002,2-Dichloropropane 1 04/12/23 03:49 V31920TBL
<0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 04/12/23 03:49 V31920TBL
<0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 04/12/23 03:49 V31920TBL
<0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 04/12/23 03:49 V31920TBL
<42.0 µg/L 42.0 200
Ethanol 1 04/12/23 03:49 V31920TBL
2.90 µg/L 0.170 0.500Ethylbenzene 1 04/12/23 03:49 V31920TBL
<0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 04/12/23 03:49 V31920TBL
<0.380 µg/L 0.380 1.002-Hexanone 1 04/12/23 03:49 V31920TBL
0.334 J µg/L 0.180 0.500Isopropylbenzene 1 04/12/23 03:49 V31920TBL
<0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 04/12/23 03:49 V31920TBL
1.50 J µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 04/12/23 03:49 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 7 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-6
92687 Matrix:
3/30/2023 15:00
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
<0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 04/12/23 03:49 V31920TBL
<0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 04/12/23 03:49 V31920TBL
<0.330 µg/L 0.330 2.00Methylene Chloride 1 04/12/23 03:49 V31920TBL
0.778 J µg/L 0.470 1.00Naphthalene 1 04/12/23 03:49 V31920TBL
0.344 J µg/L 0.190 0.500n-Propylbenzene 1 04/12/23 03:49 V31920TBL
<0.220 µg/L 0.220 0.500Styrene 1 04/12/23 03:49 V31920TBL
<0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 04/12/23 03:49 V31920TBL
<0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 04/12/23 03:49 V31920TBL
<0.220 µg/L 0.220 0.500
Tetrachloroethene 1 04/12/23 03:49 V31920TBL
0.829 µg/L 0.220 0.500Toluene 1 04/12/23 03:49 V31920TBL
<0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 04/12/23 03:49 V31920TBL
<0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 04/12/23 03:49 V31920TBL
<0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 04/12/23 03:49 V31920TBL
<0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 04/12/23 03:49 V31920TBL
<0.180 µg/L 0.180 0.500Trichloroethene 1 04/12/23 03:49 V31920TBL
<0.180 µg/L 0.180 0.500
Trichlorofluoromethane 1 04/12/23 03:49 V31920TBL
<0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 04/12/23 03:49 V31920TBL
0.300 J µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 04/12/23 03:49 V31920TBL
<0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 04/12/23 03:49 V31920TBL
<1.00 µg/L 1.00 5.00Vinyl Acetate 1 04/12/23 03:49 V31920TBL
<0.170 µg/L 0.170 0.500Vinyl Chloride 1 04/12/23 03:49 V31920TBL
0.305 J µg/L 0.210 0.500o-Xylene 1 04/12/23 03:49 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 8 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-6
92687 Matrix:
3/30/2023 15:00
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
5.00 µg/L 0.420 1.00m,p-Xylene 1 04/12/23 03:49 V31920TBL
5.31 J µg/L 0.210 0.500Xylene (Total)1 04/12/23 03:49 V31920
Surrogate: 4-Bromofluorobenzene 105 Limits: 70-130%04/12/23 03:491 TBL V31920
Surrogate: Dibromofluoromethane 98.4 Limits: 70-130%04/12/23 03:491 TBL V31920
Surrogate: 1,2-Dichloroethane - d4 95.8 Limits: 70-130%04/12/23 03:491 TBL V31920
Surrogate: Toluene-d8 102 Limits: 70-130%04/12/23 03:491 TBL V31920
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 9 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-8B
92688 Matrix:
3/30/2023 15:50
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
<18.0 µg/L 18.0 100Acetone 10 04/12/23 07:29 V31920TBL
569 µg/L 1.80 5.00Benzene 10 04/12/23 07:29 V31920TBL
<2.10 µg/L 2.10 5.00Bromobenzene 10 04/12/23 07:29 V31920TBL
<4.20 µg/L 4.20 10.0Bromochloromethane 10 04/12/23 07:29 V31920TBL
<1.60 µg/L 1.60 5.00Bromodichloromethane 10 04/12/23 07:29 V31920TBL
<15.0 µg/L 15.0 50.0Bromoform 10 04/12/23 07:29 V31920TBL
<2.80 µg/L 2.80 10.0Bromomethane 10 04/12/23 07:29 V31920TBL
3.80 J µg/L 1.80 5.00n-Butylbenzene 10 04/12/23 07:29 V31920TBL
2.43 J
µg/L 2.00 5.00
sec-Butyl benzene 10 04/12/23 07:29 V31920TBL
<9.20 µg/L 9.20 20.0tert-Butyl benzene 10 04/12/23 07:29 V31920TBL
<1.80 µg/L 1.80 5.00Carbon Tetrachloride 10 04/12/23 07:29 V31920TBL
<1.90 µg/L 1.90 5.00Chlorobenzene 10 04/12/23 07:29 V31920TBL
<1.90 µg/L 1.90 5.00Chlorodibromomethane 10 04/12/23 07:29 V31920TBL
<4.30 µg/L 4.30 10.0Chloroethane 10 04/12/23 07:29 V31920TBL
<2.20 µg/L 2.20 5.00Chloroform 10 04/12/23 07:29 V31920TBL
<2.20 µg/L 2.20 5.00
Chloromethane 10 04/12/23 07:29 V31920TBL
<2.00 µg/L 2.00 5.002-Chlorotoluene 10 04/12/23 07:29 V31920TBL
<2.00 µg/L 2.00 5.004-Chlorotoluene 10 04/12/23 07:29 V31920TBL
8.03 µg/L 5.00 5.00Di-Isopropyl Ether (DIPE)10 04/12/23 07:29 V31920TBL
<11.0 µg/L 11.0 20.01,2-Dibromo-3-Chloropropane 10 04/12/23 07:29 V31920TBL
<2.00 µg/L 2.00 5.001,2-Dibromoethane 10 04/12/23 07:29 V31920TBL
<2.30 µg/L 2.30 5.00Dibromomethane 10 04/12/23 07:29 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 10 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-8B
92688 Matrix:
3/30/2023 15:50
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
<2.20 µg/L 2.20 5.001,2-Dichlorobenzene 10 04/12/23 07:29 V31920TBL
<1.90 µg/L 1.90 5.001,3-Dichlorobenzene 10 04/12/23 07:29 V31920TBL
<2.10 µg/L 2.10 5.001,4-Dichlorobenzene 10 04/12/23 07:29 V31920TBL
<12.0 µg/L 12.0 50.0Dichlorodifluoromethane 10 04/12/23 07:29 V31920TBL
<2.40 µg/L 2.40 5.001,1-Dichloroethane 10 04/12/23 07:29 V31920TBL
<1.50 µg/L 1.50 5.001,2-Dichloroethane 10 04/12/23 07:29 V31920TBL
