NC0046531_Wasteload Allocation_19940614

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NPDES WASTE LOAD ALLOCATION
PERMIT Na: NC0046531
PERMITTEE NAME:
FACILITY NAME:
Crown Central Petroleum Corporation
Charlotte Terminal
Facility Status: Existing
Permit Status: Modification
Major Minor
Pipe No.: 001
Design Capacity: 0.0432 MGD
Domestic (% of Flow):
Industrial (% of Flow):
0%
100 %
Comments:
This permit is currently for stormwater from bulk fuel storage.
Currently, outfalls 002 and 003 are not in use. The permittee wants to
add a discharge of treated groundwater at a flow of 0.0432 MGD.
RECEIVING STREAM: an unnamed tributary to Gum Branch
Class: ws - u.
Sub -Basin: 03-08-34
Reference USGS Quad: F 15 SW (please attach)
County: Mecklenburg
Regional Office: Mooresville Regional Office
Previous Exp. Date: 8/31/96 Treatment Plant Class: 0
Classification changes within three miles:
none �yc ()//J/9!
74PP
Requested by:
Prepared by:
Reviewed by:
NDw ^f/P
Ja Lucas
Date: 5/12/94
Date: s 113 9 -/
Date: LO
Modeler
Date Rec.
#
•.7MA./
Sl/ 3/v-
715-L.
Drainage Area (mi2): Average Streamflow (cfs):
s7Q10 (cfs): 0.0 w7Q10 (cfs): 30Q2 (cfs): 0.0
Type of Toxicity Test:
Monitoring Schedule:
Instream Monitoring
Acute / Fathead Minnow 24 hr
Annual
nr
Mon. Ave. Daily Max Frequency
Flow (MGD) 0.0432 variable
Oil and Grease (mg/1): 45 2/month
pH (SU): 6-9 2/month
Settleable Solids (m1/1): nr nr
TSS (mg/I): 45 2/month
Tubidity' (NTU) 50 2/month
Benzene (µg/I): 1.19 2/month
Toluene (µg/l): 11 2/month
Phenols (µg/1: 1.0 2/month
Xylene (µg/I): monitor on same schedule
MTBE (µg/I): monitor on same schedule
Ethylbenzene (µg/I): monitor on same schedule
+Flourene (41): monitor
+Naphthalene (4/1): monitor
+Phenanthrene (µg/I): monitor
+Pyrene (µg/I): monitor
Lead " WA):
+ Four major constituents to monitor for GW Remediations which have either diesel,
keosine, or jet fuel.
* The discharge shall cause the turbidity of the receiving water to exceed 50 NTU. If the
turbididty exceeds these levels due to natural background conditions, the
discharge level cannot cause any increase in the turbidity of the receiving water.
" If leaded fuels are present
All volumes of wastewater leaving the facility must be monitored. If continuous monitoring
is not feasible, then the discharger shall record the approximate times that discharge
began and ended, along with the instantaneous flow at the time of effluent sampling.
Analysis for Benzene, Toluene, and Xylene should be accomplished using an EPA
approved method to a detection level of at least 1 ppb. Also recommend monitori► , r
methyl tert-butyl ether (MTBE), Ethyl benzene, Fluorene, Naphthalene, Pheneathrene,
and Pyrene should be accomplished using an EPA approved method. Monitoring ip;
methyl tert-butyl ether (MTBE) and Ethyl benzene should be performed at the samo.1) po
that the whole effluent toxicity test sample is taken annually. Monitoring for Fluprone,
Naphthalene, Pheneathrene, and Pyrene should be performed quarterly. A reopener
clause should be placed in the permit to allow limits to be placed on toxicants should the
facility fail its whole effluent toxicity test.
WS dassifiaction
WS classifiaction
WS dassifiac ion
as whole effluent toxicity test
as whole effluent toxicity test
as whole effluent toxicity test
Qrtly GW Remediation
Qrtly GW Remediation
Qrtly GW Remediation
Qrtly GW Remediation
25.0 2 / month GW Remediation

