NCG510225_Regional Office Historical File Pre 2018

ANA,
NCDENR
North Caro ina Department of Environment and Natural Resources
Division of Water Quality At4tE t
Michael F. Easley, Governor William G. Ros,R ec etary
AIan W. Klimek; ector
June 7, 2005
Mr. Ken Johnson
PSNC Energy
P.O. Box 1398
Gastonia, North Carolina 28053
JUN
MOS
Subject: Rescission of Certificate of Coverage NCG510225
Public Service Co, remediation site
Gaston County
Dear Mr. Johnson:
Division staff has confirmed that the subject permit is no longer required, as groundwater remediation
is no longer required at this site. Therefore, in accordance with your request, Certificate of Coverage
NCG510225 is rescinded, effective immediately.
If in the future you wish to again discharge wastewater from this site to the State's surface waters,
you must first apply for and receive a new NPDES permit. Discharge of wastewater without a valid
NPDES permit will subject the responsible party to a civil penalty of up to S25,000 per day.
If you have questions about this matter, please contact Charles Weaver of my staff at the telephone
number or address listed below. You may also contact the Mooresville Regional Office at (704) 663-
1699.
Sincerely,
cc: Central Files
Mooresville Regional Office Mike Parker
NPDES Permit file
Fran McPherson, DWQ Budget Office
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
512 North Salisbury Street, Raleigh, North Carolina 27604
1nternet: h2o.enrstate,nc,us
Phone: [phone]# 3, extension 511 / FAX [phone]
charlessweaver@ncmail,net
One
NorthCarolina
Naturally'
An Equal Opportunity/Affirmative Action Employer - 50% Recycled/10% Posi Consumer Paper
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State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
Rodney W. Myers
Public Service Company of NC, Inc.
P,O. Box 1398
Gastonia, NC 28053
Dear Permittee:
July 28, 1997
Subject: Certificate of Coverage No. NCG5t0-225
Renewal of General Permit
Public Service Company of NC, Inc.
Gaston County
fl
F93
In accordance with your application for renewal of the subject Certificate of Coverage, the Division is forwarding
the enclosed General Permit. This renewal is valid until September 30, 2001.
This permit 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. If any parts, measurement frequencies or sampling requirements contained in this pelinit are unacceptable to
you, you have the right to request an individual permit by submitting an individual perrnit application. Unless such
demand is made, this certificate of coverage shall be final and binding.
The Certificate of Coverage for your facility is not transferable except after notice to the Division. Use the enclosed
Perrnit Name/Ownership Change form to notify the Division if you sell or otherwise transfer ownership of the
subject facility. The Division may require modification or revocation and reissuance of the Certificate of Coverage.
If your facility ceases discharge of wastewater before the expiration date of this permit, contact the Regional
Office listed below at [phone]. Once discharge from your facility has ceased, this permit may be rescinded.
This permit does not affect the legal requirements to obtain other permits which may be required by the Division of
Water Quality, the Division of Land Resources, Coastal Area Management Act or any other Federal or Local
governm.entai permit that :may be required.
If you have any questions concerning this permit, please contact the NPDES Group at the address below.
Sincerely,
A. Preston Howard,
cc: Central Files
Mooresville Regional Office
NPDES File
Facility Assessment Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535 [phone] FAX [phone] p& dem,ennr,state,nc.us
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STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
GENERAL PERMIT NO. NCG510000
CERTIFICATE OF COVE A GE NO. NCG510225
TO DISCHARGE PETROLEUM -CONTAMINATED GROUNDWATER AND
SIMILAR WASTEWATERS UNDER THE
NATIONAL POLL ANT DISCHARGE ELIMINATION SYSTEM
Jn 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
Corrunission, and the Federal Water Pollution Control Act, as amended,
Public Service Company of NC, Inc.
is hereby authorized to discharge treated wastewater from a groundwater remediation system
from a facility located at
Public Service Company of NC, Inc.
Cox Road At Franklin Avenue
Gastonia
Gaston County
to receiving waters designated as subbasin 30836 in the Catawba River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions set forth
in Parts 1, II, III and IV of General Permit No. Ncc5l0000 as attached,
This certificate of coverage shall become effective August 1, 1997,
This certificate of coverage shall remain in effect for the duration of the General Permit.
Signed this day July 28, 199,
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Erwiromnental Management Commission

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
June 12, 1997
CERTIF1ED MAIL
RETURN RECEIPT REQUESTED
17"
RODNEY W MEYERS
PUBLIC SERVICE COMPANY OF NC
P 0 BOX 1398
GASTONIA NC 28053 1398
Subject: Denial of Request to Allow to Expire
NPDES General Permit No, NCG510225
Public Service Co. of NC
Gaston County
Gra
Dear Mr, Meyers:
Reference is made to your request for not renewing the subject NPDES General Permit.
Staff of the Mooresville Regional Office Groundwater Section have recommended to deny your
request concerning this permit. Therefore, the Division of Water Quality cannot rescind the
subject permit at this time.
Please contact Barbara Christian, Groundwater Regional Supervisor, Mooresville Regional
Office at 704/663-1699, as soon as possible, to discuss your options with this permit Coverage
under this NPDES Permit would still be required in the event that additional operation of the
treatment facility is required and discharge of wastewater occurs.
Within 30 days receipt of this notice, you are requested to renew this permit. Failure to
renew this permit within this time frame may subject the facility to .the assessment of a civil
penalty. Your NPDES Permit will expire on July 31, 1997.
Please be aware that operating a wastewater treatment works without a valid 'NPDES Permit
will subject the facility to a civil penalty of up to $10„000 per day.
Sincerely,
A. Preston Howard, Jr., P.E.
cc: Gaston County Health Department
Groundwater Section - Permits & Compliance Unit - w/attachments
Mooresville Regional Office -Groundwater Section - w/attachments
Mooresvllle Regional Office -Water Quality Section - wiattaclunents
Corripliance/Rescission Files - wiattachrnents
Central Files- w/attachments
),O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
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DIVISION OF WATER QUALITY
GROUNDWATER SECTION
March 20, 1997
MEMO UM
TO: Robert Farmer
THROUGH: Bob Sledge
FROM: Bob Cheek ,f_v
RECEIVED
MAR 2 1 1991
FACILITIES ASSESSMENT UNIT
SUBJEC NDPES and Non -Discharge Permits Where the Groundwater Section Recommends
or Denies Rescission
In response to our meeting ofFebruary 28, 1997, the following is a list of both NPDES permits and
Non -Discharge permits, same ,of which appeared on the printouts provided by Robert Farmer, that
have either received approval or denial of recission from both the Regional, and Central Groundwater
Offices. Please note that those permits with dates beside of them have already been resolved.
NDPES PERMITS
NC0083461
NC0084107
NCG510058
NCG510072
NCG510076
NCG510085
NCG510092
NCG510102
NCG510125
NCG510127
NCG510129
NCG510130
VNCG510143
NCG510146
NCG510160
1/NCG510169
NCG510175
NCG510195
NCG510179
NCG510195
NCG510225
NCG510243
NCG510244
vNC G510247
;,o/NCG510338
iNCG510346
Ace Chemical Corp.
Fina Oil
Emro Marketing Co.
The Pantry, Inc.
Harrison Oil Co.
Eastern Fuels, Inc.
Franklin Baking Co.
Speedway/Starvin Marvin
Wysong and Miles Co.
Eanes Oil Co.
W.K. Hobbs/Princess Gulf
Williams Oil Co.
Holden Oil Co.
Fisher Oil Co.
Amoco Station No. 6223
John Small Exxon
Crown Central Petroleum
Norfolk Southern RR Co.
Jordan Oil Co./Hot Spt5
Norfolk Southern RR Co.
Public Service Co. of NC
Crown Petroleum Corp.
NCDOT
Denton's Quick Lube
Petroleum World/Cloer's
Riegelwood Exxon
Mecklenburg
Robeson
Mecklenburg
Columbus
Martin
Bertie
New Hanover
Martin
Guilford
Person
New Hanover
Cleveland
Granville
Craven
Burke
Beaufort
Wake
Pasquotank
Haywood
Pasquotank
Gaston
Granville
Montgomery
Vance
Burke
Columbus
RESCISSION STATUS
Groundwater recommends denial
Rescinded 2/3/97
Groundwater recommends rescission
Rescinded 1/31/97
Groundwater recommends denial
Groundwater recommends denial
Rescinded 2/3/97
Rescinded 2/3/97
Rescinded 1/15/97
Rescinded 2/3/97
Rescinded 1/29/97
Groundwater recommends rescission
Groundwater recommends rescission
Groundwater recommends denial
Groundwater recommends rescission
Groundwater recommends rescission
Groundwater recommends denial
Groundwater recommends denial
Permittee requested renewal 2/4/97
Groundwater recommends denial
Groundwater recommends deniall,
Rescinded 2/13/97
Groundwater recommends rescission
Groundwater recommends denial
Groundwater recommends rescission
Groundwater recommends rescission