<1.50 µg/L 1.50 5.001,1-Dichloroethene 10 04/12/23 07:29 V31920TBL
<2.00 µg/L 2.00 5.00cis-1,2-Dichloroethene 10 04/12/23 07:29 V31920TBL
<1.80 µg/L 1.80 5.00
trans-1,2-Dichloroethene 10 04/12/23 07:29 V31920TBL
<1.90 µg/L 1.90 5.001,2-Dichloropropane 10 04/12/23 07:29 V31920TBL
<1.30 µg/L 1.30 5.001,3-Dichloropropane 10 04/12/23 07:29 V31920TBL
<2.10 µg/L 2.10 20.02,2-Dichloropropane 10 04/12/23 07:29 V31920TBL
<2.00 µg/L 2.00 5.001,1-Dichloropropene 10 04/12/23 07:29 V31920TBL
<2.10 µg/L 2.10 5.00cis-1,3-Dichloropropene 10 04/12/23 07:29 V31920TBL
<1.50 µg/L 1.50 5.00trans-1,3-Dichloropropene 10 04/12/23 07:29 V31920TBL
<420 µg/L 420 2000
Ethanol 10 04/12/23 07:29 V31920TBL
124 µg/L 1.70 5.00Ethylbenzene 10 04/12/23 07:29 V31920TBL
<3.50 µg/L 3.50 30.0Hexachlorobutadiene 10 04/12/23 07:29 V31920TBL
<3.80 µg/L 3.80 10.02-Hexanone 10 04/12/23 07:29 V31920TBL
15.7 µg/L 1.80 5.00Isopropylbenzene 10 04/12/23 07:29 V31920TBL
<0.890 µg/L 0.890 5.004-Isopropyl toluene 10 04/12/23 07:29 V31920TBL
<7.10 µg/L 7.10 50.0Methyl Ethyl Ketone (MEK)10 04/12/23 07:29 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 11 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-8B
92688 Matrix:
3/30/2023 15:50
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
302 µg/L 1.40 10.0Methyl tert-butyl ether (MTBE)10 04/12/23 07:29 V31920TBL
<0.780 µg/L 0.780 10.04-Methyl-2-Pentanone 10 04/12/23 07:29 V31920TBL
<3.30 µg/L 3.30 20.0Methylene Chloride 10 04/12/23 07:29 V31920TBL
145 µg/L 4.70 10.0Naphthalene 10 04/12/23 07:29 V31920TBL
37.3 µg/L 1.90 5.00n-Propylbenzene 10 04/12/23 07:29 V31920TBL
<2.20 µg/L 2.20 5.00Styrene 10 04/12/23 07:29 V31920TBL
<1.60 µg/L 1.60 5.001,1,1,2-Tetrachloroethane 10 04/12/23 07:29 V31920TBL
<1.60 µg/L 1.60 5.001,1,2,2-Tetrachloroethane 10 04/12/23 07:29 V31920TBL
<2.20 µg/L 2.20 5.00
Tetrachloroethene 10 04/12/23 07:29 V31920TBL
4.61 J µg/L 2.20 5.00Toluene 10 04/12/23 07:29 V31920TBL
<3.80 µg/L 3.80 5.001,2,3-Trichlorobenzene 10 04/12/23 07:29 V31920TBL
<3.10 µg/L 3.10 5.001,2,4-Trichlorobenzene 10 04/12/23 07:29 V31920TBL
<1.60 µg/L 1.60 5.001,1,1-Trichloroethane 10 04/12/23 07:29 V31920TBL
<0.960 µg/L 0.960 5.001,1,2-Trichloroethane 10 04/12/23 07:29 V31920TBL
<1.80 µg/L 1.80 5.00Trichloroethene 10 04/12/23 07:29 V31920TBL
<1.80 µg/L 1.80 5.00
Trichlorofluoromethane 10 04/12/23 07:29 V31920TBL
<2.70 µg/L 2.70 5.001,2,3-Trichloropropane 10 04/12/23 07:29 V31920TBL
93.7 µg/L 1.90 5.001,2,4-Trimethylbenzene 10 04/12/23 07:29 V31920TBL
7.62 µg/L 1.80 5.001,3,5-Trimethylbenzene 10 04/12/23 07:29 V31920TBL
<10.0 µg/L 10.0 50.0Vinyl Acetate 10 04/12/23 07:29 V31920TBL
<1.70 µg/L 1.70 5.00Vinyl Chloride 10 04/12/23 07:29 V31920TBL
2.31 J µg/L 2.10 5.00o-Xylene 10 04/12/23 07:29 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 12 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-8B
92688 Matrix:
3/30/2023 15:50
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
105 µg/L 4.20 10.0m,p-Xylene 10 04/12/23 07:29 V31920TBL
107 J µg/L 2.10 5.00Xylene (Total)10 04/12/23 07:29 V31920
Surrogate: 4-Bromofluorobenzene 105 Limits: 70-130%04/12/23 07:2910 TBL V31920
Surrogate: Dibromofluoromethane 98.4 Limits: 70-130%04/12/23 07:2910 TBL V31920
Surrogate: 1,2-Dichloroethane - d4 96.8 Limits: 70-130%04/12/23 07:2910 TBL V31920
Surrogate: Toluene-d8 99.8 Limits: 70-130%04/12/23 07:2910 TBL V31920
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 13 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-9
92689 Matrix:
3/30/2023 15:20
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
8.86 J µg/L 1.80 10.0Acetone 1 04/12/23 06:15 V31920TBL
<0.180 µg/L 0.180 0.500Benzene 1 04/12/23 06:15 V31920TBL
<0.210 µg/L 0.210 0.500Bromobenzene 1 04/12/23 06:15 V31920TBL
<0.420 µg/L 0.420 1.00Bromochloromethane 1 04/12/23 06:15 V31920TBL
<0.160 µg/L 0.160 0.500Bromodichloromethane 1 04/12/23 06:15 V31920TBL
<1.50 µg/L 1.50 5.00Bromoform 1 04/12/23 06:15 V31920TBL
<0.280 µg/L 0.280 1.00Bromomethane 1 04/12/23 06:15 V31920TBL
1.23 µg/L 0.180 0.500n-Butylbenzene 1 04/12/23 06:15 V31920TBL
0.973 µg/L 0.200 0.500
sec-Butyl benzene 1 04/12/23 06:15 V31920TBL
<0.920 µg/L 0.920 2.00tert-Butyl benzene 1 04/12/23 06:15 V31920TBL
<0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 04/12/23 06:15 V31920TBL
<0.190 µg/L 0.190 0.500Chlorobenzene 1 04/12/23 06:15 V31920TBL
<0.190 µg/L 0.190 0.500Chlorodibromomethane 1 04/12/23 06:15 V31920TBL
<0.430 µg/L 0.430 1.00Chloroethane 1 04/12/23 06:15 V31920TBL
<0.220 µg/L 0.220 0.500Chloroform 1 04/12/23 06:15 V31920TBL
<0.220 µg/L 0.220 0.500
Chloromethane 1 04/12/23 06:15 V31920TBL
<0.200 µg/L 0.200 0.5002-Chlorotoluene 1 04/12/23 06:15 V31920TBL
<0.200 µg/L 0.200 0.5004-Chlorotoluene 1 04/12/23 06:15 V31920TBL
<0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 04/12/23 06:15 V31920TBL
<1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 04/12/23 06:15 V31920TBL
<0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 04/12/23 06:15 V31920TBL
<0.230 µg/L 0.230 0.500Dibromomethane 1 04/12/23 06:15 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 14 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-9
92689 Matrix:
3/30/2023 15:20
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
<0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 04/12/23 06:15 V31920TBL
<0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 04/12/23 06:15 V31920TBL
