MO-4523_14987_CA_MRP_20201208_Groundwater Monitoring Report

Irerracon
December 8, 2020
Mr. Jeff Walston
North Carolina Department of Transportation
Roadside Environmental Unit
1 South Wilmington Street
Raleigh, North Carolina 27601
Re: Groundwater Monitoring Report
Mt. Pleasant Maintenance Yard
150 Dutch Road
Mt. Pleasant, Cabarrus County, North Carolina
NCDEQ UST Section Incident No. 14987
Terracon Project No. 71177023
Dear Mr. Walston:
Terracon Consultants, Inc. (Terracon) is pleased to submit the attached groundwater
monitoring report for the above -referenced site. This investigation was performed in general
accordance with the scope of services presented in Terracon's proposal dated April 23, 2020.
We appreciate the opportunity to be of service to you on this project. If there are any questions
regarding this report please do not hesitate to contact us.
Sincerely,
Terracon Consultants, Inc.
Allison K. Stehc, -r
Senior Staff Scientist
Attachments
Donald R. Malone, PE, RSM
Senior Environmental Engineer
Terracon Consultants Inc. 2401 Brentwood Rd. Suite 107 Raleigh, NC 27604
P 919-873-2211 F 919-873-9555 terracon.com

Groundwater Monitoring Report
Mt. Pleasant Maintenance Yard
Mt. Pleasant, Cabarrus County, North Carolina
December 8, 2020
Terracon Project No. 71177023
Prepared for:
North Carolina Department of Transportation
Raleigh, North Carolina
Prepared by:
Terracon Consultants, Inc.
Raleigh, North Carolina

Groundwater Monitoring Report
Mt. Pleasant Maintenance Yard
Mt. Pleasant, Cabarrus County, North Carolina
December 8, 2020
Terracon Project No. 71177023
QA- - - I
Allison K. Steng' .
4
Senior Staff Scientist
a9°eoneiegar�nrav gyp,
-0°m��A �(A(�e°d•d O1''v4 ate.
f�E SJO o
� o
SEAL w20195
Donald R. Malone, PE, RSA
Senior Environmental Engine.
Terracon Consultants Inc. 2401 Brentwood Rd. Suite 107 Raleigh, NC 27604
P 919-873-2211 F 919-873-9555 terracon.com

Groundwater Monitoring Report
NCDOT Mt. Pleasant Maintenance Yard Irerrialcon
December 8, 2020 Terracon Project No. 71177023
TABLE OF CONTENTS
1.0 INTRODUCTION.............................................................................................................1
1.1
Site Description....................................................................................................1
1.2
Site Operational History .......................................................................................1
1.3
Site Investigation History ......................................................................................2
1.4
Historical Receptor Information............................................................................2
1.5
Site Remedial History..........................................................................................2
1.6
Site Regulatory Status.........................................................................................3
1.7
Objectives and Scope of Work.............................................................................3
1.8
Standard of Care..................................................................................................3
1.9
Additional Scope Limitations................................................................................3
2.0 Receptor Information....................................................................................................4
2.1 Private Water Supply Wells..................................................................................4
2.2 Surface Water......................................................................................................4
2.3 Land Use and Places of Public Gathering............................................................4
3.0 FIELD ACTIVITIES AND METHODS..............................................................................4
3.1
Water Supply Well Sampling................................................................................5
3.2
Site Inspection and Well Network Evaluation.......................................................5
3.3
Water Level Measurements.................................................................................5
3.4
Groundwater Sample Collection...........................................................................5
3.5
Sample Analysis..................................................................................................6
3.6
Quality Assurance/Quality Control Samples.........................................................6
4.0 RESULTS.......................................................................................................................7
4.1 Groundwater Flow System...................................................................................7
4.2 Groundwater Analytical Results...........................................................................7
4.3 Evaluation for Vapor Intrusion..............................................................................7
4.4 Quality Control.....................................................................................................7
4.5 Data Review and Validation.................................................................................8
5.0 FINDINGS AND RECOMMENDATIONS.........................................................................8
6.0 REFERENCES................................................................................................................9
iv
Responsive ■ Resourceful ■ Reliable

Groundwater Monitoring Report
NCDOT ■ Mt. Pleasant Maintenance Yard Irerracon
December 8, 2020 ■ Terracon Project No. 71177023
FIGURES
Figure 1. Topographic Vicinity Map
Figure 2. Site Diagram
Figure 3. Receptor Survey
Figure 4. Surficial Groundwater Elevation Map
TABLES
Table 1. Water Supply Well Inventory
Table 2. Monitoring Well Construction Details and Water Level Elevations
Table 3. Geochemical Field Parameters in Monitoring Wells (August 2020)
Table 4. Summary of Groundwater Analytical Data
APPENDICES
Appendix A. Analytical Report and Chain of Custody Record
Appendix B. Historical Groundwater Analysis Tables
v
Responsive ■ Resourceful ■ Reliable

Groundwater Monitoring Report Irerracon
NCDOT ■ Mt. Pleasant Maintenance Yard
December 8, 2020 ■ Terracon Project No. 71177023
1.0 INTRODUCTION
Terracon Consultants, Inc. (Terracon) prepared this Groundwater Monitoring Report on behalf of
the North Carolina Department of Transportation (NCDOT) Roadside Environmental Unit. The
report presents the findings of recent field activities conducted by Terracon at the Mt. Pleasant
Maintenance Facility (the site), located at 150 Dutch Road in Mt. Pleasant, Cabarrus County, North
Carolina (Figure 1).
1.1 Site Description
The site, traversed by Dutch Road, is currently occupied by the NCDOT Cabarrus County
Maintenance Yard. The site is primarily asphalt -paved with isolated lawn and landscaped areas.
Several buildings are located on the site including administrative offices, maintenance shops, and
storage buildings. Various NCDOT machinery, vehicles, and equipment are also staged at the site.
The surrounding area is primarily used for agricultural or developed as rural residential, although
the Cabarrus County Correctional Center is located on the adjacent property to the south of the
site. Topography at the site slopes gently downward to the west towards Dutch Buffalo Creek,
which is located along the western property boundary.
1.2 Site Operational History
The site is currently occupied by the NCDOT Cabarrus County Maintenance Yard. Dating back to
1958, 12 underground petroleum storage tanks (USTs) have been maintained at the site. The
USTs have contained gasoline, diesel, kerosene, or waste oil. Nine of the USTs have been
removed from the site, while three remain in -place and are currently active. The following table
provides details regarding the current and former on -site USTs as identified in the 1997
Comprehensive Site Assessment Addendum (ECS, 1997) and the 2005 Tank Closure Report
(NCDOT, 2005). Locations are depicted on Figure 2.
UST ID
1
Size (gallons)
3,000
Contents
Waste oil
Date Installed
09/26/1969
Date Removed
02/14/1990
2
275
Kerosene
09/29/1958
02/14/1990
3
2,000
Kerosene
09/29/1958
02/14/1990
4
2,000
Gasoline
09/29/1958
02/14/1990
5
6,000
Gasoline
08/30/1970
02/23/1990
6
10,000
Diesel
08/29/1973
03/28/1991
7
10,000
Gasoline
08/29/1972
03/28/1991
8
10,000
Gasoline
1972?
03/28/1991
9
1,000
Heating
unknown
03/11/1997
10
10,000
Gasoline
02/14/1990
Currently in use
11
10,000
Diesel
02/14/1990
Currently in use
12
2,000
Waste oil
02/14/1990
1 05/31/2005
Responsive ■ Resourceful ■ Reliable 1

Groundwater Monitoring Report Irerracon
NCDOT Mt. Pleasant Maintenance Yard
December 8, 2020 Terracon Project No. 71177023
1.3 Site Investigation History
The site was initially investigated in May 1992 when three monitoring wells were installed following
the removal of UST Nos. 1 through 8 in 1990 and 1991. Additional data regarding the identification,
location, or analytical results associated with these wells was not available in the North Carolina
Department of Environmental Quality (NCDEQ) incident file for the site.
Thirteen monitoring wells (MW-1 through MW-10 and TP-1 through TP-3) were reportedly located
at the site by January 1997 (ECS, 1997). Based on calculated elevations from the on -site wells,
groundwater flows to the north. Petroleum constituent concentrations were known to have
historically been identified in monitoring wells MW-2, MW-4, MW-6, MW-7, MW-8 and MW-9. Free
product was historically measured in monitoring well MW-6 (1.5 inches on November 14, 1996
[ECS, 1997]). Naphthalene was detected at a concentration of 197 micrograms per liter (pg/L)
during the November 22, 1996 sampling event (ECS, 1997).
Residual soil contamination was reported in the vicinity of USTs Nos. 1 and 5 (ECS, 1997). The
most recent UST investigation occurred in 2005 during the removal of UST No. 12 (2,000-gallon
waste oil UST); however, no soils were removed during the UST closure activities for UST No. 12.
1.4 Historical Receptor Information
Subsurface utilities consisting of water, sewer, and stormwater drain lines are present at the site,
generally buried at depths to 3 feet below land surface (bls). Existing on -site buildings are
constructed as slab -on -grade; thus, crawlspaces are not present beneath the buildings.
The closest surface water feature is Dutch Buffalo Creek, which is located near the western
property boundary. Historically, seven water supply wells were identified within 1,500 feet of the
source area (ECS, 1997). Currently, municipal water is available to the site and surrounding
properties by the Town of Mt. Pleasant.
1.5 Site Remedial History
Remedial activities at the site have been limited to the removal of USTs and over -excavation of
soils near the USTs. UST Nos. 1 through 8 were removed in 1990 and 1991. Approximately
185 cubic yards of soil were reportedly removed and spread on the site with approval from the
NCDEQ. The on -site location of the spread soils is unknown. Soils were not excavated during the
removal of UST No. 9 in 2005.
E
Responsive ■ Resourceful ■ Reliable

Groundwater Monitoring Report Irerracon
NCDOT Mt. Pleasant Maintenance Yard
December 8, 2020 Terracon Project No. 71177023
1.6 Site Regulatory Status
The NCDEQ issued a Notice of Regulatory Requirements (NORR) as a result of the site's "High"
risk ranking (NCDEQ 2020). The NORR required semi-annual groundwater sampling events in
February and August 2020.
1.7 Objectives and Scope of Work
The objective of the scope of work was to monitor the dissolved phase plume conditions in the
groundwater at the site and sample nearby water supply wells for potential impacts. The report
contains a summary of the following activities and results:
■ sampling of the existing monitoring well network;
■ sampling of supply wells within 1,000 feet of the source area; and
■ recommendations for future site activities.
1.8 Standard of Care
Terracon's services were performed in a manner consistent with generally accepted practices of
the profession undertaken in similar studies in the same geographical area during the same time
period. Terracon makes no warranties, either expressed or implied, regarding the findings,
conclusions, or recommendations. Please note that Terracon does not warrant the work of
laboratories, regulatory agencies, or other third parties supplying information used in the
preparation of the report. These services were performed in accordance with the scope of work
authorized by our client, as reflected in our proposal.
1.9 Additional Scope Limitations
Findings, conclusions, and recommendations resulting from these services are based upon
information derived from the on -site activities and other services performed under this scope of
work, such information is subject to change over time. Subsurface conditions may vary from those
encountered at specific borings or wells or during other surveys, tests, assessments,
investigations, or exploratory services; thus, the data, interpretations, findings, and our
recommendations are based solely upon data obtained at the time and within the scope of these
services.
3
Responsive ■ Resourceful ■ Reliable

Groundwater Monitoring Report Irerracon
NCDOT Mt. Pleasant Maintenance Yard
December 8, 2020 Terracon Project No. 71177023
2.0 RECEPTOR INFORMATION
2.1 Private Water Supply Wells
Terracon conducted a windshield survey on February 3, 2017 to locate water supply wells within
a 1,500-foot radius of the site boundary. During the visual reconnaissance, properties were
assumed to maintain a water supply well if a wellhead cover was observed, such as faux rock, well
house or ornamental `wishing well' style structures. Based on our observations, Terracon identified
two water supply wells (WSW-2 and WSW-3) within a 1,000-foot radius of the site and four water
supply wells (WSW-1, WSW-4, WSW-5 and WSW-6) between 1,000 feet and 1,500 feet of the site
(Terracon, 2017). Well survey results are summarized on Table 1 and are depicted on Figure 3.
Terracon also contacted the Town of Mt. Pleasant Water and Sewer Department to determine if
developed properties identified within a 1,500-foot radius of the site had a water usage account.
Based on information provided by Ms. Amy Schueneman of the Town of Mt. Pleasant, the six
properties with observed water supply wells are not connected to municipal water. Property
owners located greater than 1,000 feet from the site were not directly contacted nor were water
supply well questionnaires issued to the property owners. As such, the use of each suspected well
(potable water or irrigation) located greater than 1,000 feet from the site was not confirmed
(Terracon, 2017).
2.2 Surface Water
The site is located within the Yadkin -Pee Dee River Basin. Dutch Buffalo Creek is located
approximately 300 feet to the west of the source area and a pond is located approximately 400 feet
to the north of the source area. Surface water runoff at the site generally flows to the west towards
Dutch Buffalo Creek. Surface water features are depicted on Figure 1 from a portion of the Mount
Pleasant, NC 7.5-Minute Topographic Quadrangle Map.
2.3 Land Use and Places of Public Gathering
Terracon did not identify properties considered places of public gathering within 1,500 feet of the
site. According to the Cabarrus County GIS database, land use within 1,500 feet of the site is
primarily residential and agricultural, although the Cabarrus County Correctional Center is located
on the adjacent property to the south of the site.
3.0 FIELD ACTIVITIES AND METHODS
Sampling activities were conducted in general accordance with the requirements listed in the
NORR (2020). Field activities conducted during the August 2020 sampling event included
measuring water levels in the wells to calculate groundwater elevations, collecting groundwater
4
Responsive ■ Resourceful ■ Reliable

Groundwater Monitoring Report
NCDOT Mt. Pleasant Maintenance Yard
December 8, 2020 Terracon Project No. 71177023
Irerracon
samples from 10 on -site monitoring wells, and attempting to collect groundwater samples from
water supply wells WSW-2 and WSW-3. The locations of the monitoring wells are shown on
Figure 2.
3.1 Water Supply Well Sampling
Terracon was unable to collect samples from water supply wells, WSW-2 and WSW-3, during the
August 2020 sampling event. The property owner for WSW-3 requested that the well no longer
be sampled and access was not gained for the sampling of WSW-2. Terracon staff knocked on
the door of the residence for well WSW-2; however, no one was present to authorize sampling of
the well.
3.2 Site Inspection and Well Network Evaluation
Terracon conducted an inspection of the on -site monitoring wells. Monitoring well construction
details are provided on Table 2. The 10 remaining on -site monitoring wells were found in good
condition during the August 2020 sampling event.
3.3 Water Level Measurements
During the August 2020 groundwater sampling event, water -level measurements were obtained
from the following shallow monitoring wells.
MW-1
MW-4R
MW-5
MW-6R MW-9
MW-7 TP-1
MW-8 TP-2
Water -level measurements were collected on August 18, 2020 to estimate the groundwater flow
direction. The water levels were measured with an electronic water level probe that was
decontaminated before and after use in each well. The water level measurements were converted
to water level elevations using existing top -of -casing elevation data for each well (Table 2). The
water level elevations were used to prepare a water level contour map to estimate the shallow
groundwater flow direction at the site, as discussed in Section 4.1 of this report.
3.4 Groundwater Sample Collection
During the August 2020 groundwater sampling event, groundwater samples were obtained from
the following monitoring wells.
Shallow monitoring wells:
MW-1 MW-4R MW-5
.01
Responsive ■ Resourceful ■ Reliable

Groundwater Monitoring Report Irerracon
NCDOT Mt. Pleasant Maintenance Yard
December 8, 2020 Terracon Project No. 71177023
MW-6R MW-8 TP-1
MW-7 MW-9 TP-2
Deep monitoring well:
MW-10
Groundwater samples were collected using a peristaltic pump. Low flow purging and sampling
techniques were used to the extent practical for each well. During purging, the following field
geochemical parameters (temperature, pH, conductivity, dissolved oxygen (DO) and oxidation-
reduction potential [ORP]) were measured using a handheld YSI 556 multi -parameter probe unit.
Purging continued until the field parameters stabilized. Table 3 summarizes indicator parameter
measurements of specific conductance, DO, ORP, pH, and temperature.
Sampling equipment was thoroughly decontaminated with phosphate -free soap and distilled water
prior to fieldwork and between use in each well to prevent cross -contamination. New polyethylene
tubing was used during the purging and sampling of each monitoring well. Decontamination water
and purge water was poured onto the land surface in accordance with NCDEQ guidelines.
3.5 Sample Analysis
Once collected, the groundwater samples were placed in appropriately labeled containers and
packed on ice pending delivery to Pace Analytical Services, LLC (Pace) in Columbia, South
Carolina. A completed chain -of -custody record was provided with the cooler containing
groundwater samples.
The following analytical methods were requested on the chain -of -custody for the August 2020
sampling event:
Volatile organic compounds (VOCs) by EPA Method 8260,
Semi -volatile organic compounds (SVOCs) by EPA Method 8270, and
Extractable petroleum hydrocarbons (EPH) and volatile petroleum hydrocarbons (VPH) by
MADEP Methods.
3.6 Quality Assurance/Quality Control Samples
The quality assurance/quality control (QA/QC) sampling included two trip blanks. The QA/QC
samples were submitted to the laboratory for analysis of VOCs by EPA Method 8260.
0
Responsive ■ Resourceful ■ Reliable

Groundwater Monitoring Report Irerracon
NCDOT Mt. Pleasant Maintenance Yard
December 8, 2020 Terracon Project No. 71177023
4.0 RESULTS
Field and laboratory analytical results from the groundwater sampling event conducted in August
2020 are discussed below. Laboratory analytical reports from Pace were reviewed and validated
to ensure that they met specific data -quality objectives. Laboratory analytical results are provided
in Appendix A.
4.1 Groundwater Flow System
Water level measurements were collected from the on -site monitoring wells on August 18, 2020.
The depth -to -water measurements and the converted water level elevations are listed in Table 2.
Depth -to -water measurements for the shallow wells (screened between 5 and 15 feet bls) ranged
from approximately 3 to 7 feet bls.
Water elevations were used to produce a potentiometric surface elevation map for the shallow
wells (Figure 4). Based on the water level measurements collected in August 2020, the
groundwater flow direction in the shallow aquifer zone appears directed to the north-northeast.
The groundwater flow direction is generally consistent with historical site data.
4.2 Groundwater Analytical Results
Groundwater samples were collected from 10 permanent monitoring wells on August 18, 2020.
Constituent concentrations in groundwater are presented in Table 4. Groundwater analytical
results for VOCs, SVOCs, EPH and VPH were compared with their 15A NCAC 2L groundwater
quality standards (2L standards). The only constituent that exceeded the 2L standard was C9-
C22 Aromatics in monitor well MW-6R at a concentration of 680 micrograms per liter (pg/L) as
compared to 2L standard of 200_pg/L.
4.3 Evaluation for Vapor Intrusion
Based on the Interstate Technology and Regulatory Council (ITRC) Petroleum Vapor Intrusion
(PVI) guidance, the depth to water and the constituent concentration data in MW-6R as well as the
proximity of MW-6R to the Main Office Building, additional evaluation of the PVI pathway for the
dissolved -phase plume may be warranted.
4.4 Quality Control
The trip blank samples did not contain VOCs at concentrations above the laboratory method
detection limits as shown in the laboratory analytical report (Appendix A).
7
Responsive ■ Resourceful ■ Reliable

Groundwater Monitoring Report Irerracon
NCDOT Mt. Pleasant Maintenance Yard
December 8, 2020 Terracon Project No. 71177023
4.5 Data Review and Validation
This section provides an evaluation of the laboratory analytical data for the completeness of data
package deliverables. Additionally, field data were reviewed to verify completion of required
documentation. Quality control data are provided in the laboratory analytical report (Appendix A).
Field activities were documented on groundwater sampling logs. Groundwater samples were
appropriately labeled, stored in sample containers on ice, and delivered to Pace in good condition
and properly preserved. The sample container chain -of -custody forms were forwarded with the
samples to the analytical laboratory.
The samples were analyzed for the parameters listed in Section 3.5. For the August 2020 sampling
event, two trip blanks accompanied the cooler sent to the laboratory for analysis of VOCs by EPA
Method 8260. VOCs were not detected in the trip blanks.
Caprolactam was detected in the method blank associated with the site samples. Caprolactam
was also detected in the samples from TP-2, MW-1, MW-4R, MW-6R, and MW-9 at estimated
concentrations below the laboratory limit of quantitation but above the detection limit ("J" qualified).
Due to the associated detection in the method blank, these detections were also qualified with a
"B" qualifier and should be used as biased high.
5.0 FINDINGS AND RECOMMENDATIONS
The findings of this report are summarized below:
Groundwater in the shallow aquifer is estimated to flow to the north-northeast;
C9-C22 Aromatics were detected at a concentration above its 2L Standard in MW-6R.
Compounds were not detected above 2L Standards in the remaining nine monitoring wells
sampled;
Terracon was unable to collect a sample from two water supply wells within 1,000 feet
(WSW-2 and WSW-3) during the August 2020 sampling event.
Based on measured groundwater concentrations and depth to water in MW-6R, as well as
the location of MW-6R in relation to the Main Office Building, additional evaluation of the
PVI pathway may be warranted.
Based on the current and historical results, Terracon offers the following recommendations:
Continue annual monitoring of the site until sample results are less than the 2L standards
for four consecutive sampling events.
A
Responsive ■ Resourceful ■ Reliable

Groundwater Monitoring Report
NCDOT Mt. Pleasant Maintenance Yard
December 8, 2020 Terracon Project No. 71177023
Irerracon
Remove monitor wells MW-4R, MW-5, MW-7 from the sampling and analysis plan for future
monitoring events because no constituents we detected in these wells greater than the
laboratory reporting limits during the history of the project.
Collect depth to water measurements from all on -site monitor wells during future events.
Continue attempting to sample the supply wells (WSW-2 and WSW-3) within 1,000 feet of
the source area.
6.0 REFERENCES
ECS, 1997. Engineering Consulting Services, Ltd (ECS). "Comprehensive Site Assessment
Addendum - North Carolina Department of Transportation Cabarrus County Maintenance Yard."
July 22.
NCDENR, 2010. North Carolina Administrative Code. "North Carolina's Groundwater Quality
Standards", Title 15A, Chapter 2L. Revised April 1.
NCDEQ, 2018. Underground Storage Tank Section, Division of Waste Management. "Notice of
Regulatory Requirements". Letter prepared for NCDOT Roadside Environmental Unit. September
13.
NCDEQ, 2019. UST Section, DWM. "Acknowledgement of Report Receipt". Letter prepared for
NCDOT Roadside Environmental Unit. February 5.
NCDEQ, 2020. UST Section, DWM. "Acknowledgement of Report Receipt". Letter prepared for
NCDOT Roadside Environmental Unit. January 21.
NCDOT, 2005. "Tank Closure Report - North Carolina Department of Transportation, 150 Dutch
Road, Mount Pleasant, Facility ID#0-024698". July 8.
Terracon, 2017. "Groundwater Monitoring Report, Mt. Pleasant Maintenance Yard". July 7.
7
Responsive ■ Resourceful ■ Reliable

FIGURES

1
0
Site
'I
7'
f
,state
X
0 1,000 2,000 4,000 6,000 8,000 10,000
Feet
CONTOUR INTERVAL 10 FEET
USGS TOPOGRAPHIC MAP
MOUNT PLEASANT (2002)AND LOCUST (1983), NC QUADRANGLE.
PM;
JLF
Project No.
71177023
Irerracon
Drawn By: CEW
Scalfin = 2,000 ft
Checked By: MT J
File Path:
Approved By-
MTJ
Date:
12/3/2020
12401 Bye t...d Drive, SOae 107 Raleigh, NC 27604
Phone: [phone] Fax: [phone]
! I
74
Topographic Vicinity Map FIGURE
NO.
Mt. Pleasant Maintenance Yard
150 Dutch Road
Mt.Pleasant, Cabarrus County North Carolina

%
/
/
MW-3 /
I
- � Truck
Storage /
Former Heating
Oil Tank
Main
Ile#. '• / f' Former 275-gal MW-10 9 - Office
4111, Kerosene Tank
Office y MW-6R
*.%zsStorage `MW2 MW9iM==6
7 -�- / /
\Storage i / � e �,/
' MW-8
r1.
� � ,� ,Former 2,000-gal �5 "
Kerosine Tank 2 �J
y' Former 6,00
} ', �• z {// / / 3 Gasoline Tdr
/ frFormer 2,000-1a1 4 r
� Gasoline Tank
Canopy.
Mw_1 V
TP-1 Current 10,000-gal
/ � , / i Gasoline and
�/ �� �_� �1
��DieselTanks
/ / / 11 (/ AL TP-2+ A �� �
a/
/ 1 -
DIAGRAMS FOR
GENERAL LOCATION
ONLY, AND IS NOT
INTENDED FOR
CONSTRUCTION
PURPOSEES
PM:
JLF
Drawn By:
CEW
Checked By:
MTJ
Approved By:
MTJ
Project No.:
71177023
Scale
1 in=80ft
File Path:
rDa7te
Dec 2020
10,000-gal
;Tank i
Former 2,000-gal -
Waste Oil Tanks
Current V
�1) Oil AST
F�
Former 3,000-gal
Used oil Tank
Phone: [phone] Fax: [phone]
— Legend
1 Current Waste Oil AST
— " Former UST
0 Current Gasoline and Diesel UST
1
l Building Footprint
— — ApproximateFenceline
•I�
Approximate Location of
Groundwater Monitoring Well
Well not Located/ Destroyed
10,000-gal r
e and Diesel i
i*1 � •
i = T
0 40
Site Diagram
Mt. Pleasant Maintenance Yard
150 Dutch Road
Mt.Pleasant, Cabarrus County North Carolina
Feet
80
FIGURE
2

DIAGRAMS FOR
GENERAL LOCATION
ONLY, AND IS NOT
INTENDED FOR
CONSTRUCTION
PURPOSEES
Legend
Parcel with a Suspected Water
0 ee Supply Well
- - F
ExtentOfTheNCDOTProperty
0 Cabarrus Parcel Boundary
4 i i 1 Parcel ID (See Table 1)
pOFeet
2 11 ayl 1� •'k - r ,
/To
7_ n
a�
— — --•- d4.rs" y -
E
- w
yy' S S N
e Feet
yy 0 250 500
a1 fl
PM:
JLF
Drawn By:
CEW
Checked By:
MTJ
Approved By:
MTJ
Project No.:
71177023
Scale
1 in = 500 ft
File Path:
Date:
Dec 2020
Irerracon
2701 Brentwood Drive, Suite 107 Raleigh, NC 27604
Phone: [phone] Fax: [phone]
Receptor Survey
Mt. Pleasant Maintenance Yard
150 Dutch Road
Mt.Pleasant, Cabarrus County North Carolina
FIGURE
a`
w
3 m
w
w

N Legend
r 1 —
/ Building Footprint
1
Cabarrus County Parcel Boundary
Approximate Fence Line
Inferred Groundwater Elevation
MW-3/ M W'5 Contour
/ 94:81 .
Esitmated Direction of
96 , Groundwater Flow
Approximate Location of
U
DIAGRAMS FOR
GENERAL LOCATION
ONLY, AND IS NOT
INTENDED FOR
CONSTRUCTION
PURPOSEES
♦ ♦ Groundwater Monitoring Well
/ t Well not Located/ Destroyed
a ♦ ♦ (98.42) Groundwater Elevation Based on
/ 98 I Arbitrary Datum of 100 feet
NM Not Measured
Truck /
Storage / MW-4R NC = Not Ca culated
/ MW-4 (NC)
1100 �!
♦ s* Main yl _
Mv\N0 MW-6R Office
(NM) ♦ (NC) /
;e
MW-2 MW-9 7�'-'MW 6
ANM
(100.73) ,� MW-7
Storage � / (98.53)
ti
MW-8
♦ 7
I
Canopy
ti TP-1
(NC)
/ TP-2
/ (NC) 17
/
PM:
JLF
Drawn By:
CEW
Checked By:
MTJ
Approved By:
MTJ
Project No.:
71177023
Scale
1 in=80ft
File Path:
Date:
Dec 2020
Phone: [phone] Fax: [phone]
11
Surficial Groundwater Elevation Map
(August 2020)
Mt. Pleasant Maintenance Yard
150 Dutch Road
Mt.Pleasant, Cabarrus County North Carolina
Feet
0 40 80
N
FIGURE
I, I

TABLES

Table 1
Water Supply Well Inventory
Mt. Pleasant Maintenance Yard
150 Dutch Road
Mt. Pleasant, Cabarrus County, NC
Terracon Project No. 71177023
Distance & Directions
Well StatusMunicipal
Parcel ID
Well No.
Property Owner
Mailing Address
Property Address
Waters
Parcel No.
Comments
from Source Area
and/or Use
P.O. Box 43
9670 NC Highway 73 E
No well observed and no municipal
1
WSW-1
Frank A. James
1,300 feet south
Potable
Not Connected
56709317260000
Mt. Pleasant, NC 28124
Mt. Pleasant, NC 28124
water connection
211 Dutch Road
211 Durch Road
Terracon did not receive a response
2
WSW-2
Warren Torraz McClure
Mt. Pleasant, NC 28124
Mt. Pleasant, NC 28124
800 feet north
Potable
Not Connected
56708157310000
to requests to sample well.
210 Dutch Road
210 Dutch Road
3
WSW-3
Jason P. Barnhardt
1,000 feet north
Potable
Not Connected
56709347870000
Well observed
Mt. Pleasant, NC 28124
Mt. Pleasant, NC 28124
Spencer Thomas Jr. and Daisy
219 Dutch Road
219 Dutch Road
4
WSW-4
1,250 feet north
Potable
Not Connected
56709421300000
Well observed
Thomas
Mt. Pleasant, NC 28124
Mt. Pleasant, NC 28124
Jay F. Northup III and Laurie
811 West State Road
224 Dutch Road
5
WSW-5
1,350 feet north
Potable
Not Connected
56709472030000
Well observed
Northup
Cortland, NY 13045
Mt. Pleasant, NC 28124
Jimmie D. Vanover and Della
P.O. Box 1756
231 Dutch Road
6
WSW-6
1,450 feet north
Potable
Not Connected
56709422790000
No municipal water connection.
K. Vanover
Concord, NC 28206
Mt. Pleasant, NC 28124
1
Notes:
- Not connected to municipal water as of the 2017 Groundwater Monitoring Report (according to Ms. Amy Shueneman of the Town of Mt. Pleasant).

