MO-6615_27296_CA_LSA_20151218

December 18, 2015
Mr. Wayne Gould
Gould Family Properties 11, LLC
c/o Mr. William Stokesbury
Stokesbury, Shipman & Fingold, LLC
10 Waterside Drive, Suite 204
Farmington, Connecticut 06032
P: 860:606.1708
E: wstokesburv@lawssf:com
Re: Limited Site Investigation Report
Atando Avenue Brownfields Site
527 Atando Avenue
Charlotte, Mecklenburg County, North Carolina
Terracon Project No. 71157718
Dear Mr. Gould:
Irerracan
Terracon Consultants, Inc. (Terracon) is pleased to submit our report of Limited Site Investigation
(LSI) activities completed at the above referenced site. The report presents data .from recent field
activities that included monitoring well installations, a plat survey, a GPR survey, and the
collection of groundwater, soil, sub -slab soil vapor and indoor/outdoor ambient air samples for
laboratory analysis. Terracon conducted the LSI in general accordance With our proposal
(P71157E009) dated January 20, 2015 and the signed agreement for services dated March 3,
2015.
Terracon appreciates this opportunity to provide environmental engineering services to Gould
Family Properties II, LLC. Should you have any questions or require additional information, please
do not hesitate to contact our office.
Sincerely,
Terracon Consultants, Inc.
Senior
Attachments
Terraoon Consultants, Inc. 2020-E Starita Road Charlotte, NC 28206'
P [phone] F [phone] terracon.com

LIMITED SITE
Atando Avenue Brownfields Site
527 Atando Avenue
Charlotte, Mecklenburg County, North Carolina
December 18, 2015
Terracon Project No. 71157718
Prepared for:
Gould Family Properties II, LLC
Prepared by:
Terracon Consultants, Inc.
Charlotte, North Carolina

tiff eurof ins
Client Sample ID: IA-03
Lab IDN:1608844-02B
MODIFIED EPA METHOD TO-15 GC/MS SIWFULL SCAN
File Name: v082509sim Date of Collection: 8118116 4:37:00 PM
oil. Factor: 1.74 Date of Analysis: 8125116 01:62 PM
Rot. Limit
Amount
Rot. Limit
Amount
Compound
(ppbv)
(ppbv)
(ug/m3)
(ug/m3)
Vinyl Chloride
0.017
Not Detected
0.044
Not Detected
1,1-Dichloroethene
0.017
Not Detected
0.069
Not Detected
trans-1,2-Dichloroethene
0.17
Not Detected
0.69
Not Detected
cis-1,2-Dichloroethene
0.035
Not Detected
0.14
Not Detected
Chloroform
0.035
Not Detected
0.17
Not Detected
Benzene
0.087
0.20
0.28
0.65
1,2-Dichloroethane
0.035
Not Detected
0.14
Not Detected
Trichloroethene
0.035
Not Detected
0.19
Not Detected
Tetrachloroethene
- 0.035
0.097
0.24
0.66
Ethyl Benzene
0.035
0.46
0.15
2.0
m,p-Xylene
0.070
2.1
0.30
9.0
o-Xylene
0.035
0.70
0.15
3.1
Naphthalene
0,087
0.090
0.46
0.47
Container Type: 6 Liter Summa Canister (SIM Certified)
Method
Surrogates %Recovery Limits
1,2-Dichloroethane-d4 114 70-130
Toluene-d8 97-70-130
4-Bromo0uorobenzene 103 70-130
Page 13 of 33

ti% eurofins
Air Toxics
Client Sample ID: IA-03
Lab ID#: 1608844-02A
MODIFIED EPA METHOD T -1 S I LL
File Name: v082509 Date of Collection: 8118116 4:37:00 PM
oil. Factor: 1.74 - Date of Analysis: 8125116 01:52 PM
Rpt. Limit
Amount
Rpt. Limit
Amount
Compound (ppbv)
(ppbv)
(uglm3)
(ug/m3)
p-Cymene 0.87
Not Detected
4.8
Not Detected
Container Type: 6 Liter Summa Canister (SIM Certified)
Method
Surrogates
%Recovery
- Limits
1,2-Dichloroethane-d4
111
70-130
Toluene-d8
96
70-130
4-Bromofluorobenzene
100
70-130
Page 12 of 33

tip%%eurofins
I Air Tox€cs
Client Sample ID: IA-02
Lab ID#:1608844-01B
MUDlylIKU EPA ME'1'liOD 111()_15 GUMS SIM/FULL SCAN
File Name: v082508sim Date of Collection: 8118116 4:25:00 PM
Dil. Factor: 1.70 Date of Analysis: 8125/16 01:17 PM
Rpt. Limit
Amount
Rpt. Limit
Amount
Compound
(ppbv)
(ppbv)
(ug/m3)
(ug/m3)
Vinyl Chloride
0.017
Not Detected
0.043
Not Detected
1,1-Dichloroethene
0.017
Not Detected
0.067
Not Detected
trans-1,2-Dichloroethene
0.17
Not Detected
0.67
Not Detected
cis-1,2-Dichloroethene
0.034
Not Detected
0.13
Not Detected
Chloroform
0.034
Not Detected
0.17
Not Detected
Benzene
0.085
0.16
0.27
0.53
1,2-Dichloroethane
0.034
Not Detected
0.14
Not Detected
Trichloroethene
0.034
Not Detected
0.18
Not Detected
Tetrachloroethene
0,034
0.064
0.23
0.44
Ethyl Benzene
0.034
0.37
0.15
1.6
m,p-Xylene
0.068
1.7
0.30
Z4
o-Xylene
0.034
0.59
0.15
2.6
Naphthalene
0.085
0.27
0.44
1.4
Container Type: 6 Liter Summa Canister (SIM Certified)
Method
Surrogates %Recovery Limits
1,2-Dichloroethane-d4 112 70-130
Toluene-d8 98 70-130
4-Bromofluorobenzene 104 70-130
Page 11 of 33

eurofins
Client Sample ID: IA-02
Lab ID#: 1608844-01A
MODIFIED EPA METHOD TO-15 GUMS SIM/FULL SCAN
File Name: v082508 Date of Collection: 8118116 4:25:00 PM
Dil. Factor: 1.70 Date of Analysis: 8125116 61:17 PM
Rpt. Limit
Amount
Rpt. Limit
Amount
Compound (ppbv)
(ppbv)
(ug/m3)
(ug/m3)
p-Cymene 0.85
Not Detected
4.7
Not Detected
Container Type: 6 Liter Summa Canister (SIM Certified)
Method
Surrogates
%Recovery
Limits
1,2-Dichloroethane-d4
ill
70-130
Toluene -dB
99
70-130
4-Bromofluorobenzene
102
70-130
Page 10 of 33

eurofins
Client Sample ID: IA-05
Lab ID#:1608844-04B
MODIFIED EPA METHOD TO-15 GUMS SIM/FULL SCAN
File Name: v082511sim Date of Collection: 8/18/16 4:44:00 PM
Dil. Factor: - 1.74 Date of Analysis: 8125116 03:04 PM
RDt. Limit
Amount
Rpt. Limit
Amount
Compound
(ppbv)
(ppbv)
(uglm3)
(ug/m3)
Vinyl Chloride
0.017
Not Detected
0.044
Not Detected
1,1-Dichloroethene -
0.017
Not Detected
0.069
Not Detected
trans-1,2-Dichloroethene
0.17
Not Detected
0.69
Not Detected
cis- 1, 2-Dichloroethene
0.035
Not Detected
0.14
Not Detected -
Chloroform
0.035
Not Detected
0.17
Not Detected
Benzene
0.087
0.12
0.28
0.38
1,2-Dichloroethane
0.035
Not Detected
0.14
Not Detected
Trichloroethene -
0.035
Not Detected
0.19
Not Detected
Tetrachloroethene
0,035
0.044
0.24
0.30
Ethyl Benzene
0.035
0.18
0.15
0.80
m,p-Xylene
0,070
0.73
0.30
3.2
o-Xylene
0.035
0.26
0.15
1.1
Naphthalene
0.087
Not Detected
0.46
Not Detected
Container Type: 6 Liter Summa Canister (SIM Certified)
Method
Surrogates
%Recovery
Limits
1,2-Dichloroethane-d4
112
70-130 -
Toluene-d8
98
70-130
4-Bromofluorobenzene .
103
70-130
Page 17 of 33

Water System Name: FOREST RIDGE SID Water System No.: NCO118269
7/19/2016
NC Department of Environmental Quality
6Msion of Water Resources, Water Treatment Facility Operators Ceffoabon Board
a Y
ti� u r0(n , INVENTORY REPORT
Air Toxics
Operator Information
Water System Name: FOREST RIDGE S/D Client Sample ID: IA-05 Water System No.: NCO118269
a b1D#:1608844-04A
Distribution Operator Required? MODIFIEDE TOT- IM/F LL SCAN
Cross C
nnedion Control Operator Required? (Yes/No)
(Cross
nrre Nem1ed operator required I system has 5 or rMgStpgle cross connection control deviossbate Of Collection: 8118116 4:44:00 PM
Rot. Lim i� Amount Rpt. Limit Amount
Certified 448f"b&w or Existing) Sy60a e: C (ppbv) (ug/m3) Distributftm3)
Name: p_CykQ&TNER M T W Not Detected 4.8 Not Detected
AlR g
Address 1:Cont4ainer Type 6 Liter Summa Canister (SIM Certified)
Address 2: - Method
City; tAgFiPl9#es State- NC %Recovery ZioCode: 28037 Limits
1 2-Dichlo�le4tl ? 04 Home Phone: 803-8�36 �138 70-130
Work Phon%luene-d8- - 70-130
Operator Tgf .omcBUdriJdeimene Operator Grade: B 98 Operator Certification No.: Win
Certified Operator: (New or Existing) System Grade: C Well
Name: awhk AaFp_NAT4'( IL=— •SUSAN
Address 1: 4163 SINCLAIR STREET
Address 2: -
City: DENVER -)ON • E07 -3377 State: NC Zip Code: 28037
Work Phone: [phone] Home Phone: 7eA-"4-Ji3 02 0340
Operator Type: Well Operator Grade: -ZW Operator Certification No.:
-----==----=------------------------------------------------------------------- --- -
DENR5800(09/2015) Please -send this form directly to Operators Certification Board
Or fax to [phone] (Do Not Send If Information Not Changed)
Page 16 of 33
Public Water Supply Section - Page 20 of 20

*; Ile urofins
Air Toxics
Client Sample ID: IA-04
Lab ID#: 1608844-03B
MODIFIED EPA METHOD TO-15 GUMS SIM/FULL SCAN
File Name: v082510sim Date of Collection: 8118116 4:45:00 PM
DII. Factor: 1.75 Date of Analysis: 8/26116 02:28 PM
Rpt. Limit
Amount
Rpt. Limit
Amount
Compound
(ppbv)
(ppbv)
(uglm3)
(ug/m3)
Vinyl Chloride
0.018
Not Detected
0,045
Not Detected
1,1-Dichloroethene
0.018
Not Detected
0.069
Not Detected
trans-1,2-Dichloroethene
0.18
Not Detected
0.69
Not Detected
cis-1,2-Dichloroethene
0.035
Not Detected
0.14
Not Detected
Chloroform
0.035
Not Detected
0.17
Not Detected
Benzene
0.088
0.16
0.28
0.51
1,2-Dichloroethane
0.035
Not Detected
0.14
Not Detected
Trichloroethene
0.035
Not Detected
0.19
Not Detected
Tetrachloroethene
0.035
0.048
0.24
0.32
Ethyl Benzene
0.035
0.27
0.15
1.2
m,p-Xylene
0.070
1.1
0.30
5.0
o-Xylene
0.035
0.40
0.15
1.7
Naphthalene
0.088
0.12
0.46
0.64
Container Type: 6 Liter Summa
Canister (SIM Certified)
Method
Surrogates
%Recovery
Limits
1,2-Dichloroethane-d4
118
70-130
Toluene-d8
98
'70-130
4-Bromofluorobenzene
104
70-130
Page 15 of 33

ti eurofins
Client Sample ID: IA-04
Lab ID#: 1608844-03A
MODIFIED EPA METHOD TO-15 GCIMS SIM/FULL SCAN
File Name: v082510 Date of Collection: 8118116 4:45:00 PM
Dil. Factor: 1.75 Date of Analysis: 8126/16 02:28 PM
Rpt. Limit
Amount
Rpt. Limit
Amount
Compound (ppbv)
(ppbv)
(uglm3)
(ug/m3)
p-Cymene 0.88
Not Detected
4.8
Not Detected
Container Type: 6 Liter Summa Canister (SIM Certified)
Method
Surrogates
%Recovery
Limits
1,2-Dichloroethane-d4
117
70-130
Toluene-d8
96
70-130
4-Bromofluorobenzene
102
70-130
Page 14 of 33

