NC0032662_Speculative Limits_19940323

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
Hon. Joseph M. Chandler
Mayor, Town of Claremont
3301 E. Main Street
Claremont, North Carolina 28610
Subject:
March 23, 1994
11. r
�EHNR
Town of Claremont Wastewater Treatment Plant - North
NPDES Permit #: NC0032662 Catawba County
Subbasin: 03-08-32 Receiving Stream: Mull Creek
Dear Mayor Chandler.
Thank you for the opportunity to provide comments on the facility upgrade and expansion from
0.1 MGD to 0.140 MGD and 0.200 MGD for the Town of Claremont - North Wastewater Treatment Plant.
Our current modeling results have determined that the Lyle Creek Basin and its tributaries, which include
Mull Creek, are water quality limited. Our current procedure for facilities planning expansion within this
basin is to assign effluent limits of:
Summer Winter
BOD5 (mg/I): 8.0 16.0
NH3-N (mg/1): 2.0 4.0
Dissolved Oxygen (mg/1): 5.0 5.0
TSS (mg/1): 30 30
Fecal Coliform (#/100 ml): 200 200
pH (SU): 6 - 9 6 - 9
Total Phosphorus (mg/I): monitoring monitoring
Total Nitrogen (mg/1): monitoring monitoring
Total Residual Chlorine (4/1): 28.0 28.0
Cadmium (µg/I): monitoring monitoring
Copper (14/1): monitoring monitoring
Nickel (14/1): monitoring monitoring
Lead (µg/1): monitoring monitoring
Zinc (4/1): monitoring monitoring
@ 0.140 MGD - Quarterly Chronic (Ceriodaphnia) Toxicity Test at 18 % ; January, April, July,
October
@ 0.200 MGD - Quarterly Chronic (Ceriodaphnia) Toxicity Test at 24 % ; January, April, July,
October
Under our current Division of Environmental Management (DEM) procedure, dechlorination and
chlorine limits are recommended for all new or expanding dischargers proposing the use of chlorine for
disinfection. An acceptable level of residual chlorine in your effluent is 28 µg/1 for protection against acute
toxicity. The process of chlorination / dechlorination may allow the facility to comply with the total
residual chlorine limit.
This speculative analysis does require monitoring for metals due to the presence of industrial
components in the wasteflow. Based on the information currently available, no Significant Industrial Users
(SIU's) will be tied -on to the Claremont - North Wastewater Treatment Plant in the near future. Changes of
these metals requirements may be made when a formal wasteload allocation is completed for this facility. If
industrial users are added upon expansion, a new evaluation of the constituents involved in this discharge
would be necessary. As a means of continued assurance that no degradation to the aquatic environment is
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Town of Claremont - North Waste Water Treatment Plant
NC0032662 Catawba County
taking place at the discharge location, the Chronic Toxicity Test previously contained in the permit would
continue with a limit change to 18%, upon expansion to 0.140 MGD or 24% @ 0.200 MGD.
The final NPDES effluent limitations will be determined after a formal permit application has been
submitted to the Division of Environmental Management. If there are any additional questions concerning
this matter, please feel free to contact Jacquelyn Nowell or me at [phone].
erely,
1(1)5_,
•
Donald Safrit,
Assistant Wate
Technical Support Branc
cc: Dave Goodrich
Mooresville Regional Office
Central Files
TSB Files

G. EUGENE SMITHSON ASSOCIATES. INC.
CONSULTING ENGINEERS
February 8, 1994
Ms. Ruth Swanek
N. C. Department of Environment,
Health and Natural Resources
Division of Environmental Management
Instream Assessment Unit
Post Office Box 27687
Raleigh, North Carolina, 27611
Re:
Dear Ms. Swanek:
Proposed Expansion
North WWTP
Claremont, North Carolina
Catawba County
The City of Claremont is planning to expand the North Wastewater
Treatment plant at the current site and discharge point.
We request speculative discharge limits for flows of 0.140 MGD and
0.200 MGD including, but not limited to, BOD, TSS, Amonia-N,
residual chlorine, toxicity dilution factor and 7Q10 stream flow.
Please call me if you have questions.
Very truly yours,
G. EUGENE SMITHSON ASSOCIATES, INC.
a A-1,-e
7-2
A. Miles Champion, Jr., P. E.
AMCJr/apw
231 16TH AVE., N.E. - HICKORY, NORTH CAROLINA 28601 - TEL. [phone] - FAX [phone]