<0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 04/12/23 06:15 V31920TBL
<1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 04/12/23 06:15 V31920TBL
<0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 04/12/23 06:15 V31920TBL
<0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 04/12/23 06:15 V31920TBL
<0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 04/12/23 06:15 V31920TBL
<0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 04/12/23 06:15 V31920TBL
<0.180 µg/L 0.180 0.500
trans-1,2-Dichloroethene 1 04/12/23 06:15 V31920TBL
<0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 04/12/23 06:15 V31920TBL
<0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 04/12/23 06:15 V31920TBL
<0.210 µg/L 0.210 2.002,2-Dichloropropane 1 04/12/23 06:15 V31920TBL
<0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 04/12/23 06:15 V31920TBL
<0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 04/12/23 06:15 V31920TBL
<0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 04/12/23 06:15 V31920TBL
<42.0 µg/L 42.0 200
Ethanol 1 04/12/23 06:15 V31920TBL
0.946 µg/L 0.170 0.500Ethylbenzene 1 04/12/23 06:15 V31920TBL
<0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 04/12/23 06:15 V31920TBL
<0.380 µg/L 0.380 1.002-Hexanone 1 04/12/23 06:15 V31920TBL
10.5 µg/L 0.180 0.500Isopropylbenzene 1 04/12/23 06:15 V31920TBL
<0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 04/12/23 06:15 V31920TBL
<0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 04/12/23 06:15 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 15 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-9
92689 Matrix:
3/30/2023 15:20
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
<0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 04/12/23 06:15 V31920TBL
<0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 04/12/23 06:15 V31920TBL
<0.330 µg/L 0.330 2.00Methylene Chloride 1 04/12/23 06:15 V31920TBL
55.6 µg/L 0.470 1.00Naphthalene 1 04/12/23 06:15 V31920TBL
20.3 µg/L 0.190 0.500n-Propylbenzene 1 04/12/23 06:15 V31920TBL
<0.220 µg/L 0.220 0.500Styrene 1 04/12/23 06:15 V31920TBL
<0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 04/12/23 06:15 V31920TBL
<0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 04/12/23 06:15 V31920TBL
<0.220 µg/L 0.220 0.500
Tetrachloroethene 1 04/12/23 06:15 V31920TBL
0.471 J µg/L 0.220 0.500Toluene 1 04/12/23 06:15 V31920TBL
<0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 04/12/23 06:15 V31920TBL
<0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 04/12/23 06:15 V31920TBL
<0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 04/12/23 06:15 V31920TBL
<0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 04/12/23 06:15 V31920TBL
<0.180 µg/L 0.180 0.500Trichloroethene 1 04/12/23 06:15 V31920TBL
<0.180 µg/L 0.180 0.500
Trichlorofluoromethane 1 04/12/23 06:15 V31920TBL
<0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 04/12/23 06:15 V31920TBL
0.680 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 04/12/23 06:15 V31920TBL
0.338 J µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 04/12/23 06:15 V31920TBL
<1.00 µg/L 1.00 5.00Vinyl Acetate 1 04/12/23 06:15 V31920TBL
<0.170 µg/L 0.170 0.500Vinyl Chloride 1 04/12/23 06:15 V31920TBL
1.04 µg/L 0.210 0.500o-Xylene 1 04/12/23 06:15 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 16 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-9
92689 Matrix:
3/30/2023 15:20
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
3.61 µg/L 0.420 1.00m,p-Xylene 1 04/12/23 06:15 V31920TBL
4.65 µg/L 0.210 0.500Xylene (Total)1 04/12/23 06:15 V31920
Surrogate: 4-Bromofluorobenzene 103 Limits: 70-130%04/12/23 06:151 TBL V31920
Surrogate: Dibromofluoromethane 98.8 Limits: 70-130%04/12/23 06:151 TBL V31920
Surrogate: 1,2-Dichloroethane - d4 94.0 Limits: 70-130%04/12/23 06:151 TBL V31920
Surrogate: Toluene-d8 102 Limits: 70-130%04/12/23 06:151 TBL V31920
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 17 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-10
92690 Matrix:
3/30/2023 15:10
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
3.46 J µg/L 1.80 10.0Acetone 1 04/12/23 04:13 V31920TBL
2.69 µg/L 0.180 0.500Benzene 1 04/12/23 04:13 V31920TBL
<0.210 µg/L 0.210 0.500Bromobenzene 1 04/12/23 04:13 V31920TBL
<0.420 µg/L 0.420 1.00Bromochloromethane 1 04/12/23 04:13 V31920TBL
<0.160 µg/L 0.160 0.500Bromodichloromethane 1 04/12/23 04:13 V31920TBL
<1.50 µg/L 1.50 5.00Bromoform 1 04/12/23 04:13 V31920TBL
<0.280 µg/L 0.280 1.00Bromomethane 1 04/12/23 04:13 V31920TBL
0.268 J µg/L 0.180 0.500n-Butylbenzene 1 04/12/23 04:13 V31920TBL
0.259 J
µg/L 0.200 0.500
sec-Butyl benzene 1 04/12/23 04:13 V31920TBL
<0.920 µg/L 0.920 2.00tert-Butyl benzene 1 04/12/23 04:13 V31920TBL
<0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 04/12/23 04:13 V31920TBL
<0.190 µg/L 0.190 0.500Chlorobenzene 1 04/12/23 04:13 V31920TBL
<0.190 µg/L 0.190 0.500Chlorodibromomethane 1 04/12/23 04:13 V31920TBL
<0.430 µg/L 0.430 1.00Chloroethane 1 04/12/23 04:13 V31920TBL
<0.220 µg/L 0.220 0.500Chloroform 1 04/12/23 04:13 V31920TBL
<0.220 µg/L 0.220 0.500
Chloromethane 1 04/12/23 04:13 V31920TBL
<0.200 µg/L 0.200 0.5002-Chlorotoluene 1 04/12/23 04:13 V31920TBL
<0.200 µg/L 0.200 0.5004-Chlorotoluene 1 04/12/23 04:13 V31920TBL
1.78 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 04/12/23 04:13 V31920TBL
