NC0081370_Approval_20010119

NPDES DOCUNENT :MCANNIN` COVER !;c1EET
NC0081370
Claremont / McLin Creek WWTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Approval
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
January 19, 2001
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content on the reYerse side

OFV‘1 A T••i9 Michael F. Easley
QG Govemor
r William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
'C Kerr T. Stevens, Director
Division of Water Quality
January 19, 2001
MR. M. DEAN MCGINNIS
CITY MANAGER
CITY OF CLAREMONT
POST OFFICE BOX 446
CLAREMONT, NORTH CAROLINA 28610
Subject: Short Term Monitoring Plan and Sewer Use Ordnance Modifications,
City of Claremont,
NPDES# NC0081370
Catawba County
Dear Mr. McGinnis: „
The Pretreatment Unit of the Division of Water Quality received copies of the revised Short
Term Monitoring Plan and an amendment to the Sewer Use Ordnance on October 14, 1999.
These documents were misfiled and recently found. We apologize for this mistake.
The review indicates that both the Short Term Monitoring Plan and Sewer Use Ordnance are
adequate and satisfy requirements of 15A NCAC 2H .0900 and 40 CFR 403.
The Division's review process assures that the permit(s), Allocation Table, Headworks Analysis,
(HWA), and other supporting documents, have been properly placed in the Division's files and
that key information is entered and updated in the state's database where they are maintained for
public record.
On January 8, 2001, Mr. Tony Gragg of the Water Tech Company called Keyes McGee of the
Pretreatment Unit Staff to report that some STMP sampling had not been done. This sampling
was unfortunately discontinued during the transition from city operations to contract operations
of the McLin Wastewater Treatment Plant (WWTP) by the Water Tech Company. Your.
approved STMP, calls for quarterly monitoring for all influent and effluent Parameters of
Concern (POCs). During the year preceding the Headworks Analysis (HWA) the sampling
frequency increases to monthly.
The Town of Claremont should immediately resume the STMP monitoring. STMP sampling
must be completed once for the first two quarters of 2001 and increased to monthly starting in
June 2001. This data is necessary for technically based local limits and HWA which is due July
21, 2002. After completion of a good HWA the STMP sampling can revert to quarterly
monitoring.
NC —DEAR, DWQ, PRETREATMENT UNIT
1617 MAIL SERVICE CENTER, RALEIGH, NC 27699-1617
Website: http://h2o.enr.state.nc.us/Pretreatlindes.html
NCDENR
Telephone: [phone] Fax: [phone]
An Equal Opportunity Affirmative Action Employer
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Please submit to the Division by September 1, 2001, a summary of your STMP, DMR, and
sludge data collected to date in preparation for HWA calculations. The data will be reviewed by
the Pretreatment Unit to determine if it is organized properly for use in completing the HWA.
The Pretreatment Unit received today IUP coversheets for Alcatel and Pierre Foods from the
City of Claremont. This submission is appreciated and the corrected pages will be collated into
the filed permits for the public record.
Thank you for your continued cooperation with the Pretreatment Program. If you have any
questions or comments, please contact Keyes McGee at [phone] extension 580 or Tom S.
Poe, Supervisor of the Pretreatment Unit (ext. 522).
Sincerely,
Kerr T. Stevens
_cr
Path: ADSHARE\Claremont\LETTERSI Claremont STMP_SUO 008.doc
cc: Tony Gragg, Pretreatment Coordinator, City of Claremont
John Lesley, MRO
Central Files
TKM, Pretreatment Unit

CITY OF CLAREMONT
P.O. Box 446
3301 EAST MAIN STREET
CLAREMONT, N.C. 28610
828/459-7009 • FAX [phone]
October 8, 1999
Mr. Tom Poe
Division of Water Quality
1625 Mail Service Center
Raleigh, N.C. 27626
Dear Tom:
j/lI3 - srsil°
qL /y_ Sao
Enclosed are copies of the revised Short Term Monitoring Plan and an amendment to our Sewer
Use Ordinance.
We changed the level of mercury from 0.0003 to 0.0002 in Section I Detection Level And
Sampling Method.
Ordinance No. 324-99 changes three sections of our Code of Ordinances governing wastewater
pretreatment.
Please call me at 828-459-7009 if you need additional information.
Cordially,
M.D. McGinnis
City Manager

