NC0025496_Permit (Issuance)_20120330

NPDES DOCYNEN'1' SCANNING COVER SHEET
Alen
nMIT
NPDES Permit:
NC0025496
Lincolnton WWTP
Document Type: , �
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Other
Speculative Limits
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
Document Date:
March 30, 2012
This document is pririted on reuse paper -ignore any
content on the reirerse side

9
Arai
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Charles Wakild, P.E. Dee Freeman
Govemor Director Secretary
March 30, 2012
Mr. Steve Peeler
Director of Public Works and Utilities
City of Lincolnton
P.O. Box 617
Lincolnton, NC 28093-0617
Subject: Issuance of NPDES Permit Renewal
NC0025496
Lincolnton WWTP
Lincoln County
Class WW3
Dear Mr. Peeler:
The Division of Water Quality (Division) personnel have reviewed and approved your application for renewal of the
subject permit. Accordingly, we are forwarding the attached NPDES discharge permit. It 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 October 15, 2007, or as subsequently amended.
The following changes have been made from the current permit:
• The cyanide limit of 22 µg/ L and monitoring was removed from the permit. Cyanide will continue monitoring
via the LTMP.
• The Phenols limit of 21 jig/ L was removed from the permit. Monitoring has been changed to Monthly as Total
Phenolic Compounds based on the RPA.
• Copper and Zinc monitoring are removed from the permit based on results of the reasonable potential analysis
which showed no RP. Copper and zinc will continue monitoring via the LTMP.
• The Antimony Daily Maximum limit is retained; a 52.0 µg/ L Monthly Average limit has been added as a
chronic limit.
• The requirement for an annual effluent scan has been modified to require three scans during a 5 year permit
cycle. See Condition A.(4).
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone] Customer Service:1-877-623.6748
Internet http:ll h2ostate.nc.us /
An Equal opportunity 1 Affirmative Action Employer
No NthCazo a
aurally

• The TRC footnote has been updated to the Division's current language. Special Condition A.(2) regarding TRC
compliance schedule has been removed, the remaining conditions have been renumbered accordingly.
• The Division is expecting to issue a Statewide TMDL for mercury during 2012. In expectation of this TMDL, a
Mercury Re -Opener clause has been added to the permit. See Condition A.(5).
In your comments to the Permit Draft, dated 2/10/2012, you requested some changes in the description of configuration
of the facility. These have been incorporated. You pointed out that the facility address listed was in error. This has
been corrected. You requested that the Fact Sheet be updated with the corrected equipment configuration. This has
been done. You requested that the antimony limits be removed. We cannot do this. We are required by law to analyze
your effluent data using an EPA approved statistical evaluation, called a Reasonable Potential Analysis. This software
calculates the statistical probability of pollutants exceeding NC's Water Quality Standards by analyzing your plant's
discharge data (DMRs). We evaluated data from 2009 through September 2011. There are 34 antimony data points;
two of them matched or exceeded the 52 µg/ L maximum allowable concentration. This is a chronic standard, so a
Monthly Average limit is required. EPA also requires a Daily Maximum limit too, so the Daily Maximum limit
remained on the permit.
If any parts, measurement frequencies, or sampling requirements contained in this permit are unacceptable, you have the
right to an adjudicatory hearing upon written request within thirty (30) days after receiving this letter. Your request must
take the form of a written petition conforming to Chapter 150B of the North Carolina General Statutes, and must be
filed with the Office of Administrative Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714.
Unless such demand is made, this permit remains final and binding.
This permit is not transferable except after notifying the Division of Water Quality. The Division may modify and re-
issue, or revoke this permit. Please notice that this permit does not affect your legal obligation to obtain other permits
required by the Division of Water Quality, the Division of Land Resources, the Coastal Area Management Act, or other
federal or local governments.
If you have questions, or if we can be of further service, please contact Jim McKay at [e-mail] or call
[phone].
Sincerely,
ev
Charles Wakild, P.E.
Enclosure: NPDES Permit FINAL NC0025496
cc: Mooresville Regional Office, Surface Water Protection with Fact Sheet
EPA Region 4, Atlanta, with Fact Sheet and RPA - via email
NPDES Unit
Central Files
Aquatic Toxicology, Susan Meadows - via email
Larry Wright, Plant Supervisor/ ORC - via email: [e-mail]

Permit No. NC0025496
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,
City of Lincolnton
is hereby authorized to discharge wastewater from a facility located at
Lincolnton Wastewater Treatment Plant
550 West Highway 150 Bypass
south of Lincolnton
Lincoln County
to receiving waters designated as South Fork Catawba River 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.
This permit shall become effective May 1, 2012.
This permit and authorization to discharge shall expire at midnight on July 31, 2015
Signed this day March 30, 2012.
Charles Wakild, P.E., Director
Division of Water Quality
By Authority of
the Environmental Management Commission

Permit No. NC0025496
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby revoked,
and as of this 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.
City of Lincolnton
is hereby authorized to:
1. Continue to operate an existing 6.0 MGD wastewater treatment facility consisting of :
o Influent pump station
o influent filter/screen and washer,
o Vortex grit removal,
o four diffused aeration basins,
o Orbital oxidation ditch,
o two 100' diameter secondary clarifers,
o four anaerobic sludge digesters,
o two sludge storage tanks,
o three channel chlorination contact basin,
o a sodium hypochlorite chlorination system,
o a sodium bisulfite dechlorination system, and
o dissolved air flotation thickener,
The facility is located on NC Highway 150 bypass approximately 1 mile from the
intersection with NC Highway Business 321, south of Lincolnton, Lincoln County, and
2. Discharge from said treatment works at the location specified on the attached map into
the South Fork Catawba River, which is classified a WS-IV water in the Catawba River
Basin.

Permit No. NC0025496
Facility Information
35'2634 $ ib-Basist
81"1539'
F13NE
WS-Iv
Soath}ork CatawbaRiver

Permit No. NC0025496
A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is
authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as
specified below:
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Flow
6.0 MGD
_.
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Continuous
Recording
Influent or Effluent
BOD5 2
30.0 mg/L
45.0 mg/L
Daily
Composite
Influent and Effluent
Total Suspended Solids 2
30.0 mg/L
45.0 mg/L
Daily
Composite
Influent and Effluent
NH3 as N
3/Week
Composite
Effluent
Fecal Coliform
200/100 ml
400/100 ml
Daily
Grab
Effluent
pH 3
Daily
Grab
Effluent
Total Residual Chlorine 4
28 µg/L
Daily
Grab
Effluent
Temperature
Daily
Grab
Effluent
Conductivity
Daily
Grab
Effluent
Total Nitrogen •
(NOz + NO3 + TKN)
Monthly
Composite
Effluent
Total Phosphorus
Monthly
Composite
Effluent
Chronic Toxicity 5
Quarterly
Composite
Effluent
Total Phenolic Compounds
Monthly
Grab
Effluent
Total Silver b
Quarterly
Composite
Effluent
Total Antimony 7
52.0 µg/L
52.0 µg/L
Monthly
Composite
Effluent
Color 8
Monthly
Composite
Effluent
Color
(April 1 through October
31) 8
Monthly
Grab
Upstream &
Downstream
Effluent Pollutant Scan
Footnote 9.
Footnote 9.
Effluent
Footnotes on next page:

Permit No. NC0025496
Notes:
1. Upstream = at least 100 feet upstream from the outfall. Downstream = at least 300 feet downstream from
the outfall
2. The monthly average BOD5 and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
3. The pH shall not be less than 6.0 standardunits nor greater than 9.0 standard units.
4. TRC monitoring and limit requirements apply only if chlorine or a chlorine derivative is used in the
treatment process. The facility shall report all effluent TRC values reported by a NC certified laboratory,
including field certified. However, effluent values below 50 ug/ L will be treated as zero for compliance
purposes.
5. Chronic Toxicity (Ceriodaphnia) P/F @ 11% with testing in March, June, September and December (see A.
(3))
6. Monitoring for silver shall coincide with whole effluent toxicity monitoring (see note 5).
7.. Monitoring requirement and limitation for total antimony may be deleted upon written notification from the
permitting authority.
8. Color samples will be analyzed for ADMI color at natural pH. Samples will be analyzed by a state -certified
laboratory (see A. (2) Color Permitting Requirements).
9. The permittee shall perform three Effluent Pollutant Scans during the term of this permit [see A. (4)].
There shall be no discharge of floating solids or visible foam in other than trace amounts.
A. (2). COLOR MONITORING REQUIREMENT
The permittee will conduct color monitoring of instream stations (upstream, downstream) on a monthly basis during
summer season (April -October). Effluent samples will be collected monthly for color on a year-round basis. Color
samples will be analyzed for ADMI color at natural pH. Effluent samples will consist of 24-hour composites, while
instream samples will be collected as grabs. Samples will be analyzed by a state certified laboratory.
If data show that water quality standards for color are being violated by the discharge permitted by the terms of this
permit, then the Director may reopen this permit for the purpose of imposing additional requirements pursuant to 15A
NCAC 2H.0114. Alternatively, if future conditions change and color is no longer a component of the influent
wastestream, then the permittee may request a permit modification to remove color monitoring requirements.

Permit No. NC0025496
SUPPLEMENT TO EFFLUENT LIMITATIONS
AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS
A. (3). CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to Ceriodaphnia
dubia at an effluent concentration of 11 %.
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 March, June, September, and December. 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 Sciences Section 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 Section 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 include altemate 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 No. NC0025496
A. (4.) EFFLUENT POLLUTANT SCAN
The Permittee shall perform a total of three (3) Effluent Pollutant Scans for all parameters listed below.
One scan must be performed in each of the following years: 2012, 2013, and 2014. Analytical methods shall
be in accordance with 40 CFR Part 136 and shall be sufficiently sensitive to determine whether parameters
are present in concentrations greater than applicable standards and criteria. Samples should be collected
with one quarterly toxicity test each year, and must represent seasonal variation [i.e., do not sample in the
same quarter every year]. Unless otherwise indicated, metals shall be analyzed as "total recoverable."
Ammonia (as N)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate/Nitrite
Kjeldahl nitrogen
Oil and grease
Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (EPA Method 1631E)
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-trichloropheno l
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
Hexachlorobutadiene
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
Reporting. Test results shall be reported on DWQ Form -A MR PPA 1 (or in a form approved by the
Director) by December 31 ' of each designated sampling year. The report shall be submitted to the
following address: NC DENR / DWQ / Central Files, 1617 Mail Service Center, Raleigh, North
Carolina 27699-1617.

