FA-7838_42105_CA_RPTS_20200206

2725 East Millbrook Road
Suite 121
Raleigh, NC 27604
Tel: [phone]
Fax: [phone]
www.atcgroupservices.com
N.C. Engineering License No. C-1598

February 6, 2020

Mr. Mark Petermann
North Carolina Department of Environmental Quality
Division of Waste Management – Underground Storage Tank Section
1646 Mail Service Center
Raleigh, North Carolina 27699-1646

Re: Groundwater Monitoring Letter Report
7532 US Highway 421
Lillington, Harnett County, North Carolina
NCDEQ Incident No. 42105
ATC Project No. SLP4210508

Dear Mr. Petermann:

ATC Associates of North Carolina, P.C. (ATC) is pleased to submit the results of a groundwater
sampling event conducted on January 2, 2009, at the 7532 US Highway 421 in Lillington,
Harnett, North Carolina. A site topographic map is included as Figure 1. Currently on-site is a
single-story building occupied by Airmedics Heating & Cooling. A site map is included as Figure
2. The sampling event was performed based on a December 17, 2019, Task Authorization (TA-
08) by the Trust Fund Branch of the Underground Storage Tank (UST) Section, North Carolina
Department of Environmental Quality (NCDEQ). This work is being performed as part of State
Lead Contract #N17004 between NCDEQ and ATC.

On January 2, 2009, ATC mobilized to the site to collect a groundwater sample from monitoring
well MW-1. Field notes from the monitoring event are included in Appendix A. The monitoring
well sample was collected in laboratory-supplied, preserved containers; entered into chain of
custody control; placed on ice; and shipped to North Carolina-accredited SGS North America
Inc. (SGS) in Scott, Louisiana. The samples were analyzed by EPA Method 6200B for volatile
organic compounds. The analytical report is included in Appendix B. The analytical results were
compared to the North Carolina Title 15A, NCAC, Subchapter 2L, Part .0202 (2L Standards) for
groundwater and Gross Contamination Levels (GCLs).

Based on the results, naphthalene, 1,2,3-trichloropropane, and 1,2,4-trimethylbenzene were
present above the 2L Standard in MW-1. No constituent was detected in excess of the Gross
Contamination Level (GCL). Well construction details and groundwater elevation data for
monitoring well MW-1 are included as Table 1. Monitoring well analytical data is included as
Table 2. Natural attenuation parameters are included as Table 3.

TABLES

TABLE 1
WELL CONSTRUCTION AND GROUNDWATER ELEVATION DATA

7532 US HIGHWAY 421
LILLINGTON, HARNETT COUNTY, NORTH CAROLINA
INCIDENT #42105
Monitoring
Well
Date
Installed
Well
Diameter
(inches)
Total
Depth
(feet)
Screen
Interval
(feet)
Top of
Casing
(feet)
Date Measured
Depth to
LNAPL
(feet)
Depth to
Groundwater
(feet)
LNAPL
Thickness
(feet)
Groundwater
Elevation
(feet)
3/21/2019 --2.29 --97.71
10/28/2019 --6.54 --93.46
1/2/2020 --4.90 --95.10
Notes:
1. LNAPL = Light Non-Aqueous Phase Liquid
2. -- = LNAPL Not Detected
100.00MW-1 2/27/2019 2 11 2-11
TABLE 2
GROUNDWATER ANALYTICAL RESULTS
7532 U.S. HIGHWAY 421
LILLINGTON, HARNETT COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #42105
BenzeneTolueneEthylbenzeneXylene (total)Methyl Tert Butyl EtherDi-Isopropyl EtherNaphthalenesec-Butylbenzenen-ButylbenzeneIsopropylbenzenep-Isopropyltoluenen-PropylbenzeneMethylene Chloride1,2,3- Trichloropropane1,2,4-Trimethylbenzene1,3,5-Trimethylbenzene3/21/2019 <10 22.1 867 4,970 <10 <10 337 14.1 <10 82.5 <10 191 <10 21.9 1,890 450
10/28/2019 <10 <10 137 817 <10 <10 82.2 10.1 <10 35.5 <10 99.0 20.2 <10 836 200
1/2/2020 <5.0 <5.0 17.2 261 <5.0 <5.0 28.9 7.4 13.6 11.0 7.6 27.1 <5.0 8.5 606 151
1 600 600 500 20 70 6 70 70 70 25 70 5 0.005 400 400
5,000 260,000 84,500 85,500 20,000 70,000 6,000 8,500 6,900 25,000 11,700 30,000 5,000 NE 28,500 25,000
Notes:
1. "<" or ND = Not detected at or above the laboratory reporting limit.
2. Concentrations are reported in micrograms per liter (ug/l) = parts per billion.
3. Concentrations in bold print equal or exceed the NCDEQ 2L Standard (2L) and italic font indicates concentrations are above GCLs.
4. GCL = Gross Contaminantion Level are referenced in the "Guidelines for Assessment and Corrective Action".
5. MTBE = Methyl Tertiary Butyl Ether
6. IPE= Isopropyl Ether
2L GW Standard
GCL
Monitoring Well Date
Method 6200B
MW-1
TABLE 3
NATURAL ATTENUATION PARAMETERS
US HIGHWAY 421
LILLINGTON, HARNETT COUNTY, NORTH CAROLINA
NCDEQ INCIDENT #42105
3/21/2019 16.18 1.54 0.154 6.17 125
10/28/2019 24.5 3.11 0.188 6.23 45.1
1/2/2020 17.4 6.24 0.1598 7.17 -144.4
Notes:
1. oC = Degrees Celsius.
2. mg/L = milligrams per liter.
3. µs/cm = micro Siemens per centimeter.
4. SU = Standard Units.
5. ORP = Oxidation Reduction Potential
6. mV = Millivolts ORP (mV)MW-1
WELL ID Date
Collected
Temperature (oC)Dissolved Oxygen (mg/L)Conductivity (us/cm)pHPage 1 of 1

