NC0005185_Authorization to Construct_19950623

State of North Carolina IT LM
Department of Environment,
Health and Natural Resources «
Division of Environmental Management
James B. Hunt, Jr., Governor dft7
Jonathan B. Howes, Secretary p E H N F-=1
A. Preston Howard, Jr., P.E., Director
June 23, 1995
Mr. J. W. Scrivner
Amoco Oil Company
375 Northridge Road, Suite 350
Atlanta,Georgia 30350-3296
Subject: Permit No. NCO005185
Authorization to Construct
Amoco-Paw Creek
Wastewater Treatment Facility
Mecklenburg County
Dear Mr. Scrivner:
A letter of request for an Authorization to Construct was received on March 8, 1995 by the
Division and final plans and specifications for the subject project have been reviewed and found to be
satisfactory. Authorization is hereby granted for the construction of an addition to the groundwater
treatment system consisting of a transfer tank, transfer pumps, a flow meter, air strippers, and a GAC
filtration system with discharge of treated wastewater into an unnamed tributary to Long Creek.
This Authorization to Construct is issued in accordance with Part III, Paragraph A. of NPDES
Permit No. NCO005185 issued July 5, 1994 and shall be subject to revocation unless the wastewater
treatment facilities are constructed in accordance with the conditions and limitations specified in Permit No.
NC0005185.
In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective action, including those as may be required by this
Division, such as the construction of additional or replacement wastewater treatment or disposal facilities.
The Mooresville Regional Office, telephone number 704/663=1699, shall be notified at least forty-
eight(48) hours in advance of operation of the installed facilities so that an in-place inspection can be
made. Such notification to the regional supervisor shall be made during the normal office hours from 8:00
a.m. until 5:00 p.m. on Monday through Friday, excluding State Holidays.
Upon completion of construction and prior to operation of this permitted facility, a certification
must be received from a professional engineer certifying that the permitted facility has been installed in
accordance with the NPDES Permit,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.
Upon classification of the facility by the Certification Commission, the Permittee shall employ a
certified wastewater treatment plant operator to be in responsible charge (ORC) of the wastewater treatment
facilities. The operator must hold a certificate of the type and grade at least equivalent to or greater than the
classification assigned to the wastewater treatment facilities by the Certification Commission. The
Permittee must also employ a certified back-up operator of the appropriate type and grade to comply with
the conditions of Title 15A, Chapter 8A, .0202. The ORC of the facility must visit each Class I facility at
P.O. Box 29535, Raleigh,North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50%recycled/ 10%post-consumer paper

Permit No. NC0005185 1
Authorization to Construct
Amoco Oil Company :
June 23, 1995
Page 2
least weekly and each Class 11, III, and IV facility at least daily, excluding weekends and holidays, and
must properly manage and document daily operation and maintenance of the facility and must comply with
all other conditions of Title 15A, Chapter 8A, .0202. Once the facility is classified, the Permittee must
submit a letter to the Certification Commission which designates the operator in responsible charge within
thirty days after the wastewater treatment facilities are 50% complete.
A copy of the approved plans and specifications shall be maintained on file by the Permittee for the
life of the facility.
Failure to abide by the requirements contained in this Authorization to Construct may subject the
Permittee to an enforcement action by the Division of Environmental Management in accordance with
North Carolina General Statute 143-215.6A to 143-215.6C.
The issuance of this Authorization to Construct does not preclude the Permittee from complying
with any and all statutes, rules, regulations, or ordinances which may be imposed by other government
agencies (local, state, and federal) which have jurisdiction.
One (1) set of approved plans and specifications is being forwarded to you. If you have any
questions or need additional information, please contact Jay Lucas, P.E., telephone number 919/733-5083
extension 502.
Sincerely,
r�A�resto�idard, Jr., P.E.
cc: Central Files
Mooresville Regional Office,Water Quality
-Permits•and-Engineering
Facilities Assessment Unit
Mecklenburg County Health Department
Operator Training and Certification Unit
Mr. Michael D. Armour, P.G.
Law Engineering, Inc.
2801 Yorkmont Road. Suite 100
Charlotte, North Carolina 28220
f

To: Permits and Engineering Unit
Water Quality Section
ATTN: Susan Wilson
Date: December 14, 1995
AUTHORIZATION TO CONSTRUCT
NPDES PERMIT ,3Y'
REPORT AND RECOMMENDATIONS
County: Mecklenburg
Permit No. ACDO05185 w�
PART I _ GENERAL INFORMATION
1 . Facility and Address : Amoco Oil Company
375 Northridge Rd; Suite 600
Atlanta, Georgia 30350
2 . Date of On-Site Investigation ( if conducted) : N/A
3 . Report Prepared By: Samar Bou-Ghazale, Env. Engineer I
4 . Persons Contacted and Telephone Number: N/A
5 . Verified Discharge Point(s) , List for All Discharge Points :
Latitude: 35016' 56" Longitude: 8005621"
Attach a USGS map extract and indicate treatment facility
site and discharge point on map. Ensure discharge point(s )
corresponds to NPDES . permitted discharge point(s) .
USGS Quad No. : F 15 SW USGS Quad Name: Mountain Island
Lake, N.C.
6 . Size ( land available for expansion and upgrading) : yes
7 . Topography (relationship to flood plain included) : Flat to
moderate slopes; the WWT facilities are not located within
the 100 year flood plain.
8 . Location of Nearest Dwelling: . The nearest house is located
approximately 400 feet west of ,the facility.
' -~ PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1 . Type of Existing Treatment Facility: The existing treatment
facilities consist of an on-site and off-site remediation
system. The on--site treatment facilities consist of seven
recovery pumps, an oil/water separator, a granular activated
carbon (GAC) fluidized bed reactor (biological treatment) , a
multimedia filtration system with a clarifier, a bag filter
( 10 micron) , and six GAC canisters for polishing. The off-

t
site treatment facilities consist of five recovery pumps , an
oil/water separator, a bag filter ( 10 micron) , and four GAC
canisters . Also, the recovered water from the proposed
remediation system ( for the former GNC diesel UST area) will
be routed to the oil/water separator of the off-site system.
2 . Type of Proposed Treatment Facility: The proposed treatment
system will consist of the same components of the existing
treatment facility with the following exception: Law
Engineering is proposing to eliminate the fluidized bed
reactor system- (Figure 1) and route the effluent from the
on-site system oil/water separator and the off-site system
oil/water separator (Figure 2 ) to two separate air stripping
systems (Figure 3) .
3 . Sludge Handling and Disposal Scheme: There will be no
sludge generation after the removal of the fluid bed
reactor.
4 . Treatment Plant Classification (attached completed rating
sheet) : N/A
5 . SIC Code(s) : 5171
Wastewater Code(s) :
Primary: 66 Secondary:
Main Treatment Unit Code: 53000
PART III - EVALUATION AND RECOMMENDATIONS
On behalf of Amoco Corporation, Law Engineering, Inc . (LAW)
is requesting a modification to the Authorization to Construct.
The modification consists of the the elimination of the fluid bed
reactor and the addition of air stripping systems for the
existing groundwater remediation system located at Amoco ' s
Charlotte Terminal .
It is recommended that the authorization to construct be
issued.
Signqture of eport Preparer
Water Quality �gi nal Supervisor
2 S
Date