haries H, Weaver,
Division of Water
PIE Group
P.C. Box 23
Raleigh, NC 27616 0535
Q Section
Renewal 'FIDE Per No "7,C} f 1 225
Gaston Coon
Dear NIL Weaver:
Attached is the renewal
system has been ceased
no further action at this
December p, ld
per rnit Reran fir site number NCG510225. The operation of this rernediation
due to NCDEFENR regulations, This site is ranked a category "E„ digit requires
three, therefore, permit renewal is not necessary,
f you have any further clues
At
achment
ns, pie se advise
Sincerely
Rodney `.
Directo :-Transtnassion Distribtttin Planning
00 Cox . Past atti Box 1398. Gasta s, " rih r o
CrCreativity in Energy

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
April 25, 1997
RODNEY W MYERS
PUBLIC SERVICE COMPANY OF NC
P.O. Box 1398
Gastonia , NC 28053
Subject: Renewal of NPDES Permit No. NCG510225
Gaston County
Dear Permittee:
MAY
aii.EIFEE,
kf..,,E,:.E:TEEEEETEE
In accordance with your application for permit renewal, the Division is forwarding the subject NPDES general
permit for petroleum contaminated groundwater remediation systems. This General Permit is issued pursuant to the
requirements of North Carolina General Statute 143-215,1 and the Memorandum of Agreement between North
Carolina and the US Environmental Protection Agency dated December 6, 1983 and as subsequently amended.
The Certificate of Coverage previously issued to your facility is now valid under the revised General Permit for
discharges associated with groundwater remediation systems (NCG510000 - issued August 22, 1996). The new General
Permit is more comprehensive, in that it covers remediation of groundwater contaminated with heavier fuels (such as
diesel, fuel oil, and kerosene) as well as gasoline contamination. Please note that the permit has three effluent
limitations pages. The type of contamination at your site (gasoline only, heavy fuels only, or gasoline and heavy
fuels) will determine the effluent limitations for your discharge.
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to you, you
have the right to request an individual permit by submitting an individual permit application. Please take notice
that the previously issued Certificate of Coverage is not transferable except after notice to the Division of Water
Quality, The Division of Water Quality may require modification or revocation and reissuance of the Certificate of
Coverage,
This permit does not affect the legal requirements to obtain other permits which may be required by the Division of
Water Quality or permits required by the Division of Land Resources, the Division of Coastal Management, or any
other Federal or Local governmental permit that may be required.
If you have any questions or need additional information, please contact Charles Weaver at telephone number (919)
733-5083, extension 511,
Respectfully,
A. Preston Howard, Jr., P.E.
cc; Central Files
Mooresville Regional Office
Permits & Engineering Unit
Facility Assessment Unit

r,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
No ve.m ber 21, 1994
Mr. Rodney Meyers
Public Service Company of N.C.
P,,O, Box 1,398
Gastonia, NC 28053-1398
NA''..FUR.M.,
NOV 23 nt
DIVISWN OF EIVINHAWAI. iLrFPFUElfi
MOORISVILLE LUAU Una
Subject: General Permit NCG5 i 0000
Cert. of Coveragc. NCG510225
Public Service Company of N.C.
Gaston County
Dear Mr, Meyers:
In accordance with your application for an NPDES discharge permit received September 6, 1994,
by the. Division, we are herewith forwarding the subject Certificate of Coverage under the state-NPDES
general permit for the construction and operation of a (1.011,52 N'IGD groundwater emediation system
consisting of: a 15 gpm oil/water separator, a four -stage air stripper with a 150 scfm blower, twio 200
pound activated carbon units in series and one set of final approved plans and specifications.
.Authorization is hereby granted for the construction and operation of this system with discharge of treated
wastewater into Duhart's Creek in the Catawba River Basin,. 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,
11t.tny Fins, measurement frequencies or sampling requirements contained in this general permit
are unacceptable to you, you have the tight 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 IL E.4addresses 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 Paragrriph 2 of NPDES
Permit No. NC:61511(1000, and shall he subject to revocation unless the wastewater treatment facilities are
constructed in accordance, with the conditions and limitations specified in Permit No, NCG51(..)(100.
In the event that the facilities fail to perform :sitisfactortly, including the creation of nuisance,
conditions, the Perminee shall take immediate corrective action, including those as may he required. by this
Division, such as the construction of additional or replacement wastewater treatment or disposal facilitics„
The, Mooresville Regional Office, telephone number [phone], shall be notified at least
forty-eight (48.) hours in advance of operation of the installed facilities so that an M-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„in, on Monday through Friday, excluding State Holidays.
P.a Box 29535, Rale,iqh, Ncoh 0aroina 27626-0535 Telephone [phone] FAX [phone]
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Permit Number NCG510225
Public Service Company of N.C.
�Novernbe�r 14, 1994
Page 2
Upon completion of construction and prior to operation of this permitted facility, a certification
must he 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 specific
life of the facility.
be mail tined oti tile; by the Pe rmitt.ce for the,
The Operational Agreement between the Pe.rmittee and the Environmental Management
Commission is incorporated herein by reference and is a condition of this Permit. Noncompliance with the
terms of the Operational .Agreement shall subject the Permittee to all sanctions provided by G., S. 143-
215.6 for violation of or failure to act in accordance with the terms and conditions of this Permit.
Failure to abide by the requirements contained in this Authorization to Construct may subject the
Per tee to an enforcement action by the Division of Environmental Management in accordance with
North Carolina General Statute 143-215.6A to 143-215.6C.
rIhe issuance of this permit does not preclude the.Permittec 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 Greg ;Nizich, telephone
number 9197733-5053.
cc: Mooresville Regional Office,
Training and Certification Un
Facilities Assessment Unit
Mr, Larry Geis, ESE, Inc.
Quality
Original
Sincerely,
Sig
�d avid Sig y
A Goodrich
A. Preston Howard, Jr., P.E.