a001L
Request No.:
WASTELOAD ALLOCATION APPROVAL FORM
Facility Name:
NPDES No.:
Type of Waste:
Status:
Receiving Stream:
Classification:
Subbasin:
County:
Regional Office:
Requesfor:
Date of Request:
Qudd:
Cadmium
Cyanide
Mercury
Chromium
(°PP -r
Nicks1
CLAREMONT NORTH WWTP
NCO032882
85% DOMESTIC / 15% INDUSTRIAL
EXISTING
MULL CREEK
030832
CATAWBA
MR0
REOPENER
1/22/90
E14NW
-- EFFLUENT LIMITS
Daily
Max,
15
37
0.09
monitor
meter
mcn§ter
Drainage
Summer
Winter
Average
& MONITORING
Silver (ug/1):
Arsenic (ug/1):
area:
1010:
7Q10
flow:
30Q2:
4.210 sq mi
1.00 cfs
1,60 cfs
5.00 cfs
2.10 cfs
monitor
monitor
---- COMMENTS ----- --- ---- --------
REOPENING THE NPDES PERMIT TO REFLECT THE ABOVE EFFLUENT LINTS AND MONITORING
CHANGES tREC0MMENDED BASED ON BASED ON NEW OR REVISED PRETREATMENT HEADWORK«
INFORMATION. (SEE ATTACHED MEMO),
eecommerR»2
Reviewed
Instn am Asses
Pag.cna; gpervi
,ngICI 1.1
RETURN TO fECHN.CAE SERVI<ES Sy:
Date;
Da

d L.
DIVISION OF ENVIRONMENTAL MANAGEMENT
February 5, 1990
MEMORANDUM
TO: WLA File
FROM: Jackie Nowell
SUBJECT: Reopening permit for CLAREMONT NORTH WWTP
NPDES No. NC0032662
Catawba County
The Technical Support Branch has recently evaluated newly sub-
mitted pretreatment headworks information for the subject facility.
This information on these 307(a) priority pollutants was either not
available when Claremont North WWTP's NPDES permit was last renewed
or the POTW's effluent composition has changed substantially since
permit issuance. After review of this data, it has been determined
that the NPDES permit should be reopened, pursuant to Part III Con-
dition E of the subject permit, for the addition of effluent limits
and/or monitoring requirements for the parameters indicated on the
attached approval form. (In addition, a whole effluent toxicity
limit will now become a condition of the NPDES permit.) Existing
permit limits and/or monitoring requirements not detailed in the
attached approval form should remain unchanged.

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CLAREMONT NORTH WWTP
AMMONIA
7Q10:
NH3 Effl. Conc:
AL (1/1.8 mg/1) :
Upstream NH3 Conc.:
Design Flow:
Predicted NH3 Downstream:
NH3 Limit:
1.0000
32.0000
1000.00
0.0000
0.1000
4294.37
4.294372
7451.612
7.451612
ANALYSIS
cfs
mg/1 (DAILY MAXIMUM)
ug/1
ug/1
MGD
ug/1
mg/1
ug/1
mg/1

CLAREMONT NORTH WWTP
AMMONIA ANALYSIS
7Q10: 1.0000 cfs
NH3 Effl. Conc:
AL (1/1.8 mg/1) :
Upstream NH3 Conc.:
Design Flow:
Predicted NH3 Downstream:
NH3 Limit:
15.0700 mg/1
1000.00 ug/1
0.0000 ug/1
0.1000 MGD
2022.38 ug/1
2.022380 mg/1
7451.612 ug/1
7.451612 mg/1
(MONTHLY AVG . )

