NC0020761_wasteload allocation_19910129

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO0207 61
PERMiTTEE NAME: Town of North Wilkesboro / Town of North
Facility Status: Existing btrilkrsba�o w�rTp
Permit Status: Renewal
Major q Minor
Pipe No.: 001
Design Capacity: 1.0 MGD
Domestic (% of Flow):
Industrial (% of Flow):
Comments:
2.0 %
pretreatment information attached
RECEIVING STREAM: the Yadkin River
Class: C
Sub -Basin: 03-07-01
Reference USGS Quad: C 14 NW
County
Wilkes
(please attach)
Regional Office: Winston-Salem Regional Office
Previous Exp. Date: 3/31/91 Treatment Plant Class: Class 2
Classification changes within three miles:
none
Requested by: Rosanne Barona Date: 12/17/90
Prepared by: Date: t
Reviewed by: Date:
-a0 t> 5 s
Modeler
d
Date Rec.
#
SAW
IZ 17 So
5-96
Drainage Area (mZi) %fa Avg. Streamflow (cfs): (0$3
7Q10 (cfs) iq�, -Winter 7Q10 (cfs)_Z&7 30Q2 (cfs)
Toxicity Limits: M % Ac�;P,79
Chronic Q�y
Instream Monitoring: tc o %
Parameters
Upstream Y Location Ar L&4sr 100f WnAe wh
Downstream Y Locationfir LEA9 AOQ vsbm)
OR sR1157
Effluent
Characteristics
Summer
Winter
BOD5 (m )
3m
NH3-N (mg/1)
D.O. (mg/1)
TSS (mg/1)
F. Col. (/100 ml)
pH (SU)
Ash
�-9
AIM
EWJ' AOAI�
TVA
PLVW
Comments: $ASbc oa wm OAC 1- s+latiu,�
TAa RIM-«y-5WaA.D . MoNtT1X� Fa�2 L Coat�tzM

f
5Q(o(0
5i .5
c k,�
-1- I V
AN 2 5 19 91
FACT SHEET FOR WASTELOAD A LOCATIONS
�!� k' QUADTY SECT101,,'
Facility Name
:North Wilkesboro
WWT
111.C. DID
NPDES No.
:NC0020761
Type of Waste
:98% Domestic/2o
Industrial
`
J 2 �`)?�
Facility Status
:Existing
Permit Status
:Renewal
Winsto -Sale T4
Receiving Stream
:Yadkin River
Stream Classification:C
Regional ©face
Subbasin
:030701
County
:Wilkes
Stream Characteristics:
Regional Office
:Winston Salem
USGS # est Date
Requestor
:R. Barona
Drainage Area: 526.0
sq.mi.
Date of Request
:12/17/90
Summer 7Q10: 196.0
cfs
Topo Quad
:C14NW
Winter 7Q10: 267.0
cfs
Average Flow: 683.0
cfs
30Q2: 393.0
cfs
Wasteload Allocation Summary
Facility currently has a pretreatment program. Based on current
information, the facility should perform effluent monitoring for
Copper, Silver, and Cyanide. Per guidance for Fecal coliform, the
facility should monitor up and downstream for Fecal coliform and the
facility should monitor the effluent for Fecal coliform to determine
if a limit may be necessary. Compliance data indicates pH violations.
WASTELOAD SENT TO EPA?(Major) _Y (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 fits into basinwide plan)
Schematic and toxics spreadsheet are attached. Facility will be up for
renewal as will all facilities in 030701(Yadkin0l in May 1994).
Recommended by: wok.- ` ( .F Date: I/tv ''[
Reviewed by / /, , ,, G�
Instream Assessment: �1.� �'ki WW&•iL Date:
Regional Supervisor:!�ZLDate:
Permits & Engineering:....,�
t_ Date: i:?S
4-
RETURN TO TECHNICAL SERVICES BY: FEB 16 1991
JAN 2 � 199,
PERMITS 6
EA''GINEERING
�r
V

