MO-9369_40821_CA_IAR_20181203_Initial Abatement Action

INITIAL ABATEMENT
ACTION REPORT
PREGEL - PHASE III ADDITION
Concord, North Carolina
SUBMITTED TO:
North Carolina Department of Environmental Quality
Division of Waste Management
Underground Storage Tank Section
610 East Center Avenue
Suite 301
Mooresville, North Carolina 28115
PREPARED FOR:
PreGel America, Inc.
4450 Fortune Avenue NW
Concord, North Carolina 28027
NOVA Project Number: 1018005
December 3, 2018
Off

N OVA
TRANSMITTAL LETTER
PROJECT NAME: MO-9363 40821 CA IAR_20181203_Initial Abatement Action
Initial Abatement Action Report for PreGel - Phase III Addition
NOVA PROJECT NUMBER: 1018005
TRANSMITTAL DATE: December 4, 2018
TO: Ms. Trudy Beverly
North Carolina Department of
Environmental Quality
UST Section
610 East Center Avenue, Suite 301
Mooresville, North Carolina 28115
WE TRANSMIT VIA:
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FOR YOUR:
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THE FOLLOWING:
() Contract Documents ( )
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2 1 December 3, 2018 1 N/A
FROM: Mr. Keith Rice
NOVA Engineering & Environmental, Inc.
5104 Reagan Drive
Suite 8
Charlotte, North Carolina 28206
US Mail
Overnight or Standard Shipping
Distribution to parties
Review and Comment
Geotechnical Report
Lab Results
() Information
N Record
N Environmental Report
() Change Order
Initial Abatement Action Report for PreGel - Phase III Addition
MO-9363 40821 CA IAR 20181203
REMARKS: One (1) hard copy and one (1) electronic copy included.
SIG
RECIEVED:
COPIES TO: Mr. Paul R. Garafola (WHN Architects); Ms. Trudy Beverly (NC DEQ)
PROFESSIONAL I PRACTICAL I PROVEN
5104 Reagan Drive, Suite 8, Charlotte, North Carolina 28206
NOVA NC License C-2807
t. 980.321.4100 / f. 980.321.4099 / usanova.com

N OVA
December 3, 2018
PREGELAMERICA, INC.
4450 Fortune Avenue NW
Concord, North Carolina 28027
Attention: Mr. Rusty Chapman
Subject: Initial Abatement Action Report
PREGEL - PHASE III ADDTION
Charlotte, North Carolina
NOVA Project Number 1018005
Dear Mr. Chapman:
NOVA Engineering and Environmental, Inc. (NOVA) has completed the Initial Abatement Action
Report requested by the North Carolina Department of Environmental Quality (NC DEQ) Division
of Waste Management, Underground Storage Tank (UST) Section for the PreGel - Phase III
Addition site located in Concord, Cabarrus County, North Carolina. The work was performed as
an addition to NOVA's Proposal Number 005-10183366, dated February 12, 2018.
We appreciate your selection of NOVA and the opportunity to be of service on this project. If you
have any questions, or if we may be of further assistance, please do not hesitate to contact us.
Sincerely,
NOVA Engineering and Environmental, Inc.
�— \A CE O'''.
Q SEAL�9�
Nathan Parker Keith ice David E. 1Peri�ly „P.E• 38G93
Project Geologist Senior Geologist Senior Engine F ��zz
O
Copies Submitted: Addressee (electronic)
PPC) FESS10114AL- i PRACTICAL i PROVEN
5104 Reagan Drive, Suite 8, Charlotte, North Carolina 28206
NOVA NC License C-2807
t. 980,321.4100 / f. 980.321.4099 / usanova.com

TABLE OF CONTENTS
1.0
EXECUTIVE SUMMARY...................................................................................................1
2.0
SITE INFORMATION........................................................................................................
2
2.1
SITE IDENTIFICATION.........................................................................................................................2
2.2
CONTACT INFORMATION.....................................................................................................................2
2.3
TANK INFORMATION..........................................................................................................................3
3.0
SITE CHARACTERIZATION..............................................................................................
4
4.0
SITE CHECK REPORT.....................................................................................................
5
5.0
UST CLOSURE REPORT..................................................................................................
6
6.0
FREE PRODUCT INVESTIGATION....................................................................................
7
7.0
GROUNDWATER AND SURFACE WATER INVESTIGATION ..............................................
8
8.0
INITIAL RESPONSE AND ABATEMENT ACTION...............................................................
9
9.0
LABORATORY ANALYTICAL RESULTS...........................................................................10
10.0
EXCAVATION OF CONTAMINATED SOIL........................................................................12
11.0
CONCLUSION AND RECOMMENDATIONS....................................................................13
APPENDICES
Appendix A - Figures and Tables
Figure 1 - Site Location Map
Figure 2 - Topographic Map
Figure 3 - Sampling Location and Excavation Extent Map
Table 1 - Soil Analytical Summary
Appendix B
- UST-61 Form
Appendix C
- USGS Water Well Survey
Appendix D
- Soil Laboratory Data
Appendix E -
Waste Manifests
Appendix F -
Qualifications of Conclusions

Initial Abatement Action Report December 3, 2018
PreGel - Phase III Addition NOVA Project Number 1018005
1.0 EXECUTIVE SUMMARY
The site consists of an approximately 24.87-acre parcel of land located at 4450 Fortune
Avenue NW in Concord, Cabarrus County, North Carolina (Subject Property). According to the
Cabarrus County Geographic Information System (GIS) database, the Subject Property is
identified as Parcel ID: 56016443100000. The eastern half of the Subject Property is
currently developed with an existing PreGel America, Inc. facility.
On May 23, 2018, during grading activities for additional site improvements on the western
portion of the Subject Property, a buried 550-gallon heating oil Underground Storage Tank
(UST) was encountered. NOVA was contacted by Encompass Building Group (Encompass), the
general contractor for PreGel America, Inc. (Client), regarding the UST following its discovery
on May 23, 2018. NOVA informed Encompass and the Client that the UST was considered a
non -regulated, non-commercial heating oil UST and closure sampling would only be necessary
if a release was suspected. The residual fluids and sludge from the UST were reportedly
removed and disposed off -site by Stat Inc, on June 6, 2018. The UST was reportedly removed
from the ground and placed in an on -site dumpsterforfuture off -site disposal on June 7, 2018
by CK Contractors & Development, LLC (the grading contractor). Following the UST removal
activities, NOVA was contacted to assess the soil in the vicinity of the removed UST due to
observations by others that indicated a suspected release. NOVA arrived on -site to collect the
initial soil samples on June 7, 2018. Two (2) soil samples were collected, one (1) from the
stockpiled soils (S-1) and a second (S-2) from approximately one (1) foot below the bottom of
the UST or approximately six (6) feet below ground surface (bgs). Petroleum odors were noted
in the stockpile soils and from the base of the excavation. Sampling results indicated that a
release had occurred from the UST and a North Carolina Department of Environmental Quality
(NC DEQ) UST-61 Form (24-hour Release and UST Leak Reporting Form) dated June 12, 2018
was completed and submitted to the NC DEQ. A copy of the UST-61 Form is include in
Appendix B of this report.
On July 23, 2018, NOVA collected three (3) vertical delineation soil samples from below the
removed UST. On August 9, 2018, NOVA collected four (4) horizontal delineation (sidewall)
soil samples and a vertical confirmation soil sample. The delineation sampling indicated that
the horizontal and vertical delineation samples were below the NC DEQ UST Action Levels
and/or Maximum Soil Contaminant Concentrations (MSCCs). Groundwater sampling was not
performed due to vertical soil impact delineation. On September 20, 2018, the UST pit
stockpile and over excavated soils were profiled and disposed at Republic Services' Charlotte
Motor Speedway (CMS) Landfill in Concord, North Carolina. A total of 132.31 tons of
petroleum impacted soil was removed and disposed.
N OVA Page 1

Initial Abatement Action Report
PreGel - Phase III Addition
December 3, 2018
NOVA Project Number 1018005
2.0 SITE INFORMATION
2.1 Site Identification
Date of Report: November 20, 2018
Facility ID: MO-9363
Incident Number: 40821
Site Name: PreGel America
Street Address: 4450 Fortune Drive
City/Town: Concord
Zip Code: 28027
County: Cabarrus
Description of Geographical Data Point: Former Heating Oil UST
Location Method: Google Earth
Latitude: 35.427305
Longitude:-80.658501
2.2 Contact Information
Landowner/UST Owner: PreGel America, Inc.
Address: 4450 Fortune Drive, Concord, NC 28027
Telephone: [phone]
Email: [e-mail]
Consultant: NOVA Engineering and Environmental, Inc.
Address: 5104 Reagan Drive, Suite 8, Charlotte, NC 28206
Telephone: [phone]
Email: [e-mail]
UST Fluid Removal Contractor: STAT, Inc.
Address: 2050 Hickory Boulevard, Lenoir, NC 28645
Telephone: [phone]
Email: [e-mail]
UST Removal and Soil Excavation Contractor: CK Contractors & Development, LLC.
Address: 124-1 Wooding Place, Kings Mountain, NC 28086
Telephone: [phone]
Email: [e-mail]
Site Contractor: Encompass Building Group
Address: 1016 Waxhaw-Indian Trail Road, PO Box 1306, Indian Trail, NC 28079
Telephone: [phone]
Email: [e-mail]
N OVA Page 2

Initial Abatement Action Report
PreGel - Phase III Addition
December 3, 2018
NOVA Project Number 1018005
Analytical Laboratory: Prism Laboratories, Inc.
Address: 449 Springbrook Road - PO Box 240543, Charlotte, NC 28224
Telephone: [phone]
2.3 Tank Information
Current/Last
Estimated Capacity
Construction
Release
UST ID
Status of UST
Contents
(Gallons)
Details
Detected?
Single -Walled
Closed
Unknown
Heating Oil
--550
Yes
Steel
(removed)
N D VA Page 3

Initial Abatement Action Report December 3, 2018
PreGel - Phase III Addition NOVA Project Number 1018005
3.0 SITE CHARACTERIZATION
The Subject Property consists of an approximately 24.87-acre parcel located at 4450 Fortune
Avenue NW in Concord, Cabarrus County, North Carolina. According to the Cabarrus County
Geographic Information System (GIS) database, the Subject Property is identified as Parcel ID:
56016443100000.
According to the USGS Kannapolis, NC Topographic Map dated 2016, the Subject Property is
located at approximately 720 feet above mean seal level (MSL) with a slight slope to the south-
southwest. NOVA queried the USGS Well Mapper for Cabarrus County to determine the closest
water well to the site. The nearest well was identified as USGS site #352600080383601 located
approximately 5,000 feet northeast of the site and the nearest downgradient well was identified
as USGS site #352446080391601 located approximately 5,500 feet south of the Subject
Property. A copy of the USGS Kannapolis, NC Topographic Map in include as Figure 3 in Appendix
A. A copy of the USGS Water Well Survey is included in Appendix C.
NOVA performed a Geotechnical assessment of soils in the area of the UST (NOVA Project
Number 10705-2017029, dated December 13, 2017) that describe the soils as fine to medium
sandy Clay turning to Silt with depth below 3.5 feet bgs. No petroleum odors were noted in
NOVA's geotechnical boring logs.
N OVA Page 4

Initial Abatement Action Report
PreGel - Phase III Addition
December 3, 2018
NOVA Project Number 1018005
4.0 SITE CHECK REPORT
The completion of a Site Check Report was not applicable.
N OVA Page 5

Initial Abatement Action Report
PreGel - Phase III Addition
December 3, 2018
NOVA Project Number 1018005
5.0 UST CLOSURE REPORT
Completion of a UST Closure Report was not applicable.
N OVA Page 6

Initial Abatement Action Report
PreGel - Phase III Addition
December 3, 2018
NOVA Project Number 1018005
6.0 FREE PRODUCT INVESTIGATION
No free product was identified during completion of field activities and sampling. Soils were
vertically delineated to below NC DEQ MSCCs prior to groundwater.
N OVA Page 7

Initial Abatement Action Report
PreGel - Phase III Addition
December 3, 2018
NOVA Project Number 1018005
7.0 GROUNDWATER AND SURFACE WATER INVESTIGATION
Soils were vertically delineated to below NC DEQ MSCCs prior to groundwater. Consequently, no
groundwater or surface water sampling was performed as part of this assessment.
N OVA Page 8

Initial Abatement Action Report December 3, 2018
PreGel - Phase III Addition NOVA Project Number 1018005
8.0 INITIAL RESPONSE AND ABATEMENT ACTION
On May 23, 2018, during grading activities for additional site improvements on the western
portion of the Subject Property, a buried 550-gallon heating oil UST was encountered. NOVA
was contacted by Encompass, the general contractor for the Client, regarding the UST
following its discovery on May 23, 2018. NOVA informed Encompass and the Client that the
UST was considered a non -regulated, non-commercial heating oil UST and closure sampling
would only be necessary if a release was suspected. The residual fluids and sludge from the
UST were reportedly removed and disposed off -site by Stat Inc, on June 6, 2018. The UST
was reportedly removed from the ground and placed in an on -site dumpster for future off -site
disposal on June 7, 2018 by CK Contractors & Development, LLC (the grading contractor).
Following the UST removal activities, NOVA was contacted to assess the soil in the vicinity of
the removed UST due to observations by others that indicated a suspected release. NOVA
arrived on -site to collect the initial soil samples on June 7, 2018. Two (2) soil samples were
collected, one (1) from the stockpiled soils (S-1) and a second (S-2) from approximately one
(1) foot below the bottom of the UST or approximately six (6) feet bgs. Petroleum odors were
noted in the stockpile soils and from the base of the excavation. Sampling results indicated
that a release had occurred from the UST and a NC DEQ UST-61 Form (24-hour Release and
UST Leak Reporting Form) dated June 12, 2018 was completed and submitted to the NC DEQ.
A copy of the UST-61 Form is include in Appendix B of this report.
On July 23, 2018, NOVA collected three (3) vertical delineation soil samples from below the
removed UST. On August 9, 2018, NOVA collected four (4) horizontal delineation (sidewall)
soil samples and a vertical confirmation soil sample. The delineation sampling indicated that
the horizontal and vertical delineation samples were below the NC DEQ UST Action Levels
and/or MSCCs. Groundwater sampling was not performed due to vertical soil impact
delineation. On September 20, 2018, the UST pit stockpile and over excavated soils were
profiled and disposed at Republic Services' Charlotte Motor Speedway Landfill in Concord,
North Carolina. Atotal of 132.31 tons of petroleum impacted soil was removed and disposed.
N OVA Page 9

Initial Abatement Action Report December 3, 2018
PreGel - Phase III Addition NOVA Project Number 1018005
9.0 LABORATORY ANALYTICAL RESULTS
One (1) sample of the stockpiled soil from the UST pit was collected (S-1) on June 7, 2018 and
analyzed for Total Petroleum Hydrocarbons (TPH)-Gasoline Range Organics (GRO), TPH-Diesel
Range Organics (DRO) and Volatile Organic Compounds (VOCs). TPH-GRO was below laboratory
detection limits, and TPH-DRO was at 220 mg/kg which was above both the NC DEQ UST Section
Reporting and Action Level. Several VOCs including 1,2,4-tri methyl benzene, 1,3,5-
trimethylbenzene, acetone and naphthalene were detected at concentrations below their
respective MSCCs.
A total of five (5) soil samples were collected at various depths below the UST. On June 7, 2018,
soil sample S-2 was collected from approximately six (6) feet bgs (approximately one (1) foot
below UST) and was analyzed for TPH-GRO, TPH-DRO and VOCs. Soil sample S-2 contained a
TPH-GRO concentration of 200 mg/kg and a TPH-DRO concentration of 9,500 mg/kg, both of
which exceeded the UST Section Reporting and Action Level. Various VOCs were also detected
in soil sample S-2 with 1,2,4-tri methyl benzene at 8.7 mg/kg, 4-isopropyl benzene at 1.2 mg/kg,
total xylenes at 5.8 mg/kg, naphthalene at 7.4 mg/kg and n-propylbenzene at 2.1 mg/kg which
exceed the Soil to Water MSCCs but were below the MSCC Residential and
Industrial/Commercial Soil Cleanup Levels. Other VOC concentrations were detected in the S-2
sample below their respective MSCCs.
On July 23, 2018, soil sample A was collected from approximately seven (7) feet bgs
(approximately two (2) feet below the UST), soil sample B was collected from approximately ten
(10) feet bgs (approximately five (5) feet below the UST) and soil sample C was collected from
approximately fourteen (14) feet bgs (approximately nine (9) feet below the UST), and they were
analyzed for TPH-GRO, TPH-DRO, Extractable Petroleum Hydrocarbons (EPH) and Semi-VOCs
(SVOCs). Analytical results for soil sample A indicated detections of TPH-GRO and TPH-DRO
below the UST Section Reporting and Action Levels. Additionally, soil sample A had a
concentration of EPH (carbon range C9-C18) and a SVOC concentration (pyrene) that were below
their MSCCs. Sample B had a detectable concentration of TPH-DRO that was below the UST
Section Reporting and Action Levels. Soil sample C had a detectable concentration of DRO that
was below the UST Section Reporting and Action Levels and a concentration of EPH (carbon
range C9-C18) that was below its MSCCs.
On August 9, 2018, NOVA collected soil sample SG-1 at the same interval as soil sample B and
analyzed it for EPH and VOCs (previously not tested at this interval). SG-1 had no detectable
concentrations of EPH and had a single VOC constituent detection (acetone at 0.015 J mg/kg).
This detected concentration of acetone is below its MSCCs and is likely the result of the labs use
of acetone as a cleaner or from the interaction of the sample preservative and organic material
present in the soil sample.
N OVA Page 10

Initial Abatement Action Report
PreGel - Phase III Addition
December 3, 2018
NOVA Project Number 1018005
On August 9, 2018, four (4) sidewall samples (SW-1, SW-2, SW-3, and SW-4) were collected at
approximately 4.5 - 5.5 feet from each side of the UST and approximately five (5) feet bgs. Each
sidewall sample was analyzed for Volatile Petroleum Hydrocarbons (VPH), EPH, VOCs, and
SVOCs. Soil sample SW-1 had detectable concentrations of VPH (carbon ranges C5-C8 and C9-
C12) that were below their MSCCs. Soil sample SW-2 had a single VOC concentration (acetone)
that was below its MSCCs. Soil sample SW-3 had a single VOC concentration (methylene
chloride) that was below its MSCCs. Soil sample SW-4 had a single SVOC concentration (benzoic
acid) that was below its MSCCs.
A table summarizing the laboratory analytical results is included in Appendix A. Copies of the
laboratory analytical reports are located in Appendix D
N OVA Page 11

Initial Abatement Action Report
PreGel - Phase III Addition
December 3, 2018
NOVA Project Number 1018005
10.0 EXCAVATION OF CONTAMINATED SOIL
A UST pit measuring approximately fifteen (15) feet long by fifteen (15) feet wide by ten (10) feet
deep was excavated around the former location of the 550-gallon heating oil UST. Approximately
eighty-eight (88) cubic yards or 132 tons of soil was removed from the former UST pit and was
loaded into eleven (11) tandem -axle dump trucks for transport under manifest to Republic
Services' CMS Landfill located in Concord, North Carolina. Copies of the waste disposal
manifests are provided in Appendix E.
N OVA Page 12

Initial Abatement Action Report December 3, 2018
PreGel - Phase III Addition NOVA Project Number 1018005
11.0 CONCLUSION AND RECOMMENDATIONS
Initial soil sampling from the stockpiled overburden soil indicated elevated concentrations of
TPH-DRO, and the initial soil sample collected from the base of the UST pit indicated elevated
TPH-GRO, TPH-DRO, and various petroleum -related VOC constituents. Subsequent delineation
sampling indicated no detected concentrations of VPH, EPH, VOCs, or SVOCs above the
applicable MSCCs in the horizontal delineation (sidewall) samples and no detected
concentrations of EPH, VOCs, or SVOCs above the applicable MSCCs in the vertical delineation
samples collected greater than ten (10) feet below historic ground surface. Additionally, there
were no TPH-GRO or TPH-DRO concentrations detected above the UST Section Reporting and
Action Levels in the vertical delineation soil samples.
Based on the removal and proper disposal of the stockpiled overburden soils, the over -excavated
soils to a dimension fifteen (15) feet wide by fifteen (15) feet long by ten (10) feet deep, removal
of the UST, and the horizontal and vertical delineation soil sample results indicating no impacted
soils are present above the applicable MSCCs, NOVA recommends a No Further Action status be
granted for this facility.
N OVA Page 13

APPENDIX A
FIGURES AND TABLES

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UST Location
FIGURE 1
SITE LOCATION MAP
SOURCE: maps.yahoo.com & Cabarrus Co. GIS
DATE: Unknown
SCALE: As Shown
Concord
Mt Pleasant
Pocky
giver
L o ❑tst
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Oakboro
6YP
NOVA
PR0FE55IONAL I PRACTICAL I PROVEN
-6n 106 7mi _
I Approximate Subject I
Property Boundary
PREGELAMERICA, INC.
PreGel - Phase III Addition
Concord, Cabarrus County, NC
NOVA Project Number 1018005

UST Location
O
901
or
- . - m1mv
0 Miles 025 0.5 1 1.5
FIGURE 2 PREGEL AMERICA, INC.
^^TOPOGRAPHIC MAP IN OVA
PreGel -Phase III Addition
USGS Kannapolis Topographic Quadrangle Concord, Cabarrus County, NC

FIGURE 3
SAMPLING LOCATION AND EXCAVATION EXTENT MAP
SOURCE: www.google.com
SCALE: As Shown
NOVA
PROFESSIONAL I PRACTICAL I PROVEN
PREGEL AMERICA, INC.
PreGel - Phase III Addition
Concord, Cabarrus County, NC
NOVA Project Number 1018005

N OVA
PreGel - Phase III Addition
Table 1. Summary of Soil Laboratory Analytical Results
v
c
�
a
c
N
N
Date
Sample
Total Petroleum Hydrocarbons
Volatile Petroleum Hydrocarbons
Extractable Petroleum Hydrocarbons
C
s
C
s
N
o
y
o
a
c
v
Sample ID
Collected
Depth (ft)
y
£E
y
a
N
v
a
c
d
s
v
s
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O
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o
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O
X
v
T
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7
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>
H
Y
CL
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N
L
a0
O
a
rL
U
a)
O
2
c
c
O
H
O
H
N
m
>
a
O
H
GRO
DR O
CS-C8
C9-C10
C9-C32
C9-C18
C31-C22
C19-C36
VOCs by EPA
8260E
SVOCs
by EPA 8270D
S-1(stockpile)
-
ND
220
NA
NA
NA
NA
NA
NA
0.0039J
0.0032J
0.039J
ND
ND
ND
ND
ND
0.011J
ND
ND
ND
ND
0.0571J
NA
NA
NA
S-2
6/7/18
6'
200
9500
NA
NA
NA
NA
NA
NA
8.7
3.5
ND
1.2
1.4
1.1
5.8
ND
7.4
2.1
2.1
1.9
0.58
35.78
NA
NA
NA
A
7'
0.055.1
0.25.1
NA
NA
NA
0.36J
NO
ND
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
ND
0.11J
0.11J
B
7/23/18
10'
ND
0.151
NA
NA
NA
ND
NO
ND
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
ND
ND
ND
C
14'
ND
0.111
NA
NA
NA
0.66J
NO
ND
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
ND
ND
ND
SG-1
10'
NA
NA
NA
NA
NA
ND
NO
ND
ND
ND
0.015J
I ND
ND
ND
ND
I ND
ND
ND
I ND
ND
I ND
0.015J
NA
NA
NA
SW-1
5'
NA
NA
0.33 J
ND
2.3 J
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
I ND
SW-2
8/9/2018
5'
NA
NA
ND
ND
ND
ND
ND
ND
ND
ND
0.018J
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
SW-3
5'
NA
NA
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.016
ND
ND
ND
ND
ND
0.016
ND
ND
ND
SW-4
5'
NA
NA
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
ND
0.50
ND
0.50
DEQ UST Section Reporting Level (mg/kg)
10
10
DEQ UST Section Action Level (mg/kg)
50
300
Soil to Water Maximum Soil Contaminant Concentration (mg/kg)*
68 31 540 540 31 # 1 8.5 1 8.3 1 24 1 0.12 1 4.9 1.7 1 4.6 1 0.02 1 0.16 1 4.3 1 1.7 1 3.3 1 4.3 1 NA 120 1 270 NA
Residential Soil Cleanup Levels (mg/kg)*
939 469 1,500 1,500 469 31,000 1 782 1 782 14,000 100 1,560 1,564 3,129 85 313 626 626 626 1,200 NA 62,571 1 469 NA
Industrial/Commercial Cleanup Levels (mg/kg)*
24,528 12,264 1 40,00071 40,000 1 12,264 1 810,000 20,440 20,440 360,000 4,000 40,000 1 40,880 81,760 763 8,176 16,350 16,350 16,350 32,000 NA ]FI,635,200T 12,264 1 NA
All results are reported in milligram per kilogram (mg/kg)
Results in YELLOW indicate a detection above NC DEQ thresholds
NO = Not Detected
NA = Not Analyzed
1 = Estimated concentration above the adjusted method detection limit and below the reporting limit
GRO = Gasoline Range Organics
DRO = Diesel Range Organics
VOCs = Volatile Organic Compounds
SVOCs = Semi -Volatile Organic Compounds

APPENDIX B
UST-61 FORM

UST-61
24-Hour Release and UST Leak Reporting Form.
For Releases This form should be completed and submitted to the UST Sections regional office following a known or suspected release from
an underground storage tank {UST} system This form is required to be submitted within 24 hours of discovery of a known or
in NC
suspected release
(DWM USE ONLY)
Suspected Contamination? (YIN) Y
Facility ID Number
Incident # Risk (H,I,L,U)
Confirmed GW Contamination? (YIN) N
Date Leak Discovered6712DIS
Received On Received By
Confirmed Soil Contamination ?(YIN) ,(
Comm1Non-Cammercial�
Reported by (circle one): Phone, Fax or Report
Samples Taken?(YIN) Y
Reg/Non-regulated? N R_
Region
Free Product? (�IINN) 7 if Yes, State Greatest
Thickness . _ N
INCIDENT DESCRIPTION
Incident Name: PreGel Phase 3
Address: 4450 Fortune Ave NW
County: Cabarrus
Regional Office (circle one): Ashevillii%2aeELtsvillpFayetteville,
CitylTown: Concord I Zip Code 28027
Raleigh. Washington, Wilmington, Winston a em
Latitude (decimal degrees): 35.427305 Longitude (decimal degrees) _-80.658501
Obtained by:
❑ GPS
Briefly describe suspected or confirmed release: (including but not limited to: nature of release, date of release, amount
of release, amount of free product present and recovery efforts. initial responses conducted, im acts to recep tors
❑ Topographic map
LGIS Address matching
❑ Other
❑ Unknown
Suspected residential heating oil tank discovered during site grading
Fluid and sludge within tank were pumped and disposed of by Haz-Mat, Inc.
Tank was removed and disposed of by Haz-Mat, Inc.
Petroleum odor were detected in soil excvated during removal and from
Describe location:
samples collected at base of excavation. Visual inspection of the tank
after removal indicated potential area for leaking historically.
HOW RELEASE WAS DISCOVERED (Release Code)
(Check one)
❑ Release Detection Equipment or Methods ❑ Visual/Odor ❑ Groundwater Contamination
LN During UST Closure/Removal ❑ Water in Tank ❑ Surface Water Contamination
❑ Property Transfer ❑ Water Supply Well Contamination Cl Other (specify)
SOURCE OF CONTAMINATION
Source of Release Cause of Release Type of Release Product Type Released
(Check one to indicate primary (Check one to indicate primary (Check one) (Check one to indicate primary product type
source) cause) released)
❑ Tank ❑ Spill IX Petroleum Gasoline/ Diesel? ❑ DieseWeg Oil
Kerosene Blend
❑ Piping ❑ Overfill ❑ Non -Petroleum Heating Oil ❑ Vegetable Oil 10V-;
❑ Dispenser ❑ Corrosion ❑ Both ❑ Other Petroleum ❑ E 10 -- E20
❑ Submersible Turbine Pump ❑ Physical or Mechanical Products (3
❑ Delivery Problem Damage Location ❑ Metals E21 E84
❑ ❑ E85 Egg
❑ Install Problem (Check one) Other Inorganics -
❑ Other
❑ Other Organics ❑ Ethanol 100°0
Other ❑Facility
l� Unknown
Unknown Residence ❑ E01 EO9
Definitions presented on reverse Derrnitions oresenled on reverse ❑ Other
Ownership
1 Municipal 2. Mi itary 3 Unknown 4 Pnvate . Federal 6. County 7. State
On-e_rafion Type
1 Public Service 2 Agricultural R�1 4 EducationiRelig 5 Industrial 6 Commercial 7 Mining
UST Form tit (02IOti) Page 1 of 2

IMPACT ON SUPPLIES
=ER
Water Supply Wells Affected? 1. Yes 2. No
Number of Water Supply Wells Affected
Water Supply Wells Contaminated: (include Users Names, Addresses and Phone Numbers. Attach additional sheet if necessary)
1. Unknown
2.
3.
UST SYSTEM OWNER
UST Owner/Company
Unknown
Point of Contact Address
City Slate Zip Code Telephone Numb, r
UST SYSTEM OPERATOR
UST Operator/Company Address
Unknown
City Stale Zip Cade Telephone Number
LANDOWNER AT LOCATION OF UST INCIDENT
Landowner Address
PreGel America, Inc 4450 Fortune Ave NW
City
State
Zip Code
Telephone Number
Concord
NC
28027
704.707.0300
Draw Sketch of Area (showing two major road intersections) or Attach Map
Person Reporting Incident Rusty chaptna
Company PreGel America Inc.
Telephone Number
Title Controller
I Address 4450 Fortune Ave NW, Concord, NC
Date 6/12/2018
UST Form 01 (07108)
Page 2 of 2
Definitions of Sources
Tank: means the tank that stores the product and is pan of the underground storage tank system
Piping: means the piping and connectors running from the lank or submersible turbine pump to the dispenser orather end•usc equipment (Vent, vapor recovery, or fill
lines are excluded.)
Dispenser: includes the dispenser and the equipment used to cc..nncet the dispenser to the piping (c g., a release from a suction pump or from components located above
the shear valve)
Submersible Turbine Pump (STP) Area includes the submersible turbine pump head (lypieally located in the tank sump), the line leak detector- and the piping that
connects the submersible turbine pump to the tank
Delivery Problem identifies releases that occurred during product delivery h; the tank. (T) pical causes associated with this source are spills and overfills.)
Other: serves as the option to use when the release source is known but does not fit into one of the preceding categories (e g, fur releases from vent lines, vapor
recovery lines, and fill lines)
Unknown: identifies releases for which the source has no been determined
Definitions of causes
Spill: use this cause when a spill occurs (e,g , when the delivery hcse is disconnected from the tank fill pipe or w hen the nozzle is removed from the dispenser)
Overfill: use when an overfill occurs (e g., overfills may occur from the fill pipe at the tad: or when the nozzle fails to shut off ai the dispenser)
Physical or Mechanical Damage- use for all types of physical or mechanical damage, except corrosion (e g., puncture of tank or piping, loose fittings, broken
components, and components that have changed dimension)
Corrosion: use when a metal tank, piping, or other component has a release due to corrosion to g , for steel, corrosion lakes the form of rust)
Installation Problem: use when the problem is determined to have occurred specifically because the UST system was not installed properly
Other: use this option when the cause is known but does not fit into nor- of the preceding categories (e g , putting regulated substances into monitoring wells)
Unknown: use w-hen the cause has not been determined

APPENDIX C
USGS WATER WELL SURVEY

Site:
Kear
Su-
Grc
p.Ar
•In
-.Di
w
--Ar
01
(®`Ar
•In
.Di
-W
NO
•Ar
Fo-Ls-p,
F0 At.
o-tt

APPENDIX D
SOIL LABORATORY DATA

Case Narrative
PRISM Full -Service Analytical &
Environmental Solutions
`,. LABORATORIES, INC.
NOVA Engineering & Environmental
Alex Robinson
5104 Reagan Drive Suite 8
Charlotte, NC 28206
NC Certification No. 402
NC Drinking Water Cert No. 37735
SC Certification No. 99012
Project: PreGel (Concord, NC)
Lab Submittal Date: 06/07/2018
Prism Work Order: 8060126
06/12/2018
This data package contains the analytical results for the project identified above and includes a Case Narrative, Sample
Results and Chain of Custody. Unless otherwise noted, all samples were received in acceptable condition and processed
according to the referenced methods.
Data qualifiers are flagged individually on each sample. A key reference for the data qualifiers appears at the end of this case
narrative.
Narrative Notes:
Please call if you have any questions relating to this analytical report.
Respectfully,
PRISM LABORATORIES, INC.
Angela D. Overcash Reviewed By Robbi A. Jones For Angela D. Overcash
VP Laboratory Services President/Project Manager
Data Qualifiers Key Reference:
BC Sample prepared from bulk container.
CCV CCV result is above the control limits. Analyte not detected in the sample. No further action taken.
DO Surrogates diluted out.
J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag).
BRL Below Reporting Limit
MDL Method Detection Limit
RPD Relative Percent Difference
* Results reported to the reporting limit. All other results are reported to the MDL with values between MDL and
reporting limit indicated with a J.
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 1 of 21

