WI0400198_QUARTERLY STATUS REPORT_20130812

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August 8, 2013
Mr. Thomas Moore
North Carolina Department of Environment and Natural Resources (NCDENR)
Division of Waste Management - UST Section
585 Waughtown Street
Winston-Salem, North Carolina 27107
UIC Program Staff
DWQ - Aquifer Protection Section
1636 Mail Service Center
Raleigh, NC 27699-1636
DWQ - Aquifer Protection Section
Winston-Salem Regional Office
585 Waughton Street
Winston-Salem, NC 27107
RE: Quarterly Status Report
Former Knollwood Gulf Station (BP 24163)
381 Knollwood Street
Winston-Salem, Forsyth County, North Carolina
Injection Permit W10400198
NCDENR Incident No. 6400
URS Project number: 38436760
Dear Mr. Moore:
RECE[VEDIMENROW0
Aquifer ptofmtiarl Section
Please find enclosed the Quarterly Status Report for the above referenced site. The report
documents ongoing injection performance monitoring activities including the most recent
groundwater sampling event performed on May 31, 2013. The report also documents the
activated sodium persulfate (ASP) injection performed in June 2013.
The enclosed report is intended to continue the semi-annual reporting schedule proposed
in the site Corrective Action Plan (CAP), The report is also intended to satisfy the
quarterly reporting schedule requirement specified in Part VD, Item 2 of the Renewal
Issuance of Injection Permit WI0400198. Should you have any questions regarding this
submittal, please do not hesitate to contact me at [phone] or [e-mail].
Sincerely,
URS C rporation - North Carolina
Caleb Krouse, PE
Project Manager
Enclosure
cc: Charles Sherren, Thruway Shopping Center, LLC (CD); ENFDS, BP (electronic); Project
File (electronic)
URS Corporation — North Carolina
1600 Perimeter Park Drive, Suite 400
Morrisville, NC 27560
Tel: [phone]
Pax:919-461-1415

QUARTERLY STATUS REPORT
FORMER KNOLLWOOD GULF STATION (BP 24163)
381 KNOLLWOOD STREET
WINSTON-SALEM, FORSYTH COUNTY, NORTH CAROLINA
INCIDENT NO.: 6400
RISK RANK: INTERMEDIATE
LAND USE CLASSIFICATION: TNDUSTRIALICOMNIERCIAL
URS PROJECT NO.: 38436760
RECE111EAIDENRI W0
Aquifer protection Seotton
Prepared for:
Atlantic Richfield Company (ARCO)
A BP Products North America Inc. bp
affiliated company
850 East 49" Street
MBC-3 Room 103B
Cuyahoga Heights, Ohio 44125 0
August 8, 2013
Prepared by:
URS Corporation — North Carolina
1600 Perimeter Park Drive, Suite 400
Morrisville, North Carolina 27560
Tel. [phone]
Fax [phone]

CERTIFICATION PAGE
FORMER KNOLLWOOD GULF STATION (BP 24163)
391 KNOLLWOOD STREET
WINSTON-SALEM, FORSYTH COUNTY, NC
Report Date:
August 8, 2013
Groundwater Incident Number:
6400
Land Use Category:
Industrial/Commercial
Risk Classification:
Intermediate (Gross Contamination Level Eaceedences)
Responsible Party:
Atlantic Richfield Company
% BP Products North America, Inc
850 East 49`h Street
MBC-3 Room 103B
Cuyahoga Heights, Ohio 44125
Attn: Greg Frisch
Current Property Owner:
Thruway Shopping Center, LLC.
7501 Wisconsin Avenue, Suite 1500
Bethesda, Maryland 20814-6522
[phone]
Attn: Charles Sherren or Zane Zynda
Report Prepared By:
URS Corporation - North Carolina
1600 Perimeter Park Drive, Suite 400
Morrisville, North Carolina 27560
[phone]
Release Information:
Release of an unknown quantity of gasoline from an
underground storage tank product line 1 ancillary piping
prior to September 1983.
Release Location:
Latitude: 36005'25.94"N (Topographical Map)
Longitude: 80° 1 Tl 1.79"W
I, Caleb Krouse, a licensed engineer for URS Corporation — North Carolina, do attest that the
information con •ned in this report is correct and ,R Mt1fooe best of my knowledge.
y� '[N. AR ff
FESS 0�
�.4 SEA, $ Z q 8 a13
Caleb Krouse, P.E. _ -Hvi i ;3 r - Date
URS Corporation -- North Carolina
URS Corporation -- North Carolina is licensed to (&c9 ogylengineering in North
Carolina The certification numbers of the corporatiioon�ra�x� -328 and C-2243, respectively.
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TABLE OF CONTENTS
1.0
INTRODUCTION............................................................................................_..............
1-1
1.1 Site Description....................................................................................................
1-1
1.2 Project Background..............................................................................................
1-1
2.0
ACTIVATED SODIUM PERSULFATE INJECTION ...................................................
2-1
2.1 Utility Clearance..................................................................................................
2-1
2.2 Site Set-up and Chemical Handling.....................................................................
2-1
2.3 Injection...............................................................................................................
2-I
2.4 Waste Management .................. ............ ...... ..........................................................
2-1
3.0
INJECTION PERFORMANCE MONITORING............................................................3-1
3.I Groundwater Sampling Procedures.....................................................................
3-1
3.2 Purge Water Management....................................................................................
3-1
4.0
RESULTS AND DISCUSSION .................................................. ....................................
4-1
4.1 Groundwater Sampling Results...........................................................................
4-1
4.2 Performance Monitoring Discussion...................................................................
4-1
5.4
CONCLUSION AND RECOMMENDATIONS............................................................
5-1
6.0
STATEMENT OF LIMITATIONS..................................._.._..........................................6-1
7.0
REFERENCES ...........................••---._.............................................................................7-1
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TABLE OF CONTENTS
TABLES
Table 1 Monitoring Well Construction Data
Table 2 Summary of May 31, 2013, Groundwater Results Compared to NC Gross
Contamination Levels
Table 3 Groundwater Field Parameter Results, May 31, 2013
FIGURES
Figure 1 Location Map
Figure 2 Site Map
Figure 3 Activated Persulfate Second Injection Lvent Summary (June 2013)
APPENDICES
Appendix A
Winston-Salem Fire Hydrant Permit 427414
Appendix B
Injection Services Report [Vironex, 2013)
Appendix C
Waste Manifests
Appendix D
Historical Groundwater Elevation Data
Appendix E
Historical Groundwater Analytical Summary
Appendix F
Laboratory Analytical Report
Appendix G
Historical Groundwater Field Parameter Data
Appendix H
ASP Injection Performance Monitoring Parameter Time -Trend Graphs
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SECTIONON E INTRODUCTION
URS Corporation - North Carolina (URS), on behalf of Atlantic Richfield Company (ARCO). a
BP Products North America Inc. affiliated company, is pleased to submit this Quarterly Data
Report for Former BP Station No. 24163 located at 381 Knollwood Street, Winston-Salem,
Forsyth County, North Carolina (site). The report is intended to continue the semi-annual
reporting schedule proposed in the site Corrective Action Plan (CAP) (URS, 2011). This report is
also intended to satisfy the quarterly reporting schedule requirement specified in Part VII, Item 2
of the Renewal Issuance of Injection Permit WI0400198 (NCDENR, 2013). The report
documents the activated sodium persulfate (ASP) injections and associated performance
monitoring completed at the site. Specifically, the report documents the June 2013 injection
activities and presents procedures and results for the groundwater sampling event performed in
May 2013.
1.1 SITE DESCRIPTION
The site is located on the eastern side of Knollwood Street, southeast of its intersection with
Interstate 40 Business in Winston-Salem, North Carolina. A USGS topographic map showing the
site location and surrounding area is provided as Figure 1. The site property is approximately 0.5
acres, is covered by asphalt and concrete, and was formerly developed as a retail fueling
station/convenience store with gasoline, diesel, waste oil, and kerosene underground storage
tanks (USTs). All UST systems and buildings have been removed from the site and the property
is currently used as a parking lot for an adjacent shopping center. Site geology, hydrogeology,
UST removal history, petroleum release history, environmental investigation and remediation
activity history, surrounding property uses, and site ownership history were presented in detail in
the site CAP (URS, 2011).
A site map showing current and historical site features, including, groundwater monitoring well
locations, is provided as Figure 2. Currently, ten Type II monitoring wells (MW-3, MW-5R,
MW-6, MW-8R, and MW-14 through MW-19) and one Type III monitoring well (MW-6i) are
located at the site. Monitoring; well construction details are presented in Table 1.
1.2 PROJECT BACKGROUND
The ASP injection was performed in accordance with the CAP which was approved by the North
Carolina Department of Environment and Natural Resources (NCDENR) Division of Waste
Management (DWM) UST Section (NCDENR, 201la). An Underground Injection Control
(UIC) permit application, summarizing the proposed injection activities, was submitted to the
NCDENR Division of Water Quality (DWQ) on July 5, 2011. Injection Permit No. WI0400198
was issued by the DWQ on August 9, 2011 (NCDENR, 2011 b).
Pre -injection investigation and pilot test activities performed in October 2011 were previously
documented in a summary report, dated April 23, 2012, submitted to both the DWQ and the
DWM UST Section (URS, 2012a). A fanal ASP injection design, refined based on the results of
the pre -design investigation and pilot test results, was also presented in the April 2012 report.
The first ASP injection event was performed at the site between June 4, 2012, and June 9, 2012.
Injection activities and groundwater sampling performance monitoring were performed in
accordance with the approved CAP and Injection Permit No. WI0400198, Baseline data, June
2012 ASP injection activities, and post -injection sampling data through September 2012 were
documented in the Activated Sodium Persulfate Injection Completion Report (URS, 2012b).
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SECTIONONE
INTRODUCTION
Groundwater sampling events performed in December 2012 and February 2013 were
documented in a Semi -Annual Data Report (URS, 2013b).
A permit renewal application was submitted to NCDENR DWQ on March 26, 2013, (URS,
2013a) in advance of the July 31, 2013, permit expiration date. Renewal Issuance of Injection
Permit W10400198 was issued by the DWQ on May 24, 2013 (NCDENR, 2013).
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SECTIONTWO ACTIVATED SODIUM PERSULFATE INJECTION
This section summarizes the second ASP injection event performed at the site between May 30,
2013, and June 10, 2013.
2.1 UTILITY CLEARANCE
Taylor, Wiseman, and Taylor (TWT) performed private utility location services on May 30,
2013, prior to injection activities at the site. TWT also pre -excavated several planned injection
locations near known utilities. Pre -excavation was performed using air knife and vacuum
extraction equipment to a depth of 6.5 feet below ground surface (bgs) at planned injection
locations Iocated within 5 feet of known underground utilities.
2.2 SITE SET-UP AND CHEMICAL HANDLING
Sodium persulfate powder and 25% NaOH solution activator were purchased from FMC
Corporation of Philadelphia, Pennsylvania (FMC) and were transported to the site in accordance
with Federal, State, and local regulations. Prior to ASP solution mining, sodium persulfate bags
and NaOH drums were stored on pallets in locked, metal cargo containers temporarily placed
north of the proposed injection area. Injection contractor Vironex, Incorporated (Vironex)
utilized a gas -powered fork-lift to transport the materials to a designated mixing area inclusive of
a truck -mounted chemical injection rig. Chemical containers within and surrounding the
injection rig were stored within secondary containment. Water mixed into the ASP solution was
drawn from a fire hydrant located just west of the site property boundary. Fire hydrant water
usage was permitted by the City of Winston-Salem (Appendix A).
The injection area was enclosed with temporary 6-foot chain -link fence during injection. Traffic
signage was displayed at site entrances in accordance with the Manual on Uniform Traffic
Control Devices (MUTCD).
2.3 INJECTION
From June 3, 2013, to June 6, 2013, Vironex, with oversight by URS personnel, injected 6,826
gallons of ASP solution across 23 injection locations at the site. The total ASP solution included
6,726 pounds of sodium persulfate and 855 gallons of 25% NaOH solution activator. Injection
locations were positioned on a 10-foot grid staggered from the June 2012 injection locations
(Figure 3). Daily summaries of injection volumes and vertical intervals are included in the
Injection Services Report (Vironex, 2013) included as Appendix B. The report includes photos
of the injection system and site layout and presents volume totals, pressures, and average flow
rates for each injection point.
Injection was performed using a 5-foot stainless steel well screen the bottom of which was
driven to 17 feet bgs by a Geoprobe(9 6620 DT. The ASP solution was mixed on -site and
pumped to the well screen through a progressive cavity pump. Specific injection intervals and
volumes are detailed in Appendix B and summarized on Figure 3.
Following the injection, URS submitted an Injection Event Record and associated construction
and abandonment records to the DWQ (URS, 2013c).
2.4 WASTE MANAGEMENT
Utility clearance utilizing air knife resulted in the accumulation of two 55-gallon drums of
petroleum contaminated soil waste. The drums were picked up by Shamrock Environmental
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SECTIONTWO ACTIVATED SODIUM PERSOLFATE INJECTION
(Shamrock) on June 10, 2013, and properly disposed of off -site in accordance with applicable
Federal, State, and local regulations. Waste manifest copies are included in Appendix C.
Empty polyethylene drums and wooden pallets utilized to transport the NaOH solution to the site
were transported off -site by Shamrock on June 10, 20131 for re -use or recycling.
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SECTIONTHREE INJECTION PERFORMANCE MONITORING
3.1 GROUNDWATER SAMPLING PROCEDURES
Groundwater sampling was performed prior to the June 2013 injection on May 31, 2013. The
event included sampling of monitoring wells MW-3, MW-5R, MW-8R, MW-18. and MW-19 in
accordance with the CAP and approved UIC monitoring plan. Prior to sampling, groundwater
levels were gauged in each of the Eve monitoring wells using a water level meter
decontaminated with soap and water prior to each measurement. May 2013 water level
measurements are presented along with historical gauging data in Appendix D.
Following gauging, each well was purged and sampled with a new disposable polyethylene
bailer and nylon line. The monitoring wells were purged of three well volumes, except wells
MW-3 and MW-19, which were purged dry prior to removal of three well volumes and allowed
to recover prior to sampling. Groundwater from each well was transferred to pre -labeled,
laboratory -prepared containers and promptly placed on ice with a temperature and trip blank.
The samples were shipped under chain -of -custody via overnight courier to Accutest Laboratories
Southeast {Accutest} and analyzed for benzene, toluene, ethylbenzene, and xylenes (BTEX) and
methyl tert-butyl ether (MTBE) by EPA Method 6200B, sulfate by EPA Method 300, and carbon
dioxide by EPA Method 4500-CG2.
Groundwater pH, dissolved oxygen (DO), temperature, oxidation-reduction potential (ORP), and
specific conductance were measured in the field at each well using a calibrated bellow Springs
Instrument YSI-5569 water quality meter.
3.2 PURGE WATER MANAGEMENT
Purge water for all wells was containerized in a properly labeled 55-gallon drum temporarily
staged on -site. The drum was picked up on .tune 10, 2013, by Shamrock and transported off -site
for disposal in accordance with applicable Federal, State, and local regulations. A waste manifest
for the purge water drum is included in Appendix C.
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SECTIDNFOUR RESULTS AND DISCUSSION
4.1 GROUNDWATER SAMPLING RESULTS
Groundwater laboratory analytical results for the May 31, 2013, samples are presented in
Table 2. Historical analytical data are presented in Appendix E. The laboratory analytical report
for the May 2013 groundwater sampling event is included as Appendix F. Groundwater field
parameter data for the May 31, 2013, samples are presented in Table 3. Historical field
parameter data are presented in Appendix G. Time -trend graphs of various parameters
associated with injection performance monitoring are included in Appendix H.
4.2 PERFORMANCE MONITORING DISCUSSION
Performance monitoring results through February 20I3 are discussed in detail in the Semi -
Annual Data Report (URS, 2013b). The following list provides a brief summary of notable
performance monitoring trends between February 2013 and May 2013, prior to the second
injection.
+ Targeted contaminant concentrations, including benzene. in monitoring wells MW-5R and
MW-8R had previously shown an increasing contaminant rebound trend after the June
2012 injection. The increasing contaminant concentrations appear to have leveled off in
both wells. The benzene concentration in MW-8R remains above the GCL but has
decreased over the last two monitoring events.
■ MW-18 and MW-19 contaminant concentrations have remained relatively stable near pre -
injection conditions.
+ Injection performance monitoring indicators Caz, sulfate, specific conductivity, and pH
have generally continued a pattern of consistent decrease through May 2013 following an
initial post -injection spike.
• MW-3, sampled as a downgradient "sentinel" monitoring well, has not exhibited a notable
response as a result of the injection in any of the monitoring parameters tested.
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SECTIONFIVE CONCLUSIONS AND RECOMMENDATIONS
Based on the observations and data collected at the site through the June 2013 ASP injection,
URS presents the following conclusions.
• Benzene concentrations were reduced in monitoring wells MW-5R and MW-8R as a result
of the first ASP injection at the site. More significant reductions observed at MW-5R and
MW-8R as compared to MW-18 and MW-19 may be related to the more aggressive ASP
solution dosage within the source core area (URS, 2012b). There were no GCL
exceedances for any contaminant analyzed in any well sampled in August 2012 and
September 2012, Benzene concentrations in MW-8R rebounded to a level greater than the
GCL between September and December 2012 and have remained above the GCL as of
May 2013.
• The second ASP injection performed in June 2013 is expected to result in reduced
contaminant concentrations in MW-5R and MW-8R. Cumulative petroleum constituent
mass degradation through two injections is expected to diminish subsequent dissolved -
phase concentration rebound.
• Non -detect sodium persulfate sample results have been demonstrated for each performance
monitoring well following the June 2012 injection. These results suggest that most if not all
injected sodium persulfate fully degraded prior to the second injection in June 2013.
• Due to increased dissolved sulfate concentrations created as a byproduct of the ASP
oxidation reaction, ongoing biological degradation of petroleum constituents by sulfate
reducing bacteria may result in additional contaminant reduction over time. Gradually
decreasing ORP levels observed within the injection area suggest enhanced anaerobic
biodegradation conditions, potentially resulting from increased sulfate concentrations.
• Aquifer characteristics affected by the injection, including Cox concentrations, sulfate
concentrations, specific conductivity, and pH, have continued to exhibit a decreasing trend
towards baseline conditions following increases observed one week after injection.
• Based on monitoring results for downgradient monitoring well MW-3, the effects of the
injection appear to have been contained to within the targeted treatment area.
Based on these conclusions, URS recommends the following course of action:
• Continue quarterly sampling of monitoring wells MW-3, MW-5R, MW-8R, MW-18. and
MW-19 with sampling events planned for August 2013 and November 2013.
• Maintain quarterly analytical data and injection status reporting in accordance with Part
VII, Item 2 of the Renewal Issuance of Injection Permit WI0400198.
Sample monitoring well MW-16 in August 2013 or November 2013 in accordance with
Part VII, Item 1 of the Renewal Issuance of Injection Permit WI0400198. MW-16 samples
will be analyzed by a certified laboratory for sulfate by EPA Method 300 and carbon
dioxide by EPA Method 4500-Ca2. MW-16 sample water will also be tested for pH in the
field using a calibrated water quality meter and for sodium persulfate using FMC's
Klozur(l) Field Test Kit K.
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SECTIONSIX STATEMENT OF LIMITATIONS
This report has been prepared based on assumptions made by URS related to data and site
characterization from previous and proposed site investigations. These assumptions, although
thought to be reasonable and appropriate, may not prove to be true in the future. Data and site
characterization utilized to develop this summary report and injection plan are restricted by the
following limitations.
Background information and other data have been furnished to URS by ARCD, NCDENR and/or
third parties, which URS has used in preparing this report. URS has relied on this information as
furnished, and is neither responsible for nor has confirmed the accuracy of this information. In
addition, it would be extremely expensive, and perhaps not possible, to perform an investigation
which would completely characterize subsurface geological conditions to ensure the detection of
all materials at the site which now are, or in the future might be, considered "contaminants" by
State or federal regulatory agencies. It is possible that any environmental investigation may fail
to reveal the presence of critical subsurface characteristics or contaminants that may be present.
URS' failure to discover hazardous materials or contaminants through reasonable and mutually
agreed -upon scopes of work does not guarantee that hazardous materials or contaminants do not
exist at the site. Finally, opinions presented herein apply to the existing and reasonably
foreseeable site conditions at the time of our assessment. Changes in the condition of this
property may occur with time due to natural processes or works of man at the site or on adjacent
properties. Changes in applicable standards may also occur as a result of legislation or the
broadening of knowledge. Accordingly, the findings of this report may be invalidated, wholly or
in part, by changes beyond our control.
No expressed or implied representation or warranty is included or intended in our reports except
that our services were performed, within the limits prescribed by our clients, with the customary
thoroughness and competence of our profession.
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SECTION S EV EN REFERENCES
NCDENR, 2008. Guidelines for Sampling. UST Section, North Carolina Department of
Environment and Natural Resources, Division of Waste Management, July 2008.
NCDENR, 2011 a. Notice oj' Regulatory Requirements, 15A NCAC 2L . 0407(c), Risk -based
Assessment and Corrective Action for Petroleum Underground Storage Tanks,
Knollwood Gulf Station (BP 24163), 381 Knollwood Street, Forsyth County. North
Carolina Department of Environment and Natural Resources, Division of Waste
Management — UST Section, Winston-Salem Regional Office. October 27, 2011.
NCDENR, 201 lb. Ref Issuance of Injection Permit WI0400198, Former Knollwood Gulf
Station (BP 24163), Winston-Salem, Forsyth County. North Carolina. North Carolina
Department of Environment and Natural Resources, Division of Water Quality. August 9,
2011.
NCDENR, 2013. Ref Renewal Issuance of Injection Permit WI0400198, Former Knollwood
Gulf Station (BP 24163), Winston-Salem. Forsyth County, North Carolina. North
Carolina Department of Environment and Natural Resources, Division of Water Quality.
May 24, 2013.
URS, 2011. Corrective Action Plan, Former Knollwood Gulf Station (BP 24163), Incident No.
6400, 381 Knollwood Street, Winston-Salem, North Carolina. URS Corporation — North
Carolina. September 7, 2011.
URS, 2012a. RE: Injection Pilot Test and Additional Investigation Results, Letter Report
Submitted to Thomas Moore, North Carolina Department of Environment and Natural
Resources, Division of Waste Management -- UST Section. URS Corporation -North
Carolina. April 23, 2012,
URS, 2012b. Activated Sodium Persfulate Injection Completion Report, Former Knollwood Gulf
Station (BP 24163), 381 Knollwood Street, Winston-Salem, Forsyth County, North
Carolina, Incident No.: 6400. URS Corporation -North Carolina. December 5, 2012.
URS, 2013a. RE Injection Permit WI0400198 Renewal Application, Former Knollwood Gulf
Station (BP 24163), 381 Knollwood Street, Winston-Salem, NC. Submitted to North
Carolina Department of Environment and Natural Resources, Division of Water Quality.
URS Corporation -North Carolina. March 26, 2013.
URS, 2013b. Semi -Annual Data Report, Former Knollwood Gulf Station (BP 24163), 381
Knollwood Street, Winston-Salem, Forsyth County, North Carolina. Incident No.: 6400.
URS Corporation -North Carolina. April 30, 2013.
URS, 2013c. RE: Injection Event Record, Injection Completed tinder Injection Permit
WI0400198, Former Knollwood Gulf Station (BP 24163), 381 Knollwood Street,
Winston-Salem, NC. Submitted to North Carolina Department of Environment and
P+a"Fai (ANM41n7 IX W-S i111 kla j-' d Slpw%A I, pc4�Nwes)k 4 B,rf - Irq Drh« Wa,112 Wy 2UiI GH• E-1 Qu uh Repo -MA 24011 QTRLY DATA Report d� 7-1

