NC0065587_wasteload allocation_19910930

NPDES DOCUMENT SCAMMIMS COVER SHEET
NPDES Permit: NC0065587
Frye Bridge WWTP
Document Type: Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Speculative Limits
201 Facilities Plan
Instream Assessment (67B)
Environmental Assessment (EA)
Permit
History
Document Date: September 30, 1991
Thies document is printed oa reuse paper - Igrzore any
contest oa the rewere<e M-1ae

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO065587
PERM117EE NAME: Mid South Water Systems, Inc.
FACILITY NAME: Frye Bridge Wastewater Treatment Plant
Facility Status: Existing
Permit Status: Renewal
Major
Pipe No.: 001
Minor
Design Capacity: 0.027 MGD
Domestic (% of Flow):
Industrial (% of Flow):
Comments:
STREAM INDEX: 12-94
100 %
RECEIVING STREAM: an unnamed tributary to Muddy Creek
Class: C
Sub -Basin: 03-07-04
Reference USGS Quad: D17NE, Welcome (please attach)
County: Forsyth
Regional Office: Winston-Salem Regional Office
Previous Exp. Date: 7/31/91 Treatment Plant Class: II
Classification changes within three miles:
Ca. 5 mi. to WS-III Yadkin.
Requested by: Jule Shanklin Date: 8/21/91 _
Prepared by: sr� _ Date: g. gG • 9/
Reviewed by: Dater 7 �7
Modeler
Date Rec.
#
w
BZZgt
Drainage Area (mi`) O. 2 Avg. Streamflow (cfs): Q. ;2---
7Q10 (cfs) b .6 o Winter 7Q10 (cfs) D .D(p 30Q2 (cfs) es, %-a
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
ParametersZ6
Upstream 4.r Location 6Z " 4-r4-a s c
Downstream c s _ Location 0.3m*, &wn 56,&tl al,s 1Q f3
bra 4C U�1 `•1+� iJ�u C� �Jr1�
Effluent
Characteristics
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (µg/1):
Comments:
For three years:
Monthly Average
Summer
Winter
0.027
0.027
30
30
monitor
monitor
5.0
5.0
30
30
260
200
6.0-9:0
6.0-9.0
monitor
monitor
After three years:
Monthly Average
Summer
Winter
0.027
0.027
5.0
10.0
1.0
1.8
6.0
6.0
30.0
30.0
200.0
200.0
6.0 - 9.0
6.0 - 9.0
17D
17.0
Facility discharges to stream with 7Q10/30Q2
= 0. Removal of discharge is recommended
in three years or new limits will apply at that
time. Facility must submit an engineering
report within 12 months of the -effective date
of this permit showing no alternative to
surface water discharge.

r
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
Frye dridge WWTP
NC0065587
Domestic - 100%
Existing
Renewal
UT to Muddy Creek
C
03-07-04
Forsyth
Winston-Salem Regional Office
Jule Shanklin
8/21/91
D17NE
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Request #
RECEIVED
N.C. Dept. NRCD
SEP 17 11"T
6399 Regional Office
Cream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
est 211594920
1986
0.21
0.0
0.1
0.20
0.0
100
Facility discharges to stream with 7Q10/30Q2 = 0. Removal of discharge is recommended in
three years or new limits (page 2) will apply at that time. Facility must submit an engineering
report within 12 months of the effective date of this permit showing no alternative to surface water
discharge.
Instream measurments of DO levels in summer months of 1991 were high for the recorded water
temperature. The levels were above saturation at those temperatures. Q m d �. 'S r� to yd ed
Q5 /0 Moll av /o• l �g--J r v 5eVe`aJ vYtoNAtM Xkb(,J v/-.s4-1, ddrul.CTaw-Svw)
Special Schedule Requirements and additional comments from Reviewers:
'2A 10 6. u4Z =o f r,
Recommended by: Date: 4 9
Reviewed by
Instream Assessment: ��h yam- Date: �' o
Regional Supervisor: dw
Date: r'
Permits & Engineering: AJ- Date: L>f
RETURN TO TECHNICAL SERVICES BY:
OCT 10 1931

2
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/1):
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):
Limits Changes Due To:
CONVENTIONAL PARAMETERS
Monthly Average
Summer Winter
0.027 0.027
30 30
5.0
5.0
30
30
1000
1000
6.0-9.0
6.0-9.0
monitor
monitor
For three years:
Monthly Average
Summer
Winter
WQ or EL
0.027
0.027
30
30
-Et-lJ4
monitor
monitor
5.0
5.0
WQ
30
30
EL
200
200
EL
6.0-9.0
6.0-9.0
EL
monitor
monitor
Parameter(s) Affected
After three years:
Monthly Average
Summer
Winter
WQ or EL
0.027
0.027
5.0
10.0
WQ
1.0
1.8
WQ
6.0
6.0
WQ
30.0
30.0
WQ. CL
200.0
200.0
W$
6.0 - 9.0
6.0 - 9.0
YVQ-
17.0
17.0
WQ
Change in 7Q10 data
New regulations/standards Fecal C ( iform
New procedures -T—eV*p � 1 of) FYD U¢ 4) OkAD r i r`Q
New facility information
Change in stream classification
Other
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.
No parameters are water quality limited, but this discharge may affect future allocations.