Table 2
Monitoring Well Construction Details and Water Level Elevations
Mt. Pleasant Maintenance Yard
150 Dutch Road
Mt. Pleasant, Cabarrus County, NC
Terracon Project No. 71177023
Well ID
Date Installed
(mm/dd/yy)
Well Diameter
(in)
Screen Interval
(ft bls)
Top -of -Casing
Elevation*
(ft)
Date Measured
(mm/dd/yy)
Total Depth
(ft bls)
Depth to
Water
(ft bTOC)
Groundwater
Elevation (ft)
Casing
Mount
Well Status
SURFICIAL MONITORING WELLS
MW-1
05/13/92 - 05/15/92
2
4.5 - 14.5
103.18
01/25/17
15.0
5.0
98.18
flush
Active
11/02/17
8.0
95.22
05/30/18
6.7
96.48
11/14/18
5.48
97.70
08/14/19
7.91
95.27
02/25/20
5.71
97.47
08/18/20
6.90
96.28
MW-2
05/13/92 - 05/15/92
2
4.5 - 14.5
101.69
NM
15.6
NM
NM
flush
Destroyed/Paved Over
MW-3
05/13/92 - 05/15/92
2
5.0-15.0
99.47
NM
15.5
NM
NM
flush
Destroyed/Paved Over
MW-4
10/19/1992
2
4.0 - 14.0
102.77
NM
15.3
NM
NM
flush
Destroyed/Paved Over
MW-4R
11/6/2017
2
4.65 - 14.65
NS
11/06/17
14.7
6.71
NC
flush
Active
05/30/18
6.47
NC
11/14/18
4.76
NC
08/14/19
6.57
NC
02/25/20
5.88
NC
08/18/20
6.33
NC
MW-5
10/19/1992
2
4.0 - 14.0
100
01/25/17
15.2
4.79
95.21
flush
Active
11/02/17
6.11
93.89
05/30/18
5.34
94.66
11/14/18
4.42
95.58
08/14/19
5.79
94.21
02/25/20
4.91
95.09
08/18/20
5.19
94.81
MW-6
10/19/1992
2
4.0-14.0
104.54
NM
15.3
NM
NM
flush
Damaged
MW-6R
11/6/2017
2
5.16 - 15.16
NS
11/06/17
15.16
5.55
NC
flush
Active
05/30/18
4.42
NC
11/14/18
3.91
NC
08/14/19
3.75
NC
02/25/20
2.07
NC
08/18/20
4.83
NC

Table 2
Monitoring Well Construction Details and Water Level Elevations
Mt. Pleasant Maintenance Yard
150 Dutch Road
Mt. Pleasant, Cabarrus County, NC
Terracon Project No. 71177023
Well ID
Date Installed
(mm/dd/yy)
Well Diameter
(in)
Screen Interval
(ft bls)
Top -of -Casing
Elevation*
(ft)
Date Measured
(mm/dd/yy)
Total Depth
(ft bls)
Depth to
Water
(ft bTOC)
Groundwater
Elevation (ft)
Casing
Mount
Well Status
MW-7
11/12/96 - 11/13/96
2
5.0 - 10.0
105.21
01/25/17
10.0
5.14
100.07
flush
Active
11/02/17
6.79
98.42
05/30/18
6.18
99.03
11/14/18
5.37
99.84
08/14/19
6.48
98.73
02/25/20
5.68
99.53
08/18/20
1 6.68
98.53
MW-8
11/12/96 - 11/13/96
2
5.0 - 10.0
105.67
01/25/17
10.0
3.49
102.18
flush
Active
11/02/17
6.06
99.61
05/30/18
4.52
101.15
11/14/18
3.3
102.37
08/14/19
4.87
100.80
02/25/20
3.44
102.23
08/18/20
5.36
100.31
MW-9
11/12/96- 11/13/96
2
5.0 - 10.0
104.1
01/25/17
10.0
3.19
100.91
flush
Active
11/02/17
4.35
99.75
05/30/18
3.21
100.89
11/14/18
3.11
100.99
08/14/19
3.60
100.50
02/25/20
3.14
100.96
08/18/20
3.37
100.73
TP-1
Unknown
4
Unknown
Unknown
01/25/17
11.75
3.44
NC
flush
Active
11/02/17
5.49
NC
05/30/18
4.12
NC
11/14/18
3.11
NC
08/14/19
5.10
NC
02/25/20
4.24
NC
08/18/20
4.71
NC
TP-2
Unknown
4
Unknown
Unknown
01/25/17
11.0
4.44
NC
flush
Active
11/02/17
6.38
NC
05/30/18
5.02
NC
11/14/18
4.02
NC
08/14/19
6.07
NC
02/25/20
5.20
NC
08/18/20
5.73
NC

Table 2
Monitoring Well Construction Details and Water Level Elevations
Mt. Pleasant Maintenance Yard
150 Dutch Road
Mt. Pleasant, Cabarrus County, NC
Terracon Project No. 71177023
Well ID
Date Installed
(mm/dd/yy)
Well Diameter
(in)
Screen Interval
(ft bls)
Top -of -Casing
Elevation*
(ft)
Date Measured
(mm/dd/yy)
Total Depth
(ft bls)
Depth to
Water
(ft bTOC)
Groundwater
Elevation (ft)
Casing
Mount
Well Status
TP-3
Unknown
Unknown
Unknown
105.39
NM
Unknown
NM
NM
flush
Destroyed/Paved Over
DEEP MONITORING WELL
MW-10
11/12/96 - 11/13/96
2
72.5 - 92.5
103.79
01/25/17
92 5
5.01
98.78
flush
Active
05/30/18
3.55
100.24
11/14/18
2.42
101.37
08/14/19
4.55
99 24
02/25/20
3.10
100.69
08/18/20
NM
NM
NOTES:
*Top of casing elevation based on an assumed datum of 100 feet.
Monitoring wells MW-2, MW-3, MW-4 and TP-3 have not been located and are presumed destroyed.
Monitoring wells MW-4R and MW-6R were installed on 11/2/17 to replace wells MW-4 and MW-6 and have not been surveyed.
ft bTOC = feet below top of casing
ft bls = feet below land surface
in = inches
NM = Not Measured
NS = Not Surveyed
NC = Not Calculated; top of casing elevation not known

Table 3
Geochemical Field Parameters in Monitoring Wells (August 2020)
Mt. Pleasant Maintenance Yard
150 Dutch Road
Mt. Pleasant, Cabarrus County, North Carolina
Terracon Project No. 71177023
Sample ID
Field Parameter
(units)
Conductivity
(VS/cm)
Dissolved Oxygen
(mg/L)
ORP
(mv)
pH
(SU)
Temperature
VC )
Sample Date
MW-1
08/18/20
1,552
0.19
-18.9
7.46
27.9
MW-4R
08/18/20
1,168
0.28
-33.9
8.00
26.6
MW-5
08/18/20
3,055
0.20
93.7
7.60
24.6
MW-6R
08/18/20
318.0
0.39
-47.0
6.41
29.9
MW-7
08/18/20
363.6
0.45
107.1
6.23
27.4
MW-8
08/18/20
2,008
0.27
-34.7
6.49
28.2
MW-9
08/18/20
498
0.25
99.5
7.20
30.3
MW-10
08/18/20
622
2.57
48.9
7.64
30.1
TP-1
08/18/20
1,369
0.22
-118.6
7.57
23.9
TP-2
08/18/20
298.8
0.60
64.6
6.57
24.4
NOTES:
µS/cm = microsiemens per centimeter
mg/L = micrograms per liter
my = millivolts
SU = Standard Units
°C = degrees celsius

Table 4
Summary of Groundwater Analytical Data
Mt. Pleasant Maintenance Yard
150 Dutch Road
Mt. Pleasant, Cabarrus County, North Carolina
Terracon Project No. 71177023
y
Q
C
m
o2
E
m
O
V
O O
V V
w
V
6
�^
«
2
3.
« m
H
m
r
iY
Q
L
Q
_
N L
a s
E
O.
V
W
G
C
G
p
w
N
¢
Z
O
a
E
U
V
V
G
U
V
Sample ID
Sample Date
EPA Method 8260
EPA Method 8270
MADEP
SURFICIAL MONITORING WELLS
01/25/17
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<0.5
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
NA
NA
NA
11/02/17
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
NA
NA
NA
05/30/18
QO
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
2.8J
<8.0
<4.0
0.91
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
MW-1
11/14/18
QO
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
1.41
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
08/14/19
QO
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
2.6 BJ
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
<110
<75
<75
02/25/20
<4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.2
<0.2
2.61
<1
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
<100
<100
<15
08/18/20
<4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.2
<0.2
3.51
1.9 B1
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
<100
<95
<15
11/06/17
2.11
<0.5
<0.5
1.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
<4.0
0.851
<0.8
<0.8
<0.8
<0.8
NA
NA
NA
05/30/18
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
<4.0
0.921
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
11/14/18
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
6.0
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
MW-4R
08/14/19
5.11
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.5
<0.5
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
02/25/20
<4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.2
<0.2
<0.5
<1
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
<100
<100
<15
08/18/20
<4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.2
<0.2
3.41
1.9BJ
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
<100
<95
<15
01/25/17
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<0.5
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
NA
NA
NA
11/02/17
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
1.71
0.871
<0.8
<0.8
<0.8
<0.8
NA
NA
NA
05/30/18
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
2.8J
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
MW-5
11/14/18
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
3.11
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
08/14/19
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
24
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
02/25/20
<4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.2
<0.2
<0.4
<1
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
<100
<100
<15
08/18/20
<4
<0A
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.2
<0.2
3.41
<1
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
<100
<100
<15
11/06/17
3.3J
<0.5
0.91
7.7
<0.5
4.1
<0.5
4.01
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
6.2
<4.0
<0.8
<0.8
<0.8
<0.8
NA
NA
NA
05/30/18
<10
<0.5
<0.5
<0.5
0.57
1.2
2.3
2.8J
<0.5
<0.5
<1.0
5.2
<0.8
2.4J
<8.0
<4.0
1.3J
6.4
<0.8
<0.8
<0.8
400
100
<75
11/14/18*
<10
<0.5
<0.5
<0.5
<0.5
0.76
1.8
1.71
<0.5
<0.5
<1.0
3.6
0.581
<4.0
<8.0
2.21
0.981
4.9
<0.8
<0.8
<0.8
370
97
<75
MW-6R
08/14/19
<10
<0.5
<0.5
<0.5
<0.5
1.1
1.5
2.51
<0.5
<0.5
<1.0
2.5
0.42J
<4.0
<8.0
1 <4.0
<4.0
3.0
0.291
0.491
1.4
509
110
27J
02/25/20
<4
<0.4
<0.4
<0.4
<0.4
1 <0.4
<0.4
<0.4
<0.4
<0.4
<0.4
0.291
<0.4
<0.5
<1
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
38
311
<15
08/18/20
<4
<0.4
<0.4
<0.4
<0.4
<0.4
1.3
0.931
<0.4
<0.4
<0.4
4.5
0.561
3.51
1.9B1
<0.5
<0.5
5.5
<0.2
<0.2
2.0
680
90
<15
01/25/17
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<0.5
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
NA
NA
NA
11/02/17
<10
<0.5
<0.5
0.67
<0.5
<0.5
<0.5
<5.0
<0.5
0.54
0.63J
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
NA
NA
NA
05/30/18
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
MW-7
11/14/18
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
08/14/19
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
02/25/20
<4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.2
<0.2
<0.5
<1
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
<100
<100
<15
08/18/20
<4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.2
<0.2
3.41
<1
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
151
<100
<15
01/25/17
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<0.5
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
NA
NA
NA
11/02/17
3.91
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
0.461
<0.5
<0.5
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
NA
2.21
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
2.0
<0.5
<1.0
<0.8
<0.8
2.61
<8.0
<4.0
1.11
<0.8
<0.8
<0.8
<0.8
<100MW-8
11/14/18
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
3.9
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
3.2J
0.951
<0.8
<0.8
<0.8
<0.8
<10008/14/19
4.71
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
1.4
<0.5
<1.0
<0.8
<0.8
<4.0
3.3B1
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
7.21
=NANA05/30/18
02/25/20
<4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
2.9
<0.4
<0.4
<0.2
<0.2
<0.4
<1
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
<100
08/18/20<4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
1.5
<0.4
<0.4
<0.2
<0.2
3.51
<1
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
10J

Table 4
Summary of Groundwater Analytical Data
Mt. Pleasant Maintenance Yard
150 Dutch Road
Mt. Pleasant, Cabarrus County, North Carolina
Terracon Project No. 71177023
y
Q
C
m
o2
`o
E
m
O
V
O O
V V
c
w
'Sr
a
>
6
�^
°
.>,
«
2
r
w'1
3.
« m
H
>
m
F
iY
Q
L
<
_
N L
1f 6
E
m
O.
V
to
W
G
Y
C
G
a
p
w
>
N
¢
Z
O
1
E
N
U
a
V
V
G
U
V
Sample ID
Sample Date
EPA Method 8260
EPA Method 8270
MADEP
SURFICIAL MONITORING WELLS
01/25/17
13
<0.5
<0.5
<0.5
<0.5
2.6
2.4
4.51
<0.5
<0.5
<0.5
1.3
1.3
<4.0
<8.0
<4.0
<4.0
1.4
<0.8
1.4
<0.8
NA
NA
NA
11/02/17
6.11
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<0.5
<0.8
<0.8
<4.0
2.41
<4.0
1.11
<0.8
<0.8
1.2
<0.8
NA
NA
NA
05/30/18
9.11
<0.5
<0.5
<0.5
0.49J
0.451
1.6
<5.0
<0.5
<0.5
<1.0
1.1
1.1
2.3J
<8.0
<4.0
0.821
1.1
<0.8
<0.8
<0.8
60
57J
<75
MW-9
11/14/18
8.91
<0.5
<0.5
<0.5
<0.5
1.3
2.0
1.5.1
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
2.7.1
<4.0
<0.8
<0.8
<0.8
<0.8
87
95
<75
08/14/19
6.2J
<0.50
<0.5
<0.5
<0.5
0.45.1
0.65
<5.0
<0.5
<0.5
<1.0
0.28J
<0.8
2.3J
5.2 Bl
<4.0
<4.0
0.23J
<0.8
<0.8
<0.8
30
33 J
31 J
02/25/20
8.4J
<0.4
<0.4
<0.4
<0.4
1.3
1.5
22.1
<0.4
<0.4
<0.4
1.1
<0.2
<0.5
<1
<0.5
<0.5
1.3
<0.2
<0.2
<0.2
84
90
52J
08/18/20
7.8J
<0.4
<0.4
<0.4
<0.4
1.0
1.2
0.86J
<0.4
<0.4
<0.4
0.771
<0.2
3.61
4.1BJ
<0.5
<0.5
0.91
<0.2
<0.2
<0.2
197
51
45J
01/26/17
3.4J
0.8
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<0.5
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
NA
NA
NA
11/02/17
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<0.5
<0.8
<0.8
<4.0
<8.0
<4.0
<0.8
<0.8
<0.8
<0.8
NA
NA
NA
05/30/18
3.21
<0.5
<0.5
<0.5
2.7
0.54
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
2.41
<8.0
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
TP-1
11/14/18
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
08/14/19
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
02/25/20
<4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.2
<0.2
<0.5
<1
4<4.0<4.0
<0.5
<0.2
<0.2
<0.2
<0.2
<100
<100
<15
08/18/20
4.0J
<0A
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
0.44J
<0A
<0.4
<0.2
<0.2
3.5J
<1
<0.5
<0.2
<0.2
<0.2
<0.2
<100
<95
<15
01/26/17
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<0.5
<0.8
<0.8
<4.0
<8.0
<4.0
<0.8
<0.8
<0.8
<0.8
NA
NA
NA
11/02/17
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<0.5
<0.8
<0.8
<4.0
<8.0
<4.0
<0.8
<0.8
<0.8
<0.8
NA
NA
NA
05/30/18
4.9J
<0.5
<0.5
<0.5
2.0
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
2.7J
<8.0
<4.0
1.21
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
TP-2
11/14/18
3.9J
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
08/14/19
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
3.4 BJ
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
02/25/22
<4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.2
<0.2
<0.5
<1
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
<100
<100
<15
OS/18/20
<4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.2
<0.2
3.51
2.3BJ
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
<105
Q00
<15
DEEP MONITORING WELL
01/25/17
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<0.5
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
NA
NA
NA
05/30/18
<10
<0.5
<0.5
<0.5
0.49J
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
2.41
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
11/14/18
2.5J
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
MW-10
08/14/19
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<1.0
<0.8
<0.8
1.11
2.6B1
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
02/25/20
<4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.2
<0.2
<0.5
<1
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
<100
<100
<15
08/18/20
<4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.4
<0.2
<0.2
3.4J
<1
<0.5
<0.5
<0.2
<0.2
<0.2
<0.2
<100
<100
<15
WATER SUPPLY WELLS
05/30/18
<10
<0.5
<0.5
<0.5
1.0
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
<0.8
<0.8
<0.8
<100
<75
<75
WSW-3
11/14/18
<10
<0.5
<0.5
<0.5
<0.5
<0.5
<0.5
<5.0
<0.5
<0.5
<1.0
<0.8
<0.8
<4.0
<8.0
<4.0
<4.0
<0.8
1.1
1.6
<0.8
<100
<75
<75
NCAC 2L GWQS
6,000
1
0.6
70
3
NS
70
NS
20
600
20
80
2000
3
4,000
6,000
700
300
30
6
200
200
700
400
Notes: 1) Compounds detected in one or more samples are shown.Dibenzofuran (1.0J pg/L) was detected in MW-6R during the 11/14/18 sampling event and Pyrene (0.231 pg/L) was detected in MW-611 during the 8/18/20 sampling event
2) Concentrations are reported in micrograms per liter (µg/L).
3) NCAC 2L GWQS = North Carolina Administrative Code Subchapter 2L Groundwater Quality Standards (April 1, 2013).
4) Values in BOLD were detected above the method detection limit. Values shaded are above the NCAC 2L GWQS.
5) J = Estimated value above the detection limit.
6) NS = Standard not established
7) NA = Not analyzed
8) B = Detected in the laboratory method blank

APPENDIX A
Analytical Report and Chain of Custody Record

0
aceAnalytical
Report of Analysis
Terracon Consultants, Inc.
2701 Westport Road
Charlotte, NC 28208
Attention: Flora D'Souza
Project Name: NC DOT -Mt. Pleasant 2020
Project Number: 701177023
Lot Number:VH19129
Date Completed:09/03/2020
09/05/2020 12:22 PM
Approved and released by:
Project Manager II: Cathy S. Dover
AAW
ANSI ?WA W AccAMlf . i; im
A C C R E S I T E❑
TWRNG L 8ORATORY
The electronic signature above is the equivalent of a handwritten signature.
This report shall not be reproduced, except in its entirety, without the written approval of Pace Analytical Services, LLC.
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172
Tel:[phone] Fax:[phone] www.pacelabs.com
Page 1 of 118

PACE ANALYTICAL SERVICES, LLC
SC DHEC No: 32010001 NELAC No: E87653 NC DENR No: 329 NC Field Parameters No: 5639
Case Narrative
Terracon Consultants, Inc.
Lot Number: VH19129
This Report of Analysis contains the analytical result(s) for the sample(s) listed on the Sample Summary
following this Case Narrative. The sample receiving date is documented in the header information
associated with each sample.
All results listed in this report relate only to the samples that are contained within this report.
Sample receipt, sample analysis, and data review have been performed in accordance with the most
current approved NELAC standards, the Pace Analytical Services, LLC ("Pace") Quality Assurance
Management Plan (QAMP), standard operating procedures (SOPS), and Pace policies. Any exceptions to
the NELAC standards, the QAMP, SOPS or policies are qualified on the results page or discussed below.
If you have any questions regarding this report please contact the Pace Project Manager listed on the
cover page.
Pace Analytical Services, LLC (formerly Shealy Environmetal Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 2 of 118

PACE ANALYTICAL SERVICES, LLC
Sample Summary
Terracon Consultants, Inc.
Lot Number: VH19129
Project Name: NC DOT -Mt. Pleasant 2020
Project Number: 701177023
Sample Number
Sample ID
Matrix
Date Sampled
Date Received
001
TP-1
Aqueous
08/18/2020 0955
08/19/2020
002
TIP-2
Aqueous
08/18/20201020
08/19/2020
003
MW-1
Aqueous
08/18/20201315
08/19/2020
004
MW-4R
Aqueous
08/18/20201105
08/19/2020
005
MW-5
Aqueous
08/18/20201205
08/19/2020
006
MW-6R
Aqueous
08/18/20201345
08/19/2020
007
MW-7
Aqueous
08/18/20201135
08/19/2020
008
MW-8
Aqueous
08/18/20201235
08/19/2020
009
MW-9
Aqueous
08/18/20201410
08/19/2020
010
MW-10
Aqueous
08/18/20201445
08/19/2020
011
TB1
Aqueous
08/18/2020
08/19/2020
012
TB2
Aqueous
08/18/2020
08/19/2020
(12 samples)
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 3 of 118

PACE ANALYTICAL SERVICES, LLC
Detection Summary
Terracon Consultants, Inc.
Lot Number: VH19129
Project Name: NC DOT -Mt. Pleasant 2020
Project Number: 701177023
Sample Sample ID
Matrix
Parameter
Method
Result
Q
Units
Page
001
TP-1
Aqueous
Acetone
8260D
4.0
J
ug/L
5
001
TP-1
Aqueous
Methyl tertiary butyl ether
8260D
0.44
J
ug/L
5
001
TP-1
Aqueous
bis(2-Ethylhexyl)phthalate
8270E
3.5
J
ug/L
7
002
TP-2
Aqueous
Caprolactam
8270E
2.3
BJ
ug/L
15
002
TP-2
Aqueous
bis(2-Ethylhexyl)phthalate
8270E
3.5
J
ug/L
15
003
MW-1
Aqueous
Caprolactam
8270E
1.9
BJ
ug/L
23
003
MW-1
Aqueous
bis(2-Ethylhexyl)phthalate
8270E
3.5
J
ug/L
23
004
MW-4R
Aqueous
Caprolactam
8270E
1.9
BJ
ug/L
31
004
MW-4R
Aqueous
bis(2-Ethylhexyl)phthalate
8270E
3.4
J
ug/L
31
005
MW-5
Aqueous
bis(2-Ethylhexyl)phthalate
8270E
3.4
J
ug/L
39
006
MW-6R
Aqueous
Isopropyl benzene
8260D
1.3
ug/L
45
006
MW-6R
Aqueous
Methylcyclohexane
8260D
0.93
J
ug/L
45
006
MW-6R
Aqueous
Acenaphthene
8270E
4.5
ug/L
47
006
MW-6R
Aqueous
Anthracene
8270E
0.56
J
ug/L
47
006
MW-6R
Aqueous
Caprolactam
8270E
1.9
BJ
ug/L
47
006
MW-6R
Aqueous
bis(2-Ethylhexyl)phthalate
8270E
3.5
J
ug/L
47
006
MW-6R
Aqueous
Fluorene
8270E
5.5
ug/L
47
006
MW-6R
Aqueous
Phenanthrene
8270E
2.0
ug/L
48
006
MW-6R
Aqueous
Pyrene
8270E
0.23
J
ug/L
48
006
MW-6R
Aqueous
C11 - C22 Aromatics
MADEP-EPH-
550
ug/L
49
006
MW-6R
Aqueous
C9 - C12 Aliphatics
MADEP-VPH-
90
ug/L
51
006
MW-6R
Aqueous
C9 - C10 Aromatics
MADEP-VPH-
130
ug/L
52
007
MW-7
Aqueous
bis(2-Ethylhexyl)phthalate
8270E
3.4
J
ug/L
55
007
MW-7
Aqueous
C9 - C10 Aromatics
MADEP-VPH-
15
J
ug/L
60
008
MW-8
Aqueous
Methyl tertiary butyl ether
8260D
1.5
ug/L
61
008
MW-8
Aqueous
bis(2-Ethylhexyl)phthalate
8270E
3.5
J
ug/L
63
008
MW-8
Aqueous
C9 - C10 Aromatics
MADEP-VPH-
10
J
ug/L
68
009
MW-9
Aqueous
Acetone
8260D
7.8
J
ug/L
69
009
MW-9
Aqueous
Cyclohexane
8260D
1.0
ug/L
69
009
MW-9
Aqueous
Isopropyl benzene
8260D
1.2
ug/L
69
009
MW-9
Aqueous
Methylcyclohexane
8260D
0.86
J
ug/L
69
009
MW-9
Aqueous
Acenaphthene
8270E
0.77
J
ug/L
71
009
MW-9
Aqueous
Caprolactam
8270E
4.1
BJ
ug/L
71
009
MW-9
Aqueous
bis(2-Ethylhexyl)phthalate
8270E
3.6
J
ug/L
71
009
MW-9
Aqueous
Fluorene
8270E
0.91
ug/L
71
009
MW-9
Aqueous
C11 - C22 Aromatics
MADEP-EPH-
120
ug/L
73
009
MW-9
Aqueous
C5 - C8 Aliphatics
MADEP-VPH-
45
J
ug/L
75
009
MW-9
Aqueous
C9 - C12 Aliphatics
MADEP-VPH-
51
J
ug/L
75
009
MW-9
Aqueous
C9 - C10 Aromatics
MADEP-VPH-
77
ug/L
76
010
MW-10
Aqueous
bis(2-Ethylhexyl)phthalate
8270E
3.4
J
ug/L
79
(40 detections)
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 4 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-001
Description: TP-1 Matrix: Aqueous
Date Sampled:08/18/2020 0955 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
1 5030B 8260D
1 08/25/20201354 JM1
64627
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acetone
67-64-1
8260D
4.0 J
10
4.0
ug/L
1
Benzene
71-43-2
8260D
ND
0.50
0.40
ug/L
1
Bromodichloromethane
75-27-4
8260D
ND
0.50
0.40
ug/L
1
Bromoform
75-25-2
8260D
ND
0.50
0.40
ug/L
1
Bromomethane (Methyl bromide)
74-83-9
8260D
ND
0.50
0.40
ug/L
1
2-Butanone (MEK)
78-93-3
8260D
ND
10
2.0
ug/L
1
Carbon disulfide
75-15-0
8260D
ND
0.50
0.40
ug/L
1
Carbon tetrachloride
56-23-5
8260D
ND
0.50
0.40
ug/L
1
Chlorobenzene
108-90-7
8260D
ND
0.50
0.40
ug/L
1
Chloroethane
75-00-3
8260D
ND
0.50
0.40
ug/L
1
Chloroform
67-66-3
8260D
ND
0.50
0.40
ug/L
1
Chloromethane (Methyl chloride)
74-87-3
8260D
ND
0.50
0.40
ug/L
1
Cyclohexane
110-82-7
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromo-3-chloropropane (DBCP)
96-12-8
8260D
ND
0.50
0.40
ug/L
1
Dibromochloromethane
124-48-1
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromoethane (EDB)
106-93-4
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichlorobenzene
95-50-1
8260D
ND
0.50
0.40
ug/L
1
1,3-Dichlorobenzene
541-73-1
8260D
ND
0.50
0.40
ug/L
1
1,4-Dichlorobenzene
106-46-7
8260D
ND
0.50
0.40
ug/L
1
Dichlorodifluoromethane
75-71-8
8260D
ND
0.50
0.40
ug/L
1
1,1-Dichloroethane
75-34-3
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloroethane
107-06-2
8260D
ND
0.50
0.40
ug/L
1
1, 1 -Dichloroethene
75-35-4
8260D
ND
0.50
0.40
ug/L
1
cis- 1,2-Dichloroethene
156-59-2
8260D
ND
0.50
0.40
ug/L
1
trans-1,2-Dichloroethene
156-60-5
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloropropane
78-87-5
8260D
ND
0.50
0.40
ug/L
1
cis- 1,3-Dichloropropene
10061-01-5
8260D
ND
0.50
0.40
ug/L
1
trans-1,3-Dichloropropene
10061-02-6
8260D
ND
0.50
0.40
ug/L
1
Ethylbenzene
100-41-4
8260D
ND
0.50
0.40
ug/L
1
2-Hexanone
591-78-6
8260D
ND
10
2.0
ug/L
1
Isopropylbenzene
98-82-8
8260D
ND
0.50
0.40
ug/L
1
Methyl acetate
79-20-9
8260D
ND
1.0
0.40
ug/L
1
Methyl tertiary butyl ether (MTBE)
1634-04-4
8260D
0.44 J
0.50
0.40
ug/L
1
4-Methyl-2-pentanone
108-10-1
8260D
ND
10
2.0
ug/L
1
Methylcyclohexane
108-87-2
8260D
ND
5.0
0.40
ug/L
1
Methylene chloride
75-09-2
8260D
ND
0.50
0.40
ug/L
1
Styrene
100-42-5
8260D
ND
0.50
0.41
ug/L
1
1,1,2,2-Tetrachloroethane
79-34-5
8260D
ND
0.50
0.40
ug/L
1
Tetrachloroethene
127-18-4
8260D
ND
0.50
0.40
ug/L
1
Toluene
108-88-3
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloro-1,2,2-Trifluoroethane
76-13-1
8260D
ND
1.0
0.42
ug/L
1
1,2,4-Trichlorobenzene
120-82-1
8260D
ND
0.50
0.40
ug/L
1
1,1,1-Trichloroethane
71-55-6
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloroethane
79-00-5
8260D
ND
0.50
0.40
ug/L
1
LOQ = Limit of Quantitation B = Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 5 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-001
Description: TP-1 Matrix: Aqueous
Date Sampled:08/18/2020 0955 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 5030B 8260D 1 08/25/20201354 JM1 64627
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Trichloroethene
79-01-6
8260D
ND
0.50
0.40
ug/L
1
Trichlorofluoromethane
75-69-4
8260D
ND
0.50
0.40
ug/L
1
Vinyl chloride
75-01-4
8260D
ND
0.50
0.40
ug/L
1
Xylenes (total)
1330-20-7
8260D
ND
1.0
0.40
ug/L
1
Run 1 Acceptance
Surrogate
Q % Recovery Limits
Bromofluorobenzene
1,2-Dichloroethane-d4
Toluene-d8
96 70-130
99 70-130
100 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 6 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-001
Description: TP-1 Matrix: Aqueous
Date Sampled:08/18/2020 0955 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method
Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
2 3520C
8270E
1 08/26/2020 1420 SCD
08/24/2020 1530 64482
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acenaphthene
83-32-9
8270E
ND
0.80
0.20
ug/L
2
Acenaphthylene
208-96-8
8270E
ND
0.80
0.20
ug/L
2
Acetophenone
98-86-2
8270E
ND
4.0
0.50
ug/L
2
Anthracene
120-12-7
8270E
ND
0.80
0.20
ug/L
2
Atrazine
1912-24-9
8270E
ND
4.0
0.50
ug/L
2
Benzaldehyde
100-52-7
8270E
ND
8.0
0.50
ug/L
2
Benzo(a)anthracene
56-55-3
8270E
ND
0.80
0.20
ug/L
2
Benzo(a)pyrene
50-32-8
8270E
ND
0.80
0.20
ug/L
2
Benzo(b)fluoranthene
205-99-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(g,h,i)perylene
191-24-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(k)fluoranthene
207-08-9
8270E
ND
0.80
0.20
ug/L
2
1,1'-Biphenyl
92-52-4
8270E
ND
4.0
0.50
ug/L
2
4-Bromophenyl phenyl ether
101-55-3
8270E
ND
4.0
0.50
ug/L
2
Butyl benzyl phthalate
85-68-7
8270E
ND
4.0
0.50
ug/L
2
Caprolactam
105-60-2
8270E
ND
8.0
1.0
ug/L
2
Carbazole
86-74-8
8270E
ND
4.0
0.50
ug/L
2
bis (2-Chloro-1-methylethyl) ether
108-60-1
8270E
ND
4.0
0.50
ug/L
2
4-Chloro-3-methyl phenol
59-50-7
8270E
ND
4.0
0.50
ug/L
2
4-Chloroaniline
106-47-8
8270E
ND
8.0
0.50
ug/L
2
bis(2-Chloroethoxy)methane
111-91-1
8270E
ND
4.0
0.50
ug/L
2
bis(2-Chloroethyl)ether
111-44-4
8270E
ND
4.0
0.50
ug/L
2
2-Chloronaphthalene
91-58-7
8270E
ND
4.0
0.50
ug/L
2
2-Chlorophenol
95-57-8
8270E
ND
4.0
0.50
ug/L
2
4-Chlorophenyl phenyl ether
7005-72-3
8270E
ND
4.0
0.50
ug/L
2
Chrysene
218-01-9
8270E
ND
0.80
0.20
ug/L
2
Dibenzo(a,h)anthracene
53-70-3
8270E
ND
0.80
0.20
ug/L
2
Dibenzofuran
132-64-9
8270E
ND
4.0
0.50
ug/L
2
3,3'-Dichlorobenzidine
91-94-1
8270E
ND
4.0
1.8
ug/L
2
2,4-Dichlorophenol
120-83-2
8270E
ND
8.0
1.0
ug/L
2
Diethylphthalate
84-66-2
8270E
ND
4.0
0.50
ug/L
2
Dimethyl phthalate
131-11-3
8270E
ND
4.0
0.50
ug/L
2
2,4-Dimethylphenol
105-67-9
8270E
ND
4.0
1.0
ug/L
2
Di-n-butyl phthalate
84-74-2
8270E
ND
4.0
0.50
ug/L
2
4,6-Dinitro-2-methylphenol
534-52-1
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrophenol
51-28-5
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrotoluene
121-14-2
8270E
ND
8.0
0.50
ug/L
2
2,6-Dinitrotoluene
606-20-2
8270E
ND
8.0
0.50
ug/L
2
Di-n-octylphthalate
117-84-0
8270E
ND
4.0
0.50
ug/L
2
bis(2-Ethylhexyl)phthalate
117-81-7
8270E
3.5 J
4.0
0.50
ug/L
2
Fluoranthene
206-44-0
8270E
ND
0.80
0.20
ug/L
2
Fluorene
86-73-7
8270E
ND
0.80
0.20
ug/L
2
Hexachlorobenzene
118-74-1
8270E
ND
4.0
0.50
ug/L
2
Hexachlorobutadiene
87-68-3
8270E
ND
4.0
0.50
ug/L
2
Hexachlorocyclopentadiene
77-47-4
8270E
ND
20
2.0
ug/L
2
LOQ = Limit of Quantitation B =
Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N =
Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W =
Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 7 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-001
Description: TP-1 Matrix: Aqueous
Date Sampled:08/18/2020 0955 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 3520C 8270E 1 08/26/2020 1420 SCD 08/24/2020 1530 64482
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Hexachloroethane
67-72-1
8270E
ND
4.0
1.0
ug/L
2
Indeno(1,2,3-c,d)pyrene
193-39-5
8270E
ND
0.80
0.20
ug/L
2
Isophorone
78-59-1
8270E
ND
4.0
0.50
ug/L
2
2-Methylnaphthalene
91-57-6
8270E
ND
0.80
0.20
ug/L
2
2-Methylphenol
95-48-7
8270E
ND
4.0
1.0
ug/L
2
3+4-Methylphenol
106-44-5
8270E
ND
4.0
1.5
ug/L
2
Naphthalene
91-20-3
8270E
ND
0.80
0.20
ug/L
2
2-Nitroaniline
88-74-4
8270E
ND
8.0
0.50
ug/L
2
3-Nitroaniline
99-09-2
8270E
ND
8.0
1.0
ug/L
2
4-Nitroaniline
100-01-6
8270E
ND
8.0
1.5
ug/L
2
Nitrobenzene
98-95-3
8270E
ND
4.0
1.5
ug/L
2
2-Nitrophenol
88-75-5
8270E
ND
4.0
1.0
ug/L
2
4-Nitrophenol
100-02-7
8270E
ND
20
2.0
ug/L
2
N-Nitrosodi-n-propylamine
621-64-7
8270E
ND
4.0
0.50
ug/L
2
N-Nitrosodiphenylamine (Diphenylamine)
86-30-6
8270E
ND
4.0
0.50
ug/L
2
Pentachlorophenol
87-86-5
8270E
ND
20
2.0
ug/L
2
Phenanthrene
85-01-8
8270E
ND
0.80
0.20
ug/L
2
Phenol
108-95-2
8270E
ND
4.0
0.50
ug/L
2
Pyrene
129-00-0
8270E
ND
0.80
0.20
ug/L
2
2,4,5-Trichlorophenol
95-95-4
8270E
ND
4.0
0.50
ug/L
2
2,4,6-Trichlorophenol
88-06-2
8270E
ND
4.0
0.50
ug/L
2
Run 2 Acceptance
Surrogate
Q % Recovery Limits
2-Fluorobiphenyl
84
37-129
2-Fluorophenol
55
24-127
Nitrobenzene-d5
82
38-127
Phenol-d5
67
28-128
Terphenyl-d14
84
10-148
2,4,6-Tribromophenol
74
35-144
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 8 of 118