SECTIONSEVEN
REFERENCES
Natural Resources, Division of Water Quality. URS Corporation -North Carolina. June
26, 2013.
USEPA, 2008. USEPA Contract Laboratory Program National Functional Guidelines for
Superfund Organic Methods Data Review, U.S_ Environmental Protection Agency Office
of Superfund Remediation and Technology Innovation. USEPA-540-R-08-01. June 2008.
USEPA, 2010, USEPA Contract Laboratory Program National Functional Guidelines far
Inorganic Superfund Data Review, U.S. Environmental Protection Agency Office of
Superfund Remediation and Technology Innovation. EPA 540-R-10-011. January 2010.
Vironex, 2013. Injection Services Report, Prepared for: URS, Prepared by: Vironex, Former BP
Station No. 24163, Winston Salem, NC, June 3, 2013 — June 6, 2013. Submitted to URS
June 20, 2013. Vironex. Inc.
YSI, 2009. The Dissolved Oxygen Handbook W39 0909. September 2009. YSI Incorporated,
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TABLES

Table 1
Monitoring Well Construction Data
Former BP Service Station No. 24163
381 Knollwood Street
Winston-Salem, Forsyth County, North Carolina
Will
status
Well
Type
TOC
�_
Elevation
Total
Depth u i
Well
Diameter {laehes]
Screen
Interval 1 i i
Avg Screen
ui
Elevation
MW-3
In Use
Type ii
99,03
20
2
NA NA
NA
MW-5
Abandoned
Type II
99.39
25.5
4
10.5 - 25.5
81.4
MW-5R
In Use
Type II
NS
20
2
10 - 20
NA
MW-6
In Use
Type Ii
98.68
25.5
4
10.E 25.5
80.7
MW-6i
In Use
Type Ill
99.26
55
2
50 55
46.8
MW-8
Abandoned
Type ll
97.84
24
fT
NA - NA
NA
MW-BR
In Use
Type lI
NS
20
2
10 - 20
NA
MW-14
in Use
Type If
100.44
22
4
7 22
85.9
MW-15
In Use
Typell
99.91
22
4
7 22
85-4
MW-16
In Use
Type11
97,42
25
2
iU 25
79.9
MW-17
In Use
Type 11
100.00
22
4
7 22
85.5
MW-18
In Use
Type 11
NS
20
2
10 20
NA
MWA9
In Use
Type ❑
NS
20
2
l0 20
NA
Notes:
1. Reported in feet below grade
2. Measured in Foot relative to site datum
4. Conestoga Rover and Associates, a former consultant for this Site, previously rcpWcd that no reference was found to the following wells:
MWA, MW-9, MW-10, MW-1 1, MW-I2 or MW-I3. These wells are presumed to be abandoned.
3. URS Corporation is not responsible for data generated by others. Data included on this table not generated by
or on behalf of URS Corporation - North Carolina (URS) has been taken from documents prepared and submitted to the NC DENR by Others and
is included only for ease of reference; URS does not assume or accept any responsibility or liability for the quality, accuracy, or completeness of
the data included on this table that was not generated by or on beha€f of URS.
4. Monitoring wells MW-5 and MW-8 were abandoned on 5/1912010 and replaced with monitoring wells MW-5R and MW-SR the same day.
5. Monitoring wells MW-18 and MW-19 were install aLed on October 25. 2011.
NA = Not Applicable 1 Available
NS = Not Surveyed
TOC = Top of Casing
11 18I,,IM .l 41 61 CK. w S. 3A1 K.* ...0 si M 0 1 rk,n . in� ikF..an is F'e..u1- rn a F'.A. � Y.q.•ror_mvP r hm TA1 Rd unpa M'I Welk (: rnbr aAWN-1n7n M

Table 2
Summary of May 31, 2013 Groundwater Results
Compared to NC Gross Contamination Levels
Former BP Service Station No. 24163
381 Knollwood Street
Winston-Salem, Forsyth County, NC
Sarn lem:
Collection Date:
MW-03
5/3112013
MW-05R
MW-MR
MW-18
MW-19
5/311/2013
5I3112413
513119A13
501/2013
Parameters
Standard
[Inns
VOC
Benzene
5000 G1
411
.32)
1,410
6540
2,780
1,830
Toluene
260000 Gl
ugll
< 0.1
5.930
30,500
8,210
8,820
Eth lbenrene
84500 G1
ug/l
r 0.1
1,390
3,040
3,070
894
}C lenes {Total]
85500 {G1)
ugll
<0.22
6,220
12,500
5,740
5.250
Methyl tert-hut l ether
200(X) G 1
ugll
10.5
1,150 ]
4.200
1.000
3,120
Other
Carbon dioxide
mgll
334
1,560
437
475
' 606
Sulfate
mgll
17.9
4.680
439
83.3
i 1.530
Notes:
G1 - NC Gross Contamination Levels
- Not detected at the specified dctection limit
µglL -Micrograms per Liter
mglL - Milligrams per Liter
! -Estimated value
VOC - Volatile organic compounds
This table presents the results of all analytes. Sample results have been qualified by URS based on the results of the data review process, which is modeled after the USEPA ContractLaborarory Program (CLP)
National Functional Gurdelines (NFG) for Superfund Organic Methods Data Review (EPA, June 2008) and USEPA CLP NFG for Inorganic SuperAnd Data Review (USEPA, January 010).
Gross Contamination LevcIs, effective April 16, 2012, obtained from the NCDENR, Division a Waste Management, UST Section. A hold border indicates the concentration is greater than the NC Gross
Contamination Level,
D Enviro N tai lit 7/18/2013 7:44:20 AM Page: 1 I 1

Table 3
Groundwater Field Parameter Results, May 31, 3013
Former BP Service Station No. 24163
381 Knollwood Street
Winston-Salem, Forsyth County, North Carolina
Specific
pH
ORP
Temperature
DO
Well
Conductance
(s.u.)
{mv)
°C
(mS Cnl)
(mglL)
MW-3
6.82
-10.6
19.81
0.823
3.8
MW-5R
10.76
-60.4
20.03
11.25
0.7
MW-8R
10.18
-25.1
19.66
2.322
0.6
MW-18
6.42
-117.2
19.62
1.036
1.0
MW-19
7.50
192.5
19.86
5.885
2.7
Notes:
ORP - oxidation-reduction potential
Da - dissolved oxygen
s.u. - standard units
my - millivolts
°C - degrees Celsius
mSlcm - milliSiemens per centimeter
mg/L - milligrams per liter
F 161 CK. WA.. MI J{-.H—J 1-13 U heLvq.6kf15 l Ik.ft • Inca- fkl."AIo11 A Mar 71U 3 OW Erma 0,.rGrh Rep.M;T.ble %T.hl. Jqq—Wee. rd P,q-Wy tv I 1 01 1

FIGURES

1 Jgp NOW
�
IFF-
F.
i
fa
!�r �^ t �;5• �fiw�_ .ems w-'`, ,�... �"''•'- ' �,F"s - F�� � ;
Vie 7 �: r _r, ".`;• Tr''...-._•.
..' I r, ,� ..�? ,� � � - -:� • Fitt � r'� �, : ;; i i
Is
�,'�' .. ... .. 1?s,•.r ,�s ' .: .:__;;�_d,�',s,.�i;�`��c g - ".^`�+:•-'ter^',, .,� �,�j�
_ �- ..ate.;} {:, _ •, -..� 1.� cf.�'•�.,:,�1.
/� ��` i _ _ -" ....�'. we . J. {r'•
� � 'r•%. •,. �F ram"' :r � 3;��f _r'.�3 S'•.+MSi�
17.
f�. ,s5ti; dr i ate. NfJ7 i4J iySO
�. ^,
p::: • _p, , r� + i.- (��'QyJ.r . �rl.y .� ! ti� � + � nY `was �1', •,'�
At
IL
W All
Rk
Mr
III
� Y► _ � 3`a'� ' �: . , ,� a� s r�.����'',.rrA ;"s�`• ."ids " ry �1
{!¢�—r-. ' a• _�L. .._i. f. _2•^"..._ _1!r_V Pf 'I �.rrlk• < i�37 *'��i
FM
90
•'�va
__ - A14 •�w,_�_ ,�. :�_� iris - W�If

i
MW
Il
I
Rs. a
la'"
GRASS
I'
3�I
uA F
CON CgETE I
Es CTRIC' V
PARKING k R
I
+M4-17
i
1
ASPHA_' `RASH +
,3ARKING:A-,
� 1 po
—1 METAL 51-iro
Jps
•ORMER GASOURE
JST AREA
r OPMkR
RP SEROCE
STATIt7N
Mw-18+ CpND2E }
RACI (I I \1
LEGEND
PROPERTY LINE
ABANDONED GROUNDWATER
MONITORING WELL
—=
FORMER PRODUCT LINE
`AKa
CATCH BASIN Ir
o KK
MAN HOLE
Zy=iF�
AREA LIGHT
RP,
UTILITY POLE
C.H.
FIRE HYDRANT
❑ T
TELEPHONE
LARGE MANHOLE COVER
GROUNDWATER MONITORING WELL
i
FORMER Flt., :-- NOTES'
51L.AND :TrP1
M _� 1. MONITORING WELL LOCATIONS ARE
PARKING APPROXIMATE.
2. THE SITE IS A VACANT PARKING LOT.
j ALL SITE FEATURES EXCEPT PARKING
{�} M —19 FORMER LOT CURBS SITE CHARACTERISTICS.
CDWAYS TERISTICS.PRESENT
r RIr1 DIE L
Mw-s a _
ISLAND iTvnl }
{j CiWGv2L ft-a ,
FO ER
1ANI pk 1)
iJl t } � ��JRMEn 0 30
❑ 7 P P i � !;ANOp
■
APPROX. SCALE, ft.
I { s[R!E ❑ESLCNEa ar aerE
Mw-15 �� , Iar�µG� AS SHOWN Figure 2. Site Map
C0WM l9X-AL! 9)W-M RESCl%"-PM1 RTY 17 MAVN w UTC
a VEND RISERS Former BP Station No, 24163
PRL 05NOV12 Winston—Salem, North Carolina
�0AqSDH 5 N OV V 2 GON TACT NIaRAVtrJC M6 REV.
a BY 38435593 FIGURE-2 O
R CK C}5NOV12

om
1
am
Y
L
J.P. 10
I• sw.
GRASS
up.
R
CONCRETE
CF&K
PARKING
1+Ir4 -17
I
■
ASPHALT TRASH
I PARKING ENCLOSURE
METAL ' 1
V-3 SHED y
METAL. SNE�
I r
FORMER GASOLINE
UST AREA `
FORMER
BP SERVICE
STATION
�B W —18 ICONPCRETE
, C) ff
14
1�2 0
1 -5R M -+
!
w 5 �]� - 8 — _ FORMER PUMP
i, r} 1 p1 ISLAD (PYP)
FORMER
20 CANOPY
PARKING
_ FORMER DIESEL
UST AREA ,
I
FORMER PUMP
ISLAND (Trp)
le I
CONCRETE?
I
F00 IER
J TAN OLD
1 0 UJ
a o FORMER
° CANOPY
ur —
r AIW-15 FORMER
Ott
VENT RISERS
0%K
GROUNDWATER MONITORING WELL es ❑
ABANDONED GROUNDWATER a""
MONITORING WELL ur
FORMER PRODUCT LINE
PROPERTY LINE
— — — — ESTIMATED PRE --INJECTION BENZENE ISOCONTOUR
921 JUNE 2013 ACTIVATED PERSULFATE
INJECTION LOCATION
PREVIOUS INJECTION LOCATION
(JUNE 2012)
Injection
Paint
Number
Date
tom feted
Injection
Interval
feet b(pounds)
sP
Injected
NaDH
Injected
(gallons)
Total Volume
Injected
(gallons)
1
6/4/2013
12 to 17
291
37
296
2
6/5/2013
12 to 17
291
37
Z96
3
6/4/2013
12 to 17
291
37
296
4
6/5/2013
12 to 17
291
37
296
5
6/4/2013
12 t4 17
291
37
296
6
6/412013
12 to 17
291
37
296
7
6/412013
12 to 17
291
37
296
8
61S12013
12 to 17
291
1 37
296
9
6/5/2013
12 to 17
291
37
296
10
6/4/2013
12 to 17
292
37
297
11
61S12013
12 to 17
2.91
37
295
12
6/5/2013
12 to 17
300
38
305
13
6/4/2013
12 to 17
291
37
296
14
6151ZM
12 to 17
300
38
305
15
6/6/2013
12 to 17
289
37
294
16
6/4/2013
12 to 17
291
37
296
17
614J2013
12 to 17
291
37
296
18
6/5/2013
12 to 17
291
37
296
19
6/6/2013
12 to 17
293
38
294
20
6/6/2013
1 12 to 17
293
38
294
21
6/6/2013
12 to 17
290
37
294
22
6/6/2013
12 to 17
289
37
294
23
6/5/2013
12 to 17
300
38
305
CATCH BASIN
MAN HOLE
UTILITY POLE
FIRE HYDRANT
0 30
APPROX. SCALE, ft.
NOTES:
1. FEET BGS = FEET BELOW GROUND
SURFACE.
2. SP = SODIUM PERSULFATE.
3. NaOH = 25% SODIUM HYDROXIDE
SOLUTION.
4. THE GCL FOR BENZENE IS 5.000
UgA.
5. INJECTION LOCATIONS ARE
APPROXIMATE.
6. ALL INJECTIONS PERFORMED VIA
DIRECT PUSH AND ABANDONED
IMMEDIATELY FOLLOWING COMPLETION

APPENDIX A
Winston-Salem Fire Hydrant Permit #27414

Permit # 27414
Date: 05/30/2013
C.
APPLICATION FOR CONNECTION
TO— WI#5TON-SAL1; ILATIES -
Application is hereby made for the following serices to serve a Meter Only Const Mtr/Hydrant Truck Mtr
located on the side of KNOLLWOOD ST ParceI ID in Development, Connection Status: New
Install
Deposit Advance Fee
750.00 50.00
The deposit for Hydrant and/or Hydrant Meter is paid for the account below.
PERMIT # 27414 W/S ACCT. # 2316648 Conn. # 329618
WATER CLASS: Inside City
As a condition of providing water and sewer service, it is expressly understood and agreed that the owner will
comply with all City ordinances, both now in effect and hereafter adopted, relating to the water and sewer
systems. Payment of this invoice signifies acceptance of these conditions.
SPECIAL INSTRUCTIONS:
Issued by:
CYNTHIAH
d
„ gaa
4,
„
CD
C
Q
u dp
(3
n
l�iiy ii
Nt
v
It
g n
u
�
n
n
N co n
C
a 3
1-4
u ..
Ic
cc
ki
co
sM
ti
'r ii
ram-,
T INCam,] f6
C'j<) >,'- k1
Nit
11
C] C', ti
it
'I r
It
µ
"
.. •� t11
' m
IN
II
i+

ton -Salem • Forsyth County
lCounty Utilities
• Sewer - Solid Waste Disposal
Hydrant Permit #: 1 I_ 1 Lj
Hydrant Meter Form
Issue Date: _5 - � 0 f pi 0 t- -�
Address of Meter' Location:
Location #• � L 1. +1, 1
Connect/Tag #:
Meter Serial #: )
Meter Readies:
End Read:
Start Read:002505y ..6
Consumption:
Date Meter Picked Up: 3©- 13
Date Entered:
Picking Up Hydrant Meters:
Type: GARDEN af�au__)
(Please circle]
Hydrant Wrench: YE r NO
(please circle)
Contact Person
Name: ccd4 kroz)5 e-
Phone Number:
Issued By:
MeS r $hop Personnel]
Entered By:
(Meter Shop Personnel)
1. Six Month Limit (Meter(s) must be returned by : (�j�Date Due)
2. Hydrant Wrench Needed: NO (please circle)
3. Contact Name and Phone Number
4. The hydrant meter should be returned back to the Meter Shop
Returning Hydrant Meter:
1. Date Hydrant Meter Returne
k� 9110
2. If same reading start and end - as the hydrant ed?
3. Hydrant Wrench - Was a hydrant wrench rented YES r NO (please circle)
Was it returned with the mete Y or Na (please circle)
4. Has the Hydrant Meter been damaged?
* Questions concerning billing or refunds contact LaShawnda Jackson.
w:MMINI.111PA