Water System Name:
NO Department of Environmental Quality
Division of Water Resources, Public Water Supply Section
Water System No.:
@ u rof ins
I� INVENTORY REPORT
I Air Toxics
STORAGE FACILITY
Client Sample ID: IA-06
Water System Name: FOREST RIDGE S/D Lab ID#: 1608844-05A
Water System No.:
NC0118269
WSF State Assigned ID: H01
A(METH1g1D m0-
U§LSCAN
(Storage)
WSF Na STORAGE HYDRO 1
$its
Name: P
v082512
Date of CO�kgkQ
�, ig/jA Adfda6:00 PM
Availabi tylil. Factor-
Permanent, Seasonat,ftergency; Interim; Other
Date of Ansdltsis:
8125116 03:39 PM
Activity Status:
Active; Inactive; Prj �(�imit AAZQNliy Date: R
Amount
p-Grymer a O.tAut of Serviced Actuation (N;.gST) Not Detected
Activity Comment:
Container Type: 6 Liter Summa Canister (SIM Certified)
-----Method
Water Typf urroga (.`.rn„nrluofor (r XfRM 1 Inl Si ufarp (rt))' Surface WatekINO
1,2-Dichloroethane-d4 110 70-130
Annual OpFr9drg:F*iodb(AOP): (if seasonal) Begin Month: --fir-- End Month: �7"0
(defaul fi� b102 enzene 96 70-130
When did this Season go into effect? _ Begin Date: End Date:
. . (If still In effect, leave End Date blank)
Sampling Point:
Sampling Point Code: Location:.
Note 1:
Sampling Point Type:,
Raw Water (RW); Entry Point (EP) .
Activity Status: Active; Inactive; Proposed Status Date:
(MM/DDNYYY)
Constructed Date: (MWDDNYYY) Physical Modification Dater - (MMiDDnYYY)
Directions: LOCATED AT WELL 1
Type: Hydropneumatic Bladder; Elevated; Ground; Hydropneumatic; Reservoir; Standpipe;
Underground; Clear Well; Unknown
Construction Material: ST Asbestos cement; Asphalt; Concrete; Copper; Earth;
Fiberglass; Plastic; Steel; Wood
Coating Type: Approved paint (AP); Epoxy resin (ER); Fiberglass (FG); Glass -lined steel (GS);
Greased; Not approved paint (NP); Plastic; Unlined (UN)
Comments: NCDOL NUMBER: NC221336
Fly
Approved Design Capacity: 5,000 (gallons)
Actual Capacity: _ (gallons) - -
Effective Volume: (gallons)
Indicator.
Auxiliary Power. NO Yes or No Date: (MM(DDNYYY)
NR 4805 (Revised 0S 2015)
Pape 18 of 33
Public Water Supply Saclion
Page 16 of 20

!f
eurofins
Client Sample ID: IA-06
Lab ID#: 1608844-05B
MODIFIED EPA METHOD TO-15 GC/MS SIM/FULL SCAN
File Name: v082512sim Date of Collection: 8118116 4:56:00 PM
oil. Factor: 1.74 Date of Analysis: 8125116 03:39 PM
FRO. Limit
Amount
Rpt. Limit
Amount
Compound
(ppbv)
(ppbv)
(ug/m3)
(ug/m3)
Vinyl Chloride
0.017
Not Detected
0.044
Not Detected
1,1-Dichloroethene
0.017
Not Detected
0.069
Not Detected
trans-1,2-Dichloroethene
0.17
Not Detected
0.69
Not Detected
cis- 1, 2-Dichloroethene
0.035
Not Detected
0.14
Not Detected
Chloroform
0.035
Not Detected
0.17
Not Detected
Benzene
0,087
0.23
0.28
0.74
1,2-Dichloroethane
0.035
Not Detected
0.14
Not Detected
Trichloroethene
0,035
Not Detected
0.19
Not Detected
Tetrachloroethene
- 0,035
0.035 J
0.24
0.23 J
Ethyl Benzene
0.035
0.38
0.15
1.6
m,p-Xylene
0.070
1.7
0.30
7.3
o-Xylene
0.035
0.58
0.15
2.5
Naphthalene
._ 0.087
Not Detected
0.46
Not Detected
J = Estimated value.
Container Type: 6 Liter Summa Canister (SIM Certified)
Method
Surrogates
%Recovery .
Limits
1,2-Dichloroethane-d4
114
70-130
Toluene-d8
96
70-130
4-Bromofluorobenzene
100
70-130
Page 19 of 33

Water System Name:
4ti eurofins
Air Toxics
Client Sample ID: OA-02
Lab ID#: 1608844-06A
Water System No.:
MODIFIED EPA METHOD TO-15 GUMS SIM/FULL SCAN
File Name: v082513 Date of Collection: 8118/16 12:36:00 PM
Dil. Factor: 1.63 Date of Analysis: 8125/16 04:18 PM
Rpt. Limit
Amount
Rpt. Limn
Amount
Compound
(ppbv)
(ppbv)
(ug/m3)
(ug/m3)
p-Cymene
0.82
Not Detected
4.5
Not Detected
Container Type: 6 Liter Summa Canister (SIM Certified)
Method
Surrogates %Recovery Limits
1,2-Dichloroethane-d4 117 70-130
Toluene-d8 97 70-130
4-Bromofluorobenzene 98 70-130
Page 20 of 33
Public Water Supply Section - Page 15 of 20

eurofins
Client Sample ID: OA-02
Lab ID#: 1608844-06B
MODIFIED EPA METHOD TO-15 GUMS hIMIFULL SCAN
File Name: v082513sim Date of Collection: 8118/16 12:36:00 PM
Dil. Factor: 1.63 Date of Analysis: 8125116 04:18 PM
Rpt. Limit
Amount
Rpt. Limit
Amount
Compound
(ppbv)
(ppbv)
(uglm3)
(ug/m3)
Vinyl Chloride
0.016
Not Detected
0.042
Not Detected
1,1-Dichloroethene
0.016
Not Detected
0.065
Not Detected
trans-1,2-Dichloroethene
0.16
Not Detected
0.65
Not Detected
cis-1,2-Dichloroethene
0.033
Not Detected
0.13
Not Detected
Chloroform
0.033
0.066
0.16
0.32
Benzene
0.082
0.22
0.26
0.70
1,2-Dichloroethane
0.033
0,062
0.13
0.25
Trichooroethene
0.033
0.14
0.18
0.78
Tetrachloroethene
0.033
2.4
0.22
16
Ethyl Benzene
0.033
0.59
0.14
2.6
m,p-Xylene
0.065
1.8
0.28
7.6
o-Xylene
0.033
0.70 _
0.14
3.0
Naphthalene
0.082
Not Detected
0.43
Not Detected
Container Type: 6 Liter Summa Canister (SIM Certified)
Method
Surrogates
%Recovery
Limits
1,2-Dichloroethane-d4
118
70-130
Toluene-d8
99 -
70-130
4-Bromofluorobenzene
101
70-130
Page 21 of 33

Water System Name: FOREST RIDGE SID Water System No.: NCO118269
DENR 4804 (Revised 09/2015)
4VI eurof ins
Client Sample ID: OA-03
Lab ID#: 1608844-07A
MODIFIED JKPA METHOD'1' -1 GC/MS SIMIFULL SCAN
File Name: v082514 Date of Collection: 8118/16 1:55:00 PM
oil. Factor: - 1.85 Date of Analysis: 8125116 05:03 PM
Rpt. Limit
Amount
Rpt. Limit
Amount
Compound (ppbv)
(ppbv)
(ug/m3)
(uglm3)
p-Cymene 0.92
Not Detected
5.1
Not Detected
Container Type: 6 Liter Summa Canister (SIM Certified)
Method
Surrogates
%Recovery
Limits
1,2-Dichloroethane-d4
110
70-130
Toluene-d8
98
70-130
4-Bromofluorobenzene
93
70-130
Page 22 of 33 - -
Public Water Supply Section Page 14 of 20

tiff eurofins
f
Client Sample ID: OA-03
Lab ED#:1608844-07B
MODIFIED EPA METHOD TO-15 GUMS SIM/FULL SCAN
File Name: v082514shn Date of Collection: 8/18116 1:55:00 PM
Dil. Factor: 1.85 Date of Analysis: 8125/16 05:03 PM
Rpt. Limit
Amount
Rpt. Limit
Amount
Compound
(ppbv)
(ppbv)
(uglm3)
(ug/m3)
Vinyl Chloride
0.018
Not Detected
0.047
Not Detected
1,1-Dichloroethene
0.018
Not Detected
0.073
Not Detected
trans-1,2-Dichloroethene
0.18
Not Detected
0.73
Not Detected
cis- 1, 2-Dichloroethene
0.037
Not Detected
0.15
Not Detected
_
Chloroform
0.037
0.052
0.18
0.26
Benzene
0.092
0.18
0.30
0.57
1,2-Dichloroethane
0.037
0.13
0.15
0.51
Trichloroethene
0.037
Not Detected
0.20
Not Detected
Tetrachloroethene
0.037
2.0
0.25
14
Ethyl Benzene
0.037
0.42
0.16
1.8
m,p-Xylene
- 0.074
1.2
0.32
- 5.2
o-Xylene
0.037
0.48
0.16
2.1
Naphthalene
0.092
Not Detected
0.48
Not Detected
Container Type: 6 Liter Summa Canister (SIM Certified)
Method
Surrogates
%Recovery
Limits
1,2-Dichloroethane-d4
115
70-130
Toluene-d8
98
70-130
4-Bromofluorobenzene
100
70-130
Page 23 of 33

PAT MCCRORY
Governor
e
DONALD R.
VAN DER VAART
Secretary
Waste Management
MICHAEL SCOTT
ENVIMNMENTAL OUA M ''
Dimfor
July 21, 2016
Joseph T. Ryerson & Son, Inc.
227 W. Monroe Street
Chicago, Illinois 60606
Attention: Mark Silver
Re: Notice of Regulatory Requirements
15A NCAC 2L .0407(c)
Risk -based Assessment and Corrective Action for
Petroleum Underground Storage Tanks
Integris Metals (former)
527 Atando Avenue
Mecklenburg County
Incident Number: 27296
Risk Classification: Intermediate
Dear Mr. Silver:
The UST Section, Division of Waste Management, is in receipt of the Groundwater Monitoring
Report dated July 18, 2016. Review of the report indicates that measurable free product exists in MW-1
during the most recent gauging event. Please continue free product recovery and semi-annual
groundwater monitoring. Conduct the next groundwater sampling event in December 2016 and submit
a groundwater monitoring. report to the UST Section, Mooresville Regional Office prior to January 31,
2017.
Based on the conclusions in the Groundwater Monitoring Report, a pilot test is proposed to
evaluate the use of a surfactant injection to aid in product removal. Therefore, you may submit results
of the proposed pilot test for review. At a minimum, you must continue passive free product recovery
and report the free product recovery results in the next groundwater monitoring report. Please note that
any proposed injections may require Underground Injection Control Program approval.
Effective October 1, 2004, the Department requires that all work following the submittal of the
Limited Site Assessment Report (Title 15A NCAC 2L .0405) be preapproved if State Trust Fund
reimbursement is anticipated. To comply with this requirement, a completed Preapproval/Claim
Authorization Form, encompassing the required remedial activities, must be received in this office
within 14 days of the date of this letter. Upon completion of the preapproved activities, you should
submit your claim promptly. Reimbursement funds are budgeted based on completed preapprovals, but
lengthy delays in reimbursement can occur if claims are not submitted immediately following work
completion.
State of North Carolina I Environmental Quality I Waste Management -
UST Section Central Office 11646 Mail Service Center I Raleigh, NC 27699-1646 1 [phone]

If you have questions regarding the information contained in this letter, please contact me at
[phone] or by the address for the Mooresville Regional Office listed below.
4Si ly,
e's-'
rett o
Hydrogeologist
Mooresville Regional Office
UST Section, Division of Waste Management, NCDEQ
cc: Michael Pressley —ERM NC, Inc., 15720 Brixham Hill Ave., Ste. 120, Charlotte, NC 28277
Mooresville Regional Office 1 610 East Center Avenue I Suite 3011 Mooresville, NC 28115 1 [phone]

