NCG510235_Regional Office Historical File Pre 2018 (2)

state of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
March 29, 1995
Mr. Woodson McFarlin
TOC Retail, Inc.
2467 Windy Hill Road
Marietta, Georgia 30067
SICFiriA
ED 111-111N1171
ENVIRONMENT. HTALTF,
& NATURAL Pi -11JRCES
MAR 31 m5
DIVISION Of ENVIRONMENTAL ';'MI ELITE
MOORESVILLE RUED R N
Subject: General Permit NCG510000
Cert. of Coverage NCG510235
TOC Store No. 503-31
Catawba County
Dear Mr. McFarlin:
In accordance with your application for an NPDES discharge permit received on Novermber 10,
1994 by the Division, we are herewith forwarding the subject Certificate of Coverage under the state-
NPDES general permit for a groundwater treatment system and one set of final approved plans and
specifications. Authorization is hereby granted for the construction and operation of a groundwater
treatment system consisting of an oil/water separator, air stripper, and GAC filter with discharge of treated
wastewater into an unnamed tributary to Geitner Branch. This Certificate of Coverage is issued pursuant
to the requirements of North Carolina and the US Environmental Protection Agency Memorandum of
Agreement dated December 6, 1983 and as subsequently amended.
If any parts, measurement frequencies or sampling requirements contained in this general permit
are unacceptable to you, you have the right to submit an individual permit application and letter requesting
coverage under an individual permit. Unless such demand is made, this decision shall be final and
binding. Please take notice this permit is not transferable. Part II, E.4. addresses the requirements to be
followed in case of change of ownership or control of this discharge.
The Authorization to Construct is issued in accordance with Part III, Paragraph 2 of NPDES
_:Permit No. NCG510000, and shall be subject to revocation unless the wastewater treatment facilities are
constructed in accordance with the conditions and limitations specified in Permit No. NCG510000.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Pennittee shall take immediate corrective action, including those as may be required by this
Division, such as the construction of additional or replacement wastewater treatment or disposal facilities.
The Mooresville Regional Office, telephone number 704/663-1699 shall be notified at least forty-
eight (48) hours in advance of operation of the installed facilities so that an in -place inspection can be
made. Such notification to the regional supervisor shall be made during the normal office hours from 8:00
a.m. until 5:00 p.m. on Monday through Friday, excluding State Holidays.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Acton Employer 50% recycled/ 10% post -consumer paper

permit No. NCG5100()0
Authorization to Construct
TOC Retail, Inc.
March 29, 1995
Page 2
Upon completion of construction and prior to operation of this permitted facility, a certification
must be received from a professional engineer certifying that the permitted facility has been installed in
accordance with the NPDES Permit, the Certificate of Coverage, this Authorization to Construct and the
approved plans and specifications. Mail the Certification to the Permits and Engineering Unit, P.O. Box
29535, Raleigh, NC 27626-0535.
A copy of the approved plans and specifications shall be maintained on file by the Pet
life of the facility.
Failure to abide by the requirements contained in this Authorization to Construct may subject the
Pertnittee to an enforcement action by the Division of Environmental Management in accordance with
North Carolina General Statute 143-215.6A to 143-215.6C.
e for the
The issuance of this permit does not preclude the Permittee from complying with any and all
statutes, rules, regulations, or ordinances which may be required by the Division of Environmental
Management or permits required by the Division of Land Resources, the Coastal Area Management. Act or
any Federal or Local other governmental permit that may be required.
If you have any questions or need additional information, please contact Jay Lucas, P.E., at
telephone number 919/733-5083 extension 502.
Sincerely,
Gr ginai Signed By
David A Goodrich
A. Preston Howard, Jr., P.E.
cc: Central Files
Mooresville Regional Office, Water Quality
Mr. Roosevelt Childress, EPA
Permits and Engineering Unit
Facilities Assessment Unit.
Catawba County Health Department
Mr. Bryan Gee, P.E.
Front Royal Environmental Services
P. O. Box 4350
Cary, NC 27519-4350

permit No. NCG510000
Authorization to Construct
TOC Retail, Inc.
March 29, 1995
Page 3
Engineer's Certification
1, , as a duly registered Professional Engineer in the State of North
Carolina, having been authorized to observe (periodically, weekly, full time) the construction of the
project, for the
Project Name Location
Permittee hereby state that, to the best of my abilities, due care and diligence was used in the observation
of the construction such that the construction was observed to be built within substantial compliance and
intent of the approved plans and specifications.
Signature Registration No.
Date

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
GENERAL PERMIT NO. NCG510000
CERTIFICATZ OF COVERAGE NO. NCG510235
TO DISCHARGE PETROLEUM CONTAMINATED GROUNDWATER AND SIMILAR WASTEWATERS
UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended,
TOC Retail, Inc.
is hereby authorized to construct and operate or continue operation of a groundwater treatment system consisting of
an oil/water separator, an air stripping system and carbon filtration for petroleum contaminated groundwater or
similar waste streams with the discharge of treated wastewater from a facility located at
Store No. 503-31
910 First Avenue
Hickory
Catawba County
to receiving waters designated as an unnamed tributary to Geitner Branch in the Catawba River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth in Parts I, II, III
and IV of General Permit No. NCG5I0000 as attached.
This certificate of coverage shall become effective March 29,1995
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day March 29,1995
arigina4.Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Environmental Management
By Authority of the Environmental Management Commission

UNITED STATES
DEPARTMENT OF THE INTERIOR
`s. GEOLOGICAL SURVEY
LENOIR 15 MI.
GRANITE FALLS 4.5 MI.
169 BETHLEHEM 6 MI. 20

State of North Carolina
Department of Environment,.
Health and Natural Resources
Division of Environmental Managemen
James B. Hunt, Jr., Governor
Jonathan 8. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. Woodson McFarlin
TOC Retail, Inc.
2467 Windy Hill. Road
Marietta, GA 30067
mber 29, 1994
e Nz=1Li.`,x\°r..::a
DIVISION Cif r
Subject: Application No. NCG510235
Additional Information Request
TOC Store No. 503-31
Groundwater Treatment System
Catawba County
The Permits and. Engineering Unit has completed a preliminary engineering review of the subject
application.
The following must be submitted before the application can be considered complete:
1) Provide an analysis of all groundwater contaminants listed in 4. D. of the Notice of Intent.
Analyses for lead, naphthalene, and phenol were not included in the submittal.
2) Provide calculations of contaminant concentrations entering the treatment system.
3) Provide the contaminant removal efficiencies of the air stripper.
Refer to the subject permit application number when providing the requested information. Please submit
three copies of all information to my attention at the address below. Also, please note that failure to
provide this additional information on or before January 31, 1995 will subject your application to being
returned as incomplete, in accordance with 15A NCAC 2H .0208 (e). The Division of Environmental
Management will initiate the review process upon receipt of the above requested information. The receipt
of the above information does not preclude this Division from requesting additional information at a future
date.
If you have any questions on this matter, please call me at [phone].
Sincerely,
1"ay B. Lucas
Environmental Engineer
Mooresville Regional Office, Water Quality
Front Royal Environmental Services, Inc., Mr. Bryan C. Gee, P.E.
Project File
P.0, Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX g1g-733-9919
An Equal Opportunity Affirmative Action Employer
50% recycled/ 10% post -consumer paper

I
SOC PRIORITY PROJECT: Yes No X
To: Permits and Engineering. Unit
Water Quality Section
Attention: Jay Lucas
Date: December 14, 1994
NPDES STAFF REPORT AND RECOMMENDATION
County: Catawba
MRO No.: 94-232
Permit No. NCG510235
PART I - GENERAL INFORMATION
1. Facility and Address: TOC Retail, Inc.
2467 Windy Hill Road
Marietta, GA 30067
2. Date of Investigation: 12-01-94
3. Report Prepared By: Samar Bou-Ghazale, Env. Engineer I
4. Persons Contacted and Telephone Number: Ms. Stephanie Freese,
Staff Engineer with Front Royal; tel# [phone]
5. Directions to Site: From the intersection of Highway 1-40 and
Hwy 321 in Hickory, travel north on Hwy 321 approximately 0.6
mile to Hwy 64/70. Travel east on Hwy 64/70 approximately 800
feet to 9th Street. Travel on 9th street approximately 0.6
mile to the intersection with 1st Avenue SW. The site is
located in the north west quadrant of the intersection.
6. Discharge Point(s). List for all discharge points:
Latitude: 35° 43' 50" Longitude: 81° 18' 10"
Attach a U.S.G.S. map extract and indicate treatment facility
site and discharge point on map.
USGS Quad No.: E 13 NE USGS Quad Name: Hickory, N.C.
7. Site size and expansion are consistent with application?
Yes X No If No, explain:
8. Topography (relationship to flood plain included): Sloping at
the rate of 2 to 12%. The site is not located in a flood
plain.

I
Page Two
9. Location of nearest dwelling: Several Houses are located
within 100 feet of the site.
10. Receiving stream or affected surface waters: Unnamed
Tributary to Geitner Branch.
a. Classification: C
b. River Basin and Subbasin No.: Catawba River Basin;
030835.
c. Describe receiving stream features and pertinent
downstream uses: Discharge will take place into an
unnamed tributary to Geitner Branch on the south side of
the site. This stream flows through a residential area
prior to entering the Henry Fork River.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 0.005 MGD (Ultimate
Design Capacity)
b. What is the current permitted capacity of the wastewater
treatment facility? N/A.
c. Actual treatment capacity of the current facility
(current design capacity)? N/A.
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years: N/A.
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: N/A.
f. Please provide a description of proposed wastewater
treatment facilities: The proposed groundwater treatment
system will consist of monitoring wells, recovery wells,
oil/water separator, air sparging, and granular activated
carbon adsorption.
g. Possible toxic impacts to surface waters: effluent from
similar facilities has failed toxicity testing.
h. Pretreatment Program (POTWs only): N/A.
2. Residuals handling and utilization/disposal scheme: Generation
of residuals is not expected.
NPDES Permit Staff Report
Version 10/92
Page 2

I
Page Three
3. Treatment plant classification (attach completed rating
sheet): Proposed, no rating given.
4. SIC Code(s): 5541
Primary: 66
Main Treatment Unit Code: 56000
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved (municipals only)?
N/A.
2. Special monitoring or limitations (including toxicity)
requests: Toxicity may need to be limited.
3. Important SOC, JOC or Compliance Schedule dates: (please
indicate) N/A.
4. Alternative Analysis Evaluation: Has the facility evaluated
all of the non -discharge options available. Please provide
regional perspective for each option evaluated.
Spray irrigation: The use of spray irrigation was evaluated
and found not to be a viable alternative due to limited space.
Connection to regional Sewer System: According to the
applicant, the City of Hickoty will not accept such discharges
until sometime in 1996.
Discharge to an infiltration gallery: The use of an
infiltration gallery was evaluated and found not to be a
viable alternative given the presence of bedrock at a shallow
depth.
5. Air Quality and/or Groundwater concerns or hazardous waste
utilized at this facility that may impact water quality, air
quality or groundwater? Contaminated groundwater already
exists at the site. No hazardous waste will be generated. An
Air Quality Permit for this facility is not required. however,
registration with the Air Quality Section is required.
NPDES Permit Staff Report
Version 10/92
Page 3

I
PART IV - EVALUATION AND RECOMMENDATIONS
TOC Retail, Inc., is requesting an NPDES General Permit for
the. discharge of treated groundwater resulting from a leaking
underground storage tank.
Field investigation revealed that prior to discharging
into Geitner Branch, the treated water will be pumped to a storm
sewer located approximately 200 feet north of the site. An
easement agreement is required unless the land between the site and
the storm drain belongs to TOC Retails, Inc.
The effluent from similar facilities has been known to fail
toxicity testing.
It is recommended that the NPDES Permit be issued once the
above mentioned concerns regarding an easement agreement and
toxicity have been addressed.
Sign=tune ort Preparer
/2-/4- 94
Date
:e9 IRS /Z/¢
Water Quality R Tonal Supervisor Date
NPDES Permit Staff Report
Version 10/92
Page 4

UNITED STATES
DEPARTMENT OF THE INTERIOR
GEOLOGICAL SURVEY
81'22'30" LENOIR 15 MI.
GRANITE FALLS 4.5 MI.
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State of North Oarolina
Department of nviironnent,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
November 14, 1994
Woodson McFarlin
TOC Retail, Inc.
2467 Windy Hill Road
Marietta, GA 30067
H
ONMEN
ATU ?A1
aY 17 1494
lyi
Subject: Application No. NCG510235
TOC Store No. 503-31
Catawba County
Dear Mr. McFarlin:
TAt MANAGEMENT
NA OFFtc
The Division's Permits and Engineering Unit acknowledges receipt of your permit
application and supporting materials received on November 10, 1994. I am conducting a
detailed engineering review of this application which has been assigned the number shown
above. Please refer to this number when making inquiries on this project .
Be aware that the Division's regional office, copied below, must provide
recommendations from the Regional Supervisor for this project prior to final action by the
Division.
I am, by copy of this letter, requesting that our Regional Office Supervisor prepare a
staff report and recommendations regarding this discharge. If you have any questions
regarding this application, please contact me at 919/733-5083.
Sincerely,
ay B. Lucas
Environmental Engineer
Mooresville Regional Office, Water Quality Section
Permit File
P,0. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal opportunity Affirmative Action Employer 50% recyc di 1 Q% post -consumer paper

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WISIU.14 CEL F1 g S
State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
James G. Martin, Governor A. Preston Howard, Jr., P.E.
William W. Cobey, Jr., Secretary Acting Director
NOTICE OF INTENT
National Pollutant Discharge EIimination System
Application for Coverage under General Permit NCG510000; Groundwater remediation projects
designed to treat petroleum contaminated groundwater.
1. Name, Address , location, and telephone number of facility requesting Permit.
A. Official Name:
B. Mailing Address:
(1)Street Address;
(2)City;
(3)State;
(4)Zip;
(5)County;
C. Location. (Attach map
(1)Street Address;
(2)City;
(3)State;
(4)County;
Mr. Woodson McFarlin
TOC Retail, Inc.
2467 Windy Hill Rd.
Marietta
Georgia
30067
delineating general facility location)
TOC Store No. 503-31 910 First Avenue
Hickory
North Carolina
Catawba
D. Telephone Number; (404 ) 955 - 0627
2. FaciIity Contact:
A. Name;
B. Title;
C. Company Name;
D. Phone Number;
Mr. Woodson McFarlin
Environmental Supervisor
TOC Retail,- Inc.
( 404 ,) 955-06.27
3. AppIication type (check appropriate selection):
A. New or Proposed;
B. Existing; If previously permitted, provide permit number
• and issue date
C. Modification;
(Describe the nature of the modification):
4. Description of discharge
A. Please state the number of separate discharge points.
'1,D1; 2,11; 3,[1; 4,[); �[l•
r • '
Page 1

B. Please describe the amount of wastewater being discharged per each separate discharge point:
1:5 , 00_t allons per day (gpd) 2: (gpd) 3: - (gpd) 4: (gpd)
C. Check the duration and frequency of.the discharge, per each separate discharge paint:
1. Continuous X
2 InterrnittEnt desc e):
3. Seasonal (check month(s) the discharge occurs): January [ 1; February (1; March [ 1; April [ 1,
May [ ];June f 1; July f 1; August (];September 1 ],C tober[ ]: November [ 1; December [ ].
4. How many days per week is there a discharge?(check the days the discharge occurs)
Monday [ ], Tuesday (1, Wednesday (1, Thursday f ],Friday (1, Saturday (1, Sunday 1 J.
5. How much of the volume discharged is treated? (state in percent) 1 eo %
D. Describe the type of wastewater being discharged per separate discharge point. Specify what is
being removed and products recovered. This includes a listing of any chemicals found in
detectable amounts with the maximum observed concentration reported. The summary of
analytical results containing this maximum value should also be submitted (i.e. the listing, not
the graphical scan). The most recent sample must be no older than one year previous to the date
of this application. The following volatile organic compounds should be included along with
any suspected fuel additive;
1. Benzene*;
2. Toluene";
3. Ethylbenzene*;
4. Xylene*;
5. Lead;
6. Methyl tert-butylether (MTBE);
7. Dibromoethane (EDB);
8. 1,2-dichloroethane;
9. Isopropyl ether;
10. Naphthalene;
11. Phenol;
*(An EPA approved method capable of detection Ievels to 1 ppb should be used to detect these
compounds).
E. Please check the appropriate type of treatment being used to treat the groundwater;
1. Oil/Water Separator; X
2. Air Stripper;
3: Diffused Aeration; X
4. Activated Carbon Absorption; X
5. Other(specify);
6. Separately, please describe in detail(size, volume,capacity, design flow through treatment,
etc.) each type of treatment that was checked in 1 through 5. Include, if any, the
manufacturer's information on each type of treatment. Also provide the removal effidency of
each compound detected for the project, if known. Give design specifics (Le. design volume of
each unit, materials used in air stripper, etc.). Existing treatment facilities should be
described in detail and design criteria or operational data should be provided(including
calculations) to ensure that the facility can comply with requirements of the General Permit.
Please include model and calculations used in determining the design requirements for the air
stripper.
7. What are the well sizes and how many exist
8. P1Pace state the pump sizes and their location in relation to the treatment used in part 2.E.
9. Please explain what fail-safe measures, such as audible and visual alarms or automatic
shutoff systems, are provided to ensure no system failures.
10. Is there an access to the effluent for sampling?( either an open pipe or a valve to obtain a
sample)
Page 2

NOTE: Construction of any wastewater treatment facilities require submission of three (3) sets of plans
and specifications along with their application. Design of treatment facilities must comply
with requirement 15A NCAC 2H .0138. If construction applies to the discharge, include the
three sets of plans and specifications with the application.
5. What is the nature of the business applying for this permit.
Geitner Branch
6. Narne of receiving water or waters; and henry Fork ' Classification:
(Attach a USGS topographical map with all discharge point(s) clearly marked)
7. Is the discharge directly to the receiving water?(Y,N) No, _Discharge to Storm Sewer System
If no, state specifically the discharge point. Mark clearly the pathway to the potential receiving
waters on the site map. (This includes tracing the pathway of the storm sewer to its discharge
point, if a storm sewer is the only viable means of discharge.)
8. Please address possible non -discharge alternatives for the following options:
A. Connection to a Regional Sewer Collection System;
B. Subsurface Disposal;
C. Spray Irrigation;
9. I certify that I am familiar with the information contained in the application and that to the best of
my knowledge and belief such information is true, complete, and accurate.
Printed Name of' PesanSig"r Mr. Woodson McFarlin
Tine
Date Application Signed
Signature of Applicant
Environmental Supervisor. TOC Retail, Inc.
NORTH CAROLINA GENERAL STATUTE 143 215,6 B (i) PROVIDES THAT:
Any person who knowingly makes any false statement, representation, or certification in any
application, record, report, plan or other document filed or required to be maintained under Article 21 or
regulations of the Environmental Management Commission implementing that Article, or who falsifies,
tampers with or knowingly renders inaccurate any recording or monitoring device or method required to
be operated or maintained under Article 21 or regulations of the Environmental Management
Commission implementing that Article, shall be guilty of a misdemeanor punishable by a fine not to
exceed $10,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section 1001 provides
a punishment by a fine of not more than $10,000 or imprisonment not more than 5 years, or both, for a
similar offense.)
Notice of Intent must be accompanied by a check or money order for $400.00 made payable to the North
Carolina Department of Environment, Health, and Natural Resources. Mail three (3) copies of entire
package to:
Division of Environmental Management
NPDES Permits Group
Post Office Box 29535
Raleigh, North Carolina 27626-0535
- Page 3

v
N
6�
Corrective Action Plan Addendum
TOC Retail, Inc., Store No. 503-31
910 First Avenue
Hickory, North Carolina
October 21, 1994
916) -¢69 _q'1g5-
Prepared for
TOC Retail, Inc.
Marietta, Georgia
Front Royal Project No. 0011-92-048R
Prepared by
Front Royal Environmental Services, Inc.
Cary, North Carolina
,, �-H CARO/
rQ
S
Bryan J . Gee, P.E.
Project Manger
Bruce D. Reilly,
Engineering Dep
lent Manager
? 183 6
•
_
r•I

Contents
1 Introduction 1
1.1 Site Data 1
1.2 Purpose 1
1.3 Summary of Actions to Date 1
1.4 Previous Reports 3
2 Objectives 4
2.1 Objectives and Goals 4
2.2 Proposed Implementation Schedule 5
3 Exposure Assessment 5
3.1 Characteristics of Contaminants 5
3.2 Human Exposure Pathways 6
3.3 Receptors 7
3.4 Post Remedial Contamination Effects 8
4 Evaluation of Remedial AIternatives 8
4.1 Ground Water Remedial Options 8
4.1.1 In Situ Air Sparging With Soil Vacuum Extraction 8
4.1.2 Recovery, Treatment, and Disposal 9
4.1.3 Disposal Options 10
4.2 Recommended Remedial Alternative 10
5 Proposed CAP 11
5.1 Overview 11
5.1.1 Ground Water Remediation
5.1.2 Soil Remediation
5.2 Conceptual Design
5.3 Basis of Design
11
13
13
13
5.3.1 Recovery Pump 13
5.3.2 Oil/Water Separator 14
5.3.3 Air Sparging Tanks 14
5.3.4 Particle Strainer 14
5.3.5 Granular Activated Carbon 14
page ii

