NC0020648_Wasteload Allocation_19930831

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit:
NC0020648
Washington WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Correspondence
201 Facilities Plan
Instream Assessment (67B)
Environmental Assessment (EA)
Permit
History
Document Date:
August 31, 1993
This document is printed on reuse paper - ignore any
content on the reverse side

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCO020648
PERM=E NAME: The City of Washington
FACILITY NAME: Washington WWTP
Facility Status: Existing
Permit Status: Modification
Major _q Minor
Pipe No.: 001
Design Capacity: .2,5-ArI6Pl Q. 1,a m6D (I�uPcunswn ahodd nr_-
Domestic (% of Flow): 96.2 % t1 cUlnxd ,F �
pee no(' relx�tfe. (�
Industrial (% of Flow): 3.8 % TCLr Rwer )
Comments:
Plant flow limit is presently 2.12 MGD requesting upgrade of limits
I�ctc� i, h.� relocaf�n5 �ho iar ever yhro �h t�l'I S�„llvl,V�
RECEIVING STREAMtXemedy creek s
Class: C-NSW
Sub -Basin: 03'03-07
Reference USGS Quad: E 30 SE (please attach)
County: Beaufort
Regional Office: Washington Regional Office
Previous Exp. Date: 3/31/95 Treatment Plant Class: IV
Classification changes within three miles:
C-NSW to US 17 Bridge where classification become SC -NSW
(Pamlico River)
Requested
Prepared b
Reviewed
�pC
wa
Modeler
Date Rec.
#
gI I
9s
IS tl
Drainage Area (mil) Avg. Streamflow (cfs):
7Q10 (cfs) 11" Winter 7Q10 (cfs) 30Q2 (cfs)
Toxicity Limits: IWC CL % _ Acu Chronic c - Q07.
Instream Monitoring:
Parameter
Upstream Location Rt)ode. ch5ch . on �� CK.
Downstream y LocatiokKenvulij CL Q mar+h
®P 7W R. P_ 14" l i
Effluent
Characteristics
0?.11;L mc:D&
r ,n
�L IQ
Mb'D
„ e-
BODS (m )
lt5
IPT
ff
10
NH3-N (mg/1)
4
1
I,
D.O. (mg/1)
TSS (mg/1)
3p
3t5
30
3D
F. Col. V100 ml)
21�0
2�0
200
200
pH (SU)
(4 r,
LQ-9
La_Aj
Li.-9
-rp (rr ilP
A-0miv
ffbmbr
fnamtor
rmryfy
a.
2
c5id long a
Codmtorn (A4GQT
YY1om+or
a
mcn,tpr
a
1-7
17
Chvt mium t 1
l)
50
►fWbr
6D
50
O
N c 1
lecd e
1%
B4
zw1c, C 1
rrrm„ +Lv
i, a
Yvon e-
P1 Wtt r
- kc