MADEP EPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-001
Description: TP-1 Matrix: Aqueous
Date Sampled:08/18/2020 0955 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 09/02/2020 1248 JJG 08/21/2020 0916 64259
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C11 - C22 Aromatics MADEP-EPH-04 ND 95 95 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
o - Terphenyl (aromatic)
2-Fluorobiphenyl (fractionation 1)
2-Bromonaphthalene (fractionation 2)
67 40-140
79 40-140
74 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 9 of 118

MADEP EPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-001
Description: TP-1 Matrix: Aqueous
Date Sampled:08/18/2020 0955 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 09/02/2020 1147 JJG 08/21/2020 0916 64258
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C18 Aliphatics MADEP-EPH-04 ND 95 95 ug/L 1
C19 - C36 Aliphatics MADEP-EPH-04 ND 95 95 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
1-Chloro-octadecane (aliphatic)
56 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 10 of 118

MADEP VPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-001
Description: TP-1 Matrix: Aqueous
Date Sampled:08/18/2020 0955 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201527 ECB 64343
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C5 - C8 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
C9 - C12 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (FID)
105 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 11 of 118

MADEP VPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-001
Description: TP-1 Matrix: Aqueous
Date Sampled:08/18/2020 0955 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201527 ECB 64344
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C10 Aromatics MADEP-VPH-18- ND 25 5.0 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (PID)
106 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 12 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-002
Description: TP-2 Matrix: Aqueous
Date Sampled:08/18/2020 1020 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
1 5030B 8260D
1 08/25/20201416 JM1
64627
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acetone
67-64-1
8260D
ND
10
4.0
ug/L
1
Benzene
71-43-2
8260D
ND
0.50
0.40
ug/L
1
Bromodichloromethane
75-27-4
8260D
ND
0.50
0.40
ug/L
1
Bromoform
75-25-2
8260D
ND
0.50
0.40
ug/L
1
Bromomethane (Methyl bromide)
74-83-9
8260D
ND
0.50
0.40
ug/L
1
2-Butanone (MEK)
78-93-3
8260D
ND
10
2.0
ug/L
1
Carbon disulfide
75-15-0
8260D
ND
0.50
0.40
ug/L
1
Carbon tetrachloride
56-23-5
8260D
ND
0.50
0.40
ug/L
1
Chlorobenzene
108-90-7
8260D
ND
0.50
0.40
ug/L
1
Chloroethane
75-00-3
8260D
ND
0.50
0.40
ug/L
1
Chloroform
67-66-3
8260D
ND
0.50
0.40
ug/L
1
Chloromethane (Methyl chloride)
74-87-3
8260D
ND
0.50
0.40
ug/L
1
Cyclohexane
110-82-7
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromo-3-chloropropane (DBCP)
96-12-8
8260D
ND
0.50
0.40
ug/L
1
Dibromochloromethane
124-48-1
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromoethane (EDB)
106-93-4
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichlorobenzene
95-50-1
8260D
ND
0.50
0.40
ug/L
1
1,3-Dichlorobenzene
541-73-1
8260D
ND
0.50
0.40
ug/L
1
1,4-Dichlorobenzene
106-46-7
8260D
ND
0.50
0.40
ug/L
1
Dichlorodifluoromethane
75-71-8
8260D
ND
0.50
0.40
ug/L
1
1,1-Dichloroethane
75-34-3
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloroethane
107-06-2
8260D
ND
0.50
0.40
ug/L
1
1, 1 -Dichloroethene
75-35-4
8260D
ND
0.50
0.40
ug/L
1
cis- 1,2-Dichloroethene
156-59-2
8260D
ND
0.50
0.40
ug/L
1
trans-1,2-Dichloroethene
156-60-5
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloropropane
78-87-5
8260D
ND
0.50
0.40
ug/L
1
cis- 1,3-Dichloropropene
10061-01-5
8260D
ND
0.50
0.40
ug/L
1
trans-1,3-Dichloropropene
10061-02-6
8260D
ND
0.50
0.40
ug/L
1
Ethylbenzene
100-41-4
8260D
ND
0.50
0.40
ug/L
1
2-Hexanone
591-78-6
8260D
ND
10
2.0
ug/L
1
Isopropylbenzene
98-82-8
8260D
ND
0.50
0.40
ug/L
1
Methyl acetate
79-20-9
8260D
ND
1.0
0.40
ug/L
1
Methyl tertiary butyl ether (MTBE)
1634-04-4
8260D
ND
0.50
0.40
ug/L
1
4-Methyl-2-pentanone
108-10-1
8260D
ND
10
2.0
ug/L
1
Methylcyclohexane
108-87-2
8260D
ND
5.0
0.40
ug/L
1
Methylene chloride
75-09-2
8260D
ND
0.50
0.40
ug/L
1
Styrene
100-42-5
8260D
ND
0.50
0.41
ug/L
1
1,1,2,2-Tetrachloroethane
79-34-5
8260D
ND
0.50
0.40
ug/L
1
Tetrachloroethene
127-18-4
8260D
ND
0.50
0.40
ug/L
1
Toluene
108-88-3
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloro-1,2,2-Trifluoroethane
76-13-1
8260D
ND
1.0
0.42
ug/L
1
1,2,4-Trichlorobenzene
120-82-1
8260D
ND
0.50
0.40
ug/L
1
1,1,1-Trichloroethane
71-55-6
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloroethane
79-00-5
8260D
ND
0.50
0.40
ug/L
1
LOQ = Limit of Quantitation B = Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 13 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-002
Description: TP-2 Matrix: Aqueous
Date Sampled:08/18/2020 1020 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 5030B 8260D 1 08/25/20201416 JM1 64627
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Trichloroethene
79-01-6
8260D
ND
0.50
0.40
ug/L
1
Trichlorofluoromethane
75-69-4
8260D
ND
0.50
0.40
ug/L
1
Vinyl chloride
75-01-4
8260D
ND
0.50
0.40
ug/L
1
Xylenes (total)
1330-20-7
8260D
ND
1.0
0.40
ug/L
1
Run 1 Acceptance
Surrogate
Q % Recovery Limits
Bromofluorobenzene
1,2-Dichloroethane-d4
Toluene-d8
100 70-130
100 70-130
101 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 14 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-002
Description: TP-2 Matrix: Aqueous
Date Sampled:08/18/2020 1020 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method
Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
2 3520C
8270E
1 08/26/2020 1444 SCD
08/24/2020 1530 64482
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acenaphthene
83-32-9
8270E
ND
0.80
0.20
ug/L
2
Acenaphthylene
208-96-8
8270E
ND
0.80
0.20
ug/L
2
Acetophenone
98-86-2
8270E
ND
4.0
0.50
ug/L
2
Anthracene
120-12-7
8270E
ND
0.80
0.20
ug/L
2
Atrazine
1912-24-9
8270E
ND
4.0
0.50
ug/L
2
Benzaldehyde
100-52-7
8270E
ND
8.0
0.50
ug/L
2
Benzo(a)anthracene
56-55-3
8270E
ND
0.80
0.20
ug/L
2
Benzo(a)pyrene
50-32-8
8270E
ND
0.80
0.20
ug/L
2
Benzo(b)fluoranthene
205-99-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(g,h,i)perylene
191-24-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(k)fluoranthene
207-08-9
8270E
ND
0.80
0.20
ug/L
2
1,1'-Biphenyl
92-52-4
8270E
ND
4.0
0.50
ug/L
2
4-Bromophenyl phenyl ether
101-55-3
8270E
ND
4.0
0.50
ug/L
2
Butyl benzyl phthalate
85-68-7
8270E
ND
4.0
0.50
ug/L
2
Caprolactam
105-60-2
8270E
2.3 BJ
8.0
1.0
ug/L
2
Carbazole
86-74-8
8270E
ND
4.0
0.50
ug/L
2
bis (2-Chloro-1-methylethyl) ether
108-60-1
8270E
ND
4.0
0.50
ug/L
2
4-Chloro-3-methyl phenol
59-50-7
8270E
ND
4.0
0.50
ug/L
2
4-Chloroaniline
106-47-8
8270E
ND
8.0
0.50
ug/L
2
bis(2-Chloroethoxy)methane
111-91-1
8270E
ND
4.0
0.50
ug/L
2
bis(2-Chloroethyl)ether
111-44-4
8270E
ND
4.0
0.50
ug/L
2
2-Chloronaphthalene
91-58-7
8270E
ND
4.0
0.50
ug/L
2
2-Chlorophenol
95-57-8
8270E
ND
4.0
0.50
ug/L
2
4-Chlorophenyl phenyl ether
7005-72-3
8270E
ND
4.0
0.50
ug/L
2
Chrysene
218-01-9
8270E
ND
0.80
0.20
ug/L
2
Dibenzo(a,h)anthracene
53-70-3
8270E
ND
0.80
0.20
ug/L
2
Dibenzofuran
132-64-9
8270E
ND
4.0
0.50
ug/L
2
3,3'-Dichlorobenzidine
91-94-1
8270E
ND
4.0
1.8
ug/L
2
2,4-Dichlorophenol
120-83-2
8270E
ND
8.0
1.0
ug/L
2
Diethylphthalate
84-66-2
8270E
ND
4.0
0.50
ug/L
2
Dimethyl phthalate
131-11-3
8270E
ND
4.0
0.50
ug/L
2
2,4-Dimethylphenol
105-67-9
8270E
ND
4.0
1.0
ug/L
2
Di-n-butyl phthalate
84-74-2
8270E
ND
4.0
0.50
ug/L
2
4,6-Dinitro-2-methylphenol
534-52-1
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrophenol
51-28-5
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrotoluene
121-14-2
8270E
ND
8.0
0.50
ug/L
2
2,6-Dinitrotoluene
606-20-2
8270E
ND
8.0
0.50
ug/L
2
Di-n-octylphthalate
117-84-0
8270E
ND
4.0
0.50
ug/L
2
bis(2-Ethylhexyl)phthalate
117-81-7
8270E
3.5 J
4.0
0.50
ug/L
2
Fluoranthene
206-44-0
8270E
ND
0.80
0.20
ug/L
2
Fluorene
86-73-7
8270E
ND
0.80
0.20
ug/L
2
Hexachlorobenzene
118-74-1
8270E
ND
4.0
0.50
ug/L
2
Hexachlorobutadiene
87-68-3
8270E
ND
4.0
0.50
ug/L
2
Hexachlorocyclopentadiene
77-47-4
8270E
ND
20
2.0
ug/L
2
LOQ = Limit of Quantitation B =
Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N =
Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W =
Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 15 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-002
Description: TP-2 Matrix: Aqueous
Date Sampled:08/18/2020 1020 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 3520C 8270E 1 08/26/2020 1444 SCD 08/24/2020 1530 64482
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Hexachloroethane
67-72-1
8270E
ND
4.0
1.0
ug/L
2
Indeno(1,2,3-c,d)pyrene
193-39-5
8270E
ND
0.80
0.20
ug/L
2
Isophorone
78-59-1
8270E
ND
4.0
0.50
ug/L
2
2-Methylnaphthalene
91-57-6
8270E
ND
0.80
0.20
ug/L
2
2-Methylphenol
95-48-7
8270E
ND
4.0
1.0
ug/L
2
3+4-Methylphenol
106-44-5
8270E
ND
4.0
1.5
ug/L
2
Naphthalene
91-20-3
8270E
ND
0.80
0.20
ug/L
2
2-Nitroaniline
88-74-4
8270E
ND
8.0
0.50
ug/L
2
3-Nitroaniline
99-09-2
8270E
ND
8.0
1.0
ug/L
2
4-Nitroaniline
100-01-6
8270E
ND
8.0
1.5
ug/L
2
Nitrobenzene
98-95-3
8270E
ND
4.0
1.5
ug/L
2
2-Nitrophenol
88-75-5
8270E
ND
4.0
1.0
ug/L
2
4-Nitrophenol
100-02-7
8270E
ND
20
2.0
ug/L
2
N-Nitrosodi-n-propylamine
621-64-7
8270E
ND
4.0
0.50
ug/L
2
N-Nitrosodiphenylamine (Diphenylamine)
86-30-6
8270E
ND
4.0
0.50
ug/L
2
Pentachlorophenol
87-86-5
8270E
ND
20
2.0
ug/L
2
Phenanthrene
85-01-8
8270E
ND
0.80
0.20
ug/L
2
Phenol
108-95-2
8270E
ND
4.0
0.50
ug/L
2
Pyrene
129-00-0
8270E
ND
0.80
0.20
ug/L
2
2,4,5-Trichlorophenol
95-95-4
8270E
ND
4.0
0.50
ug/L
2
2,4,6-Trichlorophenol
88-06-2
8270E
ND
4.0
0.50
ug/L
2
Run 2 Acceptance
Surrogate
Q % Recovery Limits
2-Fluorobiphenyl
79
37-129
2-Fluorophenol
47
24-127
Nitrobenzene-d5
79
38-127
Phenol-d5
71
28-128
Terphenyl-d14
81
10-148
2,4,6-Tribromophenol
70
35-144
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 16 of 118

MADEP EPH (aliphatics) - Unfractionated
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-002
Description: TP-2 Matrix: Aqueous
Date Sampled:08/18/2020 1020 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution
Analysis Date Analyst
Prep Date
Batch
1 MADEP-EPH- MADEP-EPH-04 1
08/30/2020 2241 JJG
08/21/2020 0916
64251
CAS Analytical
Parameter Number Method
Result Q
LOQ DL Units Run
C19 - C36 Aliphatics - Unfractionated
MADEP-EPH-04
ND
100 100 ug/L 1
C9 - C18 Aliphatics - Unfractionated
MADEP-EPH-04
ND
100 100 ug/L 1
Run 1
Acceptance
Surrogate Q % Recovery
Limits
1-Chloro-octadecane (aliphatic) - Unfractionated 73
40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 17 of 118

MADEP EPH (aromatics) - Unfractionated
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-002
Description: TP-2 Matrix: Aqueous
Date Sampled:08/18/2020 1020 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 08/30/2020 2241 JJG 08/21/2020 0916 64252
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C11 - C22 Aromatics - Unfractionated MADEP-EPH-04 ND 100 100 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
o - Terphenyl (aromatic) - Unfractionated 97 40-140
2-Fluorobiphenyl (fractionation 1) 136 40-140
2-Bromonaphthalene (fractionation 2) 123 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 18 of 118

MADEP VPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-002
Description: TP-2 Matrix: Aqueous
Date Sampled:08/18/2020 1020 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201556 ECB 64343
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C5 - C8 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
C9 - C12 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (FID)
100 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 19 of 118

MADEP VPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-002
Description: TP-2 Matrix: Aqueous
Date Sampled:08/18/2020 1020 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201556 ECB 64344
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C10 Aromatics MADEP-VPH-18- ND 25 5.0 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (PID)
102 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 20 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-003
Description: MW-1 Matrix: Aqueous
Date Sampled:08/18/2020 1315 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
1 5030B 8260D
1 08/25/20201438 JM1
64627
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acetone
67-64-1
8260D
ND
10
4.0
ug/L
1
Benzene
71-43-2
8260D
ND
0.50
0.40
ug/L
1
Bromodichloromethane
75-27-4
8260D
ND
0.50
0.40
ug/L
1
Bromoform
75-25-2
8260D
ND
0.50
0.40
ug/L
1
Bromomethane (Methyl bromide)
74-83-9
8260D
ND
0.50
0.40
ug/L
1
2-Butanone (MEK)
78-93-3
8260D
ND
10
2.0
ug/L
1
Carbon disulfide
75-15-0
8260D
ND
0.50
0.40
ug/L
1
Carbon tetrachloride
56-23-5
8260D
ND
0.50
0.40
ug/L
1
Chlorobenzene
108-90-7
8260D
ND
0.50
0.40
ug/L
1
Chloroethane
75-00-3
8260D
ND
0.50
0.40
ug/L
1
Chloroform
67-66-3
8260D
ND
0.50
0.40
ug/L
1
Chloromethane (Methyl chloride)
74-87-3
8260D
ND
0.50
0.40
ug/L
1
Cyclohexane
110-82-7
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromo-3-chloropropane (DBCP)
96-12-8
8260D
ND
0.50
0.40
ug/L
1
Dibromochloromethane
124-48-1
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromoethane (EDB)
106-93-4
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichlorobenzene
95-50-1
8260D
ND
0.50
0.40
ug/L
1
1,3-Dichlorobenzene
541-73-1
8260D
ND
0.50
0.40
ug/L
1
1,4-Dichlorobenzene
106-46-7
8260D
ND
0.50
0.40
ug/L
1
Dichlorodifluoromethane
75-71-8
8260D
ND
0.50
0.40
ug/L
1
1,1-Dichloroethane
75-34-3
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloroethane
107-06-2
8260D
ND
0.50
0.40
ug/L
1
1, 1 -Dichloroethene
75-35-4
8260D
ND
0.50
0.40
ug/L
1
cis- 1,2-Dichloroethene
156-59-2
8260D
ND
0.50
0.40
ug/L
1
trans-1,2-Dichloroethene
156-60-5
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloropropane
78-87-5
8260D
ND
0.50
0.40
ug/L
1
cis- 1,3-Dichloropropene
10061-01-5
8260D
ND
0.50
0.40
ug/L
1
trans-1,3-Dichloropropene
10061-02-6
8260D
ND
0.50
0.40
ug/L
1
Ethylbenzene
100-41-4
8260D
ND
0.50
0.40
ug/L
1
2-Hexanone
591-78-6
8260D
ND
10
2.0
ug/L
1
Isopropylbenzene
98-82-8
8260D
ND
0.50
0.40
ug/L
1
Methyl acetate
79-20-9
8260D
ND
1.0
0.40
ug/L
1
Methyl tertiary butyl ether (MTBE)
1634-04-4
8260D
ND
0.50
0.40
ug/L
1
4-Methyl-2-pentanone
108-10-1
8260D
ND
10
2.0
ug/L
1
Methylcyclohexane
108-87-2
8260D
ND
5.0
0.40
ug/L
1
Methylene chloride
75-09-2
8260D
ND
0.50
0.40
ug/L
1
Styrene
100-42-5
8260D
ND
0.50
0.41
ug/L
1
1,1,2,2-Tetrachloroethane
79-34-5
8260D
ND
0.50
0.40
ug/L
1
Tetrachloroethene
127-18-4
8260D
ND
0.50
0.40
ug/L
1
Toluene
108-88-3
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloro-1,2,2-Trifluoroethane
76-13-1
8260D
ND
1.0
0.42
ug/L
1
1,2,4-Trichlorobenzene
120-82-1
8260D
ND
0.50
0.40
ug/L
1
1,1,1-Trichloroethane
71-55-6
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloroethane
79-00-5
8260D
ND
0.50
0.40
ug/L
1
LOQ = Limit of Quantitation B = Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 21 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-003
Description: MW-1 Matrix: Aqueous
Date Sampled:08/18/2020 1315 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 5030B 8260D 1 08/25/20201438 JM1 64627
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Trichloroethene
79-01-6
8260D
ND
0.50
0.40
ug/L
1
Trichlorofluoromethane
75-69-4
8260D
ND
0.50
0.40
ug/L
1
Vinyl chloride
75-01-4
8260D
ND
0.50
0.40
ug/L
1
Xylenes (total)
1330-20-7
8260D
ND
1.0
0.40
ug/L
1
Run 1 Acceptance
Surrogate
Q % Recovery Limits
Bromofluorobenzene
1,2-Dichloroethane-d4
Toluene-d8
99 70-130
100 70-130
101 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 22 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-003
Description: MW-1 Matrix: Aqueous
Date Sampled:08/18/2020 1315 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method
Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
2 3520C
8270E
1 08/26/2020 1509 SCD
08/24/2020 1530 64482
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acenaphthene
83-32-9
8270E
ND
0.80
0.20
ug/L
2
Acenaphthylene
208-96-8
8270E
ND
0.80
0.20
ug/L
2
Acetophenone
98-86-2
8270E
ND
4.0
0.50
ug/L
2
Anthracene
120-12-7
8270E
ND
0.80
0.20
ug/L
2
Atrazine
1912-24-9
8270E
ND
4.0
0.50
ug/L
2
Benzaldehyde
100-52-7
8270E
ND
8.0
0.50
ug/L
2
Benzo(a)anthracene
56-55-3
8270E
ND
0.80
0.20
ug/L
2
Benzo(a)pyrene
50-32-8
8270E
ND
0.80
0.20
ug/L
2
Benzo(b)fluoranthene
205-99-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(g,h,i)perylene
191-24-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(k)fluoranthene
207-08-9
8270E
ND
0.80
0.20
ug/L
2
1,1'-Biphenyl
92-52-4
8270E
ND
4.0
0.50
ug/L
2
4-Bromophenyl phenyl ether
101-55-3
8270E
ND
4.0
0.50
ug/L
2
Butyl benzyl phthalate
85-68-7
8270E
ND
4.0
0.50
ug/L
2
Caprolactam
105-60-2
8270E
1.9 BJ
8.0
1.0
ug/L
2
Carbazole
86-74-8
8270E
ND
4.0
0.50
ug/L
2
bis (2-Chloro-1-methylethyl) ether
108-60-1
8270E
ND
4.0
0.50
ug/L
2
4-Chloro-3-methyl phenol
59-50-7
8270E
ND
4.0
0.50
ug/L
2
4-Chloroaniline
106-47-8
8270E
ND
8.0
0.50
ug/L
2
bis(2-Chloroethoxy)methane
111-91-1
8270E
ND
4.0
0.50
ug/L
2
bis(2-Chloroethyl)ether
111-44-4
8270E
ND
4.0
0.50
ug/L
2
2-Chloronaphthalene
91-58-7
8270E
ND
4.0
0.50
ug/L
2
2-Chlorophenol
95-57-8
8270E
ND
4.0
0.50
ug/L
2
4-Chlorophenyl phenyl ether
7005-72-3
8270E
ND
4.0
0.50
ug/L
2
Chrysene
218-01-9
8270E
ND
0.80
0.20
ug/L
2
Dibenzo(a,h)anthracene
53-70-3
8270E
ND
0.80
0.20
ug/L
2
Dibenzofuran
132-64-9
8270E
ND
4.0
0.50
ug/L
2
3,3'-Dichlorobenzidine
91-94-1
8270E
ND
4.0
1.8
ug/L
2
2,4-Dichlorophenol
120-83-2
8270E
ND
8.0
1.0
ug/L
2
Diethylphthalate
84-66-2
8270E
ND
4.0
0.50
ug/L
2
Dimethyl phthalate
131-11-3
8270E
ND
4.0
0.50
ug/L
2
2,4-Dimethylphenol
105-67-9
8270E
ND
4.0
1.0
ug/L
2
Di-n-butyl phthalate
84-74-2
8270E
ND
4.0
0.50
ug/L
2
4,6-Dinitro-2-methylphenol
534-52-1
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrophenol
51-28-5
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrotoluene
121-14-2
8270E
ND
8.0
0.50
ug/L
2
2,6-Dinitrotoluene
606-20-2
8270E
ND
8.0
0.50
ug/L
2
Di-n-octylphthalate
117-84-0
8270E
ND
4.0
0.50
ug/L
2
bis(2-Ethylhexyl)phthalate
117-81-7
8270E
3.5 J
4.0
0.50
ug/L
2
Fluoranthene
206-44-0
8270E
ND
0.80
0.20
ug/L
2
Fluorene
86-73-7
8270E
ND
0.80
0.20
ug/L
2
Hexachlorobenzene
118-74-1
8270E
ND
4.0
0.50
ug/L
2
Hexachlorobutadiene
87-68-3
8270E
ND
4.0
0.50
ug/L
2
Hexachlorocyclopentadiene
77-47-4
8270E
ND
20
2.0
ug/L
2
LOQ = Limit of Quantitation B =
Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N =
Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W =
Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 23 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-003
Description: MW-1 Matrix: Aqueous
Date Sampled:08/18/2020 1315 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 3520C 8270E 1 08/26/2020 1509 SCD 08/24/2020 1530 64482
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Hexachloroethane
67-72-1
8270E
ND
4.0
1.0
ug/L
2
Indeno(1,2,3-c,d)pyrene
193-39-5
8270E
ND
0.80
0.20
ug/L
2
Isophorone
78-59-1
8270E
ND
4.0
0.50
ug/L
2
2-Methylnaphthalene
91-57-6
8270E
ND
0.80
0.20
ug/L
2
2-Methylphenol
95-48-7
8270E
ND
4.0
1.0
ug/L
2
3+4-Methylphenol
106-44-5
8270E
ND
4.0
1.5
ug/L
2
Naphthalene
91-20-3
8270E
ND
0.80
0.20
ug/L
2
2-Nitroaniline
88-74-4
8270E
ND
8.0
0.50
ug/L
2
3-Nitroaniline
99-09-2
8270E
ND
8.0
1.0
ug/L
2
4-Nitroaniline
100-01-6
8270E
ND
8.0
1.5
ug/L
2
Nitrobenzene
98-95-3
8270E
ND
4.0
1.5
ug/L
2
2-Nitrophenol
88-75-5
8270E
ND
4.0
1.0
ug/L
2
4-Nitrophenol
100-02-7
8270E
ND
20
2.0
ug/L
2
N-Nitrosodi-n-propylamine
621-64-7
8270E
ND
4.0
0.50
ug/L
2
N-Nitrosodiphenylamine (Diphenylamine)
86-30-6
8270E
ND
4.0
0.50
ug/L
2
Pentachlorophenol
87-86-5
8270E
ND
20
2.0
ug/L
2
Phenanthrene
85-01-8
8270E
ND
0.80
0.20
ug/L
2
Phenol
108-95-2
8270E
ND
4.0
0.50
ug/L
2
Pyrene
129-00-0
8270E
ND
0.80
0.20
ug/L
2
2,4,5-Trichlorophenol
95-95-4
8270E
ND
4.0
0.50
ug/L
2
2,4,6-Trichlorophenol
88-06-2
8270E
ND
4.0
0.50
ug/L
2
Run 2 Acceptance
Surrogate
Q % Recovery Limits
2-Fluorobiphenyl
79
37-129
2-Fluorophenol
51
24-127
Nitrobenzene-d5
76
38-127
Phenol-d5
66
28-128
Terphenyl-d14
79
10-148
2,4,6-Tribromophenol
68
35-144
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 24 of 118