Contents (cont'd)
5.4 System Layout
5.5 Security and Safety
5.5.1 Security
5.5.2 System Safety Features
14
15
15
15
5.6 Site Limitations 16
5.7 System Maintenance 16
5.8 Compliance Monitoring 16
5.9 Ground Water Monitoring 16
6 Permits 17
6.1 Construction Permit 17
6.2 NPDES Permit 17
6.3 VES Registration 17
References 19
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
Figure 6
Figure 7
Figure 7B
Figure 7C
Figure 7D
Figure 7E
Figure 7F
Figure 7G
Figure 8
Figure 9
Figure 10
Figure 11
Figure 12
Figures
Site Location Map
Site Map
Potentiometric Map
BTEX Isoconcentration Map
Soil Boring Location Map - January 14, 1990
VES Location Map
Soil Boring and Cross Section Location Map - June 20, 1994
Cross Section A -A' - TPH as Diesel
Cross Section A -A' - TPH as Gasoline
Cross Section B-B' - TPH as Diesel
Cross Section B-B' - TPH as Gasoline
Cross Section C-C' - TPH as Diesel
Cross Section C-C' - TPH as Gasoline
Utility Map
Remedial System Location
Remedial System Layout
Piping and Instrumentation Diagram
NPDES Discharge Locations
page iii

1
Table 1
Table 2
Table 3
Table 4
Table 5
Table 6
Table 7
Table 8
Table 9
Contents (cont'd)
Tables
Monitor Well Construction Details and Water Table Elevation Data
Historical Ground Water Analytical Results
Soil Field OVA Screening Results - February 14, 1990
Historical VES Air Laboratory Analytical Results
Soil Field Screening Results - June 20, 1994
Soil Laboratory Analytical Results - June 20, 1994
Physical and Chemical Properties of Selected Gasoline Constituents
Evaluation of Ground Water Remedial Alternatives
BTEX Removal Efficiency Data for Ongoing Front Royal Project
Appendices
Appendix A Soil Boring Logs
Appendix B Soil Laboratory Analytical Report and Chain of Custody
Appendix C Completed Site Sensitivity Evaluation Worksheets
Appendix D Tank Tightness Certification
Appendix E Remedial System Specifications
Appendix F Sample Calculations
Appendix G NPDES Permit Application
page iv

r
Corrective Action Plan Addendum
TOC Retail, Inc., Store No. 503-31
910 First Avenue
Hickory, North Carolina
October 21, 1994
1 Introduction
1.1 Site Data
Front Royal Environmental Services, Inc. (formerly Edgerton Environmental Services, Inc.) has
been retained by TOC Retail, Inc. (TOC) to prepare a Corrective Action Plan (CAP)
Addendum for TOC Store No. 503-31 (former Tenneco Store No. 607-31), located at 910 First
Avenue, Hickory, North Carolina (the site). The site is located in the Hickory Quadrangle
(Figure 1), and is currently operating as a commercial gas station with three 4,000-gallon and
one 10,000-gallon gasoline underground storage tanks (USTs). Background information
concerning the site is found in the March 1992 Comprehensive Site Assessment (CSA) and
CAP, prepared by Front Royal, and submitted to the North Carolina Department of
Environment, Health and Natural Resources - Division of Environmental Management
(NCDEM).
1.2 Purpose
A leak resulting in the release of unleaded gasoline was discovered at the site in June 1990.
In response to the release, TOC retained Front Royal to prepare a CSA detailing the cause and
extent of potential contamination. The CSA was submitted to the NCDEM in May, 1992.
Front Royal has determined that soils and ground water at the site have been impacted by
benzene, toluene, ethylbenzene, and xylene (BTEX) constituents. The affected ground water
at the site falls under CIass GA as defined in the North Carolina Ground Water Classification
Standards (15 NCAC.2L). The purpose of this CAP Addendum is to further develop a strategy
for the remediation of impacted soils and ground water at the site.
1.3 Summary of Actions to Date
During the course of investigations conducted by Front Royal, 19 monitor wells were installed
at the site (Figure 2). The first three shallow monitor. wells (MW-1, MW-2 and MW-3) were
installed on January 11, 1990. In October 1990, Front Royal personnel installed four monitor
wells at the site. One deep well (MW-6) was installed ,in the vicinity of MW-1 to monitor
vertical migration of the contaminant plume. The other three shallow monitor wells (MW-4,
MW-5, and MW-7) were installed at the property boundaries to determine the extent of on -site
ground water contamination and to determine if the contaminant plume had migrated to
adjacent properties. On September 5, 1991, two additional shallow monitor wells (MW-8 and
MW-9) were installed at the site.
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On March 18 and 19, 1992, six monitor 0 through MW-15) were installed..
Monitor well MW-10 was installed south of the former pump island. Monitor wells M.W-11
through MW-15 were installed off -site to determine the extent of potential contaminant
migration to adjacent properties. In August 1992, three additional off -site monitor wells
(MW-16, MW-17, and xwMW-18) were installed by Front Royal personnel. In December 1992,
monitor well MW-19 was installed off -site, downgradient of the contaminant plume. A
complete discussion of monitor well installation and sampling is presented in the March 1992
CSA and the February 1994 CSA addendum.
The most recent water level data collected from the monitor wells indicate that ground water
at the site is at an average depth of 25.98 feet (Table 1). Potentiometric data indicate that the
hydraulic gradient at the site is to the southwest (Figure 3). A summary of ground water
laboratory analytical results (Table 2) indicates that the highest levels of ground water
contaminants were detected in monitor wel ls' MW-1, MW-2 and MW-5. Monitor wells MW-1
and MW-2 are located south and southwest of the current tankbed, and west of the former
tankbed (Figure 2). Monitor well MW-5 is located south of the pump islands. A total BTEX
isoconcentration map (Figure 4), based on the most recent sampling data, indicates that the
highest contaminant levels are south/southwest of the tankltold area and the pump islands:
On February 14, 1990, Front Royal personnel conducted a soil boring program to detertine
the extent of soil contamination. Three soil borings (SB-i, SB-2, and SB-3) were advanced
adjacent to the tank hold area (Figure 5). The remaining soil borings (SB-4 through SB-8)
were advanced along the supply lines from the tank area to the pump islands. Field screening
for organic vapors was conducted using an Organic Vapor Analyzer (OVA) on soil collected
a 2 foot intervals from each boring. The geld OVA results (Table 3) show that shallow soils
exhibit low levels of organic vapors, while the deeper soils contained organic vapors in excess
of 10aa parts per million (ppm),
Initial abatement of soil contamination was conducted using a soil vacuum extraction system
(VES) with three extraction wells (Figure 6). The extraction wells were installed at the site
on October 9 and 10, 1990. A summary of laboratory analytical data of air samples collected
from the 'VES (Table 4) indicates a substantial reduction in volatile organics recovered over
tithe. Detailed discussions of the VES, the air discharge sampling analytical results, and
effectiveness of the vacuum extraction system are presented in the March 1 '992 CSA.
At the request of the Mooresville Regional Office of the NCDEM, an additional soil boring
program was conducted to further determine the vertical and horizontal extent of soil
contamination. On June 20, 1994, 12 soil borings were advanced at the site by Front Royal
personnel using a truck mounted drill rig equipped with hollow stem augers and a split spoon.
sampler (Figure 7). Soil boring Logs are presented in Appendix A. Field screening for organic
vapors was conducted using an f-aHNu on soil collected at two foot intervals from each boring.
Selected samples from each boring were collected and submitted to a laboratory for analysis
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Corrective Action Plan Addendum
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for TPH by EPA Methods 3550 and 5030. The soil laboratory analytical report and chain of
custody are presented in Appendix B.
The field HNu results indicate that the soils over much of the site exhibit low levels of organic
vapors. The highest HNu reading, 240 parts per million (ppm), was detected at a depth of 16
to 17 feet in soil boring SB-6, located adjacent to the tank bed area (Table 5). Laboratory
analytical results indicate that low levels of TPH as diesel (EPA Method 3550) were detected
in borings SB-1, SB-3, and SB-4, located south of the tank area (Table 6). The highest levels
of TPH as diesel (16.8 mg/kg) and 59.9 mg/kg were detected in boring SB-8, located
immediately south of the tankbed. TPH as gasoline (EPA Method 5030) was detected above
method detection limits of 0.10 mg/kg in only one of the samples submitted for analysis
(SS-9B collected from boring SB-9), located adjacent to the tankbed.
Cross sections detailing the extent of soil contamination were prepared by Front Royal
personnel (Figures 7 through 7G). The data indicate that the areas of elevated soil
contamination are concentrated-aroupd the tank bed area, Based on the,triost,recent soil data,
Front Royal estimates that 50 cubic yards tetT son rennin at the site
A Site Sensitivity Evaluation (SSE) was prepared based on field observations made during the
June 1994 boring program and data collected during previous investigations. Completion of
the SSE indicated that the initial cleanup level for soils contaminated by TPH as gasoline is
40 mg/kg. The initial cleanup level for soils contaminated by TPH as diesel/kerosene is 160
mg/kg. The completed SSE worksheets are presented in Appendix C.
1.4 Previous Reports
On June 6, 1990, Front Royal prepared and submitted a report entitled "Results of Subsurface
Investigation". The report concludes that soil and ground water at the site have been impacted
by BTEX contaminants,
A CSA and a CAP were prepared by Front Royal and submitted to the NCDEM in March
1992. The report detailed the extent of ground water contamination and detailed the
installation of the VES.
A CSA Addendum was prepared by Front Royal and submitted to the NCDEM in February
1994. The report detailed the installation of additional monitor wells and concluded that
ground water .contamination at the site has been fully delineated.
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Objectives
2.1 Objectives and Goals
The objective of this CAP Addendum is to restore the quality of impacted ground water to
levels agreed upon by the NCDEM and TOC. Due to the current site conditions and the
economic issues involved with continuous long terin operation of a remedial system, TOC
proposes alternate ground water cleanup standards for the site. The proposal for alternate
ground water standards follows the guidelines defined in NCAC 15A, 21✓.0106 (k).
TOC proposes to rernediate ground water contaminants to the foliowing standards:
• Benzene
• Toluene
▪ Ethylbenzene
• Xylenes
MTBE.
50 µg1
2,500 ..mg/1
500 µg/1
2,000 jag/1
1,000 µg'1
Throughout 1993, monthly UST and transport line tightness tests were conducted by Ustman
Industries, Inc. Ustman issued a certificate of tightness indicating that the four gasoline USTs
and thekerosene tank all tested within acceptable limitsduring 1993 (Appendix D). The
results of the tank tightness tests, and the fact that no free product has been detected at the site,
indicate that contaminant sources at the site have been sufficiently controlled..
The time and direction of contaminant travel can be estimated from the ground water flow
velocity and direction. Potentiometric data indicate that the ground water flow is toward the
southwest. In the March 1992 CSA, the ground water seepage velocity was estimated to be
approximately 4.51 feet per day. This is a conservative estimate because the contaminants will
actually migrate at a slower rate.
The highest levels of ground water contaminants are concentrated downgradient of the tank
area and downgradient of the pump islands (Figure 4). A site investigation revealed that the
area surrounding the site is primarily commercial and residential. All of the businesses and
residences appear to be connected to municipal water, and none have apparent water supply
wells. It is expected that the ground water quality standards will be met within one year time
of travel upgradient of any receptor.
The primary surface water receptor located approximately 2,000 feet
southwest of the site. Due to the significant distance separating the site and the surface water
receptor, it is unlikely that contaminants at the site will impact the receptor.
As required by the guidelines, the adjacent property owners will be notified of the alternate
ground water quality standards proposed by TOC. The Health Director for Hickory and the
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Hickory Town Manager will also be notified. All parties will be notified of the NCDEM
Director's decision concerning the proposed alternate standards within 30 days of the issuance
of that decision. The implementation of the propose& corrective actions will be in accordance
with all applicable laws and regulations.
Specific goals of the corrective action plan are as follows: to reduce, prevent, and/or mitigate
further migration of hydrocarbon compounds to non -impacted areas and off -site properties;
to reduce or eliminate any risk to the public health and well-being; and, to remove and/or
reduce ground water contaminants to levels agreed upon by the NCDEM and TOC. Based on
current site conditions, TOC proposes the alternate ground water cleanup standards presented
above. The alternate standards will allow for adequate remediation of the site, minimizing the
risk to off site receptors and public health. All nearby businesses and residences are connected
to municipal water. The proposed alternate standards will be achieved with fewer years of
system operation, resulting in a significant cost savings for the remedial action.
2.2 Proposed Implementation Schedule
The proposed schedule for the implementation of the corrective action is as follows:
• Complete construction documents and solicit bids for system construction: Four
weeks following CAP acceptance,
• Begin equipment procurement: Eight weeks following CAP acceptance,
• Begin construction of system: Fourteen weeks following CAP acceptance,
• Complete construction, begin system startup: Sixteen weeks following CAP
acceptance, and
• System fully operational: Eighteen weeks following CAP acceptance.
This proposed schedule is based on an assumed delivery schedule for system equipment of six
weeks or less, and may require revision for unanticipated equipment delivery delays.
3 Exposure Assessment
3.1 Characteristics of Contaminants
Gasoline is a complex mixture of petroleum hydrocarbon compounds and additives. Aliphatic
hydrocarbons, cycloalkanes, alkenes, aromatic hydrocarbons, and polynuclear aromatic
hydrocarbons are the five major constituent groups found in gasoline. BTEX constituents have
high vapor pressures and are relatively insoluble in water (Table 7). Because BTEX
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contaminants prefer air as a carrier, they can be easily removed from ,ground water through air
sparging and air stripping technologies.
3.2 Human Exposure Pathways
Inhalation, ingestion, and dermal exposure are the exposure pathways from the gasoline
constituents found at the site to humans.
A release of gasoline at the site could occur from an accidental underground storage tank
overfill, a transport line leak, or from a leak at the pump islands.
The primary factors affecting the fate and transport of gasoline in the subsurface are the
physical and chemical properties of the gasoline constituents and the geologic and
hydrogeologic conditions at the site. Among the gasoline constituents, benzene and methyl
tert-butyl ether (MTBE) tend to migrate at a faster rate in ground water due to the high
solubility of both compounds in water. Therefore, benzene and MTBE concentrations are often
indicative of the leading edges of a plume consisting of gasoline constituents in ground water.
Some of the physical and chemical properties of the gasoline constituents affecting fate and
transport in the subsurface include the solubility and density of the constituent, biodegradation
rate, vapor pressure, and the affinity the constituent has towards soil particles and organic
carbon in the soil. The rate of movement of the constituent can be retarded by the adsorption
of the compound onto soil particles and organic carbon. Retardation of a compound can be
measured using partition coefficients such as the octanol/water partition coefficient and the
organic carbon partition coefficient.
Physical factors effecting the rate of movement of the constituents include the geology and
hydrogeology of the site. Gasoline releases usually occur above the water table in the
unsaturated zone, and the initial movement of the gasoline is downward due to the effects of
gravity. However, because of residual saturation, some of the gasoline constituents will remain
behind, trapped in the pores of the soil or rock. In addition, changes in lithology encountered
can alter the path and the rate of migration of the constituents in the saturated and unsaturated
zones.
If the gasoline or its constituents come in contact with the water table, the direction of
movement of the constituents changes from vertical to horizontal along with the water table
gradient. Factors such as advection and dispersion can then have an effect on the rate and path
the constituents will migrate. Due to the solubility of some of the constituents in ground water,
the processes of advection and dispersion may contribute to the degradation of the aquifer at
depth.
Since the partition coefficients, biodegradation rates, and dispersion coefficients have not been
determined for this site, a conservative estimate of the rate of movement of the more soluble
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constituents, such as benzene and. MTBE, can be assumed as the same as the velocity of the
ground water. In the CSA the ground water seepage velocity was estimated to be 4.51 feet per
day. This is a conservative estimate because these constituents will actually migrate at a slower
rate due to the effects of dispersion, adsorption, and biodegradation. Due to these factors, the
rate and direction of movement of the more mobile constituents can be conservatively
estimated from ground water velocity and flow direction.
3.3 Receptors
The primary surface water receptor is Edwards Branch, located 2,00 feet southwest of the site.
The significant distance separating the site and Edwards Branch makes surface water
contamination unlikely.
The convenience store at the site is a potential contaminant receptor, however, the convenience
store is connected to municipal water. A commercial wrecker service occupies the block
located directly across First Avenue, approximately 50 feet from the site. Businesses are
located 50 feet east of the site across 9th. Street, and 100 feet northeast of the site beyond a
wooded area. All of these businesses are connected to municipal water and none of them
appear to have subgrade basements.
'riot 1 me ampl atapproximately 0 feet w t> f the site.. A site investigation
revealed that none of the houses in the area appear to have subgrade basements or water wells.
A municipal sewer line begins near the residential area west of the site and runs north of the
site to 9th Street. The line then turns and continues south under the southbound side of 9th
Street. At the intersection of First Avenue and 9th Street the line turns east and runs under the
south side of First. Avenue (Figure 8). Municipal. water. lines are located under the east side
of 9th Street and under the south side of First Avenue.
Sections of the sewer and water lines under both First Avenue and 9th Street could potentially
be located within the contaminant plume however contaminant transport along the lines should
not occur. Typically, sewer and water lines are installed at a depth of approximately four feet.
The ground water at the site is approximately 21 feet below ground surface. The substantial
distance separating the lines and the water table makes contaminant transport along the lines
unlikely.
The primary risk to receptors with subgrade basements and crawl spaces is the potential for
contaminant buildup in the subgrade areas. If the contaminant plume were to reach a receptor,
it would be possible for explosive quantities of volatile organics to accumulate in the subgrade
areas. However, no potential receptors are located within the plume boundary. Also, because
no receptor is inside the plurne boundary, no contaminant exposure due to off -site excavation
should occur.
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The areas surrounding the site are predominately commercial and residential. It is not expected
that land use in the area will be changed in the near future. A site investigation revealed that
no apparent water wells are located in the area. Because the businesses and homes around the
site are connected to municipal water, it is not expected that the ground water in the area will.
be tapped as a potable water source.
3.4 Post llemedial Contamination Effects
The goals of the proposed remediation presented in this CAP are to reduce, prevent, and/or
mitigate migration of the contaminant plume, and to remove and/or reduce soil and ground
water contaminants to North Carolina standards or until a mutually acceptable level can be
agreed upon by the NCDEM and TOC. The potential for contamination will be reduced over
time with remediation. Residual BTEX constituents found after remediation efforts have
ceased will continue to biodegrade over time, thereby reducing the potential risk to ground
water and nearby surface waters.
4 Evaluation of Remedial Alternatives
4.1 Ground Water Remedial Options
Two treatment options, in situ bioremediation and ground water recovery, treatment and
disposal, are considered as applicable ground water treatment methods for the site. These
options are based on the ground water remediation technologies currently available, and are
evaluated as to feasibility, advantages, disadvantages, and effectiveness (Table 8).
4t.1.1 In Situ Air Sparging With Soil Vacuum Extraction
In situ air sparging involves injecting air below the water table through a system of air
sparging wells to create an air flow that enhances VOC migration from the ground water
toward the ground surface. The volatiles are removed from the soil through a system of
vacuum extraction wells installed above the water table in the vicinity of the air sparging wells.
The air flow created by the system increases the oxygen content of the ground water and soils
and increases the rate at which natural degradation of contaminants occurs.
The primary advantage of in situ air sparging with soil vacuum extraction is that no ground
water disposal is required. If the system operates properly, the possibility for reduced
operation and maintenance costs exists.
In situ air sparging can cause off -site migration of the contaminant plume. Because of the
heterogeneous nature of the underlying soils and bedrock, it would be difficult to predict how
the plume would migrate with the operation of the system. Due to the possibility that
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explosive quantities of volatile gases could accumulate in the system, explosion -proof
equipment may be necessary, depending on sv tern location and layout.
4.1..2 Recovery, Treatzent, and Disposal
Ground water recovery, treatment., and disposal (RTD) involves removing the contaminated
water from the ground, treating the water to acceptable contaminant limits, and disposing of
the treated water. Treatment and disposal options are selected depending upon the
characteristics of the ground water and the logistics of the site. The installation costs for a
recovery, treatment, and disposal system can be high due to the cost of the equipment used in
the system. Also, RTD requires disposal of treated ground water. Ground water disposal often
requires special permitting and extensive operation and maintenance to ensure permit
compliance.
In the rernediation of ground water contaminated with gasoline constituents, the primary
treatment process in an RTD system typically consists of stripping the contaminants from the
water by directing air through the process stream. The contaminants in the ground water are
volatilized and discharged to the atmosphere or to a vapor -phase treatment system. This
method takes advantage of the relative insolubility of lighter petroleum hydrocarbons in water
and their high vapor pressures.
Stripping f volatile contaminants can be accomplished using several process configurations.
In a strippinrtower system, the contaminated water flows downward through special packing
media housed within the stripper. This action spreads the water more thinly which increases
the surface area that is exposed to the air. Air is directed upward through the water flow to
volatilize the contaminants in the water. The flow rate of the water, the air flow, the packing
media and the residence time are the principal design variables. Stripping towers require
relatively steady flow rates to achieve peak removal efficiencies. These systems are also prone
to fouling of the packing media, particularly when treating ground water with a relatively high
iron content, as is the case in the North Carolina Piedmont.
In an air sparging system, the contaminated water is pumped into a tank where air is injected
through manifolds to diffusers located at the bottom of the tank. An air sparging system has
a lower theoretical efficiency than a stripping tower, due to the fact that surface area of the air/
water interface is reduced. However, air sparging requires less maintenance„ accommodates
low and variable flow rates more readily, and is not prone to fouling.
An additional advantage of RTD as a rernediation method is that it allows additional treatment
processes to be employed as necessary for optimum treatment. Granular activated carbon
(GAC) is commonly added as a polishing step prior to discharge. An oil/water separator may
also be used as a preliminary treatment step to remove any free phase product which may be
collected by the recovery pumping.
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Corrective Action Plan Addendum
TOC m Store No. 503-31
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October 21, 1994
4.1.
As stated above, the method of ground water disposal must be determined when using a ground
water recovery, treatment, and disposal system. The options for ground water disposal are:
infiltration galleries, injection wells, a special use discharge permit for a publicly owned
treatment works (POTW), or a National Pollution Discharge Elimination System (NPDES)
permit.
If possible, infiltration galleries or injection wells are the preferred disposal options. The
treated water is returned to the subsurface upgradient of the recovery point to create a closed
loop system, which eliminates the necessity of disposing of the treated water. In addition, the
returned water aids in driving the contaminant plume toward the recovery well. Infiltration
galleries and injection wells are feasible if the site has adequate space and proper soil
conditions.
A special use discharge permit from a POTW is usually the preferred option if a closed loop
system cannot be used. In the event of a system failure, discharge to a POTW provides a
treatment backup to avoid a contaminant release.
A National Pollutant Discharge Elimination System general permit is the final option if no
other discharge method is available. A NPDES general permit allows treated ground water to
be discharged into a storm sewer system or directly to surface water.
4.2 Recommended Reedial Alternative
Front Royal recommends the installation of a ground water remediation system using
pneumatic recovery pumps, an oil/water separator, air sparging, and granular activated carbon.
In addition, Front Royal recommends that a vacuum extraction system be used to remediate
soil contamination and enhance ground water recovery.
The efficiency and the cost effectiveness of the air sparging system make it the best remedial
option for the site. T. � IEX,gasoline are relativelyinsol in
all*V44,>1.0fo. ,41. Front Royal proposes that a series of two 670
gallon. air sparging tanks be installed at the site. Previous Front Royal projects have proven
air sparging to be an effective method of removing volatile organic compounds from ground
water. Data from an existing Front Royal air sparging system show that the air sparging tanks
consistently achieve 99°Jo removal of total BTEX contaminants (Table 9).
To increase the removal efficiency, and to ensure permit compliance, Front Royal proposes that
the remediation system include an oil/water separator and a granular activated carbon system.
The recovered ground water will be treated by the oil/water separator prior to entering the air
sparging tanks. The oil/water separator uses a series of internal filters to separate free phase
product from the ground water. The separated product floats to the top of the oil/water
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separator where it is removed by a skimmer arm. The separated product flows from the
oil/water separator to a temporary 55 gallon holding drum, where it will be collected for
removal and proper disposal.
The GAC system will be placed after the air sparging tanks to remove residual BTEX
contamination. The discharge from the air sparging tank will be directed to two 200 pound
activated carbon adsorption vessels placed in series. The additional treatment provided by the
GAC system will ensure proper treatment as well as permit compliance.
Treated ground water will be discharged to a nearby storm sewer drain under a NPDES
General permit. Mr; ° Keith , Bud with the City of Hickory, it forme Front Roy 1 t,discharge
permit app cadons-, ,woul : n be accepted umi spinetime in 1996. In addition, the site does
not have sufficient land space for the use of an injection well or infiltration gallery.
A VES is proposed to remove contaminants from the soil. Vacuum extraction is cost efficient
and has been proven to effectively remediate BTEX soil contamination. The existing VES and
three existing on -site vacuum extraction wells will be placed in operation. In addition, the
ground water recovery wells (RW-1, RW-2, and RW-3) will be used as vacuum extraction
points.
5 Proposed CAP
5.1 Overview
Front Royal recommends the installation of a ground water recovery and treatment system
using an oil/water separator, air sparging, and granular activated carbon. In addition, Front
Royal recommends the continued use of the VES at the site to remediate soil contamination..
Technical specifications for the proposed system are presented in. Appendix E.
5.1.1 Ground Water Remediation
Capture zone computer simulation modeling of the site was conducted based on slug test
information collected from three on site monitor wells. The computer model used was
Flowpath, version 5.0. The Flowpath model uses a two dimensional finite difference method
for steady-state horizontal flow. Information used in the site specific model includes:
hydraulic conductivity (based on slug tests), estimated porosity, average aquifer thicknesses,
average hydraulic gradient on site, and estimated off site hydraulic gradient. The model is only
as accurate as the values, or combined values, of these parameters.
As predicted by the model, six or more recovery wells would be required to capture the region
of elevated ground water contamination (total BTEX concentrations over 100 µg/1). This result
is primarily because of a high rate of ground water flow predicted by the model from the slug
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test data. Based on considerable experience, Front Royal does not believe this model
accurately represents ground water flow and, therefore, capture areas. The site has been
documented as significantly heterogeneous, and slug tests are probably not a reliable source
of site aquifer data to be used with a homogeneous computer simulation.
Based on this conclusion, Front Royal does not recommend the use of a computer simulation
for the determination of number and placement of recovery wells. Instead, Front Royal
recommends using the actual radii of influence of pumping recovery wells to better determine
aquifer parameters and calculate the ultimate number of recovery wells required. Therefore,
a remedial system consisting of three recovery wells located in the highest areas of ground
water contamination is recommended for the site. Once the system is operational, recovery
data from these wells can be collected and the need for additional recovery wells can be
accurately evaluated.
Recovery of the contaminated ground- water will be accomplished using submersible pneumatic
recovery pumps P-1, P-2, and P-3. The recovery pumps will be capable of pumping up to 2.0
gallons per minute and will be placed in six inch diameter recovery wells RW-1, RW-2, and
RW-3 (Figure 9).
Ground water will be pumped from the recovery wells to the treatment system (Figure 10).
Initially, recovered ground water will flow to an oil/water separator, OW-1. The free product
removed by the oil/water separator will flow to a 55 gallon holding drum, where it will be
collected for removal and proper disposal.
Air sparging tanks will be used to treat the contaminated ground water. Two 670 gallon tanks,
T-1 and T-2, with diameter of 60 inches and height of 60 inches will be placed in series
downstream of the recovery pumps. Air will be injected into the sparging tanks through a
series of air diffusers installed at the bottom of the tanks. Electric air blowers, B-1 and B-2,
will supply air to the tanks.
Effluent from the air sparging tanks will be pumped through a strainer, S-1, that will remove
particles greater than 50 microns in diameter, followed by the GAC system, which will remove
residual BTEX contamination. Treated effluent will be discharged under a NPDES permit to
the City of Hickory storm sewer.
An 8 feet x 12 feet storage shed will be placed on the site to house the process equipment.
Process equipment includes the following: control panel, pump logic controller, air compressor
and accessories, air sparging tank blowers, transfer pump, particle strainer, and the GAC
vessels.
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5.1.2 Soil Remediation
A VES will be used to enhance ground water recovery and remediate the contaminated soil at
the site. Vacuum extraction removes volatile organics from soil by in situ volatilization. The
VES and three vacuum extraction wells, EW-1 through EW-3, have been installed at the site.
In addition to the three existing vacuum extraction wells, the ground water recovery wells,
RW-1, RW-2, and RW-3 will be connected to the VES.
A header pipe connects the extraction wells with the above ground components of the VES.
The above ground components are housed in a 6 foot x 8 foot storage shed. The header pipe
from the extraction wells connects to a 55 gallon air/water separator tank. From the air water
separator the header pipe is connected to a vacuum gauge and an electric blower pump, B-3.
A discharge pipe is connected to the blower and vents outside of the building.
Due to the fact that the operation of the VES could result in the accumulation of explosive
quantities of volatile organics in the VES shed, a decision process for determining the need to
use explosion -proof VES equipment has been developed. If the highest total BTEX
concentration or the highest Total Petroleum Hydrocarbon (TPH) concentration from the VES
test data exceeds ten percent of the lowest BTEX constituent lower explosive limit (LEL), the
enclosed VES equipment provided will be explosion proof.
Ethylbenzene is the BTEX constituent with the lowest LEL, (10,000 ppm), therefore, ten
percent of the ethylbenzene LEL, or 1,000 ppm, is taken to be the maximum allowable BTEX
concentration in the extracted vapor. The highest TPH concentration observed during VES
operation is 2,700 ppm (Table 2). The highest TPH concentration exceeds the limit of 1,000
ppm, therefore explosion -proof VES equipmentis specified for the VES shed. The equipment
currently located in the VES shed will be upgraded to explosion -proof prior to continuous
operation of the system. The VES shed currently on -site will be used to house the explosion -
proof equipment..
5.2 Conceptual Design
The system blowers and air compressor system will be located in the process shed (Figure 10).
All system components will be equipped with the necessary valves and appurtenances as shown
on the piping and instrumentation diagram (Figure 11).
5.3 Basis of Design
5.3.1 Recovery Pump
Due to the low expected flow rates from the recovery wells, pneumatic recovery pumps, P-1,
P-2, and P-3, will be used to recover the contaminated ground water. The recovery pumps will
be capable of pumping up to 2.0 gpm, which is adequate to accommodate the expected yield
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from the recovery wells. The pumps will be made of stainless steel to provide durability and
corrosion resistance.
5.3.2 Oil/Water Separator
The oil/water separator, OW-1, is sized to accommodate a maximum flow rate of 5 gpm,
adequate for all expected flows to the system.
5.3.3 Air Sparging Tanks
The air sparging tanks and the air sparging blowers are sized based on retention time and
air/water ratio. The 670 gallon air sparging tanks, T-1 and T-2, are sized to maintain a
retention time of 200 minutes with an anticipated maximum flow rate of 3.0 gpm. The air
sparging blowers, B-1 and B-2, are sized to maintain a minimum air/water ratio of 150:1, based
on a maximum anticipated ground water flow rate of 3.0 gpm. The blowers will supply a
maximum of 130 standard cubic feet per minute (scfm) of air. Sample calculations for
determining the retention time and air/water ratio are included in Appendix F.
5.3.4 Particle Strainer
The particle strainer, S-1, is designed to protect the GAC system from fouling by solids. The
filter in the particle strainer will remove particulates with diameters of 50 microns and greater'
from the process stream.
5.3.5 Granular Activated Carbon
Two 200 pound GAC vessels, GAC-1 and GAC-2, are to be placed in series following the
particle strainer. The first carbon vessel will remove residual BTEX contaminants. As the first
carbon vessel is spent, the second carbon vessel will catch any breakthrough BTEX
contaminants. When this occurs, the first carbon vessel will be removed for proper disposal,
and the second carbon vessel will be moved into the first position. A new carbon vessel will
be installed in the second position. This change out process ensures proper treatment of the
process stream.
5.4 System Layout
The remedial system will be located along the north side of the site, out of the way of daily
business activities (Figure 9). The system equipment that is to remain outside will be enclosed
by a privacy fence (Figure 10).
page 14 of 19