/.PAR I S M Full -Service Analytical &
Environmental Solutions
-LABORATORIES INC.
Sample Receipt Summary
06/12/2018
Prism Work Order: 8060126
Client Sample ID Lab Sample ID Matrix Date Sampled Date Received
S1 8060126-01 Solid 06/07/18 06/07/18
S2 8060126-02 Solid 06/07/18 06/07/18
Samples were received in good condition at 5.0 degrees C unless otherwise noted.
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 2 of 21

P R I S M Full Service Analytical &
Environmental Solutions
LABORATORIES, INC.
Summary of Detections
06/12/2018
Prism Work Order: 8060126
Prism ID
Client ID
Parameter
Method
Result
Units
8060126-01
S1
Diesel Range Organics
`8015C
220
mg/kg dry
8060126-01
S1
1,2,4-Trimethylbenzene
8260B
0.0039
1
mg/kg dry
8060126-01
S1
1,3,5-Trimethylbenzene
8260B
0.0032
1
mg/kg dry
8060126-01
S1
Acetone
8260B
0.039
J
mg/kg dry
8060126-01
S1
Naphthalene
8260E
0.011
1
mg/kg dry
8060126-02
S2
Diesel Range Organics
"8015C
9500
mg/kg dry
8060126-02
S2
Gasoline Range Organics
'8015C
200
mg/kg dry
8060126-02
S2
1,2,4-Trimethylbenzene
8260E
8.7
mg/kg dry
8060126-02
S2
1,3,5-Trimethylbenzene
8260E
3.5
mg/kg dry
8060126-02
S2
4-Isopropyltoluene
8260E
1.2
mg/kg dry
8060126-02
S2
Ethylbenzene
8260B
1.4
mg/kg dry
8060126-02
S2
Isopropyl benzene (Cumene)
8260E
1.1
mg/kg dry
8060126-02
S2
m,p-Xylenes
8260E
3.2
mg/kg dry
8060126-02
S2
Naphthalene
8260B
7.4
mg/kg dry
8060126-02
S2
n-Butylbenzene
8260E
2.1
mg/kg dry
8060126-02
S2
n-Propylbenzene
8260E
2.1
mg/kg dry
8060126-02
S2
o-Xylene
8260B
2.6
mg/kg dry
8060126-02
S2
sec -Butyl benzene
8260B
1.9
mg/kg dry
8060126-02
S2
Toluene
8260E
0.58
mg/kg dry
8060126-02
S2
Xylenes, total
8260E
5.8
mg/kg dry
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 3 of 21

Laboratory Report
` Full -Service Analytical &
/ environmental Solutions
P R S M
LABORATORIES INC.
06/12/2018
NOVA Engineering & Environmental
Project:
PreGel (Concord, NC)
Client
Sample ID:
S1
Attn: Alex Robinson
Prism
Sample ID:
8060126-01
5104 Reagan Drive Suite 8
Prism
Work Order: 8060126
Charlotte, NC 28206
Sample Matrix: Solid
Time Collected: 06/07/18
13:54
Time Submitted: 06/07/18 15:10
Parameter
Result
Units
Report
MDL
Dilution
Method
Analysis Analyst
Batch
Limit
Factor
Date/Time
ID
Diesel Range Organics by GC/FID
Diesel Range Organics
220
mg/kg dry
46
12
5
*8015C
6/8/18 12:58
ZRC
P8F0125
Surrogate
Recovery
Control Limits
o-Terphenyl
71 %
49-124
Gasoline Range Organics by GC/FID
Gasoline Range Organics
BRL
mg/kg dry
6.5
1.4
50
*8015C
6/8/18 12:54
ANG/J
P8F0131
Surrogate
Recovery
Control Limits
a,a,a-Trifluorotoluene
114
%
50-137
General Chemistry Parameters
% Solids
76.6
% by
0.100
0.100
1
*SM2540 G
6/7/18 15:30
TJY
P8F0133
Weight
Volatile Organic Compounds by GC/MS
BC
1,1,1,2-Tetrachloroethane
BRL
mg/kg dry
0.0067
0.00055
1
8260B
6/8/18 19:14
ANG
P81F0154
1,1,1-Trichloroethane
BRL
mg/kg dry
0.0067
0.00032
1
8260B
6/8/18 19:14
ANG
P81`0154
1,1,2,2-Tetrachloroethane
BRL
mg/kg dry
0.0067
0.00045
1
8260B
6/8/18 19:14
ANG
P81F0154
1,1,2-Trichloroethane
BRL
mg/kg dry
0.0067
0.00059
1
8260B
6/8/18 19:14
ANG
P81F0154
1,1-Dichloroethane
BRL
mg/kg dry
0.0067
0.00019
1
8260B
6/8/18 19:14
ANG
P81F0154
1,1-Dichloroethylene
BRL
mg/kg dry
0.0067
0.00030
1
8260B
6/8/18 19:14
ANG
P81=0154
1,1-Dichloropropylene
BRL
mg/kg dry
0.0067
0.00037
1
8260B
6/8/18 19:14
ANG
P81F0154
1,2,3-Trichlorobenzene
BRL
mg/kg dry
0.0067
0.00038
1
8260B
6/8/18 19:14
ANG
P81F0154
1,2,3-Trichloropropane
BRL
mg/kg dry
0.0067
0.00086
1
8260B
6/8/18 19:14
ANG
P81`0154
1,2,4-Trichlorobenzene
BRL CCV
mg/kg dry
0.0067
0.00050
1
8260B
6/8/18 19:14
ANG
P81F0154
1,2,4-Trimethyl benzene
0.0039 J
mg/kg dry
0.0067
0.00051
1
8260B
6/8/18 19:14
ANG
P8F0154
1,2-Dibromoethane
BRL
mg/kg dry
0.0067
0.00027
1
8260B
6/8/18 19:14
ANG
P81F0154
1,2-Dichlorobenzene
BRL CCV
mg/kg dry
0.0067
0.00031
1
8260B
6/8/18 19:14
ANG
P81`0154
1,2-Dichloroethane
BRL
mg/kg dry
0.0067
0.00040
1
8260B
6/8/18 19:14
ANG
P81F0154
1,2-Dichloropropane
BRL
mg/kg dry
0.0067
0.00042
1
8260B
6/8/18 19:14
ANG
P81`0154
1,3,5-Trimethyl benzene
0.0032 J
mg/kg dry
0.0067
0.00051
1
8260B
6/8/18 19:14
ANG
P8F0154
1,3-Dichlorobenzene
BRL CCV
mg/kg dry
0.0067
0.00044
1
8260B
6/8/18 19:14
ANG
P81`0154
1,3-Dichloropropane
BRL
mg/kg dry
0.0067
0.00034
1
8260B
6/8/18 19:14
ANG
P81F0154
1,4-Dichlorobenzene
BRL CCV
mg/kg dry
0.0067
0.00026
1
8260B
6/8/18 19:14
ANG
P81`0154
2,2-Dichloropropane
BRL
mg/kg dry
0.0067
0.00032
1
8260B
6/8/18 19:14
ANG
P81`0154
2-Chlorotoluene
BRL
mg/kg dry
0.0067
0.00035
1
8260B
6/8/18 19:14
ANG
P81`0154
4-Chlorotoluene
BRL
mg/kg dry
0.0067
0.00040
1
8260B
6/8/18 19:14
ANG
P81`0154
4-Isopropyltoluene
BRL
mg/kg dry
0.0067
0.00032
1
8260B
6/8/18 19:14
ANG
P81`0154
Acetone
0.039 J
mg/kg dry
0.067
0.0016
1
8260B
6/8/18 19:14
ANG
P8F0154
Benzene
BRL
mg/kg dry
0.0040
0.00039
1
8260B
6/8/18 19:14
ANG
P81`0154
Bromobenzene
BRL CCV
mg/kg dry
0.0067
0.00056
1
8260B
6/8/18 19:14
ANG
P81`0154
Bromochloromethane
BRL
mg/kg dry
0.0067
0.00037
1
8260B
6/8/18 19:14
ANG
P81F0154
Bromodichloromethane
BRL
mg/kg dry
0.0067
0.00037
1
8260B
6/8/18 19:14
ANG
P81F0154
Bromoform
BRL
mg/kg dry
0.0067
0.00076
1
8260B
6/8/18 19:14
ANG
P81F0154
Bromomethane
BRL
mg/kg dry
0.013
0.00083
1
8260B
6/8/18 19:14
ANG
P81=0154
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 4 of 21

Laboratory Report
` Full -Service Analytical
&
/ environmental Solutions
P R S M
LABORATORIES INC.
06/12/2018
NOVA Engineering & Environmental
Project: PreGel (Concord, NC)
Client Sample ID: S1
Attn: Alex Robinson
Prism Sample ID: 8060126-01
5104 Reagan Drive Suite 8
Prism Work Order: 8060126
Charlotte, NC 28206
Sample Matrix: Solid
Time Collected:
06/07/18 13:54
Time Submitted:
06/07/18 15:10
Parameter
Result
Units
Report
MDL
Dilution
Method
Analysis Analyst
Batch
Limit
Factor
Date/Time
ID
Carbon Tetrachloride
BRL
mg/kg dry
0.0067
0.00033
1
8260B
6/8/18 19:14
ANG
P81`0154
Chlorobenzene
BRL
mg/kg dry
0.0067
0.00036
1
8260B
6/8/18 19:14
ANG
P81F0154
Chloroethane
BRL
mg/kg dry
0.013
0.00056
1
8260B
6/8/18 19:14
ANG
P81F0154
Chloroform
BRL
mg/kg dry
0.0067
0.00048
1
8260B
6/8/18 19:14
ANG
P81F0154
Chloromethane
BRL
CCV mg/kg dry
0.0067
0.00045
1
8260B
6/8/18 19:14
ANG
P81F0154
cis-1,2-Dichloroethylene
BRL
mg/kg dry
0.0067
0.00029
1
8260B
6/8/18 19:14
ANG
P81F0154
cis-1,3-Dichloropropylene
BRL
mg/kg dry
0.0067
0.00023
1
8260B
6/8/18 19:14
ANG
P81F0154
Dibromochloromethane
BRL
mg/kg dry
0.0067
0.00028
1
8260B
6/8/18 19:14
ANG
P81`0154
Dichlorodifluoromethane
BRL
mg/kg dry
0.0067
0.00030
1
8260B
6/8/18 19:14
ANG
P81F0154
Ethylbenzene
BRL
mg/kg dry
0.0067
0.00026
1
8260B
6/8/18 19:14
ANG
P81`0154
Isopropyl Ether
BRL
mg/kg dry
0.0067
0.00027
1
8260B
6/8/18 19:14
ANG
P81`0154
Isopropylbenzene (Cumene)
BRL
mg/kg dry
0.0067
0.00040
1
8260B
6/8/18 19:14
ANG
P81`0154
m,p-Xylenes
BRL
mg/kg dry
0.013
0.00062
1
8260B
6/8/18 19:14
ANG
P81F0154
Methyl Butyl Ketone (2-Hexanone)
BRL
mg/kg dry
0.067
0.00061
1
8260B
6/8/18 19:14
ANG
P81F0154
Methyl Ethyl Ketone (2-Butanone)
BRL
mg/kg dry
0.13
0.00061
1
8260B
6/8/18 19:14
ANG
P81F0154
Methyl Isobutyl Ketone
BRL
mg/kg dry
0.067
0.00057
1
8260B
6/8/18 19:14
ANG
P81F0154
Methylene Chloride
BRL
mg/kg dry
0.013
0.00038
1
8260B
6/8/18 19:14
ANG
P81F0154
Methyl-tert-Butyl Ether
BRL
mg/kg dry
0.013
0.00021
1
8260B
6/8/18 19:14
ANG
P81F0154
Naphthalene
0.011
J mg/kg dry
0.013
0.00021
1
8260B
6/8/18 19:14
ANG
P8F0154
n-Butylbenzene
BRL
mg/kg dry
0.0067
0.00034
1
8260B
6/8/18 19:14
ANG
P81F0154
n-Propylbenzene
BRL
mg/kg dry
0.0067
0.00040
1
8260B
6/8/18 19:14
ANG
P81F0154
o-Xylene
BRL
mg/kg dry
0.0067
0.00027
1
8260B
6/8/18 19:14
ANG
P81F0154
sec-Butylbenzene
BRL
mg/kg dry
0.0067
0.00032
1
8260B
6/8/18 19:14
ANG
P81F0154
Styrene
BRL
mg/kg dry
0.0067
0.00040
1
8260B
6/8/18 19:14
ANG
P81`0154
tert-Butylbenzene
BRL
mg/kg dry
0.0067
0.00023
1
8260B
6/8/18 19:14
ANG
P81F0154
Tetrachloroethylene
BRL
mg/kg dry
0.0067
0.00032
1
8260B
6/8/18 19:14
ANG
P81`0154
Toluene
BRL
mg/kg dry
0.0067
0.00038
1
8260B
6/8/18 19:14
ANG
P81`0154
trans-1,2-Dichloroethylene
BRL
mg/kg dry
0.0067
0.00040
1
8260B
6/8/18 19:14
ANG
P81`0154
trans-1,3-Dichloropropylene
BRL
mg/kg dry
0.0067
0.00035
1
8260B
6/8/18 19:14
ANG
P81`0154
Trichloroethylene
BRL
mg/kg dry
0.0067
0.00043
1
8260B
6/8/18 19:14
ANG
P81F0154
Trichlorofluoromethane
BRL
mg/kg dry
0.0067
0.00043
1
8260B
6/8/18 19:14
ANG
P81F0154
Vinyl acetate
BRL
mg/kg dry
0.034
0.00092
1
8260B
6/8/18 19:14
ANG
P81F0154
Vinyl chloride
BRL
mg/kg dry
0.0067
0.00032
1
8260B
6/8/18 19:14
ANG
P81F0154
Xylenes, total
BRL
mg/kg dry
0.020
0.0013
1
8260B
6/8/18 19:14
ANG
P81F0154
Surrogate
Recovery
Control Limits
4-Bromofluorobenzene
99 %
70-130
Dibromofluoromethane
105 %
84-123
Toluene-d8
86 %
76-129
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 5 of 21

Laboratory Report
` Full -Service Analytical
&
/ environmental Solutions
P R S M
LABORATORIES INC.
06/12/2018
NOVA Engineering & Environmental
Project: PreGel (Concord, NC)
Client
Sample ID:
S2
Attn: Alex Robinson
Prism
Sample ID:
8060126-02
5104 Reagan Drive Suite 8
Prism
Work Order: 8060126
Charlotte, NC 28206
Sample Matrix: Solid
Time Collected: 06/07/18
14:06
Time Submitted: 06/07/18 15:10
Parameter
Result
Units
Report
MDL
Dilution
Method
Analysis Analyst
Batch
Limit
Factor
Date/Time
ID
Diesel Range Organics by GC/FID
Diesel Range Organics
9500
mg/kg dry
880
230
100
*8015C
6/8/18 14:16
ZRC
P8F0125
Surrogate
Recovery
Control Limits
o-Terphenyl
0 %
49-124
DO
Gasoline Range Organics by GC/FID
Gasoline Range Organics
200
mg/kg dry
63
13
500
*8015C
6/8/18 13:22
ANGM
P8F0131
Surrogate
Recovery
Control Limits
a,a,a-Trifluorotoluene
100 %
50-137
General Chemistry Parameters
% Solids
79.0
% by
0.100
0.100
1
*SM2540 G
6/7/18 15:30
TJY
P8F0133
Weight
Volatile Organic Compounds by GUMS
(Medium Level)
BC
1,1,1,2-Tetrachloroethane
BRL
mg/kg dry
0.32
0.081
50
8260B
6/8/18 20:09
ANG
P81`0172
1,1,1-Trichloroethane
BRL
mg/kg dry
0.32
0.075
50
8260B
6/8/18 20:09
ANG
P8F0172
1,1,2,2-Tetrachloroethane
BRL
mg/kg dry
0.32
0.062
50
8260B
6/8/18 20:09
ANG
P8F0172
1,1,2-Trichloroethane
BRL
mg/kg dry
0.32
0.078
50
8260B
6/8/18 20:09
ANG
P81F0172
1,1-Dichloroethane
BRL
mg/kg dry
0.32
0.085
50
8260B
6/8/18 20:09
ANG
P81`0172
1,1-Dichloroethylene
BRL
mg/kg dry
0.32
0.092
50
8260B
6/8/18 20:09
ANG
P81`0172
1,1-Dichloropropylene
BRL
mg/kg dry
0.32
0.073
50
8260B
6/8/18 20:09
ANG
P81`0172
1,2,3-Trichlorobenzene
BRL
mg/kg dry
0.64
0.076
50
8260B
6/8/18 20:09
ANG
P81F0172
1,2,3-Trichloropropane
BRL
mg/kg dry
0.32
0.11
50
8260B
6/8/18 20:09
ANG
P81F0172
1,2,4-Trichlorobenzene
BRL
mg/kg dry
0.64
0.069
50
8260B
6/8/18 20:09
ANG
P81=0172
1,2,4-Trimethyl benzene
8.7
mg/kg dry
0.32
0.071
50
8260B
6/8/18 20:09
ANG
P8F0172
1,2-Dibromoethane
BRL
mg/kg dry
0.32
0.072
50
8260B
6/8/18 20:09
ANG
P81=0172
1,2-Dichlorobenzene
BRL
mg/kg dry
0.32
0.070
50
8260B
6/8/18 20:09
ANG
P81=0172
1,2-Dichloroethane
BRL
mg/kg dry
0.32
0.069
50
8260B
6/8/18 20:09
ANG
P81=0172
1,2-Dichloropropane
BRL
mg/kg dry
0.32
0.064
50
8260B
6/8/18 20:09
ANG
P81F0172
1,3,5-Trimethyl benzene
3.5
mg/kg dry
0.32
0.079
50
8260B
6/8/18 20:09
ANG
P8F0172
1,3-Dichlorobenzene
BRL
mg/kg dry
0.32
0.063
50
8260B
6/8/18 20:09
ANG
P81=0172
1,3-Dichloropropane
BRL
mg/kg dry
0.32
0.077
50
8260B
6/8/18 20:09
ANG
P81=0172
1,4-Dichlorobenzene
BRL
mg/kg dry
0.32
0.084
50
8260B
6/8/18 20:09
ANG
P81F0172
2,2-Dichloropropane
BRL
mg/kg dry
0.32
0.073
50
8260B
6/8/18 20:09
ANG
P81F0172
2-Chlorotoluene
BRL
mg/kg dry
0.32
0.087
50
8260B
6/8/18 20:09
ANG
P81`0172
4-Chlorotoluene
BRL
mg/kg dry
0.32
0.075
50
8260B
6/8/18 20:09
ANG
P81F0172
4-Isopropyltoluene
1.2
mg/kg dry
0.32
0.080
50
8260B
6/8/18 20:09
ANG
P8F0172
Acetone
BRL
mg/kg dry
1.3
0.24
50
8260B
6/8/18 20:09
ANG
P81F0172
Benzene
BRL
mg/kg dry
0.32
0.071
50
8260B
6/8/18 20:09
ANG
P81`0172
Bromobenzene
BRL
mg/kg dry
0.32
0.075
50
8260B
6/8/18 20:09
ANG
P81F0172
Bromochloromethane
BRL
mg/kg dry
0.32
0.084
50
8260B
6/8/18 20:09
ANG
P81`0172
Bromodichloromethane
BRL
mg/kg dry
0.32
0.072
50
8260B
6/8/18 20:09
ANG
P81`0172
Bromoform
BRL
mg/kg dry
0.32
0.086
50
8260B
6/8/18 20:09
ANG
P81`0172
Bromomethane
BRL
mg/kg dry
0.64
0.084
50
8260B
6/8/18 20:09
ANG
P81`0172
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 6 of 21

Laboratory Report
` Full -Service Analytical &
/ environmental Solutions
P R S M
LABORATORIES INC.
06/12/2018
NOVA Engineering & Environmental
Project: PreGel (Concord, NC)
Client Sample ID: S2
Attn: Alex Robinson
Prism Sample ID: 8060126-02
5104 Reagan Drive Suite 8
Prism Work Order:
8060126
Charlotte, NC 28206
Sample Matrix: Solid
Time Collected:
06/07/18 14:06
Time Submitted:
06/07/18 15:10
Parameter
Result
Units
Report
MDL
Dilution
Method
Analysis Analyst
Batch
Limit
Factor
Date/Time
ID
Carbon Tetrachloride
BRL
mg/kg dry
0.32
0.077
50
8260B
6/8/18 20:09
ANG
P81`0172
Chlorobenzene
BRL
mg/kg dry
0.32
0.065
50
8260B
6/8/18 20:09
ANG
P81F0172
Chloroethane
BRL
mg/kg dry
0.64
0.066
50
8260B
6/8/18 20:09
ANG
P81F0172
Chloroform
BRL
mg/kg dry
0.32
0.074
50
8260B
6/8/18 20:09
ANG
P81F0172
Chloromethane
BRL
mg/kg dry
0.64
0.071
50
8260B
6/8/18 20:09
ANG
P81F0172
cis-1,2-Dichloroethylene
BRL
mg/kg dry
0.32
0.067
50
8260B
6/8/18 20:09
ANG
P81F0172
cis-1,3-Dichloropropylene
BRL
mg/kg dry
0.32
0.070
50
8260B
6/8/18 20:09
ANG
P81F0172
Dibromochloromethane
BRL
mg/kg dry
0.32
0.068
50
8260B
6/8/18 20:09
ANG
P81`0172
Dichlorodifluoromethane
BRL
mg/kg dry
0.64
0.083
50
8260B
6/8/18 20:09
ANG
P81F0172
Ethylbenzene
1.4
mg/kg dry
0.32
0.073
50
8260B
6/8/18 20:09
ANG
P8F0172
Isopropyl Ether
BRL
mg/kg dry
0.32
0.067
50
8260B
6/8/18 20:09
ANG
P81F0172
Isopropyl benzene (Cumene)
1.1
mg/kg dry
0.32
0.074
50
8260B
6/8/18 20:09
ANG
P8F0172
m,p-Xylenes
3.2
mg/kg dry
0.64
0.15
50
8260B
6/8/18 20:09
ANG
P8F0172
Methyl Butyl Ketone (2-Hexanone)
BRL
mg/kg dry
1.3
0.072
50
8260B
6/8/18 20:09
ANG
P81F0172
Methyl Ethyl Ketone (2-Butanone)
BRL
mg/kg dry
1.3
0.053
50
8260B
6/8/18 20:09
ANG
P81F0172
Methyl Isobutyl Ketone
BRL
mg/kg dry
1.3
0.056
50
8260B
6/8/18 20:09
ANG
P81F0172
Methylene Chloride
BRL
mg/kg dry
0.32
0.069
50
8260B
6/8/18 20:09
ANG
P81F0172
Methyl-tert-Butyl Ether
BRL
mg/kg dry
0.32
0.067
50
8260B
6/8/18 20:09
ANG
P81F0172
Naphthalene
7.4
mg/kg dry
0.64
0.049
50
8260B
6/8/18 20:09
ANG
P8F0172
n-Butylbenzene
2.1
mg/kg dry
0.32
0.064
50
8260B
618/18 20:09
ANG
P8F0172
n-Propylbenzene
2.1
mg/kg dry
0.32
0.075
50
8260B
618118 20:09
ANG
P8F0172
o-Xylene
2.6
mg/kg dry
0.32
0.070
50
8260B
6/8/18 20:09
ANG
P8F0172
sec-Butylbenzene
1.9
mg/kg dry
0.32
0.079
50
8260B
6/8/18 20:09
ANG
P8F0172
Styrene
BRL
mg/kg dry
0.32
0.071
50
8260B
6/8/18 20:09
ANG
P81F0172
tert-Butylbenzene
BRL
mg/kg dry
0.32
0.075
50
8260B
6/8/18 20:09
ANG
P81F0172
Tetrachloroethylene
BRL
mg/kg dry
0.32
0.068
50
8260B
6/8/18 20:09
ANG
P81F0172
Toluene
0.58
mg/kg dry
0.32
0.068
50
8260B
6/8/18 20:09
ANG
P8F0172
trans-1,2-Dichloroethylene
BRL
mg/kg dry
0.32
0.074
50
8260B
6/8/18 20:09
ANG
P81F0172
trans-1,3-Dichloropropylene
BRL
mg/kg dry
0.32
0.068
50
8260B
6/8/18 20:09
ANG
P81F0172
Trichloroethylene
BRL
mg/kg dry
0.32
0.069
50
8260B
6/8/18 20:09
ANG
P81F0172
Trichlorofluoromethane
BRL
mg/kg dry
0.64
0.091
50
8260B
6/8/18 20:09
ANG
P81F0172
Vinyl acetate
BRL
mg/kg dry
1.3
0.053
50
8260B
6/8/18 20:09
ANG
P81`0172
Vinyl chloride
BRL
mg/kg dry
0.64
0.089
50
8260B
6/8/18 20:09
ANG
P81F0172
Xylenes, total
5.8
mg/kg dry
0.96
0.22
50
8260B
6/8/18 20:09
ANG
P8F0172
Surrogate
Recovery
Control Limits
4-Bromofluorobenzene
94 %
70-130
Dibromofluoromethane
94 %
70-130
Toluene-d8
89 %
70-130
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 7 of 21

/r E
P R I IS M Service Analytical
Environmental Solutions
LABORATORIES, INC.
Level II QC Report
6/12/18
NOVA Engineering & Environmental Project: PreGel (Concord, NC)
Attn: Alex Robinson
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Volatile Organic Compounds by GC/MS - Quality Control
Analyte
Batch P8FO154 - 5035
Reporting
Result Limit Units
Prism Work Order: 8060126
Time Submitted: 6/7/2018 3:10:OOPM
Spike Source %REC RPD
Level Result %REC Limits RPD Limit Notes
Blank (P8F0154-1131-K1)
Prepared & Analyzed: 06/08/18
1,1,1,2-Tetrachloroethane
BRL
0.0050
mg/kg wet
1,1,1-Trichloroethane
BRL
0.0050
mg/kg wet
1,1,2,2-Tetrachloroethane
BRL
0.0050
mg/kg wet
1,1,2-Trichloroethane
BRL
0.0050
mg/kg wet
1,1-Dichloroethane
BRL
0.0050
mg/kg wet
1,1-Dichloroethylene
BRL
0.0050
mg/kg wet
1,1-Dichloropropylene
BRL
0.0050
mg/kg wet
1,2,3-Trichlorobenzene
BRL
0.0050
mg/kg wet
1,2,3-Trichloropropane
BRL
0.0050
mg/kg wet
1,2,4-Trichlorobenzene
BRL
0.0050
mg/kg wet
CCv
1,2,4-Trimethyl benzene
BRL
0.0050
mg/kg wet
1,2-Dibromoethane
BRL
0.0050
mg/kg wet
1,2-Dichlorobenzene
BRL
0.0050
mg/kg wet
CCV
1,2-Dichloroethane
BRL
0.0050
mg/kg wet
1,2-Dichloropropane
BRL
0.0050
mg/kg wet
1,3,5-Trimethyl benzene
BRL
0.0050
mg/kg wet
1,3-Dichlorobenzene
BRL
0.0050
mg/kg wet
CCv
1,3-Dichloropropane
BRL
0.0050
mg/kg wet
1,4-Dichlorobenzene
BRL
0.0050
mg/kg wet
CCv
2,2-Dichloropropane
BRL
0.0050
mg/kg wet
2-Chlorotoluene
BRL
0.0050
mg/kg wet
4-Chlorotoluene
BRL
0.0050
mg/kg wet
4-Isopropyltoluene
BRL
0.0050
mg/kg wet
Acetone
BRL
0.050
mg/kg wet
Benzene
BRL
0.0030
mg/kg wet
Bromobenzene
BRL
0.0050
mg/kg wet
CCv
Bromochloromethane
BRL
0.0050
mg/kg wet
Bromodichloromethane
BRL
0.0050
mg/kg wet
Bromoform
BRL
0.0050
mg/kg wet
Bromomethane
BRL
0.010
mg/kg wet
Carbon Tetrachloride
BRL
0.0050
mg/kg wet
Chlorobenzene
BRL
0.0050
mg/kg wet
Chloroethane
BRL
0.010
mg/kg wet
Chloroform
BRL
0.0050
mg/kg wet
Chloromethane
BRL
0.0050
mg/kg wet
CCv
cis-1,2-Dichloroethylene
BRL
0.0050
mg/kg wet
cis-1,3-Dichloropropylene
BRL
0.0050
mg/kg wet
Dibromochloromethane
BRL
0.0050
mg/kg wet
Dichlorodifluoromethane
BRL
0.0050
mg/kg wet
Ethylbenzene
BRL
0.0050
mg/kg wet
Isopropyl Ether
BRL
0.0050
mg/kg wet
Isopropylbenzene (Cumene)
BRL
0.0050
mg/kg wet
m,p-Xylenes
BRL
0.010
mg/kg wet
Methyl Butyl Ketone (2-Hexanone)
BRL
0.050
mg/kg wet
Methyl Ethyl Ketone (2-Butanone)
BRL
0.10
mg/kg wet
Methyl Isobutyl Ketone
BRL
0.050
mg/kg wet
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 8 of 21

P R I IS M Full -Service Analytical &
Environmental Solutions
LABORATORIES, INC.
Level II QC Report
6/12/18
NOVA Engineering & Environmental
Attn: Alex Robinson
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Volatile Organic Compounds by GC/MS - Quality Control
Prism Work Order: 8060126
Time Submitted: 6/7/2018 3:10:OOPM
Reporting Spike Source %REC RPD
Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes
Batch P8FO154 - 5035
Blank (P8F0154-BLK1)
Prepared & Analyzed: 06/08/18
Methylene Chloride
BRL
0.010
mg/kg wet
Methyl-tert-Butyl Ether
BRL
0.010
mg/kg wet
Naphthalene
BRL
0.010
mg/kg wet
n-Butylbenzene
BRL
0.0050
mg/kg wet
n-Propylbenzene
BRL
0.0050
mg/kg wet
o-Xylene
BRL
0.0050
mg/kg wet
sec-Butylbenzene
BRL
0.0050
mg/kg wet
Styrene
BRL
0.0050
mg/kg wet
tert-Butyl benzene
BRL
0.0050
mg/kg wet
Tetrachloroethylene
BRL
0.0050
mg/kg wet
Toluene
BRL
0.0050
mg/kg wet
trans- 1,2-Dichloroethylene
BRL
0.0050
mg/kg wet
trans- 1,3-Dichloropropylene
BRL
0.0050
mg/kg wet
Trichloroethylene
BRL
0.0050
mg/kg wet
Trichlorofluoromethane
BRL
0.0050
mg/kg wet
Vinyl acetate
BRL
0.025
mg/kg wet
Vinyl chloride
BRL
0.0050
mg/kg wet
Xylenes, total
BRL
0.015
mg/kg wet
Surrogate:4-Bromofluorobenzene
50.7
ug/L
50.00 101 70-130
Surrogate: Dibromofluoromethane
51.8
ug/L
50.00 104 84-123
Surrogate: Toluene-d8
44.6
ug/L
50.00 89 76-129
LCS (P8FO154-BS1)
Prepared
& Analyzed: 06/08/18
1,1,1,2-Tetrachloroethane
0.0404
0.0050
mg/kg wet
0.05000
81
72-115
1,1,1-Trichloroethane
0.0432
0.0050
mg/kg wet
0.05000
86
67-131
1,1,2,2-Tetrachloroethane
0.0383
0.0050
mg/kg wet
0.05000
77
56-126
1,1,2-Trichloroethane
0.0398
0.0050
mg/kg wet
0.05000
80
70-133
1,1-Dichloroethane
0.0432
0.0050
mg/kg wet
0.05000
86
74-127
1,1-Dichloroethylene
0.0453
0.0050
mg/kg wet
0.05000
91
67-149
1, 1 -Dichloropropylene
0.0462
0.0050
mg/kg wet
0.05000
92
71-130
1,2,3-Trichlorobenzene
0.0353
0.0050
mg/kg wet
0.05000
71
68-130
1,2,3-Trichloropropane
0.0375
0.0050
mg/kg wet
0.05000
75
60-137
1,2,4-Trichlorobenzene
0.0366
0.0050
mg/kg wet
0.05000
73
66-125
CCV
1,2,4-Trimethylbenzene
0.0398
0.0050
mg/kg wet
0.05000
80
69-129
1,2-Dibromoethane
0.0410
0.0050
mg/kg wet
0.05000
82
70-132
1,2-Dichlorobenzene
0.0365
0.0050
mg/kg wet
0.05000
73
72-123
CCV
1,2-Dichloroethane
0.0441
0.0050
mg/kg wet
0.05000
88
68-128
1,2-Dichloropropane
0.0458
0.0050
mg/kg wet
0.05000
92
73-130
1,3,5-Trimethylbenzene
0.0390
0.0050
mg/kg wet
0.05000
78
69-128
1,3-Dichlorobenzene
0.0362
0.0050
mg/kg wet
0.05000
72
71-120
CCV
1,3-Dichloropropane
0.0407
0.0050
mg/kg wet
0.05000
81
75-124
1,4-Dichlorobenzene
0.0363
0.0050
mg/kg wet
0.05000
73
71-123
CCV
2,2-Dichloropropane
0.0437
0.0050
mg/kg wet
0.05000
87
50-142
2-Chlorotoluene
0.0375
0.0050
mg/kg wet
0.05000
75
67-124
4-Chlorotoluene
0.0382
0.0050
mg/kg wet
0.05000
76
71-126
4-Isopropyltoluene
0.0397
0.0050
mg/kg wet
0.05000
79
68-129
Acetone
0.0872
0.050
mg/kg wet
0.1000
87
29-198
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 9 of 21

