NCG510415_Regional Office Historical File Pre 2018

Michael F. Easley, Governor
William G. Ross Jr, Secretary
Department of Enwonment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
November 13, 2002
Mr. Steve Belin
Circle K Stores, Inc.
5650 Breckenridge Park Drive, Suite 300
Tampa, FL 33610
Subject Rescission of NPDES General Permit
Permit Number NCG510415
Circle K Stores, Inc. #34185
Mecklenburg County
Dear Mr. Belin:
DEC 0 t 2002
Reference is made to the May 2, 2002 letter from ATC Associates requesting rescission of the
subject NPDES General Permit. The letter states that the groundwater pump and treat system that
required the permit has been converted to an air sparging system with no discharge of treated
groundwater to surface waters. In accordance with this request, NPDES General Permit NCG510415 is
rescinded, effective immediately.
Please be advised that this permit rescission is based wholly upon your statement that the
activities which would require general permit coverage at the site have ceased or been eliminated.
Division staff has not visited the site to obtain independent verification. Operating a treatment facility,
discharging wastewater or discharging specific types of stormwater to waters of the State without a valid
NPDES permit will subject the responsible party to a civil penalty of up to $25,000 per day. Enforcement
action will be certain for persons that have voluntarily relinquished permit coverage when, in fact,
continuing permit coverage was necessary. lf, in retrospect, you feel the site still requires permit
coverage, you should notify this office immediately. Furthermore, if in the future you wish to again
discharge to the State's surface waters, you must first apply for and receive a new NPDES permit.
Rescission of this discharge permit does not absolve you of any other responsibilities you may
have with regard to any groundwater contamination that may still exist at the subject site.
If you have questions about this matter, please contact Bob Sledge at [phone], extension
547 or the Water Quality staff in our Mooresville Regional Office at [phone],
Sincerely,
4
W. Klimek, P.E.
cc: Mooresville Regional Office w/attachm
Stormwater & General Permits Unit
Point Source Compliance — Bob Sledge - wiattachrnents
Central Files - wiattachments
Fran McPherson, DWQ Budget Office
Rick Kleinfelter: ATC Associates of North Carolina, PC
Customer Service Division of Water Quality 1617 Mail Service Center Ratei NC 27699-1617
1 800 623-7748 [phone] Fax: [phone]

6512 Falls of Neuse Road, Suite 100
Raleigh, North Carolina 27615
wwwatc-enviro.com
919.871.0999
Fax: [phone]
OF NORTH CAROLINA. P.C.
May 2, 2002
Mr. Bra erraet
North arolina Department of Environment and Natural Reso
Division of Water Quality - Stormwater and General Permits Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
RE: Termination of NPDES General Permit No. NCC510415
Circle K Store #34185 (Former BP Service Station #24180)
516 West Sugarcreek Road
Charlotte, North Carolina 28212
Facility ID No. 0-014398
NCDENR Incident No. 8121
ATC Project No. 45.75000.3185
Dear Mr. Bennett:
ATC Associates of North Carolina, P.C. (ATC), on behalf of Circle K Stores Inc., is
requesting the termination of NPDES General Permit No. NCG510415. In accordance
with the NCDENR Mooresville Regional Office, ATC has replaced the groundwater
pump and treat system with an air sparge/vapor extraction (ASVE) system. Therefore,
the system no longer discharges treated groundwater to the NPDES outfall on site.
For your reference, a copy of the invoice for the Annual Permit Fee is included as
Attachment 1. If you have any questions or require additional information, please
contact our office at [phone].
Sincerely,
ATC Associates of North Carolina, P.C.
Rick Kleiufelter, P.E.
Project Engineer
Attachment 1 - NPDES Permit Invoice
cc: Mr. Steve Belin, Circle K Stores Inc.
Mr. Steve Skinner, REALM Consultants, Inc.
Gabriel Araos, P.E.
Project Manager

NDUM,
Derrick . Harris
Environmental Hygienist
July 1.Z 200
SUBJECT: Info on on NPDES permit NC 10415 ;round at site at l6 Sugar Creek
Road,
To whommay it concern:
The NPDES site loetuted at 516 Sugar Creek load is currently owned by Circle 1 , The facility's
ground water remediation system is being operated by ATE. Associates of Raleigh, h, North
Carolina. In speaking with fir. Rick 1leintfelter of ATE`. it was brought to nay attention that the
system has not been operable since it was installed. On lane 29, 2000, l visited the site d did
not see any evidence that the systerrt was operating or discharging.
M Klei informed ntie that AT " associates plans to begin re -drilling the recovery wells
for the system on August l R 2000 and the repairs should be complete by August 21, 2000.
advised Mr. nfelt r to give MCDEP a call once the system was fully operational.

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
Mr. Steve Belin
Circle K Stores, Inc.
5650 Breckenridge Park Drive
Suite 300
Tampa, Florida 33610
Dear Mr. Belin:
NCDENR
September 3, 1999
Subject: Permit Modification -Name and
Ownership Change
Circle K Stores,Inc.
Permit No. NCG51.0415
(formerly BP Oil Company)
Mecklenburg County
In accordance with your request received August 24, 1999, the Division is forwarding the subject
permit.. The changes in this permit are only with regard to a name and an ownership. All other terms and
conditions in the original permit remain unchanged and in full effect. This permit modification is issued
pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of
Agreement between North Carolina and the U. S. Environmental Protection Agency dated December 6,
1983.
This permit does not affect the legal requirement to obtain other ,permits which may be required by
the Division of Water Quality or permits required by the Division of Land Resources, Coastal Area
Management Act, or any other Federal or Local government permit that may be required.
If you have any questions concerning this permit, please contact Ms. Vanessa Wiggins at telephone
number (91.9)733-5083, extension 520.
Sincerely,
ORIGINAL SIGNED P
WILLIARP
Kerr T. Stevens
cc: Central Files
Mooresville Regional Office, Water Quality Section
Stormwater and General Permits Unit
Point Source Compliance Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
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STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION F WATER QUALITY
GENERAL AL ER IT NO. N 1510000
CERTIFICATE OF COVERAGE No. NCG510415
TIC. DISCHARGE PETROLEUM CONTAMINATED GROUNDWATER AND SIMII AR
WASTEWATERS UNDR THE
NATIONAL AL POLLUTANT DISC'; RGE ELIMINATION SYSTE
In compliance with the provision of North Carolina Getter Statute 1 3-215.1, anther lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Conaaaaissione and the
Federal Water Pollution Control Act, as amended,
Circ
s hereby au zed to discharge (non -contact
Stores,
ac.
boiler hlovsdown, cot allaa tow°erc hlowdown, cooln
aociated with hydroelectric operations) water fro' ta a f aaeility located at
to receiving waters designated as
in accor nce with the effluent liri
and IV hereon,
This Cert
This Certifi
caste
K Stores, Inc.
Creek Road
Charlotte, NC
Mecklenburg County
Creek in the Catawba River Basin
monitoring requirements, and other co tdlti0
Coverage shall Iacconac effective Suptetxtber , 1999,
of Coverage shall ra main m effei
Signed this day September 3, 1999.
e duration of the General Permit
ORIGINAL SIGNED BY
WILLIAM LI a MILLS
r°th
Parts I,
Kerr T. Stevens, Director
Division of Water Quality
By Authority of the Envirtm;
nt
gea
ni

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr,, Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
July 29, 1998
Ms. Susan Sharp
BP Oil Company
2555 Westside Parkway, Suite 300
Alpharetta, Georgia 30004
Dear Ms. Sharp:
NCDENR
r7,
JUL 31 1996
RIR.L1
hacizi44 IS= IA
Subject: NPDES General Permit Application- —
Application Number NCG510415
Groundwater Remediation
Mecklenburg County
This correspondence is concerning the engineering proposal submitted for the subject project. The
Stormwater and General Permits Unit is responsible for evaluating the plans proposed in conjunction with
permitting under General Permit NCG510000. The staff has reviewed the submitted plans and
determined that additional information and/or revisions are necessary to complete the technical review
process. The following items will need to be addressed:
Particulate Filtration - To qualify for coverage under General Permit NCG510000, the treatment
system must include particulate filtration (Reference NCDENR Fact Sheet, NCG510000, 8/6/96).
The Division recommends particulate filtration upstream of tray air stripper units and activated
carbon units
2. Engineering Plans - Signed and sealed engineering plans and specifications, stamped "FINAL
DESIGN - Not Released For Construction" are required. (Reference NCDENR, DWQ Notice of
Intent Form, NCG510000, item 7a.)
The application will be returned to you if the application is not made complete within thirty (30) days,
You may resubmit the application when it is complete. You will be advised of any comments,
recommendations, questions or other information necessary for the review of the application. If you have
any questions or would like to discuss this project, please contact me at [phone], extension 545,
cc: Allan C. Seese, Environmental Remediatio
Mooresville Regional Office
Stormwater and General Pennits Unit Files
Central Files
Sincerely,
Darren M. England
Stormwater Engineer
anagement
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
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ART I- G
SOC PRIORITY PROJECT: Yes No 1
To: Perm itsand Engineering Un
Water Quality Section
At xton Darren M. England
Date: July S, 1998
WRDER STAFF REPORT iRECO.r ENDATION
County: Mecklenburg
Permit No. NCG510415
MR0 Neu 98-055
TION
Facility and Address: EP Oil Company
BP Service Station Mg. 24180
2555 Westside Parkway, Suite
Alpharetta, Georgia 30004
Date of lnvestigatien: 07-22- 5
Report Prepared By: G. T. Chen
Persons Contacted and Telephone Number
CRA Services, (704) 6676-0502.
00
Thomas , Fisher,
Direct ens to Site. From the intersection of North Tryon
Street (NC 49) and West Sugar Creek Road (SR 2480) in the
northern section of the City -of Charlotte, Mecklenburg County,
travel north on West: Sugar Creek Road approximately 0.5 mile
o the junction with Cinderella Road. SP Service Station No.
24180 is in the southeast corner of the junction.
Discharge Polnt(s).
atitude: 35° 15
for all discharge points
,ng
tide: 80° 4 7"' 42'
Attach a U. S . G. S . map extract and indacate treatment fac.1
site and discharge point on map.
USGS Quad No.. F 15 SE USOS Quad Name: Derita
, NC
Site size and expansion are consistent with application?
Yes.