INSTREAM MONITORING REQUIREMENTS
Upstream Location: 50 feet upstream of discharge point
Downstream Location: SR 1493 bridge over UT to Muddy Creek
Parameters: DO, Temperature, Conductivity, pH and Fecal Coliform
Special instream monitoring locations or monitoring frequencies:
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
AdZuacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes Now Summer/Punter limits after 3 yrs.
If no, which parameters cannot be met? 5 0 0 = 5.0 & 10 : N Hs - N = 1.0 & 1.8 (m g / 1
4 Residual Chlorine
Would a "phasing in" of the new limits be appropriate? Yes X No
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
This office concurs with the 3 Year schedule.
If no, why not?
Special Instructions or Conditions
Wasteload sent to EPA? (Major) --a-- (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? N (Y or N) If yes, explain with attachments.

ne
IfiSGS if 21 1 s s 9t9 za
3mgz
Z

V• zY 4 I
Facility Name:— ,ca-UJTP--------------------
Instream Monitoring
Year Month DO Fecal Coliform Conductivity Temperature
Y
e
fie•
;�3
1 "1
5v
1
m
72
YT
zy
cs -�
AO. /
i o !o
14"'Wr
/CO•U
1791
5f
b'• 5
ti~ 3 i
� bg.rf

II
Ammonia/Chlorine Worksheet
II
IlFacility:
II
([Frye Bridge WWTP
Permit Number:
NCO065587 II
IlReceiving Stream:
Modeler:
njb II
IIUT to Muddy Creek
II
Date:
30-Aug-91 II
II
II-------------------------------------
Ilsummer
I -------------------------------------II
I
II
IlNitrogen as NH3
IResidual Chlorine
II
II
II 7Q10 (cfs):
0
I
1 7Q10 (cfs):
II
0.000 II
II Design Flow (MGD):
0.027
I Design Flow (MGD):
0.027 I1
II Design Flow (cfs):
0.042
I Design Flow (cfs):
0.042 II
II Stream STD (mg/1):
1.000
I Stream STD (ug/1):
17.000 II
IlBackground level (mg/1):
0.220
IBackground level (ug/1):
0.000 II
11 IWC (%):
100.000
1 IWC (t):
1.000 II
IIAllowable concentration
(Allowable concentration
II
II of NH3-N (mg/1):
1.000
1 of Chlorine (ug/1):
17.000 II
II
(Allowable concentration
II
0I
11Winter
P
of Chlorine (mg/1):
0.017 II
IlNitrogen as NH3
I
II
II
II 7Q10 (cfs):
0.100
I
I
II
II
II Design Flow (MGD):
0.027
I
II
II Design Flow (cfs):
0.042
I
II
II Stream STD (mq/1):
1.800
I
II
IlBackground level (mg/1):
0.220
I
II
II IWC (%):
0.295
I
II
IIAllowable concentration
I
II
II of NH3-N (mg/1):
II---------------------------------------------------------------------------II
5.575
I
II

Facility Name e ~ t •e N t ', `'TT Permit 40_D Pipe # op 1
CHRONIC TOXICITY P RMIT LIMIT (QRTRLY)
(**Chronic Toxicity (Ceriodaphnia) ChV at 8=� %, �k.ALv F� �See Part 3, Condition
The effluent discharge shall at no time exhibit 48 hour acute toxicity as lethality in an
effluent concentration of 5Y % nor measure a quarterly arithmetic average chronic value
less than this same percentage of waste. The chronic value will be determined using the
geometric mean of the highest concentration having no statistically detectable impairment of
reproduction or survival and the lowest concentration that does have a statistically
detectable impairment of reproduction or survival. The presence of 48 hour acute toxicity
will be determined using Fisher's Exact Test at 48 hours from test initiation. Collection
methods, exposure regimes, and further statistical methods are defined in: The North
Carolina Phase IT Chronic Whole Effluent Toxicity Test Procedure (July, 1991) or
subsequent versions.
The permit holder shall perform at a minimum, Quarterly monitoring using these procedures
to establish compliance with the permit condition. The fast test will be performed after
thirty days from issuance of this permit during the months of , V. feb iU
Effluent sampling for this testing shall be performed at the NPDEfi permitted final dfluent
discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter measures 48 hour acute
toxicity or a chronic value less than that specified above, then multiple concentration testing
shall be performed, at a minimum, in each of the two following months.
All toxicity testing results required as part of this permit condition will be entered on the
Effluent Discharge Monitoring Form (MR-1) for the months in which tests were
performed, using the parameter code THP3B for the Chronic Value and TGA3B for the 48
hour Acute Toxicity measure (Pass/Fail). Additionally, DEM Form AT-3 (original) is to be
sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, NC 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 this monitoring requirement 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.
Permitted Flow rU . o 2 7 MGD
7Q10 ®. 0 3 cfs
lWC vrl. ;7— % I -
Recommended by:
Basin & Sub -basin ,'—07-0`/
Receiving Stream UT ---to I
County,,4?5;�6 j AA
Date: a• k - .1 (
PIIQLR Version 7191