FIGURES

Copyright:© 2013 National Geographic Society, i-cubed
0 2,500 5,000 7,500 10,000Feet Topographic Map7532 US HWY 421 - Incident #42105Lillington, Harnett County, NC NCDEQ- Mark PetermannDATE: PREP:Path: S:\GIS_GPS\Project_Folders\Liz Allyn\Topographic Map.mxdREV:PROJECT NO.SCALE:SLP4210501ATC Associates of North Carolina, P.C.Raleigh, North Carolina, 27604(919) 871-0999LAN
NOTES:Features shown are not an authoritative location, nor arethey presented to a stated accuracy.DATA SOURCES:Harnett County GIS DepartmentCOORDINATE SYSTEM:NAD 1983 StatePlane North Carolina FIPS 3200 Feet1:24,0008/27/2018Robert.BrodaSite
W
W
W
WWWWWWWW OHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEU.S. HIGHWAY 421RESIDENCERESIDENCEFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWAIRMEDICSOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEOHEMUNICIPAL WATER LINE20" DUCTILE IRONLEGEND:SITE PROPERTY LINENOTE: ALL LOCATIONS ARE APPROXIMATEPARCEL LINEWATER LINEWWOVERHEAD ELECTRIC LINEOHEFIBER OPTIC LINEFFWATER METERBLOW OFF VALVEFIRE HYDRANTFORMER PUMPISLAND1,000 GAL. UST1,000 GAL. USTFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFAPPROXIMATELY 6"BELOW GRADE10SCALE: 1" = 30'3002030NMW-1MONITORING WELLWell IdentificationMW-1UTILITY POLEFigure:Drawing File:
Project Number:
Ckd. By:
Drn. By:
App'd By:
Ckd. Date:Scale:Date:H:\2020\OTHER OFFICES\NORTH CAROLINA\NCDEQ-STATE LEAD\LILLINGTON\SLP4210505-GW.DWG, FIG 2
GROUNDWATER ANALYTICAL MAP1/20SEE LOWER LEFT7532 U.S. HIGHWAY 421
INCIDENT #42105
LILLINGTON, NORTH CAROLINA
SLP4210508AS SHOWNDH
LA2NOTES:
1.Features shown are not an authoritative location, nor are they presented
to a stated accuracy.
2.Concentrations are reported in micrograms per liter (µg/L).
3.Reported results equal or exceed the NCDEQ 2L Standard (2L).
COORDINATE SYSTEM:
NAD 1983 NORTH CAROLINA STATE PLANE FIPS 3200, US SURVEY FEET