CORRECTIVE ACTION PLAN
CROWN CENTRAL PETROLEUM
CHARLOTTE TERMINAL
7720 MT. HOLLY ROAD
PAW CREEK, NC
MATRIX NO. NC93073
SEPTEMBER 26, 1993
4.3 Tower Design
PAGE 7
Results from the groundwater chemical data (MW-5 and MW-2) provided by WEA, Inc.
were used to predict the constituent levels expected in the water pumped through the
airstripper. The actual levels that are found during system initial start up may reflect those
observed during the well sampling rounds. The overall predicted constituent levels in the
tower influent and effluent discharge are as follows: The treatment units will be designed
to handle stormwater run off from the terminal load rack and tank dike areas. An 8,000
gallon equalization tank and transfer pump will be installed prior to the air stripper for
flow control purposes. Accordingly, the treatment unit is sized to handle a nominal 30
gpm flowrate.
Constituent Design Influent Effluent
Benzene 30,000 9.5
Ethyl Benzene . 3,500 8.5
Toluene 58,000 34
Total Xylenes 20,000 3.6
MTBE 410 6.5
IPE 220 5*
Napthalene 1820 193
1,2 Dichloroethane 120 0.002
NOTE: All values provided in PPB (Parts Per Billion)
MTBE - Methyl tert butyl ether
ND - None detected at or above the laboratory method detection limit.
IPE - Isopropyl Ether
* - estimated
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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 WAS 1'ELOAD ALLOCATION
Request # 7852
Crown Central Petroleum Cor:AtNAid�ic- �1te Terminal
NC0046531 - 001 RONMENT, PEAL -PH
Industrial - 100% TURAL RESOURCES Existing
Renewal JUN 3 1994
unnamed tributary to Gum Branch
WS IV DIVISION OF ENVIRONMENTAL NANAGEh1E.NT
03-08-34 MOORESVILLE REGI(
NLI Mecklenburg Stream 4eristic:
Mooresvillek USGS #
Lucas Date:
5/13/94
F15SW
Drainage Area (mi2):
Summer 7 Q1 0 (cfs): 0.0
Winter 7Q10 (cfs): 0.0
Average Flow (cfs):
30Q2 (cfs): 0.0
IWC (%): 100
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Outfalls 002 and 003 no longer discharging
Facility will send GW Remediation effluent to holding pond and then discharge from Pipe 001.
GW Remediation has equipment for General Permit, but [diesel, jet fuel, kerosene] is / are waste
constituent[s], therefore a General Permit would not currently apply.
Note: Phenol monitoring required due to WS calssification
Special Schedule Requirements and additional comments from Reviewers:
Recommended by:
Reviewed by
Instream Assessment: ..�
Regional Supervisor:
Permits & Engineering:
Farrell Keough
RETURN TO TECHNICAL SUPPORT BY:
/71
Date: 2S MAY 1919
Date: 5-
Date: WU--
Date: 61/flM
J U N 2 9 1994

Existing Limits
Flow (MGD)
Oil and Grease (mg/1):
pH (SU):
Settleable Solids (ml/1):
Tubidity * (NTU)
Benzene (µg/1):
Toluene (µg/!):
Xylene (14/1):
MTBE (4/1):
Ethylbenzene
Isopropyl Ether (µg/1):
Naphthalene (pg/1):
Dibromoethane [EDB] (µg/1):
TOXICS/CONVENTIONAL PARAMETERS
Mon. Avg.
0.0044
30
0.1
monitor on same
monitor on same
monitor on same
monitor on same
monitor on same
monitor on same
monitor on same
monitor on same
Daily Max. Frequency
variable
60 2/month
6-9 2/month
0.2 2/month
50 2/month
schedule as whole effluent toxicity test
schedule as whole effluent toxicity test
schedule as whole effluent toxicity test
schedule as whole effluent toxicity test
schedule as whole effluent toxicity test
schedule as whole effluent toxicity test
schedule as whole effluent toxicity test
schedule as whole effluent toxicity test
* The discharge shall cause the turbidity of the receiving water to exceed 50 NTU. If the turbididty exceeds these
levels due to natural background conditions, the discharge level cannot cause any increase in the turbidity of the
receiving water.
Recommended Limits
Flow (MGD)
Oil and Grease (mg/1):
pH (SU):
Settleable Solids (ml/1):
TSS (mg/1):
'rabidity * (NTU)
Benzene (µg/1):
Toluene (41):
Phenols (14/1:
Xylene (µg/1):
MTBE (µg/1):
Ethylbenzene (4/1):
+Flourene (µg/l):
+Naphthalene (µg/1):
+Phenanthrene (4/1):
+Pyrene (µg/l):
Lead ** (µg/1):
Mon. Avg.
0.0432
nr
Daily Max.
variable
45
6-9
nr
45
50
1.19
11
1.0
Frequency
2/month
2/month
2/month
2/month
2/month
2/month
2/month
monitor on same schedule as whole effluent toxicity test
monitor on same schedule as whole effluent toxicity test
monitor on same schedule as whole effluent toxicity test
monitor Qrtly
monitor Qrtly
monitor Qrtly
monitor Qrtly
25.0 2 / month
WQJEL
WS classifiaction
WS classifiaction
WS classifiaction
GW Remediation
GW Remediation
GW Remediation
GW Remediation
GW Remediation
+ Four major constituents to monitor for GW Remediations which have either diesel, keosine, or jet fuel.
* The discharge shall cause the turbidity of the receiving water to exceed 50 NTU. If the turbididty exceeds these
levels due to natural background conditions, the discharge level cannot cause any increase in the turbidity of the
receiving water.
** If leaded fuels are present
Type of Toxicity Test
Monitoring Schedule:
Instream Monitoring
Acute / Fathead Minnow 24 hr
Annual
nr
_x_ 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.

