NC0039594_Permit (Issuance)_20060214

NPDES DOCUMENT SCANNING COVER SHEET
NC0039594
Maiden WWTP
NPDES Permit:
Document Type:
ermit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
February 14, 2006
This document is prIzited on reuse paper - igizare airy
content on the reYerse *side

Mr. Michael Lingerfelt
WWTP Superintendent
P.O. Box 125
Maiden, North Carolina
Dear Mr. Nunez:
28650
Michael F. Easley, Governor
State of North Carolina
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
February 14, 2006
Subject: Issuance of NPDES Permit
NC0039594
Maiden WWTP
Catawba County
Division personnel have reviewed and approved your application for renewal of the subject
permit. Accordingly, we are forwarding the attached NPDES discharge permit. This permit is issued
pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of
Agreement between North Carolina and the U.S. Environmental Protection Agency dated May 9,1994 (or
as subsequently amended).
This final permit contains no significant changes from the draft you were sent on December 7, 2005.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty
(30) days following receipt of this letter. This request must be in the form of a written petition,
conforming to Chapter 150B of the North Carolina General Statutes, and filed with the Office of
Administrative Hearings (6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless such
demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division
may require modification or revocation and reissuance of the permit. This permit does not affect the
legal requirements to obtain other permits which may be required by the Division of Water Quality or
permits required by the Division of Land Resources, the Coastal Area Management Act or any other
Federal or Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Toya Fields at telephone
number [phone], extension 551.
Sincerely,
Alan W. Klimek, P.E.
cc: Central Files
Asheville Regional Office/Surface Water Protection
NPDES Unit
Aquatic Toxicology
Marshall Hyatt, EPA Region IV
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
512 N. Salisbury Street, Raleigh, North Carolina 27604 On the Internet at http://h2o.enr.state.nc.us/
An Equal opportunity/Affirmative Action Employer
NorthCarolina
JVaiurallj

Permit # NC0039594
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
Town of Maiden
is hereby authorized to discharge wastewater from a facility located at
Town of Maiden WWTP
Finger Street
Maiden, North Carolina
Catawba County
to receiving waters designated as Clark Creek in the Catawba River Basin in accordance with effluent
limitations, monitoring requirements, and other conditions set forth in Parts I, II, III, and IV hereof.
The permit shall become effective March 1, 2006.
This permit and the authorization to discharge shall expire at midnight on July 31, 2010.
Signed this day February 14, 2006.
W. Klimek, P.E., Director
vision of Water Quality
y Authority of the Environmental Management Commission

Permit # NC0039594
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked. As of this permit
issuance, any previously issued permit bearing this number is no longer effective. Therefore, the exclusive authority to operate
and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included herein.
Town of Maiden is hereby authorized to:
1. Continue to operate an existing 1.0 MGD wastewater treatment facility located at Finger Street,
Maiden, Catawba County, and consisting of the following components:
• Influent pumps
• Mechanical screening
• Grit removal
• Instrumented flow measurement
• Dual 0.5 MGD activated sludge treatment units utilizing pure oxygen, each containing
diffused aeration, clarification, chlorine gas disinfection, and aerobic sludge digestion
• Sludge drying beds
• Stand-by power.
2. Discharge from said treatment works (via Outfall 001) into Clark Creek, a Class C water in the
Catawba River Basin, at the location specified on the attached map.

Maiden WWTP
— NC0039594
USGS Quad Name: Maiden
Receiving Strewn: Clark Creek
Stream Class: C
Subbasin: Catawba — 03 08 35
Lat.: 35°34'35"
Long.: 81°14'26"
Facility
Location
Not to SCALE

Permit # NC0039594
A(1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized to discharge treated
wastewater from Outfall 001. Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS `'
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Max
Measurement
Frequency
Sample Type
Sample
Location'
Flow
1.0 MGD
Continuous
Recording
I or E
BOD, 5-day, 20°C 2
30.0 mg/1
45.0 mg/I
3/Week
Composite
E,I
Total Suspended
Solids2
30.0 mg/1
45.0 mg/1
3/Week
Composite
E,I
NH3 as N
3/Week
Composite
E
Total Residual
Chlorine3
28.0 pg/L
3/Week
Grab
E
Fecal Coliform
(geom. mean)
200/100 rill
400/100 ml
3/Week
Grab
E
pH
6 0 < pH < 9.0
3/Week
Grab
E
Temperature
Daily
Grab
E
Total Nitrogen
(NO2+NO3+TKN)
Monthly
Composite
E
Total Phosphorus
Monthly
Composite
E
Chronic Toxicity4
Quarterly
Composite
E
Total Cyanides
22 ug/1
Weekly
Grab
E
Total Copper
Monthly
Composite
E
Total Silver
Monthly
Composite
E
Total Zinc
Monthly
Composite
E
Temperature
Weekly
Grab
U, D
Dissolved Oxygen
Weekly
Grab
U, D
Conductivity
Weekly
Grab
U, D
Priority Pollutant Scan6
Annual
Grab
E
Notes:
1. Sample locations: E- Effluent, I- Influent, U- Upstream 100-feet above outfall, D- Downstream at NCSR 1282.
2. The monthly average effluent BOD5 and TSS concentrations shall not exceed 15% of the respective influent value (85%
removal).
3. The TRC limit will take effect September 1, 2007. Limit and monitoring requirement only apply if chlorine is used for
disinfection.
4. Chronic Toxicity (Ceriodaphnia) at 11%; January, April, July, and October; refer to Special Condition A(2).
5. The quantitation level for cyanide shall be 10 ug/L. CN levels reported as less that 10 pg/L shall be considered zero for
compliance purposes.
6. See special condition A(3).
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit # NC0039594
SUPPLEMENT TO EFFLUENT LIMITATIONS
AND MONITORING REQUIREMENTS •
SPECIAL CONDITIONS
A (2). CHRONIC TOXICITY PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia
dubia at an effluent concentration of 11.0%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North Carolina
Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent versions or "North Carolina Phase II
Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions. The tests will be performed
during the months of January, April,. July, and October. Effluent sampling for this testing shall be performed at the NPDES
permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the permit limit, then
multiple -concentration testing shall be performed at a minimum, in each of the two following months as described in "North
Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the highest concentration
having no detectable impairment of reproduction or survival and the lowest concentration that does have a detectable
impairment of reproduction or survival. The definition of "detectable impairment," collection methods, exposure regimes, and
further statistical methods are specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge Monitoring Form
(MR-1) for the months in which tests were performed, using the parameter code TGP3B for the pass/fail results and THP3B
for the Chronic Value. Additionally, DWQ Form AT-3 (original) is to be sent to the following address:
Attention: Environmental Sciences Section
North Carolina Division of Water Quality
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sdences Branch no later than 30 days after the
end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all concentration/response
data, and be certified by laboratory supervisor and ORC or approved designate signature.
Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of
the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the permittee
will complete the information located at the top of the aquatic toxicity (AT) test form indicating the facility name, permit
number, pipe number, county, and the month/year of the report with the notation of "No Flow" in the comment area of the
form. The report shall be submitted to the Environmental Sciences Branch at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be required
during the following month. Should any test data from this monitoring requirement or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened and modified to
indude alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism survival,
minimum control organism reproduction, and appropriate environmental controls, shall constitute an invalid test and will
require immediate follow-up testing to be completed no later than the last day of the month following the month of the initial
monitoring.