Corrective Action Plan Addendum
TOC - Store No. 503-31
R93-185.SLF
October 21, 1994
5.5 Security and Safety
5.5.1 Security
All system equipment will be housed in either the process shed or the VES shed. Locks will
be placed on the shed doors to prevent unauthorized access. All equipment that will remain
outdoors, such as the oil/water separator and the air sparging tanks, will be enclosed by an 8
foot high privacy fence. The fence will be built with a locking gate to prevent unauthorized
entry.
5.5.2 System Safety Features
The remediation system is provided with multiple fail-safe features to prevent an accidental
release or discharge of contaminated ground water or recovered free product. In the event of
an equipment malfunction, power failure, or other incident which interferes with the proper
functioning of the system, these features will act to ensure that adverse consequences do not
occur.
A solenoid valve, SV-1, will be provided in the air supply line to the pneumatic recovery
pumps. In the event the air compressor, A-1, is shut down by one of the level switches, the
solenoid valve will close to prevent air flow to the recovery pumps. In addition, the valve
actuator will be configured such that the valve will close in the event of a power failure.
The 55 gallon holding drum that receives free -phase gasoline from the oil/water separator, will
be placed on a reinforced concrete pad constructed such that it will provide secondary
containment in the event of a discharge from the drum. In addition, the holding drum will be
equipped with a high level shutoff switch, LE-3. When triggered, the high level switch in the
holding drum will shut off the air compressor supplying the pneumatic pumps and close the
solenoid valve on the air supply lines. The switch will be triggered when the free product level
in the holding drum reaches 30 inches.
To prevent tank overflow, the first air sparging tank, T-1, will be equipped with a high level
shutoff switch that activates. when the water in the tank reaches 48 inches. When triggered,
the high level switch will shut off the air compressor and close the solenoid valve. In addition,
both of the air sparging tank blowers will be equipped with pressure relief valves, PRV-1 and
PRV-2, and high pressure switches, PSH-1 and PSH-2. If triggered, the high pressure switches
will shut down the blowers, as well as shut off the air compressor and close the solenoid valve.
Both of these shutdowns will require a manual reset.
A pressure relief valve, PRV-4, will be provided in the process line to prevent excessive
pressure buildup in the carbon canisters. When the water pressure in the line is too high, the
pressure relief valve will bleed off excess water to lower the pressure. The water will be piped
from PRV-4 to the first air sparging tank, T-1.
page 15 of 19

Corrective Action Plan Addendum
TOC - Store No. 503-31
R93-185.SLF
October 21-, 1994
The air/water separator in the VES will be equipped with an intrinsically safe, explosion proof .
level switch, LE-4, that will activate when the tank becomes 2/3 full. When triggered, the high
level switch in the air/water separator will shut off the VES blower. In addition, the VES
blower will be equipped with a low pressure switch, PSL-3. When energized, the low pressure
switch will shut down the VES blower.
5.6 Site Limitations
Data presented in this CAP represent isolated data points. Conclusions of this CAP, including
maps, calculations and models, are based on extrapolations between data points, as well as
subjective hydrogeologic, soils and geologic interpretation. Therefore, the data may not be
completely representative of all conditions in the study area.
Recommendations of this CAP are based on best available data. It is the premise of this effort
that the information collected and analyzed is representative of a reasonable effort to
understand and solve the existing problem.
5.7 System Maintenance
The maintenance program for the system will consist of weekly site visits, during which all
system components will be checked for proper operation. Preventive maintenance will be
performed as required. Records of all maintenance checks and flow quantities will be
maintained at the site.
5.8 Compliance Monitoring
Once the remediation system is installed and operating, compliance monitoring of the system
effluent and ground water will be initiated. The purposes of the maintenance and monitoring
program are to ensure system performance, to meet regulatory requirements, and to monitor
the effectiveness and progress of the corrective action.
The treatment system effluent will be sampled monthly, or as required by the discharge permit.
In addition, the system influent will be sampled monthly in order to monitor the removal
efficiency of the system. The influent and effluent samples will be analyzed for Purgeable
Aromatics/MTBE (EPA Method 602 Modified), as well as any additional parameters required
by the discharge permit. The effluent flow and recovered free product quantities will be
monitored and recorded on a weekly basis.
5.9 Ground Water Monitoring
The ground water monitoring program will consist of sampling and analysis of selected
monitor wells and water level measurements in all monitor wells. These data will confirm the
page 16 of 19

Corrective Action Plan Addendum
TOC - Store No. 503-31
R93-185.SLF
October 21, 1994
efficiency of the remediation system in containing the plume and allow the progress of the
cleanup to be monitored.
Quarterly sampling is proposed for wells, MW-10, MW-11, MW-13, MW-14, and MW-15.
These wells are selected because they represent the perimeter of the site and will, therefore,
serve to confirm that the migration of contamination has been arrested. Samples will be
analyzed for Purgeable Aromatics/MTBE (EPA Method 602 modified).
Water levels will be measured in all monitor wells in order to confirm that the ground water
recovery from the recovery wells is influencing the hydraulic gradient at the site sufficiently
to ensure the containment of the contaminant plume. Water levels will be measured monthly
for the first six months of system operation, and quarterly thereafter.
6 Permits
Prior to construction of the remediation system, all required permits for installation and
operation will be obtained. Copies of issued permits will be provided to the NCDEM when
available.
6.1 Construction Permit
A construction permit will be obtained from the City of Hickory. The permit will include a
fire protection inspection and approval from the city fire department.
6.2 NPDES Permit
A NPDES General permit will be obtained from the NCDEM to allow system effluent to be
discharged to the City of Hickory storm sewer system (Appendix G). Based on information
collected during site investigations, Front Royal has identified two potential system effluent
discharge points in the area (Figure 12). The first option is a storm sewer drain located
approximately 180 feet north of the site along Main Avenue, S.W. The second option is a
storm sewer drain located approximately 220 feet east of the site along First Avenue.
6.3 VES Registration
Preliminary estimates- of total VOC emissions, based on data 1990 air laboratory analytical
results (Table 3), indicate that the VES discharge will not exceed the 40 lb/day total VOC
emission limit (Appendix F). The results from the most recent soil boring program indicate
that soil contaminant Levels at the site may have decreased over time. Of the samples
submitted for laboratory analysis for TPH, only two samples exceeded the state action limits.
page 17 of 19

Corrective Action Plan Addendum
TOC - Store No. 503-31
R93-185.SLF
October 21, 1994
Based on the most recent soil data, Front Royal proposes to install and operate the VES as
described in this CAP. Prior to continuous system operation, a pilot test will be conducted and
the VES discharge will be sampled to ensure compliance with VOC emission standards. In
the event the system does not meet emission standards the NCDEM will be notified and the
need for vapor phase carbon or other control technologies will be evaluated. The sampling
results and emission calculations will be provided to the NCDEM with the completed system
registration package.
page 18 of 19

References
Comprehensive Site Assessment, Front Royal Environmental Services, Inc., March 1992.
Comprehensive Site Assessment Addendum, Front Royal Environmental Services, Inc.,
February 1994
Corrective Action Program, Front Royal Environmental Services, Inc., March 1992
Results of Subsurface Investigation, Front Royal Environmental Services, Inc., June 1990
page 19 of 19

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SITE LOCATION MAP
TOC STORE NO. 503-31
910 FIRST AVENUE SW
HICKORY, NC
- rr•
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FRONT ROYAL
RNYIRONMENTAL SERVICES, INC.
ji-s
FIGURE 1
SCALE: 1" = 2,000'
PROJ. # 0011-92--048

1 SITE MAP
TOC STORE NO. 503-31
910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
FRONT ROYAL
ENVIRONMENTAL SERVICES. INC.
EESI PROJECT # 0011-92-048

to
u CO
POTENTIOMETRIC MAP
TOC STORE NO. 503-31
,910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
EESI PROJECT # 0011-92--048

183.3
BHT-15
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N-179
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NDJ
[ND
9UT— 11
LEGEND
s - MONITOR WELL LOCATION
- TYPE III MONITOR WELL
19J - BTEX ISOPLETH (ug/1)
- TOTAL BTEX CONCENTRATION (ug/1)
ND - NOT DETECTED
NS - NOT SAMPLED
* - CONTAINS ONE OR MORE ESTIMATED
J VALUES
(1,105I
* SAMPLES COLLECTED 06/17/93
0' 20' 40'
80'
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
EESI PROJECT # 0011-92-048
BTEX ISOCONCENTRATION
TOC STORE NO. 503-31
910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
FIGURE
4
SCALE
1" = 40'

co
0
MS SfMHAV 1ST
1
0
0
0
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9TH STREET SW
0
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SOIL BORING LOCATION MAP
2/14/90
TOC STORE NO. 503-31
910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
FRO
T ROYAL
ENVIRONMENTAL SERVICES, INC.
EESI PROJECT # 0011--92-048

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VACUUM EXTRACTION WELL
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TOC STORE NO. 503-31
910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
FRONT ROYAL
ENVIRONMENTAL SERVICES. INC.
EESI PROJECT # 0011-92-048

SOIL BORING AND CROSS
SECTION LOCATION MAP
TOC STORE NO. 503-31
910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
PROJECT # 0011-92-048

GROUND -
SURFACE
5' -
10' -
15' -
20' -
25' -
A
SB--5
SB-4
SB--7 SB-
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LE GEND.
RED -BROWN SILTY
SAND TO SILTY CLAY
- SAPROLITE
\\ - BEDROCK
1.17 TPH CONCENTRATION
L---d (AS DIESEL) (ppm)
BDL -- BELOW DETECTION
LIMITS
; OJ -- TPH ISOPLETH
/ (AS DIESEL) (ppm)
CROSS SECTION A -A' --- TPH
CONCENTRATION AS DIESEL
TOC STORE NO. 503-31
910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
FIGURE 7B
SCALE: AS SHOWN
PROJ. # 0011-92-048