Permit No. NC0025496
A. (5.) PERMIT RE -OPENER: MERCURY TMDL
Pursuant to N.C. General Statutes Section 143-215.1 and the implementing rules found in Title 15A of
the North Carolina Administrative Code, Subchapter 02H, specifically, 15A NCAC 02H.0112(b)(1) and
02H.0114(a), and Part II, Sections B.12 and B. 13 of this Permit, the Director of DWQ may reopen this
permit and add or modify monitoring and Limits for Mercury in accordance with a Statewide Mercury
TMDL expected to be implemented in 2012.

Note to File:
Date: 3/5/2012
In a telephone call, Pamala Myers of EPA Region 4/ Atlanta stated that EPA has no comments regarding
the draft renewal for NC0025496, City of Lincolnton.

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0025496
Facility Information
Applicant/Facility Name:
City of Lincolnton/ Lincolnton WWTP
Applicant Address:
P.O. Box 617 Lincolnton, N.C. 28093-0617
Facility Address:
Highway 150 Bypass
Permitted Flow
6.0 MGD
Type of Waste:
69.6% Domestic and 30.4% industrial
Facility/Permit Status:
Renewal
Facility Classification
IV
County:
Lincoln
Miscellaneous
Receiving Stream:
South Fork Catawba
River
Regional Office:
Mooresville
Stream Classification:
WS-IV
State Grid/ USGS
Topo Quad:
F13NE/ Lincolnton
West
303(d) Listed?
Yes, due to
Statewide Hg
impairment
Permit Writer:
Jim McKay
Subbasin:
03-08-35
Date:
February 14, 2012
Drainage Area (mi2):
395
Summer 7Q10 (cfs)
77
Winter 7Q10 (cfs):
140
30Q2 (cfs)
190
Average Flow (cfs):
500
IWC (%):
11
Primary SIC Code:
4952
SUMMARY OF FACILITY INFORMATION AND WASTELOAD ALLOCATION
The City of Lincolnton has requested a permit renewal for the Lincolnton WWTP. Previous permit was
issued November 2005, and modified in March, 2007.to change some limits and monitoring requirements
for pesticides, total silver, TRC and antimony. The existing 6.0 MGD WWTP discharges into the South
Fork Catawba River, a class WS-IV water, in CTB35 subbasin. The discharge is three miles upstream of
the City of High Shoals drinking water intake. The plant serves a population of approximately 10,750
people. The plant appears to be well run; BOD removal rate is over 96% and TSS removal rate is over
95%.
The Lincolnton WWTP is an existing 6.0 MGD wastewater treatment facility. There were no changes
made to the plant since the last permit renewal. The treatment plant consists of:
o Influent pump station
o influent filter/screen and washer,
o Vortex grit removal,
o three screw pumps,
o a flow splitter box,
o four diffused aeration basins,
o Orbital oxidation ditch,
o two 100' diameter secondary clarifiers,
o four anaerobic sludge digesters,
o two sludge storage tanks,
o three channel chlorination contact basin,
o a sodium hypochlorite chlorination system,
o a sodium bisulfate dechlorination system,
o dissolved air flotation thickener,
o solids contact reactor, and
o a post aeration tank
Lincolnton WWTP Fact Sheet
NPDES Renewal
Page 1

Lincolnton currently has an active pretreatment program with Long Term Monitoring Program. There
are five non -categorical significant industrial users (SIU) and three categorical industrial users (CIUs)
discharging to the system. There is also a groundwater remediation facility that is not classified as a SIU.
The facility has an actual industrial flow of 1.02 MGD. The permitted industrial flow is 1.826 MGD. It
is recommended that the full pretreatment program for Lincolnton WWTP be continued in this upcoming
permitting cycle.
The industrial contributors for Lincolnton WWTP are as follows:
• Actavis Mid Atlantic— compounding/ formulating medications - 0.015 MGD - (process) — continuous
flow and 0.003 (non process) — intermittent flow. (Former ALPHARMA) CIU Category 439
Subpart D
• VT Leeby - Manufacture of paving equipment - 0.006 MGD Process flow and 0.001 MGD non
process flow. CIU Category 433.
• Sabo USA, Inc. - Manufacture of automotive seals - 0.003 MGD process - 0.001 MGD non process.
CIU Category 433.
• Cataler North America - Manufacture of catalytic converters - 0.011 MGD process flow - 0.0059
MGD non process flow. SIU
• MCMURRAY FABRICS — Manufacture and finish fabrics — 0.587 MGD — (process) — continuous
flow and 0.005 (non process) — intermittent flow. SIU
• MOHICAN MILLS — fabric manufacturing and lace products — 0.567 MGD (process) —
continuous flow and 0.015 (non process) — intermittent flow. SIU
• SOUTH FORK INDUSTRIES — fabric manufacturing and dyeing — 0.414 MGD — continuous flow
and 0.002 (non process) — intermittent flow. SIU
• TEXTILE PIECE DYEING COMPANY, INC. — fabric manufacturing and dyeing — 0.187 MGD
(process) — continuous flow and 0.0012 (non process) — intermittent flow. SIU
• AT & T TELECOMMUNICATIONS — remediated groundwater — 0.0023 MGD — continuous flow.
Groundwater remediation not a SIU.
Existing Effluent Limits a,, 6.0 MGD
Qw = 6.0 MGD
BODS = 30 mg/1
NH3 = monitor
TSS = 30 mg/1
Fecal Coliform = 200/100m1
TRC = 28 µg/ L (daily max.)
pH=6.0-9.OSU
Cyanide = 22 µg /L (daily max.)
Phenols = 21 µg /L (daily max.)
Antimony = 52 µg /L (daily max.)
2/ Month monitoring for copper and zinc
Monthly monitoring for color
Monthly monitoring for TP and TN
Chronic Toxicity P/F @ 11%; March June September December
Instream monitoring for color upstream and downstream of the discharge point is required per the color
monitoring special condition.
Lincolnton WWTP Fact Sheet
NPDES Renewal
Page 2

Lincolnton Color Data (Units-ADMI
Date
Upstream
Effluent
Downstream
April 21, 2009
53.6
85.4
48.9
May 19, 2009
44.7
99.1
46.2
June 16, 2009
190.4
81.4
260.9
July 21, 2009
93.2
89.6
137.1
August 18, 2009
52.9
81.3
57.1
September 15, 2009
55.8
67.0
53.4
October 15, 2009
55.8
69.1
53.4
April 19, 2010
64.6
99.3
31.1
May 27, 2010
47.4
150.2
48.7
June 21, 2010
65.1
133.8
74.8
July 27, 2010
87.6
124.0
74.8
August 24, 2010
65.4
77.7
71.7
September 28, 2010
80.8
89.0
82.3
October 19, 2010
42.2
104.5
35.6
April 26, 2011
32.7
67.5
28.7
May 26, 2011
66.6
127.4
56.8
June 27, 2011
33.7
87.6
39.4
July 26, 2011
40.2
82.1
40.9
August 22, 2011
60.1
111.5
56.7
September 19, 2011
42.9
110.9
45.1
October 24, 2011
37.9
117.3
33.2
REASONABLE POTENTIAL ANALYSIS:
Analysis was conducted using discharge monitoring reports from January 2009 through October 2011. In
addition, Priority Pollutant Analysis data and LTMP data were also reviewed. The parameters that were
analyzed were antimony, arsenic, cadmium, chromium, copper, cyanide, lead, mercury, molybdenum,
nickel, selenium, silver, zinc, and phenols. See attached RPA results.
• The analysis of the following parameters did not show reasonable potential to exceed either the acute
or the chronic allowable concentrations. The maximum predicted concentrations were less than the
allowables and therefore no limit or monitoring will be required. These parameters will continue to
be monitored quarterly in the Lincolnton's Long Term Monitoring Plan (LTMP): Arsenic, cadmium,
chromium, copper, cyanide, lead, mercury, molybdenum, nickel, selenium, and zinc. Copper,
cyanide, and zinc monitoring will be removed from the permit, along with the cyanide limit.
• Total Phenolic Compounds did not show reasonable potential to exceed allowable concentrations,
but since the receiving waters are classified WS IV, monitoring will be retained, but changed to
Monthly from Weekly. The limit will be removed from the permit.
• The analysis for silver did show reasonable potential to exceed the NC action level. Per NCDWQ
procedure, no limit will be recommended. In addition there are no chronic toxicity problems. It is
recommended that Quarterly monitoring in conjunction with Tox Testing be continued in the permit
for silver.
Lincolnton WWTP Fact Sheet
NPDES Renewal
Page 4

