NC0031038_WASTELOAD ALLOCATION_19920921

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit:
NC0031038
q;
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Correspondence
Speculative Limits
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
Document Date:
September 21, 1992
This document im Printed on reixea paper - ipgaora any
ooatant on the reveW04B Bide

DIVISION OF ENVIRONMENTAL MANAGEMENT
September 21, 1992
MEMORANDUM
TO: Jule Shanklin
FROM: Susan A Wilson
THROUGH: Carla Sanderson C
SUBJECT: Colonial Pipeline
NC0031038
Technical Support agrees with Colonail Pipeline's request that the acute toxicity test be
conducted as a 24 hour Fathead Minnow test, as specified in Part III, Section D of the text
of the pemut.
Technical Support concurs with Colonial Pipeline's comments with regard to Part III
Section E of the draft permit. Testing for lead should only be required when lead
abatement wash waters are discharged. BTEX and MTBE monitoring may be eliminated as
a monitoring requirement from lead abatement wash water only. Also, MTBE and lead
monitoring may be eliminated as a monitoring requirement from hydrostatic tank test water
discharge, if this tank water is restricted to kerosenes and/or fuel oils only, as specified in
Colonial Pipeline's comments on the"draft permit.
cc: Allen Hardy, MRO

SENT BY:COLONIAL PIPELINE
i 9- 2-92 12:59 i
ENGINEERING DEPT.4 819 733 9919;4 1
PRox:
TO:
COLONIAL PEPELINE COMIPAW
943 East Paces Perry load
Atlanta, Georgia 30326.1123
1yGnMEMO t,pAp.TNW PAX 0404.04L-2464
Pass= TRANBMTAL
Q
Regular Telephone Number
Equipment Telephone Number
DATE: _ a - 2-9 7
Time Received
Number of Pages (Including Cover)
SPECIAL INSTRUCTIONS:

SENT 5MOLONIAL PIPELINE ; 9— 2-82 ; 12158 7, ENGINEERING DEPT.4
919 733 8818iti 2
V.A. YAMOROUaH
dnr.Yorinpinoo�l�g
Colonial Pipeline Company
993URGENS PLAYA OAS 1AV IACH FURY ROAD ATLANTA. GA, 300741123 44 2614QD
September 2, 1992
Mr. Jewel Shanklin
State of North Carolina Environmental Management Commission
P,O. Box 29535
Raleigh, NC 27626
Re: Public Notice of NPDES Permit Renewal Application
NPDES Permit Number NCO03ID39
Charlotte Delivery Facility
Mecklenburg County
Dear Mr. Shanklin:
T.W. CEAVINO
fAV1fl n(nM1V1 MRnV&
Attached is a copy of the letter with comments pertaining to Colonial's NPDES draft permit which you
have not been able to locate in your Mos. This letter was both faxed and sent federal express to you on
July 31, 1992. As we discussed, please send a copy of the permit tome at the address on the letterhead
as well as to Charlotte Delivery Facility.
If you have any questions, you may contact me at the address on the letterhead or at 4041941-2399.
kit
attachments
cc: T. W. Cervino
R. F. Calupca
M. Boyd
J. D. Quakenbuah
�SiinpmeQly�
4_ O` Vawwr
Kelly L. Turner
Associate Engineer
MAILINO AO0ER11, I.O. 601 '1113 ATbWTA. DA. ]0]2601l1