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aceAnalytical
-tanwP4pelabs:iom
ANALYTICAL RESULTS
Project: SUNBELT TURRENT 71157718
Pace Project No.: 92271206
Pace Analytical Services, Inc.
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: MW1 Lab ID: 92271206001 Collected: 10/0811513:30 Received: 10/09/1509:15 Matrix: Water
Parameters Results Units Report Limit OF Prepared Analyzed CAS No. Qual
8260 MSV Low Level Analytical Method: EPA 8260
Acetone
NO
ug/L
25.0
1
10/15/15 04:34
67-64-1
Benzene
NO
ug/L
1.0
1
10115/1504:34
71-43-2
Bromobenzene
NO
ug/L
1.0
1
10/15/15 04:34
108-86-1
Bromochloromethane
NO
ug/L
1.0
1
10/1511504:34
74-97-5 -
Bromodichloromethane
NO
ug/L
1.0
1
1011511504:34
75-27-4
Bromoform
NO
ug/L
1.0
1
10/15/15 04:34
75-25-2
Bromomethane
NO
ug/L
2.0
1
10/15/15 04:34
74-83-9
2-Bulanone (MEK)
NO
ug/L
5.0
1
10/15/15 04:34
78-93-3
Carbon tetrachloride
NO
ug/L
1.0
1
10/15/15 04:34
56-23-5
Chlorobenzene
NO
ug/L
1.0
1
10115/1504:34
108-90-7
Chloroethane
NO
ug/L
1.0
1
10/15/15 04:34
75-00-3
Chloroform
NO
ug/L
1.0
1
10/15/15 04:34
67-66-3
Chloromethane
NO
ug/L
1.0
1
10/15/15 04:34
74-87-3
2-Chlorotoluene
NO
ug/L
1.0
1
10/15/15 04:34
95-49-8
4-Chlorotoluene
NO
ug/L
1.0
1
10/1511504:34
106-43-4
1,2-Dibromo-3-chloropropane
NO
ug/L _
2.0
1
10/15/15 04:34
96-12-8
Dibromochloromethane
NO
ug/L
1.0
1
10115/1504:34
124-48-1
1,2-Dibromoethane(EDB)
NO
ug/L
1.0
1
1011511504:34
106-93-4
Dibromomelhane
NO
ug/L
1.0
1
10/15/15 04:34
74-95-3
1,2-Dichlorobenzene
NO
ug/L
1.0
1
10/15/15 04:34
95-50-1
1,3-Dichlorobenzene
ND
ug/L
1.0
1
10/15/15 04:34
541-73-1
1,4-Dichlorobenzene
NO
ug/L -
1.0
1
10/15/1504:34
106-46-7
Dichlorodifluoromethane
NO
ug/L
1.0
1
10/15/15 04:34
75-71-8
1,1-Dichloroethane
NO
ug/L
1.0
1
10/15/15 04:34
75-34-3
1,2-Dichloroethane
NO
ug/L
1.0
1
10/15/15 04:34
107-06-2
1,1-Dichloroethene
NO
ug/L
1.0
1
10/15/15 04:34
75-35-4
cis-1,2-Dichloroethene
NO
ug/L
1.0
1
10/15/15 04:34
156-59-2
trans-1,2-Dichloroethene
NO
ug/L
1.0
1
10/15/15 04:34
156-60-5
1,2-Dichloropropane
NO
ug/L
1.0
1
10/15/15 04:34
78-87-5
1,3-Dichloropropane
NO
ug/L
1.0
1
10/15/15 04:34
142-28-9
2,2-Dichloropropane
NO
ug/L
1.0
1
10/15/15 04:34
594-20-7
1,1-Dichloropropene
NO
ug/L
1.0
1
10/15/15 04:34
563-58-6
cis-1,3-Dichloropropene
NO
ug/L
1.0
1
10/15/15 04:34
10061-01-5
trans-1,3-Dichloropropene
NO
ug/L
1.0
1
10/15/15 04:34
10061-02-6
Diisopropyl ether
NO
ug/L
1.0
1
10/15/15 04:34
108-20-3
Ethylbenzene
NO
ug/L
1.0
1
1011511504:34
100-41-4
Hexachloro-1,3-butadiene
- NO
ug/L
1.0
1
10/15/15 04:34
87-68-3
2-Hexanone
ND
ug/L
5.0
1
10/15/15 04:34
591-78-6
p-Isopropyltoluene
ND
ug/L
1.0
1
10/15/15 04:34
99-87-6
Methylene Chloride
NO
ug/L
2.0
1
10/15/15 04:34
75-09-2
4-Methyl-2-pentanone (MIBK)
NO
ug/L
5.0
1
10/15/15 04:34
108-10-1
Methyl-tert-butyl ether
NO
ug/L
1.0
1
10/15/15 04:34
1634-04-4
Naphthalene
NO
ug/L
1.0
1
10/15/15 04:34
91-20-3
Styrene
NO
ug/L
1.0
1
10/15/15 04:34
100-42-5
1, 1, 1,2-Tetrachloroethane
ND
ug/L
1.0
1
10/15/15 04:34
630-20-6
1,1,2,2-Tetrachloroethane
ND
ug/L
1.0
1
10/15/15 04:34
79-34-5
Telrachloroethene
ND
ug/L
1.0
1
10/15/15 04:34
127-18-4
REPORT OF LABORATORY ANALYSIS
This report shall not he reproduced, except in full,
Date: 10/16/2015 04:30 PM without the written consent of Pace Analytical Services, Inc.. Page 3 of 47

aceAnalytical
ANALYTICAL RESULTS
Project: SUNBELT TURRENT 71157718
Pace Project No.: 92271206
Pace Analytical Services, Inc.
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Sample: MW-4
Lab ID: 92271206001 Collected:
10108/1513:30
Received: 10/0911509:15 Matrix:Water
Parameters
Results
Units Report Limit
DF
Prepared Analyzed
CAS No. Cual
8260 MSV Low Level
Analytical Method:
EPA 8260
Toluene
ND
ug/L
1.0
1
10/15/15 04:34
108-88-3
1,2,3-Trichlorobenzene
ND
ug/L
1.0
1
10/15/15 04:34
87-61-6
1,2,4-Tnchlorobenzene
ND
ug/L
1.0
1
10/15/15 04:34
120-82-1
1,1,1-Trichloroethane
ND
ug/L
1.0
1
10/15/1504:34
71-55-6
1,1,2-Trichloroethane
ND
ug/L
1.0
1
10/15/15 04:34
79-00-5
Trichloroethene
ND
ug/L
1.0
1
10/15/15 04:34
79-01-6
Tnchlorofluoromethane
ND
ug/L
1.0
1
10/15/15 04:34
75-69-4
1,2,3-Tnchloropropane
ND
ug/L
1.0
1
10/15/15 04:34
96-18-4
Vinyl acetate
ND
ug/L
2.0
1
10115/1504:34
108-05-4
Vinyl chloride
ND
ug/L
1.0
1
10115/1504:34
75-01-4
Xylene (Total)
ND
ug/L
2.0
1
10/15/15 04:34
1330-20-7
m&p-Xylene
ND
ug/L
2.0
1
10/15/15 04:34
179601-23-1
o-Xylene
ND
ug/L
1.0
1
10/15/15 04:34
95-47-6
Surrogates
4-Bromofluorobenzene (S)
103
%
70-130
1
10/15/15 04:34
460-00-4
1,2-Dichloroethane-d4 (S)
112
%
70-130
1
10/15/15 04:34
17060-07-0
Toluene-d8(S)
101
%
70-130
1
10/15/15 04:34
2037-26-5
8260 MSV SIM
Analytical Method:
EPA 8260E Mod.
1,4-Dioxane (p-Dioxane)
ND
ug/L
2.0
1
10/12/15 14:45
123-91-1
Surrogates
1,2-Dichloroethane-d4 (S)
109
%
50-150
1
10/12/15 14:45
17060-07-0
Toluene-d8 (S)
125
%
50-150
1
10/12/15 14:45
2037-26-5
Sample: MW-2 Lab ID: 92271206002 Collected: 10/0811514:35 Received: 10/09/1509:15 Matrix: Water
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Dual
8260 MSV Low Level
Acetone
Benzene
Bromobenzene
Bromochloromelhane
Bromodich loromethane
Bromoform
Bromomethane
2-Butanone (MEK)
Carbon tetrachloride
Chlorobenzene
Chloroethane
Chloroform
Chloromethane
2-Chlorotoluene
4-Chlorotoluene
1,2-Dibromo-3-chloropropane
Dibromoch loromethane
Date: 10/16/2015 04:30 PM
Analytical Method: EPA 8260
ND
ug/L
58.2
ug/L
ND
ug/L
ND
ug/L
ND
ug/L
ND
ug/L
ND
ug/L
ND
ug/L
ND
ug/L
ND
ug/L
ND
ug/L
ND
ug/L
ND
ug/L
ND
ug/L
ND
ug/L
ND
ug/L
ND
ug/L
25.0
1
10/15/15 04:51
67-64-1
1.0
1
10/15/15 04:51
71-43-2
1.0
1
10/15/15 04:51
108-86-1
1.0
1
10/15/15 04:51
74-97-5
1.0
1
10/15/16 04:51
75-27-4
1.0
1
10/15/15 04:51
75-25-2
2.0
1
10/15/15 04:51
74-83-9
5.0
1
10/16/15 04:51
78-93-3
1.0
1
10/15/15 04:51
56-23-5
1.0
1
10/15/15 04:51
108-90-7
1.0
1
10/15/15 04:51
75-00-3
1.0
1
10/15/15 04:51
67-66-3
1.0
1
10/15/15 04:51
74-87-3
1.0
1
10/15/15 04:51
95-49-8
1.0
1
10/16/15 04:51
106-43-4
2.0
1
10/15/15 04:51
96-12-8
1.0
1
10/15/15 04:51
124-48-1
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consent of Pace Analytical Services, Inc..
Page 4 of 47

aceAnalytical
x .Paceabs_com
ANALYTICAL RESULTS
Pace Analytical Services, Inc.
9800 Kincey Ave. Suite 100
Hunlersville, NC 28078
(704)8759092
Project: SUNBELTTURRENT 71157718
Pace Project No.: 92271206 -
Sample: MW-2 Lab ID: 92271206002 Collected: 1010811514:35 Received: 10109/1509*15 Matrix: Water
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
8260 MSV Low Level Analytical Method: EPA 8260
1,2-Dibromoethane (EDB)
ND
ug/L
1.0
1
10/15/15 04:51
106-93-4
Dibromomethane
ND
ug/L
1.0
1
10/15/15 04:51
74-95-3
1,2-Dichlorobenzene
ND
ug/L
1.0
1
10/15/15 04:51
95-50-1
1,3-Dichlorobenzene
ND
ug/L
- 1.0
1
10/15/15 04:51
541-73-1
1,4-Dichlorobenzene
ND
ug/L
1.0
1
10/15/15 04:51
106-46-7
Dichlorodifluoromethane
ND
ug/L
1.0
1
10/15/15 04:51
75-71-8
1,1-Dichloroethane
ND
ug/L
1.0
1
10/15/15 04:51
75-34-3
1,2-Dichloroethane
ND
ug/L
1.0
1
10/15/15 04:51
107-06-2
1,1-Dichloroethene
ND
ug/L
1.0
1
10/15/15 04:51
75-35-4
cis-1,2-Dichloroethene
ND
ug/L
1.0
1
10/15/15 04:51
156-59-2
trans-1,2-Dichloroethene
ND
ug/L
1.0
1
10/15/15 04:51
156-60-5
1,2-Dichloropropane
ND
ug/L
1.0
1
10/15/15 04:51
78-87-5
1,3-Dichloropropane
ND
ug/L
1.0
1
10/15/15 04:51
142-28-9
2,2-Dichloropropane
ND
ug/L
1.0
1
10/15/15 04:51
594-20-7
1,1-Dichloropropene
ND
ug/L
1.0
1
10/15/15 04:51
563-58-6,
cis-1,3-Dichloropropene
ND
ug/L
1.0
1
10/15/15 04:51
10061-01-5
trans-1,3-Dichloropropene
ND
ug/L
1.0
1
10/15/15 04:51
10061-02-6
Diisopropyl ether
ND
ug/L
1.0
1
10/15/15 04:51
108-20-3
Ethylbenzene
4.5
ug/L
1.0
1
10/15/15 04:51
100-41-4
Hexachloro-1,3-butadiene
ND
ug/L
1.0
1
10/15/15 04:51
87-68-3
2-Hexanone
ND
ug/L
5.0
1
10/15/15 04:51
591-78-6
p-Isopropyltoluene
3.6
ug/L
1.0
1
10/15/15 04:51
99-87-6
Methylene Chloride
ND
ug/L
2.0
1
10/15/15 04:51
75-09-2
4-Methyl-2-pentanone(MIBK)
ND
ug/L
5.0
1
10/1511504:51
108-10-1
Methyl-tert-butyl ether
ND
ug/L
1.0
1
10/15/15 04:51
1634-04-4
Naphthalene
87.9
ug/L
1.0
1
10/1511504:51
91-20-3
Styrene
ND
ug/L
1.0
1
10/1511504:51
100-42-5
1,1,1,2-Tetrachloroethane
ND
ug/L
1.0
1
10/15/15 04:51
630-20-6
1,1,2,2-Tetrachloroethane
ND
ug/L
1.0
1
10/15/15 04:51
79-34-5
Tetrachloroethene
ND
ug/L
1.0
1
10/15/15 04:51
127-18-4
Toluene
ND
ug/L
1.0
1
10/15/15 04:51
108-88-3
1,2,3-Trichlorobenzene
ND
ug/L
1.0
1
10/15/15 04:51
87-61-6
1,2,4-Trichlorobenzene
ND
ug/L
1.0
1
10/15/15 04:51
120-82-1
1,1,1-Trichloroethene
ND
ug/L
1.0
1
10/15/1504*51
71-55-6
1,1,2-Trichloroethane
ND
ug/L
1.0
1
10/15/15 04:51
79-00-5
Trichloroethene
ND
ug/L
1.0
1
10/1511504:51
79-01-6
Trichlorofluoromethane
ND
ug/L
1.0
1 ..
10/1511504:51
75-69-4
1,2,3-Trichloropropane
ND
ug/L
1.0
1
10/15/15 04:51
96-18-4
Vinyl acetate
ND
ug/L
2.0
1
- 10/15/15 04:51
108-05-4
Vinyl chloride
ND
ug/L
1.0
1
10/15/15 04:51
75-01-4
Xylene (Total)
3.0
ug/L
2.0,
1
10/15/15 04:61
1330-20-7
m&p-Xylene
ND
ug/L
2.0
1
10/15/15 04:51
179601-23-1
o-Xylene
3.0
ug/L
1.0
1
10/15/15 04:51
95-47-6
Surrogates
4-Bromofluorobenzene (S)
105
%
70-130
1
10/15/15 04:51
460-00-4
1,2-Dichloroethane-d4 (S)
109
%
70-130
1
10/15/15 04:51
17060-07-0
Toluene-d8 (S)
100
%
70-130
1
10/15/15 04:51
2037-26-5
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/16/2015 04:30 PM without the written consent of PaceAnalytical Services, Inc.. Page 5 of 47

