NC0025453_wasteload allocation_19920911

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0025453
PERMITTEE NAME: Town of Clayton
FACILITY NAME: Clayton WWTP
Facility Status: Existing
Permit Status: Renewal
Major
Minor _q
Pipe No.: 001 & 002
Design Capacity: 1.5 MGD
Domestic (% of Flow): 63 %*
Industrial (% of Flow):
Comments:
* from old staff re ort
RECEIVING STREAM: Little Creek
Class: C-NSW
Sub -Basin: 03-04-02
Reference USGS Quad: E25NW
(please attach)
County: Johnston
Regional Office: Raleigh Regional Office
Previous Exp. Date: 7/31/92 Treatment Plant Class: class III
Classification changes within three miles:
Changes to WS I11 at the Neuse River PLOTTED
Requested by: Rapdy kpier Date: 1- 27-92
Prepared by;
Date: Q ` 12 ti
Reviewed by:r
:�: Date: t ( 2
�4b
tf Date Rec. ##
z .3
Drainage Area mil
g ( ) �. 0 Avg. Streamflow (cfs): b • �
7Q10 (cfs) Winter 7Q10 (cfs) 30Q2 (cfs) o .1 q
Toxicity Limits;,-Uwt (10 % Acute/C7c
Instream Monitoring: —J
Parameters Sew "C7�
S a�CM
Upstream Location /7 3
Downstream Location
d n
r16
Effluent 7 - Z C,97
Characteristics Summer Winter
BOD5 (m )
NH3-N (mg/1)
------------
1�
D.O. (mg/1)
TSS (mg/1)
3
F. Col. (/100 ml)
20
2©�
PH (SU)
6 ��
:c
r::=
wt i.�,.An, u
L_
-------
ai p Cw(
eri
qt 2

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THIS MAP COMPLIES WITH NATIONAL MAP ACCURACY STAND,

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A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Final
During the period beginning on the effective date of the Permitand lasting until eiipansion or expiration,
the permittee is authorized to discharge from outfall(s) serial number(s) oo1.
Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Kqlday lbs da Other -Units (Specify) Measurement Sample * -S�le-
Monthl vg. ee y Avg. Monthlyee_ yAAvg. _Muenr �_y�e Locat n
Flow 4r 0.6 MGD Continuous Recording I or E
BOD, 5Day, 20°C ** 10.0 mg/l 15.0 mg/l Daily Composite E,I
Total Suspended Residue ** 30.0 mg/l 45.0 mg/1 Daily Composite E,I
NH3 as N 3.0 mg/l 4.5 mg/l Daily Composite E
Dissolved Oxygen (minimum) 5.0 mg/1 5.0 mg/l Daily Grab E,U,D
Fecal Coliform (geometric mean) 1000.0/100 ml 2000.0/100 ml Daily Grab E,U,D
Residual Chlorine Daily Grab. E
Temperature Daily Grab E,U,D
Total Nitrogen (NO + NO + TKN)
Total Phosphorus 2 3 l�uarterly Composite E
Quarterly Composite E
Toxicity *** *** Quarterly Composite E
I
*Sample locations: E - iffluent, I - Influent, U - Upstream, D - Downstream .
Upstream and downstream samples shall he grab samples.
� � �\ ream samples shall be collected three times per week during June, July,
CO a gust and September and once per week during the remaining months of the
..�n y
n rthl;�d.average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 35% of
$ppctiv!�?Wnfluent values (65% removal) .
!***see,-rtn` I, Condition No. I.
n rn p a
o �
�c�ZZ9 'The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and o
shall be monitored daily at the effluent by grab sample. � x ~
There shall be no discharge of floating solids or visible foam.in other than trace amounts. w 0

A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Final Summer: April 1 - March 31
During the period be innin
gg g expansion and relocation :.and lasting until expiration,
the permittee is authorized to discharge from outfall(s) serial number(s) oo1.
-} Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge -Limitations
Monitoring Re ulrements
K d lbs da Other -Units
ejqL {Specify)Monthlyv�Measurement Sample
ontT ee !Len * S le
Flow °1.5 MGD Lcat
on
BOD, 5Day, 20C
** Continuous Recording I or E
Total Suspended Residue
17.0 mg/l 25.5 mg/l Daily Composite E,I
** 30.0 m /1
NH as N g 45.0 mg/l Daily Composite E,I
7.0 mg/l 10.5 mg/l Daily Composite g
Disolved Oxygen (minim,nn) 6.0 m 1
Fecal Coliform g/ 6.0 mg/l Daily Grab E,U,D
(geometric mean) 1000.0/100 ml 2000.0/100 ml Dail
Residual Chlorine Y Grab E,U,D
Temperature Daily Grab E
Total Nitrogen (NO2 + NO3 + TKN) Daily Grab E,U,D
Total Phosphorus Monthly Composite E
Toxicity Monthly Composite E
*** ***
Priority Pollutants **** **** Quarterly Composite E
Annually E
*Sample locations: E - Effluent, I - Influent, U - Upstream, D - Downstream
Upstream and downstream samples shall be grab samples.
ream samples shall be collected three times per week during June, July,
to
ust and September and once per week during the remaining months of the
<t thlverage effluent BOD and Total Suspended Residue concentrations
�^Ca, 01 the re 'ctive influent values (65% removal). shall not exceed 35%
ti ****o. See Part III, Condition NL. Z a
II, Condition J. o 0 0 C
The, pN shall not be less than 6.0 standard units nor greater than 9.0 standard units and N - r.
shal be monitored daily at the effluent by grab sample. -A
There shall be no discharge of floating solids or visible foam.in other than trace amounts. w . 0