Permit # NC0039594
A. (3) EFFLUENT POLLUTANT SCAN
The permittee shall perform an annual Effluent Pollutant Scan for all parameters listed in the table below (in accordance with 40
CFR Part 136). The annual effluent pollutant scan samples shall represent seasonal (summer, winter, fall, spring) variations over
the 5-year permit cycle. Unless otherwise indicated, metals shall be analyzed as "total recoverable." Additionally, the method
detection level and the minimum level shall be the most sensitive as provided by the appropriate analytical procedure.
Ammonia (as N)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate/Nitrite
Total Kjeldahl nitrogen
Oil and grease
Total Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile organic compounds:
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethylvinyl ether
Chloroform
Dichlorobromomethane
1,1-dichloroethane
1,2-dichloroethane
Trans-1,2-dichloroethylene
1,1-dichloroethylene
1,2-dichloropropane
1,3-dichloropropylene
Ethylbenzene
Methyl bromide
Methyl chloride
Methylene chloride
1,1,2,2-tetrachloroethane
Tetrachloroethylene
Toluene
1,1,1-trichloroethane
1,1,2-trichloroethane
Trichloroethylene
Vinyl chloride
Acid -extractable compounds:
P-chloro-m-cresol
2-chlorophenol
2,4-dichlorophenol
2,4-dimethylphenol
4,6-dinitro-o-cresol
2,4-dinitrophenol
2-nitrophenol
4-nitrophenol
Pentachlorophenol
Phenol
2,4,6-trichlorophenol
Base -neutral compounds:
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloronaphthalene
4-chlorophenyl phenyl ether
Chrysene
Di-n-butyl phthalate
Di-n-octyl phthalate
Dibenzo(a,h)anthracene
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
3,3-dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
2,4-dinitrotoluene
• 2,6-dinitrotoluene
1,2-diphenylhydrazine
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachiorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
Indeno(1,2,3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
Test results shall be reported to the Division in DWQ Form- DMR PPA1 or in a form approved by the Director,
within 90 days of sampling. A copy of the report shall be submitted to Central Files to the following address:
Division of Water Quality, Water Quality Section, 1617 Mail Service Center, Raleigh, North Carolina 27699-1617.

one comment on NC0039594
Subject: one comment on NC0039594
From: Hyatt.Marshall @epamail.epa.gov
Date: Wed, 04 Jan 2006 14:14:04 -0500
To: [e-mail]
Copper, Silver, and Zinc should all be expressed as "total" in Part A.1.
will send you a no comment letter.
1 of 1
2/14/2006 5:42 PM

Draft Permit Reviews
Subject: Draft Permit Reviews
From: John Giorgino <[e-mail]>
Date: Tue, 20 Dec 2005 11:35:00 -0500
To: Toya Fields <[e-mail]>
Hi Toya, I have reviewed the following:
NC0039594 Maiden WWTP
NC0031879 Corpening Creek WWTP
NC0021181 Belmont WWTP
I have no comments. Thanks for forwarding them.
John Giorgino
Environmental Biologist
North Carolina Division of Water Quality
Environmental Sciences Section
Aquatic Toxicology Unit
Mailing Address:
1621 MSC
Raleigh, NC 27699-1621
Office: 919 733-2136
Fax: [phone]
Email: [e-mail]
Web Page: http://:vww.esb.enr.state.nc.us
1 of 1
12/29/2005 2:12 PM

The Observer News Enterprise
309 North College Ave.
P O Drawer 48
Newton, NC 28658
NCDENR DWQ/Point Source Branch
Attn: Carolyn Bryant
1617 Mail Service Center
Raleigh, NC 27699-1617
Date(s) Run Description Charge Balance
12/09/05 Public Notice 69.38
Wastewater Permit
Second Affidavit 2.00 71.38
North Carolina
Catawba County
Michael Willard... BEING DULY SWORN SAYS: That he is the Publisher of the OBSERVER
NEWS ENTERPRISE, a newspaper published at Newton, North Carolina. And that it is a
newspaper of general circulation in Catawba County and surrounding counties. The Public Notice
for a Wastewater Permit was published in said newspaper and not a supplement thereof and is a
true copy of the notice as it was published in the regular and entire edition of THE OBSERVER
NEWS ENTERPRISE. Appearing each week, beginning on the 9th day December 2005 and
ending on the 9th day of December 2005 and that said OBSERVER NEWS ENTERPRISE was
regularly distributed to the subscribers during said period.
Sworn to and subscribed before me, this 9th day of December 2005
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NCDENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
Town of Maiden
NC0039594
Facility I nfor n t axe
(1.) Facility Name:
Town of Maiden WWTP
(2.) Permitted Flow MGD):
1.0 I (6.) County: 1 Catawba
(3.) Facility Class:
III j (7.) Regional Office: j Mooresville
4. Pretreatment Program:
N/A
Renewal
(
(8.) USGS TooQuad:
(9.) USGS Quad Name: 1
1 E14SW_
Maiden
(5.) Permit Status:
Stream Char" acteri.stcs
(1.) Receiving Streams
(2.) Sub -basin:
Clark Creek _ _
03-08-35
(7.) Drainage Area (mi2):
66_
12
(8.) Summer 7Q10 (cfs):
(3.) Stream Index Number:
11-129-5-(0.3) )
(9.) Winter 7Q10 (cfs):
22
(4.) Stream Classification:
C
(10.) 30Q2 (cfs):
(5.) 303(d) Status:
(6.) 305(b) Status:
Impaired (see below)
(11.) Average Flow (cfs):
(12.) IWC /a•
77
_.�11..._._._._.�..._..__.__..____..._..._...._.
1.0 Proposed Changes Incorporated Into Permit Renewal
➢ Add TRC limit and compliance schedule.
➢ Remove fecal coliform monitoring based on policy for municipal or domestic facilities not
discharging to Class B or fecal coliform impaired streams.
➢ Reduce instream monitoring to 1/week based on instream data.
➢ An annual pollutant scan has been added to the permit.
2.0 Summary
Above the Maiden WWTP (from the Newton WWTP to SR2007), Clark creek is impaired for
biological impairment due to chlorine (municipal point sourses). Above the WWTP (from
SR2012 to confluence with Pinch Gut Creek) the stream has a biological impairment due to
hydromodification (intentional channelization). This particular segment of Clark Creek is
impaired based on biological data. The cause is unknown but potential sources are industrial
point sources, agriculture, and urban runoff/storm sewers. The 2004 Catawba Basin plan makes
several recommendations for the watershed, most of which deal with non -point sources and the
prevention of additional degradation.
The Maiden WWTP has received speculative limits and submitted an EAA for the expansion of
their facility to 2.5 MGD. This would allow the facility to acquire waste flows from Delta
Apparel, a textile industry also discharging to Clark Creek. During the course of the proposed
expansion, the town would also conduct a much needed upgrade involving transforming the
plant into a single bath reactor system.
For this renewal the town requested several changes to their existing permit. They requested that
instream monitoring be removed or reduced based on the cost of continuing the analyses and the
data over the past two permit cycles. They have also requested a cyanide weekly average limit

NPDES Permit Fact Sheet - 12/06/05 Town of Maiden WWTP
Page 2
NC0039594
cyanide in the influent and at several points throughout the treatment process and the only place
showing hits is in the effluent.
3.0 Compliance Summary
DMR Data Review
DMRs were reviewed for the period of January 2002- September 2005. Monthly average flows for
the facility were at 39% capacity with a maximum average monthly flow of 84% capacity.
Residual chlorine levels were high, however the facility will be receiving TRC limits during this
renewal. Total nitrogen averaged 22.5 mg/L and total phosphorus average 2.48 mg/L. There are
no nutrient restrictions in the Clark Creek watershed. A summary of Average Monthly DMR
data is summarized in Table 1.
Table 1: Monthly Average DMR Data, 2002-2005.
Total
Residual
Flow Temp. Chlorine BOD NH3-N TSS Fecal TN TP
(MGD) (deg C) (ug/L) (mg/L) (mg/L) (mg/L) (#/100 mL) (mg/L) (mg/L)
Avg 0.39 18.28 484.96 17.97 14.98 20.13 44.22 22.48 2.48
Max 0.84 24.12 648.75 31.69 20.51 34.05 149.00 78.07 8.83
Min 0.25 12.59 331.82 9.53 8.78 12.31 7.00 2.30 0.28
Instream data was also reviewed for the two-year period of September 2003- September 2005.
Average monthly data is summarized in Table 2. From this data it would appear that fecal
coliform levels are higher downstream than upstream, however the levels in the effluent are low
enough that this is probably not due to the discharge. The facility has not had any violations of
its fecal coliform limit over the term of the permit cycle. The fecal coliform limit will be removed
due to Division policy for municipal/domestic discharges to waterbodies that are not class B or
fecal coliform impaired. The facility has requested a reduction in instream monitoring. Based on
instream data, monitoring will be reduced to 1/week year-round.
Table 2: Monthly Average DMR data, 2003-2005.
Avg
Max
Min
Upstream
Downstream
TEMP DO
(°C) (mg/L)
Fecal
Coliform
(no./100m1)
Conductivity
(umhos/cm)
TEMP
(°C)
DO
(mg/L)
Fecal
Coliform
(no./100m1)
Conductivity
(umhos/cm)
16.4 8.7
23.6 12.0
7.1 7.0
493.2
1179.0
177.0
493.8
884.0
223.0
16.4
23.7
6.9
8.4
11.7
6.3
652.7
1523.0
183.0
255.1
551.0
200.0
RPA Analysis
RPAs were performed for pollutants of concern as identified in the current permit, as well as
parameters monitored as part of the facility's LTMP.
Copper, silver, and zinc all showed reasonable potential to exceed their respective water quality
standards, however all of the parameters are monitored in the current permit and all are action
level parameters. Monitoring will continue as required in the current permit.
The maximum predicted cyanide concentration was higher than the allowable concentration. In
addition the facility violated its 22 ug/L cyanide limit twice over the previous permit cycle. The