-a -
CONVENTIONAL PARAMETERS
Existing Limits
Monthly Average
Summer/Winter
Wasteflow (MGD):
1.0
BOD5 (mg/1):
30/30
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
30/30
Fecal Coliform (/100 ml):
PH (SU) :
Oil & Grease (mg/1):
TP (mg/1) :
TN (mg/1):
Recommended Limits
Monthly Average
Summer/winter
Wasteflow (MGD): 1.0
BODS (mg/1): 30/30
NH3N (mg/1):
DO (mg/1) :
TSS (mg/1): 30/30
Fecal Coliform (/100 ml) : MOVA to-4-
pH ( SU) :
Oil & Grease (mg/1):
TP (mg/1) .
TN (mg/1) :
Daily Maximum
6-9
Daily Maximum
Limits Chancres Due To: Parameter(s) Affected
Instream Data
Ammonia Toxicity
Chlorine
Nutrient Sensitive Waters
HQW
New 7Q10 flow data
Special Modeling Studies
New facility information
Other
No change for conventional parameters.
6-9
(explanation of any modifications to past modeling analysis
includidng new flows, rates, field data, interacting discharges, etc.)

-3-
(See page 4 for Miscellaneous and special conditions if apply)
TOXICS
Toxicty Limit Monitoring Schedule
Existing Limit: None
Recommended Limit: Acute Quarterly limit of 78%
Toxics or MQtals limit
Existing Limits Daily Maximum
Cadmium (ug/1) :
Chromium (ug/1) :
Copper (ug/1):
Nickel (ug/1):
Lead (ug/1) :
Zinc (ug/1) :
Cyanide (ug/1) :
Phenols (ug/1) :
Mercury (ug/1) :
Silver (ug/1):
Chlorine (ug/1):
Recommended Limit
Cadmium (ug/1) :
Chromium (ug/1) :
Copper (ug/1) :
Nickel (ug/1):
Lead (ug/1) :
Zinc (ug/1) :
Cyanide (ug/1) :
Phenols (ug/1) :
Mercury (ug/1):
Silver (ug/1) :
Chlorine (ug/1):
Limits Changes Due to:
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow
New pretreatment information
Failing toxicity test
Other
Daily Maximum
MONITOR
MONITOR
MONITOR
Parameter(s) Affected
Cu, Ag, CN (effluent monitoring)

-4-
tudy, interaction,= -
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Miscellaneous information pertinent to the renewal or new permit for this
discharge. Include relationship to the Basinwide management plan.
INSTREAM MONITORING REQUIRMENTS: Fecal coliform
Upstream: y Location: at least 100 ft upstream
Donwstream: y Location: at least 300 ft downstream or SR 115
Special Instream monitoring locations or monitoring frequencies:
SPECIAL INSTRUCTIONS OR CONDITIONS
SCHEDULE REQUIREMENTS:
(for P&E or region to recommend time frame for implementing new limits)
ADDITIONAL "REVIEWER" COMMENTS:
Additional Information attached? (yes or no) If yes, explain attachments.
Yes. Toxicity Test requirement, Toxics spreadsheet .3t� YnaAc 0 WtA rW*?
�d�� iYt ryvtu fisry a-44 cl-d 5-�;tct Lu1A >,� b) Apt -4eK,-t 4o EPA

Facility Name t WTI' Permit # C-002c7G 1
ACUTE TOXICITY TESTING REQUIREMENT (QRTRLY)
Daphnid 48 hr - LC50
The permittee shall conduct acute toxicity tests on a quarter 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 Daphnia pulex or
Ceriodaphnia 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 two consecutive toxicity
tests be less thanes%. Effluent samples for self -monitoring purposes must be obtained during
representative effluent discharge below all waste treatment. The first test will be performed ter
thirtyfrom issuance of this permit during the months of ►a� APK, Tu+., oGT
The parameter code for this test if using Dania pulex is TAA3D. The parameter code for this test
if using Ceriodaphnia 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: Technical Services Branch
North Carolina Division of
Environmental Management
P.O. Box 27687
Raleigh, N.C. 27611
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 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.
7Q10 N0.0 cfs
Permitted Flow I, o MGD
IWC% 0.783 _
Basin & Sub -Basin yAD ol-(oo7oi)
Receiving Stream japPAI A(V&P_
County 1
Recommended by:
C4 U/��
Date t /-7 /qo
**Acute Toxicity(Daphnid 48 hr) LC50_jLX%, TTTq, ott , See Part 3 , Condition X* .