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A. W. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Final winter: November 1 - March 31
During the period begginning9 with_expansioh and relocation. __:and lasting until expirati6n,
the permittee is authorized to discharge from outfall(s)- serial number(s) oo1.
Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations
LVAYJ 1 b s da v Other -Units (Specify)
Monthl v . ee v . MontfiT ee v
q.
Flow 1.5 MGD
BOD, 5Day, 200C ** 30.0 mg/l
Total Suspended Residue ** 30.0 mg/1
NH as N 15.0 mg/l
Dilsolved Oxygen (minimum) 6.0 mg/l
Fecal Coliform (geometric mean) 1000.0/100 ml
Residual Chlorine
Temperature
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
Toxicity ***
Priority Pollutants
****
45.0 mg/l
45.0 mg/1
22.5 mg/l
6.0 mg/1
2000.0/100 ml
****
Monitoring Requirements
Measurement Stele * Sample
reguenc.Y 1 Loci
Continuous
Daily
Daily
Daily
Daily
Daily
Daily
Daily
Monthly
Monthly
Quarterly
Annually
*Sample locations: E - Effluent, I - Influent, U - Upstream, D - Downstream
Recording
Composite
Composite
Composite
Grab
Grab
Grab
Grab
Composite
Composite
Composite
Upstream and downstream samples shall be grab samples.
�12 415 -
6'J, Stream samples shall be collected three times per week during June, July,
\ August and September and once per week during the remaining months of the
,9� year.
e m'i hly average effluent BODS and Total Suspended Residue concentrations shal
�ifthespective influent values (65y removal). 1 not exceed 35X
ee. = III, Condition No. J. ****See Par t III, Condition No. L.
he pHbshall
not
beless
taanth6.efflstandard units nor greater than 9.0 Standard units and
daily t by grab sample.
There shall be no discharge of floating solids or visible foam, in other than trace amounts.
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E, I
E, I
E
E,U,D
E,U,D
E
E,U,D
E
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E
E
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Part III Continued
Permit No. NC0025453
I. Toxicity Testing Requirement
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 *February 1987) or subsequent versions.
The effluent concentration at which there may be no observable
inhibition of reproduction or significant mortality is 82% (defined
as treatment two in the North Carolina procedure document). The
permit holder shall perform quarterly monitoring using this
procedure to establish compliance with the permit condition. The
first test will be performed within thirty days from issuance of
this permit. Effluent sampling for this testing shall be performed
at the NPDES permitted final effluent 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
appropriate parameter code. Additionally, DEM Form AT-1 (original)
is to be sent to the following address:
Technical Services Branch
North Carolina Division of Environmental Management
PO Box 27687
Raleigh, North Carolina 27611-7687
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 must be -measured and reported if employed for disinfection
of the waste s-tream.
Should any test data from this monitoring requirement or tests
performed by tie -North Carolina Division of Environmental
Management indicate potential impacts to the receiving stream, this
permit may be reopened and modified to include alternate monitoring
requirements or limitations.
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. Failure to submit suit
results will constitute a failure of permit conditio
J. Toxicity Testing Requirement
The effluent discharge shall at no time exhibit chro
using test procedures outlined in:

Part III Continued
Permit No. NCO025453
1. The North Carolina Ceriodaphnia chronic effluent bioassay
procedure (North Carolina Chronic -Bioassay Procedure -
Revised *February 1987) or subsequent versions.
The effluent concentration at which there may be no observable
inhibition of reproduction or significant mortality is 92% (defined
as treatment two in the North Carolina procedure document). The
permit holder shall perform quarterly monitoring using this
procedure to establish compliance with the permit condition. The
first test will be performed within thirty days from issuance of
this permit. Effluent sampling for this testing shall be performed
at the NPDES permitted final effluent 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
appropriate parameter code. Additionally, DEM Form AT-1 (original)
is to be sent to the following address:
Technical Services Branch
North Carolina Division of Environmental Management
PO Box 27687
Raleigh, North Carolina 27611-7687
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 must be measured and reported if 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--z-eopened and modified to include alternate monitoring
requirements or limitations.
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. Failure to submit suitable test
results will constitute a failure of permit conditions.
R. Upon completion and operation of the additional wastewater treatment
facilities (1.5 MGD ultimate capacity), the permittee shall abandon
the existing discharge point and discharge approximately et
downstream at the new discharge point. �1 �"�
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Part III Continued
Permit No. NCO025453
L. The permittee shall conduct a test for priority pollutants annually
at the effluent from the treatment plant. The discharge shall be
evaluated for all volatile fractions, acid fractions, base/neutral
fractions, and pesticide fractions listed in Table II of Appendix D.
of 40 CFR Part 122 and all metals, cyanide, and phenols listed in
Table III of Appendix D. of 40 CFR Part 122. The permittee shall
test the effluent for any pollutants listed in Tables IV and V of
Appendix D. of 40 CFR Part 122, if a specific pollutant is believed
to be present in the discharge. In addition to the above testing
requirements, other significant levels of synthetic organic
chemicals must be identified. For the purpose of implementing this
requirement, the largest 10 percent of the GC/MS peaks other than
the priority pollutants shall be identified. All tests shall be
performed in accordance with the EPA Reference Methods listed in 40
CFR Part 136.
r�- m C-
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d?Z 011V /
NPDES PRETREATMENT FORMATION REQUEST FORM
FACILITY NAME: N aF C,�A`(r'D�a W WT NPDES NO. NC00
,
E Ac DATE: ! / 13 /�Z REGION:
,REQUESTER •
PERMIT CONDITIONS COVERING PRETREATMENT
i This facility has no SIUs and should not have pretreatment language.
This facility should and/or is developing a '
P g pretreatment program.
Please include the following conditions:
rProgram Development
' • '1 Phase I due
Phase II due %
Additional Conditions
This facility is c=tly
implerenting a Pretreatment(atached,r
Pleas�,yinclude;,rthe lowing conditions: P .
r f Program Implementation
Additional Conditions
(attached)
SIGNIFICANT INDUSTRIAL USERS' (SIUs) MITTRIBUTIONS
SIU FLOW �
TOTAL: MGD
- COMPOSITION: 'TEXTILE:
METAL FINISHING: MCA
MGD
OTHER:
MGD ,
MGD i
MGD ,
,
i
HEADWORKS REV MV
PASS
' PARAMETER iTHROUGH DAILY IAAD IN LBS/DAY ACTUAL �
ALIDWABLE DCKESTIC PERMITTED
Cr 0.1 y 6 INDUSTRIAL %REMOVAL ,
Cu 0 Q 5 •°TOBk
Ni o,(f o,tn 3 o2y
b � — ° 7 .0 07
o .�5
z.47 ° °Z66 ,00
, Zn � Z b — yy T
CN -— 1115 7 7 '
Phenol d �� ° o y _ 9
Other r3o0 Z9y.t4 52 ►,yS
coo t o� 27,6Z at ,
Ts5 �sb o .�7 '
Z3�l,69 5z11Z.S 411.77 g r
NP13 Sb.Da 66,97 31 -A.
AA O, 9 S o.oz 9
RELIVED: / / / q Z REVIEWED BY: RE
/ / Z �/ �L
TURNED:
,

.t
FOR AGENCY cast
H
STANDARD FORM A --MUNICIPAL
SECTION IQ. INDUSTRIAL WASTE CONTRIBUTION TO MUNICIPAL SYSTEM
Submit a description of each 111a)o► Industrial facility discharging to the murlleit aii system, tiling a "wets sdetldn IV for rich facility dwtsp
lion. Indicate the 4 digit Standard Industrial Classification ISIC) Code for the Industry. lit MNW product Or raw wieterial, "W how lin thrl—
lartd gallons pot pay), and the cnaraCterlstics of the wastewater dbC%Sfgad from tits N101115trlal IacRlty Onto ins muilklpal system. Consult : )Ole
III for standard measures Of ptOduCb Or raw matOfiall. (SW Instructions)
t• Kwor Contributing Facility
(aoe instructions) Miles Inc. /Cutter Biological
Norte 1401a 1 "--
Number& street
City
County
state
Zip Code
!. Primary standard Industrial
Classification Code (sae
instructions)
3. ►nndaal Product or Raw
IlbsaNal (set instructions)
Product
Raw Material
4. Flow Indicate the volume Of water
discharged into the municipal Sys.
IOm In thousand gallons po day
and w other this discharge IS Into?.
mittent Or Continuous.
a. /retleatment Provided indicate if
dratreatmeni is Orovided prior 10
entering trio nrunitipai System
0. CRaraalortaties of wastewater
(I" Instructions)
4016
40/a
"Is
4018
act;
402
403a
4036
Hwy 70 East Box 507 _
Clayton
Johnston _
North Carolina
27520
2831,2833,3841
Until (aw
Quantity Tab#* ill
_soybean - lipid emulsion am unk. thew 1000 lb.
intravenous sets, human
plasma fractions.'alcohol dw unk. i:r 1000 lb.
acetone
250 thousand Wiens Per fey
❑ Intermittent ono 12Centi wousIsom
IDyes 13NO
Parameter
Name BOD COD
TSS
T( F)
P . H.
NH3
D
aren1eler
00310 00340
00530
---
---
0061
70507
Number
value
10 100
20-50
70-90
7.0-7.3
1.0-2.0 1
1.0

The 6A6 system L
13:12 Friday, January 24, 1992
------------------------------ NPDES=NC0025453---------
Variable Sum
PIPE
3.0000000
—TYPE—
0
_FREQ—
260.0000000
MCDL
0.0044619
MCRL
0.0089238
MCUL
0.0249866
MNIL
0.0107086
MPBL
0.0044619
MZNL
0.1115475
MCNL
MHGL
MALL
0.0044619
MASL
MPHENOLL
MFLL
MBODL
22.2621301
MCODL
208.7687883
MTSSL
49.7711509
MTOLUL
MFLOW
0.3263794