GROUND -
SURFACE
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10' -
15' -
20' -
A
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t
•
LEGEND
- RED -BROWN SILTY
SAND TO SILTY CLAY
- SAPROLITE
- BEDROCK
-- TPH CONCENTRATION
(AS GASOLINE) (PPm)
BDL - BELOW DETECTION
LIMITS
[BDL1
CROSS SECTION A ---A' - TPH
CONCENTRATION AS GASOLINE
TOC STORE NO. 503-31
910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
FRONT ROYAL
ENVIRONMENTAL SERVICES. INC.
FIGURE 7C
SCALE: AS SHOWN
PROJ. # 0011-92-048

GROUND --
SURFACE
5' -
10' -
15' -
20' -
25' -
B B'
SB--10 ' SB-8 SB-5 SB-2
ASPHALT
CONCRETE
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SCALE: HORIZ. 1" = 20'
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VERTICAL EXAGGERATION = 4
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BDL
BDL
LEGEND
- RED -BROWN SILTY
SAND TO SILTY CLAY
- SAPROLITE
- BEDROCK
- TPH CONCENTRATION
(AS DIESEL) (ppm)
- BELOW DETECTION
LIMITS
CROSS SECTION B---B' - TPH
CONCENTRATION AS DIESEL
TOC STORE NO. 503-31
910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
FIGURE 7D
SCALE: AS SHOWN
PROJ. # 0011-92-048

GROUND -
SURFACE
5' -
10' -
15' -
20' -
25' -
B
SB-10
B'
SB-6 SB-5 SB-2
ASPHALT
BDL
EIDL,
BDL
BDL
WA ,BR : LE
SCALE: HORIZ. 1" = 20'
VERT. 1" = 5'
VERTICAL EXAGGERATION = 4
CONCRETE
BDL
- - -}HDL I --
BDL
-BDL
IBDL1
BDL
LEGEND
- RED -BROWN SILTY
SAND TO SILTY CLAY
-- SAPROLITE
- BEDROCK
- TPH CONCENTRATION
(AS GASOLINE) (ppm)
- BELOW DETECTION
LIMITS
CROSS SECTION B-B' -- TPH
CONCENTRATION AS GASOLINE
TOC STORE NO. 503-31
910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
FRONT ROYAL FIGURE 7E
SCALE: AS SHOWN
ENVIRONMENTAL SERVICES, INC. PROD. # 0011- 92- 048

GROUND
SURFACE
5' —
10' —
15' —
20' —
25' —
C
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6.37
1.17I
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LEGEND
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SAND TO SILTY CLAY
— SAPROLITE
— BEDROCK
TPH CONCENTRATION
(AS DIESEL) (ppm)
— BELOW DETECTION
LIMITS
— TPH ISOPLETH
(AS DIESEL) (ppm)
CROSS SECTION C-C' - TPH
CONCENTRATION AS DIESEL
TOC STORE NO. 503-31
910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
FRONT ROYAL FIGURE 7F
SCALE: AS SHOWN
ENVIRONMENTAL SERVICES. INC. pROJ. # 0011-92-048

GROUND
SURFACE
C
SB-9
GRASS j
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10'
15'
20'
25'
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SH-3
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[BDL
LEGEND,
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HDL - BELOW DETECTION
-1BDLI - _ _ _ LIMITS
BDLI
r
BDLI
SCALE: HORIZ. 1" = 20'
VERT. 1" = 5'
VERTICAL EXAGGERATION = 4
Of - TPH ISOPLETH
A(AS GASOLINE) (ppm)
CROSS SECTION C-C' --- TPH
CONCENTRATION AS GASOLINE
TOC STORE NO. 503-31
910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
FIGURE 7G
SCALE: AS SHOWN
PROJ. # 0011-92-048

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-S- - MUNICIPAL SEWER LINES*
- MUNICIPAL WATER LINES*
P` - OVERHEAD POWER LINES
* INFORMATION PROVIDED BY THE CITY
OF HICKORY ENGINEERING DEPARTMENT
P
0' 20' 40'
80'
0
H
z
0
ENVIRONMENTAL SERVICES. INC.
PROJECT # 0011-92-048
UTILITY LOCATION MAP.
TOC STORE NO. 503-31
910 FIRST AVENUE SW
I HICKORY, NORTH CAROLINA
FIGURE
8
SCALE
1" = 40'

N
IZT-12
Mi'-1E
1R--14
X1'--17
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-1
S 11T-11
KW-19 9
0MT-15
LEGEND
9 - MONITOR WELL LOCATION
- TYPE III MONITOR WELL
a - PROPOSED RECOVERY WELL
LOCATION
0 - EXTRACTION WELL LOCATION
- VES SYSTEM
- VES HEADER
- GROUNDWATER RECOVERY LINE
- TREATMENT SYSTEM
0' 20' 40'
80'
0
E1
0
e,
cn
0
Ili]
O
z
W
Qi
0
rn
0
f-+
910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
FIGURE
9
SCALE
1" = 40'

P-4, TRANSFER PUMP
1/3 HP, 230/3/80
GAC-1 & GAC-2
GRANULAR ACTIVATED CARBON
CANISTERS, 200 LB. CYLINDERS
T-1 & T-2, 800 GALLON GROUNDWATER SPARGING TANKS
B-1 & B-2, AIR SUPPLY BLOWERS
4.5 HP, 480/3/00, 130 SCFM 0 80" WATER
T-4, 55 GALLON MR/WATER SEPARATOR
PNEUMATIC CONTROL
LINE TO RECOVERY PUMP(s)
EFFLUENT
DISCHARGE
P-1, P-2 & P-9. GROUNDWATER RECOVERY PUMP, 0-2 GPM
B-3, VES BLOWER
5.5 HP. EXPLOSION PROOF 480/3/80.
80" WATER VACUUM 0 180 SCF11
T-3, 55 GALLON FREE PRODUCT HOLDING DRUM
8' TALL WOOD
PRIVACY FENCE
WITH 8' WIDE GATE
AD--1, AIR DRYER, 115/1/80
A-1, AIR COMPRESSOR, 5 HP, 230/3/80,
15.1 ACF11 AT 100 PSIG, 80 GALLON RECEIVER
WITH AFTERCOOLER
OW-1, OIL/WATER SEPARATOR
INFLUENT FROM
RECOVERY WELL
0
z
0
L
ENVIRONMENTAL SERVICES, INC.
910 FIRST AVENUE SW
PROJECT # 0011-92-048
HICKORY, NORTH CAROLINA
FIGURE
10
SCALE
1/2" = 1►0"

P-4, TRANSFER PUMP
1/3 HP, 230/3/80
GAC-1 dt GAC-2
GRANULAR ACTIVATED CARBON
CANISTERS, 200 LB. CYLINDERS
(MANUAL RESET)l
0n
SO"
4:1)
T-1 & T-2, ,800 GALLON GROUNDWATER SPARGING TANS
B-1 & B-2, .AIR SUPPLY BLOWERS
4.5 HP, 480/3/80, 130 SCFM 0 80" WATER
T-3, 55 GALLON FREE PRODUCT STORAGE DRUM
• P-1, P-2 & P-3, GROUND WATER RECOVERY PUMP, 0-2 GPM
TO T-1
PBV-4 1OPsI
GAC --1
GAC-2
1121
0n (UA L RESET)
A pd`�
DISCHARGE TO STORM[ SEWER
UNDER NPDES PERMIT
FIRS? FUNCTION
SECOND MEMO!?
TRIED/FOURTH FUNCTION
LETTER
A
E
7
H
L
P
R
s
T
v
ANALYZER
now
HAND
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VACUUM
ALARM
ELEMENT
INDICATOR
REDUCING
muss
HIGH
LOY
RECORDER
TR1VALVE
OTHER ABBREVIATIONS USED
HOA -- HAND -OFF -AUTOMATIC
B-3, VES BLOWER
5.5 HP, EXPLOSION PROOF 480/3/80,
80" WATER VACUUM 0 180 SCFM
T-4. 55 GALLON AIR/WATER SEPARATOR
T
1
off (MANUAL RESET)
04/
-
1
MANUAL]
RESET)
r
— t
EW-1
EW-2
E W--- 3
LEGEND
•
AD-1, AIR DRYER, 115/i/80
A-1, AIR COMPRESSOR, 5 HP, 230/3/80,
15.1 ACFIL AT 100 PSIG. 80 GALLON RECEIVER
WITH AFTERCOOLER
OW-1, OIL/WATER SEPARATOR
PNEUMAiTIC (AIR) LINES
- --- — — - ELECTRICAL OR LOGIC LINES
- PIPING (LIQUID) OR PROCESS LINES
- EQUIPMENT
FAIL CL0U
NOUZIU.T OPEN
RECOVERY PUMPS
P-1, P-2, P--3
RW-1
r RW-2
RW-3
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
rPROJECT # 0011-92-048 I
PIPING AND INSTRUMENTATION
DIAGRAM
TOC STORE NO. 503-31
910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
v
FIGURE
11
SCALE
N
NTS

F-+
Z En
I 1 E
r tJ
0
0
NPDES DISCHARGE LOCATIONS
TOC STORE NO. 503-31
910 FIRST AVENUE SW
HICKORY, NORTH CAROLINA
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
PROJECT # 0011-92-048

Table 1. Monitor Well Construction Details and Water Table EIevation Data*
Well Total Screened Depth to
No. Depth Interval Water
(feet) (feet) (feet)
MW-1 34.90 20.0-35.0 24.24
MW-2 35.16 20.0-35.0 23.77
MW-3 34.95 20.0-35.0 23.54
MW-4 33.08 23.0-33.0 25.62
MW-5 28.38 19.5-29.5 21.60
MW-6 * * 103.00 ** 25.17
MW-7 29.73 20.0-30.5 23.77
MW-8 34.88 20.0-35.0 24.62
MW-9 36.40 22.0-37.0 22.51
MW-10 32.21 18.0-33.0 23.35
MW-11 34.81 20.0-35.0 26.61
MW-12 49.71 35.0-50.0 32.42
MW-13 39.82 25.0-40.0 30.94
MW-14 *** *** ***
MW-15 49.32 35.0-50.0 30.47
MW-16 39.41 25.0-40.0 31.19
MW-17 41.85 28.0-43.0 31.47
MW-18 32.41 17.5-32.5 24.09
MW-19 38.96 19.5-39.5 22.24
Top of Casing
Elevation
(feet)
100.58
99.44
99.31
101.92
97.20
100.44
97.71
99.85
95.50
99.47
103.55
102.42
107.03
***
92.39
106.44
107.22
100.39
NA
Elevation of
Water Table*
(feet)
76.34
75.67
75.77
76.30
75.60
75.27
73.94
75.23
72.99
76.12
76.94
70.00
76.09
***
61.92
75.25
75.75
76.30
NA
NA - Not Applicable
* - Groundwater data collected on June 17, 1993. Elevations are measured from an arbitrary
datum of 100 feet.
MW-6 is a deep well cased to 40 feet and open borehole in bedrock to 103 feet.
*"`* - Not able to locate well.
Front Royal Project 0011-92-048
119248-1.slf

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Table 2. Historical Ground Water Analytical Results (continued)
Date Well
Sampled No
Results (µgfll
Parameters
Benzene
Ethyl- Isopropyl 1,2 Dichloro- 1,2 Dichloro- CIS-1,3 Dichltiro-
Toluene benzene XvIenes MTBE Ether EDB ethane propane propane
12/18/91 MW-1 2,200.0 5,000.0 410.0 6,200.0 6,400.0 NA 120.0 130.0 BDL BDL
MW-3 160.0 39.0 47.0 780.0 240.0 NA 2.4 6.3 BDL BDL
MW-4 22.0 15.0 3.2 89.0 NA NA BDL 3.8 BDL BDL
MW-5 730.0 5,300.0 680.0 6,200.0 410.0 NA 160.0 37.0 BDL BDL
01/16/92 MW-9 BDL BDL BDL BDL BDL NA BDL BDL BDL BDL
03/I7/92 MW-1 890.0 1,700.0 100.0 2,500.0 2,500.0 NA 54.0 NA NA NA
MW-3 240.0 22.0 71.0 1,200.0 32.0 NA 1.4 NA NA NA
MW-4 10.0 6.2 1.4 47.0 13.0 NA BDL NA NA NA
MW-5 390.0 2,500.0 270.0 2,700.0 190.0 NA 100.0 NA NA NA
03/20/92 MW-10 210.0 16.0 BDL 390.0 9.0 NA NA NA NA NA
MW-11 BDL BDL BDL BDL BDL NA NA NA NA NA
MW-13 BDL • 1.0 BDL BDL BDL NA NA NA NA NA
MW-I4 510.0 24.0 20.0 400.0 1,700.0 NA NA NA NA NA
04/10/92 MW-12 11.0 BDL BDL 2.0 BDL NA NA NA NA NA
MW-15 BDL BDL BDL BDL BDL NA NA NA NA NA
07/20/92 MW-4 13.0 4.0 BDL 28.0 9.0 NA NA NA NA NA
MW-7 BDL BDL BDL 3.0 BDL NA NA NA NA NA
MW-10 89.0 4.0 BDL 170.0 BDL NA NA NA NA NA
MW-14 280.0 23.0 32.0 260.0 2,200.0 NA NA NA NA NA
NC Groundwater
Standard (2L) 1 1,000 29 530 200 ** 0.0004 0.38 0.56 **
BDL - Below Detection Limit of 1.0 ag/1
J - Estimated value. reported result Is less than detection limit
NA - NotAnalyzed
+ - Trip Blank Sample
** - Substances which are not naturally occuring and for which no standard
is specified shall not bepremitted in any detectable concentrations.
*** - Not able to locale well.
EESI Project 0011-92-0481i
119248-2.slf

CIS-1,3 Dichloro
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Table 3 . Soil Field OVA Screening Results* - 2/14/90
Depth
(feet) SB-1 SB-2 SB-3
OVA Reading (ppm)
SB-4 SB-5 SB-6 SB-7 SB-8
2.0 110.0 480.0 0.5 250.0 0.0 0.0 0.5 12.0
4.0 60.0 540.0 1.0 270.0 0.0 0.0 710.0 0.0
5.0 *** *** 1000+ ***
6.0 1000+ 630.0 3.5 330.0 760.0
8.0 1000+ 700.0 12.0 780.0 460.0
10.0 370.0 660.0 12.0 920.0 ***
12.0 610.0 490.0 15.0 1000+
14.0 1000+ 10.0 1000+
15.0 1000+ *** *** ***
***
* - screening conducted on February 14, 1990
*** - end of boring
Front Royal Project 0011-92-048R
119248-3.slf

Table 4. Historical VES Air Laboratory Analytical Results
HNu Volume TPH
Date Reading Benzene Toluene Ethyl Benzene Xylenes TPH CO2 Extraction
Sampled (ppm) (per) (PPm) (110) (ppm) (11g/1) (ppm) (ugil) (ppm) (gel) (mom) (%) (gal/day)
04/11/91*1 190.0 527.0 162.0 860.0 224.0 89.0 53.0 699.0 158.0 26.6 2.8 26.782
05/02/91 * I NC 139.0 43.0 208.0 48.0 16.6 3.9 179.0 41.0 4.0 0.5 3.981
05/15/91 * 1 220.0 246.0 75.0 371.0 96.5 40.3 9.1 328.0 73.9 8.3 1.0 8.312
06/10/91**2 192.0 12.0 130.9 13.4 115.5 900.0 1.3 4.196
07/29/91**2 NC 11.0 37.0 39.0 140.0 831.0 0.0 4.838
08/15/91**3 82.0 11.0 120.0 27.0 260.0 330.0 0.9 1.071
09/17/91**3 44.0 10.0 16.0 10.0 160.0 200.0 4.4 0.965
10/15/91**3 0.6 0.0 49.0 14.0 130.0 1,100.0 0.5 0.749
11/13/91**3 9.2 7.0 19.0 14.0 44.0 1,200.0 1.7 0.352
12/18/91**3 178.0 0.0 16.0 5.9 56.0 770.0 0.5 0.259
01/16/92**3 160.0 9.0 27.0 25.0 140.0 2,700.0 0.4 0.706
03/20/92** 112.0 110.0 20.0 11.0 35.0 2,200.0 NA NA
05/22/92** 9.0 2.6 2.8 3.1 26.0 NA NA NA
07/20/92** 75.0 30.0 BDL BDL BDL 1,055.0 NA NA
09/02/92** 360.0 3.1 22.0 15.0 63.0 630.0 NA NA
11/06/92** 115.0 1.0 2.0 1.0 7.0 59.0 NA NA
02/23/93*** 57.0 2.06 0.6 .3.1 0.8 8.8 2.0 28.3 6.5 2,240.0 0.4 NA
04/22/93*** 280.0 BDL 34.0 BQL 88.0 BQL NA NA
Laboratory analysis performed by Industrial and Environmental Analysis, Inc.
* * Laboratory analysis performed by Southern Petroleum Laboratories. Inc.
* ** Laboratory analysis preformed by Graseby RTL.
**** Laboratory analysis performed by Geochem, Inc.
I Sample collected in Tedlar bag.
2 Sample collected in stainless steel gas container.
3 Sample collected in an evacuted stainless steel gas cylinder.
NC Not Collected
NA Not Analyzed
BDL Below Detection Limit.
BQL Below Quantitation Limit
Front Royal Project 0011-92-048R
119248-5.slf

Table 5. Soil Field Screening Results -- 06/20/94*
Depth Soil Boring Identification
(feet) HNu Reading (ppm)
SB-1 SB-2 SB-3 SB-4 SB-5 SB-6 SB-7 SB-8 SB-9 SB-10 SB-11 SB-12
2.0 - 3.0 0.6 0 6.8 5.1 9.5 6.6 5.0 3.8 3.5 0.6 6.5 5.4
3.0 - 4.0 , 0.3
4.0 - 5.0 1.7 7.6 3.6 9.4 4.0 5.1 4.0 4.0 0.3 6.2 5.6
5.0 - 6.0 1.4
6.0 - 7.0 0.0 7.5 5.1 9.0 0.0 5.3 4.2 3.9 0.1 6.0 5.5
7.0 - 8.0 0.5
8.0.- 9.0 0.4 7.2 3.4 8.4 0.0 5.3 4.2 3.4 0.1 .6.3 5.8
9.0 - 10.0 0
10.0 - 11.0 1.0 6.0 2.6 1.0 5.6 4.7 3.8 0.0 5.8 6.3
11.0 - 12.0 0
12.0-13.0 0.4 10.0 4.3 0.6 6.3 4.8 22.0 0.1 5.0 6.1
13.0 - 14.0 *** 0
14.0-15.0 8.4 3.7 2.4 5.3 5.6 140.0 0.0 5.3 6.4
15.0 - 16.0 8.4 *BR*
16.0 - 17.0 7.2 8.0 0.2 6.2 11.0 240.0 0.0 6.3 6.2
17.0 - 18.0 3.8 8.2
18.0 - 19.0 6.5 1.9 6.5 8.7 *BR* 0.0 6.0 6.1
19.0 - 20.0 7.5 *BR*
20.0-21.0 4.8 8.0 13.4 0.0 7.2 6.0
21.0 - 22.0 6.2 *BR*
22.0 - 23.0 9 7.7 8.1 10.0 12.4 .8.0 5.7
23.0 - 24.0 *** *** *BR* *** *** *** ***
* - Boring program conducted by Front Royal personnel
All depths measured in feet below ground surface
ppm - parts per million
*** - boring terminated
*BR* - boring terminated, bedrock encountered
Front Royal Project 0011-92-048R
119248b.slf

Table 6. Soil Laboratory Analytical Results - 06/20/94*
Sample
Indentification
SS-1A
SS-2A
SS-2B
SS-3A
SS-3B
SS-4A
SS-4B
SS-5A
SS-5B
SS-6A
SS-6B
S S-7
SS-8A
SS-8B
SS-9A
SS-9B
SS-I0A
SS-10B
SS-11A
SS-11B
SS-12
Sample Depth
interval
(feet)
4.0 - 6.0
6.5 - 8.5
14.5 - 16.5
4.0 - 6.0
12.0 - 14.0
6.0 - 8.0
12.0 - 14.0
3.5 - 5.5
17.5 - 18.0
4.0 - 6.0
14.0 - 16.0
12.0 - 14.0
6.0 - 8.0
20.0 - 22.0
4.0 - 6.0
16.0 - 18.0
4.0 - 6.0
16.0 - 18.0
8.0 - 10.0
20.0 - 22.0
10.0 - 12.0
TPH as Diesel
Method 3550
(mg/kg)
2.63
BQL
BQL
1.51
6.37
1.07
1.17
BQL
BQL
BQL
BQL
1.85
16.80
59.90
BQL
BQL
BQL
BQL
BQL
19.10
BQL
TPH as Gasoline
Method 5030
(mg/kg)
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
BQL
2,710.00
BQL
BQL
BQL
BQL
BQL
* - Samples collected by Front Royal personnel on June 20, 1994
mg/kg - milligrams per kilogram
BQL - Below Practical Quantitation Limit of 1.0 mg/kg for TPH as Diesel
0.10 mg/kg for TPH as Gasoline
Samples analyzed by Chemical & Environmental Technology, Inc.
Cary, North Carolina
Front Royal Project 0011-92-048R
119248a.slf