SHORT TERM MONITORING PLAN
City of Claremont, N.C.
NPDES Permit No. NC0081370
McLin Creek WWTP
June 20, 1996
REVISED
OCTOBER 4, 1999
Prepared by:
Rothrock Engineering
P.O. Box 3236
Hickory, NC 28603
[phone]

A. SAMPLING POINTS (See Figure 1)
1. Influent (prior to mixing with side streams)
2. Effluent
3. Activated Sludge from Aeration Basins
4. Sludge to Disposal
5. SIU No. N001 - WSMP, Inc.
6. SIU No. M002 - Alcatel
B. POLLUTANTS OF CONCERN (POC)
1. NPDES limited and monitored pollutants required.
2. For Land Application 40CFR503 Pollutants - As, Cd, Cr, Cu, Pb, H Mb Ni, Se, Zn, % solids, sludge to disposal flow. g' '
3. EPA Required: Cd, Cr, Cu, Ni, Pb, and Zn.
4. SIU permitted pollutants required with exception of organics.
5. Pollutant exceptions: DO, pH, temperature, conductivity, oil & ease fecal
colliform, aquatic toxicity, and TTO. '
C. DETENTION TIMES
The aeration basin, clarifier and sand filter detention time during typical flow pperiod
hours. Therefore, samples from point 2 will be taken 24 hours aftsamples is t21
taken. from point 1 are
D. FLOW
Flow monitoring points are indicated on the attached facility diagram (see Figure 1
will be monitored during sampling events. Flow #2 will be monitored quarterly.
)' Flow # 1
E. SIU MONITORING
Significant Industrial User (SIU) monitoring will be conducted per SIU permit.
F SEPTAG
Septage is not accepted at this facility.
2

G, SAMPLING FREQUENCY
Sampling Pt.
1 - Influent,
2 - Effluent
3 - Aeration
Basin
4 - Sludge to
Disposal
5 - SIU #N001
WSMP
6 - SILT #M002
First Year
Monthly on
Workday and
per NPDES
requirement
1 per 6 mo.
Per sludge permit
and 503 regs.
Per SIU permit
Per SIU permit
H. SAMPLING PLAN
POC
Flow
BOD
TSS
% Solids
Ammonia-N
As
Cd
Cr
Cu
Cyanide
Floride
Pb
Hg
Mo
Ni
Se
Ag
Zn
Pt. 1 Pt. 2
X
X X
X X
kkkXkXkkkkkkkk
kkXkkkkkkXXkXk
Thereafter
Quarterly on
Workday and
per NPDES
requirement
1 per 6 mo.
per sludge permit
and 503 regs.
Per SIU permit
Per SIU permit
Pt.3 Pt.4
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
3
1 Year Before HWA
Monthly on
Workday and
per NPDES
requirement
1 per 6 mo.
per sludge permit
and 503 regs.
Per SIU permit
Per SIU penult

I. DETECTION LEVEL AND SAMPLING METHOD
POC Detection Level (mg/1) Sample Method
BOD 1.0 24 hr. composite
TSS 0.1 24 hr. composite
Ammonia-N 0.5 24 hr. composite
As 0.01 24 hr. composite
Cd 0.002 24 hr. composite
Cr 0.005 24 hr. composite
Cu 0.01 24 hr. composite
Cyanide 0.01 Grab
Floride 0.2 24 hr. composite
Pb 0.01 24 hr. composite
Hg 0.0002 24 hr. composite
Mo 0.1 24 hr. composite
Ni 0.01 24 hr. composite
Se 0.01 24 hr. composite
Ag 0.005 24 hr. composite
Zn 0.01 24 hr. composite
Sampling, preservation, and analytical methods must be from 40 CFR 136.
Sludge to disposal shall be grab samples.

FIGURE 1 - FACILITY DIAGRAM
MCLIN CREEK WWTP
CLAREMONT, N.C.
NPDES PERMIT NO. NC0081370
SEQUENCING BATCH REACTOR (SBR) / AEROBIC DIGESTOR
Influent
Bar Screen/Grit Removal Pump Station
›-
Tertiary Filter
Chlorine Contact
SAMPLING POINTS
1 - Influent
2 - Effluent
3 - Aeration Basin (SBR)
4 - Sludge to Disposal
Batch Reactors
Flow Metering
Aerobic Digestors
Supernatant
Waste Sludge
>
Dechlorination
5
Cascade Aeration
Sludge Disposal
Stream