NPDES Permit Fact Sheet — 12/06/05 Town of Maiden WWTP
Page 3 NC0039594
facility has asked for a weekly average cyanide limit instead of the daily maximum, however the
data shows reasonable potential to exceed the acute criteria, which is expressed as a daily
maximum limit.
LTMP data was reviewed for arsenic, cadmium, chromium, copper, lead, mercury, molybdenum,
nickel, selenium, silver and zinc. DMR data from January 2002- September 2005 was used in all
cases except mercury, where only data collected via method 1631 was used (8 samples). For
cadmium and lead all of the samples were below the detection level. For the remaining
parameters, in each case the maximum predicted concentration was far below the allowable
concentration.
WET Test Results
The Maiden WWTP has passed 22/23 WET tests administered since January 2001. The facility
has a chronic toxicity test at an 11% effluent concentration. The single failure was in October,
2003. No cause was determined for the failure and the facility passed the following two
consecutive tests.
Correspondence File Review/Compliance History
The previous permit contained a special condition for a wastewater management plan. The plan
was submitted in 2001, as required, and included a Facility Needs Assessment and a
Rehab/Optimization Strategy. The study identified areas of the WWTP where process units
reached their usable life and were beyond reasonable repair. Some of those units contain parts
that are no longer available and must be fabricated by staff when necessary. Inspections by MRO
staff have documented difficulties in providing effective O&M. Many of the facility's operational
difficulties should be resolved with the new plant is finished. This work is expected to be
completed during this permit cycle.
Since February 2003 the Maiden WWTP has incurred six violations of its NPDES permit limits.
Two were for BOD, two for cyanide, and two for TSS. The BOD and TSS violations were due to
operational difficulties. The facility feels the cyanide violations are related to chlorination at the
facility, since no significant levels of cyanide appear to be present in the WWTP influent.
Only one of the above violations proceeded to an enforcement case. The penalty assessment was
for a weekly average violation of the TSS limit (reported value 64.67 mg/1).
4.0 Proposed Schedule for Permit Issuance
Draft Permit to Public Notice: December 7, 2005
Permit Scheduled to Issue: February 1, 2006
5.0 State Contact Information
If you have any questions on any of the above information or on the attached permit, please
contact Toya Fields at [phone], extension 551.
Copies of the following are attached to provide further information on the permit development:
• Draft permit
NPDES Recommendation by:

REASONABLE POTENTIAL ANALYSIS
Maiden WWTP
NC0039594
Time Period 2002-2005
Ow (MGD) 1
7Q10S (cfs) 12
7010W (cfs) 22
3002 (cfs) 0
Avg. Stream Flow, OA (cfs) 77
Recbing Stream Clark Creek
WWTP Class III
1WC (%) C 7010S 11.439
® 7010W 6.5817
® 3002 N/A
® QA 1.9733
Stream Class C
Outfall 001
Ow =1 MGD
PARAMETER
TYPE
(1)
STANDARDS &
CRITERIA (2)
POL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NiCWCS14FAVI
Chronic Aeub
n IO�t ituPndCw AAowrhb6lr
Copper
NC
7 AL 7.3
ug/L
48 44
88.2
Acute: 7
Chronic: ---61
Action level parameter, retain monitoring ----------
Cyanide
NC
5.0 N 22
10
ug/L
197 44
52.0
Acute: 22
_ _
Chronic: -- 44 --
_ _ -------------------------- Retain limit
Silver
NC
0 AL 1.23
ug/L
49 5
23.9
Acute: 1
__
Chronic: --- 1 --
___ _______
Action level parameter, retain monitoring ----------
Zinc
NC
50 AL 67
ug/L
48 48
235.2
Acute: 67
_ _ __ _
Chronic: 437
_ _ _ _ _ _ _ _ _
Action level parameter, retain monitori_—•—•—•--- ng •
arsenic
C
50
ug/L
16 1
19.1
Acute: N/A
_ _ _ _ __
Chronic: 2,534
_ _ _ _ _ _ _ _________________
Max predicted «allowable
Monitored as part of LTMP
chromium
NC
50
ug/L
16 7
9.2Chronic:
Acute: N/A
437 437
Max predicted « allowable
Monitored as part of LTMP
mercury
NC
12
rtg/L
8 8
Note: n<12
Limited data
32.2
set
Acute: WA
_ _ -_ _
Chronic: 105 •
_ _ _ _ _ _ _ _ —.-------.---_—.—
Max predicted <c auowable
Monitored as part of LTMP
molybdenum
NC
51300
ug/L
16 15
340.2
Acute: N/A
_ _ _ _------
Chronic: 448,461
_ _-_ _ —•------ —•-------
Max predicted <c allowable
Monitored as part of LTMP
ntckel
NC
88
ug/L
16 14
87.6800•
Acute: N/A
_ _ -_ _ ___
Chronic: 769
_ _ _ _ _ _ _ -----------------
Max predicted « allowable
Monitored as part of LTMP
selenium
NC
5
ug/L
16 1
8.6Chronic:
Acute: N/A
44 44
Max predicted « allowable
Monitored as part of LTMP
0 0
N/A
Acute: N/A
__ __ __
Chronic: Error ®Type
---- -----•—•-----•—•—•—•---•---
0 0
N/A
Acute: N/A
Chronic: Error 0 Type
•-------------------------------
Acute: N/A
Chronic: Error 0 Type
' ------------------------------
0 0
N/A•
Acute: WA
_------ __
Chronic: Error 0 Type
--- -------------------------- ---
0 0
N/A
Acute: N/A
__ ___
Chronic: Error 0 Type
- - -----------------------------
• Legend:
C = Carcinogenic
NC = Non.carcinogenic
A = Aesthetic
Freshwater Discharge
39594_rpa.xls, rpa
12/5/2005

REASONABLE POTENTIAL ANALYSIS
Copper
Cyanide
Date Data BDL=1/2DL Results
1 1/15/2002 8 8.0 Sid Dev.
2 2/25/2002 11 11.0 Mean
3 3/25/2002 6.4 6.4 C.V.
4 4/9/2002 13 13.0 n
5 5/15/2002 7.2 7.2
6 6/4/2002 8.9 8.9 Mult Factor = 2.0500
7 7/10/2002 i' 9.4 9.4 Max. Value 43.0 ug/L
8 8/28/2002 15 15.0 Max. Pred Cw 88.2 ug/L
9 9/18/2002 5.4 5.4
10 10/23/2002 7.5 7.5
11 11/25/2002 8.2 8.2
12 12/23/2002 ; 9.8 9.8
13 1/17/2003I'> ' 9.5 9.5
14 2/20/2003 12 12.0
15 3/27/2003 13 13.0
16 4/29/2003 11 11.0
17 5/28/2003 5.6 5.6
18 6/24/2003 8.3 8.3
19 7/23/2003 3.5 3.5
20 8/26/2003 4.8 4.8
21 9/17/2003 7.6 7.6
22 10/22/2003 < 2 1.0
23 11/26/2003 5.2 5.2
24 12/22/2003 < 2 1.0
25 1/16/2004 < 2 1.0
26 1/28/2004 6.6 6.6
27 2/24/2004 27 27.0
28 3/30/2004 12 12.0
29 4/29/2004 3.7 3.7
30 6/2/2004 4 4.0
31 6/15/2004 9.7 9.7
32 7/16/2004 43 43.0
33 8/11/2004 14 14.0
34 9/27/2004 28 28.0
35 10/5/2004 8.9 8.9
36 11/16/2004 < 2 1.0
37 11/30/2004 7 7.0
38 12/16/2004 9.6 9.6
39 1/11/2005 2.4 2.4
40 2/8/2005 4.4 4.4
41 3/10/2005 7.2 7.2
42 3/22/2005 12 12.0
43 4/20/2005 4.7 4.7
44 5/25/2005 6.1 6.1
45 6/14/2005 5 5.0
46 7/19/2005 2.8 2.8
47 8/16/2005 16 16.0
48 9/27/2005 3.8 3.8
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
7.4638
9.0042
0.8289
48
Date Data BDL=1/2DL Results
1 1/3/2002 < 2 5.0 Std Dev. 3.3769
2 1/8/2002 < 2 5.0 Mean 5.4721
3 1/15/2002 2.8 5.0 C.V. 0.6171
4 1/25/2002 < 2 5.0 n 197
5 1 /31 /2002 < 2 5.0
6 2/6/2002 4.1 5.0 Mult Factor = 1.2100
7 2/12/2002 13 13.0 Max. Value 43.0 ug/L
8 2/21/2002 < 2 5.0 Max. Pred Cw 52.0 ug/L
9 2/27/2002 2.4 5.0
10 3/2/2002 2.4 5.0
11 3/7/2002 < 2 5.0
12 3/11/2002 < 2 5.0
13 3/20/2002 < 2 5.0
14 3/28/2002 4.5 5.0
15 4/5/2002 < 2 5.0
16 4/9/2002 < 2 5.0
17 4/17/2002 < 2 5.0
18 4/24/2002 < 2 5.0
19 5/1/2002 < 2 5.0
20 5/8/2002 2.3 5.0
21 5/16/2002 2.1 5.0
22 5/22/2002 < 2 5.0
23 5/29/2002 < 2 5.0
24 6/4/2002 < 2 5.0
25 6/11/2002 < 2 5.0
26 6/19/2002 < 2 5.0
27 6/25/2002 < 2 5.0
28 7/2/2002 2 5.0
29 7/10/2002 7.7 5.0
30 7/16/2002 2 5.0
31 7/24/2002 5.1 5.0
32 7/31/2002 3.1 5.0
33 8/7/2002 < 2 5.0
34 8/16/2002 < 2 5.0
35 8/22/2002 < 2 5.0
36 8/30/2002 < 2 5.0
37 9/4/2002 < 2 5.0
38 9/11/2002 < 2 5.0
39 9/18/2002 < 2 5.0
40 9/25/2002 2.2 5.0
41 10/2/2002 < 2 5.0
42 10/9/2002 < 2 5.0
43 10/15/2002 < 2 5.0
44 10/23/2002 3.2 5.0
45 10/30/2002 5.2 5.0
46 11/6/2002 2.6 5.0
47 11/14/2002 < 2 5.0
48 11/19/2002 < 2 5.0
49 11/27/2002 < 2 5.0
50 12/4/2002 < 2 5.0
51 12/12/2002 2.1 5.0
52 12/20/2002 < 2 5.0
53 12/27/2002 < 2 5.0
54 12/31 /2002 < 2 5.0
55 1/8/2003 9.4 5.0
56 1/17/2003 2 5.0
57 1/21/2003 < 2 5.0
58 2/1/2003 5 5.0
59 2/4/2003 < 2 5.0
60 2/14/2003 < 2 5.0
61 2/18/2003 < 2 5.0
62 3/1/2003 < 2 5.0
63 3/4/2003 < 2 5.0
64 3/11/2003 2 5.0
65 3/18/2003 < 2 5.0
66 3/27/2003 2 5.0
67 4/2/2003 < 2 5.0
68 4/8/2003 < 2 5.0
69 4/16/2003 < 2 5.0
39594_rpa.xls, data
- 1 - 12/6/2005