APPENDIX B
Injection Services Report (Vironex, 2013)

Injection Services Report
Prepared for:
Prepared by:
Former BP Station No. 24163
Injection Round II
Winston-Salem, NC
June 3, 2013 —June 6, 2013
Reproduction and distribution of this document without the express written consent of Vironex is strictl19
prohibited. The methodolog0 and approaches presented herein are proprietarE to Vironex.
Wilmington, DE Trenton, NJ Washington, ❑C Denver, CO Los Angeles, CA San Francisco, CA
www. vironex. coin

149=
Search and Destro
Project Summary
Project Name: Former BP Station No. 24163 (Injection Round II)
Project Dates: June 3, 2013 —June 6, 2013
Vironex Crew: Mike Mazzarese (Project Manager), Austin Hittinger (Remediation
Specialist), Mario Robertson (Field Tech)
Equipment: Vironex Custom Injection System with built in secondary containment,
integrated safety shower and eye wash; Geoprobe 7822DT; Pnuematic
transfer pump.
Injection Method: 2.25171 Pre -Strung Top Down Tooling (5' Screen)
Compound: Caustic Activated Sodium Persulfate
Water Source: Fire Hydrant
Equipment Rented: (2) Twenty Foot Conex Boxes, Extended reach forklift
Proposed SOW: Vironex proposed to inject 6,726 pounds of Sodium Persulfate and 855
gallons of Sodium Hydroxide in an 11% (w/w) solutionweight/weight.
Vironex proposed to inject the solution into 23 injection locations from
a depth of 12' to 17' below ground surface (bgs).
Project Summarfl: Project scope of work was completed as proposed with less than two
gallons of surfaced material. All material was re -injected as water.
Injection Summary
Total
Total SP
Total
Total
Solution
Date
Time On-
Time Off-
Injected
NaOH
Water
Volume
Points
Site
Site
(lbs)
Injected
Injected
Injected
Completed
(gat)
(gal)
(gal)
Monday 6/312013 7:20 AM
Tuesday 61412013 7:00 AM
Wednesday 6/512013 8:00 AM
Thursday 6/6/2013 8-0 AAEI
4:00
4:00
PM
-
-
-
-
-
PM
2,622.0
333.0
2,183
2,665
9.00
726
18$.0
1
2
URS — Former BP Station No. 24163 [Winston Salem, NC] Page 3

Project Photographs
r-
Injection Rig and Chemical Laydown Area
Injection Grid/Site Layout
Sodium Persulfate
Search and Destro0o
Injection Platform with Secondary Containment
Chemical Laydown
Sodium Hydroxide
URS - Former BP Station No. 24163 [Winston Salem, NC] Page 3

Project Photographs
Data Logging
Secondary Containment inside Conex Box
Rented Conex Boxes
Search and Destro[Mo
Distribution Pump
Boom forklift
Shop Vacuum and Spill Kit
URS - Former BP Station No. 24163 (Winston Salem, NC) Page 3

Search and Destra
Appendix A 0 injection Logs
URS - Former BP Station No. 24163 (Winston Salem, NC) Appendix A

URS
Former BP Station
Winston-Salem. NC
ironex Field Data Sheet
Injection
Point ID
Start Date
Start Time
End Date
End Time
Depth
Ave
PSI SE
Average
H'lof] Rate
Persulfate
Injected
(Ihsy
NaOH
Injected
[gal)
H2O
injected
(gal)
mended
folal [:al
Notes
IP2-17
74113
614113 1 10:
1 - 17
d
4
4
re uShed wi t h 10 ga I Ions of resh wafer.
12'-17'
16
5.0
48
6
40
49
12'- 17'
10
5.0
48
6
d0
49
12' - 17'
12
5.0
46
6
40
49
12' - 17'
12
5.0
49
6
41
50
12'- 17'
12
5.0
49
6
41
50
Location Complete
Total Volume
296
Total Water
242
Total 5P
291
Total NaOH
37
Additional Notes haled with 15 gallons ot fresh water.
IP2 - 10
614113
9:20 AM
614113 10:19 AM
12 - 17'
20
5.0
48
6
40
49
Pfe-flushed Pre-flushedwith 10 gallons of freshwater.
12' - 17'
16
5.0
48
6
40
49
12'- 17'
3D
5.0
48
6
40
49
12' - 17'
26
5.0
49
6
41
50
12' - 17'
25
5.0
49
6
41
50
12'- 17'
25
5.0
49
6
41
50
Location Complete
Total Volume
297
Total Water
243
Total SP
292
Total NaOH
37
Additional Notes: Chased with 15 gallons of fresh water.
IP2 - 7
614113
9:20 AM
12'- 17'
30
5.0
48
6
40
49
P re us hed wii th 10 galien s of f resh water
12'- 17'
40
5.0
48
6
40
49
12'- 17'
40
5.0
48
6
40
49
12'- 17'
40
5.0
48
6
40
49
12'- 17'
40
5.0
49
6
41
50
614113
1022 AM
12'- 17'
40
5.0
49
6
41
50
Location Complete
Total Volume
296
Total Water
242
Total SP
291
Total NaOH
37
Additional Notes: Chased with 15 gallons of fresh water.
IP2 - 1
614115
11.20 AM
614113 1 1 • 4 PP
12'-17'
20
5.0
48
6
40
49
Pre -flushed with gallons of freshwater.
12'- 17'
20
5.0
48
6
40
49
12'- 17'
20
5.0
48
6
40
49
12'- 17'
20
5.0
48
6
40
49
12'- 17'
20
5.0
49
6
41
50
12' - 17'
20
5.
49
6
41
50
Location Complete
Total Volume
296
Total Water
242
Total SP
291
Total Naafi �Acl
37
itiona otes: as 1 gal ns a resh water.
IP2 - 3
614113
1120 AM
614113 1 12:20 PM
12'- 17'
10
5.0
48
6
40
49
P re-11 ushed wi th 10 g al Ions of freshwater.
12'- 17'
10
5.0
48
6
40
49
12'- 17'
10
5.0
48
6
40
49
12'- 17'
10
5.0
48
6
40
49
12'- 17'
10
5.0
49
6
41
50
12'- 17'
10
5.0
49
6
41
50
Location Complete
Total Volume
296
Total Water
242
Total 5P
291
Total NaOH
37
Additional Notes: Chased with 15 gallons of Fresh water.
Search and Destro Field Lags Vironex Inc.

URS
Former BP Station
Winston-Salem, NC
Injection
Point Ill
Start Date
Start Time
Mind Irate
Nand I'ime
Depth
Average
PS[
Average
f In ]Rare
Persulfate
Injected
(lhsj
Nzoll
Injected
{gal]
llz0
Injected
[gal}
'amended
l'ntal [:al
Notes
IP2 - 6
614113
1120 AM
614113 12:20 PM
12'- 17'
30
5.0
48
6
40
49
Prelushed With gallons of freshwater.
12' - 17'
0
5.0
48
6
40
49
12'- 17'
30
1 5.0
48
1 6
4D
49
12' - 17'
30
5.0
48
6
40
49
12'- 17'
30
5.0
49
6
41
50
12'- IT
30
5.0
49
6
41
50[Location
Complete
Total Volume
296
Total Water
242
Total SP
291
Total NaCH
37
Additional Notes: Chased with 15 gallons of fresh water.
IP2 - 5
614113
1:45 PM
614113 2-45 PM
12'- 17'
20
5.0
48
6
40
49
P re-fl u shed wi th 10 gal Ions of fres h water,
12' - 17'
0
5.0
48
6
40
49
12'-17'
20
5.0
48
6
40
49
12' - 17'
20
5.0
48
6
40
49
12' - 17'
20
5.0
49
6
41
50
12' - 17'
20
5.0
49
6
41
50
Location Complete
Total Volume
296
Total Water
242
Total SP
291
Total NaOH
37
Additional Notes: Chased with 20 gallons of fresh water. E D
IP2 - 13
614113
1:45 PIN
12'- 17'
20
5.0
48
6
40
49
Pre -flushed -with 10 gaflons of res water
12' - 17'
20
5.0
48
6
40
49
12' - 17'
20
5.0
48
6
40
49
12' - 17'
20
5.0
48
6
40
49
12' - 17'
20
5.0
49
6
41
50
614113
2A5 PM
12'- 17'
20
5.0
49
6
41
50
Location Complete
Total Volume
296
Total Water
242
Total SP
291
Total NaOH
37
Additional Notes: Chased with 20 gallons of fresh water. ECD
IP2 - 16
614l1 3
1:45 PM
12'- 17'
20
5.0
48
6
40
49
Pre -flushed with gallons of freshwater.
12' - 17'
20
5.0
48
6
40
49
12'- 17'
20
5.0
48
6
40
49
12'- 17'
20
5.0
48
6
40
49
12'- 17'
20
5.0
49
6
41
50
614113
1 2-45 PM
12'- 17'
20
5.0
49
6
41
50
Location Complete
Total Volume
296
Total Water
242
Total SP
291
Total NaOH
37
Additional Notes- Chased with 20 gallons of fresh water. ED❑
IP2 - 23
615113
9:45 AM
615113 10:45 AM
12'- 17'
10
&0
48
6
40
49
P re-fl use d wi th 10 g al Ions of freshwater.
12'- 17'
10
5.0
48
6
40
49
12'- 17'
10
5.0
48
6
40
49
12'- 17'
10
5.0
48
6
40
49
12'- 17'
10
5.0
58
7
48
59
12'- 17'
10
5.0
49
6
41
50
Location Complete
Total Volume
305
Total Water
250
Total SP
300
Total NaOH
38
Additional Notes: Chased with 15 gallons of fresh water.
Search and Destro Field Logs Vironex Inc.

URS
Former BP Station
Winston-Salem. NC
Injection
Point I❑
Start (late
Start Time
End Date
End Time
Depth
Average
PS[
Average
FIoL Rate
Persulfate
Injected
[Ibsj
Na011
Injected
tall
Ilp
Injected
(gal)
Amended
fatalG{:aal
Notes
IP2 - 12
615113
9:45 AM
12'- 17'
10
5.0
48
6
40
49
P re A use d wi th 10 g @I Ions of freshwater.
12' - 17'
20
5.0
48
6
40
49
12'- 17'
20
5-0
48
6
40
49
12'- 17'
20
5-0
48
6
40
49
12-- 17'
20
5.0
58
7
48
59
615113
110:45 AM
12' - 17'
1 20
1 5.0
49
1 6
J 41
50
ocaUon Complete
Total Volume
305
Total Water
250
Total SP
300
Total NaOH
38
Additional Notes: Chased with 15 gallons of fresh water.
IP2 - 14
615113
9.45 AM
12' - 17'
25
5.0
48
6
40
49
P re- fl u sFed--w-ith 10 ga 11 ❑ns of fres water.
12' - 17'
25
5.0
48
6
40
49
12'- 17'
25
5.0
48
6
40
49
12' - 17'
25
5.0
48
6
40
49
12'- 17'
25
5.0
58
7
48
59
615113
10A5 AM
12'- 17'
25
5.0
49
6
41
50
Location Complete
Total Volume
305
Total Water
250
Total 5P
300
Total NaOH
38
Additional Notes Chased with 15 gallons of fresh water.
IP2 - 8
615113
12 00 PM
615113 1 00 PM
12' - 17'
10
5.0
48
6
40
49
P re use d wi th 10 gal ons of res water.
12' - 17'
20
5.0
48
6
40
49
12' - 17'
16
5.0
48
6
40
49
12' - 17'
16
5-0
48
6
40
49
12'- 17'
16
5.0
49
6
41
50
12'- 17'
16
5-0
49
6
41
50
Location Complete
Total Volume
296
Total Water
242
Total 5P
291
Total NaOH
37
Additional Notes: Chased with 15 gallons of fresh water.
IP2 - 11
615113
12.00 PM
12'- 17'
20
5.0
48
6
40
49
Pre-fTushed with gallons of freshwater
12' - 17'
20
5.0
48
6
40
49
12' - 17'
22
5.0
48
6
40
49
12' - 17'
22
5.0
48
6
40
49
12'- 17'
22
5.0
49
6
41
50
6l5113
1:00 PM
12'- 17'
22
5.0
49
6
41
50
Location Complete
Total Volume
296
Total Water
242
Total SP
291
Total NaOH
37
Additional Notes: Chased with 15 gallons of fresh water.
IP2 -18
Gr5N 3
12 00 PM
615113 1 1:60 PM
12' - 17'
20
5-0
48
6
40
49
P re ushed wi th 10 ga I Ions of freshwater.
12'- 17'
20
5.0
48
6
40
49
12-- 17'
18
5.0
48
6
40
49
12'- 17'
18
5.0
48
6
40
49
12'- 17'
18
5-0
49
6
41
50
12'- 17'
18
5-0
49
6
41
50
Location Complete
Total Volume
296
Total Water
242
Total 5P
291 1
Total NaOH
37
Additional Notes: Chased with 15 gallons of fresh water.
Search and oestro Field Logs Vironex fnc.

URS
Former BP Station
Winston-Salem, NC
Injection
Point ID
Start Date
Start Time
End Date
E:nd'I-ime
Depth
AveragePo
PSI
51
Re
Flo: ate
Persulfate
Injected
(Ihs)
Na011
Injected
{gal)
H2O
Injected
(gal)
rlmended
fatal Gal
Notes
IP2 - 23
615113
2 10 Pht
12'- 17'
20
5.0
48
6
40
49
P re- fl ushed with g al Ionso res water
12'- 17'
10
5.0
48
6
40
49
12'- 17'
10
5.0
48
6
40
49
17-17'
10
5.0
48
1 6
1 40
49
12'- 17'
10
5.0
49
6
41
50
615113
3:10 PM
12' - 17'
10
5.0
49
6
41
50
Location C omp ete
Total Volume
296
Total Water
242
Total SP
291
Total NaOH
37
Additional Notes: Chased with 20 gallons of fresh water. EOD
IP2 - 4
615113
2.10 PM
12' - 17'
20
5.4
48
6
40
49
Pre -Pushed with gallons ores water.
12'- 17'
18
5.0
48
6
40
49
12'- 17'
18
5.0
48
6
40
49
12'- 17'
18
5.0
48
6
40
49
12'- 17'
18
5.0
49
6
41
50
615113
3:10 PM
12'- 17'
18
5.0
49
6
41
50
ocatron Complete
Total Volume
296
Total Water
242
Total SP
291
Total NaOH
37
Additional Notes: based with 20 gallons of fresh water. E 0 D
IP2 - 9
615113
2 10 PM
615113 3:10 PM
12'- 17'
20
5.0
48
6
40
49
P re ushed wit h 10 ga I Ionso res water.
12'- 17'
20
5.0
48
6
40
49
12'- 17'
20
5.0
48
6
40
49
12' - 17'
22
5.0
48
6
40
49
12'- 17'
22
5.0
49
6
41
50
12'- 17'
22
5.0
49
6
41
50
Location Complete
Total Volume
296
Total Water
242
Total SP
291
Total NaOH
37
Additional Notes: Chased with 20 gallons of fresh water. EOD
IP2 - 22
6i6113
9.20 AM
616113 1 10.40 AM
12'- 17'
18
5.0
48
6
40
49
Pre -flushed with 10 gallons ores water.
12' - 17'
5.0
48
6
40
49
12'- 17'
5.0
48
6
40
49
12'- 17'
0
5.D
48
6
40
49
12'- 17'
1
3.5
48
6
40
49
12'- 17'
3.5
48
6
40
49
Location Complete
Total Volume
294
Total Water
241
Total SP
289
Total NaOH
37
Additional Notes: Surfacing from all three combined injection points. Slowed the flow rate and managed the surfacing. Chased with 10 gallons of fresh water
IP2 - 15
616.�13
9 20 AM
6/6113 1 10:40 AM
12'- 17'
30
5.0
48
6
40
49
P re-fl ushed wi th 10 ga Ion so res water.
12'- 17'
20
5.0
48
6
40
49
12'- 17'
20
5.0
48
6
40
49
12'- 17'
20
5.0
48
6
40
49
12'- 17'
10
3.5
48
6
40
49
12'- 17'
10
3.5
48
6
40
49
Location Complete
Total Volume
294
Total Water
241
Total SP
289
Total NaOH
37
Additional Notes: Su acing ram all three combined injection points. Slowed the flow rate and managed the su rfacing. Chased with 10 gallons of esh water
Search and Destro Field Logs Vironex Inc.

URS
Former 6P Station
Winston-Salem, INC
Injection
Paint I
Start Date
Start Time
End date End Time
Depth
1`e
PSI
.1<ve
FinRat Rate
Persuliate
Injected
(Ihs)
Na011
Injected
(gal)
Iy)
Injected
(gal]
Amended
I nfal (;a!
Notes
IP2 - 21
616113
9:20 AM
12'- 17'
20
5.0
48
6
40
49
Pre -flushed with 10 gallons of fresh water.
12'- 17'
20
5.0
48
6
40
49
12'- 17'
20
5.0
48
6
40
49
12'- 17'
20
5.0
48
6
40
49
12'- 17'
10
3.5
48
6
40
49
616113
10:40 AM
12'- 17'
10
3.5
49
6
40
49
ocation Complete
Total Volume
294
Total Water
241
Total SP
290
Total NaOH
37
Additional Notes: Surfacing from all three combined injection points. Slowed the flow rate and managed the surfacing. Chased with 10 gallons of fresh water.
IP2 - 19
616/13
11.30 AM
12' - 17'
20
37
48
6
40
49
Pre -flushed with gallons of freshwater.
12' - 17'
20
3.7
48
6
40
49
12' - 17'
20
3.7
48
6
40
49
12' - 17'
20
3.7
48
6
40
49
12' - 17'
20
3.7
50
6
40
49
6l6113
12 50 PM
12' - 17'
20
3.7
50
7
40
49
Location Compete
Total Volume
294
Total Water
241
Total SP
293
Total NaOH
38
Additional Notes Slowed the flow rate to decrease the risk of mounding and surfacing. Chased with 50 gallons of fresh water.
IP2 - 20
616113
1 1 30 AM
12'- 17'
20
3.7
48
6
40
49
P re -11 ushed with g allons ot Ireshwater.
12' - 17'
20
3.7
48
6
40
49
12'- 17'
20
3.7
48
6
40
49
12'- 17'
20
3.7
48
6
40
49
12'- 17'
20
3.7
50
6
40
49
616113
1 12 50 PM
12' - 17'
20
3.7
50
7
40
49
Location Complete
Total Volume
294
Total Water
241
Total SP
293
Total NaOH
38
Additional Notes: Slowed the flow rate to decrease the risk of mounding and surfacing. Chased with 50 gallons of fresh water.
A g
A g
Pe suRate
lgae j
{gal)
Total Gal
Points Completed
19.4
4.8 1
6.725
85:'
5 5 +[:
6 826
23
Search and Destro Field Logs Vironex Inc.

