NC0066028_Wasteload Allocation_19920109

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO066028
PERMITTEE NAME: Town of Lansing
FACILITY NAME: keo. of LAN610& W1rP
Facility Status: Existing
Permit Status: Renewal
Major
Pipe No.: 001
Design Capacity:
Minor q
0.050 MGD
Domestic (% of Flow):
Industrial (% of Flow):
Comments:
100 %
STREAM INDEX: 10-2-21-(7)
RECEIVING STREAM: Big Horse Creek
Class: C
Sub -Basin: 05-07-02
Reference USGS Quad: B 12NE, Warrensville (please attach)
County: Ashe
Regional Office: Winston-Salem Regional Office
Previous Exp. Date: 7/31/91 Treatment Plant Class: ?
Classification changes within three miles:
> 3mi.
Requested by: Sha Jule nklin Date: 6/14/91
Prepared by: Date:
Reviewed b Date: 1 3 a'
1/9/yL
Modeler
JDateRec.
I #
h",a
(@t,k t
bz 6
Drainage Area (mil ) S. _5 Avg. Streamflow (cfs): i8
7Q10 (cfs) /-3 Winter 7Q10 (cfs) 17 30Q2 (cfs) zz
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
, 4.
Parameters fr—ca gw+
Upstream Y Location S mac.. Jf Aar
Downstream y Location f Y i�97 J
Effluent
Characteristics
Summer
Winter
BOD5 (m )
30
NH -N (mg/1)
D.O. (mg/1)
�
TSS (mg/1)
30
F. Col. (/100 ml)
PH (SU)
6
l
�rnair
4
Comments:
i

WARRENSVILLE QUADRANGLE g `yG
NORTH CAROLINA—ASHE CO.
7.5 MINUTE SERIES (TOPOGRAPHIC) 00
�2'30"453 1260000 FEETI / °54 13 MlTO U.S\58
81°30'
STUROILLS 4.7 MlloulA% OF LAXS/Af67 36°30'
WW iP
- n , Lai14�1
Q / / 2 jo
f y 4039 .
�o wAgkcNs V %LL-t
194
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/
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.o Zhu C f
y/ o
4037
71
'Grave
1000000
/ �• a �� FEET
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Hi f
4035
nsyllie
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194 V

r
RECEIVE ?
N.C. uu,,,. 1.110
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
Town of I W SIP inc 92
NC006602$
100% Domestic
Existing
Renewal
Big Horse Creek
C
050702
Ashe
Winston-Salem Regional Office
Shanklin
6/14/91
B12NE
Request #
DEC tI 6 1991
6298 wlnSton-Salem
Regional Office
Stream Characteristic:
USGS #
0316221500
Date:
11/21/91
Drainage Area (mi2):
55.3
Summer 7Q10 (cfs):
13
Winter 7Q10 (cfs):
17
Average Flow (cfs):
88
30Q2 (cfs):
22
IWC (%):
0.64
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Facility requesting renewal of existing permit. Due to new dilution ratio for fecal coliform limit,
facility should now have fecal limit. Tech Support recommends renewal of existing limits with
fecal monitoring, also upstream and downstream monitoring for fecal coliform.
Special Schedule Requirements and additional comments from Reviewers1:
Recommended by: ;���.Date: 11/26/91 _
Reviewed by
Instream Assessment:
Regional Supervisor:
Permits & Engineerin
RETURN TO TECHNICAL SERVICES BY:
DEC 31 1"1
i/

CONVENTIONAL PARAMETERS
Existine Limi
Monthly Average
Summer Winter
Wasteflow (MGD):
0.050
BODS (mg4):
30
NH3N (mg/1):
nr
DO (mg/1):
nr
TSS (mg/1):
30
Fecal Col. (/100 ml):
or
pH (SU):
or
Residual Chlorine (µg/1):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
Recommended Limi
Monthly Average
Summer Winter
Wasteflow (MGD):
0.050
(mg/1):
0
NH3N /1):
nr
DO (mg/1):
nr
TSS (mg/1):
30
Fecal Col. V100 ml):
monitor
pH (SU):
nr
Residual Chlorine (µgh):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
Limits Changes Due To:
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow
Other (onsite toxicity study, interaction, etc.)
Instream data
New regulations/standards/procedures
New facility information
WQ or EL
WQ
Q
N 113 Al
Parameter(s) Affected
Fecal Coliform
(explanation of any modifications to past modeling analysis including new flows, rates, field data,
interacting discharges)
_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
•j
No parameters are water quality limited, but this discharge may affect future allocations.

a
' 3
INSTREAM MONITORING REQUIREMENTS
Upstream Location: 50 ft. upstream of discharge
Downstream Location: At State Road 1347
Parameters: Fecal Coliform
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes No
If no, which parameters cannot be met?
Would a "phasing in" of the new limits be appropriate? Yes No
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not?
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 it fits into basinwide plan)
Additional Information attached? (Y or N) If yes, explain with attachments.

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it-
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> 12

town of lansing wwtp
AMMONIA ANALYSIS
7Q10: 12.0000 cfs
NH3 Effl. Conc: 0.0000 mg/l
AL (1/1.8 mg/1) : 1000.00 ug/l
Upstream NH3 Conc.: 220.0000 ug/l
Design Flow: 0.0500 MGD
Predicted NH3 Downstream: 218.59 ug/l
0.218588 mg/1
NH3 Limit: 121774.1 ug/1
121.7741 mg/1
J

town of lansing wwtp
CHLORINE ANALYSIS
7Q10: 12.0000 cfs
CL2 Effl. Conc: 0.0000 mg/l
AL (17/19 ug/1) : 17.0000 ug/l
Upstream CL2 Conc.: 0.0000 ug/l
Design Flow: 0.0500 MGD
Predicted C12 Downstream: 0.00 ug/l
0 mg/l
CL2 Limit: 2649.258 ug/l
2.649258 mg/l