09068_PTRP Central_315 N Patterson Test Borings_2021Jul06

Mr. David Peacock July 6, 2021
Environmental Senior Specialist
Brownfields - Division of Waste Management
North Carolina Department of Environmental Quality
1646 Mail Service Center
Raleigh, NC 27699-1646

Summary of Waste Soil Characterization and Disposal
315 N Patterson Ave
Winston-Salem, North Carolina
Piedmont Triad Research Park
Brownfields Site Number 09068-05-034
Geo-Hydro Project Number 210287.30

Dear Mr. Peacock:

Geo-Hydro Engineers, Inc. (Geo-Hydro) has completed waste soil characterization and disposal for the
above referenced location. This scope of work was performed in accordance with our phone and email
correspondence on May 25, 2021. This summary includes findings, our opinions, and conclusions founded
on our field observations and the laboratory analytical report.

PROJECT BACKGROUND

The subject property is located at 315 N Patterson Avenue (PIN 6835-37-5026.00) in Winston-Salem, North
Carolina (site). The site is included within the Central District of the Piedmont Triad Research Park
Brownfields Site (number 09068-05-034). Geo-Hydro was contracted by Front Street Capital to perform a
geotechnical evaluation at the site. The soil characterization and disposal scope of work was developed
according to the Land Use Restrictions numbers 2 and 3 in the Notice of Brownfields Property dated
February 22, 2010 pertaining to soil management at the site.

SOIL CHARACTERIZATION AND DISPOSAL

The geotechnical evaluation was performed from May 24 to 27, 2021. Eleven test borings were advanced
by Capital Drilling, Inc. to drilling refusal, with total depths ranging from 68 to 80 feet below ground surface
(bgs). Boring locations are presented in Figure 1 in Appendix 1. Soil cuttings accumulated from boring
advancement were immediately containerized in 55-gallon drums to prevent groundwater leachate from
draining from the saturated soils. A total of 20 drums of soil cuttings were produced. The geotechnical
borings were abandoned by Capital Drilling, Inc. with a bentonite grout mixture and completed with asphalt
at ground surface.

Two composite samples (one per 10 drums) were collected for waste characterization. The samples were
collected in laboratory provided containers, placed on ice, and transported under chain of custody to Pace
3517 Avalon Avenue Phase I ESA ● Charlotte, North Carolina
Project Number 210287.30

June 6, 2021 │ 2

Analytical in Huntersville, NC for analysis of volatile organic compounds (VOCs) by toxicity characteristic
leaching procedure (TCLP) EPA method 8260D and total petroleum hydrocarbons (TPH) diesel range
organics (DRO) by EPA method 8015C.

Analytical results did not indicate detections above laboratory reporting limits. The complete laboratory
analytical report is included in Appendix 2.

The drums were collected from the site by Evo Corporation and transported to their licensed facility for
disposal. A transportation manifest and certificate of disposal are included in Appendix 3.

CLOSING

If you have any questions about this report, or if we can be of further assistance, please call us.

Sincerely,

GEO-HYDRO ENGINEERS, INC.

John Maas, P.G. Thomas Baglivo, P.E.
NC Environmental Manager Director of NC Operations
[e-mail] [e-mail]

JRM/TMB/210172.30 FSC P7 Building 7-6-2021

Appendices
Appendix 1- Figure 1 Boring Location Map
Appendix 2- Laboratory Analytical Report
Appendix 3- Waste Manifest and Certificate of Disposal

Appendix 1
Figures
B-1 B-2 B-3
B-5
B-4
B-6
B-7
B-8
B-9
B-10 B-11
Figure 1: Boring Location Plan
Approximate Scale: 1"=50'
0 25 50 100 150
LEGEND: Soil Test Boring
FSC P7 Building
Winston-Salem, North Carolina
Geo-Hydro Project Number 210172.20