aceAnaly�ical
mrw:pstbiabs:c»gi
ANALYTICAL RESULTS
Pace Analytical Services, Inc.
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
[phone]
Project: SUNBELTTURRENT 71157718
Pace Project No.: 92271206
Sample: MW-2 Lab ID: 92271206002 Collected: 10/0811514:35 Received: 10109/150915 Matrix: Water
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
8260 MSV SIM Analytical Method: EPA 8260E Mod
1,4-Dioxane (p-Dioxane) ND ug/L 2.0 1 10/12/15 15:05 123-91-1
Surrogates -
1,2-Dichloroethane-d4 (S) 111 % 50-150 1 10/12/15 15:05 17060-07-0
Toluene-d8 (S) 124 % 50-150 1 10/12/15 15:05 2037-26-5
Sample: MW-3 Lab ID: 92271206003 Collected: 10/08/1615:55 Received: 10/0911509:15 Matrix:Water
Parameters Results Units Report Limit DF Prepared Analyzed CAS No. Qual
8260 MSV Low Level Analytical Method: EPA 8260
Acetone
ND
ug/L
25.0
1
10/15/15 05:09
67-64-1
Benzene
1.6
ug/L
1.0
1
10/15/15 05:09
71-43-2
Bromobenzene
ND
ug/L
1.0
1
10115/1505:09
108-86-1
Bromochloromethane
ND
ug/L
1.0
1
10/15/15 05:09
74-97-5
Bromodichloromethane
ND
ug/L
1.0
1
10/15/15 05:09
75-27-4
Bromoform
ND
ug/L
1.0
1
10/15/15 05:09
75-25-2
Bromomethane
ND
ug/L
2.0
1
10/15/15 05:09
74-83-9
2-Butanone(MEK)
ND
ug/L
5.0
1
10/15/15 05:09
78-93-3
Carbon tetrachloride
ND
ug/L
1.0
1
10/15/15 05:09
56-23-5
Chlorobenzene
ND_
ug/L
1.0
1
10/1511505:09
108-90-7
Chloroethane
ND
ug/L
1.0
1"
10/1511505:09
75-00-3
Chloroform
ND
ug/L
1.0
1
10/15/15 05:09
67-66-3
Chloromethane
ND
ug/L
1.0
1
10/15/15 05:09
74-87-3
2-Chlorotoluene
ND
ug/L
1.0
1
10/15/15 05:09
95-49-8
4-Chlorotoluene
ND
ug/L
1.0
1
1011511505:09
10643-4
1,2-Dibromo-3-chloropropane
ND
ug/L
2.0
1
10/15/15 05:09
96-12-8
Dibromochloromethane
ND
ug/L
1.0
1
10/15/15 05:09
124-48-1
1,2-Dlbromoelhane(EDB)
ND
ug/L
1.0
1
10/1511505:09
106-93-4
Dibromomethane
ND
ug/L
1.0
1
1011611505:09
74-95-3
1,2-Dichlorobenzene
ND
ug/L
1.0
1
10/15/15 05:09
95-50-1
1,3-Dichlorobenzene
ND
ug/L
1.0
1
10/1511505:09
541-73-1
1,4-Dichlorobenzene
ND
ug/L
1.0
1
10/15/15 05:09
10646-7
Dichlorodifluoromelhane
ND
ug/L
1.0
1
10115/1505:09
75-71-8
1,1-Dichloroethane
ND
ug/L
1.0
1
10/15/15 05:09
75-34-3
1,2-Dichloroethane
ND
ug/L
1.0
1
10/15/15 05:09
107-06-2
1,1-Dichloroethene
ND
ug/L
1.0
1
10/15/15 05:09
75-35-4
cis-1,2-Dichloroethene
ND
ug/L
1.0
1
10/15/15 05:09
156-59-2
trans-1,2-Dichloroethene
ND
ug/L
1.0
1
10/15/15 05:09
156-60-5
1,2-Dichloropropane
ND
ug/L
1.0
1
10/15/15 05:09
78-87-5
1,3-Dichloropropane
ND
ug/L
1.0
1
10/15/15 05:09
142-28-9
2,2-Dichloropropane
ND
ug/L
1.0
1
10/15/15 05:09
594-20-7
1,1-Dichloropropene
ND
ug/L
1.0
1
10/15/15 05:09
563-58-6
cis-1,3-Dichloropropene
ND
ug/L
1.0
1
10/15/15 05:09
10061-01-5
trans-1,3-Dichloropropene
ND
ug/L
1.0
1
10/15/15 05:09
10061-02-6
Diisopropyl ether
ND
ug/L
1.0
1
10/15/15 05:09
108-20-3
Ethylbenzene
ND
ug/L
1.0
1
10115/1505:09
100-41-4
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
Date: 10/16/2015 04:30 PM without the written consent of Pace Analytical Services, Inc.. Page 6 of 47

aceAnalytical
WWffPa0'alab"DDM
ANALYTICAL RESULTS
Pace Analytical Services, Inc.
9800 Kincey Ave. Suite 100
Huntersville, NC 28078
(704)8759092
Project: SUNBELT TURRENT 71157718
Pace Project No.: 92271206
Sample: MW-3 Lab ID: 92271206003 Collected: 10/08/1515:65 Received: 10/091150915 Matrix: Water
Parameters Results Units Repod Limit OF Prepared Analyzed CAS No. Qual
8260 MSV Low Level Analytical Method: EPA 8260
Hexachloro-1,3-butadiene
NO
ug/L
1.0
1
10/1511505:09
87-68-3
2-Hexanone
NO
ug/L
&0
1
1011511505:09
591-78-6
p-Isopropyltoluene
NO
ug/L
1.0
1
10115/1505:09
99-87-6
Methylene Chloride
NO
ug/L
2.0
1
10115/1505:09
75-09-2
4-Methyl-2-pentanone(MIBK)
NO
ug/L
5.0
1
10/15/1505:09
108-10-1
Methyl-tert-butyl ether
NO
ug/L
1.0
1
10/15/15 05:09
1634-04-4
Naphthalene
4.0
ug/L
1.0
1
10/15/15 05:09
91-20-3
Styrene
NO
ug/L
1.0
1
10/15/1505:09
100-42-5
1,1,1,2-Tetrachloroethane
NO
ug/L
1.0
1
10/15/15 05:09
630-20-6
1,1,2,2-Tetrachloroethane
ND
ug/L
1.0
1
10/16/15 05:09
79-34-5
Tetrachloroethene
ND
ug/L
1.0
1
10/15/15 05:09
127-18-4
Toluene
ND
ug/L
1.0
1
10/15/15 05:09
108-88-3
1,2,3-Trichlorobenzene
ND
ug/L
1.0
1 -
10/15/15 05:09
87-61-6
1,2,4-Trichlorobenzene
ND
ug/L
1.0
1
10/15/15 05:09
120-82-1
1,1,1-Trichloroethane
NO
ug/L
1.0
1
10/15/15 05:09
71-55-6
1,1,2-Trichloroethane
ND
ug/L
1.0
1
10/15/15 05:09
79-00-5
Trichloroethene
ND
ug/L
1.0
1
10/15/15 05:09
79-01-6
Trichlorofluoromethane
ND
ug/L
1.0
1
10/1511505:09
75-69-4
1,2,3-Trichloropropane
ND
ug/L
1.0
1
10/15/15 05:09
96-18-4
Vinyl acetate
NO
ug/L
2.0
1
10/1511505:09
108-05-4
Vinyl chloride
NO
ug/L
1.0
1
10/15/15 05:09
75-01-4
Xylene (Total)
NO
ug/L
2.0
1
10/15/15 05:09
1330-20-7
m&p-Xylene
NO
ug/L
2.0
1
10/15/15 05:09
179601-23-1
o-Xylene
NO
ug/L
1.0
1
10115/1505:09
95-47-6
Surrogates
4-Bromofluorobenzene (S)
103
%
70-130
1
10/15/15 05:09
460-00-4
1,2-Dichloroethane-d4 (S)
110
%
70-130
1
10/15/15 05:09
17060-07-0
Toluene-d8 (S)
100
%
70-130
1 -
10/15/15 05:09
2037-26-5
8260 MSV SIM
Analytical Method:
EPA 8260E Mod.
1,4-Dioxane (p-Dioxane)
NO
ug/L
2.0
1
10/12/15 15:26
123-91-1
Surrogates
-
-
1,2-Dichloroethane-d4 (S)
104
%
50-150
1
10/12/15 15:26
17060-07-0
Toluene-d8 (S)
123
%
50-150
1
10/12/15 15:26
2037-26-5
Sample: MW-5 Lab ID: 92271206004 Collected: 10/08/1510:35 Received: 10/09/1509:15" Matrix:Water
Parameters Results Units Report Limit OF Prepared Analyzed CAS No. Qual
8260 MSV Low Level
Acetone
Benzene
Bromobenzene
Bromochloromelhane
Bromodich loromethane
Bromoform
SF.UM- 1171[9Pd11RIDEWI11I:1 N
Analytical Method: EPA 8260
NO
ug/L
NO
ug/L
NO
ug/L
NO
ug/L
NO
ug/L
NO
ug/L
250
10
10/14/15 08:44
67-64-1
10.0
10
10114/1508144
71-43-2
10.0
10
10/14/15 08:44
108-86-1
10.0
10
10/14/15 08:44
74-97-5
10.0
10
J 10/14/15 08:44
75-274
10.0
10
10/14/15 08:44
75-25-2
REPORT OF LABORATORY ANALYSIS
This report shall not be reproduced, except in full,
without the written consentof PaceAnalytical Services, Inc..
Page 7 of 47

1.0
2.0
3.0
4.0
5.0
6.0
7.0
Tables
TABLE OF CONTENTS lrerracon
SITE DESCRIPTION.......................................................................................................1
1.1
Occurrence of Chlorinated Volatile Organic Compounds (CVOCs) at the Site .....1
1.2
Underground Storage Tank (UST) History ...........................................................3
SCOPE OF SERVICES...................................................................................................4
2.1
Standard of Care..................................................................................................4
2.2
Additional Scope Limitations................................................................................5
2.3
Reliance...............................................................................................................5
FIELD INVESTIGATION METHODS...............................................................................5
3.1
Monitoring Well Installation..................................................................................5
3.2
Groundwater Sampling........................................................................................6
3.3
Soil Sampling.......................................................................................................7
3.4
Soil Vapor Sample Point Installation....................................................................8
3.5
Soil Vapor Sampling............................................................................................8
3.6
Indoor and Outdoor Air Sampling.........................................................................9
3.7
GPR Survey.......................................................................................................10
3.8
Plat Survey........................................................................................................10
INVESTIGATIVE
DERIVED WASTE.............................................................................10
RESULTS..........................................................
5.1 Site Hydrogeology...................................
5.2 Groundwater Sample Results .................
Non -Chlorinated VOCs...........................
CVOCs...................................................
5.3 Soil Sample Results .................................
VOCs......................................................
SVOCs....................................................
5.4 Soil Vapor Sample Results .....................
5.5 Indoor and Outdoor Air Sample Results..
SUMMARY.........................................................
CONCLUSIONS AND RECOMMENDATIONS..
Table 1 — Sampling and Analysis Plan
Table 2 —Well Construction and Groundwater Elevations (October 2015)
Table 3 — Groundwater Analytical Results (August/October 2015)
Table 4 — Soil Analytical Results (August/November 2015)
Table 5 — Air and Soil Vapor Analytical Results (November 2015)
Figures
Figure 1 — Site Location Map
Figure 2 — Site Layout Map
Figure 3 — Groundwater Elevation Map (October 2105)
Figure 4 — Groundwater Results and CVOC Isoconcentration Map
Figure 5 — Soil Boring Location Map
Figure 6 — Soil Boring Analytical Results Map
Figure 7 — Sub -Slab Soil Vapor and Air Sample Location Map
Figure 8 — Sub -Slab Soil Vapor and Air Sample Results Map

TABLE OF CONTENTS (CONTINUED) Irerracon
Appendices
APPENDIX A — WELL CONSTRUCTION RECORD
APPENDIX B — FIELD FORMS AND SAMPLE SHEETS
Groundwater Sample Collection Records
Sub -Slab Soil Vapor Sample Record
Indoor and Outdoor Air Sample Record
Indoor Air Building Survey Form
Indoor Air Sampling Instructions for Occupants
APPENDIX C — GPR INVESTIGATION REPORT
APPENDIX D — SURVEY PLAT
APPENDIX E — IDW WASTE MANIFEST
APPENDIX F — ANALYTICAL REPORTS AND CHAINS OF CUSTODY
Groundwater Sample Analytical Reports — Pace Analytical
Soil Sample Analytical Reports — Pace Analytical
Gas Sample Analytical Report — Eurofins AirToxics

11'erracon
LIMITED SITE INVESTIGATION
ATANDO AVENUE BROWNFIELDS SITE
527 ATANDO AVENUE
CHARLOTTE, NORTH CAROLINA
Terracon Project No. 71157718
December 18, 2015
1.0 SITE DESCRIPTION
The site is located at 527 Atando Avenue in Charlotte, North Carolina and consists of an
approximate 4-acre developed parcel in a predominantly industrialized area (Mecklenburg County
Tax Parcel ID 08505412). The single -story commercial building at the site includes a 7,546
square foot (sq. ft.) office area and two warehouse/manufacturing areas totaling approximately
97,211 sq. ft. The site is bound to the southwest by railroad tracks, to the northwest and southeast
by adjacent industrial facilities, and to the northeast by Atando Avenue. Current and historical
occupants of the on -site building have been suppliers of steel bar stock. As a result of documented
contaminants at the site and planned improvements, the property has been accepted into the
North Carolina Brownfields Program. A topographic map showing the site location is included as
Figure 1 and a site layout map with general site features is included as Figure 2.
Eleven active groundwater monitoring wells (ten shallow aquifer wells and one deep well) are
currently located at the site to assess the extent of impact from releases associated with on -site
underground petroleum storage tanks and chlorinated compounds from an off -site up -gradient
source. The groundwater flow direction at the site is towards the south-southeast. The locations
of on -site monitoring wells and other site features are shown on Figure 2. Water supply wells
have not been reported within 1,500 feet of the site. The nearest surface water feature is an
intermittent stream/drainage ditch located approximately 500 feet to the southwest of the site.
Based on local topography, water from the drainage feature discharges into Little Sugar Creek.
1.1 Occurrence of Chlorinated Volatile Organic Compounds (CVOCs) at the Site
The vapor intrusion concerns addressed in this report are in direct response to the presence of
chlorinated compounds that have been detected in the groundwater at the site. The source of
these CVOCs is separate from and not related to the on -site USTs. The releases associated with
the USTs are being assessed by others.
Historically, groundwater samples obtained from on -site monitoring well MW-5 have shown the
highest concentrations of CVOCs in any other on -site groundwater monitoring well. The detected
concentrations for most of the CVOC constituents exceeded the North Carolina Administrative
Code (NCAC) 2L Groundwater Standards. Well MW-5 is located in the northwestern portion of
the site, up -gradient of the on -site buildings and most operations conducted on the property.
Based on the CVOC levels detected in well MW-5 and health and safety concerns for personnel
Responsive ■ Resourceful ■ Reliable