MADEP EPH (aliphatics) - Unfractionated
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-003
Description: MW-1 Matrix: Aqueous
Date Sampled:08/18/2020 1315 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution
Analysis Date Analyst
Prep Date
Batch
1 MADEP-EPH- MADEP-EPH-04 1
08/30/2020 2311 JJG
08/21/2020 0916
64251
CAS Analytical
Parameter Number Method
Result Q
LOQ DL Units Run
C19 - C36 Aliphatics - Unfractionated
MADEP-EPH-04
ND
95 95 ug/L 1
C9 - C18 Aliphatics - Unfractionated
MADEP-EPH-04
ND
95 95 ug/L 1
Run 1
Acceptance
Surrogate Q % Recovery
Limits
1-Chloro-octadecane (aliphatic) - Unfractionated 85
40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 25 of 118

MADEP EPH (aromatics) - Unfractionated
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-003
Description: MW-1 Matrix: Aqueous
Date Sampled:08/18/2020 1315 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 08/30/2020 2311 JJG 08/21/2020 0916 64252
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C11 - C22 Aromatics - Unfractionated MADEP-EPH-04 ND 95 95 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
o - Terphenyl (aromatic) - Unfractionated 106 40-140
2-Fluorobiphenyl (fractionation 1) 135 40-140
2-Bromonaphthalene (fractionation 2) 120 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 26 of 118

MADEP VPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-003
Description: MW-1 Matrix: Aqueous
Date Sampled:08/18/2020 1315 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201624 ECB 64343
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C5 - C8 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
C9 - C12 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (FID)
103 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 27 of 118

MADEP VPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-003
Description: MW-1 Matrix: Aqueous
Date Sampled:08/18/2020 1315 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201624 ECB 64344
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C10 Aromatics MADEP-VPH-18- ND 25 5.0 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (PID)
103 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 28 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-004
Description: MW-4R Matrix: Aqueous
Date Sampled:08/18/2020 1105 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
1 5030B 8260D
1 08/25/20201500 JM1
64627
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acetone
67-64-1
8260D
ND
10
4.0
ug/L
1
Benzene
71-43-2
8260D
ND
0.50
0.40
ug/L
1
Bromodichloromethane
75-27-4
8260D
ND
0.50
0.40
ug/L
1
Bromoform
75-25-2
8260D
ND
0.50
0.40
ug/L
1
Bromomethane (Methyl bromide)
74-83-9
8260D
ND
0.50
0.40
ug/L
1
2-Butanone (MEK)
78-93-3
8260D
ND
10
2.0
ug/L
1
Carbon disulfide
75-15-0
8260D
ND
0.50
0.40
ug/L
1
Carbon tetrachloride
56-23-5
8260D
ND
0.50
0.40
ug/L
1
Chlorobenzene
108-90-7
8260D
ND
0.50
0.40
ug/L
1
Chloroethane
75-00-3
8260D
ND
0.50
0.40
ug/L
1
Chloroform
67-66-3
8260D
ND
0.50
0.40
ug/L
1
Chloromethane (Methyl chloride)
74-87-3
8260D
ND
0.50
0.40
ug/L
1
Cyclohexane
110-82-7
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromo-3-chloropropane (DBCP)
96-12-8
8260D
ND
0.50
0.40
ug/L
1
Dibromochloromethane
124-48-1
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromoethane (EDB)
106-93-4
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichlorobenzene
95-50-1
8260D
ND
0.50
0.40
ug/L
1
1,3-Dichlorobenzene
541-73-1
8260D
ND
0.50
0.40
ug/L
1
1,4-Dichlorobenzene
106-46-7
8260D
ND
0.50
0.40
ug/L
1
Dichlorodifluoromethane
75-71-8
8260D
ND
0.50
0.40
ug/L
1
1,1-Dichloroethane
75-34-3
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloroethane
107-06-2
8260D
ND
0.50
0.40
ug/L
1
1, 1 -Dichloroethene
75-35-4
8260D
ND
0.50
0.40
ug/L
1
cis- 1,2-Dichloroethene
156-59-2
8260D
ND
0.50
0.40
ug/L
1
trans-1,2-Dichloroethene
156-60-5
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloropropane
78-87-5
8260D
ND
0.50
0.40
ug/L
1
cis- 1,3-Dichloropropene
10061-01-5
8260D
ND
0.50
0.40
ug/L
1
trans-1,3-Dichloropropene
10061-02-6
8260D
ND
0.50
0.40
ug/L
1
Ethylbenzene
100-41-4
8260D
ND
0.50
0.40
ug/L
1
2-Hexanone
591-78-6
8260D
ND
10
2.0
ug/L
1
Isopropylbenzene
98-82-8
8260D
ND
0.50
0.40
ug/L
1
Methyl acetate
79-20-9
8260D
ND
1.0
0.40
ug/L
1
Methyl tertiary butyl ether (MTBE)
1634-04-4
8260D
ND
0.50
0.40
ug/L
1
4-Methyl-2-pentanone
108-10-1
8260D
ND
10
2.0
ug/L
1
Methylcyclohexane
108-87-2
8260D
ND
5.0
0.40
ug/L
1
Methylene chloride
75-09-2
8260D
ND
0.50
0.40
ug/L
1
Styrene
100-42-5
8260D
ND
0.50
0.41
ug/L
1
1,1,2,2-Tetrachloroethane
79-34-5
8260D
ND
0.50
0.40
ug/L
1
Tetrachloroethene
127-18-4
8260D
ND
0.50
0.40
ug/L
1
Toluene
108-88-3
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloro-1,2,2-Trifluoroethane
76-13-1
8260D
ND
1.0
0.42
ug/L
1
1,2,4-Trichlorobenzene
120-82-1
8260D
ND
0.50
0.40
ug/L
1
1,1,1-Trichloroethane
71-55-6
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloroethane
79-00-5
8260D
ND
0.50
0.40
ug/L
1
LOQ = Limit of Quantitation B = Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 29 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-004
Description: MW-4R Matrix: Aqueous
Date Sampled:08/18/2020 1105 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 5030B 8260D 1 08/25/20201500 JM1 64627
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Trichloroethene
79-01-6
8260D
ND
0.50
0.40
ug/L
1
Trichlorofluoromethane
75-69-4
8260D
ND
0.50
0.40
ug/L
1
Vinyl chloride
75-01-4
8260D
ND
0.50
0.40
ug/L
1
Xylenes (total)
1330-20-7
8260D
ND
1.0
0.40
ug/L
1
Run 1 Acceptance
Surrogate
Q % Recovery Limits
Bromofluorobenzene
1,2-Dichloroethane-d4
Toluene-d8
99 70-130
102 70-130
102 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 30 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-004
Description: MW-4R Matrix: Aqueous
Date Sampled:08/18/2020 1105 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method
Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
2 3520C
8270E
1 08/26/2020 1534 SCD
08/24/2020 1530 64482
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acenaphthene
83-32-9
8270E
ND
0.80
0.20
ug/L
2
Acenaphthylene
208-96-8
8270E
ND
0.80
0.20
ug/L
2
Acetophenone
98-86-2
8270E
ND
4.0
0.50
ug/L
2
Anthracene
120-12-7
8270E
ND
0.80
0.20
ug/L
2
Atrazine
1912-24-9
8270E
ND
4.0
0.50
ug/L
2
Benzaldehyde
100-52-7
8270E
ND
8.0
0.50
ug/L
2
Benzo(a)anthracene
56-55-3
8270E
ND
0.80
0.20
ug/L
2
Benzo(a)pyrene
50-32-8
8270E
ND
0.80
0.20
ug/L
2
Benzo(b)fluoranthene
205-99-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(g,h,i)perylene
191-24-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(k)fluoranthene
207-08-9
8270E
ND
0.80
0.20
ug/L
2
1,1'-Biphenyl
92-52-4
8270E
ND
4.0
0.50
ug/L
2
4-Bromophenyl phenyl ether
101-55-3
8270E
ND
4.0
0.50
ug/L
2
Butyl benzyl phthalate
85-68-7
8270E
ND
4.0
0.50
ug/L
2
Caprolactam
105-60-2
8270E
1.9 BJ
8.0
1.0
ug/L
2
Carbazole
86-74-8
8270E
ND
4.0
0.50
ug/L
2
bis (2-Chloro-1-methylethyl) ether
108-60-1
8270E
ND
4.0
0.50
ug/L
2
4-Chloro-3-methyl phenol
59-50-7
8270E
ND
4.0
0.50
ug/L
2
4-Chloroaniline
106-47-8
8270E
ND
8.0
0.50
ug/L
2
bis(2-Chloroethoxy)methane
111-91-1
8270E
ND
4.0
0.50
ug/L
2
bis(2-Chloroethyl)ether
111-44-4
8270E
ND
4.0
0.50
ug/L
2
2-Chloronaphthalene
91-58-7
8270E
ND
4.0
0.50
ug/L
2
2-Chlorophenol
95-57-8
8270E
ND
4.0
0.50
ug/L
2
4-Chlorophenyl phenyl ether
7005-72-3
8270E
ND
4.0
0.50
ug/L
2
Chrysene
218-01-9
8270E
ND
0.80
0.20
ug/L
2
Dibenzo(a,h)anthracene
53-70-3
8270E
ND
0.80
0.20
ug/L
2
Dibenzofuran
132-64-9
8270E
ND
4.0
0.50
ug/L
2
3,3'-Dichlorobenzidine
91-94-1
8270E
ND
4.0
1.8
ug/L
2
2,4-Dichlorophenol
120-83-2
8270E
ND
8.0
1.0
ug/L
2
Diethylphthalate
84-66-2
8270E
ND
4.0
0.50
ug/L
2
Dimethyl phthalate
131-11-3
8270E
ND
4.0
0.50
ug/L
2
2,4-Dimethylphenol
105-67-9
8270E
ND
4.0
1.0
ug/L
2
Di-n-butyl phthalate
84-74-2
8270E
ND
4.0
0.50
ug/L
2
4,6-Dinitro-2-methylphenol
534-52-1
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrophenol
51-28-5
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrotoluene
121-14-2
8270E
ND
8.0
0.50
ug/L
2
2,6-Dinitrotoluene
606-20-2
8270E
ND
8.0
0.50
ug/L
2
Di-n-octylphthalate
117-84-0
8270E
ND
4.0
0.50
ug/L
2
bis(2-Ethylhexyl)phthalate
117-81-7
8270E
3.4 J
4.0
0.50
ug/L
2
Fluoranthene
206-44-0
8270E
ND
0.80
0.20
ug/L
2
Fluorene
86-73-7
8270E
ND
0.80
0.20
ug/L
2
Hexachlorobenzene
118-74-1
8270E
ND
4.0
0.50
ug/L
2
Hexachlorobutadiene
87-68-3
8270E
ND
4.0
0.50
ug/L
2
Hexachlorocyclopentadiene
77-47-4
8270E
ND
20
2.0
ug/L
2
LOQ = Limit of Quantitation B =
Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N =
Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W =
Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 31 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-004
Description: MW-4R Matrix: Aqueous
Date Sampled:08/18/2020 1105 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 3520C 8270E 1 08/26/2020 1534 SCD 08/24/2020 1530 64482
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Hexachloroethane
67-72-1
8270E
ND
4.0
1.0
ug/L
2
Indeno(1,2,3-c,d)pyrene
193-39-5
8270E
ND
0.80
0.20
ug/L
2
Isophorone
78-59-1
8270E
ND
4.0
0.50
ug/L
2
2-Methylnaphthalene
91-57-6
8270E
ND
0.80
0.20
ug/L
2
2-Methylphenol
95-48-7
8270E
ND
4.0
1.0
ug/L
2
3+4-Methylphenol
106-44-5
8270E
ND
4.0
1.5
ug/L
2
Naphthalene
91-20-3
8270E
ND
0.80
0.20
ug/L
2
2-Nitroaniline
88-74-4
8270E
ND
8.0
0.50
ug/L
2
3-Nitroaniline
99-09-2
8270E
ND
8.0
1.0
ug/L
2
4-Nitroaniline
100-01-6
8270E
ND
8.0
1.5
ug/L
2
Nitrobenzene
98-95-3
8270E
ND
4.0
1.5
ug/L
2
2-Nitrophenol
88-75-5
8270E
ND
4.0
1.0
ug/L
2
4-Nitrophenol
100-02-7
8270E
ND
20
2.0
ug/L
2
N-Nitrosodi-n-propylamine
621-64-7
8270E
ND
4.0
0.50
ug/L
2
N-Nitrosodiphenylamine (Diphenylamine)
86-30-6
8270E
ND
4.0
0.50
ug/L
2
Pentachlorophenol
87-86-5
8270E
ND
20
2.0
ug/L
2
Phenanthrene
85-01-8
8270E
ND
0.80
0.20
ug/L
2
Phenol
108-95-2
8270E
ND
4.0
0.50
ug/L
2
Pyrene
129-00-0
8270E
ND
0.80
0.20
ug/L
2
2,4,5-Trichlorophenol
95-95-4
8270E
ND
4.0
0.50
ug/L
2
2,4,6-Trichlorophenol
88-06-2
8270E
ND
4.0
0.50
ug/L
2
Run 2 Acceptance
Surrogate
Q % Recovery Limits
2-Fluorobiphenyl
77
37-129
2-Fluorophenol
43
24-127
Nitrobenzene-d5
74
38-127
Phenol-d5
58
28-128
Terphenyl-d14
80
10-148
2,4,6-Tribromophenol
68
35-144
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 32 of 118

MADEP EPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-004
Description: MW-4R Matrix: Aqueous
Date Sampled:08/18/2020 1105 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 09/02/2020 1319 JJG 08/21/2020 0916 64259
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C11 - C22 Aromatics MADEP-EPH-04 ND 95 95 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
o - Terphenyl (aromatic)
2-Fluorobiphenyl (fractionation 1)
2-Bromonaphthalene (fractionation 2)
71 40-140
87 40-140
79 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 33 of 118

MADEP EPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-004
Description: MW-4R Matrix: Aqueous
Date Sampled:08/18/2020 1105 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 09/02/2020 1218 JJG 08/21/2020 0916 64258
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C18 Aliphatics MADEP-EPH-04 ND 95 95 ug/L 1
C19 - C36 Aliphatics MADEP-EPH-04 ND 95 95 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
1-Chloro-octadecane (aliphatic)
50 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 34 of 118

MADEP VPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-004
Description: MW-4R Matrix: Aqueous
Date Sampled:08/18/2020 1105 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201653 ECB 64343
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C5 - C8 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
C9 - C12 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (FID)
103 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 35 of 118

MADEP VPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-004
Description: MW-4R Matrix: Aqueous
Date Sampled:08/18/2020 1105 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201653 ECB 64344
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C10 Aromatics MADEP-VPH-18- ND 25 5.0 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (PID)
103 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 36 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-005
Description: MW-5 Matrix: Aqueous
Date Sampled:08/18/2020 1205 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
1 5030B 8260D
1 08/25/20201523 JM1
64627
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acetone
67-64-1
8260D
ND
10
4.0
ug/L
1
Benzene
71-43-2
8260D
ND
0.50
0.40
ug/L
1
Bromodichloromethane
75-27-4
8260D
ND
0.50
0.40
ug/L
1
Bromoform
75-25-2
8260D
ND
0.50
0.40
ug/L
1
Bromomethane (Methyl bromide)
74-83-9
8260D
ND
0.50
0.40
ug/L
1
2-Butanone (MEK)
78-93-3
8260D
ND
10
2.0
ug/L
1
Carbon disulfide
75-15-0
8260D
ND
0.50
0.40
ug/L
1
Carbon tetrachloride
56-23-5
8260D
ND
0.50
0.40
ug/L
1
Chlorobenzene
108-90-7
8260D
ND
0.50
0.40
ug/L
1
Chloroethane
75-00-3
8260D
ND
0.50
0.40
ug/L
1
Chloroform
67-66-3
8260D
ND
0.50
0.40
ug/L
1
Chloromethane (Methyl chloride)
74-87-3
8260D
ND
0.50
0.40
ug/L
1
Cyclohexane
110-82-7
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromo-3-chloropropane (DBCP)
96-12-8
8260D
ND
0.50
0.40
ug/L
1
Dibromochloromethane
124-48-1
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromoethane (EDB)
106-93-4
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichlorobenzene
95-50-1
8260D
ND
0.50
0.40
ug/L
1
1,3-Dichlorobenzene
541-73-1
8260D
ND
0.50
0.40
ug/L
1
1,4-Dichlorobenzene
106-46-7
8260D
ND
0.50
0.40
ug/L
1
Dichlorodifluoromethane
75-71-8
8260D
ND
0.50
0.40
ug/L
1
1,1-Dichloroethane
75-34-3
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloroethane
107-06-2
8260D
ND
0.50
0.40
ug/L
1
1, 1 -Dichloroethene
75-35-4
8260D
ND
0.50
0.40
ug/L
1
cis- 1,2-Dichloroethene
156-59-2
8260D
ND
0.50
0.40
ug/L
1
trans-1,2-Dichloroethene
156-60-5
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloropropane
78-87-5
8260D
ND
0.50
0.40
ug/L
1
cis- 1,3-Dichloropropene
10061-01-5
8260D
ND
0.50
0.40
ug/L
1
trans-1,3-Dichloropropene
10061-02-6
8260D
ND
0.50
0.40
ug/L
1
Ethylbenzene
100-41-4
8260D
ND
0.50
0.40
ug/L
1
2-Hexanone
591-78-6
8260D
ND
10
2.0
ug/L
1
Isopropylbenzene
98-82-8
8260D
ND
0.50
0.40
ug/L
1
Methyl acetate
79-20-9
8260D
ND
1.0
0.40
ug/L
1
Methyl tertiary butyl ether (MTBE)
1634-04-4
8260D
ND
0.50
0.40
ug/L
1
4-Methyl-2-pentanone
108-10-1
8260D
ND
10
2.0
ug/L
1
Methylcyclohexane
108-87-2
8260D
ND
5.0
0.40
ug/L
1
Methylene chloride
75-09-2
8260D
ND
0.50
0.40
ug/L
1
Styrene
100-42-5
8260D
ND
0.50
0.41
ug/L
1
1,1,2,2-Tetrachloroethane
79-34-5
8260D
ND
0.50
0.40
ug/L
1
Tetrachloroethene
127-18-4
8260D
ND
0.50
0.40
ug/L
1
Toluene
108-88-3
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloro-1,2,2-Trifluoroethane
76-13-1
8260D
ND
1.0
0.42
ug/L
1
1,2,4-Trichlorobenzene
120-82-1
8260D
ND
0.50
0.40
ug/L
1
1,1,1-Trichloroethane
71-55-6
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloroethane
79-00-5
8260D
ND
0.50
0.40
ug/L
1
LOQ = Limit of Quantitation B = Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 37 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-005
Description: MW-5 Matrix: Aqueous
Date Sampled:08/18/2020 1205 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 5030B 8260D 1 08/25/20201523 JM1 64627
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Trichloroethene
79-01-6
8260D
ND
0.50
0.40
ug/L
1
Trichlorofluoromethane
75-69-4
8260D
ND
0.50
0.40
ug/L
1
Vinyl chloride
75-01-4
8260D
ND
0.50
0.40
ug/L
1
Xylenes (total)
1330-20-7
8260D
ND
1.0
0.40
ug/L
1
Run 1 Acceptance
Surrogate
Q % Recovery Limits
Bromofluorobenzene
1,2-Dichloroethane-d4
Toluene-d8
100 70-130
100 70-130
102 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 38 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-005
Description: MW-5 Matrix: Aqueous
Date Sampled:08/18/2020 1205 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method
Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
2 3520C
8270E
1 08/26/2020 1559 SCD
08/24/2020 1530 64482
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acenaphthene
83-32-9
8270E
ND
0.80
0.20
ug/L
2
Acenaphthylene
208-96-8
8270E
ND
0.80
0.20
ug/L
2
Acetophenone
98-86-2
8270E
ND
4.0
0.50
ug/L
2
Anthracene
120-12-7
8270E
ND
0.80
0.20
ug/L
2
Atrazine
1912-24-9
8270E
ND
4.0
0.50
ug/L
2
Benzaldehyde
100-52-7
8270E
ND
8.0
0.50
ug/L
2
Benzo(a)anthracene
56-55-3
8270E
ND
0.80
0.20
ug/L
2
Benzo(a)pyrene
50-32-8
8270E
ND
0.80
0.20
ug/L
2
Benzo(b)fluoranthene
205-99-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(g,h,i)perylene
191-24-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(k)fluoranthene
207-08-9
8270E
ND
0.80
0.20
ug/L
2
1,1'-Biphenyl
92-52-4
8270E
ND
4.0
0.50
ug/L
2
4-Bromophenyl phenyl ether
101-55-3
8270E
ND
4.0
0.50
ug/L
2
Butyl benzyl phthalate
85-68-7
8270E
ND
4.0
0.50
ug/L
2
Caprolactam
105-60-2
8270E
ND
8.0
1.0
ug/L
2
Carbazole
86-74-8
8270E
ND
4.0
0.50
ug/L
2
bis (2-Chloro-1-methylethyl) ether
108-60-1
8270E
ND
4.0
0.50
ug/L
2
4-Chloro-3-methyl phenol
59-50-7
8270E
ND
4.0
0.50
ug/L
2
4-Chloroaniline
106-47-8
8270E
ND
8.0
0.50
ug/L
2
bis(2-Chloroethoxy)methane
111-91-1
8270E
ND
4.0
0.50
ug/L
2
bis(2-Chloroethyl)ether
111-44-4
8270E
ND
4.0
0.50
ug/L
2
2-Chloronaphthalene
91-58-7
8270E
ND
4.0
0.50
ug/L
2
2-Chlorophenol
95-57-8
8270E
ND
4.0
0.50
ug/L
2
4-Chlorophenyl phenyl ether
7005-72-3
8270E
ND
4.0
0.50
ug/L
2
Chrysene
218-01-9
8270E
ND
0.80
0.20
ug/L
2
Dibenzo(a,h)anthracene
53-70-3
8270E
ND
0.80
0.20
ug/L
2
Dibenzofuran
132-64-9
8270E
ND
4.0
0.50
ug/L
2
3,3'-Dichlorobenzidine
91-94-1
8270E
ND
4.0
1.8
ug/L
2
2,4-Dichlorophenol
120-83-2
8270E
ND
8.0
1.0
ug/L
2
Diethylphthalate
84-66-2
8270E
ND
4.0
0.50
ug/L
2
Dimethyl phthalate
131-11-3
8270E
ND
4.0
0.50
ug/L
2
2,4-Dimethylphenol
105-67-9
8270E
ND
4.0
1.0
ug/L
2
Di-n-butyl phthalate
84-74-2
8270E
ND
4.0
0.50
ug/L
2
4,6-Dinitro-2-methylphenol
534-52-1
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrophenol
51-28-5
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrotoluene
121-14-2
8270E
ND
8.0
0.50
ug/L
2
2,6-Dinitrotoluene
606-20-2
8270E
ND
8.0
0.50
ug/L
2
Di-n-octylphthalate
117-84-0
8270E
ND
4.0
0.50
ug/L
2
bis(2-Ethylhexyl)phthalate
117-81-7
8270E
3.4 J
4.0
0.50
ug/L
2
Fluoranthene
206-44-0
8270E
ND
0.80
0.20
ug/L
2
Fluorene
86-73-7
8270E
ND
0.80
0.20
ug/L
2
Hexachlorobenzene
118-74-1
8270E
ND
4.0
0.50
ug/L
2
Hexachlorobutadiene
87-68-3
8270E
ND
4.0
0.50
ug/L
2
Hexachlorocyclopentadiene
77-47-4
8270E
ND
20
2.0
ug/L
2
LOQ = Limit of Quantitation B =
Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N =
Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W =
Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 39 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-005
Description: MW-5 Matrix: Aqueous
Date Sampled:08/18/2020 1205 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 3520C 8270E 1 08/26/2020 1559 SCD 08/24/2020 1530 64482
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Hexachloroethane
67-72-1
8270E
ND
4.0
1.0
ug/L
2
Indeno(1,2,3-c,d)pyrene
193-39-5
8270E
ND
0.80
0.20
ug/L
2
Isophorone
78-59-1
8270E
ND
4.0
0.50
ug/L
2
2-Methylnaphthalene
91-57-6
8270E
ND
0.80
0.20
ug/L
2
2-Methylphenol
95-48-7
8270E
ND
4.0
1.0
ug/L
2
3+4-Methylphenol
106-44-5
8270E
ND
4.0
1.5
ug/L
2
Naphthalene
91-20-3
8270E
ND
0.80
0.20
ug/L
2
2-Nitroaniline
88-74-4
8270E
ND
8.0
0.50
ug/L
2
3-Nitroaniline
99-09-2
8270E
ND
8.0
1.0
ug/L
2
4-Nitroaniline
100-01-6
8270E
ND
8.0
1.5
ug/L
2
Nitrobenzene
98-95-3
8270E
ND
4.0
1.5
ug/L
2
2-Nitrophenol
88-75-5
8270E
ND
4.0
1.0
ug/L
2
4-Nitrophenol
100-02-7
8270E
ND
20
2.0
ug/L
2
N-Nitrosodi-n-propylamine
621-64-7
8270E
ND
4.0
0.50
ug/L
2
N-Nitrosodiphenylamine (Diphenylamine)
86-30-6
8270E
ND
4.0
0.50
ug/L
2
Pentachlorophenol
87-86-5
8270E
ND
20
2.0
ug/L
2
Phenanthrene
85-01-8
8270E
ND
0.80
0.20
ug/L
2
Phenol
108-95-2
8270E
ND
4.0
0.50
ug/L
2
Pyrene
129-00-0
8270E
ND
0.80
0.20
ug/L
2
2,4,5-Trichlorophenol
95-95-4
8270E
ND
4.0
0.50
ug/L
2
2,4,6-Trichlorophenol
88-06-2
8270E
ND
4.0
0.50
ug/L
2
Run 2 Acceptance
Surrogate
Q % Recovery Limits
2-Fluorobiphenyl
78
37-129
2-Fluorophenol
50
24-127
Nitrobenzene-d5
78
38-127
Phenol-d5
70
28-128
Terphenyl-d14
81
10-148
2,4,6-Tribromophenol
68
35-144
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 40 of 118

MADEP EPH (aliphatics) - Unfractionated
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-005
Description: MW-5 Matrix: Aqueous
Date Sampled:08/18/2020 1205 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution
Analysis Date Analyst
Prep Date
Batch
1 MADEP-EPH- MADEP-EPH-04 1
08/30/2020 2341 JJG
08/21/2020 0916
64251
CAS Analytical
Parameter Number Method
Result Q
LOQ DL Units Run
C19 - C36 Aliphatics - Unfractionated
MADEP-EPH-04
ND
94 94 ug/L 1
C9 - C18 Aliphatics - Unfractionated
MADEP-EPH-04
ND
94 94 ug/L 1
Run 1
Acceptance
Surrogate Q % Recovery
Limits
1-Chloro-octadecane (aliphatic) - Unfractionated 65
40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 41 of 118

MADEP EPH (aromatics) - Unfractionated
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-005
Description: MW-5 Matrix: Aqueous
Date Sampled:08/18/2020 1205 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 08/30/2020 2341 JJG 08/21/2020 0916 64252
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C11 - C22 Aromatics - Unfractionated MADEP-EPH-04 ND 94 94 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
o - Terphenyl (aromatic) - Unfractionated 84 40-140
2-Fluorobiphenyl (fractionation 1) 120 40-140
2-Bromonaphthalene (fractionation 2) 107 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 42 of 118

MADEP VPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-005
Description: MW-5 Matrix: Aqueous
Date Sampled:08/18/2020 1205 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201722 ECB 64343
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C5 - C8 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
C9 - C12 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (FID)
100 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 43 of 118