Topography (relationship to flood plain included): The site
was graded level and paved, but the site is not in a flood
plain.
9. Location of nearest dwelling: Approximately 150 feet.
10. Receiving stream or affected surface waters: Little Sugar
Creek
a. Classification: C
b. River Basin and Subbasin No.: Catawba and 03-08-34
c. Describe receiving stream features and pertinent
downstream uses: The proposed discharge is to a storm
drain which enters Little Sugar Creek. Downstream users
are not known.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 0.0144 MGD
(Ultimate Design Capacity)
b. What is the current permitted capacity of the wastewater
treatment facility? N/A. Proposed facility.
c. Actual treatment capacity of the current facility
(current design capacity)? N/A. Proposed facility.
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years: None.
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: N/A.
Proposed facility.
Please provide a description of proposed wastewater
treatment facilities: The proposed groundwater
remediation facility will consist of an oil/water
separator, air stripper, two (2) 200 pound granular
activated carbon adsorption units in series, a totalizer
flow meter, four (4) recovery wells and a number of
monitoring wells.
NPDES Permit Staff Report
Version 10/92
Page 2

Possible toxic impacts to surface waters: Discharges of
this nature have been found to exhibit toxicity.
h. Pretreatment Program (POTWs only): N/An
2. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, Please specify
OW() Permit No.,: N/Au
Residuals Contractor: NO/Pm
Telephone No.: N/A.
b. Residuals Stabilization: PSRP: N/A-
RFRP: N/A,
Other: N/A.
c. Landfill: N/A.
d, Other disposal/utilization scheme (specify): Solids, if
any, will be properly disposed off site.
3. Treatment plant classification (attach completed rating
sheet): Class 1, see attached rating sheet.
4. SIC Code(s): 5541
Wastewater Code(s
Primary: 66 Secondary:
Main Treatment Unit Code: 56000
PART III - OTHER PERTINENT INFO
TION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved (municipals only)?
N/AD
2. Special monitoring or limitations (including toxicity)
requests: A toxicity limit may be necessary as similar
discharges have been found to be toxic.
3. Important SOO, JOU or Compliance Schedule dates: (please
indicate) N/A.
NPDES Permit Staff Report
Version 10/92
Page 3

Alternative Analysis Evaluation: Has the facility evaluated
all of the non -discharge options available. Please provide
regional perspective for each option evaluated.
Spray irrigation: insufficient suitable land area available
for a spray irrigation system.
Connection to Regional Sewer System: Charlotte -Mecklenburg
Utility Department does not accept treated groundwater to its
sanitary sewer system.
Subsurface: Insufficient suitable land area available for a
subsurface disposal system.
Other Disposal Options: Not evaluated.
5. Air Quality and/or Groundwater concerns or hazardous materials
utilized at this facility that may impact water quality, air
quality or groundwater? There are no known air quality, or
hazardous materials concerns. The proposed facility is to
treat groundwater that has been contaminated with gasoline.
6. Other Special Items: N/A.
PART IV -
TION AND RECOMMENDATIONS
HP Oil Company requests an NPDES General Discharge Permit for
the discharge of treated groundwater from a proposed ground -water
remediation facility. The groundwater at HP Service Station No.
24180 site has been contaminated with petroleum products due to
underground storage tank leakage. Recovered groundwater will be
treated via a proposed remediation facility prior to discharging to
a storm drain. The storm drain enters Little Sugar Creek,
classified as Class C waters.
Since the proposed facility is located in the Charlotte -
Mecklenburg area, the applicant may need approval from the
Mecklenburg County Department of Environmental Protection (MCDEP)
for possible air emissions.
Pending final review and concurrence by the SERG and MCDEP, it
NPDES Permit Staff Report
Version 10/92
Page 4

is redo ended that an NPDES General Perm
necessary) be issued to the applicant as requested.
Signature Report Prpar.r
er Quality Regional Sup rvi or
Date
NPDES PeRePort
Versa.. 2
Page 5
th toxicity limit

*3(XX ..�..5000 ...w6000 ,..AX6.) FEET
I RILCO. TER
VAL 3t'J FEET
SEA LEVEL
1L NIAP ACCURACYSTANDARDS
IRVEY, WASHINGTON. D. C. 20242
ND SYMBOLS IS AVAILABLE ON REQUEST
6 P,S,erv, e,
C C- . `Jn
ROAD CLASSIFICATION
Primary highway, Light dull road, hard er
hard surface improved surface T
Secondary high ray,
hard surtace _w_ unimproved read
Interstate Route U S Route State Route
DERITA, N. C.
Ne3515--_Wa0a5/7.5
1972
AMS 4854 IV SE —SERIES V842
Ro
SE

!IIPRATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name of Facility: 03/2 t d
Owner or Contact Person: 52, 5.4.E
Mailing Address:
County: MC cic./4,.
Telephone:
Present Classification:tl /4
NPDES Per. No. NC&
Rated by: r
Reviewed by:
ORC:
Check Classification(s):
Wastewater Classification:
New Facility
N©ndisc. Per. No.WQ
"r
Existing Facility
Health DeptPer No.
3 -/P9 Date:
Health Dept.
Regional Office
Central Office
Grade:
Spray Irrigation
III IV
Su
le One
Telephone:
Telephone:
Telephone:
Telephone:
Land ,ilpplication
Total Points.
In addition to the above
be rated using the point
SPRAY FFE3ATIONQJL CAroi
((Ieck al uets that apply)
1, w. .prelim teary treatment (definition no. 32 )
Ktcore
3 septic tanks
4.w pump tanks
5. Pups
6. sand titters
7.. grease trapAntc.aeptor
a, ol/water separators
e disinfection
10. - Chemical @dation for sae control
apray inigaticm at wastewater
classifications, pretreat ntsnt of wastewater In excess of these
rating system and will require an operator with an appropriate
ICATI©N/RESIDUALS CLASSIFICATION (Applies only to perrrOt holler)
and application d biosoiids, reeiduaki or contaminated soak on a designded site.
WASTJIAIA1ER TREATMENT FAOLITY a.ASS FC ATt:IM1I
components shell
dual certification.
The following systems she be assigned a Class 1 dassskation, im1 the flow la d a significant quantity or the technology is unusually
cough:, to require consideration by the Ccrrnmiesion on a cast-by-cassss basis: (Check r Appropriate)
1. OJWwater Separator Systems consisting only d physical separation, pumps and ;
2 Septic Tank/Sand Filter Systems consisting only of septic tans, diming apparatus, pumpe.sand titers, disinfection
and direct disdwrerge;
Lagoon Systems consisting only d preliminary treatment, lagoons, pumps, disinfection, necessary chemical treat mere ear
algae or nutrient control, old died discharge;
4. /. p Recych Systerrag
6, V Groundwater Rernedidion Systems consisting wily of ofllwster pwcrrnpntt, air -supping,
and a larostl;
6. Aquaauture operations with disc^hwge b surface ewers;
7, Wader Rent sludge handling and back -west} water treatment;
6, Seafood processing consisting of screening and d'eaposat.
fi Single -)army discharging systems, with the exception d Aerobic Treatment Urals, will be dais/Tied it permitted law July 1.
1963 or if upon knspedion by the Dwraion, t is found that the system b not being adequately operated or maintained. Such
systems will be notified of the dassJ ii�cation or redassrficstion by the Commission, in writing.
adsorption, disinfection

The following scale is used for rating wastewater treat
ra
appropriate points
ITEaa
(1) Ittt in° Pretre amws Units or lndurtrlal Pretnatnnrx Program (see
(2) DESGN FLOW OF PLANT IN 1pd (reel appticabis to no.mntantinaad
ender purification plants, tardy Wowed cyde syaaarna(e.. definition No. t
(4)(d) ar kerns (4)(d) and (11)(d))
o -
ac.00, - i0,o00,..,,_-_--.,
so.001
1t10.001-
©,cot), -_sees__ _
250.001 • 100,000..__. �.
000.001 - 1.000.000....-----
1.000.001 • L000,000.._,._
2.100.001 (and up) rate 1 pals* addabrtat let each 200,000 pid capacity uP to a atsxlraarrn d ^.._
Design Flow (god).
PREUAANARY UNITYPFCCEESSSSE.s (ewe deintion Na32)
(3)
(4)
(5)
(')
POINTS.
(a)
or
(b) Mechanical Sasses. static Scrams or Cormrnnk+© 0wises_
(c)
(1)
(g)
(h)
(l)
sr
kilech midst or Aerated Di Ramon' ____
Flow Inraiax*p Darks
or
Instrumented Flow Measurement.
Mae ra t tan..... _. _...�.._......_......,_.
Influent Flow Equalization -----
Gower or Olt Separators • Gtraritr
WC h a n i c a L.. _, ._ _. __-sees. •......»...... r _,
Dbeoir.d Ak Flotatlen --------
(I ) Pnec br*rrtbn ... _.�_�
pFiiARYTREATIATdJT l3+Kr CE*SS
(a) Septic Tank (see datWtbn No. 43).. ,..2
(b) WWI Tanis.
s_.._.4
._,2
.2
_2
,.,.2
..2
..2
(e)
Primly Ciarillers- SailingPonds Setting Tarrlo for incrgardc Nonionic Nta1.riatr (sludge harcai+�p ladles for emir
.west
Purifior cation ptsras. sand, grave!. atom and other miring operations secant recr*atronat activities such to pen ld mining)
6E074DARY TiitATllf
(a) Carbanaa.ors $age
(l) A.ratkx.Hiph Purity Oxygen diet
Dilh+ssd Ak System..._____. -sees,.,
Ifachantcal Air System (!iliac+, loafing or rotor)_
Separate Slings Rssaraltarn.M-_-.,_._» —
(i) Tricking Raw
High Rate._ ._...
standard Rale.._..,..
Packed Tower..
(11) Biological Aerated Filer or Mowed Bblagttal Fier
(Par) Aent.d lagoons,,... r-_
(v) Rattling Biological Contactors..
(vi) Band Flt.rs -intermitter*
Recirculating biological
--
OPstabization Lagoons...,,.:...•.._;_
(nil) taollor............... .�._.._._.._
(is) single aspe syat.m for °cobined cif boaatwcrrxs
elkelficatbn (..i de l nkbn No. 12XPoilts for ills
(5)(s)(1) through (5)(a)(0l).
Witting the extended aorstion promo (see d%*itian No
saltring other than the a turded aeration process...
(x) Nutrient adddiors se antlers B©© mmavat_
(el) Biological Culture ('Supper Bups`)eddltfon..-.-. -.
Nitropereato Magog
(!) AstWien - high Party oiyp.n *Tom
Mused Ak System,.... _ ..
MschanIcal Ak System
*worm Sludge Raserasbn... -..--
(11) Trickling Friar -High Rot - -
statdard Rata..
Packed Tower
(I) Qtobptcat Aerated Flier ar Aerated Biobgbal Fliers •10
(iv) Rotary Blalock l Cen lawors.,....-..,
(y) �serm imminent biological .
Cliror... «sees
TAAF3JT
Beds -
(b)
.T
?C said nirogera us mrwv$l by
in addiion to Iona
Y.
0'0
_10
a
4
—.A
20
i

State 9f North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Jaynes B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E,, Director
July 13, 1998
Ms. Susan Sharp
BP Oil Company.
2555 Westside Parkway, Suite 300
Alpharetta, Georgia 30004
NCDENR
Subject: NPDES General Permit A
Application Number NCG510415
Groundwater Remediation
Mecklenburg County
n
Dear Ms. Sharp:
The Division of Water Quality's Storrnwater and General Permits Unit hereby acknowledges
receipt of your Notice of Intent (Application Form) for coverage under NPDES Permit Number
NCG510000 on July 8, 1998. This NOI has been assigned the application number shown above.
Please be aware that the Division's regional office, copied below, must provide
recommendations from the Regional Supervisor 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.
You should be aware that the review process generally takes 90 days from the date your
complete submittal is received. This 90-day process may be extended if additional information is
required.
If you have any questions, please contact me at [phone], extension 545.
Sincerely,
Darren M. England
Environmental Engineer
cc: Allan C. Seese, Environmental Remediation IVlanagement
Mooresville Regional Office
Central. Files
Storrnwater and General Permits files
P.Q. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50%© recycled/ 10%o post -consumer paper