s11H TOXICS REVIEW
Facility: CLAREMONT NORTH WWTP
NPDES Permit No.: NC0032662
Status (E, P, or M): E
Permitted Flow: 0.10 mgd
Actual Average Flow: 0.05 mgd
Subbasin: '030832
Receiving Stream: MULL CREEK
Stream Classification: C
7Q10: 1.00 cfs
•IWC, 13.4 %
PRETREATMENT DATA
ACTUAL ACTUAL
or Ind. }
Default ACTUAL Domestic
Standard Acute Removal Allowable Domestic Industrial Total
Pollutant AL Criteria Eff. Load Load Load Load
(ug/l) (ug/l) (t/d) (t/d) (lid) (t/d)
Cadmium
Chromium
Copper
Nickel
Lead
Zinc
Cyanide
Mercury
Silver
Selenium
Arsenic
Phenols
c
J
AL
S
AL
c
S
AL
J
S
2,0
50.0
7.0
88,0
25.0
50,0
5.0
0,012
0.060
5,0
50.0
NA
Bkg
Pollutant Conc.
(ug/1)
Cadmium S
Chromium S
Copper AL
Nickel
Lead • S
J
Zinc AL
Cyanide S
Mercury S
Silver AL
Selenium S
Arsenic S
Phenols S
PERMITTED
Ind.
PERMITTED Domestic
Industrial Total
Load Load
(f/d) (#/d)
1,79 40% 0.02 0,00 0,00 0,00 0.00 0.004
984 50% 0,58 0.00 0.01 0.01 0,00 0.002
9,2 55% 0,09 0,01 0.01 0,02 0.02 0.024
789 32% 0,75 0.01 0.01 0,02 0.00 0.010
34 71% 0.50 0,00 0,01 0.01 0,00 0.002
65 30% 0,41 0.04 0,03 0.06 0,02 0.055
22.0 59% 0.07 0.00 0.00 0,01 0.00 0.004
2,4 86% 0.00 0,00 0,00 0,00 0,00 0,000
1.2 94% 0.01 0,00 0.00 0.00 0.00 0,002
20 0,03
360 40% 0.48 0.00 0.00 0.00 0.00 0,002
Allowable Allowable
Effluent Effluent
Conc. Conc.
CHRONIC ACUTE
(ug/l) (ug/1)
ANALYSIS
Predicted Predicted
on ACTUAL on PERMIT.
Influent Influent
Data Oata
(ug/1) (ug/1)
RESULTS
02/01/90
ver 3,0
EFFLUENT DATA =-=
ACTUAL ACTUAL
Maximum Weekly
Daily Average
Value Value
(ug/l) (ug/l)
3.60
36.00
Monitor / Limit / Special Condition*
Actual Actual
ACTUAL PERMITTED Daily Max. Wk. Avg.
Influent Influent Effluent Effluent
Loading Loading Data Data
14.903 13,338 4.438 5.918 Limit Limit
372,581 7334.772 8.153 2.589 Monitor
52.161 68,704 21.969 26.407 Monitor Monitor
655.742 5879.323 38.563 16,767 Monitor Monitor
186.290 251.715 9.367 1.502 Monitor
372.581 484,653 103.559 94,929 Monitor Monitor
37.258 163.935 5,257 4.246 Limit Limit
0.089 17.884 0.180 0.138 Limit Limit
0.447 9.165 0.459 0.311 Monitor Monitor
37.258 149.032 0.000 0.000
372.581 2682.581 4,586 3.107 Monitor
0.000 0.000 0,000 0.000
Monitor
Monitor
INSTREAH MONITORING
Based on Based on
Actual Actual
Daily Max. Wk. Avg.

Rev, Sec, ///9-a
NPDES PRE`IRENME IT INFORMATION REQUEST DORM
FACILITY NAME: Clar\-14h 64 /Ij ai"ik rrPDFZ No. N000 3 a 6 b
REQUESTER: —la ck ire k) o,,j e l 1 DATE: z / I / 9 D Hnciont: /V) � c�
PERMIT CONDITIONS COVERING PRF:TRFAT WNT
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
Phase I due //_
Phase II due / /
Additional Conditions
(attached)
This facility is currently implementing a pretreatment program.
Please include the following conditions:
Program Implementation
Additional Conditions
(attached)
IE IFICANT INDUSTRIAL USERS'. (SIUs) CONTRIBUTIONS
SIU FLOW - TOTAL:
. COMPOSITION :
%S— MCA
Tr TILE : .
METAL ISHING :
OTHER: Foot/ eroc : O
1S
.MGll
MGD
MGD
MGD
MGD
READMRKS REVIEW
PARAMETER I�Asi �2ou6hf DDAILOAD LBIIAYAcTUAL
cd LE DO 1 S'TICY TP INS/f n
, 003E , mil11 . o 03 o' �wc
Cr ,0/0 , 00
Cu .00b. 0/7
Ni ,07-O pad
Pb .D$3 ,DoZ
Zn — , V3S , o z
CN /012 .00y�
Phenol
Other
00Z1
000 . o00g
o ,00al
RECEIVED:
/ / REVIEWED BY:
% Rijn°}rAc.
.005 .c0_
0/3 S5
,d/3 -3Z
O//
• O XS 3 D
,op/ 57
9y
, 000/2. 2.(0
oo / yo
tfl-Te;;.-/E4,1REIURNED: ..1_11_6))