<1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 04/12/23 04:13 V31920TBL
<0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 04/12/23 04:13 V31920TBL
<0.230 µg/L 0.230 0.500Dibromomethane 1 04/12/23 04:13 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 18 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-10
92690 Matrix:
3/30/2023 15:10
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
<0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 04/12/23 04:13 V31920TBL
<0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 04/12/23 04:13 V31920TBL
<0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 04/12/23 04:13 V31920TBL
<1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 04/12/23 04:13 V31920TBL
<0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 04/12/23 04:13 V31920TBL
<0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 04/12/23 04:13 V31920TBL
<0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 04/12/23 04:13 V31920TBL
<0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 04/12/23 04:13 V31920TBL
<0.180 µg/L 0.180 0.500
trans-1,2-Dichloroethene 1 04/12/23 04:13 V31920TBL
<0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 04/12/23 04:13 V31920TBL
<0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 04/12/23 04:13 V31920TBL
<0.210 µg/L 0.210 2.002,2-Dichloropropane 1 04/12/23 04:13 V31920TBL
<0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 04/12/23 04:13 V31920TBL
<0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 04/12/23 04:13 V31920TBL
<0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 04/12/23 04:13 V31920TBL
<42.0 µg/L 42.0 200
Ethanol 1 04/12/23 04:13 V31920TBL
2.66 µg/L 0.170 0.500Ethylbenzene 1 04/12/23 04:13 V31920TBL
<0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 04/12/23 04:13 V31920TBL
<0.380 µg/L 0.380 1.002-Hexanone 1 04/12/23 04:13 V31920TBL
2.98 µg/L 0.180 0.500Isopropylbenzene 1 04/12/23 04:13 V31920TBL
<0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 04/12/23 04:13 V31920TBL
<0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 04/12/23 04:13 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 19 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-10
92690 Matrix:
3/30/2023 15:10
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
1.43 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 04/12/23 04:13 V31920TBL
<0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 04/12/23 04:13 V31920TBL
<0.330 µg/L 0.330 2.00Methylene Chloride 1 04/12/23 04:13 V31920TBL
7.66 µg/L 0.470 1.00Naphthalene 1 04/12/23 04:13 V31920TBL
6.64 µg/L 0.190 0.500n-Propylbenzene 1 04/12/23 04:13 V31920TBL
<0.220 µg/L 0.220 0.500Styrene 1 04/12/23 04:13 V31920TBL
<0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 04/12/23 04:13 V31920TBL
<0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 04/12/23 04:13 V31920TBL
<0.220 µg/L 0.220 0.500
Tetrachloroethene 1 04/12/23 04:13 V31920TBL
0.271 J µg/L 0.220 0.500Toluene 1 04/12/23 04:13 V31920TBL
<0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 04/12/23 04:13 V31920TBL
<0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 04/12/23 04:13 V31920TBL
<0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 04/12/23 04:13 V31920TBL
<0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 04/12/23 04:13 V31920TBL
<0.180 µg/L 0.180 0.500Trichloroethene 1 04/12/23 04:13 V31920TBL
<0.180 µg/L 0.180 0.500
Trichlorofluoromethane 1 04/12/23 04:13 V31920TBL
<0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 04/12/23 04:13 V31920TBL
3.51 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 04/12/23 04:13 V31920TBL
0.358 J µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 04/12/23 04:13 V31920TBL
<1.00 µg/L 1.00 5.00Vinyl Acetate 1 04/12/23 04:13 V31920TBL
<0.170 µg/L 0.170 0.500Vinyl Chloride 1 04/12/23 04:13 V31920TBL
0.272 J µg/L 0.210 0.500o-Xylene 1 04/12/23 04:13 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 20 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-10
92690 Matrix:
3/30/2023 15:10
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
5.74 µg/L 0.420 1.00m,p-Xylene 1 04/12/23 04:13 V31920TBL
6.01 J µg/L 0.210 0.500Xylene (Total)1 04/12/23 04:13 V31920
Surrogate: 4-Bromofluorobenzene 102 Limits: 70-130%04/12/23 04:131 TBL V31920
Surrogate: Dibromofluoromethane 99.4 Limits: 70-130%04/12/23 04:131 TBL V31920
Surrogate: 1,2-Dichloroethane - d4 94.2 Limits: 70-130%04/12/23 04:131 TBL V31920
Surrogate: Toluene-d8 101 Limits: 70-130%04/12/23 04:131 TBL V31920
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 21 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-18
92691 Matrix:
3/30/2023 15:40
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
<1.80 µg/L 1.80 10.0Acetone 1 04/12/23 04:37 V31920TBL
<0.180 µg/L 0.180 0.500Benzene 1 04/12/23 04:37 V31920TBL
<0.210 µg/L 0.210 0.500Bromobenzene 1 04/12/23 04:37 V31920TBL
<0.420 µg/L 0.420 1.00Bromochloromethane 1 04/12/23 04:37 V31920TBL
<0.160 µg/L 0.160 0.500Bromodichloromethane 1 04/12/23 04:37 V31920TBL
<1.50 µg/L 1.50 5.00Bromoform 1 04/12/23 04:37 V31920TBL
<0.280 µg/L 0.280 1.00Bromomethane 1 04/12/23 04:37 V31920TBL
<0.180 µg/L 0.180 0.500n-Butylbenzene 1 04/12/23 04:37 V31920TBL
<0.200 µg/L 0.200 0.500
sec-Butyl benzene 1 04/12/23 04:37 V31920TBL
<0.920 µg/L 0.920 2.00tert-Butyl benzene 1 04/12/23 04:37 V31920TBL
<0.180 µg/L 0.180 0.500Carbon Tetrachloride 1 04/12/23 04:37 V31920TBL