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0020648
PERM=E NAME: The City of Washington
FACILITY NAME: Washington WWTP
Facility Status: Existing
Permit Status: Modification
Major 11 Minor
Pipe No.: 001
Design Capacity: 2.5 MGD
Domestic (% of Flow):
Industrial (% of Flow):
96.2 %
Comments:
Plant flow limit is presentty 2.12 MGD. requesting uPerade of limits.
i�F �Cl�es�a91 8—� I-q3
I�ct�itij r210CQt�✓14 'f'O IAr I�- VEr l�'1 h �1i'I �j�✓1rlvl�
RECEIVING STREAM: Kemm',?-� 1
Class: C-NSW
Sub -Basin: 03-03-07
Reference USGS Quad: E 30 SE (please attach)
County: Beaufort
Regional Office: Washington Regional Office
Previous Exp. Date: 3/31/95 Treatment Plant Class: IV
Classification changes within three miles:
C-NSW to US 17 Bridge, where classification becomes SC -NSW
(Pamlico River)
Requested by:
3a�w
w�2 \�Q
Dom: 8/11/93
Date: R131IG3
Date: 3(
Modeler Date Rec. #
-jE!A g , 7S8/
Drainage Area (mil ) Avg. Streamflow (cfs):
7Q10 (cfs)'J' (� Winter 7Q10 (cfs) 30Q2 (cfs)
Toxicity Limits:--RY-C C� -% Acu hrome
Instream Monitoring: G-ineideo u i i• inrnrr � dhe�
mal cccrdwt� i'MA11on t16 Clu>;id du ,ccih60 o e
Parameters fmp LCC iri
Upstream `1 Location n
Downstream `I Location] 12, i� Ni.y 7
rvv-fl 1) ,c . / r
Effluent
Characteristics
twmer
W,ri
W
BOD5 (MgM
I-.5
15
l
NH3-N (mg/1)
4
D.O. (mg/1)
-
-
TSS (mg/1)
0
30
3
F. Col. (/100 ml)
200
2b0
2Io
2CO
pH (SU)
19-9
(9-q
(D-qi
(y '
TIP fim51Q
r
T11cniiu4-
tYler„hr
(r)crniN
(Y1(Yi,
fbr
WknLb
rIt (,LT
lead P
(nbrn
t 3mlbr
(Ylcrnhr
a8
0.8
b i
NQ cqul
5aon
ell
Comments:
3/ ]` xlnple
- -1.
n-
7
L
y S
amdctboriJ ©ri 'rP4-TtJ hare. rips Veen irrl A&cl
ne_ "L frirAAA is CIW+IC,iY6nc in 4+-P- NDS
Pt t Owlined 'I✓) qW e_Tar- kA140 tisw
fahon st yC>cted Zxce.mber I� KlSq (i. *-e J
any eknrv-n of i5 bii'a" is rick conipied

WASNINGT RECEIVED OFFICE
FACT SHEET FOR WASTELOAD ALLOCATION
A LII, 19 �3
Request # 7571
i
D E �•
Facility Name:
NPDES No.:
Washington
NCO020648
Type of Waste:
96.6% domestic
Facility Status:
Existing
Permit Status:
Renewal w/mod (expansion & reloc to Tar through Nad
Spinning)
Receiving Stream:
Tar River
Stream Classification:
C-NSW
Subbasin:
030307
County:
Beaufort
Stream Characteristic:
Regional Office:
WaRO
USGS #
Tidal
Requestor:
R. Kepler
Date:
Date of Request:
08/12/93
Drainage Area (=2):
Topo Quad
E30SE
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
WLA based on proposal for National Spinning to reuse Washington's effluent. Any effluent not
used by National Spinning will be discharged to Tar River through National Spinning outfall.
Limits included in this WLA are identical to limits suggested in DEM's 6/11/93 letter to facility.
Effluent monitoring for some metals has been dropped since DMR data lists all values below
detection. Metals will be monitored through Pretreatment Long Term Monitoring Program.
Facility should not be allowed to expand until outfall relocated to Tar River.
Special Schedule Requirements and additional comments from Reviewers:
Recommended by
Reviewed by
Instream Assessment:
Regional Supervisor.
Permits & Engineerin
Saeoi
RETURN TO TECHNICAL SERVICES BY: SFR 1 4 1993