5,&�
AUG 1 FACT SHEET FOR WASTELOAD ALLOCATION
DEHNR-P.AL RO
Request # 6713
Facility Name:
Town of Clayton WWTP
NPDES No.:
NCO025453
Type of Waste:
63% Dom; 37% Ind
Facility Status:
Existing
Permit Status:
Renewal
Receiving Stream:
Little Creek
Stream Classification:
C-NSW
Subbasin:
030402
County:
Johnston
Stream Characteristic:
Regional Office:
Raleigh
USGS #
0208777175
Requestor:
Kepler
Date:
6-25-92
Date of Request:
020492
Drainage Area (mi2):
6.01
Topo Quad:
E 25 NW
Summer 7Q10 (cfs):
0.10
Winter 7Q10 (cfs):
0.54
Average Flow (cfs):
6.9
30Q2 (cfs):
0.79
IWC M:
95.88
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
This is a renewal of Clayton's existing facility. TSB is currently working on a set of speculative
limits for expansion to 1.6 MGD and 1.9 MGD, approximately 200 ft downstream from the
current discharge site. Since an unnamed pond exists downstream from the discharge, a
comprehensive set of instream monitoring requirements is recommended
Requirements and additional omments from Reviewers:
W1--_ der, ?
y S w 1 IS C ,u. 2 a 5 S a Q t _r/Z .
Recommended by:Juan C. Mangles Date: 9 f l! a 1
Reviewed by
TSB Instream Assessment:. �. Scu, Date:
Technical Support
Regional Supervisor: e!� Date:9111,fL
Permits & Engineering: - Date:
SEP 0 5 1992
RETURN TO TECHNICAL SERVICES BY:

2
CONVENTIONAL PARAMETERS
Existing Limi
Monthly Average
Summer
Winter
Wasteflow (MGD):
1.5
1.5
BOD5 (mg/1):
17
30
NH3N (mg/1):
7
15
DO (mg/1):
6
6
TSS (mg/1):
30
30
Fecal Col. (/100 ml):
1000
1000
PH (SU):
6-9
6-9
Residual Chlorine (µg/1):
Oil & Grease (mg/1):
TP (mg/1):
Monit.
Monit.
TN (mg/1):
Monit.
Monit.
Recommended Limi
Monthly Average
Summer
Winter
WQ or EL
Wasteflow (MGD):
1.5
1.5
BOD5 (mg/1):
17
30
WQ
NH3N (mg/1):
7
15
WQ
DO (mg/1):
6
6
WQ
TSS (mg/1):
30
30
EL
Fecal Col. (/100 ml):
200
200
EL
PH (SU):
6-9
6-9
EL
Residual Chlorine (µg/l):
Monit.
Monit.
Oil & Grease (mg/1):
TP (mg/1):
2
2
Effective
May 1,
1993)
TN (mg/1):
Monit
Monit.
Limits Changes Due To: Paramete(s) Affected
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 Coliforms, TP
New facility information
(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
Type of Toxicity Test:
Existing Limit:
Recommended Limit:
Monitoring Schedule:
Existing Limits
COD (mg/):
Cadmium (ug/1):
Chromium (ug/1):
Copper (ug/1):
Nickel (ug/1):
Lead (ug/1):
Zinc (ugh):
Cyanide (ug/1):
Phenols (ug/1):
Mercury (ug/1):
Silver (ug/1):
Recommended Limits
COD (mg/):
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):
TOMCSYMETALS
Chronic Pass/Fail (QRTRLY)
Chronic Pass/Fail (QRTRLY)
90%
Mar, Jun, Sep, Dec
Limits Changes Due To:
Change in 7Q10 data
Change in stream classification
Relocation of discharge
Change in wasteflow
New pretreatment information
Daily Max.
Daily Max.
2.1
WQ
52
WQ
Monit.
92
WQ
26
WQ
Monit.
Monit.
Monit.
Failing toxicity test
Other (onsite toxicity study, interaction, etc.)
1/
WQ or EL
Parameters) Affected
Cd,Cr,Cu,Ni,Pb,Zn,Cy,
Ag
_7_ 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.
•9
No parameters are water quality limited, but this discharge may affect future allocations.