MADEP VPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-005
Description: MW-5 Matrix: Aqueous
Date Sampled:08/18/2020 1205 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201722 ECB 64344
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C10 Aromatics MADEP-VPH-18- ND 25 5.0 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (PID)
102 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 44 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-006
Description: MW-6R Matrix: Aqueous
Date Sampled:08/18/2020 1345 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
1 5030B 8260D
1 08/25/20201545 JM1
64627
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acetone
67-64-1
8260D
ND
10
4.0
ug/L
1
Benzene
71-43-2
8260D
ND
0.50
0.40
ug/L
1
Bromodichloromethane
75-27-4
8260D
ND
0.50
0.40
ug/L
1
Bromoform
75-25-2
8260D
ND
0.50
0.40
ug/L
1
Bromomethane (Methyl bromide)
74-83-9
8260D
ND
0.50
0.40
ug/L
1
2-Butanone (MEK)
78-93-3
8260D
ND
10
2.0
ug/L
1
Carbon disulfide
75-15-0
8260D
ND
0.50
0.40
ug/L
1
Carbon tetrachloride
56-23-5
8260D
ND
0.50
0.40
ug/L
1
Chlorobenzene
108-90-7
8260D
ND
0.50
0.40
ug/L
1
Chloroethane
75-00-3
8260D
ND
0.50
0.40
ug/L
1
Chloroform
67-66-3
8260D
ND
0.50
0.40
ug/L
1
Chloromethane (Methyl chloride)
74-87-3
8260D
ND
0.50
0.40
ug/L
1
Cyclohexane
110-82-7
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromo-3-chloropropane (DBCP)
96-12-8
8260D
ND
0.50
0.40
ug/L
1
Dibromochloromethane
124-48-1
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromoethane (EDB)
106-93-4
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichlorobenzene
95-50-1
8260D
ND
0.50
0.40
ug/L
1
1,3-Dichlorobenzene
541-73-1
8260D
ND
0.50
0.40
ug/L
1
1,4-Dichlorobenzene
106-46-7
8260D
ND
0.50
0.40
ug/L
1
Dichlorodifluoromethane
75-71-8
8260D
ND
0.50
0.40
ug/L
1
1,1-Dichloroethane
75-34-3
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloroethane
107-06-2
8260D
ND
0.50
0.40
ug/L
1
1, 1 -Dichloroethene
75-35-4
8260D
ND
0.50
0.40
ug/L
1
cis- 1,2-Dichloroethene
156-59-2
8260D
ND
0.50
0.40
ug/L
1
trans-1,2-Dichloroethene
156-60-5
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloropropane
78-87-5
8260D
ND
0.50
0.40
ug/L
1
cis- 1,3-Dichloropropene
10061-01-5
8260D
ND
0.50
0.40
ug/L
1
trans-1,3-Dichloropropene
10061-02-6
8260D
ND
0.50
0.40
ug/L
1
Ethylbenzene
100-41-4
8260D
ND
0.50
0.40
ug/L
1
2-Hexanone
591-78-6
8260D
ND
10
2.0
ug/L
1
Isopropylbenzene
98-82-8
8260D
1.3
0.50
0.40
ug/L
1
Methyl acetate
79-20-9
8260D
ND
1.0
0.40
ug/L
1
Methyl tertiary butyl ether (MTBE)
1634-04-4
8260D
ND
0.50
0.40
ug/L
1
4-Methyl-2-pentanone
108-10-1
8260D
ND
10
2.0
ug/L
1
Methylcyclohexane
108-87-2
8260D
0.93 J
5.0
0.40
ug/L
1
Methylene chloride
75-09-2
8260D
ND
0.50
0.40
ug/L
1
Styrene
100-42-5
8260D
ND
0.50
0.41
ug/L
1
1,1,2,2-Tetrachloroethane
79-34-5
8260D
ND
0.50
0.40
ug/L
1
Tetrachloroethene
127-18-4
8260D
ND
0.50
0.40
ug/L
1
Toluene
108-88-3
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloro-1,2,2-Trifluoroethane
76-13-1
8260D
ND
1.0
0.42
ug/L
1
1,2,4-Trichlorobenzene
120-82-1
8260D
ND
0.50
0.40
ug/L
1
1,1,1-Trichloroethane
71-55-6
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloroethane
79-00-5
8260D
ND
0.50
0.40
ug/L
1
LOQ = Limit of Quantitation B = Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 45 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-006
Description: MW-6R Matrix: Aqueous
Date Sampled:08/18/2020 1345 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 5030B 8260D 1 08/25/20201545 JM1 64627
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Trichloroethene
79-01-6
8260D
ND
0.50
0.40
ug/L
1
Trichlorofluoromethane
75-69-4
8260D
ND
0.50
0.40
ug/L
1
Vinyl chloride
75-01-4
8260D
ND
0.50
0.40
ug/L
1
Xylenes (total)
1330-20-7
8260D
ND
1.0
0.40
ug/L
1
Run 1 Acceptance
Surrogate
Q % Recovery Limits
Bromofluorobenzene
1,2-Dichloroethane-d4
Toluene-d8
99 70-130
102 70-130
99 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 46 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-006
Description: MW-6R Matrix: Aqueous
Date Sampled:08/18/2020 1345 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method
Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
2 3520C
8270E
1 08/26/2020 1623 SCD
08/24/2020 1530 64482
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acenaphthene
83-32-9
8270E
4.5
0.80
0.20
ug/L
2
Acenaphthylene
208-96-8
8270E
ND
0.80
0.20
ug/L
2
Acetophenone
98-86-2
8270E
ND
4.0
0.50
ug/L
2
Anthracene
120-12-7
8270E
0.56 J
0.80
0.20
ug/L
2
Atrazine
1912-24-9
8270E
ND
4.0
0.50
ug/L
2
Benzaldehyde
100-52-7
8270E
ND
8.0
0.50
ug/L
2
Benzo(a)anthracene
56-55-3
8270E
ND
0.80
0.20
ug/L
2
Benzo(a)pyrene
50-32-8
8270E
ND
0.80
0.20
ug/L
2
Benzo(b)fluoranthene
205-99-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(g,h,i)perylene
191-24-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(k)fluoranthene
207-08-9
8270E
ND
0.80
0.20
ug/L
2
1,1'-Biphenyl
92-52-4
8270E
ND
4.0
0.50
ug/L
2
4-Bromophenyl phenyl ether
101-55-3
8270E
ND
4.0
0.50
ug/L
2
Butyl benzyl phthalate
85-68-7
8270E
ND
4.0
0.50
ug/L
2
Caprolactam
105-60-2
8270E
1.9 BJ
8.0
1.0
ug/L
2
Carbazole
86-74-8
8270E
ND
4.0
0.50
ug/L
2
bis (2-Chloro-1-methylethyl) ether
108-60-1
8270E
ND
4.0
0.50
ug/L
2
4-Chloro-3-methyl phenol
59-50-7
8270E
ND
4.0
0.50
ug/L
2
4-Chloroaniline
106-47-8
8270E
ND
8.0
0.50
ug/L
2
bis(2-Chloroethoxy)methane
111-91-1
8270E
ND
4.0
0.50
ug/L
2
bis(2-Chloroethyl)ether
111-44-4
8270E
ND
4.0
0.50
ug/L
2
2-Chloronaphthalene
91-58-7
8270E
ND
4.0
0.50
ug/L
2
2-Chlorophenol
95-57-8
8270E
ND
4.0
0.50
ug/L
2
4-Chlorophenyl phenyl ether
7005-72-3
8270E
ND
4.0
0.50
ug/L
2
Chrysene
218-01-9
8270E
ND
0.80
0.20
ug/L
2
Dibenzo(a,h)anthracene
53-70-3
8270E
ND
0.80
0.20
ug/L
2
Dibenzofuran
132-64-9
8270E
ND
4.0
0.50
ug/L
2
3,3'-Dichlorobenzidine
91-94-1
8270E
ND
4.0
1.8
ug/L
2
2,4-Dichlorophenol
120-83-2
8270E
ND
8.0
1.0
ug/L
2
Diethylphthalate
84-66-2
8270E
ND
4.0
0.50
ug/L
2
Dimethyl phthalate
131-11-3
8270E
ND
4.0
0.50
ug/L
2
2,4-Dimethylphenol
105-67-9
8270E
ND
4.0
1.0
ug/L
2
Di-n-butyl phthalate
84-74-2
8270E
ND
4.0
0.50
ug/L
2
4,6-Dinitro-2-methylphenol
534-52-1
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrophenol
51-28-5
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrotoluene
121-14-2
8270E
ND
8.0
0.50
ug/L
2
2,6-Dinitrotoluene
606-20-2
8270E
ND
8.0
0.50
ug/L
2
Di-n-octylphthalate
117-84-0
8270E
ND
4.0
0.50
ug/L
2
bis(2-Ethylhexyl)phthalate
117-81-7
8270E
3.5 J
4.0
0.50
ug/L
2
Fluoranthene
206-44-0
8270E
ND
0.80
0.20
ug/L
2
Fluorene
86-73-7
8270E
5.5
0.80
0.20
ug/L
2
Hexachlorobenzene
118-74-1
8270E
ND
4.0
0.50
ug/L
2
Hexachlorobutadiene
87-68-3
8270E
ND
4.0
0.50
ug/L
2
Hexachlorocyclopentadiene
77-47-4
8270E
ND
20
2.0
ug/L
2
LOQ = Limit of Quantitation B =
Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N =
Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W =
Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 47 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-006
Description: MW-6R Matrix: Aqueous
Date Sampled:08/18/2020 1345 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 3520C 8270E 1 08/26/2020 1623 SCD 08/24/2020 1530 64482
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Hexachloroethane
67-72-1
8270E
ND
4.0
1.0
ug/L
2
Indeno(1,2,3-c,d)pyrene
193-39-5
8270E
ND
0.80
0.20
ug/L
2
Isophorone
78-59-1
8270E
ND
4.0
0.50
ug/L
2
2-Methylnaphthalene
91-57-6
8270E
ND
0.80
0.20
ug/L
2
2-Methylphenol
95-48-7
8270E
ND
4.0
1.0
ug/L
2
3+4-Methylphenol
106-44-5
8270E
ND
4.0
1.5
ug/L
2
Naphthalene
91-20-3
8270E
ND
0.80
0.20
ug/L
2
2-Nitroaniline
88-74-4
8270E
ND
8.0
0.50
ug/L
2
3-Nitroaniline
99-09-2
8270E
ND
8.0
1.0
ug/L
2
4-Nitroaniline
100-01-6
8270E
ND
8.0
1.5
ug/L
2
Nitrobenzene
98-95-3
8270E
ND
4.0
1.5
ug/L
2
2-Nitrophenol
88-75-5
8270E
ND
4.0
1.0
ug/L
2
4-Nitrophenol
100-02-7
8270E
ND
20
2.0
ug/L
2
N-Nitrosodi-n-propylamine
621-64-7
8270E
ND
4.0
0.50
ug/L
2
N-Nitrosodiphenylamine (Diphenylamine)
86-30-6
8270E
ND
4.0
0.50
ug/L
2
Pentachlorophenol
87-86-5
8270E
ND
20
2.0
ug/L
2
Phenanthrene
85-01-8
8270E
2.0
0.80
0.20
ug/L
2
Phenol
108-95-2
8270E
ND
4.0
0.50
ug/L
2
Pyrene
129-00-0
8270E
0.23 J
0.80
0.20
ug/L
2
2,4,5-Trichlorophenol
95-95-4
8270E
ND
4.0
0.50
ug/L
2
2,4,6-Trichlorophenol
88-06-2
8270E
ND
4.0
0.50
ug/L
2
Run 2 Acceptance
Surrogate
Q % Recovery Limits
2-Fluorobiphenyl
79
37-129
2-Fluorophenol
46
24-127
Nitrobenzene-d5
80
38-127
Phenol-d5
74
28-128
Terphenyl-d14
81
10-148
2,4,6-Tribromophenol
72
35-144
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 48 of 118

MADEP EPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-006
Description: MW-6R Matrix: Aqueous
Date Sampled:08/18/2020 1345 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 09/01/2020 1825 JJG 08/21/2020 0916 64259
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C11 - C22 Aromatics MADEP-EPH-04 550 93 93 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
o - Terphenyl (aromatic)
2-Fluorobiphenyl (fractionation 1)
2-Bromonaphthalene (fractionation 2)
106 40-140
139 40-140
121 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 49 of 118

MADEP EPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-006
Description: MW-6R Matrix: Aqueous
Date Sampled:08/18/2020 1345 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 08/31/2020 0441 JJG 08/21/2020 0916 64258
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C18 Aliphatics MADEP-EPH-04 ND 93 93 ug/L 1
C19 - C36 Aliphatics MADEP-EPH-04 ND 93 93 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
1-Chloro-octadecane (aliphatic)
44 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 50 of 118

MADEP VPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-006
Description: MW-6R Matrix: Aqueous
Date Sampled:08/18/2020 1345 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201750 ECB 64343
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C5 - C8 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
C9 - C12 Aliphatics MADEP-VPH-18- 90 75 15 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (FID)
72 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 51 of 118

MADEP VPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-006
Description: MW-6R Matrix: Aqueous
Date Sampled:08/18/2020 1345 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201750 ECB 64344
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C10 Aromatics MADEP-VPH-18- 130 25 5.0 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (PID)
85 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 52 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-007
Description: MW-7 Matrix: Aqueous
Date Sampled:08/18/2020 1135 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
1 5030B 8260D
1 08/25/20201607 JM1
64627
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acetone
67-64-1
8260D
ND
10
4.0
ug/L
1
Benzene
71-43-2
8260D
ND
0.50
0.40
ug/L
1
Bromodichloromethane
75-27-4
8260D
ND
0.50
0.40
ug/L
1
Bromoform
75-25-2
8260D
ND
0.50
0.40
ug/L
1
Bromomethane (Methyl bromide)
74-83-9
8260D
ND
0.50
0.40
ug/L
1
2-Butanone (MEK)
78-93-3
8260D
ND
10
2.0
ug/L
1
Carbon disulfide
75-15-0
8260D
ND
0.50
0.40
ug/L
1
Carbon tetrachloride
56-23-5
8260D
ND
0.50
0.40
ug/L
1
Chlorobenzene
108-90-7
8260D
ND
0.50
0.40
ug/L
1
Chloroethane
75-00-3
8260D
ND
0.50
0.40
ug/L
1
Chloroform
67-66-3
8260D
ND
0.50
0.40
ug/L
1
Chloromethane (Methyl chloride)
74-87-3
8260D
ND
0.50
0.40
ug/L
1
Cyclohexane
110-82-7
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromo-3-chloropropane (DBCP)
96-12-8
8260D
ND
0.50
0.40
ug/L
1
Dibromochloromethane
124-48-1
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromoethane (EDB)
106-93-4
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichlorobenzene
95-50-1
8260D
ND
0.50
0.40
ug/L
1
1,3-Dichlorobenzene
541-73-1
8260D
ND
0.50
0.40
ug/L
1
1,4-Dichlorobenzene
106-46-7
8260D
ND
0.50
0.40
ug/L
1
Dichlorodifluoromethane
75-71-8
8260D
ND
0.50
0.40
ug/L
1
1,1-Dichloroethane
75-34-3
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloroethane
107-06-2
8260D
ND
0.50
0.40
ug/L
1
1, 1 -Dichloroethene
75-35-4
8260D
ND
0.50
0.40
ug/L
1
cis- 1,2-Dichloroethene
156-59-2
8260D
ND
0.50
0.40
ug/L
1
trans-1,2-Dichloroethene
156-60-5
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloropropane
78-87-5
8260D
ND
0.50
0.40
ug/L
1
cis- 1,3-Dichloropropene
10061-01-5
8260D
ND
0.50
0.40
ug/L
1
trans-1,3-Dichloropropene
10061-02-6
8260D
ND
0.50
0.40
ug/L
1
Ethylbenzene
100-41-4
8260D
ND
0.50
0.40
ug/L
1
2-Hexanone
591-78-6
8260D
ND
10
2.0
ug/L
1
Isopropylbenzene
98-82-8
8260D
ND
0.50
0.40
ug/L
1
Methyl acetate
79-20-9
8260D
ND
1.0
0.40
ug/L
1
Methyl tertiary butyl ether (MTBE)
1634-04-4
8260D
ND
0.50
0.40
ug/L
1
4-Methyl-2-pentanone
108-10-1
8260D
ND
10
2.0
ug/L
1
Methylcyclohexane
108-87-2
8260D
ND
5.0
0.40
ug/L
1
Methylene chloride
75-09-2
8260D
ND
0.50
0.40
ug/L
1
Styrene
100-42-5
8260D
ND
0.50
0.41
ug/L
1
1,1,2,2-Tetrachloroethane
79-34-5
8260D
ND
0.50
0.40
ug/L
1
Tetrachloroethene
127-18-4
8260D
ND
0.50
0.40
ug/L
1
Toluene
108-88-3
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloro-1,2,2-Trifluoroethane
76-13-1
8260D
ND
1.0
0.42
ug/L
1
1,2,4-Trichlorobenzene
120-82-1
8260D
ND
0.50
0.40
ug/L
1
1,1,1-Trichloroethane
71-55-6
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloroethane
79-00-5
8260D
ND
0.50
0.40
ug/L
1
LOQ = Limit of Quantitation B = Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 53 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-007
Description: MW-7 Matrix: Aqueous
Date Sampled:08/18/2020 1135 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 5030B 8260D 1 08/25/20201607 JM1 64627
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Trichloroethene
79-01-6
8260D
ND
0.50
0.40
ug/L
1
Trichlorofluoromethane
75-69-4
8260D
ND
0.50
0.40
ug/L
1
Vinyl chloride
75-01-4
8260D
ND
0.50
0.40
ug/L
1
Xylenes (total)
1330-20-7
8260D
ND
1.0
0.40
ug/L
1
Run 1 Acceptance
Surrogate
Q % Recovery Limits
Bromofluorobenzene
1,2-Dichloroethane-d4
Toluene-d8
101 70-130
103 70-130
102 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 54 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-007
Description: MW-7 Matrix: Aqueous
Date Sampled:08/18/2020 1135 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method
Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
2 3520C
8270E
1 08/26/2020 1649 SCD
08/24/2020 1530 64482
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acenaphthene
83-32-9
8270E
ND
0.80
0.20
ug/L
2
Acenaphthylene
208-96-8
8270E
ND
0.80
0.20
ug/L
2
Acetophenone
98-86-2
8270E
ND
4.0
0.50
ug/L
2
Anthracene
120-12-7
8270E
ND
0.80
0.20
ug/L
2
Atrazine
1912-24-9
8270E
ND
4.0
0.50
ug/L
2
Benzaldehyde
100-52-7
8270E
ND
8.0
0.50
ug/L
2
Benzo(a)anthracene
56-55-3
8270E
ND
0.80
0.20
ug/L
2
Benzo(a)pyrene
50-32-8
8270E
ND
0.80
0.20
ug/L
2
Benzo(b)fluoranthene
205-99-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(g,h,i)perylene
191-24-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(k)fluoranthene
207-08-9
8270E
ND
0.80
0.20
ug/L
2
1,1'-Biphenyl
92-52-4
8270E
ND
4.0
0.50
ug/L
2
4-Bromophenyl phenyl ether
101-55-3
8270E
ND
4.0
0.50
ug/L
2
Butyl benzyl phthalate
85-68-7
8270E
ND
4.0
0.50
ug/L
2
Caprolactam
105-60-2
8270E
ND
8.0
1.0
ug/L
2
Carbazole
86-74-8
8270E
ND
4.0
0.50
ug/L
2
bis (2-Chloro-1-methylethyl) ether
108-60-1
8270E
ND
4.0
0.50
ug/L
2
4-Chloro-3-methyl phenol
59-50-7
8270E
ND
4.0
0.50
ug/L
2
4-Chloroaniline
106-47-8
8270E
ND
8.0
0.50
ug/L
2
bis(2-Chloroethoxy)methane
111-91-1
8270E
ND
4.0
0.50
ug/L
2
bis(2-Chloroethyl)ether
111-44-4
8270E
ND
4.0
0.50
ug/L
2
2-Chloronaphthalene
91-58-7
8270E
ND
4.0
0.50
ug/L
2
2-Chlorophenol
95-57-8
8270E
ND
4.0
0.50
ug/L
2
4-Chlorophenyl phenyl ether
7005-72-3
8270E
ND
4.0
0.50
ug/L
2
Chrysene
218-01-9
8270E
ND
0.80
0.20
ug/L
2
Dibenzo(a,h)anthracene
53-70-3
8270E
ND
0.80
0.20
ug/L
2
Dibenzofuran
132-64-9
8270E
ND
4.0
0.50
ug/L
2
3,3'-Dichlorobenzidine
91-94-1
8270E
ND
4.0
1.8
ug/L
2
2,4-Dichlorophenol
120-83-2
8270E
ND
8.0
1.0
ug/L
2
Diethylphthalate
84-66-2
8270E
ND
4.0
0.50
ug/L
2
Dimethyl phthalate
131-11-3
8270E
ND
4.0
0.50
ug/L
2
2,4-Dimethylphenol
105-67-9
8270E
ND
4.0
1.0
ug/L
2
Di-n-butyl phthalate
84-74-2
8270E
ND
4.0
0.50
ug/L
2
4,6-Dinitro-2-methylphenol
534-52-1
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrophenol
51-28-5
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrotoluene
121-14-2
8270E
ND
8.0
0.50
ug/L
2
2,6-Dinitrotoluene
606-20-2
8270E
ND
8.0
0.50
ug/L
2
Di-n-octylphthalate
117-84-0
8270E
ND
4.0
0.50
ug/L
2
bis(2-Ethylhexyl)phthalate
117-81-7
8270E
3.4 J
4.0
0.50
ug/L
2
Fluoranthene
206-44-0
8270E
ND
0.80
0.20
ug/L
2
Fluorene
86-73-7
8270E
ND
0.80
0.20
ug/L
2
Hexachlorobenzene
118-74-1
8270E
ND
4.0
0.50
ug/L
2
Hexachlorobutadiene
87-68-3
8270E
ND
4.0
0.50
ug/L
2
Hexachlorocyclopentadiene
77-47-4
8270E
ND
20
2.0
ug/L
2
LOQ = Limit of Quantitation B =
Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N =
Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W =
Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 55 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-007
Description: MW-7 Matrix: Aqueous
Date Sampled:08/18/2020 1135 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 3520C 8270E 1 08/26/2020 1649 SCD 08/24/2020 1530 64482
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Hexachloroethane
67-72-1
8270E
ND
4.0
1.0
ug/L
2
Indeno(1,2,3-c,d)pyrene
193-39-5
8270E
ND
0.80
0.20
ug/L
2
Isophorone
78-59-1
8270E
ND
4.0
0.50
ug/L
2
2-Methylnaphthalene
91-57-6
8270E
ND
0.80
0.20
ug/L
2
2-Methylphenol
95-48-7
8270E
ND
4.0
1.0
ug/L
2
3+4-Methylphenol
106-44-5
8270E
ND
4.0
1.5
ug/L
2
Naphthalene
91-20-3
8270E
ND
0.80
0.20
ug/L
2
2-Nitroaniline
88-74-4
8270E
ND
8.0
0.50
ug/L
2
3-Nitroaniline
99-09-2
8270E
ND
8.0
1.0
ug/L
2
4-Nitroaniline
100-01-6
8270E
ND
8.0
1.5
ug/L
2
Nitrobenzene
98-95-3
8270E
ND
4.0
1.5
ug/L
2
2-Nitrophenol
88-75-5
8270E
ND
4.0
1.0
ug/L
2
4-Nitrophenol
100-02-7
8270E
ND
20
2.0
ug/L
2
N-Nitrosodi-n-propylamine
621-64-7
8270E
ND
4.0
0.50
ug/L
2
N-Nitrosodiphenylamine (Diphenylamine)
86-30-6
8270E
ND
4.0
0.50
ug/L
2
Pentachlorophenol
87-86-5
8270E
ND
20
2.0
ug/L
2
Phenanthrene
85-01-8
8270E
ND
0.80
0.20
ug/L
2
Phenol
108-95-2
8270E
ND
4.0
0.50
ug/L
2
Pyrene
129-00-0
8270E
ND
0.80
0.20
ug/L
2
2,4,5-Trichlorophenol
95-95-4
8270E
ND
4.0
0.50
ug/L
2
2,4,6-Trichlorophenol
88-06-2
8270E
ND
4.0
0.50
ug/L
2
Run 2 Acceptance
Surrogate
Q % Recovery Limits
2-Fluorobiphenyl
78
37-129
2-Fluorophenol
55
24-127
Nitrobenzene-d5
77
38-127
Phenol-d5
60
28-128
Terphenyl-d14
80
10-148
2,4,6-Tribromophenol
69
35-144
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 56 of 118

MADEP EPH (aliphatics) - Unfractionated
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-007
Description: MW-7 Matrix: Aqueous
Date Sampled:08/18/2020 1135 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution
Analysis Date Analyst
Prep Date
Batch
1 MADEP-EPH- MADEP-EPH-04 1
08/31/2020 0011 JJG
08/21/2020 0916
64251
CAS Analytical
Parameter Number Method
Result Q
LOQ DL Units Run
C19 - C36 Aliphatics - Unfractionated
MADEP-EPH-04
ND
94 94 ug/L 1
C9 - C18 Aliphatics - Unfractionated
MADEP-EPH-04
ND
94 94 ug/L 1
Run 1
Acceptance
Surrogate Q % Recovery
Limits
1-Chloro-octadecane (aliphatic) - Unfractionated 68
40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 57 of 118

MADEP EPH (aromatics) - Unfractionated
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-007
Description: MW-7 Matrix: Aqueous
Date Sampled:08/18/2020 1135 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 08/31/2020 0011 JJG 08/21/2020 0916 64252
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C11 - C22 Aromatics - Unfractionated MADEP-EPH-04 ND 94 94 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
o - Terphenyl (aromatic) - Unfractionated 93 40-140
2-Fluorobiphenyl (fractionation 1) 125 40-140
2-Bromonaphthalene (fractionation 2) 110 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 58 of 118

MADEP VPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-007
Description: MW-7 Matrix: Aqueous
Date Sampled:08/18/2020 1135 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201818 ECB 64343
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C5 - C8 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
C9 - C12 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (FID)
106 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 59 of 118