RECEIVING STREAM INFORMATION:
Drainage Area = 395 sq. mi.
QA=500cfs
S7Q10 = 77 cfs
W7Q10= 140cfs
30Q2 = 190 cfs
The South Fork Catawba River Stream Index Number 11-129-(3.7) is not listed on North Carolina's 2010
303(d) list of impaired streams. The South Fork Catawba River is listed as impaired for turbidity both
upstream and downstream of this section; there is no monitoring data for this section, so it is not listed.
However all streams in North Carolina are considered impaired for mercury.
The use support rating for the South Fork Catawba River (where the Lincolnton discharge is located),
from the City of Lincolnton water supply intake to a point 0.3 miles upstream of Muddy Creek, is
supporting for aquatic life and recreation. Stream Index Number 11-129-(3.7)
The biological assessment of the South Fork Catawba River at NC 27 (Lincoln County) in September
1994 was Good. The biological assessment was Good -Fair (August 1997) at the next downstream station
at NC 7, Gaston County. These are the most recent ratings available.
TOXICITY TESTING:
Current Requirement: Chronic Toxicity P/F @ 11 %; March June September December
The Lincolnton WWTP overall has a good toxicity testing record. All toxicity tests have been passed
from March, 2007 to the present.
Recommendation: Renewal of existing chronic toxicity test @ 11%.
COMPLIANCE SUMMARY:
Through October 2011, Avg. Qw = 2.4 MGD (approximately 40% of capacity), BOD5 = 8.1 mg/L, TSS
= 7.4 mg/L, and effluent color averaged 103.2 ADMI. One antimony limit violation in April
In 2010, Avg. Qw = 2.5 MGD (approximately 41.7% of capacity), BOD5 = 8.2 mg/L, TSS=9.1 mg/L,
and effluent Color averaged 99.7 ADMI.
In 2009, Avg. Qw = 2.4 MGD (approximately 40% of capacity), BOD5 =13.3 mg/L, TSS=9.5 mg/L, and
effluent Color averaged 76.4 ADMI.
INSTREAM MONITORING:
Based on the results of an October 2001 public hearing regarding color dischargers to streams in the
Catawba River Basin, The City of Lincolnton was required to conduct instream color monitoring above
and below its discharge point. Data submitted in the October 2004 color reduction study indicate that
instream color is lower than in the previous years. Regional Office staff also submitted visual evidence
of the improvements to the effluent and its impact in the receiving stream. 2009 data shows downstream
color in the range of 46.2 to 260.9 ADMI. 2010 data shows downstream color in the range of 31.1 to
82.3 ADMI. From January through October 2011, data is in the range of 28.7 to 56.8 ADMI. See
following chart.
Lincolnton WWTP Fact Sheet
NPDES Renewal
Page 3

• Recommend that mercury continue to be monitored Quarterly via low level Method 1631E in the
pretreatment LTMP.
• Antimony did show Reasonable Potential to exceed the chronic allowable concentration. Since this
is chronic, the existing 52 µg /L Daily Maximum acute limit will be retained and a new monthly
average chronic limit of 52.0 µg /L will be added. Monitoring will remain Monthly.
PROPOSED CHANGES:
The following modifications have been made to the permit:
• The cyanide limit of 22 µg/ L and monitoring will be removed from the permit. Cyanide will
continue monitoring via the LTMP.
• The Phenols limit of 21 pig/ L will be removed from the permit. Monitoring will be changed to
Monthly as Total Phenolic Compounds based on the RPA.
• Copper and Zinc monitoring will be removed from the permit based on results of the reasonable
potential analysis which showed no RP. Copper and zinc will continue monitoring via the LTMP.
• The Antimony Daily Maximum limit will be retained. A 52.0 µg/ L Monthly Average limit will
be added as a chronic limit so that there is a monthly average limit and a daily maximum limit.
• The permittee will continue to conduct color monitoring of instream stations (upstream,
downstream) on a monthly basis during summer season (April -October). Effluent samples will
continue to be collected monthly for color on a year-round basis. Color samples will be analyzed
for ADMI color at natural pH. Effluent samples will consist of 24-hour composites, while
instream samples will be collected as grabs. Samples will be analyzed by a state certified
laboratory.
• The requirement for an annual effluent scan will be modified to require three scans during a 5
year permit cycle.
• The TRC footnote has been updated to the Division's current language. Special Condition A.(2)
regarding TRC compliance schedule has been removed, the remaining conditions have been
renumbered accordingly.
• A Mercury TMDL Re -Opener Clause has been added to the permit in anticipation of a
Statewide Mercury TMDL expected during 2012.
If data show that water quality standards for color are being violated by the discharge permitted
by the termsof this permit, then the Director may reopen this permit for the purpose of imposing
additional requirements pursuant to 15A NCAC 2H.0114. Alternatively, if future conditions
change and color is no longer a component of the influent wastestream, then the permittee may
request a permit modification to remove color permit requirements.
ALL OTHER EXISTING PERMIT LIMITS AND MONITORING REQUIREMENTS WILL
REMAIN THE SAME.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: 01/18/2012 (est.)
Permit Scheduled to Issue: 03/3/2012 (est.)
Projected Effective Date of Permit: 04/01/2012 (est.)
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please contact Jim
McKay at [phone], or by email at [e-mail].
NAME:
REGIONAL OFFICE COMMENT:
DATE: 29)Z
Lincolnton WWTP Fact Sheet
NPDES Renewal
Page 5

Linconton WWTP
NC0025496
REASONABLE POTENTIAL ANALYSIS
Qw (MGD) = 6.00
1 Q 10S (cfs) = 62.97
7Q 1 OS (cfs) = 77.00
7QIOW (cfs)= 140.00
30Q2 (cfs) = 190.00
Avg. Stream Flow, QA (cfs) = 500.00
Receiving Stream: South Fork Carwaba River
WWTP/WTP Class: IV
IWC @ 1Q1OS = 12.87%
IWC @ 7Q 1 OS = 10.78%
IWC @ 7QIOW = 6.23%
IWC @ 30Q2 = 4.67%
IWC @ QA = 1.83%
Stream Class: WS-IV
Outfall 'I
Qw=6MGD
PARAMETER
TYPE
(1)
STANDARDS & CRITERIA (2) -
-J
a
co
i-
Z
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS /
Chronic
Applied
Standard
'/a FAV /
Acute
ri
# Det. Max Pred Allowable Cw
Cw
Arsenic
Arsenic
C
C
50
.10
FW(7Q10s)
HH/WS(Qavg)
ug/L
ug/L
33
33
11
11
2.6
2.6
Acute: NO WQS
_ __ ______ _ __
Chronic: 463.8
N_ovalue >AllowableCw __
Chronic: 546.4
No value > Allowable Cw
___________________________.
No RP, No Limit. LTMP.
____________ _
No RP, No Limit. LTMP.
Cadmium
NC
2
FW(7Q10s)
15
ug/L
33
0
0.5
Acute: 116.6
__ __ _____ ____
Chronic: 18.6
No value > Allowable Cw
No RP, No Limit. LTMP.
___________________________,
No RP, No Limit. LTMP.
Total Phenolic Compounds
NC
300
A(30Q2)
ug/L
143
95
25.1
Acute: NO WQS
_ ____----- _ _
Chronic: 6,424.0
No value > Allowable Cw
__________--- _______________
No RP, No Limit. Retain Monitoring, change to
Monthly.
Chromium
NC
50
FW(7Q10s)
1022
ug/L
33
33
30.2
Acute: 7,940.9
__ __ ______ _ __
Chronic: 463.8
No value > Allowable Cw
No RP, No Limit. LTMP.
__________________________
No RP, No Limit. LTMP.
Copper (AL)
NC
7
FW(7Q10s)
7
ug/L
66
59
26
Acute: 56.7
_ ________ ____
Chronic: 64.9
No value > Allowable Cw
No RP, No Limit. Remove from permit, leave in
__________________________,
No RP, No Limit. Remove from permit, leave in
LTMP.
Cyanide
NC
5
FW(7Q10s)
22
10
ug/L
143
58
19.0
Acute: 170.9
_
C_onc_: ____464___
No value> Allowable Cw
No RP, No Limit. Remove from permit, leave in
LTMP_
NoRP,_o__m_. Remove _fro_m__m_t,_e_a_e _i—__.
LTMP.
Lead
NC
25
FW(7Q10s)
33.8
ug/L
33
15
3.8
Acute: 262.E
Chronic: 231.9
No value > Allowable Cw
No RP, No Limit. LTMP.
No RP, No Limit. LTMP.
Mercury
NC
12
FW(7Q10s)
0.5
ng/L
33
33
19.1
Acute: NO WQS
Chronic: 111.3
No value > Allowable Cw
No RP, No Limit. LTMP.
Molybdenum
NC
160
WS(7Q10s)
ug/L
33
31
190.3
Acute: NO WQS
_ _________ _ __
Chronic: 1,484.2
No value > Allowable Cw
____________________________
No RP, No Limit. LTMP.
Page 1 of 2
NC0025496- Lincolnton Ori, rpa
1/9/2012

Linconton WWTP
REASONABLE POTENTIAL ANALYSIS
Outfall 1
Qw=6MGD
Nickel
NC
25
WS(7Q10s)
261
ug/L
33
13
36.4
Acute: 2,028.0
_ Chro_______ __
nic: 231.9
No value > Allowable Cw
No RP, No Limit. LTMP.
___________________________
No RP, No Limit. LTMP.
Selenium
NC
5
FW(7Q10s)
56
ug/L
33
8
6.7
Acute: 435.1
_ _---- ___ ____
Chronic: 46.4
No value > Allowable Cw
No RP, No Limit. LTMP.
_--- __--- --- ____—________-_-
No RP, No Limit. LTMP.
Silver (AL)
NC
0.06
FW(7Q 10s)
1.23
ug/L
33
2
1.656
Acute: 9.557
_ _ _ . _ _ _ _ _
Chronic: 0.557
2 value(s) > Allowable Cw
No RP, Predicted Max < 50% of Allowable Cw - No
Monitoring required _ _ - _ - _ _ _ _ _ _ _ - _ -
RP for AL(Cu,Zn,Ag,Fe,CI) - retain Quarterly
Monitoring in conjunction with TOX Test .
Zinc(AL)
NC
50
FW(7Q10s)
67
ug/L
66
65
116.3
Acute: 520.6
_ __ -_-__ __
Chronic: 463.8
No value > Allowable Cw
No RP, No Limit. Remove from permit. leave in
LTMP____-_________'_-___-_-_
No RP, No Limit. Remove from permit, leave in
LTMP.
Antimony
NC
5.6
WS(7Q10s)
ug/L
34
34
102.60
Acute: NO WQS
Chronic: 51.95
2 value(s) > Allowable Cw
RP for non -AL - retain Monthly Monitoring with Limit.
Chronic, so monthly avg. limit of 52 ug/ L.
NC0025496- Lincointon Ori, rpa •
Page 2 of 2 1/9/2012