Limited Site Investigation l�erracon
Atando Avenue Brownfields Site ■Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
on the site and nearby properties, the North Carolina Department of Environmental Quality
(NCDEQ), Division of Waste Management (DWM), Inactive Hazardous Sites Branch (IHSB)
opened Incident No. NONCD0001992 for the site in 2014. Based on preliminary assessment
activities conducted at the site, the IHSB recommended additional assessment to identify the on -
site source of the CVOCs.
In response to the recommendations of the IHSB, Terracon installed monitoring wells MW-9 and
MW-10 in August 2015 at locations up -gradient of well MW-5 along the northwestern property
boundary in an effort to disprove IHSB's claim of an on -site source. Terracon also collected
groundwater samplesfrom remaining monitoring wells MW-2 through MW-8 and DW-1 in October
2015 to evaluate current constituent levels in the groundwater at the site. As a result of our most
recent sampling event, detected CVOCs were highest in the sample from well MW-9 which is
located near the property boundary directly up -gradient of well MW-5. Monitoring well MW-5,
generally exhibited CVOC concentrations lowerthan well MW-9 but higherthan the remaining on -
site monitoring wells. CVOCs were also detected in wells MW-8 and MW-10 located in the
northwestern portion of the site at concentrations several orders of magnitude lower than wells
MW-5 and MW-9. Certain CVOC constituents were also detected in deep monitoring well DW-1
which is located down -gradient of wells MW-5 and MW-9 at concentrations above the 2L
Groundwater Standards while the sample from adjacent shallow well MW-4 did not contain CVOC
constituents above laboratory reporting limits. The August/October 2015 well installation and
sampling activities are discussed in detail in the field methods and results sections of this report.
Based on the groundwater sampling results from August and October 2015, the following activities
were conducted at the site.
■ Preliminary groundwater to indoor air off -gassing calculations (submitted to the IHSB and
the NC Brownfields program on October 27, 2015) indicated a vapor intrusion concern
exists for personnel working inside the warehouse and office areas at the on -site facility.
• After reviewing the preliminary off -gassing calculations, Mr. Miguel Alvalle of the IHSB
requested additional unsaturated zone soil samples be collected near wells MW-5 and
MW-9 to confirm the absence of impacted soils that could be an on -site source of CVOCs.
■ Evaluate the presence of a third UST located in the northwestern portion of the site based
on NCDEQ regulatory file information that could be a potential source of the CVOC
constituents in the groundwater. Two known petroleum USTs were removed from this
portion of the site in the past. The results of a ground penetrating radar (GPR) survey are
provided in Section 3.7.
■ Ms. Carolyn Minnich of the NC Brownfields Program requested sub -slab soil vapor
samples be collected inside the office area and the warehouse to evaluate VOC
concentrations beneath the building slab and determine if the constituent concentrations
Responsive ■ Resourceful ■ Reliable 2

Limited Site Investigation 1 �C'rracon
Atando Avenue Brownfields Site ■ Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
are hazardous to the occupants of the site. The soil and soil vapor/air sampling activities
and results are discussed in this report.
A previously completed Phase I ESA conducted for the site in 2013 identified the adjacent Dy-
Dee Service, as an industrial laundry business formerly located on the property to the north and
up -gradient of the site. An approximate 1,500-gallon aboveground storage tank (AST) in poor
overall condition was reported as a Recognized Environmental Condition (REC) located at the
rear exterior of the Dy-Dee Service building. Terracon confirmed the presence of the AST in
August, October, and November 2015 and also observed several rusted 55-gallon drums stored
at the rear of the Dy-Dee Service building near the AST. Based on the groundwater flow direction
towards the south, a release from the AST, drums or former operations at the Dy-Dee Service
facility could potentially impact the groundwater quality at 527 Atando Avenue. A secondary
potential source for groundwater contamination is a former automotive repair shop that was
reportedly located in a building located at the rear of the Dy-Dee Service building (on the same
parcel). Terracon could not obtain information regarding the car repair business.
1.2 Underground Storage Tank (UST) History
Below is a summary of assessment and remediation activities related to the on -site and out of
service USTs. The UST release incidents are not related to the CVOC contamination but are
summarized below.
Two 6,000-gallon diesel USTs located near the northwestern property corner, just north of the on -
site manufacturing area were reportedly excavated in April 1990. Impacted soils located near the
USTs were reportedly removed at the time of the excavation activities. Confirmation testing
indicated petroleum impacted soils remained in the former tank basin; thus, additional soils were
removed in May 1990- A No Further Action Letter was issued by the NCDEQ in November 1990.
A GPR investigation performed by Terracon in 2015 confirmed the absence of the USTs in the
area of the former tank basin. The GPR survey and associated results are discussed in this report.
Two 6,000-gallon heating oil USTs (an earlier Phase I ESA identified one of the USTs as being
12,000 gallons) were located beneath the concrete slab in the warehouse area, south of the office
space in 2003. Five shallow monitoring wells (MW-1 through MW-5) and one deep monitoring
well (DW-1) were installed to assess groundwater quality. The UST located near well MWA was
removed in 2004 and the second UST, located near well MW-2, was abandoned in place. An
aggressive fluid vapor recovery (AFVR) event and impacted soil removal activities were
performed at the time of removal of the heating oil tank in an attempt to remove the contaminant
source. Free product has been observed in monitoring well MWA since the excavation and AFVR
event. The release of heating oil from the two USTs is maintained by a separate LUST incident.
The approximate locations of the four former on -site USTs are depicted on Figure 2.
Responsive ■ Resourceful ■ Reliable

Limited Site Investigation l��rr�con
Atando Avenue Brownfields Site ■ Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
During a 2013 Limited Phase II Environmental Assessment conducted by HRP Associates, Inc.,
three additional monitoring wells (MW-6, MW-7 and MW-8) were installed at the site to further
define the groundwater contaminant plume. Wells MW-7 and MW-8 were installed near the
northern and western facility corners, respectively, to assess potential up -gradient and off -site
sources that could impact the groundwater quality at the site.
2.0 SCOPE OF SERVICES
Terracon's Limited Site Investigation was performed in general agreement with Terracon's
Proposal P71157EO09 dated January 20, 2015. The scope of services included:
■ Installation of two new groundwater monitoring wells (MW-9 and MW-10);
■ Groundwater sample collection from the 11 on -site monitoring wells;
• Collection of unsaturated zone soil samples from the borings for wells MW-9 and MW-10,
as well as three additional soil borings near well MW-5;
• Collection of shallow soil samples near existing groundwater monitoring wells MW-5 and
MW-9;
■ Collection of four sub -slab soil vapor samples, 1 outdoor ambient air sample and 1 indoor
ambient air sample;
• A ground penetrating radar (GPR) survey to assess the presence of USTs in specific areas
of the site; and,
■ A land survey by a NC licensed surveyor to obtain a plat survey (including monitoring
wells) that satisfies the requirements of the NC Brownfields Program.
The survey was conducted to obtain top of casing elevations and coordinates for the monitoring
wells, a requirement to accurately determine groundwater elevations and flow direction on the
site. The survey plat was also designed to meet the requirements as specified by the INC
Brownfields Program. Soil sampling activities and the GPR survey were performed in response
to a request by the IHSB as discussed in Section 1.1 of this report. The vapor intrusion
investigation was conducted to address a request by the NC Brownfields Program as outlined in
Section 1.1. Our scope of services was not intended to identify every chemical possibly
associated with the site. Similarly, the proposed scope was not intended to determine the extent
or magnitude of any existing contamination.
2.1 Standard of Care
Terracon's services were performed in a manner consistent with generally accepted practices of
the profession undertaken in similar studies in the same geographical area during the same time.
Terracon makes no warranties, either expressed or implied, regarding the findings, conclusions,
or recommendations. Please note that Terracon does not warrant the work of laboratories,
regulatory agencies, or other third parties supplying information used in the preparation of the
Responsive ■ Resourceful ■ Reliable 4

Limited Site Investigation 1 rerracon
Atando Avenue Brownfields Site ■Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
report. The services were performed in accordance with the scope of work authorized by our
client, as reflected in our proposal and were not conducted in accordance with ASTM E1903-11.
2.2 Additional Scope Limitations
Findings, conclusions, and recommendations resulting from these services are based upon
information derived from the on -site activities and other services performed under this scope of
work; such information -is subject to change over time. Certain indicators of the presence of
hazardous substances, petroleum products, or other constituents may have been latent,
inaccessible, unobservable, non -detectable, or not present during these services. We cannot
represent that the site contains no hazardous substances, toxic materials, petroleum products, or
other latent conditions beyond those identified during this investigation. Subsurface conditions
may vary from those encountered at specific borings or wells or during other surveys, tests,
assessments, investigations, or exploratory services. The data, interpretations, findings, and our
recommendations are based solely upon data obtained at the time and within the scope of these
services.
2.3 Reliance
This report has been prepared for the exclusive use of Gould Family Properties II, LLC. Any
authorization for use or reliance by another party (except a governmental entity having jurisdiction
over the site) is prohibited without the expressed written authorization of Gould Family Properties
II, LLC and Terracon. Any unauthorized distribution or reuse is at Gould Family Properties Il,
LLC's sole risk. Reliance by authorized parties will be subject to the terms, conditions, and
limitations stated in the proposal, report, and Terracon's Agreement for Services. The limitation
of liability defined in the terms and conditions is the aggregate limit of Terracon's liability to Gould
Family Properties II, LLC and all relying parties unless otherwise agreed in writing.
3.0 FIELD INVESTIGATION METHODS
Terracon conducted the field work under a health and safety plan developed for this project. Work
was performed using United States Environmental Protection Agency (USEPA) Level D work
attire consisting of hard hats, safety glasses, protective gloves, and protective boots.
3.1 Monitoring Well Installation
Terracon mobilized to the site on August 26, 2015 to, install groundwater monitoring wells MW-9
and MW-10 along the northern property boundary (Figure 2). Prior to intrusive activities, Terracon
submitted a locate request to the public utility locator [NC 811] to arrange for location of
underground public utilities from the street to the utility meter. As an added measure of safety,
Terracon subcontracted Priority Locating of Huntersville, North Carolina, a private utility locator,
Responsive ■ Resourceful ■ Reliable 5