Permit Number NCG510225
Authorization to Constrict
Public Service Company of N.C.
November 14, 1994
Engineer's Cerntc n
, 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.
Project Name
Lo.catirtn
for the
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
CERTIFICATE OF COYLRAGI NC510225
TO DISCHARGE PETROLEUM CONTAMINATED GROUNDWATER AND SIMLLIAR WASTEWATERS
UNDER THE
NATIONAL Pt I TANT III C IARGE JL11V INATION 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,
Public Service Company of North Carolina, Inc.
is hereby authorized to construct and operate a groundwater treatment system consisting of an coil/water separator, air
stripper, and activated carbon filtration for petroleum contaminated groundwater with the discharge of treated
wastewater from a facility located at
Public Service Company - Cox Road
Gaston County
to receiving waters designated as Duharts Creek in the Catawba River Basin
in accordance with the effluent limitations, monitoring requirements, and other conditions se
and IV of General Permit No. NCG00510000 as attached..
This certificate of coverage shall become effective November 11 1994
This Certificate of Coverage shall remain in effect for the duration of the General Permit.
Signed this day November 11, 1994
Origin iI Y By
David A.
orth
in P
A, Preston Howard, Ir., P=E., Director
Division of Environmental Management
By Authority of the Environrnernai Management Commission

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GASTONIA NORTH, N. C,
GA ',",1040,,N, 1,5 00A ut44/A144:3,is,
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M 3 4 2 5 11 S1114. SEPiES 5 4 2

SOC PRIORITY PROJECT: Yes No X
If Yes, SOC No.
To: Permits and Engineering Unit
Water Quality Section
Attention: Greg Nizich
Date: September 16, 1994
NPDES STAFF REPORT AND RECOMMENDATION
County: Gaston
Permit No. NCG510225
PART I - GENERAL INFORMATION
1. Facility and Address: Public Service Company
of North Carolina
Post Office Box 1398
400 Cox Road
Gastonia, North Carolina 28053-1398
2. Date of Investigation: 09-16-94
3. Report Prepared By: G. T. Chen
4. Persons Contacted and Telephone Number: Mr. Rodney W. Myers,
Manager -Engineering Codes and Standards; [phone]
5. Directions to Site: From the intersection of East Franklin
Boulevard (US Highway 29/74) and Cox Road (SR 2200) in the
City of Gastonia, Gaston County, travel north on SR 2200
approximately 0.15 mile. Public Service Company of North
Carolina is located on the right (east) side of the road.
6. Discharge Point(s). List for all discharge points:
Latitude: 35° 15' 44" Longitude: 81° 08' 00"
Attach a U.S.G.S. map extract and indicate treatment facility
site and discharge point on map.
USGS Quad No.: F 14 SW USGS Name: Gastonia North, NC
Site size and expansion are consistent with application?
Yes X No If No, explain:
8. Topography (relationship to flood plain included): Sloping
south towards receiving stream at the rate of 5-7%. The site
for a proposed groundwater remediation facility is not in a
flood plain.

Location of nearest dwelling: Commercial/Industrial area, no
dwellings with 1,000 feet of the proposed facility.
10. Receiving stream or affected surface waters: Duharts Creek
a. Classification: WS-V
b. River Basin and Subbasin No.: Catawba and 03-08-36
c. Describe receiving stream features and pertinent
downstream uses: The proposed discharge is to Duharts
Creek via a subsurface storm drainage system on the
Company's property. Duharts Creek, which adjoins the
Company's property, is approximately 15 feet wide and 4
to 5 feet deep. Downstream users are unknown.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 0.01152 MGD*
(Ultimate Design Capacity) *Based on information
provided in the application.
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.
. Please provide a description of proposed wastewater
treatment facilities: The proposed groundwater
remediation facility will consist of a series of recovery
wells with pneumatic pumps and a 240 linear foot recovery
trench, an oil/water separator, low -profile type diffused
air stripper with effluent tank, and an activated liquid
carbon adsorption unit with pre -filter.
Possible toxic impacts to surface waters: No toxic
impact to surface waters is expected if the contaminated
groundwater is properly treated prior to discharging.
h. Pretreatment Program (POTWs only): N/A.
g•
in development: approved:
NPDES Permit Staff Report
Version 10/92
Page 2

should. be required: not needed:
Residuals handling and utilization/disposal scheme: No solids
disposal scheme is available at this time. The applicant
needs to submit a solid waste management plant to DEM for
approval, if solids generation is expected.
a. If residuals are being land applied, please specify DEM
Permit No.:
Residuals Contractor:
Telephone No.:
b. Residuals stabilization: PSRP:
RFRP:
Other:
c. Landfill:
d. Other disposal/utilization scheme (specify):
Treatment plant class
sheet): Class T, see a
ication (attach completed rating
ached rating sheet.
4. SIC Code(s): 4922
Wastewater Code(s) of actual wastewater, not part
facilities, i.e., non -contact cooling water discharge
metal plating company would be 14, not 56.
Primary: 66
Main Treatment Unit Code: 56008
Secondary:
cular
rom a
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: None,
Important SOC, JOC or Compliance Schedule dates: (please
indicate) N/A.
Submission of Plans and Specifications
Begin Construction
NPDES Permit Staff Report
Version 10/92
Page 3
Date

Complete Construction
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: Limited land area available for a spray
irrigation system.
Connection to Regional Sewer System: The City of Gastonia
does not accept treated groundwater into its sewer system.
Subsurface: Site soil is not suitable for a subsurface
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? The proposed treatment facility is to
remediate groundwater that has been contaminated with unleaded
gasoline. Contaminated groundwater will be recovered and
treated properly prior to discharging to Duharts Creek via an
underground storm drainage system on Company's property. No
hazardous materials will be used at this facility. Impacts,
if any, on the environment will be minimal.
6. Other Special Items: None.
PART IV EVALUATION AND RECOMMENDATIONS
Public Service Company of North Carolina requests an NPDES
General Permit for the discharge of treated groundwater from a
proposed groundwater remediation facility. Soil and groundwater
have been contaminated with petroleum hydrocarbons due to the
leakage of the fuel pipe of an underground storage tank.
On -site investigation revealed that the proposed discharge is
to a subsurface storm drainage system on Company's property. The
storm drain enters Duharts Creek, WS-V waters in the Catawba River
basin.
Pending final review and concurrence by the SERG, it
recommended that the subject request be approved.
NPDES Permit
Version 10/92
Staff Report
Page 4