4
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?
Special Instructions or Conditions
Wasteload sent to EPA? (Major) _1V (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.
Instream Monitoring Requirements

INSTREAM MONITORING REQUIREMENTS
INSTREAM MONITORING
PARAMETERS
UPSTREAM
SITE
DOWNSTREAM
SITE 1
DOWNSTREAM
SITE 2
DO
WEEKLY
WEEKLY
WEEKLY
TEMPERATURE
WEEKLY
WEEKLY
WEEKLY'
CONDUCTIVITY
WEEKLY
WEEKLY
WEEKLY
PH
WEEKLY
WEEKLY
WEEKLY
FECAL COLIFORM
WEEKLY
WEEKLY
WEEKLY
TOTAL PHOSPHORUS
2/MONTH
2/MONTH
2/MONTH
PO4
2/MONTH
2/MONTH
2/MONTH
TKN, TN, NH3-N
2/MONTH
2/MONTH
2/MONTH
CHLOROPHYLL A
2/MONTH
2/MONTH
2/MONTH
UPSTREAM LOCATION: AT NC 42
DowNsrREAM LOCATIONS:
SITE 1: AT NCSR 1560
SITE 2: IN THE POND BELOW NCSR 1560 (AT THE DAMS CREST)
INSTREAM MONITORING (EXCEPT TOTAL PHOSPHORUS, PO4, TKN, TN, NH3-N & CHLOROPHYLL A) IS TO BE
SAMPLED 3/WEEK DURING JUNE, JULY, AUGUST & SEPTEMBER 1 AAA wtik.11 $dt a tk'r Msnfks
THESE PARAMETERS, AT THIS STATION SHOULD BE SAMPLED BEFORE 8+MLAM `I ^ TV^ Mj c A' �)
TOTAL PHOSPHORUS, PO4, TKN, TN, NH3-N & CHLOROPHYLL A PARAMETERS ARE TO BE SAMPLED 2/MONTH
DURING JUNE, JULY, AUGUST & SEPTEMBER ONLY

Permit # 19 C o02S4 s3 Pipe #
Facility Name � � w K � 0 o
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 qO % (defined as treatment two in the North Carolina procedure document). The permit holder shall perform
quarter 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
R " - S Of C_ . Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent 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- I (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 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 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
.�etesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10 0.1
cfs
Permitted Flow t• J
MGD
IWC q 6
%
Basin & Sub -basin o 3 0 `t o 'z
Receiving SM i
e C- c
County 4
%A
Recommended by:
Date 0
%( C (q 'L.
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08/05/92
ver 3.1
T O X I C
S R E V
I E W
'
Facility:
Clayton WWTP
NPDES Permit No.:
NCO025453
Status
(E, P, or M) :
E
Permitted Flow:
1.5
mgd
Actual Average Flow:
0.8
mgd
Subbasin:
030402
Receiving Stream:
Little Creek
I--------- PRETREATMENT DATA -------------- I
---- EFLLUENT DATA---- 1
Stream Classification:
C
I
ACTUAL
PERMITTEDI
I
7Q10:
0.1
cfs
I
Ind. +
Ind. + I
FREQUENCY I
IWC:
95.88
%
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 Conc.
I Eff.
Load
Load
Load
Load
Load I
Conc.
Violationsl
(ug/1) (ug/1)
I %
(#/d)
(#/d)
(#/d)
(#/d)
(#/d) I
(ug/1)
(#vio/#sam)I
---------
Cadmium
--
S
----------------
2.0
I --------
I 9291
--------
0.0000
--------
0.0044
--------
0.00
---------
0.0834
-------- I
0.083 I
--------
--------- I
I
Chromium
S
50.0
1 76%
0.0000
0.0089
0.01
0.6255
0.626 I
I I
Copper
AL
7.0
1 82%
0.1100
0.0249
0.13
0.1043
0.214 I
I N
Nickel
S
88.0
I 32%
0.0000
0.0107
0.01
0.4170
0.417 I
I P
Lead
S
25.0
I 81%
0.0000
0.0044
0.00
0.6260
0.626 I
1 U
zinc
AL
50.0
I 7796
0.2000
0.1115
0.31
0.2090
0.409 I
I T
Cyanide
S
5.0
I 59%
0.0000
0.0044
0.00
I
I
Mercury
S
0.012
I 0%
I
I S
Silver
At
0.06
I 94%
0.0200
0.2085
0.229 I
I E
Selenium
S
5.00
i 096
I
I C
Arsenic
S
50.00
I 0%
I
I T
Phenols
S
NA
I 0%
I
I I
NH3-N
C
I 0%
I
1 0
T.R.Chlor.AL
17.0
I 0%
I
I
I
I N
i
---------------
I
I
ALLOWABLE
PRDCT'D
PRDCT'D
PRDCT'D---------
I
I
MONITOR/LIMIT ---------
I
I
1--ADTN'L RECMMDTN'S-- I
1
Effluent
Effluent
Effluent
Instream
I Recomm'd I
Conc.
using
using
Conc.
Based on
Based on
Based on
I FREQUENCY INSTREAM I
1 Allowable
CHRONIC
ACTUAL
PERMIT
using
ACTUAL
PERMITTED
OBSERVED
I Eff. Mon. Monitor. l
Pollutant
I Load
Criteria
Influent
Influent
OBSERVED
Influent
Influent
Effluent
I based on Recomm'd ? I
I (#/d)
(ug/1)
(ug/1)
(ug/1)
--------
(ug/1)
--------
Loading
--------
Loading
--------
Data
---------I
I OBSERVED (YES/NO) I
----------------- I
---------
Cadmium
--
S
I---------
I 0.18
-----------------
2.086
0.053
1.000
0.00
Monitor
Limit
I I A
Chromium
S
I 1.50
52.151
0.320
22.503
0.00
Limit
I I N
Copper
AL
I 0.28
7.301
3.640
5.782
0.00
Monitor
Monitor
I I A
Nickel
S
1 0.93
91.785
1.091
42.506
0.00
Monitor
Limit
I I L
Lead
S
I 0.95
26.075
0.125
17.829
0.00
Limit
I I Y
zinc
AL
I 1.57
52.151
10.740
14.101
0.00
Monitor
Monitor
I I S
Cyanide
S
I 0.09
5.215
0.270
0.000
0.00
Monitor
I I I
Mercury
S
I 0.00
0.013
0.000
0.000
0.00
I I S
Silver
AL
I 0.01
0.063
0.000
2.055
0.00
Monitor
I I
Selenium
S
1 0.04
5.215
0.000
0.000
0.00
i I R
Arsenic
S
I 0.36
52.151
0.000
0.000
0.00
I I E
Phenols
S
i
0.000
0.000
0.000
0.00
I I S
NH3-N
C
I
0.000
0.00
I I U
T.R.Chlor.AL
I
17.731
0.00
I I L
I
I I T
I
I
I
I I S
I