Limited Site Investigation l�err�con
Atando Avenue Brownfields Site ■Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
to locate and mark public utilities beyond the meter as well as additional site utilities identified
near the proposed well locations.
The boreholes were drilled by Environmental Drilling & Probing Services using 8.25-inch inner
diameter hollow stem augers. Boreholes for both wells were advanced to 25 feet below ground
surface (bgs) and constructed with a 2-inch diameter PVC riser and a 15-foot, 10-slot PVC screen.
A sand filter pack was placed in the annulus, extending from the bottom of the well screen to one
foot above the top of the well screen. Hydrated bentonite was then used,to create a 2-foot thick
seal above the filter pack and the remainder of the borehole was filled with cement grout. Wells
were completed with flush -mount manhole covers and 2 by 2 foot concrete well pads. A lockable
expansion plug was installed to provide a watertight seal. The driller's well construction records
for wells MW-9 and MW-10 are included as Appendix A.
3.2 Groundwater Sampling
Terracon mobilized to the site to conduct groundwater sampling as requested by the NCDEQ.
Groundwater samples were collected from the following wells as shown in Table 1.
■ Wells MW-2 through MW-8 and DW-1 on October 8, 2015
• Wells MW-9 and MW-10 on August 27, 2015
Prior to sample collection, Terracon gauged the groundwater elevations in the monitoring wells.
Sufficient time was allowed for the water level in each well to equilibrate to atmospheric pressure.
Since monitoring well MW-1 contained free product, no groundwater elevation was obtained and
no sampling was conducted at the well. Groundwater elevation measurements and monitoring
well construction information are provided in Table 2. The surveyed locations of the 11 on -site
wells are shown on Figure 2.
Prior to sampling, the wells were purged a minimum of three well volumes using a new disposable
bailer. Water quality parameters pH, specific conductance, oxidation-reduction potential,
dissolved oxygen and temperature were measured and recorded after purging each well volume.
The wells were allowed to recharge to a minimum of 90 percent of the original water level volume
before samples were collected. Purge water was temporarily contained in 5-gallon buckets and
then transferred to 55 gallon drums. The drums containing purge water were properly labeled and
transported to an off -site disposal facility on October 26, 2015. Groundwater sampling records
are included in Appendix B of this report.
The groundwater samples were placed in laboratory -supplied glassware, labeled and stored in
an ice -packed cooler. The samples, along with chain -of -custody documentation, were delivered
to Pace Analytical Services, Inc. in Huntersville, North Carolina for analysis of volatile organic
compounds (VOCs) by EPA Method 8260 SIM, including 1,4-dioxane. For quality assurance and
quality control purposes (QA/QC), one duplicate sample was collected from well DW-1 and one
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Limited Site Investigation 1 �err�con
Atando Avenue Brownfields Site ■Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
equipment blank sample was collected from rinsing a new, clean disposable bailer that was later
used to purge well MW-2.
3.3 Soil Sampling
Prior to intrusive activities, Terracon submitted a locate request to the public utility locator [NC
811] to arrange for location of underground public utilities from the street to the utility meter. As
an added measure of safety, Terracon subcontracted Priority Locating of Huntersville, NC, a
private utility locator, in an attempt to locate and mark public utilities beyond the meter as well as
any additional site utilities identified near the proposed soil boring locations. The soil boring
locations are shown on Figure 5.
On August 26, 2015, three soil borings (SB-1, SB-2 and SB-3) were advanced near and up -
gradient of well MW-5. Borings were advanced to 10 feet bgs using direct -push technology and
screened for volatiles using a photo ionization detector (PID). One sample was collected and
submitted for laboratory analysis from the interval with the highest PID reading for each boring.
The borings were located in an area containing an asphalt ground cover while the underlying soils
consisted predominantly of red and tan clayey silts. Petroleum odors were detected by Terracon
while screening the soil cores with a PID. The boreholes were abandoned using hydrated
bentonite and an asphalt patch after the sampling activities were completed.
During the advancement of the borings for wells MW-9 and MWA 0, also on August 26, 2015,
continuous soil cores were extracted from the boreholes for characterization of the soils. Soil
samples (MW-9 10'-15' and MWA 0 15'-18') were collected from each boring at intervals with the
highest PID reading and submitted for laboratory analysis. Soils from both borings consisted
predominantly of brown and tan clayey silt. Upon completion of sampling, monitoring wells MW-
9 and MW-10 were installed in the borings.
On November 11, 2015 at the request of the IHSB, an additional shallow soil sample, SB-04(1-
2), was collected approximately seven feet east of well MW-9 in a grassed area along the northern
property boundary. The soil boring was advanced to a depth of about 2 feet bgs using a hand
auger that was decontaminated using a Liquinox® and water mixture prior to advancing the boring.
The sample was collected from 1-2 feet bgs and screened for volatiles using a PID. At boring
SB-04, the 0-0.5 ft. interval consisted of topsoil with high organic matter. The 0.5-2 ft. interval
consisted of brown silty clay with minor amounts of fine sand. PID screening results of the soil
sample showed readings of 0.0-0.2 parts per million (ppm).
Terracon attempted to collect a shallow soil sample near well MW-5 but could not advance the
hand auger through an asphalt and gravel surface layer.
Soil samples were collected in laboratory provided containers, labeled and placed on ice
immediately after sample collection. The soil samples were submitted for analysis of VOCs via
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Atando Avenue Brownfields Site ■ Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
EPA Method 8260. Terracon staff delivered the soil samples and a completed chain -of -custody
form to Pace Analytical Labs in Huntersville, NC, a North Carolina certified analytical lab,
3.4 Soil Vapor Sample Point Installation
Before any intrusive work inside the warehouse and office areas commenced, Terracon personnel
visited the site on November 3, 2015 to meet with Mr. Jerry Webb, the General Manager of
Sunbelt -Turret, the current building tenant. Mr. Webb approved our locations for each proposed
sub -slab soil vapor sample.
Terracon then submitted a locate request to the public utility locator [NC 811] and subcontracted
Priority Locating to locate and mark public utilities beyond the meter as well as any additional site
utilities identified near the proposed sub -slab soil vapor sample locations. The private utility
locating activities were performed on November 11, 2015. Two unidentified utility lines were
found near proposed boring location SV-01 so Terracon staff decided, upon Mr. Webb's approval,
to move the boring to the north by approximately 3 feet.
Technical approaches and methods outlined in this soil vapor investigation report are in general
accordance with the Interstate Technical and Regulatory Council's Vapor Intrusion: A Practical
Guideline (2007) and Vapor Intrusion Pathway: Investigative Approaches for Typical Scenarios
(2007), as well as the NCDEQ DWM's Vapor Intrusion Guidance (2014).
On November 11, 2015, three temporary sub -slab soil vapor (SV) sampling points were installed
inside the office area and one SV point was installed in the manufacturing area near well MW-5
(Figure 7). Each temporary SV sampling point was installed by drilling a 5/8-inch diameter hole
through the floor slab to a depth of approximately 1 to 2 inches into the underlying soils. The
concrete slab in the office area (points SV-01 through SV-03) was approximately 5 inches thick
while the floor slab in the manufacturing area was roughly 8 inches thick (SV-04). The existence
of a vapor barrier underneath the building slab could not be verified by Terracon. The SV
sampling points were completed with a Vapor PinTm assembly consisting of a brass barb fitting
with a silicone sleeve to seal the 5/8-inch diameter hole. A silicone cap was placed over the vapor
pin to keep it sealed and the sample points were allowed to equilibrate overnight prior to sampling.
Details regarding sample IDs and analytical methods for the SV samples are provided in Table
1.
3.5 Soil Vapor Sampling
Terracon mobilized to the site on November 12, 2015 to collect the four sub -slab soil vapor
samples. In order to test the integrity of the sampling point seal, both a shut-in test and a helium
tracer test were conducted at each sample point. A MGD-2000 helium detector was used to verify
the presence and concentration of tracer gas.
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Atando Avenue Brownfields Site ■ Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
The protocol for using a tracer gas is to enclose the sample manifold, tubing and ground interface
with a shroud and enrich the shroud atmosphere with helium. Prior to sample collection, at least
three volumes of the vapor point annulus and attached Teflon® lined tubing and sample train were
purged using a vacuum canister. Purge samples were then screened for helium to assess the
presence of leaks in the well seal and fittings and with a PID to assess for the presence of VOCs.
Sample collection was started if the tracer testing indicated the helium concentration in the vapor
point was less than 10 percent of the helium concentration in the shroud, indicating an
appropriately sealed vapor point annulus.
Samples were collected with 1.0-liter Summa® canisters equipped with 170 ml/min flow controllers
for analysis of VOCs per EPA Method TO-15. The reporting list was restricted to the CVOC
compounds detected in the groundwater at the site and their daughter products. In addition to the
tracer test performed in the field, one sample was analyzed for helium by Method ASTMA 946 to
quantify leakage. A helium analysis was performed on a sample that exhibited leakage during
field leak testing. The vacuum pressure of the sample canisters was monitored and recorded at
regular intervals throughout the sampling period. After completion of soil vapor sampling activities,
the vapor sample points were abandoned by removal of the vapor pin and silicone sleeve and
filling the borehole with neat cement grout to the slab surface.
Following completion of the field activities, the Summa canisters (5 samples), along with chain -
of -custody documentation, were shipped to Eurofins AirToxics in Folsom, California for laboratory
analysis of volatile organic compounds (VOCs) by United States Environmental Protection
Agency (EPA) Method TO-15 and ASTM-1946 (1 sample only).
3.6 Indoor and Outdoor Air Sampling
Prior to indoor and outdoor air sampling, Terracon completed a building survey form (Appendix
B) by interviewing Mr. Webb on November 3, 2015. Terracon also provided Mr. Webb a summary
sheet with information on indoor/outdoor air sampling for the on -site workers. A copy of the
summary sheet is included in Appendix B.
One indoor air (IA-01) and one outdoor air (OA-01) sample were collected concurrently with the
sub -slab soil vapor samples to assess the presence of VOCs in ambient air. The indoor air sample
canister was located approximately five feet from sub -slab soil vapor sample location SV-02. The
canister was located so that it did not interfere with routine business activities and the sample
intake was at a normal breathing height, approximately 5 feet above ground surface.
The outdoor air sample was collected upwind of the soil gas sample points and the sample intake
was located approximately 5 feet above ground surface. Both air samples were collected in
laboratory supplied 6-liter Summa canisters attached to a flow controller set for 8 hours and
analyzed for TO-15 Low Level. The laboratory reporting list was limited to compounds detected
in groundwater at the site.
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Atando Avenue Brownfields Site ■ Charlotte, NC
December 18, 2015 a Terracon Project No. 71157718
Following completion of the field activities, the Summa canisters (2 samples), along with chain -
of -custody documentation, were shipped to Eurofins AirToxics in Folsom, California for laboratory
analysis of volatile organic compounds (VOCs) by EPA Method TO-15-SIM.
3.7 GPR Survey
Terracon subcontracted Probe Utility Locating (PUL) to perform a ground penetrating radar (GPR)
survey of the area north of the manufacturing area. The GPR survey was performed on
September 10, 2015 to assess the presence of USTs that could have been a source of the
contaminants detected on the site. According to records from the NCDEQ, two documented tanks
and one potential UST were formerly located in the northern portion of the site. Since two USTs
had been removed from the northern site area, the regulatory records were unclear whether a
third tank remained at the site.
The GPR survey identified an area where the subsurface profile was indicative of an excavation
and backfilled by soils. The area coincided with the assumed locations of the two former USTs as
shown on Figure 2. No evidence of additional USTs was found during the GPR survey. A letter
from PUL stating the results is included as Appendix C.
3.8 Plat Survey
Terracon subcontracted Dewberry, Inc. of Charlotte, NC, to perform a land survey of the on -site
parcel. The survey was performed on November 12, 2015 while Terracon was conducting
sampling activities on the property. Dewberry used a combination of GPS devices, equipped with
the North Carolina Continuously Operating Reference Station (CORS) Network of Global
Navigation Satellite System (GNSS) base stations, and traditional laser -based total stations to
survey site features. In addition to the features required for a plat survey under the NC
Brownfields Program, Dewberry also surveyed the vertical top of casing elevation and the northing
and easting of each on -site monitoring well. The survey plat is included as Appendix D.
4.0 INVESTIGATIVE DERIVED WASTE
Investigative derived waste (IDW) from well installation activities and groundwater sampling
activities was contained in 55-gallon steel drums at the site. Drilling activities for monitoring wells
MW-6 through MW-10 and soil sampling activities created six drums of solid drill cuttings.
Groundwater sampling and well development activities created two drums of purge water. The
drums were properly labeled with "on hold pending analysis" labels. Concord Industrial Service of
Harrisburg, NC, transported the eight drums to an off -site facility for non -hazardous disposal. The
signed waste manifest is included as Appendix E.
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Atando Avenue Brownfields Site ■ Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71151718
The laboratory analytical reports and chain -of -custody record are attached in Appendix F. The
following sections describe the results of the testing.
5.1 Site Hydrogeology
Groundwater levels measured in the eleven on -site monitoring wells ranged from 11.26 ft bgs
(MW-8) to 19.29 ft. bgs (MW-2) on October 8, .2015. Groundwater elevations were calculated
using the field measurements and the updated top of casing elevation data from the land survey
conducted in November 2015. The elevation of the water table was not be determined in well
MW-1 due to the presence of free product. Groundwater depths and elevations are reported in
Table 2. A groundwater elevation contour map is provided as Figure 3.
Groundwater in the shallow aquifer zone appears to be flowing towards the south/southeast at
the site. The horizontal hydraulic gradient is approximately 0.007 ft/ft (MW-7 to Ivi in the
eastern portion of the site and somewhat steeper at 0.013 Wit: (MW-8 to MW-4) in the western
portion of the site. The gradient also appears to be elevated near wells MW-9 and MW-10 along
the northern property boundary. Only one well, DW-1, is screened in the deeper aquifer zone;
thus, horizontal gradients could not be determined for that zone. An upward vertical hydraulic
gradient of -0.015 ft/ft was calculated for well cluster MW4/DW-1 assuming a screened interval
of 10 ft for both wells (well construction information is not available).
5.2 Groundwater Sample Results
For the purpose of the discussion of groundwater sample analytical results, CVOCs are discussed
separately from non -chlorinated VOCs detected in the samples. The reason for segregating the
analytical results is based on the lateral distribution of the VOC concentrations suggesting
different sources for CVOCs and non -chlorinated VOCs. Groundwater sample analytical results
are summarized in Table 3. The laboratory analytical reports included in Appendix F.
Non -Chlorinated VOCs
The following non -chlorinated VOCs were detected during the August and October 2015
groundwater sampling events.
■ Benzene was detected in wells MW-2 (58.2 micrograms per liter [Ng/L]) and MW-3 (1.6
pg/L) at levels that exceed the 2L Standard of 1 pg/L. Benzene was not detected in the
other samples.
■ Naphthalene was detected in well MW-2 (87.9 pg/L) at a concentration above the 2L
Standard of 6 pg/L. Naphthalene was also detected below the 2L Standard in well MW-
3.
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Limited Site Investigation lrerr�con
Atando Avenue Brownfields Site ■Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
■ Ethylbenzene, p-isopropyltoluene, and xylenes were detected at concentrations below
their respective 2L Standards in well MW-2.
■ Non -chlorinated VOCs were not detected above laboratory reporting limits in wells MW-4
through MW-10 and DW-1.
cvocs
The following CVOCs were detected during the August and October 2015 groundwater sampling
events.
■ Tetrachloroethylene (PCE) in wells MW-5 (2,790 pg/L), MW-8 (163 pg/L), MW-9 (4,460
pg/L), MW-10 (2.7 pg/L), and DW-1 (148 pg/L) at concentrations above its 2L Standard of
0.7 pg/L. PCE was not detected above laboratory reporting limits in the other samples.
■ Trichloroethene (TCE) was detected in wells MW-5 (1,870 pg/L), MW-8 (25.5 pg/L), MW-
9 (2,880 pg/L), MW-10 (3.3 pg/L), and DW-1 (78.2 pg/L) at levels exceeding its 2L
Standard of 3 pg/L. TCE was not detected above laboratory reporting limits in the other
samples.
• cis- 1,2-Dichloroethene (cis-1,2-DCE) was detected in wells MW-5 (1,000 pg/L) and MW-
9 (5,500 pg/L) exceeding its 2L Standard of 70 pg/L. cis-1,2-DCE was also detected in
wells MW-8, MW10, and DW-1 at concentrations below the 2L Standard.
■ 1,1-Dichloroethene (1,1-DCE) was detected in wells MW-9 and DW-1 at levels below the
2L Standard. 1,1-DCE was not detected above laboratory reporting limits in the other
samples.
• Vinyl chloride was detected in wells MW-5 (41.3 pg/L) and MW-9 (6.5 pg/L) above its 2L
Standard of 0.03 pg/L. Vinyl chloride was not detected above laboratory reporting limits
in the other samples.
■ The following VOCs were detected at concentrations belowtheir respective 2L Standards:
trans- 1,2-dichloroethene (MW-5 and MW-9), 1,2-dichloroethane (MW-9), and chloroform
(MW-6).
• CVOCs were not detected above laboratory reporting limits in wells MW-2, MW-3, MW-4,
and MW-7.
■ Total CVOC concentrations were highest in wells MW-9 (12,957 pg/L) and MW-5 (5,714
pg/L) located near the northern property boundary. In these wells, CVOCs were detected
at concentrations up to two orders of magnitude higher than the highest non -chlorinated
VOC concentrations at the site.
■ Deep well DW-1 exhibited a significant total CVOC concentration (271 pg/L) when
compared to nearby shallow wells MW-2, MW-3, and MW-4 which did not contain CVOCs
above laboratory reporting limits.
In addition to the primary samples, QA/QC samples were also evaluated. DUP-01-10082015
(collected from well DW-1) had analytical results comparable to the primary DW-1 sample. The
equipment blank sample, EB-01-10082015, as well as the trip blank did not contain VOCs above
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Limited Site Investigation l�erracon
Atando Avenue Brownfields Site ■Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
laboratory reporting limits. Samples were received by the laboratory within the optimal
temperature range specified for EPA Method 8260.
5.3 Soil Sample Results
A total of six soil samples were collected near the northern site boundary in August and October
2015. Due to the number of compounds detected, laboratory results are summarized by sample
below. VOC soil sample results are discussed separately from semi -volatile organic compound
(SVOC) results. Results were compared to the NCDEQ IHSB Industrial Health Based Preliminary
Soil Remediation Goals (Industrial PSRGs), the NCDEQ IHSB Residential Health Based
Preliminary Soil Remediation Goal (Residential PSRGs), and the NCDEQ IHSB Protection of
Groundwater Preliminary Soil Remediation Goals (PoG PSRGs), updated September 2015. Soil
sample analytical results are summarized in Table 4 and the laboratory analytical reports are
included in Appendix F. Analytical results are shown on Figure 6.
vocs
Volatile organic compounds were not detected in the six soil samples at concentrations that
exceed the Residential or Industrial PSRGs.
MW-9 10'-15'
• Exceed PoG PSRG; PCE, TCE
■ Below regulatory standards; acetone (estimated), cis-1,2-DCE
MW-10 15'-18'
■ Below regulatory standards, acetone (estimated), methylene chloride (estimated)
SB-01 5'-7':
■ Exceed PoG PSRG; p-isopropyltoluene, naphthalene, n-propylbenzene
■ Below regulatory standards; toluene, ethylbenzene, n-butylbenzene, sec-butylbenzene,
tert-butylbenzene, isopropylbenzene, 1,2,4-trimethylbenzene, 1,3,5-trimethylbenzene
(estimated), and total xylenes (estimated)
SB-02 5'-7'
■ Below regulatory standards; n-butylbenzene, sec-butylbenzene, cis-1,2-DCE,
naphthalene (estimated), n-propylbenzene (estimated), and vinyl chloride (estimated)
SB-03 5'-7'
■ Exceed PoG PSRG; naphthalene
■ Below regulatory standards, methylene chloride (estimated), n-butylbenzene (estimated),
sec-butylbenzene (estimated), isopropylbenzene (estimated), n-propylbenzene, 1,2,4-
trimethylbenzene (estimated)
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Limited Site Investigation 1�C�rr�con
Atando Avenue Brownfields Site ■ Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
SB-04 (1-2 ft)
■ Exceed PoG PSRG; PCE
It should be noted that sample MW-9 10'-15'was the only soil sample that contained PCE and
TCE above the laboratory reporting limit and the PoG PSRG. The soil sample from boring MW-
9 also contained the highest concentration of PCE/TCE degradation product cis-1,2-DCE.
SVOCs
Samples MW-9 10'-15', MW-10 15'-18', and SB-04(1-2) contained no SVOCs above laboratory
reporting limits. SVOC results for the remaining samples are discussed below.
SB-01 5'-7':
■ Exceed Industrial PSRG; benzo(a)pyrene
• Exceed Residential PSRG; benzo(a)anthracene and benzo(b)fluoranthene
■ Exceed PoG PSRG; 1-methylnaphthalene, 2-methylnaphthalene and naphthalene
■ Below regulatory standards; anthracene (estimated), benzo(g,h,i)perylene (estimated),
benzo(k)fluoranthene (estimated), chrysene, fluorene (estimated), dibenz(a,h)anthracene
(estimated), fluoranthene; indeno(1,2,3-cd)perylene (estimated), n-nitrosidophenylamine
(estimated), phenanthrene, and pyrene
SB-02 5'-7'
■ Below regulatory standards (estimated); benzo(a)anthracene, benzo(a)pyrene,
benzo(b)fluoranthene, chrysene, fluoranthene, phenanthrene, and pyrene
SB-03 5'-7'
■ Exceed Industrial PSRG; benzo(a)anthracene, benzo(a)pyrene, benzo(b)fluoranthene,
benzo(g,h,i)perylene, benzo(k)fluoranthene, and indeno(1,2,3-cd)pyrene
■ Below regulatory standards; acenaphthene (estimated), anthracene (estimated),
chrysene, dinbenz(a,h)anthracene (estimated), dibenzofuran (estimated), fluoranthene,
fluorene (estimated), phenanthrene, and pyrene
Sample SB-03 5'-7' exhibited the highest SVOC concentrations.
5.4 Soil Vapor Sample Results
No leaks were detected in the sample manifolds during the initial dead -head or shut-in tests. After
purging, the purge tubing was screened for helium and VOCs. VOCs were not detected within
the purge tubing for each of the four soil vapor samples. During purging, helium was not detected
in the tubing for samples SV-01 and SV-04 but was detected at low concentrations in the sample
manifolds for samples SV-02 and SV-03. The helium concentrations detected in samples SV-02
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Limited Site Investigation l��rracon
Atando Avenue Brownfields Site ■ Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
and SV-03 during field screening correspond to leaks less than 0.2%; thus, the leaks did not pose
a concern for sample collection.
As described in Table 1, sample SV-03 was also analyzed for helium by the analytical lab to
obtain a more reliable leak quantification. Based on the laboratory analytical result for sample
SV-03 helium was not detected in the sample (<0.13%). A hypothetical worst -case scenario
concentration of 0.13% helium in sample SV-03 would correspond to a 1.5% leak, considering a
time -weighted average helium concentration of 8.9% inside the sampling shroud during sampling.
A 1.5% leak is well below the 10% leak threshold specified in the NCDEQ Vapor Intrusion
Guidance (2014); therefore, the QA/QC helium sample supports the integrity of the soil vapor
sample results.
Laboratory analytical results for the soil vapor samples were compared to the NCDEQ Soil Gas
Screening Concentrations (SGSL) for residential and non-residential exposure scenarios,
updated September 2015.
■ Sample SV-01 (office area) contained m,p-xylene and o-xylene above laboratory reporting
limits but below the SGSLs. No other constituents were detected above laboratory
reporting limits.
■ Sample SV-02 (safe room) contained naphthalene (43 pg/m3) which exceeded its
residential SGSL of 20.9 pg/m3. No other compounds were detected above the residential
or industrial SGSLs. Ethylbenzene, m,p-xylene, and o-xylene were detected at
concentrations higher than the laboratory reporting limits but lower than regulatory
standards.
• Sample SV-03 (locker room) contained PCE at a concentration above laboratory reporting
limits but PCE did not exceed the residential or industrial SGSLs. Helium analysis on
sample SV-03 yielded a non -detect (<0.13%) result. No other constituents were detected
in the sample above laboratory reporting limits.
■ Sample SV-04 (warehouse) contained PCE (4,100 pg/m3) which exceeds its industrial
(3,500 pg/m3) and residential (278 pg/m3) SGSLs. TCE (31 pg/m3) was found above its
residential PSRG of 13.9 pg/m3. Ethylbenzene, m,p-xylene and o-xylene were also
detected above laboratory reporting limits but below their respective SGSLs.
Soil vapor sample results are shown on Figure 8 and summarized on Table 5. The laboratory
analytical report is included in Appendix F.
5.5 Indoor and Outdoor Air Sample Results
PID and helium detector measurements at sample locations IA-01 and OA-01 were non -detect
(0.0 ppm). Laboratory analytical results for the indoor and outdoor air samples were compared
to the NCDEQ Indoor Air and Crawlspace Screening Concentrations (IASL) for residential and
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Limited Site Investigation l��rracon
Atando Avenue Brownfields Site ■ Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
non-residential exposure scenarios, updated September 2015. The values assuming a target
carcinogenic risk of 1.0E-06 and a target hazard quotient of 0.2 (i.e., the IASL(A) values on the
screening tables) were used for this assessment.
■ Indoor air sample IA-01 contained naphthalene (0.61 pg/m3) which exceeds the non-
residential IASL of 0.361pg/m3. Additionally, benzene (0.75 pg/m3) and chloroform (0.29
pg/m3) were detected at concentrations exceeding their respective residential IASL. PCE,
ethylbenzene, m,p- and o-xylene were detected above laboratory reporting limits but
below their residential and non-residential IASLs.
■ Theo utdoor/backg round air sample, OA-1, contained benzene above the residential IASL.
Laboratory results also indicate m,p-xylene, and o-xylene at concentrations below the
residential and non-residential IASLs. No other VOCs were detected above laboratory
reporting limits in sample OA-1.
Air sample results are shown on Figure 8 and summarized on Table 5. The laboratory analytical
report is included in Appendix F.
6.0 SUMMARY
Terracon performed activities at the site in August, October and November 2015. A brief summary
of these activities and associated results is provided below.
■ A GPR survey was performed to determine the presence of reportedly abandoned USTs
in the northern portion of the site. The GPR survey identified two former UST locations
where the subsurface profile was indicative of backfilled soils but no other USTs or former
UST locations were identified in the northern portion of the site.
■ A land survey was performed at the site to obtain a survey plat that will be part of the
Brownfields Agreement. Northing, easting and elevation measurements for each of the
on -site monitoring wells were also surveyed.
■ Shallow monitoring wells MW-9 and MW-10 were installed near the northern property
boundary to evaluate impacts from potential up -gradient sources.
• Groundwater samples were collected from 10 on -site monitoring wells. A sample was not
collected from well MW-1 due to the presence of free product in the well.
o Groundwater levels were measured between 11.26 and 19.29 ft bgs in the on -site
monitoring wells.
o Groundwater flow direction at the site is towards the south/southeast.
o CVOCs were detected above the 2L Standards in wells IAW-5, MW-8, MW-9, MW-
10, and deep well DW-1.
o CVOC concentrations were highest in groundwater samples from wells MW-9 and
MW-5.
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Limited Site Investigation 1 rerracon
Atando Avenue Brownfields Site .Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
o CVOCs were detected at concentrations up to two orders of magnitude higher than
the highest non -chlorinated compounds in the groundwater.
o Non -chlorinated VOCs were detected above the 2L Standards in wells MW-2 and
MW-3.
• Six soil samples were collected in the vicinity of wells MW-5 and MW-9 at sample depths
ranging from 2-18 ft bgs.
o VOCs were not detected at concentrations exceeding the residential and industrial
PSRGs; however, four of the six samples had VOC detections exceeding the PoG
PSRG.
o SVOCs were detected at concentrations exceeding industrial and residential
PSRGs in two of the six samples. The remaining four samples did not contain
SVOCs above regulatory standards.
■ Four sub -slab soil vapor samples were collected in the office and manufacturing ares of
the on -site facility. Additionally, one indoor air and one outdoor air sample were collected
concurrently with the soil vapor samples.
o PCE was detected at a concentration exceeding the industrial SGSL in SV-04.
(warehouse area). No other compounds were detected exceeding the industrial
SGSL in the sub -slab vapor samples.
o VOCs were detected at levels exceeding the residential SGSL in samples SV-02
and SV-04.
o VOCs were not detected above regulatory standards in samples SV-01 (office
area) and SV-03 (locker room).
o The indoor air sample contained naphthalene at a concentration exceeding the
non-residential (and residential) IASL. It also contained benzene and chloroform
above residential .IASLs. No other compounds were detected above regulatory
standards.
o The outdoor air sample contained benzene above residential IASLs. No other
compounds were detected above regulatory standards.
7.0 CONCLUSIONS AND RECOMMENDATIONS
Based on the scope of services described in this report and subject to the limitations described
herein, Terracon provides the following conclusions.
• Groundwater results indicate that CVOCs are present at concentrations exceeding
regulatory standards near the north -central property boundary at the site. CVOC
concentrations were highest in well MW-9, which is located at the northern property
boundary. The shallow and narrow lateral occurrence of CVOCs at wells MW-9 and MW-
5 suggests that a surface or near -surface off -site CVOC source is relatively close to the
northern property boundary.
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Limited Site Investigation Merracon
Atando Avenue Brownfields Site ■Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
• The presence of CVOCs in deep well DW-1 but not in the surrounding shallow wells
indicates that the high density chlorinated compounds have migrated to a deeper, down -
gradient zone in the aquifer. CVOCs were not detected in shallow down -gradient wells at
the site.
■ The potential off -site CVOC source is believed to be located on the adjacent parcel to the
north of the site where the Dy-Dee Diaper business formerly operated and where several
rusted 55-gallon drums and ASTs were observed by Terracon and others.
■ Terracon concludes that there is sufficient evidence that the property owner is not
responsible or liable for the CVOC contamination in the northern portion of the site.
■ Non -chlorinated VOCs such as benzene and naphthalene were detected in monitoring
wells MW-2 and MW-3 above regulatory standards. Terracon concludes that these results
are consistent with historical groundwater results and are likely associated with the on -
site LIST releases that are subject of a separate investigation (IHSB Incident No.
NONCD0001992).
• Both chlorinated and non -chlorinated VOCs, as well as SVOCs were detected above
regulatory standards in six soil samples that were advanced in the vicinity of wells MW-5
and MW-9.
■ Detections of PCE in near -surface soil sample SB-04 (1-2) are believed to be the result of
the following processes:
o SB-04 is located directly down -gradient of the off -site ASTs and rusted drums
located on the adjacent Dy-Dee Diaper property to the north. Additionally, boring
SB-04 is located in a topographic low spot that appears to be an east -west trending
drainage ditch to direct stormwater flow during storm events. This suggests that
an offsite spill/source product on the adjacent property to the north would likely be
washed towards the area where boring SB-04 was advanced.
o During installation of well MW-9, soil cuttings were temporarily staged in the area
where SB-04 (1-2) was collected. The soil cuttings from well MW-9 are known to
be impacted by PCE (see sample results for MW-9 10'-15'). It is possible that
residual amounts of the temporarily staged soil cuttings from well MW-9 were not
removed and placed into 55-gallon IDW drums, thus, PCE from the remaining
impacted soil could have leached into the ground at boring SB-04. Terracon
attempted to collect a shallow soil sample on the opposite side of well MW-9 but
could not advance the hand auger due to an asphalt ground cover.
■ Sub -slab soil vapor conclusions:
o PCE was detected exceeding the industrial SGSL in sample SV-04 (manufacturing
area). Additionally, TCE was detected above its residential PSRG in sample SV-
04. The presence of these two CVOCs in the sub -slab sample located near well
MW-5 is thought to be due to off -gassing from impacted groundwater originating
from the suspected off -site source. Although screening levels were exceeded, it
should be considered that the concrete floor slab in the manufacturing area is
relatively thick (8 inches were measured at SV-04 and the tenant reported slab
Responsive ■ Resourceful ■ Reliable 18