SENT BY:COLONIAL PIPELINE i 8- 2-92 13100 ENGINEERING DEPT.y, 919 733 8819;# 3
i
Colonial Pipeline Company
VA. YARBOROUGH
Oir60 d1_Erplbb r4
RIRURGINS I{A2A #a RAIT IAQ6 Mly ROAD ATIANTA; GA 5032&1126 14061 261.1470
July 31, 1992
T.W. CERVINO
zMW"W A4i Mbr1/pbr
Mr. Jewel Shanklin
State of North Carolina Environmental Management Commission
812 North Saliebury'Street . .
Raleigh, NC 27604
Res Public Notice of NPDES Permit Renewal Application
NPDES Permit Number KC0031038
Charlotte Delivery Facility
Mecklenburg County
Dear Mr. Shanklint
In response to the public notice of intent to issue a State NPDES.
Permit renewal for Colonial Pipeline Companyra Charlotte Delivery
Facility, Colonial requests several modifications to the draft
permit.
As discussed in our conversation on July 300 the draft permit does
not contain a section titled 0011 Terminal and Petroleum
Transportation Related Facility" which should' address special
consideration for influent quality changes, equipment malfunction,
or other circumstances which may result in effluent concentrations
exceeding permit limitations despite appropriate care and
maintenance measures, taken by the permittee. Also, Colonial 2 Z
requests a clause stating that the permittee may declare a
percentage of the samples taken by it during a calendar year to be
non -representative as is stated in the current NPDES ,Permit for
Charlotte Delivery Facility and in other NPDES permits for Colonial
facilities in North Carolina. This section should also clarify
when the daily maximum is deemed to have been exceeded.
In A ffluent Limitations And MnitOrina NAAe
am d achargge from outfall 001 of the draft permit, Acutp46 N
Toxin ty monitoring i9 required specifying a Daphnid 48 hour test.'°
but in the referenced $art IX1 Section D. Acute Toxieity o•K.
Monitoring, a- Fathead Minnow 24 hour static test is specifled.,---�
Colonial requests that a Fathead Minnow 24 hour test be performed
as in part D instead of a Daphnid 48 hour test.
MAAUNG ADDRIRN I.O. 102 16I61 AMNIA, OA. 303264666

SENT BY:COLONIAL PIPELINE
9- 2-92 13:01 ENOINEERINO DEPT.-4 919 733 9919i8 4
^. �d49niaA Vlve31ne COM'72M7
Mr. Jewel ghanklin
July 31, 1992'
Page 2
In part T Section A Part ITT Section E, Colonial is required to
test for organic parameters and lead during the first five
discharge events and annually thereafter. Colonial requests that
organics testing be limited to benzene, ethylbenzene, toluene, oK-
xylens, and methyl tort -butyl ether (MTBE).. Testing for Lead
should only be required when bead abatement wash waters are
discharged since it is no longer a significant component Of
gasolines. Colonial further requests that BTEX and MTBR testing
for lead abatement wash waters and that ME
testing for
hydrostatic test water discharges from fuel oil and kerosene tanks
be deleted) Lead should be the only contaminant of concern with oje
the lead abatement wash waters and MTBE is not a component of
kerosenes or fuel oils.
If you have any questions, you may contact as at the address on the
bottom of the letterhead or at 404/841-2399.
Sincerely,__
44 �V99awl
Kelly L. Turner
Associate Engineer
klt
cc: T. W. cervino
R. F. Calupoa
J.I. Boyd
J. D. Quakenbush