NORTH CAROLINA DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY 1 WATER QUALITY SECTION
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
NOTICE OF INTENT
National Pollutant Discharge Elimination System application for coverage under
General Permit NCG510000 and Authorization to Construct groundwater
remediation projects designed to treat petroleum -contaminated groundwater.
(Please print or type)
1. Mailing address of applicant;
Company Name BP Oil many
Owner Name BP C .1 CanPanY
Street Address 2555` Westide Parkway,
City Alpharetta
Telephone No. (770 l 641-2400
Suite 300
2. Location of facility producing discharge:
Facility Name 24180
Facility Contact man
Street Address
City
County
State G ZIP Code 30004
Telephone No. (770 .) . 641-2400
3. This NPDES Permit Application applies to which of the follow'ag,
New or Proposed * Modification ** Renewal***
Does the facility have an approved CAP? / NO Date approved: 03/09/98
**
If no, please contact the Regional Office Groundwater Section to determine the status of CAP.
approval and/or authorization toproceed if immediate remediation is recor�ntnended,
Alien Schiff : 95/B
Regional Office contact person: , p . Site Ranking (A - E)
Please describe the modification:
* * * Please specify existing permit number and original issue date:
4. Description of Discharge:
a. Volume of discharge (in GPD �_ 14 400_
b. The discharge is: I Continuous) Interrrtittent
If the discharge is intermittent, describe when the discharge will'occur:
c. Scurcetsl of conta
gasoline, diesel, solvents, etc.) Gasoline
General permits may be obtained for gasoline and/or heavy fuel contamination. An individual
permit will be issued for sites contaminated with other constituents such as solvents and pesticides.
Application for coverage under General Permit NCG 510040 and Authorization to Construct
Page 1 of 4

d. Is free product present? YES
If yes, a product storage tank and an oil/water separator are required. Free product is defined as
any measurable accumulation of 1/ll" or more in a well or floating on surface water.
e. Describe the discharge location (storm sewer, stream, etc.): Storm Sewer
f . Name of receiving water(s): Little Sugar Creek
g. A USGS topographic map (1:24000 scale), or copy of, identifying the exact discharge location
must be submitted with this application.
5. Treatment System Components:
Check all of the following that apply;
/Water Separator Air Strippe
Filters4 ©ther5
1 If an Oil/Water separator is present, please provide the f©ilowmg informatio
a. Rated flow capacity of the unit (in GPM): 10
b. Volume of unit 200 gallons
c. Free product disposal method: transfered to storage vessels for subset cent tll steal
2 If an air stripper is present, please provide the following
a. Rated flow capacity of the unit (in GPM): 10
b. Air provided for stripping (in C): 3
FM
3©:1
c. Air to Water ratio:
d. Number of trays (if applicable):
3 If carbon adsorption is present, please provide the following infix
a. Rated flow capacity of the unit(s) (in GPM): . 1 °
b. Number of carbon units and arrangement if number ex
2-series
e.,
par
el or in .series):.
c. P ads of carbon in a unit 200
d. Specify carbon breadrthrough time and haw it was estimated.
termined by carbon vendor.
70 days
4 If filters are used, please provide the following information:
a. Rated flow capacity of each unit(s) (in GPM): N/A
b. Arrangement of particulate filters within the system (i.e., in parallel or in series):
N/A.
c. Solids disposal method:
5 if other please specify: NIP)
Page 2ot4
Application for coverage under General Permit NCG51tlfl and Authorization to Construct

6. Alternatives to Direct Discharge:
Address the feasibility of implementing each of the following non -discharge alternatives:
a. Connection to a Regional Sewer Collection System - If the facility is existing and currently
discharges to a POTW, when will connection be terminated?
b. Subsurface disposal (including nitrification field, infiltration gallery, injection wells, etc.)
c. Spray irrigation
The alternatives to discharge analysis should include boring logs or other information indicating
that a subsurface system is neither feasible nor practical as well as written confirmation indicating
that connection to a POTW is not an option. It should also include a present value of costs analysis
as outlined in the Division's Guidance Tor the Evaluation of Wastewater Disposal Alternatives.
7. Additional Application Requirements:
For new or proposed discharges, the following inf�rrnatton mustbe included in triplicate with this
application or it will be returned as incomplete.
a Final plans for the treatment system. The plans must be signed and sealed by a North Carolina
registered Professional Engineer and stamped 'FINAL DESIGN - Not Released For Construction."
b. Final specifications for all major treatment system components including air stripper removal
efficiencies for parameters of concern. 1 ist proposed effluent concentrations. The specifications
must be signed and sealed by a North Carolina registered Professional Engineer and shall include
a narrative description of the treatment systexn to be constructed,
c. USGS topographic map (or a photocopied portion thereof) with discharge location clearly
indicated. If the discharge is not directly to a stream, the pathway to the receiving stream must
be clearly indicated. This includes tracing the pathway of a storm sewer to its discharge point.
d. Site map identifying the location of the monitoring wells, the recovery wells, and the treatment
system unit.
e. Analytical monitoring data which sufficiently characterizes the type and concentration of
contaminants on site. This includes a listing of any chemicals found with the maximum observed
concentrations reported. The data provided must be no older than one year prior to the date of
this application. At a minimum, the following parameters must be reported: Benzene, Toluene,
Ethylbenzene, Xylene, Lead, Naphthalene, Phenol, MTBE, 1,2-Dichloretharte, Fluorene and
Phenanthrene.
8. I certify that 1 am familiar with the information contained in this application and
that to the best of my knowledge and belief such information is true, complete,
and accurate. Printed Name of Person Signing -
Title 4Se/ti Teetei7 zeuie_Ai
O(YI
App ;cant)
North Carolina Gener. 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.0 Section 1001 provides
a punishment by a fine of not more than $10,000 or ixnprisortment not more than 5 years, or both, for a
similar offense.)
Date Signed)
Page 3 of 4

Application for coverage under General Permit NCG51
and Authorization to Construct
Design of treatment facilities must comply with requirements in 15A NCAC 211 .0138. See the
Division's guidance document Minimum design criteria for groundwater remethatiort systems.
Notice of intent must be accompanied by a check or money order for $$50.00 made payable to:
North Carolina Dep ent of Enviro ent, Health, and Natural Resources.
Mail three (3) copies of the entire package to
Division of Water Quality
NPDES Permits and Engineering Group
Post Office Box 29535
Raleigh, North Carolina 27626-0535
Final Checklist
This application will be retunted as incompleteunless all of the
following items have been included:
Check for $550
3 copies of this completed application and all supporting documents
3 sets of plans and specifications signed d sealed by a North Carolina PE.
Thorough responses to it 1-8 on this application
Alternatives analysis including present valtie of costs for all alternatives
The submission of this document does not guarantee
the issuance of . NPDES pe *t.
Page 4 of 4

ATTACHMENT A
RE ED1ATION SYSTEMPLANS SPIFICATI CIS

FINAL DESIGN — Not. Released For Construction
CONSTRUCTION SPECIFICATIONS
DUAL -PHASE VACUUM EXTRACTION SYSTEM
BP SERVICE STATION No. 24180
516 WEST SUGAR CREEK ROAD
CHARLOTTE, NORTH CAROLINA.
for
BP Oil Company
Alpharetta, Georgia
June 1998
Ref. 24854-01(002)
Hayman, PE, PG, CPG Date
C 1tcensed Engineer N©, 17956
CRA Services
CRA Engineering, Inc
4205-C Stuart Andrew Blvd
Charlotte, NC 26217
[phone] Office; [phone] Fax

TABLE OF CONTENTS
PAGE/NO.
SECTION 1 GENERAL SPECIFICATIONS
1.1 Design Specifications for Construction and Operation of the
Remediation System................................................................... 1
1,2 Drawings.......................................................... 1
1.3 Permits and Inspections.......................................................................... 1
1.4 Coordinating Work and Protecting Existing Facilities... 2
1.5 Underground Utilities...................................................................... 2
SECTION 2 RECOVERY WELLS
2.1 Well Locations and Clearance................................................................. 3
2.2 Borehole Diameter__.______._...__._.__ 3
2.3 Well Drilling and Construction.................................................................. 3
2.4 Well Casing ........................................... . .................................................. 3
2.5 Well Screen,,.......................................................,,,,,.....,...,.,.,...,.......,........ 4
2.6 Filter Pack................................................................................................. 4
2.7 Bentonite Seal..,....................................................................................... 4
2.8 Bentonite-Enriched Grout........................................................................ 4
2.9 Concrete 4
2.10 Surface Completion,.................................,................,......,.....,.. ,.,.,,,......... 4
2.11 Modifying Existing Wells,.......,.,................................................................ 4
SECTION 3 TRENCHING AND PIPING
3..1 Trenching.................................................................................................. 5
3.2 Subsurface Piping.......,._.__.._,._______________,___ ..... _.._ 5
3.3 Well -Head Piping..................................................................................... 5
3.4 Above -Grade Plumbing...................................,.........,............,................ 5
3.5 Fittings, Valves and Gauges 5
SECTION 4 REMEDIATION SYSTEM
4.1 Liquid -Ring Pump Assembly 6
4.1.1 Liquid -Ring Vacuum Pump.............................................,...,.,...... 6
4.1.2 Air/Liquid Separator 6
4.1.3 Pump P-1 6
4.1.4 Flow Meter................................................................................... 6
4.2 Liquid -Ring Vapor Effluent Pipe..............................................................6
4.3 Vapor -Phase Carbon for Liquid -Ring Pump Exhaust .............................. 6
4.4 Discharge Stack....................................................................................... 7
4.5 Coalescing Separator Tank................................................................... 7
4.6 Pump P-2................................................................................................. 7
4.7 Low -Profile Air -Stripping Unit .......................
4.8 Liquid -Phase Carbon for Water Treated by the Air -Stripping Unit .......... 7
24854-01(002)
CRA SERVICES

TABLE OF CONTENTS
(CONTINUED)
PAGE/NO.
4.9 Vapor -Phase Carbon for Low -Profile Air -Stripping -Unit Exhaust...
4.11 Electrical Control Panel
4.12 Emergency Controls and Other Controllers..........:............................a....
4.13 Gauges, Switches, Fittings and Valves ...................................................
4.14 Electrical Service
SECTION 5 ANCILLARY CONSTRUCTION
7
8
8
8
8
5,1 Concrete Pad........................................................................................ 9
5.2 13uilding....................................................fi.....,....................................A... 9
SECTION 6 SYSTEM DEMONSTRATION
6.1 Initial Demonstration.......................................................,........................ 10
6.2 Operational Start-llp.........................................................................
11
SECTION 7 DOCUMENTATION...................................................,................ 12
FIGURES
Site Plan____.________.___._ 1
Equipment Location Plan______ ,...................................... 2
Recovery Well and Service Trench Details........................................................ 3
PipingSchematic ............................................................................................... 4
Process Schematic____.._.__.._____...._..._._______.__...,..______. 5
Equipment Layout..__.____------_--.._—..---------------..- 6
ControllerSchedule............................................................................................ 7
ATTACHMENTS
Vendor -Supplied Equipment Information.......................................................... A
24854-01(002) CRA SERVICES