Limited Site Investigation l�err�con
Atando Avenue Brownfields Site ■ Charlotte, NC
December 18, 2015 ■ Terracon Project No. 71157718
thicknesses up to 13 inches) and may perform better than average in restricting
vapor intrusion. The warehouse also has large bay doors at the eastern and
western ends of the building for truck deliveries and pickups. The doors appear to
be open during work hours. The increased slab thickness suggests a lower risk
for vapor intrusion and the increased ventilation in the warehouse area suggests
that indoor air is unlikely to have high concentrations of VOCs. Terracon
recommends collecting an indoor air sample in the warehouse area to verify indoor
air concentrations are below standards.
o Sample SV-02 (safe room) contained naphthalene exceeding its residential SGSL.
The area where sample SV-02 was collected is near the break room and is not
continuously occupied. Though the source of the naphthalene is unknown, it is
thought to be related to the UST incident at the site. No industrial SGSLs were
exceeded in the locker room/safe room/office area samples. In addition, no SGSLs
were exceeded in the office (and locker room) area where workers are more likely
to spend an extended period of time. This suggests that workers at the site are
not immediately endangered by vapor intrusion in these areas.
The presence of CVOCs (in groundwater, smear zone soil, and soil vapor) in the northern
portion of the property appears to be related to an up -gradient off -site source.
Remediation would presumably be the responsibility of the adjoining landowner; however,
the contamination on the subject property may be addressed within the Brownfields
Program.
Responsive ■ Resourceful ■ Reliable 19