APPENDIX A

FIELD NOTES

APPENDIX B

LABORATORY ANALYTICAL RESULTS
01/09/20
Technical Report for
ATC Group Services LLC
7532 Hwy 421-Lillington, NC
SLP4210508
SGS Job Number: LA60661
Sampling Date: 01/02/20
Report to:
ATC Group Services LLC.
2725 East Millbrook Road Suite 121
Raleigh, NC 27604
[e-mail]; [e-mail]
ATTN: Gabe Araos
Total number of pages in report:
Certifications: LDEQ(2048), LDHH(LA150012), AR(14-045-04), AZ(AZ0805), FL(E87657), IL(200082), KY(#31),
NC(487), SC(73004001), NJ(LA007), TX(T104704186-18-16), WV(257)
This report shall not be reproduced, except in its entirety, without the written approval of SGS.
Test results relate only to samples analyzed.
SGS North America Inc. • 500 Ambassador Caffery • Scott, LA 70583 • tel: [phone]
Test results contained within this data package meet the requirements
of the National Environmental Laboratory Accreditation Program
and/or state specific certification programs as applicable.
Client Service contact: Amy Jackson 337-237-4775
Ron Benjamin
Lab Director
Scott, LA 01/09/20
e-Hardcopy 2.0
Automated Report
22
SGS is the sole authority for authorizing edits or modifications to this document.
Unauthorized modification of this report is strictly prohibited.
Review standard terms at: http://www.sgs.com/en/terms-and-conditions
The results set forth herein are provided by SGS North America Inc.
Please share your ideas about
how we can serve you better at:
[e-mail]
1 of 22
LA60661
Table of Contents
-1-
Sections:
Section 1: Sample Summary ...................................................................................................3
Section 2: Summary of Hits ....................................................................................................4
Section 3: Sample Results ........................................................................................................5
3.1: LA60661-1: MW1 ........................................................................................................6
Section 4: Misc. Forms ............................................................................................................9
4.1: Chain of Custody ...........................................................................................................10
Section 5: MS Volatiles - QC Data Summaries .....................................................................13
5.1: Method Blank Summary ................................................................................................14
5.2: Blank Spike/Blank Spike Duplicate Summary ..............................................................17
5.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................20 123452 of 22
LA60661
SGS North America Inc.
Sample Summary
ATC Group Services LLC
Job No:LA60661
7532 Hwy 421-Lillington, NC
Project No: SLP4210508
Sample Collected Matrix Client
Number Date Time By Received Code Type Sample ID
This report contains results reported as ND = Not detected. The following applies:
Organics ND = Not detected above the RL
LA60661-1 01/02/20 13:45 TJ 01/07/20 AQ Ground Water MW1
3 of 22
LA606611
Summary of Hits Page 1 of 1
Job Number:LA60661
Account:ATC Group Services LLC
Project:7532 Hwy 421-Lillington, NC
Collected:01/02/20
Lab Sample ID Client Sample ID Result/
Analyte Qual RL MDL Units Method
LA60661-1 MW1
n-Butylbenzene 13.6 5.0 ug/l SM 6200B
sec-Butylbenzene 7.4 5.0 ug/l SM 6200B
Ethylbenzene 17.2 5.0 ug/l SM 6200B
Isopropylbenzene 11.0 5.0 ug/l SM 6200B
p-Isopropyltoluene 7.6 5.0 ug/l SM 6200B
Naphthalene 28.9 5.0 ug/l SM 6200B
n-Propylbenzene 27.1 5.0 ug/l SM 6200B
1,2,3-Trichloropropane 8.5 5.0 ug/l SM 6200B
1,2,4-Trimethylbenzene 606 5.0 ug/l SM 6200B
1,3,5-Trimethylbenzene 151 5.0 ug/l SM 6200B
m,p-Xylene 187 10 ug/l SM 6200B
o-Xylene 73.6 5.0 ug/l SM 6200B
Xylene (total)261 5.0 ug/l SM 6200B
4 of 22
LA606612
SGS North America Inc.
Sample Results
Report of Analysis
Scott, LA
Section 3
5 of 22
LA606613
SGS North America Inc.
Report of Analysis Page 1 of 3
Client Sample ID:MW1
Lab Sample ID:LA60661-1 Date Sampled:01/02/20
Matrix:AQ - Ground Water Date Received:01/07/20
Method:SM 6200B Percent Solids:n/a
Project:7532 Hwy 421-Lillington, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 2K0121608.D 10 01/08/20 12:22 CP n/a n/a V2K2245
Run #2
Purge Volume
Run #1 25.0 ml