SECTION 1
GENERAL SPECIFICATIONS
1.1 Design Specifications for Construction and Operation of the Remediation System.
These technical specifications are contained in these specifications and corresponding
drawings is sufficient to construct the system through the point of system start-up.
1.2 Drawings. The DPVES design is presented on the attached drawings as follows:
• Figure 1: Site Plan
• Figure 2: Equipment Location Plan
• Figure 3: Recovery Well and Service Trench Details
• Figure 4: Piping Schematic
• Figure 5: Process Schematic
• Figure 6: Equipment Layout
• Figure 7: Controller Schedule
If these specifications disagree with items in these figures, the specifications shall
prevail. Contractor shall notify BP Oil Company (BP) if any portion of these
specifications disagree with applicable zoning or construction regulations.
1.3 Permits and Inspections. The Contractor shall obtain all permits and inspections
required to perform the work, including but not limited to:
• Notifying and coordinating with all utility companies in the site vicinity (e.g.,
electric, telephone, natural gas, sanitary sewer, storm sewer, and others) during
subsurface/intrusive activities (e.g., trenching, drilling);
• Obtaining a general construction permit for the work;
• Coordinating with local inspectors; and,
• Coordinating with local electrical power authority for electrical connection and
inspections.
Prior to initiating site activities, BP will obtain a variance to the City of Charlotte zoning
set -back requirements for the DPVES building location. BP will also obtain (1) a
National Pollutant Discharge Elimination System (NPDES) to discharge the treatment
system effluent; (2) recovery well construction permits; and (3) a permit from the
Mecklenburg County Department of Environmental Protection (MCDEP) to construct
and operate air emission sources.
24854-01(002) 1 CRA SERVICES

BP, or its designatedagents, may at any time during the project inspect the work to
ensure compliance with these specifications and corresponding drawings,
1.4Coordinating Work and Protecting Existing Facilities. The Contractor shall protect all
existing site structures and landscaping from damage or degradation during
performance of the work. Except for the construction activities specified herein, the
Contractor shall allow no negative impact on site cleanliness or appearance. The
Contractor shall protect the integrity of all existing groundwater monitoring wells and
observation wells (Figure 1)., The Contractor shall repair and/or replace any wells
damaged during construction activities.
1.5 Underground Utilities. The Contractor shall be responsible for locating all
underground utilities at the site. Contractor shall notify North Carolina One Call for utility
location. In addition, Contractor shall confirm the location of all private underground
utilities at the site utilizing BP-fumished site plans, utility company records, and overt
physical evidence. Contractor shall protect underground utilities during construction
activities. If underground utilities must be temporarily severed or relocated to facilitate
construction, the Contractor shall be responsible for notifying all affected parties,
securing appropriate permission and/or permits, replacing or repairing the affected
utilities, and securing necessary inspections. Contractor shall repair underground
utilities damaged during construction activities at no cost to BP.
24854-01(002) 2 CRA SERVICES

SECTION 2
RECOVERY WELLS
2.1 Well Locations and Clearance. Four recovery wells (RW-1, RW-2, RW-3, and RW-4)
shall be installed at the locations shown on Figure 1. The Contractor shall stake the well
locations and shall take all necessary care to ensure that the locations are clear of
underground utilities. The borehole shall be advanced using a hand auger or post -hole
digger from the surface to a depth of 5 feet below ground surface (bgs) for the full
diameter of the subsurface drilling equipment. The Contractor shall exercise necessary
care to avoid overhead utilities and structures with drilling equipment.
2.2 Borehole Diameter. The borehole diameter shall be a minimum of 8 inches and a
maximum of 12 inches.
2.3 Well Drilling and Construction. Well construction details are shown on Figure 2. The
recovery wells shall be rotary drilled using hollow -stem augers with a minimum inside
diameter of 6 inches. If, and only if, soil enters the augers, potable -grade water may be
added to create hydrostatic overbalance; a retrievable plug may be installed in the
auger bit; or, a tapered wooden plug may be inserted in the auger bit.
Well screen and casing shall be installed through the hollow -stem augers. The well
screen shall be set at the depths shown on the drawings. A bottom cap shall be affixed
to the well screens.
Filter -pack material shall be placed through the annulus between the well casing and
the hollow -stern augers. The augers shall be slowly raised as the filter pack is installed
in the borehole. At all times while placing filter pack, the auger bit shall not be withdrawn
to above the top of the filter pack material. The filter pack shall be placed to 6 inches
above the top of the well screen over the full diameter of the borehole. The depth to the
top of the filter pack shall be confirmed by direct measurement.
The bentonite seal shall be placed through the casing -to -auger annulus directly on top
of the filter pack. The augers shall be slowly withdrawn as the bentonite seal is installed.
The auger bit shall not be withdrawn to above the top of the bentonite seal. The
bentonite shall be a minimum of 6-inches thick over the full borehole diameter. The
depth to the top of the bentonite seal shall be confirmed by direct measurement. A
minimum of five gallons of potable -grade water shall be placed down the annulus to
hydrate the bentonite seal. Bentonite-enriched grout shall be placed in the annular
space around the well casing from the top of the bentonite seal to above the bottom
edge of the steel well -head box.
The recovery wells shall be drilled to a maximum total depth of 20 to 25 feet bgs. Exact
depths shall be field adjusted by BP or its Agents. All drilling returns shall be drummed
and shall remain on -site for subsequent testing and disposal by BP.
2.4 Well Casing. The well casing shall be Schedule 40 polyvinyl chloride (Sch. 40 PVC).
Casing sections shall be flush -joint threaded with a neoprene "0" ring or other approved
24854-01(002) 3 CRA SERVICES

means of rendering the joint watertight. Casing for recovery well shall have a nominal
diameter of 4 inches.
2.5 Well Screen, The well screen shall be Certa-Lok TM PVC screen or equivalent Sch.
40 PVC slotted or wire -wrapped screen. Screen slots shall be 0.010-inch to 0.012 inch
with no less than five percent open slot area. Screen shall be flush -joint threaded and
configured with a bottom cap, threaded or affixed with stainless steal screws. Screen for
recovery wells shall have a nominal diameter of 4-inches.
2.6 Filter Pack. Filter pack shall be silica sand with American Society for Testing and
Materials (ASTM) gradation 20/40,
2.7 Bentonite Seal. The bentonite seal shall be bentonite clay in a pressed pellet or chip
form. Powdered bentonite shall not be used for the bentonite seal.
2.8 Bentonite-Enriched Grout Bentonite-enriched grout shall consist of Type 1 Portland
cement as specified in ASTM C-150, Wyoming bentonite powder without additives, and
potable water in the approximate proportions of 63 gallons water to seven, 94-pound
bags of cement to one, 50-pound bag of bentonite. The ratio may be varied to yield a
workable consistency.
2.9 Concrete. Concrete shall consist of Portland cement, aggregate, and water and
shall have a minimum 28-day compressive strength of 3,000 pounds per square inch.
All concrete shall have fiber -mesh reinforcement.
2.10 Surface Completion. The well head boxes shall be completed and constructed as
shown on Figure 3. The well -head box shall be carbon steel with a minimum dimensions
of 2 feet by 2 feet by 2 feet. Well -head boxes shall be installed with fiber -mesh -
reinforced concrete and contractor shall be responsible for repairing if settling occurs.
Each well -head box shall have a 1-inch PVC drain extending through the bottom of the
box and concrete to allow accumulated runoff to drain. Well -head boxes shall have a
lockable carbon steel cover capable of supporting an HS-20 wheel load. Well -head
boxes shall be installed 1 inch above grade with surrounding concrete having
continuous slope to existing materials.
2,11 Modifying Existing Wells. The surface completion of existing monitor wells MW-1
and MW-4 (Figure 1) shall be modified for use as recovery wells. The existing wellhead
boxes and surrounding material shall be removed to expose the existing well riser pipe.
A carbon steel wellhead box, as specified above, shall be installed around the riser pipe
(see Section 2.10 for installation details). A new annular bentonite-enriched seal shall
be placed in the annular space around the well casing from the top of the excavated
seal to above the bottom edge of the well -head box. Contractor shall replace/repair the
well riser pipe if damaged during the construction activities.
24854-01(002) 4 C RA SERVICES

SECTION 3
TRENCHING AND PIPING
3.1 Trenching. Service trenches shall be located as shown on Figure 2 and shall be
excavated, backfilled, and resurfaced as shown on Figure 3. Concrete used for
resurfacing shall have fiber -mesh reinforcement.
3.2 Subsurface Piping. A separate 1-1/2 inch Sch. 40 PVC pipe shall be installed to
each recovery well, including the modified existing wells. The piping shall extend from
the treatment system building to the recovery wells as shown on Figure 4. All PVC
fittings shall be pressure fittings. Joints shall be cleaned and solvent welded using PVC
cleaner and PVC solvent glue.
3.3 VIIeII-Head Piping. Figure 3 shows the well -head piping. Each recovery well shall
have a 1-inch suction intake pipe extending to approximately 2 feet from the bottom of
the recovery well.
3.4 Above -Grade Plumbing. Above -grade plumbing shall be limited to the remediation
system building. Above -grade piping shall be galvanized steel with nominal sizes shown
on the Drawings.
3.5 Fittings, Valves and Gauges. Contractor shall supply the fittings, valves, and gauges
necessary to complete the work and as shown on the drawings.
24854-01(002) 5 CRA SERVICES

SECTION 4
REMEDIATION SYSTEM
4.1 Liquid-Rinq Pump Assembly. A liquid -ring pump assembly (skid) shall be placed as
shown on the drawings.
4.1.1 Liqd-Ring Vacuum Purnp. The pump shall be an Atlantic Fluidics liquid -ring
vacuum pump Model A130, or approved equal. The pump shall be powered by a
208-volt, 3-phase, 10 HP explosion -proof direct -drive motor. Motor shall be
equipped with thermal -overload protection. The pump shall be capable of sustaining
a vacuum of 20 inches of mercury at a maximum total flow rate of 125 cubic feet per
minute (cfm). Pump shall be rated for continuous duty and for environmental
remediation application.
4.1.2 Air/Liquid Separator. The liquid -ring pump assembly shall be equipped with an
air/liquid separator configured to (1) accept an incoming total air flow rate of up to
125 cfm; (2) collect separated liquids; (3) have connections to allow recirculation of
water from the tank to the liquid -ring pump for seal water; and (4) have an automatic
float system (mechanical) to allow for make-up water from a potable water source.
The air/liquid separator shall include a site glass and system of four float switches
(HLT-1, HL-1, LL-1, and LLT-1). The float switches shall operate as shown on
Figure 7.
4.1.3 Pump P-1. Pump P-1 shall be an external centrifugal transfer capable of
moving accumulated liquids from the air/liquid separator to the Coalescing
Separator Tank (described below) at a flow rate of 10 gallons per minute (gpm) with
a maximum total dynamic head of 20 feet of water. The pump shall be equipped
with a 115/208-volt, single-phase , explosion -proof, direct -drive motor.
4.1.4 Flow Meter. The flow meter shall be capable of withstanding contact with free
product. The flow meter shall display total flow and shall read in 10th-gallon
increments. The flow meter shall be installed on the liquid effluent line from pump
P-1, upstream of the Coalescing Separator Tank.
4.2 Liquid -Ring Pump Vapor Effluent Pipe. A vapor effluent pipe shall be installed as
shown on the drawings. The stack shall have a nominal diameter of 4 inches and shall
be constructed of Sch. 80 CPVC with a temperature rating greater than 200 °F.
4.3 Vapor -Phase Carbon for Liquid -Ring Pump Exhaust. A vapor -phase carbon unit
shall be installed downstream of the liquid ring vacuum pump. The carbon unit shall
have welded -steel construction and shall be suitable for an air flow rate of 125 CFM.
The carbon unit shall contain a minimum of 1,000 lbs of activated carbon and shall be a
Carbonair Brand Model No. GPC-7R or approved equal. Diameter of the carbon unit
shall not exceed 38 inches. Upstream of the vapor -phase carbon unit, the gauges,
switches, and demister shown on Figure 5 shall be installed. Downstream of the vapor-
24854-01(002) 6 C RA SERVICES