Appendix 2
Laboratory Analytical Report
#=CL#
June 08, 2021
LIMS USE: FR - JOHN MAAS
LIMS OBJECT ID: 92541658
92541658
Project:
Pace Project No.:
RE:
John Maas
Geo-Hydro Engineers
2748 Interstate St
Suite A
Charlotte, NC 28208
FSC 7-WINSTON-SALEM
Dear John Maas:
Enclosed are the analytical results for sample(s) received by the laboratory on June 01, 2021. The results relate only to the
samples included in this report. Results reported herein conform to the applicable TNI/NELAC Standards and the
laboratory's Quality Manual, where applicable, unless otherwise noted in the body of the report.
The test results provided in this final report were generated by each of the following laboratories within the Pace Network:
• Pace Analytical Services - Charlotte
If you have any questions concerning this report, please feel free to contact me.
Sincerely,
Bonnie Vang
[e-mail]
Project Manager
[phone]
Enclosures
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 1 of 14
#=CP#
CERTIFICATIONS
Pace Project No.:
Project:
92541658
FSC 7-WINSTON-SALEM
Pace Analytical Services Charlotte
9800 Kincey Ave. Ste 100, Huntersville, NC 28078
Louisiana/NELAP Certification # LA170028
North Carolina Drinking Water Certification #: 37706
North Carolina Field Services Certification #: 5342
North Carolina Wastewater Certification #: 12
South Carolina Certification #: 99006001
Florida/NELAP Certification #: E87627
Kentucky UST Certification #: 84
Virginia/VELAP Certification #: 460221
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 2 of 14
#=SA#
SAMPLE ANALYTE COUNT
Pace Project No.:
Project:
92541658
FSC 7-WINSTON-SALEM
Lab ID Sample ID Method
Analytes
Reported LaboratoryAnalysts
92541658001 WASTE SOIL-1 EPA 8015C Modified 2 PASI-CAP2
EPA 8260D 14 PASI-CSAS
SW-846 1 PASI-CKDF
92541658002 WASTE SOIL-2 EPA 8015C Modified 2 PASI-CAP2
EPA 8260D 14 PASI-CSAS
SW-846 1 PASI-CKDF
PASI-C = Pace Analytical Services - Charlotte
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 3 of 14
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92541658
FSC 7-WINSTON-SALEM
Sample:WASTE SOIL-1 Lab ID:92541658001 Collected:06/01/21 11:30 Received:06/01/21 14:55 Matrix:Solid
Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions.
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 8015C Modified Preparation Method: EPA 3546
Pace Analytical Services - Charlotte
8015 GCS THC-Diesel
Diesel Range Organics(C10-C28)ND mg/kg 06/07/21 09:5506/04/21 12:416.9 1
Surrogates
n-Pentacosane (S)65 %06/07/21 09:55 629-99-206/04/21 12:4132-130 1
Analytical Method: EPA 8260D Leachate Method/Date: EPA 1311; 06/07/21 13:04
Pace Analytical Services - Charlotte
8260D MSV TCLP
Benzene ND ug/L 06/08/21 12:56 71-43-210020
2-Butanone (MEK)ND ug/L 06/08/21 12:56 78-93-320020
Carbon tetrachloride ND ug/L 06/08/21 12:56 56-23-510020
Chlorobenzene ND ug/L 06/08/21 12:56 108-90-710020
Chloroform ND ug/L 06/08/21 12:56 67-66-310020
1,4-Dichlorobenzene ND ug/L 06/08/21 12:56 106-46-710020
1,2-Dichloroethane ND ug/L 06/08/21 12:56 107-06-210020
1,1-Dichloroethene ND ug/L 06/08/21 12:56 75-35-410020
Tetrachloroethene ND ug/L 06/08/21 12:56 127-18-410020
Trichloroethene ND ug/L 06/08/21 12:56 79-01-610020
Vinyl chloride ND ug/L 06/08/21 12:56 75-01-410020
Surrogates
1,2-Dichloroethane-d4 (S)105 %06/08/21 12:56 17060-07-070-130 20
Toluene-d8 (S)101 %06/08/21 12:56 2037-26-567-135 20
4-Bromofluorobenzene (S)101 %06/08/21 12:56 460-00-470-130 20
Analytical Method: SW-846