Signature Repo ° Prepares
Date
NP S Permit Sta
Version 10/92
Re
Page

54
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WASHINGTON, 0, C. 20242
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Secondary highway,
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ROAD CLASSIFICATION
Light -duty road, hard or
improved surface -
Unimproved road
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81°07'30"
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GASTONIA NORTH, N. C.
SW/4 GASTONIA 15QUADRANGLE
N3515—W81075/7,5
1970
AMS 4754 I SW --SERIES V842

IllATING SCALE FOR CLAS
Name of Facility:
Owner or Contact Person:
Mailing Address:
County:
Present Classificati .,
NPDES Per. No, N .6-10,r No
Rated by: 6 7 ° t.ti tt
Reviewed by:
CATION OF WATER POLLUTION CONTROL SYSTEMS
e4
i4 yt°,r .
Telephone:
New Facility_ '
I'i c. Per, No.WQ
Telephone:
Health Dept.
Regional Office
Central Office
Grade:
ORC: _ w
Check Classifi
Wastewater Class
114Peace= $ S A 3.
*wen MNIPee
2.
3
4, „
6
d ..
7 and disposal:
disposal:
Spray Irrigation
III rV
Facility.
Dopt.Per No., , „ ..
Dale:
Telephone:
Telephone:
Telephone:
Telephone:
Land Application
Total Points:
"MAY Faw'3A'Ttt„X'I CLAS CATgN
(dam M units that apply)
1 preliminary tree:mord (d.fln firm no, 32 )
a,, lagoons
3, septic tanks.
4,_ _._..t*s p Sinks
5, pumps
t sand esters
7, snw trapIMroS rtor
e , . oliwat.r separators
e disinfection
10, (Ivories! ! eddltion for nutrienthigas control
11 . spray Irrigation d wasiewster
In addition to the "bore classifications. pretreatment •t wastewater In emcees •t "mass
be rated using the point feting system and will require an operator with en appropriate
LAND APPLICATION/RESIDUALS CLASSIFICATION (Apples or* to porn& holde)
1. Land applicsdion d bio.dids, residuals or oorcaminas.d sobs on a designated siie.
Thor flowing systems st'isr be assigned a. Glass
compiex, to require consideration by ltre Commission an a case -by -ow
1. Oil/water Separator Systems consisting only of �'� tanks. dosing itppscrut. panties,
s. Septic 'Tank/Sand Flier Systems aarsiating only septic
- *act discharge; disinfection, n.�o.aa.ry chemical tneattrrdMa Seer
a Lagoon Systems consisting only .f preliminary treatment, legoors� pumps'
algae to nutrieni oartrof, wd dime! decaharpe;
S ClosedClosed4cop Recycle Systems.
Groundwater nemadiadbn Systems oonsistinp only of ot►wster separators,
arid deposal;
eAquaculture operations wah discharge to sotem warleric
. Water Plant sludge hendiGrg and back -wash water tredment.
Seafood processing consisting of screening and disposal, In.d after Jay 1,
Ir, Singl.-fanny d dine stems' with the 'sorption of Aerobic Tr.stmerd Ur classifiedclassified, wfi b. classified I p.rrn
1993 re 1 upon inspection by the Divbso4, x it found that the sisters is not being adequately operated or msirdeined. Such
systems wit be notlrwd d the classlication or r.dasallica ion by the Commissioa% to vollIno,
"hail
cation,
the tectinclogy Is unusually
-stepping, carbon sdsorprion, disinfection

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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., RE., Director
/1'
September 12, 1994
Mr, Larry Geis, Project Manager
Environmental Science & Engineering, Inc,
9741-F Southern Pine Boulevard
Charlotte, NC 28273
Dear Mr. Geis:
1=4. NI Pt
RONMENT, REA r,TH,
ATURAL RESOURCES
SEP 13 1994
DIVISION OF ENVIONMENTAL MANAGNENT
MOORESVILLE REGIONAL OFFICE
Subject: General Permit #NCG5 10225
Public Service Company of NC
Gaston County
This is to acknowledge receipt of the foliowing documents on 9/06/94:
- Notice of Intent Form and attachments
- Application Processing Fee of $400.00 and Authorization to Construct 0.
The following item is needed before review can be completed:
- Verification that the specific air stripper model proposed is Model 134 L
Please note that the General Permit is being revised to limit the monthly average effluent concentration for
benzene to 1.19 p.g/1 for discharges into WS streams. The changes should be completed by early 1995.
This application has been assigned to Greg Nizich (919-733-5083) of our Permits Unit for review. If the
requested information has not been received by the Division before October 15, 1994, the Division may
return the subject General Permit request as incomplete.
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 the review person listed above.
Sincerely,
oleen Sull , Supervisor
Permits and Engineering
cc: Mooresville Regional Office
dney Myers, PSNC
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

N.C. I)EPT. OF
ENVIRONMENT, HE.\LTH,
& NATURAL RESOU1;C'I;S
SEP 13 1994
State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27611
DIVISION OF ENVIRONMENTAL MANA&F°: E" 1
MOORESVILLE REGIONAL OffICE
James G. art, Governor A. Preston Howard, Jr., P.E.
William W. Cobey, Jr., Secretary Acting Director
TICE ►F INTENT
National Pollutant Discharge Elimination System
Application for Coverage under General 'Permit NCG510000; Groundwater remediation projects
designed to treat petroleum contaminated groundwater.
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;
p'�,hTir, S
P.O. Box
virP Company.nf Nnrth.Carolina
400 Co* Road
Gastonia
North Carolina
28053-1398
Gaston
C. Location. (Attach map delineating general facility location)
(1)Street Address; 400 Cox Road
(2)City;
(3)State;
(4)County;
Gastonia
North Carolina
Gaston
Telephone Number; ( 7 0 4) 8 3 4 - 6 4 3 9
2. Facility Contact:
A. Name;
B. Title;
C. Company Name;
D. Phone Number;
Rodney W. Myers__
Manager -Engineering Codes and Standards
Public Service Company of North Carolina
( 704) 834 - 6439
Application type (check appropriate selection):
A. New or Proposed; X
B. Existing;
C. Modification;
(Describe the nature of the modification):
If previously permitted, provide permit number
and issue date
4. Description of discharge
A. Please state the number of separate discharge points..
Mx] ; 2,[ l ; 3,(l ; 4,(l ; „EL
Page 1