<0.190 µg/L 0.190 0.500Chlorobenzene 1 04/12/23 04:37 V31920TBL
<0.190 µg/L 0.190 0.500Chlorodibromomethane 1 04/12/23 04:37 V31920TBL
<0.430 µg/L 0.430 1.00Chloroethane 1 04/12/23 04:37 V31920TBL
<0.220 µg/L 0.220 0.500Chloroform 1 04/12/23 04:37 V31920TBL
<0.220 µg/L 0.220 0.500
Chloromethane 1 04/12/23 04:37 V31920TBL
<0.200 µg/L 0.200 0.5002-Chlorotoluene 1 04/12/23 04:37 V31920TBL
<0.200 µg/L 0.200 0.5004-Chlorotoluene 1 04/12/23 04:37 V31920TBL
<0.500 µg/L 0.500 0.500Di-Isopropyl Ether (DIPE)1 04/12/23 04:37 V31920TBL
<1.10 µg/L 1.10 2.001,2-Dibromo-3-Chloropropane 1 04/12/23 04:37 V31920TBL
<0.200 µg/L 0.200 0.5001,2-Dibromoethane 1 04/12/23 04:37 V31920TBL
<0.230 µg/L 0.230 0.500Dibromomethane 1 04/12/23 04:37 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 22 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-18
92691 Matrix:
3/30/2023 15:40
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
<0.220 µg/L 0.220 0.5001,2-Dichlorobenzene 1 04/12/23 04:37 V31920TBL
<0.190 µg/L 0.190 0.5001,3-Dichlorobenzene 1 04/12/23 04:37 V31920TBL
<0.210 µg/L 0.210 0.5001,4-Dichlorobenzene 1 04/12/23 04:37 V31920TBL
<1.20 µg/L 1.20 5.00Dichlorodifluoromethane 1 04/12/23 04:37 V31920TBL
<0.240 µg/L 0.240 0.5001,1-Dichloroethane 1 04/12/23 04:37 V31920TBL
<0.150 µg/L 0.150 0.5001,2-Dichloroethane 1 04/12/23 04:37 V31920TBL
<0.150 µg/L 0.150 0.5001,1-Dichloroethene 1 04/12/23 04:37 V31920TBL
<0.200 µg/L 0.200 0.500cis-1,2-Dichloroethene 1 04/12/23 04:37 V31920TBL
<0.180 µg/L 0.180 0.500
trans-1,2-Dichloroethene 1 04/12/23 04:37 V31920TBL
<0.190 µg/L 0.190 0.5001,2-Dichloropropane 1 04/12/23 04:37 V31920TBL
<0.130 µg/L 0.130 0.5001,3-Dichloropropane 1 04/12/23 04:37 V31920TBL
<0.210 µg/L 0.210 2.002,2-Dichloropropane 1 04/12/23 04:37 V31920TBL
<0.200 µg/L 0.200 0.5001,1-Dichloropropene 1 04/12/23 04:37 V31920TBL
<0.210 µg/L 0.210 0.500cis-1,3-Dichloropropene 1 04/12/23 04:37 V31920TBL
<0.150 µg/L 0.150 0.500trans-1,3-Dichloropropene 1 04/12/23 04:37 V31920TBL
<42.0 µg/L 42.0 200
Ethanol 1 04/12/23 04:37 V31920TBL
<0.170 µg/L 0.170 0.500Ethylbenzene 1 04/12/23 04:37 V31920TBL
<0.350 µg/L 0.350 3.00Hexachlorobutadiene 1 04/12/23 04:37 V31920TBL
<0.380 µg/L 0.380 1.002-Hexanone 1 04/12/23 04:37 V31920TBL
<0.180 µg/L 0.180 0.500Isopropylbenzene 1 04/12/23 04:37 V31920TBL
<0.089 µg/L 0.089 0.5004-Isopropyl toluene 1 04/12/23 04:37 V31920TBL
<0.710 µg/L 0.710 5.00Methyl Ethyl Ketone (MEK)1 04/12/23 04:37 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 23 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-18
92691 Matrix:
3/30/2023 15:40
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
<0.140 µg/L 0.140 1.00Methyl tert-butyl ether (MTBE)1 04/12/23 04:37 V31920TBL
<0.078 µg/L 0.078 1.004-Methyl-2-Pentanone 1 04/12/23 04:37 V31920TBL
<0.330 µg/L 0.330 2.00Methylene Chloride 1 04/12/23 04:37 V31920TBL
<0.470 µg/L 0.470 1.00Naphthalene 1 04/12/23 04:37 V31920TBL
<0.190 µg/L 0.190 0.500n-Propylbenzene 1 04/12/23 04:37 V31920TBL
<0.220 µg/L 0.220 0.500Styrene 1 04/12/23 04:37 V31920TBL
<0.160 µg/L 0.160 0.5001,1,1,2-Tetrachloroethane 1 04/12/23 04:37 V31920TBL
<0.160 µg/L 0.160 0.5001,1,2,2-Tetrachloroethane 1 04/12/23 04:37 V31920TBL
<0.220 µg/L 0.220 0.500
Tetrachloroethene 1 04/12/23 04:37 V31920TBL
<0.220 µg/L 0.220 0.500Toluene 1 04/12/23 04:37 V31920TBL
<0.380 µg/L 0.380 0.5001,2,3-Trichlorobenzene 1 04/12/23 04:37 V31920TBL
<0.310 µg/L 0.310 0.5001,2,4-Trichlorobenzene 1 04/12/23 04:37 V31920TBL
<0.160 µg/L 0.160 0.5001,1,1-Trichloroethane 1 04/12/23 04:37 V31920TBL
<0.096 µg/L 0.096 0.5001,1,2-Trichloroethane 1 04/12/23 04:37 V31920TBL
<0.180 µg/L 0.180 0.500Trichloroethene 1 04/12/23 04:37 V31920TBL
<0.180 µg/L 0.180 0.500
Trichlorofluoromethane 1 04/12/23 04:37 V31920TBL
<0.270 µg/L 0.270 0.5001,2,3-Trichloropropane 1 04/12/23 04:37 V31920TBL
<0.190 µg/L 0.190 0.5001,2,4-Trimethylbenzene 1 04/12/23 04:37 V31920TBL
<0.180 µg/L 0.180 0.5001,3,5-Trimethylbenzene 1 04/12/23 04:37 V31920TBL
<1.00 µg/L 1.00 5.00Vinyl Acetate 1 04/12/23 04:37 V31920TBL
<0.170 µg/L 0.170 0.500Vinyl Chloride 1 04/12/23 04:37 V31920TBL
<0.210 µg/L 0.210 0.500o-Xylene 1 04/12/23 04:37 V31920TBL
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 24 of 33
,
REPORT OF ANALYSISReport Number :
Project
Information :
NC 27416-0265
23-090-0011
01168
Pyramid Environmental & Engineering, P.C.
PO Box 16265
Wyatt Copeland
Greensboro
Angela D Overcash
Senior Project Manager
Received : 03/31/2023
Kim's Grocery
Report Date : 04/12/2023
Sample ID :
Lab No :
Sampled:MW-18
92691 Matrix:
3/30/2023 15:40
Aqueous
Analytical Method:
Prep Method:
Test Results Units MDL MQL By Analytical
Batch
Date / Time
Analyzed
DF
6200 PT
6200B Prep Batch(es):V31919 04/11/23 08:00
<0.420 µg/L 0.420 1.00m,p-Xylene 1 04/12/23 04:37 V31920TBL
<0.21 µg/L 0.210 0.500Xylene (Total)1 04/12/23 04:37 V31920
Surrogate: 4-Bromofluorobenzene 103 Limits: 70-130%04/12/23 04:371 TBL V31920
Surrogate: Dibromofluoromethane 99.4 Limits: 70-130%04/12/23 04:371 TBL V31920
Surrogate: 1,2-Dichloroethane - d4 94.8 Limits: 70-130%04/12/23 04:371 TBL V31920
Surrogate: Toluene-d8 101 Limits: 70-130%04/12/23 04:371 TBL V31920
Qualifiers/
Definitions
Estimated valueJDilution FactorDF
Method Quantitation LimitMQL
Page 25 of 33
Quality Control Data
23-090-0011Report No:
Project Description:
Client ID:Pyramid Environmental & Engineering, P.C.