Table 7. Physical and Chemical Properties of Selected Gasoline Constituents*
Log OctanollWater Water Specific Vapor Henry's Law
Partition Coefficient Solubility (mg/L) Gravity Pressure (mm Hg) Constant (atm-m3/mole)
Benzene 2.13 1791.0 0.88 95.19 0.00543
Toluene 2.73 534.8 0.87 28.40 0.00594
Ethylbenzene 3.15 161.0 0.87 9.53 0.00844
Xylenes 3.12 175.0 0.88 6.60 0.00510
mg/L - milligrams per liter
mmHg - millimeters of Merculy
atm-m3/mole - atmosphere -cubic ureters per mole
* - Howard, 1989
Front Royal Project 0011-92-048R
119248-7.slf

Table 8. Evaluation of Ground Water Remedial Alternatives
Remeidal
Alternative
Feasibility
Ground Water
Disposal Options
Advantages
Disadvantages
Ground
Viable technology
Injection Wells
1) Proven containment and
1) System permitting often required
Water
in the containment
Infiltration Gallery
treatment technology
Recovery,
Treatment,
and Disposal
and treatment of
ground water
POTW
NPDES General Permit
2) Numerous primary
treatment alternatives
are available to ensure
contaminant removal
2) Effluent disposal method must
be determined
•
3) Significant O&M required to ensure
permit compliance
3) Additional polishing
treatment processes
can be added
In Situ
Viable in situ
Not Applicable
1) No groundwater
1) Explosion proof equipment required
Air Sparging
with Soil
technology in the
removal of
disposal required
with soil vacuum extraction system
Vacuum
volatile organic
2) Possibility for reduced
2) Proper soil conditions required for
Extraction
compounds
O&M costs
effective treatment
3) Can cause off site migration of
contaminant plume
Front Royal Project 0011-92-048R
1 J9298-8.slf

Table 9. BTEX Removal Efficiency Data From Ongoing Front Royal Project
Sampling Total BTEX Concentration Volatile Organic Removal
Date • (141) Efficiency (%)
Influent Effluent
11/02/90, 3,070.0 3.0 99.9
11/21/90 987.0 11.0 98.9
12/21/90 183.0 BQL 100.0
01/09/91 • 3,809.0 3.0 99.9
02/07/91 3,342.0 BQL 100.0
03/19/91 1,786.0 3.0 99.8
04/05/91 6,069.0 BQL 100.0
05/01/91 26,780.0 504.0 98.1
06/14/91 8,279.0 95.3 98.9
07/11/91 3,694.0 25.4 99.3
08/05/91 8,400.0 26.5 99.7
09/17/91 2,805.0 26.5 99.1
10/04/91 3,572.0 26.8 99.3
11/14/91 6,950.0 7.3 99.9
12/17/91 13,390.0 98.9 99.3
01/09/92 12,380.0 224.3 98.2
02/11/92 5,133.0 25.5 99.5
03/19/92 5,400.0 25.3 99.5
04/08/92 2,320.0 26.8 98.8
05/08/92 5,471.0 31.0 99.4
06/10/92 4,539.0 11.5 99.8
07/07/92 3,451.0 14.1 99.6
08/07/92 1,900.0 12.0 99.4
09/04/92 3,091.0 13.3 99.6
11/04/92 3,327.0 1.0 100.0
11/23/92 10,570.0 100.0 99.1
12/22/92 3,772.0 51.0 98.7
01/20/93 3,803.0 38.0 99.0
02/17/93 2,614.0 22.0 99.2
03/19/93 3,135.0 43.0 98.6
04/27/93 4,919.0 34.0 99.3
07/23/93 2,015.0 6.0 99.7
10/21/93 154.0 4.0 97.4
01/21/94 1,960.0 23.0 98.8
04/20/94 3,958.0 10.0 99.7
BQL - Below Quantization Limit of 1.0 micrograms per liter (µg/1)
* Data collected from ongoing Front Royal project in Greensboro, North Carolina
Front Royal Project 0011-92-48R
119248-9.s!f

1
1
Appendix A
Soil Boring Logs
1

BORING LOG
BORING NO: SB-1
PAGE 1 OF 1
LOCATION: TOCStore Number 530-31
DATE COMPLhthD: 0620/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): 13.0'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
TIC ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
0.0
0.5
NA
asphalt and gravel
0.5
1.0
CL
Red -brown silty clay
1.0
1.5
_
1.5
2.0
2.0
2.5
SM
4
Red -brown silty sand
0.6
2.5
3.0
4
3.0
3.5
.
3
3.5
4.0
4
4.0
4.5
SM
5
SS-1A
White and gray layered silty sand,
1.7
4.5
5.0
4
with remnant structures, loose to
5.0
5.5
4
medium dense, weathered bedrock
5.5
6.0
4
6.0
6.5
5
0.0
6.5
7.0
5
7.0
7.5
5
7.5
8.0
7
8.0
8.5
5
0.4
8.5
9.0
5
9.0
9.5
3
9.5
I0.0
2
-
10.0
10.5
3
1.0
10.5
11.0
3
_
11.0
11.5
5
11.5
12.0
50/3"
12.0
12.5
I8
White and gray layered silty sand,
0.4
12.5
13.0
6
with remnant structures, dense to
auger refusal
27
very dense, weathered bedrock
502"
terminated boring at 13.0'
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350 •
CARY, NC 27519-4350
Forms/0161

• BORING LOG
BORING NO: SB-2
PAGE 1 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/20/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): 23.5'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (Fr): NA
GROUND ELEV (MSL): NA
T/C ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASSIFICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
0.0
0.5
NA
concrete and gravel
0.5
1.0
SM
Red -brown silty sand
1.0
1.5
-
1.5
2.0
2.0
2.5
Rock
50/2"
Weathered granitic rock
0.0
2.5
3.0
-
3.0
3.5
CL
7
Red -brown silty clay with fine gravel
03
3.5
4.0
3
sized weathered, friable granitic
4.0
4.5
4
inclusions
4.5
5.0
7
5.0
5.5
SM
50/2"
White, gray and tan layered silty
1.4
5.5
6.0
sand with remnant structures, loose
6.0
6.5
to medium dense, weathered bedrock
6.5
7.0
10
SS-2A
0.5
7.0
7.5
10
7.5
8.0
6
8.0
8.5
4
8.5
9.0
6
0.0
9.0
9.5
16
.
9.5
10.0
16
_
10.0
10.5
12
_
10.5
11.0
6
0.0
11.0
11.5
10
11.5
12.0
8
_
12.0
12.5
8
12.5
13.0
8
0.0
13.0
13.5
20
_
13.5
14.0
•
16
14.0
14.5
7
14.5
15.0
6
SS-2A
8.4
EQUIPMENT:
FRONT ROYAL
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

BORING LOG
BORING NO: SB-2 PAGE 2 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06,20/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): 23.5'
GROUNDWATER'DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
TIC ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(10.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
15.0
15.5
NA
SM
6
White and gray layered silty sand,
15.5
16.0
6
with remnant structures, dense to
16.0
16.5
15
very dense, weathered bedrock
16.5
17.0
5016"
3.8
17.0
17.5
17.5
18.0
18.0
18.5
18
7.5
18.5
19.0
15
19.0
19.5
17
19.5
20.0
8
20.0
20.5
5
6.2
20.5
21.0
4
21.0
21.5
5
21.5
i 22.0
18
•
22.0
22.5
21
9.0
22.5
23.0
18
23.0
23.5
bedrock
50/4"
terminated boring at 23.5' BGS
EQUIPMENT: .
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

BORING LOG
BORING NO: SB-3
PAGE 1 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/20/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): 24.0'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (1 1): NA
GROUND ELEV (MSL): NA
T/C ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
0.0
0.5
NA
gravel
0.5
I.0
CL
Brown silty clay
1.0
1.5
I.5
2.0
2.0
2.5
SM
4
White and gray weathered granitic
6.8
2.5
3.0
3
rock, silty sand with some quartz
3.0
3.5
CL
3
fragments
3.5
4.0
4
4.0
4.5
4
SS-3A
7.6
4.5
5.0
3
5.0
5.5
SM
2
5.5
6.0
3
6.0
6.5
3
7.5
6.5
7.0
4
7.0
7.5
4
7.5
8.0
3
8.0
8.5
3
7.2
8.5
9.0
3
9.0
9.5
3
9.5
10.0
3
10.0
10.5
4
6.0
10.5
11.0
4
11.0
11.5
5
11.5
12.0
7
12.0
12.5
6
SS-3B
.
10.0
12.5
13.0
6
I3.0
13.5
5
13.5
14.0
8
14.0
14.5
9
8.4
14.5
15.0
13
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES. INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

BORING LOG
BORING NO: SB-3
PAGE 2 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/20/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): 24.0'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
T/C ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
15.0
15.5
NA
SM
9
White and gray weathered granitic
15.5
16.0
6
rock, silty sand with some quartz
16.0
16.5
8
fragments
7,2
16.5
17.0
10
17.0
17.5
12
17.5
18.0
7
18.0
18.5
4
6.5
18.5
19.0
7
19.0
19.5
10
19.5
20.0
9
20.0
20.5
34
4.8
20.5
21.0
50/4"
21.0
21.5
21.5
22.0
22.0
22.5
17
7.7
22.5
23.0
50/2"
23.0
23.5
23.0
24.0•
Bedrock
terminated boring at 24.0' BGS
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES. INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

BORING LOG
BORING NO: SB-4
PAGE 1 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/20/94
. PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): I6.0'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
T/C ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(PT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
0.0
0.5
NA
Asphalt
0.5
1.0
SM
Brown silty sand
1.0
1.5
1.5
2.0
2.0
2.5
SM
3
White and gray weathered granitic
5.I
2.5
3.0
3
rock, silty sand with some quartz
3.0
3.5
4
fragments
3.5
4.0
4
4.0
4.5
3
3.6
4.5
5.0
4
5.0
5.5
3
5.5
6.0
4
6.0
6.5
4
SS-4A
5.1
6.5
7.0
6
•
7.0
7.5
4
7.5
8.0
6
8.0
8.5
6
3.4
8.5
9.0
5
9.0
9.5
4
9.5
10.0
5
-
10.0
10.5
5
2.6
10.5
11.0
4
11.0
11.5
6
11.5
12.0
4
12.0
12.5
3
SS-4B
4.3
12.5
13.0
9
13.0
13.5
20
_
13.5
14.0
18
14.0
14.5
9
3.7
14.5
15.0
20
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES. INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

BORING LOG
BORING NO: SB-4
PAGE 2 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/20/94
PROJECT NO: 001 i-94-048R
TOTAL DEPTH (FT): 16.0'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
T/C ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
15.0
15.5
NA
SM
50/4.5"
White and gray weathered granitic
15.5
16.0
Bedrock
rock, silty sand with some quartz
16.0
16.5
50/1"
fragments
terminated boring at 16.0' BGS
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES,
INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

0
1
u
t
e
BORING LOG
BORING NO: SB-6 PAGE 1 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/21/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): 18.5'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
TIC ELEV MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASSIFICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(FPM)
0.0
0.5
NA
Concrete
0.5
1.0
SM
Brown silty sand
1.0
1.5
1.5
2.0
2.0
2.5
3
9.3
2.5
3.0
3
3.0
3.5
3
3.5
4,0
5
9.4
4.0
4.5
SM
5
SS-6A
White and gray weathered granitic
4.5
5.0
5
rock, silty sand with some quartz
5.0
5.5
5
fragments
5.5
6.0
5
9.0
6.0
6.5
3
6.5
7.0
5
7.0
7.5
6
7.5
8.0
6 .
8.4
8.0
8.5
6
8.5
9.0
4
9.0
9.5
3
9.5
10.0
Bedrock (granitic)
3
10.0
10.5
6
10.5
11.0
6
11.0
11.5
10
11.5
12.0
10
12.0
I2.5
9
12.5
13.0
7
_ 8.0
13.0
13.5
50/3"
I3.5
14.0
14.0
14.5
23
SS-6B
I4.5
15.0
39
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 275194350

0
1
A
t
0
0
e
1
A
1
1
a
0
1
BORING LOG
BORING NO: SB-6
PAGE 2 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/21/94
PROJECT NO: 0011.94-048R •
TOTAL DEPTH (FT): 18.5'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
T/C ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
15.0
15.5
NA
Bedrock (granitic)
28
White and gray weathered granitic
15.5
16.0
18
rock, silty sand with some quartz
16.0
16.5
9
fragments
0.2
16.5
17.0
19
17.0
17.5
31
17.5
18.0
50/1.5"
18.0
18.5
Bedrock
50/2"
terminated boring at 24.0' BGS
1.9
•
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES. INC.
NOTES: SI - Screen Interval
BUS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

a
A
1
9
t
e
1
t
1
1
e
0
0
1
r
BORING LOG
BORING NO: SB-7 PAGE 1 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/21/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): 24.0'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
T/C ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
0.0
0.5
NA
Asphalt
0.5
1.0
CL
Red silty clay
1.0
1.5
1.5
2:0
2.0
2.5
3
5.0
2.5
3,0
5
3.0
3.5
5
3.5
4.0
5
4.0
4.5
SM
5
Brown and gray silty sand, weathered
5.1
4.5
5.0
5
bedrock, with quartz fragments
5.0
5.5
3
5.5
6.0
3
6.0
6.5
3
5.3
6.5
7.0
3
7.0
7.5
5
7.5
8.0
3
8.0
8.5
4
5.3
8.5
9.0
4
9.0
9.5
6
9.5
10.0
6
10.0
10.5
5
5.6
10.5
11.0
9
1I.0
11.5
8
11.5
12.0
6
12.0
12.5
3
SS-7
6.3
12.5
13.0
4
13.0
13.5
6
13.5
14.0
6
_
14.0
14.5
6
5:3
14.5
15.0
5
_
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
NOTES: SI - Screen Interval
BUS - Below Ground Surface ,
P.O. BOX 4350
CARY, NC 27519-4350

t
0
0
r
B
0
1
e
r
u
t
0
0
t
BORING LOG
BORING NO: SB-7
PAGE 2 OF 2
LOCATION: TOC Store Number 530-31
• DATE COMPLETED: 06/21/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): 24.0'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
TIC ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
15.0
15.5
NA
SM
5
Brown and gray silty sand, weathered
15.5
16.0
6
bedrock, with quartz fragments
16.0
16.5
2
6.2
16.5
17.0
3
17.0
17.5
8
17.5
18.0
8
18.0
18.5
8
6.5
18.5
19.0
8
19.0
19.5
9
19.5
20.0
10
20.0
20.5
4
8.0
20.5
21.0
6
21.0
21.5
9
21.5
22.0
9
22.0
22.5
9
8.1
22.5
23.0
10
23.0
23.5
12
23.0
24.0
13
terminated boring at 24.0' BGS
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

0
0
t
i
0
e
1
t
v
1
t
n
t
t
BORING LOG
BORING NO: SB-8
PAGE 1 OF 2 •
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/21/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): 24.0'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
T/C ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
AID
(PPM)
0.0
0.5
NA
Asphalt
0.5
1.0
CL
Brown silty clay
1.0
1.5
1.5
2.0
2.0
2.5
CL
2
Red silty clay
3.8
2.5
3.0
1
3.0
3.5
2
3.5
4.0
2
4.0
4.5
SM
5
Brown and gray silty sand, weathered
4.0
4.5
5.0
5
bedrock, with quartz fragments
5.0
5.5
4
5.5
6.0
4
6.0
6.5
3
SS-8A
42
6.5
7.0
9
7.0
7.5
7
7.5
8.0
8
8.0
8.5
3
4.2
8.5
9.0
5
9.0
9.5
6
9.5
10.0
7
_
10.0
10.5
6
4.7
10.5
11.0
4
11.0
11.5
4
_
11.5
12.0
5
12.0
12.5
6
4.8
12.5
13.0
7
13.0
13.5
8
13.5
14.0
10
14.0
14.5
7
5.6
14.5
15.0
8
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

u
B
1
1
0
e
A
t
a
0
0
1
t
BORING LOG
BORING NO: SB-8
PAGE 2 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06R1/94
PROJECT NO: 0011-94-043R
TOTAL DEPTH (FT): 24.0'
GROUNDWATER DEPTH (F'1): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
TIC ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(1.1)
ELEV
(MSL)
UNIFIED CLASSIFICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
15.0
15.5
NA
SM
8
Brown and gray silty sand, weathered
15.5
16.0
7
bedrock, with quartz fragments
16.0
16.5
8
11.0
16.5
17.0
7
17.0
17.5
7
17.5
18.0
8
18.0
18.5
8
8.7
13.5
19.0
9
19.0
19.5
7
_
19.5
20.0
6
20.0
20.5
5-
SS-8B
13.4
20.5
21.0
6
21.0
21.5
7
21.5
22.0
8
22.0
22.5
8
12.4
22.5
23.0
10
23.0
23.5
8
23.0
24.0
. 12
terminated boring at 24.0' BGS
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
•
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

0
0
e
i
A
11
e
B
0
A
0
1
r
BORING LOG
BORING NO: SB-9
PAGE 1 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/21/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): I8.0'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
TIC ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
0.0
0.5
NA
Grass and topsoil
0.5
I.0
CL
Red silty clay
1.0
1.5
_
1.5
2.0
2.0
2.5
SM
6
Brown and gray silty sand, weathered
3.5
2.5
3.0
5
bedrock, with quartz fragments
3.0
3.5
4
3.5
4.0
4
4.0
4.5
4
SS-9A
4.0
4.5
5.0
4
5.0
5.5
6
5.5
6.0
8
6.0
6.5
5
3.9
6.5
7.0
3
7.0
7.5
4
7.5
8.0
3
8.0
8.5
4
3.4 J
8.5
9.0
3
9.0
9.5
4
9.5
10.0
5
10.0
10.5
8
3.8
10.5
11.0
7
11.0
11.5
6
11.5
12.0
6
12.0
12.5
12
Brown and gray silty sand, weathered
22.0
12.5
13.0
8
bedrock, with quartz fragments,
13.0
13.5
9
petroleum odor
13.5
14.0
9
I4.0
14.5
7
140
14.5
15.0
8
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

1
BORING LOG
BORING NO: SB-9
PAGE 2 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/21/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): 18.0'
GROUNDWATER DEPTH (I^ 1): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
TIC ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
15.0
15.5
NA
SM
8
Brown and gray silty sand, weathered
15.5
16.0
9
bedrock, with quartz fragments,
16.0
16.5
10
petroleum odor
240
16.5
17.0
.
10
17.0
17.5
9
17.5
18.0
•
9
terminated boring at 18.0' BGS
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

t
e
B
i
0
0
d
0
t
BORING LOG
BORING NO:SBIO
PAGE 1 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/22/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): 20.5'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
TIC ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
0.0
0.5
NA
Asphalt
0.5
1.0
SM
Brown silty sand
1.0
1.5
1.5
2.0
2.0
2.5
5
0.6
2.5
3.0
5
3.0
3.5
SM
5
Gray and white, weathered granitic
3.5
4.0
6
bedrock, silty sand, with quartz
4.0
4.5
SM
6
SS-10A
fragments
0.3
4.5
5.0
4
5.0
5.5
4
5.5
6.0
4
6.0
6.5
4
SS-8A
0.1
6.5
7.0
6
7.0
7.5
5
7.5
8.0
5
8.0
8.5
6
0.1
8.5
9.0
4
9.0
9.5
5
9.5
10.0
5
.
10.0
10.5
5
0.0
10.5
11.0
3
11.0
11.5
5
11.5
12.0
7
12.0
12.5
5
0.1
12.5
13.0
6
13.0
13.5
6
13.5
14.0
8
14.0
14.5
5
0.0
14.5
15.0
7
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

BORING LOG j
BORING NO:SB10
PAGE 2 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/22/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): 20.5'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
TIC ELEV (MSL): NA -
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(/0,5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
15,0
15.5
NA
SM
8
Gray and white, weathered granitic
15.5
16.0
8
bedrock, silty sand, with quartz
16.0
16.5
12
SS-10B
fragments
0.0
r
16.5
17.0
, 9
17.0
17.5
9
17.5
18.0
6
-
18.0
18.5
6
0.0
18.5
19.0
7
19.0
19.5
10
19.5
20.0
50/3.5"
20.0
20.5
Bedrock
50/2"
terminated boring at 20.5' BGS
0.0
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350 ,
CARY, NC 275I9-4350