l�-ll0 i�piflu�.t.T t�Fo PtTS�Ck4'ti�
NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO031038
PERMITTEE NAME: Colonial Pipeline Company
FACILITY NAME: Charlotte Delivery Facility
Facility Status: Existing
Permit Status: Renewal
Major
Pipe No.: 001
Minor _q
Design Capacity: (0.0045) MGD --
Domestic (% of Flow):
Industrial (% of Flow): 100 %
Comments:
Stormwater through of water separator PLOTTED
STREAM INDEX: 11-120-5
RECEIVING STREAM: an unnamed tributary to Gum Branch
Class: C
Sub -Basin: 03-08-34
Reference USGS Quad: F15SW, Mtn.Isl. Lake (please attach)
County: Mecklenburg
Regional Office: Mooresville Regional Office
Previous Exp. Date: 3/31/92 Treatment Plant Class:
Classification changes within three miles:
> 3 mi.
Requested by:,
Prepared by:
Reviewed by:
Modeler
Date Rec.
#
Drainage Area (mil ) ,-- o .1 Avg. Streamflow (cfs):
7Q10 (cfs) 0 -Winter 7Q10 (cfs) 0 30Q2 (cfs)
Toxicity Limits: IWC % Acu /Chronic
Instream Monitoring: EPISOD t C
Parameters
Upstream Location
Downstream Location
Recort MWd d limits Monthly Averaa . Daily Max-_• MM_FZZ Wp EL
Flow (MGD):
Oil &Grease m
Turbidity QM): K1215. s
TSS (mg/l): .
Benzene (}tg4): monitor
Toluene (µg4): monitor
Ethylbenzene (µga): monitor
Xylene (µg/1): monitor
Lead (�Lg/l): monitor
Methyl-tert-butyl ether (MTBE) (µg/l): monitor
SPECIAL INSTRUCHONS OR CONDITIONS
++
instantaneous
6-9
2/mon
45
2Anon
mon
*s
**
**
**
**
—7 5eE VuAz ucvc 1`
++ Permit must contain flow monitoring requirement such that all volumes of wastewater leaving
the facility are monitored. If continuous monitoring is not feasible, then discharger shall record the
approximate times that discharge began and ended, along with instantaneous flow at the time of
effluent samping. Monitoring for all toxicants should be performed during the first five discrete
discharge events (annually thereafter) after the effective date of the NPDES permit. Monitoring
should occur at the same time that the whole -effluent toxicidy sample is collected during the
discharge event (samples should be collected within 24 hours of the beginning of the event).
*The turbidity in the receiving stream will not exceed 50 NTU. (9r7Q10 = 00, 50 NNT'U applies as
an effluent limit.)
** BTEX parameters should be monitored using an EPA approved method to a detection level of
at least 1 ppb. Organic parameters and lead should be monitored during the first five events and
annually thereafter in correspondence with toxicity testing. Clause should be placed in the permit
to allow for additional limits on these or other toxicants should the whole effluent toxicity test
indicate toxic effects.
BTEX, and MTBE must be monitored after discharge of hydrostatic test water (tank or pipeline)
and lead abatement wash H2O.
NOTE: Clause should be placed in permit stating that lead abatement wash H2O may only be
discharged if tests of the wash H2O show lead levels less than or equal to 25 µg/l.

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION
Colonial Pipeline Co.
NCO031038
Industrial - 100%
Existing
Renewal
UT Gum Branch
C
030834
Mecklenburg
J. Shankhn
11/18/91
F15SW
Request # 6601
k
n
r
is
r>= -ni
cl
Stream Characteristic:
USGS # est.
}
Date:
Drainage Area (mi2): <0.1
c�
Summer 7Q10 (cfs): 0.0
co
T.t
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC M:
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Large bulk storage facility. Recommend new stormwater discharge SOP from petroleum storage
facilities [ref. 3/15/92 memo to Regional WQ Supervisors].
Per Colonial Pipeline's addendum to permit application (11/13/91), they also discharge wash H2O
from lead paint removals, tank hydrotest water, and pipeline hydrotest water. Colonial performs
in-house tests on these waters before discharging.
The discharge goes into an oil/H20 separator and to a "detention pond". The MRO is in the
process of requiring Colonial to eliminate this as a treatment scenario because Colonial has only
dammed up the existing tributary and not really created a "detention pond" for treatment.
Special Schedule Requirements and additional comments from Reviewers:
Recommended by:
ate:
Reviewed by
Instream Assessment: l� Date:0 a
Regional Supervisor:Date: Q
6
Permits & Engineering: /! Date: /
RETURN TO TECHNICAL SERVICES BY:
APR 3 © 1992