Kim's Grocery
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V31920QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V31919
Associated Lab Samples: 92687, 92688, 92689, 92690, 92691
LRB-V31919 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
04/12/23 01:4610.01.80<1.80µg/LAcetone
04/12/23 01:460.5000.180<0.180µg/LBenzene
04/12/23 01:460.5000.210<0.210µg/LBromobenzene
04/12/23 01:461.000.420<0.420µg/LBromochloromethane
04/12/23 01:460.5000.160<0.160µg/LBromodichloromethane
04/12/23 01:465.001.50<1.50µg/LBromoform
04/12/23 01:461.000.280<0.280µg/LBromomethane
04/12/23 01:460.5000.180<0.180µg/Ln-Butylbenzene
04/12/23 01:460.5000.200<0.200µg/Lsec-Butyl benzene
04/12/23 01:462.000.920<0.920µg/Ltert-Butyl benzene
04/12/23 01:460.5000.180<0.180µg/LCarbon Tetrachloride
04/12/23 01:460.5000.190<0.190µg/LChlorobenzene
04/12/23 01:460.5000.190<0.190µg/LChlorodibromomethane
04/12/23 01:461.000.430<0.430µg/LChloroethane
04/12/23 01:460.5000.220<0.220µg/LChloroform
04/12/23 01:460.5000.220<0.220µg/LChloromethane
04/12/23 01:460.5000.200<0.200µg/L2-Chlorotoluene
04/12/23 01:460.5000.200<0.200µg/L4-Chlorotoluene
04/12/23 01:460.5000.500<0.500µg/LDi-Isopropyl Ether (DIPE)
04/12/23 01:462.001.10<1.10µg/L1,2-Dibromo-3-Chloropropane
04/12/23 01:460.5000.200<0.200µg/L1,2-Dibromoethane
04/12/23 01:460.5000.230<0.230µg/LDibromomethane
04/12/23 01:460.5000.220<0.220µg/L1,2-Dichlorobenzene
04/12/23 01:460.5000.190<0.190µg/L1,3-Dichlorobenzene
04/12/23 01:460.5000.210<0.210µg/L1,4-Dichlorobenzene
04/12/23 01:465.001.20<1.20µg/LDichlorodifluoromethane
04/12/23 01:460.5000.240<0.240µg/L1,1-Dichloroethane
Page 1 of 6Date:04/12/2023 02:44 PM
Page 26 of 33
Quality Control Data
23-090-0011Report No:
Project Description:
Client ID:Pyramid Environmental & Engineering, P.C.
Kim's Grocery
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V31920QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V31919
Associated Lab Samples: 92687, 92688, 92689, 92690, 92691
LRB-V31919 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
04/12/23 01:460.5000.150<0.150µg/L1,2-Dichloroethane
04/12/23 01:460.5000.150<0.150µg/L1,1-Dichloroethene
04/12/23 01:460.5000.200<0.200µg/Lcis-1,2-Dichloroethene
04/12/23 01:460.5000.180<0.180µg/Ltrans-1,2-Dichloroethene
04/12/23 01:460.5000.190<0.190µg/L1,2-Dichloropropane
04/12/23 01:460.5000.130<0.130µg/L1,3-Dichloropropane
04/12/23 01:462.000.210<0.210µg/L2,2-Dichloropropane
04/12/23 01:460.5000.200<0.200µg/L1,1-Dichloropropene
04/12/23 01:460.5000.210<0.210µg/Lcis-1,3-Dichloropropene
04/12/23 01:460.5000.150<0.150µg/Ltrans-1,3-Dichloropropene
04/12/23 01:4620042.0<42.0µg/LEthanol
04/12/23 01:460.5000.170<0.170µg/LEthylbenzene
04/12/23 01:463.000.350<0.350µg/LHexachlorobutadiene
04/12/23 01:461.000.380<0.380µg/L2-Hexanone
04/12/23 01:460.5000.180<0.180µg/LIsopropylbenzene
04/12/23 01:460.5000.089<0.089µg/L4-Isopropyl toluene
04/12/23 01:465.000.710<0.710µg/LMethyl Ethyl Ketone (MEK)
04/12/23 01:461.000.140<0.140µg/LMethyl tert-butyl ether (MTBE)
04/12/23 01:461.000.078<0.078µg/L4-Methyl-2-Pentanone
04/12/23 01:462.000.330<0.330µg/LMethylene Chloride
04/12/23 01:461.000.470<0.470µg/LNaphthalene
04/12/23 01:460.5000.190<0.190µg/Ln-Propylbenzene
04/12/23 01:460.5000.220<0.220µg/LStyrene
04/12/23 01:460.5000.160<0.160µg/L1,1,1,2-Tetrachloroethane
04/12/23 01:460.5000.160<0.160µg/L1,1,2,2-Tetrachloroethane
04/12/23 01:460.5000.220<0.220µg/LTetrachloroethene
04/12/23 01:460.5000.220<0.220µg/LToluene
Page 2 of 6Date:04/12/2023 02:44 PM
Page 27 of 33
Quality Control Data
23-090-0011Report No:
Project Description:
Client ID:Pyramid Environmental & Engineering, P.C.
Kim's Grocery
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V31920QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V31919
Associated Lab Samples: 92687, 92688, 92689, 92690, 92691
LRB-V31919 Matrix: AQULab Reagent Blank
Parameter
AnalyzedMQLMDLBlank
ResultUnits
%
Recovery
% Rec
Limits
04/12/23 01:460.5000.380<0.380µg/L1,2,3-Trichlorobenzene
04/12/23 01:460.5000.310<0.310µg/L1,2,4-Trichlorobenzene
04/12/23 01:460.5000.160<0.160µg/L1,1,1-Trichloroethane
04/12/23 01:460.5000.096<0.096µg/L1,1,2-Trichloroethane
04/12/23 01:460.5000.180<0.180µg/LTrichloroethene
04/12/23 01:460.5000.180<0.180µg/LTrichlorofluoromethane
04/12/23 01:460.5000.270<0.270µg/L1,2,3-Trichloropropane
04/12/23 01:460.5000.190<0.190µg/L1,2,4-Trimethylbenzene
04/12/23 01:460.5000.180<0.180µg/L1,3,5-Trimethylbenzene
04/12/23 01:465.001.00<1.00µg/LVinyl Acetate
04/12/23 01:460.5000.170<0.170µg/LVinyl Chloride
04/12/23 01:460.5000.210<0.210µg/Lo-Xylene
04/12/23 01:461.000.420<0.420µg/Lm,p-Xylene
04/12/23 01:464-Bromofluorobenzene (S)103 70-130
04/12/23 01:46Dibromofluoromethane (S)100 70-130
04/12/23 01:461,2-Dichloroethane - d4 (S)93.6 70-130
04/12/23 01:46Toluene-d8 (S)101 70-130
LCS-V31919 LCSD-V31919Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
29.5 73.769.727.940.0µg/LAcetone 40-160 5.5 20.0
20.6 10310220.420.0µg/LBenzene 70-130 0.9 20.0
21.3 10710621.120.0µg/LBromobenzene 70-130 0.9 20.0
20.7 10410220.320.0µg/LBromochloromethane 70-130 1.9 20.0
20.0 10097.019.420.0µg/LBromodichloromethane 70-130 3.0 20.0
Page 3 of 6Date:04/12/2023 02:44 PM
Page 28 of 33
Quality Control Data
23-090-0011Report No:
Project Description:
Client ID:Pyramid Environmental & Engineering, P.C.