REASONABLE POTENTIAL ANALYSIS
70 4/22/2003 < 2 5.0
71 4/29/2003 "- 3 5.0
72 5/7/2003 < 2 5.0
73 5/14/2003 < 2 5.0
74 5/21/2003 < 2 5.0
75 5/27/2003 < 2 5.0
76 6/2/2003 < 2 5.0
77 6/11/2003-<% 2 5.0
78 6/17/2003 < 2 5.0
79 6/24/2003 2 5.0
80 7/8/2003 2.6 5.0
81 7/15/2003 < 2 5.0
82 7/23/2003 29 29.0
83 7/29/2003 < 2 5.0
84 8/5/2003 < 2 5.0
85 8/13/2003 < 2 5.0
86 8/19/2003 < 2 5.0
87 8/26/2003 < 2 5.0
88 9/3/2003 < 2 5.0
89 9/10/2003 3.6 5.0
90 9/16/2003 < 2 5.0
91 9/24/2003 <' 2 5.0
92 9/30/2003 2 5.0
93 10/8/2003 < 2 5.0
94 10/16/2003 < 2 5.0
95 10/22/2003 < 2 5.0
96 10/29/2003 < 2 5.0
97 11/4/2003 < 2 5.0
98 11/14/2003 < 2 5.0
99 11/21/2003 < 2 5.0
100 11/26/2003 < 2 5.0
101 12/3/2003 < 2 5.0
102 12/9/2003 < 2 5.0
103 12/18/2003 < 2 5.0
104 12/22/2003 < 2 5.0
105 12/31/2003 < 2 5.0
106 1/7/2004 < 2 5.0
107 1/16/2004 < 2 5.0
108 1/21/2004 < 2 5.0
109 1/28/2004 < 2 5.0
110 2/4/2004 12 12.0
111 2/11/2004 < 2 5.0
112 2/18/2004 < 2 5.0
113 2/24/2004 < 2 5.0
114 3/2/2004 43 43.0
115 3/9/2004 ' 2 5.0
116 3/16/2004 ` 2 5.0
117 3/23/2004 < 2 5.0
118 3/30/2004 3 5.0
119 4/6/2004 <' 2 5.0
120 4/14/2004 < 2 5.0
121 4/16/2004 < 2 5.0
122 4/20/2004 2 5.0
123 4/27/2004 < 2 5.0
124 5/4/2004 < 2 5.0
125 5/11/2004 < 2 5.0
126 5/18/2004 : 16 16.0
127 5/27/2004 < 2 5.0
128 6/1/2004 < 2 5.0
129 6/8/2004 2.5 5.0
130 6/15/2004 < 2 5.0
131 6/22/2004 < 2 5.0
132 6/29/2004 < 2 5.0
133 7/7/2004 < 5 5.0
134 7/16/2004 < 5 5.0
135 7/21/2004 < 5 5.0
136 7/28/2004 < 5 5.0
137 8/4/2004 < 5 5.0
138 8/11/2004 < 5 5.0
139 8/18/2004 < 5 5.0
140 8/25/2004 < 5 5.0
141 9/1/2004 < 5 5.0
142 9/10/2004 < 5 5.0
39594_rpa.xls, data
- 2 - 12/6/2005

REASONABLE POTENTIAL ANALYSIS
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
143 9/14/2004 5 5.0
144 9/22/2004 < 5 5.0
145 9/27/2004 < 5 5.0
146 10/5/2004 < 5 5.0
147 10/13/2004 < 5 5.0
148 10/20/2004 < 5 5.0
149 10/27/2004 < 5 5.0
150 11/2/2004', < 5 5.0
151 11 /9/2004 < 5 5.0
152 11/16/2004 < 5 5.0
153 11/23/2004 < 5 5.0
154 11/30/2004 < 5 5.0
155 12/8/2004 < 5 5.0
156 12/16/2004 < 5 5.0
157 12/21/2004 < 5 5.0
158 12/29/2004 < 5 5.0
159 1/5/2005 < 5 5.0
160 1/11/2005 5 5.0
161 1/20/2005 < 5 5.0
162 1/26/2005 < 5 5.0
163 1/31/2005 < 5 5.0
164 2/8/2005 10 10.0
165 2/15/2005 < 5 5.0
166 2/22/2005 < 5 5.0
167 3/1/2005 < 5 5.0
168 3/9/2005 < 5 5.0
169 3/15/2005 < 5 5.0
170 3/22/2005 < 5 5.0
171 3/30/2005 < 5 5.0
172 4/5/2005 < 5 5.0
173 4/15/2005 < 5 5.0
174 4/20/2005 < 5 5.0
175 4/27/2005 < 5 5.0
176 5/3/2005 < 5 5.0
177 5/10/2005 < 5 5.0
178 5/20/2005 < 5 5.0
179 5/25/2005 < 5 5.0
180 6/1/2005 < 5 5.0
181 6/6/2005 < 5 5.0
182 6/14/2005 < 5 5.0
183 6/21/2005 6 5.0
184 6/28/2005 <S 5 5.0
185 7/5/2005 < 5 5.0
186 7/13/2005 < 5 5.0
187 7/19/2005 < 5 5.0
188 7/26/2005 < 5 5.0
189 8/3/2005 < 5 5.0
190 8/9/2005 <. 5 5.0
191 8/16/2005 <:- 5 5.0
192 8/23/2005 "<. 5 5.0
193 8/30/2005 < 5 5.0
194 9/6/2005 6 5.0
195 9/13/2005 5.1 5.0
196 9/20/2005 8 5.0
197 9/27/2005 < 5 5.0
198
199
200
39594_rpa.xls, data
- 3 - 12/6/2005