BORING LOG
BORING NO:SB11
PAGE 1 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/22/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): 24.0'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
T/C ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA.
DEPTH •
(FT)
ELEV
(MSL)
UNIFIED CLASSIFICATION
DESCRIPTION
BLW CMT
(/0.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
0.0
0.5
NA
Asphalt
0.5
1.0
CL
Red silty clay, micaceous
1.0
1.5
1.5
2.0
2.0
2.5
4
6.5
2.5
3.0
5
3.0
3.5
8
3.5
4.0
9
4.0
4.5
9
6.2
4.5
5.0
11
5.0
5.5
12
5.5
6.0
13
6.0
6.5
12
6.0
6.5
7.0
11
7.0
7.5
11
7.5
8.0
12
8.0
8.5
12
SS-11A
6.3
8.5
9.0
12
9.0
9.5
I8
_
9.5
010.0
13
.
10.0
10.5
CL
6
Red and yellow mottled, silty,
5.8
10.5
11.0
9
micaceous clay
I1.0
11.5
9
11.5
12.0
10
12.0
12.5
11
5.0
I2.5
13.0
12
13.0
13.5
11
13.5
14.0
II
14.0
14.5
CL
13
Red and yellow mottled, silty,
5.3
I4.5
15.0
12
micaceous clay, w/ granite .fragments
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES. INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

t
t
m
1
BORING LOG
BORING NO:SBI T
PAGE 2 OF 2
LOCATION: TOC Store Number 530-31
DATE COMP LI.iED: 06/22194
PROJECT NO: 0011-94-048R
TOTAL DEPTH (FT): 24.0'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
TIC ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASSIFICATION
DESCRIPTION
BLW CMT
(10.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
15.0
15.5
NA
CL
12
Red and yellow mottled, silty,
15.5
16.0
10
micaceous clay, with granite
16.0
16.5
8
fragments
6.3
16.5
17.0
7
17.0
17.5
9
17.5
18.0
8
18.0
18.5
7
6.0
18.5
19.0
6
19.0
19.5
6
19.5
20.0
7
20.0
20.5
7
SS-IIB
7.2
20.5
21.0
5
21.0
21.5
5
21.5
22.0
8
22.0
22.5
9
8.0
22.5
23.0
7
23.0
23.5
7
23.0
24.0
7
terminated boring at 24.0' BGS
EQUIPMENT:
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

BORING LOG
BORING NO:SB12
PAGE 1 OF 2
LOCATION: TOC Store Number 530-31
DATE COMPLETED: 06/22/94
PROJECT NO: 0011-94-048R
TOTAL DEPTH (F 1): 24.0'
GROUNDWATER DEPTH (FT): NA
SCREEN DEPTH (FT): NA
GROUND ELEV (MSL): NA
TIC ELEV (MSL): NA
SCREEN INTERVAL (MSL): NA
DEPTH
(FT)
ELEV
(MSL)
UNIFIED CLASS FICATION
DESCRIPTION
BLW CMT
(10.5 FT)
SAMPLE
NO.
SI
COMMENTS
PID
(PPM)
0.0
0.5
NA
Asphalt
0.5
1.0
CL
Red silty clay, micaceous
1.0
1.5
1.5
2.0
2.0
2.5
CL
6
Red and yellow mottled, silty,
5.4
2.5
3.0
7
micaceous clay, remnant layering
3.0
3.5
9
3.5
4.0
10
4.0
4.5
CL
13
Red and yellow mottled, silty,
ie
5.6
4.5
5.0
16
micaceous clay, with remnant
5.0
5.5
17
- layering and quartz fragments
5.5
6.0
20
.
6.0
6.5
18
5.5
6.5
7.0
17
7.0
7.5
20
7.5
8.0
I7
8.0
8.5
7
5.8
` 8.5
9.0
8
9.0
9.5
l I
,
9.5
10.0
10
_
10.0
10.5
12
SS-12A
6.3
10.5
I1.0
•
13
11.0
11.5
13
11.5
12.0
14
12.0
12.5
13
6.1
12.5
13.0
13
13.0
13.5
I 1
13.5
14.0
I1
14.0
14.5
5
6.4
14.5
15.0
6
EQUIPMENT:
.
FRONT ROYAL
ENVIRONMENTAL SERVICES, INC.
NOTES: SI - Screen Interval
BGS - Below Ground Surface
P.O. BOX 4350
CARY, NC 27519-4350

Appendix B
Soil Laboratory Analytical Report and Chain of Custody

[TE
Chemical & Environmental Technology, Inc.
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
DGERTON ENVIRONMENTAL
.0. BOX 4350
CARY, NC 27519-
ttn: BARRY KROLL
P. O. BOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
-u011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
AMPLE NUMBER- 87993 SAMPLE ID- SS-1A
ATE SAMPLED- 06/20/94
DATE RECEIVED- 06/23/94 SAMPLER- TROY R. WILSON
IME RECEIVED- 0800 DELIVERED BY- TROY WILSON
Page 1 of 1
-r,NALY S I S
PERCENT SOLIDS
[IGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
PROJECT NAME : 0011-92-048
SAMPLE MATRIX- SO
TIME SAMPLED- 1130
RECEIVED BY- THL
SAMPLE PREP ANALYSIS
METHOD DATE BY DATE BY RESULT UNITS
2540G 06/22/94 DLM
3550 06/28/94 SDL 07/01/94 JBR
5030 06/29/94 JBR
79.7 NA
2.63 mg/kg
< 0.10 mg/kg
QL = Practical Quantitation Limit
"Results followed by the letter J are estimated concentrations.
N11 results for soil and sludge samples are reported on a dry weight basis as required
y the NC DEM Laboratory Certification Section. Wet Weight Concentration =
dry weight conc.)(percerrt solids)/100.
UNKNOWN HYDROCARBON CONTAMINANT QUANTITATED AS FUEL OIL NO. 2
LABORATORY DIRECTOR
PQL
1.0
0.10

Chemical & Environmental Technology, Inc.
C E SERVICES
ENVIRONMENTAL LABORATORY AND CONSULTING S R
JOHN M. OGLE
PRESIDENT
MGERTON ENVIRONMENTAL
?.0. BOX 4350
CARY, NC 27519-
Ittn : BARRY KROLL
P. O. BOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
)011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
;AMPLE NUMBER- 87994
)ATE SAMPLED- 06/20/94
DATE RECEIVED-- 06/23/94
PIME RECEIVED- 0800
Page 1 of 1
ANALYSIS
SAMPLE ID- SS-2A
SAMPLER- TROY R. WILSON
DELIVERED BY- TROY WILSON
?ERCENT SOLIDS
iIGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
PROJECT NAME : 0011-92-048
SAMPLE PREP ANALYSIS
METHOD DATE BY DATE BY
SAMPLE MATRIX- SO
TIME SAMPLED- 1340
RECEIVED BY- THL
2540G 06/22/94 DLM
3550 06/28/94 SDL 07/01/94 JBR
5030 06/29/94 JBR
RESULT UNITS
87.6 NA
< 1.0 mg/kg
< 0.10 mg/kg
SQL = Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
, All results for soil and sludge samples are reported on a dry weight basis
y the NC DEM Laboratory Certification Section. Wet Weight Concentration =
{dry weight conc.)(percent solids)/100.
LABORATORY DIRECTOR
as required
xteiszAt
PQL
1.0
0.10

rE
Chemical & Environmental Technology, Inc.
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
DGERTON ENVIRONMENTAL
.0. BOX 4350
CARY, NC 27519-
,ttn: BARRY KROLL
P. O. BOX 1229B
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
v011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
11 AMPLE NUMBER- 87995 SAMPLE ID- SS--2B
ATE SAMPLED- 06/20/94
pATE RECEIVED- 06/23/94 SAMPLER- TROY R. WILSON
IME RECEIVED- 0800 DELIVERED BY- TROY WILSON
Page 1 of 1
ANALYSIS
'ERCENT SOLIDS
IIGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
PROJECT NAME : 0011-92-048
SAMPLE PREP ANALYSIS
METHOD DATE BY DATE BY
SAMPLE MATRIX- 50
TIME SAMPLED- 1345
RECEIVED BY- THL
2540G 06/22/94 DLM
3550 06/28/94 SDL 07/01/94 JBR
5030 06/29/94 JBR
SQL = Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
^ill results for soil and sludge samples are reported on a dry weight
)y the NC DEM Laboratory Certification Section. Wet Weight Concentration
;dry weight conc.)(percent solids)/100.
RESULT UNITS
84.7 NA
< 1.0 mg/kg
< 0.10 mg/kg
LABORATORY DIRECTOR k L/ .i1/'
basis as required
PQL
1.0
0.10

Chemical & Environmental Technology, Inc.
ETE SERVICES
ENVIRONMENTAL LABORATORY AND CONSULTING
JOHN M. OGLE
PRESIDENT
MGERTON ENVIRONMENTAL
'.0. BOX 4350
CARY, NC 27519-
-Ittn: BARRY KROLL
P. O. BOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
FAx [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
J011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
ILAMPLE NUMBER- 87996 SAMPLE ID- SS-3A
ATE SAMPLED- 06/20/94
DATE RECEIVED- 06/23/94 SAMPLER- TROY R. WILSON
,'IME RECEIVED- 0800 DELIVERED BY- TROY WILSON
Page 1 of 1
iALY S I S
•IERCENT SOLIDS
IGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
PROJECT NAME : 0011-92-048
SAMPLE PREP ANALYSIS
METHOD DATE BY DATE BY
SAMPLE MATRIX- SO
TIME SAMPLED- 1740
RECEIVED BY- THL
2540G 06/22/94 DLM
3550 06/28/94 SDL 07/01/94 JBR
5030 06/29/94 JBR
RESULT UNITS
79.4 NA
1.51 mg/kg
< 0.10 mg/kg
SQL = Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
-All results for soil and sludge samples are reported on a dry weight basis as required
?y the NC DEM Laboratory Certification Section. Wet Weight Concentration =
,'dry weight conc.)(percent solids)/100.
UNKNOWN HYDROCARBON CONTAMINANT QUANTITATED AS FUEL OIL NO. 2.
LABORATORY DIRECTOR
PQL
1.0
0.10

rE
Chemical & Environmental Technology, Inc.
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
DGERTON ENVIRONMENTAL
.O. BOX 4350
CARY, NC 27519-
-vttn: BARRY KROLL
P. O. BOX 12298
RESEARCH TRIANGLE PARK N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
J011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
MMPLE NUMBER- 87997
ATE SAMPLED- 06/20/94
DATE RECEIVED- 06/23/94
'IME RECEIVED- 0800
Page 1 of 1
SAMPLE ID- SS-3B
SAMPLER- TROY R. WILSON
DELIVERED BY- TROY WILSON
INALYSIS
ERCENT SOLIDS
IIGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
PROJECT NAME : 0011-92-048
METHOD
SAMPLE MATRIX- SO
TIME SAMPLED- 1740
RECEIVED BY- THL
SAMPLE PREP ANALYSIS
DATE BY DATE BY
2540G 06/22/94 DLM
3550 06/28/94 SDL 07/01/94 JBR
5030 06/29/94 JBR
RESULT UNITS
83.1 NA
6.37 mg/kg
< 0.10 mg/kg
SQL = Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
1�11 results for soil and sludge samples are reported on a dry weight basis as required
)y the NC DEM Laboratory Certification Section. Wet Weight Concentration
dry weight conc.)(percent solids)/100.
UNKNOWN HYDROCARBON CONTAMINANT QUANTITATED AS FUEL OIL NO. 2.
LABORATORY DIRECTOR 44.r.�/
PQL
1.0
0.10

FINAL REPORT OF ANALYSES
ANALYSIS METHOD
ERCENT SOLIDS
IIGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
rE
Chemical & Environmental Technology, Inc.
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
1
;DGERTON ENVIRONMENTAL
1.0. BOX 4350
CARY, NC 27519-
P►ttn: BARRY KROLL
J011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
P. O. BOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
FAX [phone]
REPORT DATE: 07/13/94
ItAMPLE NUMBER- 87998 SAMPLE ID- SS-4A
ATE SAMPLED- 06/20/94
DATE RECEIVED- 06/23/94 SAMPLER- TROY R. WILSON
'IME RECEIVED- 0800 DELIVERED BY- TROY WILSON
Page 1 of 1 PROJECT NAME : 0011-92-048
SAMPLE PREP ANALYSIS
DATE BY DATE BY
SAMPLE MATRIX- SO
TIME SAMPLED- 1615
RECEIVED BY- THL
2540G 06/22/94 DLM
3550 06/28/94 SDL 07/01/94 JBR
5030 06/29/94 JBR
JQL = Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
''‘11 results for soil and sludge samples are reported
y the NC DEM Laboratory Certification Section. Wet Weight Concentration =
(dry weight conc.)(percent solids)/100.
UNKNOWN HYDROCARBON CONTAMINANT QUANTITATED AS FUEL OIL NO. 2.
RESULT UNITS
80.1 NA
1.07 mg/kg
< 0.10 mg/kg
LABORATORY DIRECTOR
on a dry weight
basis as required
PQL
1.0
0.10

I
Chemical & Environmental Technology, Inc.
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
--EDGERTON ENVIRONMENTAL
1 P.O. BOX 4350
°-CARP, NC 27519-
:-Attn: BARRY KROLL
10011--92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
P.O. BOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
(SAMPLE NUMBER- 87999 SAMPLE ID- SS-4B
DATE SAMPLED- 06/20/94
DATE RECEIVED- 06/23/94 SAMPLER- TROY R. WILSON
rIME RECEIVED- 0800 DELIVERED BY- TROY WILSON
Page 1 of 1. PROJECT NAME : 0011-92-048
s
SAMPLE PREP ANALYSIS
SAMPLE MATRIX- SO
TIME SAMPLED- 1820
RECEIVED BY- THL
ANALYSIS METHOD DATE BY DATE BY RESULT UNITS PQL
PERCENT SOLIDS 2540G 06/22/94 DLM 85.7 NA
HIGH FRACTION HYDROCARBON 3550 06/28/94 SDL 07/01/94 JBR 1.17 mg/kg
LOW FRACTION HYDROCARBON 5030 06/29/94 JBR < 0.10 mg/kg
PQL -= Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
_-.All results for soil and sludge samples are reported on a dry weight basis as required
by the NC DEM Laboratory Certification Section. Wet Weight Concentration =
(dry weight conc.)(percent solids)/100.
UNKNOWN HYDROCARBON CONTAMINANT QUANTITATED AS FUEL oXL NO. 2.
LABORATORY DIRECTOR
1.0
0.10

1
JOHN M. OGLE
PRESIDENT
Chemical & Environmental Technology, Inc.
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
:DGERTON ENVIRONMENTAL
?.0. BOX 4350
CARY, NC 27519-
ttn: BARRY KROLL
lir
0011-92-048 TOC - HICKORY
P. O. BOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
6/20-6/22/94 SAMPLING
SAMPLE NUMBER- 88000 SAMPLE ID- SS-5A
_)ATE SAMPLED- 06/21/94
DATE RECEIVED- 06/23/94 SAMPLER- TROY R. WILSON
TIME RECEIVED- 0800 DELIVERED BY- TROY WILSON
Page 1 of 1
ANALYSIS
ERCENT SOLIDS
IGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
PROJECT NAME : 0011-92-048
,SAMPLE MATRIX- SO
TIME SAMPLED- 1200
RECEIVED BY- THL
SAMPLE PREP ANALYSIS
METHOD DATE BY DATE BY
2540G 06/22/94 DLM
3550 06/28/94 SDL 07/01/94 JBR
5030 07/04/94 JBR
RESULT UNITS
87.6 NA
< 1.0 mg/kg
< 0.10 mg/kg
)QL = Practical Quantitation Limit
ttesults followed by the letter J are estimated concentrations.
-7111 results for soil and sludge samples are reported on a dry weight basis as
)y the NC DEM Laboratory Certification Section. Wet Weight Concentration =
dry weight conc.)(percent solids)/100.
ti
LABORATORY DIRECT0P 14.4(..4
required
PQL
1.0
0.10

Chemical & Environmental Technology, Inc.
ETE
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
DGERTON ENVIRONMENTAL
.0. BOX 4350
CARY, NC 27519-
ttn: BARRY KROLL
011-92-048 TOC - HICKORY
P, O. BOX 12298
RESEARCH TRIANGLE PARK. N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
6/20-6/22/94 SAMPLING
AMPLE NUMBER- 88001 SAMPLE ID- SS-5B
ATE SAMPLED- 06/21/94
DATE RECEIVED- 06/23/94 SAMPLER- TROY R. WILSON
IME RECEIVED- 0800 DELIVERED BY- TROY WILSON
Page 1 of 1
NALYSIS
ERCENT SOLIDS
IGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
PROJECT NAME : 0011-92-048
SAMPLE PREP ANALYSIS
METHOD DATE BY DATE BY
SAMPLE MATRIX- SO
TIME SAMPLED- 1205
RECEIVED BY- THL
2540G 06/22/94 DLM
3550 06/28/94 SDL 07/01/94 JBR
5030 07/04/94 JBR
RESULT UNITS
93.2 NA
< 1.0 mg/kg
< 0.10 mg/kg
QL = Practical Quantitation Limit
nesults followed by the letter J are estimated concentrations.
11,11 results for soil and sludge samples are reported on a dry weight basis
7 the NC DEM Laboratory Certification Section. Wet Weight Concentration =
' ?dry weight conc.)(percent solids)/100.
LABORATORY DIRECTOR
as required
PQL
1.0
0.10

Chemical & Environmental Technology, Inc.
ETE
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
DGERTON ENVIRONMENTAL
.0. BOX 4350
CARY, NC 27519-
'1ttn: BARRY KROLL
P. O. BOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
1011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
;AMPLE NUMBER- 88002 SAMPLE ID- SS-6A
LATE SAMPLED- 06/21/94
DATE RECEIVED-- 06/23/94 SAMPLER- TROY R. WILSON
'IME RECEIVED- 0800 DELIVERED BY- TROY WILSON
rage 1 of 1
LNALYSIS
ERCENT SOLIDS
UGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
PROJECT NAME : 0011-92-048
SAMPLE PREP ANALYSIS
METHOD DATE BY DATE BY
SAMPLE MATRIX- SO
TIME SAMPLED- 1210
RECEIVED BY- THL
2540G 06/22/94 DLM
3550 06/28/94 SDL 07/01/94 JBR
5030 07/04/94 JBR
'QL = Practical Quantitation Limit
.results followed by the letter J are estimated concentrations.
All results for soil and sludge samples are reported on a dry weight
)y the NC DEM Laboratory Certification Section. Wet Weight Concentration
!dry weight conc.)(percent solids)/100.
RESULT UNITS
85.1 NA
< 1.0 mg/kg
< 0.10 mg/kg
LABORATORY DIRECTOR r-A/W[
basis as required
PQL
1.0
0.10

T
Chemical & Environmental Technology, Inc.
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
;DGERTON ENVIRONMENTAL
'.0. BOX 4350
CARY, NC 27519-
, kttn: BARRY KROLL
P. O. BOX 12298
RESEARCH TRIANGLE PARK. N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
-0011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
;AMPLE NUMBER- 88003 SAMPLE ID- SS-6B
)ATE SAMPLED- 06/21/94
DATE RECEIVED- 06/23/94 SAMPLER- TROY R. WILSON
LIME RECEIVED- 0800 DELIVERED BY- TROY WILSON
Page 1 of 1 PROJECT NAME : 0011-92-048
-ANALYSIS
PERCENT SOLIDS
SIGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
SAMPLE MATRIX- SO
TIME SAMPLED- 1215
RECEIVED BY- THL
SAMPLE PREP ANALYSIS
METHOD DATE BY DATE BY
2540G 06/22/94 DLM
3550 06/28/94 SDL 07/01/94 JBR
5030 07/04/94 JBR
RESULT UNITS
87.5 NA
< 1.0 mg/kg
< 0.10 mg/kg
PQL = Practical Quantitation Limit
-Results followed by the letter J are estimated concentrations.
All results for soil and sludge samples are reported on a dry weight basis as required
by the NC DEM Laboratory Certification Section. Wet Weight Concentration
(dry weight conc.)(percent solids)/100.
LABORATORY DIRECTO
PQL
1.0
0.10

