NCG510479_Regional Office Historical File Pre 2018

State of North Carolina NC DEP VIo
AND NATuRAL FtEgOuRCE8
Department of EnvironmepboREsv, '4161_oFFlCE
167117061,
and Natural Resources F
Division of Water Quality
MAY 3 0 2003 CD E
Michael F. Easley, Governor
William G. Ross Jr., Secretary
NORTH CAROLINA DEPARTMENT OF
Alan Klimek, P.E., Director , g,�q ENVIRONMENT AND NATURAL RESOURCES
Ms. Debbie Sailors
INATrr ° ' ' 'r�t►I of o3
Petroleum World, Inc.
681 NC Highway 120
Mooresboro, NC 28114
Subject: NPDES General Permit COC NCG510479
Triangle Texaco
ADDITIONAL INFO REQUEST
Gaston County
Dear Ms. Sailors:
Before I can issue the above mentioned permit I need the following additional information.
Additional Information Required;
• The air provided for the air stripper in the application was given at 140 cfm, however the air
provided for the air stripper calculations was given as 300 cfm. If the system is truly to be operated at
300 cfm I will need a letter that has been signed and sealed by a professional engineer stating that this
is the case.
• The piping and instrument diagram provided does not show any oil product storage tank for the oil
skimmed off in the oil/water separator. I will need new plans that include a product storage tank that
have been signed and sealed by a professional engineer.
Please get the above-mentioned information to my attention by June 30, 2003. If I have not received the
required information by that time the package will be returned.
If you have any questions, please contact me at [phone], extension 578.
Sincerely,
Aisha H. Lau
Environmental Engineer
cc: Mooresville Regional Office
Stormwater and General Permits file
Mr. Keith Anthony, Shield Engineering, Inc., 4301 Taggart Creek Road, Charlotte, NC 28208
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/10%post-consumer paper

SOC PRIORITY PROJECT: NO
To: Permits and Engineering Unit
Water Quality Section
Attention: Delonda Alexander
Date: September 23, 2002
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Gaston County
NPDES Permit No.: NCG510478
MRO No.: 02-13
PART I - GENERAL INFORMATION
1. Facility and Address: Triangle Texaco
201 N. Main Street
Mount Holly, NC 28120
2. Date of Investigation: June 21, 2002
3. Report Prepared By: B. Dee Browder, Environ. Engr. I
4. Person Contacted and Telephone Number: Keith Anthony, [phone]
5. Directions to Site: Travel south on I-77 to exit 18. Turn right onto Reames Road. Turn
left onto Mt. Holly Huntersville Road. Travel approximately 10.0 miles. Turn right onto
Main Street. Facility is located at the intersection of Main Street and Woodlawn Road.
6. Discharge Point(s), List for all discharge Points: -
Latitude: 35° 18' 00"
Longitude: 81° 01' 30"
Attach a USGS Map Extract and indicate treatment plant site and discharge point on map.
USGS Quad No.: Mount Holly,NC
7. Site size and expansion area consistent with application: Yes.
8. Topography (relationship to flood plain included): Site has minimal slope and is not
located in a flood plain.
9. Location of Nearest Dwelling: Approx.100 feet from the WWTP site.

Page Two
10. Receiving Stream or Affected Surface Waters: Dutchmans Creek
a. Classification: WS IV CA
b. River Basin and Subbasin No.: Catawba 03-08-36
c. Describe receiving stream features and pertinent downstream uses: Belmont
water supply intake approximately 3 miles downstream.
PART H-DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater: 0.0216 MGD (Design Capacity)
b. What is the current permitted capacity: N/A MGD
c. Actual treatment capacity of current facility (current design capacity): 0.0216
MGD
d. Date(s)and construction activities allowed by previous ATCs issued in the
previous two years: N/A
e. Description of existing or substantially constructed WWT facilities: N/A
f. Description of proposed WWT facilities: The method of treatment is a
groundwater pump and treat system with soil vapor extraction for contaminant
removal. A soil vapor extraction system consisting of 5 recovery wells located
throughout the contamination plume delivers the groundwater to an oil/water
separator followed by a storage tank. Contaminated groundwater will then be
pumped to a stacked tray aerator followed by carbon canisters for finishing. The
treated water is then discharged into Dutchmans Creek.
g. Possible toxic impacts to surface waters: There are no toxic impacts expected.
h. Pretreatment Program(POTWs only): Not Needed.
2. Residual handling and utilization/disposal scheme:
a. If residuals are being land applied specify DEM Permit No. N/A.
Residuals Contractor: N/A
Telephone No. ( )N/A
b. Residuals stabilization: PSRP PFRP
c. Landfill: N/A
3. Treatment Plant Classification: Class
4. SIC Code(s):5541 Wastewater Code(s): 53210
5. MTU Code(s): 37