Freshwater RPA
QREQUIRED DATA ENTRY
Table 1. Project Information
❑ CHECK if HQW or ORW only
Facility Name
WWTP/WTP Grade
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q10w (cfs)
30Q2 (cfs)
QA (cfs)
1Q10s (cfs)
Data Source(s)
❑ CHECK for MODEL
Linconton WWTP
IV
NC0025496
001
6.0
South Fork Carwaba River
WS-IV
77.0
140.0
190.0
500.0
62.97._,
1/2009 - 9/2011
Follow directions for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Table 2. Parameters of Concern
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Par16
Par17
Par18
Par19
Par20
Par21
Par22
Name
Type Chronic Modifier Acute
PQL Units
Arsenic
C
50
FW
ug/L
Arsenic
C
10
HH/WS
ug/L
Beryllium
NC
6.5
FW
ug/L
Cadmium
NC
2
FW
15
ug/L
Chlorides (AL)
NC
230
FW
mglL
Chlorinated Phenolic Compounds
NC
1
A
ug/L
Total Phenolic Compounds
NC
300
A
ug/L
Chromium
NC
50
FW
1,022
ug/L
Copper (AL)
NC
7
FW
7.3
ug/L
Cyanide
NC
5
FW
22
10
ug/L
Fluoride
NC
1,800
FW
ug/L
Lead
NC
25
FW
33.8
ug/L
Mercury
NC
12
FW
0.5
ng/I_
Molybdenum
NC
160
WS
ug/L
Nickel
NC
25
WS
261
ug/L
Selenium
NC
5
FW
56
ug/L
Silver (AL)
NC
0.06
FW
1.23
ug/L
Zinc (AL)
NC
50
FW
67
ug/L
Antimony
NC
5.6
WS
uglL
NC0025496- Lincolnton Ori, input
1/9/2012

REASONABLE POTENTIAL ANALYSIS
Arsenic - FW Standard
Date Data BDL=112DL Results
1 9/14/2011 1.2 1.2 Std Dev. 0.3343
2 8/17/2011 1.2 1.2 Mean 0.7212
3 7/20/2011 < 1 0.5 C.V. 0.4635
4 6/15/2011 < 1 0.5 n 33
5 5/18/2011 1 1
6 4/6/2011 < 1 0.5 Mull Factor = 1.70
7 3/16/2011 < 1 0.5 Max. Value 1.5 ug/L
8 2/9/2011 < 1 0.5 Max. Pred Cw 2.6 ug/L
9 1/12/2011 < 1 0.5
10 12/8/2010 < 1 0.5
11 11/10/2010 < 1 0.5
12 10/6/2010 < 1 0.5
13 9/22/2010 < 1 0.5
14 8/4/2010 1.1 1.1
15 7/21/2010 1.5 1.5
16 6/9/2010 1.2 1.2
17 5/5/2010 < 1 0.5
18 4/7/2010 < 1 0.5
19 3/24/2010 < 1 0.5
20 2/17/2010 < 1 0.5
21 1/20/2010 < 1 0.5
22 12/9/2009 < 1 0.5
23 11/4/2009 < 1 0.5
24 10R/2010 < 1 0.5
25 9/23/2009 1 1
26 8/5/2009 < 1 0.5
27 7/22/2009 < 1 0.5
28 6/24/2009 1 1
29 5/6/2009 1.1 1.1
30 4/15/2009 1 1
31 3/18/2009 1.5 1.5
32 2/4/2009 < 1 0.5
33 1/21/2009 < 1 0.5
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
70
SPECIAL -
Values" WITH
"COPY"
NC0025496- Lincolnton Ori, data
- 1 - 1/9/2012

REASONABLE POTENTIAL ANALYSIS
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125.
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
2 Al
•
-2-
NC0025496- Lincolnton Ori, data
1/9/2012

REASONABLE POTENTIAL ANALYSIS
Cadmium
Date Data BDL=1/2DL Results
9/14/2011 < 1 0.5 Std Dev.
8/17/2011 < 1 0.5 Mean
7/20/2011 < 1 0.5 C.V.
6/15/2011 < 1 0.5 n
5/18/2011 < 1 0.5
4/6/2011 < 1 0.5 Mull Factor =
3/16/2011 < 1 0.5 Max. Value
2/9/2011 < 1 0.5 Max. Pred Cw
1/12/2011 < 1 0.5
12/8/2010 < 1 0.5
11/10/2010 < 1 0.5
10/6/2010 < 1 0.5
9/22/2010 < 1 0.5
8/4/2010 < 1 0.5
7/21/2010 < 1 0.5
6/9/2010 < 1 0.5
5/5/2010 < 1 0.5
4/7/2010 < 1 0.5
3/24/2010 < 1 0.5
2/17/2010 < 1 0.5
1/20/2010 < 1 0.5
12/9/2009 < 1 0.5
11/4/2009 < 1 0.5
10/7/2010 < 1 0.5
9/23/2009 < 1 0.5
8/5/2099 < 1 0.5
7/22/2009 < 1 0.5
6/24/2009 < 1 0.5
5/6/2009 < 1 0.5
4/15/2009 < 1 0.5
3/18/2009 < 1 0.5
2/4/2009 < 1 0.5
1/21/2009 < 1 0.5
0.0000
0.5000
0.0000
33
1.00
0.5 ug/L
0.5 ug/L
Total Phenolic Compounds
Date Data BDL=1/2DL Results
1 9/1/2011 7 7 Std Dev. 4.4662
2 9/7/2011 9 9 Mean 7.0070
3 9/14/2011 11 11 C.V. 0.6374
4 9/21/2011 < 10 5 n 143
5 9/28/2011 < 10 5
6 8/2/2011 8 8 Mull Factor =
7 8/10/2011 9 9 Max. Value
8 8/17/2011 < 10 5 Max. Pred Cw
9 8/24/2011 7 7
10 7/6/2011 < 5 2.5
11 7/13/2011 _ 6 6
12 7/20/2011 5 5
13 7/27/2011 14 14
14 6/1/2011 16 16
15 6/8/2011 < 5 2.5
16 6/15/2011 8 8
17 6/23/2011 12 12
18 6/27/2011 6 6
19 5/4/2011 6 6
20 5/11/2011 16 16
21 5/18/2011 10 10
22 5/26/2011. 18 18
23 4/6/2011 15 15
24 4/13/2011 17 17
25 4/20/2011: 8 8
26 4/27/2011'' 12 12
27 3/2/2011 . 7 7
28 3/9/2011 '.: 14 14
29 3/16/2011 11 11
30 3/23/2011 5 5
31 3/30/2011. 6 6
32 2/2/2011 7 7
33 2/9/2011.. 17 17
34 2/16/2011 16 16
35 2/23/2011 ,. 5 5
36 1/5/2011 12 12
37 1/12/2011 10 10
38 1/19/2011'. 5 5
39 1/26/2011 15 15
40 12/1/2010 8 8
41 12/8/2010 19 19
42 12/15/2010 15 15
43 12/20/2010 8 8
44 12/28/2010< 5 2.5
45 11/3/2010 • 8 8
46 11/10/2010 • 19 19
47 11/17/2010' 11 11
48 11/24/2010 11 11
49 10/6/2010 9 9
50 10/13/2010 . 9 9
51 10/20/2010 • 7 7
52 10/27/2010 9 9
53 9/1/2010 10 10
54 9/8/2010 6 6
55 9/15/2010 11 11
56 9/22/2010 < 5 2.5
57 9/29/2010 5 5
58 8/4/2010 < 5 2.5
59 8/11/2010 < 5 2.5
60 8/18/2010 < 5 2.5
61 8/25/2010 < 5 2.5
62 7/7/2010 8 8
63 7/14/2010 < 5 2.5
64 7/21/2010 19 19
65 7/28/2010 15 15
66 6/2/2010 8 8
67 6/9/2010 13 13
68 6/16/2010 7 7
69 6/23/2010 6 6
70 6/30/2010 8 8
SPECIAL -
Values" WITH
"COPY"
1.32
19.0 ug/L
25.1 ug/L
NC0025496- Lincolnton Ori, data
- 3 - 1/9/2012

REASONABLE POTENTIAL ANALYSIS
71 5/5/2010 < 5 2.5
72 5/12/2010 < 5 2.5
73 5/19/2010 < 5 2.5
74 5/26/2010 9 9
75 4/7/2010 < 5 2.5
76 4/21/2010 < 5 2.5
77 4/22/2010 < 5 2.5
78 4/28/2010 < 5 2.5
79 3/3/2010 < 5 2.5
80 3/10/2010 < 5 2.5
81 3/17/2010 < 5 2.5
82 3/24/2010 < 5 2.5
83 3/31/2010 < 5 2.5
84 2/3/2010 6 6
85 2/10/2010 < 5 2.5
86 2/17/2010 < 5 2.5
87 2/24/2010 8 8
88 1/6/2010 < 5 2.5
89 1/13/2010 < 5 2.5
90 1/20/2010 < 5 2.5
91 1/27/2010 < 5 2.5
92 12/2/2009 < 5 2.5
93 12/9/2009 5.5 5.5
94 12/16/2009 < 5 2.5
95 12/23/2009 9 9
96 12/29/2009 5 5
97 11/4/2009 < 5 2.5
98 11/10/2009 < 5 2.5
99 11/18/2009 5 5
100 11/25/2009 < 5 2.5
101 10/7/2009 s 6 6
102 10/14/2009 5 5
103 10/21/2009 < 5 2.5
104 10/28/2009 < 5 2.5
105 9/2/2009 5 5
106 9/9/2009 < 5 2.5
107 9/16/2009 19 19
108 9/23/2009 < 5 2.5
109 9/30/2009 < 5 2.5
110 8/5/2009 8 8
111 8/12/2009 9 9
112 8/19/2009 6 6
113 8/26/2009 < 5 2.5
114 7/1/2009 < 5 2.5
115 7/8/2009 7 7
116 7/15/2009 6 6
117 7/22/2009 6 6
118 7/29/2009 < 5 2.5
119 6/3/2009 < 5 2.5
120 6/10/2009 5 5
121 6/17/2009 < 5 2.5
122 6/24/2009 < 5 2.5
123 5/6/2009 < 5 2.5
124 5/13/2009 7 7
125 5/20/2009 6 6
126 5/27/2009 10 10
127 4/1/2009 9 9
128 4/8/2009 7 7
129 4/15/2009 < 5 2.5
130 4/22/2009 9 9
131 4/29/2009 7 7
132 3/4/2009 6 6
133 3/11/2009 11 11
134 3/18/2009 6 6
135 3/25/2009 6 6
136 2/4/2009 6 6
137 2/11/2009 10 10
138 2/18/2009 7 7
139 2/25/2009 13 13
140 1/6/2009 5 5
141 1/14/2009 5 5
142 1 /21 /2009 10 10
143 1/28/2009 6 6
144
- 4 -
NC0025496- Lincolnton Ori, data
1/9/2012