APPENDIX C
Waste Manifests

07
NONHAZARDOUS 1•Gonwii:rIDt4taber a l'ar ioi �.FaIHrpencyRaspon:airnena i.lann�rrn,�sruucurrrr„!'�'
WASTEMAlill"T Non-RCRA Re ulatud I 1-800-t387-7098 CJ19�C�
t3 relefa 6imAd�rwr I�itldlaroni [hen mr�4n2 oddressi
&Ga=alo(sNwDgrkd MLrr4Addrew BP Productr. - North America
c/o lJRS Corporatiibn NC
1600 Perimeter Park Dr.
Mord avllley NC 27560
GeoerakfaPtaa0. 704522-0330
fl Truupadcr 1 Carrpiny Nern� U.S. EPA If] Wr7Laf
SHAMROCK ENVIRONMENTAL CORPORATION N ,
7. Tnnspodu 2 Cw;3fly Neat U-6- EPA 10 bufa6m
OtssynlleE FaaS�l Name ead atoAddtas: U.9_ EPA ID kumbar
SHAMROOK ENVIRONMENTAL CORPORATION
$I9 PATTON AVE., GREENSBORO, HC 27409
(M)-M-f09A N,C-❑.9.0-1,2.7,7,7.3,2
l•4a sPtm�
H!S
S,vl�sle 67Jt,pfng t[emo and patzsplien
10.i"tetaels
Too
11,7dal
oway
1p-tM
}YwcL
Am&&cNisc
cc
x
1, yJ,N.E s�--�eye}i-r:e-3�4-s�4rvr�--•�Y--P ' �'
P
uan -
� [{ � r - r"
�
0 •DIGS L
' NbY►-��rc�:
t& spwx is inja Ks -ans aedAddltlaoal t offuUm 5 l TF' RESS
N 1
tirxcr unit ��....�. Trattar p _—
V 5 r37'J 52-64'l. AiC
]1• uean ipn'6 CFfSr1RLATift, I aer* wo mslertala daarbed ribm on Itrle merlins! am MI wdlod logo OrpJtayulalFxu br Iapo*o propm a *nFJ 0; Humdora Wuta,
1.7t.R9Utn�'lr(lllpr�7 Pdrdl prcf fiaraa S .. DO NY
O i
-r fG. Jnleandanu St pmenls 0larpmt is U 8, ❑ ENg W Gam U 9. Feel a rwyfasir._
IF" or ria101a px arpaag . Elmo 101* p
16, Tnaspou AolnoHbdp"at al Am 0 of i:wfaelo
T pmlar 1 PrWedrljpodNr:mn f n1h pay
Tnmvpcool2Pdud" Huns 5rinllufu Un4 Dili
!l
T. B'acrepanq
ITS, DlrrteRM Ndkelfon Sow
❑ Ourr4 ❑Typo ❑ FIs+Ir.Wo ❑ Pardal Ilv]n.aan� ❑ ruR Rejxdu
rJ—ld—ra..r---l:.... ..-
ly
17b. Alarm!. izmy (or Ganorolwj T U.S. CPA tb Nthmbw
FnrFiner.
17G i$paSrpnotnrn W Mug FuMty (or 6;mbla}) � `ISonth I Dal'
� �. ,�=rir}'."ar;f •�. r•r #��'yi r �'�t �" it�L c;i +may..{+ y.''I'�.} Y.S� ... f :~ +r �f••^ �-
hl rrr 5'' a +el 4� • 1}': ��„r.-sLner�r rY-ls1M,Y� •h i': :! _ S ., p'.y'.,� T, r:: ..
.•v7' .�". .i+. Yl. �'s �i�:+Y3�};I;f-��� ;'.:.�• rc,.. ;xs •:y.' r S ;,.�„, i:.. jar• .
!?.1 •�[ '.:r•. ' , ri+C • : '' 'kid '4 S: i "? S:l �+J, ;] h A� ti. j�a^ : • G.: ;�^i. „y +' �' b 2ti� r .
sis Y "•� � � �'Si''W�h+ .k:�• =jr!}��:'J��,.•sj� }{�•� [� ': •'�:f �u:5 y� ;?.' s.�}r� ri1e.'; Y.
1& DnstruW F#=j D"jr p 0pp,ratv CAlUf Ooe 0lonVl 0 rat If b I W&W 6y fh1 mwOwl =*I as MltP Nola M'
Frin WYTrpod Nano IiNth Dq
x DAVG - l ��k�JI'lI�I i r6"lx
DESIGNATED FACILITYfO GENEFIA

Eri
A
NON -HAZARDOUS
]. GvnaroiotrUSt?pAif)Ne,
RWgu
Dot�rrnonistle.
�- Pdue 1
I
�gC9ev f
VkfAM MANIFESTHen;RC�tA
{aced ,
of
3, Gonerofor'S Name and Moiling Addrals BP Products North Amerf ea
ch URS Corporatfan NC
l 1500 Perimotor Park Dr.
Marrisvilia, NC 275GO
4. Gcnarvlor*s Phono ( 704 ) 522-0330
_
A. Tranlporlcr'i phone rt
5. Troniporlar 1 Company Noma d. US EPA I Numhot
5h5mrack Environmental Car oration I N C 0.0 0 C 9.4.2 1 k 4.
336-375-1909
B. Tromporlor's Phone
7: Iromp urIor 2 Company Nome B. US EPA ID Number
Y. Dcsignolvd FociliSSy Homo and Sila Address fa. US EPA ID ldumbor
C. Fpcmvt Phone
Palmetto i.andfiii
251 Nay! Hope Rd.
Wollfard, 5C 29335
864-439-91114
11. Wosfo 5hlpping Noma and DesCrlplion
w 12. Corti Won 13. 1r
ralol UI
l+fvv 7Ypa .Quantity_ it
u Non -Hazardous, on�FWpul9ted Natoriel
(Drill Cuttings)
P
E
111
A r-
T
0
M
a
D. Arhlitianril De scripiions far MOTotloll Llsied Ah&Va SITE ADDRESS: ��� � 1� 3 - C, Handling Cados lar Wcslei listed AhoYa
Ila. VA-3135
3 Ft jco,61(cal S�
Wfh Abl� ABC _
I S.- 5ptdol Hondling Inilruellons and Addifivml Infwrnnlion
b 2 CON D 13 Qvt�k4
lk GENERATOR'S CERTIFICATION- r twalt tho ra Pivil7lt deu116rd eLma an 14% wawlw +aa mitt wblerl rY rpdar 1 movlaL'm,t [nit rel,arllnp pimp dhpclol of no- m,dum Vw
r PrirgW/-Typvd Marne ,^. 5l011oluJ f f ] MonJr oar y,
T 17. Tramporler 1 Acknow lndgeme_nf Re!rt l of Materials
R primed/Typed Noma
g� �
p18.TronSporfur 7 A_ nowladiTov+arsf o{ Aacalpl of ASplodaSs��•
y : T Prinled/Typed Rama 510n0lum +1A0r41. jj p"r �� v,
IP. Ditervpaney Indkolion 5pot o
k j ] G
1 20, FoOlty ❑wnkr or Oporalov CorllficoSlon of racafpt of Watio mpiarfafr Carared by thlt manilasl cacepl us nosed in Item 19.
T
p
Priwdl7mad Noma Slunolvra Alanrb pay Yr
ORIGINAL - RETURN TO GENERATOR

APPENDIX D
Historical Groundwater Elevation Data

Appendix ❑
Historical Groundwater Elevation Data
Former BP Service Station No. 24163
381 Knollwood Street
Winston-Salem, Forsyth County, North Carolina
TUC
Depth to
Dcplh to
LNAPL
Correcled
Well
Date
Elevation
LNAPL
[;round"ater
Thickness
Ground"ater
1
feet htoc(feet
btur)
feet
Elevation 1 2
'
06/24/93
ND
13.89
0.00
85.14
'
003194
ND
14.36
0.00
84.67
'
03/21/95
ND
13.58
0.00
85.45
08/05/96
ND
13-54
0-00
85-49
'
11/17/98
ND
14.09
0-00
84-94
'
06/19/01
ND
14.11
0.00
84.92
09/12/01
ND
14.41
0-00
84-62
12/27/01
ND
14.51
0.00
84.52
03/05/02
ND
14.29
0.00
84-74
05/13/03
ND
I4.35
0.00
84.68
12/09/03
ND
13.63
0.00
85.40
03/23/06
ND
13.64
0.00
85.39
05/08/07
"`
ND
13.40
0.00
85.63
05/14/08
ND
13.42
0.00
85.61
05/28/09
ND
13.31
0.00
85.72
05/27/10
ND
13.07
0.00
85.96
10/31/11
ND
13.87
0.00
85.16
05/22/12
ND
13.55
0.00
85.48
06/14/12
ND
13.53
0-00
85.50
07/09/12
ND
13.98
0.00
85.05
08/14/12
ND
14.24
0.00
94.79
09/19/12
ND
14.08
0.00
84.95
12/05/12
ND
MA2
0.00
84-61
02/26/13
ND
13.55
0.00
85.48
05131/13
ND
13.58
0.00
85.45
06/24/93
ND
13.51
0.00
85.88
08/23/94
ND
13-82
0-00
85-57
03/21/95
ND
13.71
0.00
85.68
08/05/96
ND
13.54
0.00
85-85
11/17/98
ND
14.08
0.00
85.31
06/19/01
NM
NM
NM
NM
09/12/01
ND
14.46
0.00
84.93
12/27/01
99.39
14.51
15.07
0.56
84.73
03/05/02
14.45
14.88
0-43
84.82
05/12/03
NM
NM
NM
NM
12/09/03
13.I8
13.60
0.42
86.10
03/23/06
ND
13.67
0.00
85.72
05/08/07
ND
13.45
0.00
95.94
05/14/08
ND
13.51
0.00
85.88
05/28/09
ND
13.39
0-00
86.00
05/27/10
Nil
13.70
0-00
NM
10/31/11
ND
13.97
0.00
NM
05/22/12
ND
1166
0.00
NM
06/14/12
ND
13.73
0.00
NM
07/09/12
ND
14.18
0-00
NM
MW-5R
N5
08/14/12
ND
14.45
0.00
NM
09/19/12
ND
14.35
0.00
NM
12/05/12
ND
14.68
0.00
NM
02/26/13
ND
13.89
0.00
NM
05/31/13
ND
13.77
0.00
NM
r APA-,av»Ca4 ini CK W-S. MIVWAnA 5� AWP-W IIS+.il-)~lk'� AkA M Mq NI] OW LN.Iokv RqA TA., TAk-A"d­ w 4­M�.l, l u i„i uw l.kahw 7 l b 20 M A PM Page 1 of 5

Appendix D
Historical Groundwater Elevation Data
Former BP Service Station No. 24163
391 Knollwood Street
Winston-Salem, Forsyth County, North Carolina
TUC
Depth to
Depth to
1.NAPL
Corrected
well
Date
Elevation
LNAPL
Groundwater
Thickness
Groundwater
{!
feet bloc
feet btoc
feet
Elevation 1 1
'
06/24/93
ND
12.31
0.00
86.37
'
O8l23194
ND
12.61
0.00
86-07
'
03/21/95
ND
I3.15
0-00
85.53
08/05/96
ND
12.39
0-00
86.29
*
11/17/98
ND
13,16
0-00
85-52
06/19/01
NM
NM
NM
NM
09/12/01
ND
13.51
0-00
85-17
12/27/01
ND
13.61
0.00
85.07
111'
03/05/02
"4 :
ND
11.02
0.00
87.66
05/12/03
ND
11.10
0-00
87-58
12/09/03
ND
13.49
0.00
85.19
03/23/06
ND
11.79
0-00
86-89
05/08/07
ND
12.50
0.00
86.18
05/14/08
ND
12.16
0.00
86.52
05/28/09
ND
10.64
0-00
88.04
05/27110
ND
11-84
0-00
8614
10/31/11
ND
12.95
0.00
85.73
06/24/93
ND
NM
0-00
NM
08/23/94
ND
NM
0.00
NM
03/21/95
ND
14.75
&00
84.51
08/05/96
ND
14.13
0-00
85.13
11/17/98
ND
14.09
0.00
85.17
06/19/01
ND
18-07
OM
81.19
09/12/01
ISM
I6.60
0.00
82.66
12/27/01
ND
14.61
0-00
84.65
MW-61
03/05/02
99.26
ND
14-96
0-00
84.30
05/12/03
ND
15.17
0.00
84.09
12/09/03
ND
13.55
0-00
85.71
03/23/06
ND
13.55
0-00
95.71
05/08/07
ND
12-93
0-00
86-33
05/14/08
ND
13.22
0.00
86.04
05128J09
ND
13-39
0.00
85-87
05/27/10
ND
13.23
0-00
86.03
10/31/11
ND
13-90
0-00
85.36
08/23/94
ND
12.14
0.00
85.70
03/21/95
ND
12-02
0.00
85.82
08/05/96
ND
11-99
0-00
85.85
II117/98
ND
12.53
0-00
85.31
06/19/01
NM
NM
NM
NM
'
09/12/01
ND
12.67
0.00
85.17
MW-8
12/27/01
97.94
14.47,
15.03
0.56
83.26
03/05/02
12-42
12-60
0.18
85-38
05/12/03
NM
NM
NM
NM
12/09/03
13.32
13.56
0.24
84.47
03/23/06
ND
12-15
0.00
85-69
05/08/07
ND
11.90
0-00
85-94
05/14/08
ND
11.95
0-00
85-89
05/29/09
ND
1 l .70
0-00
86-14
P Vv+Nnlem'.Hr-'7ai SICK w-IMI khan T.bj-TA . Mr d- .. GnpMrvh I LM I)IN TW Page 2 of 5

Appendix D
Historical Groundwater Elevation Data
Former BP Service Station No. 24163
381 Knollwood Street
Winston-Salem, Forsyth County, North Carolina
TOC
Depth to
Depth to
LNAPL
Corrected
NVell
Date
Elevation
LNAPL
Groundwater
Thickeen
Grouedw=ter
]
feet bloc
feet bloc
feet
Elevation 1 Z
05/27/10
ND
12.97
0.00
NM
10/31/11
Nil
13.34
0.00
NM
05/22/12
ND
13.69
0.00
NM
06/14/12
ND
14.94
0.00
NM
MW-SR
07/09/12
NS
ND
14.08
0.00
NM
081141i2
ND
14.29
0.00
NM
09/19/12
ND
14.08
OM
NM
12/05/12
ND
14.53
0.00
NM
02/26/13
ND
13.80
0.00
NM
05/31/13
ND
13.61
0.00
NM
06/24/93
NM
NM
NM
NM
08/23/94
NM
NM
NM
NM
03/21/95
ND
13.55
0.00
W89
08/05/96
ND
13.64
000
86.80
11/17/98
ND
14.26
0.00
86.18
06/19/01
ND
14.55
0,00
85.89
09/12/01
ND
14.81
0.00
85.63
12/27/01
ND
14.85
0.00
95.59
MW-14
03/05/02
100.44
ND
14.64
0.00
85.80
05/12/03
ND
13.41
0.00
87.03
1210W03
ND
13.51
0.00
86.93
03/23/06
ND
13.82
0.00
86,62
05/08/07
ND
13.54
0.00
96.90
05/14/08
ND
13.64
0.00
86.80
05i28109
ND
13.47
0.00
86.97
05/27/10
ND
13.00
0.00
87.44
10/13/11
ND
14.14
0.00
86.30
06/24/93
NM
NM
NM
KM
08/23/94
NM
NM
NM
NM
03/21/95
ND
12.83
0.00
87.08
08/05/96
ND
12.77
0.00
87.14
11/17/98
ND
13.58
0.00
86.33
06/19/01
ND
13.8U
0.00
86.11
09J12/01
ND
14.18
0.00
85.73
12/27/01
ND
14.29
0.00
85.62
03/05/02
09 01
ND
13.98
0.00
85.93
05/12/03
NM
12.75
NM
87.16
12/09/03
ND
12.89
0.00
87.02
03/23/06
ND
13.14
0.00
86.77
05/08/07
ND
12.90
0.00
87.01
05/14/08
ND
13.12
0.00
$6.79
05/28/09
ND
12.90
0.00
87.01
05/27/10
NU
12.25
0.00
87.66
10/31/11
ND
13.61
0.00
86.30
r�Rp$%rw-w3A161.Lx.wA.aiK"'."SwffL31».u.e.M..s.1n.m-ram..nr-M.4aMnN1+nwF~LW-t,K-p-Td-TAIa nMra. aF.yr.�nIAl4aiiwu­11R-MIl50rM Page 3of5

Appendix D
Historical Groundwater Elevation Data
Former BP Service Station No. 24163
381 Knollwood Street
Winston-Salem, Forsyth County, North Carolina
TOC
Depth In
Depth to
LNAPL
Corrected
WtH
Date
Elevation
LNAPL
Groundwater
Thickness
Groundwater
{t
feet btoc
feet bloc
feet
Elevation 1 2
06/24/93
NM
NM
NM
NM
08/23/94
NM
NM
NM
NM
03/21/95
ND
12.06
0.00
85.36
08/05/96
ND
12.09
0.00
85.33
11/17/98
ND
12.60
0.00
84.82
06/19/01
ND
12.74
0.00
84.68
09/ 12/01
ND
12.98
0.00
84.44
12/27/01
NM
NM
NM
NM
03/05/02
97.42
ND
12.83
0.00
84.59
05/12/03
NM
NM
NM
NM
12/09/03
ND
12.13
0.00
85.29
03/23/06
ND
12.18
0.00
85.24
05/08/07
NM
NM
NM
NM
05114/09
ND
12.03
0.00
85.39
05/28/09
ND
11.96
0.00
85.46
05/27/10
ND
11.69
0.00
85.73
10/31/11
ND
12.45
0.00
84.97
06/24/93
NM
NM
NM
NM
08/23/94
NM
NM
NM
NM
03/21/95
ND
14.42
0.00
85.58
08/05/96
ND
14.46
0.00
85.54
11/17/98
ND
14.91
0.00
85.09
06/19/01
ND
15.03
0.00
94.97
09/12/01
ND
15.28
0.00
84.72
12/27/01
ND
15.37
0.00
84.63
03/05/02
100.00
ND
15.15
0.00
84.85
05/12/03
NM
14.15
NM
85.85
12/09/03
ND
14.50
0.00
85.50
03/23/06
ND
14.45
0.00
85.55
05/08/07
ND
14.22
0.00
85.78
05/14/08
ND
14.22
0.00
85.78
05/28/09
ND
14.12
0.00
85.88
05/27/10
ND
13.90
&00
86.10
10/31/11
ND
14.72
0.00
85.28
10/31/11
ND
13.95
0.00
NM
05/22/12
ND
14.10
0.00
NM
06/ 14/ 12
ND
13.61
0,00
NM
07/09/ 12
ND
14.05
0.00
NM
M • 19
08/ 14/ 12
N5
ND
14.43
0.00
NM
09/19/12
ND
14.34
&00
Niel
12/05/12
ND
14.62
0.00
NM
02/26/13
ND
14.67
0.00
NN
05/31/13
ND
14.57
0.00
NM
tW,Pmn ,Wa4IM cx ws.'a� w..11-4.WWO u 1]01r- Il i i".. w., 2411 v rw r-i w,nr,n w.n.. T.Mi r.a6. AtT , J- -a ,.w,1.. L, 14140 41W 7 It2ik11s.4 FM Page 4 of 5