Run #2
VOA Special List
CAS No.Compound Result RL Units Q
67-64-1 Acetone ND 100 ug/l
71-43-2 Benzene ND 5.0 ug/l
108-86-1 Bromobenzene ND 5.0 ug/l
74-97-5 Bromochloromethane ND 5.0 ug/l
75-27-4 Bromodichloromethane ND 5.0 ug/l
75-25-2 Bromoform ND 5.0 ug/l
104-51-8 n-Butylbenzene 13.6 5.0 ug/l
135-98-8 sec-Butylbenzene 7.4 5.0 ug/l
98-06-6 tert-Butylbenzene ND 5.0 ug/l
56-23-5 Carbon Tetrachloride ND 2.0 ug/l
108-90-7 Chlorobenzene ND 5.0 ug/l
75-00-3 Chloroethane ND 5.0 ug/l
67-66-3 Chloroform ND 5.0 ug/l
95-49-8 o-Chlorotoluene ND 5.0 ug/l
106-43-4 p-Chlorotoluene ND 5.0 ug/l
124-48-1 Dibromochloromethane ND 2.0 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 5.0 ug/l
106-93-4 1,2-Dibromoethane ND 5.0 ug/l
75-71-8 Dichlorodifluoromethane ND 5.0 ug/l
541-73-1 m-Dichlorobenzene ND 5.0 ug/l
95-50-1 o-Dichlorobenzene ND 5.0 ug/l
106-46-7 p-Dichlorobenzene ND 5.0 ug/l
75-34-3 1,1-Dichloroethane ND 5.0 ug/l
107-06-2 1,2-Dichloroethane ND 2.0 ug/l
75-35-4 1,1-Dichloroethylene ND 5.0 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 5.0 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 5.0 ug/l
78-87-5 1,2-Dichloropropane ND 3.0 ug/l
142-28-9 1,3-Dichloropropane ND 5.0 ug/l
594-20-7 2,2-Dichloropropane ND 5.0 ug/l
563-58-6 1,1-Dichloropropene ND 5.0 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 2.0 ug/l
ND = Not detected J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
6 of 22
LA6066133.1
SGS North America Inc.
Report of Analysis Page 2 of 3
Client Sample ID:MW1
Lab Sample ID:LA60661-1 Date Sampled:01/02/20
Matrix:AQ - Ground Water Date Received:01/07/20
Method:SM 6200B Percent Solids:n/a
Project:7532 Hwy 421-Lillington, NC
VOA Special List
CAS No.Compound Result RL Units Q
10061-02-6 trans-1,3-Dichloropropene ND 2.0 ug/l
108-20-3 Di-Isopropyl Ether ND 5.0 ug/l
64-17-5 Ethyl Alcohol ND 500 ug/l
100-41-4 Ethylbenzene 17.2 5.0 ug/l
591-78-6 2-Hexanone ND 10 ug/l
87-68-3 Hexachlorobutadiene ND 2.0 ug/l
98-82-8 Isopropylbenzene 11.0 5.0 ug/l
99-87-6 p-Isopropyltoluene 7.6 5.0 ug/l
74-83-9 Methyl Bromide ND 5.0 ug/l
74-87-3 Methyl Chloride ND 5.0 ug/l
74-95-3 Methylene Bromide ND 5.0 ug/l
75-09-2 Methylene Chloride ND 5.0 ug/l
78-93-3 Methyl Ethyl Ketone ND 250 ug/l
108-10-1 4-Methyl-2-pentanone ND 5.0 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 5.0 ug/l
91-20-3 Naphthalene 28.9 5.0 ug/l
103-65-1 n-Propylbenzene 27.1 5.0 ug/l
100-42-5 Styrene ND 5.0 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 5.0 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 2.0 ug/l
127-18-4 Tetrachloroethylene ND 5.0 ug/l
108-88-3 Toluene ND 5.0 ug/l
87-61-6 1,2,3-Trichlorobenzene ND 5.0 ug/l
120-82-1 1,2,4-Trichlorobenzene ND 5.0 ug/l
71-55-6 1,1,1-Trichloroethane ND 5.0 ug/l
79-00-5 1,1,2-Trichloroethane ND 3.0 ug/l
79-01-6 Trichloroethylene ND 5.0 ug/l
75-69-4 Trichlorofluoromethane ND 5.0 ug/l
96-18-4 1,2,3-Trichloropropane 8.5 5.0 ug/l
95-63-6 1,2,4-Trimethylbenzene 606 5.0 ug/l
108-67-8 1,3,5-Trimethylbenzene 151 5.0 ug/l
108-05-4 Vinyl Acetate ND 5.0 ug/l
75-01-4 Vinyl Chloride ND 1.0 ug/l
m,p-Xylene 187 10 ug/l
95-47-6 o-Xylene 73.6 5.0 ug/l
1330-20-7 Xylene (total)261 5.0 ug/l
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
17060-07-0 1,2-Dichloroethane-D4 96%70-130%
ND = Not detected J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
7 of 22
LA6066133.1
SGS North America Inc.
Report of Analysis Page 3 of 3
Client Sample ID:MW1
Lab Sample ID:LA60661-1 Date Sampled:01/02/20
Matrix:AQ - Ground Water Date Received:01/07/20
Method:SM 6200B Percent Solids:n/a
Project:7532 Hwy 421-Lillington, NC
VOA Special List
CAS No.Surrogate Recoveries Run# 1 Run# 2 Limits
2037-26-5 Toluene-D8 98%70-130%
460-00-4 4-Bromofluorobenzene 98%70-130%
ND = Not detected J = Indicates an estimated value
RL = Reporting Limit B = Indicates analyte found in associated method blank
E = Indicates value exceeds calibration range N = Indicates presumptive evidence of a compound
8 of 22
LA6066133.1
SGS North America Inc.
Misc. Forms
Custody Documents and Other Forms
Includes the following where applicable:
• Chain of Custody
Scott, LA
Section 4
9 of 22
LA606614
LA60661: Chain of Custody
Page 1 of 3
10 of 22
LA6066144.1
LA60661: Chain of Custody
Page 2 of 3
11 of 22
LA6066144.1
SGS Sample Receipt Summary
Job Number:LA60661 Client:ATC