P R I IS M Full -Service Analytical &
Environmental Solutions
LABORATORIES, INC.
Level II QC Report
6/12/18
NOVA Engineering & Environmental
Attn: Alex Robinson
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Volatile Organic Compounds by GC/MS - Quality Control
Prism Work Order: 8060126
Time Submitted: 6/7/2018 3:10:OOPM
Reporting
Spike Source
%REC
RPD
Analyte
Result
Limit
Units
Level Result
%REC
Limits RPD
Limit Notes
Batch P8FO154 - 5035
LCS (P8F0154-BS1)
Prepared & Analyzed: 06/08/18
Benzene
0.0460
0.0030
mg/kg wet
0.05000
92
74-127
Bromobenzene
0.0370
0.0050
mg/kg wet
0.05000
74
73-125
CCV
Bromochloromethane
0.0437
0.0050
mg/kg wet
0.05000
87
72-134
Bromodichloromethane
0.0452
0.0050
mg/kg wet
0.05000
90
75-122
Bromoform
0.0423
0.0050
mg/kg wet
0.05000
85
66-135
Bromomethane
0.0460
0.010
mg/kg wet
0.05000
92
20-180
Carbon Tetrachloride
0.0447
0.0050
mg/kg wet
0.05000
89
64-143
Chlorobenzene
0.0378
0.0050
mg/kg wet
0.05000
76
74-118
Chloroethane
0.0557
0.010
mg/kg wet
0.05000
111
33-149
Chloroform
0.0436
0.0050
mg/kg wet
0.05000
87
73-127
Chloromethane
0.0358
0.0050
mg/kg wet
0.05000
72
45-143
CCV
cis-1,2-Dichloroethylene
0.0447
0.0050
mg/kg wet
0.05000
89
76-134
cis-1,3-Dichloropropylene
0.0479
0.0050
mg/kg wet
0.05000
96
71-125
Dibromochloromethane
0.0401
0.0050
mg/kg wet
0.05000
80
73-122
Dichlorodifluoromethane
0.0395
0.0050
mg/kg wet
0.05000
79
26-146
Ethylbenzene
0.0461
0.0050
mg/kg wet
0.05000
92
74-128
Isopropyl Ether
0.0446
0.0050
mg/kg wet
0.05000
89
59-159
Isopropylbenzene (Cumene)
0.0402
0.0050
mg/kg wet
0.05000
80
68-126
m,p-Xylenes
0.0857
0.010
mg/kg wet
0.1000
86
75-124
Methyl Butyl Ketone (2-Hexanone)
0.0447
0.050
mg/kg wet
0.05000
89
61-157
J
Methyl Ethyl Ketone (2-Butanone)
0.0453
0.10
mg/kg wet
0.05000
91
63-149
J
Methyl Isobutyl Ketone
0.0492
0.050
mg/kg wet
0.05000
98
57-162
J
Methylene Chloride
0.0418
0.010
mg/kg wet
0.05000
84
74-129
Methyl-tert-Butyl Ether
0.0436
0.010
mg/kg wet
0.05000
87
70-130
Naphthalene
0.0405
0.010
mg/kg wet
0.05000
81
57-157
n-Butylbenzene
0.0403
0.0050
mg/kg wet
0.05000
81
65-135
n-Propylbenzene
0.0389
0.0050
mg/kg wet
0.05000
78
67-130
o-Xylene
0.0434
0.0050
mg/kg wet
0.05000
87
74-126
sec-Butylbenzene
0.0396
0.0050
mg/kg wet
0.05000
79
66-131
Styrene
0.0430
0.0050
mg/kg wet
0.05000
86
77-121
tert-Butyl benzene
0.0390
0.0050
mg/kg wet
0.05000
78
67-132
Tetrachloroethylene
0.0423
0.0050
mg/kg wet
0.05000
85
68-130
Toluene
0.0459
0.0050
mg/kg wet
0.05000
92
71-129
trans- 1,2-Dichloroethylene
0.0446
0.0050
mg/kg wet
0.05000
89
73-132
trans- 1,3-Dichloropropylene
0.0472
0.0050
mg/kg wet
0.05000
94
68-123
Trichloroethylene
0.0445
0.0050
mg/kg wet
0.05000
89
75-133
Trichlorofluoromethane
0.0513
0.0050
mg/kg wet
0.05000
103
44-146
Vinyl acetate
0.0563
0.025
mg/kg wet
0.05000
113
85-161
Vinyl chloride
0.0470
0.0050
mg/kg wet
0.05000
94
48-147
Xylenes, total
0.129
0.015
mg/kg wet
0.1500
86
74-126
Surrogate:4-Bromofluorobenzene
48.7
ug/L
50.00
97
70-130
Surrogate: Dibromofluoromethane
49.6
ug/L
50.00
99
84-123
Surrogate: Toluene-d8
44.9
ug/L
50.00
90
76-129
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 10 of 21

P R I IS M Full -Service Analytical &
Environmental Solutions
LABORATORIES, INC.
Level II QC Report
6/12/18
NOVA Engineering & Environmental
Attn: Alex Robinson
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Volatile Organic Compounds by GC/MS - Quality Control
Prism Work Order: 8060126
Time Submitted: 6/7/2018 3:10:OOPM
Reporting
Spike Source
%REC
RPD
Analyte
Result
Limit
Units
Level Result
%REC
Limits
RPD
Limit
Notes
Batch P8FO154 - 5035
LCS Dup (P8F0154-BSD1)
Prepared & Analyzed: 06/08/18
1,1,1,2-Tetrachloroethane
0.0395
0.0050
mg/kg wet
0.05000
79
72-115
2
20
1,1,1-Trichloroethane
0.0412
0.0050
mg/kg wet
0.05000
82
67-131
5
20
1,1,2,2-Tetrachloroethane
0.0374
0.0050
mg/kg wet
0.05000
75
56-126
2
20
1,1,2-Trichloroethane
0.0394
0.0050
mg/kg wet
0.05000
79
70-133
0.9
20
1,1-Dichloroethane
0.0417
0.0050
mg/kg wet
0.05000
83
74-127
4
20
1,1-Dichloroethylene
0.0424
0.0050
mg/kg wet
0.05000
85
67-149
7
20
1, 1 -Dichloropropylene
0.0438
0.0050
mg/kg wet
0.05000
88
71-130
5
20
1,2,3-Trichlorobenzene
0.0358
0.0050
mg/kg wet
0.05000
72
68-130
1
20
1,2,3-Trichloropropane
0.0366
0.0050
mg/kg wet
0.05000
73
60-137
2
20
1,2,4-Trichlorobenzene
0.0360
0.0050
mg/kg wet
0.05000
72
66-125
2
20
CCV
1,2,4-Trimethylbenzene
0.0380
0.0050
mg/kg wet
0.05000
76
69-129
5
20
1,2-Dibromoethane
0.0400
0.0050
mg/kg wet
0.05000
80
70-132
2
20
1,2-Dichlorobenzene
0.0358
0.0050
mg/kg wet
0.05000
72
72-123
2
20
CCV
1,2-Dichloroethane
0.0445
0.0050
mg/kg wet
0.05000
89
68-128
0.9
20
1,2-Dichloropropane
0.0445
0.0050
mg/kg wet
0.05000
89
73-130
3
20
1,3,5-Trimethylbenzene
0.0374
0.0050
mg/kg wet
0.05000
75
69-128
4
20
1,3-Dichlorobenzene
0.0352
0.0050
mg/kg wet
0.05000
70
71-120
3
20
CCV
1,3-Dichloropropane
0.0410
0.0050
mg/kg wet
0.05000
82
75-124
0.7
20
1,4-Dichlorobenzene
0.0355
0.0050
mg/kg wet
0.05000
71
71-123
2
20
CCV
2,2-Dichloropropane
0.0416
0.0050
mg/kg wet
0.05000
83
50-142
5
20
2-Chlorotoluene
0.0360
0.0050
mg/kg wet
0.05000
72
67-124
4
20
4-Chlorotoluene
0.0367
0.0050
mg/kg wet
0.05000
73
71-126
4
20
4-Isopropyltoluene
0.0379
0.0050
mg/kg wet
0.05000
76
68-129
5
20
Acetone
0.0864
0.050
mg/kg wet
0.1000
86
29-198
0.9
20
Benzene
0.0440
0.0030
mg/kg wet
0.05000
88
74-127
4
20
Bromobenzene
0.0356
0.0050
mg/kg wet
0.05000
71
73-125
4
20
CCV
Bromochloromethane
0.0436
0.0050
mg/kg wet
0.05000
87
72-134
0.3
20
Bromodichloromethane
0.0445
0.0050
mg/kg wet
0.05000
89
75-122
2
20
Bromoform
0.0406
0.0050
mg/kg wet
0.05000
81
66-135
4
20
Bromomethane
0.0443
0.010
mg/kg wet
0.05000
89
20-180
4
20
Carbon Tetrachloride
0.0429
0.0050
mg/kg wet
0.05000
86
64-143
4
20
Chlorobenzene
0.0370
0.0050
mg/kg wet
0.05000
74
74-118
2
20
Chloroethane
0.0540
0.010
mg/kg wet
0.05000
108
33-149
3
20
Chloroform
0.0420
0.0050
mg/kg wet
0.05000
84
73-127
4
20
Chloromethane
0.0394
0.0050
mg/kg wet
0.05000
79
45-143
10
20
CCV
cis-1,2-Dichloroethylene
0.0434
0.0050
mg/kg wet
0.05000
87
76-134
3
20
cis-1,3-Dichloropropylene
0.0466
0.0050
mg/kg wet
0.05000
93
71-125
3
20
Dibromochloromethane
0.0406
0.0050
mg/kg wet
0.05000
81
73-122
1
20
Dichlorodifluoromethane
0.0363
0.0050
mg/kg wet
0.05000
73
26-146
8
20
Ethylbenzene
0.0442
0.0050
mg/kg wet
0.05000
88
74-128
4
20
Isopropyl Ether
0.0439
0.0050
mg/kg wet
0.05000
88
59-159
2
20
Isopropylbenzene (Cumene)
0.0378
0.0050
mg/kg wet
0.05000
76
68-126
6
20
m,p-Xylenes
0.0830
0.010
mg/kg wet
0.1000
83
75-124
3
20
Methyl Butyl Ketone (2-Hexanone)
0.0438
0.050
mg/kg wet
0.05000
88
61-157
2
20
J
Methyl Ethyl Ketone (2-Butanone)
0.0457
0.10
mg/kg wet
0.05000
91
63-149
0.8
20
J
Methyl Isobutyl Ketone
0.0481
0.050
mg/kg wet
0.05000
96
57-162
2
20
J
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, INC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 11 of 21

PRISM
R I S Full -Service Analytical s
Environmental Solutions
�- LABORATORIES, INC.
Level II QC Report
6/12/18
NOVA Engineering & Environmental Project: PreGel (Concord, NC)
Attn: Alex Robinson
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Volatile Organic Compounds by GC/MS - Quality Control
Analyte
Batch P8FO154 - 5035
Reporting
Result Limit Units
Prism Work Order: 8060126
Time Submitted: 6/7/2018 3:10:OOPM
Spike Source %REC RPD
Level Result %REC Limits RPD Limit Notes
LCS Dup (P8F0154-BSD1)
Prepared & Analyzed: 06/08/18
Methylene Chloride
0.0407
0.010
mg/kg wet
0.05000
81
74-129
3
20
Methyl-tert-Butyl Ether
0.0435
0.010
mg/kg wet
0.05000
87
70-130
0.1
20
Naphthalene
0.0408
0.010
mg/kg wet
0.05000
82
57-157
0.7
20
n-Butylbenzene
0.0385
0.0050
mg/kg wet
0.05000
77
65-135
5
20
n-Propylbenzene
0.0369
0.0050
mg/kg wet
0.05000
74
67-130
5
20
o-Xylene
0.0419
0.0050
mg/kg wet
0.05000
84
74-126
3
20
sec-Butylbenzene
0.0378
0.0050
mg/kg wet
0.05000
76
66-131
5
20
Styrene
0.0423
0.0050
mg/kg wet
0.05000
85
77-121
2
20
tert-Butylbenzene
0.0373
0.0050
mg/kg wet
0.05000
75
67-132
5
20
Tetrachloroethylene
0.0401
0.0050
mg/kg wet
0.05000
80
68-130
5
20
Toluene
0.0441
0.0050
mg/kg wet
0.05000
88
71-129
4
20
trans-1,2-Dichloroethylene
0.0421
0.0050
mg/kg wet
0.05000
84
73-132
6
20
trans- 1,3-Dichloropropylene
0.0470
0.0050
mg/kg wet
0.05000
94
68-123
0.3
20
Trichloroethylene
0.0423
0.0050
mg/kg wet
0.05000
85
75-133
5
20
Trichlorofluoromethane
0.0476
0.0050
mg/kg wet
0.05000
95
44-146
7
20
Vinyl acetate
0.0564
0.025
mg/kg wet
0.05000
113
85-161
0.2
20
Vinyl chloride
0.0446
0.0050
mg/kg wet
0.05000
89
48-147
5
20
Xylenes, total
0.125
0.015
mg/kg wet
0.1500
83
74-126
3
20
Surrogate:4-Bromofluorobenzene
48.1
ug/L
50.00
96
70-130
Surrogate: Dibromofluoromethane
49.5
ug/L
50.00
99
84-123
Surrogate: Toluene-d8
45.3
ug/L
50.00
91
76-129
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 12 of 21

PRISM
R I S Full -Service Analytical s
Environmental Solutions
�- LABORATORIES, INC.
Level II QC Report
6/12/18
NOVA Engineering & Environmental
Attn: Alex Robinson
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Volatile Organic Compounds by GC/MS (Medium Level) - Quality Control
Analyte
Batch P8FO172 - 5035
Prism Work Order: 8060126
Time Submitted: 6/7/2018 3:10:OOPM
Reporting Spike Source %REC RPD
Result Limit Units Level Result %REC Limits RPD Limit Notes
Blank (P8F0172-BLK1)
Prepared & Analyzed: 06/08/18
1,1,1,2-Tetrachloroethane
BRL
0.0050
mg/kg wet
1,1,1-Trichloroethane
BRL
0.0050
mg/kg wet
1,1,2,2-Tetrachloroethane
BRL
0.0050
mg/kg wet
1,1,2-Trichloroethane
BRL
0.0050
mg/kg wet
1,1-Dichloroethane
BRL
0.0050
mg/kg wet
1,1-Dichloroethylene
BRL
0.0050
mg/kg wet
1,1-Dichloropropylene
BRL
0.0050
mg/kg wet
1,2,3-Trichlorobenzene
BRL
0.010
mg/kg wet
1,2,3-Trichloropropane
BRL
0.0050
mg/kg wet
1,2,4-Trichlorobenzene
BRL
0.010
mg/kg wet
1,2,4-Trimethyl benzene
BRL
0.0050
mg/kg wet
1,2-Dibromoethane
BRL
0.0050
mg/kg wet
1,2-Dichlorobenzene
BRL
0.0050
mg/kg wet
1,2-Dichloroethane
BRL
0.0050
mg/kg wet
1,2-Dichloropropane
BRL
0.0050
mg/kg wet
1,3,5-Trimethyl benzene
BRL
0.0050
mg/kg wet
1,3-Dichlorobenzene
BRL
0.0050
mg/kg wet
1,3-Dichloropropane
BRL
0.0050
mg/kg wet
1,4-Dichlorobenzene
BRL
0.0050
mg/kg wet
2,2-Dichloropropane
BRL
0.0050
mg/kg wet
2-Chlorotoluene
BRL
0.0050
mg/kg wet
4-Chlorotoluene
BRL
0.0050
mg/kg wet
4-Isopropyltoluene
BRL
0.0050
mg/kg wet
Acetone
BRL
0.020
mg/kg wet
Benzene
BRL
0.0050
mg/kg wet
Bromobenzene
BRL
0.0050
mg/kg wet
Bromochloromethane
BRL
0.0050
mg/kg wet
Bromodichloromethane
BRL
0.0050
mg/kg wet
Bromoform
BRL
0.0050
mg/kg wet
Bromomethane
BRL
0.010
mg/kg wet
Carbon Tetrachloride
BRL
0.0050
mg/kg wet
Chlorobenzene
BRL
0.0050
mg/kg wet
Chloroethane
BRL
0.010
mg/kg wet
Chloroform
BRL
0.0050
mg/kg wet
Chloromethane
BRL
0.010
mg/kg wet
cis-1,2-Dichloroethylene
BRL
0.0050
mg/kg wet
cis-1,3-Dichloropropylene
BRL
0.0050
mg/kg wet
Dibromochloromethane
BRL
0.0050
mg/kg wet
Dichlorodifluoromethane
BRL
0.010
mg/kg wet
Ethylbenzene
BRL
0.0050
mg/kg wet
Isopropyl Ether
BRL
0.0050
mg/kg wet
Isopropylbenzene (Cumene)
BRL
0.0050
mg/kg wet
m,p-Xylenes
BRL
0.010
mg/kg wet
Methyl Butyl Ketone (2-Hexanone)
BRL
0.020
mg/kg wet
Methyl Ethyl Ketone (2-Butanone)
BRL
0.020
mg/kg wet
Methyl Isobutyl Ketone
BRL
0.020
mg/kg wet
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 13 of 21

PRISM
R I S Full -Service Analytical s
Environmental Solutions
�- LABORATORIES, INC.
Level II QC Report
6/12/18
NOVA Engineering & Environmental
Attn: Alex Robinson
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Volatile Organic Compounds by GC/MS (Medium Level) - Quality Control
Analyte
Batch P8FO172 - 5035
Prism Work Order: 8060126
Time Submitted: 6/7/2018 3:10:OOPM
Reporting Spike Source %REC RPD
Result Limit Units Level Result %REC Limits RPD Limit Notes
Blank (P8F0172-BLK1)
Prepared & Analyzed: 06/08/18
Methylene Chloride
BRL
0.0050
mg/kg wet
Methyl-tert-Butyl Ether
BRL
0.0050
mg/kg wet
Naphthalene
BRL
0.010
mg/kg wet
n-Butylbenzene
BRL
0.0050
mg/kg wet
n-Propylbenzene
BRL
0.0050
mg/kg wet
o-Xylene
BRL
0.0050
mg/kg wet
sec-Butylbenzene
BRL
0.0050
mg/kg wet
Styrene
BRL
0.0050
mg/kg wet
tert-Butylbenzene
BRL
0.0050
mg/kg wet
Tetrachloroethylene
BRL
0.0050
mg/kg wet
Toluene
BRL
0.0050
mg/kg wet
trans-1,2-Dichloroethylene
BRL
0.0050
mg/kg wet
trans- 1,3-Dichloropropylene
BRL
0.0050
mg/kg wet
Trichloroethylene
BRL
0.0050
mg/kg wet
Trichlorofluoromethane
BRL
0.010
mg/kg wet
Vinyl acetate
BRL
0.020
mg/kg wet
Vinyl chloride
BRL
0.010
mg/kg wet
Xylenes, total
BRL
0.015
mg/kg wet
Surrogate:4-Bromofluorobenzene
50.7
ug/L
50.00 101 70-130
Surrogate: Dibromofluoromethane
51.8
ug/L
50.00 104 70-130
Surrogate: Toluene-d8
44.6
ug/L
50.00 89 70-130
LCS (P8F0172-BS1)
Prepared & Analyzed: 06/08/18
1,1,1,2-Tetrachloroethane
0.0404
0.0050
mg/kg wet
0.05000
81
72-115
1,1,1-Trichloroethane
0.0432
0.0050
mg/kg wet
0.05000
86
72-123
1,1,2,2-Tetrachloroethane
0.0383
0.0050
mg/kg wet
0.05000
77
62-127
1,1,2-Trichloroethane
0.0398
0.0050
mg/kg wet
0.05000
80
73-123
1,1-Dichloroethane
0.0432
0.0050
mg/kg wet
0.05000
86
73-119
1,1-Dichloroethylene
0.0453
0.0050
mg/kg wet
0.05000
91
59-157
1,1-Dichloropropylene
0.0462
0.0050
mg/kg wet
0.05000
92
70-129
1,2,3-Trichlorobenzene
0.0353
0.010
mg/kg wet
0.05000
71
59-133
1,2,3-Trichloropropane
0.0375
0.0050
mg/kg wet
0.05000
75
52-137
1,2,4-Trichlorobenzene
0.0366
0.010
mg/kg wet
0.05000
73
66-123
1,2,4-Trimethyl benzene
0.0398
0.0050
mg/kg wet
0.05000
80
69-126
1,2-Dibromoethane
0.0410
0.0050
mg/kg wet
0.05000
82
69-127
1,2-Dichlorobenzene
0.0365
0.0050
mg/kg wet
0.05000
73
70-121
1,2-Dichloroethane
0.0441
0.0050
mg/kg wet
0.05000
88
69-125
1,2-Dichloropropane
0.0458
0.0050
mg/kg wet
0.05000
92
75-124
1,3,5-Trimethyl benzene
0.0390
0.0050
mg/kg wet
0.05000
78
69-124
1,3-Dichlorobenzene
0.0362
0.0050
mg/kg wet
0.05000
72
70-121
1,3-Dichloropropane
0.0407
0.0050
mg/kg wet
0.05000
81
70-124
1,4-Dichlorobenzene
0.0363
0.0050
mg/kg wet
0.05000
73
71-119
2,2-Dichloropropane
0.0437
0.0050
mg/kg wet
0.05000
87
46-154
2-Chlorotoluene
0.0375
0.0050
mg/kg wet
0.05000
75
70-121
4-Chlorotoluene
0.0382
0.0050
mg/kg wet
0.05000
76
72-126
4-Isopropyltoluene
0.0397
0.0050
mg/kg wet
0.05000
79
71-126
Acetone
0.0872
0.020
mg/kg wet
0.1000
87
12-196
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 14 of 21

P R I IS M Full -Service Analytical &
Environmental Solutions
LABORATORIES, INC.
Level II QC Report
6/12/18
NOVA Engineering & Environmental
Attn: Alex Robinson
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Volatile Organic Compounds by GC/MS (Medium Level) - Quality Control
Analyte
Batch P8FO172 - 5035
Prism Work Order: 8060126
Time Submitted: 6/7/2018 3:10:OOPM
Reporting Spike Source %REC RPD
Result Limit Units Level Result %REC Limits RPD Limit Notes
LCS (P8F0172-BS1)
Prepared & Analyzed: 06/08/18
Benzene
0.0460
0.0050
mg/kg wet
0.05000
92
74-123
Bromobenzene
0.0370
0.0050
mg/kg wet
0.05000
74
66-122
Bromochloromethane
0.0437
0.0050
mg/kg wet
0.05000
87
73-128
Bromodichloromethane
0.0452
0.0050
mg/kg wet
0.05000
90
76-123
Bromoform
0.0423
0.0050
mg/kg wet
0.05000
85
71-124
Bromomethane
0.0460
0.010
mg/kg wet
0.05000
92
56-145
Carbon Tetrachloride
0.0447
0.0050
mg/kg wet
0.05000
89
67-140
Chlorobenzene
0.0378
0.0050
mg/kg wet
0.05000
76
74-121
Chloroethane
0.0557
0.010
mg/kg wet
0.05000
111
64-142
Chloroform
0.0436
0.0050
mg/kg wet
0.05000
87
75-125
Chloromethane
0.0358
0.010
mg/kg wet
0.05000
72
54-132
cis-1,2-Dichloroethylene
0.0447
0.0050
mg/kg wet
0.05000
89
68-132
cis-1,3-Dichloropropylene
0.0479
0.0050
mg/kg wet
0.05000
96
75-128
Dibromochloromethane
0.0401
0.0050
mg/kg wet
0.05000
80
71-121
Dichlorodifluoromethane
0.0395
0.010
mg/kg wet
0.05000
79
39-178
Ethylbenzene
0.0461
0.0050
mg/kg wet
0.05000
92
69-125
Isopropyl Ether
0.0446
0.0050
mg/kg wet
0.05000
89
77-123
Isopropylbenzene (Cumene)
0.0402
0.0050
mg/kg wet
0.05000
80
68-129
m,p-Xylenes
0.0857
0.010
mg/kg wet
0.1000
86
64-125
Methyl Butyl Ketone (2-Hexanone)
0.0447
0.020
mg/kg wet
0.05000
89
54-139
Methyl Ethyl Ketone (2-Butanone)
0.0453
0.020
mg/kg wet
0.05000
91
34-165
Methyl Isobutyl Ketone
0.0492
0.020
mg/kg wet
0.05000
98
63-130
Methylene Chloride
0.0418
0.0050
mg/kg wet
0.05000
84
65-135
Methyl-tert-Butyl Ether
0.0436
0.0050
mg/kg wet
0.05000
87
62-123
Naphthalene
0.0405
0.010
mg/kg wet
0.05000
81
58-129
n-Butylbenzene
0.0403
0.0050
mg/kg wet
0.05000
81
71-126
n-Propylbenzene
0.0389
0.0050
mg/kg wet
0.05000
78
68-128
o-Xylene
0.0434
0.0050
mg/kg wet
0.05000
87
69-121
sec-Butylbenzene
0.0396
0.0050
mg/kg wet
0.05000
79
71-128
Styrene
0.0430
0.0050
mg/kg wet
0.05000
86
67-129
tert-Butyl benzene
0.0390
0.0050
mg/kg wet
0.05000
78
71-126
Tetrachloroethylene
0.0423
0.0050
mg/kg wet
0.05000
85
71-124
Toluene
0.0459
0.0050
mg/kg wet
0.05000
92
74-122
trans- 1,2-Dichloroethylene
0.0446
0.0050
mg/kg wet
0.05000
89
69-129
trans- 1,3-Dichloropropylene
0.0472
0.0050
mg/kg wet
0.05000
94
74-127
Trichloroethylene
0.0445
0.0050
mg/kg wet
0.05000
89
68-133
Trichlorofluoromethane
0.0513
0.010
mg/kg wet
0.05000
103
60-138
Vinyl acetate
0.0563
0.020
mg/kg wet
0.05000
113
14-179
Vinyl chloride
0.0470
0.010
mg/kg wet
0.05000
94
69-135
Xylenes, total
0.129
0.015
mg/kg wet
0.1500
86
74-126
Surrogate:4-Bromofluorobenzene
48.7
ug/L
50.00
97
70-130
Surrogate: Dibromofluoromethane
49.6
ug/L
50.00
99
70-130
Surrogate: Toluene-d8
44.9
ug/L
50.00
90
70-130
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 15 of 21

P R I IS M Full -Service Analytical &
Environmental Solutions
LABORATORIES, INC.
Level II QC Report
6/12/18
NOVA Engineering & Environmental
Attn: Alex Robinson
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Volatile Organic Compounds by GC/MS (Medium Level) - Quality Control
Analyte
Batch P81F0172 - 5035
Prism Work Order: 8060126
Time Submitted: 6/7/2018 3:10:OOPM
Reporting Spike Source %REC RPD
Result Limit Units Level Result %REC Limits RPD Limit Notes
LCS Dup (P8F0172-BSD1)
Prepared & Analyzed: 06/08/18
1,1,1,2-Tetrachloroethane
0.0395
0.0050
mg/kg wet
0.05000
79
72-115
2 20
1,1,1-Trichloroethane
0.0412
0.0050
mg/kg wet
0.05000
82
72-123
5 20
1,1,2,2-Tetrachloroethane
0.0374
0.0050
mg/kg wet
0.05000
75
62-127
2 20
1,1,2-Trichloroethane
0.0394
0.0050
mg/kg wet
0.05000
79
73-123
0.9 20
1,1-Dichloroethane
0.0417
0.0050
mg/kg wet
0.05000
83
73-119
4 20
1,1-Dichloroethylene
0.0424
0.0050
mg/kg wet
0.05000
85
59-157
7 20
1, 1 -Dichloropropylene
0.0438
0.0050
mg/kg wet
0.05000
88
70-129
5 20
1,2,3-Trichlorobenzene
0.0358
0.010
mg/kg wet
0.05000
72
59-133
1 20
1,2,3-Trichloropropane
0.0366
0.0050
mg/kg wet
0.05000
73
52-137
2 20
1,2,4-Trichlorobenzene
0.0360
0.010
mg/kg wet
0.05000
72
66-123
2 20
1,2,4-Trimethylbenzene
0.0380
0.0050
mg/kg wet
0.05000
76
69-126
5 20
1,2-Dibromoethane
0.0400
0.0050
mg/kg wet
0.05000
80
69-127
2 20
1,2-Dichlorobenzene
0.0358
0.0050
mg/kg wet
0.05000
72
70-121
2 20
1,2-Dichloroethane
0.0445
0.0050
mg/kg wet
0.05000
89
69-125
0.9 20
1,2-Dichloropropane
0.0445
0.0050
mg/kg wet
0.05000
89
75-124
3 20
1,3,5-Trimethylbenzene
0.0374
0.0050
mg/kg wet
0.05000
75
69-124
4 20
1,3-Dichlorobenzene
0.0352
0.0050
mg/kg wet
0.05000
70
70-121
3 20
1,3-Dichloropropane
0.0410
0.0050
mg/kg wet
0.05000
82
70-124
0.7 20
1,4-Dichlorobenzene
0.0355
0.0050
mg/kg wet
0.05000
71
71-119
2 20
2,2-Dichloropropane
0.0416
0.0050
mg/kg wet
0.05000
83
46-154
5 20
2-Chlorotoluene
0.0360
0.0050
mg/kg wet
0.05000
72
70-121
4 20
4-Chlorotoluene
0.0367
0.0050
mg/kg wet
0.05000
73
72-126
4 20
4-Isopropyltoluene
0.0379
0.0050
mg/kg wet
0.05000
76
71-126
5 20
Acetone
0.0864
0.020
mg/kg wet
0.1000
86
12-196
0.9 20
Benzene
0.0440
0.0050
mg/kg wet
0.05000
88
74-123
4 20
Bromobenzene
0.0356
0.0050
mg/kg wet
0.05000
71
66-122
4 20
Bromochloromethane
0.0436
0.0050
mg/kg wet
0.05000
87
73-128
0.3 20
Bromodichloromethane
0.0445
0.0050
mg/kg wet
0.05000
89
76-123
2 20
Bromoform
0.0406
0.0050
mg/kg wet
0.05000
81
71-124
4 20
Bromomethane
0.0443
0.010
mg/kg wet
0.05000
89
56-145
4 20
Carbon Tetrachloride
0.0429
0.0050
mg/kg wet
0.05000
86
67-140
4 20
Chlorobenzene
0.0370
0.0050
mg/kg wet
0.05000
74
74-121
2 20
Chloroethane
0.0540
0.010
mg/kg wet
0.05000
108
64-142
3 20
Chloroform
0.0420
0.0050
mg/kg wet
0.05000
84
75-125
4 20
Chloromethane
0.0394
0.010
mg/kg wet
0.05000
79
54-132
10 20
cis-1,2-Dichloroethylene
0.0434
0.0050
mg/kg wet
0.05000
87
68-132
3 20
cis-1,3-Dichloropropylene
0.0466
0.0050
mg/kg wet
0.05000
93
75-128
3 20
Dibromochloromethane
0.0406
0.0050
mg/kg wet
0.05000
81
71-121
1 20
Dichlorodifluoromethane
0.0363
0.010
mg/kg wet
0.05000
73
39-178
8 20
Ethylbenzene
0.0442
0.0050
mg/kg wet
0.05000
88
69-125
4 20
Isopropyl Ether
0.0439
0.0050
mg/kg wet
0.05000
88
77-123
2 20
Isopropylbenzene (Cumene)
0.0378
0.0050
mg/kg wet
0.05000
76
68-129
6 20
m,p-Xylenes
0.0830
0.010
mg/kg wet
0.1000
83
64-125
3 20
Methyl Butyl Ketone (2-Hexanone)
0.0438
0.020
mg/kg wet
0.05000
88
54-139
2 20
Methyl Ethyl Ketone (2-Butanone)
0.0457
0.020
mg/kg wet
0.05000
91
34-165
0.8 20
Methyl Isobutyl Ketone
0.0481
0.020
mg/kg wet
0.05000
96
63-130
2 20
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 16 of 21

PRISM
R I S Full -Service Analytical s
Environmental Solutions
�- LABORATORIES, INC.
Level II QC Report
6/12/18
NOVA Engineering & Environmental Project: PreGel (Concord, NC)
Attn: Alex Robinson
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Volatile Organic Compounds by GC/MS (Medium Level) - Quality Control
Analyte
Batch P8FO172 - 5035
Reporting
Result Limit Units
Prism Work Order: 8060126
Time Submitted: 6/7/2018 3:10:OOPM
Spike Source %REC RPD
Level Result %REC Limits RPD Limit Notes
LCS Dup (P8F0172-BSD1)
Prepared & Analyzed: 06/08/18
Methylene Chloride
0.0407
0.0050
mg/kg wet
0.05000
81
65-135
3
20
Methyl-tert-Butyl Ether
0.0435
0.0050
mg/kg wet
0.05000
87
62-123
0.1
20
Naphthalene
0.0408
0.010
mg/kg wet
0.05000
82
58-129
0.7
20
n-Butylbenzene
0.0385
0.0050
mg/kg wet
0.05000
77
71-126
5
20
n-Propylbenzene
0.0369
0.0050
mg/kg wet
0.05000
74
68-128
5
20
o-Xylene
0.0419
0.0050
mg/kg wet
0.05000
84
69-121
3
20
sec-Butylbenzene
0.0378
0.0050
mg/kg wet
0.05000
76
71-128
5
20
Styrene
0.0423
0.0050
mg/kg wet
0.05000
85
67-129
2
20
tert-Butylbenzene
0.0373
0.0050
mg/kg wet
0.05000
75
71-126
5
20
Tetrachloroethylene
0.0401
0.0050
mg/kg wet
0.05000
80
71-124
5
20
Toluene
0.0441
0.0050
mg/kg wet
0.05000
88
74-122
4
20
trans-1,2-Dichloroethylene
0.0421
0.0050
mg/kg wet
0.05000
84
69-129
6
20
trans- 1,3-Dichloropropylene
0.0470
0.0050
mg/kg wet
0.05000
94
74-127
0.3
20
Trichloroethylene
0.0423
0.0050
mg/kg wet
0.05000
85
68-133
5
20
Trichlorofluoromethane
0.0476
0.010
mg/kg wet
0.05000
95
60-138
7
20
Vinyl acetate
0.0564
0.020
mg/kg wet
0.05000
113
14-179
0.2
20
Vinyl chloride
0.0446
0.010
mg/kg wet
0.05000
89
69-135
5
20
Xylenes, total
0.125
0.015
mg/kg wet
0.1500
83
74-126
3
200
Surrogate:4-Bromofluorobenzene
48.1
ug/L
50.00
96
70-130
Surrogate: Dibromofluoromethane
49.5
ug/L
50.00
99
70-130
Surrogate: Toluene-d8
45.3
ug/L
50.00
91
70-130
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 17 of 21