REASONABLE POTENTIAL ANALYSIS
Chromium
Date Data BDL=II2DL Results
1 9/14/2011 7.1 7.1 Std Dev.
2 8/17/2011 8.7 8.7 Mean
3 7/20/2011 11 11 C.V.
4 6/15/2011 16 16 n
5 5/18/2011 13 13
6 4/6/2011 12 12 MuIt Factor =
7 3/16/2011 12 12 Max. Value
8 2/9/2011 16 16 Max. Pred Cw
9 1/12/2011 4.7 4.7
10 12/8/2010 15 15
11 11/10/2010 12 12
12 10/6/2010 17 17
13 9/22/2010 12 12
14 8/4/2010 8.5 8.5
15 7/21/2010 15 15
16 6/9/2010 12 12
17 5/5/2010 12 12
18 4/7/2010 21 21
19 3/24/2010 10 10
20 2/17/2010 12 12
21 1/20/2010 9.8 9.8
22 12/9/2009 13 13
23 11/4/2009 7.1 7.1
24 10/7/2010 15 15
25 9/23/2009 14 14
26 8/5/2189 18 18
27 7/22/2009 21 21
28 6/24/2009 17 17
29 5/6/2009 17 17
30 4/15/2009 6.9 6.9
31 3/18/2009 13 13
32 2/4/2009 9.3 9.3
33 1/21/2009 19 19
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
70
SPECIAL -
Values" WITH
"COPY"
4.0554
12.9424
0.3133
33
1.44
21.0 ug/L
30.2 ug/L
Copper (AL)
SPECIAL -
Values" WITH
"COPY"
Date Data BDL=1/2DL Results
1 9/14/2011 8.4 8.4 Std Dev. 3.1370
2 9/1/2011 7.9 7.9 Mean 6.9621
3 8/17/2011 8.7 8.7 C.V. 0.4506
4 8/3/2011 8 8 n 66
5 7/20/2011 6.8 6,8
6 7/6/2011 < 5 2.5 Mult Factor= 1.43
7 6/15/2011 8.2 8.2 Max. Value 18.0 ug/L
8 6/1/2011 6.2 6.2 Max. Pred Cw 25.7 ug/L
9 5/18/2011 7.2 7.2
10 5/4/2011 7.9 7.9
11 4/6/2011 7.9 7.9
12 4/20/2011 13 13
13 3/16/2011 5.8 5.8
14 3/2/2011 6.2 6.2
15 2/9/2011 7.8 7.8
16 2/24/2011 7.2 7.2
17 1/12/2011 7.1 7.1
18 1/26/2011 8.5 8.5
19 12/8/2010 9.6 9.6
20 12/22/2010 5.5 5.5
21 11/10/2010 7 7
22 11/24/2010 8.5 8.5
23 10/6/2010 5.3 5.3
24 10/27/2010 5.1 5.1
25 9/22/2010 18 18
26 9/8/2010 < 5 2.5
27 8/4/2010 < 5 2.5
28 8/18/2010 6.4 6.4
29 7/21/2010 6.2 6'.2
30 7/7/2010 6.6 6.6
31 6/9/2010 < 5 2.5
32 6/23/2010 < 5 2.5
33 5/5/2010 7 7
34 5/19/2010 < 5 2.5
35 4/7/2010 7.3 7.3
36 4/21/2010 6.5 6.5
37 3/24/2010 6.1 6.1
38 3/11/2010 6.7 6.7
39 2/17/2010 7.2 7.2
40 2/3/2010 7.7 7.7
41 1/20/2010 7.5 7.5
42 1/6/2010 15 15
43 12/9/2009 6.7 6.7
44 12/23/2009 5.5 5.5
45 11/4/2009 3.4 3.4
46 11/18/2009 < 5 2.5
47 10/7/2010 4.5 4.5
48 10/21/2010 4.6 4.6
49 9/23/2009 4.9 4.9
50 9/9/2009 4.4 4.4
51 8/5/2279 5.5 5.5
52 8/19/2009 4.1 4.1
53 7/22/2009 6.5 6.5
54 7/1/2009 3.6 3.6
55 6/24/2009 5.6 5.6
56 6/3/2009 7.9 7.9
57 5/6/2009 8.7 8.7
58 5/20/2009 4.9 4.9
59 4/15/2009 14 14
60 4/1/2009 7.8 7.8
61 3/18/2009 7.8 7.8
62 3/4/2009 6 6
63 2/4/2009 15 15
64 2/18/2009 14 14
65 1/21/2009 8.9 8.9
66 1/21/2009 5.7 5.7
67 Y
68
69 lit
70 ;e
NC0025496- Lincolnton Ori. data
-5- 1/9/2012

REASONABLE POTENTIAL ANALYS S
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
-6-
NC0025496- Lincolnton Ori, data
1/9/2012

REASONABLE POTENTIAL ANALYSIS
Cyanide
Date Data BDL=1/2DL Results
1 9/1/2011 5 5 Std Dev.
2 9/7/2011 < 5 5 Mean
3 9/14/2011 5 5 C.V.
4 9/21/2011 < 5 5 n
5 9/28/2011 < 5 5
6 8/2/2011 < 5 5 Mult Factor =
7 8/10/2011 < 5 5 Max. Value
8 8/17/2011 < 5 5 Max. Pred Cw
9 8/24/2011 < 5 5
10 7/6/2011 < 5 5
11 7/13/2011 < 5 5
12 7/20/2011 < 5 5
13 7/27/2011 < 5 5
14 6/1/2011 < 5 5
15 6/8/2011 < 5 5
16 6/15/2011 < 5 5
17 6/22/2011 < 5 5
18 6/27/2011 < 5 5
19 5/4/2011 < 5 5
20 5/11/2011 < 5 5
21 5/18/2011 < 5 5
22 5/25/2011 < 5 5
23 4/6/2011 5 5
24 4/13/2011 6 5
25 4/20/2011 13 13
26 4/27/2011 < 5 5
27 3/2/2011 < 5 5
28 3/9/2011 < 5 5
29 3/16/2011 < 5 5
30 3/23/2011 < 5 5
31 3/30/2011 8 5
32 2/2/2011 < 5 5
33 2/9/2011 < 5 5
34 2/16/2011 < 5 5
35 2/23/2011 < 5 5
36 1/5/2011 < 5 5
37 1/12/2011 < 5 5
38 1/19/2011 < 5 5
39 1/26/2011 < 5 5
40 12/1/2010 < 5 5
41 12/8/2010 < 5 5
42 12/15/2010 < 5 5
43 12/20/2010 6 5
44 12/28/2010 < 5 5
45 11/3/2010 < .5 5
46 11/10/2010 < 5 5
47 11/17/2010 < 5 5
48 11/24/2010 < 5 5
49 10/6/2010 5 5
50 10/13/2010 9 5
51 10/20/2010 5 5
52 10/27/2010 < 5 5
53 9/1/2010 < 5 5
54 9/8/2010 < 5 5
55 9/15/2010 < 5 5
56 9/22/2010 < 5 5
57 9/29/2010 6 5
58 8/4/2010 < 5 5
59 8/11/2010 < 5 5
60 8/18/2010 < 5 5
61 8/25/2010 < 5 5
62 7/7/2010 < 5 5
63 7/14/2010 < 5 5
64 7/21/2010 < 5 5
65 7/28/2010 < 5 5
66 6/2/2010 < 5 5
67 6/9/2010 11 11
68 6/16/2010 < 5 5
69 6/23/2010 14 14
70 6/30/2010 9 5
SPECIAL -
Values" WITH
"COPY"
2.1272
5.65
0.3765
143
Lead
1.19
16.0 ug/L
19.0 ug/L
Date Data BDL=1/2DL Results
9/14/2011 < 1 0.5 Std Dev. 0.4649
8/17/2011 1.1 1.1 Mean 0.8636
7/20/2011 1.2 1.2 C.V. 0.5383
6/15/2011 1.1 1.1 n 33
5/18/2011 1.1 1.1
4/6/2011 2.1 2.1 Mult Factor = 1.83
3/16/2011 < 1 0.5 Max. Value 2.1 ug/L
2/9/2011 < 1 0.5 Max. Pred Cw 3.8 ug/L
SPECIAL -
Values" WITH
"COPY
1/12/2011 < 1 0.5
12/8/2010 < 1 0.5
11/10/2010 < 1 0.5
10/6/2010 < 1 0.5
9/22/2010 1.1 1.1
8/4/2010 < 1 0.5
7/21/2010 < 1 0.5
6/9/2010 < 1 0.5
5/5/2010 1.1 1.1
4/7/2010 1.6 1.6
3/24/2010 1.5 1.5
2/17/2010 < 1 0.5
1/20/2010 1.3 1.3
12/9/2009 < 1 0.5
11/4/2009 < 1 0.5
10/7/2010 1.1 1.1
9/23/2009 1.1 1.1
8/5/2369 1 1
7/22/2009 < 1 0.5
6/24/2009 2 2
5/6/2009 1.1 1.1
4/15/2009 < 1 0.5
3/18/2009 < 1 0.5
2/4/2009 < 1 0.5
1/21/2009 < 1 0.5
- 7 -
NC0025496- Lincolnton Ori, data
1 /9/2012