State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27604
James G. Martin, Governor A. Preston Howard, Jr., P.E.
,William W. Cobey, Jr., Secretary Acting Director
August 18, 1992
Regional Offices
Asheville
Mr. Robert C. Hyatt, Town Manager
704/251-6208
Town of Clayton
P. O. Box 879
Fayetteville
Clayton, North Carolina 27520
919/486-1541
SUBJECT: Town of Clayton
Mooresville
Wastewater Facilities
704/663-1699
In -Progress Plan Review
Conference
Raleigh
Project No. CS370431-03
919/571-4700
Dear Mr. Hyatt:
Washington
919/946-6481
This is to advise of the State requirement that final plans,
specifications and supporting design data must be'submitted for State
Wilmington
review and approval, before State loan funding can be approved for the
919/395-3900
subject project. In accordance with the established schedules, the
complete/final plans and specifications should be submitted by May 1,
Winston-Salem
1993 in order to be reviewed and approved in time to meet the Binding
919/896-7007
Commitment Date of Ju• 1y 31, 1993. If the Binding Commitment Date is
not met, the loan funding will be withheld.
A review of the plans, specifications, supporting documents and
checklist (see below) in conference with the Town of Clayton's
authorized representative and the Consultant Engineer -at the 10% and
500 level of completion is required. The 10% In -Progress Plan review
conference should be held in October or early November, 1992.
Therefore, when the detailed project design with preliminary plans and
specifications is initiated, you or your engineer must advise us of the
time and date chosen for the 100 "In -Progress" plan review conference.
The attendance of the Town's authorized representative at the 10%
In -Progress conference is required; and the conference is not to be
scheduled until this person can be present.
Attached is the "In -Progress Review Checklist" which includes
review items to be discussed in our 10% and 50% conferences with you
and the consulting engineer. You and your consultant engineer should
review this prior to our conference, so that any questions can be
resolved; or any needed clarification/information can be provided
during this conference.
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
e .. n.. _1 i _ .._:.__ a sc -- ' - ' -- - . ,- ,

Page 2
Three (3) sets of the initial plan details and complete design
basis are to be submitted at the 10% review conference; and for the 50%
review conference, three (3) sets of the plans/specifications, final
design basis and an up -dated cost estimate are to be presented.
The 10% and 50% In -Progress Reviews of the plan documents are
required in order to obtain the following:
1. Every effort must be taken to prevent bid overruns, since a
project is not to receive loan funding in excess of that
established on the priority list for the project. It is the
Recipient's sole responsibility to see that the project is
designed in such a manner as to stay within the established
funding limit. If bids exceed the loan amount, the Recipient
must pay the additional amount; or redesign and rebid the
project to get within the funded amount. If a JOC/SOC
schedule is involved and is not extendable, then Recipient
must proceed with award of bid(s) or be subject to the fine
amount stipulated in order; and possible loss of loan funds.
2. A timely submittal of final plans, specifications and
supporting documents which are final and complete in all
respects, including:
a. In complete compliance with Loan conditions, the 201
Facilities Plan, and any contingencies imposed on the
design by the environmental review.
b. Compliance with EPA and State regulatory requirements.
3. Clear, precise and complete plan documents for the
Biddability/Constructibility review, for which a review
period or thirty (30) days.is required.
4. Prompt resolution of other Agency review comments which could
result in lengthy delays in plan processing and approval.
5. Mutual understanding and effort by all parties to coordinate
and maintain processing of project plan documents to meet
target dates designated for State funding.
If a new or revised NPDES Permit is required for the subject
facilities, it is imperative that you take this action immediately by
making application to Mr. Arthur Mouberry, Regional Supervisor,
Division of Environmental Management, Raleigh Regional Office. Your
Project plans cannot be approved until a Permit has been issued.
Please note that the processing and issuance of a Permit will
normally take six (6) months, but can take as much as nine (9) months.