Kim's Grocery
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V31920QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V31919
LCS-V31919 LCSD-V31919Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
19.9 99.596.019.220.0µg/LBromoform 70-130 3.5 20.0
18.3 91.590.518.120.0µg/LBromomethane 60-140 1.0 20.0
20.8 10410220.420.0µg/Ln-Butylbenzene 70-130 1.9 20.0
20.5 10310120.120.0µg/Lsec-Butyl benzene 70-130 1.9 20.0
20.6 10399.019.820.0µg/Ltert-Butyl benzene 70-130 3.9 20.0
20.5 10399.519.920.0µg/LCarbon Tetrachloride 70-130 2.9 20.0
21.1 10610220.320.0µg/LChlorobenzene 70-130 3.8 20.0
20.1 10110020.020.0µg/LChlorodibromomethane 70-130 0.4 20.0
19.1 95.593.018.620.0µg/LChloroethane 60-140 2.6 20.0
20.4 10210220.320.0µg/LChloroform 70-130 0.4 20.0
16.2 81.082.516.520.0µg/LChloromethane 60-140 1.8 20.0
20.5 10310120.220.0µg/L2-Chlorotoluene 70-130 1.4 20.0
20.5 10310020.020.0µg/L4-Chlorotoluene 70-130 2.4 20.0
19.5 97.594.518.920.0µg/LDi-Isopropyl Ether (DIPE)70-130 3.1 20.0
21.9 11010320.520.0µg/L1,2-Dibromo-3-Chloropropane 70-130 6.6 20.0
20.2 10198.019.620.0µg/L1,2-Dibromoethane 70-130 3.0 20.0
20.6 10394.018.820.0µg/LDibromomethane 70-130 9.1 20.0
21.3 10710420.720.0µg/L1,2-Dichlorobenzene 70-130 2.8 20.0
20.4 10210220.320.0µg/L1,3-Dichlorobenzene 70-130 0.4 20.0
20.5 10310020.020.0µg/L1,4-Dichlorobenzene 70-130 2.4 20.0
14.3 71.571.014.220.0µg/LDichlorodifluoromethane 60-140 0.7 20.0
20.5 10310220.320.0µg/L1,1-Dichloroethane 70-130 0.9 20.0
19.6 98.097.519.520.0µg/L1,2-Dichloroethane 70-130 0.5 20.0
21.1 10610020.020.0µg/L1,1-Dichloroethene 70-130 5.3 20.0
20.1 10197.019.420.0µg/Lcis-1,2-Dichloroethene 70-130 3.5 20.0
19.7 98.598.519.720.0µg/Ltrans-1,2-Dichloroethene 70-130 0.0 20.0
Page 4 of 6Date:04/12/2023 02:44 PM
Page 29 of 33
Quality Control Data
23-090-0011Report No:
Project Description:
Client ID:Pyramid Environmental & Engineering, P.C.
Kim's Grocery
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V31920QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V31919
LCS-V31919 LCSD-V31919Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
19.8 99.097.019.420.0µg/L1,2-Dichloropropane 70-130 2.0 20.0
19.7 98.596.019.220.0µg/L1,3-Dichloropropane 70-130 2.5 20.0
19.1 95.594.018.820.0µg/L2,2-Dichloropropane 70-130 1.5 20.0
21.6 10810721.420.0µg/L1,1-Dichloropropene 70-130 0.9 20.0
20.1 10110020.020.0µg/Lcis-1,3-Dichloropropene 70-130 0.4 20.0
19.6 98.097.019.420.0µg/Ltrans-1,3-Dichloropropene 70-130 1.0 20.0
469 93.894.8474500µg/LEthanol 60-140 1.0 20.0
20.1 10198.019.620.0µg/LEthylbenzene 70-130 2.5 20.0
21.4 10710120.220.0µg/LHexachlorobutadiene 70-130 5.7 20.0
19.1 95.589.017.820.0µg/L2-Hexanone 60-140 7.0 20.0
21.2 10610220.320.0µg/LIsopropylbenzene 70-130 4.3 20.0
21.3 10710320.620.0µg/L4-Isopropyl toluene 70-130 3.3 20.0
16.9 84.577.515.520.0µg/LMethyl Ethyl Ketone (MEK)60-140 8.6 20.0
20.6 10399.019.820.0µg/LMethyl tert-butyl ether (MTBE)70-130 3.9 20.0
19.5 97.588.517.720.0µg/L4-Methyl-2-Pentanone 60-140 9.6 20.0
20.4 10210220.320.0µg/LMethylene Chloride 70-130 0.4 20.0
21.8 10996.519.320.0µg/LNaphthalene 70-130 12.1 20.0
20.6 10310120.220.0µg/Ln-Propylbenzene 70-130 1.9 20.0
19.8 99.097.519.520.0µg/LStyrene 70-130 1.5 20.0
20.9 10510320.520.0µg/L1,1,1,2-Tetrachloroethane 70-130 1.9 20.0
19.9 99.595.519.120.0µg/L1,1,2,2-Tetrachloroethane 70-130 4.1 20.0
20.7 10410320.620.0µg/LTetrachloroethene 70-130 0.4 20.0
20.0 10010020.020.0µg/LToluene 70-130 0.0 20.0
22.7 11410621.120.0µg/L1,2,3-Trichlorobenzene 70-130 7.3 20.0
22.5 11310721.420.0µg/L1,2,4-Trichlorobenzene 70-130 5.0 20.0
20.9 10510220.420.0µg/L1,1,1-Trichloroethane 70-130 2.4 20.0
Page 5 of 6Date:04/12/2023 02:44 PM
Page 30 of 33
Quality Control Data
23-090-0011Report No:
Project Description:
Client ID:Pyramid Environmental & Engineering, P.C.
Kim's Grocery
QC Prep Batch Method:
Volatile Organic Compounds - GC/MS
6200B
V31920QC Analytical Batch(es):
Analysis Method:
Analysis Description:
6200 PT
QC Prep:V31919
LCS-V31919 LCSD-V31919Laboratory Control Sample & LCSD
LCSD
ResultParameter Max
RPD
LCSD
% Rec
LCS
%Rec
LCS
Result
Spike
Conc.Units
% Rec
Limits RPD
19.6 98.094.518.920.0µg/L1,1,2-Trichloroethane 70-130 3.6 20.0
21.0 10510621.120.0µg/LTrichloroethene 70-130 0.4 20.0
18.1 90.591.518.320.0µg/LTrichlorofluoromethane 60-140 1.0 20.0
19.7 98.589.517.920.0µg/L1,2,3-Trichloropropane 70-130 9.5 20.0
20.6 10310220.320.0µg/L1,2,4-Trimethylbenzene 70-130 1.4 20.0
21.3 10710320.620.0µg/L1,3,5-Trimethylbenzene 70-130 3.3 20.0
18.2 91.089.017.820.0µg/LVinyl Acetate 60-140 2.2 20.0
17.1 85.583.016.620.0µg/LVinyl Chloride 60-140 2.9 20.0
20.1 10199.019.820.0µg/Lo-Xylene 70-130 1.5 20.0
41.2 10310140.440.0µg/Lm,p-Xylene 70-130 1.9 20.0
10199.04-Bromofluorobenzene (S)70-130
97.8101Dibromofluoromethane (S)70-130
98.097.81,2-Dichloroethane - d4 (S)70-130
100101Toluene-d8 (S)70-130
Page 6 of 6Date:04/12/2023 02:44 PM
Page 31 of 33
Fed Ex
UPS
US Postal
Client
Lab
Courier
Other :
Shipment Receipt Form
Customer Number:
Customer Name:
Report Number:23-090-0011
Pyramid Environmental & Engineering, P.C.