Pace Analytical Services - Charlotte
Percent Moisture
Percent Moisture 26.4 %06/01/21 16:46 N20.10 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/08/2021 03:33 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 4 of 14
#=AR#
ANALYTICAL RESULTS
Pace Project No.:
Project:
92541658
FSC 7-WINSTON-SALEM
Sample:WASTE SOIL-2 Lab ID:92541658002 Collected:06/01/21 11:40 Received:06/01/21 14:55 Matrix:Solid
Results reported on a "dry weight" basis and are adjusted for percent moisture, sample size and any dilutions.
Parameters Results Units DF Prepared Analyzed CAS No.QualReport Limit
Analytical Method: EPA 8015C Modified Preparation Method: EPA 3546
Pace Analytical Services - Charlotte
8015 GCS THC-Diesel
Diesel Range Organics(C10-C28)ND mg/kg 06/07/21 10:1806/04/21 12:417.4 1
Surrogates
n-Pentacosane (S)74 %06/07/21 10:18 629-99-206/04/21 12:4132-130 1
Analytical Method: EPA 8260D Leachate Method/Date: EPA 1311; 06/07/21 13:04
Pace Analytical Services - Charlotte
8260D MSV TCLP
Benzene ND ug/L 06/08/21 13:13 71-43-210020
2-Butanone (MEK)ND ug/L 06/08/21 13:13 78-93-320020
Carbon tetrachloride ND ug/L 06/08/21 13:13 56-23-510020
Chlorobenzene ND ug/L 06/08/21 13:13 108-90-710020
Chloroform ND ug/L 06/08/21 13:13 67-66-310020
1,4-Dichlorobenzene ND ug/L 06/08/21 13:13 106-46-710020
1,2-Dichloroethane ND ug/L 06/08/21 13:13 107-06-210020
1,1-Dichloroethene ND ug/L 06/08/21 13:13 75-35-410020
Tetrachloroethene ND ug/L 06/08/21 13:13 127-18-410020
Trichloroethene ND ug/L 06/08/21 13:13 79-01-610020
Vinyl chloride ND ug/L 06/08/21 13:13 75-01-410020
Surrogates
1,2-Dichloroethane-d4 (S)106 %06/08/21 13:13 17060-07-070-130 20
Toluene-d8 (S)103 %06/08/21 13:13 2037-26-567-135 20
4-Bromofluorobenzene (S)101 %06/08/21 13:13 460-00-470-130 20
Analytical Method: SW-846
Pace Analytical Services - Charlotte
Percent Moisture
Percent Moisture 31.1 %06/01/21 17:12 N20.10 1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/08/2021 03:33 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 5 of 14
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92541658
FSC 7-WINSTON-SALEM
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
625526
EPA 8260D
EPA 8260D
8260D MSV TCLP
Laboratory:Pace Analytical Services - Charlotte
Associated Lab Samples:92541658001, 92541658002
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:3289286
Associated Lab Samples:92541658001, 92541658002
Matrix:Water
Analyzed
1,1-Dichloroethene ug/L ND 5.0 06/08/21 11:46
1,2-Dichloroethane ug/L ND 5.0 06/08/21 11:46
1,4-Dichlorobenzene ug/L ND 5.0 06/08/21 11:46
2-Butanone (MEK)ug/L ND 10.0 06/08/21 11:46
Benzene ug/L ND 5.0 06/08/21 11:46
Carbon tetrachloride ug/L ND 5.0 06/08/21 11:46
Chlorobenzene ug/L ND 5.0 06/08/21 11:46
Chloroform ug/L ND 5.0 06/08/21 11:46
Tetrachloroethene ug/L ND 5.0 06/08/21 11:46
Trichloroethene ug/L ND 5.0 06/08/21 11:46
Vinyl chloride ug/L ND 5.0 06/08/21 11:46
1,2-Dichloroethane-d4 (S)%108 70-130 06/08/21 11:46
4-Bromofluorobenzene (S)%104 70-130 06/08/21 11:46
Toluene-d8 (S)%105 67-135 06/08/21 11:46
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
3289285LABORATORY CONTROL SAMPLE:
LCSSpike
1,1-Dichloroethene ug/L 63.250 126 70-132
1,2-Dichloroethane ug/L 59.450 119 70-130
1,4-Dichlorobenzene ug/L 55.350 111 70-130
2-Butanone (MEK)ug/L 128100 128 70-133
Benzene ug/L 57.250 114 70-130
Carbon tetrachloride ug/L 63.050 126 70-130
Chlorobenzene ug/L 52.450 105 70-130
Chloroform ug/L 64.750 129 70-130
Tetrachloroethene ug/L 54.650 109 70-130