Appendix D
Historical Groundwater Elevation Data
Former BP Service Station No. 24163
381 Knollwood Street
Winston-Salem, Forsyth County, North Carolina
Well
Date
TOC
Elevation
jl
Depth to
LNAPL
feet bide
Depth to
Groundwater
feet btoc
LNAPL
Thickness
feet
Corrected
Groundwater
Elevation 1 2
10/31/11
ND
13.75
0.00
N,\1
05/22/12
ND
13.37
0,00
NM
06/14/12
ND
13.39
&00
NM
07/09/12
ND
13.89
0.U0
NM
08/14/12
N5
ND
14.13
0.00
NM
09/19/12
ND
I4 02
0.00
NM
12l05112
ND
14.39
0.00
NM
02/26/13
ND
13,61
0.00
NM
05131J13
ND
13.47
0.00
NM
Notes,
1. Measured In feet relative to site datum
2. Corr. OW Elev. = (ref point elevation) - (depth to groundwater) + (LNAPL thickness)(LNAPL specific gravity)
3. LNAPL specific gravity assumed to be 0 73
- Prior to URS' work at this Site, monitoring well MW-3 has previousty been reported as MW-2. monitoring weli MW-6 has previously been reported as MW-
8, and monitanrg well MW-8 has previously beers reported as MW-!>.
- URS Corporation is not responsible for data generated by others. Data included on this table not generated by or on behalf ofURS Corporation -North
Carolina (URS) has been taken from documents prepared and submitted to the NCDENR by others and is included only for ease of referece: URS does not
assume or accept am responsibility or liability for the quality, accuracy, or completeness of the data included on this table that was not generated by at on behalf
of URS
LNAPL= Light non -aqueous phase liquid
ND = Not detected
NM = Not measured
NS = Not Surveyed
TOC = Top of casing
bloc = below top of casing
-During the May 2003 sampling event LNAPL was observed in MW-5 Depth to groundwater and thickness of LNAPL were not measured
I' .HPPTRx MC24lo3 CIL W-5 391 K:MwW'Wul 5 ri IMn h4,1_' I EWL- la . ndwe dl j 21 Mmm 21111 OW P-4 (Nw pk Repm'1Alm -T41n AlrylndK rid Can&pul- 1114J 4IW Fld ua 7'117ag15 uN JW Page 5 of 5

APPENDIX E
Historical Groundwater Analytical Summary

Appendix E
Historical Groundwater Analytical Summar►•
Former BP Service Station No. 24163
381 Knollwood Street
Winston-Salem, Forsyth County, North Carolina
Well
Sample Date
Benzene
Ethyl
benzene
Toluene
Xylenes
Total
MTBE
Carbon
dioxide
NC GCL:
5,000
84,500
260,000
85,500
20,000
j
NEUnits:
l
1
l
1
l
m l
MW-03
5/13/2003
8.5
0.98 J
0.611
1.7 J
8
-
--
12/9/2003
47.4
14.3
1.9
8.1
37.3
--
--
3/23/2006
4.5 J
< 0.5
< 0.5 UJ
< 1 UJ
5.5
--
-
5/8/2007
40.4
3.7
1.4
2 J
13.1
--
5/14/2008
4.3)
< 0.8
< 0.7
¢ 0.8
14
5/28/2009
5.4
0.44 J
0.14 J
0.49 J
5.6
--
5/27/2010
0.44 J
< 0.11
0.3 J
< 0.32
4.8
--
-
10/31/2011
5.5
0.76
< 0.17 U
0.38 J
19.1
8.4
405
5/22/2012
< 0.43 U
< 0.2
< 0.2
< 0.52
4.6
15.."
378
6/ 14/2012
12.1
6.7
0.72
4.7
15.4
6.6 J
344
7/9/2012
2.2
l.6
2.6
3
14.7
9.9
393
8/14/2012
2
2.1
r 0.13
0.41
17.9
3.6
303
9/19/2012
2.7
0,66
r 0.13
0.33 J
19.8
2.8
459
12/5/2012
11.3
1.2
0.43 J
1.1 J
19.3
0.78 J
377
2/26/2013
0.23 J
< 0.1
< 0.1
< 0.22
5.4
32.6
338
5/31/2013
0.321
< 0.1
< 0.1
< 0.22
10.5
17.9
334
MW-05
3/23/2006
2,440
32,000
13,500
16,100
--
--
3/23/2006 t'
1 1,000
2,370
30,700
13,200
15,400
--
--
5/8/2007
7.410
1,590
21,100
8,920
8,830
-
5/8/2007 {';
7.400
1,680
20,100
9,290
9,360
-
-
5/14/2008
0.000
2,100
29,000
12,000
18,000
-
5/14/2008 (1)
0,000
2,100
30,000
12,000
18,000
--
-
5/28/2009
7, 390
2,330
25,700
13,400
6,920
-
-
512812009"'
6.510
2,240
22,100
12,900
6,510
--
N4W-05R
512712010
fi,610
2,810
24,300 J
15,700
4,330
--
--
512712010sii
6.Oi}0
2,380
30,I001
13,300
4,250
--
--
10/31/2011
960
2,660
28,000
13,800
3,830
< 1
< 5
10/31/2011 t'f
360
2,870
24,600
14,800
4,070
--
--
5/22/2012
6/15/2012 «}
244
3,470
227
32,200
1,190
19,200
1,120
3,820
36.9
< 5
6,070
179
1,820
7/9/2012
3361
481 J
2,010 J
2,400 J
48.4 J
6,470
2,620
8/14/2012
201
283
1,050
1,300
48.5
14,700
4,190
9/19/2012
158
181
650
883
114
19,000
3,280
I2/5/2012
754
505
2,220
2,380
1,160
13,600
1,840
2/26/2013
1,360
878
3,520
3,940
1,660
8,520
1,530
5/31/2013
1,410
1,380
5,930
6,220
1,150 J
4,680
1,560
MW-06
5/12/2003
< 0.5
0.521
< 0.5
< 1
3
--
12/9/2003
2.3
0.64 J
1.1
3.6
17.6
--
12/9/2003
2.4
0.68 J
1.1
3.8
i 8
-
-
3/23/2006
0.76 J
0.59 J
3.6
2.8 J
1.1
5/8/2007
< 0.5
< 0.5
< 0.5
< 1
< 0.5
5/ 1412008
< 0.5
< 0.8
< 0.7
< 0.8
< 0.5
-
-
5/28/2009
< 0.06
< 0.05
< 0.06
< 0.14
0.17 J
--
512712010
< 0.11
0.13 J
0.38 J
0,46 J
< 0.12
--
-
10131/2011
8.7 J
11.7 J
27.5 J
132 J
• 0-26 11
--
-
P:SP4ProjectMN024163. CK, W$• 381 Knonwooc SlreeM.0 Sne DataW.6 AnalyticaffaoleslCaMed Edo 6P 24163 - Water . 2012-2013 - Njecuon MDMGnng Summary
711WO13.5.11 PM

Appendix E
Historical Groundwater Analytical Summary
Former BP Service Station No. 24163
381 Knollwood Street
Winston-Salem, Forsyth County, North Carolina
MW-06I
5/12/2003
< 0.5
< 0.5
< 0.5
1.1 3
< 0.5
-
-
12/9/2003
<2.5
<2.5
<2.5
<5
r2.5
-
3/23/2006
49.7
18.9
48.7
443
3,560
--
-
5/8/2007
< 25
< 25
< 25
< 50
6,910
--
5/14/2008
5.21
< 2
< 1.8
r 2
3,400
5/28/2009
2.5
< 0.05
< 0.06
< 0.14
1,150
5/27/2010
1.63
r 1.1
r 1.1
< 3.2
492
-
I013112011
0.41 J
< 0.36
< 0.32
< 0.75
122
--
-
MW-08
3/23/2006
671
1.340
1,230
9,100
124
--
--
5/8/2007
1,160
799
196
2 990
1,440
--
5/14/2008
600
1800
700
3,000
190
--
-
5/28/2009
1,390
2,050
357
3,310
1,560
--
--
MW-08R
5/27/2010
570
2,874
31,700
15,700
6,260
--
--
10/31/2011
8,000
3,180
32,100
17,200
3,170
< 1
< 5
5/22/2012
3,360
36,4001
17,800
3,920
e 5
119
6/15/2012 {�'
726
47 J
760
242 J
96.31
4,760
22,200
7/9/2012
4,540 J
1,870 J
17,100 J
10,800 J
1,530 J
6,570
4,500
8/14/2012
4,370
1,610
19,300
81780
2,000
7,010
1,560
9/19/2012
4,780
1,800
20,900
1 10,400
2,600
6,700
1,100
12/5/2012
7,760
2,440
31,900
13,800
4,560
2,410
635
2/26/2013
7,310
2,480
30,500
13,400
4,530
959
590
5/31/2013
3,040
30,500
12,500
4,200
439
437
MW-14
5/12/2003
< 0.5
< 0.5
¢ 0.5
< 1
0.52 J
--
--
12/9/2003
¢ 0.5
< 0.5
< 0.5
< 1
5.9
--
--
3/23/2006
< 0.5
< 0.5
< 0.5
- 1
= 0.5
--
-
5/8/2007
< 0.5
< 0.5
< 0.5
< i
< 0.5
--
-
5/14/2008
<0.5
<0.8
<0.7
<0.9
<0.5
-
-
5/28/2009
< 0.06
< 0.05
0.0771
E 0.14
c 0.06
--
-
512712010
<0.11
<0.11
<0.11
<0.32
<0.12
--
101311201 1
e 0.13
< 0.15
< 0.42 U
< 0.3
< 0.13
--
--
MW-15
3/23/2006
0.63 J
2.1
< 0.5
18.6
1.6
--
--
5/8/2007
< 0.5
< 0.5
< 0.5
2.2 J
< 0.5
--
--
5/14/2008
< 0.5
< 0.8
< 0.7
3.7 J
< 0.5
-
--
512712010
<0.11
<0.11
<0.11
<0.32
<0.12
--
--
1013112011
<0.13
<0.15
<0.13
<0.3
<0.13
--
-
MW-16
3/23/2006
¢ 2.5
90.8
15.8
836
2.8 J
--
-
5/14/2008
¢ 0.5
160
15
1,600
4.1 1
--
5/27/2010
3.6
54.7 J
5.1
525 J
1.3
--
1013112011
< 0.65
17.2
< 1.4 U
321
< 0.65
--
-
MW-17
5/13/2003
57.7
< 0.5
< 0.5
< 1
69
5/13/2003
40.8
< 0.5
< 0.5
< 1
63.3
12/9/2003
6.6
0.65 J
< 0.5
< 1
80.6
3/23/2006
1
< 0.5
< 0.5
r 1
58.9
--
5/8/2007
< 0.5
< 0.5
¢ 0.5
< 1
17A
5/14/2008
3.71
< 0.8
< 0.7
< 0.8
19
--
--
5/28/2009
7
< 0.05
0.076 J
< 0.14
14.5
--
--
5/27/2010
5.7
< 0.11
< 0.11
¢ 0.32
12.4
--
--
10/31/20 l 1
0.51
0.16 J
F 0,81UJ
0.5 71
8.9
--
--
P:18P%ProyegsV4W4163, CK- W-S- 381 KMIhvood S"eM 0 SAO ❑aMW.6 MalykaPTables%Caleb EcIA BP 24163 - Wales-2012.2013 - injection Momkonng Summary
711anol3. 511 PM

Appendix E
Historical Groundwater Analytical Summary
Former BP Service Station No. 24163
381 Knollwood Street
Winston-Salem, Forsyth County, North Carolina
MW-18
10/31/2011
3,140
998
11.100
8,950
1,140
8.2
446
5/22/2012
2,280
2.790
18,200
12,000
789
r 5
307
6/15/2012 {2'
373
910
4,800
3,910
114
10,600
3,410
7/9/2012
1,730 J
2,1701
15,000 J
9,750 J
676 J
2,300
835
8/14/2012
3,020
2,990
24,400
12,800
1,090
758
580
9/19/2012
3,190
3,090
22600
14,000
1,240
322
542
12/5/2012
3,370
2970
10100
12,800
1,380
32.2
436
2/26/2013
2, 510
2 970
10 1 QO
8,690
1,140
13.8
500
5/31/2013
2,780
3,070
8,210
5,740
1,000
83.3
475
MW-19
10/31/2011
2,390
1.380
8,790
7,040
5,160
3.7
425
5/22/2012
2,700
1.560
14.200
7,940
4,880
< 5
310
6/15/2012121
4,020
1.440
18,200
7,940
3,290
1,090
6,520
7/9/2012
_1.910
30,400 J
16,300
5,330
232
991
8/14/2012
2,420
1,650
14,200
1 8,370
4,090
469
1,090
9/19/2012
2,090
1 630
12900
8,640
3,960
260
690
12/5/2012
2,320
1,810
15 200
10,400
4,010
58.8
588
2/26/2013
2,210
1 110
10600
6,990
3,890
169
503
5/31/2013
1,830
894
8,820
5,250
3,120
1,530
606
Notes:
t'} Field duplicate
1�1Alkalinity, sulfate, and carbon dioxide samples were collected 6/14/2012 and volatile organic
analysis samples were collected 6/15/12.
- activated sodium persulfate injections were performed at the site from June 4, 2012, to June 9, 2012,
and from June 3, 2013, to June 6, 2013.
This table presents the results of all analyzes. Sample results have been qualified by URS based on the results of the data
review process, which is modeled after the USEPA Contract Laboratory Program (CLP) Nanorral Functional Guidelines
(NFG) for Superfund Organic Methods Data Review (EPA, June 2008) and USEPA CLP NFG for Inorganic Superfund Data
Review (USEPA, January 2010).
Gross Contamination Levels, effective April 16, 2012, obtamed from the NCDENR, Division of Waste Management, UST
< - Not detected at the specified detection limit GCL - Gross Contamination Level
gg1I - Micrograms per Liter MTBE - Methyl tert-Butyl Ether
mgll - Milligrams per Liter NE - Not established
J - Estimated value %-" = Not sampled or analyzed
U - Not resent above the associated level; blank contamination exists
Green highlight indicates GCL exceedance.
P:1BP1PrgeelslNC124163. CK, W-S. 381 xndnvobd Slreetri4 0 SO QAUW6 AnaocanTabWWC Web Edit BP 24163 - Wafer- 2012.2013 - Iiijecuon Monttoru+g Summary
711 a12013. 5 11 PM

APPENDIX F
Laboratory Analytical Report

I
I
e•-Hardcopy 2.0
Automated Report
Southeast
E ACCUTEE3T
ttttltli�
L A a 10 RAT OR I E s
Technical Report for
Atlantic Richfield Company
URSNCM:SIS 24163: 381 Knollwood St, Winston-Salem, NC
38436760
Accutest Job Number: FA5175
Sampling Date: 05/31/13
Report to:
URS Corporation
1600 Perimeter Park Drive
Suite 400
Morrisville. NC 27560
ATTN: Martha Meyers -Lee
Total number of pages in report: 40
Acccw
u `1a�
a t
Test results contained within this data package meet the requirements
of the National Environmental Laboratory Accreditation Conference
andlor state specific certification programs as applicable.
kl�� -
Harry Behzadi, Ph. D.
Laboratory Director
Client Service contact: Heather Wandrey 407-425-6700
Certifications FL (E83510), LA (03051), KS (E-10327), IA (366), IL (200063). NC (573), NI (FLO02), SC (96038001)
Do17 ELAP (L•A-13 L2229), CA (04226CA), TX (TZ04704404), AK, AR, GA, KY, MA, NV, OK, UT, VA, WA, W[
This report shali not he reproduced, except in its entirety, without the written approval of Accutest Laboratories.
Test results relate only to samples analyzed.
Southeast - 4405 Vineland Road - Suite C-15 - Orlando, FL 32811
Accutest I.atx.-ranwres is the s 4e authcua► for authorizing edits ❑r modifications to this
doeumcnt Unauthorized mndiTicatwn dthis report is strictly prohibited
tel: [phone] • fax: [phone] -
http://www. accutest. com
1 of 40
�ACCEJTES�:

Sections:
Table of Contents
1
Section 1: Sample Summary................................................................................................... 3
Section2: Case Narrative/Conformance Summary .............................................................. 4
Section 3: Summary of Hits ....................... ..................................................... I .................... --- 6
Section4: Sample Results........................................................................................................
8
4.1: FA5175-1: MW-3.........................................................................................................
9
4.2: FA5175-2: MW-5R......................................................................................................
11
4.3: FA5175-3: MW-8R......................................................................................................
13
4.4: FA5175-4: MW-18.......................................................................................................
15
4.5: FA5175-5: MW-19.......................................................................................................
17
Section 5: Misc. Forms............................................................................................................
19
5.1: Chain of Custody...........................................................................................................
20
Section 6: GOMS Volatiles - QC Data Summaries..............................................................
23
6.1: Method Blank Summary ................................................................................................
24
6.2. Blank Spike Summary ...................................................................................................
28
6.3: Matrix Spike/Matrix Spike Duplicate Summary ...........................................................
32
Section 7: General Chemistry - QC Data Summaries..........................................................
36
7.1: Method Blank and Spike Results Summary ..................................................................
37
7.2: Duplicate Results Summary..........................................................................................
38
7.3: Matrix Spike Results Summary.....................................................................................
39
7.4: Matrix Spike Duplicate Results Summary ....................................................................
40
'■ 2 of 40
A,C0U-rF-S'i:
K6o7c —....... .s.

Accutest Laboratories
Sample Summary
Atlantic Richfield Company
Job No: FA5175
URSNCM:SIS 24163: 381 Knollwood St, Winston-Salem, NC
Project No: 38436760
Sample Collected Matrix Client
Number Date Time By Received Code 'Type Sample ID
FA5175-1 05/31/13 09:50 SH 06/01/13 AQ Ground Water MW-3
FA5175-2 05/31/13 11:35 SH 06/01/13 AQ Ground Water MW-5R
FA5175-3 05/31/13 12:20 SH 06/01/13 AQ Ground Water MW-8R
FAS1754 05/31/13 11:00 SH 06/01/13 AQ Ground Water MW-18
FA5175-5 05/31/13 10:20 SH 06/01/13 AQ Ground Water MW-19
■■ 3 of 40
■,acC�u rE�E3-r-
FA5175 "

SAMPLE DELIVERY GROUP CASE NARRATIVE
Client Atlantic Richfield Company Job: FA5175
Site: URSNCM:SIS 24163: 381 Knollwood St, Winston-Salem, NC Deport Data: 6/18/2013 6:23:IO PM
5 Sample were collected an 05/31/2013 and were received at Accutest SE on OGOI12013 properly preserved, at 2.8 Deg. C and intact.
These Samples received an Accutest job nwnber of FA5175. A listing of the Laboratory Sample ID, Client Sample ID and dates of
collection are presented in the Results Summary Section ofthis report
Except as noted below, all method specified calibrations and quality control performance criteria were met for this joh. For more
info mtation, please refer to QC summary pages.
Volatiks by GCMS By Method SM 6200B
Matrbt: AQ Batch ID: VA1267
All samples were analyzed within the recommended method holding time.
All method blanks for this batch meet method specific criteria
Sample(s) FA5164-11MS, FA5164-11 MSD were used as the QC samples indicated.
FA5175-3: Sample was not preserved to a pH r 2.
Matrb(: AQ
Batch lU VA1268
All samples were analyzed within the recommended method holding tune.
All method blanks for this batch meet method specify criteria
Sample(s) FA5175-2MS were used as the QC samples indicated.
Matrix Spike Recovery(s) for Tohiene are outside control limits. Outside control limits due to high level in sample relative to
spice amount. For method perforrrrance in a clean matrix, refer to Blank Spike.
FA5175-2: Sample was not preserved to a pH < 2.
M &bL AQ
Batch ID VA1271
All samples were analyzed within the recommended method holding time.
All method blanks for this batch meet method specific criteria.
Samples) FA5207-8MS, FA5247-8MSD were used as the QC samples indicated.
Matrb(: AQ Batch Or VE838
Ali samples were analyzed within the recommended method holding time.
All method blanks For this batch meet method specific: criteria.
Samples) FA5168-1MS, FA5169-1MS1) were used as the QC samples indicated.
FA5I75-2: Sample was not preserved to a pH < 2; reported results are considered minimum values.
Wet Chemistry By Method EPA 3001SW846 9056A
Matrix: AQ Batch ID: GP21886
All samples were prepped within the recommended method holding time.
All samples were analyzed within the recommended method holding time.
All method blanks for this batch meet method specific criteria.
Sample(s) FA5] 59-7MS, FA5159-7MSD were used as the QC samples for Sulfate.
Wet Chemistry By Method SM 19 2320B
Metrk AQ Batch ID: GN56146
All samples were analyzed within the recommended method holding time.
A11 method blanks for this batch meet method specfy criteria.
Sample(s) FA5290-3MS. FA5290-3DUP were used as the QC samples for Alkalinity, Total as CaCO3.
RPD(s) for Duplicate for Alkalinity, Total as CaCO3 are outside control limits for sample GN56146-DI. RPD acceptable due
to low duplicate and sample concentrations.
Tuesday, June 18, 2013
Page 1 of
10 4 of 40
ACC LJTEST.