2
TOXICS
Type of Toxicity Test:
Existing Limit:
Recommended Test:
Acute Epsiodic 24 hr Fathead Minnow
Monitoring Schedule:
First five events, then annually
Existing Limits
Mon. v Daily Max
pH (SU):
6-9
Oil & Grease (mg/1):
30 60
Recommended Limits
Monthly Average Dail_
Mon. Frea. WQLEL
Flow (MGD):
++
instantaneous
pH (SU):
6-9
2/mon
Oil & Grease (mg/1):
45
2/mon
Turbidity (NTU):
*
2/mon
TSS (mg/1):
45
2/mon
Benzene (µg/1):
monitor
**
Toluene (µg/l):
monitor
**
Ethylbenzene (ggft
monitor
Xylene (µg/l):
monitor
**
Lead (µg/l):
monitor
**
Methyl-tert-butyl ether (MTBE) (µg/l): monitor
**
SPECIAL INSTRUCTIONS OR CONDITIONS
++ Permit must contain flow monitoring requirement such that all volumes of wastewater leaving
the facility are monitored. If continuous monitoring is not feasible, then discharger shall record the
approximate times that discharge began and ended, along with instantaneous flow at the time of
effluent samping. Monitoring for all toxicants should be performed during the first five discrete
discharge events (annually thereafter) after the effective date of the NPDES permit. Monitoring
should occur at the same time that the whole -effluent toxicitiy sample is collected during the
discharge event (samples should be collected within 24 hours of the beginning of the event).
-�heve�o�e.
*The turbidity in the receiving stream will not exceed 50 NTU. (1r7Q10 = 0,k50 NTU applies as
an effluent limit.)
** BTEX parameters should be monitored using an EPA approved method to a detection level of
at least 1 ppb. Organic parameters and lead should be monitored during the first five events and
annually thereafter in correspondence with toxicity testing. Clause should be placed in the permit
to allow for additional limits on these or other toxicants should the whole effluent toxicity test
indicate toxic effects.
BTEX, and MTBE must be monitored after discharge of hydrostatic test water (tank or pipeline)
and lead abatement wash H2O.
NOTE: Clause should be placed in permit stating that lead abatement wash H2O may only be
discharged if tests of the wash H2O show lead levels less than or equal to 25 µg/l.

Limits Changes Due To: Parameter(s) Affected
New regulations/standards/procedures TSS, O&G,pH,flow
New facility information BTEX, Lead
The following parameter(s) are water quality limited:
For some parameters, the available load capacity of the immediate receiving water will be
consumed. This may affect future water quality based effluent limitations for additional
dischargers within this portion of the watershed.
0
_X_ No parameters are water quality limited, but this discharge may affect future allocations.
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Miscellaneous information pertinent to the renewal or new permit for this discharge. Include
relationship to the Basinwide Management Plan.
WASTELOAD SENT TO EPA? (Major) _N_ (Y or N)
(If yes, then attach schematic toxics spreadsheet, copy of model, or if not modeled, then old
assumptions that were made, and description of how wasteload fits into basinwide plan.)
Additional Information attached? _N_ (Y or N) If yes, explain with attachments.
11/13/91 Colonial Pipeline letter is attached.

Facility Name "miAt. R PEuge Co. Permit # NC003 10 ,6 Pipe #
ACUTE TOXICITY MONITORING (EPISODIC)
The permittee shall conduct FIVE acute toxicity tests using protocols defined as definitive in
E.P.A. Document 600/4-85/013 entitled '"The Acute Toxicity of Effluents to Freshwater and
Marine Organisms." The monitoring shall be performed as a Fathead Minnow (Pimephales
promelas) 24 hour static test, using effluent collected as a single grab sample. Effluent samples
for self -monitoring purposes must be obtained below all waste treatment. Sampling and
subsequent testing will occur during the first five discrete discharge events after the effective date
of this permit. After monitoring of the fast five toxicity tests, the permittee will conduct one test
annually, with the annual period beginning in January of the next calendar year. The annual test
requirement must be performed and reported by June 30. If no discharge occurs by June 30,
notification will be made to the Division by this date. Toxicity testing will be performed on the
next discharge event for the annual test requirement.
The parameter code for this test is TAE6C. All toxicity testing results required as part of this
permit condition will be entered on the Effluent Discharge Form (MR-1) for the month in which it
was performed, using the appropriate parameter code. Additionally, DEM Form AT-1 (original) is
to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Rd.
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measuremen
performed in association with the toxicity tests, as well as all dose,(response data. Total residual
chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should any test data from either these monitoring requirements or tests performed by the North
Carolina Division of Environmental Management indicate potential impacts to the receiving stream,
this permit may be re -opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival and appropriate environmental controls, shall constitute an invalid test.
Failure to submit suitable test results will constitute noncompliance with monitoring requirements.
7Q10 0 cfs
Permitted Flow N/R MGD
IWC 100.0 %
Basin & Sub -basin 03og!%
Receiving Stream lxr Bunn Ea.
County taAF.cmQ4Ba2y
EAM Fathead 24 Version 10191
Recommended by:, n
Date 3 1 4L