Page 3
The Recipient and consultant engineer must adhere to the schedules
for obtaining the NPDES Permit, complying with JOC/SOC and submission
of final plans and specifications in order that all other established
schedules can be met. If the Binding Commitment date is not met, the
Loan funding will be withheld.
If there are any questions concerning this matter, please do not
hesitate to contact Mr. Robert Teulings, the State Project Review
Engineer, at [phone], extension 610.
Sincerely,
W. S. Hoffman, Supervisor
Construction Grants & Loans Section
Design Management Unit
Attachment
RPT:vk
cc: McKim & Creed - Raleigh
Raleigh Regional Office
Mr. John R. Blowe
Mr. Coy Batten
Mr. Allen Wahab
Mr. Joe Martin
Mr. Tom Fahnestock
Mr. Dale Overcash
Mr. Donald Safrit
Ms. Ruth Swanek
Mr. Robert Teulings
DMU
SRF

MEMO�1
DATE:
TO: SUBJECT: (Ylli: I i'1l'lafz�n
-1-k)n, eve ;T v- : M& LIA CICL jft>, oh�ctal- can 5hq -rhe- -6wvi 'is
parnMed for 1,5 rn&D d- Cuvren&j C J- nn6Dtt`�. Wet waafher, 0+ 1.1 rM
M*k^- ; VIPOW am Camille&). Howeuer, d'iave: CzpccafeCf Q5011W0
( PD 1,u uOLdnj Q, n-r-,Lj a1w cdd u C.hcc15. `i "D(e ,
capac t 1% U)► I I be. 8on e L;, yews.
sown (x� c,)ncevn(-d 4�,�,t{ a �G►�n ;:
LJM,6 U-')0u.1d c ty'n8 . C(� m► renec al - we t ��urrn�� Tc
4j-►i 5%lcja oni j addra!)ad uxx C4
mud- l t wl re M14n -Ant erne- r
51-0100 leer U4,djCaW 4W-jf uev� nn �F lrrrrtf.� �
u{td bo-
re red Fir r►�,c�ll w
r sQ-on C51 � paCbible .5 in 116n ).
ere- eeYlI � a� cowed +�,�p C►terrev,! I4►mi�� (t� J7
-tu avo►d ►yr,3or mec[RcLa u-j3 -ta PlC Tedder 4kem
w,- could elc k-,L c� Flab eL+rncfe,> L N ,re ft�icl
JL r, f-rD lco
From: RAL
North Carolina Department of Environment,
Health and Natural Resources
� Printed on recycled raper
Ounr•

rNr47rt_1'1"t1
�;
State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street - Raleigh, North Carolina 27604
James G. Martin, Governor
William W. Cobey, Jr., Secretary
Regional Offices
Asheville
704/251-6208
Fayetteville
Mr. Robert Hyatt
919/486-1541
Town Manager
Town of Clayton
Mooresville
P.O. Box 879
704/663-1699
Clayton, North Carolina 27520
Raleigh
919/571-4700
Washington
919/946-6481
George T. Everett, Ph.D
Director
May 8, 1992
Subject: Speculative NPDES Permit Limitations
Town of Clayton WWTP
NPDES Permit No. NCO025453
Johnston County
Wilmington Dear Mr. Hyatt:
919/395-3900
The North Carolina Division of Environmental Management (DEM) is in receipt of
Winston-Salem your letter dated February 21, 1992, requesting speculative NPDES permit limitations for
919/896-7007 proposed expansions of the subject WWTP to 1.6 MGD and 1.95 MGD. This letter is to confirm
the preliminary findings presented to you by telephone on March 31, 1992 by Mr. Trevor
Clements of my staff.
The Town of Clayton WWTP currently discharges into Little Creek which is
characterized at the discharge site by the following streamflow statistics: S7Q10 = 0 cfs, W7Q10
= 0.25 cfs, 30Q2 = 0.49 cfs and QA = 6.9 cfs. The headwaters of a pond are located
approximately 2.5 miles downstream from the WWTP discharge. The pond has a surface area of
approximately 13.0 acres.
Since the subject facility discharges into a stream with a 7Q10=O cfs and a 30Q2 >0 cfs,
the Town of Clayton will be required to meet, upon expansion, the following summer (winter)
oxygen consuming effluent limitations: BOD5 = 5(10) mg/l, and DO = 6 mg/l as per NCAC
Title 15, Subchapter 213, Section .0206 (d) (1). Also, based on current Division procedures, a
summer (winter) 1(1.8) mg/1 NH3-N limitation will be required to protect the stream from
ammonia toxicity. In addition, a Total Residual Chlorine limitation of 17 ug/1 will be required.
These limits would not change if industrial wastewater were added.
As discussed in our letter dated September 27, 1991, it has been DEM's experience that -
the discharge of nutrient -laden wastewater in the headwaters of a lake or pond contributes to
excessive algal growth in the receiving impoundment In 1990, DEM conducted a study which
indicated nutrient enrichment in the receiving pond and a high probability of more severe algal
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal f.?pp iia,Slity Affirmative Action Employer