CONVENTIONAL PARAMETERS
Existine Limi
Monthly Average
Summer
Winter
Wasteflow (MGD):
2.12
2.12
BOD5 (mg/1):
15
15
NH3N (mg/1):
4
4
DO (mg/1):
5
5
TSS (mg/1):
30
30
Fecal Col. (/100 ml):
200
200
pH (SU):
6-9
6-9
Residual Chlorine (µgA):
Monitor
Monitor
Oil & Grease (mg/1):
TP (mg/1):
Monitor
Monitor
TN (mg/1):
Monitor
Monitor
Recommended Limits:
"oll rl CC' ICU 12.
Mon}� Average
Summer
Winter
Wasteflow (MGD):
2.12
2.12
BOD5 (mg/1):
15
15
NH3N (mg/1):
4
4
DO (mg/1):
5
5
TSS (mg/1):
30
30
Fecal Col. (/100 nil):
200
200
pH (SU):
6-9
6-9
Residual Chlorine (µg/1):
Monitor
Monitor
Oil & Grease (mg/1):
TP (mg/1):
Monitor
Monitor
TN (mg/l):
Monitor
Monitor
't i1= �:lc,l� do�� rrvf rela'a+e ,� iu�li
Tdr
Doer
t foc 6 --laLP
Summer Winter
WQ/EI.
„ K¢.yyycl.q
2.5
2.5
aiar:,n�aIaWE e )
5
5
io
4
4
WQ
I I,8
5
5
WQ
In tr
30
30
3p 3t>
200
200
pp 3W
28
28
WQrr�#''�
Monitor Monitor
Monitor Monitor
receive! ocklexed t6f:Ca
i'm,Fs. crl shatld �� VaJe i�:�- Aepe- AmJ3 oilbecomk
Limits Changes ue To:
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow X
Other (onsite toxicity study, interaction, etc.)
Instream data
New regulations/standards/procedures
New facility information
Calif •0M1
� a
4e s
hmlfi T-P4 T14
efkzf)tie .
Parameter(s) Affected UA
'r ConUCq:X o I
K. rn, i ief on s163 3
�{,t LNoancecl eFfeehv'e
4m,t3 uxll lxrome
aeiuys ()'filer y2'11n4
ifELA&e( unjen CLY6huC40w
hG5 lxc�0 .
(explanation of any modifications to past modeling analysis including new flows, rates, field data,
interacting discharges)
(See page 4 for miscellaneous and special conditions, if applicable)

3
TOMCS/METALS
Type of Toxicity Test: Acute Quarterly
Existing Limit: Chronic Quarterly at 90% (keep while in Kennedy Ck)
Recommended Limit: Acute Quarterly P/F at 90%
Monitoring Schedule: Feb, May, Aug, Nov
Existing Limits
Daily Max.
COD (mg ):
Cadmium (ug/1):
2
Chromium' (ug/1):
50
Copper (ug/1):
Monitor
Nickel (ug/1):
88
Lead (ug/1):
25
Zinc (ug/1):
Monitor
Cyanide (ug/1):
5
Phenols (ug/1):
Mercury (ug/1):
Silver (ug/1):
Monitor
Limits
Kennedy
Ck Tar River
Flow (MGD):
2.12
2.12 or 2.5
Cadmium (ug/1):
2
(WQ) NL
Chmmium� (ug/1):
50
(WQ) NL
Copper (ug/1):
Monitor
NL
Nickel (ug/1):
88
(WQ) NL
Lead (ug/1):
25
(WQ) Monitor
Zinc (ug/1):
Monitor
Monitor
Cyanide (ug/1):
5
(WQ) NL
Phenols (ug/l):
Mercury (ug/1):
Silver (ug/1):
eft'/L.te`d /rvu/D �� lc�r
Pluee-
p u%rmed /b n7� fCr
Limits Changes Due To: Parameters Affected
Change in '7Q10 data
Change in ,stream classification
Relocation of discharge X All
Change in, wasteflow
New pretreatment information
DMR data' less than detection X Cd, Cr, Ni, CN, Cu, Ag
Other (onsite toxicity study, interaction, etc.) Pb - all municipalities
receive monitoring
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: above discharge on Kennedy Ck ;Grimesland after relocation
Downstream Location: at mouth Kennedy Ck & Hwy 17; Hwy 17 after relocation
Parameters: temperature, DO, conductivity, ammonia, chromium, salinity, fecal coliform
Special instream monitoring locations or monitoring frequencies:
Monitoring after relocation coincides with National Spinning monitoring. Facilities may coordinate
monitoring to avoid duplication of effort.
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
L .�
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?
Special Instructions or Conditions
Limitations on total phosphorus and total nitrogen have not been included at this time because the
facility is particpating in the nonpoint source trading option outlined in the Tar -Pamlico NSW
Implementation Strategy adopted December 14,1989 by the Environmental Management
Commission (EMC). If any element of this strategy is not complied with, the Division reserves the
right to reopen this permit to include nutrient limitations.
Expansion of discharge should not be allowed until facility relocates to Tar River.
Wasteload sent to EPA? (Major) _ (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 (Y or N) If yes, explain with attachments.
6/11/93 letter to facility