DIVISION OFF ENVIRONMENTAL MANAGEMENT *ER QUALITY FIELD -LAB FORM (DMI,
COUNTY LG., 1 c„
RIVER BASIN C„q l.t �.
REPORT TO: ARO FROII 611RRO WaRO WIRO
AT BM
Other
Shipped by: Bus
COLLECTOR(S):
WSRO TS'
Courier Staff, Other
)
Estimated BOD Range: 0-5/5-25/25-65/40-130 or 100 plus
Seed: Yes ❑ No ❑ Chlorinated: Yes iJree No ❑
PRIORITY
❑AMBIENT ❑ QA
COMPLIANCE ❑
d
11
CHAIN
OF CUSTODY its
❑ EMERGENCY ❑ ESTUARY
STATION LOCATION:
REMARKS:
SAMPLE TYPE
❑ STREAM
❑ LAKE
EFFLUENT
/l
J
For Lab Use ONLY
Lab Number: , ,
is
Date Received: . / // / Time:
Rec'd by:�////// V 1 From: Bus -Courier -Hand Del
DATA ENTRY BY: 1:r..t. I , CK: I l' i
j : s1,, I
DATE REPORTED: Li I - i,. 1 1
CA1�.nn-yz
V '
,
V•�; 4 I )
T4,4110
Station #
1 C. c q J a 2
7,_•.., (7 (rJ
Date Begin �(yy, _ /,mm//dd)
cn t c ` I V
Time Begin
1 . VBeU
�Date rEnd
• 11 `)
I D �I}
Time End
-.
Depth DM DB DBM
Value Type
A H
L
Composite
T S
B
Sample Type
() G
GNXX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
■
•
•
a
•
•
•
•
i
BOD5 310
mg/I
COD High 340
mg/1
COD Low 335
mg/1
Collform: MF Fecal 31616
/100m1
Collform: MF Total 31504
Collform: Tube Fecal 31615
/100m1
/100m1
Collform: Fecal Strep 31673
/100ml
Residue: Total 500
mg/1
Volatile 505
mg/I
Fixed 510
mg/1
Residue: Suspended 530
mg/1
Volatile 535
mg/1
Fixed 540
mg/I
pH 403
units
Acidity to pH 4.5 436
mg/1
Acidity to pH 8.3 435
Alkalinity to pH 8.3 415
mg/1
mg/I
Alkalinity to pH 4.5 410
mg/I
TOC 680
mg/1
Turbidity 76
NTU
Chloride 940
mg/1
Chl a: Tri 32217
ug/1
Chl a: Corw32209
rn
ugh
Pheophytirfa !32213 �; _ ug/1
Color: Trifle 80 a co ':_- Pi -Co
Color:(pH,4 ;j 83 `•7
Color: pH .6;82; M -- .A,MI
ADMI
Cyanide 720g
U
Fluoride 951
rig/1
Formaldehyde 7%1880
mg/1
Grease and Oils 556
mg/1
Hardness Total 900
mg/1
Specific Cond. 95
uMhos/cm2
MBAS 38260
Phenols 32730
mg/I
ug/I
Sulfate 945
mg/1
Sulfide 745
mg/I
NH3 as N 610
mg/1
TKN as N 625
mg/I
NO2 plus NO3 as N 630
mg/1
P: Total as P 665
mg/I
PO4 as P 70507
mg/1
P: Dissolved as P 666
mg/I
Cd-Cadmium 1027 L p R ug/1
Cr-Chromium:Total 1034 - ug/1
Cu-Copper 1042
NI -Nickel 1067
Pb-Lead 1051
.1p
t)
ug/I
ug/I
ug/1
Zn-Zinc 1092
ug/1
Ag Silver 1077 ud%1
Al -Aluminum 1105
=) f\/1
ug/I
Be -Beryllium 1012
Ca -Calcium 916
Co -Cobalt 1037
XFe -Iron 1045
ug/I
13
mg/1
ug/I
?r1r1
ug/1
Li-Llthlum 1132 ug/1
Mg -Magnesium 927 �} mg/I
yMn-Manganese
1055 IU ug/I
Na-Sodium 929 . mg/I
tP :f1
Arsenic:Total 1002 ug/I
Se -Selenium 1147 ug/I
Hg-Mercury 71900 ug/I
Organochlorinc Pesticides
Organophosphorus Pesticides
Acid Herbicides
B.-.se/ Neutral Extractable Organics
Acid Extractable Organics
Purgeable Organics (VOA bottle reg'd)
Phytoplankton
Sampling Point %
2
Conductance at 25 C
94
Water Temperature (C)
10
D.O. mg/1
300 1•
pH Alkalinity
pH 8.3
400 I• 82244
pH 4.5
431
Acidity
pH 4.5
82243
pH 8.3
82242
Air Temperature (C)
20
Salinity %
480
Preclpition On/day)
45
Cloud Cover %
32
Wind Direction (Deg)
36
Stream Flow Severity
1351
Turbidity Severity
1350
Wind Velocity M/H
35
Mean Stream Depth ft.
64
Stream Width ft.
4
DMI/Revised 10/86