REASONABLE POTENTIAL ANALYSIS
71 5/5/2010 8 5
72 5/12/2010 < 5 5
73 5/19/2010 14 14
74 5/26/2010 < 5 5
75 4/7/2010 12 12
76 4/14/2010 6 5
77 4/21/2010 13 13
78 4/28/2010 9 5
79 3/3/2010 < 5 5
80 3/10/2010 < 5 5
81 3/17/2010 5 5
82 3/24/2010 5 5
83 3/31/2010 11 11
84 2/3/2010 5 5
85 2/10/2010 9 5
86 2/17/2010 11 11
87 2/24/2010 16 16
88 1/6/2010 6 5
89 1/13/2010 7 5
90 1/20/2010 8 5
91 1/27/2010 10 10
92 12/2/2009 < 5 5
93 12/9/2009 < 5 5
94 12/16/2009 10 10
95 12/23/2009 < 5 5
96 12/30/2009 < 5 5
97 11/4/2009 9 5
98 11/10/2009 5 5
99 11/17/2009 < 5 5
100 11/24/2009 < 5 5
101 10/7/2009 8 5
102 10/14/2010 7 5
103 10/21/2010 < 5 5
104 10/28/2010 < 5 5
105 9/2/2009 5 5
106 9/9/2009 < 5 5
107 9/16/2009 5 5
108 9/23/2009 11 11
109 9/30/2009 7 5
110 8/5/2009 8 5
111 8/12/2009 6 5
112 8/19/2009 5 5
113 8/26/2009 < 5 5
114 7/1/2009 < 5 5
115 7/8/2009 < 5 5
116 7/15/2009 < 5 5
117 7/22/2009 < 5 5
118 7/29/2009 5 5
119 6/3/2009 5 5
120 6/10/2009 < 5 5
121 6/17/2009 < 5 5
122 6/24/2009 < 5 5
123 5/6/2009 6 5
124 5/13/2009 9 5
125 5/20/2009 8 5
126 5/27/2009 < 5 5
127 4/1/2009 5 5
128 4/8/2009 < 5 5
129 4/15/2009 < 5 5
130 4/22/2009 6 5
131 4/29/2009 6 5
132 3/4/2009 < 5 5
133 3/11/2009 < 5 5
134 3/18/2009 < 5 5
135 3/25/2009 < 5 5
136 2/4/2009 7 5
137 2/11/2009 12 12
138 2/18/2009 9 5
139 2/25/2009 8 5
140 1/6/2009 < 5 5
141 1/14/2009 5 5
142 1/21/2009 9 5
143 1/28/2009 7 5
144
-8-
NC0025496- Lincolnton Ori, data
1/9/2012

REASONABLE POTENTOAL ANALYS S
Mercury
Date Data BDL=112DL Results
9/14/2011 2.5 2.5 Std Dev. 2.5410
8/17/2011 3.3 3.3 Mean 5.3242
7/21/2011 2.6 2.6 C.V. 0.4773
6/15/2011 2 2 n 33
5/18/2011 4.1 4.1
4/6/2011 7 7 Mult Factor = 1.72
3/16/2011 3.7 3.7 Max. Value C11.1. 1
2/9/2011 10.9 10.9 Max. Pred Cw i " 19.1 ng/
SPECIAL -
Values" WITH
"COPY"
Molybdenum
1/12/2011 10.9 10,9
12/8/2010 9.4 9.4
11/10/2010 5.1 5.1
10/6/2010 3.1 3.1
9/24/2010 2.5 2.5
8/4/2010 5.1 5.1
7/21/2010 3.5 3.5
6/9/2010 2.7 2.7
5/5/2010 4.5 4.5
4/7/2010 4.6 4.6
3/24/2010 4.4 4.4
2/17/2010 6.5 6.5
1/20/2010 11.1 11.1
12/9/2009 7.9 7.9
11/4/2009 8.5 6.5
10/7/2010 4.3 4.3
9/23/2009 3.8 3.8
8/5/3089 4.3 4.3
7/22/2009 4 4
6/24/2009 4.6 4.6
5/6/2009 4 4
4/15/2009 5.5 5.5
3/18/2009 5.8 5.8
2/4/2009 6.8 6.8
1/21/2009 8.7 8.7
Date Data BDL=112DL Results
1 9/14/2011 63 63 Std Dev. 10.7884
2 8/17/2011 4.4 4.4 Mean 9.3303
3 7/20/2011 1.8 1.8 C.V. 1.1563
4 6/15/2011 6.1 6.1 n 33
5 5/18/2011 1.4 1.4
6 4/6/2011 1.3 1.3 Mult Factor = 3.02
7 3/16/2011 4.7 4.7 Max. Value 63.0 ug/L
'i 8 2/9/2011 7 7 Max. Pred Cw 190.3 ug/L
9 1/12/2011 < 1 0.5
12/8/2010 11 11
11/10/2010 25 25
10/6/2010 6.4 6.4
9/22/2010 7.9 7.9
8/4/2010 < 2 1
7/21/2010 3.5 3.5
6/9/2010 4.7 4.7
5/5/2010 9.9 9.9
4/7/2010 7.9 7.9
3/24/2010 12 12
2/17/2010 11 11
1/20/2010 8.2 8.2
12/9/2009 10 10
11/4/2009 17 17
10/7/2010 5.6 5.6
9/23/2009 6.8 6.8
8/5/2459 7.2 7.2
7/22/2009 11 11
6/24/2009 5.5 5.5
5/6/2009 9.8 9.8
4/15/2009 8.9 8.9
3/18/2009 5.4 5.4
2/4/2009 11 11
1/21/2009 11 11
SPECIAL -
Values" WITH
"COPY"
NC0025496- Lincolnton Ori, data
- 9 - 1/9/2012

REASONABLE POTENTIAL ANALYSIS
- 10 -
NC0025496- Lincolnton On, data
1/9/2012

REASONABLE POTENTIAL ANALYSIS
Nickel
Date Data BDL=1/2DL Results
9/14/2011 < 2 1 Std Dev.
8/17/2011 < 2 1 Mean
7/20/2011 < 2 1 C.V.
6/15/2011 2.1 2.1 n
5/18/2011 < 2 1
4/6/2011 < 2 1 Mult Factor =
3/16/2011 < 2 1 Max. Value
2/9/2011 < 2 1 Max. Pred Cw
1/12/2011 < 2 1
12/8/2010 < 2 1
11/10/2010 < 2 1
10/6/2010 < 2 1
9/22/2010 < 2 1
8/4/2010 5.9 5.9
7/21/2010 < 2 1
6/9/2010 < 2 1
5/5/2010 < 2 1
4/7/2010 1.4 1.4
3/24/2010 1.8 1.8
2/17/2010 2.2 2.2
1/20/2010 2.1 2.1
12/9/2009 1.6 1.6
11/4/2009 < 2 1
10/7/2010 < 2 1
9/23/2009 < 2 1
8/5/2549 < 2 1
7/22/2009 < 2 1
6/24/2009 2.2 2.2
5/6/2009 5.2 5.2
4/15/2009 2.1 2.1
3/18/2009 9.5 9.5
2/4/2009 6.4 6.4
1/21/2009 12 12
SPECIAL -
Values" WITH
"COPY"
2.6193
2.2576
1.1602
33
3.03
12.0 ug/L
36.4 ug/L
Selenium
Date Data BDL=1/2DL Results
1 9/14/2011 2.5 2.5 Std Dev. 0.8307
2 8/17/2011 < 1 0.5 Mean 1.0545
3 7/20/2011 < 1 0.5 C.V. 0.7877
4 6/15/2011 < 1 0.5 n 33
5 5/18/2011 1.3 1.3
6 4/6/2011 < 1 0.5 Mult Factor = 2.30
7 3/16/2011 1.4 1.4 Max. Value 2.9 ug/L
8 2/9/2011 < 1 0.5 Max. Pred Cw 6.7 ug/L
9 1/12/2011 < 1 0.5
10 12/8/2010 < 1 0.5
11 11/10/2010 < 1 0.5
12 10/6/2010 < 1 0.5
13 9/22/2010 1.3 1.3
14 8/4/2010 2.9 2.9
15 7/21/2010 1.5 1.5
16 6/9/2010 2.2 2.2
17 5/5/2010 1.2 1.2
18 4/7/2010 < 1 0.5
19 3/24/2010 < 1 0.5
20 2/17/2010 < 1 0.5
21 1/20/2010 < 1 0.5
22 12/9/2009 < 1 0.5
23 11/4/2009 < 1 0.5
24 10/7/2010 < 1 0.5
25 9/23/2009 < 5 2.5
26 8/5/2639 < 1 0.5
27 7/22/2009 < 1 0.5
28 6/24/2009 < 1 0.5
29 5/6/2009 < 5 2 5
30 4/15/2009 < 5 2.5
31 3/18/2009 < 5 2.5
32 2/4/2009 < 1 0.5
33 1/21/2009 < 1 0.5
SPECIAL -
Values" WITH
" •P "
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
70
NC0025496- Lincolnton Ori, data
- 11 - 1/9/2012

REASONABLE POTENTIAL ANALYSIS
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96 c'u;
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
NC0025496- Lincolnton Ori, data
- 12 - 1; 9/2012