Trichloroethene ug/L 60.250 120 70-130
Vinyl chloride ug/L 55.550 111 59-142
1,2-Dichloroethane-d4 (S)%105 70-130
4-Bromofluorobenzene (S)%94 70-130
Toluene-d8 (S)%101 67-135
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/08/2021 03:33 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 6 of 14
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92541658
FSC 7-WINSTON-SALEM
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
Parameter Units
MS
Result
% Rec
Limits Qual% RecConc.
3289287MATRIX SPIKE & MATRIX SPIKE DUPLICATE:
MSSpike
Result
92541273001
3289288
MSD
Result
MSD
% Rec RPD
MSDMS
Spike
Conc.
1,1-Dichloroethene ug/L 400 139 70-158140 1400ND557562
1,2-Dichloroethane ug/L 400 118 67-138117 1400ND472469
1,4-Dichlorobenzene ug/L 400 101 70-133107 6400ND403430
2-Butanone (MEK)ug/L 800 130 61-147129 0800ND10501040
Benzene ug/L 400 122 67-150118 3400ND488472
Carbon tetrachloride ug/L 400 130 70-147120 8400ND521479
Chlorobenzene ug/L 400 104 70-137103 0400ND416414
Chloroform ug/L 400 125 70-144130 4400ND505524
Tetrachloroethene ug/L 400 103 70-139108 5400ND413433
Trichloroethene ug/L M140022470-149220 2400ND896880
Vinyl chloride ug/L 400 116 55-172115 1400ND465459
1,2-Dichloroethane-d4 (S)%110 70-130104
4-Bromofluorobenzene (S)%100 70-130100
Toluene-d8 (S)%102 67-13599
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/08/2021 03:33 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 7 of 14
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92541658
FSC 7-WINSTON-SALEM
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
624959
EPA 3546
EPA 8015C Modified
8015 Solid GCSV
Laboratory:Pace Analytical Services - Charlotte
Associated Lab Samples:92541658001, 92541658002
Parameter Units
Blank
Result
Reporting
Limit Qualifiers
METHOD BLANK:3286684
Associated Lab Samples:92541658001, 92541658002
Matrix:Solid
Analyzed
Diesel Range Organics(C10-C28)mg/kg ND 5.0 06/07/21 09:32
n-Pentacosane (S)%80 32-130 06/07/21 09:32
Parameter Units
LCS
Result
% Rec
Limits Qualifiers% RecConc.
3286685LABORATORY CONTROL SAMPLE:
LCSSpike
Diesel Range Organics(C10-C28)mg/kg 40.766.9 61 47-130
n-Pentacosane (S)%66 32-130
Parameter Units
MS
Result
% Rec
Limits Qualifiers% RecConc.
3286686MATRIX SPIKE SAMPLE:
MSSpike
Result
92541658001
Diesel Range Organics(C10-C28)mg/kg 49.489.7 54 10-133ND
n-Pentacosane (S)%37 32-130
Parameter Units
Dup
Result QualifiersRPDResult
92541658002
3286687SAMPLE DUPLICATE:
Diesel Range Organics(C10-C28)mg/kg NDND
n-Pentacosane (S)%7274
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/08/2021 03:33 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 8 of 14
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92541658
FSC 7-WINSTON-SALEM
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
624136
SW-846
SW-846
Dry Weight/Percent Moisture
Laboratory:Pace Analytical Services - Charlotte
Associated Lab Samples:92541658001
Parameter Units
Dup
Result QualifiersRPDResult
92541360001
3282751SAMPLE DUPLICATE:
Percent Moisture %12.6 N2112.7
Parameter Units
Dup
Result QualifiersRPDResult
92541658001
3283006SAMPLE DUPLICATE:
Percent Moisture %26.0 N2226.4
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/08/2021 03:33 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 9 of 14
#=QC#
QUALITY CONTROL DATA
Pace Project No.:
Project:
92541658
FSC 7-WINSTON-SALEM
Results presented on this page are in the units indicated by the "Units" column except where an alternate unit is presented to the right of the result.
