NC0082970_Wasteload Allocation_19930401

NPDES WASTE LOAD ALLOCATION
PERMrr NO.: NCO082970
PERMITrEE NAME:
FACILITY NAME:
Sprague Energy Corp.
Facility Status: Existing
Permit Status: New
Major
Pipe No.: 001
Design Capacity:
Domestic (% of Flow):
Industrial (% of Flow):
Comments:
Minor -4
RECT_IVING STREAAC-Cape Fear River
Class: SC
Sub -Basin: 03-06-17
Reference USGS Quad: K27NW (please attach)
County. New Hanover
Regional Office: Wilmington Regional Office
Previous Exp. Date: 00/00/00 Treatment Plant Class:
Classification changes within three miles:
Requested by: Susan Robson Date:,
Prepared by: / ✓ Date:
Reviewed by: Date:
Modeler
Date Rec.
I #
-�Rc-
3 al `3
1 -164S
Drainage Area (mi 2) Avg. Streamflow (efs): T-1 y 1
7Q10 (efs) Winter 7Q10 (efs) 30Q2 (cfs)
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters �/C}
Upstream
Location
Downstream Location
Recommended
Test/Limit: Acute 24-hour monitoring using fathead minnows
Monitoring Schedule: First five discrete discharges after/during a rain event
Recommended Limits
Monthly Avg Daily Max.
Mon. Freq.
Flow (MGD):
monitor
pH (Sin:
6.8-8.5
2/month
Oil & Grease (mg/1):
45.0
2/month
TSS (mg/1):
45.0
2/month
Benzene (µgh):
monitor
#
Toluene (µg/1):
monitor
#
Ethylbenzene (µg/1):
monitor
#
Xylene (µg/1):
monitor
#
MTBE (µo):
monitor
#
Lead (µg/l):
monitor
#
Priority Pollutant Analysis:
monitor
annually
#Monitoring should correspond with toxicity test sample collection during the first five dis
6to
dischaz�venier�pTI, . �-
%
a
4ll
(SeeAee for special
monitoring requirements.)
BTEX parameters and MTBE should be monitored using an EPA -approved method to a
detection level of 1 ppb. Permit must contain flow monitoring requirement such that all volumes
of wastewater leaving the facility are monitored. Recommend continuous flow monitoring. 1- is
monitoring should coincide with all whole -effluent 'toxicity 7Thbirss
A reopener clause should be placed in the permit to allow for additional limits on these or other
2/23/93 toxicants should the whole -effluent toxicity testing ttisults indicate toxic effects.
Comments:

S
1M4NATICNS AND MnIITORING RBthe peimittet '
A. (1) . until expiration,
t and lasting from point M.
the iod beginning on the. effective date of the perms- tad wastewater originating
During Per through outfall 002 stormwater and cones- loading/unloading areas, etc.
product transfer areas, loading/
authorized to ischarge bulk storage tank areas, p '
including► but not limited to, b the permittee as specified below:
discharges shall be Limited and rronitoring y Monitements
ori **g le
Disch a Limitations i ) *Measurement Sams, le
Effluent Characteristics: lbs/�) Other Units ( Location
( Dail A . D9iMAML. Fr en
Dail A Da_.tly �.
Weekly Instantaneous E
2/Month Grab E
Flow 30 m9/1 60 m9/1 Semiannually Catposite E
Oil and Grease *** E
**** Annually
Acute Toxicity
Priority Pollutants
•'
*Monitoring will be conducted during nonmal.wprking hours.
' ated by anY•industrial or
• e of ston�water runoff f uncont�nin nt or facility.
This permit imposes no limitation r �o any oil -wager separator or other treatment e�gL-I�
ccamrcial activity and not discharged 9h
• is specified above shall be taken at the �°���ng with
** les taken >r lianee with the monitoring rfinal treatment but prior to actual discharge to
loc nearest accessible point after location (s) . The
the receiving waters.
E -Effluent
' d 48 hr.) Monitoring► See Part III, Condition No. G.
***Acute toxicity (DaPhni
****See part III, Condition No. H.
000
The pH shall not be less than - 6.0
effluent by grab samples .
There shall be no
an 9.0 standard units and shall be rronitored weekly at th
standard units nor greater th
solids or visible foam in other than trace amounts.
NC0028568