MADEP VPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-007
Description: MW-7 Matrix: Aqueous
Date Sampled:08/18/2020 1135 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201818 ECB 64344
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C10 Aromatics MADEP-VPH-18- 15 J 25 5.0 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (PID)
107 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 60 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-008
Description: MW-8 Matrix: Aqueous
Date Sampled:08/18/2020 1235 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
1 5030B 8260D
1 08/25/20201629 JM1
64627
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acetone
67-64-1
8260D
ND
10
4.0
ug/L
1
Benzene
71-43-2
8260D
ND
0.50
0.40
ug/L
1
Bromodichloromethane
75-27-4
8260D
ND
0.50
0.40
ug/L
1
Bromoform
75-25-2
8260D
ND
0.50
0.40
ug/L
1
Bromomethane (Methyl bromide)
74-83-9
8260D
ND
0.50
0.40
ug/L
1
2-Butanone (MEK)
78-93-3
8260D
ND
10
2.0
ug/L
1
Carbon disulfide
75-15-0
8260D
ND
0.50
0.40
ug/L
1
Carbon tetrachloride
56-23-5
8260D
ND
0.50
0.40
ug/L
1
Chlorobenzene
108-90-7
8260D
ND
0.50
0.40
ug/L
1
Chloroethane
75-00-3
8260D
ND
0.50
0.40
ug/L
1
Chloroform
67-66-3
8260D
ND
0.50
0.40
ug/L
1
Chloromethane (Methyl chloride)
74-87-3
8260D
ND
0.50
0.40
ug/L
1
Cyclohexane
110-82-7
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromo-3-chloropropane (DBCP)
96-12-8
8260D
ND
0.50
0.40
ug/L
1
Dibromochloromethane
124-48-1
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromoethane (EDB)
106-93-4
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichlorobenzene
95-50-1
8260D
ND
0.50
0.40
ug/L
1
1,3-Dichlorobenzene
541-73-1
8260D
ND
0.50
0.40
ug/L
1
1,4-Dichlorobenzene
106-46-7
8260D
ND
0.50
0.40
ug/L
1
Dichlorodifluoromethane
75-71-8
8260D
ND
0.50
0.40
ug/L
1
1,1-Dichloroethane
75-34-3
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloroethane
107-06-2
8260D
ND
0.50
0.40
ug/L
1
1, 1 -Dichloroethene
75-35-4
8260D
ND
0.50
0.40
ug/L
1
cis- 1,2-Dichloroethene
156-59-2
8260D
ND
0.50
0.40
ug/L
1
trans-1,2-Dichloroethene
156-60-5
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloropropane
78-87-5
8260D
ND
0.50
0.40
ug/L
1
cis- 1,3-Dichloropropene
10061-01-5
8260D
ND
0.50
0.40
ug/L
1
trans-1,3-Dichloropropene
10061-02-6
8260D
ND
0.50
0.40
ug/L
1
Ethylbenzene
100-41-4
8260D
ND
0.50
0.40
ug/L
1
2-Hexanone
591-78-6
8260D
ND
10
2.0
ug/L
1
Isopropylbenzene
98-82-8
8260D
ND
0.50
0.40
ug/L
1
Methyl acetate
79-20-9
8260D
ND
1.0
0.40
ug/L
1
Methyl tertiary butyl ether (MTBE)
1634-04-4
8260D
1.5
0.50
0.40
ug/L
1
4-Methyl-2-pentanone
108-10-1
8260D
ND
10
2.0
ug/L
1
Methylcyclohexane
108-87-2
8260D
ND
5.0
0.40
ug/L
1
Methylene chloride
75-09-2
8260D
ND
0.50
0.40
ug/L
1
Styrene
100-42-5
8260D
ND
0.50
0.41
ug/L
1
1,1,2,2-Tetrachloroethane
79-34-5
8260D
ND
0.50
0.40
ug/L
1
Tetrachloroethene
127-18-4
8260D
ND
0.50
0.40
ug/L
1
Toluene
108-88-3
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloro-1,2,2-Trifluoroethane
76-13-1
8260D
ND
1.0
0.42
ug/L
1
1,2,4-Trichlorobenzene
120-82-1
8260D
ND
0.50
0.40
ug/L
1
1,1,1-Trichloroethane
71-55-6
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloroethane
79-00-5
8260D
ND
0.50
0.40
ug/L
1
LOQ = Limit of Quantitation B = Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 61 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-008
Description: MW-8 Matrix: Aqueous
Date Sampled:08/18/2020 1235 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 5030B 8260D 1 08/25/20201629 JM1 64627
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Trichloroethene
79-01-6
8260D
ND
0.50
0.40
ug/L
1
Trichlorofluoromethane
75-69-4
8260D
ND
0.50
0.40
ug/L
1
Vinyl chloride
75-01-4
8260D
ND
0.50
0.40
ug/L
1
Xylenes (total)
1330-20-7
8260D
ND
1.0
0.40
ug/L
1
Run 1 Acceptance
Surrogate
Q % Recovery Limits
Bromofluorobenzene
1,2-Dichloroethane-d4
Toluene-d8
102 70-130
103 70-130
102 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 62 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-008
Description: MW-8 Matrix: Aqueous
Date Sampled:08/18/2020 1235 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method
Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
2 3520C
8270E
1 08/26/2020 1714 SCD
08/24/2020 1530 64482
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acenaphthene
83-32-9
8270E
ND
0.80
0.20
ug/L
2
Acenaphthylene
208-96-8
8270E
ND
0.80
0.20
ug/L
2
Acetophenone
98-86-2
8270E
ND
4.0
0.50
ug/L
2
Anthracene
120-12-7
8270E
ND
0.80
0.20
ug/L
2
Atrazine
1912-24-9
8270E
ND
4.0
0.50
ug/L
2
Benzaldehyde
100-52-7
8270E
ND
8.0
0.50
ug/L
2
Benzo(a)anthracene
56-55-3
8270E
ND
0.80
0.20
ug/L
2
Benzo(a)pyrene
50-32-8
8270E
ND
0.80
0.20
ug/L
2
Benzo(b)fluoranthene
205-99-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(g,h,i)perylene
191-24-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(k)fluoranthene
207-08-9
8270E
ND
0.80
0.20
ug/L
2
1,1'-Biphenyl
92-52-4
8270E
ND
4.0
0.50
ug/L
2
4-Bromophenyl phenyl ether
101-55-3
8270E
ND
4.0
0.50
ug/L
2
Butyl benzyl phthalate
85-68-7
8270E
ND
4.0
0.50
ug/L
2
Caprolactam
105-60-2
8270E
ND
8.0
1.0
ug/L
2
Carbazole
86-74-8
8270E
ND
4.0
0.50
ug/L
2
bis (2-Chloro-1-methylethyl) ether
108-60-1
8270E
ND
4.0
0.50
ug/L
2
4-Chloro-3-methyl phenol
59-50-7
8270E
ND
4.0
0.50
ug/L
2
4-Chloroaniline
106-47-8
8270E
ND
8.0
0.50
ug/L
2
bis(2-Chloroethoxy)methane
111-91-1
8270E
ND
4.0
0.50
ug/L
2
bis(2-Chloroethyl)ether
111-44-4
8270E
ND
4.0
0.50
ug/L
2
2-Chloronaphthalene
91-58-7
8270E
ND
4.0
0.50
ug/L
2
2-Chlorophenol
95-57-8
8270E
ND
4.0
0.50
ug/L
2
4-Chlorophenyl phenyl ether
7005-72-3
8270E
ND
4.0
0.50
ug/L
2
Chrysene
218-01-9
8270E
ND
0.80
0.20
ug/L
2
Dibenzo(a,h)anthracene
53-70-3
8270E
ND
0.80
0.20
ug/L
2
Dibenzofuran
132-64-9
8270E
ND
4.0
0.50
ug/L
2
3,3'-Dichlorobenzidine
91-94-1
8270E
ND
4.0
1.8
ug/L
2
2,4-Dichlorophenol
120-83-2
8270E
ND
8.0
1.0
ug/L
2
Diethylphthalate
84-66-2
8270E
ND
4.0
0.50
ug/L
2
Dimethyl phthalate
131-11-3
8270E
ND
4.0
0.50
ug/L
2
2,4-Dimethylphenol
105-67-9
8270E
ND
4.0
1.0
ug/L
2
Di-n-butyl phthalate
84-74-2
8270E
ND
4.0
0.50
ug/L
2
4,6-Dinitro-2-methylphenol
534-52-1
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrophenol
51-28-5
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrotoluene
121-14-2
8270E
ND
8.0
0.50
ug/L
2
2,6-Dinitrotoluene
606-20-2
8270E
ND
8.0
0.50
ug/L
2
Di-n-octylphthalate
117-84-0
8270E
ND
4.0
0.50
ug/L
2
bis(2-Ethylhexyl)phthalate
117-81-7
8270E
3.5 J
4.0
0.50
ug/L
2
Fluoranthene
206-44-0
8270E
ND
0.80
0.20
ug/L
2
Fluorene
86-73-7
8270E
ND
0.80
0.20
ug/L
2
Hexachlorobenzene
118-74-1
8270E
ND
4.0
0.50
ug/L
2
Hexachlorobutadiene
87-68-3
8270E
ND
4.0
0.50
ug/L
2
Hexachlorocyclopentadiene
77-47-4
8270E
ND
20
2.0
ug/L
2
LOQ = Limit of Quantitation B =
Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N =
Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W =
Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 63 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-008
Description: MW-8 Matrix: Aqueous
Date Sampled:08/18/2020 1235 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 3520C 8270E 1 08/26/2020 1714 SCD 08/24/2020 1530 64482
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Hexachloroethane
67-72-1
8270E
ND
4.0
1.0
ug/L
2
Indeno(1,2,3-c,d)pyrene
193-39-5
8270E
ND
0.80
0.20
ug/L
2
Isophorone
78-59-1
8270E
ND
4.0
0.50
ug/L
2
2-Methylnaphthalene
91-57-6
8270E
ND
0.80
0.20
ug/L
2
2-Methylphenol
95-48-7
8270E
ND
4.0
1.0
ug/L
2
3+4-Methylphenol
106-44-5
8270E
ND
4.0
1.5
ug/L
2
Naphthalene
91-20-3
8270E
ND
0.80
0.20
ug/L
2
2-Nitroaniline
88-74-4
8270E
ND
8.0
0.50
ug/L
2
3-Nitroaniline
99-09-2
8270E
ND
8.0
1.0
ug/L
2
4-Nitroaniline
100-01-6
8270E
ND
8.0
1.5
ug/L
2
Nitrobenzene
98-95-3
8270E
ND
4.0
1.5
ug/L
2
2-Nitrophenol
88-75-5
8270E
ND
4.0
1.0
ug/L
2
4-Nitrophenol
100-02-7
8270E
ND
20
2.0
ug/L
2
N-Nitrosodi-n-propylamine
621-64-7
8270E
ND
4.0
0.50
ug/L
2
N-Nitrosodiphenylamine (Diphenylamine)
86-30-6
8270E
ND
4.0
0.50
ug/L
2
Pentachlorophenol
87-86-5
8270E
ND
20
2.0
ug/L
2
Phenanthrene
85-01-8
8270E
ND
0.80
0.20
ug/L
2
Phenol
108-95-2
8270E
ND
4.0
0.50
ug/L
2
Pyrene
129-00-0
8270E
ND
0.80
0.20
ug/L
2
2,4,5-Trichlorophenol
95-95-4
8270E
ND
4.0
0.50
ug/L
2
2,4,6-Trichlorophenol
88-06-2
8270E
ND
4.0
0.50
ug/L
2
Run 2 Acceptance
Surrogate
Q % Recovery Limits
2-Fluorobiphenyl
78
37-129
2-Fluorophenol
55
24-127
Nitrobenzene-d5
76
38-127
Phenol-d5
64
28-128
Terphenyl-d14
80
10-148
2,4,6-Tribromophenol
67
35-144
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 64 of 118

MADEP EPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-008
Description: MW-8 Matrix: Aqueous
Date Sampled:08/18/2020 1235 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 08/31/2020 0910 JJG 08/21/2020 0916 64259
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C11 - C22 Aromatics MADEP-EPH-04 ND 94 94 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
o - Terphenyl (aromatic)
2-Fluorobiphenyl (fractionation 1)
2-Bromonaphthalene (fractionation 2)
85 40-140
108 40-140
90 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 65 of 118

MADEP EPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-008
Description: MW-8 Matrix: Aqueous
Date Sampled:08/18/2020 1235 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 08/31/2020 0511 JJG 08/21/2020 0916 64258
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C18 Aliphatics MADEP-EPH-04 ND 94 94 ug/L 1
C19 - C36 Aliphatics MADEP-EPH-04 ND 94 94 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
1-Chloro-octadecane (aliphatic)
65 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 66 of 118

MADEP VPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-008
Description: MW-8 Matrix: Aqueous
Date Sampled:08/18/2020 1235 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201847 ECB 64343
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C5 - C8 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
C9 - C12 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (FID)
106 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 67 of 118

MADEP VPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-008
Description: MW-8 Matrix: Aqueous
Date Sampled:08/18/2020 1235 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201847 ECB 64344
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C10 Aromatics MADEP-VPH-18- 10 J 25 5.0 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (PID)
102 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 68 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-009
Description: MW-9 Matrix: Aqueous
Date Sampled:08/18/2020 1410 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
1 5030B 8260D
1 08/25/20201651 JM1
64627
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acetone
67-64-1
8260D
7.8 J
10
4.0
ug/L
1
Benzene
71-43-2
8260D
ND
0.50
0.40
ug/L
1
Bromodichloromethane
75-27-4
8260D
ND
0.50
0.40
ug/L
1
Bromoform
75-25-2
8260D
ND
0.50
0.40
ug/L
1
Bromomethane (Methyl bromide)
74-83-9
8260D
ND
0.50
0.40
ug/L
1
2-Butanone (MEK)
78-93-3
8260D
ND
10
2.0
ug/L
1
Carbon disulfide
75-15-0
8260D
ND
0.50
0.40
ug/L
1
Carbon tetrachloride
56-23-5
8260D
ND
0.50
0.40
ug/L
1
Chlorobenzene
108-90-7
8260D
ND
0.50
0.40
ug/L
1
Chloroethane
75-00-3
8260D
ND
0.50
0.40
ug/L
1
Chloroform
67-66-3
8260D
ND
0.50
0.40
ug/L
1
Chloromethane (Methyl chloride)
74-87-3
8260D
ND
0.50
0.40
ug/L
1
Cyclohexane
110-82-7
8260D
1.0
0.50
0.40
ug/L
1
1,2-Dibromo-3-chloropropane (DBCP)
96-12-8
8260D
ND
0.50
0.40
ug/L
1
Dibromochloromethane
124-48-1
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromoethane (EDB)
106-93-4
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichlorobenzene
95-50-1
8260D
ND
0.50
0.40
ug/L
1
1,3-Dichlorobenzene
541-73-1
8260D
ND
0.50
0.40
ug/L
1
1,4-Dichlorobenzene
106-46-7
8260D
ND
0.50
0.40
ug/L
1
Dichlorodifluoromethane
75-71-8
8260D
ND
0.50
0.40
ug/L
1
1,1-Dichloroethane
75-34-3
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloroethane
107-06-2
8260D
ND
0.50
0.40
ug/L
1
1, 1 -Dichloroethene
75-35-4
8260D
ND
0.50
0.40
ug/L
1
cis- 1,2-Dichloroethene
156-59-2
8260D
ND
0.50
0.40
ug/L
1
trans-1,2-Dichloroethene
156-60-5
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloropropane
78-87-5
8260D
ND
0.50
0.40
ug/L
1
cis- 1,3-Dichloropropene
10061-01-5
8260D
ND
0.50
0.40
ug/L
1
trans-1,3-Dichloropropene
10061-02-6
8260D
ND
0.50
0.40
ug/L
1
Ethylbenzene
100-41-4
8260D
ND
0.50
0.40
ug/L
1
2-Hexanone
591-78-6
8260D
ND
10
2.0
ug/L
1
Isopropylbenzene
98-82-8
8260D
1.2
0.50
0.40
ug/L
1
Methyl acetate
79-20-9
8260D
ND
1.0
0.40
ug/L
1
Methyl tertiary butyl ether (MTBE)
1634-04-4
8260D
ND
0.50
0.40
ug/L
1
4-Methyl-2-pentanone
108-10-1
8260D
ND
10
2.0
ug/L
1
Methylcyclohexane
108-87-2
8260D
0.86 J
5.0
0.40
ug/L
1
Methylene chloride
75-09-2
8260D
ND
0.50
0.40
ug/L
1
Styrene
100-42-5
8260D
ND
0.50
0.41
ug/L
1
1,1,2,2-Tetrachloroethane
79-34-5
8260D
ND
0.50
0.40
ug/L
1
Tetrachloroethene
127-18-4
8260D
ND
0.50
0.40
ug/L
1
Toluene
108-88-3
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloro-1,2,2-Trifluoroethane
76-13-1
8260D
ND
1.0
0.42
ug/L
1
1,2,4-Trichlorobenzene
120-82-1
8260D
ND
0.50
0.40
ug/L
1
1,1,1-Trichloroethane
71-55-6
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloroethane
79-00-5
8260D
ND
0.50
0.40
ug/L
1
LOQ = Limit of Quantitation B = Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 69 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-009
Description: MW-9 Matrix: Aqueous
Date Sampled:08/18/2020 1410 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 5030B 8260D 1 08/25/20201651 JM1 64627
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Trichloroethene
79-01-6
8260D
ND
0.50
0.40
ug/L
1
Trichlorofluoromethane
75-69-4
8260D
ND
0.50
0.40
ug/L
1
Vinyl chloride
75-01-4
8260D
ND
0.50
0.40
ug/L
1
Xylenes (total)
1330-20-7
8260D
ND
1.0
0.40
ug/L
1
Run 1 Acceptance
Surrogate
Q % Recovery Limits
Bromofluorobenzene
1,2-Dichloroethane-d4
Toluene-d8
103 70-130
103 70-130
101 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 70 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-009
Description: MW-9 Matrix: Aqueous
Date Sampled:08/18/2020 1410 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method
Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
2 3520C
8270E
1 08/26/2020 1739 SCD
08/24/2020 1530 64482
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acenaphthene
83-32-9
8270E
0.77 J
0.80
0.20
ug/L
2
Acenaphthylene
208-96-8
8270E
ND
0.80
0.20
ug/L
2
Acetophenone
98-86-2
8270E
ND
4.0
0.50
ug/L
2
Anthracene
120-12-7
8270E
ND
0.80
0.20
ug/L
2
Atrazine
1912-24-9
8270E
ND
4.0
0.50
ug/L
2
Benzaldehyde
100-52-7
8270E
ND
8.0
0.50
ug/L
2
Benzo(a)anthracene
56-55-3
8270E
ND
0.80
0.20
ug/L
2
Benzo(a)pyrene
50-32-8
8270E
ND
0.80
0.20
ug/L
2
Benzo(b)fluoranthene
205-99-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(g,h,i)perylene
191-24-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(k)fluoranthene
207-08-9
8270E
ND
0.80
0.20
ug/L
2
1,1'-Biphenyl
92-52-4
8270E
ND
4.0
0.50
ug/L
2
4-Bromophenyl phenyl ether
101-55-3
8270E
ND
4.0
0.50
ug/L
2
Butyl benzyl phthalate
85-68-7
8270E
ND
4.0
0.50
ug/L
2
Caprolactam
105-60-2
8270E
4.1 BJ
8.0
1.0
ug/L
2
Carbazole
86-74-8
8270E
ND
4.0
0.50
ug/L
2
bis (2-Chloro-1-methylethyl) ether
108-60-1
8270E
ND
4.0
0.50
ug/L
2
4-Chloro-3-methyl phenol
59-50-7
8270E
ND
4.0
0.50
ug/L
2
4-Chloroaniline
106-47-8
8270E
ND
8.0
0.50
ug/L
2
bis(2-Chloroethoxy)methane
111-91-1
8270E
ND
4.0
0.50
ug/L
2
bis(2-Chloroethyl)ether
111-44-4
8270E
ND
4.0
0.50
ug/L
2
2-Chloronaphthalene
91-58-7
8270E
ND
4.0
0.50
ug/L
2
2-Chlorophenol
95-57-8
8270E
ND
4.0
0.50
ug/L
2
4-Chlorophenyl phenyl ether
7005-72-3
8270E
ND
4.0
0.50
ug/L
2
Chrysene
218-01-9
8270E
ND
0.80
0.20
ug/L
2
Dibenzo(a,h)anthracene
53-70-3
8270E
ND
0.80
0.20
ug/L
2
Dibenzofuran
132-64-9
8270E
ND
4.0
0.50
ug/L
2
3,3'-Dichlorobenzidine
91-94-1
8270E
ND
4.0
1.8
ug/L
2
2,4-Dichlorophenol
120-83-2
8270E
ND
8.0
1.0
ug/L
2
Diethylphthalate
84-66-2
8270E
ND
4.0
0.50
ug/L
2
Dimethyl phthalate
131-11-3
8270E
ND
4.0
0.50
ug/L
2
2,4-Dimethylphenol
105-67-9
8270E
ND
4.0
1.0
ug/L
2
Di-n-butyl phthalate
84-74-2
8270E
ND
4.0
0.50
ug/L
2
4,6-Dinitro-2-methylphenol
534-52-1
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrophenol
51-28-5
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrotoluene
121-14-2
8270E
ND
8.0
0.50
ug/L
2
2,6-Dinitrotoluene
606-20-2
8270E
ND
8.0
0.50
ug/L
2
Di-n-octylphthalate
117-84-0
8270E
ND
4.0
0.50
ug/L
2
bis(2-Ethylhexyl)phthalate
117-81-7
8270E
3.6 J
4.0
0.50
ug/L
2
Fluoranthene
206-44-0
8270E
ND
0.80
0.20
ug/L
2
Fluorene
86-73-7
8270E
0.91
0.80
0.20
ug/L
2
Hexachlorobenzene
118-74-1
8270E
ND
4.0
0.50
ug/L
2
Hexachlorobutadiene
87-68-3
8270E
ND
4.0
0.50
ug/L
2
Hexachlorocyclopentadiene
77-47-4
8270E
ND
20
2.0
ug/L
2
LOQ = Limit of Quantitation B =
Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N =
Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W =
Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 71 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-009
Description: MW-9 Matrix: Aqueous
Date Sampled:08/18/2020 1410 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 3520C 8270E 1 08/26/2020 1739 SCD 08/24/2020 1530 64482
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Hexachloroethane
67-72-1
8270E
ND
4.0
1.0
ug/L
2
Indeno(1,2,3-c,d)pyrene
193-39-5
8270E
ND
0.80
0.20
ug/L
2
Isophorone
78-59-1
8270E
ND
4.0
0.50
ug/L
2
2-Methylnaphthalene
91-57-6
8270E
ND
0.80
0.20
ug/L
2
2-Methylphenol
95-48-7
8270E
ND
4.0
1.0
ug/L
2
3+4-Methylphenol
106-44-5
8270E
ND
4.0
1.5
ug/L
2
Naphthalene
91-20-3
8270E
ND
0.80
0.20
ug/L
2
2-Nitroaniline
88-74-4
8270E
ND
8.0
0.50
ug/L
2
3-Nitroaniline
99-09-2
8270E
ND
8.0
1.0
ug/L
2
4-Nitroaniline
100-01-6
8270E
ND
8.0
1.5
ug/L
2
Nitrobenzene
98-95-3
8270E
ND
4.0
1.5
ug/L
2
2-Nitrophenol
88-75-5
8270E
ND
4.0
1.0
ug/L
2
4-Nitrophenol
100-02-7
8270E
ND
20
2.0
ug/L
2
N-Nitrosodi-n-propylamine
621-64-7
8270E
ND
4.0
0.50
ug/L
2
N-Nitrosodiphenylamine (Diphenylamine)
86-30-6
8270E
ND
4.0
0.50
ug/L
2
Pentachlorophenol
87-86-5
8270E
ND
20
2.0
ug/L
2
Phenanthrene
85-01-8
8270E
ND
0.80
0.20
ug/L
2
Phenol
108-95-2
8270E
ND
4.0
0.50
ug/L
2
Pyrene
129-00-0
8270E
ND
0.80
0.20
ug/L
2
2,4,5-Trichlorophenol
95-95-4
8270E
ND
4.0
0.50
ug/L
2
2,4,6-Trichlorophenol
88-06-2
8270E
ND
4.0
0.50
ug/L
2
Run 2 Acceptance
Surrogate
Q % Recovery Limits
2-Fluorobiphenyl
77
37-129
2-Fluorophenol
46
24-127
Nitrobenzene-d5
78
38-127
Phenol-d5
61
28-128
Terphenyl-d14
79
10-148
2,4,6-Tribromophenol
67
35-144
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 72 of 118

MADEP EPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-009
Description: MW-9 Matrix: Aqueous
Date Sampled:08/18/2020 1410 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 09/01/2020 1927 JJG 08/21/2020 0916 64259
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C11 - C22 Aromatics MADEP-EPH-04 120 93 93 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
o - Terphenyl (aromatic)
2-Fluorobiphenyl (fractionation 1)
2-Bromonaphthalene (fractionation 2)
96 40-140
124 40-140
109 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 73 of 118

MADEP EPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-009
Description: MW-9 Matrix: Aqueous
Date Sampled:08/18/2020 1410 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 08/31/2020 0541 JJG 08/21/2020 0916 64258
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C18 Aliphatics MADEP-EPH-04 ND 93 93 ug/L 1
C19 - C36 Aliphatics MADEP-EPH-04 ND 93 93 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
1-Chloro-octadecane (aliphatic)
44 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 74 of 118

MADEP VPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-009
Description: MW-9 Matrix: Aqueous
Date Sampled:08/18/2020 1410 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201915 ECB 64343
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C5 - C8 Aliphatics MADEP-VPH-18- 45 J 75 15 ug/L 1
C9 - C12 Aliphatics MADEP-VPH-18- 51 J 75 15 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (FID)
100 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 75 of 118

MADEP VPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-009
Description: MW-9 Matrix: Aqueous
Date Sampled:08/18/2020 1410 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201915 ECB 64344
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C10 Aromatics MADEP-VPH-18- 77 25 5.0 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (PID)
100 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 76 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-010
Description: MW-10 Matrix: Aqueous
Date Sampled:08/18/2020 1445 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
1 5030B 8260D
1 08/25/20201713 JM1
64627
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acetone
67-64-1
8260D
ND
10
4.0
ug/L
1
Benzene
71-43-2
8260D
ND
0.50
0.40
ug/L
1
Bromodichloromethane
75-27-4
8260D
ND
0.50
0.40
ug/L
1
Bromoform
75-25-2
8260D
ND
0.50
0.40
ug/L
1
Bromomethane (Methyl bromide)
74-83-9
8260D
ND
0.50
0.40
ug/L
1
2-Butanone (MEK)
78-93-3
8260D
ND
10
2.0
ug/L
1
Carbon disulfide
75-15-0
8260D
ND
0.50
0.40
ug/L
1
Carbon tetrachloride
56-23-5
8260D
ND
0.50
0.40
ug/L
1
Chlorobenzene
108-90-7
8260D
ND
0.50
0.40
ug/L
1
Chloroethane
75-00-3
8260D
ND
0.50
0.40
ug/L
1
Chloroform
67-66-3
8260D
ND
0.50
0.40
ug/L
1
Chloromethane (Methyl chloride)
74-87-3
8260D
ND
0.50
0.40
ug/L
1
Cyclohexane
110-82-7
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromo-3-chloropropane (DBCP)
96-12-8
8260D
ND
0.50
0.40
ug/L
1
Dibromochloromethane
124-48-1
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromoethane (EDB)
106-93-4
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichlorobenzene
95-50-1
8260D
ND
0.50
0.40
ug/L
1
1,3-Dichlorobenzene
541-73-1
8260D
ND
0.50
0.40
ug/L
1
1,4-Dichlorobenzene
106-46-7
8260D
ND
0.50
0.40
ug/L
1
Dichlorodifluoromethane
75-71-8
8260D
ND
0.50
0.40
ug/L
1
1,1-Dichloroethane
75-34-3
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloroethane
107-06-2
8260D
ND
0.50
0.40
ug/L
1
1, 1 -Dichloroethene
75-35-4
8260D
ND
0.50
0.40
ug/L
1
cis- 1,2-Dichloroethene
156-59-2
8260D
ND
0.50
0.40
ug/L
1
trans-1,2-Dichloroethene
156-60-5
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloropropane
78-87-5
8260D
ND
0.50
0.40
ug/L
1
cis- 1,3-Dichloropropene
10061-01-5
8260D
ND
0.50
0.40
ug/L
1
trans-1,3-Dichloropropene
10061-02-6
8260D
ND
0.50
0.40
ug/L
1
Ethylbenzene
100-41-4
8260D
ND
0.50
0.40
ug/L
1
2-Hexanone
591-78-6
8260D
ND
10
2.0
ug/L
1
Isopropylbenzene
98-82-8
8260D
ND
0.50
0.40
ug/L
1
Methyl acetate
79-20-9
8260D
ND
1.0
0.40
ug/L
1
Methyl tertiary butyl ether (MTBE)
1634-04-4
8260D
ND
0.50
0.40
ug/L
1
4-Methyl-2-pentanone
108-10-1
8260D
ND
10
2.0
ug/L
1
Methylcyclohexane
108-87-2
8260D
ND
5.0
0.40
ug/L
1
Methylene chloride
75-09-2
8260D
ND
0.50
0.40
ug/L
1
Styrene
100-42-5
8260D
ND
0.50
0.41
ug/L
1
1,1,2,2-Tetrachloroethane
79-34-5
8260D
ND
0.50
0.40
ug/L
1
Tetrachloroethene
127-18-4
8260D
ND
0.50
0.40
ug/L
1
Toluene
108-88-3
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloro-1,2,2-Trifluoroethane
76-13-1
8260D
ND
1.0
0.42
ug/L
1
1,2,4-Trichlorobenzene
120-82-1
8260D
ND
0.50
0.40
ug/L
1
1,1,1-Trichloroethane
71-55-6
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloroethane
79-00-5
8260D
ND
0.50
0.40
ug/L
1
LOQ = Limit of Quantitation B = Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 77 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-010
Description: MW-10 Matrix: Aqueous
Date Sampled:08/18/2020 1445 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 5030B 8260D 1 08/25/20201713 JM1 64627
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Trichloroethene
79-01-6
8260D
ND
0.50
0.40
ug/L
1
Trichlorofluoromethane
75-69-4
8260D
ND
0.50
0.40
ug/L
1
Vinyl chloride
75-01-4
8260D
ND
0.50
0.40
ug/L
1
Xylenes (total)
1330-20-7
8260D
ND
1.0
0.40
ug/L
1
Run 1 Acceptance
Surrogate
Q % Recovery Limits
Bromofluorobenzene
1,2-Dichloroethane-d4
Toluene-d8
99 70-130
102 70-130
102 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 78 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-010
Description: MW-10 Matrix: Aqueous
Date Sampled:08/18/2020 1445 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method
Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
2 3520C
8270E
1 08/26/2020 1804 SCD
08/24/2020 1530 64482
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acenaphthene
83-32-9
8270E
ND
0.80
0.20
ug/L
2
Acenaphthylene
208-96-8
8270E
ND
0.80
0.20
ug/L
2
Acetophenone
98-86-2
8270E
ND
4.0
0.50
ug/L
2
Anthracene
120-12-7
8270E
ND
0.80
0.20
ug/L
2
Atrazine
1912-24-9
8270E
ND
4.0
0.50
ug/L
2
Benzaldehyde
100-52-7
8270E
ND
8.0
0.50
ug/L
2
Benzo(a)anthracene
56-55-3
8270E
ND
0.80
0.20
ug/L
2
Benzo(a)pyrene
50-32-8
8270E
ND
0.80
0.20
ug/L
2
Benzo(b)fluoranthene
205-99-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(g,h,i)perylene
191-24-2
8270E
ND
0.80
0.20
ug/L
2
Benzo(k)fluoranthene
207-08-9
8270E
ND
0.80
0.20
ug/L
2
1,1'-Biphenyl
92-52-4
8270E
ND
4.0
0.50
ug/L
2
4-Bromophenyl phenyl ether
101-55-3
8270E
ND
4.0
0.50
ug/L
2
Butyl benzyl phthalate
85-68-7
8270E
ND
4.0
0.50
ug/L
2
Caprolactam
105-60-2
8270E
ND
8.0
1.0
ug/L
2
Carbazole
86-74-8
8270E
ND
4.0
0.50
ug/L
2
bis (2-Chloro-1-methylethyl) ether
108-60-1
8270E
ND
4.0
0.50
ug/L
2
4-Chloro-3-methyl phenol
59-50-7
8270E
ND
4.0
0.50
ug/L
2
4-Chloroaniline
106-47-8
8270E
ND
8.0
0.50
ug/L
2
bis(2-Chloroethoxy)methane
111-91-1
8270E
ND
4.0
0.50
ug/L
2
bis(2-Chloroethyl)ether
111-44-4
8270E
ND
4.0
0.50
ug/L
2
2-Chloronaphthalene
91-58-7
8270E
ND
4.0
0.50
ug/L
2
2-Chlorophenol
95-57-8
8270E
ND
4.0
0.50
ug/L
2
4-Chlorophenyl phenyl ether
7005-72-3
8270E
ND
4.0
0.50
ug/L
2
Chrysene
218-01-9
8270E
ND
0.80
0.20
ug/L
2
Dibenzo(a,h)anthracene
53-70-3
8270E
ND
0.80
0.20
ug/L
2
Dibenzofuran
132-64-9
8270E
ND
4.0
0.50
ug/L
2
3,3'-Dichlorobenzidine
91-94-1
8270E
ND
4.0
1.8
ug/L
2
2,4-Dichlorophenol
120-83-2
8270E
ND
8.0
1.0
ug/L
2
Diethylphthalate
84-66-2
8270E
ND
4.0
0.50
ug/L
2
Dimethyl phthalate
131-11-3
8270E
ND
4.0
0.50
ug/L
2
2,4-Dimethylphenol
105-67-9
8270E
ND
4.0
1.0
ug/L
2
Di-n-butyl phthalate
84-74-2
8270E
ND
4.0
0.50
ug/L
2
4,6-Dinitro-2-methylphenol
534-52-1
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrophenol
51-28-5
8270E
ND
20
1.0
ug/L
2
2,4-Dinitrotoluene
121-14-2
8270E
ND
8.0
0.50
ug/L
2
2,6-Dinitrotoluene
606-20-2
8270E
ND
8.0
0.50
ug/L
2
Di-n-octylphthalate
117-84-0
8270E
ND
4.0
0.50
ug/L
2
bis(2-Ethylhexyl)phthalate
117-81-7
8270E
3.4 J
4.0
0.50
ug/L
2
Fluoranthene
206-44-0
8270E
ND
0.80
0.20
ug/L
2
Fluorene
86-73-7
8270E
ND
0.80
0.20
ug/L
2
Hexachlorobenzene
118-74-1
8270E
ND
4.0
0.50
ug/L
2
Hexachlorobutadiene
87-68-3
8270E
ND
4.0
0.50
ug/L
2
Hexachlorocyclopentadiene
77-47-4
8270E
ND
20
2.0
ug/L
2
LOQ = Limit of Quantitation B =
Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N =
Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W =
Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 79 of 118

Semivolatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-010
Description: MW-10 Matrix: Aqueous
Date Sampled:08/18/2020 1445 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
2 3520C 8270E 1 08/26/2020 1804 SCD 08/24/2020 1530 64482
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Hexachloroethane
67-72-1
8270E
ND
4.0
1.0
ug/L
2
Indeno(1,2,3-c,d)pyrene
193-39-5
8270E
ND
0.80
0.20
ug/L
2
Isophorone
78-59-1
8270E
ND
4.0
0.50
ug/L
2
2-Methylnaphthalene
91-57-6
8270E
ND
0.80
0.20
ug/L
2
2-Methylphenol
95-48-7
8270E
ND
4.0
1.0
ug/L
2
3+4-Methylphenol
106-44-5
8270E
ND
4.0
1.5
ug/L
2
Naphthalene
91-20-3
8270E
ND
0.80
0.20
ug/L
2
2-Nitroaniline
88-74-4
8270E
ND
8.0
0.50
ug/L
2
3-Nitroaniline
99-09-2
8270E
ND
8.0
1.0
ug/L
2
4-Nitroaniline
100-01-6
8270E
ND
8.0
1.5
ug/L
2
Nitrobenzene
98-95-3
8270E
ND
4.0
1.5
ug/L
2
2-Nitrophenol
88-75-5
8270E
ND
4.0
1.0
ug/L
2
4-Nitrophenol
100-02-7
8270E
ND
20
2.0
ug/L
2
N-Nitrosodi-n-propylamine
621-64-7
8270E
ND
4.0
0.50
ug/L
2
N-Nitrosodiphenylamine (Diphenylamine)
86-30-6
8270E
ND
4.0
0.50
ug/L
2
Pentachlorophenol
87-86-5
8270E
ND
20
2.0
ug/L
2
Phenanthrene
85-01-8
8270E
ND
0.80
0.20
ug/L
2
Phenol
108-95-2
8270E
ND
4.0
0.50
ug/L
2
Pyrene
129-00-0
8270E
ND
0.80
0.20
ug/L
2
2,4,5-Trichlorophenol
95-95-4
8270E
ND
4.0
0.50
ug/L
2
2,4,6-Trichlorophenol
88-06-2
8270E
ND
4.0
0.50
ug/L
2
Run 2 Acceptance
Surrogate
Q % Recovery Limits
2-Fluorobiphenyl
77
37-129
2-Fluorophenol
51
24-127
Nitrobenzene-d5
75
38-127
Phenol-d5
70
28-128
Terphenyl-d14
79
10-148
2,4,6-Tribromophenol
65
35-144
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 80 of 118

MADEP EPH (aliphatics) - Unfractionated
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-010
Description: MW-10 Matrix: Aqueous
Date Sampled:08/18/2020 1445 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution
Analysis Date Analyst
Prep Date
Batch
1 MADEP-EPH- MADEP-EPH-04 1
08/31/2020 0041 JJG
08/21/2020 0916
64251
CAS Analytical
Parameter Number Method
Result Q
LOQ DL Units Run
C19 - C36 Aliphatics - Unfractionated
MADEP-EPH-04
ND
93 93 ug/L 1
C9 - C18 Aliphatics - Unfractionated
MADEP-EPH-04
ND
93 93 ug/L 1
Run 1
Acceptance
Surrogate Q % Recovery
Limits
1-Chloro-octadecane (aliphatic) - Unfractionated 76
40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 81 of 118

MADEP EPH (aromatics) - Unfractionated
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-010
Description: MW-10 Matrix: Aqueous
Date Sampled:08/18/2020 1445 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 MADEP-EPH- MADEP-EPH-04 1 08/31/2020 0041 JJG 08/21/2020 0916 64252
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C11 - C22 Aromatics - Unfractionated MADEP-EPH-04 ND 93 93 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
o - Terphenyl (aromatic) - Unfractionated 101 40-140
2-Fluorobiphenyl (fractionation 1) 123 40-140
2-Bromonaphthalene (fractionation 2) 109 40-140
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 82 of 118

MADEP VPH (aliphatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-010
Description: MW-10 Matrix: Aqueous
Date Sampled:08/18/2020 1445 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201944 ECB 64343
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C5 - C8 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
C9 - C12 Aliphatics MADEP-VPH-18- ND 75 15 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (FID)
102 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 83 of 118

MADEP VPH (aromatics)
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-010
Description: MW-10 Matrix: Aqueous
Date Sampled:08/18/2020 1445 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 VPH MADEP-VPH-18-2.1 1 08/21/20201944 ECB 64344
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
C9 - C10 Aromatics MADEP-VPH-18- ND 25 5.0 ug/L 1
Run 1 Acceptance
Surrogate Q % Recovery Limits
2,5-Dibromotoluene (PID)
102 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 84 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-011
Description: TB1 Matrix: Aqueous
Date Sampled:08/18/2020 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
1 5030B 8260D
1 08/25/20201140 JM1
64627
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acetone
67-64-1
8260D
ND
10
4.0
ug/L
1
Benzene
71-43-2
8260D
ND
0.50
0.40
ug/L
1
Bromodichloromethane
75-27-4
8260D
ND
0.50
0.40
ug/L
1
Bromoform
75-25-2
8260D
ND
0.50
0.40
ug/L
1
Bromomethane (Methyl bromide)
74-83-9
8260D
ND
0.50
0.40
ug/L
1
2-Butanone (MEK)
78-93-3
8260D
ND
10
2.0
ug/L
1
Carbon disulfide
75-15-0
8260D
ND
0.50
0.40
ug/L
1
Carbon tetrachloride
56-23-5
8260D
ND
0.50
0.40
ug/L
1
Chlorobenzene
108-90-7
8260D
ND
0.50
0.40
ug/L
1
Chloroethane
75-00-3
8260D
ND
0.50
0.40
ug/L
1
Chloroform
67-66-3
8260D
ND
0.50
0.40
ug/L
1
Chloromethane (Methyl chloride)
74-87-3
8260D
ND
0.50
0.40
ug/L
1
Cyclohexane
110-82-7
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromo-3-chloropropane (DBCP)
96-12-8
8260D
ND
0.50
0.40
ug/L
1
Dibromochloromethane
124-48-1
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromoethane (EDB)
106-93-4
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichlorobenzene
95-50-1
8260D
ND
0.50
0.40
ug/L
1
1,3-Dichlorobenzene
541-73-1
8260D
ND
0.50
0.40
ug/L
1
1,4-Dichlorobenzene
106-46-7
8260D
ND
0.50
0.40
ug/L
1
Dichlorodifluoromethane
75-71-8
8260D
ND
0.50
0.40
ug/L
1
1,1-Dichloroethane
75-34-3
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloroethane
107-06-2
8260D
ND
0.50
0.40
ug/L
1
1, 1 -Dichloroethene
75-35-4
8260D
ND
0.50
0.40
ug/L
1
cis- 1,2-Dichloroethene
156-59-2
8260D
ND
0.50
0.40
ug/L
1
trans-1,2-Dichloroethene
156-60-5
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloropropane
78-87-5
8260D
ND
0.50
0.40
ug/L
1
cis- 1,3-Dichloropropene
10061-01-5
8260D
ND
0.50
0.40
ug/L
1
trans-1,3-Dichloropropene
10061-02-6
8260D
ND
0.50
0.40
ug/L
1
Ethylbenzene
100-41-4
8260D
ND
0.50
0.40
ug/L
1
2-Hexanone
591-78-6
8260D
ND
10
2.0
ug/L
1
Isopropylbenzene
98-82-8
8260D
ND
0.50
0.40
ug/L
1
Methyl acetate
79-20-9
8260D
ND
1.0
0.40
ug/L
1
Methyl tertiary butyl ether (MTBE)
1634-04-4
8260D
ND
0.50
0.40
ug/L
1
4-Methyl-2-pentanone
108-10-1
8260D
ND
10
2.0
ug/L
1
Methylcyclohexane
108-87-2
8260D
ND
5.0
0.40
ug/L
1
Methylene chloride
75-09-2
8260D
ND
0.50
0.40
ug/L
1
Styrene
100-42-5
8260D
ND
0.50
0.41
ug/L
1
1,1,2,2-Tetrachloroethane
79-34-5
8260D
ND
0.50
0.40
ug/L
1
Tetrachloroethene
127-18-4
8260D
ND
0.50
0.40
ug/L
1
Toluene
108-88-3
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloro-1,2,2-Trifluoroethane
76-13-1
8260D
ND
1.0
0.42
ug/L
1
1,2,4-Trichlorobenzene
120-82-1
8260D
ND
0.50
0.40
ug/L
1
1,1,1-Trichloroethane
71-55-6
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloroethane
79-00-5
8260D
ND
0.50
0.40
ug/L
1
LOQ = Limit of Quantitation B = Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 85 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-011
Description: TB1 Matrix: Aqueous
Date Sampled:08/18/2020 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 5030B 8260D 1 08/25/20201140 JM1 64627
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Trichloroethene
79-01-6
8260D
ND
0.50
0.40
ug/L
1
Trichlorofluoromethane
75-69-4
8260D
ND
0.50
0.40
ug/L
1
Vinyl chloride
75-01-4
8260D
ND
0.50
0.40
ug/L
1
Xylenes (total)
1330-20-7
8260D
ND
1.0
0.40
ug/L
1
Run 1 Acceptance
Surrogate
Q % Recovery Limits
Bromofluorobenzene
1,2-Dichloroethane-d4
Toluene-d8
101 70-130
100 70-130
101 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 86 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-012
Description: TB2 Matrix: Aqueous
Date Sampled:08/18/2020 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method
Dilution Analysis Date Analyst
Prep Date
Batch
1 5030B 8260D
1 08/25/20201202 JM1
64627
CAS
Analytical
Parameter
Number
Method
Result Q
LOQ
DL
Units
Run
Acetone
67-64-1
8260D
ND
10
4.0
ug/L
1
Benzene
71-43-2
8260D
ND
0.50
0.40
ug/L
1
Bromodichloromethane
75-27-4
8260D
ND
0.50
0.40
ug/L
1
Bromoform
75-25-2
8260D
ND
0.50
0.40
ug/L
1
Bromomethane (Methyl bromide)
74-83-9
8260D
ND
0.50
0.40
ug/L
1
2-Butanone (MEK)
78-93-3
8260D
ND
10
2.0
ug/L
1
Carbon disulfide
75-15-0
8260D
ND
0.50
0.40
ug/L
1
Carbon tetrachloride
56-23-5
8260D
ND
0.50
0.40
ug/L
1
Chlorobenzene
108-90-7
8260D
ND
0.50
0.40
ug/L
1
Chloroethane
75-00-3
8260D
ND
0.50
0.40
ug/L
1
Chloroform
67-66-3
8260D
ND
0.50
0.40
ug/L
1
Chloromethane (Methyl chloride)
74-87-3
8260D
ND
0.50
0.40
ug/L
1
Cyclohexane
110-82-7
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromo-3-chloropropane (DBCP)
96-12-8
8260D
ND
0.50
0.40
ug/L
1
Dibromochloromethane
124-48-1
8260D
ND
0.50
0.40
ug/L
1
1,2-Dibromoethane (EDB)
106-93-4
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichlorobenzene
95-50-1
8260D
ND
0.50
0.40
ug/L
1
1,3-Dichlorobenzene
541-73-1
8260D
ND
0.50
0.40
ug/L
1
1,4-Dichlorobenzene
106-46-7
8260D
ND
0.50
0.40
ug/L
1
Dichlorodifluoromethane
75-71-8
8260D
ND
0.50
0.40
ug/L
1
1,1-Dichloroethane
75-34-3
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloroethane
107-06-2
8260D
ND
0.50
0.40
ug/L
1
1, 1 -Dichloroethene
75-35-4
8260D
ND
0.50
0.40
ug/L
1
cis- 1,2-Dichloroethene
156-59-2
8260D
ND
0.50
0.40
ug/L
1
trans-1,2-Dichloroethene
156-60-5
8260D
ND
0.50
0.40
ug/L
1
1,2-Dichloropropane
78-87-5
8260D
ND
0.50
0.40
ug/L
1
cis- 1,3-Dichloropropene
10061-01-5
8260D
ND
0.50
0.40
ug/L
1
trans-1,3-Dichloropropene
10061-02-6
8260D
ND
0.50
0.40
ug/L
1
Ethylbenzene
100-41-4
8260D
ND
0.50
0.40
ug/L
1
2-Hexanone
591-78-6
8260D
ND
10
2.0
ug/L
1
Isopropylbenzene
98-82-8
8260D
ND
0.50
0.40
ug/L
1
Methyl acetate
79-20-9
8260D
ND
1.0
0.40
ug/L
1
Methyl tertiary butyl ether (MTBE)
1634-04-4
8260D
ND
0.50
0.40
ug/L
1
4-Methyl-2-pentanone
108-10-1
8260D
ND
10
2.0
ug/L
1
Methylcyclohexane
108-87-2
8260D
ND
5.0
0.40
ug/L
1
Methylene chloride
75-09-2
8260D
ND
0.50
0.40
ug/L
1
Styrene
100-42-5
8260D
ND
0.50
0.41
ug/L
1
1,1,2,2-Tetrachloroethane
79-34-5
8260D
ND
0.50
0.40
ug/L
1
Tetrachloroethene
127-18-4
8260D
ND
0.50
0.40
ug/L
1
Toluene
108-88-3
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloro-1,2,2-Trifluoroethane
76-13-1
8260D
ND
1.0
0.42
ug/L
1
1,2,4-Trichlorobenzene
120-82-1
8260D
ND
0.50
0.40
ug/L
1
1,1,1-Trichloroethane
71-55-6
8260D
ND
0.50
0.40
ug/L
1
1,1,2-Trichloroethane
79-00-5
8260D
ND
0.50
0.40
ug/L
1
LOQ = Limit of Quantitation B = Detected in the method blank
E = Quantitation of
compound exceeded the calibration range
DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria
P = The RPD between two GC columns exceeds 40 %
J = Estimated result <
LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 87 of 118

Volatile Organic Compounds by GC/MS
Client:Terracon Consultants, Inc. Laboratory ID:VH19129-012
Description: TB2 Matrix: Aqueous
Date Sampled:08/18/2020 Project Name: NC DOT -Mt. Pleasant 2020
Date Received:08/19/2020 Project Number: 701177023
Run Prep Method Analytical Method Dilution Analysis Date Analyst Prep Date Batch
1 5030B 8260D 1 08/25/20201202 JM1 64627
CAS Analytical
Parameter Number Method Result Q LOQ DL Units Run
Trichloroethene
79-01-6
8260D
ND
0.50
0.40
ug/L
1
Trichlorofluoromethane
75-69-4
8260D
ND
0.50
0.40
ug/L
1
Vinyl chloride
75-01-4
8260D
ND
0.50
0.40
ug/L
1
Xylenes (total)
1330-20-7
8260D
ND
1.0
0.40
ug/L
1
Run 1 Acceptance
Surrogate
Q % Recovery Limits
Bromofluorobenzene
1,2-Dichloroethane-d4
Toluene-d8
99 70-130
99 70-130
101 70-130
LOQ = Limit of Quantitation B = Detected in the method blank E = Quantitation of compound exceeded the calibration range DL = Detection Limit
ND = Not detected at or above the DL N = Recovery is out of criteria P = The RPD between two GC columns exceeds 40 % J = Estimated result < LOQ and > DL
H = Out of holding time W = Reported on wet weight basis
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 88 of 118

QC Summary
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 89 of 118

Volatile Organic Compounds by GC/MS - MB
Sample ID: VQ64627-001 Matrix: Aqueous
Batch:64627 Prep Method: 5030E
Analytical Method: 8260D
Parameter
Result Q
Dil
LOQ
DL
Units
Analysis Date
Acetone
ND
1
10
4.0
ug/L
08/25/2020 1007
Benzene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Bromodichloromethane
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Bromoform
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Bromomethane (Methyl bromide)
ND
1
0.50
0.40
ug/L
08/25/2020 1007
2-Butanone (MEK)
ND
1
10
2.0
ug/L
08/25/2020 1007
Carbon disulfide
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Carbon tetrachloride
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Chlorobenzene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Chloroethane
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Chloroform
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Chloromethane (Methyl chloride)
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Cyclohexane
ND
1
0.50
0.40
ug/L
08/25/2020 1007
1,2-Dibromo-3-chloropropane (DBCP)
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Dibromochloromethane
ND
1
0.50
0.40
ug/L
08/25/2020 1007
1,2-Dibromoethane (EDB)
ND
1
0.50
0.40
ug/L
08/25/2020 1007
1,2-Dichlorobenzene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
1,3-Dichlorobenzene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
1,4-Dichlorobenzene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Dichlorodifluoromethane
ND
1
0.50
0.40
ug/L
08/25/2020 1007
1,1-Dichloroethane
ND
1
0.50
0.40
ug/L
08/25/2020 1007
1,2-Dichloroethane
ND
1
0.50
0.40
ug/L
08/25/2020 1007
1,1-Dichloroethene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
cis- 1,2-Dichloroethene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
trans- 1,2-Dichloroethene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
1,2-Dichloropropane
ND
1
0.50
0.40
ug/L
08/25/2020 1007
cis- 1,3-Dichloropropene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
trans- 1,3-Dichloropropene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Ethylbenzene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
2-Hexanone
ND
1
10
2.0
ug/L
08/25/2020 1007
Isopropylbenzene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Methyl acetate
ND
1
1.0
0.40
ug/L
08/25/2020 1007
Methyl tertiary butyl ether (MTBE)
ND
1
0.50
0.40
ug/L
08/25/2020 1007
4-Methyl-2-pentanone
ND
1
10
2.0
ug/L
08/25/2020 1007
Methylcyclohexane
ND
1
5.0
0.40
ug/L
08/25/2020 1007
Methylene chloride
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Styrene
ND
1
0.50
0.41
ug/L
08/25/2020 1007
1,1,2,2-Tetrachloroethane
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Tetrachloroethene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Toluene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
1,1,2-Trichloro-1,2,2-Trifluoroethane
ND
1
1.0
0.42
ug/L
08/25/2020 1007
1,2,4-Trichlorobenzene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
1, 1, 1 -Trichloroethane
ND
1
0.50
0.40
ug/L
08/25/2020 1007
1,1,2-Trichloroethane
ND
1
0.50
0.40
ug/L
08/25/2020 1007
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 90 of 118

Volatile Organic Compounds by GC/MS - MB
Sample ID: VQ64627-001 Matrix: Aqueous
Batch:64627 Prep Method: 5030E
Analytical Method: 8260D
Parameter
Result
Q Dil
LOQ
DL
Units
Analysis Date
Trichloroethene
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Trichlorofluoromethane
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Vinyl chloride
ND
1
0.50
0.40
ug/L
08/25/2020 1007
Xylenes (total)
ND
1
1.0
0.40
ug/L
08/25/2020 1007
Surrogate
Q % Rec
Acceptance
Limit
Bromofluorobenzene 101 70-130
1,2-Dichloroethane-d4 101 70-130
Toluene-d8 101 70-130
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 91 of 118

Volatile Organic Compounds by GC/MS - LCS
Sample ID: VQ64627-002
Matrix: Aqueous
Batch:64627
Prep Method:
5030E
Analytical Method: 8260D
Spike
Amount
Result
% Rec
Parameter
(ug/L)
(ug/L)
Q Dil
% Rec
Limit
Analysis Date
Acetone
100
110
1
105
60-140
08/25/2020 0922
Benzene
50
50
1
100
70-130
08/25/2020 0922
Bromodichloromethane
50
50
1
100
70-130
08/25/2020 0922
Bromoform
50
51
1
103
70-130
08/25/2020 0922
Bromomethane (Methyl bromide)
50
48
1
96
70-130
08/25/2020 0922
2-Butanone (MEK)
100
120
1
117
70-130
08/25/2020 0922
Carbon disulfide
50
48
1
96
70-130
08/25/2020 0922
Carbon tetrachloride
50
48
1
96
70-130
08/25/2020 0922
Chlorobenzene
50
50
1
100
70-130
08/25/2020 0922
Chloroethane
50
49
1
99
70-130
08/25/2020 0922
Chloroform
50
49
1
98
70-130
08/25/2020 0922
Chloromethane (Methyl chloride)
50
54
1
107
60-140
08/25/2020 0922
Cyclohexane
50
45
1
89
70-130
08/25/2020 0922
1,2-Dibromo-3-chloropropane (DBCP)
50
50
1
100
70-130
08/25/2020 0922
Dibromochloromethane
50
50
1
101
70-130
08/25/2020 0922
1,2-Dibromoethane (EDB)
50
50
1
100
70-130
08/25/2020 0922
1,2-Dichlorobenzene
50
49
1
99
70-130
08/25/2020 0922
1,3-Dichlorobenzene
50
50
1
100
70-130
08/25/2020 0922
1,4-Dichlorobenzene
50
49
1
97
70-130
08/25/2020 0922
Dichlorodifluoromethane
50
55
1
111
60-140
08/25/2020 0922
1,1-Dichloroethane
50
51
1
101
70-130
08/25/2020 0922
1,2-Dichloroethane
50
49
1
99
70-130
08/25/2020 0922
1,1-Dichloroethene
50
48
1
96
70-130
08/25/2020 0922
cis- 1,2-Dichloroethene
50
52
1
104
70-130
08/25/2020 0922
trans- 1,2-Dichloroethene
50
50
1
99
70-130
08/25/2020 0922
1,2-Dichloropropane
50
50
1
101
70-130
08/25/2020 0922
cis- 1,3-Dichloropropene
50
53
1
107
70-130
08/25/2020 0922
trans- 1,3-Dichloropropene
50
52
1
104
70-130
08/25/2020 0922
Ethylbenzene
50
52
1
103
70-130
08/25/2020 0922
2-Hexanone
100
110
1
109
70-130
08/25/2020 0922
Isopropylbenzene
50
53
1
106
70-130
08/25/2020 0922
Methyl acetate
50
58
1
116
70-130
08/25/2020 0922
Methyl tertiary butyl ether (MTBE)
50
54
1
107
70-130
08/25/2020 0922
4-Methyl-2-pentanone
100
110
1
107
70-130
08/25/2020 0922
Methylcyclohexane
50
47
1
95
70-130
08/25/2020 0922
Methylene chloride
50
49
1
98
70-130
08/25/2020 0922
Styrene
50
54
1
108
70-130
08/25/2020 0922
1,1,2,2-Tetrachloroethane
50
50
1
100
70-130
08/25/2020 0922
Tetrachloroethene
50
49
1
98
70-130
08/25/2020 0922
Toluene
50
51
1
103
70-130
08/25/2020 0922
1,1,2-Trichloro-1,2,2-Trifluoroethane
50
43
1
86
70-130
08/25/2020 0922
1,2,4-Trichlorobenzene
50
51
1
103
70-130
08/25/2020 0922
1,1,1-Trichloroethane
50
49
1
98
70-130
08/25/2020 0922
1,1,2-Trichloroethane
50
50
1
101
70-130
08/25/2020 0922
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 92 of 118

Volatile Organic Compounds by GC/MS - LCS
Sample ID: VQ64627-002
Matrix: Aqueous
Batch:64627
Prep Method: 5030E
Analytical Method: 8260D
Spike
Amount
Result
% Rec
Parameter
(ug/L)
(ug/L) Q
Dil % Rec
Limit
Analysis Date
Trichloroethene
50
50
1 100
70-130
08/25/2020 0922
Trichlorofluoromethane
50
46
1 92
70-130
08/25/2020 0922
Vinyl chloride
50
59
1 118
70-130
08/25/2020 0922
Xylenes (total)
100
110
1 106
70-130
08/25/2020 0922
Surrogate
Q % Rec
Acceptance
Limit
Bromofluorobenzene 102 70-130
1,2-Dichloroethane-d4 95 70-130
Toluene-d8 98 70-130
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 93 of 118

Semivolatile Organic Compounds by GC/MS - MB
Sample ID: VQ64482-001 Matrix: Aqueous
Batch:64482 Prep Method: 3520C
Analytical Method: 8270E Prep Date: 08/24/2020 1530
Parameter
Result Q
Dil
LOQ
DL
Units
Analysis Date
Acenaphthene
ND
1
0.80
0.20
ug/L
08/26/2020 1101
Acenaphthylene
ND
1
0.80
0.20
ug/L
08/26/2020 1101
Acetophenone
ND
1
4.0
0.50
ug/L
08/26/2020 1101
Anthracene
ND
1
0.80
0.20
ug/L
08/26/2020 1101
Atrazine
ND
1
4.0
0.50
ug/L
08/26/2020 1101
Benzaldehyde
ND
1
8.0
0.50
ug/L
08/26/2020 1101
Benzo(a)anthracene
ND
1
0.80
0.20
ug/L
08/26/2020 1101
Benzo(a)pyrene
ND
1
0.80
0.20
ug/L
08/26/2020 1101
Benzo(b)fluoranthene
ND
1
0.80
0.20
ug/L
08/26/2020 1101
Benzo(g,h,i)perylene
ND
1
0.80
0.20
ug/L
08/26/2020 1101
Benzo(k)fluoranthene
ND
1
0.80
0.20
ug/L
08/26/2020 1101
1,1'-Biphenyl
ND
1
4.0
0.50
ug/L
08/26/2020 1101
4-Bromophenyl phenyl ether
ND
1
4.0
0.50
ug/L
08/26/2020 1101
Butyl benzyl phthalate
ND
1
4.0
0.50
ug/L
08/26/2020 1101
Caprolactam
3.1 J
1
8.0
1.0
ug/L
08126/20201101
Carbazole
ND
1
4.0
0.50
ug/L
08/26/2020 1101
bis (2-Chloro-1-methylethyl) ether
ND
1
4.0
0.50
ug/L
08/26/2020 1101
4-Chloro-3-methyl phenol
ND
1
4.0
0.50
ug/L
08/26/2020 1101
4-Chloroaniline
ND
1
8.0
0.50
ug/L
08/26/2020 1101
bis(2-Chloroethoxy)methane
ND
1
4.0
0.50
ug/L
08/26/2020 1101
bis(2-Chloroethyl)ether
ND
1
4.0
0.50
ug/L
08/26/2020 1101
2-Chloronaphthalene
ND
1
4.0
0.50
ug/L
08/26/2020 1101
2-Chlorophenol
ND
1
4.0
0.50
ug/L
08/26/2020 1101
4-Chlorophenyl phenyl ether
ND
1
4.0
0.50
ug/L
08/26/2020 1101
Chrysene
ND
1
0.80
0.20
ug/L
08/26/2020 1101
Dibenzo(a,h)anthracene
ND
1
0.80
0.20
ug/L
08/26/2020 1101
Dibenzofuran
ND
1
4.0
0.50
ug/L
08/26/2020 1101
3,3'-Dichlorobenzidine
ND
1
4.0
1.8
ug/L
08/26/2020 1101
2,4-Dichlorophenol
ND
1
8.0
1.0
ug/L
08/26/2020 1101
Diethylphthalate
ND
1
4.0
0.50
ug/L
08/26/2020 1101
Dimethyl phthalate
ND
1
4.0
0.50
ug/L
08/26/2020 1101
2,4-Dimethylphenol
ND
1
4.0
1.0
ug/L
08/26/2020 1101
Di-n-butyl phthalate
ND
1
4.0
0.50
ug/L
08/26/2020 1101
4,6-Dinitro-2-methyl phenol
ND
1
20
1.0
ug/L
08/26/2020 1101
2,4-Dinitrophenol
ND
1
20
1.0
ug/L
08/26/2020 1101
2,4-Dinitrotoluene
ND
1
8.0
0.50
ug/L
08/26/2020 1101
2,6-Dinitrotoluene
ND
1
8.0
0.50
ug/L
08/26/2020 1101
Di-n-octylphthalate
ND
1
4.0
0.50
ug/L
08/26/2020 1101
bis(2-Ethylhexyl)phthalate
ND
1
4.0
0.50
ug/L
08/26/2020 1101
Fluoranthene
ND
1
0.80
0.20
ug/L
08/26/2020 1101
Fluorene
ND
1
0.80
0.20
ug/L
08/26/2020 1101
Hexachlorobenzene
ND
1
4.0
0.50
ug/L
08/26/2020 1101
Hexachlorobutadiene
ND
1
4.0
0.50
ug/L
08/26/2020 1101
Hexachlorocyclopentadiene
ND
1
20
2.0
ug/L
08/26/2020 1101
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 94 of 118

Semivolatile Organic Compounds by GC/MS - MB
Sample ID: VQ64482-001 Matrix: Aqueous
Batch:64482 Prep Method: 3520C
Analytical Method: 8270E Prep Date: 08/24/2020 1530
Parameter
Result Q
Dil
LOQ
DL
Units
Analysis Date
Hexachloroethane
ND
1
4.0
1.0
ug/L
08/26/20201101
Indeno(1,2,3-c,d)pyrene
ND
1
0.80
0.20
ug/L
08/26/20201101
Isophorone
ND
1
4.0
0.50
ug/L
08/26/20201101
2-Methyl naphthalene
ND
1
0.80
0.20
ug/L
08/26/20201101
2-Methylphenol
ND
1
4.0
1.0
ug/L
08/26/20201101
3+4-Methylphenol
ND
1
4.0
1.5
ug/L
08/26/20201101
Naphthalene
ND
1
0.80
0.20
ug/L
08/26/20201101
2-Nitroaniline
ND
1
8.0
0.50
ug/L
08/26/20201101
3-Nitroaniline
ND
1
8.0
1.0
ug/L
08/26/20201101
4-Nitroaniline
ND
1
8.0
1.5
ug/L
08/26/20201101
Nitrobenzene
ND
1
4.0
1.5
ug/L
08/26/20201101
2-Nitrophenol
ND
1
4.0
1.0
ug/L
08/26/20201101
4-Nitrophenol
ND
1
20
2.0
ug/L
08/26/20201101
N-Nitrosodi-n-propylamine
ND
1
4.0
0.50
ug/L
08/26/20201101
N-Nitrosodiphenylamine (Diphenylamine)
ND
1
4.0
0.50
ug/L
08/26/2020 1101
Pentachlorophenol
ND
1
20
2.0
ug/L
08/26/20201101
Phenanthrene
ND
1
0.80
0.20
ug/L
08/26/20201101
Phenol
ND
1
4.0
0.50
ug/L
08/26/20201101
Pyrene
ND
1
0.80
0.20
ug/L
08/26/20201101
2,4,5-Trichlorophenol
ND
1
4.0
0.50
ug/L
08/26/20201101
2,4,6-Trichlorophenol
ND
1
4.0
0.50
ug/L
08/26/20201101
Surrogate Q % Rec Acceptance
Limit
2-Fluorobiphenyl
77
37-129
2-Fluorophenol
41
24-127
Nitrobenzene-d5
78
38-127
Phenol-d5
62
28-128
Terphenyl-d 14
84
10-148
2,4,6-Tribromophenol
66
35-144
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 95 of 118