12/27/90
ver 3.1
T O X I C
S R E V
I E W
Facility:
N. Wilkesboro
NPDES Permit No.:
NC0020761
Status
(E,
P, or M) :
E
Permitted
Flow:
1.0
mgd
Actual
Average
Flow:
0.7
mgd
subbasin:
030701
Receiving Stream:
Yadkin River
I---------
PRETREATMENT DATA -------------- I---- EFLLUENT DATA---- I
Stream Classification:
C
I
ACTUAL
PERMITTEDI
I
7010:
196.0
cfs
)
Ind. +
Ind. + I
FREQUENCY I
IWC:
0.78
%
I
Domestic
PERMITTED
Domestic I OBSERVED
of Chronicl
Stn'd /
Bkg
I Removal
Domestic
Act.Ind.
Total
Industrial
Total I Eflluent
Criteria I
Pollutant
AL
Cone.
I Eff.
Load
Load
Load
Load
Load I Cone.
Violations)
---------
--
(ug/l)
--------
(ug/1)
--------
I b
I --------
(#/d)
--------
(#/d)
-------
(#/d)
-
(#/d)
(#/d) I (ug/1)
(#vio/#sam)I
Cadmium
S
2.0
I 924
0.03
0.0008
0.031
0.0430
I
0.073 I
I
Chromium
S
50.0
I 76%
0.06
0.0023
0.062
0.2850
0.345 I
I I
Copper
AL
7.0
I 82%
0.24
0.0480
0.288
0.3450
0.585 I
I N
Nickel
S
88.0
1 324
0.10
0.0049
0.105
0.3970
0.497 I
I P
Lead
S
25.0
I 8194
0.30
0.0061
0.306
0.0720
0.372 I
I U
Zinc
AL
50.0
I 77%
0.91
0.0061
0.916
0.2470
1.157 1
I T
Cyanide
S
5.0
I 59%
0.02
0.0011
0.021
0.1080
0.128 I
I
Mercury
S
0.012
I Olt
0.0
I
I S
Silver
AL
0.06
1 946
0.02
0.0050
0.025
0.0400
0.060 I
I E
Selenium
S
5.00
1 04
0.0
I
I C
Arsenic
S
50.00
I 0P,
0.0
I
I T
Phenols
S
NA
I Ord
0.0
I
I I
NH3-N
C
I 08
0.0
I
10
T.R.Chlor.AL
17.0
I 09
I
I
0.0
I
I
I N
I
I---------------
I
ALLOWABLE
PRDCT'D
PRDCT'D
I
I
PRDCT'D--------- MONITOR/LIMIT ---------
I
i
1--ADTN'L RECMMDTN'S-- I
I
Effluent
Effluent
Effluent
Instream
I Recomm'd I
I
Cone.
using
using
Cone.
Based on
Based on Based on
I FREQUENCY INSTREAM I
I
Allowable
CHRONIC
ACTUAL
PERMIT
using
ACTUAL
PERMITTED OBSERVED
I Eff. Mon. Monitor. I
Pollutant
I
Load
Criteria
Influent
Influent
OBSERVED
Influent
Influent Effluent
( based on Recomm'd 7 I
--
I
(#/d)
(ug/1)
(ug/1)
(ug/1)
(ug/l)
Loading
Loading Data
I OBSERVED (YES/NO) I
---------
Cadmium
S
I
I
---------
26.55
-----------------
254.903
0.44
--------
1.0519
--------
0.000
-------
-----------------I
----------------- I
I I A
Chromium
S
I
221.28
6372.581
2.69
14.9137
0.000
3ErwEEN I
I N
Copper
AL
I
41.31
892.161
9.34
18.9664
0.000
Monitor L(u)monitor 69. 74 X 4 8,9ZI
1 A
Nickel
S
I
137.46
11215.742
12.85
60.8725
0.000
I
I L
Lead
S
I
139.76
3186.290
10.48
12.7307
0.000
I
( Y
Zinc
AL
I
230.90
6372.581
37.95
47.9311
0.000
I
( S
Cyanide
S
I
12.95
637.258
1.56
9.4526
0.000
Monitor I
I I
Mercury
S
I
0.01
1.529
0.00
0.0000
0.000
i
I S
Silver
AL
I
1.06
7.647
0.27
0.6484
0.000
Monitor (AI)Monitor 0.76Ix4#-0761
I
Selenium
S
I
5.31
637.258
0.00
0.0000
0.000
i
I R
Arsenic
S
I
53.11
6372.581
0.00
0.0000
0.000
1
I E
Phenols
S
1
0.000
0.00
0.0000
0.,000
I
I S
NH3-N
C
I
0.000
0.000
I
l U
T.R.Chlor.AL
I
2166.677
0.000
I
I L
I
I
IT
I
I
I S