Wet Chemistry By Method sM19 2320B
Matrix: AQ Batch IlDr GN56217
All samples were analyzed within the recommended method holding time.
All method blanks for this batch meet method specific criteria_
Samples) FA5175-21)UP, FA5175-2MS were used as the QC samples for Alkalinity, Total as CaCO3.
Matrix Spke Recovery(s) for Alkalinity, Total as CaCO3 are outside control limits. Spike recovery indicates possible matrix
interference. For method performance in a clean matrix, refer to Blank Spike.
Accutest Laboratories Southeast (ALSE) certifies that this report meets the project requirements for analytical data produced
for the samples as received at ALSE and as stated on the COC. ALSE certifies that the data meets the Data Quality Objectives
for precision, accuracy and completeness as specified in the ALSE Quality Manual except as rioted above. This report is to be
used in its entirety. ALSE is not responsible for any assumptions of data quality if partial data packages are used.
Narrative prepared by:
Bate: June 18, 2013
Kan Benham, Client Services (signature on file)
Tues&y, June 18, 2013 Paget oft
■ s of eta
ACMU-rEST.
F6{17F nr....n rew...

Summary of Hits Page 1 of 2
Job Number: FA5175
Account: Atlantic Richfield Company
Project: URSNCM:S/S 24163: 381 Knollwood St, Winston-Salem, NC
Collected: 05/31 / 13 LP
Lab Sample ID Client Sample 1D Result/
Analyte Quai RI. MDL Units Method
FA5175-1 MW-3
Benzene
0.32 ]
0.50
0.10
ug/l
SM 6200B
Methyl Tert Butyl Ether
10.5
0.50
0.10
ug/l
SM 6200B
Alkalinity, Total as CaCO3
350
5.0
0.60
mg/l
SM19 2320B
Carbon Dioxide
334
5.0
5.0
mg/l
SM19 45000O2D
Sulfate
17.9
4.0
1.2
mg/l
EPA 300/SW846 9056A
FA5175-2 MW-5R
Benzene a
1410
100
20
ug/l
SM 6200B
Toluene a
5930
100
20
ug/l
SM 6200B
Ethy[benzene a
1380
100
20
ug/l
SM 6200B
Xylene (total) a
6220
300
43
ug/E
SM 6200B
Methyl Tert Butyl Ether b
1150
25
5.0
ug/E
SM 6200B -
Alkalinity, Total as CaCO3
2750
25
3.0
mg/1
SM19 2320B
Carbon Dioxide
1560
5.0
5.0
mg/l
SM19 45000O2D
Sulfate
4680
200
60
mg/l
EPA 300/SW846 9056A
FA5175-3 MW-8R
Benzene a
6540
1000
200
ug/l
SM 6200B
Toluene a
30500
1000
200
ugli
SM 6200B
Ethy}benzene a
3040
50
1.0
ug/i
SM 6200B -
Xylene (total) a
12500
3000
430
ug/l
SM 6200B
Methyl Tert Butyl Ether a
4200
50
10
ug/l
SM 6200B
Alkalinity, Total as CaCO3
580
25
3.0
mg/l
SM 19 2320B
Carbon Dioxide
437
5.0
5.0
mg/l
SM19 45000O2D
Sulfate
439
20
6.0
mg/l
EPA 300/SW846 9056A
FA5175-4 MW-18
Benzene
2780
50
to
ug/l
SM 6200B
Toluene
8210
500
100
ug/l
SM 6200B
Ethylbenzene
3070
50
10
ug/l
SM 6200B
Xylene (total)
5740
150
22
ug/l
SM 6200B
Methyl Tert Butyl Ether
1000
50
10
ug/i
SM 6200B
Alkalinity, Total as CaCO3
352
5.0
0.60
mg/l
SM19 2320E
Carbon Dioxide
475
5.0
5.0
mg/l
SM19 45000O2D
Sulfate
83.3
4.0
1.2
mg/l
EPA 300/SW846 9056A
FA5175-5 MW-19
Benzene
1830
130
25
ug/1
SM 6200B
Toluene
8820
130
25
ug/i
SM 6200B
t■ 6 of 40
.wccur�s-r.

Summary of Hits Page 2 of 2
Job Number: FA5175
Account: Atlantic Richfield Company
Project: URSNCM:S/S 24163: 381 Knollwood St, Winston-Salem, NC
Collected: 05/31/13
Lab Sample ID Client Sample I❑ Result/
Anahte Qual RL MDL Units Method
Ethylbenzene 894
130
25
ugll
SM 6200B
Xylene (total) 5250
380
54
ugll
SM 6200B
Methyl. Tert Butyl Ether 3120
130
25
ugll
SM 6200B
Alkalinity, Total as CaCO3 582
25
3.0
mg/l
SM19 2320E
Carbon Dioxidc 606
5.0
5.0
mg/l
SM 19 45000O2D
Sulfate 1530
50
15
mg/l
EPA 300/SW846 9056A
(a) Sample was not preserved to a pH < 2.
(b) Sample was not preserved to a pH < 2; reported results are considered minimum values.
7 of 40
,0.CCl_ -FE-Me- T.
FA5175

Section 4
■; Southeast
w ,4cCu-TES-r
L A D 0 R A T 0 R I E S
Sample Results
Report of Analysis
,0 S of 40
ACCUTr=S-n

Accutest Laboratories
Report of Analysis Page 1 of I
Client Sample ID: MW-3
Lab Sample ID: FA5175-1 Date Sampled: 05/31/13
Matrix: AQ - Ground Water Date Received: 06/01/13
Method: SM 6200B Percent Solids: nla
Project: URSNCM:SIS 24163: 381 Knollwood St, Winston-Salem, NC
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run 41 A0180670.13 1 06/11/13 TD n`a n, a VA1271
Run #2
Purge Volume
Run #1 10.0 ml
Run #2
Purgeahle. Aromatics, MTBE
CAS No.
Compound
Result
RL
MDL Units Q
71-43-2
Benzene
0.32
0.50
0.10 ugll J
108-88-3
Toluene
ND
0.50
0.10 ugll
100-41-4
Ethylbenzene
N❑
0.50
0.10 ugll
1330-20-7
Xylene (total)
ND
1.5
0.22 ugll
1634-04-4
Methyl Tert Butyl Ether
10.5
0.50
0.10 ugll
CAS No.
Surrogate Recoveries
Run# 1
Run# 2
Limits
1868-53-7
Dibromofiuoromethane
990/0
70-130%
17060-07-0
1,2-Dichloroethane-D4
960/6
70-130%
2037-26-5
Toluene-D8
97%
70-130%
460-00-4
4-Bromofluorohenzene
100%
70-130%
ND = Not detected MDL - Method Detection Limit
RL = Reporting Limit
E = indicates value exceeds calibration range
J = Indicates an estimated value
B = Indicates analyte found in associated method blank
N = Indicates presumptive evidence of a compound
,■ 9 of 40
.ACCIJTtWBT
F8417i ••"' n

Accutest Laboratories
Report of Analysis
Client Sample ID: MW-3
Lab Sample ID: FA5175-1 Date Sampled: 05/31/13
Matrix: AQ - Ground Water Date Received: 06/01/13
Percent Solids: nla
Project: URSNCM:SIS 24163: 381 Knollwood St, Winston-Salem, NC
Page 1 of 1
General Chemistry
Analyte
Result
RL
MDL
Units
OF Analyzed By Method
Alkalinity, Total as CaCO3
350
5.0
0.60
mgll
1 D6/09113 11-0014H SM192320B
Carbon Dioxide
334
5.0
5.0
mgll
1 WOW 1311:00AC SM1945ODCO2D
Sulfate
17.9
4.0
1.2
mg/l
2 06/17/13 19 � 3 5 AA EPA 3001SW&469056A
RL = Reporting Limit U = indicates a result < MDL
MDL = Method Detection Limit S = Indicates a result > = MDL but < Rl.
A
U of 40
' ACCLJTEST.

..r
Accutest Laboratories
Report of Analysis
Client Sample ID: MW-5R
Lab Sample ID: FA5175-2 Date Sampled: 05/31/13
Matrix: AQ - Ground Water Date Received: 06/01/13
Method: SM 6200B Percent Solids: nla
Project: URSNCM:SIS 24I63: 381 Knoliwood St, Winston-Salem, NC
Page 1 of 1
File 1D
DF
Analyzed
By
Prep Date
Prep Batch
Analvtical hatch
Run #1 a E024497.D
50
06/10/13
TD
nla
n: a
VE838
Run #2 h AO180582.D
200
06/07/13
JG
nla
a
VA1268
Purge Volume
Run #1 10.0 ml
Run #2 10.0 ml
Purgeable Aromatics, MTBE
CAS No. Compound
Result
RL
MDL Units Q
7143-2 Benzene
1410c
100
20 ug/l
108-88-3 Toluene
5930 c
100
20 ugll
10041-4 Ethylbenzene
13801:
100
20 ugll
1330-20-7 Xylene (total)
6220 c
300
43 ugll
1634-04-4 Methyl Tert Butyl Ether
1150
25
5.0 ugjl
CAS No. Surrogate Recoveries
Runk 1
Run# 2
Limits
1868-53-7 Dibromofluoromethane
94%
101%
70-130%
17060-07-0 1,2-Dichioroethane-D4
97%
117%
70-130%
2037-26-5 Toluene-138
102%
98%
70-130%
460-00-4 4-Bromofluorobenrene
1021%
94%
70-130%
(a) Sample was not preserved to a pH <
2; reported results are considered minimum values.
(b) Sample was not preserved to a pH <
2.
(c) Result is from Run# 2
ND = Not detected MDL - Method Detection Limit
RL = Reporting Limit
E = Indicates value exceeds calibration range
A
i�
J = Indicates an estimated value
B = Indicates analyte found in associated method blank
N = Indicates presumptive evidence of a compound
0 11 of 40

Accutest Laboratories
Report of Analysis
Client Sample ID: MW-5R
Lab Sample ID: FA5I75-2 Date Sampled: 05/31/13
Matrix: AQ - Ground Water Date Received: 06/01/13
Percept Solids. nla
Project: URSNCM:SIS 24163: 381 Knoftood St, Winston-Salem, NC
Page i of 1
General Chemistry
Analyte
Result
RL
MDL
Units
DF Analyzed By Method
Alkalinity, Total as CaCO3
2750
25
10
mg/1
l 06/13/13 09:32 HH SM19 2320E
Carbon Dioxide
1560
5.0
5.0
mg/I
l 06/13/13 W 32 HH SM19 45000O2D
Sulfate
4680
200
60
mgll
100 06/17/13 19752 AA EPA 3001SWW 9056A
RL = Reporting Limit U = Indicates a result < MDL
MDL = Method Detection Limit B = Indicates a result > = MDL but E RL
'a 12 of 40
ACCLJTEBT.

Accutest Laboratories
Report of Analysis
Client Sample ID: MW-8R
Lab Sample 11): FA5175-3 Date Sampled: 05/31/13
Matrix: AQ - Ground Water Date Received: 06/01/13
Method: SM 6200B Percent Solids: nla
Project: URSNCM:SIS 24163: 381 Knollwood St; Winston-Salem, NC
Page 1 of 1
File ID
DF
Analyzed
By
Prep Date
Prep Batch
Analytical Batch
Run 91 a A0180558.D
100
06/06/13
AP
nla
nla
VA1267
Run 42 a A0180560.D
2000
06/06/13
AP
nla
nla
VA1267
Purge Volume
Run 41 10.0 ml
Run 42 10.0 ml
Purgeable Aromatics, MTBE
CAS No.
Compound
71-43-2
Benzene
108-88-3
Toluene
100-41-4
Ethylbenzene
1330-20-7
Xylene (total)
1634-04-4
Methyl Tert Butyl Ether
CAS No.
Surrogate Recoveries
1868-53-7
❑ibromofluoromethane
17060-07-0
1,2-Dichloroethane-D4
2037-26-5
Toluene-138
460-004
4-Bromofluorobenzene
(a) Sample was not preserved to a pA < 2.
(b) Result is
from Run# 2
Result
RL
MDL
Units Q
6540 b
1000
200
ugll
30500 b
1000
200
ugll
3040
50
10
ugll
12500 b
3000
430
ug/l
4200
50
10
ugll
Run# 1 Run# 2 Limits
97%
97%
70-130%
98%
96°%
70-130%
99%
101%
70-130%
97%
99%
70-130%
ND = Not detected MDL - Method Detection Limit
RL = Reporting Limit
E = Indicates value exceeds calibration range
I = Indicates an estimated value
B = Indicates analyte found in associated method blank
N = Indicates presumptive evidence of a compound
1a 13 of 40
ACCLJTES_r
crc.,e ..ee.•e.en

Accutest Laboratories
Report of Analysis
Client Sample Id: MW-8R
Lab Sample ID: FA5175-3 Date Sampled: 05/31/13
Matrix: AQ - Ground Water Date Recei-,red: 06/01/13
Percent Solids: nla
Project: URSNCM:SIS 24163: 381 Knollwood St, Winston-Salem, NC
General Chemistry
Analyte Result
Alkalinity, Total as CaCO3 580
Carbon Dioxide 437
Sulfate 439
RL = Reporting Limit
MDL = Method Detection Limit
Page 1 of 1
RL
MDL
Units
DF
Analyzed By Method
25
3.0
mg/1
1
06/13/13 09 32 HH SM19 2320E
5.0
5.0
mgll
1
06/13/13 09 32 HH SM 19 45000O2D
20
6.0
mgll
10
D6117/13 20 09 AA EPA 30015W&46 9056A
U = Indicates a result ¢ MDL
B = Indicates a result > = MDL but < RL
■�■ 14 of 40
At :CUTEST.
CRC�'�; i��oe�i e�e•

Accutest Laboratories
Report of Analysis
Client Sample ID: MW-18
Lab Sample ID: FA5175-4 Date Sampled: 05/31/ 13
Matrix: AQ - Ground Water Date Received: 06/01/13
Method: SM 6200B Percent Solids: nla
Project: URSNCM:S/S 24163: 381 KnolNkoud St, Winston-Salem, NC
Page 1 of 1
File ID
DF
Analyzed
By
Prep Date
Prep Batch
Analytical Batch
Run #1 A0180561.13
100
06/06/13
AP
Tva
n:`a
VA1267
Run #2 A0180559.D
1000
06/06/13
AP
n/a
n: a
VA1267
Purge Volume
Run # 1 10.0 ml
Run #2 10.0 ml
Purgeable Aromatics, MTBE
CAS No.
Compound
71-43-2
Benzene
108-88-3
Toluene
100-41-4
Ethylbenzene
1330-20-7
Xylene (total)
1634-04-4
Methyl Tert Butyl Ether
CAS No.
Surrogate Recoveries
1868-53-7
❑ibromofluoromethane
17060-07-0
1, 2-Dichloroethane-D4
2037-26-5
Toluene-138
460-00-4
4-13romofluorobenzene
(a) Result is from Run# 2
Result
RL
MDL Units Q
2780
50
10 ugll
8210 a
500
100 ugll
3070
50
10 ugll
5740
150
22 ug11
1000
50
10 ug/l
Run# 1
Run# 2
Limits
97%
98%
70-130%
96%
97%
70-130%
100%
101%
70-130%
96%
101%
70-130%
ND = Not detected MDL - Method Detection Limit
RL = Reporting Limit
E = Indicates value exceeds calibration range
J = Indicates an estimated value
B = Indicates analyte found in associated method blank
N = indicates presumptive evidence of a compound
�0 15 of 40
ACCIJTEST
cnci7c

Accutest Laboratories
Report of Analysis
Client Sample ID: MW-18
Lab Sample ID: FA5175-4 Date Sampled: 05/31/13
Matrix: AQ - Ground Water Date Received: 06/01/13
Percent Solids: nla
Project: URSNCM:SIS 24163: 381 Knollwood St, Winston-Salem, NC
Page 1 of I
General Chemistry
Analyte
Result
RL
PADL
Units DF
Analyzed By Method
Alkalinity, Total as CaCO3
352
5.0
0.60
mg/1 1
06/08/13 11:00 HH SM19 2320B
Carbon Dioxide
475
5.0
5.0
mgll 1
06/08/13 11 00 AC 9M19 45000O2D
Sulfate
83.3
4.0
1.2
mgll 2
06/17/13 2100 AA EPA 3001SWS" 9056A
RL = Reporting Limit U = Indicates a result < MDL
MDL = Method Detection Limit B = Indicates a result > = MDL but < RL
'0 16 of 40
ACCLJ'TEBT.