Facility Name Permit # kewDoOV Pipe # 001
CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay
Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality
is 'RO % (defined as treatment two in the North Carolina procedure document). The permit holder shall perform
r r monitoring using this procedure to establish compliance with the permit condition. The first test will be
performed after thirty days from the effective date of this permit during the months of
. Effluent sampling for this testing shall be performed at the NPDES
pem-ii&—d-fi—Al effitkfit discharge below all treatment processes.
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 parameter code TGP3B.
Additionally, DEM Form, AT-1 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
l 4401 Reedy Creek Road
Raleigh, N.C. 27607
I'
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.
'I
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 daysl,of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10 O cfs
Permitted Flow a 'i I MGD
IWC /OCR %
Basin & Sub -basin 1Ctr/ '
Receiving Stream T KQ o4e `I Wet,
County ,&CAr A (-6i i-
Recommended by:
P, C. 6wwk
Date 91 1
QCL PIF Version 9191

i
Facility Name Permit # �P49 Pipe # DD I
l
ACUTE TOXICITY PASSWAIL PERMIT,LIMIT LIMIT (QRTRLY)
The permittee shall conduct acute toxicity tests on a basis using protocols. defined in the North Carolina
Procedure Document entitled "Pass/Fail Methodology For Determining Acute Toxicity In A Single Effluent
Concentration.". The monitoring shall be performed as a Fathead Minnow (Pimephales romelas) 24 hour static
test, using effluent collected as a 24 hour composite. The effluent concentration at which there may beat no -'time
significant acute mortality is 90% (defined as treatment two in the North Carolina procedure document). Effluent
samples for self -monitoring purposes must be obtained.during representative, effluent discharge below all Waste.
treatment. The first test will be 7rformed after thirty days , from the effective date of this pemonths of L O V
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 parameter code TGE6C.
Additionally, DEM Form �AT-2 (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 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 immediatelyuntil such time that a single test is passed. Upon passing, this monthly test requirement will
i revert to quarterly n 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 mmediate
retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with{monitoring requirements.
1 Ii
7Q10 it, C�� :I�:: cfs
Permitted Flow ! MGD
IWC.. _
Basin & Sub -basin 'ar0'1
Receiving ream Tar Ue /
County f
QAL P/F Fathead 24 Version 9191
Recommended by:
�au, , C'.
Date A, 5IL73

Facility Name Permit # AVOQW(kfig Pipe #
ACUTE TOXICITY PASSNAIL PERMIT LIMIT (QRTRLY)
The permittee shall conduct acute toxicity tests on a quarter basis using protocols defined in the North Carolina
Procedure Document entitled "Pass/Fail Methodology For Determining Acute Toxicity In A Single Effluent
Concentration." The monitoring shall be performed as a Fathead Minnow (Pimephales romelas 24 hour static
test, using effluent collected as a 24 hour composite. The effluent concentration at which there may be at no' time
significant acute mortality is 90% (defined as treatment two in the North Carolina procedure document). Effluent
samples for self -monitoring purposes must be obtained during representative. effluent discharge below all waste
treatment. The first test will be pert rmed after thirty days from the effective date of this permit , during the
months of
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 parameter code TGE6C.
Additionally, DEM Form)I a AT-2 (original) is to be sent to the following address:
1�
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4.401 Reedy Creek Road
Raleigh, N.C. 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 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-operied and
modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document such as control organism
survival and appropriate environmental controls, shall constitute an invalid test and will require immediate
retesting(within 30 days of initial monitoringun
event). Failure to submit suitable test results will constitute
noncompliance with ;moiutoring requirements.
7Q 10 ] t C a I 11 cfs
Permitted Flow Q!J ! MGD
IWC " . ,
Basin & Sub -basin 0(-
Receiving Stream
County
QAL P/F Fathead 24 Version 9191
Recommended

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