I� e
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Special Instructions or Conditions
All volumes of wastewater leaving the facility must be monitored. If continuous monitoring is not feasible, then the
discharger shall record the approximate times that discharge began and ended, along with the instantaneous flow at the
time of effluent sampling. Analysis for Benzene, Toluene, and Xylene should be accomplished using an EPA approved
method to a detection level of at. least 1 ppb. Also recommend monitoring for methyl tert-butyl ether (MTBE), Ethyl
benzene, Fluorene, Naphthalene, Pheneathrene, and Pyrene should be accomplished using an EPA approved method.
Monitoring for methyl tert-butyl ether (MTBE) and Ethyl benzene should be performed at the same time that the whole
effluent toxicity test sample is taken annually. Monitoring for Fluorene, Naphthalene, Pheneathrene, and Pyrene should
be performed quarterly. A reopener clause should be placed in the permit to allow limits to be placed on toxicants should
the facility fail its whole effluent toxicity test.
Explain exact pathway of discharge ( i.e. storm sewer to tributary, etc.)
Additional Information attached? (Y or N) If yes, explain with attachments.

-5
Facility Name Crown Central Petroleum Permit # NC0046531 Pipe # 001
ACUTE TOXICITY MONITORING (ANNUAL)
The permittee shall conduct annual 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. The permittee will conduct one test annually, with
the annual period beginning in January of the calendar year of the effective date of the permit. 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 measurements
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 0.0 cfs
Permitted Flow n/a MGD Recommended , :
WIC 100 % _______--
Basin & Sub -basin 03-08-34
Receiving Stream ut Gum Branch
County Mecklenburg Date zs Awe 07,4
AAM Fathead 24 Version 10/91