PRISM
R I S Full -Service Analytical s
Environmental Solutions
�- LABORATORIES, INC.
Level II QC Report
6/12/18
NOVA Engineering & Environmental Project: PreGel (Concord, NC)
Attn: Alex Robinson
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Gasoline Range Organics by GC/FID - Quality Control
Prism Work Order: 8060126
Time Submitted: 6/7/2018 3:10:OOPM
Reporting Spike Source %REC RPD
Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes
Batch P8FO131 - 5035
Blank (P8F0131-BLK1)
Prepared & Analyzed: 06/08/18
Gasoline Range Organics
BRL
5.0 mg/kg wet
Surrogate: a,a,a-Trifluorotoluene
5.20
mg/kg
5.000 104
50-137
LCS (P8F0131-BS1)
Prepared & Analyzed: 06/08/18
Gasoline Range Organics
42.8
5.0 mg/kg wet
50.00 86
41-138
Surrogate: a,a,a-Trifluorotoluene
5.05
mg/kg
5.000 101
50-137
LCS Dup (P8F0131-BSD1)
Prepared & Analyzed: 06/08/18
Gasoline Range Organics
49.7
5.0 mg/kg wet
50.00 99
41-138 15 20
Surrogate: a,a,a-Trifluorotoluene
5.75
mg/kg
5.000 115
50-137
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 18 of 21

PRISM
R I S Full -Service Analytical s
Environmental Solutions
�- LABORATORIES, INC.
Level II QC Report
6/12/18
NOVA Engineering & Environmental Project: PreGel (Concord, NC)
Attn: Alex Robinson
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Diesel Range Organics by GC/FID - Quality Control
Prism Work Order: 8060126
Time Submitted: 6/7/2018 3:10:OOPM
Reporting Spike Source %REC RPD
Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes
Batch P8FO125 - 3546
Blank (P8F0125-BLK1)
Prepared: 06/07/18 Analyzed: 06/08/18
Diesel Range Organics
BRL
7.0 mg/kg wet
Surrogate: o-Terphenyl
1.08
mg/kg wet
1.333 81 49-124
LCS (P8F0125-BS1)
Prepared: 06/07/18 Analyzed: 06/08/18
Diesel Range Organics
60.1
7.0 mg/kg wet
66.67 90 55-109
Surrogate: o-Terphenyl
0.997
mg/kg wet
1.333 75 49-124
LCS Dup (P8F0125-BSD1)
Prepared: 06/07/18 Analyzed: 06/08/18
Diesel Range Organics
70.4
7.0 mg/kg wet
66.67 106 55-109 16 20
Surrogate: o-Terphenyl
1.22
mg/kg wet
1.333 92 49-124
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 19 of 21

Level II QC Report
Full -Service Analytical & 6/12/18
Environmental Solutions
�- LABORATORIES, INC.
NOVA Engineering & Environmental Project: PreGel (Concord, NC) Prism Work Order: 8060126
Attn: Alex Robinson Time Submitted: 6/7/2018 3:10:OOPM
5104 Reagan Drive Suite 8
Charlotte, NC 28206
General Chemistry Parameters - Quality Control
Reporting Spike Source %REC RPD
Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes
Batch P8FO133 - Solids, Dry Weight
Duplicate (P8F0133-DUP1)
Source: 8060126-02 Prepared & Analyzed: 06/07/18
% Solids
80.6
0.100 % by Weight
79.0 2 20
Sample Extraction Data
Prep Method: 3546
Lab Number Batch
Initial
Final
Date/Time
8060126-01 P8F0125
30.01 g
1 mL
06/07/18 16:30
8060126-02 P81`0125
30.11 g
1 mL
06/07/18 16:30
Prep Method: 5035
Lab Number Batch
Initial
Final
Date/Time
8060126-01 P8F0131
4.99 g
5 mL
06/08/18 9:13
8060126-02 P81`0131
5.03 g
5 mL
06/08/18 9:13
Prep Method: Solids, Dry Weight
Lab Number Batch
Initial
Final
Date/Time
8060126-01 P8F0133
30 g
30 g
06/07/18 15:30
8060126-02 P8F0133
30 g
30 g
06/07/18 15:30
Prep Method: 5035
Lab Number Batch
Initial
Final
Date/Time
8060126-01 P8F0154
4.87 g
5 mL
06/08/18 7:58
Prep Method: 5035
Lab Number Batch
Initial
Final
DatelTime
8060126-02 P81`0172
4.95 g
5 mL
06/08/18 8:03
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 20 of 21

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kl-�Paae 21 of 21

Case Narrative
PRISM Full -Service Analytical &
Environmental Solutions
`,. LABORATORIES, INC.
NOVA Engineering & Environmental
David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
NC Certification No. 402
NC Drinking Water Cent No. 37735
SC Certification No. 99012
Project: PreGel (Concord, NC)
Lab Submittal Date: 07/23/2018
Prism Work Order: 8070314
07/26/2018
This data package contains the analytical results for the project identified above and includes a Case Narrative, Sample
Results and Chain of Custody. Unless otherwise noted, all samples were received in acceptable condition and processed
according to the referenced methods.
Data qualifiers are flagged individually on each sample. A key reference for the data qualifiers appears at the end of this case
narrative.
Please call if you have any questions relating to this analytical report.
Respectfully,
PRISM LABORATORIES, INC.
a,j
Angela D. Overcash
VP Laboratory Services
Data Qualifiers Key Reference:
Reviewed By Robbi A. Jones For Angela D. Overcash
President/Project Manager
D RPD value outside of the control limits.
J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag).
BRL Below Reporting Limit
MDL Method Detection Limit
RPD Relative Percent Difference
* Results reported to the reporting limit. All other results are reported to the MDL with values between MDL and
reporting limit indicated with a J.
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 1 of 17

PRISMSample
LABORATORIES INC.
Full -Service Analytical R
Environmental Solutions
Receipt Summary
07/26/2018
Prism Work Order: 8070314
Client Sample ID
Lab Sample ID
Matrix
Date/Time Sampled Date/Time Received
A
8070314-01
Solid
07/23/18 10:47 07/23/18 12:23
B
8070314-02
Solid
07/23/18 11:04 07/23/18 12:23
C
8070314-03
Solid
07/23/18 11:15 07/23/18 12:23
Samples were received in good condition at 5.2 degrees C unless otherwise noted.
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 2 of 17

Summary of Detections
Full -Service Analytical &
�P R I S M
Environmental Solutions
07/26/2018
LABORATORIES, INC.
Prism Work Order: 8070314
Prism ID Client ID
Parameter
Method Result Units
8070314-01 A
C9-Cl8 Aliphatics
MADEP EPH 0.36 J mg/kg dry
8070314-01 A
Pyrene
8270D 0.11 J mg/kg dry
8070314-03 C
C9-Cl8 Aliphatics
MADEP EPH 0.66 J mg/kg dry
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 3 of 17

PR I S M Full -Service Analytical Environmental Solutions
LABORATORIES INC.
Laboratory Report
07/26/2018
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Client Sample ID: A
Prism Sample ID: 8070314-01
Prism Work Order: 8070314
Time Collected: 07/23/18 10:47
Time Submitted: 07/23/18 12:23
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor Date/Time ID
Extractable Petroleum Hydrocarbons by GC/FID
C9-C18 Aliphatics 0.36 J
mg/kg dry 32 0.21 1 MADEP EPH 7/25/18 20:39 ZRC P8G0375
C19-C36 Aliphatics BRL
mg/kg dry 32 3.8 1 MADEP EPH 7/25/18 20:39 ZRC P8G0375
C1 1 -C22 Aromatics BRL
mg/kg dry 13 2.3 1 MADEP EPH 7/25/18 20:39 ZRC P8G0375
Surrogate Recovery Control Limits
1-Chlorooctadecane
75 %
40-140
o-Terphenyl
82 %
40-140
2-Fluorobiphenyl
89 %
40-140
2-Bromonaphthalene
101 %
40-140
General Chemistry Parameters
% Solids
77.3
% by
0.100
0.100
1
'SM2540 G
7/25/18 13:30
TJY
P8G0419
Weight
Semivolatile Organic Compounds by GC/MS
1,2,4-Trichlorobenzene
BRL
mg/kg dry
0.43
0.066
1
8270D
7/25/18 14:59
JMV
P8G0338
1,2-Dichlorobenzene
BRL
mg/kg dry
0.43
0.065
1
8270D
7/25/18 14:59
JMV
P8G0338
1,3-Dichlorobenzene
BRL
mg/kg dry
0.43
0.060
1
8270D
7/25/18 14:59
JMV
P8G0338
1,4-Dichlorobenzene
BRL
mg/kg dry
0.43
0.062
1
8270D
7/25/18 14:59
JMV
P8G0338
1-Methyl naphthalene
BRL
mg/kg dry
0.43
0.082
1
8270D
7/25/18 14:59
JMV
P8G0338
2,4,6-Trichlorophenol
BRL
mg/kg dry
0.43
0.080
1
8270D
7/25/18 14:59
JMV
P8G0338
2,4-Dichlorophenol
BRL
mg/kg dry
0.43
0.082
1
8270D
7/25/18 14:59
JMV
P8G0338
2,4-Dimethylphenol
BRL
mg/kg dry
0.43
0.065
1
8270D
7/25/18 14:59
JMV
P8G0338
2,4-Dinitrophenol
BRL
mg/kg dry
0.43
0.060
1
8270D
7/25/18 14:59
JMV
P8G0338
2,4-Dinitrotoluene
BRL
mg/kg dry
0.43
0.052
1
8270D
7/25/18 14:59
JMV
P8G0338
2,6-Dinitrotoluene
BRL
mg/kg dry
0.43
0.057
1
8270D
7/25/18 14:59
JMV
P8G0338
2-Chloronaphthalene
BRL
mg/kg dry
0.43
0.062
1
8270D
7/25/18 14:59
JMV
P8G0338
2-Chlorophenol
BRL
mg/kg dry
0.43
0.060
1
8270D
7/25/18 14:59
JMV
P8G0338
2-Methyl naphthalene
BRL
mg/kg dry
0.43
0.068
1
8270D
7/25/18 14:59
JMV
P8G0338
2-Methylphenol
BRL
mg/kg dry
0.43
0.055
1
8270D
7/25/18 14:59
JMV
P8G0338
2-Nitrophenol
BRL
mg/kg dry
0.43
0.078
1
8270D
7/25/18 14:59
JMV
P8G0338
3,3'-Dichlorobenzidine
BRL
mg/kg dry
0.43
0.084
1
8270D
7/25/18 14:59
JMV
P8G0338
3/4-Methyl phenol
BRL
mg/kg dry
0.43
0.053
1
8270D
7/25/18 14:59
JMV
P8G0338
4,6-Dinitro-2-methylphenol
BRL
mg/kg dry
0.43
0.064
1
8270D
7/25/18 14:59
JMV
P8G0338
4-Bromophenyl phenyl ether
BRL
mg/kg dry
0.43
0.073
1
8270D
7/25/18 14:59
JMV
P8G0338
4-Chloro-3-methylphenol
BRL
mg/kg dry
0.43
0.060
1
8270D
7/25/18 14:59
JMV
P8G0338
4-Chloroaniline
BRL
mg/kg dry
0.43
0.051
1
8270D
7/25/18 14:59
JMV
P8G0338
4-Chlorophenyl phenyl ether
BRL
mg/kg dry
0.43
0.055
1
8270D
7/25/18 14:59
JMV
P8G0338
4-Nitrophenol
BRL
mg/kg dry
0.43
0.066
1
8270D
7/25/18 14:59
JMV
P8G0338
Acenaphthene
BRL
mg/kg dry
0.43
0.058
1
8270D
7/25/18 14:59
JMV
P8G0338
Acenaphthylene
BRL
mg/kg dry
0.43
0.062
1
8270D
7/25/18 14:59
JMV
P8G0338
Anthracene
BRL
mg/kg dry
0.43
0.069
1
8270D
7/25/18 14:59
JMV
P8G0338
Azobenzene
BRL
mg/kg dry
0.43
0.056
1
8270D
7/25/18 14:59
JMV
P8G0338
Benzo(a)anthracene
BRL
mg/kg dry
0.43
0.056
1
8270D
7/25/18 14:59
JMV
P8G0338
Benzo(a)pyrene
BRL
mg/kg dry
0.43
0.046
1
8270D
7/25/18 14:59
JMV
P8G0338
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 4 of 17

Laboratory Report
` Full -Service Analytical &
P R S M
/ environmental Solutions
LABORATORIES INC.
07/26/2018
NOVA Engineering & Environmental
Project: PreGel (Concord, NC)
Client Sample ID: A
Attn: David Penalva
Prism Sample ID: 8070314-01
5104 Reagan Drive Suite 8
Prism Work Order:
8070314
Charlotte, NC 28206
Sample Matrix: Solid
Time Collected:
07/23/18 10:47
Time Submitted:
07/23/18 12:23
Parameter
Result
Units
Report
MDL
Dilution
Method
Analysis Analyst
Batch
Limit
Factor
Date/Time
ID
Benzo(b)fluoranthene
BRL
mg/kg dry
0.43
0.049
1
8270D
7/25/18 14:59
JMV
P8G0338
Benzo(g,h,i)perylene
BRL
mg/kg dry
0.43
0.047
1
8270D
7/25/18 14:59
JMV
P8G0338
Benzo(k)fluoranthene
BRL
mg/kg dry
0.43
0.056
1
8270D
7/25/18 14:59
JMV
P8G0338
Benzoic Acid
BRL
mg/kg dry
0.43
0.036
1
8270D
7/25/18 14:59
JMV
P8G0338
Benzyl alcohol
BRL
mg/kg dry
0.43
0.056
1
8270D
7/25/18 14:59
JMV
P8G0338
bis(2-Chloroethoxy)methane
BRL
mg/kg dry
0.43
0.074
1
8270D
7/25/18 14:59
JMV
P8G0338
Bis(2-Chloroethyl)ether
BRL
mg/kg dry
0.43
0.060
1
8270D
7/25/18 14:59
JMV
P8G0338
Bis(2-chloroisopropyl)ether
BRL
mg/kg dry
0.43
0.073
1
8270D
7/25/18 14:59
JMV
P8G0338
Bis(2-Ethylhexyl)phthalate
BRL
mg/kg dry
0.43
0.063
1
8270D
7/25/18 14:59
JMV
P8G0338
Butyl benzyl phthalate
BRL
mg/kg dry
0.43
0.061
1
8270D
7/25/18 14:59
JMV
P8G0338
Chrysene
BRL
mg/kg dry
0.43
0.054
1
8270D
7/25/18 14:59
JMV
P8G0338
Dibenzo(a,h)anthracene
BRL
mg/kg dry
0.43
0.052
1
8270D
7/25/18 14:59
JMV
P8G0338
Dibenzofuran
BRL
mg/kg dry
0.43
0.065
1
8270D
7/25/18 14:59
JMV
P8G0338
Diethyl phthalate
BRL
mg/kg dry
0.43
0.059
1
8270D
7/25/18 14:59
JMV
P8G0338
Dimethyl phthalate
BRL
mg/kg dry
0.43
0.056
1
8270D
7/25/18 14:59
JMV
P8G0338
Di-n-butyl phthalate
BRL
mg/kg dry
0.43
0.061
1
8270D
7/25/18 14:59
JMV
P8G0338
Di-n-octyl phthalate
BRL
mg/kg dry
0.43
0.052
1
8270D
7/25/18 14:59
JMV
P8G0338
Fluoranthene
BRL
mg/kg dry
0.43
0.054
1
8270D
7/25/18 14:59
JMV
P8G0338
Fluorene
BRL
mg/kg dry
0.43
0.061
1
8270D
7/25/18 14:59
JMV
P8G0338
Hexachlorobenzene
BRL
mg/kg dry
0.43
0.068
1
8270D
7/25/18 14:59
JMV
P8G0338
Hexachlorobutadiene
BRL
mg/kg dry
0.43
0.077
1
8270D
7/25/18 14:59
JMV
P8G0338
Hexachlorocyclopentadiene
BRL
mg/kg dry
0.43
0.076
1
8270D
7/25/18 14:59
JMV
P8G0338
Hexachloroethane
BRL
mg/kg dry
0.43
0.071
1
8270D
7/25/18 14:59
JMV
P8G0338
Indeno(1,2,3-cd)pyrene
BRL
mg/kg dry
0.43
0.049
1
8270D
7/25/18 14:59
JMV
P8G0338
Isophorone
BRL
mg/kg dry
0.43
0.058
1
8270D
7/25/18 14:59
JMV
P8G0338
Naphthalene
BRL
mg/kg dry
0.43
0.069
1
8270D
7/25/18 14:59
JMV
P8G0338
Nitrobenzene
BRL
mg/kg dry
0.43
0.061
1
8270D
7/25/18 14:59
JMV
P8G0338
N-Nitroso-di-n-propylamine
BRL
mg/kg dry
0.43
0.067
1
8270D
7/25/18 14:59
JMV
P8G0338
N-Nitrosodiphenylamine
BRL
mg/kg dry
0.43
0.065
1
8270D
7/25/18 14:59
JMV
P8G0338
Pentachlorophenol
BRL
mg/kg dry
0.43
0.050
1
8270D
7/25/18 14:59
JMV
P8G0338
Phenanthrene
BRL
mg/kg dry
0.43
0.055
1
8270D
7/25/18 14:59
JMV
P8G0338
Phenol
BRL
mg/kg dry
0.43
0.063
1
8270D
7/25/18 14:59
JMV
P8G0338
Pyrene
0.11
J mg/kg dry
0.43
0.056
1
8270D
7/25/18 14:59
JMV
P8G0338
Surrogate
Recovery
Control Limits
2,4,6-Tribromophenol
82 %
39-132
2-Fluorobiphenyl
71 %
44-115
2-Fluorophenol
74 %
35-115
Nitrobenzene-d5
60 %
37-122
Phenol-d5
70 %
34-121
Terphenyl-d14
88 %
54-127
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 5 of 17

PR I S M Full -Service Analytical Environmental Solutions
LABORATORIES INC.
Laboratory Report
07/26/2018
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Client Sample ID: B
Prism Sample ID: 8070314-02
Prism Work Order: 8070314
Time Collected: 07/23/18 11:04
Time Submitted: 07/23/18 12:23
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor Date/Time ID
Extractable Petroleum Hydrocarbons by GC/FID
C9-C18 Aliphatics BRL
mg/kg dry
33 0.21 1
MADEP EPH 7/25/18 21:15
ZRC P8G0375
C19-C36 Aliphatics BRL
mg/kg dry
33 3.9 1
MADEP EPH 7/25/18 21:15
ZRC P8G0375
C11-C22 Aromatics BRL
mg/kg dry
13 2.4 1
MADEP EPH 7/25/18 21:15
ZRC P8G0375
Surrogate
Recovery
Control Limits
1-Chlorooctadecane
72 %
40-140
o-Terphenyl
76 %
40-140
2-Fluorobiphenyl
92 %
40-140
2-Bromonaphthalene
108 %
40-140
General Chemistry Parameters
% Solids 74.7
Semivolatile Organic Compounds by GC/MS
% by
Weight
0.100
0.100
1
"SM2540 G
7/25/18 13:30
TJY
P8G0419
1,2,4-Trichlorobenzene
BRL
mg/kg dry
0.44
0.069
1
8270D
7/25/18 15:22
JMV
P8G0338
1,2-Dichlorobenzene
BRL
mg/kg dry
0.44
0.067
1
8270D
7/25/18 15:22
JMV
P8G0338
1,3-Dichlorobenzene
BRL
mg/kg dry
0.44
0.062
1
8270D
7/25/18 15:22
JMV
P8G0338
1,4-Dichlorobenzene
BRL
mg/kg dry
0.44
0.064
1
8270D
7/25/18 15:22
JMV
P8G0338
1-Methyl naphthalene
BRL
mg/kg dry
0.44
0.085
1
8270D
7/25/18 15:22
JMV
P8G0338
2,4,6-Trichlorophenol
BRL
mg/kg dry
0.44
0.083
1
8270D
7/25/18 15:22
JMV
P8G0338
2,4-Dichlorophenol
BRL
mg/kg dry
0.44
0.085
1
8270D
7/25/18 15:22
JMV
P8G0338
2,4-Dimethylphenol
BRL
mg/kg dry
0.44
0.067
1
8270D
7/25/18 15:22
JMV
P8G0338
2,4-Dinitrophenol
BRL
mg/kg dry
0.44
0.061
1
8270D
7/25/18 15:22
JMV
P8G0338
2,4-Dinitrotoluene
BRL
mg/kg dry
0.44
0.053
1
8270D
7/25/18 15:22
JMV
P8G0338
2,6-Dinitrotoluene
BRL
mg/kg dry
0.44
0.059
1
8270D
7/25/18 15:22
JMV
P8G0338
2-Chloronaphthalene
BRL
mg/kg dry
0.44
0.064
1
8270D
7/25/18 15:22
JMV
P8G0338
2-Chlorophenol
BRL
mg/kg dry
0.44
0.062
1
8270D
7/25/18 15:22
JMV
P8G0338
2-Methyl naphthalene
BRL
mg/kg dry
0.44
0.070
1
8270D
7/25/18 15:22
JMV
P8G0338
2-Methylphenol
BRL
mg/kg dry
0.44
0.056
1
8270D
7/25/18 15:22
JMV
P8G0338
2-Nitrophenol
BRL
mg/kg dry
0.44
0.080
1
8270D
7/25/18 15:22
JMV
P8G0338
3,3'-Dichlorobenzidine
BRL
mg/kg dry
0.44
0.087
1
8270D
7/25/18 15:22
JMV
P8G0338
3/4-Methyl phenol
BRL
mg/kg dry
0.44
0.054
1
8270D
7/25/18 15:22
JMV
P8G0338
4,6-Dinitro-2-methylphenol
BRL
mg/kg dry
0.44
0.066
1
8270D
7/25/18 15:22
JMV
P8G0338
4-Bromophenyl phenyl ether
BRL
mg/kg dry
0.44
0.076
1
8270D
7/25/18 15:22
JMV
P8G0338
4-Chloro-3-methylphenol
BRL
mg/kg dry
0.44
0.062
1
8270D
7/25/18 15:22
JMV
P8G0338
4-Chloroaniline
BRL
mg/kg dry
0.44
0.053
1
8270D
7/25/18 15:22
JMV
P8G0338
4-Chlorophenyl phenyl ether
BRL
mg/kg dry
0.44
0.057
1
8270D
7/25/18 15:22
JMV
P8G0338
4-Nitrophenol
BRL
mg/kg dry
0.44
0.068
1
8270D
7/25/18 15:22
JMV
P8G0338
Acenaphthene
BRL
mg/kg dry
0.44
0.060
1
8270D
7/25/18 15:22
JMV
P8G0338
Acenaphthylene
BRL
mg/kg dry
0.44
0.064
1
8270D
7/25/18 15:22
JMV
P8G0338
Anthracene
BRL
mg/kg dry
0.44
0.071
1
8270D
7/25/18 15:22
JMV
P8G0338
Azobenzene
BRL
mg/kg dry
0.44
0.058
1
8270D
7/25/18 15:22
JMV
P8G0338
Benzo(a)anthracene
BRL
mg/kg dry
0.44
0.058
1
8270D
7/25/18 15:22
JMV
P8G0338
Benzo(a)pyrene
BRL
mg/kg dry
0.44
0.048
1
8270D
7/25/18 15:22
JMV
P8G0338
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 6 of 17

` Full -Service Analytical &
/ environmental Solutions
P R S M
LABORATORIES INC.
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Laboratory Report
07/26/2018
Client Sample ID: B
Prism Sample ID: 8070314-02
Prism Work Order: 8070314
Time Collected: 07/23/18 11:04
Time Submitted: 07/23/18 12:23
Parameter
Result
Units
Report
MDL
Dilution
Method
Analysis Analyst
Batch
Limit
Factor
Date/Time
ID
Benzo(b)fluoranthene
BRL
mg/kg dry
0.44
0.051
1
8270D
7/25/18 15:22
JMV
P8G0338
Benzo(g,h,i)perylene
BRL
mg/kg dry
0.44
0.048
1
8270D
7/25/18 15:22
JMV
P8G0338
Benzo(k)fluoranthene
BRL
mg/kg dry
0.44
0.058
1
8270D
7/25/18 15:22
JMV
P8G0338
Benzoic Acid
BRL
mg/kg dry
0.44
0.037
1
8270D
7/25/18 15:22
JMV
P8G0338
Benzyl alcohol
BRL
mg/kg dry
0.44
0.058
1
8270D
7/25/18 15:22
JMV
P8G0338
bis(2-Chloroethoxy)methane
BRL
mg/kg dry
0.44
0.076
1
8270D
7/25/18 15:22
JMV
P8G0338
Bis(2-Chloroethyl)ether
BRL
mg/kg dry
0.44
0.062
1
8270D
7/25/18 15:22
JMV
P8G0338
Bis(2-chloroisopropyl)ether
BRL
mg/kg dry
0.44
0.075
1
8270D
7/25/18 15:22
JMV
P8G0338
Bis(2-Ethylhexyl)phthalate
BRL
mg/kg dry
0.44
0.065
1
8270D
7/25/18 15:22
JMV
P8G0338
Butyl benzyl phthalate
BRL
mg/kg dry
0.44
0.063
1
8270D
7/25/18 15:22
JMV
P8G0338
Chrysene
BRL
mg/kg dry
0.44
0.055
1
8270D
7/25/18 15:22
JMV
P8G0338
Dibenzo(a,h)anthracene
BRL
mg/kg dry
0.44
0.054
1
8270D
7/25/18 15:22
JMV
P8G0338
Dibenzofuran
BRL
mg/kg dry
0.44
0.067
1
8270D
7/25/18 15:22
JMV
P8G0338
Diethyl phthalate
BRL
mg/kg dry
0.44
0.061
1
8270D
7/25/18 15:22
JMV
P8G0338
Dimethyl phthalate
BRL
mg/kg dry
0.44
0.058
1
8270D
7/25/18 15:22
JMV
P8G0338
Di-n-butyl phthalate
BRL
mg/kg dry
0.44
0.063
1
8270D
7/25/18 15:22
JMV
P8G0338
Di-n-octyl phthalate
BRL
mg/kg dry
0.44
0.054
1
8270D
7/25/18 15:22
JMV
P8G0338
Fluoranthene
BRL
mg/kg dry
0.44
0.056
1
8270D
7/25/18 15:22
JMV
P8G0338
Fluorene
BRL
mg/kg dry
0.44
0.063
1
8270D
7/25/18 15:22
JMV
P8G0338
Hexachlorobenzene
BRL
mg/kg dry
0.44
0.070
1
8270D
7/25/18 15:22
JMV
P8G0338
Hexachlorobutadiene
BRL
mg/kg dry
0.44
0.079
1
8270D
7/25/18 15:22
JMV
P8G0338
Hexachlorocyclopentadiene
BRL
mg/kg dry
0.44
0.079
1
8270D
7/25/18 15:22
JMV
P8G0338
Hexachloroethane
BRL
mg/kg dry
0.44
0.074
1
8270D
7/25/18 15:22
JMV
P8G0338
Indeno(1,2,3-cd)pyrene
BRL
mg/kg dry
0.44
0.051
1
8270D
7/25/18 15:22
JMV
P8G0338
Isophorone
BRL
mg/kg dry
0.44
0.060
1
8270D
7/25/18 15:22
JMV
P8G0338
Naphthalene
BRL
mg/kg dry
0.44
0.071
1
8270D
7/25/18 15:22
JMV
P8G0338
Nitrobenzene
BRL
mg/kg dry
0.44
0.063
1
8270D
7/25/18 15:22
JMV
P8G0338
N-Nitroso-di-n-propylamine
BRL
mg/kg dry
0.44
0.069
1
8270D
7/25/18 15:22
JMV
P8G0338
N-Nitrosodiphenylamine
BRL
mg/kg dry
0.44
0.067
1
8270D
7/25/18 15:22
JMV
P8G0338
Pentachlorophenol
BRL
mg/kg dry
0.44
0.052
1
8270D
7/25/18 15:22
JMV
P8G0338
Phenanthrene
BRL
mg/kg dry
0.44
0.057
1
8270D
7/25/18 15:22
JMV
P8G0338
Phenol
BRL
mg/kg dry
0.44
0.065
1
8270D
7/25/18 15:22
JMV
P8G0338
Pyrene
BRL
mg/kg dry
0.44
0.058
1
8270D
7/25/18 15:22
JMV
P8G0338
Surrogate
Recovery
Control Limits
2,4,6-Tribromophenol
81 %
39-132
2-Fluorobiphenyl
73 %
44-115
2-Fluorophenol
71 %
35-115
Nitrobenzene-d5
61 %
37-122
Phenol-d5
66 %
34-121
Terphenyl-d14
77 %
54-127
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 7 of 17

PR I S M Full -Service Analytical Environmental Solutions
LABORATORIES INC.
Laboratory Report
07/26/2018
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Client Sample ID: C
Prism Sample ID: 8070314-03
Prism Work Order: 8070314
Time Collected: 07/23/18 11:15
Time Submitted: 07/23/18 12:23
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor Date/Time ID
Extractable Petroleum Hydrocarbons by GC/FID
C9-C18 Aliphatics 0.66 J
mg/kg dry 32 0.20 1 MADEP EPH 7/25/18 21:52 ZRC P8G0375
C19-C36 Aliphatics BRL
mg/kg dry 32 3.8 1 MADEP EPH 7/25/18 21:52 ZRC P8G0375
C1 1 -C22 Aromatics BRL
mg/kg dry 13 2.3 1 MADEP EPH 7/25/18 21:52 ZRC P8G0375
Surrogate Recovery Control Limits
1-Chlorooctadecane
72 %
40-140
o-Terphenyl
83 %
40-140
2-Fluorobiphenyl
89 %
40-140
2-Bromonaphthalene
104 %
40-140
General Chemistry Parameters
% Solids
78.0
% by
0.100
0.100
1
'SM2540 G
7/25/18 13:30
TJY
P8G0419
Weight
Semivolatile Organic Compounds by GC/MS
1,2,4-Trichlorobenzene
BRL
mg/kg dry
0.42
0.066
1
8270D
7/25/18 15:44
JMV
P8G0338
1,2-Dichlorobenzene
BRL
mg/kg dry
0.42
0.064
1
8270D
7/25/18 15:44
JMV
P8G0338
1,3-Dichlorobenzene
BRL
mg/kg dry
0.42
0.060
1
8270D
7/25/18 15:44
JMV
P8G0338
1,4-Dichlorobenzene
BRL
mg/kg dry
0.42
0.062
1
8270D
7/25/18 15:44
JMV
P8G0338
1-Methyl naphthalene
BRL
mg/kg dry
0.42
0.081
1
8270D
7/25/18 15:44
JMV
P8G0338
2,4,6-Trichlorophenol
BRL
mg/kg dry
0.42
0.079
1
8270D
7/25/18 15:44
JMV
P8G0338
2,4-Dichlorophenol
BRL
mg/kg dry
0.42
0.082
1
8270D
7/25/18 15:44
JMV
P8G0338
2,4-Dimethylphenol
BRL
mg/kg dry
0.42
0.065
1
8270D
7/25/18 15:44
JMV
P8G0338
2,4-Dinitrophenol
BRL
mg/kg dry
0.42
0.059
1
8270D
7/25/18 15:44
JMV
P8G0338
2,4-Dinitrotoluene
BRL
mg/kg dry
0.42
0.051
1
8270D
7/25/18 15:44
JMV
P8G0338
2,6-Dinitrotoluene
BRL
mg/kg dry
0.42
0.056
1
8270D
7/25/18 15:44
JMV
P8G0338
2-Chloronaphthalene
BRL
mg/kg dry
0.42
0.061
1
8270D
7/25/18 15:44
JMV
P8G0338
2-Chlorophenol
BRL
mg/kg dry
0.42
0.060
1
8270D
7/25/18 15:44
JMV
P8G0338
2-Methyl naphthalene
BRL
mg/kg dry
0.42
0.068
1
8270D
7/25/18 15:44
JMV
P8G0338
2-Methylphenol
BRL
mg/kg dry
0.42
0.054
1
8270D
7/25/18 15:44
JMV
P8G0338
2-Nitrophenol
BRL
mg/kg dry
0.42
0.077
1
8270D
7/25/18 15:44
JMV
P8G0338
3,3'-Dichlorobenzidine
BRL
mg/kg dry
0.42
0.084
1
8270D
7/25/18 15:44
JMV
P8G0338
3/4-Methyl phenol
BRL
mg/kg dry
0.42
0.052
1
8270D
7/25/18 15:44
JMV
P8G0338
4,6-Dinitro-2-methylphenol
BRL
mg/kg dry
0.42
0.064
1
8270D
7/25/18 15:44
JMV
P8G0338
4-Bromophenyl phenyl ether
BRL
mg/kg dry
0.42
0.073
1
8270D
7/25/18 15:44
JMV
P8G0338
4-Chloro-3-methylphenol
BRL
mg/kg dry
0.42
0.059
1
8270D
7/25/18 15:44
JMV
P8G0338
4-Chloroaniline
BRL
mg/kg dry
0.42
0.051
1
8270D
7/25/18 15:44
JMV
P8G0338
4-Chlorophenyl phenyl ether
BRL
mg/kg dry
0.42
0.055
1
8270D
7/25/18 15:44
JMV
P8G0338
4-Nitrophenol
BRL
mg/kg dry
0.42
0.065
1
8270D
7/25/18 15:44
JMV
P8G0338
Acenaphthene
BRL
mg/kg dry
0.42
0.058
1
8270D
7/25/18 15:44
JMV
P8G0338
Acenaphthylene
BRL
mg/kg dry
0.42
0.061
1
8270D
7/25/18 15:44
JMV
P8G0338
Anthracene
BRL
mg/kg dry
0.42
0.068
1
8270D
7/25/18 15:44
JMV
P8G0338
Azobenzene
BRL
mg/kg dry
0.42
0.056
1
8270D
7/25/18 15:44
JMV
P8G0338
Benzo(a)anthracene
BRL
mg/kg dry
0.42
0.055
1
8270D
7/25/18 15:44
JMV
P8G0338
Benzo(a)pyrene
BRL
mg/kg dry
0.42
0.046
1
8270D
7/25/18 15:44
JMV
P8G0338
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 8 of 17