REASONABLE POTENTIAL ANALYSIS
Silver
Zinc
Date Data BDL=1/2DL Results
1 1/15/2002 10 10.0 Std Dev.
2 2/25/2002 < 2 1.0 Mean
3 3/25/2002 < 2 1.0 C.V.
4 4/9/2002 < 2 1.0 n
5 5/15/2002 < 2 1.0
6 6/4/2002 < 2 1.0 Mult Factor=
7 7/10/2002 2 2.0 Max. Value
8 8/28/2002 < 2 1.0 Max. Pred Cw
9 9/18/2002 < 2 1.00
10 10/23/2002 < 2 1.00
11 11/25/2002 < 2 1.00
12 12/23/2002 < 2 1.00
13 1/17/2003 2 2.00
14 2/20/2003 < 2 1.00
15 3/27/2003 < 2 1.00
16 4/29/2003 < 2 1.00
17 5/28/2003 < 2 1.00
18 6/24/2003 < 2 1.00
19 7/23/2003 < 2 1.00
20 8/26/2003 < 2 1.00
21 9/17/2003 < 2 1.00
22 10/22/2003 < 2 1.00
23 11/26/2003 < 2 1.00
24 12/22/2003 < 2 1.00
25 1/16/2004 2.3 2.30
26 1/28/2004 < 2 1.00
27 2/24/2004 < 2 1.00
28 3/30/2004 < 2 1.00
29 4/29/2004 < 2 1.00
30 6/2/2004 < 2 1.00
31 6/15/2004 < 2 1.00
32 7/16/2004 < 2 1.00
33 8/11/2004 < 2 1.00
34 9/27/2004 < 2 1.00
35 10/5/2004 < 2 1.00
36 11/16/2004 < 2 1.00
37 11/30/2004 < 2 1.00
38 12/16/2004 < 2 1.00
39 1/11/2005 < 2 1.00
40 2/8/2005 < 2 1.00
41 3/10/2005 < 2 1.00
42 3/22/2005 < 2 1.00
43 4/20/2005 < 2 1.00
44 4/29/2005 < 2 1.00
45 5/25/2005 < 2 1.00
46 6/14/2005 6.1 6.10
47 7/19/2005 < 2 1.00
48 8/16/2005 < 2 1.00
49 9/27/2005 < 2 1.00
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
Date Data BDL=1/2DL Results
1.4756 1 1/15/2002 61 61.0 Std Dev. 26.7486
1.3551 2 2/25/2002 56 56.0 Mean 66.4583
1.0890 3 3/25/2002 72 72.0 C.V. 0.4025
49 4 4/9/2002 56 56.0 n 48
5 5/15/2002 44 44.0
2.3900 6 6/4/2002 55 55.0 Mult Factor = 1.4700
10.0 ug/L 7 7/10/2002 95 95.0 Max. Value 160.0 ug/L
23.9 ug/L 8 8/28/2002 130 130.0 Max. Pred Cw 235.2 ug/L
9 9/18/2002 54 54.0
10 10/23/2002 46 46.0
11 11/25/2002 45 45.0
12 12/23/2002 53 53.0
13 1/17/2003 52 52.0
14 2/20/2003 52 52.0
15 3/27/2003 110 110.0
16 4/29/2003 46 46.0
17 5/28/2003 36 36.0
18 6/24/2003 45 45.0
19 7/23/2003 31 31.0
20 8/26/2003 52 52.0
21 9/17/2003 44 44.0
22 10/22/2003 34 34.0
23 11/26/2003 76 76.0
24 12/22/2003 65 65.0
25 1/16/2004 87 87.0
26 1/28/2004 75 75.0
27 2/24/2004 54 54.0
28 3/30/2004 160 160.0
29 4/29/2004 110 110.0
30 6/2/2004 40 40.0
31 6/15/2004 56 56.0
32 7/16/2004 87 87.0
33 8/11/2004 59 59.0
34 9/27/2004 88 88.0
35 10/5/2004 59 59.0
36 11/16/2004 67 67.0
37 11/30/2004 120 120.0
38 12/16/2004 84 84.0
39 1/11/2005 81 81.0
40 2/8/2005 76 76.0
41 3/10/2005 71 71.0
42 3/22/2005 92 92.0
43 4/20/2005 59 59.0
44 5/25/2005 70 70.0
45 6/14/2005 32 32.0
46 7/19/2005 40 40.0
47 8/16/2005 57 57.0
48 9/27/2005 56 56.0
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
39594_rpa.xls, data
- 4 - 12/6/2005

REASONABLE POTENTIAL ANALYSIS
arsenic
chromium
Date Data BDL=1/2DL Results
1-Sep < 5 2.5 Std Dev. 1.5000
Jul-05 Mean 2.8750
Jun-05 < 5 2.5 C.V. 0.5217
Mar-05 < 5 2.5 n 16
Jul-04 < 5 2.5
May-04 Mult Factor = 2.2500
Apr-04 Max. Value 8.5 ug/L
Mar-04 < 5 2.5 Max. Pred Cw 19.1 ug/L
Nov-04 < 5 2.5
Oct-04
Sep-04 < 5 2.5
Jan-04 8.5 8.5
Dec-03 < 5 2.5
Aug-03 < 5 2.5
Jun-03 < 5 2.5
Mar-03 < 5 2.5
Oct-02 < 5 2.5
Jul-02 < 5 2.5
Apr-02 < 5 2.5
Jan-02 < 5 2.5
Date Data BDL=1/2DL Results
1 1-Sep 2.2 2.2 Std Dev.
2 Jul-05 Mean
3 Jun-05 < 2 1.0 C.V.
4 Mar-05 < 2 1.0 n
5 Jul-04 3.9 3.9
6 May-04 Mult Factor= 2.3600
7 Apr-04 Max. Value 3.9 ug/L
8 Mar-04 2.1 2.1 Max. Pred Cw 9.2 ug/L
9 Nov-04 3.3 3.300
10 Oct-04
11 Sep-04 < 2 1.000
12 Jan-04 2.8 2.800
13 Dec-03 2 2.000
14 Aug-03 < 2 1.0
15 Jun-03 < 2 1.0
16 Mar-03 < 2 1.0
17 Oct-02 < 2 1.0
18 Jul-02 2.4 2.4
19 Apr-02 < 2 1.0
20 Jan-02 < 2 1.0
0.9659
1.7313
0.5579
16
39594_rpa.xls, data
- 7 - 12/6/2005

REASONABLE POTENTIAL ANALYSIS
mercury
molybdenum
Date Data BDL=1/2DL Results
1 1-Sep 6.88 6.9 Std Dev.
2 Jul-05 4.22 4.2 Mean
3 Jun-05 C.V.
4 Mar-05 n
5 Jul-04 3.24 3.2
6 May-04 4.39 4.4
7 Apr-04 5.27 5.3
8 Mar-04
9 Nov-04 6.29 6.3
10 Oct-04 10.4 10.4
11 Sep-04
12 Jan-04
13 Dec-03 12 12.1
Mult Factor =
Max. Value
Max. Pred Cw
3.1276
6.5988
0.4740
8
2.6600
12.1 ng/L
32.2 ng/L
Date Data BDL=1/2DL Results
1-Sep 21 21.0 Std Dev. 37.6041
Jul-05 Mean 65.0063
Jun-05 63 63.0 C.V. 0.5785
Mar-05 18 18.0 n 16
Jul-04 87 87.0
May-04
Apr-04
Mar-04 53 53.0
Nov-04 69 69.0
Oct-04
Sep-04 110 110.0
Jan-04 < 0.2 0.1
Dec-03 19 19.0
Aug-03 85 85.0
Jun-03 56 56.0
Mar-03 94 94.0
Oct-02 98 98.0
Jul-02 140 140.0
Apr-02 67 67.0
Jan-02 60 60.0
Mult Factor =
Max. Value
Max. Pred Cw
2.4300
140.0 ug/L
340.2 ug/L
39594_rpa.xls, data
- 10 - 12/6/2005