Colonial Pipeline Company
9I Fri! (r F.�• ��.
V.F. 'iARoOPO'JCz:I
L revar.Engareerng
November 13, 1991
VIA FEDERAL EXPRESS
NC Department of Environment, Health, and Natural Resources
Permits and Engineering Unit
Division of Environmental Management
512 North Salisbury Street
Raleigh, NC 27604
Re: NPDES Permit Renewal Application Addendum
NPDES Permit Number NCO031038
Charlotte Delivery Facility
Mecklenburg County
Dear Sir or Madam:
As an addendum to the 9/30/91 NPDES permit renewal application for the above mentioned facility,
Colonial requests that the renewed permit include the following discharges:
"Manifold yard stormwater" is collected by the underground drainage system and is routed to the
facility oil/water separator for treatment prior to its release to the facility retention pond.
2. "Washdown slab water" is an intermittent discharge that is generated when internal cleaning or
inspection equipment is removed from the facility scraper traps and when equipment is cleaned
with water to remove any refined petroleum products. The washdown slab effluent is piped to
the facility oil/water separator for treatment prior to its release to the facility retention pond.
"Prover loop calibration water" is an intermittent discharge that is generated during the
calibration of the facility prover loops which are used to confirm meter accuracy. The calibration
water is routed to the oil/water separator for treatment prior to its release to the facility retention
pond.
4. "Wash water from the lead abatement decontamination trailer" is generated during lead paint
removal operations at the facility. These operations are part of Colonial's lead abatement
program. The wastewater from showers and washing machines in the decontamination trailer
contains low concentrations of lead (well below hazardous waste levels). Colonial will route this
water to the facility oil/water separator prior to its release to the retention pond.

COLONIAL PIPELINE COMPANY
NC Department of Environment, Health, and Natural Resources
November 13, 1991
Page 2
5. "Tank hydrotest water" is generated periodically when it is necessary to confirm the integrity of
one or more of the facility's storage tanks. Colonial typically uses city water or water from its
facility retention pond as the source of its hydrotest water. After a laboratory analysis of the tank
hydrotest water has shown that treatment is not necessary, Colonial will release the tank hydrotest
water into the diked area surrounding the tank where it will eventually flow to the retention pond
via the tank dike drain(s).
6. "Pipeline hydrotest water" may be generated periodically during hydrotests of the facility piping
and/or pipelines that enter and exit the facility. Although Colonial has previously treated its
pipeline hydrotest water with a mobile activated carbon treatment unit, necessary treatment of
pipeline hydrotest water is determined on a case by case basis. Colonial requests that a clause be
included in the renewed permit that grants conditional approval of the discharge of pipeline
hydrotest water. Approval will be contingent on NC DEHNR's acceptance of Colonial's
proposed treatment system. Colonial makes this request in order to avoid the sometimes lengthy
permit modification process.
If you have any questions or need any additional information, I can be reached at 404/841-2491 or at the
mailing address on the letterhead.
Sincerely,
Perry`D. Sisk
PDS/pds
cc: T. W. Cervino
R. F. Calupca
D. C. Baughn
J. D. Quakenbush

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V
SOC PRIORITY PROJECT:
RECEIVED
APR 12 1996
FACILITIES ASSESSMENT UNIT
Yes_ No X
To: Permits and Engineering Unit
Water Quali 6ctlan-
Attention: Mary L_Cab�
Date: April 4, 1996
NPDES STAFF REPORT AND RECOMMENDATION
County: Mecklenburg
MRO No.: 96-77
Permit No. NC0031038
PART I - GENERAL INFORMATION
1. Facility and Address: Colonial Pipeline Company
Post Office Box 87
Paw Creek, North Carolina 28130
2. Date of Investigation: 04-03-96
3. Report Prepared By: Samar Bou-Ghazale, Env. Engineer I
4. Persons Contacted and Telephone Number: Mr. Dan Miller,
District Environmental Engineer; (70.4) 399-8266
5. Directions to Site: From the junction of Highway I-85 and
Highway 27 in Charlotte, travel west on Highway 27 (Freedom
Drive) approximately three (3) miles to Old Mt. Holly Road.
Turn right onto Old Mt. Holly Road and travel approximately
0.2 mile to intersection with Kenstead Circle. Proceed on
Kenstead Circle approximately 200 feet. The entrance to
Colonial Pipeline Company is located on the left side of the
road.
6. Discharge Point(s). List for all discharge points:
Latitude: 350 17' 17" Longitude: 80" 56' 08"
Attach a U.S.G.S. map extract and indicate treatment facility
l site and discharge point on map.