Date / Time Received:1/7/2020 8:15:00 AM Delivery Method:FedEx
Project:7532 US HWY 421
4. No. Coolers:1
Airbill #'s:4913 8691 1126
Cooler Security
1. Custody Seals Present:
Y or N
2. Custody Seals Intact:
3. COC Present:
4. Smpl Dates/Time OK
2. Thermometer ID:
Cooler Temperature Y or N
1. Temp criteria achieved:
3. Cooler media:
DV439;
Ice (direct contact)
Quality Control Preservation Y or N N/A
1. Trip Blank present / cooler:
2. Trip Blank listed on COC:
3. Samples preserved properly:
4. VOCs headspace free:
Sample Integrity - Documentation Y or N
1. Sample labels present on bottles:
2. Container labeling complete:
3. Sample container label / COC agree:
Sample Integrity - Condition Y or N
1. Sample recvd within HT:
3. Condition of sample:
2. All containers accounted for:
Sample Integrity - Instructions
1. Analysis requested is clear:
2. Bottles received for unspecified tests
3. Sufficient volume recvd for analysis:
4. Compositing instructions clear:
5. Filtering instructions clear:
Intact
Y or N
Comments
Y or N N/A
Cooler Temps (Initial/Adjusted):#1: (1.9/1.9); DV439
LA60661: Chain of Custody
Page 3 of 3
12 of 22
LA6066144.1
SGS North America Inc.
MS Volatiles
QC Data Summaries
Includes the following where applicable:
• Method Blank Summaries
• Blank Spike Summaries
• Matrix Spike and Duplicate Summaries
Scott, LA
Section 5
13 of 22
LA606615
Method Blank Summary Page 1 of 3
Job Number:LA60661
Account:ATCNCR ATC Group Services LLC
Project:7532 Hwy 421-Lillington, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K2245-MB1 2K0121607.D 1 01/08/20 CP n/a n/a V2K2245
The QC reported here applies to the following samples:Method: SM 6200B
LA60661-1
CAS No.Compound Result RL Units Q
67-64-1 Acetone ND 10 ug/l
71-43-2 Benzene ND 0.50 ug/l
108-86-1 Bromobenzene ND 0.50 ug/l
74-97-5 Bromochloromethane ND 0.50 ug/l
75-27-4 Bromodichloromethane ND 0.50 ug/l
75-25-2 Bromoform ND 0.50 ug/l
104-51-8 n-Butylbenzene ND 0.50 ug/l
135-98-8 sec-Butylbenzene ND 0.50 ug/l
98-06-6 tert-Butylbenzene ND 0.50 ug/l
56-23-5 Carbon Tetrachloride ND 0.20 ug/l
108-90-7 Chlorobenzene ND 0.50 ug/l
75-00-3 Chloroethane ND 0.50 ug/l
67-66-3 Chloroform ND 0.50 ug/l
95-49-8 o-Chlorotoluene ND 0.50 ug/l
106-43-4 p-Chlorotoluene ND 0.50 ug/l
124-48-1 Dibromochloromethane ND 0.20 ug/l
96-12-8 1,2-Dibromo-3-chloropropane ND 0.50 ug/l
106-93-4 1,2-Dibromoethane ND 0.50 ug/l
75-71-8 Dichlorodifluoromethane ND 0.50 ug/l
541-73-1 m-Dichlorobenzene ND 0.50 ug/l
95-50-1 o-Dichlorobenzene ND 0.50 ug/l
106-46-7 p-Dichlorobenzene ND 0.50 ug/l
75-34-3 1,1-Dichloroethane ND 0.50 ug/l
107-06-2 1,2-Dichloroethane ND 0.20 ug/l
75-35-4 1,1-Dichloroethylene ND 0.50 ug/l
156-59-2 cis-1,2-Dichloroethylene ND 0.50 ug/l
156-60-5 trans-1,2-Dichloroethylene ND 0.50 ug/l
78-87-5 1,2-Dichloropropane ND 0.30 ug/l
142-28-9 1,3-Dichloropropane ND 0.50 ug/l
594-20-7 2,2-Dichloropropane ND 0.50 ug/l
563-58-6 1,1-Dichloropropene ND 0.50 ug/l
10061-01-5 cis-1,3-Dichloropropene ND 0.20 ug/l
10061-02-6 trans-1,3-Dichloropropene ND 0.20 ug/l
108-20-3 Di-Isopropyl Ether ND 0.50 ug/l
64-17-5 Ethyl Alcohol ND 50 ug/l
100-41-4 Ethylbenzene ND 0.50 ug/l
14 of 22
LA6066155.1.1
Method Blank Summary Page 2 of 3
Job Number:LA60661
Account:ATCNCR ATC Group Services LLC
Project:7532 Hwy 421-Lillington, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K2245-MB1 2K0121607.D 1 01/08/20 CP n/a n/a V2K2245
The QC reported here applies to the following samples:Method: SM 6200B
LA60661-1
CAS No.Compound Result RL Units Q
591-78-6 2-Hexanone ND 1.0 ug/l
87-68-3 Hexachlorobutadiene 0.27 0.20 ug/l
98-82-8 Isopropylbenzene ND 0.50 ug/l
99-87-6 p-Isopropyltoluene ND 0.50 ug/l
74-83-9 Methyl Bromide ND 0.50 ug/l
74-87-3 Methyl Chloride ND 0.50 ug/l
74-95-3 Methylene Bromide ND 0.50 ug/l
75-09-2 Methylene Chloride ND 0.50 ug/l
78-93-3 Methyl Ethyl Ketone ND 25 ug/l
108-10-1 4-Methyl-2-pentanone ND 0.50 ug/l
1634-04-4 Methyl Tert Butyl Ether ND 0.50 ug/l
91-20-3 Naphthalene 0.32 0.50 ug/l J
103-65-1 n-Propylbenzene ND 0.50 ug/l
100-42-5 Styrene ND 0.50 ug/l
630-20-6 1,1,1,2-Tetrachloroethane ND 0.50 ug/l
79-34-5 1,1,2,2-Tetrachloroethane ND 0.20 ug/l
127-18-4 Tetrachloroethylene ND 0.50 ug/l
108-88-3 Toluene ND 0.50 ug/l
87-61-6 1,2,3-Trichlorobenzene 0.32 0.50 ug/l J
120-82-1 1,2,4-Trichlorobenzene 0.24 0.50 ug/l J