REASONABLE POTENTIAL ANALYSIS
nickel
selenium
Date Data BDL=1/2DL Results
1 1-Sep 12 12.0 Std Dev. 7.5669
2 Jul-05 Mean 11.2813
3 Jun-05 9.2 9.2 C.V. 0.6707
4 Mar-05 6.3 6.3 n 16
5 Jul-04 6.1 6.1
6 May-04 Mult Factor = 2.74
7 Apr-04 Max. Value 32.0 ug/L
8 Mar-04 17 17.0 Max. Pred Cw 87.7 ug/L
9 Nov-04 20 20.0
10 Oct-04
11 Sep-04 19 19.0
12 Jan-04 32 32.0
13 Dec-03 11 11.0
14 Aug-03 9.4 9.4
15 Jun-03 11 11.0
16 Mar-03 6 6.0
17 Oct-02 7.7 7.7
18 Jul-02 < 5 2.5
19 Apr-02 < 5 2.5
20 Jan-02 8.8 8.8
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
Date Data BDL=1/2DL Results
1 1-Sep < 5 2.5 Std Dev. 0.75
2 Jul-05 Mean 2.69
3 Jun-05 < 5 2.5 C.V. 0.28
4 Mar-05 < 5 2.5 n 16
5 Jul-04 < 5 2.5
6 May-04 Mult Factor = 1.5700
7 Apr-04 Max. Value 5.5 ug/L
8 Mar-04 < 5 2.5 Max. Pred Cw 8.6 ug/L
9 Nov-04 < 5 2.5
10 Oct-04
11 Sep-04 < 5 2.5
12 Jan-04 5.5 5.5
13 Dec-03 < 5 2.5
14 Aug-03 < 5 2.5
15 Jun-03 < 5 2.5
16 Mar-03 < 5 2.5
17 Oct-02 < 5 2.5
18 Jul-02 < 5 2.5
19 Apr-02 < 5 2.5
20 Jan-02 < 5 2.5
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
39594_rpa.xls, data
- 13 - 12/6/2005

MONITORING REPORT(MR) VIOLATIONS for:
Permit:
Facility Name: %
egion: %
County: %
Report Date: 12/05/05 Page: 1 of 1
PERMIT: NC0039594
FACILITY: Town of Maiden - Maiden WWTP
COUNTY: Catawba
REGION: Mooresville
Limit Violation
MONITORING OUTFALL
REPORT / PPI LOCATION PARAMETER
08 - 2005 001 Effluent BOD, 5-Day (20 Deg. C)
08 - 2005 001 Effluent BOD, 5-Day (20 Deg. C)
07 - 2003 001 Effluent Cyanide, Total (as Cn)
03 - 2004 001 Effluent Cyanide, Total (as Cn)
02 - 2003 001 Effluent Solids, Total Suspended
03 - 2003 001 Effluent Solids, Total Suspended
Monitoring Violation
VIOLATION
DATE FREQUENCY
08/06/05 3 X week
08/31/05 3 X week
07/23/03 Weekly
03/02/04 Weekly
02/28/03 3 X week
03/01/03 3 X week
UNIT OF
MEASURE
CALCULATED
LIMIT VALUE
mg/1 45 55.17
mg/I 30 31.69
ug/I 22 29
ug/I 22 43
mg/l 30 34.05
mg/I 45 64.67
VIOLATION TYPE
Weekly Average Exceeded
Monthly Average Exceeded
Daily Maximum Exceeded
Daily Maximum Exceeded
Monthly Average Exceeded
Weekly Average Exceeded
VIOLATION ACTION
None
None
Proceed to NOV
Proceed to NOV
Proceed to NOV
Proceed to
Enforcement Case
MONITORING OUTFALL
REPORT / PPI LOCATION
05 - 2004 001 Effluent
07 - 2003 001 Effluent
05 - 2004 001 Effluent
05 - 2004 001 Effluent
05 - 2004 001 Effluent
01 - 2003 001 Effluent
04 - 2003 001 Effluent
04 - 2004 001 Effluent
05 - 2004 001 Effluent Zinc, Total (as Zn)
PARAMETER
Copper, Total (as Cu)
Cyanide, Total (as Cn)
Nitrogen, Total (as N)
Phosphorus, Total (as P)
Silver, Total (as Ag)
Temperature, Water Deg.
Centigrade
Temperature, Water Deg.
Centigrade
Temperature, Water Deg.
Centigrade
VIOLATION
DATE FREQUENCY
05/31/04 Monthly
07/05/03 Weekly
05/31/04 Monthly
05/31/04 Monthly
05/31/04 Monthly
01/04/03 5 X week
04/19/03 5 X week
04/10/04 5 X week
05/31/04 Monthly
UNIT OF
MEASURE
mg/l
ug/i
mg/I
mg/I
mg/I
deg c
deg c
deg c
ug/I
LIMIT
CALCULATED
VALUE
VIOLATION TYPE
Frequency Violation
Frequency Violation
Frequency Violation
Frequency Violation
Frequency Violation
Frequency Violation
Frequency Violation
Frequency Violation
Frequency Violation
VIOLATION ACTION
Proceed to NOV
None
Proceed to NOV
Proceed to NOV
Proceed to NOV
None
None
None
Proceed to NOV

Permit: NC0039594
Region: Mooresville
Permit Enforcement History
Facility: Maiden WWTP
County: Catawba
Owner: Town of Maiden
Penalty Remission Enforcement Collection Has
Assessment Penalty Enforcement Request Conference EMC Memo Sent Payment
Case Number Approved Amount Costs Damages Received Held Hearing Held to AGO Total Paid Balance Due Plan Case Closed
LV-2000-0161 05/19/00 $3,000.00 $82.17
$3,082.17
.00 No 06/14/00
LV-2003-0481 07/16/03 $250.00 $85.45 07/26/03 10/01/03 $335.45 .00 No 10/28/03
Total Cases: 2
$3,250.00 $167.62
Total Penalties: $3,417.62
3,417.62 $.00
Total Penalties after remission(s): $3,417.62

TOWN OF MAIDEN
NORTH CAROLINA
28650
P.O. BOX 125 • [phone]
FAX [phone] • TDD 800-735-2962
May 20. 2005
Carolyn Bryant
NCDENR/Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
RE: PERMIT NC0039594 RENEWAL REQUESTS
Dear Ms. Bryant:
.......�...w...,�,::•
1
b ,:N 2 4 ��., 1J
J
DENR - WMER QUALI I r
POIiT BRANCH
The Town of Maiden WWTP submitted our permit renewal earlier this year. Talking with Mike
Parker (Moorseville Regional Office), we would like to request some changes in the new permit.
We would like the stream monitoring be removed or at least reduced to weekly year round. The
Town has been conducting stream monitoring for the last two permit cycles. We are basing the
request for dropping or reducing the monitoring due to cost of fuel, manpower, lab analysis, etc.
We feel there is sufficient data to support the request. Also, our cyanide limit presently is a daily
max. If a limit for cyanide is included in the next permit, we would like a weekly average
instead of a daily max. We feel the few hits on cyanide the Town has experienced were a result
from the chlorination process. Presently, cyanide samples are collected on the influent, aeration
sludge, disposal sludge, industrial, domestic point in collection system, & effluent. From sample
results, the only cyanide that shows is on the effluent. We feel the weekly average would give us
the ability to spread the sample collection over several days (if hits begin to show) instead of one
day.
If you have any questions or need additional information concerning this request, give me a call
at [phone].
Best regards,
Michael Lingerfelt
WWTP Superintendent

To: NPDES Unit
Water Quality Section
Attention: Toya Fields
Date: July 12, 2005
SOC
NPDES STAFF REPORT AND RECOMMENDATI
County: Catawba
NPDES Permit No.: NC0039594
MRO No.: 05-27
PART I - GENERAL INFORMATION
1. Facility and address: Town of Maiden WWTP
Post Office Box 125
Maiden, N.C. 28650
t _ J
DE.%R - WATE.. QUAL
POINT SOURCE BRA
2. Date of investigation: May 18, 2005
3. Report prepared by: Michael L. Parker, Environmental Engineer II
4. Person contacted and telephone number: Mike Lingerfelt, ORC [phone].
5. Directions to site: From the jct. of Main Street and South "E" Avenue in the Town of
Maiden, travel west on South "E" Avenue x 0.2 mile and turn right onto Finger Street. The
WWTP is located at the end of Finger Street.
6. Discharge point(s), list for all discharge points: -
Latitude: 35 ° 34' 35"
Longitude: 81 ° 14' 26"
Attach a USGS Map Extract and indicate treatment plant site and discharge point on map.
USGS Quad No.: E 14 SW
7. Site size and expansion area consistent with application: Yes. There is limited area available
for expansion.
8. Topography (relationship to flood plain included): Hilly topography changing rapidly to
flood plain adjacent to the WWTP site.
9. Location of nearest dwelling: No dwellings are Located within 1000 feet of the WWTP site.