phase unit, the valves, gauges, and other equipment shall be installed as shown on the
drawings.
4.4 Discharge Stack. The vapor -phase carbon unit shall be equipped with an air
discharge stack of 6-inch nominal diameter Sch. 40 PVC with a rain cap. Stack shall be
installed through an opening in the building roof which shall be sealed to prevent.
leakage. The stack shall be installed to a height of 12 feet above ground surface and
shall be supported for stability in wind loading up to 60 miles per hour.
4.5 Coalescing Separator Tank. The coalescing separator tank shall be a GRS, Inc.
coalescing separator designed for 10 gpm liquid flow and a total volume of 200 gallons.
Tank shall be equipped with the optional pumping chamber. Tank shall be equipped
with operating controls HLT-2, HLT-3, HL-2, and LL-2 which shall function as shown on
Figure 7.
4.6 PurnpP-2. A transfer pump shall be installed to pump liquids (groundwater) from the
coalescing separator tank to the top of the low profile air stripping unit. Pump shall be
equipped with a 115/208-volt, single-phase motor. Pump shall be rated for intermittent
duty and shall be of explosion -proof construction.
4.7 Low -Profile Air -Stripping Unit. The low -profile air -stripping unit be a North East
Shallow Tray Model 2331 low profile diffusion stripper of stainless steel construction.
Unit shall include a stainless steel demister. The unit shall be skid -mounted containing
an aeration blower (B-1) and transfer pump (P-3). The blower shall be an American Fan
Model 3N-04-22.5N blower with a 7.5-HP, explosion -proof, direct -drive, 208-volt,
3-phase motor. Blower shall have a differential pressure switch as an emergency
control in the event of blower failure. An inlet screen and a damper must shall be
included. Pump P-3 shall be a 777 series JABSCO pump, or approved equal, capable
of delivering 11 gpm liquid flow rate at a total head of 30 feet. Pump shall be equipped
with a 115/208-volt, single-phase, 1/Z-HP, motor of explosion -proof construction. The
low -profile air -stripping unit shall include controls HLT-4, HL-3, and LL-3 which shall
function as shown on Figure 7.
Additional controls and equipment to be installed as shown on the drawings.
qby Air -Stripping 200-lb
4.8 Liquid -Phase Carbon for 'Water Treated the Unit. Two,
carbon vessels shall be installed in series downstream of the air-strippingunit. The
carbon vessels shall be 55-gallon drum type canisters. The liquid phase carbon units
(two) shall be Carbonair Brand LPC-3 or approved equal.
4.9 Vapor -Phase. Carbon for Low -Profile Air -Stripping -Unit Exhaust. A vapor -phase
carbon unit shall be installed to treat the air-sparge unit exhaust. The carbon unit shall
contain a minimum of 1,000 Ibs of activated carbon and shall be a Carbonair Brand
Model No. GPC-7R or approved equal. The carbon unit shall be of welded -steel
construction and shall be suitable for an air flow rate of 300 CFM. Diameter of the
carbon unit shall not exceed 38 inches. Upstream of the vapor -phase carbon unit, the
gauges, switches, and demister shown on Figure 5 shall be installed. Downstream of
24854-01(002) 7 CRA SERVICES

the vapor -phase carbon unit, valves, gauges, and other equipment shall be installed as
shown on the drawings.
4.10 Exhaust Stack. The vapor -phase carbon unit shall be equipped with an air exhaust
stack of 6-inch nominal diameter Sch. 40 PVC with a rain cap. Stack shall be installed
through an opening in the building roof which shall be sealed to prevent leakage. The
stack shall be installed to a height of 12 feet above ground surface and shall be
supported for stability in wind loading up to 60 miles per hour.
4.11 Electrical Control Panel. The electrical control panel (ECP) for the treatment
system shall provide power to and control all electrical components of the system. The
ECP shall operate with 208-volt, 3-phase, 200 amp incoming power services. The ECP
shall include an emergency shut-off switch. The ECP shall met the general electrical
service requirements as specified below and as is shown on the drawings. The ECP
shall have red emergency lights to indicate when any emergency control (high-level
trips (HLT). Low -low-level trip (LLT), pressure switch (PS), and temperature thermostat
(TS)), has been activated. There shall be one emergency light for each emergency
control.
4.12 Emergency Controls and Other Controllers. Emergency controls and other
controllers shall provide operation of the system in accordance with the controller
schedule shown on Figure 7. The emergency controls and other controllers shall be
located as shown on the drawings. Controllers on liquid streams me be electrical flow
switches or pressure switches, Conductivity controllers shall not be used.
4.13 Gauges, Switches, Fittings, and d Valves. Gauges, switches, fittings, and valves
shall be installed as shown on the drawings. The vacuum gauges on the liquid -ring
vacuum pump influent lines, including the gauge at each recovery well, shall be capable
of measuring up to 25 inches of mercury vacuum in 1-inch increments.
4.14 Electrical Service. Three-phase, 208-volt, 200-amp minimum electric service shall
be supplied to the remediation system. The Contractor shall provide the connection of
the power to the system. The Contractor shall construct a temporary power pole with an
electric meter next to the remediation system building, as shown on the drawings. The
electrical power supply to the remediation system shall be metered and shall provide
breakers separate from other on-sit,e electrical power service. The breaker box shall be
mounted on the temporary power pole.
All electric service, wiring, and components internal to the remediation system building
shall be explosion -proof, meeting the requirements of the National Electric Code Class
1, Group D, Division 1. All electric service shall meet local codes and the requirements
of local codes shall prevail. All electrical equipment, including the electrical control
panel, shall be UL Listed or Approved. All controls shall be of intrinsically -safe
construction, or, shall otherwise meet the listed explosion -proof requirements.
24854-01(002) 8 CRA SERVICES

SECTION 5
ANCILLARY CONSTRUCTION
The remediation system equipment shall be installed within a pre -fabricated metal
building which shall be anchored to a supporting concrete pad.
5.1 Concrete Pad. The concrete pad shall be constructed to the plan area of 10 feet by
20 feet and shall have a thickness of six inches. Concrete shall have a minimum
compressive strength of 3,000 psi in 28 days. The pad shall be reinforced with #4 60K
grade steel reinforcing bars placed within the concrete two -inches above the bottom of
the pad and placed six inches on center each way. As an alternative, concrete may
have fiber -mesh reinforcement. The concrete shall have a level broom -finished surface
and shall have no depressions allowing accumulation of surface water. Contractor shall
obtain all necessary permits and/or authorization from the City of Charlotte prior to
installation. Contractor shall coordinate with local building inspectors for all required
inspections.
5.2 Building, The remediation system building shall be pre -fabricated, with steel fume
construction. The building shall be constructed with exterior walls with a 1-hour fire wall
rating. The building shall have a wall height of nine feet. The building shall have two
sets of double doors as shown on Figure 6. The each door (four) shall provide a
minimum of 36 inches clear horizontal opening and 8 foot clear vertical opening. The
doors shall be equipped with locking deadbolts and standard doorknobs for extemal
use. "No Smoking" signs shall be placed on each set of double doors and on the inside
of the building. A 20-pound, dry chemical, tri-class fire extinguisher shall be mounted to
the interior wall adjacent to each doorway.
The building shall be equipped with an electric ventilation fan with a manual switch
installed on the outside of the building in a water -proof enclosure. Ventilation air shall
exit the building via a wall vent with louvers. The fan motor shall be 115/208 volt, single-
phase motor with explosion -proof construction.
24854-01{002) CRA SERVICES

SECTION 6
SYSTEM DEMONSTRATION
6.1 Initial Demonstration. The Contractor shall, in the presence of BP, demonstrate that
all mechanical elements of the system operate within the specified rates and capacities
and shall demonstrate the operating range and proper operation of each controller.
Specifically, the check-out shall demonstrate operation of:
Mechanical Equipment:
® Liquid -ring vacuum pump establishing a vacuum of 20 inches of mercury.
a Satisfactory aeration of the air-sparge tank.
Pump P-1 delivering influent from the air/liquid separator tank to the
coalescing separator tank.
© Pump P-2 delivering effluent from the air sparge tank through the carbon
filters to the discharge location.
O Gravity discharge of water from the coalescing separator tank to the air-
sparge tank.
O Correct flow meter operation.
O Correct operation of al valves, gauges, switches, and controllers.
Level Controllers:
O High-level trips (HLT-1, HLT-2, HLT-3, and HLT-4).
O Low-level switches (LL-1, LL-2, and LL-3).
O High-level switches (HL-1, HL-2, and HL-3).
O Low-level trip (LLT-1).
O Pressure switch (PS-1).
© Fresh air by-pass (FAG-1).
O Temperature thermostat (TS-1).
O Differential pressure switch (DPS-1).
O Timer (T-1).
O Automatic float (AF-1).
24854-01(002) 10 CRA SERVICES

62 Operational Start -Up e Contractor shall be on -call and readily available during
the initial -hours of operation. During this time l will collet air and water samples to
verify prop:: r system operation. The system ` will then be temporarily shut down until
analytical results are received, Upon receiving analytical results documenting proper
system operation, the system will be restarted. d. During this re -starting, the Contractor
shall be on -call and readily available for the initial -fours of operation. Acceptance of
the system by BP will follow this 48-hour period.
002) 1i RVIE

SECTION 7
DOCUMENTATION
Contractor shall furnish the following:
Manufacturer's specificationsand instruction manual
acquired equipment;
cornrnerdialiy
Dimensions and capacitis for all fabricated elements;
Specifications for al t service lines (e.g., electrical wiring, controller w irin ,
system piping, and others);
As -built construction details; including
trnch+s
os det
service
24854-01(002)
12
VICES

ATTACHMENT A
VENDOR UPPLIED EQUIPMENT INFO it N

UI i-RING VACUUI

Simplex duai phase extraction
soil remediation package
STAINLESS S1 hEL A RAN
SEPARATOR TANK
ELECTRICAL
CONTROLLER
1' MOUND WATER
DISCHARGE
CHECK VALVE
c
M
4• CLEi NOUr
ACCESS
0
(NPT)
E
(NPT)
A 10-A20
A75-A 130
71•
44'
57

TRANSFER PLh 1P
STAINLESS STEAL
AIWWATER
SEPARATOR TANK
ELECTRICAL
CONTROLLER
1' GROUND WATER
DISCHARGE
CHECK VALVE
A75-A1SQ SI!"PLEX SOIL REMEDIATION PACKAGE SPECIFICATION'S
ACCESS
FULL LENGTH SIGHT
TUBE WRH LEVEL
SWITCHES

re (tbrfj
150 12s 100 TS
25 0
2
50 -+
10
8
s
4
r
10
vvcu
Al
A100
A75
24 2
(items of mercury)
-° A757
10 20 24
26
o. s art Bitted on diy air si 68'f WON' A75
% C) aesi ruder, and 21t.02 kith's 4100
1srrd barrio eMie pn+sstre. Al2E1
28
30
30
atlantic medics, Inc.. 21 6a ai Stmt. South Norwalk, CT 06164, (2031 9663.7115, Fas (203) 66s-e219