71-55-6 1,1,1-Trichloroethane ND 0.50 ug/l
79-00-5 1,1,2-Trichloroethane ND 0.30 ug/l
79-01-6 Trichloroethylene ND 0.50 ug/l
75-69-4 Trichlorofluoromethane ND 0.50 ug/l
96-18-4 1,2,3-Trichloropropane ND 0.50 ug/l
95-63-6 1,2,4-Trimethylbenzene ND 0.50 ug/l
108-67-8 1,3,5-Trimethylbenzene ND 0.50 ug/l
108-05-4 Vinyl Acetate ND 0.50 ug/l
75-01-4 Vinyl Chloride ND 0.10 ug/l
m,p-Xylene ND 1.0 ug/l
95-47-6 o-Xylene ND 0.50 ug/l
1330-20-7 Xylene (total)ND 0.50 ug/l
15 of 22
LA6066155.1.1
Method Blank Summary Page 3 of 3
Job Number:LA60661
Account:ATCNCR ATC Group Services LLC
Project:7532 Hwy 421-Lillington, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K2245-MB1 2K0121607.D 1 01/08/20 CP n/a n/a V2K2245
The QC reported here applies to the following samples:Method: SM 6200B
LA60661-1
CAS No.Surrogate Recoveries Limits
17060-07-0 1,2-Dichloroethane-D4 96%70-130%
2037-26-5 Toluene-D8 95%70-130%
460-00-4 4-Bromofluorobenzene 93%70-130%
16 of 22
LA6066155.1.1
Blank Spike/Blank Spike Duplicate Summary Page 1 of 3
Job Number:LA60661
Account:ATCNCR ATC Group Services LLC
Project:7532 Hwy 421-Lillington, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K2245-BS1 2K0121604.D 1 01/08/20 CP n/a n/a V2K2245
V2K2245-BSD1 2K0121605.D 1 01/08/20 CP n/a n/a V2K2245
The QC reported here applies to the following samples:Method: SM 6200B
LA60661-1
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
67-64-1 Acetone 50 52.3 105 50.0 100 4 70-130/30
71-43-2 Benzene 20 19.7 99 18.6 93 6 70-130/30
108-86-1 Bromobenzene 20 20.0 100 19.2 96 4 70-130/30
74-97-5 Bromochloromethane 20 18.3 92 17.9 90 2 70-130/30
75-27-4 Bromodichloromethane 20 22.4 112 21.4 107 5 70-130/30
75-25-2 Bromoform 20 19.3 97 18.7 94 3 70-130/30
104-51-8 n-Butylbenzene 20 22.9 115 21.9 110 4 70-130/30
135-98-8 sec-Butylbenzene 20 21.7 109 20.9 105 4 70-130/30
98-06-6 tert-Butylbenzene 20 21.5 108 21.0 105 2 70-130/30
56-23-5 Carbon Tetrachloride 20 20.4 102 19.7 99 3 70-130/30
108-90-7 Chlorobenzene 20 20.8 104 20.0 100 4 70-130/30
75-00-3 Chloroethane 20 21.9 110 21.4 107 2 60-140/30
67-66-3 Chloroform 20 19.2 96 18.6 93 3 70-130/30
95-49-8 o-Chlorotoluene 20 20.2 101 19.8 99 2 70-130/30
106-43-4 p-Chlorotoluene 20 20.7 104 20.2 101 2 70-130/30
124-48-1 Dibromochloromethane 20 23.6 118 22.8 114 3 70-130/30
96-12-8 1,2-Dibromo-3-chloropropane 20 19.3 97 18.5 93 4 70-130/30
106-93-4 1,2-Dibromoethane 20 20.9 105 19.9 100 5 70-130/30
75-71-8 Dichlorodifluoromethane 20 19.5 98 18.7 94 4 60-140/30
541-73-1 m-Dichlorobenzene 20 19.5 98 19.0 95 3 70-130/30
95-50-1 o-Dichlorobenzene 20 19.4 97 18.8 94 3 70-130/30
106-46-7 p-Dichlorobenzene 20 19.0 95 18.4 92 3 70-130/30
75-34-3 1,1-Dichloroethane 20 19.5 98 18.7 94 4 70-130/30
107-06-2 1,2-Dichloroethane 20 19.9 100 19.0 95 5 70-130/30
75-35-4 1,1-Dichloroethylene 20 19.5 98 18.6 93 5 70-130/30
156-59-2 cis-1,2-Dichloroethylene 20 18.8 94 18.4 92 2 70-130/30
156-60-5 trans-1,2-Dichloroethylene 20 19.1 96 18.4 92 4 70-130/30
78-87-5 1,2-Dichloropropane 20 20.6 103 19.5 98 5 70-130/30
142-28-9 1,3-Dichloropropane 20 20.6 103 19.6 98 5 70-130/30
594-20-7 2,2-Dichloropropane 20 21.1 106 20.3 102 4 70-130/30
563-58-6 1,1-Dichloropropene 20 19.2 96 19.2 96 0 70-130/30
10061-01-5 cis-1,3-Dichloropropene 20 19.3 97 18.5 93 4 70-130/30
10061-02-6 trans-1,3-Dichloropropene 20 23.4 117 22.5 113 4 70-130/30
108-20-3 Di-Isopropyl Ether 20 19.9 100 19.3 97 3 70-130/30
64-17-5 Ethyl Alcohol 400 441 110 491 123 11 70-130/30
100-41-4 Ethylbenzene 20 20.8 104 20.1 101 3 70-130/30
* = Outside of Control Limits.
17 of 22
LA6066155.2.1
Blank Spike/Blank Spike Duplicate Summary Page 2 of 3
Job Number:LA60661
Account:ATCNCR ATC Group Services LLC
Project:7532 Hwy 421-Lillington, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K2245-BS1 2K0121604.D 1 01/08/20 CP n/a n/a V2K2245
V2K2245-BSD1 2K0121605.D 1 01/08/20 CP n/a n/a V2K2245
The QC reported here applies to the following samples:Method: SM 6200B
LA60661-1
Spike BSP BSP BSD BSD Limits
CAS No.Compound ug/l ug/l %ug/l %RPD Rec/RPD
591-78-6 2-Hexanone 50 57.0 114 55.1 110 3 70-130/30
87-68-3 Hexachlorobutadiene 20 20.7 104 20.1 101 3 70-130/30
98-82-8 Isopropylbenzene 20 22.8 114 21.8 109 4 70-130/30
99-87-6 p-Isopropyltoluene 20 23.1 116 22.3 112 4 70-130/30
74-83-9 Methyl Bromide 20 24.5 123 25.0 125 2 60-140/30