Page Two
10. Receiving stream or affected surface waters: Clark Creek (currently listed on NC's 303(d)
list of impaired waters).
a. Classification: C
b. River Basin and Subbasin No.: Catawba 030835
c. Describe receiving stream features and pertinent downstream uses: The receiving
stream is 15-20 feet wide and variable in depth. Upstream dischargers are Duck
Head Apparel and the City of Newton. Downstream uses are primarily agriculture
and secondary recreation.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater: 1.0 MGD (Design Capacity)
b. What is the current permitted capacity: 1.0 MGD
c. Actual treatment capacity of current facility (current design capacity): 1.0 MGD
d. Date(s) and construction activities allowed by previous ATCs issued in the previous
two years: There have been no ATCs issued to the Town in the past two years
e. Description of existing or substantially constructed WWT facilities: The existing
WWT facilities consist of influent pumps followed by mechanical screening, grit
removal, instrumented flow measurement, dual 0.5 MGD pure oxygen treatment
units each containing two -cell aeration (diffused), clarification, aerobic digestion,
effluent (gas) disinfection, and dechlorination. This facility also has sludge drying
beds and stand-by power.
f. Description of proposed WWT facilities: See Part IV.
g. Possible toxic impacts to surface waters: This facility has consistently passed its
toxicity testing for the past three (3) years.
h. Pretreatment Program (POTWs only): Approved (only one permitted SIU).
2. Residual handling and utilization/disposal scheme: Residuals are disposed through the City
of Hickory Compost Facility under the authority of Permit No. WQ0004563.
3. Treatment plant classification: Class IV (no change from previous rating).
4. SIC Code(s): 4952 Wastewater Code(s): 01 MTU Code(s): 14002
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds or are any public monies
involved (municipals only)? Public monies were used in the construction of this facility.
2. Special monitoring or limitations (including toxicity) requests: None at this time.
3. Important SOC/JOC or Compliance Schedule dates: This facility is not under an SOC nor is
one being considered at this time.

Page Three
PART IV - EVALUATION AND RECOMMENDATIONS
The Town of Maiden requests renewal of the subject NPDES Permit. There have been no
changes to the existing WWT facilities since the Permit was last renewed; however, plans are
underway for a major expansion/upgrade during the term of the renewed permit. If additional
limitations (such as NH3 as N) are added, the Town most likely will not be able to comply until the
new WWT facilities are constructed. If such is the case, a compliance schedule (to be placed in the
Permit) will be recommended.
The Town is currently operating a 1.0 MGD, activated sludge WWTP, which utilizes pure
oxygen for aeration. In 2001, a needs assessment commissioned by the Town identified areas of the
existing WWTP where process units have reached their usable life, and are beyond reasonable
repair. Some of these units contain parts that are no longer available and must be fabricated when
necessary. Inspections by MRO staff have documented difficulties in providing effective O&M.
Until recently, I/I was contributing a heavy hydraulic load on the WWTP; however, an aggressive
rehabilitation program has reduced I/I to acceptable levels.
Located within the Town is Delta Mills (DM), a textile company that maintains a WWTP for
treatment and disposal of industrial wastewater from a textile dying operation. DM is also facing a
WWTP upgrade in order to comply with more stringent effluent limitations expected in their
NPDES permit renewal. Such being the case, DM is working with the Town to eventually eliminate
the DM WWTP and discharge all its wastewater to the Town's collection system. The DM WWTP
will utilize components of the existing WWTP to provide pretreatment prior to discharging to the
Town. With the proposed expansion of the Town's WWTP, and the elimination of the DM
discharge, the receiving stream will see a net increase of 0.5 MGD of wastewater.
A recently completed 201 Facilities Plan evaluated various wastewater treatment alternatives
available to the Town. The upgrading of the existing WWTP to a Sequencing Batch Reactor (SBR)
System with tertiary filters has been identified as the most economically viable option given the
quantity and strength of the Town's wastewater. SBR systems are also capable of high levels of
treatment, and can handle wide variations in flow. This ability to treat to high levels will offer the
Town flexibility should additional effluent restrictions (such as nutrient removal) be placed on the
Town in future NPDES permits. The improved treatment performance of the SBR system should
also aid the receiving stream.
Pending receipt and approval of the draft permit, it is recommended that the permit be
renewed as requested. t.
Signature of Report Preparer
l/r •2-4,
/(,eeeizal
Water Quality Regi nal Supervisor
h:ldsr\dsr05\maiden.sr
43/45-
Dat
• V. —
Date

TOWN OF MAIDEN
NORTH CAROLINA
28650
P.O. BOX 125 • [phone]
FAX [phone] • TDD 800-735-2962
January 26, 2005
Valery Stephens
NCDENR
DWQ/Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
RE: NPDES PERMIT NC0039594 RENEWAL
Dear Mrs. Stephens:
The Town of Maiden WWTP (Permit # NC0039594) is requesting renewal of its NPDES permit.
The completed application and all associated documents are enclosed for your review. There are
no changes at the facility since the last permit renewal. However, the Town is currently working
on plans to upgrade our facility to a 2.5 MGD plant. This upgrade includes accepting waste from
Delta Apparel, located in Maiden.
If you should have any questions or additional information is needed, give me a call at (828)
428-5032.
Best regards,
Michael Lingerfelt
WWTP Superintendent
Enclosures
J A N 2 7 2005
D: : 3 - 1" ,i QUALITY
Pu TSOU CE BRANCH

FACILITY NAME AND PERMIT NUMBER:
TOWN OF MAIDEN WWTP, NC0039594
PERMIT ACTION REQUESTED:
REii.: VA,
RIVER BASIN:
x- -
SUPPLEMENTAL APPLICATION INFORMATION
PART F.INDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
All treatment works receiving discharges from significant Industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
F.1. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment
® Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide
industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs. 2
program?
the number of each of the following types of
works, copy questions F.3 through F.8 and
b. Number of ClUs. 1
SIGNIFICANT INDUSTRIAL USER INFORMATION:
to the treatment
Supply the following information for each SIU. If more than one SIU discharges
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: GETRAG GEARS
Mailing Address: 1848 GETRAG PARKWAY
NEWTON NC 28658
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's
discharge.
Manufacturer of gears, shafts, and axle assemblies for the automotive industry.
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Gears and axle assemblies
Raw material(s): Cast iron, aluminum, manganese phosphate, metal cutting fluids, and propane.
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater
day (gpd) and whether the discharge is continuous or intermittent.
5,229 gpd ( continuous or intermittent)
discharge into the collection system in gallons per
flow discharged into the collection system
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
7,500 gpd ( continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes 0 No
b. Categorical pretreatment standards ® Yes 0 No
If subject to categorical pretreatment standards, which category and subcategory?
433

FACILITY NAME AND PERMIT NUMBER:
TOWN OF MAIDEN WWTP, NC0039594
PERMIT ACTION REQUESTED:
R
RIVER BASIN:
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes ® No (go to F.12)
F.10. Waste transport. Method by which RCRA waste is received (check all that apply):
❑ Truck 0 Rail 0 Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
CERCLA (SUPERFUND) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) ID No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
F.15. Waste Treatment.
a. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous 0 Intermittent If intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE

FACILITY NAME AND PERMIT NUMBER:
TOWN OF MAIDEN VVWTP, NC0039594
PERMIT ACTION REQUESTED:
R,I. ,..
RIVER BASIN:
SUPPLEMENTAL APPLICATION INFORMATION
PART F. INDUSTRIAL USER DISCHARGES AND RCRA/CERCLA WASTES
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
F.1. Pretreatment program. Does the treatment works have, or is subject ot, an approved pretreatment program?
® Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (ClUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs. 2
b. Number of CIUs. 1
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: CATALER NORTH AMERICAN CORPORATION
Mailing Address: 2002 CATALER DRIVE
LINCOLNTON NC 28092
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
CATALER APPLIES CERAMIC SLRRIES & PRECIOUS METAL COATINGS TO RAW CERAMIC SUBSTRATES TO CREATE CATALYSTS FOR
THE AUTOMOTIVE INDUSTRY.
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Automotive Catalytic Converters
Raw material(s): Ceramic Substrates, Alumina, Cerium, Zirconium, Lanthanium, Platinum, Palladium, Rhodium, & Barium.
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
9.978 gpd ( continuous or intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
2.000 gpd ( continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits EI Yes 0 No
b. Categorical pretreatment standards 0 Yes IE No
If subject to categorical pretreatment standards, which category and subcategory?