B. Please describe the amount of wastewater being discharged per each separate discharge point:
1:11.5 2 °gallons 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): ]anuary [x]; February [x]; March [X]; April [X],
May lx];June [x]; July [x]; August [I; September [ ];October ]: November [X]; December [x].
4. How many days per week is there a discharge (check the days the discharge occurs)
Monday Ix], Tuesday [x], Wednesday [4, Thursday [x1,Friday [N], Saturday [A, Sunday [x].
5. How much of the volume discharged is treated? (state in percent) 1 0 Q%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*; Please See Attachment 1 of 3
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 levels to 1 ppb should be used to detect these
compounds).
E. Please check the appropriate type of treatment being used to
1. Oil/Water ' Separator; x
2. Air Stripper; x
3. Diffused Aeration;
4. Activated Carbon Absorption; x
5. Other(specify); Pre f
the groundwater;
for sorsti
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
stepper. See Attachment, Page 1 of 3
7. What are the well sizes and how many exist. See Attachment, Page ): of 3
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. See Attachment, Page 2 of 3
10. Is there an access to the effluent for sampling?( either an open pipe or a valve to obtain a
sample) See Attachment, Page 2 of 3
Attachment, Page 2 of 3
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. See Attachment, Page ? of 3
6. Name of receiving water or waters; Duhartis Creek Classification: I4S-V
(Attach a USGS topographical map with all discharge point(s) clearly marked)
7. Is the discharge directly to the receiving water?(Y,N) N (Storm Drain)
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 storrn sewer to its discharge
point, if a storm sewer is the only viable means of discharge.) See Figures 1 and 2
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;
See Attachment,
Page 2 of 3
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 Person Signing
e
Title
NORTH CAROLINA GENEYAL STATUTE 143-215.6 B (i) PROVIDES THAL
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

ATTACHMENT
NOTICE OF INTENT
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
APPLICATION FOR COVERAGE UNDER
GENERAL PERMIT NCG510000
PUBLIC SERVICE COMPANY OF NORTH CAROLINA, INC.
GASTONIA, NORTH CAROLINA
Description of Discharge
D. The type of wastewater to be discharged at the discharge point is treated
groundwater that has been previously contaminated with unleaded gasoline. The
petroleum constituents will be removed via the proposed treatment system. Free
product will be recovered, if present, and separated by the oil/water separator.
The maximum concentrations of chemical constituents analyzed during site
assessment activities are shown in Table 1. Contaminants that are typical of
gasoline or gasoline additives that are not listed in Table 1 were below regulatory
standards. These concentrations were used in the design of the proposed
treatment system.
6. Based on the system design prepared by Environmental Science and
Engineering, Inc. (ESE), the groundwater recovery system will produce a
flow rate of approximately 8 gpm. This groundwater will be treated prior to
discharge by the use of an oil/water separator, low -profile type diffused air
stripper, and activated carbon adsorption. The manufacturer's data and
specifications for each unit are included in Appendix A. The oil/water
separator is a coalescing type, constructed of molded fiberglass with a rated
flow of up to 15 gpm. The separator has a nominal volume of 69 gallons and
should effectively remove oil droplets larger than 38 microns. The oiUwater
separator also has a high level cutoff switch which will be used to disable the
recovery pumps in the event that a high water situation exists.
The low -profile diffused air stripper is manufactured by ShallowTray and will
contain 4 stages. Diffused air will be supplied by an explosion proof blower
at a rate of approximately 37.5 CFM/stage. The removal rates for the
diffused air stripper, according to the ShallowTray Modeler Software
Version 1.4, are based on the concentrations of contaminants and the flow
rate provided by ESE. The modeling summary is included in Appendix A.
Any residual amounts of contaminants will be removed by the activated.
liquid carbon adsorption units. Each carbon unit contains approximately 200
lbs of carbon and will be supplied by Carbtrol Corporation. The
breakthrough time for the carbon units is estimated at 70 days and will be
closely monitored to ensure no contaminants are discharged to the storm
sewer system. The process and instrumentation diagram of the system design
is shown on Figure 4.
7. There are currently eight two-inch shallow groundwater monitor wells, one
type III vertical extent well, and one four -inch recovery well existing on -site

(Figure 2). Additionally, there are three existing nested soil vapor extraction
pilot test wells,.
The groundwater recovery system at the PSNC site will consist of one
existing four -inch recovery well (RW-1), eight new four -inch recovery wells
(RW-2 through RW-9), and a 240 linear ft recovery trench with one
extraction point (RW-10). Approximate placement of the groundwater
recovery system is shown in Figures 2 and 3.
The recovery well pumps will be controllerless pneumatic pumps
manufactured by Clean Environment Engineers (Model AP4). The
specifications for each of these pumps are included in Appendix B. Each
recovery well pump will be supplied air by the use of a compressor as shown
in Figure 4.
Electric submersible pumps will be used to transfer groundwater from the
oil/water separator through the air stripper, and from the air stripper effluent
pump tank through the carbon adsorption system to the discharge point.
These electric submersible pumps will be manufactured by Myers (Model
100MM). All pumps and pump tank locations are shown in Figure 4.
9. The oil/water separator, the air stripper, and the air stripper effluent tank
each contain a high-level cutoff switch which will be connected to the control
panel to close a solenoid valve in the air supply line, which feeds the recovery
pumps, in case of a high water situation. To identify and respond to
operational problems, the remediation system will also be equipped with
telemetry notification equipment. In the event of a high tank liquid level, low
blower pressure, or system shutdown, an override indicator beacon will flash,
and PSNC personnel will notify ESE immediately. ESE will provide bi-
weekly site visits which will allow personnel to repair any equipment
malfunctions or other problems.
10. Access to the effluent for sampling will be provided by a sample port located
immediately beyond the activated carbon adsorption units. The pipe leading
to the discharge point will be open-ended to provide another sampling
location if desired. See Figure 4 for sampling locations..
Nature o Business of Applieant
The Public Service Company of North Carolina site serves as the corporate offices
for the company.
8. Possible Non -Discharged Alternatives
A. Sanitary sewer lines are located within a reasonable distance for wastewater
disposal. However, discussions with City of Gastonia personnel indicate that
although there is no written policy for groundwater remediation system
wastewater disposal to the sanitary sewer system, the city has not accepted
wastewater from these types of facilities in the past. City personnel added that

several remediation system wastewater disposal requests have been submitted,
but none have been allowed to discharge to the sanitary sewer system.
B. Subsurface discharge using injection wells or reinfiltration galleries is a
requirement of closed -loop remedial systems, such as in situ biorernediation.
Aquifer recharge was not considered practical for this site for several reasons.
First, soil permeability tests indicated very low saturated conductivities.
Discharging the amount of water estimated to be recovered would require
numerous infiltration galleries and/or injection wells. Secondly, a recharge
system would require extensive maintenance during the operation of the system,
which might adversely impact site operations. Finally, off -site discharge
alternatives can be implemented with lower capital and operational costs.
C. Spray irrigation for treated groundwater disposal is not a feasible option. The
PSNC facility presently has a lawn irrigation system in place. The system is
designed for use on an as needed basis and, therefore, would not be a useful
discharge alternative,

QUADRANGLE LOCATION
SCALE 1'24 G
c
0
CONTOUR INTERVAL 20 FEET
DATUM IS MEAN SEA LEVEL
Mal
7'0Ci} FEET
KILOMETER
Fi I
TOPOGRAPHIC SITE LOCATION MAP
PUBLIC SERVICE COMPANY OF NORTH CAROLIiA
GASTONIA. NORTH CAROLINA.
SOURCE: U.S.G.S, GASTONIA NORTH QUADRANGLE. 1970
ENVIRONMENTAL
SCIENCE &
ENGINEERING. INC..
CHARLOTTE. NC