74-87-3 Methyl Chloride 20 17.3 87 16.7 84 4 60-140/30
74-95-3 Methylene Bromide 20 20.3 102 19.7 99 3 70-130/30
75-09-2 Methylene Chloride 20 18.2 91 17.6 88 3 70-130/30
78-93-3 Methyl Ethyl Ketone 50 53.4 107 52.8 106 1 70-130/30
108-10-1 4-Methyl-2-pentanone 50 56.9 114 53.9 108 5 70-130/30
1634-04-4 Methyl Tert Butyl Ether 20 20.1 101 19.7 99 2 70-130/30
91-20-3 Naphthalene 20 23.0 115 22.4 112 3 70-130/30
103-65-1 n-Propylbenzene 20 21.2 106 20.6 103 3 70-130/30
100-42-5 Styrene 20 24.0 120 22.9 115 5 70-130/30
630-20-6 1,1,1,2-Tetrachloroethane 20 22.1 111 21.0 105 5 70-130/30
79-34-5 1,1,2,2-Tetrachloroethane 20 18.9 95 18.6 93 2 70-130/30
127-18-4 Tetrachloroethylene 20 19.4 97 18.5 93 5 70-130/30
108-88-3 Toluene 20 20.5 103 19.7 99 4 70-130/30
87-61-6 1,2,3-Trichlorobenzene 20 21.4 107 20.8 104 3 70-130/30
120-82-1 1,2,4-Trichlorobenzene 20 22.2 111 21.8 109 2 70-130/30
71-55-6 1,1,1-Trichloroethane 20 20.3 102 19.5 98 4 70-130/30
79-00-5 1,1,2-Trichloroethane 20 19.7 99 19.2 96 3 70-130/30
79-01-6 Trichloroethylene 20 20.8 104 19.7 99 5 70-130/30
75-69-4 Trichlorofluoromethane 20 19.2 96 18.5 93 4 60-140/30
96-18-4 1,2,3-Trichloropropane 20 20.2 101 19.4 97 4 70-130/30
95-63-6 1,2,4-Trimethylbenzene 20 21.4 107 20.9 105 2 70-130/30
108-67-8 1,3,5-Trimethylbenzene 20 21.6 108 20.9 105 3 70-130/30
108-05-4 Vinyl Acetate 20 21.4 107 20.4 102 5 70-130/30
75-01-4 Vinyl Chloride 20 18.7 94 17.8 89 5 60-140/30
m,p-Xylene 40 42.5 106 40.7 102 4 70-130/30
95-47-6 o-Xylene 20 22.0 110 21.3 107 3 70-130/30
1330-20-7 Xylene (total)60 64.5 108 62.0 103 4 70-130/30
* = Outside of Control Limits.
18 of 22
LA6066155.2.1
Blank Spike/Blank Spike Duplicate Summary Page 3 of 3
Job Number:LA60661
Account:ATCNCR ATC Group Services LLC
Project:7532 Hwy 421-Lillington, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
V2K2245-BS1 2K0121604.D 1 01/08/20 CP n/a n/a V2K2245
V2K2245-BSD1 2K0121605.D 1 01/08/20 CP n/a n/a V2K2245
The QC reported here applies to the following samples:Method: SM 6200B
LA60661-1
CAS No.Surrogate Recoveries BSP BSD Limits
17060-07-0 1,2-Dichloroethane-D4 97%95%70-130%
2037-26-5 Toluene-D8 102%101%70-130%
460-00-4 4-Bromofluorobenzene 103%102%70-130%
* = Outside of Control Limits.
19 of 22
LA6066155.2.1
Matrix Spike/Matrix Spike Duplicate Summary Page 1 of 3
Job Number:LA60661
Account:ATCNCR ATC Group Services LLC
Project:7532 Hwy 421-Lillington, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA60661-1MS 2K0121615.D 10 01/08/20 CP n/a n/a V2K2245
LA60661-1MSD 2K0121616.D 10 01/08/20 CP n/a n/a V2K2245
LA60661-1 2K0121608.D 10 01/08/20 CP n/a n/a V2K2245
The QC reported here applies to the following samples:Method: SM 6200B
LA60661-1
LA60661-1 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
67-64-1 Acetone ND 500 191 38* a 500 185 37* a 3 70-130/20
71-43-2 Benzene ND 200 196 98 200 180 90 9 70-130/20
108-86-1 Bromobenzene ND 200 204 102 200 190 95 7 70-130/20
74-97-5 Bromochloromethane ND 200 193 97 200 177 89 9 70-130/20
75-27-4 Bromodichloromethane ND 200 225 113 200 205 103 9 70-130/20
75-25-2 Bromoform ND 200 189 95 200 174 87 8 70-130/20
104-51-8 n-Butylbenzene 13.6 200 255 121 200 241 114 6 70-130/20
135-98-8 sec-Butylbenzene 7.4 200 224 108 200 211 102 6 70-130/20
98-06-6 tert-Butylbenzene 1.6 200 221 110 200 211 105 5 70-130/20
56-23-5 Carbon Tetrachloride ND 200 215 108 200 195 98 10 70-130/20
108-90-7 Chlorobenzene ND 200 213 107 200 198 99 7 70-130/20
75-00-3 Chloroethane ND 200 224 112 200 211 106 6 60-140/20
67-66-3 Chloroform ND 200 199 100 200 183 92 8 70-130/20
95-49-8 o-Chlorotoluene ND 200 204 102 200 193 97 6 70-130/20
106-43-4 p-Chlorotoluene ND 200 209 105 200 199 100 5 70-130/20
124-48-1 Dibromochloromethane ND 200 239 120 200 222 111 7 70-130/20
96-12-8 1,2-Dibromo-3-chloropropane ND 200 183 92 200 182 91 1 70-130/20
106-93-4 1,2-Dibromoethane ND 200 211 106 200 199 100 6 70-130/20
75-71-8 Dichlorodifluoromethane ND 200 194 97 200 181 91 7 60-140/20
541-73-1 m-Dichlorobenzene ND 200 196 98 200 187 94 5 70-130/20
95-50-1 o-Dichlorobenzene ND 200 196 98 200 186 93 5 70-130/20
106-46-7 p-Dichlorobenzene ND 200 189 95 200 181 91 4 70-130/20
75-34-3 1,1-Dichloroethane ND 200 201 101 200 183 92 9 70-130/20
107-06-2 1,2-Dichloroethane ND 200 200 100 200 187 94 7 70-130/20
75-35-4 1,1-Dichloroethylene ND 200 201 101 200 185 93 8 70-130/20