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12/27/90
ver 3.1
T O X I C
S R E V
I E W
Facility:
N. Wilkesboro
NPDES Permit No.:
NCO020761
Status (E, P, or M) :
E
Permitted Flow:
1.0
mgd
Actual Average Flow:
0.7
mgd
Subbasin:
030701
Receiving Stream:
Yadkin River
I--------- PRETREATMENT DATA --------------
I---- EFLLUENT DATA---- I
Stream
Classification:
C
I
ACTUAL
PERMITTEDI
I
7Q10:
196.0
cfs
I
Ind. +
Ind. + I
FREQUENCY I
IWC:
0.78
$
I
Domestic
PERMITTED
Domestic I OBSERVED
of Chronicl
Stn'd / Bkg
I Removal
Domestic
Act.Ind.
Total
Industrial
Total I Effluent
Criteria I
Pollutant
AL Cone.
I Eff.
Load
Load
Load
Load
Load I Cone.
Violationsl
(ug/1) (ug/1)
I :
--------
(#/d)
--------
(#/d)
--------
(#/d)
--------
(#/d)
---------
(#/d)' I (ug/1)
-------- I --------
(#vio/#sam)I
--------- I
---------
Cadmium
--
S
----------------
2.0
I
I 924
0.03
0.0008
0.031
0.0430
0.073 I
I
Chromium
S
50.0
I 76%
0.06
0.0023
0.062
0.2850
0.345 I
I I
Copper
AL
7.0
I 821%
0.24
0.0480
0.288
0.3450
0.585 I
I N
Nickel
S
88.0
I 328
0.10
0.0049
0.105
0.3970
0.497 I
I P
Lead
S
25.0
I 81%
0.30
0.0061
0.306
0.0720
0.372 I
I U
Zinc
AL
50.0
I 778
0.91
0.0061
0.916
0.2470
1.157 (
i T
Cyanide
S
5.0
I 598
0.02
0.0011
0.021
0.1080
0.128 I
I
Mercury
S
0.012
I 0%
0.0
I
I S
Silver
AL
0.06
I 949d
0.02
0.0050
0.025
0.0400
0.060 I
l E
Selenium
S
5.00
I 09
0.0
I
I C
Arsenic
S
50.00
I op,
0.0
I
I T
Phenols
S
NA
I 08
0.0
I
I I
NH3-N
C
I 08
0.0
I
1 0
T.R.Chlor.AL
17.0
I 0$
I
0.0
I
I
I
I N
I
I
---------------
l
I
ALLOWABLE
PRDCT'D
PRDCT'D
PRDCT'D
I I
--------- MONITOR/LIMIT --------- 1--ADTN'L RECMMDTN'S-- I
I
Effluent
Effluent
Effluent
Instream
I
Recomm'd I
I
Cone.
using
using
Cone.
Based on
Based on Based on I
FREQUENCY INSTREAM )
I Allowable
CHRONIC
ACTUAL
PERMIT
using
ACTUAL
PERMITTED OBSERVED I
Eff. Mon. Monitor.
Pollutant
I Load
Criteria
Influent
Influent
OBSERVED
Influent
Influent Effluent I
based on Recomm'd ? I
(#/d)
(ug/1)
(ug/1)
(ug/1)
(ug/1)
--------
Loading
--------
Loading Data I
-----------------I
OBSERVED (YES/NO) I
----------------- I
---------
Cadmium
--
S
i---------
I 26.55
--------
254.903
---------
0.44
--------
1.0519
0.000
1
I A
Chromium
S
I 221.28
6372.581
2.69
14.9137
0.000
3EfEN I
I N
Copper
AL
I 41.31
892.161
9.34
18.9664
0.000
Monitor L(u)Monitor 61.Z, X4 e,9Zl
I A
Nickel
S
I 137.46
11215.742
12.85
60.8725
0.000
I
I L
Lead
S
I 139.76
3106.290
10.48
12.7307
0.000
I
I Y
Zinc
AL
I 230.90
6372.581
37.95
47.9311
0.000
I
I S
Cyanide
S
I 12.95
637.258
1.56
9.4526
0.000
Monitor I
I I
Mercury
S
( 0.01
1.529
0.00
0.0000
0.000
I
I S
silver
AL
I 1.06
7.647
0.27
0.6484
0.000
Monitor (AI)Monitor 0-761X40.0761
I
Selenium
S
( 5.31
637.258
0.00
0.0000
0.000
I
I R
Arsenic
S
I 53.11
6372.581
0.00
0.0000
0.000
I
I E
Phenols
S
I
0.000
0.00
0.0000
0.000
I
I S
NH3-N
C
I
0.000
0.000
I
l U
T.R.Chlor.AL
I
2166.677
0.000
I
I L
l
I
I T
( S