01168
Shipping Method
Shipping container/cooler uncompromised?
Thermometer ID:IRT-15 2.8C
Chain of Custody (COC) present?Yes No
Yes No Not Present
Yes No Not Present
Yes No
COC agrees with sample label(s)? Yes No
COC properly completed
Samples in proper containers?
Sample containers intact?
Sufficient sample volume for indicated test(s)?
All samples received within holding time?
Cooler temperature in compliance?
Yes No
Yes No
Yes No
Yes No
Yes No
Yes NoCooler/Samples arrived at the laboratory on ice.
Samples were considered acceptable as cooling
process had begun.
Yes No
Yes No N/A
Yes No N/A
Yes No N/ASoil VOA method 5035 – compliance criteria met
Water - Sample containers properly preserved
Water - VOA vials free of headspace Yes No N/A
Trip Blanks received with VOAs
Low concentration EnCore samplers (48 hr)
High concentration pre-weighed (methanol -14 d) Low conc pre-weighed vials (Sod Bis -14 d)
High concentration container (48 hr)
Custody seals intact on shipping container/cooler?
Custody seals intact on sample bottles?
Number of coolers/boxes received
Yes No
1
Signature:Angelo Norvell Date & Time:03/31/2023 13:29:08
Special precautions or instructions included?
Comments:
Page 32 of 33
Page 33 of 33

APPENDIX D

Date Benzene MTBE08-16-96 1400NA11-22-99 13010009-28-00 156.210-03-01 269.612-12-02 3405204-29-03 19011009-04-03 1804011-17-03 1009003-02-04 30010005-25-04 20011008-13-04 1207111-17-04 977102-28-07 2.64.302-19-08 22<0.508-05-08 8.41.212-09-08 410.5306-08-09 131.701-20-10 2.10.5107-07-10 2.81.801-05-11 79<107-07-11 50.5301-10-12 4.1<0.507-25-12 8.6<0.501-23-13 37.8<0.508-01-13 1.3BDL02-05-14ND BDL03-04-15 5.3BDL07-18-16 1.8ND03-01-17 27.1ND02-09-22ND ND03-30-230.404 1.502040608010012005010015020025030035040008-16-9611-22-9909-28-0010-03-0112-12-0204-29-0309-04-0311-17-0303-02-0405-25-0408-13-0411-17-0402-28-0702-19-0808-05-0812-09-0806-08-0901-20-1007-07-1001-05-1107-07-1101-10-1207-25-1201-23-1308-01-1302-05-1403-04-1507-18-1603-01-1702-09-2203-30-23MTBE (ug/l)Benzene (ug/l)TimeBenzeneMTBEKim's GroceryMW-6 Benzene and Total MTBE Concentrations vs Time
Date Benzene MTBE11/22/1999 17,000BDL9/28/2000 19,000BDL10/3/2001 9,600BDL12/12/2002 1,700BDL4/29/2003 <100<5009/4/2003 <100<50011/17/2003 <100<5003/2/2004 7.7<505/25/2004 6.5<58/13/2004 <50<25011/17/2004 <5<52/28/2007 45118/23/2007 79312/19/2008 1201908/5/2008 120 88012/9/2008 210 20006/8/2009 110 10001/20/2010 220 17007/7/2010 390 24001/5/2011 120 13007/7/2011 100 2601/10/2012 118 6477/25/2012 302 3891/23/2013 14.612.58/1/2013 51.8 49.12/5/2014 127 56.73/4/2015 25 307/18/2016 748 8603/1/2017 259 8832/9/2022 1300 4093/30/2023 569 30205001,0001,5002,0002,5003,00002,0004,0006,0008,00010,00012,00014,00016,00018,00020,00011/1/199910/1/20009/1/20018/1/20027/1/20036/1/20045/1/20054/1/20063/1/20072/1/20081/1/200912/1/200911/1/201010/1/20119/1/20128/1/20137/1/20146/1/20155/1/20164/1/20173/1/20182/1/20191/1/202012/1/202011/1/202110/1/2022BenzeneMTBEKim's GroceryMW-8B Benzene and MTBE Concentrations vs TimeBenzene (ug/i)MTBE (ug/l)
0.010.020.030.040.050.060.00.0200.0400.0600.0800.01000.01200.01400.01600.0BenzeneMTBEKim's GroceryMW-9 Benzene and MTBE Concentrations vs TimeBenzene (ug/i)MTBE (ug/l)
Date Benzene MTBE11-22-99 34 130002-17-00--- ---09-28-00 16 66010-03-01 69 90012-12-02 56 110004-29-03 23 110009-04-03 23 110011-17-03 11 94003-02-04 14 74005-25-04 11 73008-13-04 12 63011-17-04 6.8 62002-28-070.92 14008-23-07 1313002-19-08 6.310008-05-08 37212-09-08 7.15706-08-09 115001-20-10 4.73407-07-10 9.8 3001-05-11 4.6 2007-07-11 9.914.801-10-12 4.311.807-25-12 6.39.101-23-13 5.47.108-01-13 2.13.402-05-14 4.84.903-04-15 6.85.207-18-16 4.12.203-01-17 2.42.402-09-22 1.71.703-30-23 2.691.4302004006008001000120014000102030405060708011-01-9911-01-0011-01-0111-01-0211-01-0311-01-0411-01-0511-01-0611-01-0711-01-0811-01-0911-01-1011-01-1111-01-1211-01-1311-01-1411-01-1511-01-1611-01-1711-01-1811-01-1911-01-2011-01-2111-01-22BenzeneMTBEKim's GroceryMW-10 Benzene and Total MTBE Concentrations vs TimeBenzene (ug/l)MTBE (ug/l)

APPENDIX E

The baseline groundwater contaminant mass is estimated based on the highest analytical results from 1999 sampling events.Groundwater Contaminant Mass Removal Calculation Kim's Grocery - NCDEQ Incident # 12543Greensboro, Guilford County, NC Estimated Groundwater Contaminant Mass Based on Average VOC Concentrations [µg]Initial (1999) 9449 752 10 10% 7.11E+09Date Average VOC Concentrations in Monitoring Wells[µg/L]Area with Monitoring Wells[m2]Estimated Plume Depth[m]EstimatedPorosity [%]2.02E+089-Feb-2022 8,457 752 10 10% 6.36E+0916-Nov-2017 268 752 10 10%2.35E+083-Mar-2023 312 752 10 10%