Accutest laboratories
Report of Analysis
Client Sample ID: MW-19
Lab Sample ID: FA5175-5 Date Sampled: 05/31/13
Matrix: AQ - Ground Water Date Received: 06/01/13
Method: SM 6200B Percent Solids: n/a
Project: URSNCM:S/S 24163: 381 Knollwood St, Winston-Salem, NC
Page i of 1
File ID DF Analyzed By Prep Date Prep Batch Analytical Batch
Run #1 A0I80669.D 250 06/11/13 T❑ n/a n/a VA1271
Run #2
Purge Volume
Run #1 10-o mI
Run #2
Purgeable Aromatics, MTBE
CAS No.
Compound
Result
RL
MDL Units Q
71-43-2
Benzene
1830
130
25
ug/l
108-88-3
Toluene
8820
130
25
ug/l
100-41-4
Ethylbenzene
894
130
25
ug/1
1330-20-7
Xylene (total)
5250
380
54
ug/l
1634-04-4
Methyl Tert Butyl Ether
3120
130
25
ug/1
CAS No.
Surrogate Recoveries
Run# 1
Run# 2
Limits
1868-53-7
Dibromofluoromethane
96%
70-130%
17060-07-0
1,2-Dicbloroethane-D4
96%
70-130%
2037-26-5
Toluene-D8
98%
70-130%
460-00-0
4-Bromofluorobenzene
1000/0
70-130%
N❑ = Not detected MDL - Method Detection Limit
RL = Reporting Limit
E = indicates value exceeds calibration range
J = Indicates an estimated value
B = Indicates analyte found in associated method blank
N = Indicates presumptive evidence of a compound
■■ 17 of 44
■ a�cu-r �s-r:

Accutest Laboratories
Report of Analysis
Client Sample ID: MW-19
Lab Sample ID: FA5175-5 Date Sampled: 05/31/13
Matrix: AQ - Ground Water Date Received: 06101/13
Percent Solids: n1a
Project: URSNCM:SIS 24163: 381 Knoilwood St, Winston-Salem, NC
General Chemistry
Analyte
Result
Alkalinity, Total as CaCO3
582
Carbon Dioxide
606
Sulfate
1530
RL = Reporting Limit
MDL = Method Detection Limit
Page I of 1
RL
MDL
Units DF
Analyzed By Method
25
3.0
mgli 1
06/13/13 09:32HH SM19 2320E
5.0
5.0
mg/1 1
0611311309:32HH SM1945000O2D
50
15
mg/1 25
0&17113 21:17 AA EPA 30a1SW846 9056A
U = Indicates a result < MDL
B = Indicates a result > = MDL but < RL
,■ 18 of 40
ACCU`r�8�

■ Southeast
N , CDC3U-rF-s-r
L A n 0 n A T 0 R I E S
Misc. Forms
Custody Documents and Other Forms
Z zicludes the following where applicable:
Chain of Custody
Section 5
0
I19 of 40
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FA5175: Chain of Custody
Page 1 of 3
,■ 20 of 40
.4.CCLJTaST.

ACCUrEST LABORATORIES SAMPLE RECEIPT CONFIRMATION
ACc=s-rs TOB N[IASBE - d4 J 1 7 S -_ Q.mSI: OR 6 _ PRoIEcr:
DATEITIMB RkcEIVED n b-ol -1 ri_ jO 3 D Qmli1OIYY 24:Ip} NDWER OF COOL ER S "CETVED.
M3THOD0FDRLIVI!RY: (igii�) UPS ACCUTESTCOURIER GJE GUND DELIVERY OTHER
AIRBILL NUNERMts: 2� 1 :232 g ,5 31 3 -K3 2 - — —
COOLER DWQRMAYTON
CtWDIDY SIAL NOT PRESENT Olt, NOT INTACT
CHAIN OF CUSTODY NOT RECEIVED [CDC]
$AMPLE DATBS OR TDMS UNCLEAR OR MISEM
TMOERATURE CRrr8REA NOT MET
—WUTTCE PRE98N'T -
PROVIDED
NOT ON COC
INTACT
WATER TRIP BLAHM
SOIL TI M BLANK
MISC, REORMAUON
NUMMKOP ENCORES 7 na M Av $43RA11
NOlu m OF $033 FIELDIM 7
NUMBER OF LAB MTERF.D hWTAL87
Tl�M M CORR, FACTOR
SSBkVP� TEMPS:
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L_pxamicT NUMBOF CONTADIRS VEkBCSIV80lWZDPMR YPRESERVED
R FMCISNT VOLUME FOR ANALYSTS
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'S ON COC DO NOT HATCH LABEL
IC VIALS SAV5 BRADQ,RCH QI ACAO BUBBLES] -
rMM 1BCIQVlIDM" ANALYMS NOT REQUESTED
1 BOTEIS$ RBCZIVHD FOR ANALYNS REQUESTED
xn.SAAFILTSY]'NCi OR cOla'OSI17M IIiSIBUCTIONS
lDq CONTADeRM XWEMED BROXM4
SOL B TAR NOT RECEIVED
SS FMD KIT FROG TIMUN 41 HOIWS
iMXML CHL0TJ)M PRE9ENI'
WMCAME. TO IPA 6MESRIRE DR 2 GkM CAROLEHAORGAMC9I
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FA5175: Chain of Custody
Page 2 of 3
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N ACCLJ-TEST
L A B O R A f O R i L
GC/MS Volatiles
QC Data Summaries
Includes the following where applicable:
• Method Blank Summaries
• Blank Spike Summaries
• Matrix Spike and Duplicate Summaries
Section 6
I-0j)
■o 23 of 40

Method Blank Summary Page 1 of 1
Job Number: FA5175
Account: BPAMSS Atlantic Richfield Company
Project: URSNCM:SIS 24163: 381 Knollwood St, Winston-Salcm. NC
Sample
File ID DF
Analyzed
By
Prep Date
Prep Batch
Analytical Batch
VA1267-MB
A0180546.1) 1
06/06/13
AP
nla
n:'a
VA1267
The QC reported here applies to the following samples: Method: SM 6200B
FA5175-3, FA5175-4
CAS No.
Compound
Result
RL MDL
Units Q
71-43-2
Benzene
ND
0.50 0.10
ugll
100-41-4
Ethylbenzene
ND
0.50 0.10
ugll
1634-04-4
Methyl Tert Butyl Ether
ND
0.50 0.10
ugll
108-88-3
Toluene
N❑
0.50 0.10
ugll
1330-20-7
Xylene (total)
ND
1.5 0.22
ugll
CAS No.
Surrogate Recoveries
Limits
1868-53-7
Dibromofluoromethane
47%
70-130%
17060-07-0
1,2-Dichloroethane-D4
97%
70-130%
2037-26-5
Toluene-D8
101%
70-130%
460-00-4
4-Bromofluorobenzene
1021%
70-130%
Cr.
a
i
L
■ 24 of 40
■ accu -r�s-c
kti cq,. •��es�reniae

Method Blank Summary Page 1 of 1
Job Number: FA5175
Account: BPAMSS Atlantic Richfield Company
Project: URSNCM:S/S 24163: 381 Knollwood St, Winston-Salem, NC
Sample
File ID DF
Analyzed
By
Prep Date
Prep Batch
Analytical Batch
VA1268-MB
A0180578.1) 1
06/07/13
3G
n a
n a
VA1268
The QC reported here applies to the following samples:
FA5175-2
CAS No.
Compound
Result
RL
71-43-2
Benzene
ND
0.50
100-41-4
Ethylbenzene
ND
0.50
108-88-3
Toluene
ND
0.50
1330-20-7
Xylene (total)
ND
L5
Method: SM 6200B
MDL Units Q
0.10
ug/l
0.10
ug/I
❑,10
ug/]
0.22
ug/l
CAS No.
Surrogate Recoveries
Limits
1868-53-7
❑ibromolluoromethane
101%
70-I30%
17060-07-0
1.2-Dichloroethane-D4
117%
70-130%
2037-26-5
Toluene-D8
97°/6
70-130%
460-00-4
4-Bromofluorobenzene
94%
70-130%
25 of 40
ACCEJ���T

Method Blank Summary page i ter 1
Job Number: FA5175
Account: BPAMSS Atlantic Richfield Company
Project: URSNCM:S/S 24163. 381 Knollwood St, Winston-Salem, NC
Sample
File ID
DF
Analyzed
By
Prep Date
Prep Batch
Analytical Batch
VE838-MB
E024490. ❑
1
06/ 10/13
TD
nla
n'a
VE838
The QC reported here applies to the following samples:
FA5I75-2
CAS No. Compound Result RL
1634-04-4 Methyl Ten Butyl Ether ND 0.50
Method: Ski 61-00B
NFDL Units Q
0.10 ugll
CAS No.
Surrogate Recoveries
Limits
1869-53-7
Dibromofluoromethane
96%
70-130%
17060-07-0
1,2-❑ichloroethane-D4
98%
70-130%
2037-26-5
Toluene-DS
103%
70-130%
460-00-4
4-Bromofluorobenxene
103%
70-130%
■ 26 of 40
(♦ ACCIJTEST.
FA547F .•....r.. u.

Method Blank Summary Page 1 of 1
.lob Number: FA5175
Account: BPAMSS Atlantic Richfield Company
Project: URSNCM:SIS 24163. 381 Knollwood St. Winston-Salem, NC
;ample
File 1D DF
Analyzed
By
Prep Date
Prep Batch
Analytical Batcl
rA1271-MB
A0180655.1) 1
06/11/13
TD
rn:a
n•'a
VA1271
The QC reported here applies to the Following samples: Method: SM 6200B
FA5175-1, FA5175-5
CAS No.
Compound
Result
RL MDL
Units Q
71-43-2
Benzene
ND
0.50 O.10
ugll
100-41-4
Ethylbenzene
ND
0.50 0.10
ugll
1634-04-4
Methyl Tert Butyl Ether
ND
0.50 0.10
ugll
108-88-3
Toluene
N❑
0.50 0.10
ugll
1330-20-7
Xylene (total)
ND
1.5 0.22
ugll
CAS No.
Surrogate Recoveries
Limits
1868-53-7
Dibromofluoromethane
97%
70-130%
17060-07-0
1,2-Dichloroethane-D4
96%
70-130°%
2037-26-5
Toluene-D8
98°%
70-130°%
460-00-4
4-Bromofluorobenzene
101%
70-130%
Fn
27 of 40
ACCLJTEST
rA S174 •ne-wrier

Blank Spike Summary Page 1 of 1
Job Number: FA5175
Account: BPAMSS Atlantic Richfield Company
Project: URSNCM:SIS 24163: 381 Knoilwood St, Winston-Salem, NC.
Sample
File ID DF
Analyzed
By
Prep hate
Prep Batch
Analytical Batch
VA1267-BS
A0I80554,D 1
06/06/13
AP
n'a
nla
VA1267
The QC reported here applies to the following samples: Method: SM 6200B
FA5175-3, FA5175-4
CAS No. Compound
71-43-2
Benzene
100-41-4
Ethyibenzene
1634-04-4
Methyl Tert Butyl Ether
108-88-3
Toluene
1330-20-7
Xylene (total)
CAS No. Surrogate Recoveries
1869-53-7 Dibromofluoromethane
17060-07-0 1,2-Dichloroethane-D4
2037-26-5 Toluene-138
460-00-4 4-Bromofluorobenzene
Spike
BSP
BSP
ug/I
ugll
%
Limits
10
11.0
110
70-130
10
11.9
119
70-130
10
9.1
91
70-130
10
10.9
109
70-130
30
33.8
113
70-130
BSP Limits
102%
70-130%
99%
70-130%
97%
70-130%
93%
70-130%
P
i�
L
* = Outside of Control Limits.
■ 28 of 40
■.�ccurtt~s�

Blank Spike Summary Page 1 of I
.lob Number: FA5175
Account: BPAMSS Atlantic Richfield Company
Project: URSNCM:SIS 24163: 381 Knollwood St, Winston-Salem, NC
Sample
File ID DF
Analyzed
By
Prep Date
Prep Batch
Analytical Batch
VA1268-BS
A0180576.D 1
06/07/13
]G
ri/a
n.'a
VA1268
The QC reported here applies to the following samples:
FA5175-2
Spike
BSP BSP
CAS No.
Compound
ug/I
ugll %
Limits
7I-43-2
Benzene
10
10.8 108
70-130
100-41-4
Ethylbenzene
10
11.4 I14
70-130
108-88-3
Toluene
10
10.5 105
70-130
1330-20-7
Xylene (total)
30
33.0 110
70-130
CAS No.
Surrogate Recoveries
BSP
Limits
1868-53-7
Dibromofluoromethane
105%
70-130%
17060-07-0
1,2-Dichloroethane-134
120%
70-130%
2037-26-5
Toluene-D8
95%
70-130%
460-00-4
4-Bromofluorobenz,ene
92%
70-130%
Method: SM 6200B
* 4 Outside of Control Limits.
0 29 of 40
w.a ccu-rF_s-F
FAF075 �•""'"*•"1e•

Blank Spike Summary
Job Number: FA5175
Account: BPAMSS Atlantic Richfield Company
Project: URSNCM:SIS 24163: 381 Knollwood St. Winston-Salem, NC
Page 1 of 1
File ID DF Analyzed By Pre} Date Prep Batch. Analytical Batch
E024488.13 1 06/10/13 TD nla n a VE838
The QC reported here applies to the following samples:
FA5I75-2
CAS No. Compound
1634-04-4 Methyl Tert Butyl Ether
CAS No. Surrogate Recoveries
1868-53-7 Dibromofluoromethane
17060-07-0 1,2-Dichloroethane-D4
2037-26-5 Toluene-D8
460-00-4 4-Bromofluorobenzene
Spike BSP BSP
ugll ugll % Limits
10 8.5 85 70-130
BSP Limits
99%
70-130%
100%
70-130%
100%
70-130%
100%
70-130%
Method: SM 6200B
* = Outside of Control Limits.
■ 30 of 40
■.o.CI--u-rEtzs--r
rA107A ......... 1..

Blank Spike Summary Page l of 1
.lob Number: FA5175
Account: BPAMSS Atlantic Richfield Comganv
Project: URSNCM:S/S 24163: 381 Knoliwood St, Winston-Salem, NC
Sample
File ID DF
Analyzed
By
Prep Bate
Prep Batch
Analytical Batch
VA1271-BS
A0180653.D l
06/11/13
TD
n'a
nla
VA1271
The QC reported here applies to the following samples:
FA5175-1, FA5175-5
Spike
BSP BSP
CAS No.
Compound
ugll
ug1l %
Limits
7I-43-2
Benzene
10
93 93
70-130
100-41-4
Ethylhenzene
10
9.3 93
70-130
1634-04-4
Methyl Tert Butyl Ether
I0
10 100
70-130
108-88-3
Toluene
10
9.2 92
70-130
1330-20-7
Xylene (total)
30
28.8 96
70-130
CAS No.
Surrogate Recoveries
BSP
Limits
1868-53-7
❑ibromofluoromethane
99%
70-130%
17060-07-0
1,2-Dichloroethane-134
98%
70-130%
2037-26-5
Toluene-138
98%
70-130%
460-00-4
4-Bromotluorobenzene
100%
70-130%
Method: SM 6200B
* = Outside of Control Limits.
31 of 40
FA5175 "•°•• `" •

Matrix Spike/Matrix Spike Duplicate Summary Page 1 of I
Job Number: FA5175
Account: BPAMSS Atlantic Richfield Company
Project: LJRSNCM:SIS 24163: 381 Knollwood St, Winston-Salem, NC
Sample
File ID DF
Analyzed
By
Prep Date
Prep Batch
Analytical Batch
FA5164-1IMS
A0180555.1) 50
06/06/13
AP
n/a
n/a
VA1267
FA5164-1IMSD
A0180556.D 50
06/06/13
AP
n/a
n/a
VA1267
FA5164-11
A0180551.13 50
06/06/13
AP
n/a
n/a
VA1267
The QC reported here applies to the following samples: Method: SM 6200B
FA5175-3, FA51754
FA5164-11
Spike
MS
MS
MSD
MSD
Limits
CAS No.
Compound
ugll Q
ugll
ugll
%
ug/l
%
RPD
Rec1RPD
71-43-2
Benzene
2060
500
2630
114
2580
104
2
70-130120
100-41-4
Ethylbenzene
496
500
1120
125
1110
123
1
70-130120
1634-04-4
Methyl Tert Butyl Ether
169
500
656
97
657
98
0
70-130120
108-88-3
Toluene
1340
500
1920
116
1890
110
2
70-130120
1330-20-7
Xylene (total)
1130
1500
2960
122
2940
121
1
70-130120
CAS No.
Surrogate Recoveries
MS
MSD
FA5164-11
Limits
1868-53-7
Dibromofluoromethane
101%
100%
98%
70-1301/16
17060-07-0
1.2-Diehloroethane-D4
98%
99%
97%
70-130%
2037-26-5
Toluene-D8
98%
97%
1008/0
70-130%
460-00-4
4-Bromofluorobenzene
94%
98%
95%
70-130%
a
ca
L
* = Outside of Control Limits.
■ 32 of 40
ACCIJT�ST.
FA5175 ••"",}OP1••

Matrix Spike/Matrix Spike Duplicate Summary Page 1 of I
Job Number: FA5175
:account: BPAIVISS Atlantic Richfield Company
Project: URSNCM:SIS 24163: 381 Knollwood St, Winston-Salem. NC
'ample
File ID DF
Analyzed
By
Prep Date
Prep Batch
Analytical Batcl
A5175-21VIS
A0180580.1) 50
06/07/13
JG
nla
nla
VA1268
A5175-2MSD
A0180581.1) 50
06/07/13
JG
nla
nla
VA1268
A5175-2 a
A0180582.1) 200
06/07/13
JG
nla
nla
VA1268
The QC reported here applies to the following samples:
Method:
SM 6200B
FA5175-2
FA5175-2
Spike
MS
MS
MSD
MSD
Limits
CAS No.
Compound
ugll Q
ug/l
ug/I
%
ug/l
% RPD
Rec/RPD
7143-2
Benzene
1410
500
1770
lab
1780
74 1
70-130120
100-41-4
Ethylbenaene
1380
500
1810
I14
1820
88 1
70-130120
108-88-3
Toluene
5930
500
5470
-92* b
5520
-82* b 1
70-130120
1330-20-7
Xylene (total)
6220
1500
7370
107
7400
79 0
70-130120
CAS No.
Surrogate Recoveries
NIS
MSD
FA5175-2
Limits
1868-53-7 D i brom of] uorom ethane
103%
101%
101%
70-130%
17060-07-0 1,2-Dichloroethane-D4
120%
119%
117%
70-130%
2037-26-5 Toluene-D8
96%
96%
98%
70-130%
460-00-4 4-Bromofluorobenzene
92%
94%
94%
70-130%
(a) Sample was not preserved to a pH < 2.
(b) Outside control limits due to high level in
sample relative to spike amount.
* = Outside of Control Limits.
■ 33 of 40
■ .qcc uTt=c�-
FA5175

Matrix Spike/Matrix Spike Duplicate Summary Page t of 1
Job Number: FA5175
Account: BPAMSS Atlantic Richfield Company
Project: URSNCM:SIS 24163: 381 1nollwood St. Winston-Salem, NC
Sample
Fife ID
DF
Analyzed
By
Prep Date
Prep Batch
Analytical Batch
FA5168-1MS
E024502.D
1
06/10/13
TD
nla
nla
VE838
FA5168-1MSD
E024503.D
1
06/10/13
TD
nla
nla
VE838
FA5168-1
E024501.D
1
06/10/13
TD
n/a
nla
VE838
"fhe QC reported here applies to the following samples: Method: SM 6200B
FA_517_5-21
FA5168-1
Spike
MS MS
MSD MSD Limits
CAS No.
Compound
ugll g
ugll
ugll %
ugll % RPD Ree/RPD
1634-04-4
Methyl Tert Butyl Ether
0.70
10
8.0 73
8.1 74 1 70-130120
CAS No.
Surrogate Recoveries
MS
MSD
FA5168-1
Limits
1868-53-7
❑ihromofluoromethane
99%
100%
97%
70-130%
17060-07-0
1,2-Dichloroethane-D4
101%
101%
98%
70-130%
2037-26-5
Toluene-D8
99%
100%
98%
70-130%
460-004
4-Bromofluorohenxene
99%
98%
102%
70-130%
c
sa
is
L
* = Outside of Control Limits.
IN 34 of 40
■ accu�t=_s�

Matrix Spike/Matrix Spike Duplicate Summary Page I of I
,lob Number: FA5175
Account: BPAMSS Atlantic Richfield Company
Project: LIRSNCM:SIS 24163: 381 Knollwood St, Winston-Salem, NC
'ample
File ID DF
Analyzed
By
Prep Date
Prep Batch
Analytical B$tel
A5207-SMS
A0180667.1) 2000
06/11/13
TD
nla
nla
VA1271
A5207-8MSD
A0180668.D 2000
06/11/13
TD
nla
nla
VA1271
A5207-8
A0180664.D 2000
06/11/13
TD
nla
nla
VA1271
The QC reported here applies to the following samples: Method: SM 6200B
FA5175-1, FA5175-5
FA5207-8
Spike
MS
MS
MSD
MSD
Limits
CAS No.
Compound
ugll Q
ugli
ugll
%
ugll
%
RPD
Rec/RPD
71-43-2
Benzene
2790
20000
19400
83
19300
83
1
70-130120
100414
Ethylbenzene
ND
20000
16300
82
16200
81
1
70-130120
1634-04-4
Methyl Ter[ Butyl Ether
55200
20000
76100
105
77400
111
2
70-130120
108-88-3
Toluene
ND
20000
16200
81
16100
81
1
70-130120
1330-20-7
Xylene(total)
ND
60000
52200
87
5I600
86
3
70-130120
CAS No.
Surrogate Recoveries
MS
MSD
FA5207-8
Limits
1868-53-7
❑ibromofluoromethane
98%
99%
96%
70-1300Ie
17060-07-0
1,2-Dichloroethane-D4
97%
97%
95%
70-130%
2037-26-5
Toluene-D8
99%
99%
98%
70-130%
460-00-4
4-Bromofluorobenzene
99%
100%
100%
70-130%
C
ew
* = Outside of Control Limits.
IN 35 of 40
U.o.CcuY't=E3T
FA5175 •,�"•"•"•

Section 7
■ Southeast
■ ,o,ccuTEs-r
General Chemistry
QC Data Summaries
Includes the following where applicable:
• Method Blank and Blank Spike Summaries
Duplicate Summaries
• Matrix Spike Summaries
hr
36 of 40
r"'COUTEST.
PAS176 ••�""rn. r.