North Carolina Division of Environmental Management
Water Quality Section / Intensive Survey Unit
December 6, 1990
'MEMORANDUM
To: Ruth Swanek
Through: Jay Sauber BPS f*A.-
From: Howard Bryant$
Subject: Longterm BOD Analysis,North Wilkesboro WWTP
County:Wilkes NPDES#: NCO020761
Sub-basin:030701 Receiving Stream: Yadkin River
DAY
BOD
5
9.2
10
15.7
15
19.9
20
22.4
25
24.1
30
25.5
35
27.0
40
28.0
50
29.5
60
30.2
70
31.4
80
33.1
90
34.0
100
34.8
110
35.3
Date Collected: 04/24/90 1030-1030
Collected by: D. Russell
Cary Lab BOD-5: 11.0
Range of Final BOD:34.8-36.1
Test Evaluation: excellent
pH:7.6 Sulfite:1.65 ml/100
Seed: seeded o Sample:97.7
BOD5 Range: 8.69-9.39 # BOD5 Reps:9
DAY
NH3-N
NUTRIENTS
TKN
NOX-N
TOTAL N
0
0.65
1.9
4.80
6.7
5
0.53
1.9
4.80
6.7
10
0.21
1.3
5.80
7.1
15
0.04
0.8
6.20
7.0
20
0.05
1.2
8.80
10.0
25
30
0.02
0.8
6.30
7.1
90
0.02
0.8
6.30
7.1
Comments: Quality Assurance: five dilutions (10 - 50 0)
averaged 33.0 mg/L and ranged from 32.1 to 34.7 mg/L
(110 days).
cc:Central Files
Regional WQ Supervisor