NC0000639_Wasteload Allocation_19941013

NPDES DOCUHENT SCANNING COVER SHEET
NPDES Permit:
NC0000639
Sapona Manufacturing Company
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Permit
History
Document Date:
October 13, 1994
Thiia document is printed on reumee paper - izore any
content on the relirertme aide

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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:
RECEIVED
�R
N.C. Dept.
FACT SHEET FOR WASTELOAD ALLOCATION OCT ©3 1994
Request #
B ;�son-S,alem
Sapona Manufacturing - Groundwater RemediatiRegiOflal Officeo
NC0000639 - Outfall 003 only
Industrial - 100%
Existing;-eutfall-003 - Proposed
Modification - okaC', L; o v- O.E' ob 3
Deep River
C
03-06-09
Randolph
Winston-Salem
D. Bolden
E2ONW
Refer : Basinwide / Streamline WLA File
Completed By Permits & Engineering
At Front Of Subbasin
Stream Characteristic: From WLA
completed 4-20-89
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
4-20-89
250
11.0
290.0
0.03
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
The application is for the remediation of Number 2 Fuel Oil contaminated groundwater. This site
can not be covered under NCG510000 due to the presence of Number 2 Fuel Oil. This discharge
will be added to the existing permit as outfall 003. No parameters are limited due to the very low
influent concentrations and almost complete removal of those constituents by the treatment system
Monitoring for Naphthalene. Ethyl benzene, and Xylene weregiven per SOP and due to the
likelihood they will occur in the wastewater. Limitations and monitoring for existing outfalls 001
and 002 will remain unchanged.
Special Schedule Requirements and additional comments from Reviewers:
W5R. - Pacecrl as-
Recommended by: Pawlet Date: 9-2"of
Reviewed by
Instream Assessment: .. _ 3 Date: q/.)1 /9 L/
Regional Supervisor: ' Date: /4-6`9;
i
Permits & Engineering: Date: 0
RETURN TO TECHNICAL SUPPORT BY: OCT 2 9 1994
O
PLOntD
\d

2
Type of Toxicity Test:
Existing Limit:
Recommended Limit:
Monitoring Schedule:
Recommended Limits
TOXICS/CONVENTIONAL PARAMETERS
None - Petroleum contaminated groundwater
Mon. Avg. Daily Max. Frequency WQ/EL
Flow (MGD): * 0.00216 Continuous
pH (SU): 6.0 - 9.0
Ethyl benzene (14/1): monitor
Xylene (41): monitor
Naphthalene (14/1): monitor
*All volumes of flow leaving the system shall be monitored. A continuous recording flow meter
shall be installed on the effluent pipe of the treatment system.
4 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.
OR
No parameters are water quality limited, but this discharge may affect future allocations.
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Special Instructions or Conditions
BTEX parameters 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. Recommend
quarterly monitoring for those chemical parameters to be limited or monitored. 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.
Explain exact pathway of discharge ( i.e. storm sewer to tributary, etc.)
The discharge will flow along the same drain the outfall 002 coiling water is discharged into. The
drain is directly to the Deep River.
Additional Information attached? (Y or N) If yes, explain with attachments.

NC0000639 - outfall 003 only
Sapona Manufacturing
Background
Application was made for coverage under NCG510000 for discharge of
conatminated groundwater. This discharge is not eligible for coverage under
NCG510000 because the contamination is from a Number 2 Fuel oil leak. The
discharge will flow along the same drain the outfall 002 coiling water is
discharged into. The drain is directly to the Deep River, a class C stream.
Schematic - see attached
Current WLA Approach/Recommendations
The recommended limits and monitoring requirements are based on the waste flow (Qw),
the S7Q10 flow, and the average stream flow (QA) and the Water Quality Standards for
Freshwater Classes. See attached for complete calculations. No parameters are limited
due to the very low influent concentrations and almost complete removal of those
constituents by the treatment system Monitoring for Naphthalene, Ethyl benzene, and
Xylene were given per SOP and due to the likelihood they will occur in the wastewater.

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Permit Number:
NC0000639
GW Fact Sheet
Calcs
Facility Name:
Sapona Manufacturing - GW Remediation
Tmt Efficiencyt:
99.99%
Waste Flow (MGD):
0.00216
IWC:
0.0003043
Waste Flow (CFS)
0.003348
Dilution:
3286.5436
S7Q10 (CFS):
11
t - These parameters calculated assuming 92% removal efficiency
regardless of "Treatment Efficiency" entered.
Predicted
Standard
Highest Conc.
Eff. Conc.
Allow. Conc.
L/M/-
Parameter
µg/I
µg/I
µg/I
µg/1
Chlorobenzene
21000
1.3
0.00013
69017416
---
MTBEt
None
3.3
0.264
N/A
---
Benzene
71.4
4
0.0004
234659.21
-111•-
1,1,1-Trichloroethane
None
4.6
0.00046
N/A
---
Ethly benzene
325
5.2
0.00052
1068126.7
Monitor - SOP
1,1-Dichloroethane
None
5.7
0.00057
N/A
---
Fluoranthene
300
7
0.0007
985963.08
---
Naphthalenet
None
8.3
0.664
N/A
Monitor - SOP
Toluene
11
8.5
0.00085
36151.98
---
Florene
1300
10.9
0.00109
4272506.7
---
N-Nitrosodiphenylamine
5
14.8
0.00148
16432.718
---
Xylene
None
33.3
0.00333
N/A
Monitor - SOP
pH
6.0 - 9.0 S.U,
bier - SOP
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