NC0020761_wasteload allocation_19931208

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO020761
PERWITEE NAME: Town of North Wilkesboro
FACILITY NAME: Town of North Wilkesboro WWTP
Facility Status: Existin
Permit Status: Renewal
Major
Minor
Pipe No.: 001
Design Capacity: 1.0 MGD
Domestic (% of Flow): 94 %
Industrial (% of Flow): 6 %
Comments:
=treatment information re ueste .
RECEIVING STREAM: the Yadkin River
Class: C
Sub -Basin: 03-07-01
Reference USGS Quad: C 14 NW (please attach)
County: Wilkes
Regional Office: Winston-Salem Regional Office
Previous Exp. Date: 4/30/94 Treatment Plant Class: III
Classification changes within three miles:
none
Requested by: Sean D. Goris
Date: 9/27/93
Prepared by: Date: 1-2 ! 9
Reviewed by: Date: % 02
Modeler,
Date Rec.
#
sA--'rA3'
917_21J3
1
Drainage Area (mi`) S,2(o Avg. Streainflow (cfs): 6 8,3_
7Q10 (cfs) /q(® Winter 7Q10 (cfs) a67 30Q2 (cfs) 3,93
Toxicity Limits:IWC 78 % LC.�"O Acute hronic 7aPtiwdd qS 6r
Instream Monitoring: s AN , APR, s uL, o CT
Parameters -Cc a( Co
Upstream ✓ Location �, s-� ,.
Downstream Location 100 Is „-sue c-
Characteristics
BOD5 (mg/1)
NH3-N (mg/1)
D.O. (mg/1)
TSS (mg/1)
F. Col. (/100 ml)
PH (SU)
Comments:
t,

FACT SHEET FOR WASTELOAD ALLOCATION
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:
Request # 7608
Town of North Wilkesboro WWTP
NCO020761
Domestic/ Industrial
Existing
Renewal
Yadkin River
C
03-07-01
Wilkes
Winston-Salem
Sean Goris
9/27/93
C14NW
Wasteload Allocation Summary
OCT 20 1993
Winston -Salle 1
Regional Office
Stream Characteristic:
USGS # dz►izo0(
Date: rz,/c 3
Drainage Area (mi2): 526
Summer 7Q10 (cfs): 196
Winter 7Q10 (cfs): 267'°
'
Average Flow (cfs): 683-�'"•
t
30Q2 (cfs): 393
'
IWC (%): 0.78
Dilution:127:1
s '-
{approach taken correspondence with region EPA etc )
Renewal per Yadkin Riverpasin schedule. This is a five year� e_ rmit. Passing
0.A s,1v4•
toxicity tests. Drop copper monitoring requiremeMcopper leve s in effluent
are insignificant (self -monitoring and ppa). A fecal coliform limit should be
added based on new Divisional procedures and instream monitoring data.
Special Schedule Requirements and additional comments from Reviewers:
Recommended by: - Date: !�11_3
Bets nson
Reviewed by
Instream Assessment: Date: 0 /5
Regional Supervisor: Date:
Permits & Engineering: - Date:
NOV 16 1993
RETURN TO TECHNICAL SERVICES BY:

CONVENTIONAL PARAMETERS
Existing Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
PH (SU):
Residual Chlorine (µg/1):
Oil & Grease (mg/1):
TP (mg/l):
TN (mg/1):
Recommended Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
PH (SU):
Residual Chlorine (µg/1):
Oil & Grease (mg/1):
TP (mg/1):
TN (mg/1):
Ionthly Average
1
30
monitor
30
monitor
6-9
monitor
monitor
Monthly Average
30
monitor
�h
30
200
6-9
28 *dechlorinatic
monitor
monitor
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
or alternate disinfection
Parameter(s_Affected
Fecal, Cl
(explanation of any modifications to past modeling analysis including new
flows, rates, field data, interacting discharges)