Table 1. Existing Con ininartt Concentrations andCleanup Tart
(Project No. C0029701)
Conte inant
benzene
toluene
ethylbenzene
xyleries
rnethal test -butyl ether
naphthalene
indeno (1, , -ed) pyrene
isopropyl ether
G
Existing
Concentration*
0, t' `` ppb
33, 4i ppb
2,800 ppb
16,100 ppb
1,300 ppb
277 ppb
4.4 ppb
1,7t0°pp►
*Concentrane listed is th
deice insamples all t t lro the PSNC site

r SE.PARATO
CONS!STt,'J(.3 r 1
2
SH .Q I_ OC T`, 3P?tCA rF() CF F/&RG$
253 CHOf'3CRGLASS AS A ML
POc 7S
E ENTIRE EX1ERIO? SURFACE OF THE SEPARATOR SHALL t E COVERED WITH A
CONTINUOUS LAYER OF CHEMICALLY RESISTANT, UL1RAV)OLET` 5TM3\UZCO.
fall SiCR GEL COM
.6
ITEM
2
3
5
6
8
9
10
11
1 SEf ARAT(0'+ CH4MEI R
REIMCVABLE (J I PAK.
I AUJUST$6LE OIL SKTIo nIC r'r'EI."1
EFFLUENT IS'EIR
EFE'ZuEN7 5'1EE RAFFLE
EFFLUENT C4'IEER
RE1.1OLxBLE LII) Y11T)l HWdC,ES
ROTARY PIPE SKIMMER
1 SLUDGE COLLECT(ON CHA1.4BER
20
Y d1J7LLTT, 1 ¢
TYPE 01;:R '>LPF.,PL.1QR
Y r'IPE 5K11.1PJ �'R
DRAW.NC,
iNC.
u
©C3°^£1O4

NR"T FL
z
0

V 4w
t
ShalloWfr
low profile air strippe
System Performance Estimate
Client and Proposal Information:
S.E. North Carolina
Untreated Model 1311
Contaminant Influent Effluent
Water
Alr(lbeihr)
% removal
BTEX (as Benzene) 69400 ppb
20000 ppb
Ethy Benzene 2800 ppb
16100 ppb
277 ppb
1300 ppb
Benzene
o-Xylene
Naphthalene
MTBE
5814 ppb
0.254456
91.6229%
1676 ppb
0.073328
91.6229%
209 ppb
0 010369
92,5607%
1035 ppb
0 060287
93.5757%
205 ppb
0.000286
26.2824%
743 ppb
0.002229
42.8521%
Toluene 33000 ppb 3186 ppb
0.119309
90.3484%
Model 1321
Effluent
Water
Air(lbsThr)
% removal
390 ppb
0.276162
99.036%
113 ppb
0.079583
99.4386%
13 ppb
0.011153
99.5573%
S4 ppb
0.064212
99,6598%
121 ppb
0.000624
56.5257%
340 ppb
0.003842
73.8729%
246 ppb
0.131074
992548%
Model Chosen:
Water Row Rate:
Air Flow Rate:
Water Temp:
Air Temp:
A/W Ratio:
Safety Factor
Model 1331
Effluent
Water
Air(lbs/hr)
% removal
27 ppb
0.277614
99,9624%
3 ppb
0,080003
99.9524%
1 ppb
0.011201
99,9736%
3 ppb
0.064-416
99.9830%
72 ppb
0.000820
74.3614%
156 ppb
0.004578
08.0551%
19 ppb
0.131982
99.9425%
This report has been generated by ShallowTray Modeler software verslcin1 41 Theo boftware is designed to assist a
in predicting the perforrnanui of a SharrowTray air stripping system The 64ftware arty predict the eyetem
when both the equipment and the software are operated according to the written docurnenbation end standard opera
North Ea e Emironrnental Products, Inc cannot be responsible for incidental or corequeohal damages resulting fitsrn
operation of tether the software or the air stripping equipmerrt Report generated, &ZVI C?5,4
1300
8,0 grit
150 cfrn
530 F
53.0 F
140,2 cu. ft/ cu, ft
25%
Model 1341
Effluent
Water
Air(lbsihr)
% removal
2 ppb
0277714
99.9975%
1 ppb
0.08-0031
99.9975%
<1 ppb
0,011205
99,9984%
<1 ppb
0.064428
99.9991%
42 ppb
0.000940
8-4,8799%
71 ppb
0.004918
94.5390%
2 ppb
0.132050
99.9956°A
ekilled operator
performarrco
the improper
Copyright 1992 North East Environmental Products, inc. 17 Technology Drive, West Lebanon. NH 03784
Voice: 603-298-7081 FAX [phone] All Rights Reserved,

The Low Profile Air Stripping Process
Turbulent frothing
maximizes volatilization
and scours the aeration tray,
Contaminated
water inlet.
Treated water falls
into holding tank.
Air is vented to the
atmosphere or to vapor
phase treatment of choice,
Water travels around
the full length of the
baffled tray, becoming
progressively cleaner.
Seneca Environmental Services
4509 NE 14th Street • Des Moines, Iowa 50313
800-369-3500 • FAX [phone]
'Ixb° holes resist
fouling.
Fan blows air up
through hundreds of
holes into the water.

Low Profile
The discreet size of a ShallowTray' air stripper does
not advertise a contamination site. It is easily
accessed for maintenance and can be installed inside
a building. The system is also ideal as a trailer -
mounted, portable stripper for pump tests, pilot
studies, short-term cleanup, or emergency response.
There is no tower.
Treatment
The ShallowTray process
uses forced draft,
countercurrent air stripping
through baffled aeration
trays to remove volatile
organic compounds
from water.
Contaminated water is
sprayed into the inlet
chamber through a coarse
mist spray nozzle. The
water flows over a flow
distribution weir and along
the baffled aeration tray.
Air, blown up through
3/16R diameter holes in the
aeration tray, forms a froth
of bubbles generating a
large mass transfer surface
area where the contaminants are volatilized. The
necessary contact or residence time to reach
required volatilization is achieved through model
size, addition of trays, and flow rate selection.
be easily cleaned through ports using a washing
wand and pressure washer. Trays can also be easily
removed for a thorough inspection and cleaning.
Full Range Turndown
Not only are ShallowTray systems forgiving of
"surprise" inorganics in the water, they also allow
operation anywhere within the rated flow range. In
fact, as the flow rate is
reduced, performance
increases. Also, as demands
change (stricter effluent
contaminant levels) so can
the ShallowTray system. Its
modular design allows for
the addition of trays which
increase the percent removal
of contaminants.
The air forces a froth of bubbles approxirr :ateCy
6 inches deep on the aeration tray, generagenerating a
lark mass transfer surface area where the
co taaiainants are volatilized.`
n
Air as blown up through',
holes in the aeration tray
undreds ofra " diameter
Resistant to Fouling
ShallowTray systems are resistant to fouling
problems. Treatment trays have large 3/16'rt diameter
aeration holes. In addition, the turbulent action of
the froth scours the surfaces of the tray reducing
build-up of oxidized iron.
If, under extreme conditions, oxidized iron
accumulates or hardness begins to scale up, trays can
No Disposal
ShallowTray systems have
no packing or diffusers to
contend with and no costs
associated with GAC
breakthrough, fouling or
disposal and replacement.
System Size
To determine the system
size required for your site, first identify the flow
rate. This guides you to the ShallowTray Series
needed, As an example, with a flow rate of 30gpm,
select the 2600 Series, which is rated for flows from
1 to 50gpm.
Next, identify the contaminants present and the
removal requirement. Generally, this determines the
number of trays required.