Mr. Robert Hyatt
Page Two
growth under chemical and physical factors which stimulate algal growth. The study concluded that
these chemical and physical factors are present in the pond during the summer months. This algal growth
is associated with eutrophic conditions which impair the best usage of the waterbody as defined by 15
NCAC 2B .0101 (c). �/
Therefore, based on 15 NCAC 2B .0211 (b) (3) (A), a summer 0.5 m total phosphorus gll P sP (TP)
limitation will be required upon expansion. However, our calculations'indicate that the 0.5 mg/1 TP
limitation will exceed our current 0.1 mg/l TP target in the pond. In light of this, the comprehensive
instream monitoring requirements outlined to you in our September 27, 1991 letter will be included in the
NPDFS permit. The data will be used by DEM to assess the impact of the discharge in the receiving
waters and to determine whether additional expansions will be allowed in the future, or whether further
TP limitations are necessary.
Current DEM procedures require that facility expansions which result in an instream waste
concentration (IWC) greater than 33% include an Environmental Analysis (EA) as part of the NPDES
application process. Since the IWC of the subject facility is 100%, the Town of Clayton will be asked to
comply with this requirement prior to processing the NPDES application. The EA should evaluate all
discharge alternatives including, but not limited to, non -discharge disposal systems, connection to the
City of Raleigh, connection to a regional plant and advanced tertiary limitations (i.e. described above) at
its existing discharge location. The EA should note that future expansions at the current site may not be
allowed based on the response of the pond to the increased loading. Relocation of the discharge
downstream from the pond has been suggested in the past by this office; however, current information
indicates the presence of a second pond approximately 2.0 miles downstream from the first pond below
the discharge. Therefore, any consideration for relocation of the outfall should be directed to larger, free
flowing waters. For your information, new or expanding direct discharges to the Neuse River are also
receiving BODS and NH3-N limits of 5 mg/1 and 2 mg/1 respectively.
A cost evaluation should be included in the analysis to determine the most environmentally
sound of the economically feasible alternatives. The evaluation of alternatives should be conducted in
accordance with DEM guidelines. I recommend that you contact Mr. Don Safrit of my staff for guidance
on the evaluation of alternatives.
If you need additional clarification on this matter, please contact Mr. Trevor Clements or Mr.
Juan C. Mangles at [phone].
4tev�eW. cerely,
G� '
Tedder
Water Quality Section Chief
SWT/JCM
cc: Don Safrit1
Tim Donnelly
Central Files
W1 A Files

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V1���� ( (,� - S - �(� iuw �'lou� e:��rr es cd► nc c Qtrl
MEMO
DATE: _ *,1 t jzv I
Z
TO: ASjO
t SUBJECT:uUiT�F'?
eye-i� 7-X)n 4- z rnet wl C.lczs� on 511c1. +cxwn le.�2c fiel
Ct PlaA,� ft) 6P- Lz,- & --�D CfoL-"-3
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y y y. y ./•. y. y. y y i•. y i• . as y y y y fy y• y y y y y. y. y y y y• yl • i• +• +• • y! y y. ys y y y y y •y y. y i• i•
DIVISION OF ENVIRONMENTAL MANAGEMENT
RALEIGH REGIONAL OFFICE
MARCH 20, 1992
........ . ........ . .......... .....................
RECEIVED
M E M O R A N D U M
MAR 241"2
TECHNICAL SUPPORT BRANCH
TO Trevor Clements, Supervisor
Technical Support Branch
THROUGH Arthur Mouberry, P.E.ke
Regional Supervisor
FROM Timothy L. Donnelly, P.E.
Regional Water Quality Supervisor
SUBJECT Speculative Discharge Limits
Town of Clayton
NPDES Permit No. NCO025453
Johnston County
As per the attached letter, please provide
speculative limits for the subject facility so that the
Town can make cost effective planning decisions.
AM:TLD:bas
Attachment

TOWN OF CL"TON
P.O. BOX 879
CLAYTON, NORTH CAROLINA 27520
[phone]
+ DOUGLASMcCORMAC
, ua
ROBERT HYATT Mayor a`
Town Manager Councilmen:
JOHN W. LEE, Mayor Pro Tem
GARY RAGLAND GEORGE D. DALY, JR.
Town Attorney ROYE.GREEN zA CA,'
JESSICA COUTU, CIVICHUGH A. PAGE
P. DEAN STRICKLAND, O.D. FAX [phone]
Town Clerk
February 211, 1992
Mr. Steve Tedder, Manager
Water Quality Branch
Division of Environmental Management
N.C. Department of Environment, Health,
and Natural Resources
P. O. Box 27687
Raleigh, NC 27611-7687
RE: Effluent Limits for Clayton
Wastewater Treatment Plant
Dear Mr. Tedder:
WATER QUALITY
SECTION
The Clayton Town Council is currently investigating the
feasibility of completing a relatively minor expansion of the
wastewater treatment plant. Our 1.5 mgd facility discharges into
Little Creek southwest of Clayton, and the NPDES permit summer
limits are currently 17/7/2.
We would kindly appreciate DEM providing tentative limits
for discharging into Little Creek at the present location for
flows of 1.6 mgd and 1.95 mgd.
Your timely response will be very much appreciated.
Sincerely,
Robert Hyatt
Town Manager
RH:ty
cc: Timothy G. Broome, P.E.
Arthur Mouberry, P.E.