` Full -Service Analytical &
/ environmental Solutions
P R S M
LABORATORIES INC.
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Laboratory Report
07/26/2018
Client Sample ID: C
Prism Sample ID: 8070314-03
Prism Work Order: 8070314
Time Collected: 07/23/18 11:15
Time Submitted: 07/23/18 12:23
Parameter
Result
Units
Report
MDL
Dilution
Method
Analysis Analyst
Batch
Limit
Factor
Date/Time
ID
Benzo(b)fluoranthene
BRL
mg/kg dry
0.42
0.049
1
8270D
7/25/18 15:44
JMV
P8G0338
Benzo(g,h,i)perylene
BRL
mg/kg dry
0.42
0.046
1
8270D
7/25/18 15:44
JMV
P8G0338
Benzo(k)fluoranthene
BRL
mg/kg dry
0.42
0.055
1
8270D
7/25/18 15:44
JMV
P8G0338
Benzoic Acid
BRL
mg/kg dry
0.42
0.036
1
8270D
7/25/18 15:44
JMV
P8G0338
Benzyl alcohol
BRL
mg/kg dry
0.42
0.056
1
8270D
7/25/18 15:44
JMV
P8G0338
bis(2-Chloroethoxy)methane
BRL
mg/kg dry
0.42
0.073
1
8270D
7/25/18 15:44
JMV
P8G0338
Bis(2-Chloroethyl)ether
BRL
mg/kg dry
0.42
0.060
1
8270D
7/25/18 15:44
JMV
P8G0338
Bis(2-chloroisopropyl)ether
BRL
mg/kg dry
0.42
0.072
1
8270D
7/25/18 15:44
JMV
P8G0338
Bis(2-Ethylhexyl)phthalate
BRL
mg/kg dry
0.42
0.063
1
8270D
7/25/18 15:44
JMV
P8G0338
Butyl benzyl phthalate
BRL
mg/kg dry
0.42
0.060
1
8270D
7/25/18 15:44
JMV
P8G0338
Chrysene
BRL
mg/kg dry
0.42
0.053
1
8270D
7/25/18 15:44
JMV
P8G0338
Dibenzo(a,h)anthracene
BRL
mg/kg dry
0.42
0.052
1
8270D
7/25/18 15:44
JMV
P8G0338
Dibenzofuran
BRL
mg/kg dry
0.42
0.064
1
8270D
7/25/18 15:44
JMV
P8G0338
Diethyl phthalate
BRL
mg/kg dry
0.42
0.058
1
8270D
7/25/18 15:44
JMV
P8G0338
Dimethyl phthalate
BRL
mg/kg dry
0.42
0.056
1
8270D
7/25/18 15:44
JMV
P8G0338
Di-n-butyl phthalate
BRL
mg/kg dry
0.42
0.060
1
8270D
7/25/18 15:44
JMV
P8G0338
Di-n-octyl phthalate
BRL
mg/kg dry
0.42
0.052
1
8270D
7/25/18 15:44
JMV
P8G0338
Fluoranthene
BRL
mg/kg dry
0.42
0.054
1
8270D
7/25/18 15:44
JMV
P8G0338
Fluorene
BRL
mg/kg dry
0.42
0.061
1
8270D
7/25/18 15:44
JMV
P8G0338
Hexachlorobenzene
BRL
mg/kg dry
0.42
0.067
1
8270D
7/25/18 15:44
JMV
P8G0338
Hexachlorobutadiene
BRL
mg/kg dry
0.42
0.076
1
8270D
7/25/18 15:44
JMV
P8G0338
Hexachlorocyclopentadiene
BRL
mg/kg dry
0.42
0.075
1
8270D
7/25/18 15:44
JMV
P8G0338
Hexachloroethane
BRL
mg/kg dry
0.42
0.071
1
8270D
7/25/18 15:44
JMV
P8G0338
Indeno(1,2,3-cd)pyrene
BRL
mg/kg dry
0.42
0.049
1
8270D
7/25/18 15:44
JMV
P8G0338
Isophorone
BRL
mg/kg dry
0.42
0.057
1
8270D
7/25/18 15:44
JMV
P8G0338
Naphthalene
BRL
mg/kg dry
0.42
0.068
1
8270D
7/25/18 15:44
JMV
P8G0338
Nitrobenzene
BRL
mg/kg dry
0.42
0.060
1
8270D
7/25/18 15:44
JMV
P8G0338
N-Nitroso-di-n-propylamine
BRL
mg/kg dry
0.42
0.067
1
8270D
7/25/18 15:44
JMV
P8G0338
N-Nitrosodiphenylamine
BRL
mg/kg dry
0.42
0.064
1
8270D
7/25/18 15:44
JMV
P8G0338
Pentachlorophenol
BRL
mg/kg dry
0.42
0.050
1
8270D
7/25/18 15:44
JMV
P8G0338
Phenanthrene
BRL
mg/kg dry
0.42
0.055
1
8270D
7/25/18 15:44
JMV
P8G0338
Phenol
BRL
mg/kg dry
0.42
0.062
1
8270D
7/25/18 15:44
JMV
P8G0338
Pyrene
BRL
mg/kg dry
0.42
0.056
1
8270D
7/25/18 15:44
JMV
P8G0338
Surrogate
Recovery
Control Limits
2,4,6-Tribromophenol
75 %
39-132
2-Fluorobiphenyl
74 %
44-115
2-Fluorophenol
70 %
35-115
Nitrobenzene-d5
61 %
37-122
Phenol-d5
65 %
34-121
Terphenyl-d14
77 %
54-127
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 9 of 17

P R I IS M Full -Service Analytical s
Environmental Solutions
LABORATORIES, INC.
Level II QC Report
7/26/18
NOVA Engineering & Environmental Project: PreGel (Concord, NC) Prism Work Order: 8070314
Attn: David Penalva Time Submitted: 7/23/2018 12:23:OOPM
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Semivolatile Organic Compounds by GC/MS - Quality Control
Reporting Spike Source %REC RPD
Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes
Batch P8GO338 - 3546
Blank (P8G0338-BLK1)
Prepared: 07/23/18 Analyzed: 07/24/18
1,2,4-Trichlorobenzene
BRL
0.33
mg/kg wet
1,2-Dichlorobenzene
BRL
0.33
mg/kg wet
1,3-Dichlorobenzene
BRL
0.33
mg/kg wet
1,4-Dichlorobenzene
BRL
0.33
mg/kg wet
1-Methyl naphthalene
BRL
0.33
mg/kg wet
2,4,6-Trichlorophenol
BRL
0.33
mg/kg wet
2,4-Dichlorophenol
BRL
0.33
mg/kg wet
2,4-Dimethylphenol
BRL
0.33
mg/kg wet
2,4-Dinitrophenol
BRL
0.33
mg/kg wet
2,4-Dinitrotoluene
BRL
0.33
mg/kg wet
2,6-Dinitrotoluene
BRL
0.33
mg/kg wet
2-Chloronaphthalene
BRL
0.33
mg/kg wet
2-Chlorophenol
BRL
0.33
mg/kg wet
2-Methyl naphthalene
BRL
0.33
mg/kg wet
2-Methylphenol
BRL
0.33
mg/kg wet
2-Nitrophenol
BRL
0.33
mg/kg wet
3,3'-Dichlorobenzidine
BRL
0.33
mg/kg wet
3/4-Methyl phenol
BRL
0.33
mg/kg wet
4,6-Dinitro-2-methylphenol
BRL
0.33
mg/kg wet
4-Bromophenyl phenyl ether
BRL
0.33
mg/kg wet
4-Chloro-3-methylphenol
BRL
0.33
mg/kg wet
4-Chloroaniline
BRL
0.33
mg/kg wet
4-Chlorophenyl phenyl ether
BRL
0.33
mg/kg wet
4-Nitrophenol
BRL
0.33
mg/kg wet
Acenaphthene
BRL
0.33
mg/kg wet
Acenaphthylene
BRL
0.33
mg/kg wet
Anthracene
BRL
0.33
mg/kg wet
Azobenzene
BRL
0.33
mg/kg wet
Benzo(a)anthracene
BRL
0.33
mg/kg wet
Benzo(a)pyrene
BRL
0.33
mg/kg wet
Benzo(b)fluoranthene
BRL
0.33
mg/kg wet
Benzo(g,h,i)perylene
BRL
0.33
mg/kg wet
Benzo(k)fluoranthene
BRL
0.33
mg/kg wet
Benzoic Acid
BRL
0.33
mg/kg wet
Benzyl alcohol
BRL
0.33
mg/kg wet
bis(2-Chloroethoxy)methane
BRL
0.33
mg/kg wet
Bis(2-Chloroethyl)ether
BRL
0.33
mg/kg wet
Bis(2-chloroisopropyl)ether
BRL
0.33
mg/kg wet
Bis(2-Ethylhexyl)phthalate
BRL
0.33
mg/kg wet
Butyl benzyl phthalate
BRL
0.33
mg/kg wet
Chrysene
BRL
0.33
mg/kg wet
Dibenzo(a,h)anthracene
BRL
0.33
mg/kg wet
Dibenzofuran
BRL
0.33
mg/kg wet
Diethyl phthalate
BRL
0.33
mg/kg wet
Dimethyl phthalate
BRL
0.33
mg/kg wet
Di-n-butyl phthalate
BRL
0.33
mg/kg wet
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 10 of 17

PRISM
R I S Full -Service Analytical s
Environmental Solutions
�- LABORATORIES, INC.
Level II QC Report
7/26/18
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Semivolatile Organic Compounds by GC/MS - Quality Control
Analyte
Batch P8GO338 - 3546
Prism Work Order: 8070314
Time Submitted: 7/23/2018 12:23:OOPM
Reporting Spike Source %REC RPD
Result Limit Units Level Result %REC Limits RPD Limit Notes
Blank (P8G0338-BLK1)
Prepared: 07/23/18 Analyzed: 07/24/18
Di-n-octyl phthalate
BRL
0.33
mg/kg wet
Fluoranthene
BRL
0.33
mg/kg wet
Fluorene
BRL
0.33
mg/kg wet
Hexachlorobenzene
BRL
0.33
mg/kg wet
Hexachlorobutadiene
BRL
0.33
mg/kg wet
Hexachlorocyclopentadiene
BRL
0.33
mg/kg wet
Hexachloroethane
BRL
0.33
mg/kg wet
Indeno(1,2,3-cd)pyrene
BRL
0.33
mg/kg wet
Isophorone
BRL
0.33
mg/kg wet
Naphthalene
BRL
0.33
mg/kg wet
Nitrobenzene
BRL
0.33
mg/kg wet
N-Nitroso-di-n-propylamine
BRL
0.33
mg/kg wet
N-Nitrosodiphenylamine
BRL
0.33
mg/kg wet
Pentachlorophenol
BRL
0.33
mg/kg wet
Phenanthrene
BRL
0.33
mg/kg wet
Phenol
BRL
0.33
mg/kg wet
Pyrene
BRL
0.33
mg/kg wet
Surrogate: 2,4,6-Tribromophenol
2.09
mg/kg wet
3.333
63
39-132
Surrogate: 2-Fluorobiphenyl
1.17
mg/kg wet
1.667
70
44-115
Surrogate: 2-Fluorophenol
2.31
mg/kg wet
3.333
69
35-115
Surrogate: Nitrobenzene-d5
1.02
mg/kg wet
1.667
61
37-122
Surrogate: Phenol-d5
2.26
mg/kg wet
3.333
68
34-121
Surrogate: Terphenyl-d14
1.08
mg/kg wet
1.667
65
54-127
LCS (P8G0338-BS1)
Prepared: 07/23/18 Analyzed: 07/24/18
1,2,4-Trichlorobenzene
0.738
0.33
mg/kg wet
1.667
44
34-118
1,2-Dichlorobenzene
0.704
0.33
mg/kg wet
1.667
42
33-117
1,3-Dichlorobenzene
0.653
0.33
mg/kg wet
1.667
39
30-115
1,4-Dichlorobenzene
0.667
0.33
mg/kg wet
1.667
40
31-115
1-Methyl naphthalene
0.870
0.33
mg/kg wet
1.667
52
40-119
2,4,6-Trichlorophenol
0.900
0.33
mg/kg wet
1.667
54
39-126
2,4-Dichlorophenol
0.847
0.33
mg/kg wet
1.667
51
40-122
2,4-Dimethylphenol
1.17
0.33
mg/kg wet
1.667
70
30-127
2,4-Dinitrophenol
0.839
0.33
mg/kg wet
1.667
50
27-129
2,4-Dinitrotoluene
1.04
0.33
mg/kg wet
1.667
63
48-126
2,6-Dinitrotoluene
1.04
0.33
mg/kg wet
1.667
63
46-124
2-Chloronaphthalene
0.854
0.33
mg/kg wet
1.667
51
41-114
2-Chlorophenol
0.859
0.33
mg/kg wet
1.667
52
34-121
2-Methyl naphthalene
0.827
0.33
mg/kg wet
1.667
50
38-122
2-Methylphenol
0.869
0.33
mg/kg wet
1.667
52
32-122
2-Nitrophenol
0.769
0.33
mg/kg wet
1.667
46
36-123
3,3'-Dichlorobenzidine
1.29
0.33
mg/kg wet
1.667
77
22-121
3/4-Methyl phenol
0.771
0.33
mg/kg wet
1.667
46
34-119
4,6-Dinitro-2-methylphenol
0.853
0.33
mg/kg wet
1.667
51
29-132
4-Bromophenyl phenyl ether
1.06
0.33
mg/kg wet
1.667
63
46-124
4-Chloro-3-methylphenol
0.889
0.33
mg/kg wet
1.667
53
45-122
4-Chloroaniline
1.03
0.33
mg/kg wet
1.667
62
17-106
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 11 of 17

PRISM
R I S Full -Service Analytical s
Environmental Solutions
�- LABORATORIES, INC.
Level II QC Report
7/26/18
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Semivolatile Organic Compounds by GC/MS - Quality Control
Analyte
Batch P8GO338 - 3546
Prism Work Order: 8070314
Time Submitted: 7/23/2018 12:23:OOPM
Reporting Spike Source %REC RPD
Result Limit Units Level Result %REC Limits RPD Limit Notes
LCS (P8G0338-BS1)
Prepared: 07/23/18 Analyzed: 07/24/18
4-Chlorophenyl phenyl ether
0.992
0.33
mg/kg wet
1.667
59
45-121
4-Nitrophenol
1.01
0.33
mg/kg wet
1.667
61
30-132
Acenaphthene
0.934
0.33
mg/kg wet
1.667
56
40-123
Acenaphthylene
0.971
0.33
mg/kg wet
1.667
58
32-132
Anthracene
1.26
0.33
mg/kg wet
1.667
76
47-123
Azobenzene
1.00
0.33
mg/kg wet
1.667
60
39-125
Benzo(a)anthracene
1.20
0.33
mg/kg wet
1.667
72
49-126
Benzo(a)pyrene
1.24
0.33
mg/kg wet
1.667
75
45-129
Benzo(b)fluoranthene
1.19
0.33
mg/kg wet
1.667
72
45-132
Benzo(g,h,i)perylene
1.23
0.33
mg/kg wet
1.667
74
43-134
Benzo(k)fluoranthene
1.21
0.33
mg/kg wet
1.667
73
47-132
Benzoic Acid
0.561
0.33
mg/kg wet
1.667
34
10-83
Benzyl alcohol
0.865
0.33
mg/kg wet
1.667
52
29-122
bis(2-Chloroethoxy)methane
0.891
0.33
mg/kg wet
1.667
53
36-121
Bis(2-Chloroethyl)ether
0.703
0.33
mg/kg wet
1.667
42
31-120
Bis(2-chloroisopropyl)ether
0.772
0.33
mg/kg wet
1.667
46
33-131
Bis(2-Ethylhexyl)phthalate
1.22
0.33
mg/kg wet
1.667
73
51-133
Butyl benzyl phthalate
1.19
0.33
mg/kg wet
1.667
71
48-132
Chrysene
1.17
0.33
mg/kg wet
1.667
70
50-124
Dibenzo(a,h)anthracene
1.22
0.33
mg/kg wet
1.667
73
45-134
Dibenzofuran
0.967
0.33
mg/kg wet
1.667
58
44-120
Diethyl phthalate
1.13
0.33
mg/kg wet
1.667
68
50-124
Dimethyl phthalate
1.07
0.33
mg/kg wet
1.667
64
48-124
Di-n-butyl phthalate
1.25
0.33
mg/kg wet
1.667
75
51-128
Di-n-octyl phthalate
1.36
0.33
mg/kg wet
1.667
81
45-140
Fluoranthene
1.19
0.33
mg/kg wet
1.667
72
50-127
Fluorene
1.06
0.33
mg/kg wet
1.667
64
43-125
Hexachlorobenzene
1.07
0.33
mg/kg wet
1.667
64
45-122
Hexachlorobutadiene
0.763
0.33
mg/kg wet
1.667
46
32-123
Hexachlorocyclopentadiene
0.550
0.33
mg/kg wet
1.667
33
32-117
Hexachloroethane
0.650
0.33
mg/kg wet
1.667
39
28-117
Indeno(1,2,3-cd)pyrene
1.46
0.33
mg/kg wet
1.667
87
45-133
Isophorone
0.922
0.33
mg/kg wet
1.667
55
30-122
Naphthalene
0.810
0.33
mg/kg wet
1.667
49
35-123
Nitrobenzene
0.796
0.33
mg/kg wet
1.667
48
34-122
N-Nitroso-di-n-propylamine
0.808
0.33
mg/kg wet
1.667
48
36-120
N-Nitrosodiphenylamine
1.32
0.33
mg/kg wet
1.667
79
38-127
Pentachlorophenol
0.872
0.33
mg/kg wet
1.667
52
25-133
Phenanthrene
1.18
0.33
mg/kg wet
1.667
71
50-121
Phenol
0.861
0.33
mg/kg wet
1.667
52
34-121
Pyrene
1.21
0.33
mg/kg wet
1.667
73
47-127
Surrogate: 2,4,6-Tribromophenol
2.00
mg/kg wet
3.333
60
39-132
Surrogate: 2-Fluorobiphenyl
0.915
mg/kg wet
1,667
55
44-115
Surrogate: 2-Fluorophenol
1.73
mg/kg wet
3.333
52
35-115
Surrogate: Nitrobenzene-d5
0.764
mg/kg wet
1.667
46
37-122
Surrogate: Phenol-d5
1.70
mg/kg wet
3,333
51
34-121
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 12 of 17

P R I IS M Full -Service Analytical &
Environmental Solutions
LABORATORIES, INC.
Level II QC Report
7/26/18
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Semivolatile Organic Compounds by GC/MS - Quality Control
Analyte
Batch P81130338 - 3546
Prism Work Order: 8070314
Time Submitted: 7/23/2018 12:23:OOPM
Reporting Spike Source %REC RPD
Result Limit Units Level Result %REC Limits RPD Limit Notes
LCS (P81130338-113SI) Prepared: 07/23/18 Analyzed: 07/24/18
Surrogate: Terphenyl-d14 1.13 mg/kg wet 1.667 68 54-127
LCS Dup (P8G0338-BSD1)
Prepared: 07/23/18 Analyzed: 07/24/18
1,2,4-Trichlorobenzene
0.895
0.33
mg/kg wet
1.667
54
34-118
19
20
1,2-Dichlorobenzene
0.864
0.33
mg/kg wet
1.667
52
33-117
20
20
1,3-Dichlorobenzene
0.813
0.33
mg/kg wet
1.667
49
30-115
22
20 D
1,4-Dichlorobenzene
0.845
0.33
mg/kg wet
1.667
51
31-115
24
20 D
1-Methyl naphthalene
1.06
0.33
mg/kg wet
1.667
64
40-119
20
20
2,4,6-Trichlorophenol
1.04
0.33
mg/kg wet
1.667
62
39-126
14
20
2,4-Dichlorophenol
1.03
0.33
mg/kg wet
1.667
62
40-122
19
20
2,4-Dimethylphenol
1.42
0.33
mg/kg wet
1.667
85
30-127
19
20
2,4-Dinitrophenol
0.797
0.33
mg/kg wet
1.667
48
27-129
5
20
2,4-Dinitrotoluene
1.10
0.33
mg/kg wet
1.667
66
48-126
5
20
2,6-Dinitrotoluene
1.10
0.33
mg/kg wet
1.667
66
46-124
5
20
2-Chloronaphthalene
1.04
0.33
mg/kg wet
1.667
62
41-114
20
20
2-Chlorophenol
1.04
0.33
mg/kg wet
1.667
63
34-121
19
20
2-Methyl naphthalene
1.00
0.33
mg/kg wet
1.667
60
38-122
19
20
2-Methylphenol
1.08
0.33
mg/kg wet
1.667
65
32-122
21
20 D
2-Nitrophenol
0.951
0.33
mg/kg wet
1.667
57
36-123
21
20 D
3,3'-Dichlorobenzidine
1.15
0.33
mg/kg wet
1.667
69
22-121
11
20
3/4-Methyl phenol
0.961
0.33
mg/kg wet
1.667
58
34-119
22
20 D
4,6-Dinitro-2-methylphenol
0.788
0.33
mg/kg wet
1.667
47
29-132
8
20
4-Bromophenyl phenyl ether
1.08
0.33
mg/kg wet
1.667
65
46-124
3
20
4-Chloro-3-methylphenol
1.03
0.33
mg/kg wet
1.667
62
45-122
15
20
4-Chloroaniline
1.25
0.33
mg/kg wet
1.667
75
17-106
19
20
4-Chlorophenyl phenyl ether
1.08
0.33
mg/kg wet
1.667
65
45-121
9
20
4-Nitrophenol
0.976
0.33
mg/kg wet
1.667
59
30-132
4
20
Acenaphthene
1.07
0.33
mg/kg wet
1.667
64
40-123
14
20
Acenaphthylene
1.14
0.33
mg/kg wet
1.667
68
32-132
16
20
Anthracene
1.22
0.33
mg/kg wet
1.667
73
47-123
3
20
Azobenzene
1.06
0.33
mg/kg wet
1.667
64
39-125
6
20
Benzo(a)anthracene
1.09
0.33
mg/kg wet
1.667
66
49-126
9
20
Benzo(a)pyrene
1.15
0.33
mg/kg wet
1.667
69
45-129
8
20
Benzo(b)fluoranthene
1.11
0.33
mg/kg wet
1.667
67
45-132
7
20
Benzo(g,h,i)perylene
1.13
0.33
mg/kg wet
1.667
68
43-134
9
20
Benzo(k)fluoranthene
1.12
0.33
mg/kg wet
1.667
67
47-132
8
20
Benzoic Acid
0.603
0.33
mg/kg wet
1.667
36
10-83
7
20
Benzyl alcohol
1.08
0.33
mg/kg wet
1.667
65
29-122
22
20 D
bis(2-Chloroethoxy)methane
1.10
0.33
mg/kg wet
1.667
66
36-121
21
20 D
Bis(2-Chloroethyl)ether
0.811
0.33
mg/kg wet
1.667
49
31-120
14
20
Bis(2-chloroisopropyl)ether
0.943
0.33
mg/kg wet
1.667
57
33-131
20
20
Bis(2-Ethylhexyl)phthalate
1.10
0.33
mg/kg wet
1.667
66
51-133
11
20
Butyl benzyl phthalate
1.07
0.33
mg/kg wet
1.667
64
48-132
10
20
Chrysene
1.10
0.33
mg/kg wet
1.667
66
50-124
7
20
Dibenzo(a,h)anthracene
1.12
0.33
mg/kg wet
1.667
67
45-134
9
20
Dibenzofuran
1.11
0.33
mg/kg wet
1.667
67
44-120
14
20
Diethyl phthalate
1.10
0.33
mg/kg wet
1.667
66
50-124
2
20
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 13 of 17

PRISM
R I S Full -Service Analytical s
Environmental Solutions
�- LABORATORIES, INC.
Level II QC Report
7/26/18
NOVA Engineering & Environmental Project: PreGel (Concord, NC)
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Semivolatile Organic Compounds by GC/MS - Quality Control
Reporting
Analyte Result Limit Units
Batch P8GO338 - 3546
Prism Work Order: 8070314
Time Submitted: 7/23/2018 12:23:OOPM
Spike Source %REC RPD
Level Result %REC Limits RPD Limit Notes
LCS Dup (P8G0338-BSD1)
Prepared: 07/23/18 Analyzed: 07/24/18
Dimethyl phthalate
1.10
0.33
mg/kg wet
1.667
66
48-124
3
20
Di-n-butyl phthalate
1.13
0.33
mg/kg wet
1.667
68
51-128
10
20
Di-n-octyl phthalate
1.24
0.33
mg/kg wet
1.667
74
45-140
9
20
Fluoranthene
1.11
0.33
mg/kg wet
1.667
67
50-127
7
20
Fluorene
1.16
0.33
mg/kg wet
1.667
70
43-125
9
20
Hexachlorobenzene
1.04
0.33
mg/kg wet
1.667
62
45-122
3
20
Hexachlorobutadiene
0.958
0.33
mg/kg wet
1.667
57
32-123
23
20 D
Hexachlorocyclopentadiene
0.686
0.33
mg/kg wet
1.667
41
32-117
22
20 D
Hexachloroethane
0.836
0.33
mg/kg wet
1.667
50
28-117
25
20 D
Indeno(1,2,3-cd)pyrene
1.35
0.33
mg/kg wet
1.667
81
45-133
7
20
Isophorone
1.11
0.33
mg/kg wet
1.667
66
30-122
18
20
Naphthalene
0.991
0.33
mg/kg wet
1.667
59
35-123
20
20
Nitrobenzene
0.947
0.33
mg/kg wet
1.667
57
34-122
17
20
N-Nitroso-di-n-propylamine
0.994
0.33
mg/kg wet
1.667
60
36-120
21
20 D
N-Nitrosodiphenylamine
1.35
0.33
mg/kg wet
1.667
81
38-127
2
20
Pentachlorophenol
0.799
0.33
mg/kg wet
1.667
48
25-133
9
20
Phenanthrene
1.15
0.33
mg/kg wet
1.667
69
50-121
3
20
Phenol
1.07
0.33
mg/kg wet
1.667
64
34-121
21
20 D
Pyrene
1.10
0.33
mg/kg wet
1.667
66
47-127
10
20
Surrogate: 2,4,6-Tribromophenol
1.98
mg/kg wet
3.333
59
39-132
Surrogate: 2-Fluorobiphenyl
1.08
mg/kg wet
1.667
65
44-115
Surrogate: 2-Fluorophenol
2.12
mg/kg wet
3.333
64
35-115
Surrogate: Nitrobenzene-d5
0.942
mg/kg wet
1.667
57
37-122
Surrogate: Phenol-d5
2.12
mg/kg wet
3.333
64
34-121
Surrogate: Terphenyl-d14
1.02
mg/kg wet
1.667
61
54-127
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 14 of 17

PRISM
R I S Full -Service Analytical s
Environmental Solutions
�- LABORATORIES, INC.
Level II QC Report
7/26/18
NOVA Engineering & Environmental Project: PreGel (Concord, NC)
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Extractable Petroleum Hydrocarbons by GC/FID - Quality Control
Reporting
Analyte Result Limit Units
Batch P8G0375 - 3546
Prism Work Order: 8070314
Time Submitted: 7/23/2018 12:23:OOPM
Spike Source %REC RPD
Level Result %REC Limits RPD Limit Notes
Blank (P8G0375-BLK1)
Prepared: 07/24/18 Analyzed: 07/25/18
C9-C18 Aliphatics
BRL
25
mg/kg wet
C19-C36 Aliphatics
BRL
25
mg/kg wet
C11-C22 Aromatics
2.53
10
mg/kg wet
J
Surrogate: 1-Chlorooctadecane
1.68
mg/kg wet
2.000
84
40-140
Surrogate: o-Terphenyl
1.66
mg/kg wet
2.000
83
40-140
Surrogate: 2-Fluorobiphenyl
3.73
mg/kg wet
4.000
93
40-140
Surrogate: 2-Bromonaphthalene
4.24
mg/kg wet
4.000
106
40-140
LCS (P8G0375-BSI)
Prepared: 07/24/18 Analyzed: 07/25/18
C9-C18 Aliphatics
38.8
25
mg/kg wet
60.00
65
40-140
C19-C36 Aliphatics
73.4
25
mg/kg wet
80.00
92
40-140
C1 1-C22 Aromatics
151
10
mg/kg wet
170.0
89
40-140
Surrogate: 1-Chlorooctadecane
1.68
mg/kg wet
2.000
84
40-140
Surrogate: o-Terphenyl
1.72
mg/kg wet
2.000
86
40-140
Surrogate: 2-Fluorobiphenyl
3.56
mg/kg wet
4.000
89
40-140
Surrogate: 2-Bromonaphthalene
4.24
mg/kg wet
4.000
106
40-140
LCS Dup (P8G0375-BSD1)
Prepared: 07/24/18 Analyzed: 07/25/18
C9-C18 Aliphatics
45.2
25
mg/kg wet
60.00
75
40-140 15 50
C19-C36 Aliphatics
83.4
25
mg/kg wet
80.00
104
40-140 13 50
C11-C22 Aromatics
172
10
mg/kg wet
170.0
101
40-140 13 50
Surrogate: 1-Chlorooctadecane
1.69
mg/kg wet
2.000
85
40-140
Surrogate: o-Terphenyl
1.80
mg/kg wet
2.000
90
40-140
Surrogate: 2-Fluorobiphenyl
3.46
mg/kg wet
4.000
86
40-140
Surrogate: 2-Bromonaphthalene
4.16
mg/kg wet
4.000
104
40-140
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 15 of 17

Prep Method: 3546
Lab Number Batch
Sample Extraction Data
Initial Final Date/Time
8070314-01 P8G0375
10 g
2 mL
07/24/18 17:10
8070314-02 P8G0375
10.14 g
2 mL
07/24/18 17:10
8070314-03 P8G0375
10.09 g
2 mL
07/24/18 17:10
Prep Method: Solids, Dry Weight
Lab Number Batch
Initial
Final
Date/Time
8070314-01
P8G0419
30 g
30 g
07/25/18 13:30
8070314-02
P8G0419
30 g
30 g
07/25/18 13:30
8070314-03
P8G0419
30 g
30 g
07/25/18 13:30
Prep Method: 3546
Lab Number
Batch
Initial
Final
Date/Time
8070314-01 P8G0338 30.07 g
8070314-02 P8G0338 30.13 g
8070314-03 P8G0338 30.03 g
1 mL 07/24/18 11:35
1 mL 07/24/18 11:35
1 mL 07/24/18 11:35
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 16 of 17

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Case Narrative
PRISM Full -Service Analytical &
Environmental Solutions
`,. LABORATORIES, INC.
NOVA Engineering & Environmental
David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
NC Certification No. 402
NC Drinking Water Cert No. 37735
SC Certification No. 99012
Project: PreGel (Concord, NC)
Lab Submittal Date: 08/09/2018
Prism Work Order: 8080158
11 /13/2018
This data package contains the analytical results for the project identified above and includes a Case Narrative, Sample
Results and Chain of Custody. Unless otherwise noted, all samples were received in acceptable condition and processed
according to the referenced methods.
Data qualifiers are flagged individually on each sample. A key reference for the data qualifiers appears at the end of this case
narrative.
Narrative Notes:
Samples were not received on wet ice. Samples came directly from the site and were refrigerated upon
receipt.
This is a Revised Report and supercedes the original laboratory report dated 08/21/15. The case
narrative was updated regarding the sample temperature.
Please call if you have any questions relating to this analytical report.
Respectfully,
PRISM LABORATORIES, INC.
a ---I
Angela D. Overcash
VP Laboratory Services
Reviewed By Angela D. Overcash
VP Laboratory Services
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 1 of 43