ETE
Chemical & Environmental Technology, Inc.
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
'sDGERTON ENVIRONMENTAL
?.0. BOX 4350
CARY, NC 27519-
'!ttn: BARRY KROLL
P. O. BOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
.)011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
;AMPLE NUMBER- 88004 SAMPLE ID- SS-7
)ATE SAMPLED- 06/21/94
DATE RECEIVED- 06/23/94 SAMPLER- TROY R. WILSON
LIME RECEIVED- 0800 DELIVERED BY- TROY WILSON
Page 1 of 1 PROJECT NAME : 0011-92-048
kNALYSIs
?ERCENT SOLIDS
IIGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
SAMPLE PREP ANALYSIS
METHOD DATE BY DATE BY
SAMPLE MATRIX- SO
TIME SAMPLED- 1605
RECEIVED BY- THL
2540G 06/22/94 DLM
3550 06/28/94 SDL 07/01/94 JBR
5030 07/04/94 JBR
RESULT UNITS
80.8 NA
1.85 mg/kg
0.10 mg/kg
?QL = Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
'ill results for soil and sludge samples are reported on a dry weight basis as required
ry the NC DEM Laboratory Certification Section. Wet Weight Concentration =
;dry weight conc.)(percent solids)/100.
UNKNOWN HYDROCARBON CONTAMINANT QUANTITATED AS FUEL OIL NO. 2.
LABORATORY DIRECTOR JA--
,�
PQL
1.0
0.10

rE
Chemical & Environmental Technology, Inc.
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
DGERTON ENVIRONMENTAL
r.0. BOX 4350
CARY, NC 27519-
',ttn: BARRY KROLL
P. O. BOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
AMPLE NUMBER- 88005 SAMPLE ID- SS-8A
ATE SAMPLED- 06/21/94
DATE RECEIVED- 06/23/94 SAMPLER- TROY R. WILSON
IME RECEIVED- 0800 DELIVERED BY- TROY WILSON
Page 1 of 1
__,NALYSIS
'ERCENT SOLIDS
IIGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
PROJECT NAME : 0011-92-048
SAMPLE MATRIX- SO
TIME SAMPLED- 1730
RECEIVED BY- THL
SAMPLE PREP ANALYSIS
METHOD DATE BY DATE BY
2540G 06/22/94 DLM
3550 06/30/94 SDL 07/05/94 JBR
5030 06/30/94 JBR
RESULT UNITS
83.6 NA
16.8 mg/kg
< 0.10 mg/kg
•QL = Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
N11 results for soil and sludge samples are reported on a dry weight basis as required
)y the NC DEM Laboratory Certification Section. Wet Weight Concentration =
;dry weight conc.)(percent solids)/100.
UNKNOWN HYDROCARBON CONTAMINANT QUANTITATED AS KEROSENE.
LABORATORY DIRECTOR
PQL
1.0
0.10

rE
Chemical & Environmental Technology, Inc.
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
;DGERTON ENVIRONMENTAL
).0. BOX 4350
CARY, NC 27519-
\ttn: BARRY KROLL
P. O. BOX 12298
RESEARCH TRIANGLE PARK. N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
J011-92--048 TOC - HICKORY 6/20-6/22/94 SAMPLING
SAMPLE NUMBER- 88006 SAMPLE ID- SS-8B
)ATE SAMPLED- 06/21/94
DATE RECEIVED- 06/23/94 SAMPLER- TROY R. WILSON
LIME RECEIVED- 0800 DELIVERED BY- TROY WILSON
Page 1 of 1 PROJECT NAME : 0011-92-048
.ANALYSIS
?ERCENT SOLIDS
iIGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
SAMPLE PREP ANALYSIS
METHOD DATE BY DATE BY
SAMPLE MATRIX- SO
TIME SAMPLED- 1745
RECEIVED BY- THL
2540G 06/22/94 DLM
3550 06/30/94 SDL 07/05/94 JBR
5030 06/30/94 JBR
RESULT UNITS
80.6 NA
59.9 mg/kg
< 0.10 mg/kg
?QL = Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
'111 results for soil and sludge samples are reported on a dry weight basis as required
)y the NC DEM Laboratory Certification Section. Wet Weight Concentration
dry weight conc.)(percent solids)/100.
UNKNOWN HYDROCARBON CONTAMINANT QUANTITATED AS KEROSENE.
1
LABORATORY DIRECTOR
PQL
1.0
0.10

ETE
Chemical & Environmental Technology, Inc.
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
MGERTON ENVIRONMENTAL
_ 1.0. BOX 4350
CARY, NC 27519-
ttn: BARRY KROLL
P. O. BOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
Fax [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
0011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
MMPLE NUMBER- 88007
.ATE SAMPLED- 06/21/94
DATE RECEIVED- 06/23/94
'IME RECEIVED- 0800
Page 1 of 1
ANALYSIS
SAMPLE ID-- SS-9A
SAMPLER- TROY R. WILSON
DELIVERED BY- TROY WILSON
)ERCENT SOLIDS
iIGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
PROJECT NAME : 0011-92-048
METHOD
SAMPLE PREP ANALYSIS
DATE BY DATE BY
SAMPLE MATRIX- SO
TIME SAMPLED- 1805
RECEIVED BY- THL
2540G 06/22/94 DLM
3550 06/30/94 SDL 07/05/94 JBR
5030 06/30/94 JBR
RESULT UNITS
84.5 NA
< 1.0 mg/kg
< 0.10 mg/kg
SQL = Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
111 results for soil and sludge samples are reported on a dry weight basis
,y the NC DEM Laboratory Certification Section. Wet Weight Concentration =
(dry weight conc.)(percent solids)/100.
LABORATORY DIRECTOR r ijt 1 ..
as required
PQL
1.0
0.10

cTE
Chemical & Environmental Technology, Inc.
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
;DGERTON ENVIRONMENTAL
).0. BOX 4350
CARY, NC 27519-
lttn: BARRY KROLL
1
P. O. BOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
PAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
J011-92--048 TOC - HICKORY 6/20-6/22/94 SAMPLING
;AMPLE NUMBER- 88008
,ATE SAMPLED- 06/21/94
DATE RECEIVED- 06/23/94
PIME RECEIVED- 0800
Page 1 of 1
ANALYSIS
SAMPLE ID- SS-9B
SAMPLER- TROY R. WILSON
DELIVERED BY- TROY WILSON
?ERCENT SOLIDS
IIGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
PROJECT NAME : 0011-92-048
METHOD
2540G
3550
5030
SAMPLE PREP ANALYSIS
DATE BY DATE BY
SAMPLE MATRIX- SO
TIME SAMPLED- 1815
RECEIVED BY- THL
06/22/94 DLM
06/30/94 SDL 07/05/94 JBR
07/01/94 JBR
RESULT UNITS
83.4 NA
< 1.0 mg/kg
2710 mg/kg
PQL = Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
A11 results for soil and sludge samples are reported on a dry weight basis as required
by the NC DEM Laboratory Certification Section. Wet Weight Concentration =
(dry weight conc.)(percent solids)/100.
LOW FRACTION HYDROCARBON IDENTIFIED AS DEGRADED GASOLINE QUANTITATED AS GASOLINE
LABORATORY DIRECTOR
PQL
1.0
0.10

cTE
Chemical & Environmental Technology, Inc.
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
3DGERTON ENVIRONMENTAL
P.O. BOX 4350
CARY, NC 27519-
- Nttn: BARRY KROLL
P. O. SOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
J011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
SAMPLE NUMBER- 88009
DATE SAMPLED- 06/22/94
DATE RECEIVED- 06/23/94
-LIME RECEIVED- 0800
-Page 1 of 1
ANALYSIS
SAMPLE ID- SS-10A
SAMPLER- TROY R. WILSON
DELIVERED BY- TROY WILSON
PERCENT SOLIDS
EiIGH FRACTION HYDROCARBON
LOW FRACTION. HYDROCARBON
PROJECT NAME : 0011-92-048
SAMPLE PREP ANALYSIS
METHOD DATE 'BY DATE BY
SAMPLE MATRIX- SO
TIME SAMPLED- 1250
RECEIVED BY- THL
2540G 08/22/94 DLM
3550 06/30/94 SDL 07/05/94 JBR
5030' 06/30/94 JBR
RESULT UNITS
86.8 NA
< 1.0 mg/kg
< 0.10 mg/kg
PQL = Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
A11 results for soil and sludge samples are reported on a dry weight basis as
by the NC DEM Laboratory Certification Section. Wet Weight Concentration =
(dry weight conc.)(percent solids)/100.
LABORATORY DIRECTOR
required
PQL
1.0
0.10

T
Chemical & Environmental Technology, Inc.
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
:DGERTON ENVIRONMENTAL
3.0. BOX 4350
CARY, NC 27519-
kttn: BARRY KROLL
P. 0. HOX 12298
RESEARCH TRIANGLE PARK. N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
0011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
SAMPLE NUMBER- 88010 SAMPLE ID- SS-1OB
DATE SAMPLED- 06/22/94
DATE RECEIVED- 06/23/94 SAMPLER- TROY R. WILSON
L'IME RECEIVED- 0800 DELIVERED BY- TROY WILSON
Page 1 of 1
ANALYS I S
?ERCENT SOLIDS
SIGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
PROJECT NAME : 0011-92-048
SAMPLE MATRIX- SO
TIME SAMPLED- 1255
RECEIVED BY- THL
SAMPLE PREP ANALYSIS
METHOD DATE BY DATE BY
2540G 06/22/94 DLM
3550 07/05/94 SDL 07/06/94 JBR
5030 07/05/94 JBR
RESULT UNITS
88.2 NA
< 1.0 mg/kg
< 0.10 mg/kg
?QL = Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
A11 results for soil and sludge samples are reported on a dry weight basis
oy the NC DEM Laboratory Certification Section. Wet Weight Concentration =
(dry weight conc.)(percent solids)/100.
LABORATORY DIRECTOR
as required
PQL
1.0
0.10

Chemical & Environmental Technology, Inc.
C E SERVICES
ENVIRONMENTAL LABORATORY AND CONSULTING SER C
JOHN M. OGLE
PRESIDENT
MIGERTON ENVIRONMENTAL
'.0. BOX 4350
CARY, NC 27519-
kttn: BARRY KROLL
P. O. BOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
)011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
;AMPLE NUMBER -
)ATE SAMPLED- 0
DATE RECEIVED-
7IME RECEIVED -
Page 1 of 1
kNALYS I S
88011 SAMPLE ID- SS-11A
6/22/94.
06/23/94 SAMPLER- TROY R. WILSON
0800 DELIVERED BY- TROY WILSON
?ERCENT SOLIDS
IIGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
PROJECT NAME : 0011-92-048
SAMPLE PREP ANALYSIS
METHOD DATE BY DATE BY
SAMPLE MATRIX- SO
TIME SAMPLED- 1300
RECEIVED BY- THL
2540G 06/22/94 DLM
3550 07/05/94 SDL 07/06/94 JBR
5030 07/04/94 JBR
RESULT UNITS
81.1 NA
< 1.0 mg/kg
< 0.10 mg/kg
?QL = Practical Quantitation Limit
.tesults followed by the letter J are estimated concentrations.
All results for soil and sludge samples are reported on a dry weight basis asrequired
py the NC DEM Laboratory Certification Section. Wet Weight Concentration =
(dry weight conc.)(percent solids)/100.
LABORATORY DIRECTOR
PQL
1.0
0.10

Chemical & Environmental Technology, Inc.
Ert E
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
WGERTON ENVIRONMENTAL
?.O. BOX 4350
CARY, NC 27519-
Attn: BARRY KROLL
P. O. BOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
3011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
AMPLE NUMBER- 88012
ATE SAMPLED- 06/22/94
DATE RECEIVED- 06/23/94
LIME RECEIVED- 0800
Page 1 of 1
1NALYS I S
SAMPLE ID- SS-11B
SAMPLER- TROY R. WILSON
DELIVERED BY- TROY WILSON
?ERCENT SOLIDS
iIGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
PROJECT NAME : 0011-92-048
METHOD
SAMPLE PREP ANALYSIS
DATE BY DATE BY
SAMPLE MATRIX- SO
TIME SAMPLED- 1305
RECEIVED BY- THL
2540G 06/22/94 DLM
3550 07/05/94 SDL 07/06/94 JBR
5030 07/05/94 JBR
RESULT UNITS
77.0 NA
19.1 mg/kg
< 0.10 mg/kg
?QL = Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
1111 results for soil and sludge samples are reported on a dry weight basis as required
by the NC DEM Laboratory Certification Section. Wet Weight Concentration =
(dry weight conc.)(percent solids)/100.
UNIDENTIFIED HYDROCARBON CONTAMINANT QUANTITATED AS KEROSENE
LABORATORY DIRECTOR
4n4AL6
PQL
1.0
0.10

Chemical & Environmental Technology, Inc.
ETE SERVICES
ENVIRONMENTAL LABORATORY AND CONSULTING SER IC
JOHN M. OGLE
PRESIDENT
DGERTON ENVIRONMENTAL
1.0. BOX 4350
CARY, NC 27519-
ttn: BARRY KROLL
P. O. BOX 12298
RESEARCH TRIANGLE PARK. N. C. 27709
PHONE [phone]
FAX [phone]
FINAL REPORT OF ANALYSES
REPORT DATE: 07/13/94
0011-92-048 TOC - HICKORY 6/20-6/22/94 SAMPLING
;AMPLE NUMBER- 88013 SAMPLE ID- SS-12
JATE SAMPLED- 06/22/94
DATE RECEIVED- 06/23/94 SAMPLER- TROY R. WILSON
'IME RECEIVED- 0800 DELIVERED BY- TROY WILSON
Page 1 of 1 PROJECT NAME : 0011-92-048
ANALYSIS
?ERCENT SOLIDS
JIGH FRACTION HYDROCARBON
LOW FRACTION HYDROCARBON
SAMPLE MATRIX- SO
TIME SAMPLED- 1345
RECEIVED BY- THL
SAMPLE PREP ANALYSIS
METHOD DATE BY DATE BY
2540G 06/22/94 DLM
3550 07/05/94 SDL 07/06/94 JBR
5030 07/05/94 JBR
RESULT UNITS
80.6 NA
< 1.0 mg/kg
< 0.10 mg/kg
?QL = Practical Quantitation Limit
Results followed by the letter J are estimated concentrations.
-11 results for soil and sludge samples are reported on a dry weight basis as required
)y the NC DEM Laboratory Certification Section. Wet Weight Concentration =
(dry weight conc.)(percent solids)/100.
LABORATORY DIRECTOR
PQL
1.0
0.10

Chemical & Environmental Technology, Inc.
Elf
ENVIRONMENTAL LABORATORY AND CONSULTING SERVICES
JOHN M. OGLE
PRESIDENT
P. O. BOX 12298
RESEARCH TRIANGLE PARK, N. C. 27709
PHONE {919) 467-3090
FAX [phone]
METHOD REFERENCES
Federal Register, Vol. 56, 40 CFR Part 136.3, October 8, 1991
--Metals, Inorganics, and Organics for groundwater and wastewater
Federal Register, Vol. 56, 40 CFR Parts 141-143, January 30, 1991
--Metals, Inorganics, and Organics for drinking water
"Groundwater Section Guidelines for the Investigation and Remediation of Soils and
Groundwater", NCDEHNR, DEM, March 1993.
--High Fraction Hydrocarbon and Low Fraction Hydrocarbon for groundwater and soil
SW-846, Third Edition, November 1986
--Inorganics and Organics in soil or sludges. Metals in soil, sludge, or groundwater.
(Metals in groundwater are digested by Method 3030C, Standard Methods, 17th Edition)
40 CFR Part 261, Appendix 11 and III
--Toxic Characteristic Leaching Procedure
Standard Methods, 17th Edition, 1989
--Total and Fecal Coliform in wastewater, streams, and lakes

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Cary, NC 27511 (919)
467-3090
CLIENT NAME: E L e,r-ovy rvfvrre
ADDRESS:
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PROJECT NO: PROJECT NAME:
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REMARKS:
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Appendix C
Completed Site Sensitivity Evaluation Worksheets

Table 1
Site Sensitivity Evaluation (SSE)
Site Characteristics Evaluation (Step 1)
Grain Size`
Are relict structures,
sedimentary su-uctures,
and/or textures present
in the zone of
contamination
and underlying "soils"?
Distance from location of
deepest contaminated
soil** to water table.
Is the top of bedrock or
transmissive indurated
sediments located above
the water table?
Artificial conduits present
within the zone of
contamination.
Gravel
Sand
Silt
Clay
Present and intersecting the
water table.
Present but not intersecting
the water table.
None present.
0--5 feet
(C, D & E sites only)
5 - 10 feet
>10-40feet
> 40 feet
Yes
No
Present and' intersecting
the water table.
Present but not intersect-.
ing the water table.
Not present.
20
0
10
5
0
Total Site Characteristics Score:
Predominant grain size based on Unified Soil Classification System or U.S. DepL. of Sgriculture's
Soil Classification Method.
" (>3.0 ppm T. by Method 5030; >40 ppm TPFH by Method 3550: >250 ppm O&G by Method
9072)
3/1 pro3 16

Table 2
Site Sensitivity Evaluation a(SSE) Cleanupl Level
Initial Cleanup Level (Step 3)
(Step 2)
Total Site
Characteristics
Score
>150
121-150
91-120
61-90
31-60
0-30'
>150
121-150
91-120
61-90
31-60
0-30
Total Site
Characteristics
Score
>150
121-150
91-120
61-90
31-60
0-30.
Initial Cleanup
Level TPFH (ppm)
<_10
20
40
60
80
100
for
rocarbo
Category A & B
(Multiply initial
cleanup 'level by 1)
Category C & D
(Multiply initial
cleanup level by 2)
2 x `T "
Final
Cleanup
Level
PPrn
8O porn
Category E
[Multiply initial 3 x - pp:n
cleanup level by 3)
' k EPAtMethod
4 �f ydrocarhons
gh Bv1langE�o�.nt,H _t, � �,
ro°serve, I?ieseT;;`Vars:o,1'eraSp?n
Category A & B
(Multiply initial
cleanup level by 1)
Category C & D
(Multiply initial
cleanup level by 2)
Category E
(Multiply initial
cleanup level by 3)
Category A & B
(Multiply initial
cleanup level by 1)
Category C & D
(Multiply initial
cleanup level by 2)
Category E
(Multiply initial
cleanup level by 3)
See Site Category Descriptions. Table 3
3/10/93
17

e
Appendix D
Tank Tightness Certification
i

USTMAN INDUSTRIES, INC.
12265 West Bayaud Avenue, Suite 110
Lakewood, CO 80228
Phone: [phone]
CERTIFICATE OF TIGHTNESS
(Monthly Monitoring Test: Jan. - Dec., 1993)
EZ SERVE MANAGEMENT COMPANY
STATION 183503
The following tanks and associated piping have been Tested under the
USTMAN SIR(MM) System and are certified as tight:
TANK ID
01
02
03
04
05
PRODUCT
UNLEADED REGULAR
UNLEADED PLUS
UNLEADED PLUS
UNLEADED PREMIUM
KEROSENE
NOTE: Standard EPA Evaluafile at the main offic
Signature
Dan R. Cook
President
USTMAN Industries, Inc. • Underground Storage Tank Management
12265 W. Bayaud Ave. • Suite 110 • Lakewood, CO 80228 • 1-800-253-8054 • (303) 986-801 1 • FAX [phone]
Dedicated to protecting the environment

Appendix E
Remedial System Specifications

Remedial System Specifications
1 Ground Water Extraction System
1.1 Ground Water Extraction System
Three Solo Pump pneumatic pumps, P-1, P-2, and P-3, for 6" diameter PVC extraction wells,
RW-1, .RW-2, and RW-3 shall be provided and installed as shown on the construction
drawings. The system shall consist of three Solo Pump SP 2000 submersible stainless steel
recovery pumps capable of pumping up to 2 gpm, three Solo Pump SP 2000 well caps, and
manufacturer supplied, jacketed polyethylene downwell tubing. The pumps shall be placed in
the recovery wells and piped to the surface using polyethylene tubing with nylon tubing
couplings. The system shall be manufactured by QED Ground Water Specialists, or equal.
1.2 Ancillary Components to Ground Water Extraction System
A 5 HP air compressor, A-1(230 volts/3 phase/60 Hz); with 15.1 ACFM capacity at 100 psia;
80 gallon ASME coded air receiver; OSHA beltguard; air cooled aftercooler, electric automatic
drain; pressure regulator with gauge; automatic start and stop control; low oil level shutdown;
and a refrigerated air dryer, AD-1 (115 volts/single phase/60 Hz) at a capacity of 15 SCFM
with 33-39 degree Fahrenheit dewpoint including full cabinet enclosure and automatic drain
tap shall be provided and installed as shown on the construction drawings. The system shall
be manufactured by Ingersoll-Rand, or equal.
1.3 Ground Water Transfer Piping
Extracted ground water shall be pumped underground via a double contained pipe system. The
piping shall consist of polyethylene air supply and discharge lines located inside four inch
diameter Schedule 80 PVC piping.
2 Oil Water Separator
An oil/water separator, OW-1 shall be furnished and installed as shown on the construction
drawings. The recovered ground water will be treated by OW-1prior to being discharged to
the first air sparging tank, T-1. The separator shall be constructed of molded fiberglass
reinforced with a wood core and shall have a capacity of 5 gpm and shall be capable of
producing an effluent with a total free phase petroleum hydrocarbon concentration of less than
10 mg/l. The separator shall be as manufactured by Pan American Environmental, Inc., Model
OS-2, or equal.
Appendix A-1

2.1 Installation
OW-1 shall be placed on a metal frame to allow for the gravity drainage of free product and
ground water to their respective destinations.
3 Free Product Storage Drum
A 55 gallon capacity steel free product storage drum, T-3, with the necessary connections shall
be supplied to receive the free product separated from the ground water by OW-1, as shown
on the construction drawings. Free product will be stored in the drum until it is removed by
an approved contractor.
3.1 Installation
The free product storage drum shall be placed on reinforced concrete pad. The concrete pad
shall be constructed such that it will provide secondary containment in the event of a discharge
from the drum, as shown on the construction drawings. The drum shall be grounded in
accordance with UL, NFPA, and any other applicable requirements.
3.2 Ancillary Components
The free product storage drum shall be equipped with a high level shut off switch, LE-3. The
switch shall turn off the compressor, A-1, and close the solenoid valve SV-1, when triggered.
The switch shall be as manufactured by GEMS, Inc., Model Number A135230, or equal.
4 Air Sparging Tanks
Two 670 gallon (nominal capacity) cylindrical ground water storage tanks, T-1 and T-2, shall
be furnished and installed as shown on the construction drawings. Each tank shall- be a
centrifugally cast, flat bottom, open top fiberglass tank with UV inhibitor. The dimensions of
the tanks shall be 60" diameter by 60" height, with approximate wall thickness of 7/32". The
tanks shall be fabricated with a lip flange. The tanks shall be equipped with one inch blade
gusset flanged connections, located as shown on the drawings. The fiberglass tanks shall be
as manufactured by Raven Industries, Model B8644, or equal.
5 Air Distributor
Air distributor systems in the air sparging tanks shall be constructed and installed as shown on
the construction drawings. The air distributors shall be constructed of 2" Schedule 40 PVC
solvent weld pipe with 0.010 inch slotted well screen. The distributor shall have parallel
distribution lines as shown on the drawings.
Appendix A-2