Low Profile AirStrippers Make Sense
Low profile air strippers offer advantages that make them the only
consideration for removal and clean-up of volatile organic compounds. In the
past, the standard approach was using packed stripping towers for this
application. Some of the advantages of the low profile air stripper
configuration when compared to packed towers are:
Low profile Air Strippers
...ciompactsize - systems are able to
fit within a pre-engineered
'building with no visibility of the.
system from outside. The client is
not advertising that there is a
problem at the site with an
unsightly tower.
2. High volatile organic compound
removal rates.
Low maintenance and resistant to
fouling due to large diameter
aeration holes that enhance the
turbulent action, Trays can be
easily removed for clean-up and.
they can also be easily cleaned in
place.
4 The removable sections of the low
profile air strippers make access
easy.
Well suited and sized for small
flow rates.
G. Light weight, modular design
allows equipment to be easily.
relocated enhancing flexibility.
Packed Towers,
Require a tall tower unit that
must be mounted outdoors,.
through a roof, or in an area with
high ceilings. Size of equipment
limits where it can be mounted.
Urban height restrictions might
apply.
2. Requires increased tower height
to achieve higher contaminant,
removals.
Packing can becomefouled with
dissolved minerals. Packing
removal is required for clean-up
that is messy and time consuming.
4. Tower can not be easily accessed
due to height.
5. Equipment size remains large and
unwieldy for all flow rates.
Packed towers require
disassembly for transport.

CARSTRO
WATER PURIFICATION CANISTER
200 POUND ACTIVATED CARBON
OR,00to <VIP -WIC
OUNC, WITIt
P
AAiti
L Ario cx.ITLET
ectitiEcr,ONs we
to,1" COUPLING AtiO
PLutt
uI '4
C T, t tC
T EA.Orr
OPTIONS
Interconnecting
Piping Kit
Flexible 1 1/4" diameter PVC tubing
with boss clamps. Includes inlet
pressure gauge and intermediate
sample valve.
Pre -filter For
Suspended Solids Removal
Pre -filter consisting of a basket filter
piped and mounted on support frame.
Filter is of carbon steel constructiort
ARRANGEMENT (3) L-1 Canisters in series for 10 gpm flow (conlac-t timo @ to gpm 5 rn"
INLET
PRE FILTER
FREssuRE
GAUGES
TYPICAL INSTALLATION
CARBTROL
CARECN CANISTERS
EFFLUENT
Sr‘HPLE INTET-1CONNECTuNG
VALVE
TuElING
39 Riverside Avenue, Westport, CT 06880 .1-800-242- 0 . (203) 226-564.!
5.3 II A j I N
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77 7 1' 7:71,7", -• • — 7 - •• -;„:

s ,b r of C
Nutriber of Tr
al Nun
De
interconnecting
Pre
u
Sample1
Avail
CARBTROL
CORPORACORPORAT.o

AIJ
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CLEAN ENVIRONMENT EQUIPMENT
SPECIFICATIONS FOR THE AP-4 AUTO PUMP
A "CONTROLLERLESS" PNEUMATIC PUMP FOR
TOTAL FLUIDS REMOVAL
SHORT LENGTH. BOTTOM LOADING CONFIGURATION
SHORT AP-4/BL
pagg 1 of 3
The pumping system shall be powered solely by compressed air with all controls located
inside the pump. It shall be capable of removing water and product (e.g. oil, fuels,
solvents, etc.) from a well casing of four (4) inch diameter or greater to depths of at least
250 feet. The fluid Inlet shall be located below the pump body as to take in
water and heavier -than -water products.
Pump
The pump shall have all pump controls inside the pump. There shall be no timers,
bubbler or air valves external to the pump needed to operate the pump, The pump
shall use air only when pushing fluid out of the pump and not use any air
while the fluid is filling the pump. The pump shall have three hoses - a hose for
pressurized air to run the pump; a hose for the exhaust air to exit the pump and a hose
for the fluid to be discharged from the pump. These hoses are to be attached to the
pump using brass quick connect fittings with locking sleeves. The air valves inside the
pump shall be stainless steel poppets. The air valves will be able to pass water
and ninety (90) weight oil without fouling.
The pump shall be able to pump four (4) gallons per minute using 80 psi air and
three (3) feet submergence of the top of the pump. The air pressure to the pump need
only be a maximum of 10 psi greater than the total developed head of the system for the
pump to automatically operate whenever it fills with fluid. When the pump is empty, the
air from the pump shall be exhausted through the exhaust air hose, allowing fluid to enter
the pump. When the pump is full, compressed air is to be fed into the pump through the
compressed air supply hose to push the collected fluid out of the pump. This cycle shall
continue automatically.
Standard materials of construction shall be stainless steel, brass, Delrin, nylon, Viton,
Teflon and FRP.

Short Length AP-4 Bottom Loading Specifications Page 2 of 3
Pump Air Valve Description
1. The pump valve design shall need only two hoses - air input and air exhaust.
2. The pump shall be able to function with inlet air pressures ranging from 5 to 150
psi.
3. There shall be two pump air valves - one for air inlet and one for air
exhaust. These valves shall be of a poppet design with the poppets
moving vertically.
4. The poppets for the pump air valves shall be stainless steel.
5. The pump poppet valves shall be mounted on a lever assembly to
facilitate a mechanical advantage for the poppet valves to actuate
reliably. A float shall activate the lever assembly and thus shift the
poppet valves.
6: Compressor lubrication oil and water shall pass from the compressed air supply
hose thorough the air valves easily. The air valves shall be able to pass 90 weight
oil at 70° F at a rate of at least 8 ounces per minute using 80 psi air pressure.
7. The pump air valve shall use air only when discharging fluid from the
pump. The air valve assembly shall not need a bleeding air supply to facilitate
operations.
8. The air valve shall be able to allow the fluid being pumped to rise up through the
valve when the compressed air source is removed from the pump. The pump
shall thus be able to sit submerged and dormant for at least two (2)
days and to start up readily and continue to function when compressed aft is
again applied to the pump.
Pump Internals
1. The fluid discharge pipe of the pump shall be stainless steel.
2. The fluid discharge pipe of the pump shall serve as the tension member between
the top and bottom of the pump.
3. The spring shall be a stainless steel alloy.
4. The pump shall supply a volume of at least 0.25 gallons per cycle at zero
discharge head and 30 psi air supply.