Data Qualifiers Key Reference:
A Due to large soil volume, matrix absorbed all Soium Bisulfate. New vial prepped in house and run.
BC Sample prepared from bulk container.
D RPD value outside of the control limits.
J Detected but below the Reporting Limit; therefore, result is an estimated concentration (CLP J-Flag).
RIC Not enough method specific containers received. Sample prepared from bulk container.
RLM Sample container suspected to have low methanol content. Results possibly biased high.
SR Surrogate recovery outside the QC limits.
BRL Below Reporting Limit
MDL Method Detection Limit
RPD Relative Percent Difference
Results reported to the reporting limit. All other results are reported to the MDL with values between MDL and
reporting limit indicated with a J.
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 2 of 43

Receipt Summary
Full -Service Analytical R
PRISMSample
Environmental Solutions
11/13/2018
LABORATORIES INC.
Prism Work Order: 8080158
Client Sample ID
Lab Sample ID
Matrix
Date/Time Sampled Date/Time Received
SG-1
8080158-01
Solid
08/09/18 7:38 08/09/18 9:10
SW-1
8080158-02
Solid
08/09/18 7:46 08/09/18 9:10
SW-2
8080158-03
Solid
08/09/18 7:53 08/09/18 9:10
SW-3
8080158-04
Solid
08/09/18 8:05 08/09/18 9:10
SW-4
8080158-05
Solid
08/09/18 8:15 08/09/18 9:10
Samples were received at 23.2 degrees C. See case narrative for further information.
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 3 of 43

Summary of Detections
P R
Full -Service Analytical &
I S M
Environmental Solutions
11/13/2018
LABORATORIES, INC.
Prism Work Order: 8080158
Prism ID
Client ID
Parameter
Method Result Units
8080158-01
SG-1
Acetone
8260B 0.015 J mg/kg dry
8080158-02
SW-1
C5-C8 Aliphatics
MADEP VPH 0.33 1 mg/kg dry
8080158-02
SW-1
C9-C12 Aliphatics
MADEP VPH 2.3 1 mg/kg dry
8080158-03
SW-2
Acetone
8260B 0.018 J mg/kg dry
8080158-04
SW-3
Methylene Chloride
8260E 0.016 mg/kg dry
8080158-05
SW-4
Benzoic Acid
8270D 0.50 mg/kg dry
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 4 of 43

PR I S M Full -Service Analytical Environmental Solutions
LABORATORIES INC.
Laboratory Report
11 /13/2018
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Client Sample ID: SG-1
Prism Sample ID: 8080158-01
Prism Work Order: 8080158
Time Collected: 08/09/18 07:38
Time Submitted: 08/09/18 09:10
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor Date/Time ID
Extractable Petroleum Hydrocarbons by GC/FID
C9-Cl8 Aliphatics BRL
mg/kg dry
34 0.22 1
MADEP EPH 8/20/18 21:04
ZRC P81-10270
C19-C36 Aliphatics BRL
mg/kg dry
34 4.0 1
MADEP EPH 8/20/18 21:04
ZRC P81-10270
C11-C22 Aromatics BRL
mg/kg dry
14 2.4 1
MADEP EPH 8/20/18 21:04
ZRC P81-10270
Surrogate
Recovery
Control Limits
1-Chlorooctadecane
82 %
40-140
o-Terphenyl
85 %
40-140
2-Fluorobiphenyl
89 %
40-140
2-Bromonaphthalene
84 %
40-140
General Chemistry Parameters
% Solids
Volatile Organic Compounds by GC/MS
73.6
% by
Weight
0.100
0.100
1
"SM2540 G
8/13/18 14:50
TJY
P8H0206
1,1,1,2-Tetrachloroethane
BRL
mg/kg dry
0.0029
0.00024
1
8260B
8/10/18 12:05
ANG
P81-10159
1,1,1-Trichloroethane
BRL
mg/kg dry
0.0029
0.00014
1
8260B
8/10/18 12:05
ANG
P81-10159
1,1,2,2-Tetrachloroethane
BRL
mg/kg dry
0.0029
0.00020
1
8260B
8/10/18 12:05
ANG
P81-10159
1,1,2-Trichloroethane
BRL
mg/kg dry
0.0029
0.00026
1
8260B
8/10/18 12:05
ANG
P81-10159
1,1-Dichloroethane
BRL
mg/kg dry
0.0029
0.000081
1
8260B
8/10/18 12:05
ANG
P81-10159
1,1-Dichloroethylene
BRL
mg/kg dry
0.0029
0.00013
1
8260B
8/10/18 12:05
ANG
P81-10159
1,1-Dichloropropylene
BRL
mg/kg dry
0.0029
0.00016
1
8260B
8/10/18 12:05
ANG
P81-10159
1,2,3-Trichlorobenzene
BRL
mg/kg dry
0.0029
0.00017
1
8260B
8/10/18 12:05
ANG
P81-10159
1,2,3-Trichloropropane
BRL
mg/kg dry
0.0029
0.00037
1
8260B
8/10/18 12:05
ANG
P81-10159
1,2,4-Trichlorobenzene
BRL
mg/kg dry
0.0029
0.00022
1
8260B
8/10/18 12:05
ANG
P81-10159
1,2,4-Trimethyl benzene
BRL
mg/kg dry
0.0029
0.00022
1
8260B
8/10/18 12:05
ANG
P81-10159
1,2-Dibromoethane
BRL
mg/kg dry
0.0029
0.00012
1
8260B
8/10/18 12:05
ANG
P81-10159
1,2-Dichlorobenzene
BRL
mg/kg dry
0.0029
0.00014
1
8260B
8/10/18 12:05
ANG
P81-10159
1,2-Dichloroethane
BRL
mg/kg dry
0.0029
0.00017
1
8260B
8/10/18 12:05
ANG
P81-10159
1,2-Dichloropropane
BRL
mg/kg dry
0.0029
0.00018
1
8260B
8/10/18 12:05
ANG
P81-10159
1,3,5-Trimethyl benzene
BRL
mg/kg dry
0.0029
0.00022
1
8260B
8/10/18 12:05
ANG
P81-10159
1,3-Dichlorobenzene
BRL
mg/kg dry
0.0029
0.00019
1
8260B
8/10/18 12:05
ANG
P81-10159
1,3-Dichloropropane
BRL
mg/kg dry
0.0029
0.00015
1
8260B
8/10/18 12:05
ANG
P81-10159
1,4-Dichlorobenzene
BRL
mg/kg dry
0.0029
0.00012
1
8260B
8/10/18 12:05
ANG
P81-10159
2,2-Dichloropropane
BRL
mg/kg dry
0.0029
0.00014
1
8260B
8/10/18 12:05
ANG
P81-10159
2-Chlorotoluene
BRL
mg/kg dry
0.0029
0.00015
1
8260B
8/10/18 12:05
ANG
P81-10159
4-Chlorotoluene
BRL
mg/kg dry
0.0029
0.00017
1
8260B
8/10/18 12:05
ANG
P81-10159
4-Isopropyltoluene
BRL
mg/kg dry
0.0029
0.00014
1
8260B
8/10/18 12:05
ANG
P81-10159
Acetone
0.015 J
mg/kg dry
0.029
0.00071
1
8260B
8/10/18 12:05
ANG
P8H0159
Benzene
BRL
mg/kg dry
0.0018
0.00017
1
8260B
8/10/18 12:05
ANG
P81-10159
Bromobenzene
BRL
mg/kg dry
0.0029
0.00024
1
8260B
8/10/18 12:05
ANG
P81-10159
Bromochloromethane
BRL
mg/kg dry
0.0029
0.00016
1
8260B
8/10/18 12:05
ANG
P81-10159
Bromodichloromethane
BRL
mg/kg dry
0.0029
0.00016
1
8260B
8/10/18 12:05
ANG
P81-10159
Bromoform
BRL
mg/kg dry
0.0029
0.00033
1
8260B
8/10/18 12:05
ANG
P81-10159
Bromomethane
BRL
mg/kg dry
0.0058
0.00036
1
8260B
8/10/18 12:05
ANG
P81-10159
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 5 of 43

PR I S M Full -Service Analytical Environmental Solutions
LABORATORIES INC.
Laboratory Report
11 /13/2018
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Client Sample ID: SG-1
Prism Sample ID: 8080158-01
Prism Work Order: 8080158
Time Collected: 08/09/18 07:38
Time Submitted: 08/09/18 09:10
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor Date/Time ID
Carbon Tetrachloride
BRL
mg/kg dry
0.0029
0.00015
1
8260B
8/10/18 12:05
ANG
P81-10159
Chlorobenzene
BRL
mg/kg dry
0.0029
0.00015
1
8260B
8/10/18 12:05
ANG
P81-10159
Chloroethane
BRL
mg/kg dry
0.0058
0.00024
1
8260B
8/10/18 12:05
ANG
P81-10159
Chloroform
BRL
mg/kg dry
0.0029
0.00021
1
8260B
8/10/18 12:05
ANG
P81-10159
Chloromethane
BRL
mg/kg dry
0.0029
0.00020
1
8260B
8/10/18 12:05
ANG
P81-10159
cis-1,2-Dichloroethylene
BRL
mg/kg dry
0.0029
0.00012
1
8260B
8/10/18 12:05
ANG
P81-10159
cis-1,3-Dichloropropylene
BRL
mg/kg dry
0.0029
0.000098
1
8260B
8/10/18 12:05
ANG
P81-10159
Dibromochloromethane
BRL
mg/kg dry
0.0029
0.00012
1
8260B
8/10/18 12:05
ANG
P81-10159
Dichlorodifluoromethane
BRL
mg/kg dry
0.0029
0.00013
1
8260B
8/10/18 12:05
ANG
P81-10159
Ethylbenzene
BRL
mg/kg dry
0.0029
0.00011
1
8260B
8/10/18 12:05
ANG
P81-10159
Isopropyl Ether
BRL
mg/kg dry
0.0029
0.00012
1
8260B
8/10/18 12:05
ANG
P81-10159
Isopropylbenzene (Cumene)
BRL
mg/kg dry
0.0029
0.00017
1
8260B
8/10/18 12:05
ANG
P81-10159
m,p-Xylenes
BRL
mg/kg dry
0.0058
0.00027
1
8260B
8/10/18 12:05
ANG
P81-10159
Methyl Butyl Ketone (2-Hexanone)
BRL
mg/kg dry
0.029
0.00026
1
8260B
8/10/18 12:05
ANG
P81-10159
Methyl Ethyl Ketone (2-Butanone)
BRL
mg/kg dry
0.058
0.00026
1
8260B
8/10/18 12:05
ANG
P81-10159
Methyl Isobutyl Ketone
BRL
mg/kg dry
0.029
0.00025
1
8260B
8/10/18 12:05
ANG
P81-10159
Methylene Chloride
BRL
mg/kg dry
0.0058
0.00016
1
8260B
8/10/18 12:05
ANG
P81-10159
Methyl-tert-Butyl Ether
BRL
mg/kg dry
0.0058
0.000094
1
8260B
8/10/18 12:05
ANG
P81-10159
Naphthalene
BRL
mg/kg dry
0.0058
0.000092
1
8260B
8/10/18 12:05
ANG
P81-10159
n-Butylbenzene
BRL
mg/kg dry
0.0029
0.00015
1
8260B
8/10/18 12:05
ANG
P81-10159
n-Propylbenzene
BRL
mg/kg dry
0.0029
0.00017
1
8260B
8/10/18 12:05
ANG
P81-10159
o-Xylene
BRL
mg/kg dry
0.0029
0.00012
1
8260B
8/10/18 12:05
ANG
P81-10159
sec-Butylbenzene
BRL
mg/kg dry
0.0029
0.00014
1
8260B
8/10/18 12:05
ANG
P81-10159
Styrene
BRL
mg/kg dry
0.0029
0.00018
1
8260B
8/10/18 12:05
ANG
P81-10159
tert-Butylbenzene
BRL
mg/kg dry
0.0029
0.000099
1
8260B
8/10/18 12:05
ANG
P81-10159
Tetrachloroethylene
BRL
mg/kg dry
0.0029
0.00014
1
8260B
8/10/18 12:05
ANG
P81-10159
Toluene
BRL
mg/kg dry
0.0029
0.00017
1
8260B
8/10/18 12:05
ANG
P81-10159
trans-1,2-Dichloroethylene
BRL
mg/kg dry
0.0029
0.00017
1
8260B
8/10/18 12:05
ANG
P81-10159
trans- 1,3-Dichloropropylene
BRL
mg/kg dry
0.0029
0.00015
1
8260B
8/10/18 12:05
ANG
P81-10159
Trichloroethylene
BRL
mg/kg dry
0.0029
0.00019
1
8260B
8/10/18 12:05
ANG
P81-10159
Trichlorofluoromethane
BRL
mg/kg dry
0.0029
0.00019
1
8260B
8/10/18 12:05
ANG
P81-10159
Vinyl acetate
BRL
mg/kg dry
0.015
0.00040
1
8260B
8/10/18 12:05
ANG
P81-10159
Vinyl chloride
BRL
mg/kg dry
0.0029
0.00014
1
8260B
8/10/18 12:05
ANG
P81-10159
Xylenes, total
BRL
mg/kg dry
0.0088
0.00055
1
8260B
8/10/18 12:05
ANG
P81-10159
Surrogate
Recovery
Control Limits
4-Bromofluorobenzene
101 %
70-130
Dibromofluoromethane
105 %
84-123
Toluene-d8
100 %
76-129
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 6 of 43

PR I S M Full -Service Analytical Environmental Solutions
LABORATORIES INC.
Laboratory Report
11 /13/2018
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Client Sample ID: SW-1
Prism Sample ID: 8080158-02
Prism Work Order: 8080158
Time Collected: 08/09/18 07:46
Time Submitted: 08/09/18 09:10
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor Date/Time ID
Extractable Petroleum Hydrocarbons by GC/FID
C9-Cl8 Aliphatics BRL
mg/kg dry
31 0.20 1
MADEP EPH 8/20/18 22:54
ZRC P81-10270
C19-C36 Aliphatics BRL
mg/kg dry
31 3.7 1
MADEP EPH 8/20/18 22:54
ZRC P81-10270
C11-C22 Aromatics BRL
mg/kg dry
13 2.3 1
MADEP EPH 8/20/18 22:54
ZRC P81-10270
Surrogate
Recovery
Control Limits
1-Chlorooctadecane
74 %
40-140
o-Terphenyl
74 %
40-140
2-Fluorobiphenyl
82 %
40-140
2-Bromonaphthalene
84 %
40-140
General Chemistry Parameters
% Solids 79.7
Semivolatile Organic Compounds by GC/MS
% by
Weight
0.100
0.100
1
"SM2540 G
8/13/18 14:50
TJY
P8H0206
1,2,4-Trichlorobenzene
BRL
mg/kg dry
0.41
0.065
1
8270D
8/14/18 20:54
JMV
P81-10226
1,2-Dichlorobenzene
BRL
mg/kg dry
0.41
0.063
1
8270D
8/14/18 20:54
JMV
P81-10226
1,3-Dichlorobenzene
BRL
mg/kg dry
0.41
0.058
1
8270D
8/14/18 20:54
JMV
P81-10226
1,4-Dichlorobenzene
BRL
mg/kg dry
0.41
0.061
1
8270D
8/14/18 20:54
JMV
P81-10226
1-Methyl naphthalene
BRL
mg/kg dry
0.41
0.080
1
8270D
8/14/18 20:54
JMV
P81-10226
2,4,6-Trichlorophenol
BRL
mg/kg dry
0.41
0.078
1
8270D
8/14/18 20:54
JMV
P81-10226
2,4-Dichlorophenol
BRL
mg/kg dry
0.41
0.080
1
8270D
8/14/18 20:54
JMV
P81-10226
2,4-Dimethylphenol
BRL
mg/kg dry
0.41
0.063
1
8270D
8/14/18 20:54
JMV
P81-10226
2,4-Dinitrophenol
BRL
mg/kg dry
0.41
0.058
1
8270D
8/14/18 20:54
JMV
P81-10226
2,4-Dinitrotoluene
BRL
mg/kg dry
0.41
0.050
1
8270D
8/14/18 20:54
JMV
P81-10226
2,6-Dinitrotoluene
BRL
mg/kg dry
0.41
0.055
1
8270D
8/14/18 20:54
JMV
P81-10226
2-Chloronaphthalene
BRL
mg/kg dry
0.41
0.060
1
8270D
8/14/18 20:54
JMV
P81-10226
2-Chlorophenol
BRL
mg/kg dry
0.41
0.059
1
8270D
8/14/18 20:54
JMV
P81-10226
2-Methyl naphthalene
BRL
mg/kg dry
0.41
0.066
1
8270D
8/14/18 20:54
JMV
P81-10226
2-Methylphenol
BRL
mg/kg dry
0.41
0.053
1
8270D
8/14/18 20:54
JMV
P81-10226
2-Nitrophenol
BRL
mg/kg dry
0.41
0.075
1
8270D
8/14/18 20:54
JMV
P81-10226
3,3'-Dichlorobenzidine
BRL
mg/kg dry
0.41
0.082
1
8270D
8/14/18 20:54
JMV
P81-10226
3/4-Methyl phenol
BRL
mg/kg dry
0.41
0.051
1
8270D
8/14/18 20:54
JMV
P81-10226
4,6-Dinitro-2-methylphenol
BRL
mg/kg dry
0.41
0.062
1
8270D
8/14/18 20:54
JMV
P81-10226
4-Bromophenyl phenyl ether
BRL
mg/kg dry
0.41
0.071
1
8270D
8/14/18 20:54
JMV
P81-10226
4-Chloro-3-methylphenol
BRL
mg/kg dry
0.41
0.058
1
8270D
8/14/18 20:54
JMV
P81-10226
4-Chloroaniline
BRL
mg/kg dry
0.41
0.050
1
8270D
8/14/18 20:54
JMV
P81-10226
4-Chlorophenyl phenyl ether
BRL
mg/kg dry
0.41
0.054
1
8270D
8/14/18 20:54
JMV
P81-10226
4-Nitrophenol
BRL
mg/kg dry
0.41
0.064
1
8270D
8/14/18 20:54
JMV
P81-10226
Acenaphthene
BRL
mg/kg dry
0.41
0.056
1
8270D
8/14/18 20:54
JMV
P81-10226
Acenaphthylene
BRL
mg/kg dry
0.41
0.060
1
8270D
8/14/18 20:54
JMV
P81-10226
Anthracene
BRL
mg/kg dry
0.41
0.067
1
8270D
8/14/18 20:54
JMV
P81-10226
Azobenzene
BRL
mg/kg dry
0.41
0.055
1
8270D
8/14/18 20:54
JMV
P81-10226
Benzo(a)anthracene
BRL
mg/kg dry
0.41
0.054
1
8270D
8/14/18 20:54
JMV
P81-10226
Benzo(a)pyrene
BRL
mg/kg dry
0.41
0.045
1
8270D
8/14/18 20:54
JMV
P81-10226
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 7 of 43

PR I S M Full -Service Analytical Environmental Solutions
LABORATORIES INC.
Laboratory Report
11 /13/2018
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Client Sample ID: SW-1
Prism Sample ID: 8080158-02
Prism Work Order: 8080158
Time Collected: 08/09/18 07:46
Time Submitted: 08/09/18 09:10
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor Date/Time ID
Benzo(b)fluoranthene
BRL
mg/kg dry
0.41
0.048
1
8270D
8/14/18 20:54
Benzo(g,h,i)perylene
BRL
mg/kg dry
0.41
0.045
1
8270D
8/14/18 20:54
Benzo(k)fluoranthene
BRL
mg/kg dry
0.41
0.054
1
8270D
8/14/18 20:54
Benzoic Acid
BRL
mg/kg dry
0.41
0.035
1
8270D
8/14/18 20:54
Benzyl alcohol
BRL
mg/kg dry
0.41
0.055
1
8270D
8/14/18 20:54
bis(2-Chloroethoxy)methane
BRL
mg/kg dry
0.41
0.072
1
8270D
8/14/18 20:54
Bis(2-Chloroethyl)ether
BRL
mg/kg dry
0.41
0.058
1
8270D
8/14/18 20:54
Bis(2-chloroisopropyl)ether
BRL
mg/kg dry
0.41
0.071
1
8270D
8/14/18 20:54
Bis(2-Ethylhexyl)phthalate
BRL
mg/kg dry
0.41
0.061
1
8270D
8/14/18 20:54
Butyl benzyl phthalate
BRL
mg/kg dry
0.41
0.059
1
8270D
8/14/18 20:54
Chrysene
BRL
mg/kg dry
0.41
0.052
1
8270D
8/14/18 20:54
Dibenzo(a,h)anthracene
BRL
mg/kg dry
0.41
0.050
1
8270D
8/14/18 20:54
Dibenzofuran
BRL
mg/kg dry
0.41
0.063
1
8270D
8/14/18 20:54
Diethyl phthalate
BRL
mg/kg dry
0.41
0.057
1
8270D
8/14/18 20:54
Dimethyl phthalate
BRL
mg/kg dry
0.41
0.055
1
8270D
8/14/18 20:54
Di-n-butyl phthalate
BRL
mg/kg dry
0.41
0.059
1
8270D
8/14/18 20:54
Di-n-octyl phthalate
BRL
mg/kg dry
0.41
0.051
1
8270D
8/14/18 20:54
Fluoranthene
BRL
mg/kg dry
0.41
0.053
1
8270D
8/14/18 20:54
Fluorene
BRL
mg/kg dry
0.41
0.059
1
8270D
8/14/18 20:54
Hexachlorobenzene
BRL
mg/kg dry
0.41
0.066
1
8270D
8/14/18 20:54
Hexachlorobutadiene
BRL
mg/kg dry
0.41
0.074
1
8270D
8/14/18 20:54
Hexachlorocyclopentadiene
BRL
mg/kg dry
0.41
0.074
1
8270D
8/14/18 20:54
Hexachloroethane
BRL
mg/kg dry
0.41
0.069
1
8270D
8/14/18 20:54
Indeno(1,2,3-cd)pyrene
BRL
mg/kg dry
0.41
0.048
1
8270D
8/14/18 20:54
Isophorone
BRL
mg/kg dry
0.41
0.056
1
8270D
8/14/18 20:54
Naphthalene
BRL
mg/kg dry
0.41
0.067
1
8270D
8/14/18 20:54
Nitrobenzene
BRL
mg/kg dry
0.41
0.059
1
8270D
8/14/18 20:54
N-Nitroso-di-n-propylamine
BRL
mg/kg dry
0.41
0.065
1
8270D
8/14/18 20:54
N-Nitrosodiphenylamine
BRL
mg/kg dry
0.41
0.063
1
8270D
8/14/18 20:54
Pentachlorophenol
BRL
mg/kg dry
0.41
0.049
1
8270D
8/14/18 20:54
Phenanthrene
BRL
mg/kg dry
0.41
0.054
1
8270D
8/14/18 20:54
Phenol
BRL
mg/kg dry
0.41
0.061
1
8270D
8/14/18 20:54
Pyrene
BRL
mg/kg dry
0.41
0.055
1
8270D
8/14/18 20:54
Surrogate
Recovery
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
JMV P81-10226
Control Limits
2,4,6-Tribromophenol
63 %
39-132
2-Fluorobiphenyl
83 %
44-115
2-Fluorophenol
70 %
35-115
Nitrobenzene-d5
72 %
37-122
Phenol-d5
67 %
34-121
Terphenyl-d14
77 %
54-127
Volatile Organic Compounds by GUMS A, BC
1,1,1,2-Tetrachloroethane BRL mg/kg dry 0.0062 0.00051 1 8260B 8/10/18 12:32 ANG P81-10159
1,1,1-Trichloroethane BRL mg/kg dry 0.0062 0.00030 1 8260B 8/10/18 12:32 ANG P81-10159
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 8 of 43

` Full -Service Analytical &
/ environmental Solutions
P R S M
LABORATORIES INC.
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Laboratory Report
11/13/2018
Client Sample ID: SW-1
Prism Sample ID: 8080158-02
Prism Work Order: 8080158
Time Collected: 08/09/18 07:46
Time Submitted: 08/09/18 09:10
Parameter
Result
Units
Report
MDL
Dilution
Method
Analysis Analyst
Batch
Limit
Factor
Date/Time
ID
1,1,2,2-TetrachIoroethane
BRL
mg/kg dry
0.0062
0.00042
1
8260B
8/10/18 12:32
ANG
P81-10159
1,1,2-Trichloroethane
BRL
mg/kg dry
0.0062
0.00055
1
8260B
8/10/18 12:32
ANG
P81-10159
1,1-Dichloroethane
BRL
mg/kg dry
0.0062
0.00017
1
8260B
8/10/18 12:32
ANG
P81-10159
1,1-Dichloroethylene
BRL
mg/kg dry
0.0062
0.00027
1
8260B
8/10/18 12:32
ANG
P81-10159
1,1-Dichloropropylene
BRL
mg/kg dry
0.0062
0.00034
1
8260B
8/10/18 12:32
ANG
P81-10159
1,2,3-Trichlorobenzene
BRL
mg/kg dry
0.0062
0.00035
1
8260B
8/10/18 12:32
ANG
P81-10159
1,2,3-Trichloropropane
BRL
mg/kg dry
0.0062
0.00079
1
8260B
8/10/18 12:32
ANG
P81-10159
1,2,4-Trichlorobenzene
BRL
mg/kg dry
0.0062
0.00046
1
8260B
8/10/18 12:32
ANG
P81-10159
1,2,4-Trimethyl benzene
BRL
mg/kg dry
0.0062
0.00047
1
8260B
8/10/18 12:32
ANG
P81-10159
1,2-Dibromoethane
BRL
mg/kg dry
0.0062
0.00025
1
8260B
8/10/18 12:32
ANG
P81-10159
1,2-Dichlorobenzene
BRL
mg/kg dry
0.0062
0.00029
1
8260B
8/10/18 12:32
ANG
P81-10159
1,2-Dichloroethane
BRL
mg/kg dry
0.0062
0.00037
1
8260B
8/10/18 12:32
ANG
P81-10159
1,2-Dichloropropane
BRL
mg/kg dry
0.0062
0.00038
1
8260B
8/10/18 12:32
ANG
P81-10159
1,3,5-Trimethyl benzene
BRL
mg/kg dry
0.0062
0.00047
1
8260B
8/10/18 12:32
ANG
P81-10159
1,3-Dichlorobenzene
BRL
mg/kg dry
0.0062
0.00041
1
8260B
8/10/18 12:32
ANG
P81-10159
1,3-Dichloropropane
BRL
mg/kg dry
0.0062
0.00031
1
8260B
8/10/18 12:32
ANG
P81-10159
1,4-Dichlorobenzene
BRL
mg/kg dry
0.0062
0.00024
1
8260B
8/10/18 12:32
ANG
P81-10159
2,2-Dichloropropane
BRL
mg/kg dry
0.0062
0.00029
1
8260B
8/10/18 12:32
ANG
P81-10159
2-Chlorotoluene
BRL
mg/kg dry
0.0062
0.00032
1
8260B
8/10/18 12:32
ANG
P81-10159
4-Chlorotoluene
BRL
mg/kg dry
0.0062
0.00037
1
8260B
8/10/18 12:32
ANG
P81-10159
4-Isopropyltoluene
BRL
mg/kg dry
0.0062
0.00030
1
8260B
8/10/18 12:32
ANG
P81-10159
Acetone
BRL
mg/kg dry
0.062
0.0015
1
8260B
8/10/18 12:32
ANG
P81-10159
Benzene
BRL
mg/kg dry
0.0037
0.00036
1
8260B
8/10/18 12:32
ANG
P81-10159
Bromobenzene
BRL
mg/kg dry
0.0062
0.00052
1
8260B
8/10/18 12:32
ANG
P81-10159
Bromochloromethane
BRL
mg/kg dry
0.0062
0.00034
1
8260B
8/10/18 12:32
ANG
P81-10159
Bromodichloromethane
BRL
mg/kg dry
0.0062
0.00034
1
8260B
8/10/18 12:32
ANG
P81-10159
Bromoform
BRL
mg/kg dry
0.0062
0.00070
1
8260B
8/10/18 12:32
ANG
P81-10159
Bromomethane
BRL
mg/kg dry
0.012
0.00076
1
8260B
8/10/18 12:32
ANG
P81-10159
Carbon Tetrachloride
BRL
mg/kg dry
0.0062
0.00031
1
8260B
8/10/18 12:32
ANG
P81-10159
Chlorobenzene
BRL
mg/kg dry
0.0062
0.00033
1
8260B
8/10/18 12:32
ANG
P81-10159
Chloroethane
BRL
mg/kg dry
0.012
0.00052
1
8260B
8/10/18 12:32
ANG
P81-10159
Chloroform
BRL
mg/kg dry
0.0062
0.00045
1
8260B
8/10/18 12:32
ANG
P81-10159
Chloromethane
BRL
mg/kg dry
0.0062
0.00042
1
8260B
8/10/18 12:32
ANG
P81-10159
cis-1,2-Dichloroethylene
BRL
mg/kg dry
0.0062
0.00026
1
8260B
8/10/18 12:32
ANG
P81-10159
cis-1,3-Dichloropropylene
BRL
mg/kg dry
0.0062
0.00021
1
8260B
8/10/18 12:32
ANG
P81-10159
Dibromochloromethane
BRL
mg/kg dry
0.0062
0.00025
1
8260B
8/10/18 12:32
ANG
P81-10159
Dichlorodifluoromethane
BRL
mg/kg dry
0.0062
0.00028
1
8260B
8/10/18 12:32
ANG
P81-10159
Ethylbenzene
BRL
mg/kg dry
0.0062
0.00024
1
8260B
8/10/18 12:32
ANG
P81-10159
Isopropyl Ether
BRL
mg/kg dry
0.0062
0.00025
1
8260B
8/10/18 12:32
ANG
P81-10159
Isopropylbenzene (Cumene)
BRL
mg/kg dry
0.0062
0.00037
1
8260B
8/10/18 12:32
ANG
P81-10159
m,p-Xylenes
BRL
mg/kg dry
0.012
0.00057
1
8260B
8/10/18 12:32
ANG
P81-10159
Methyl Butyl Ketone (2-Hexanone)
BRL
mg/kg dry
0.062
0.00056
1
8260B
8/10/18 12:32
ANG
P81-10159
Methyl Ethyl Ketone (2-Butanone)
BRL
mg/kg dry
0.12
0.00056
1
8260B
8/10/18 12:32
ANG
P81-10159
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 9 of 43

P R S M Laboratory Report
` Full -Service Analytical &
/ Environmental Solutions 11/13/2018
LABORATORIES INC.
NOVA Engineering & Environmental Project: PreGel (Concord, NC) Client Sample ID: SW-1
Attn: David Penalva Prism Sample ID: 8080158-02
5104 Reagan Drive Suite 8 Prism Work Order: 8080158
Charlotte, NC 28206 Sample Matrix: Solid Time Collected: 08/09/18 07:46
Time Submitted: 08/09/18 09:10
Parameter
Result
Units
Report
MDL Dilution
Method
Analysis
Analyst
Batch
Limit
Factor
Date/Time
ID
Methyl Isobutyl Ketone
BRL
mg/kg dry
0.062
0.00053
1
8260B
8/10/18 12:32
ANG
P8H0159
Methylene Chloride
BRL
mg/kg dry
0.012
0.00035
1
8260B
8/10/18 12:32
ANG
P8H0159
Methyl-tert-Butyl Ether
BRL
mg/kg dry
0.012
0.00020
1
8260B
8/10/18 12:32
ANG
P8H0159
Naphthalene
BRL
mg/kg dry
0.012
0.00020
1
8260B
8/10/18 12:32
ANG
P8H0159
n-Butylbenzene
BRL
mg/kg dry
0.0062
0.00031
1
8260B
8/10/18 12:32
ANG
P8H0159
n-Propylbenzene
BRL
mg/kg dry
0.0062
0.00037
1
8260B
8/10/18 12:32
ANG
P8H0159
o-Xylene
BRL
mg/kg dry
0.0062
0.00025
1
8260B
8/10/18 12:32
ANG
P8H0159
sec-Butylbenzene
BRL
mg/kg dry
0.0062
0.00030
1
8260B
8/10/18 12:32
ANG
P8H0159
Styrene
BRL
mg/kg dry
0.0062
0.00037
1
8260B
8/10/18 12:32
ANG
P8H0159
tert-Butylbenzene
BRL
mg/kg dry
0.0062
0.00021
1
8260B
8/10/18 12:32
ANG
P8H0159
Tetrachloroethylene
BRL
mg/kg dry
0.0062
0.00029
1
8260B
8/10/18 12:32
ANG
P8H0159
Toluene
BRL
mg/kg dry
0.0062
0.00035
1
8260B
8/10/18 12:32
ANG
P8H0159
trans-1,2-Dichloroethylene
BRL
mg/kg dry
0.0062
0.00037
1
8260B
8/10/18 12:32
ANG
P8H0159
trans-1,3-Dichloropropylene
BRL
mg/kg dry
0.0062
0.00032
1
8260B
8/10/18 12:32
ANG
P8H0159
Trichloroethylene
BRL
mg/kg dry
0.0062
0.00040
1
8260B
8/10/18 12:32
ANG
P8H0159
Trichlorofluoromethane
BRL
mg/kg dry
0.0062
0.00040
1
8260B
8/10/18 12:32
ANG
P8H0159
Vinyl acetate
BRL
mg/kg dry
0.031
0.00085
1
8260B
8/10/18 12:32
ANG
P8H0159
Vinyl chloride
BRL
mg/kg dry
0.0062
0.00030
1
8260B
8/10/18 12:32
ANG
P8H0159
Xylenes, total
BRL
mg/kg dry
0.019
0.0012
1
8260B
8/10/18 12:32
ANG
P8H0159
Surrogate
Recovery
Control Limits
4-Bromofluorobenzene
101 %
70-130
Dibromofluoromethane
106 %
84-123
Toluene-d8
99 %
76-129
Volatile Petroleum Hydrocarbons
by GC/PID/FID
RIC
C5-C8 Aliphatics
0.33 J
mg/kg dry
6.3
0.20
100
MADEP VPH
8/13/18 15:04
ANG/J
P81H0190
C9-C12 Aliphatics
2.3 J
mg/kg dry
6.3
0.33
100
MADEP VPH
8/13/18 15:04
ANG/J
P8H0190
C9-Cl0 Aromatics
BRL
mg/kg dry
6.3
0.070
100
MADEP VPH
8/13/18 15:04
ANG/J
P8H0190
Surrogate
Recovery
Control Limits
2,5-Dibromotoluene (PID)
154 %
70-130
SR
2,5-Dibromotoluene (FID)
152 %
70-130
SR
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, INC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 10 of 43