Page Three
PART III- OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds or are any public monies
involved (municipals only)? No
2. Special monitoring or limitations (including toxicity) requests: None at this time.
3. Important SOC/JOC or Compliance Schedule dates: N/A
Submission of plans and specifications
Begin Construction
Complete construction
4. Alternative Analysis Evaluation
a. Spray Irrigation: No land available.
b. Connect to regional sewer system: Mount Holly does not accept groundwater
discharges.
c. Subsurface: Insufficient land available.
d. Other disposal options:
PART IV-EVALUATION AND RECOMMENDATIONS
The Mooresville Regional Office recommends issuance of a NPDES Permit for Triangle Texaco
in Mount Holly,NC for the treatment and discharge of petroleum contaminated wastes.
/),-; c;—
Signature of Report Preparer I Dat
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Water Quail egional Supervisor Date •
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,4 i.• k'i,e (A€6
`NA7F
�O Rp Governor
G \ t William G.Ross Jr.,Secretary
/ North Carolina Department of Environment and Natural Resources
.i �r�V Gregory J.Thorpe, Ph.D.,Acting Director
N- �I Division of Water Quality
otki
April 23, 200
Ms. Debbie Sailors v rL
Petroleum World, Inc.
681 NC Hwy 120
Mooresboro, North Carolina 28114
Subject: Application No. NCG510478
Triangle Texaco
201 N. Main St.
Mount Holly (Gaston County)
Dear Ms. Sailors:
This is to acknowledge receipt of the following documents on April 12, 2002:
X Completed Notice of Intent(Application form),
Engineering Proposal(for proposed control facilities),
X Request for certificate of coverage
X Application processing fee of $80.00.
X Engineering Economics Alternatives Analysis,
X Engineering Plans and Specifications
X Local Government Signoff,
Source Reduction and Recycling,
—
Interbasin Transfer,
Other:
The items checked below are needed before review can begin:
Completed Notice of Intent(Application Form),
Engineering proposal (see attachment),
Application Processing Fee of$00.00,
Delegation of Authority (see attached),
Biocide Sheet(see attached),
Engineering Economics Alternatives Analysis,
Engineering Plans and Specifications
Local Government Signoff,
Source Reduction and Recycling,
Interbasin Transfer,
X Other: Air stripper removal efficiencies(expressed as percent removal) for all
contaminants of concern listed on Page 2 of the submitted application must be
submitted. Please note that the submitted Notice of Intent(NOI)form was an old
version no longer in use. A new NOI Form was implemented on October 1,2001,
which requests these removal efficiencies in number 8(b). The new version may
be downloaded from our web site at:
http://h2o.enr.state.nc.us✓su/Forms_Documents.htm
©iA
NCDENR
Customer Service Division of Water Quality 1617 Mail Service Center Raleigh,NC 27699-1617 [phone]
ann a•Y1-77AS2

i M
NCG510478
Ms. Sailors
April 23,2002
Page 2
I am, by copy of this letter, requesting that our Regional Office Supervisor prepare a staff report and
recommendations regarding this discharge. If you have any questions regarding this application, please do not
hesitate to contact me at 919/733-5083 ext. 584.
Sincerely,
Delonda Alexander
Permits Engineer
Stormwater and General Permits Unit
cc: Mr. Andrew Davis, Shield Engineering, Inc. (4301 Taggart Creek Rd.,Charlotte,NC 28208)
Permit Application File