REASONABLE P
*)
TENT AL ANALYSES
Silver (AL)
Date Data BDL=1/2DL Results
1 9/14/2011 < 1 0.5 Std Dev. 0.1475
2 8/17/2011 < 1 0.5 Mean 0.5364
3 7/20/2011 < 1 0.5 C.V. 0.2750
4 6/15/2011 < 1 0.5 n 33
5 5/18/2011 < 1 0.5
6 4/6/2011 < 1 0.5 Mult Factor= 1.38
7 3/16/2011 < 1 0,5 Max. Value 1.200 ug/L
8 2/9/2011 < 1 0.5 Max. Pred Cw 1.656 ug/L
9 1/12/2011 < 1 0.5
10 12/8/2010 1.2 1.2
11 11/10/2010 < 1 0.5
12 10/6/2010 < 1 0.5
13 9/22/2010 < 1 0.5
14 8/4/2010 < 1 0.5
15 7/21/2010 < 1 0.5
16 6/9/2010 < 1 0.5
17 5/5/2010 < 1 0.5
18 4/7/2010 < 1 0.5
19 3/24/2010 < 1 0.5
20 2/17/2010 < 1 0.5
21 1/20/2010 < 1 0.5
22 12/9/2009 < 1 0.5
23 11/4/2009 < 1 0.5
24 10/7/2010 < 1 0.5
25 9/23/2009 1 1
26 8/5/2729 < 1 0.5
27 7/22/2009 < 1 0.5
28 6/24/2009 < 1 0.5
29 5/6/2009 < 1 0.5
30 4/15/2009 < 1 0.5
31 3/18/2009 < 1 0.5
32 2/4/2009 < 1 0.5
33 1/21/2009 < 1 0.5
SPECIAL -
Values" WITH
"COPY"
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
70
Zinc (AL)
Date Data BDL=1/2DL Results
1 9/14/2011 61 61 Std Dev. 15.2331
2 9/1/2011 54 54 Mean 56.1288
3 8/17/2011 85 85 C.V. 0.2714
4 8/3/2011 61 61 n 66
5 7/20/2011 64 64
6 7/6/2011 69 69 Mult Factor = 1.25
7 6/15/2011 93 93 Max. Value 93.0 ug/L
8 6/1/2011 56 56 Max. Pred Cw 116.3 ug/L
9 5/18/2011 61 61
10 5/4/2011 51 51
11 4/6/2011 80 80
12 4/20/2011 57 57
13 3/16/2011 53 53
14 3/2/2011 53 53
15 2/9/2011 52 52
16 2/24/2011 54 54
17 1/12/2011 46 46
18 1/26/2011 55 55
19 12/8/2010 39 39
20 12/22/2010 50 50
21 11/10/2010 86 86
22 11/24/2010 43 43
23 10/6/2010 57 57
24 10/27/2010 72 72
25 9/22/2010 79 79
26 9/8/2010 75 75
27 8/4/2010 46 46
28 8/18/2010 59 59
29 7/21/2010 62 62
30 7/7/2010 73 73
31 6/9/2010 49 49
32 6/23/2010 44 44
33 5/5/2010 49 49
34 5/19/2010 42 42
35 4/7/2010 56 56
36 4/21/2010 46 46
37 3/24/2010 54 54
38 3/11/2010 47 47
39 2/17/2010 38 38
40 2/3/2010 42 42
41 1/20/2010 70 70
42 1/6/2010 78 78
43 12/9/2009 66 66
44 12/23/2009 71 71
45 11/4/2009 70 70
46 11/18/2009 51 51
47 10/7/2010 57 57
48 10/21/2010 59 59
49 9/23/2009 89 89
50 9/9/2009 52 52
51 8/5/2819 52 52
52 8/19/2009 < 5 2.5
53 7/22/2009 55 55
54 7/1/2009 71 71
55 6/24/2009 53 53
56 6/3/2009 44 44
57 5/6/2009 57 57
58 5/20/2009 43 43
59 4/15/2009 43 43
60 4/1/2009 35 35
61 3/18/2009 35 35
62 3/4/2009 36 36
63 2/4/2009 61 61
64 2/18/2009 41 41
65 1/21/2009 59 59
66 1/6/2009 41 41
SPECIAL -
Values" WITH
"COPY"
67
68
69
70
NC0025496- Lincolnton Ori, data
- 13 - 1/9/2012

REASONABLE POTENTIAL ANALYSIS
- 14 -
NC0025496- Lincolnton Ori, data
1/9/2012

REASONABLE POTENTIAL ANALYSfiS
Date
1 9/14/2011
2 8/17/2011
3 7/20/2011
4 6/15/2011
5 5/18/2011
6 4/6/2011
7 4/26/2011
8 3/16/2011
9 2/9/2011
10 1/12/2011 M'
11 12/8/2010 ? d•"
12 11/10/2010
13 10/6/2010
14 9/22/2010 s.}t2
15 8/4/2010
16 7/21/2010
17 6/9/2010 t
18 5/5/2010
19 4/7/2010
20 3/24/2010
21 2/17/2010
22 1/20/2010
23 12/9/2009
24 11/4/2009
25 10/7/2009
26 9/25/2009
27 8/5/2009
28 7/22/2009
29 6/24/2009
30 5/6/2009
31 4/15/2009
32 3/18/2009
33 2/4/2009
34 1/21/2009
35
36
37
38
39 .0,
40
41
42
43
44
45
46
47 .'
48 ;e3
49 ,-
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
Data
t:1
Antimony
BDL=1/2DL Results
24 24 Std Dev. 12.0761
46 46 Mean 33.0000
23 23 C.V. 0.3659
44 44 n 34
19 19
43 43 Mult Factor = 1.52
67.5 67.5 Max. Value 67.500000 ug/L
25 25 Max. Pred Cw 102.600000 ug/L
46 46
44.5 44.5
38 38
33 33
48 48
35 35
40 40
41 41
36 36
30 30
39 39
42 42
21 21
20 20
25 25
11 11
27 27
25 25
30 30
30 30
30 30
22 22
16 16
18 18
31 31
52 52
SPECIAL -
Values" WITH
"COPY"
NC0025496- Lincolnton Ori, data
- 15 - 1/9/2012

REASONABLE POTENTIAL ANALYSIS
•-16-
NC0025496- Lincolnton Ori, data
1/9/2012

CITY OF LINCOLNTON
PUBLIC WORKS & UTILITIES
P.O. BOX 617 • 128 MOTZ AVENUE • TELEPHONE [phone] • FACSIMILE 736-8959
LINCOLNTON, NORTH CAROLINA 28093-0617
February 10, 2012
Mr. Jim McKay
Complex NPDES Program
N.C. Division of Water Quality/NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Re:
Subject:
Mr. McKay:
Draft NPDES Permit 2012
Permit Number NC0025496
Lincolnton WWTP
City of Lincolnton, NC
Response to Draft Permit Received dated January 18, 2012
The City of Lincolnton has reviewed the content of the Draft Permit and offers the
following comments for your review and consideration:
1. Supplement to Permit Cover Sheet
a. The Permit describes an existing 6.0 MGD wastewater treatment
facility consisting of twelve different process units. Five of the units
described need to be modified.
i. Reduce twelve diffused aerations basins to four. c i;
ii. Reduce six anaerobic sludge digesters to four anaerobic sludge
digesters and two sludge storage tanks. o $
iii. Delete the reference to three 250,000 gallon sludge storage
tanks. o K
From the Office of the Director

iv. The facility is located on NC 150 Bypass approximately 1 mile
from the intersection with NC Highway Business 321, south of
Lincolnton, Lincoln County. The permit indicated the facility is
located on NC Highway 50 approximately 1 mile from the
intersection of NC Highway 321. The physical address of the
facility is 550 West Highway 150 Bypass in Lincolnton, NC. e i-
2. Fact Sheet for NPDES Permit Development o +`-
a. The treatment plant description needs to be modified to mirror the
description in the "Supplement to Permit Cover Sheet" with
modifications described above.
lta5 karma
3. Effluent Limitation and Monitoring Requirements VP" P <<� / . ,,. , t s n
a. We hereby request monitoring only on Antimony. The WWTP has d: < < . , ,
responded to the influent antimony loading and a limit of 52 ug/L is
not justified. In addition the WWTP does not have designated ,l
process units to remove antimony and the City is providing �'' ` " 31
antimony reduction through its pretreatment program. We will
continue to work with industry to minimize antimony at our WWTP.
Please review the comments and contact us for further discussion. I would
suggest that a meeting between you and/or designated members of your staff
and me and designated members of my staff be scheduled to further address the
Draft Permit before the Final Permit is issued.
Thank you for your assistance in this matter, and I await your response.
Sincere
Steve Peeler, Director
Public Works & Utilities
CC: Jeff Emory, City Manager
James Rhyne, Superintendent WWTP
Pease Associates

1
.iaa.�lli�t
NCDENR
North Catalina Departure t'of Environrnent,and Naturat Resourcps
Division of Wafer Quaitity
Beverly ayes Perdue Charles WEAR!, ill. E. Daa Freeman
vkIrrior Director Secrvitary.
January 18.2012
MEMORANDUM
To: Britt Selzer
NC DENR I DWR/ Regional FngiQccr
Mopresville Regional Office
From: Ern McKay /= '4.
Complt x NPDC:S permitting
Subject: Review of proposed NPDF$ Pertmit NCIM5496
Lincobiton WWI'. Lincoln County_
Please indicate below your agency's position or vi C3Atpcint on the.;draft permit and return this. form by
February 18, 2012. If you have any questions:. On the -'draft permit.. please contact me at -telephone
number (919) 807- or via e-mail at [e-mail].
RESPONSE: (Cho* ono
C ncur with the issues of Ibis permit providedthe facility is operated and maintained prupc1y., the stated
effluent limits are met prior to discharge, and the discharge does not contravene the desivtat dwater quality
stands*,
QCOA tIn with Ike of the abgvc permit, provided theforlowingVanditiOns are met
riOpposes the is ice of the abovepernlit, based an reasons stand below, or attached:
Signed
161; Mail' ': -: ► f, Fl<se4It,caret d Z E9S-W7
t_ ' un 51?'4 Sb"..filrgi.$1. FIAMS,� L UGlth Gatfra 27 A4
a+x►: StVX1-€ Q FAX: Ss4-0O7 492
IitHrfrct verrr or.11'411','t =`'J
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)e1tllmIItI
rthCarolinu

North Carolina } ss
Mecklenburg County}
The Charlotte Observer Publishing Co.
Charlotte, NC
Affidavit of Publication
THE CHARLOTTE OBSERVER
NCDENR/DWQ/POINT SOURCE B
1617 MAIL SERVICE CENTER
RALEIGH NC 27699
REFERENCE: 40508896 D.SPRINKLE
030590/6631587 PUBLIC NOTICE 1/22
Before the undersigned, a Notary Public of said
County and State, duly authorized to administer
oaths affirmations, etc., personally appeared,
being duly sworn or affirmed according to law,
doth depose and say that he/she is a
representative of The Charlotte Observer
Publishing Company, a corporation organized and
doing business under the laws of the State of
Delaware, and publishing a newspaper known as The
Charlotte Observer in the city of Charlotte,
County of Mecklenburg, and State of North Carolina
and that as such he/she is familiar with the
books, records, fiLes, and business of said
Corporation and by reference to the files of said
publication, the attached advertisement was
inserted. The following is correctly copied from
the books and files of the aforesaid Corporation
and Publication.
PUBLISHED ON: 01/22
AD SPA.E: 54 LINE
FILED N:- 01/26 12
NAME: TITLE:
DATE:
In Testimony W er-.f I have hereunto set my hand
day and /y/ear aforesaid.
and affixed
Public Notice
North Carolina Environmental Management
CommissionfNPDES Unit
1617 Mall Service Center
Raleigh, NC 27699-1617
Notice of Intent to Issue a NPDES Wastewater Permit
The North Carolina Environmental Management Commission
proposes to Issue a NPDES wastewater discharge permit 10 the
person(s) listed below. ' .
Written comments regarding the proposed permit will be
accepted until 30 days after the publish date of this notice. The
Director of the NC Division of Water Quality (DWO) may hold a
public hearing should there be a significant degree of public
nterest. Please mall comments and/or information requests to
DWQ at the above address. Interested persons may visit the
DWO at 512 N. Salisbury Street, Raleigh, NC tc review
information on file. Additional Information an NPDES permits and
this notice may be found on 'our website:
http://portal.ncdenr.00rrg/web91q/SWP/Ps//n des/calendar, or by
• calling
City of Uncolnton, Uncoln County, requested renewal of permit
NC0025496 discharging treated wastewater to the South Fork
Catawba River, Catawba River Basin.
LP30590
my seal, the
a"Mrsion Expires: _/_/_
n Expires May 27, 2016