PR I S M Full -Service Analytical Environmental Solutions
LABORATORIES INC.
Laboratory Report
11 /13/2018
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Client Sample ID: SW-2
Prism Sample ID: 8080158-03
Prism Work Order: 8080158
Time Collected: 08/09/18 07:53
Time Submitted: 08/09/18 09:10
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor Date/Time ID
Extractable Petroleum Hydrocarbons by GC/FID
C9-Cl8 Aliphatics BRL
mg/kg dry
31 0.20 1
MADEP EPH 8/20/18 23:30
ZRC P81-10270
C19-C36 Aliphatics BRL
mg/kg dry
31 3.7 1
MADEP EPH 8/20/18 23:30
ZRC P81-10270
C11-C22 Aromatics BRL
mg/kg dry
13 2.3 1
MADEP EPH 8/20/18 23:30
ZRC P81-10270
Surrogate
Recovery
Control Limits
1-Chlorooctadecane
75 %
40-140
o-Terphenyl
78 %
40-140
2-Fluorobiphenyl
91 %
40-140
2-Bromonaphthalene
91 %
40-140
General Chemistry Parameters
% Solids 78.7
Semivolatile Organic Compounds by GC/MS
% by
Weight
0.100
0.100
1
"SM2540 G
8/13/18 14:50
TJY
P8H0206
1,2,4-Trichlorobenzene
BRL
mg/kg dry
0.42
0.065
1
8270D
8/10/18 22:31
JMV
P81-10146
1,2-Dichlorobenzene
BRL
mg/kg dry
0.42
0.063
1
8270D
8/10/18 22:31
JMV
P81-10146
1,3-Dichlorobenzene
BRL
mg/kg dry
0.42
0.059
1
8270D
8/10/18 22:31
JMV
P81-10146
1,4-Dichlorobenzene
BRL
mg/kg dry
0.42
0.061
1
8270D
8/10/18 22:31
JMV
P81-10146
1-Methyl naphthalene
BRL
mg/kg dry
0.42
0.081
1
8270D
8/10/18 22:31
JMV
P81-10146
2,4,6-Trichlorophenol
BRL
mg/kg dry
0.42
0.078
1
8270D
8/10/18 22:31
JMV
P81-10146
2,4-Dichlorophenol
BRL
mg/kg dry
0.42
0.081
1
8270D
8/10/18 22:31
JMV
P81-10146
2,4-Dimethylphenol
BRL
mg/kg dry
0.42
0.064
1
8270D
8/10/18 22:31
JMV
P81-10146
2,4-Dinitrophenol
BRL
mg/kg dry
0.42
0.058
1
8270D
8/10/18 22:31
JMV
P81-10146
2,4-Dinitrotoluene
BRL
mg/kg dry
0.42
0.051
1
8270D
8/10/18 22:31
JMV
P81-10146
2,6-Dinitrotoluene
BRL
mg/kg dry
0.42
0.056
1
8270D
8/10/18 22:31
JMV
P81-10146
2-Chloronaphthalene
BRL
mg/kg dry
0.42
0.061
1
8270D
8/10/18 22:31
JMV
P81-10146
2-Chlorophenol
BRL
mg/kg dry
0.42
0.059
1
8270D
8/10/18 22:31
JMV
P81-10146
2-Methyl naphthalene
BRL
mg/kg dry
0.42
0.067
1
8270D
8/10/18 22:31
JMV
P81-10146
2-Methylphenol
BRL
mg/kg dry
0.42
0.054
1
8270D
8/10/18 22:31
JMV
P81-10146
2-Nitrophenol
BRL
mg/kg dry
0.42
0.076
1
8270D
8/10/18 22:31
JMV
P81-10146
3,3'-Dichlorobenzidine
BRL
mg/kg dry
0.42
0.083
1
8270D
8/10/18 22:31
JMV
P81-10146
3/4-Methyl phenol
BRL
mg/kg dry
0.42
0.052
1
8270D
8/10/18 22:31
JMV
P81-10146
4,6-Dinitro-2-methylphenol
BRL
mg/kg dry
0.42
0.063
1
8270D
8/10/18 22:31
JMV
P81-10146
4-Bromophenyl phenyl ether
BRL
mg/kg dry
0.42
0.072
1
8270D
8/10/18 22:31
JMV
P81-10146
4-Chloro-3-methylphenol
BRL
mg/kg dry
0.42
0.059
1
8270D
8/10/18 22:31
JMV
P81-10146
4-Chloroaniline
BRL
mg/kg dry
0.42
0.050
1
8270D
8/10/18 22:31
JMV
P81-10146
4-Chlorophenyl phenyl ether
BRL
mg/kg dry
0.42
0.054
1
8270D
8/10/18 22:31
JMV
P81-10146
4-Nitrophenol
BRL
mg/kg dry
0.42
0.064
1
8270D
8/10/18 22:31
JMV
P81-10146
Acenaphthene
BRL
mg/kg dry
0.42
0.057
1
8270D
8/10/18 22:31
JMV
P81-10146
Acenaphthylene
BRL
mg/kg dry
0.42
0.061
1
8270D
8/10/18 22:31
JMV
P81-10146
Anthracene
BRL
mg/kg dry
0.42
0.067
1
8270D
8/10/18 22:31
JMV
P81-10146
Azobenzene
BRL
mg/kg dry
0.42
0.055
1
8270D
8/10/18 22:31
JMV
P81-10146
Benzo(a)anthracene
BRL
mg/kg dry
0.42
0.055
1
8270D
8/10/18 22:31
JMV
P81-10146
Benzo(a)pyrene
BRL
mg/kg dry
0.42
0.045
1
8270D
8/10/18 22:31
JMV
P81-10146
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 11 of 43

PR I S M Full -Service Analytical Environmental Solutions
LABORATORIES INC.
Laboratory Report
11 /13/2018
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Client Sample ID: SW-2
Prism Sample ID: 8080158-03
Prism Work Order: 8080158
Time Collected: 08/09/18 07:53
Time Submitted: 08/09/18 09:10
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor Date/Time ID
Benzo(b)fluoranthene
BRL
mg/kg dry
0.42
0.049
1
8270D
8/10/18 22:31
Benzo(g,h,i)perylene
BRL
mg/kg dry
0.42
0.046
1
8270D
8/10/18 22:31
Benzo(k)fluoranthene
BRL
mg/kg dry
0.42
0.055
1
8270D
8/10/18 22:31
Benzoic Acid
BRL
mg/kg dry
0.42
0.035
1
8270D
8/10/18 22:31
Benzyl alcohol
BRL
mg/kg dry
0.42
0.055
1
8270D
8/10/18 22:31
bis(2-Chloroethoxy)methane
BRL
mg/kg dry
0.42
0.073
1
8270D
8/10/18 22:31
Bis(2-Chloroethyl)ether
BRL
mg/kg dry
0.42
0.059
1
8270D
8/10/18 22:31
Bis(2-chloroisopropyl)ether
BRL
mg/kg dry
0.42
0.071
1
8270D
8/10/18 22:31
Bis(2-Ethylhexyl)phthalate
BRL
mg/kg dry
0.42
0.062
1
8270D
8/10/18 22:31
Butyl benzyl phthalate
BRL
mg/kg dry
0.42
0.060
1
8270D
8/10/18 22:31
Chrysene
BRL
mg/kg dry
0.42
0.053
1
8270D
8/10/18 22:31
Dibenzo(a,h)anthracene
BRL
mg/kg dry
0.42
0.051
1
8270D
8/10/18 22:31
Dibenzofuran
BRL
mg/kg dry
0.42
0.064
1
8270D
8/10/18 22:31
Diethyl phthalate
BRL
mg/kg dry
0.42
0.058
1
8270D
8/10/18 22:31
Dimethyl phthalate
BRL
mg/kg dry
0.42
0.055
1
8270D
8/10/18 22:31
Di-n-butyl phthalate
BRL
mg/kg dry
0.42
0.059
1
8270D
8/10/18 22:31
Di-n-octyl phthalate
BRL
mg/kg dry
0.42
0.051
1
8270D
8/10/18 22:31
Fluoranthene
BRL
mg/kg dry
0.42
0.053
1
8270D
8/10/18 22:31
Fluorene
BRL
mg/kg dry
0.42
0.060
1
8270D
8/10/18 22:31
Hexachlorobenzene
BRL
mg/kg dry
0.42
0.066
1
8270D
8/10/18 22:31
Hexachlorobutadiene
BRL
mg/kg dry
0.42
0.075
1
8270D
8/10/18 22:31
Hexachlorocyclopentadiene
BRL
mg/kg dry
0.42
0.075
1
8270D
8/10/18 22:31
Hexachloroethane
BRL
mg/kg dry
0.42
0.070
1
8270D
8/10/18 22:31
Indeno(1,2,3-cd)pyrene
BRL
mg/kg dry
0.42
0.048
1
8270D
8/10/18 22:31
Isophorone
BRL
mg/kg dry
0.42
0.057
1
8270D
8/10/18 22:31
Naphthalene
BRL
mg/kg dry
0.42
0.067
1
8270D
8/10/18 22:31
Nitrobenzene
BRL
mg/kg dry
0.42
0.059
1
8270D
8/10/18 22:31
N-Nitroso-di-n-propylamine
BRL
mg/kg dry
0.42
0.066
1
8270D
8/10/18 22:31
N-Nitrosodiphenylamine
BRL
mg/kg dry
0.42
0.064
1
8270D
8/10/18 22:31
Pentachlorophenol
BRL
mg/kg dry
0.42
0.049
1
8270D
8/10/18 22:31
Phenanthrene
BRL
mg/kg dry
0.42
0.054
1
8270D
8/10/18 22:31
Phenol
BRL
mg/kg dry
0.42
0.062
1
8270D
8/10/18 22:31
Pyrene
BRL
mg/kg dry
0.42
0.055
1
8270D
8/10/18 22:31
Surrogate
Recovery
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
Control Limits
2,4,6-Tribromophenol
79 %
39-132
2-Fluorobiphenyl
75 %
44-115
2-Fluorophenol
76 %
35-115
Nitrobenzene-d5
63 %
37-122
Phenol-d5
72 %
34-121
Terphenyl-d14
77 %
54-127
Volatile Organic Compounds by GUMS
1,1,1,2-Tetrachloroethane BRL mg/kg dry 0.0028 0.00023 1 8260B 8/10/18 13:00 ANG P81-10159
1,1,1-Trichloroethane BRL mg/kg dry 0.0028 0.00014 1 8260B 8/10/18 13:00 ANG P81-10159
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 12 of 43

` Full -Service Analytical &
/ environmental Solutions
P R S M
LABORATORIES INC.
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Laboratory Report
11/13/2018
Client Sample ID: SW-2
Prism Sample ID: 8080158-03
Prism Work Order: 8080158
Time Collected: 08/09/18 07:53
Time Submitted: 08/09/18 09:10
Parameter
Result
Units
Report
MDL
Dilution
Method
Analysis Analyst
Batch
Limit
Factor
Date/Time
ID
1,1,2,2-TetrachIoroethane
BRL
mg/kg dry
0.0028
0.00019
1
8260B
8/10/18 13:00
ANG
P81-10159
1,1,2-Trichloroethane
BRL
mg/kg dry
0.0028
0.00025
1
8260B
8/10/18 13:00
ANG
P81-10159
1,1-Dichloroethane
BRL
mg/kg dry
0.0028
0.000078
1
8260B
8/10/18 13:00
ANG
P81-10159
1,1-Dichloroethylene
BRL
mg/kg dry
0.0028
0.00012
1
8260B
8/10/18 13:00
ANG
P81-10159
1,1-Dichloropropylene
BRL
mg/kg dry
0.0028
0.00015
1
8260B
8/10/18 13:00
ANG
P81-10159
1,2,3-Trichlorobenzene
BRL
mg/kg dry
0.0028
0.00016
1
8260B
8/10/18 13:00
ANG
P81-10159
1,2,3-Trichloropropane
BRL
mg/kg dry
0.0028
0.00036
1
8260B
8/10/18 13:00
ANG
P81-10159
1,2,4-Trichlorobenzene
BRL
mg/kg dry
0.0028
0.00021
1
8260B
8/10/18 13:00
ANG
P81-10159
1,2,4-Trimethyl benzene
BRL
mg/kg dry
0.0028
0.00021
1
8260B
8/10/18 13:00
ANG
P81-10159
1,2-Dibromoethane
BRL
mg/kg dry
0.0028
0.00011
1
8260B
8/10/18 13:00
ANG
P81-10159
1,2-Dichlorobenzene
BRL
mg/kg dry
0.0028
0.00013
1
8260B
8/10/18 13:00
ANG
P81-10159
1,2-Dichloroethane
BRL
mg/kg dry
0.0028
0.00017
1
8260B
8/10/18 13:00
ANG
P81-10159
1,2-Dichloropropane
BRL
mg/kg dry
0.0028
0.00017
1
8260B
8/10/18 13:00
ANG
P81-10159
1,3,5-Trimethyl benzene
BRL
mg/kg dry
0.0028
0.00021
1
8260B
8/10/18 13:00
ANG
P81-10159
1,3-Dichlorobenzene
BRL
mg/kg dry
0.0028
0.00019
1
8260B
8/10/18 13:00
ANG
P81-10159
1,3-Dichloropropane
BRL
mg/kg dry
0.0028
0.00014
1
8260B
8/10/18 13:00
ANG
P81-10159
1,4-Dichlorobenzene
BRL
mg/kg dry
0.0028
0.00011
1
8260B
8/10/18 13:00
ANG
P81-10159
2,2-Dichloropropane
BRL
mg/kg dry
0.0028
0.00013
1
8260B
8/10/18 13:00
ANG
P81-10159
2-Chlorotoluene
BRL
mg/kg dry
0.0028
0.00014
1
8260B
8/10/18 13:00
ANG
P81-10159
4-Chlorotoluene
BRL
mg/kg dry
0.0028
0.00017
1
8260B
8/10/18 13:00
ANG
P81-10159
4-Isopropyltoluene
BRL
mg/kg dry
0.0028
0.00013
1
8260B
8/10/18 13:00
ANG
P81-10159
Acetone
0.018
J mg/kg dry
0.028
0.00068
1
8260B
8/10/18 13:00
ANG
P8H0159
Benzene
BRL
mg/kg dry
0.0017
0.00016
1
8260B
8/10/18 13:00
ANG
P81-10159
Bromobenzene
BRL
mg/kg dry
0.0028
0.00023
1
8260B
8/10/18 13:00
ANG
P81-10159
Bromochloromethane
BRL
mg/kg dry
0.0028
0.00015
1
8260B
8/10/18 13:00
ANG
P81-10159
Bromodichloromethane
BRL
mg/kg dry
0.0028
0.00016
1
8260B
8/10/18 13:00
ANG
P81-10159
Bromoform
BRL
mg/kg dry
0.0028
0.00032
1
8260B
8/10/18 13:00
ANG
P81-10159
Bromomethane
BRL
mg/kg dry
0.0056
0.00035
1
8260B
8/10/18 13:00
ANG
P81-10159
Carbon Tetrachloride
BRL
mg/kg dry
0.0028
0.00014
1
8260B
8/10/18 13:00
ANG
P81-10159
Chlorobenzene
BRL
mg/kg dry
0.0028
0.00015
1
8260B
8/10/18 13:00
ANG
P81-10159
Chloroethane
BRL
mg/kg dry
0.0056
0.00023
1
8260B
8/10/18 13:00
ANG
P81-10159
Chloroform
BRL
mg/kg dry
0.0028
0.00020
1
8260B
8/10/18 13:00
ANG
P81-10159
Chloromethane
BRL
mg/kg dry
0.0028
0.00019
1
8260B
8/10/18 13:00
ANG
P81-10159
cis-1,2-Dichloroethylene
BRL
mg/kg dry
0.0028
0.00012
1
8260B
8/10/18 13:00
ANG
P81-10159
cis-1,3-Dichloropropylene
BRL
mg/kg dry
0.0028
0.000094
1
8260B
8/10/18 13:00
ANG
P81-10159
Dibromochloromethane
BRL
mg/kg dry
0.0028
0.00012
1
8260B
8/10/18 13:00
ANG
P81-10159
Dichlorodifluoromethane
BRL
mg/kg dry
0.0028
0.00013
1
8260B
8/10/18 13:00
ANG
P81-10159
Ethylbenzene
BRL
mg/kg dry
0.0028
0.00011
1
8260B
8/10/18 13:00
ANG
P81-10159
Isopropyl Ether
BRL
mg/kg dry
0.0028
0.00011
1
8260B
8/10/18 13:00
ANG
P81-10159
Isopropylbenzene (Cumene)
BRL
mg/kg dry
0.0028
0.00017
1
8260B
8/10/18 13:00
ANG
P81-10159
m,p-Xylenes
BRL
mg/kg dry
0.0056
0.00026
1
8260B
8/10/18 13:00
ANG
P81-10159
Methyl Butyl Ketone (2-Hexanone)
BRL
mg/kg dry
0.028
0.00025
1
8260B
8/10/18 13:00
ANG
P81-10159
Methyl Ethyl Ketone (2-Butanone)
BRL
mg/kg dry
0.056
0.00025
1
8260B
8/10/18 13:00
ANG
P81-10159
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 13 of 43

P R S M Laboratory Report
` Full -Service Analytical &
/ Environmental Solutions 11/13/2018
LABORATORIES INC.
NOVA Engineering & Environmental Project: PreGel (Concord, NC) Client Sample ID: SW-2
Attn: David Penalva Prism Sample ID: 8080158-03
5104 Reagan Drive Suite 8 Prism Work Order: 8080158
Charlotte, NC 28206 Sample Matrix: Solid Time Collected: 08/09/18 07:53
Time Submitted: 08/09/18 09:10
Parameter
Result
Units
Report
MDL Dilution
Method
Analysis
Analyst
Batch
Limit
Factor
Date/Time
ID
Methyl Isobutyl Ketone
BRL
mg/kg dry
0.028
0.00024
1
8260B
8/10/18 13:00
ANG
P81-10159
Methylene Chloride
BRL
mg/kg dry
0.0056
0.00016
1
8260B
8/10/18 13:00
ANG
P81-10159
Methyl-tert-Butyl Ether
BRL
mg/kg dry
0.0056
0.000090
1
8260B
8/10/18 13:00
ANG
P81-10159
Naphthalene
BRL
mg/kg dry
0.0056
0.000088
1
8260B
8/10/18 13:00
ANG
P81-10159
n-Butylbenzene
BRL
mg/kg dry
0.0028
0.00014
1
8260B
8/10/18 13:00
ANG
P81-10159
n-Propylbenzene
BRL
mg/kg dry
0.0028
0.00017
1
8260B
8/10/18 13:00
ANG
P81-10159
o-Xylene
BRL
mg/kg dry
0.0028
0.00011
1
8260B
8/10/18 13:00
ANG
P81-10159
sec-Butylbenzene
BRL
mg/kg dry
0.0028
0.00014
1
8260B
8/10/18 13:00
ANG
P81-10159
Styrene
BRL
mg/kg dry
0.0028
0.00017
1
8260B
8/10/18 13:00
ANG
P81-10159
tert-Butylbenzene
BRL
mg/kg dry
0.0028
0.000095
1
8260B
8/10/18 13:00
ANG
P81-10159
Tetrachloroethylene
BRL
mg/kg dry
0.0028
0.00013
1
8260B
8/10/18 13:00
ANG
P81-10159
Toluene
BRL
mg/kg dry
0.0028
0.00016
1
8260B
8/10/18 13:00
ANG
P81-10159
trans-1,2-Dichloroethylene
BRL
mg/kg dry
0.0028
0.00017
1
8260B
8/10/18 13:00
ANG
P81-10159
trans-1,3-Dichloropropylene
BRL
mg/kg dry
0.0028
0.00015
1
8260B
8/10/18 13:00
ANG
P81-10159
Trichloroethylene
BRL
mg/kg dry
0.0028
0.00018
1
8260B
8/10/18 13:00
ANG
P81-10159
Trichlorofluoromethane
BRL
mg/kg dry
0.0028
0.00018
1
8260B
8/10/18 13:00
ANG
P81-10159
Vinyl acetate
BRL
mg/kg dry
0.014
0.00038
1
8260B
8/10/18 13:00
ANG
P81-10159
Vinyl chloride
BRL
mg/kg dry
0.0028
0.00014
1
8260B
8/10/18 13:00
ANG
P81-10159
Xylenes, total
BRL
mg/kg dry
0.0084
0.00052
1
8260B
8/10/18 13:00
ANG
P81-10159
Surrogate
Recovery
Control Limits
4-Bromofluorobenzene
99 %
70-130
Dibromofluoromethane
106 %
84-123
Toluene-d8
99 %
76-129
Volatile Petroleum Hydrocarbons
by GC/PID/FID
C5-C8 Aliphatics
BRL
mg/kg dry
8.6
0.28
100
MADEP VPH 8/13/18 15:33
ANG/J
P81-10190
C9-Cl2 Aliphatics
BRL
mg/kg dry
8.6
0.45
100
MADEP VPH
8/13/18 15:33
ANG/J
P81-10190
C9-Cl0 Aromatics
BRL
mg/kg dry
8.6
0.097
100
MADEP VPH
8/13/18 15:33
ANG/J
P81-10190
Surrogate
Recovery
Control Limits
2,5-Dibromotoluene (PID)
129 %
70-130
2,5-Dibromotoluene
(FID)
127 %
70-130
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 14 of 43

PR I S M Full -Service Analytical Environmental Solutions
LABORATORIES INC.
Laboratory Report
11 /13/2018
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Client Sample ID: SW-3
Prism Sample ID: 8080158-04
Prism Work Order: 8080158
Time Collected: 08/09/18 08:05
Time Submitted: 08/09/18 09:10
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor Date/Time ID
Extractable Petroleum Hydrocarbons by GC/FID
C9-Cl8 Aliphatics BRL
mg/kg dry
33 0.21 1
MADEP EPH 8/21/18
0:07 ZRC P81-10270
C19-C36 Aliphatics BRL
mg/kg dry
33 3.9 1
MADEP EPH 8/21/18
0:07 ZRC P81-10270
C11-C22 Aromatics BRL
mg/kg dry
13 2.4 1
MADEP EPH 8/21/18
0:07 ZRC P81-10270
Surrogate
Recovery
Control Limits
1-Chlorooctadecane
87 %
40-140
o-Terphenyl
83 %
40-140
2-Fluorobiphenyl
87 %
40-140
2-Bromonaphthalene
87 %
40-140
General Chemistry Parameters
% Solids 75.4
Semivolatile Organic Compounds by GC/MS
% by
Weight
0.100
0.100
1
"SM2540 G
8/13/18 14:50
TJY
P8H0206
1,2,4-Trichlorobenzene
BRL
mg/kg dry
0.44
0.068
1
8270D
8/10/18 22:54
JMV
P81-10146
1,2-Dichlorobenzene
BRL
mg/kg dry
0.44
0.066
1
8270D
8/10/18 22:54
JMV
P81-10146
1,3-Dichlorobenzene
BRL
mg/kg dry
0.44
0.062
1
8270D
8/10/18 22:54
JMV
P81-10146
1,4-Dichlorobenzene
BRL
mg/kg dry
0.44
0.064
1
8270D
8/10/18 22:54
JMV
P81-10146
1-Methyl naphthalene
BRL
mg/kg dry
0.44
0.084
1
8270D
8/10/18 22:54
JMV
P81-10146
2,4,6-Trichlorophenol
BRL
mg/kg dry
0.44
0.082
1
8270D
8/10/18 22:54
JMV
P81-10146
2,4-Dichlorophenol
BRL
mg/kg dry
0.44
0.085
1
8270D
8/10/18 22:54
JMV
P81-10146
2,4-Dimethylphenol
BRL
mg/kg dry
0.44
0.067
1
8270D
8/10/18 22:54
JMV
P81-10146
2,4-Dinitrophenol
BRL
mg/kg dry
0.44
0.061
1
8270D
8/10/18 22:54
JMV
P81-10146
2,4-Dinitrotoluene
BRL
mg/kg dry
0.44
0.053
1
8270D
8/10/18 22:54
JMV
P81-10146
2,6-Dinitrotoluene
BRL
mg/kg dry
0.44
0.058
1
8270D
8/10/18 22:54
JMV
P81-10146
2-Chloronaphthalene
BRL
mg/kg dry
0.44
0.063
1
8270D
8/10/18 22:54
JMV
P81-10146
2-Chlorophenol
BRL
mg/kg dry
0.44
0.062
1
8270D
8/10/18 22:54
JMV
P81-10146
2-Methyl naphthalene
BRL
mg/kg dry
0.44
0.070
1
8270D
8/10/18 22:54
JMV
P81-10146
2-Methylphenol
BRL
mg/kg dry
0.44
0.056
1
8270D
8/10/18 22:54
JMV
P81-10146
2-Nitrophenol
BRL
mg/kg dry
0.44
0.080
1
8270D
8/10/18 22:54
JMV
P81-10146
3,3'-Dichlorobenzidine
BRL
mg/kg dry
0.44
0.086
1
8270D
8/10/18 22:54
JMV
P81-10146
3/4-Methyl phenol
BRL
mg/kg dry
0.44
0.054
1
8270D
8/10/18 22:54
JMV
P81-10146
4,6-Dinitro-2-methylphenol
BRL
mg/kg dry
0.44
0.066
1
8270D
8/10/18 22:54
JMV
P81-10146
4-Bromophenyl phenyl ether
BRL
mg/kg dry
0.44
0.075
1
8270D
8/10/18 22:54
JMV
P81-10146
4-Chloro-3-methylphenol
BRL
mg/kg dry
0.44
0.061
1
8270D
8/10/18 22:54
JMV
P81-10146
4-Chloroaniline
BRL
mg/kg dry
0.44
0.053
1
8270D
8/10/18 22:54
JMV
P81-10146
4-Chlorophenyl phenyl ether
BRL
mg/kg dry
0.44
0.057
1
8270D
8/10/18 22:54
JMV
P81-10146
4-Nitrophenol
BRL
mg/kg dry
0.44
0.067
1
8270D
8/10/18 22:54
JMV
P81-10146
Acenaphthene
BRL
mg/kg dry
0.44
0.060
1
8270D
8/10/18 22:54
JMV
P81-10146
Acenaphthylene
BRL
mg/kg dry
0.44
0.063
1
8270D
8/10/18 22:54
JMV
P81-10146
Anthracene
BRL
mg/kg dry
0.44
0.071
1
8270D
8/10/18 22:54
JMV
P81-10146
Azobenzene
BRL
mg/kg dry
0.44
0.058
1
8270D
8/10/18 22:54
JMV
P81-10146
Benzo(a)anthracene
BRL
mg/kg dry
0.44
0.057
1
8270D
8/10/18 22:54
JMV
P81-10146
Benzo(a)pyrene
BRL
mg/kg dry
0.44
0.047
1
8270D
8/10/18 22:54
JMV
P81-10146
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 15 of 43

PR I S M Full -Service Analytical Environmental Solutions
LABORATORIES INC.
Laboratory Report
11 /13/2018
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Client Sample ID: SW-3
Prism Sample ID: 8080158-04
Prism Work Order: 8080158
Time Collected: 08/09/18 08:05
Time Submitted: 08/09/18 09:10
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor Date/Time ID
Benzo(b)fluoranthene
BRL
mg/kg dry
0.44
0.051
1
8270D
8/10/18 22:54
Benzo(g,h,i)perylene
BRL
mg/kg dry
0.44
0.048
1
8270D
8/10/18 22:54
Benzo(k)fluoranthene
BRL
mg/kg dry
0.44
0.057
1
8270D
8/10/18 22:54
Benzoic Acid
BRL
mg/kg dry
0.44
0.037
1
8270D
8/10/18 22:54
Benzyl alcohol
BRL
mg/kg dry
0.44
0.058
1
8270D
8/10/18 22:54
bis(2-Chloroethoxy)methane
BRL
mg/kg dry
0.44
0.076
1
8270D
8/10/18 22:54
Bis(2-Chloroethyl)ether
BRL
mg/kg dry
0.44
0.062
1
8270D
8/10/18 22:54
Bis(2-chloroisopropyl)ether
BRL
mg/kg dry
0.44
0.075
1
8270D
8/10/18 22:54
Bis(2-Ethylhexyl)phthalate
BRL
mg/kg dry
0.44
0.065
1
8270D
8/10/18 22:54
Butyl benzyl phthalate
BRL
mg/kg dry
0.44
0.062
1
8270D
8/10/18 22:54
Chrysene
BRL
mg/kg dry
0.44
0.055
1
8270D
8/10/18 22:54
Dibenzo(a,h)anthracene
BRL
mg/kg dry
0.44
0.053
1
8270D
8/10/18 22:54
Dibenzofuran
BRL
mg/kg dry
0.44
0.067
1
8270D
8/10/18 22:54
Diethyl phthalate
BRL
mg/kg dry
0.44
0.060
1
8270D
8/10/18 22:54
Dimethyl phthalate
BRL
mg/kg dry
0.44
0.058
1
8270D
8/10/18 22:54
Di-n-butyl phthalate
BRL
mg/kg dry
0.44
0.062
1
8270D
8/10/18 22:54
Di-n-octyl phthalate
BRL
mg/kg dry
0.44
0.054
1
8270D
8/10/18 22:54
Fluoranthene
BRL
mg/kg dry
0.44
0.056
1
8270D
8/10/18 22:54
Fluorene
BRL
mg/kg dry
0.44
0.063
1
8270D
8/10/18 22:54
Hexachlorobenzene
BRL
mg/kg dry
0.44
0.069
1
8270D
8/10/18 22:54
Hexachlorobutadiene
BRL
mg/kg dry
0.44
0.079
1
8270D
8/10/18 22:54
Hexachlorocyclopentadiene
BRL
mg/kg dry
0.44
0.078
1
8270D
8/10/18 22:54
Hexachloroethane
BRL
mg/kg dry
0.44
0.073
1
8270D
8/10/18 22:54
Indeno(1,2,3-cd)pyrene
BRL
mg/kg dry
0.44
0.050
1
8270D
8/10/18 22:54
Isophorone
BRL
mg/kg dry
0.44
0.059
1
8270D
8/10/18 22:54
Naphthalene
BRL
mg/kg dry
0.44
0.070
1
8270D
8/10/18 22:54
Nitrobenzene
BRL
mg/kg dry
0.44
0.062
1
8270D
8/10/18 22:54
N-Nitroso-di-n-propylamine
BRL
mg/kg dry
0.44
0.069
1
8270D
8/10/18 22:54
N-Nitrosodiphenylamine
BRL
mg/kg dry
0.44
0.067
1
8270D
8/10/18 22:54
Pentachlorophenol
BRL
mg/kg dry
0.44
0.052
1
8270D
8/10/18 22:54
Phenanthrene
BRL
mg/kg dry
0.44
0.057
1
8270D
8/10/18 22:54
Phenol
BRL
mg/kg dry
0.44
0.065
1
8270D
8/10/18 22:54
Pyrene
BRL
mg/kg dry
0.44
0.058
1
8270D
8/10/18 22:54
Surrogate
Recovery
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
JMV P81-10146
Control Limits
2,4,6-Tribromophenol
82 %
39-132
2-Fluorobiphenyl
77 %
44-115
2-Fluorophenol
80 %
35-115
Nitrobenzene-d5
66 %
37-122
Phenol-d5
73 %
34-121
Terphenyl-d14
79 %
54-127
Volatile Organic Compounds by GUMS A, BC
1,1,1,2-Tetrachloroethane BRL mg/kg dry 0.0067 0.00055 1 8260B 8/10/18 13:28 ANG P81-10159
1,1,1-Trichloroethane BRL mg/kg dry 0.0067 0.00032 1 8260B 8/10/18 13:28 ANG P81-10159
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 16 of 43