Short Length AP-4 Bottom Loading Specifications Page 3 of 3
Pump Fluid Valves
1. The outlet of the pump shall be 39 inches or less above the bottom of the pump.
2. The outlet check valve shall be located above the pump body for easy access..
3. The inlet check valve shall be a free-floating, self-cleaning ball check valve,
located at the bottom of the pump.
4. The outlet check valve shall be a free-floating, self-cleaning ball check valve.
Flow Rate
The pump shall be able to remove at least 2.5 gpm with an 80 psi air supply, the top of
the pump submerged 3 feet and pumping against a 15 psi head.
Without any head, the pump shall be able to pump 4.0 gallons per minute with 80 psi air
pressure and the top of the pump submerged 3 feet.
Compressed Air Filter/Regulator
The air filter shall filter the aft to 5 microns and be able to remove some oil and water
from the compressed air. It shall have an automatic float drain. The regulator shall be
able to regulate the compressed air from 0 to 250 psi. The air filter shall have metal
bowls and both the air filter and regulator shall be able to withstand 250 psi air pressure.
Hoses
All hoses supplied with the system shall be of industrial grade. The hoses shall equal or
surpass GOODYEAR INSTAGRIP I hose quality. All hoses shall be color coded and
equipped with non -interchangeable brass quick connect fittings.

AP'-4 SHORT BOTTOM LOADING AUTO PUMP
TOTAL FLUIDS REMOVAL SYSTEM
AIR FILTER/REGULATOR
AIR EXHAUST
p 0� 0 �`
1;6000
FLUID INTAKE
WITH SCREEN
AIR SUPPLY
FLUID DISCHARGE
4' WELL OR LARGER
WATER WITH
DISSOLVED CONTAMINANTS
CLEAN ENVIRONMENT ENGINEERS, INC.
EQUIPMENT FOR FUEL SPILL REMEDIATION
AND GROUNDWATER CLEAN-UP
NM CO LE STREET, SUITE ice
DERYVI IE. CA 94646
FAX 4.415,1
TOTAL FLUIDS REMOVAL
SYSTEM

CLEAN ENVIRONMENT EQUIPMENT
SPECIFICATIONS FOR THE AP-4 AUTO PUMP
A "CONTROLLERLESS" PNEUMATIC PUMP FOR
TOTAL FLUIDS REMOVAL
SHORT PUMP, TOP LOADING CONFIGURATION
SHORT AP-4/TL
Page 1 of 3
The pumping system shall be powered solely by compressed air with all controls located
inside the pump. It shall be Capable of removing water and product (e.g.oil, fuels,
solvents, etc.) from a well casing of four (4) inch diameter or greater to depths of at least
250 feet. The fluid inlet shall be located above the pump body as to take in
water and lighter -than -water products.
Pump
The pump shall have all pump controls inside the pump, There shall be no timers,
bubbler or air valves external to the pump needed to operate the pump. The pump
shall use air only when pushing fluid out of the pump and not use any air
while the fluid is filling the pump. The pump shall have three hoses - a hose for
pressurized air to run the pump; a hose for the exhaust air to exit the pump and a hose
for the fluid to be discharged from the pump. These hoses are to be attached to the
pump using brass quick connect fittings with locking sleeves. The air valves inside the
pump shall be stainless steel poppets. The air valves will be able to pass water
and ninety (90) weight oil at 70°F without fouling.
The pump shall be able to pump three A(3) gallons per minute using 80 psi air and
three (3) feet submergence of the inlet. The air pressure to the pump need only be a
maximum of 10 psi greater than the total developed head of the system for the pump to
automatically operate whenever it fills with fluid. When the pump is empty, the air from
the pump shall be exhausted through the exhaust air hose, allowing fluid to enter the
pump When the pump is full, compressed air is to be fed into the pump through the
compressed air supply hose to push the collected fluid out of the pump. This cycle shall
continue automatically.
Standard materials of construction shall be stainless steel, brass, Delrin, nylon, Viton,
Teflon and FRP,

Short AP-4 Top Loading Specifications Page 2 of 3
Pump Air Valve Description
1. The pump valve design shall need only two hoses - air input and air exhaust.
2. The pump shall be able to function with inlet air pressures ranging from 5 to 150
psi.
3. There shall be two pump air valves - one for air inlet and one for air
exhaust. These valves shall be of a poppet design with the poppet
design with the poppets moving vertically.
4. The poppets for the pump air valves shall be stainless steel,
5. The pump poppet valves shall be mounted on a lever assembly to
facilitate a mechanical advantage for the poppet valves to actuate
reliably. A float shall activate the lever assembly and thus shift the
poppet valves.
6. Compressor lubrication oil and water shall pass from the compressed air supply
hose thorough the air valves easily. The air valves shall be able to pass 90 weight
oil at 70° F at a rate of at least 8 ounces per minute using 80 psi air pressure.
7. The pump air valve shall use air only when discharging fluid from the
pump. The air valve assembly shall not need a bleeding air supply to facilitate
operations.
8. The air valve shall be able to allow the fluid being pumped to rise up through the
valve when the compressed air source is removed from the pump. The pump
shall thus be able to sit submerged and dormant for at least two (2)
days and to start up readily and continue to function when compressed air is
again applied to the pump.
Pump Internals
1. The fluid discharge pipe of the pump shall be stainless steel.
2. The fluid discharge pipe of the pump shall serve as the tension member between
the top and bottom of the pump.
3. The spring shall be a stainless steel alloy.
4. The pump shall supply a volume of at least 0.25 gallons per cycle at zero
discharge head and 30 psi air supply.

•
Short AP-4 Top Loading Specifications Page 3 of 3
Pump Fluid Valves
1. The inlet of the pump shall be 40 inches or less above the bottom of the pump.
2. The inlet and outlet check valve shall be located above the pump body for easy
access.
3. The inlet and outlet check valves shall be Located in one fitting located on the fluid
discharge pipe, for easy access and servicing.
4. The inlet check valve shall be a free-floating, self-cleaning ball check valve.
5. The outlet check valve shall be a free-floating, self-cleaning ball check valve.
Flow Rate
The pump shall be able to remove at least 2,0 gpm with an 80 psi air supply, the inlet
submerged 3 feet and pumping against a 15 psi head.
Without any head, the pump shall be able to pump 3.0 gallons per minute rrrith 80 psi air
pressure and the inlet submerged of 3 feet.
Compressed Air Filter/Regulator
The air filter shall filter the air to 5 microns and be able to remove some oil and water
from the compressed air. It shall have an automatic float drain. The regulator shall be
able to regulate the compressed air from 0 to 250 psi. The air filter shall have metal
bowls and both the air filter and regulator shall be able to withstand 250 psi air pressure.
Hoses
All hoses supplied with the system shall be of industrial grade. The hoses shall equal or
surpass GOODYEAR INSTAGRIP I hose quality. All hoses shall be color coded and
equipped with non -interchangeable brass quick connect fittings.

AP SHORT TOP LOADING AUTO PUMP
TOTAL FLUIDS REMOVAL SYSTEM
AIR FILTER/REGULATOR
FLUID INTAKE
AIR EXHAUST
AIR SUPPLY
FLUID DISCHARGE
• 4' WELL OR LARGER
HYDROCARBON
. WATER
CLEAN ENVIRONMENT ENGINEERS, INC.
EQUIPMENT FOR FUEL SPILL REMEDIATION
AND GROUNDWATER CLEAN-UP
1673 ECU STREET, 3:71TE LCc2
Ei€R'TV1lLE.. CA 446C43
405) 4-424Q ttlQq> 31-1i6 1 tX t4Q b 634-414
TOTAL FLUIDS REMIVAL
SYSTEM