Facility Name: Crown Central Petroleum Corporation - Charlotte
Permit Number: NC0046531
Engineer: Lucas
Subbasln: 03-08-34
Receiving Stream: unnamed tributary to Gum Branch
USGS quad #: F15 S W
Request Number: 7852
Date: 5/13/94
Expiration date: 8/31/94
Existing WLA checked: x
Staff Report:
Topo checked: x
USGS Flows confirmed:
PIRF / APAMS: nr
IWC Spreadsheet: nr
Stream Classification: x VVS IV
Nutrient Sensitivity:
Instream Data:
Brief of WLA Analysis
Previous WLA's
1985: 011 & Grease 30 / 60 mg/l (monthly / daily), pH 6 - 8.5 SU
1990: 011 & Grease 30 / 60 (monthly / daily) mg/1, Settleable Solids 0.1 / 0.2 (monthly / daily) ml/L, pH 6 - 9 SU,
Turbidity 50 NTU, Episodic Toxicity Test, monitor benzene, toluene, xylene, ethylbenzene, isopropyl ether,
naphthalene, dibromoethane (EDB), methyl-tert-butyl.
Toxicity Tests
Six Episodic tests have been completed. All have had >100 % LC50
DMWs
Seem to be taking samples on a quarterly basis. "No Discharge" written on months without samples.
Staff Report
Well maintained facility, with accurate record keeping.
Outfalls 002 and 003 are not used and kept locked; any flow to their catch basins is pumped to 001 outfall.
Compliance Sampling Inspection September 8,1993
Correspondence files indicates that even though outfalss 002 and 003 are not used, the Permittee desires NPDES Permits to remain in
force for these outfass. Talked with GT Chen on 25 May, 1994 and he confirmed that facility does not want to renew their Permits for
002 and 003 as these discharges have been sealed.
Parameter Quantity Detected
Benzene <1.0 p911
5.8 µg/1
<4.0 µg/I
< 4.0 µg/1
<1.0µg/1
< 4.0 µg/1
16.0 µg/1
24 µg/l
Toluene < 1.0 µg/1
14.1 µg/1
1.2 µg/1
< 4.0 µg/l
<1.0µg/1
< 4.0 µg/I
30 µg/1
104 µg/I
xylene
< 1.0 mg/1
10.7 µg/1
1.8 µg/I
< 4.0 µg/I
<1.0µg/l
< 4.0 µg/1
67 µg/1
115 µg/I
Month
4/7/94
5/6/94
6/26/92
6/16/92
4/15/92
3/17/92
1/22/92
11/27/91
4/7/94
5/6/94
6/26/92
6/16/92
4/15/92
3/17/92
1 /22/92
11/27/91
4/7/94
5/6/94
6/26/92
6/16/92
4/15/92
3/17/92
1/22/92
11/27/91
comments...
standard 1.19 µg/l [WS classification]
standard 11 µg/l [WS classification]
no standard: monitor

Ethylbenzene < 1.0 µg/I
< 4.0 µg/l
< 4.0 µg/I
< 4.0 µg/l
<1.0µg/l
< 4.0 µg/l
9.0 Nil
23 µg/l
Naphthalene < 1.0 µg/1
< 4.0 µg/I
< 4.0 µg/1
< 4.0 µg/I
< 1.0 µg/I
< 4.0 µg/l
1.0 µg/I
12µg/l
Dlbromoethane, < 10.0 mg/I
1,2 [EDB] <4.0µg/l
< 4.0 µg/1
< 4.0 µg/I
< 1.0 mil
< 4.0 µg/1
< 4.0 mil
< 4.0 NA
Methyl-tert-butyl- < 10.0 µg/I
ether [MTBEJ < 10.0 NA
<10.0µg/1
< 1.0 Nil
< 10.0 NA
< 10.0 µg/I
< 10.0 µg/l
Isopropyl Ether < 10.0 µg/I
<10.0µg/I
< 10.0 µg/1
< 1.0 µg/1
< 10.0 µg/1
< 10.0 µg/I
<10.0µg/I
4l //a4
5/6/94
6/26/92
6/16/92
4/15/92
3/17/92
1 /22/92
11/27/91
4/7/94
5/6/94
6/26/92
6/16/92
4/ 15/92
3/17/92
1/22/92
11/27/91
4/7/94
5/6/94
6/26/92
6/16/92
4/15/92
3/17/92
1/22/92
11/27/91
5/6/94
6/26/92
6/16/92
4/15/92
3/17/92
1/22/92
11 /27/91
5/6/94
6/26/92
6/16/92
4/15/92
3/17/92
1 /22/92
11/27/91
325 µg/1
no standard: monitor
no standard: monitor
no standard: monitor
no standard: monitor
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Page 1
Note for Farrell Keough
From: Jay Lucas
Date: May 16, 19941:59 PM
Subject: RE: NC0046531
To: Farrell Keough
A granular activated carbon filter.
From: Farrell Keough on Mon, May 16, 1994 1:57 PM
Subject: RE: NC0046531
To: Jay Lucas
what's a GAC filter?
From: Jay Lucas on May 16, 1994 1:53 PM
Subject: RE: NC0046531
To: Farrell Keough
The groundwater goes through an oil/water separator then to a holding tank then to an air
stripper and GAC filter.
From: Farrell Keough on Mon, May 16, 1994 11:45 AM
Subject: NC0046531
To: Jay Lucas
Crown Central Petroleum - Charlotte
is the GW Remediation pumped to a holding tank and then discharged via outfall 001?
Is there an airstripper and series carbon filter attached to this GW Remediation?
Tell me about this discharge, if you would thanks