Semivolatile Organic Compounds by GC/MS - LCS
Sample ID: VQ64482-002
Matrix: Aqueous
Batch:64482
Prep Method:
3520C
Analytical Method: 8270E
Prep Date: 08/24/2020 1530
Spike
Amount
Result
% Rec
Parameter
(ug/L)
(ug/L)
Q Dil
% Rec
Limit
Analysis Date
Acenaphthene
40
31
1
77
30-122
08/26/2020 1126
Acenaphthylene
40
35
1
88
30-130
08/26/2020 1126
Acetophenone
40
38
1
96
30-130
08/26/2020 1126
Anthracene
40
34
1
85
30-123
08/26/2020 1126
Atrazine
40
38
1
94
30-130
08/26/2020 1126
Benzaldehyde
40
34
1
84
20-115
08/26/2020 1126
Benzo(a)anthracene
40
34
1
85
40-125
08/26/2020 1126
Benzo(a)pyrene
40
31
1
78
40-128
08/26/2020 1126
Benzo(b)fluoranthene
40
31
1
77
30-130
08/26/2020 1126
Benzo(g,h,i)perylene
40
39
1
97
30-130
08/26/2020 1126
Benzo(k)fluoranthene
40
34
1
85
30-130
08/26/2020 1126
1,1'-Biphenyl
40
33
1
82
30-130
08/26/2020 1126
4-Bromophenyl phenyl ether
40
31
1
76
30-124
08/26/2020 1126
Butyl benzyl phthalate
40
39
1
98
30-130
08/26/2020 1126
Caprolactam
40
43
1
107
30-130
08/26/2020 1126
Carbazole
40
32
1
80
30-130
08/26/2020 1126
bis (2-Chloro-1-methylethyl) ether
40
35
1
87
30-130
08/26/2020 1126
4-Chloro-3-methyl phenol
40
33
1
83
30-123
08/26/2020 1126
4-Chloroaniline
40
15
1
37
12-157
08/26/2020 1126
bis(2-Chloroethoxy)methane
40
31
1
77
30-130
08/26/2020 1126
bis(2-Chloroethyl)ether
40
36
1
89
30-130
08/26/2020 1126
2-Chloronaphthalene
40
32
1
81
30-130
08/26/2020 1126
2-Chlorophenol
40
35
1
87
30-130
08/26/2020 1126
4-Chlorophenyl phenyl ether
40
30
1
76
30-121
08/26/2020 1126
Chrysene
40
32
1
81
30-130
08/26/2020 1126
Dibenzo(a,h)anthracene
40
36
1
90
30-130
08/26/2020 1126
Dibenzofuran
40
32
1
80
30-118
08/26/2020 1126
3,3'-Dichlorobenzidine
40
8.9
1
22
10-126
08/26/2020 1126
2,4-Dichlorophenol
40
31
1
78
30-121
08/26/2020 1126
Diethylphthalate
40
33
1
82
40-125
08/26/2020 1126
Dimethyl phthalate
40
33
1
81
40-127
08/26/2020 1126
2,4-Dimethyl phenol
40
42
1
106
20-125
08/26/2020 1126
Di-n-butyl phthalate
40
35
1
88
40-127
08/26/2020 1126
4,6-Dinitro-2-methyl phenol
40
32
1
80
30-130
08/26/2020 1126
2,4-Dinitrophenol
80
46
1
57
11-126
08/26/2020 1126
2,4-Dinitrotoluene
40
38
1
95
30-130
08/26/2020 1126
2,6-Dinitrotoluene
40
36
1
91
30-130
08/26/2020 1126
Di-n-octylphthalate
40
35
1
88
30-130
08/26/2020 1126
bis(2-Ethylhexyl)phthalate
40
39
1
97
30-130
08/26/2020 1126
Fluoranthene
40
31
1
79
40-128
08/26/2020 1126
Fluorene
40
30
1
76
30-124
08/26/2020 1126
Hexachlorobenzene
40
30
1
74
30-125
08/26/2020 1126
Hexachlorobutadiene
40
28
1
70
24-110
08/26/2020 1126
Hexachlorocyclopentadiene
200
88
1
44
22-122
08/26/2020 1126
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40%
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 96 of 118

Semivolatile Organic Compounds by GC/MS - LCS
Sample ID: VQ64482-002
Matrix: Aqueous
Batch:64482
Prep Method:
3520C
Analytical Method: 8270E
Prep Date: 08/24/2020 1530
Spike
Amount
Result
% Rec
Parameter
(ug/L)
(ug/L)
Q Dil
% Rec
Limit
Analysis Date
Hexachloroethane
40
33
1
82
30-130
08/26/20201126
Indeno(1,2,3-c,d)pyrene
40
35
1
86
30-130
08/26/20201126
Isophorone
40
38
1
94
30-130
08/26/20201126
2-Methyl naphthalene
40
31
1
77
40-132
08/26/20201126
2-Methylphenol
40
46
1
114
30-130
08/26/20201126
3+4-Methyl phenol
40
40
1
100
30-130
08/26/20201126
Naphthalene
40
31
1
77
30-130
08/26/20201126
2-Nitroaniline
40
38
1
94
30-130
08/26/20201126
3-Nitroaniline
40
23
1
57
30-130
08/26/20201126
4-Nitroaniline
40
33
1
83
30-135
08/26/20201126
Nitrobenzene
40
35
1
88
30-130
08/26/20201126
2-Nitrophenol
40
34
1
85
30-130
08/26/20201126
4-Nitrophenol
80
49
1
62
30-130
08/26/20201126
N-Nitrosodi-n-propylamine
40
40
1
99
30-130
08/26/20201126
N-Nitrosodiphenylamine (Diphenylamine)
40
32
1
79
30-123
08/26/2020 1126
Pentachlorophenol
80
43
1
54
30-130
08/26/20201126
Phenanthrene
40
31
1
77
40-123
08/26/20201126
Phenol
40
35
1
87
30-130
08/26/20201126
Pyrene
40
38
1
95
40-126
08/26/20201126
2,4,5-Trichlorophenol
40
29
1
73
30-123
08/26/20201126
2,4,6-Trichlorophenol
40
32
1
80
30-130
08/26/20201126
Surrogate Q % Rec Acceptance
Limit
2-Fluorobiphenyl
76
37-129
2-Fluorophenol
87
24-127
Nitrobenzene-d5
84
38-127
Phenol-d5
96
28-128
Terphenyl-d 14
83
10-148
2,4,6-Tribromophenol
71
35-144
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 97 of 118

MADEP EPH (aliphatics) - Unfractionated - MB
Sample ID: VQ64251-001 Matrix: Aqueous
Batch: 64251 Prep Method: MADEP-EPH-04
Analytical Method: MADEP-EPH-04 Prep Date: 08/21/2020 0916
Parameter Result Q Dil LOQ DL Units Analysis Date
C19 - C36 Aliphatics - Unfractionated ND 1 100 100 ug/L 08/30/2020 2111
C9 - C18 Aliphatics - Unfractionated ND 1 100 100 ug/L 08/30/2020 2111
Surrogate
Acceptance
Q % Rec Limit
1-Chloro-octadecane (aliphatic) - Unfractionated 65 40-140
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 98 of 118

MADEP EPH (aliphatics) - Unfractionated - LCS
Sample ID: VQ64251-002
Matrix: Aqueous
Batch: 64251
Prep Method: MADEP-EPH-04
Analytical Method: MADEP-EPH-04
Prep Date: 08/21/2020 0916
Spike
Amount
Result
% Rec
Parameter
(ug/L)
(ug/L)
Q Dil % Rec
Limit Analysis Date
C19 - C36 Aliphatics - Unfractionated
900
670
1 75
40-140 08/30/2020 2141
C9 - C18 Aliphatics - Unfractionated
650
400
1 61
40-140 08/30/2020 2141
Surrogate
Acceptance
Q % Rec Limit
1-Chloro-octadecane (aliphatic) - Unfractionated 70 40-140
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 99 of 118

MADEP EPH (aliphatics) - Unfractionated - LCSD
Sample ID: VQ64251-003
Matrix: Aqueous
Batch: 64251
Prep Method: MADEP-EPH-04
Analytical Method: MADEP-EPH-04
Prep Date: 08/21/2020 0916
Spike
Amount
Result
% Rec
% RPD
Parameter
(ug/L)
(ug/L) Q
Dil % Rec % RPD Limit
Limit Analysis Date
C19 - C36 Aliphatics - Unfractionated
900
990 +
1 110 38 40-140
25 08/30/2020 2211
C9 - C18 Aliphatics - Unfractionated
650
520 +
1 80 26 40-140
25 08/30/2020 2211
Surrogate
Acceptance
Q % Rec Limit
1-Chloro-octadecane (aliphatic) - Unfractionated 90 40-140
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 100 of 118

MADEP EPH (aromatics) - Unfractionated - MB
Sample ID: VQ64252-001 Matrix: Aqueous
Batch: 64252 Prep Method: MADEP-EPH-04
Analytical Method: MADEP-EPH-04 Prep Date: 08/21/2020 0916
Parameter Result Q Dil LOQ DL Units Analysis Date
C11 - C22 Aromatics - Unfractionated ND 1 100 100 ug/L 08/30/2020 2111
Surrogate Q % Rec Ac L mt tnce
o - Terphenyl (aromatic) - Unfractionated 90 40-140
2-Fluorobiphenyl (fractionation 1) 110 40-140
2-Bromonaphthalene (fractionation 2) 97 40-140
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 101 of 118

MADEP EPH (aromatics) - Unfractionated - LCS
Sample ID: VQ64252-002
Matrix: Aqueous
Batch: 64252
Prep Method: MADEP-EPH-04
Analytical Method: MADEP-EPH-04
Prep Date: 08/21/2020 0916
Spike
Amount
Result
% Rec
Parameter
(ug/L)
(ug/L) Q
Dil % Rec Limit Analysis Date
C11 - C22 Aromatics - Unfractionated
1400
1300
1 93 40-140 08/30/2020 2141
Surrogate
Q % Rec
Ac L mt tnce
o - Terphenyl (aromatic) - Unfractionated
84
40-140
2-Fluorobiphenyl (fractionation 1)
118
40-140
2-Bromonaphthalene (fractionation 2)
110
40-140
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 102 of 118

MADEP EPH (aromatics) - Unfractionated - LCSD
Sample ID: VQ64252-003
Matrix: Aqueous
Batch: 64252
Prep Method: MADEP-EPH-04
Analytical Method: MADEP-EPH-04
Prep Date: 08/21/2020 0916
Spike
Amount
Result
% Rec % RPD
Parameter
(ug/L)
(ug/L) Q
Dil % Rec % RPD Limit Limit Analysis Date
C11 - C22 Aromatics - Unfractionated
1400
1700 +
1 123 28 40-140 25 08/30/2020 2211
Surrogate
Q % Rec
j0'cceLimt tnce
o - Terphenyl (aromatic) - Unfractionated
110
40-140
2-Fluorobiphenyl (fractionation 1)
134
40-140
2-Bromonaphthalene (fractionation 2)
124
40-140
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 103 of 118

MADEP EPH (aliphatics) - MB
Sample ID: VQ64258-001 Matrix: Aqueous
Batch: 64258 Prep Method: MADEP-EPH-04
Analytical Method: MADEP-EPH-04 Prep Date: 08/21/2020 0916
Parameter Result Q Dil LOQ DL Units Analysis Date
C9 - C18 Aliphatics ND 1 100 100 ug/L 08/31/2020 0211
C19 - C36 Aliphatics ND 1 100 100 ug/L 08/31/2020 0211
Surrogate
Acceptance
Q % Rec Limit
1-Chloro-octadecane (aliphatic) 61 40-140
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 104 of 118

MADEP EPH (aliphatics) - LCS
Sample ID: VQ64258-002
Matrix: Aqueous
Batch: 64258
Prep Method: MADEP-EPH-04
Analytical Method: MADEP-EPH-04
Prep Date: 08/21/2020 0916
Spike
Amount
Result
% Rec
Parameter
(ug/L)
(ug/L)
Q Dil % Rec
Limit Analysis Date
C9 - C18 Aliphatics
300
150
1 50
40-140 08/31/2020 0241
C19 - C36 Aliphatics
400
270
1 66
40-140 08/31/2020 0241
Surrogate
Acceptance
Q % Rec Limit
1-Chloro-octadecane (aliphatic) 57 40-140
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 105 of 118

MADEP EPH (aliphatics) - LCSD
Sample ID: VQ64258-003
Matrix: Aqueous
Batch: 64258
Prep Method: MADEP-EPH-04
Analytical Method: MADEP-EPH-04
Prep Date: 08/21/2020 0916
Spike
Amount
Result
% Rec
% RPD
Parameter
(ug/L)
(ug/L) Q
Dil % Rec % RPD Limit
Limit Analysis Date
C9 - C18 Aliphatics
300
170
1 57 14 40-140
25 08/31/2020 0311
C19 - C36 Aliphatics
400
310
1 77 15 40-140
25 08/31/2020 0311
Surrogate
Acceptance
Q % Rec Limit
1-Chloro-octadecane (aliphatic) 62 40-140
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 106 of 118

MADEP EPH (aromatics) - MB
Sample ID: VQ64259-001
Matrix: Aqueous
Batch: 64259
Prep Method: MADEP-EPH-04
Analytical Method: MADEP-EPH-04
Prep Date: 08/21/2020 0916
Parameter
Result Q Dil
LOQ DL Units Analysis Date
C11 - C22 Aromatics
ND 1
100 100 ug/L 09/01/2020 1654
Surrogate
Q % Rec Ac L mt tnce
o - Terphenyl (aromatic)
103 40-140
2-Fluorobiphenyl (fractionation 1)
122 40-140
2-Bromonaphthalene (fractionation 2)
108 40-140
LOQ = Limit of Quantitation
ND = Not detected at or above the DL
N = Recovery is out of criteria
DL = Detection Limit
J = Estimated result < LOQ and > DL
P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 107 of 118

MADEP EPH (aromatics) - LCS
Sample ID: VQ64259-002
Matrix: Aqueous
Batch: 64259
Prep Method: MADEP-EPH-04
Analytical Method: MADEP-EPH-04
Prep Date: 08/21/2020 0916
Spike
Amount
Result
% Rec
Parameter
(ug/L)
(ug/L) Q
Dil % Rec Limit Analysis Date
C11 - C22 Aromatics
850
930
1 110 40-140 09/01/2020 1621
Surrogate
Q % Rec
Acceptance
Limit
o - Terphenyl (aromatic) 89 40-140
2-Fluorobiphenyl (fractionation 1) 123 40-140
2-Bromonaphthalene (fractionation 2) 111 40-140
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 108 of 118

MADEP EPH (aromatics) - LCSD
Sample ID: VQ64259-003 Matrix: Aqueous
Batch: 64259 Prep Method: MADEP-EPH-04
Analytical Method: MADEP-EPH-04 Prep Date: 08/21/2020 0916
Spike
Amount Result % Rec % RPD
Parameter (ug/L) (ug/L) Q Dil % Rec % RPD Limit Limit Analysis Date
C11 - C22 Aromatics 850 1000 1 120 8.5 40-140 25 09/01/2020 1755
Acceptance
Surrogate Q % Rec Limit
o - Terphenyl (aromatic) 106 40-140
2-Fluorobiphenyl (fractionation 1) 130 40-140
2-Bromonaphthalene (fractionation 2) 117 40-140
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 109 of 118

MADEP VPH (aliphatics) - MB
Sample ID: VQ64343-001 Matrix: Aqueous
Batch: 64343 Prep Method: VPH
Analytical Method: MADEP-VPH-18-2.1
Parameter Result Q Dil LOQ DL Units Analysis Date
C5 - C8 Aliphatics ND 1 75 15 ug/L 08/21/2020 1406
C9 - C12 Aliphatics ND 1 75 15 ug/L 08/21/2020 1406
Surrogate
2,5-Dibromotoluene (FID)
Acceptance
Q % Rec Limit
100 70-130
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 110 of 118

MADEP VPH (aliphatics) - LCS
Sample ID: VQ64343-002
Matrix: Aqueous
Batch: 64343
Prep Method: VPH
Analytical Method: MADEP-VPH-18-2.1
Spike
Amount
Result
% Rec
Parameter (ug/L)
(ug/L)
Q Dil % Rec
Limit Analysis Date
C5 - C8 Aliphatics 150
130
1 84
70-130 08/21/2020 1308
C9 - C12 Aliphatics 180
140
1 81
70-130 08/21/2020 1308
Surrogate
2,5-Dibromotoluene (FID)
Acceptance
Q % Rec Limit
79 70-130
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page I I I of 118

MADEP VPH (aliphatics) - LCSD
Sample ID: VQ64343-003
Matrix: Aqueous
Batch: 64343
Prep Method: VPH
Analytical Method: MADEP-VPH-18-2.1
Spike
Amount
Result
% Rec
% RPD
Parameter (ug/L)
(ug/L) Q
Dil % Rec % RPD
Limit
Limit Analysis Date
C5 - C8 Aliphatics 150
140
1 93 9.8
70-130
25 08/21/2020 1337
C9 - C12 Aliphatics 180
160
1 89 10
70-130
25 08/21/2020 1337
Surrogate
2,5-Dibromotoluene (FID)
Acceptance
Q % Rec Limit
89 70-130
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 112 of 118

MADEP VPH (aromatics) - MB
Sample ID: VQ64344-001 Matrix: Aqueous
Batch: 64344 Prep Method: VPH
Analytical Method: MADEP-VPH-18-2.1
Parameter Result Q Dil LOQ DL Units Analysis Date
C9 - C10 Aromatics ND 1 25 5.0 ug/L 08/21/2020 1406
Surrogate
2,5-Dibromotoluene (PID)
Acceptance
Q % Rec Limit
101 70-130
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 113 of 118

MADEP VPH (aromatics) - LCS
Sample ID: VQ64344-002 Matrix: Aqueous
Batch: 64344 Prep Method: VPH
Analytical Method: MADEP-VPH-18-2.1
Spike
Amount Result % Rec
Parameter (ug/L) (ug/L) Q Dil % Rec Limit Analysis Date
C9 - C10 Aromatics 25 21 1 84 70-130 08/21/2020 1308
Surrogate
2,5-Dibromotoluene (PID)
Acceptance
Q % Rec Limit
81 70-130
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 114 of 118

MADEP VPH (aromatics) - LCSD
Sample ID: VQ64344-003 Matrix: Aqueous
Batch: 64344 Prep Method: VPH
Analytical Method: MADEP-VPH-18-2.1
Spike
Amount Result % Rec % RPD
Parameter (ug/L) (ug/L) Q Dil % Rec % RPD Limit Limit Analysis Date
C9 - C10 Aromatics 25 24 1 96 14 70-130 25 08/21/2020 1337
Surrogate
2,5-Dibromotoluene (PID)
Acceptance
Q % Rec Limit
90 70-130
LOQ = Limit of Quantitation ND = Not detected at or above the DL N = Recovery is out of criteria
DL = Detection Limit J = Estimated result < LOQ and > DL P = The RPD between two GC columns exceeds 40 %
+ = RPD is out of criteria
Note: Calculations are performed before rounding to avoid round -off errors in calculated results
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.) QC Data for Lot Number: VH19129
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 115 of 118

Chain of Custody
and
Miscellaneous Documents
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 116 of 118

PACE ANALYTICAL SERVICES. LLC
z
r
ICI, -
ky ` � •: - —
Jlrfietn
'0,
i9R:CRj Fyn
AW�g3-'.7 4F
cis
w
J
3,2
f r.Ll
?'• x L
Ty-
�t
r fi
' y I i ` q
cr-
4
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 117 of 118

PACE ANALYTICAL SERVICES, LLC
511calY Eeir•umrAcMa. Serviru, inc
ilocumaitNumber: 11L-QDIae-]a t,'Ap I(,;t
'ample Re"ipt heckligt (SR
C]iclt#= TEFL 4Ct7N Cooler []rs ct.tcd byllintez FTB I R119ry0
I Lot ik '041.r)129
h4ens ofvipt: SESI Q Clie]]t �] UP 3 13t;d1�x Okll E
❑ Yes Nu 1- WCM cusmc{y seals rCSant an tarn f434)ler?
Yes No NA Z. 1fellMdy seals were -sent, IY.1: c they h1tw and uabrnkeq
H Strip Or NA C:hlaririp Strip ID: MA _ T lad bj, NA
C]rigi lal t&rtperatLtm upan robc.iPt l ErEwlvcd (C11-fcte¢) l.-mct;ratlire upoj r}oci
2.fit 96Solid SnaFi Up IC]: NA
r' ?-t 12.1 ¢ .3 1 .3 �C NA ,NA �C --
htathaa �Tcrnperrxture i3lnttle�]lk inst 13n1[les Ili (,tm ]ll; IAQU1.1 orrcrvliun Factor: 0
Nle3hod ofcoplant; ®Vdet [ot- Q fee Backs �] D Tex ❑ None
Yes ❑ No 1Z NA 3. I f kolrrpergtgrc of any as Dlec ucc�de�16.D°C, was Project , ]tagul Notil led?
PNl v.as Nofi F£rC E,y; pl>,DnG 1 email { Fac�w-Pape (circl$ e�.
❑ Ycs No ONA 4. rs the COM111i-Ucis, curio's ]]EAirkG s:ip attached to this f nn?
Ytss ❑ No 5. werc cusibwiy pro"-dures (refinlL[isile[!lrcxc:�ed) fpfiuwerJ?
Ye$ No G_ om sanp[e 11]3 liSlod on ]tic C?
y' i T�2U 7. Weresample IDs lisW un all sample eQntainets? `
Yes ❑ NO 4. Was oollcction date &. timY lisped Orl the {7t]C'�
Yes , No 9. Wgs fio1le ;iat]datu & tune listed on al sampJc ooitiuiner 7
® `ees No 10- Dial all t:o111t8iner labs] :nformatio,i (m, date, time) agree faith tYic Ct7C?
6 J Yes Q No 11. Were fcsts te, ke perrorncd iisted olt 111c C:()cr!
Ycs ❑ ja 12- Dkl all samples arrive in the proper oahtairtc s for each t t }mdeor is good utnditivt7
(uabro'-ten, [ids errL
e5 ❑ No ] 3. Was ariexluate srunple vlanl-E available?
Yes ❑ No 14, yllem a[' samples 1=c ived wit]] i:i 112 the holding ti ma: or 4 j hours, wh ichever wines first?
Ycs Iro 1, Wore a13y sa]rtlrls con[aiinorsm]sin excess (w.iroleone; 's�rrtplefi blot listed of CC)C::�
Q Ycs WIND C3 NA 16. For of
ar_d RSK-1?S santpErss �terr bethi}les present �"�e�sine'° (�/n"ar btn:n i]] uidmcher}
in stiy of tfhe VOA vitas?
❑ Yes No 'NA 17, Were A Dkolmeta3se'mi1rient samplers received xu a pH
Q Yes ❑ No 1Z NA ; 8, Were oil ayanidrr samlk[i recc�;Ved at a p}i > T2 rnd sulfide samples t=cj;.,ed at a pl-I �_ 9?
D yC3 ❑ No Q N.� 19. ere ail applicab e N�,k1T Nlcyarad VphAns 11425 (< 0.5[ rfl-}.sautpies irtt ofmidual
clllunne7
❑ 4 1's+ TlA 20. Wcre client retnarkslreyunsts (i, , rcquestcd di]ueloas, 1wf SD dcsigli3i[anz3 etc...)
ccrrecrly transcribed fu)tri the CQC into the commelit se{ -.(ion t L1M ?
t� Ycs No 21- Vas the quote tl tlniber [iuted on (fle costa inar labc[? i 1` vcs, uotc 4 NA
Saluple Pregervatian (+1us; []t; aa:stplatGd ?[?r an�r sample{s] intaDrre t]y p: ;crvecC nr vw�tj] hzadspape,}
Sample sk N vt�er ]sae=�� d incorrectly presor Wand -,kT.ra adjusted amordLagiy
in sarnp:e receiving with 1A ro_ Of 6M]c nna: A2SO4, HM03, MCI, NaCX I. tts'ng SR # NA
I'iric of jlr uCrYqti0n NA Irmorn, than ouc regMative is rteeded, plm.sir n0w i, the curnments belnw-
J'samp]c(s) NA -were rece{vod %vir bubbdas �(, rnin in dimil cter,
at;lples(s) NA webs reccivet with TRC. x 0,5
Ij,Is'ed scearcGttgly iq SAMP16 rcCeivilig with s�divall ihinsulttt (NH2S_03) w=th shcaiy I gIN(AIf #! I � is era) Ahd urnx
Sly 1-wrcoda iabelr ,,replied by:.rTF3 paw; &`[ 'V20 i
- — i
Ca]ue,3ettl : (1 1L BC] FROM SAMPLE 42 p1D NOT HAVE ID UR DATE TRvir.. fl)=.CrDED BY pRaC1355 OF
TL1iyTi�A'I'IOI T
_ i
E!
I
i
i
Pace Analytical Services, LLC (formerly Shealy Environmental Services, Inc.)
106 Vantage Point Drive West Columbia, SC 29172 [phone] Fax [phone] www.pacelabs.com
Page 118 of 118

APPENDIX B
Historical Groundwater Analysis Tables

TABLE 4
GEOCHEMICAL ANALYSES OF GROUNDWATER SAMPLING
NO EMBER 1 41996
Sample
Lareation
Sample
Date
All Compounds
610 list by Method 625
u
Diesel Range Organics
by Method 35101
m Oj
M -6
Nut sa.m led - 1.5" of free prcduct observed on 11/14196,
MW-7
11}14196
<50
630
MW-&
[1/14196
<50
10.9
MW-9
11/14/96
<50
300
MW-10
11/14/96
<50
not anal d
TABLES
GEOGHENIICAL ANALYSTS OF GROUNDWATER SAMPLING
NOVEMBER 22, 1996
Sample
Location
Sample
Date
Method 602
u
Diet 625
u
W-2
1112219b
MTBE: 60
B L <10
-3
11122/96
8 L <1
13 2L <1 D
W-4
11122J96
benzene: 2.3
MTBE. 5.1
BQL (<10)
M -5
11 /22196
B L <1
B L S10
MW-6
11/22196
ethylben ene; 50
toluene: 57
x lenes: 412
anthracene: 145
fluorene. 103
hthalene: 197
11/22/96
B 1a <l
B L <I0
TP-3
1112.2/96
B L < 1 02
1 B L <10
Data from the January 24, 1997 Comprehensive Site Assessment prepared by Engineering
Consulting Services, Ltd.

Beverly, Trudy
From: Beverly, Trudy
Sent: Thursday, December 17, 2020 12:32 PM
To: Fabriziani, Justin L
Subject: RE: [External] NCDOT Mt. Pleasant Maintenance Yard (Incident #14987) - Groundwater
Monitoring Report
Received.
Happy Holidays,
Trudy
.Moi
mental 4w ��
Trudy Beverly, L.G.
Hydrogeologist, Division of Waste Management
North Carolina Department of Environmental Quality
UST Section, Mooresville Regional Office
704.235.2182 (Office)
Trudy. B everlykncdenn gov
Email correspondence to and from this address is subject to the
North Carolina Public Records Law and may be disclosed to third parties.
Office Mailing Address:
610 East Center Avenue, Suite 301
Mooresville, NC 28115
Branch's Underground Storage Tanks Website Address: ht_pt s://deg.nc.gov/about/divisions/waste-management/ust
Branch's Above Ground Storage Tanks Website Address: https:Hdeg.nc.gov/about/divisions/waste-management/ust/ast-program
INTERACTIVE MAPS WITH DWM SITES AND PERMITTED FACILITIES:
httos://dea.nc. gov/about/divisions/waste-management/waste-management-rules-data/waste-management-ais-mans
File Review Procedures:
hops://deq.ne. gov/about/divisions/waste-management/ust/file-review-procedures#mooresville-regional-office
ONLINE ACCESS TO UST SECTION DOCUMENTS (Laserfiche):
bit.ps://deq.nc.gov/about/divisions/waste-management/laserfiche
Document Submittal & UST File Names for Laserfiche Policies:
htti)s:Hfiles.ne.izov/ncdea[Waste%2OMana2ement/DWM/UST/WhatsNew/Final-Electronic-Document-Submittal-Policv.l)df
https:Hfiles.nc.gov/ncdeq/Waste%2OManagement/D WM/UST/Corrective%2OAction/UST%20file%20names%20for%2OLaserfiche.docx
From: Fabriziani, Justin L[mailto:[e-mail]]
Sent: Thursday, December 17, 2020 12:05 PM
To: Beverly, Trudy <[e-mail]>
Subject: [External] NCDOT Mt. Pleasant Maintenance Yard (Incident #14987) - Groundwater Monitoring Report
CAUTION: External email. Do not click links or open attachments unless you verify. Send all suspicious email as an attachment to
Report Spam.
Good afternoon —
On behalf of NCDOT, I would like to submit the attached monitoring report for the NCDOT Mt. Pleasant Maintenance
Yard (Incident #14987). Please let me know if you have any questions regarding the report once you have had a chance
to review.
Do you need a hard copy of the report submitted as well?
Thank you very much.

Justin L. Fabriziani, RSM
Department Manager I Environmental Services
Terracon
2401 Brentwood Road, Suite 107 1 Raleigh, NC 27604
D (919) 436 29881 P [phone] 1 M [phone]
Justin.fabriziani()-terracon.com I www.terracon.com
Terracon provides environmental, facilities, geotechnical, and materials consulting engineering services delivered with
responsiveness, resourcefulness, and reliability.
Private and confidential as detailed here (www.terracon.com/disclaimer). If you cannot access the hyperlink, please e-mail
sender.