6 Air Supply Blower System
6.1 Air Supply Blower
Two regenerative type air supply blowers for the air sparging system shall be furnished and
installed as shown on the construction drawings. The blowers shall be capable of providing
130 standard cubic feet per minute (scfm) of air at a pressure head of 60" of water. The
blowers shall be provided with 4.5 horsepower, 460 V, three phase direct coupled motors.
The blowers shall be as manufactured by Gast Inc., or equal.
6.2 Ancillary Components
1. Two high pressure shutoff switches, PSH-1 and PSH-2, shall be furnished and
installed on the outlet of each of the blowers and shall be coupled into the motor
circuit to give full overload protection. The initial setpoint for the pressure
switches shall be as shown on the construction drawings. The pressure switch
setting shall be field adjustable. The pressure switches shall be as manufactured
by Dwyer Instruments, Model Number 3150 or equal.
2. Two pressure relief valves, PRV-1 and PRV-2, shall be furnished and installed
at each of the blower discharges. The relief valves shall be set to operate below
the pressure switch setting. The set point shall be 1.0 psia lower than the
pressure switch settings. The relief valve settings shall be field adjustable. The
relief valve shall be as manufactured by the blower supplier.
3. Two inlet filters of adequate capacity for each of the blowers shall be furnished
and installed. The inlet filter shall be as manufactured by the blower supplier.
7 Vacuum Extraction System
A vacuum extraction system (VES) shall be constructed, furnished, and installed. as shown on
the construction drawings, including a regenerative type explosion -proof electric blower (B-3)
capable of applying a vacuum of approximately 60 inches of water at a flow rate of 160 scfm.
The blower shall be provided with a 5.5 horsepower, 460 V, three phase direct coupled motor.
The blower shall be as manufactured by Gast, Inc., or equal.
7.1 Ancillary Components
A low pressure shutoff switch, PSL-3, shall be furnished and installed on the
inlet of the blower and shall be coupled into the motor circuit to give full
overload protection. The initial setpoint for the pressure switch shall be as
shown on the construction drawings. The pressure switch setting shall be field
adjustable. The pressure switch shall be as manufactured by Dwyer Instruments,
Model Number 3150, or equal.
Appendix A-3

2. A vacuum relief valve, VRV-3, shall be furnished and installed at the blower
inlet. The relief valve shall be set to operate above the pressure switch setting.
The set point shall be 1.0 psia higher than the pressure switch setting. The relief
valve setting shall be field adjustable. The relief valve shall be as manufactured
by the VES blower supplier.
3. A 55 gallon air/water separator tank shall be furnished and installed as shown
on the drawings. The tank shall be equipped with an explosion -proof level
switch, LE-4, to shutdown B-3 when the tank becomes 2/3 full. This will
require a manual reset of B-3. The level switch shall be as manufactured by
GEMS, Inc., Model Number A135230, or equal.
4. An inlet filter of adequate capacity for the VES blower shall be furnished and
installed as shown on the construction drawings. The inlet filter shall be as
manufactured by the VES blower supplier or equal.
8 •Activated Carbon System
A particle strainer, a pressure relief valve, two 200 pound granular activated carbon adsorption
(GAC) vessels, four pressure gauges, and a transfer pump, P-4 shall be furnished and installed
as shown on the drawings. The particle strainer shall remove particulates greater than 50
microns in diameter from the process stream. The particle strainer shall be as manufactured
by Rosedale Inc., Model Number 6-31-1P-2-150-CBN-B, or equal. The pressure relief valve
shall be installed as shown on the construction drawings to prevent excessive pressure in the
carbon cylinders. The pressure relief valve shall be as manufactured by Plast-O-Matic Relief
Valves, Inc., Series RVT, or equal. The granular activated carbon in each adsorption vessel
shall be selected based upon its adsorption capacity for the organic contaminants present in the
process stream. The GAC vessels shall be installed in series with sample valves installed as
shown on the construction drawings. The pressure gauges shall be installed as shown on the
construction drawings. The GAC vessels- system shall be as manufactured by Barnebey and
Sutcliffe Corporation, or equal. The transfer pump, P-3, shall have a capacity of 15 GPM at
35 feet TDH, as manufactured by Aurora Inc., or equal.
9 Unit Control Panel - Ground Water Treatment & Vacuum Extraction Systems
The UCP shall incorporate all necessary switches, indicator lights, instrumentation, relays,
motor starters, fuses, circuit breakers, etc., to completely control the installed equipment and
require only the connection of the specified operating power, and any other required utility.
The voltage of the power supply to the UCP shall be 460 volts. The control panel shall
contain a 460-120 volt control power transformer to supply 120 volts to all control
components. All necessary equipment and process alarms and/or status switches shall be
provided with terminal strips for external monitoring as required. Terminal strips shall also
be provided for connection of all necessary remote sensors and control devices. Further, the
panel shall incorporate an electrical main disconnect of the lockable type that will shut off the
power supply to the panel. The panel shall be free standing, wall or pedestal mounted as
Appendix A-4

required for the system size and operation. The enclosure shall be NEMA 12 with quick
release stainless steel latches unless otherwise specified. The panel configuration shall be as
shown on the construction drawings.
10 Enclosures
Two. fully weatherized enclosures for 1) the air sparging blowers, carbon treatment system, air
compressor system, and all necessary electrical and instrumentation equipment as shown on the
construction drawings, and 2) the vacuum extraction system as shown on the construction
drawings, shall be furnished and installed as shown on the drawings. The enclosures shall be
constructed in complete compliance with the latest edition of the Uniform Building Code and
provide proper ventilation equipment to maintain the internal temperature of the enclosure
between 50° and 100°F. The enclosures shall have inside dimensions such that a minimum of
96 and 48 square feet of total floor space, respectively, is available.
Interior lighting shall be provided in the larger building as necessary for safety and
maintenance purposes. Access to the enclosures shall be a lockable doorway. The doorways,
when open, shall have a minimum clear opening of 3' 9" horizontal by 6' vertical. The
enclosures shall be manufactured by Leonard Buildings, or equal.
11 Miscellaneous
In addition to the specific items above, the following items shall be provided as shown on the
construction drawings.
A. Piping/Valves
1. All ground water piping, except the extracted ground water piping, shall be
Schedule 80 PVC pipe. The pipe shall conform with ASTM D 1785 standards
and all joints shall be of the solvent weld type. A1I piping above the frost line
and/or passing through the enclosure shall be completely insulated with 3/4"
closed cell insulation.
2. Ball valves shall be George Fisher Type 346 True Union valves, or equal. The
valves shall have PVC bodies and Viton o-rings. The valve seats shall made of
Teflon.
3. The check valves for liquid service shall be the ball check type, George Fisher
Type 360, or equal. The seat and seal material shall be made of Teflon.
Connections to pipe shall be the solvent weld type.
4. The air service butterfly valves shall be Asahi Type 75, or equal. The valves
shall have PVC bodies, stainless steel shafts, lever operators, PVC or PP discs,
and Viton seals and seats. Connection to the air piping shall be by ANSI flange.
Appendix A-5

5. Sample valves shall be 1/4" diameter 1/4 turn valves. The valves shall have
hose barb discharge ends and be located as shown in the construction drawings.
B. Instrumentation
1. Level Switches. Three float type level elements, LE-1 and LE-2 as shown on
the drawings, shall be provided. The elements shall be configured to provide
level data as described in this Specification. LE-1 and LE-2 shall be mercury
type flow at switches as manufactured by Putnam Water Guard, or equal.
2. Flow Measurement. Two (2) flow measurement elements, FE-1 and FE-2, as
shown on the drawings, shall be provided. The elements shall be of the impeller
type and accurate to within 5 percent of the measured flow, and shall be
mounted vertically as shown on the drawings. The flow elements shall include
five place resetable totalizers.
3. Pressure Indicators. Pressure indicators as shown on the drawings shall be
provided. These indicators shall be tube type equipped with minimum 2-inch
dials and glycerin filled for vibration protection.
4. Elapsed Time Meters. Elapsed time meters for all motors shall be provided and
installed. The meters shall totalize the run time of each motor in hours. The
meters shall measure to the nearest one -tenth of an hour and have five place
counters. The meters shall be installed on the UCP.
12 System Control Description
Chemically impacted ground water shall be extracted by the installed submersible pumps, P-I,
P-2, and P-3. The ground water shall be pumped from the extraction wells, RW-1, RW-2, and
RW-3, to the oil/water separator, OW-1. Prior to entering OW-1, the extracted ground -water
flow shall be measured and totalized by flow element FE-1. The extraction well pumps shall
be pneumatically operated. Control input to the pneumatic control lines shall be provided by
level element LE-1, located in T-1, and LE-3, located in T-3. LE-1 shall shutoff, by switch
LSH-1, air compressor, A-1, and close solenoid valve, SV-1, when the water level in T-1
reaches 48 inches. LE-3 shall shutoff, by LSH-3, air compressor, A-1, and close solenoid
valve, SV-1, when the free product level in T-3 reaches 30 inches. Air compressor, A-1, shall
be controlled by dedicated Hand -Off -Automatic hand switch, HS-1.
A transfer pump, P-4, shall pump the treated water from T-2 through the bag strainer, S-1, to
the activated carbon vessels. P-4 shall be activated by dedicated Hand -Off -Automatic switch,
HS-2. Control input to HS-2 shall be provided by level element LE-2, located in T-2. LE-2
shall activate, by switch LSH-2, pump P-4 when the water level reaches 38 inches in T-2.
LE-2 shall shutoff, by switch LSL-2, pump P-4 when the water level in T-2 drops to 12 inches
or less. Before passing through the activated carbon vessels, the treated water flow shall be
measured and totalized by flow element FE-2. Treated water is then discharged under a
general NPDES permit.
Appendix A-6

Air supply blowers, B-1 and B-2, shall be controlled by dedicated Hand -Off -Automatic hand
switches, HS-3 and HS-4, respectively. HS-3 receives control input from pressure element
PE-1. PE-1 shall measure the pressure of the air discharge from B-1 between the blower and
butterfly valve. PE-1 shall be provided with a high pressure switch, PSH-1. PSH-1 shall be
set at 4 psia and when energized shall shut down air compressor, A-1, as well as, close
solenoid valve, SV-1. HS-4 receives control input from pressure element PE-2. PE-2 shall
measure the pressure of the air discharge from B-2 between the blower and butterfly valve.
PE-2 shall be provided with a high pressure switch, PSH-2. PSH-2 shall be set a 4 psia and
when energized shall shut down air compressor, A-1, and close solenoid valve, SV-1. Both
of these shutdowns shall require a manual reset. When triggering shutdown, PSH-1 and PSH-2
shall also energize an alarm circuit, PAH-1 and PAH-2, respectively. These alarm circuits shall
include lighted status lights located on the front of the UCP.
VES blower B-3 shall be controlled by a dedicated Hand -Off -Automatic hand switch, HS-5.
HS-5 shall receive control input from pressure element PE-3. PE-3 shall measure the pressure
of the air from the extraction well to B-3. PE-3 shall be provided with a low pressure switch,
PSL-3. PSL-3 shall be set at 9 psia and when energized shall shutdown B-3. PSL-3 shutdown
of B-3 shall require a manual reset. When triggering shutdown, PSL-3 shall also energize an
alarm circuit, PAL-3, which includes a lighted status light located on the front of the UCP.
Control input to B-3 shall also be controlled by level element LE-4, located in air/water
separator, T-4. LE-4 shall shutoff, by LSH-4, B-3, when the water level in T-4 reaches 30
inches.
Appendix A-7

Appendix F
Sample Calculations

Edgerton
ENVIRONMENTAL SERVICES, INC.
JOB NO. CCU -92- ow SHEET / OF 1
JOB NAME TOG #r.Gko/•y
BY _5, rr e.?,42i DATE 6- /o - 9
CHECKED BY DATE
S DErF rh wOE ArR l WATER _ATIo R A2R SPARGzn1G 7AiKs
ExED
Baow Eg
7;.4,w •' 3.0 sor.,
,4 x fcow i 1,30 S .Fd1
Ai RA7so
I3Q_s.c._FM ('.'-/ @) 32 L/
�. 0 6 i'M
1. "DC75 .M:iL 7erFJJT:roi 7 i( A z S 4g . i& 7,4,044
GfCGTr D 14 3.0 GP 4
TAM IA JDLamF % 600G44-.
Liaragari. = 20014zNu rcS
3. o G?M

Front Royal
Environmental Services, Inc.
JOB NO. oo/I- 92- 04/8 k SHEET OF
JOB NAME TOG fl; C leotq
BY SSG r DATE l0/y194/
CHECKED BY DATE
FsT?MATL' YES cMLSsloAS AsFt") _ (.t'o?isT _CASE _aAr4
EA) g_
. T Gv-�!VL' __ -
W.y1.,BEA)2 4/
rPH
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�.- _
16.7.0
a__�, .-._.
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_ 2 6 , �
Gen2ene _ I �o cfM �1 a�•rr,_ 7q I. --� ILi Yom,,. I ' _� Z_`1_' l clo Li
_ G 11 ° gt _ /orv4 .___do — ..7 ? i3 a n•r1 gm,' __
SS . -- (I31- w_
Q_' VoluYY1GTCtC _t-JoW Gr.f., rr; _
.. _h - AbsoluAe 1Fressur.e.--'(Gkr.h) ; __L__[___•__. - _ .._._--' - — - _
_No - fiolecLlar W.e',.'nL L I01,010.1}__ 101_.a;, _ . „9Y_b11tp•,c, i. _.`` _ ,
IA • UAitie_sc&\ Gat . o.r?s nl_'(,.:'_302_ 4+3•'c�r„ I-lo_mol.°.4_)
_ - Abso LO:e T em p_. J. 61L °.&)_-_----_ _ _______ _ - ----•-----_- ,
G •. Concan ru` io^ .C_eprr,.'
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b L cM ULrn J+z9 '!.I �� r3pvm, �'�'IC)�r+,,,; -7-Y---'-'�.7G ���a
�,I, 1 en2enQ 1 ra I
- - - I _',hJ_3° _ ?D'.- ---d�' ,_g30z cf_3._`4"'1}bnior
241 . r.., 0140 ,,, , . _ — _ 3 3 ...,IVeic/
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af�tn2' J6_0cFm 1c, r, 24 11;,roP -
T? 1-1 (10.6 : )cc-+ 1 a � ,•, Zq _''l� �M�� 7 6
'Io - O.21 D 6, t,y
Lac{ '7302
Tor, L 5 r ssi6us ' 10;11

Appendix G
NPDES Permit Application

James G. Martin, Governor
William W. Cobey, Jr., Secretary
State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
A. Preston Howard, Jr., P.E.
Acting Director
NOTICE OF INTENT
National Pollutant Discharge Elimination System
Application for Coverage under General Permit NCG510000; Groundwater remediation projects
designed to treat petroleum contaminated groundwater.
1. Name, Address , location, and telephone number of facility requesting Permit.
A. Official Name:
B. Mailing Address:
(1)Street Address;
(2)City;
(3)State;
(4)Zip;
(5)County;
C. Location. (Attach map
(1)Street Address;
(2)City;
(3)State;
• (4)County;
Mr. Woodson McFarlin
TOC Retail, Inc.
2467 Windy Hill Rd.
Marietta
Georgia
30067
delineating general facility location)
TOC Store No. 503-31 910 First Avenue
Hickory
North Carolina
Catawba
D. Telephone Number; ( 404 ) 955 - 0627
2. Facility Contact:
A. Name;
B. Title;
C. Company Name;
D. Phone Number;
Mr. Woodson McFarlin
Environmental Supervisor
TOC Retail, Inc.
( 404 )955-06-27
3. Application type (check appropriate selection):
A. New or Proposed;
B. Existing; If previously permitted, provide permit number
and issue date
C. Modification;
(Describe the nature of the modification):
4. Description of discharge
A. Please state the number of separate discharge points.
1,[X]; 2,[]; 3,[]; 4,[]; ).
Page 1

B. Please describe the amount of wastewater being discharged per each separate discharge point:
1:5 , 00Cgallons per day (gpd) 2: (gpd) 3: (gpd) 4: (gpd)
C. Check the duration and frequency of the discharge, per each separate discharge point:
1. Continuous: X
2. Intermittent (please describe):
3. Seasonal (check month(s) the discharge occurs): January [ 1; February (]; March ( 1; April [ ],
May [ ];June (1; July (1; August [1; September (];October[ 1: November I l; December [ ].
4. How many days per week is there a discharge?(check the days the discharge occurs)
Monday (1, Tuesday (1, Wednesday (1, Thursday (],Friday (], Saturday (1, Sunday (1.
5. How much of the volume discharged is treated? (state in percent) lc Q %
D. Describe the type of wastewater being discharged per separate discharge point. Specify what is
being removed and products recovered. This includes a listing of any chemicals found in
detectable amounts with the maximum observed concentration reported. The summary of
analytical results containing this maximum value should also be submitted (i.e. the listing, not
the graphical scan). The most recent sample must be no older than one year previous to the date
of this application. The following volatile organic compounds should be included along with
any suspected fuel additive;
1. Benzene';
2. Toluene*;
3. EthyIbenzene*;
4. Xylene*;
5. Lead;
6. Methyl tert-butylether (MTBE);
7. Dibromoethane (EDB);
8. 1,2-dichloroethane;
9. Isopropyl ether;
10. Naphthalene;
11. Phenol;
*(An EPA approved method capable of detection levels to 1 ppb should be used to detect these
compounds).
E. Please check the appropriate type of treatment being used to treat the groundwater;
1. Oil/Water Separator; X
2. Air Stripper;
3. Diffused Aeration; X
4. Activated Carbon Absorption; X
5. Other(specify);
6. Separately, please describe in detail(size, volume,capacity, design flow through treatment,
etc.) each type of treatment that was checked in 1 through 5. Include, if any, the
manufacturer's information on each type of treatment. Also provide the removal efficiency of
each compound detected for the project, if known. Give design specifics (i.e. design volume of
each unit, materials used in air stripper, etc.). Existing treatment facilities should be
described in detail and design criteria or operational data should be provided(including
calculations) to ensure that the facility can comply with requirements of the General Permit.
Please include model and calculations used in determining the design requirements for the air
stripper.
7. What are the well sizes and how many exist
8. Please state the pump sizes and their location in relation to the treatment used in part 2.E.
9. Please explain what fail-safe measures, such as audible and visual alarms or automatic -
shutoff systems, are provided to ensure no system failures.
10. Is there an access to the effluent for sampling?( either an open pipe or a valve to obtain a
sample)
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NOTE: Construction of any wastewater treatment facilities require submission of three (3) sets of plans
and specifications along with their application. Design of treatment facilities must comply
with requirement 15A NCAC 2H .0138. If construction applies to the discharge, include the
three sets of plans and specifications with the application.
5. What is the nature of the business applying for this permit.
Geitner Branch
6. Name of receiving water or waters; and Henry Fork Classification:
(Attach a USGS topographical map with all discharge point(s) clearly marked)
7. Is the discharge directly to the receiving water?(Y,N) No, Discharge to Storm Sewer System
If no, state specifically the discharge point. Mark clearly the pathway to the potential receiving
waters on the site map. (This includes tracing the pathway of the storm sewer to its discharge
point, if a storm sewer is the only viable means of discharge.)
8. Please address possible non -discharge alternatives for the following options:
A. Connection to a Regional Sewer CoIIection System;
B. Subsurface Disposal;
C. Spray Irrigation;
9. I certify that I am familiar with the information contained in the application and that to the best of
my knowledge and belief such information is true, complete, and accurate.
Printed Narre of Person Signing Mr . Woodson McFar l in
Title Environmental Supervisor, TOC Rerail, Inc.
Date Application Signed
Signature of Applicant
NORTH CAROLINA GENERAL STATUTE 143-215.6 B (1) PRQVIDES THAT:
Any person who knowingly makes any false statement, representation, or certification in any
application, record, report, plan or other document filed or required to be maintained under Article 21 or
regulations of the Environmental Management Commission implementing that Article, or who falsifies,
tampers with or knowingly renders inaccurate any recording or monitoring device or method required to
be operated or maintained under Article 21 or regulations of the Environmental Management
Commission implementing that Article, shall be guilty of a misdemeanor punishable by a fine not to
exceed $10,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section 1001 provides
a punishment by a fine of not more than $10,000 or imprisonment not more than 5 years, or both, for a
similar offense.)
Notice of Intent must be accompanied by a check or money order for $400.00 made payable to the North
Carolina Department of Environment, Health, and Natural Resources. Mail three (3) copies of entire
package to:
Division of Environmental Management
NPDES Permits Group
Post Office Box 29535
Raleigh, North Carolina 27626-0535
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