TRIPPING UNIT

.... ,. x-•••«
P.04i06
Pr
ystem Pertornmsnce Esti
Client & Prq osel Information:
Make Vette
ORC
e
Untreated
Contaminant influent
Effluent Targat
Ethyl Benzene
Toluene
Xylanas
1200
ppe
2311 Model 2__
uent Effluent
Water
r) Air(IbsI1v)
ei % removal
61 PPb 2 ppb
0.012200 0.012408
97.5089% 99.9424%
27 ppb
0.0083118
97.9775%
' 2225 ppb
0.027387
70.1975%
2000 ppb 50 ppb
-- 0.005709
97.0135%
11d ppb
0.024436
97.7059%
1 PO
0.00649e
9>i.9591 %
693 ppb
0.035551
91.11a1%
2 ppb
0.000094
99.9132%
3ppb
0.024996
99.9474%
Model chosen:
Water Flow Rate:
At Flow Rate:
Water Tamp:
Air temp:
ANV Ratio:
Safety Factor
Effluent
Water
% removal
<I ppb
0.012505
cl ppb
0.008503
99.9992%
2300
10.0
300
50.0 •F
50.0•F
224.4
None
Model 2341
Effluent
Water
Aires
% ramord
c1 ppb
0.012506
100.0030%
<1 ppb
0.006503
100.0000%
207 ppb $3 ppb
0.037982 0.038707
97.3530% 00.2111 %
ppb
0.010004
99.9974%
ppb
0.010004
99.9089%
0.025011b 0.02 01111
99.99t s% 100.0000%
This report lfae been generated by 3haIoWTray Modeler se:fearare'version 2.1M, This software is de ived to
again arsided operator in omitting the , MC. le n01 responsible
of a 3hailowtray *stripping system: North East
scponsible for incidental or consequential damage* resulting from the
improper operation of either the software or the ear stripping ecluipmesnt.. Report generated: 8/2/08
0USTRtAL BLVD.
OGERS, MN
55374
PAode♦ 2351
Effluent
Water
Aisflbsibr)
% removal
c1ppb
0.0125006
100.0000%
[phone]
FAX: [phone]
cl ppp
0.006503
100.0000%
19
0.038022
99.7649%
0.010004
100.0000%
cl ppb
0.025011
100.0000%

pro'
System Performance Est
Client & Proposal Information:
Pike Vain
0RO
Untreated Model 2311
Contaminant. Influent. Effluent
Effluent Target W st or
Air(lbs/h0
% removal
Benzene 2500 ppb 10 ppb,
1 ppb 0.003737
994352%
Ethyl Benzene
Toluene
Xytenes
2000
ppb
4 ppb
0.0011145
99.7162%
729 ppb
0.010611
90.ft54e%
10 ppb
0.002998
99_5035%
5000 ppb 18 ppb
0.007476
9►.6593%
rated by BiItrwT
pre:Retin
M. Is not r
*1eso'
DIVERSIFIED
RcoNTROL S
INCORPORATED
232i
nt
Air(Ibs,hrj
% r mov al
<1 ppb
• 0.003752
911.9987%
i9 PPb
0.011602.
99.1266%
cl ppb
0.003001
99.9975%
i1 ppb
0.007503
99.9988%
Model Chosen:
Water Row torte:
Air Flow Rate:
Water Tamp:
Air temp:
MN Ratio:
Safety Factor
<1 ppb
0.003752
100.0000%
<1 ppb
0.001951
100.0000%
7
0.011695
99.918a 4
cl ppb
0.007603
100.0000%
21801 INDUSTRIAL BLVD.
ROGERS, MN
55374
2300
3.0 gpm
300 cfrn
50.0 •F
50.0 •F
748.0
None
Model 2341
Effluent
Water
Airilbarht)
% removal
s1 ppb
0.003752
1004000%
K1 ppb
0.001951
100.0000%
1ppb
0.011704
99.9924%
<1 ppb
0.003001
1'00.0000%
e1 ppb
0.007503
100.0000%
000
a1 ppb
0.001951
100.0000%
<1 ppb
0.011705
99.11093%
t1 ppb
0.003001
100.0000%
<1 ppb
0.007503
100.0000%

t
DISCHARGE
VAPOR
OPTIONAL I BMS
DIVERSIFIED
RCO OI
NCORPORATED
ITEM
8RAMN C ICHA GE
CtfCNMOE PUMP
►TRIAL BLVD.
S. MN
55374
(612) 428-'"% 000
FAX: [phone]
EOM; ID, 230 VON. 4 WIRE . GROUND
'CIMKAYT k1,E.E.r. FOR AUPABMIISA110
OTHER VOLUKii QR:KS

N©tth East Ertl nta$ Pt 1
17T.d+neke/ to West Ullman, NH
etrimisig 7051 Fier 6o32'9i-7Ct
Date:
To: Mike Vera
DRC
Fax: [phone]
Phone: [phone]
From: Gordon Clarke
Customer Service
Juno 9
Notes: Number of page(s) not including this cover pag
RE: Prop# 698801
BLOWER
Qtyr KEEP 1 DESCRIPTION
1 500.100.00241 American Fan Blcvrrer, 3N-04.22 5N, 7.5hp,3ph.EXP.248J230/460,cw,th,300
cfm@26', 4"1x4-0. damp,Type B spark resistant
see curve attached
Integrated 2 n v r o n m e n t a i T e c h n© a 9

4' IM-ET, 4' OUTLET
3515 RPM, ,075 ©ENSiT '" ' ILET
IV= CEMl.0873, OV E t . S73
KEY TO GRAN
.__... _ MODEL 3N•O4.22.5N
MODEL 3N-04-20N •
• PEAK
OCTAVE
SAND PT.
20

#� F4OLE8
X . 87RADOUN CI CA.
Fuwaw
PILO
STUB
ET
MO PIPE OUTLET
13'
EN ONAL DATA ARRANGE ET 9 CART A 'GEMENT 1 SAM AS S110WW LESS

CA1UBONAIR
Low Pressure Liquid Phase
Carbon Vessels
n
by AWWA, FDA an:l EPA.
DESIGN ....
LPC 3
• Low-pressure vessel.
* UN Standard 55-gallon steel drum.
• Baked enamel exterior.
• Epoxy -phenolic interior lining..
* Quick installation.
Carbon Cap.: LPC 3 - 200 lbs.
LPC 3.85
• Low-pressure vessel.
• UN Standard 85-gallon steel drum,.
• Baked enamel exterior.
• Epoxy phenolic interior lining.
• Quick installation.
Carbon Cap.: LPC 3.85 - 250 lbs.
S&LPC7
• Welded steel construction.
• 15 psi maximum design pressure.
• 16" diameter bolt an manway.
• Fork tubes for easy lifting.
• 150 lb. influent/effluent connections.
• Bolt down lugs.
• 3/4" drain coupling.
• PVC hub and lateral distributor
• Polyamide epoxy interior lining.
•Polyamide epoxy/urethane' exterior
Carbon Cap.: LFC 5 - 500 lbs.
LPC 7 -10W lbs.
. . • . . • • . . r ♦ • • • • • s • • . w . • • . . •
LPC '13 & LPC 20
• Welded steel construction.
• 15 psi maximum design pressure.
• 16" diameter bolt an a anway.
• Fork tubes for easy lifting.
• 150 lb. influent/effluent connections.
• Bolt down lugs.
• 3/4" drain coupling.
• PVC hub and lateral distribu�
• Polyamide epoxy interior lining.
• Polyamide epoxy/urethane exterior
finish.
Carbon Cap.; LPC 13 1,500 lbs_
LPC 20 - 2,500 lbs.
OPTIONAL 1C1TS
External piping kit
Hose kit
External sample/gauge kit
Internal sampling kit
Decon3-2"
Influent/effluent quick connect kit
Influent/effluent sample & pressure kit
OPTIONS
Flow instrumentation
Sample ports
Quick connect industrial hose
Water
I eakrnent

DESIGN 10 psi 5 pat
PRESSURE (0.66 bar)
(0.35 bar)
EMPTY
WEIGHT
LOADED
WEIGHT
t6RAT1NG
WEIGHT
sons
(23 kg)
2051bs
(93 kg)
423 Ib
(192 kg)
355 lbs
(16I kg)
1001bs
(45 kg)
35D lb.
(159 kg)
725 (ins
(329 kg)
Z731 Nevada Avenue North
New Hope, MN 55427
612-544-2154 800-526-4999
Fax [phone].
PECIFICATIONS
IODEL5 LPC 3 le
24.5'
8A64� (0.55 m)
LPC 3.85
26"
(0.66 m)
LPC 13 LPC 20
4.ft 5f1
(12 in) (1.5 at)
OVERALL 2.13 ft
HEIGHT (0.85 m)
3.02 ft
(0.92 m)
6.83 ft
(2.00 art)
6.83ft
- (2.08 tin)
6.83ft
(z.es m)
BED AREA 2.6 ft'
(0.24 rn')
FLOW 1-10 gpm
RANGE (4-38 Limits)
CARBON 203Ibe
CAPACITY (68 kg)
3.68 fP
(0.34 m')
73 gpm
(t-49 L/mia)
2.50 1bs
(114 kg)
4.91 fe
(0A6 m )
3-35 gpm
(11-132 Lim/
500)ba
an kg)
707 fl' ' 1257 ft' 19.63 ft'
(0.66 m') (1.17 ai') (1.826 m')
4-70 gpm 6-40 gpra 10-130 gpm
(15-265 L/mie) (23-340 L/min;) (36.492 L/etin)
1,000 lb* 1,50O 1b. 2,500 Ibs
(456 kjq) (681 kg) (1,135 kg)
!TM's:CS Two 1" influent/effluent Two 1)(" influent/effluent 2" 150 lb flanges 2" 150 2" 150 lb flanges 3" 150 lb flanges
connections connections 'X" coupling )ir coupling. 1C' coupling W coupling
16" flanged access port 16" flanged access port 16" flanged access port 16" flannad 'Kress port.
15 psi 15 pat 15 psi 15 psi.
(lx0 bar) (1.0 bar) (1.0 bar) Oh bar)
880 lb;
(399 kg.)
I880 Ms
(853 kg)
1280 lba
(581 Irk)
2780 be
(1261 kg)
16501ba
(748 kg)
4150 Iba
(1882 kg)
3680 Ibs 6280 Iba 96501be
(1669 kg) (2848 kg) (4377 kg)
6001ba
p.72 kg)
2200 Ibc
(1034 kg)
33801ba
(1533 kg)
5150 !bra
(?336 kg)