Type of Toxicity Test:
Existing Limit:
Recommended Limit:
Monitoring Schedule:
Existing Limits
Copper (ug/1):
Sit~ �u9�►�:
Recommended Limits
Copper (ug/1):
TOXICS/METALS
Acute, quarterly
Daphnid 48 hr LC50 78%
j'p', A PA -I tk L , OCT-
Limits Changes Due To:
Change in 7Q10 data
Relocation of discharge
Change in wasteflow
New pretreatment information
Failing toxicity test
Other (pollutant scan)
Daily max WQ or EL
monitor
ww%z4-.r-
Daily max WQ or EL
Parameters Affected
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.
X'
No parameters are water quality limited, but this discharge may affect
future allocations.
INSTREAM MONITORING REQUIREMENTS
Upstream Location: 50 yds upstream
Downstream Location: 100 yds downstream
Parameters: Fecal Coliform
Special instream monitoring locations or monitoring frequencies:

,
y
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 L�
If no, which parameters cannot be met? FECOL
Would a "phasing in" of the new limits be appropriate? Yes V No
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not?
�.' th 1 4
Wasteload sent to EPA? (Major) -,&L (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.

Facility Name ww vF /�(onrtf �cic�s8orz o tv i' Permit # A16n 20 ! Pipe # 5- r
ACUTE TOXICITY PERMIT LIMIT (QRTRLY)
The permittee shall conduct acute toxicity tests on a awrWrb basis 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 D hni pulex or feriodaphnia 48 hour static test, using effluent collected as a
24 hour composite. The LC50 of this effluent using the previously stated methodology may at no time in any
toxicity test be less than 7K%. Effluent samples for self -monitoring purposes must be obtained during
representative effluent discharge below all waste treatment. The first test will be performed afWr &LOL&US from
the effective date of this permit during the months of j M. ,. A \a o c
The parameter code for this test if using Daphnia pulex is TAA3D. The parameter code for this test if using
erida hni is TAA3B. All toxicity testing results required as part of this permit condition will be entered on the
Effluent Discharge Monitoring 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 Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting
in
association with the toxicity tests, as well as all dose/resposedt.c Total residualchlorinechlorine of thsical e efts fluent toxicity
ity
sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to Meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed: Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
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 and will require immediate
retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q 10 ! I
cfs
Permitted Flow __L,.
o MGD
IWC 6.7 ff
%
Basin & Sub -basin
03- 07 - o I
Receiving Stream
a ; n -River—
County e
QAL Daphnid 48 Version 10191
Recommended by:
Date /0 l r

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NPDES PRETREATMENT INFORMATION REQUEST FORM
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FACILITY NAME: 06-"n+ fuw77 NPDES NO. NCO Z Q % b r
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WT�lSTbrI -- �
REQUESTER: 5"A o s DATE: / Z 7/ l93 REGION: 5 t
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This facility has no SIUs and should not have pretreatment language.
This facility should and/or is developing a pretreatment program.
Please include the following conditions:
Program Development
r Phase I due _J /
Phase II due
r
Additional Conditions
r (attached) t
This facility is currently implementing a pretreatment program.
,.- ,.;; -j Please include the following conditions:
t
Program Implementation
`m ; 1.� Additional Conditions
(attached)
SIGNIFICANT INDUSTRIAL USERS' (SIUS) CONTRIBUTIONS
SIU FLOW - TOTAL:
r
r
- ODMPOSITION:
MGD'
r �
r METAL FINISHING: MGp '
r '
i OTHER: MCA
r '
MGM r
r '
r '
r M '
r '
r !
HEM,JORKS REVIEW
• • : t ula1Y�IC
Cd
Cr
cu
Ni
Pb
Zn
CN
Phenol
Other -+
PASS '
r
THROUGH DAILY LOAD IN LBS/DAY ACTUAL r
r �\
ALLOWABLE DOMESTIC PEFda= INDUSTRIAL % REMOVAL
cr, rer; a 6 .200� -
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