USGS Quad No.: F 15 SW USGS Quad Name: Mountain Island Lake
7. Site size and expansion are consistent with application?
Yes X No_ If No, explain:
8. Topography (relationship to flood plain included): Moderately
hilly, with slopes of 3 to 7%. The site is not located in a
flood plain.
9. Location of nearest dwelling: None within 500 feet of the
discharge point.
10. Receiving stream or affected surface waters: Unnamed
tributary to Gum Branch.
a. Classification: WS-IV
b. River Basin and Subbasin No.: Catawba River Basin;
030834
C. Describe receiving stream features and pertinent
downstream uses: Discharge will take place into an
unnamed tributary to Gum Branch. General C classification
uses downstream. One water supply intake is located on
Lake Wylie.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Type of wastewater to be permitted:
0% Domestic
100% Industrial
a. Volume of Wastewater: * MGD (Design Capacity)
b. What is the current permitted capacity of the wastewater
treatment facility? * The wastewater is generated from
storm water that falls into the manifold area and is
collected in a french drainage system. Petroleum
constituents are introduced into the storm water from any
free phase petroleum that enters the underground drainage
NPDES Permit Staff Report
Version 10/92
Page 2

system as the result of a spill or from wash down slab
water.
C. Actual treatment capacity of the current facility
(current design capacity)? N/A.
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years: An Authorization to construct for the groundwater
remediation system was issued under Permit No. NCG510207
on July 29, 1994 and was amended on December 1, 1995..
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: The existing
treatment consists of an oil water separator followed by
a pond which is fed by several tributaries. The pond is
also being used as an emergency oil water separator.
f. Please provide a description of proposed wastewater
treatment facilities: N/A
g. Possible toxic impacts to surface waters.: Due to nature
of the wastewater there could be some toxicity concern.
h. Pretreatment Program (POTWs only): N/A.
2. Residuals handling and utilization/disposal scheme: Sludge
accumulates in the oil/water separator at a rate such that
cleaning only needs to be done every five to ten years. When
cleaning is done the company contracts a licensed waste
disposal facility for removal and disposal.
3. Treatment plant classification (attach completed rating
sheet): Proposed, no rating given.
4. SIC Code(s): 5171
Primary: 39
Main Treatment Unit Code:' 53000
NPDES Permit Staff Report
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PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved (municipals only)?
N/A.
2. Special monitoring or limitations (including toxicity)
requests: Toxicity may need to be limited/monitored due to the
suspected toxic nature of such discharges.
3. Important SOC, JOC or Compliance Schedule dates: (please
indicate) N/A.
4. Alternative Analysis Evaluation: Has the,facility evaluated
all of the non -discharge options available. Please provide
regional perspective for each option evaluated.
Spray irrigation: N/A
Connection to regional Sewer System: N/A
Discharge to an infiltration gallery:N/A
5. Air Quality and/or Groundwater concerns or hazardous material
utilized at this facility that may impact water quality, air
quality or groundwater? Contaminated groundwater already
exists at the site. •Hazardous material stored at the site may
pose a threat to groundwater. Air Quality Permit for this
facility may be required by Mecklenburg County.
PART IV - EVALUATION AND RECOMMENDATIONS
Colonial Pipeline Company is requesting an NPDES Permit
renewal for the discharge of treated wastewater. The-was.tewater-a
outfall-- 0.01._is_generated--from--storm-_water_thatTf-a11s_in—the
manifold,area,-from-wash-down-slab .water-,.-or---fr-omf-spfiTY_ .=-Theme
hydrotest=water---is-- dischar-ged�at=outfa dl_ -Q 2DBoth
discharges eventually enter the pond. The tank bottom water is
treated on site as approved by Permit No. WQ0004751.
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0
It is recommended that the NPDES Permit be renewed once the
above mentioned concern regarding toxicity has been addressed and
comments from the GW Section have been received.
Signature ojrRep�rt Preparer
Water Quality FWgional Supervisor
NPDES Permit Staff Report
Version 10/92
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Date
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Date