Gas Phase
Carbon Adsorbers
ad
ety of applies
DESIGN
GPC 3&3l4
• LAN Standard 55-gallon steel drum.
• Two 2" PVC connections. (GPC 3i
• Two 4" PVC connections. (GPC 3H)
• Baked enamel exterior.
• Epoxy -phenolic interior lining.
• Quick installation.
Carbon Cap.: GPC 3 - 200 lbs.
GPC 3H - 200 lbs.
GPC 3.85
• UN Standard 85-gallon steel drum
• Two 4" PVC connections.
• Baked enamel exterior.
• Epoxy -phenolic interior lining.
• PVC internals.
Carbon Cap.: GPC 3.85 - 250 lbs.
GPC 5R
• Welded steel round construction.
• Two 4" NPT connections.
• One )4" drain.
• Fork tubes for easy lifting_
• Bolt down lugs.
• Polyamide epoxy/urethane interior
& exterior finish.
• FRP grate with stainless steel screen_
Carbon Cap.: GPC 5R - 5001bs.
GPC 7R
• Welded steel round c.nstructkon.
• Two 6'/'" nozzle connections.
• FRP grate with stainless steel screen.
• Bolt down lugs.
• Polyainide epoxy/urethane interior
it exterior finish_
• Fork tubes for easy lifting.
Carbon Cap.: GPC 7R -1000 lbs.
* • . ♦ • . • ♦ • ♦ ♦
to provide an efficient and economical means to
types of activated carbons are available for a
GPC 13R & GPC 2©R
• Welded steel round construction.
• Fork tubes for easy lifting.
• One condensation drain.
• FRP grate with stainless steel screen.
• Polyannide epoxy/urethane interior
& exterior finish.
• Two 8 %" nozzle connections_
Carbon Cap.: GPC 13R -1,500 lbs_
GPC 20R - 2,000 lbs.
GPC SOR
• Welded steel round construction.
• Fork tubes for easy lifting.
* FRP grate with stainless steel screen.
• 'TTvo 12 Y4 nozzle connections.
• Bolt down lugs.
• Polyamide epoxy/urethane interior
& exterior finish.
• Two )i•' drain/sample couplings.
Carbon Cap.: `GPC 50R - 5,000 lbs.
GPC 706e120
• Welded steel rectangular construction.
• Skid mounted with lifting lugs.
• Polyamide epoxy/urethane interior
4r exterior finish.
• FRP grate with stainless steel screen.
• Four 12%" inlet ports.
• Two quick -disconnect off -gas ports.
• Twosampleports.
• One condensation drain -
Carbon Cap.: GPC 70-10,000 lbs.
GPC 120-13,600 lbs.
OPTIONS
Blowers Humidity control
Influent/effluent ducting
Discharge stack Controls
Additional sampling couplings and valves
CARBONAf
Gas.
Treatment

2731 Nevada Avenue N it
New Hope, MN 55427
612-544-2154 800-526a4999
Fax 612 SMk2151
SPECIFICATIONS
MOO GPC 3
DIMENSIONS 24K" OD 24
(0.62 ru) (0.
3614"H 36
(0.93
GI'C 3.85 GPC 5R GPC
w00
(0.76 sn)
(1-73 in)
GPC 13R
3 CO 4' OD
(0.91c1 (1.2nt)
T2'1i TTH
(2.18 m) (2.18 In)
GPC R GPC 59R
8' OD
(2.44 as)
72"H
(2.18 net
GPC 70
GPC 120
16101"L x 5'W 16'6"L x VW
x 7'6" H x 7"10"H
(5.0sox1.5m (5.0mz24rap
x2.3m) x2.4a)
2.7 sq.fi.
(0.24 eq.m)
3.611 agdt. 4.91 eq.ft.
(0.39 aq m) (0.53 Nan)
7.07 sq.ft. 1257 sq.li. 19.61
(0.76 sq.m) (1.35 squat) (2.11
50.27 cq.f1.
(5.41 sq.m)
69.8 aq.tt.
(6.49 sq
120 ssqq.ft
(11.15sq.m)
20-100 dm
36-360 d n 40-380 cbrst 76-500 dm 120.800 cfm 200-1,800 c m 480-4,000 chn
(1-10 Wolin) (1-10 m'/min) (2;15 m'lzTW (3,14 nt'/min) (6,54 m'/anin) (14-120 m►'/Enin)
700.7,000 dm
r20-200 Main)
ZU0-12,000 dm
434-340 at'/an1a)
CAR'8N . 203 lbs
CAPACITY (68 kg)
�01bs
(68 kg)
7501bs
(114kg)
5001bs
(225 kg)
1,0001be
(456 kg)
1,500 Ube
(681 kg)
melba
(905 kg)
5,000 lb*
(2,270 kg)
10,0©0lbs
(4,540kg)
13,600 Ilbs
(6,174 kg)
FITT1NGS Pie PVC
Inlet end
outlet ports
6 %P notade 8 i(" nozzle 8 W nozzle
(2) f4" half (22) llpe bait (2) r half
(1) 22A (1) 24" aaro (1)(1)raccess
Pod Port port
(4)12Yi inlet
noales
()12Ye outlet
4" nozzles
1"candeseste
drain
(2) Ve.ham
caling
CT) access
ports
4" PVC
inlet end
outlet ports
275 lbs
(125 kg)
4"
(10.16 an)
4' PVC
inlet and
outlet pools
100 be
(45 kg)
350 ibs
(159 kg)
3751be
(170 kg)
4" 470
(10.16cm) (11A3an)
(4) nate inlet
nozzles
(2)12'le outlet
norxks
1 condeasade
dram
(2)'" halt
ports
7,5001bs
DAM kg)

MAY-26-1998 16:13
R SYSTEMS
612544211
t.
_PLAN VW
ELEVATI©J
Sales Drawing #155828
O4.a9:97

-ATTACHMENT B
DISCHARGE '
. _ �ALTERNATIVES

DISCHARGE ALTERNATIVES ANALYSIS
The following alternatives to direct discharge were evaluated: Connecting to a regional
sanitary -sewer system, subsurface disposal, and spray irrigation.
Connecting to a regional sanitary -sewer system. The site is located in Charlotte,
Mecklenburg County, North Carolina. CMUD is the sanitary -sewer authority. CMUD will
not allow treated groundwater to be discharged to the sanitary -sewer system (see
attached correspondence from CMUD).
Subsurface disposal. Subsurface disposal is not an option because:
Groundwater is relatively shallow, typically ranging from 10 to 15 feet below
ground surface (bgs);
There is little area at the site not within the dissolved petroleum plume;
There is insufficient area in the apparent upgradient location (north-northwest)
to locate a subsurface disposal system; and,
There are nearby water supply wells which prohibits use of an injection well.
Spray irrigation. Spray irrigation is not an option because nearly the entire site is
covered by asphalt/concrete. The site is an active gasoline service station.
Because there were no alternatives to direct discharge, a present -value cost analysis
was not necessary.

ATTACHMENT
USGS TOPOGRAPHIC

DESIGNED
DRAWN 6"
CHECKED
APPROVE4
RTH CAR€�?LIh1A
NOT TO SCALE
0 feet 2000
SCALE
U.S.G.S. 7.5 MINUTE SERIES QUADRANGLE MAPS,
DERITA, NORTH CAROLINA 1993
CRA SERVICES
G&E ENGNEERING D NIS1ON
USGS
TOPOGRAPHIC
LOCATION MAP
=2000'
SCALE
G,/SHEET N
RE
24854-01(d 00NN—BR©01 JUN 02/9

ATTACHMENT
GROUNDWATER ANALYTICAL DATA

1
A,N -.i tniA'�
04 C.1C LA U r
G30 d d d,©
A
S
A
LA
A Lol A A A IA
l!0 ^mil
i
A-AIA�
WI Lit
Al
A A
© d
A A
nA A{A:A
d
7r
A AA
AA A A
SS _
li A A A A
z.. ... 0..+ .,
d
W Y
n
C-'
CAAAA
' 0-,
CD
FAA AA
A
A A.
�'sw+
A A
N'A La A
A A A ,A:AA A
--
h.)', Ate,, 3
A
A A A
A IA A A A, A
rA A A
A A N
A
A
AA.
A
A A
A
A A
A7
A
A' A

Well
Analysis'alnits)
EPA Method 601 (ug/L)
1,2-Diehloroethane
1,2-Dichloropropane
EPA Method 602 (ug/Lr
Benzene
Toluene
Ethylbenzene
Total Xylenes
Methyl tert-butyl Ether
Isopropyl Ether
EPA Method 625 (ugl)
Naphthalene
Fluorene
• enan retie
( amp es co I ecto, y • e mo
(2) Rinsate blank.
(3) Duplicate of MW-1.
(4) Method compounds detected in one or more groundwater samples are included in table.
= No action level listed in 15A NCAC 2L .0202g.
<10
<10
6,300
75
570
370
1,100
630
<10
<lp
MW-2
5,300
3,700
2,600
15,000
770
<500
<10
TABLE 3
SUMMARLZED RESULTS OF LABORATORY ANALYSIS'
EPA METHODS 601, 602, and 625
GROUNDWATER SAMPLES COLLECTED 11/12/97
MW-3
BP Service Station No. 24180
516 W. Sugar Creek Rd.
Charlotte, North Carolina
<1
<1 <1
2
9
<10
<10
<10
14
<1(!)
1
4—
<10
<10
1,100
<50
12
20
370
<50
67
<10
2
1,700 1
<5
130
330
<101 <10 j 48
<10
<10
<io r <10 i<10
, .; an yzeti by Anrerican Environlieri
NCLV
<1
<5
<10
<10
<10
W-12 -13 DM DMVV- NC Action
Level
7
<10
41 2 <1 0.38
<1 <1 0,56
4,800 1,600
<500
480
700
40
130
<5
74
<10 <10
<10 < 0 <10
790
<10
<10
<10
6
1
1,000
29
530
200
/0
<10 21
<10 ni
<10 ni
.•4
PIEDMONT GEOLOGIC, P.C.

1. D..
EPA Method 625 (tt
Naphthalene
Bis (2-ethylhexyl) phthalate
Phenol
(1) Samples collected by Piedmon
(2) Rinsate blank,
(3) Duplicate of MW-1.
(4) Method compounds detected in one or more groundwater samples a
nl = No action level listed in 15A NCAC 2L .0202g.
J = Compound detected at concentration above MDL but below PQL.
<1.0
2,100
4,200
990..
400 36
TABLE 3
SUMMARIZED RESULTS OF LABORATORY ANALYSIS`
EPA METHODS 601, 602, and 625
GROUNDWATER SAMPLES COLLECTED 8/7/97
<1.0
.0
26
<200 19
620 570
<100 <100
16
<10
100 <100 <
BPService Station No. 24180
516 W. Sugar Creek Rd.
Charlotte, North Carolina
Y4 MW-5A MW-7A:
<1.0 <1.0 1.0
<1.0 . <1.0 <1.0
MW-8
70 8,41 37
8. J <1 2.8 J <5
9.9 J 310 <25 83
15 J 600 <25 240
7,800 65 1;400 410
<100 <10 18 J 10
18
6J
<20
<20
MW-10
<1.0
<1
47
1.0
46
2.7
<1.0
210 34
<40
<10
<10
2
1.0 J <1.0 <1,0
4.9 <1.0 1,800
<1.0
<1,0
45
8„0
<1.t1
<10
<10
<10
<1.0 <S0
1,0 870
1.0 1,300
1.0 470
1,8 <50
<10 590
12
<100
DMW-1
DMW-2
26 2,6
1.6
<1,0
DMW-3
<1..0
1.©
12,16,1,1
<10 1.9 J 1 <1.0
<10 <10
20 1.7 J
79
440 1
<10 <10
<10
<10
<10
19 <10
<1.0
<1.0
<10
<10
NC Action
Level
0.38
0.56
29
530
200
70
21
Geologic, P.C.; analyzed by American Env
ronmen
Network, Inc.
e included in table.
PIEDMONT GEOLOGIC, P.C.