METHOD BLANK AND SPIKE RESULTS SUMMARY
GENERAL CHEMISTRY
Login Number: FA5175
Account: BPAMSS - Atlantic Richfield Company
Project: UPSNCM:5/S 24163: 301 Kaollwood St, Winston-Salem, NC
MB Spike BSP BSP OC
Analyte Batch Ia RL Result Units Amount Result $Recov Limits
Alkalinity, Total as CaCO3 GN56146 5.0 1.9 mg/1 250 256 102.0 90-1134
Alkalinity, Total as CaCO3 GN56217 25 4,2 Mg/1 250 274 109..6 90-1134
Sulfate GP218861GN56319 2.0 0.0 mg/1 50 48.4 96.8 90-1101
Associated Samples:
Batch GN56146: FA5175-1, FA5175-4
Batch GNS6217: FA5175-2, FA5175-3, FA5175-5
Batch GP21886: FA5175-1, FA5175-2, FA5175-3, FA5175-4, FA5175-5
(*1 outside of 4C limits
Page 1
a� 37 of 40
AGCiJTEST.
FAS176 ......

DUPLICATE RESULTS SUMMARY
GENERAL CHEMISTRY
Login Number: PA5175
Account: BPAMSS - Atlantic Richfield Company
Project: URSNCM:SIS 24163' 381 Knollwood St, Winston-Salem, NC
Qc ❑riginal DUP QC
Analyte Batch ID Sample [hits Result Result RPD Limits
Alkalinity, Total as CaCD3 GN56146 FA5290-3 mgll
Alkalinity, Total as CaCO3 GN56211 PA5175-2 mg/1
Associated Samples:
Batch GN56146. FAS175-1, FA5175-4
Batch GN56217; FA5175-2, FA5175-3, FA5175-5
(1) outside of 4C limits
(a) RED acceptable due to low duplicate and sample concentrations.
Page 1
1S.9 13.9 29.919} 0-20%
2750 275❑ 0.0 0-20R
38 at 40
ACCUTEST.
FAS175 ..........v.

MATRIX SPIKE RESULTS SUMMARY
GENERAL CHEMISTRY
Login Number: FA5175
Account: BPAMSS - Atlantic Richfield Company
Project: URSNCM:S/S 24163: 381 Knollwood St, Winston-Salem, NC
Oc Original Spike MS QC
Analyte Batch I❑ Sample Units Result Amount Result %Rec Limits
Alkalinity, Total as CaCO3 GN56146 FA5290-3 mg/1
Alkalinity, Total as CaCO3 GN56217 FA5175-2 mgll
sulfate GP21B861GN56319 FA5159-7 mg/1
Associated Samples:
Batch GN56146: FA5175-1, FA5175-4
Batch GN56217: FA5175-2, FA5175-3, FA5175-5
Batch GP21866: FA5175-1, FA5175-2, FA5175-3, FA5175-4, FA5175-5
0) Outside of QC limits
(NJ Matrix Spike Rec. outside of QC limits
(al Spike recovery indicates possible matrix interference.
Page 1
18.8 250 264 56.1 90-113%
2750 250 3050 IOLP '(A) 90-113t
21.6 50 72.9 10I.S. 90-110%
V
W
ei 39 of 40
.4CCU -r
FA6775

MATRIX SPIKE DUPLICATE RESULTS SUMMARY
GENERAL CHEMISTRY
Login Number: PA5175
Account: BPAMSS - Atlantic Richfield Company
Project: URSNCM:S/S 23163: 381 Knollwood St, Winston-Salem, NC
OC original Spike MSA QC
Aaalyte Batch In Sample Units Result Amount Result RP❑ Limit
Sulfate GP21886/GN56319 FA5159-'1 mq/1 21.6 50 72.4 0.7 20%
Associated Samples:
Batch GP21986: FA5175-1, FA5175-2, FA5175-3, FA5I75-4, PA5175-5
(1) Outside of QC limits
(N) Matrix Spike Rec. outside of OC limits
Page 1
10 40 of Oil
ACC-- UTE-ElaT.
PA5115 `...—" — —

APPENDIX G
Historical Groundwater Field Parameter Data

Appendix G
Historical Groundwater Field Parameter Data
Former BP Service Station No. 24163
381 Knollwood Street
Winston-Salem, Forsyth County, North Carolina
Well
Date
Sodium
Persulfate
PH
ORP
Temp.
Specific
Cond.
DO
g/L
S.U.
m V
°C
MS/cm
mg1L
N1 N -03
3123106
--
6.97
-44
19.1
0-696
0.48
518107
--
7.00
-190.8
20.30
0.388
1.00
514/08
--
6.18
--
19.0
0.668
--
5128109
-
7.20
--
19.7
0.452
--
5127110
-
6.84
36.3
19.09
0.390
2.1
10/31 / 11
--
6.84
-72
22.04
1.171
3.2
5/22/12
Uzi
7.13
-5.4
20.32
0.708
4.6
6/14/12
ND
6.84
21.7
20.53
0.854
0-5
719112
ND
7.08
-7
1 21.42
0.753
3.6
8/14/12
ND
7.02
-5I.9
72.43
0.552
2.7
9/19/12
0.071
7.00
-125.9
22.06
0.854
0.9
1215112
--
6.89
-66.6
20.65
0.774
1.3
2/26/12
--
6.61
-72.5
16.30
0.573
1.3
5/31/13
--
6.82
-10.6
19.81
0.823
3.8
MW-Q5
3/23/06
--
5.67
5.0
18.44
0.144
0.77
5/8/07
--
5.15
143.2
20.60
0.076
0.65
5/14/08
--
3.45
--
19.5
0.104
--
5128109
--
E l l
--
19.7
0.328
-
MW-5R
5127I10
--
2.624
129.1
18.95
0.193
4-1
10/31/11
--
4.89
185.6
22.00
0.123
V7
5122/12
ND
4,19
153.9
20.04
0.078
1.1
6/14/12
ND
13.08
8.9
23.57
37.82
0.5
719112
ND
13.10
39.9
22.42
35.02
7.2
9/14/12
0.071
13.38
144.1
23.36
34.91
0.3
9/19/12
N❑
13.36
39.9
23.12
46.21
0.2
12/5/12
--
12,39
1.2
22.79
27.87
0.6
2i26/ 12
--
1 1.66
-44.7
15.14
16.44
1.2
5/31/13
--
10.76
-60.4
20.03
11.25
0.7
MW-06
3/23/06
--
6.18
217
18.19
0.656
0.3
518107
--
6.59
67.7
19.22
0.693
2.01
5/14/08
--
5.40
--
18.2
0.382
-
5128109
--
4.51
--
19.3
0.325
--
5127110
--
5.97
88.4
17.91
0.311
3.07
10/3VI1
--
13.772
-184.7
20.71
49.87
1.25
MW-061
3/23/06
-
6.08
32
18.3
0.277
0.25
5/8/07
-
6.67
-123.5
19.66
0.169
0.40
5/14/08
--
6.32
-
18.3
0.159
--
5128r09
--
6.43
--
19.4
0.132
--
5127110
--
5.35
1
18.57
0.060
0.67
10/31/11
-
6.89
-32.5 1
18.85
0.18
].40
P tklPVti..Kca K%7+x?, cx w-e 3RI Kwlh"..d •Sn fi h. bjmu i train - L.wtm I7dw k A n M# 2bi 1 L:W 4-:WdQu lcrn. .W (;-VwJu I 1 of 3

Appendix G
Historical Groundwater Field Parameter Data
Former BP Service Station No. 24163
381 Knollwood Street
Winston-Salem, Forsyth County, North Carolina
NN ell
Date
Sodium
Persuifate
pH
ORP
Temp.
Specific
Cond.
IM
g/L
S.U.
InV
°C
m51cm
mg/L
MW-08
3/23/06
--
6.95
-150
17.93
0.601
0.14
518107
--
7.05
-118.0
19.88
0.556
0.36
5/14/08
--
5.91
-
19.3
0.445
--
5128109
--
6.49
-
19.5
0.469
--
11�l-8R
5127110
--
4.03
105.1
18.38
0.090
2.55
10/31/11
--
4.80
198.1
21.88
0.250
1.9
5/22/12
ND
4.59
250.4
19.80
0.158
0.8
6/14112
32.18
13.32
17.2
22.80
194.5
17.163
719112
8.4
13.38
116.7
21.56
68.5
32.853
8/14/12
3.64
13.09
171
21.75
20.15
42.283
9/19/12
0.665
12.74
123.9
21.92
19.1
13.973
12151I2
ND
11.34
25.4
22.10
6.993
2.1
2/26/12
--
10A2
-59.2
15.35
2.298
0.7
5/31/13
--
10.18
-25.1
19.66
2.322
0.6
MW-14
3/23/06
--
4.62
257
18.99
0.081
0.39
518107
--
4.46
196.8
19.09
0.060
0.95
5/14/08
--
4.49
--
18.8
0.079
-
5/28/09
--
4.75
--
19.9
0.077
--
5127110
--
1.564
253.3
18.82
0.169
2.97
10/31/11
--
4.59
260.9
21.31
0.157
2.84
15
3/23/06
--
4.48
294
17.85
0.048
0.06
518107
--
4.31
-134.4
19.34
0.042
0.32
5/14/08
--
3.40
--
18.3
0.042
--
5/28/09
--
--
--
--
--
--
5127110
--
3.46
119.5
17.03
0.130
2.99
10/31/11
--
4.44
254.1
19.32
0.061
2.80
MW-16
3/23/06
--
4.33
529
18.07
--
6.81
518107
--
--
--
--
--
--
5/14/08
--
3.83
--
17.7
0.736
-
5128109--
5127110
--
3.97
99.9
17.32
0.687
1.60
10/31/11
--
4.44
244.9
19.62
0.706
3.20
MW-17
3/23/06
--
4.21
488
18.86
-
4.63
518107
-
6.46
-14.4
20.06
0.392
1.15
5/14/08
--
4.98
--
20.1
0.391
--
5128109
-
6,11
--
19.6
0.310
--
5127110
--
5.25
57.9
18.43
0.287
0.57
1013I111
--
6.31
-90.5
20.80
0.556
0.66
I''lwulrppe %Ncudh ±. CK. +ASS. =NI Kmku A s"" _. n rleLL w.%s I rx n • 4r QRI­.M_A 22 M.l :uli f W fi_ Qh .tr 9"IT04-1T.Nn. APP.W. . ad 64ply 3 „ I • 2 of 3

Appendix G
Historical Groundwater Field Parameter Data
Former BP Service Station No. 24163
381 Knollwood Street
Winston-Salem, Forsyth County, North Carolina
Well
Date
Sodium
persulfate
pH
ORP
Temp.
Specific
Cond.
DO
g/L
S.U.
mV
°C
mslcm
mg/L
MW-18
10/31 / 11
--
6.86
12.9
22.47
0.117
2.4
5/22/12
ND
6.20
30.7
21.43
0.001
3.0
6/14/12
ND
1112
5
21.06
54.11
0.3
719112
ND
11.92
40.4
21.29
10.05
1.2
81I4112
ND
10.88
-35
22.59
2.533
0.2
9/19/12
ND
11.09
-35
22.59
3.301
0.2
1215112
--
6.91
-68.1
22.85
0.859
0.7
2/26/12
--
6.11
-84.2
14.86
0.589
1.0
5/31/13
--
6.42
-117.2
19.62
1.036
1.0
MW-19
10/31/11
--
5.37
190
21.81
0.193
3.9
5/22/12
ND
4.62
131.7
19.89
0.103
0.9
6/14112
6.615
13.30
-I5.8
21.57
117.8
1 22.383
719112
ND
12.75
46.9
21.91
13.4
25.793
8/14/12
0.071
12.50
162
22.57
10.21
25.463
9/19/12
0.071
11.71
157
22.47
3.424
12.93
1215112
--
9.99
20.1
23.03
1.537
5.2
2126/12
--
8,14
-41.9
16.85
1.511
0.8
5131113
--
7.50
192.5
19.86
5.885
2,7
Notes:
1.) Sodium persulfate test kits results of 0.07 g/L are treated as "non -detections", as they are within the
margin -of -error for detection.
2.) Values are not consistant with historic values and may be the result of instrument malfunction.
3.) Dissolved oxygen results above saturation (approximately 9.1 mg/L at 20 °C) are considered to
represent measurement error and are not considered representative of actual dissolved oxygen
concentration in groundwater. Error in measurements for the sensor used, a steady-state polarographic
sensor. can be caused membrane fouling and interference gases, among other causes (YSI, 2009). The
likelihood of measurement error from these sources may have been heightened by the injection.
4.) Elevated pH is the result of the October 2011 sodium hydroxide pilot test injection adjacent to MW-6.
Subsequent elevated pH measurements in MW-5R, MW-8R. MW-18, and MW-19 are associated with
June 2012 and June 2013 sodium persulfate and sodium hydroxide injections.
- activated sodium persulfate injections were performed at the site from June 4, 2012, to June 9, 2012. and
from June 3, 2013, to June 6, 2013.
ORP - oxidation reduction potential
DO - dissolved oxygen
g/L - grams per liter
s.u. - standard units
mV - millivolts
°C - degrees Celsius
mSlcm - milliSiemens per centimeter
mg/L - milligrams per liter
%-" = Not Measured
ND - Not Detected
Temp. - temperature
Specific Cond. - specific conductance
V'"N.. cull M410, CK. W.S. 58l K_flW_d 5v .c 5 0 tarJry W.%5 I hn1+- 1N . WN.W.412 Mn icily Gw F,~M. Rery,nRatile.)T.K., Appaalu+ . u 1 G.rl� IW. I � 3 of 3

APPENDIX H
ASP Injection Performance Monitoring
Parameter Time -Trend Graphs

Benzene Concentrations over Time
9000
M W-3 (contra!)
Injection Event
MW-SR
8000
MW-8R
7000
MW-18
MW-19
Ob
6000
-GCL
_
G
5000
m
u
C
U
4000
QJ
N
3000
cc
2000
1000
0
Date
P OpWruja3Al+C,4A 163, C-K. WS. is KFmUwnad Sueeft5x DelnemMeslS.I Drag - Imenm D6ncrabksu 22 Wv 2013 OW Eml pwgerly Rgmrff-bWT ble, RppaWiom ud Gnphr ldr I

Sodium
Persulfate Concentrations over Time
44
MW-3 (control)
Injection Event
MW-5R
35
MW-8R
30
�
- MW-18
,ayo
C
fl
-
MW-19
L
25
G]
u
C
a
LV
24
m
v
7
H
L
15
2
0
a
1❑
5
a
oti� otiti aoti�' aZ� o�� o�� o
oooo'ar'� o�ativti� ❑ao'�oti�'
Date
P OPkflf WC 4161_ CX. W-S. 341 KWIi Vad Smd%5 0 Zh lw rabkM5 I Dra15 • InMm D*%vrAA aN 22 Mau 2011 GW BvM Qu =Iy RepprOTaklcsMba u. Appcndrors, and Graphs 3aly 13

pH over Time
15.0
MW-3 (control)
Injection Event
14.0
M W -5 R
-MW-8R
12.0
MW-18
10.0
M W -19
7
8.0
M
6.0
4.0
2.0
0.0
aye O,yL OAY� O.,rb QAyY O.y1 O.yL O,yl. Oy'L O,yi. oy'1. Oy`V 4,�'1 Ory`V q��] p�7J O,y� O.y}i Oyn3
�,��'~ '',�~'� �,113 �,��'� �'�o,� 1'��'� s1�y,� �,�Q,rLyO,"y,'1.O,r1 �,'1. 'ry
Date
P OMmp:LMCV4 161_ CK. WS. 131 KndloaW Slrwu 0 DdwaabkO.I Drag - Inlcnm Ddncrabksw 22 W 2013 Ow @,sn QmOrdy Rtpon%T-WOTsbks. Appc M.M and Cnaplopl, I

Carbon Dioxide over Time
25000
Injection Event
MW-3 (control)
MW-5R
M W -8 R
20000
MW-18
MW-19
to
15000
a�
'x
O
O
G
10000
M
V
5000
0
�,y'y �.y'y oy�. a,�rt• qy''l• o�ti ��ti otiti oy'L O.y't. oy'1. O,k''L O.y'1. oti'1�,y'L Oy''+� oy'3 oy'� oy'� oy's
Date
P V8¢RpTuYsllr'C12JkF3 CK. WS- MI Hndle vd Slrcctl5 is ➢chsrnbinl5 I DWI • Imcnm Dclllwabk+'J 12 Mry 200 GW Esem Q-rwly kcpan'•Tablcs'•Ta61n..4pp-ndw and Graphs ry1r I }

Sulfate over Time
FF.IIIIN
16000
14000
12000
3
t►f 8000
6000
4000
2000
o
�,��1�. �,��'ry 7',��,�• �,�0,'L
h'�1,'L rO'�O,'L 1'��,'y
�,�,y,'L �,�o,'y'��,��''1•
�13,y,'L�,~$,'L
�1�,y''L �'��,'� �1�,y''L
'��'��,�. �,�0'�.'��,��1ry
�,�o,'L'��,��,'L
Date
MW-3 (control)
MW-5R
MW-8R
—MW-18
MW-19
pr MVmpwt vaCud I67. CK. W-5, NO AnWl—d Swami 0 bdt—bkasa l Dolt - Im m GeImw*bks4.2x May 20D GW E%cV Qnancrlr RcWT%bk57T*k& Ammndc , and Graphs ply 13

Specific Conductivity over Time
250
MW-3 (control)
Injection Event
MW-5R
200
MW-8R
-MW-18
_
MW-19
150
A
V
u
3
G
Q
V
100
u
'u
a�
Q
Ln
50
0
Date
P LBPWfalags><'1�1ia 163. Cr, W-s. 361 fLffln. od Suemig Wnasbfi:55.1 FhoA -1w nm 31eh.w bk: 5a 22 Kin 20" GW Emm Quarlu# ReportUahleff*ks. Appwkl +mM Graphs Jdy 11