` Full -Service Analytical &
/ environmental Solutions
P R S M
LABORATORIES INC.
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Laboratory Report
11/13/2018
Client Sample ID: SW-3
Prism Sample ID: 8080158-04
Prism Work Order: 8080158
Time Collected: 08/09/18 08:05
Time Submitted: 08/09/18 09:10
Parameter
Result
Units
Report
MDL
Dilution
Method
Analysis Analyst
Batch
Limit
Factor
Date/Time
ID
1,1,2,2-TetrachIoroethane
BRL
mg/kg dry
0.0067
0.00045
1
8260B
8/10/18 13:28
ANG
P81-10159
1,1,2-Trichloroethane
BRL
mg/kg dry
0.0067
0.00059
1
8260B
8/10/18 13:28
ANG
P81-10159
1,1-Dichloroethane
BRL
mg/kg dry
0.0067
0.00019
1
8260B
8/10/18 13:28
ANG
P81-10159
1,1-Dichloroethylene
BRL
mg/kg dry
0.0067
0.00030
1
8260B
8/10/18 13:28
ANG
P81-10159
1,1-Dichloropropylene
BRL
mg/kg dry
0.0067
0.00037
1
8260B
8/10/18 13:28
ANG
P81-10159
1,2,3-Trichlorobenzene
BRL
mg/kg dry
0.0067
0.00038
1
8260B
8/10/18 13:28
ANG
P81-10159
1,2,3-Trichloropropane
BRL
mg/kg dry
0.0067
0.00085
1
8260B
8/10/18 13:28
ANG
P81-10159
1,2,4-Trichlorobenzene
BRL
mg/kg dry
0.0067
0.00050
1
8260B
8/10/18 13:28
ANG
P81-10159
1,2,4-Trimethyl benzene
BRL
mg/kg dry
0.0067
0.00051
1
8260B
8/10/18 13:28
ANG
P81-10159
1,2-Dibromoethane
BRL
mg/kg dry
0.0067
0.00027
1
8260B
8/10/18 13:28
ANG
P81-10159
1,2-Dichlorobenzene
BRL
mg/kg dry
0.0067
0.00031
1
8260B
8/10/18 13:28
ANG
P81-10159
1,2-Dichloroethane
BRL
mg/kg dry
0.0067
0.00040
1
8260B
8/10/18 13:28
ANG
P81-10159
1,2-Dichloropropane
BRL
mg/kg dry
0.0067
0.00041
1
8260B
8/10/18 13:28
ANG
P81-10159
1,3,5-Trimethyl benzene
BRL
mg/kg dry
0.0067
0.00051
1
8260B
8/10/18 13:28
ANG
P81-10159
1,3-Dichlorobenzene
BRL
mg/kg dry
0.0067
0.00044
1
8260B
8/10/18 13:28
ANG
P81-10159
1,3-Dichloropropane
BRL
mg/kg dry
0.0067
0.00034
1
8260B
8/10/18 13:28
ANG
P81-10159
1,4-Dichlorobenzene
BRL
mg/kg dry
0.0067
0.00026
1
8260B
8/10/18 13:28
ANG
P81-10159
2,2-Dichloropropane
BRL
mg/kg dry
0.0067
0.00032
1
8260B
8/10/18 13:28
ANG
P81-10159
2-Chlorotoluene
BRL
mg/kg dry
0.0067
0.00035
1
8260B
8/10/18 13:28
ANG
P81-10159
4-Chlorotoluene
BRL
mg/kg dry
0.0067
0.00040
1
8260B
8/10/18 13:28
ANG
P81-10159
4-Isopropyltoluene
BRL
mg/kg dry
0.0067
0.00032
1
8260B
8/10/18 13:28
ANG
P81-10159
Acetone
BRL
mg/kg dry
0.067
0.0016
1
8260B
8/10/18 13:28
ANG
P81-10159
Benzene
BRL
mg/kg dry
0.0040
0.00039
1
8260B
8/10/18 13:28
ANG
P81-10159
Bromobenzene
BRL
mg/kg dry
0.0067
0.00056
1
8260B
8/10/18 13:28
ANG
P81-10159
Bromochloromethane
BRL
mg/kg dry
0.0067
0.00037
1
8260B
8/10/18 13:28
ANG
P81-10159
Bromodichloromethane
BRL
mg/kg dry
0.0067
0.00037
1
8260B
8/10/18 13:28
ANG
P81-10159
Bromoform
BRL
mg/kg dry
0.0067
0.00076
1
8260B
8/10/18 13:28
ANG
P81-10159
Bromomethane
BRL
mg/kg dry
0.013
0.00083
1
8260B
8/10/18 13:28
ANG
P81-10159
Carbon Tetrachloride
BRL
mg/kg dry
0.0067
0.00033
1
8260B
8/10/18 13:28
ANG
P81-10159
Chlorobenzene
BRL
mg/kg dry
0.0067
0.00035
1
8260B
8/10/18 13:28
ANG
P81-10159
Chloroethane
BRL
mg/kg dry
0.013
0.00056
1
8260B
8/10/18 13:28
ANG
P81-10159
Chloroform
BRL
mg/kg dry
0.0067
0.00048
1
8260B
8/10/18 13:28
ANG
P81-10159
Chloromethane
BRL
mg/kg dry
0.0067
0.00045
1
8260B
8/10/18 13:28
ANG
P81-10159
cis-1,2-Dichloroethylene
BRL
mg/kg dry
0.0067
0.00028
1
8260B
8/10/18 13:28
ANG
P81-10159
cis-1,3-Dichloropropylene
BRL
mg/kg dry
0.0067
0.00022
1
8260B
8/10/18 13:28
ANG
P81-10159
Dibromochloromethane
BRL
mg/kg dry
0.0067
0.00028
1
8260B
8/10/18 13:28
ANG
P81-10159
Dichlorodifluoromethane
BRL
mg/kg dry
0.0067
0.00030
1
8260B
8/10/18 13:28
ANG
P81-10159
Ethylbenzene
BRL
mg/kg dry
0.0067
0.00026
1
8260B
8/10/18 13:28
ANG
P81-10159
Isopropyl Ether
BRL
mg/kg dry
0.0067
0.00027
1
8260B
8/10/18 13:28
ANG
P81-10159
Isopropylbenzene (Cumene)
BRL
mg/kg dry
0.0067
0.00040
1
8260B
8/10/18 13:28
ANG
P81-10159
m,p-Xylenes
BRL
mg/kg dry
0.013
0.00062
1
8260B
8/10/18 13:28
ANG
P81-10159
Methyl Butyl Ketone (2-Hexanone)
BRL
mg/kg dry
0.067
0.00060
1
8260B
8/10/18 13:28
ANG
P81-10159
Methyl Ethyl Ketone (2-Butanone)
BRL
mg/kg dry
0.13
0.00060
1
8260B
8/10/18 13:28
ANG
P81-10159
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 17 of 43

P R S M Laboratory Report
` Full -Service Analytical &
/ Environmental Solutions 11/13/2018
LABORATORIES INC.
NOVA Engineering & Environmental Project: PreGel (Concord, NC) Client Sample ID: SW-3
Attn: David Penalva Prism Sample ID: 8080158-04
5104 Reagan Drive Suite 8 Prism Work Order: 8080158
Charlotte, NC 28206 Sample Matrix: Solid Time Collected: 08/09/18 08:05
Time Submitted: 08/09/18 09:10
Parameter
Result
Units
Report
Limit
MDL
Dilution
Factor
Method
Analysis
Date/Time
Analyst
Batch
ID
Methyl Isobutyl Ketone
BRL
mg/kg dry
0.067
0.00057
1
8260B
8/10/18 13:28
ANG
P81-10159
Methylene Chloride
0.016
mg/kg dry
0.013
0.00038
1
8260B
8/10/18 13:28
ANG
P8H0159
Methyl-tert-Butyl Ether
BRL
mg/kg dry
0.013
0.00021
1
8260B
8/10/18 13:28
ANG
P81-10159
Naphthalene
BRL
mg/kg dry
0.013
0.00021
1
8260B
8/10/18 13:28
ANG
P81-10159
n-Butylbenzene
BRL
mg/kg dry
0.0067
0.00034
1
8260B
8/10/18 13:28
ANG
P81-10159
n-Propylbenzene
BRL
mg/kg dry
0.0067
0.00040
1
8260B
8/10/18 13:28
ANG
P81-10159
o-Xylene
BRL
mg/kg dry
0.0067
0.00027
1
8260B
8/10/18 13:28
ANG
P81-10159
sec-Butylbenzene
BRL
mg/kg dry
0.0067
0.00032
1
8260B
8/10/18 13:28
ANG
P81-10159
Styrene
BRL
mg/kg dry
0.0067
0.00040
1
8260B
8/10/18 13:28
ANG
P81-10159
tert-Butylbenzene
BRL
mg/kg dry
0.0067
0.00023
1
8260B
8/10/18 13:28
ANG
P81-10159
Tetrachloroethylene
BRL
mg/kg dry
0.0067
0.00032
1
8260B
8/10/18 13:28
ANG
P81-10159
Toluene
BRL
mg/kg dry
0.0067
0.00038
1
8260B
8/10/18 13:28
ANG
P81-10159
trans-1,2-Dichloroethylene
BRL
mg/kg dry
0.0067
0.00040
1
8260B
8/10/18 13:28
ANG
P81-10159
trans-1,3-Dichloropropylene
BRL
mg/kg dry
0.0067
0.00035
1
8260B
8/10/18 13:28
ANG
P81-10159
Trichloroethylene
BRL
mg/kg dry
0.0067
0.00043
1
8260B
8/10/18 13:28
ANG
P81-10159
Trichlorofluoromethane
BRL
mg/kg dry
0.0067
0.00043
1
8260B
8/10/18 13:28
ANG
P81-10159
Vinyl acetate
BRL
mg/kg dry
0.033
0.00092
1
8260B
8/10/18 13:28
ANG
P81-10159
Vinyl chloride
BRL
mg/kg dry
0.0067
0.00032
1
8260B
8/10/18 13:28
ANG
P81-10159
Xylenes, total
BRL
mg/kg dry
0.020
0.0013
1
8260B
8/10/18 13:28
ANG
P81-10159
Surrogate
Recovery
Control Limits
4-Bromofluorobenzene
100 %
70-130
Dibromofluoromethane
105 %
84-123
Toluene-d8
99 %
76-129
Volatile Petroleum Hydrocarbons by GC/PID/FID
RLM
C5-C8 Aliphatics BRL mg/kg dry
5.8 0.19 100
MADEP VPH 8/13/18 16:01
ANG/J
P81-10190
C9-Cl2 Aliphatics BRL mg/kg dry
5.8 0.30 100
MADEP VPH 8/13/18 16:01
ANG/J
P81-10190
C9-Cl0 Aromatics BRL mg/kg dry
5.8 0.065 100
MADEP VPH 8/13/18 16:01
ANG/J
P81-10190
Surrogate
Recovery
Control Limits
2,5-Dibromotoluene (PID)
153 %
70-130
SR
2,5-Dibromotoluene (FID)
152 %
70-130
SR
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 18 of 43

PR I S M Full -Service Analytical Environmental Solutions
LABORATORIES INC.
Laboratory Report
11 /13/2018
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Client Sample ID: SW-4
Prism Sample ID: 8080158-05
Prism Work Order: 8080158
Time Collected: 08/09/18 08:15
Time Submitted: 08/09/18 09:10
Parameter Result Units Report MDL Dilution Method Analysis Analyst Batch
Limit Factor Date/Time ID
Extractable Petroleum Hydrocarbons by GC/FID
C9-Cl8 Aliphatics BRL
mg/kg dry
32 0.20 1
MADEP EPH 8/21/18
0:43 ZRC P81-10270
C19-C36 Aliphatics BRL
mg/kg dry
32 3.8 1
MADEP EPH 8/21/18
0:43 ZRC P81-10270
C11-C22 Aromatics BRL
mg/kg dry
13 2.3 1
MADEP EPH 8/21/18
0:43 ZRC P81-10270
Surrogate
Recovery
Control Limits
1-Chlorooctadecane
91 %
40-140
o-Terphenyl
95 %
40-140
2-Fluorobiphenyl
88 %
40-140
2-Bromonaphthalene
84 %
40-140
General Chemistry Parameters
% Solids 77.7
Semivolatile Organic Compounds by GC/MS
% by
Weight
0.100
0.100
1
"SM2540 G
8/13/18 14:50
TJY
P8H0206
1,2,4-Trichlorobenzene
BRL
mg/kg dry
0.42
0.066
1
8270D
8/10/18 23:17
JMV
P81-10146
1,2-Dichlorobenzene
BRL
mg/kg dry
0.42
0.064
1
8270D
8/10/18 23:17
JMV
P81-10146
1,3-Dichlorobenzene
BRL
mg/kg dry
0.42
0.060
1
8270D
8/10/18 23:17
JMV
P81-10146
1,4-Dichlorobenzene
BRL
mg/kg dry
0.42
0.062
1
8270D
8/10/18 23:17
JMV
P81-10146
1-Methyl naphthalene
BRL
mg/kg dry
0.42
0.082
1
8270D
8/10/18 23:17
JMV
P81-10146
2,4,6-Trichlorophenol
BRL
mg/kg dry
0.42
0.079
1
8270D
8/10/18 23:17
JMV
P81-10146
2,4-Dichlorophenol
BRL
mg/kg dry
0.42
0.082
1
8270D
8/10/18 23:17
JMV
P81-10146
2,4-Dimethylphenol
BRL
mg/kg dry
0.42
0.065
1
8270D
8/10/18 23:17
JMV
P81-10146
2,4-Dinitrophenol
BRL
mg/kg dry
0.42
0.059
1
8270D
8/10/18 23:17
JMV
P81-10146
2,4-Dinitrotoluene
BRL
mg/kg dry
0.42
0.051
1
8270D
8/10/18 23:17
JMV
P81-10146
2,6-Dinitrotoluene
BRL
mg/kg dry
0.42
0.056
1
8270D
8/10/18 23:17
JMV
P81-10146
2-Chloronaphthalene
BRL
mg/kg dry
0.42
0.061
1
8270D
8/10/18 23:17
JMV
P81-10146
2-Chlorophenol
BRL
mg/kg dry
0.42
0.060
1
8270D
8/10/18 23:17
JMV
P81-10146
2-Methyl naphthalene
BRL
mg/kg dry
0.42
0.068
1
8270D
8/10/18 23:17
JMV
P81-10146
2-Methylphenol
BRL
mg/kg dry
0.42
0.054
1
8270D
8/10/18 23:17
JMV
P81-10146
2-Nitrophenol
BRL
mg/kg dry
0.42
0.077
1
8270D
8/10/18 23:17
JMV
P81-10146
3,3'-Dichlorobenzidine
BRL
mg/kg dry
0.42
0.084
1
8270D
8/10/18 23:17
JMV
P81-10146
3/4-Methyl phenol
BRL
mg/kg dry
0.42
0.052
1
8270D
8/10/18 23:17
JMV
P81-10146
4,6-Dinitro-2-methylphenol
BRL
mg/kg dry
0.42
0.064
1
8270D
8/10/18 23:17
JMV
P81-10146
4-Bromophenyl phenyl ether
BRL
mg/kg dry
0.42
0.073
1
8270D
8/10/18 23:17
JMV
P81-10146
4-Chloro-3-methylphenol
BRL
mg/kg dry
0.42
0.059
1
8270D
8/10/18 23:17
JMV
P81-10146
4-Chloroaniline
BRL
mg/kg dry
0.42
0.051
1
8270D
8/10/18 23:17
JMV
P81-10146
4-Chlorophenyl phenyl ether
BRL
mg/kg dry
0.42
0.055
1
8270D
8/10/18 23:17
JMV
P81-10146
4-Nitrophenol
BRL
mg/kg dry
0.42
0.065
1
8270D
8/10/18 23:17
JMV
P81-10146
Acenaphthene
BRL
mg/kg dry
0.42
0.058
1
8270D
8/10/18 23:17
JMV
P81-10146
Acenaphthylene
BRL
mg/kg dry
0.42
0.061
1
8270D
8/10/18 23:17
JMV
P81-10146
Anthracene
BRL
mg/kg dry
0.42
0.068
1
8270D
8/10/18 23:17
JMV
P81-10146
Azobenzene
BRL
mg/kg dry
0.42
0.056
1
8270D
8/10/18 23:17
JMV
P81-10146
Benzo(a)anthracene
BRL
mg/kg dry
0.42
0.055
1
8270D
8/10/18 23:17
JMV
P81-10146
Benzo(a)pyrene
BRL
mg/kg dry
0.42
0.046
1
8270D
8/10/18 23:17
JMV
P81-10146
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 19 of 43

Laboratory Report
` Full -Service Analytical &
/ environmental Solutions
P R S M
LABORATORIES INC.
11/13/2018
NOVA Engineering & Environmental
Project: PreGel (Concord, NC)
Client Sample ID: SW-4
Attn: David Penalva
Prism Sample ID: 8080158-05
5104 Reagan Drive Suite 8
Prism Work Order:
8080158
Charlotte, NC 28206
Sample Matrix: Solid
Time Collected:
08/09/18 08:15
Time Submitted:
08/09/18 09:10
Parameter
Result
Units
Report
MDL
Dilution
Method
Analysis Analyst
Batch
Limit
Factor
Date/Time
ID
Benzo(b)fluoranthene
BRL
mg/kg dry
0.42
0.049
1
8270D
8/10/18 23:17
JMV
P81-10146
Benzo(g,h,i)perylene
BRL
mg/kg dry
0.42
0.046
1
8270D
8/10/18 23:17
JMV
P81-10146
Benzo(k)fluoranthene
BRL
mg/kg dry
0.42
0.056
1
8270D
8/10/18 23:17
JMV
P81-10146
Benzoic Acid
0.50
mg/kg dry
0.42
0.036
1
8270D
8/10/18 23:17
JMV
P8H0146
Benzyl alcohol
BRL
mg/kg dry
0.42
0.056
1
8270D
8/10/18 23:17
JMV
P81-10146
bis(2-Chloroethoxy)methane
BRL
mg/kg dry
0.42
0.074
1
8270D
8/10/18 23:17
JMV
P81-10146
Bis(2-Chloroethyl)ether
BRL
mg/kg dry
0.42
0.060
1
8270D
8/10/18 23:17
JMV
P81-10146
Bis(2-chloroisopropyl)ether
BRL
mg/kg dry
0.42
0.072
1
8270D
8/10/18 23:17
JMV
P81-10146
Bis(2-Ethylhexyl)phthalate
BRL
mg/kg dry
0.42
0.063
1
8270D
8/10/18 23:17
JMV
P81-10146
Butyl benzyl phthalate
BRL
mg/kg dry
0.42
0.060
1
8270D
8/10/18 23:17
JMV
P81-10146
Chrysene
BRL
mg/kg dry
0.42
0.053
1
8270D
8/10/18 23:17
JMV
P81-10146
Dibenzo(a,h)anthracene
BRL
mg/kg dry
0.42
0.052
1
8270D
8/10/18 23:17
JMV
P81-10146
Dibenzofuran
BRL
mg/kg dry
0.42
0.064
1
8270D
8/10/18 23:17
JMV
P81-10146
Diethyl phthalate
BRL
mg/kg dry
0.42
0.058
1
8270D
8/10/18 23:17
JMV
P81-10146
Dimethyl phthalate
BRL
mg/kg dry
0.42
0.056
1
8270D
8/10/18 23:17
JMV
P81-10146
Di-n-butyl phthalate
BRL
mg/kg dry
0.42
0.060
1
8270D
8/10/18 23:17
JMV
P81-10146
Di-n-octyl phthalate
BRL
mg/kg dry
0.42
0.052
1
8270D
8/10/18 23:17
JMV
P81-10146
Fluoranthene
BRL
mg/kg dry
0.42
0.054
1
8270D
8/10/18 23:17
JMV
P81-10146
Fluorene
BRL
mg/kg dry
0.42
0.061
1
8270D
8/10/18 23:17
JMV
P81-10146
Hexachlorobenzene
BRL
mg/kg dry
0.42
0.067
1
8270D
8/10/18 23:17
JMV
P81-10146
Hexachlorobutadiene
BRL
mg/kg dry
0.42
0.076
1
8270D
8/10/18 23:17
JMV
P81-10146
Hexachlorocyclopentadiene
BRL
mg/kg dry
0.42
0.076
1
8270D
8/10/18 23:17
JMV
P81-10146
Hexachloroethane
BRL
mg/kg dry
0.42
0.071
1
8270D
8/10/18 23:17
JMV
P81-10146
Indeno(1,2,3-cd)pyrene
BRL
mg/kg dry
0.42
0.049
1
8270D
8/10/18 23:17
JMV
P81-10146
Isophorone
BRL
mg/kg dry
0.42
0.057
1
8270D
8/10/18 23:17
JMV
P81-10146
Naphthalene
BRL
mg/kg dry
0.42
0.068
1
8270D
8/10/18 23:17
JMV
P81-10146
Nitrobenzene
BRL
mg/kg dry
0.42
0.060
1
8270D
8/10/18 23:17
JMV
P81-10146
N-Nitroso-di-n-propylamine
BRL
mg/kg dry
0.42
0.067
1
8270D
8/10/18 23:17
JMV
P81-10146
N-Nitrosodiphenylamine
BRL
mg/kg dry
0.42
0.064
1
8270D
8/10/18 23:17
JMV
P81-10146
Pentachlorophenol
BRL
mg/kg dry
0.42
0.050
1
8270D
8/10/18 23:17
JMV
P81-10146
Phenanthrene
BRL
mg/kg dry
0.42
0.055
1
8270D
8/10/18 23:17
JMV
P81-10146
Phenol
BRL
mg/kg dry
0.42
0.063
1
8270D
8/10/18 23:17
JMV
P81-10146
Pyrene
BRL
mg/kg dry
0.42
0.056
1
8270D
8/10/18 23:17
JMV
P81-10146
Surrogate
Recovery
Control Limits
2,4,6-Tribromophenol
71 %
39-132
2-Fluorobiphenyl
68 %
44-115
2-Fluorophenol
71 %
35-115
Nitrobenzene-d5
60 %
37-122
Phenol-d5
65 %
34-121
Terphenyl-d14
74 %
54-127
Volatile Organic Compounds by GC/MS
1,1,1,2-Tetrachloroethane
BRL
mg/kg dry
0.0027
0.00022
1
8260B
8/10/18 13:55
ANG
P81-10159
1,1,1-Trichloroethane
BRL
mg/kg dry
0.0027
0.00013
1
8260B
8/10/18 13:55
ANG
P81-10159
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 20 of 43

` Full -Service Analytical &
/ environmental Solutions
P R S M
LABORATORIES INC.
NOVA Engineering & Environmental
Attn: David Penalva
5104 Reagan Drive Suite 8
Charlotte, NC 28206
Project: PreGel (Concord, NC)
Sample Matrix: Solid
Laboratory Report
11/13/2018
Client Sample ID: SW-4
Prism Sample ID: 8080158-05
Prism Work Order: 8080158
Time Collected: 08/09/18 08:15
Time Submitted: 08/09/18 09:10
Parameter
Result
Units
Report
MDL
Dilution
Method
Analysis Analyst
Batch
Limit
Factor
Date/Time
ID
1,1,2,2-TetrachIoroethane
BRL
mg/kg dry
0.0027
0.00018
1
8260B
8/10/18 13:55
ANG
P81-10159
1,1,2-Trichloroethane
BRL
mg/kg dry
0.0027
0.00024
1
8260B
8/10/18 13:55
ANG
P81-10159
1,1-Dichloroethane
BRL
mg/kg dry
0.0027
0.000074
1
8260B
8/10/18 13:55
ANG
P81-10159
1,1-Dichloroethylene
BRL
mg/kg dry
0.0027
0.00012
1
8260B
8/10/18 13:55
ANG
P81-10159
1,1-Dichloropropylene
BRL
mg/kg dry
0.0027
0.00015
1
8260B
8/10/18 13:55
ANG
P81-10159
1,2,3-Trichlorobenzene
BRL
mg/kg dry
0.0027
0.00015
1
8260B
8/10/18 13:55
ANG
P81-10159
1,2,3-Trichloropropane
BRL
mg/kg dry
0.0027
0.00034
1
8260B
8/10/18 13:55
ANG
P81-10159
1,2,4-Trichlorobenzene
BRL
mg/kg dry
0.0027
0.00020
1
8260B
8/10/18 13:55
ANG
P81-10159
1,2,4-Trimethyl benzene
BRL
mg/kg dry
0.0027
0.00020
1
8260B
8/10/18 13:55
ANG
P81-10159
1,2-Dibromoethane
BRL
mg/kg dry
0.0027
0.00011
1
8260B
8/10/18 13:55
ANG
P81-10159
1,2-Dichlorobenzene
BRL
mg/kg dry
0.0027
0.00013
1
8260B
8/10/18 13:55
ANG
P81-10159
1,2-Dichloroethane
BRL
mg/kg dry
0.0027
0.00016
1
8260B
8/10/18 13:55
ANG
P81-10159
1,2-Dichloropropane
BRL
mg/kg dry
0.0027
0.00017
1
8260B
8/10/18 13:55
ANG
P81-10159
1,3,5-Trimethyl benzene
BRL
mg/kg dry
0.0027
0.00020
1
8260B
8/10/18 13:55
ANG
P81-10159
1,3-Dichlorobenzene
BRL
mg/kg dry
0.0027
0.00018
1
8260B
8/10/18 13:55
ANG
P81-10159
1,3-Dichloropropane
BRL
mg/kg dry
0.0027
0.00013
1
8260B
8/10/18 13:55
ANG
P81-10159
1,4-Dichlorobenzene
BRL
mg/kg dry
0.0027
0.00011
1
8260B
8/10/18 13:55
ANG
P81-10159
2,2-Dichloropropane
BRL
mg/kg dry
0.0027
0.00013
1
8260B
8/10/18 13:55
ANG
P81-10159
2-Chlorotoluene
BRL
mg/kg dry
0.0027
0.00014
1
8260B
8/10/18 13:55
ANG
P81-10159
4-Chlorotoluene
BRL
mg/kg dry
0.0027
0.00016
1
8260B
8/10/18 13:55
ANG
P81-10159
4-Isopropyltoluene
BRL
mg/kg dry
0.0027
0.00013
1
8260B
8/10/18 13:55
ANG
P81-10159
Acetone
BRL
mg/kg dry
0.027
0.00065
1
8260B
8/10/18 13:55
ANG
P81-10159
Benzene
BRL
mg/kg dry
0.0016
0.00016
1
8260B
8/10/18 13:55
ANG
P81-10159
Bromobenzene
BRL
mg/kg dry
0.0027
0.00022
1
8260B
8/10/18 13:55
ANG
P81-10159
Bromochloromethane
BRL
mg/kg dry
0.0027
0.00015
1
8260B
8/10/18 13:55
ANG
P81-10159
Bromodichloromethane
BRL
mg/kg dry
0.0027
0.00015
1
8260B
8/10/18 13:55
ANG
P81-10159
Bromoform
BRL
mg/kg dry
0.0027
0.00030
1
8260B
8/10/18 13:55
ANG
P81-10159
Bromomethane
BRL
mg/kg dry
0.0053
0.00033
1
8260B
8/10/18 13:55
ANG
P81-10159
Carbon Tetrachloride
BRL
mg/kg dry
0.0027
0.00013
1
8260B
8/10/18 13:55
ANG
P81-10159
Chlorobenzene
BRL
mg/kg dry
0.0027
0.00014
1
8260B
8/10/18 13:55
ANG
P81-10159
Chloroethane
BRL
mg/kg dry
0.0053
0.00022
1
8260B
8/10/18 13:55
ANG
P81-10159
Chloroform
BRL
mg/kg dry
0.0027
0.00019
1
8260B
8/10/18 13:55
ANG
P81-10159
Chloromethane
BRL
mg/kg dry
0.0027
0.00018
1
8260B
8/10/18 13:55
ANG
P81-10159
cis-1,2-Dichloroethylene
BRL
mg/kg dry
0.0027
0.00011
1
8260B
8/10/18 13:55
ANG
P81-10159
cis-1,3-Dichloropropylene
BRL
mg/kg dry
0.0027
0.000090
1
8260B
8/10/18 13:55
ANG
P81-10159
Dibromochloromethane
BRL
mg/kg dry
0.0027
0.00011
1
8260B
8/10/18 13:55
ANG
P81-10159
Dichlorodifluoromethane
BRL
mg/kg dry
0.0027
0.00012
1
8260B
8/10/18 13:55
ANG
P81-10159
Ethylbenzene
BRL
mg/kg dry
0.0027
0.00010
1
8260B
8/10/18 13:55
ANG
P81-10159
Isopropyl Ether
BRL
mg/kg dry
0.0027
0.00011
1
8260B
8/10/18 13:55
ANG
P81-10159
Isopropylbenzene (Cumene)
BRL
mg/kg dry
0.0027
0.00016
1
8260B
8/10/18 13:55
ANG
P81-10159
m,p-Xylenes
BRL
mg/kg dry
0.0053
0.00025
1
8260B
8/10/18 13:55
ANG
P81-10159
Methyl Butyl Ketone (2-Hexanone)
BRL
mg/kg dry
0.027
0.00024
1
8260B
8/10/18 13:55
ANG
P81-10159
Methyl Ethyl Ketone (2-Butanone)
BRL
mg/kg dry
0.053
0.00024
1
8260B
8/10/18 13:55
ANG
P81-10159
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone] Page 21 of 43

P R S M Laboratory Report
` Full -Service Analytical &
/ Environmental Solutions 11/13/2018
LABORATORIES INC.
NOVA Engineering & Environmental Project: PreGel (Concord, NC) Client Sample ID: SW-4
Attn: David Penalva Prism Sample ID: 8080158-05
5104 Reagan Drive Suite 8 Prism Work Order: 8080158
Charlotte, NC 28206 Sample Matrix: Solid Time Collected: 08/09/18 08:15
Time Submitted: 08/09/18 09:10
Parameter
Result
Units
Report
MDL Dilution
Method
Analysis Analyst
Batch
Limit
Factor
Date/Time
ID
Methyl Isobutyl Ketone
BRL
mg/kg dry
0.027
0.00023
1
8260B
8/10/18 13:55
ANG
P81-10159
Methylene Chloride
BRL
mg/kg dry
0.0053
0.00015
1
8260B
8/10/18 13:55
ANG
P81-10159
Methyl-tert-Butyl Ether
BRL
mg/kg dry
0.0053
0.000085
1
8260B
8/10/18 13:55
ANG
P81-10159
Naphthalene
BRL
mg/kg dry
0.0053
0.000084
1
8260B
8/10/18 13:55
ANG
P81-10159
n-Butylbenzene
BRL
mg/kg dry
0.0027
0.00014
1
8260B
8/10/18 13:55
ANG
P81-10159
n-Propylbenzene
BRL
mg/kg dry
0.0027
0.00016
1
8260B
8/10/18 13:55
ANG
P81-10159
o-Xylene
BRL
mg/kg dry
0.0027
0.00011
1
8260B
8/10/18 13:55
ANG
P81-10159
sec-Butylbenzene
BRL
mg/kg dry
0.0027
0.00013
1
8260B
8/10/18 13:55
ANG
P81-10159
Styrene
BRL
mg/kg dry
0.0027
0.00016
1
8260B
8/10/18 13:55
ANG
P81-10159
tert-Butylbenzene
BRL
mg/kg dry
0.0027
0.000090
1
8260B
8/10/18 13:55
ANG
P81-10159
Tetrachloroethylene
BRL
mg/kg dry
0.0027
0.00013
1
8260B
8/10/18 13:55
ANG
P81-10159
Toluene
BRL
mg/kg dry
0.0027
0.00015
1
8260B
8/10/18 13:55
ANG
P81-10159
trans-1,2-Dichloroethylene
BRL
mg/kg dry
0.0027
0.00016
1
8260B
8/10/18 13:55
ANG
P81-10159
trans-1,3-Dichloropropylene
BRL
mg/kg dry
0.0027
0.00014
1
8260B
8/10/18 13:55
ANG
P81-10159
Trichloroethylene
BRL
mg/kg dry
0.0027
0.00017
1
8260B
8/10/18 13:55
ANG
P81-10159
Trichlorofluoromethane
BRL
mg/kg dry
0.0027
0.00017
1
8260B
8/10/18 13:55
ANG
P81-10159
Vinyl acetate
BRL
mg/kg dry
0.013
0.00037
1
8260B
8/10/18 13:55
ANG
P81-10159
Vinyl chloride
BRL
mg/kg dry
0.0027
0.00013
1
8260B
8/10/18 13:55
ANG
P81-10159
Xylenes, total
BRL
mg/kg dry
0.0080
0.00050
1
8260B
8/10/18 13:55
ANG
P81-10159
Surrogate
Recovery
Control Limits
4-Bromofluorobenzene
100 %
70-130
Dibromofluoromethane
105 %
84-123
Toluene-d8
99 %
76-129
Volatile Petroleum Hydrocarbons
by GC/PID/FID
C5-C8 Aliphatics
BRL
mg/kg dry
9.9
0.32
100
MADEP VPH
8/13/18 16:30
ANG/J
P81-10190
C9-Cl2 Aliphatics
BRL
mg/kg dry
9.9
0.51
100
MADEP VPH
8/13/18 16:30
ANG/J
P81-10190
C9-Cl0 Aromatics
BRL
mg/kg dry
9.9
0.11
100
MADEP VPH
8/13/18 16:30
ANG/J
P81-10190
Surrogate
Recovery
Control Limits
2,5-Dibromotoluene (PID)
117 %
70-130
2,5-Dibromotoluene
(FID)
116 %
70-130
This report should not be reproduced, except in its entirety, without the written consent of Prism Laboratories, Inc.
449 Springbrook Road - P.O. Box 240543 - Charlotte, NC 28224-0543
Phone: [phone] - Toll Free Number: 1-800/529-6364 - Fax: [phone]
Page 22 of 43