QC Batch:
QC Batch Method:
Analysis Method:
Analysis Description:
624180
SW-846
SW-846
Dry Weight/Percent Moisture
Laboratory:Pace Analytical Services - Charlotte
Associated Lab Samples:92541658002
Parameter Units
Dup
Result QualifiersRPDResult
92541670001
3283069SAMPLE DUPLICATE:
Percent Moisture %21.5 N2622.9
Parameter Units
Dup
Result QualifiersRPDResult
92541688002
3283070SAMPLE DUPLICATE:
Percent Moisture %4.0 N223.9
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/08/2021 03:33 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 10 of 14
#=QL#
QUALIFIERS
Pace Project No.:
Project:
92541658
FSC 7-WINSTON-SALEM
DEFINITIONS
DF - Dilution Factor, if reported, represents the factor applied to the reported data due to dilution of the sample aliquot.
ND - Not Detected at or above adjusted reporting limit.
TNTC - Too Numerous To Count
J - Estimated concentration above the adjusted method detection limit and below the adjusted reporting limit.
MDL - Adjusted Method Detection Limit.
PQL - Practical Quantitation Limit.
RL - Reporting Limit - The lowest concentration value that meets project requirements for quantitative data with known precision and
bias for a specific analyte in a specific matrix.
S - Surrogate
1,2-Diphenylhydrazine decomposes to and cannot be separated from Azobenzene using Method 8270. The result for each analyte is
a combined concentration.
Consistent with EPA guidelines, unrounded data are displayed and have been used to calculate % recovery and RPD values.
LCS(D) - Laboratory Control Sample (Duplicate)
MS(D) - Matrix Spike (Duplicate)
DUP - Sample Duplicate
RPD - Relative Percent Difference
NC - Not Calculable.
SG - Silica Gel - Clean-Up
U - Indicates the compound was analyzed for, but not detected.
Acid preservation may not be appropriate for 2 Chloroethylvinyl ether.
A separate vial preserved to a pH of 4-5 is recommended in SW846 Chapter 4 for the analysis of Acrolein and Acrylonitrile by EPA
Method 8260.
N-Nitrosodiphenylamine decomposes and cannot be separated from Diphenylamine using Method 8270. The result reported for
each analyte is a combined concentration.
Pace Analytical is TNI accredited. Contact your Pace PM for the current list of accredited analytes.
TNI - The NELAC Institute.
ANALYTE QUALIFIERS
Matrix spike recovery exceeded QC limits. Batch accepted based on laboratory control sample (LCS) recovery.M1
The lab does not hold NELAC/TNI accreditation for this parameter but other accreditations/certifications may apply. A
complete list of accreditations/certifications is available upon request.N2
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/08/2021 03:33 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 11 of 14
#=CR#
QUALITY CONTROL DATA CROSS REFERENCE TABLE
Pace Project No.:
Project:
92541658
FSC 7-WINSTON-SALEM
Lab ID Sample ID QC Batch Method QC Batch Analytical Method
Analytical
Batch
92541658001 624959 625249WASTE SOIL-1 EPA 3546 EPA 8015C Modified
92541658002 624959 625249WASTE SOIL-2 EPA 3546 EPA 8015C Modified
92541658001 625526WASTE SOIL-1 EPA 8260D
92541658002 625526WASTE SOIL-2 EPA 8260D
92541658001 624136WASTE SOIL-1 SW-846
92541658002 624180WASTE SOIL-2 SW-846
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, LLC.Date: 06/08/2021 03:33 PM
Pace Analytical Services, LLC
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Page 12 of 14
Page 13 of 14
Page 14 of 14

Appendix 3
Waste Manifest and Certificate of Disposal