r
sSite �, r z,._�,
l
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N argev W.
1115/H5 SITE LOCATION MAP FIGURE
o�mPSn D.. R, erracon
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52TATANDOAME. 1
t yKA.2ppp leg OLO AIDBwa ".8 E OUTAOREM.' CHARLOTTE. NO
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.Rmle.wua�Im�wwa+wnwcwNrco..aw.
ar erracon
ComuAing En®rleershSLienlius ATANDO AVENUE SROWNFIELDS SRE
-aww tica�.>rw ey:
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Table 1
Sampling and Analysis Plan
Atando Avenue Brownffelds Site
527 Atando Ave
Charlotte, Mecklenburg Couny, NC
Terracon Project No. 71IS7718
SAMPLE ID
SAMPLE DATE
SAMPLE MEDIUM
SAMPLE INTERVAL
ANALYTICAL METHOD
MW-2
100815
Groundwater
? - 34 ft bgs
8260 1 4-Dioxane
MW-3
100815
Groundwater
7-33 ft bgs
8260; 1,4-Dioxane
Mw-4
10/08/15
Groundwater
7 - 32 ft bgs
8260 14-Dioxane
MW-5
10/08/15
Groundwater
7 - 30 ft bgs
8260; 1,4-Dioxane
MW-6
100815
Groundwater
20-30ftbs
'8260; 1,4-Dioxane
MW-7
100915
Groundwater
18 - 28 ft bgs
8260; 1,4-Dioxane
Mwe
10/08/15
Groundwater
24-34ftb s
8260.14-Dioxane
MW-9
08/27/15
Groundwater
10-25ftb s
8260;14-Dioxane
MW-10
08 27 15
Groundwater
10-25 ft b s
8260; 1,4-Dioxane
OW-1
1008/15
Groundwater
? - 86 ft Ings
8260,1,4-Dioxane
MW-9 10'-15,
08/26/15
Soil
10-15 ft bgs
8260; 8270
MW-1015'-18'
082615
Soil
15-18 ft bgs
8260;8270
SB-015'-7'
08/26/15
Soil
5-7 ft Ings
8260- 8270
SB-02 5'-7'
08/26/15
Soil
5-7 It blis
8260; 8270
SB-03 5'-7'
08/26/15
Soil
5-7 ft bgs
8260; 8270
5B-04 1-2
11/11/15
Soil
1-2 ft bgs
8260
IA-01
11/12/15
Indoor Air Gas
5 ft ags
TO-15 Low Level•
OA-01
11/12/15
Outdoor Air Gas
5fta s
TO -IS Low Level•
SV-01
11/12/15
Soil Vapor (Gas)
Sub -Slab
TO-15e
SV-02
31 1 15
Soil Va or Gas
Sub -Slab
TO-15a
SV-03
11 12 15
Soil Vapor Gas
Sub -Slab
TO.15e; Helium
SV-04
11/12/15
Soil Vapor (Gas)
Sub -Slab
TO-15a
Notes:
ft bp -feet below groural surface
it ab-fee t abwe ground surface
2- indicates that the depth to the too of the screened interval h unknown
-reported evmpourds for TO.15 anal T615 SIM are limited to compounds detecxW In site groundvnter eW WtWe:
tetmehbmethylene, trkhbmethere, ck-1,2-0khloieethene, tons-1,2dkhlometheim, S,ldkhbroethene, 1,2dkhlametheio, NmA d,bdde, beezenen cNomform, et"Ireme'm,
mArthale e, total ayelre,"o-xykne -

Table 2
Well Construction and Groundwater Elevations (October 2015)
Atando Avenue Brawnfields Site
527 Atando Ave
Charlotte, Mecklenburg Couny, NC
Terracon Project No. 7115771E
DATE SCREEN INTERVAL
WELL I.D. (ft bl5
MEASURED )
SHALLOW MONITORING
TOP OF CAS GROUNDWATER
DEPFHTO WATER
ELEVATION ftBTO ELEVATION
ft ms1 ( ft msI
WELLS
MW-1
10/08/IS
?-34
743.39
18.15e
NA
MW-2
10/08/15
?-34
743.73
19.29
724.44
MW-3
10/08/15
?-33
738.79
14.43
724.36
MWA
10/08/15
?-32
739.04
14.47
724.57
MW-5
10/08/15
?-30
740.75
12.76
727.99
MW-6
10/08/15
20-30
742.90
17.28
725.62
MW-7
10/08/15
18-28
743.93
16.27
727.66
MW-8
10/08/15
24-34
739.91 -
11.26
728.65
MW-9
10/08/35
10-25
741.16
11.75
729.41
MW-10
10/08/IS
10-25
741.79
12.58
729.21
DEEP MONITORING
WELLS
DW-1 10/08/15 ?-86
1 739.14 13.78 725.36
Notes:
ft his - feet below land surface
ft BTOC - feet below top of casing
NM - Not measured
NA- Not applicable
ft msl - feet above mean sea level
' Depth to water
Well construction data obtained from HRP report and Terrawn's field measurements.
No well construction Information available for wells M W-1 through Al and DW-1.
Well top of casing elevations based on November 2015 survey by Dewberry.

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Table
Sall Analytical Results (August/Nwember 2015)
Amndo Avenue BrowMklds Site
527Atando Ave
Garlatte, Mecklenburg Count', NC
Temacon P.Ject No. 71157718
Analyze
PoG PSRG
Residential
MG
Indulbial
PSRG
Sample ID:
mpie Date:
Simple
Intercal IN
MM1VA ]D'•
ss'
08/26/15
1015
MW'-
IB'
08/26/15
1538
SB-015'-7'
08/26/15 1
5-7
5'1015
S"2-7'
08/26/15
5.7
58035--T
08/26/15
5J
S1104(1-2)
11/11/IS
S-7
Volatile Organic Compounds (EPA Method SI60)
Acetone
24,000
12,o00,000
Io0,000,00U'
273 1
15.6)
<123
<314
<5740
<6.1
n-Burylbensene
2.400
110,000
110,"
<4.1
"A
2520
SA
160J
<6.1
secAurylbemmne
2,200
15g00o
Iwjow
<4.1
<4.4
827
63
1761
<6.1
tert-0urylbenrem
1 11700
1800o0
IN=
« 1
0A
208
63
<287
<6.1
ds-1,20chlismadmne
360
314000
4 ,oco
0.1
<4.4
<123
25.3
<2871"..,
EMNbentene
8,100
5,W0
I5,o00
<0.1
<0A
46S
6J
<287
Isopropdbentene
NS
NS
NS
<4.1
<4.4
1520
<5J
11S 1
p-lsopropyltoluene
wo
NS
NS
<0.1
<0A
I=
c J
<287
Methylene Chloride
23
57,000
640,000
<0.1
51 J
<091
Q2.8
no JNaphthalene
210
3,800
17,000
<0.1
<0A
1 2760
SA 1
612n-Propylbensene
S,Soo
260,000
260,000
<0.1
uA
1 _ 6160_
2.91
326Tetrachloroethene
5
16,00o
78,=
1 201
<0.4
<123
<5.7
<287Trkhlomethene
IB
820
3,800
1 449
<OA
<123
6J
<287Toluene
5,500
820,000
820,000
<4.1
<0.4
239
<5.7
<287
1.2,06rlmethylbemero
6,700
11,wo
48,000
"A
0A
187
<5.7
1821
<6.1
1,3,5-Trimet"benrene
6,700
156,000
182.000
<4.1
<4.4
65.4 J
6.7
<287
<6.1
Vnyl Chloride
0.19
59
1,700
41.1
<8.9
<206
211
<570
<32.1
Total gNe es
6'"
III'm
258,000
<8.1
<8.9
1010
<11.0
<574
<12.1
ma,sxNero
NS
110,000
388,000
<8.1
<8.9
1010
<11A
<574
<12.1
u%Nero
NS
1 130,000
_ 0Y1000
<0.1
<E.4
96A 1
<53
<287
<6.1
Sem Wolatlle Organic Compounds (EPA Method $270)
Amnaphthene
-8,460
720,000
9,000,000 -
002
<391
<388
<406
ism 1
NA
Anthmcene
660,000
3,603.000
06,000,0D0
<4p2
<391
1291
<406
29701
NA
8enm(a1enthracem
IN
IN
2,900
<402
<391
461
1091
97M
NA
Bento(a)pyrene
59
16
290
<A03
<391
401
91.21
IBM
NA
Bento(b)Ruorinthene
I NS
420
1,800
<402
<391
638 1
1591
13M
NA
Benso(g.hApeMene
1 59
16
290
<41)2
<391
263)
006
Sw
NA
Benm(k1fluomnthene
I No
160
;900
002
<391
2861
<406
7200
NA
arysene
1 18,000
16,000
290,=
<402
<391
450
1091
9410
NA
Dibem(a,h)anthmmne
IN
16
IN
<402
<391
851
<406
17701
NA
Dibenmfumn
5,200
IS.=
200AW
<002
<391
<388
<406
782 1
NA
Fluomnthene
3301000
a80,o00
6,000,000
<002
<391
ion
241)
22000
NA
Fluorene
56.W0
480,000
6,=,=
<402
<393
1811
006
15901
NA
Indenoj1,2,3stl)pymro
2,000
160
2.900
<002
<391
2301
<406
5310
NA
1-Methhrophtivemne
55
18,=
73,01q
<402
<39]
1090
<406
0520
NA
2-Me6Nmph IslItre
1,600
"'wo
6001M
<402
<391
I 1620
<406
0520
NA
Naphthalene
210
3,800
17,"
002
<391
no
<406
0520
NA
NNltmeadiphenylamine
NS
110,000
4X,000
002
<391
3721
<406
<0520
NA
Phenanthrene
6B,m
NS
NS
002
<391
569
215 1
U300
NA
Pyrene
320,000
3613,000
jW0,000
<402
<391
741
275 J
16200
NA
Notes:
Dnly detested compounds arc shown.
C ncentmdom arc mported In micrograms per kllegram (pgft)
9• indicates an estimated cancentmtlon abow the method detection limit but below the labo story reporting Omit.
it bgs - feet below ground .,it.
NA - Not analysed
NS - no smnd.ml r
PoG - Protecdon of Groundwater
PSRG - NW EQ Inatthm Hazardous Sims Branch Preliminary Soil Remedietion Goals, updated 5epmmber 2015.
ncentretbM NghOillyped in grey excid their mtpectNe protection of groundwater MG.
6-entratlans highnghtedInwil exceedthelrrum"Weprat negmundwater andnesidemlal health Gsed PSRG.
cemnetlons hlgN_gi hted-ngeemeed tholnu, h orotattbn of Ewa r sWa tle ust t b
PSRG.

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7110718
l�erracon
SOIL BORNG LOCAnON MAP
FIGURE
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OOTOBER 3045
ATANDO AVENUE BROWNFIELOS SITE
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OIWRLOTTE. NC
FIGURE
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FIGURE
AIR SAMPLE LOCATIONS
ATANDO AVENUE BROWNFIELOS SITE
527 ATANDOAVENUE
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