~ ~
T
T%O
�ms
�KEX88/MP
03/0i/93
COMPLIANCE EVALUATION
ANALYSIS.' REPORT E i
PERMIT--NC0028568
PIPE--002
REPORT
PERIOD�
9002-9i0i LOC-~-E
FACILITY --UNOCAL
CORPORATION
DE%IGN FLOW--
^00O0 CLA%%--0
LOCATION .... .... WILMINGTON
REClION/COUNTY.... .... 08 NEW HANOVER
50050
TAA3B
TAA3D
O0400
00556
78i4i
MONTH
Q/M�D
CERI48AC
DAPH48AC
PH
OIL-�R%E
TTO
LIMIT
9.0 6�0
F 30.000
90/02
7.i-6.i
5^900
90/03
7.2-6.2
5^800
90/04
7.0-6.7
98/05
5-.9
7.6
5.500
LIMIT
NOL
9.0 6^0
F 30.000
90/06
^0080
7.6-6^6
1^400
90/07
.000i
7.0-6.7
i.400
90/08
.0003
7.2.... 6^9
i^770
90/09
.000i
6.8--- 6.6
3.000
90/10
^000i
7.i-6.4
i0.070
90/ii
6.7-6.3
9.i80
90/i2
.008i
6^8-6.5
5^i70
9i/0i
^0005
7^0-6.7
ii.080
AVERAGE
.000i
____--
-------- -~____~_
5^385
___~_---
MAXIMUM
^0005
----~--~
7.600
ii.080
____----
MINIMUM
.0000
____~---
____--
--------
6^i00
i^400
~~_--~--
UNIT
MGD
PERCENT
PERCENT
%U
MG/L
MG/L

~ ^
�
�
~
'
�KEX88/MP
03/0i/93
COMPLIANCE
EVALUATION
ANALY%I%REPORT
PA�E i
PERMIT--NC0028568
PIPE--002
REjr ORT
PERIOD
9i02.... 920i LOC---E
FACILITY .... ....
UNOCAL
CORPORATION
DE%IC;N FLOW--
.0000
CLA%%--0
LOCATION--WILMING*TON
RION/COUNTY
.... .... 08 NEW HANOVER
50050
TAA3B
TAA3D
004,2) 0
00556
78i4i
MONTH
Q/M�D
CERI48AC
DAPH48AC
PH
OIL-GR%E
TTO
LIMIT
NOL
9^0 6.0
F 30.000
91 /0 2
.0001
6.5-6^3
2.580
91/03
.000i
6^7~6.5
6^650
91/04
^0001
6.7-6^5
2^480
9i/05
.000i
7.0-6.5
Al
91/06
.000i
6.9-6.6
4^800
91/07
^0006
7.0.... 6.6
2.9040
941/09
.0001
6.6.... 6.4
7^200
9i/i0
^00i0
6.9-6.9
2.900
.0020
5.080
9i/i2
^0001
7^0-6.5
5.200
92/0i
.000i
^
6 9 - 6 ^ 4
6 400
^
AVE RAG* E
.0004
~__----- --------
4 .635
.. . ....
MAXIMUM
.0020
__-
--~-----
7.200
7.200
MII'll IMUM
.000i
.... _.... _.... -.... ....
.... .... .... .... .... .... .... ....
6.300
2^480
UNIT
M�D
PERCENT
PERCENT
%U
MC/L
M�/L

�KEX88/MP
03/0i/93
COMPL%ANCE
EVALUATION ANALY%I%
REPORT
PAmE i
PERMIT--NC0028568
PIPE--002
REPORT
PERIOD�
9202-930i LOC---E
FACILITY --UNOCAL
CORPORATION
DE%IGN FLOW-- .0000
CLA%%--0
LOCATION .... .... WILMIN
REGION/COUNTY.... .... 08 NEW HANOVER
50050
AA T3B
TAA D
00400
00556
78i4i
MONTH
Q/MGD
CERI48AC
DAPH48AC
PH
OIL .... CIR%E
TTO
LIMIT
NOL
9
^ 0 , 6 0
F 30 000
^
92/02
.0002
7^2-6.5
5^300
92/03
^0003
7.i-6�4
i.700
92/04
^0003
6.8-6^5
.950
92/05
.000O
7^0-6^5
1.500
92/O6
.00O8
7.2-6^8
3.000
92/07
^0003
7^0
.... 6.5
i0^300
92/08
.8004
7.0-6.0
6.200
92/i0
^0003
7.3-6.3
4^500
92/ii
.0003
7.4
.... 6^4
2.400
92/i2
.0002
6.9-6.3
5^000
93/01
.O003
6.3
6.308
AVERA�E
.0O03
__~~---~
-_-~--~~
_____-~_
^
4 286
~~______
MAXIMUM
.0008
-----
------~_
7.600
i0.300
__~-----
MINIMUM
.0000
----
_------_
6^800
.95O
__------
UNIT
M�D
PERCENT
PERCENT
%U
M�/L
M�/L