An
ysis (Units
EPA Method 601 (ug/L)4
1,2-Dichloroethane
EPA Method 602 (u
Benzene
<100
-2
<100
TABLE 3
SUMMARIZED RESULTS OF LABORATORY ANALYSIS°
EPA METHODS 601, 602, and 625
GROUNDWATER SAMPLES COLLECTED 5/14/97
MW-4
<10
,900 2,900 4 83
Toluene <500 4,400 <5 <50
Ethvlb enzene 95..
© 1,600 9 14
Total Xylenes 1.300 9,500 33 <20
Methyl tent -butyl Ether 940 510 1501,000
<500 <500 6 100
Isopropyl Ether
EPA Method 625 (ugfL)
Naphthalene
Phenol
BP Service Station No. 24180
516 W. Sugar Creek Rd,
Charlotte, North Carolina
MW-5A,
<10
140
<50
140
290
71
50
670 <10 <10 36
<10 <10 <10 <10
(1) Samples collected by Piedmont Geologic, P.C.; a
(2) Rinsate blank.
(3) Duplicate of MW-1.
(4) Method compounds detected in one or more groundwater samples are included in table.
nl = No action level listed in 15A NCAC 2L .0202g.
MW-7A,
0
0
<1
51
5
12
<1
<2 110 3
<1
<1
<1
<10
1,800
DMW-1
1.9
<50 <50
860 <10
DMW-2,
<1
NC Action
Level
0,38
29
1,200 34 <2 <2 530
69 5 <5 <5 460 110 410 <5 200
<10
yzed by America
<5 <5 <50 <50 <5 <5 70
18 <10
<10 <10
Environmental Network, Inc.
<10
590
<10
65 10
29 <10
<10
_21
PIEDMOtv7" GEOLOGIC, P.C.

ATTACHMENT E
GROUNDWATER VA I TA

TABLE 2
GROUNDWATER LEVEL DATA
BP Service Station No. 24180
516 W. Sugar Creek Rd.
Charlotte, North Carolina
Da
TOC
Elevation
0/98 75332
412t92 750,00'
(Type B) 8/
750
Depth to
NAPL
below TOC)
ND
25/96 750.00 ND
11 /97 75OE00 ND
Depth to
Groundwater
Ct. below TOC)
12.98
18.12
12.04
15.96
12.85
14.58
14.65
15.20
19,23
11.29
4
6,37
0.40
4
NAPL
c kness (ft)
NA
NA
NA
NA
NA
NA
NA
NA
NA
NAPL Surface
Elevation
NA
NA
NA
NA
NA
NA
NA
NA
NA
roundwater
Elevation (1)
737
732.07
738.15
734.2
4i7.8'7
739.14
739.07
738.52
734.49
NA NA 742.43
NA NA
NA NA
NA
NA
NA
A
7
.6
739.60
735.67
97 753.9
27 NA
NA
742.32
97 753.59
2.92 NA
7131 /97 7 3.59 N' 2 "vl NA
816/97 753.59 NM 13.65 NA
NA
NA
NA
740.67
NA
9,94
97 753.5
7,60 NA
0/98 73.59 N'ii+1 9,56 NA
NA
NA
5.99
744.0
(continued
PIEDMONT GEOLOGIC, P.C. Page 1 of 5

MW-3
(Type II)
MW-4
(Type II)
Date
4/2/92
'roc
Elevation
(1)
8/8/95
3/25/96
97
97
6//97
7131/97
750.96
TABLE 2 (continued)
GROUNDWATER LEVEL DATA
BP Service Station No. 24180
516 W. Sugar Creek Rd.
Charlotte, North Carolina
Depth to
NAPL
ft. below TOC)
Depth to
Groundwater
It. below TOC)
12.20
NAPL .._.__ NAPL Surface
Thickness (ft) Elevation
(1)
NA NA
Groundwater
Elevation (1)
738.76
750.96
750.96
750.96
75.54
754.54
754.54
ND
ND
16,28
10.63
14,63
11.92
13,22
12.67
NA NA
NA NA
NA NA
NA NA
NA NA
NA NA
734,68
740.33
736.33
742.62
741.32
741.87
8/6/97
2
97
0/98
41 2 ..
8/8/95
3/25/96
2/11/97
5/13/97
6/5/97
7/31/97
8/6/97
11/11/97
2/10/98
754.54
754.54
754.54
749.12
749.12
749.12
749.12
752.72
752.72
752.72
752.72
752,72
752.72
ND
ND
ND
ND
ND
ND
ND
ND
ND„.
ND
•
13.41
17,31
12,16
16.34
14.62
11.52
13.47
12.75
17.42
10.45
NA NA
NA NA
NA
NA
NA
NA
NA
NA
NA
+1A
NA
NA
NA
NA
NA
NA
NA
NA
,NA
NA
NA
NA
NA
NA
741.13
737.23
74.61
76.96
732.78
738.06
734.50
741.20
739.25
739.97
738.91
735.30
742.27
A
(Type 11)
3/25/96
2/11/97
5/13/97
6/5/97
7/31/97
8/6/9
748
7
748.57
752.14
752.14
752.14
752.14
ND
ND
ND
ND
ND
11.24
15.32
12.20
14.32
14,73
1 ,28
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
737.33
733.25
739.94
737.82
737.41
736.86
97 752.14
2/10/98
752.14
19.30
10.7
NA
NA
NA
NA
732.84
741.42
(contl9U
PIEDMONT GEOLOGIC, P.C.
Page 2 of 5

We
1v1W-7A
(Type 11)
(Type 11)
�10
(Type II)
Date
3/25/96
97
97
6/5/97
7/31/97
8/6/97
97
2/10/98
TOC
Elevation
(1)
747.81
747,81
,751.41
751.41
41
751.41
751.41
751,41
3/25/96 750.74
2/11/97
750.74
S/13/97 76,32
6/5/97 754.32
7/31/97 754.32
8/6/97
754.32
11/11/97 754.32
2/.1.0/98
3/25/96
7
97
6/5/97
7/31/97
8/6/97
/97
2/1(1/9
2
749.07
749.07
752.67
752.67
752.67
752.67
752.67
752.67
TABLE 2 (continued)
GROUNDWATER LEVEL DATA
BP Service Station No. 24180
516 W. Sugar Creek Rd.
Charlotte., North Carolina.
Depth to
NAPL
below TOC)
ND
ND
ND
Np
N
ND
ND
NP
ND
ND
ND
Depth to
roundwater
below TOC)
10.28
13.77
10.88
12.90
12.48
13.21.
16.86
9,71
10.21
10.87
12.50
12.80
13.26
17,00
9.40
9,56
10.24
12.35
12.65
13.22
16.90
8 72
(continued)
NAPL
Thickness (ft)
NA
NA.
NA
NA
NA
NA.
NA
NA
NA
NA
NA
NA
N.A.
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NAPL Surface
Elevation
(1)
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
N'A
risk
NA
NA
NA
NA
NA
Groundwater
Elevation (1)
737.53
734.04
740.53
738.5'1
738.93
738.20
734 55
741.70
740.53
736.79
743.45
741.82
741.2
741.06
737.32
744.92.
7
735.63
742.43
740.32
740.02
739.45
735.77
743.95
PIED ONT GEOLOGIC, P.C.
Page 3 o1' 5

TAIILE 2 (continued)
GROUNDWATER LEVEL DATA
BP Service Station No. 24180
516 W. Sugar Creek Rd.
Charlotte, North Carolina
ace
TUC Depth to
levation NAPL
11l Cft. below TOC
Depth to
G roundwater
tt. below TOC
NAPL NAPE Surface Graundwatei
Thickness (ft) Elevation Elevation (1)
(Type
25/96
749.67 ND
9
NA
NA 738.76
97
97
749.67 ND
753.25 ND
4
9
NA NA 74.80
NA NA 741.27
61 19►
7/31/97
6/97
753.25 NO
4
NA NA 739,4
753.25 ND
753.25 ND
4
4.86
NA NA 739.07
NA NA 738.39
97
0/9
753.25 ND
753.25 ND
8.82
0.
D W4 3/25/96 749
ND
NA
NA
NA 734.4
NA 743.14
5 NA NA 737.86
(Type III) 211I197 749,
5/13/97 7
ND
ND
.97 NA NA 733t84
2.76 NA NA 740
615/97 753.40 ND
.47 NA NA 737.9
7/31 /97 753.40 N13 15
8/6/97 753.40
5
NA
NA
NA 7
NA 737.80
97 7
ND 19.64 NA NA
733.76
0/98 7.53.40
1 12.30 NA NA.
D 2 14
(Type 1I1) 5/1"1/97
6/5
7/31/97
6697
97
0
ND 12.15
ND 13.7'
ND 14.40
ND 17
ND 11.i5
cu
NA
NA
NA
NA ._
NA
NA
NA
NA
NA
NA
NA
NA
NA
NA
741
734
739.9'
738.34
738,19
737.66
7
740.
P!EDM© i"P GEOLOGIC, P.C. Page 4 of 5

DMW-3
(Type 111)
Date
2/ 11 /97
5/13/97
OC_.
Elevation
1)
749.22
752.82
TABLE 2 (continued)
GROUNDWATER LEVEL DATA
BP Service Station No. 24180
516 W. Sugar Creek Rd.
Charlotte, North Carolina
Depth to
NAPL
(ft. below TOC)
6/5/97
7/31/97
8i'6/97
97
2/10/98
752.82
752.82
752.82
752.82
752.82
ND
ND
ND
ND
Depth to
Groundwater
(ft. below TOC)
14.83
11,87
13.86
14.31
14.7
8.56
10.28
NAPL
Thickness (ft)
NA
NA
NA
NA
NA
NA
NA
NAPL Surface
Elevation
(1)
NA
NA
NA
NA.
NA
NA
NA,
Groundwater
Elevation (1)
734.39
740.95
738.96
738.51
738.03
734.26
742.54
NOTE: monitoring wells re -surveyed in June
(1) Relative to site -established datum
NAPL = Non -aqueous phase liquid
TOC = Top of casing
NA = Not applicable
ND = Not detected
NM = Not measured
997.
PIEDMONT GEOLOGIC, P.0 Page 5 of 5

ATTACHMENT F
WATER TABLE CONTOUR MAP

sidewalk
744
curb
Hefner
Residence
sidewalk
sidewalk
742
curb
curb
sidewalk
LEGEND
MW-1
742,43 I i TYPE IIMONITORING WELL WITH GROUNDWATER ELEVATION
DMW-1
(741.1 Q) TYPE RI MONITORING WELL WITH GROUNDWATER ELEVATION
744 WATER TABLE CONTOUR
APPARENT GROUNDWATER FLOW DIRECTION
POTENTIOMETRIC GRADIENT A —A'
CINDEREL
corner gasoline
UST area
742,43
R©AD
idewo k
dmwi iSi
(741.10)
°smolt driyewaj fo
eap
mw
741.42
p
nlet
to
dumpster pad
SCALE: 1" = 40'
40'
80'
T
PIEDMONT GEOLOGIC, P.C.
Environmental Consultants
a 82 1
9-
Water Table Contour Mop: 2/10/98
BP Service Station Nay. 24150
BP Oil Co.
9720
Ft(head) 2.0 ft. 0.02
F#(horizontoli) 106 ft.
Bose troop from surrey by
J.L. Haines & Asaoe, (6/117
PD
Sugar
N.C.
k tRd

ATTACHMENT
C UD CORRESPONDENCE

D JUN 1 1 1998
June 8, 1998
Mr. Jerry Eplin
CRA Services
420SC Stuart Andrew Blvd.
Charlotte, NC 28217
Subject: Groundwater Discharge ,- BP Oil Company
Dear Mr. Eplin:
This letter is to inform you that at this time, Charlotte Mecklenburg Utilities does not have a program in place for
permitting or accepting groundwater or water from de -watering projects. Further, the sanitary sewer system is
already limited in capacity and cannot accept this discharge.
If you have any questions or if you need additional information, please call me at 391-5100.
Sincerely,
uelnilye A. Townsend, P.E.
System Protection Division Manager
cc:file
Charlotte -Mecklenburg Utilities
System Protection Division • 5100 Brookshire Boulevard • Charlotte, NC 28216 • 704/394-9284