Removal Rate Calculations
Sample Date
Feb-10
Mar- l 0
Apr-10
May-10
Jun-10
Jul-10
Aug-10
Sep-10
Oct-10
Nov-10
Dec-10
Jan- l 1
Feb-11
Mar-11
Apr-11
May-11
Jun-11
Jul-11
Aug-11
Sep-11
Oct-11
Column Averages =>
NC0025496
Lincolnton WWTP
1/6/2012
Spreadsheet
Instructions:
1) Data
entered only in
Heavy
Bordered cells.
Rest of
worksheet is
protected,
password is
"2".
2) For below
detection data.
enter "<"in "<"
column, and
enter detection
level in Influent
or Effluent
mg/i columns.
Spreadsheet
will auto-
matically
calculate
averages and
removal rates
using 1/2
value entered.
3) Document
removal Rate
choice
4) Formulas in
Compre-
hensive Guide
HWA Chapter,
Section E,
page 1.
Influent Used in Effluent
mg/L Calculation < mg/L
195.9
214.5
195.9
214.5
9.9
11.6
Used in
Calculation
9.9
11.6
232.6
217.5
232.6
217.5
9.4
7.5
9.4
7.5
209.0
234.6
209
234.6
7.0
6.2
7
6.2
182.3
209.0
182.3
209.0
5.2
5.3
5.2
5.3
25496 Removai_rate Calculation
Removal Rates
Page 1 of 1 pages
1/6/2012, 2:49 PM
Revision: August 1999
207.3
207.3
4.5
4.5
211.7
211.7
5.1
5.1
223.0
223.0
7.8
7.8
220.3
220.3
11.5
11.5
237.8
237.8
9.1
9.1
224.2
224.2
8.3
8.3
216.2
216.2
9.7
9.7
217.2
217.2
8.4
8.4
211.1
203.7
211.1
203.7
6.6
8.1
6.6
8.1
196.8
210.4
196.8
210.4
4.9
9.7
4.9
9.7
220.6
220.6
214.081
4.6
Unpaired Site Specific RR =>
Literature/Default RR =>
0 % of data is BDL
4.6
7.64
96.43 %
85.00 %
<
Influent
mg/L
TSS
Used in
Calculation <
Effluent
mg/L
Used in
Calculation
109.4
109.4
15.0
15
140.8
140.8
15.0
15
152.0
152
9.5
9.5
133.2
133.2
6.9
6.9
158.7
158.7
6.0
6
210.0
210.0
4.0
4.0
160.5
160.5
6.2
6.2
142.7
142.7
4.6
4.6
148.6
148.6
3.6
3.6
151.6
151.6
3.2
3.2
149.9
149.9
6.0
6.0
149.1
149.1
12.2
12.2
178.9
178.9
11.8
11.8
206.4
206.4
9.1
9.1
153.9
153.9
8.6
8.6
147.6
147.6
5.0
5.0
_
139.4
139.4
4.3
4.3
143.3
143.3
5.2
5.2
134.3
134.3
4.0
4.0
157.9 ,
157.9
6.6
6.6
194.8
194.8
6.9
6.9
Unpaired
155.38
RR =>
RR =>
7.32
Site Specific
Literature/Default
95.29 %
85.00 %
0 % of data is BDL
AMMONIA
Influent Used in
mg/L Calculation <
Effluent
mg/L
Used in
Calculation
f
Unpaired Site Specific RR =>
Literature/Default RR =>
of data is BDL
85.00 %

To: Western NPDES Unit
Water Quality Section
Attention: James McKay
SOC PRIORITY PROJECT: No
Date: February 11, 2010
NPDES STAFF REPORT AND RECOMMENDATION
County: Lincoln
Permit No. NC0025496
PART I - GENERAL INFORMATION
1. Facility and address: City of Lincolnton WWTP
City of Lincolnton
Post Office Box 617
Lincolnton, N.C. 28093-0617
Physical Location
Highway 150 West By-pass
Lincolnton, NC 28093
2. Date of investigation: February 11, 2010
3. Report prepared by: Michael Parker, Environmental Engineer II
4. Persons contacted and telephone number: Mr. Jamie Rhyne, ORC, telephone number (704)
736-8960
5. Directions to site: From the intersection of old Highway 321 and Hwy 150 just south of the
City of Lincolnton, travel west on Highway 150 approximately 1.0 mile. The entrance road
to the wastewater treatment plant is on the right (north) side of the highway.
6. Discharge point: Latitude: 35° 26' 34" Longitude: 81° 15' 39"
U.S.G.S. Quad No.: F 13 NE USGS Name: Lincolnton west, N.C.
7. Receiving stream or affected surface waters: South Fork Catawba River.
a. Classification: WS-IV
b. River basin and subbasin no.: Catawba 030835
c. Describe receiving stream features and pertinent downstream uses: The receiving is
a segment of South Fork Catawba River with excellent flow. The Town of High
Shoals' water intake is located approximately three (3) miles downstream.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Current WWTP Design Capacity: 6.0 MGD
b. What is the current permitted capacity of the WWTP? 6.0 MGD

Page Two
c. Date(s) and construction activities allowed by previous ATCs issued in the previous
two years: Dechlorination was added during the term of the current permit.
d. Please provide a description of existing or substantially constructed wastewater
treatment facilities: The existing WWT facilities consist of an influent filter/screen
and washer, followed by a Vortex grit removal system, an Orbital oxidation ditch,
three screw pumps, twelve diffused aeration basins, two secondary clarifiers, a
dissolved air flotation sludge thickener, six anaerobic sludge digesters, a three
channel chlorine disinfection basin (gas), and sodium bi-sulfite dechlorination. The
existing sludge drying beds are no longer being used.
e. Please provide a description of proposed wastewater treatment facilities: There are
no proposed WWT facilities at this time.
PART III - OTHER PERTINENT INFORMATION
1. Special monitoring or limitations requests: The permittee did not request any changes to the
permit in the renewal application, however, during the site visit, the ORC inquired as to
whether effluent monitoring for phenols can be reduced from weekly to monthly. / 2v 4
2. Compliance history: This facility has a generally good compliance record in 2009, with the
exception of monthly effluent BOD5 violations in May and June caused by an off -spec
delivery of sodium bi-sulfite. A remission request of the civil penalties assessed for these
violations has been submitted.
PART IV - EVALUATION AND RECOMMENDATIONS
The City of Lincolnton (the City) is requesting renewal of the subject NPDES permit for the
continued operation of a WWTP and the discharge of treated wastewater into the South Fork
Catawba River. Changes to the permit since the last renewal includes the removal of the effluent
monitoring for Aldrin, Dieldrin, and 4,4 DDT and the modification of the effluent monitoring
requirements for Total Silver from 2/month to quarterly.✓,�Dechlorination was added to the WWTP
after a TRC limit was included in the last permit renewal. N to s n L
The City has lost a number of industrial customers (primarily textile) over the past decade,
however, there are still a few textile operations that send wastewater to the City's WWTP. Even so,
influent flows are down by roughly 0.400 MGD from two years ago, with the WWTP averaging
less than half of its hydraulic capacity. The City has been in discussions with an industry that is
considering relocating to the area that is a significant water user, however, beyond negotiations
nothing has been finalized at this time.

Page Three
Pending receipt and approval of the draft NPDES permit, it is recommended that the permit
be renewed as requested.
�� C zAt7/6
Signature of Report Preparer
ate
2-/i//ZUrro
ater Quality Regional Supervisor Date
H:1dsr\dsr10Uincolnton.doc

*Peae
Architects -Engineers
Pease Associates - Main Office
2925 East Independence Blvd.
Rost Office Box 18725
Charlotte, NC 28218
Phone [phone]
Fax [phone]
Pease Associates - Ashe County
One North Jefferson Avenue
Suite E
West Jefferson, NC 25694
Phone [phone]
Fax [phone]
January 26, 2010
Mrs. Dina Sprinkle
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Point Source Branch
1617 Mail Services Center
Raleigh, North Carolina 27699-1617
Reference: NPDES Permit NC0025496
Lincolnton WWTP
City of Lincolnton, NC
Catawba River Basin
Pease Commission No. 2009027
Subject: Permit Renewal Application
This package (3 copies) is submitted on behalf of the City of Lincolnton for renewal of NPDES
Discharge Permit NC0025496. The following items are included:
1. Completed and signed EPA Form 2A and attachments.
a. Attachment Exhibit A — Maps required under Part B.2 and B.3.
b. Attachment Exhibit B — Copies of Effluent Pollutant Scan Reports for Q1-2007, Q1-
2008 and Q4-2009. This information is used in completing Part D of the application
form.
c. Attachment Exhibit C — Copies of Effluent Toxicity Reports.
Thank you for your time and please do not hesitate to contact me (Email: rbernard@pease-
ae.com, Direct: 704-941-2113) or Jamie Rhye (704-736-8960) with any questions or comments
regarding the application or attachments.
Robert L. Bernard, P.E., LEED® AP
Vice President
RLB:rlb
Enclosures
cc: Mr. James S. Rhyne, City of Lincolnton
N:\2009027\CFile\Ph1-5\010-Rev-Approvals\2009027 2010 WWTP Discharge Renewal 103009r1b.doc
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