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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 WASTELOAD ALLOCATION
Sprague Energy Corporation
NC0082970
Industrial - 100%
Existing
New
Cape Fear River
SC
030617
New Hanover
Wilmington
Robson
2/23/93
K27NW
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Request # 7348
Stream Characteristic: TIDAL
USGS #
Date:
Drainage Area (mil)
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
Formerly permitted as two pipes, this WLA applies only to one pipe now since the other is being
permitted under the name UNOCAL (NC0028568). Episodic monitoring for toxicity is being
required with the additional instructions to monitor during or directly after a storm event. BTEX,
lead, and MTBE should be monitored during the fast five discharge events per SOP. Also per
SOP, 2/month monitoring for TSS, pH, and Oil and Grease were recommended.
Special Schedule Requirements and additional comments from Reviewers:
Recommended by:
Reviewed by
Instream Assessment:
Regional Supervisor:
Permits & Engineerin
RETURN TO TECHNICAL SERVICES BY: APR 1 7 199-
C1 D

TOWS/CONVENTIONAL PARAMETERS
Recommended
Test/Limit: Acute 24-hour monitoring using fathead minnows
Monitoring Schedule: First five discrete discharges after/during a rain event
Recommended Limits
Monthly Avg Daily Max.
Mon. Freq.
Flow (MGD):
monitor
pH (SU):
6.8-8.5
2/month
Oil & Grease (mg/1):
45.0
2/month
TSS (mg/1):
45.0
2/month
Benzene (µg/1):
monitor
#
Toluene (µg/l):
monitor
#
Ethylbenzene (µg/l):
monitor
#
Xylene (µg/1):
monitor
#
MTBE (µg/l):
monitor
#
Lead (µg/1):
monitor
#
Priority Pollutant Analysis:
monitor
annually
#Monitoring should correspond with toxicity test sample collection during the first five dis ete
dischar even after/ un* vent, and annually thereafter.
So�� �•�� '�" .�h°ti� AA_
CO..15
for special monitoring requirements.)
Special Instnictions or Conditions
BTEX parameters and MTBE should be monitored using an EPA -approved method to a
detection level of 1 ppb. Permit must contain flow monitoring requirement such that all volumes
of wastewater leaving the facility are monitored Recommend continuous flow monitoring.
. This
monitoring should coincide with all whole -effluent toxicity monitoring.
A reopener clause should be placed in the permit to allow for additional limits on these or other
toxicants should the whole -effluent toxicity testing results indicate toxic effects.

04
TOXICS/CONVENTIONAL PARAMETERS
Recommended
Test/Limit: Acute 24-hour monitoring using fathead minnows
Monitoring Schedule: First five discrete discharges after/during a rain event
Recommended Limits
Monthly Avg Daily Max.
Mon. Freq.
Flow (MGD):
monitor
pH (SU):
6.8-8.5
2/month
OR & Grease (mg/1):
45.0
2/month
TS S (mg/1):
45.0
2/month
Benzene (µg/l):
monitor
#
Toluene (µg/l):
monitor
#
Ethylbenzene (µg/l):
monitor
#
Xylene (µg/l):
monitor
#
MTBE (µg/l):
monitor
#
Lead (µg/1):
monitor
#
Priority Pollutant Analysis:
monitor
annually
#Monitoring should correspond with toxicity test sample collection during the first five discrete
dui even after/ urin ain PP.��v�ent, and ann ally thereafter.
Sower n•w%lwl"q �ti°H 4A--
/
a�0�1,W,
31G .�r+a 9�, -�.,v
(See ptge4�lree for special monitoring requirements.)
Special Instructions or Conditions
BTEX parameters and MTBE should be monitored using an EPA -approved method to a
detection level of 1 ppb. Permit must contain flow monitoring requirement such that all volumes
of wastewater leaving the facility are monitored. Recommend continuous flow monitoring.
This
monitoring should coincide with all whole -effluent toxicity monitoring.
A reopener clause should be placed in the permit to allow for additional limits on these or other
toxicants should the whole -effluent toxicity testing results indicate toxic effects.

n
Facility Name 5PRt4ht1c &r_f, (1 � � Permit # g Pipe #
ACUTE TOXICITY MONITORING (EPISODIC)
The permittce 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 Wime hales
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 ling and
subsequent testing will occur during the fast five discrete discharge event ter the effective date
of this permit. After monitoring of the fast five toxicity tests, the petmittee 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 -I (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 77 %tiw cfs
Permitted Flow MGD
IWC %
Basin & Sub -basin c.F r' %L 1 7
Receiving Stream t✓arE GCn& wyE�
County ,JCw 16ityetC.
Recompapnded by:
�tZ//7d ✓n e%
I Date ✓T l� 9
i� �Cl�� a� ��7L�✓� G(�S�?/rh4(:S�jOrrlC� Ge/hG4t�G W G( /
�an/e mvh]/ r✓Yny s�jae+/Gl fire ✓elo�/� rr/hGs� wa�e✓i s �%ih�d .y. AL s�o tiy�7<a�ks.
EAM Fathead 24 Version 10191