156-59-2 cis-1,2-Dichloroethylene ND 200 196 98 200 175 88 11 70-130/20
156-60-5 trans-1,2-Dichloroethylene ND 200 196 98 200 177 89 10 70-130/20
78-87-5 1,2-Dichloropropane ND 200 203 102 200 188 94 8 70-130/20
142-28-9 1,3-Dichloropropane ND 200 209 105 200 195 98 7 70-130/20
594-20-7 2,2-Dichloropropane ND 200 204 102 200 186 93 9 70-130/20
563-58-6 1,1-Dichloropropene ND 200 205 103 200 182 91 12 70-130/20
10061-01-5 cis-1,3-Dichloropropene ND 200 191 96 200 173 87 10 70-130/20
10061-02-6 trans-1,3-Dichloropropene ND 200 234 117 200 216 108 8 70-130/20
108-20-3 Di-Isopropyl Ether ND 200 201 101 200 184 92 9 70-130/20
64-17-5 Ethyl Alcohol ND 4000 2650 66* a 4000 4430 111 50* a 70-130/20
100-41-4 Ethylbenzene 17.2 200 235 109 200 216 99 8 70-130/20
* = Outside of Control Limits.
20 of 22
LA6066155.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 2 of 3
Job Number:LA60661
Account:ATCNCR ATC Group Services LLC
Project:7532 Hwy 421-Lillington, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA60661-1MS 2K0121615.D 10 01/08/20 CP n/a n/a V2K2245
LA60661-1MSD 2K0121616.D 10 01/08/20 CP n/a n/a V2K2245
LA60661-1 2K0121608.D 10 01/08/20 CP n/a n/a V2K2245
The QC reported here applies to the following samples:Method: SM 6200B
LA60661-1
LA60661-1 Spike MS MS Spike MSD MSD Limits
CAS No.Compound ug/l Q ug/l ug/l %ug/l ug/l %RPD Rec/RPD
591-78-6 2-Hexanone ND 500 464 93 500 419 84 10 70-130/20
87-68-3 Hexachlorobutadiene ND 200 188 94 200 180 90 4 70-130/20
98-82-8 Isopropylbenzene 11.0 200 247 118 200 229 109 8 70-130/20
99-87-6 p-Isopropyltoluene 7.6 200 243 118 200 231 112 5 70-130/20
74-83-9 Methyl Bromide ND 200 193 97 200 229 115 17 60-140/20
74-87-3 Methyl Chloride ND 200 161 81 200 157 79 3 60-140/20
74-95-3 Methylene Bromide ND 200 202 101 200 188 94 7 70-130/20
75-09-2 Methylene Chloride ND 200 184 92 200 170 85 8 70-130/20
78-93-3 Methyl Ethyl Ketone ND 500 400 80 500 372 74 7 70-130/20
108-10-1 4-Methyl-2-pentanone ND 500 524 105 500 502 100 4 70-130/20
1634-04-4 Methyl Tert Butyl Ether ND 200 206 103 200 190 95 8 70-130/20
91-20-3 Naphthalene 28.9 200 255 113 200 252 112 1 70-130/20
103-65-1 n-Propylbenzene 27.1 200 244 108 200 233 103 5 70-130/20
100-42-5 Styrene ND 200 241 121 200 224 112 7 70-130/20
630-20-6 1,1,1,2-Tetrachloroethane ND 200 227 114 200 210 105 8 70-130/20
79-34-5 1,1,2,2-Tetrachloroethane ND 200 194 97 200 184 92 5 70-130/20
127-18-4 Tetrachloroethylene ND 200 204 102 200 189 95 8 70-130/20
108-88-3 Toluene ND 200 211 106 200 194 97 8 70-130/20
87-61-6 1,2,3-Trichlorobenzene 1.9 200 203 101 200 197 98 3 70-130/20
120-82-1 1,2,4-Trichlorobenzene ND 200 211 106 200 205 103 3 70-130/20
71-55-6 1,1,1-Trichloroethane ND 200 212 106 200 193 97 9 70-130/20
79-00-5 1,1,2-Trichloroethane ND 200 218 109 200 205 103 6 70-130/20
79-01-6 Trichloroethylene ND 200 204 102 200 187 94 9 70-130/20
75-69-4 Trichlorofluoromethane ND 200 192 96 200 185 93 4 60-140/20
96-18-4 1,2,3-Trichloropropane 8.5 200 192 92 200 193 92 1 70-130/20
95-63-6 1,2,4-Trimethylbenzene 606 200 835 115 200 826 110 1 70-130/20
108-67-8 1,3,5-Trimethylbenzene 151 200 378 114 200 368 109 3 70-130/20
108-05-4 Vinyl Acetate ND 200 206 103 200 192 96 7 70-130/20
75-01-4 Vinyl Chloride ND 200 183 92 200 174 87 5 60-140/20
m,p-Xylene 187 400 620 108 400 585 100 6 70-130/20
95-47-6 o-Xylene 73.6 200 302 114 200 284 105 6 70-130/20
1330-20-7 Xylene (total)261 600 923 110 600 869 101 6 70-130/20
* = Outside of Control Limits.
21 of 22
LA6066155.3.1
Matrix Spike/Matrix Spike Duplicate Summary Page 3 of 3
Job Number:LA60661
Account:ATCNCR ATC Group Services LLC
Project:7532 Hwy 421-Lillington, NC
Sample File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
LA60661-1MS 2K0121615.D 10 01/08/20 CP n/a n/a V2K2245
LA60661-1MSD 2K0121616.D 10 01/08/20 CP n/a n/a V2K2245
LA60661-1 2K0121608.D 10 01/08/20 CP n/a n/a V2K2245
The QC reported here applies to the following samples:Method: SM 6200B
LA60661-1
CAS No.Surrogate Recoveries MS MSD LA60661-1 Limits
17060-07-0 1,2-Dichloroethane-D4 94%90%96%70-130%
2037-26-5 Toluene-D8 100%100%98%70-130%
460-00-4 4-Bromofluorobenzene 103%102%98%70-130%
(a) Outside control limits due to matrix interference. Blank Spike meets acceptance criteria.
* = Outside of Control Limits.
22 of 22
LA6066155.3.1