FACILITY NAME AND PERMIT NUMBER:
TOWN OF MAIDEN WWTP, NC0039594
PERMIT ACTION REQUESTED:
Ri
RIVER BASIN:
F.8. Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
contributed to any problems (e.g.,
RCRA HAZARDOUS WASTE RECEIVED BY TRUCK, RAIL, OR DEDICATED PIPELINE:
F.9. RCRA Waste. Does the treatment works receive or has it in the past three years received RCRA hazardous waste by truck, rail or dedicated pipe?
❑ Yes EI No (go to F.12)
F.10. Waste transport. Method by which RCRA waste is received (check all that apply):
❑ Truck 0 Rail ❑ Dedicated Pipe
F.11. Waste Description. Give EPA hazardous waste number and amount (volume or mass, specify units).
EPA Hazardous Waste Number Amount Units
CERCLA (SUPERFUNO) WASTEWATER, RCRA REMEDIATION/CORRECTIVE ACTION
WASTEWATER, AND OTHER REMEDIAL ACTIVITY WASTEWATER:
F.12. Remediation Waste. Does the treatment works currently (or has it been notified that it will) receive waste from remedial activities?
❑ Yes (complete F.13 through F.15.) ® No
F.13. Waste Origin. Describe the site and type of facility at which the CERCLA/RCRA/or other remedial waste originates (or is excepted to origniate in
the next five years).
F.14. Pollutants. List the hazardous constituents that are received (or are expected to be received). Include data on volume and concentration, if
known. (Attach additional sheets if necessary.)
F.15. Waste Treatment.
a. Is this waste treated (or will be treated) prior to entering the treatment works?
❑ Yes ❑ No
If yes, describe the treatment (provide information about the removal efficiency):
b. Is the discharge (or will the discharge be) continuous or intermittent?
❑ Continuous 0 Intermittent If intermittent, describe discharge schedule.
END OF PART F.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE

MAIN BLDG
PLANT
GENERATOR
BAR SCREEN &
GRIT REMOVAL
CHLORINE ROOM
TREATMENT UNIT #1
CLARIFIER
AERATION TWO
AEROBIC
DIGESTOR
0
PUMP STATION
AERATION
ONE
CHLORINE
CHAMBER
SCHEMATIC OF WASTEWATER FLOW
TOWN OF MAIDEN WWTP
MAIDEN, NORTH CAROLINA
DISCHARGE SERIAL NO: 001
1/20/05
OXYGEN TANK
OXYGEN
FLOW TO ►
TREATMENT
UNITS
I I -.
DRYING BEDS
AEROBIC
DIGESTOR
KEY: ► FLOW THRU TREATMENT PLANT
--- ► SLUDGE DISPOSAL FROM PLANT
► OXYGEN FLOW TO TREATMENT UNITS
CHLORINE FLOW TO TREATMENT UNITS
UNIT DRAIN & DIGESTER SUPT.
TREATMENT UNIT # 2
EFFLUENT TO
SLUDGE TO
DISPOSAL i 0111011111111E-b
HICKORY > aA1
v COMPOST
I pi

CLARK CREEK
PLANT OUTFALL
Pwsv-7
TMV-4 ;
WASTEWATER FLOW
SLUDGE FLOW
- - FILTRATE DRYAN FLOW
DRAIN FLOW
CHLORINE LINE PROCESS UNIT NO.2
- LIQUID OXYGEN LINE
CITY WATER SUPPLY
MANHOLE
VALVE
• FIRE ,HYDRANT
SLUDGE DRYING BEDS
LIQUID OXYGEN
STORAGE
PLANT INFLUENT
LOCATION MAP
US 321
CONTROL
PANEL NO.3
WATER METER AND
BACKFLOW PREVENTER
INFLUENT PUMPING STATION
PWSV-4
'1 ADMINISTRATION BUILDING
T EMERGENCY GENERATOR
PWSV-8 FUEL TANK
FIGURE 1-1
PROCESS UNIT NO.1
LOCATION MAP AND PLANT PIPING LAYOUT

a
EFFLUENT LINE TO
CLARK CREEK
SLUDGE DRAIN UNE TO
SLUDGE DRYING BEDS
TMV-3
OXYGEN FEED PORTS TMV-4
MH5
CHLORINE LINE •
FROM CHLORINE
ROOM
CHLORINE .%
DIFFUSER
•\
CLARIFIER
EFFLUENT UNE.'
•
PURGE BLOWER
f
CLARIFIER EFFLUENT
TREATMENT MODULE ON.2
TMV-6
r
••
TROUGH
•
INFLUENT UNE FROM
INFLUENT PUMPING STATION
\."
PLANT DRAIN LINE TO
INFLUENT PUMPING STATION
MH4
•+ MCC-2
\
i ►;;:/ VAPORIZER
LIQUID OXYGEN
TANK
1-1,;:!)
i r
. .,1 ` -
FIGURE 3.5-1
TREATMENT MODULE (TYP)

TOWN OF MAIDEN
WASTEWATER TREATMENT PLANT
MAIDEN, N.C.
PROCESS DESCRIPTION
The Town of Maiden is an independent municipal utility operating its
own wastewater treatment plant, which is a pure oxygen treatment plant with
a capacity of 1.0 MGD (million gallons per day). This system can be
expected to achieve pollution load removals of 88% in terms of BOD and 85%
in terms of suspended solids. These systems are preliminary treatment, the
primary treatment, the secondary treatment, and the sludge handling.
The preliminary treatment system removes large solids, scum, and grit
from the influent to protect the remainder of the plant units from damage
due to jamming, grease accumulation, or excessive abrasion. Large solids
are screened out by a mechanical bar screen and grit settles out in a
specially contoured grit chamber.
The primary treatment system is provided by the Pure Oxygen Treatment
Module. The oxygenation system treats the influent flow when combined with
the required recycle sludge flow in a covered reactor tank containing
concurrent gas -liquid stages for biological treatment. The influent to the
biological system enters the first stage of the reactor where it is mixed
with the system's own return activated sludge.
Oxygen gas is introduced into the first stage where it is contacted by
the mixed liquor. The mixed liquor and oxygen rich gas flow concurrently
to the second stage, which has the same characteristics as the first except
that the oxygen concentration in the gas decreases. Each of the stages is
equipped with a surface entrainment oxygenator for mechanical agitation and
oxygen dissolution, and the appropriate accessories to provide safe and
efficient operation.
The secondary treatment system consists of a clarifier, chlorination
zone, and aerobic digester. Effluent from the second stage reactor flows
into the clarifier through baffles located near the bottom of the tank.
The solids settle and the effluent water flows over the weir to the
chlorination zone. Chlorine gas is fed where the clarifier effluent enters
the chlorine chamber. The final effluent leaves the chlorine chamber over
a weir into a collection box and into the final pipe. The chlorinated
effluent is then discharged into the Clark Creek receiving stream.
The aerobic digester takes the waste activated sludge from the
clarifier and further stabilizes the biodegradable sludge. The sludge in
the digester is aerated with oxygen gas and is continuously circulated to
maintain uniform solids suspension using surface aerators properly designed
for the task.
The sludge handling system is quite simple. Sludge from the aerobic
digester is transported to the Hickory Regional Compost Facility (Permit #
WQ0004563) for final disposal.

TOWN OF MAIDEN
NORTH CAROLINA
28650
P.O. BOX 125 • [phone]
FAX [phone] • TDD 800-735-2962
SLUDGE MANAGEMENT PLAN
Town of Maiden WWTP
Sludge that is generated during the process of wastewater treatment is handled and disposed of
properly through the means of composting. Sludge is digested in aerobic digestion and
transferred to another tank. After settling, the water is pumped backed through the plant for
treatment while the settled sludge is pumped into another digester. From this point, the sludge is
loaded via a pump into a small pumper truck (2,000 gal) and transported to the Regional
Compost Facility (RCF) in Hickory, NC. The compost plant is operated by Veolia Water North
America Operating Services. The permit number for the facility is WQ0004563. The final
product from the compost facility meets all guidelines outlined in the permit and 503 Regulations
for Class A sludge.
Michael Lingerfelt
WWTP Superintendent

January 24, 2005
TOWN OF MAIDEN
NORTH CAROLINA
28650
P.O. BOX 125 • [phone]
FAX [phone] • TDD 800-735-2962
r fin
Memo To File fRC+ rj 1
Re: Sewer Distribution Correction
During the past 2 years the Town of Maiden has undertaken aggressive measures to
reduce inflow and infiltration (I&I). During a major rain event, Maiden's Sewer Plant has
experienced flows double the current capacity.
The Town has worked with the State, McGill Engineering, Rural Water Staff, and Town
Staff to measure flows during rain events, smoke test all sewer lines, camera lines, flush
lines, cut out roots, perform point repairs, rebuild manholes, replace manholes, and sleeve
leaking sewer lines. These activities have provided valuable data in determining where
the major problems were and where the Town should spend moneys to obtain the greatest
result.
Based on flow data, it appears, the Town has succeeded in reducing I&I over 300,000
gallons per major event. The Town is committed to continue this maintenance program to
reduce the I&I problems even greater.
New flow meters have been purchased, additional pipe lining has been scheduled,
manholes repairs and replacement will continue on an as needed bases. These along with
smoke testing, camera inspection, and visual inspections to help determine which
problems and concerns should be corrected next.
Eddie Faulkner
Director Public Works