NC0025071_Permit Issuance_20150203

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74
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MCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
February 3, 2015
Mr. Brad Corcoran, City Manager
City of Eden
P.O. Box 70
Eden, NC 27289-0070
Donald R. van der Vaart
Secretary
Subject: Issuance of NPDES Permit Renewal
Permit No. NCO025071
City of Eden Mebane Bridge WWTP
Rockingham County
Facility Class N
Dear Mr. Corcoran:
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 October 15, 2007 (or as
subsequently amended).
The following change was made to the draft permit sent to you on October 8, 2014:
The mercury monitoring requirement added to Section A.(1.) was changed to an annual grab sample
instead of a quarterly composite. The footnote requiring that mercury be tested using EPA Method 1631E
was maintained. With the next permit renewal, mercury results will be evaluated and the need for a
mercury limitation or a Mercury Minimization Plan will be assessed.
As identified previously, the renewal permit contains the following significant changes from
your current permit:
• The requirement to begin reporting discharge monitoring data electronically using the NC DWR's
Electronic Discharge Monitoring Report (eDMR) internet application has been added to your NPDES
permit. [See Special Condition A.(4.)]
For information on eDMR, registering for eDMR and obtaining an eDMR user account, please visit
the following web page: http://portal.ncdenr.org/web/wq/admin/bog//ipu/edmr.
For information on EPA's proposed NPDES Electronic Reporting Rule, please visit the following
web site: h ptt ://www2.eya. ov/com liance/proposed-npdes-electronic-reDortin -rule.
• Effluent sampling data for Total Copper did not show reasonable potential to violate NC Water
Quality Standards (WQSs). However, since the maximum predicted value was greater than half the
calculated permit limitation, quarterly monitoring will be maintained in the permit.
• Effluent sampling data for Total Zinc did not show reasonable potential to violate NC WQSs. Since
the maximum predicted value was less than half the calculated permit limitation, zinc monitoring was
removed from the permit. Monitoring requirements for pretreatment are not affected.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Phone: [phone] Internet: www.ncdenr.gov
An Equal opportunity 1 Affirmative Action Employer — Made in part by recycled paper

Mr. Brad Corcoran, City Manager, City of Eden
Feb. 3, 2015
Page 2 of 2
• Based on a review of effluent color sampling and the closure of two textile industries, the color
effluent limitation and monitoring requirements have been removed from the permit.
• Upstream and downstream monitoring of fecal coliform and pH have been removed from the permit.
The stream is not impaired for fecal coliform or pH and instream data shows no impact from the
WWTP.
• Some of the wording has changed in Special Condition A. (2.), Chronic Toxicity Permit Limit, please
review each paragraph carefully.
• Special Condition A.(3.) has been modified to include the specific three years in which the Effluent
Pollutant Scans shall be performed (2015, 2016, and 2017). In addition, at the end of the Special
Condition, 2nd species Toxicity Testing Requirements for municipal permit renewals per Federal
Regulations [40 CFR 122.210)(5)] have been added.
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 Resources or any
other Federal, State, or Local governmental permits that may be required.
If you have any questions concerning this permit, please contact Julie Grzyb by email
[e-mail]) or phone at [phone].
Sincerely,
&Jay Zimmerman
1Acting Director, Division of Water Resources
Enclosure: NPDES Permit NC0025071
cc: NPDES Unit
Central Files
Winston-Salem Regional Office / Surface Water Protection Section
e-copy:
EPA Region IV
Susan Meadows, Aquatic Toxicity Branch
Frederick Cunningham, Virginia DEQ

Permit NCO025071.
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
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 Eden
is hereby authorized to discharge wastewater from a facility located at the
Mebane Bridge WWTP
204 Mebane Bridge Road (NCSR 1964)
south of Eden
Rockingham County
to receiving waters designated as the Dan River in the Roanoke River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set
forth in Parts 1, II, III and IV hereof.
This permit shall become effective .................. March 1, 2015.
This permit and authorization to discharge shall expire at midnight on April 30, 2018.
Signed this day ........................... February 3, 2015.
o. jay ummerman
Acting Director, Division of Water Resources
By Authority of the Environmental Management Commission
Part I. Page 1 of 7

Permit NCO025071
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.
The City of Eden is hereby authorized to:
1. Continue to operate the existing 13.5 MGD was treatment facility located at
204 Mebane Bridge Road south of Eden in Rockingham County. The facility includes
the following treatment components:
Parshall flume flow meter
Two mechanical bar screens and grit separator
Two extended aeration basins with a 7 MG volume each
Two 90 ft. diameter secondary clarifiers
Two 130 ft. diameter secondary clarifiers
Two V-notch automatic chlorinators and one V-notch manual chlorinator
Three 74,000 gallon chlorine contact basins
Dechlorination
One aerobic sludge digester
Sludge holding lagoon with polymer addition
Belt filter press, and
2. Discharge from said treatment works at the location specified on the attached map
into the Dan River, classified WS-IV waters in the Roanoke River Basin.
Part I. Page 2 of 7

Permit NCO025071
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
During the period beginning on the effective date of this permit and lasting until permit expiration, the
Permittee is authorized to discharge from outfafl 001. Such discharges shall be limited and
monitored' by the Permittee as specified below:
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Flow
13.5 MGD
Continuous
Recording
Influent or Effluent
BOD, 5-day 20°C 3
30.0 mg/L
45.0 mg/L
Daily
Composite
Effluent, Influent
Total Suspended Solids (TSS) 3
30.0 mg/L
45.0 mg/L
Daily
Composite
Effluent, Influent
NH3 as N (April 1-October 31
14.8 m /L
35.0 m /L
Daily
Composite
Effluent
NH3 as N November 1-March 31
3/Week
Composite
Effluent
H 4
Daily
Grab
Effluent
Fecal Coliform
(geometric mean
200 / 100 ml
400 / 100 ml
Daily
Grab
Effluent
Total Residual Chlorine (TRC) 5
28 g/L
Daily
Grab
Effluent
Temperature, °C
Daily
Grab
Effluent
Temperature, °C
Footnote 2
Grab
Upstream,
Downstream
Conductivity, Nmhos/cm
Footnote 2
Grab
Upstream,
Downstream
Dissolved Oxygen (DO), mg/L
Daily
Grab
Effluent
Dissolved Oxygen DO , m /L
Y9 ( ) 9
Footnote 2
Grab
Upstream,
Downstream
-Mercury, n /L 6
Annually
Grab
Effluent
Total Copper, /L7
Quarterly
Composite
Effluent
Total Nitrogen (TN)
TN = NO2 - N + NO3- N +-TKN, m /L
Monthly
Composite
Effluent
Total Phosphorus TP , m /L
Monthly
Composite
Effluent
Chronic Toxicity 8
Quarterly
Composite
Effluent
Effluent Pollutant Scan 9
Monitor and report
Footnote 9
Footnote 9
Effluent
Notes:
1. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring reports
electronically using NC DWR's eDMR application system. See Special Condition A (4).
2. Sample locations: Upstream -- Upstream at NCSR 1964; Downstream - Downstream at NCSR 700.
Upstream and downstream samples shall be grab samples. Stream samples shall be collected
three times per week during June, July, August and September and once per week during the
remaining months of the year.
3. The monthly average BODS and TSS concentrations shall not exceed 15% of the respective influent
value (85% removal).
4. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5. Total Residual Chlorine compliance is required for chlorine or chlorine derivative used for disinfection.
The Division shall consider all effluent TRC values reported below 50 ug/I to be in compliance with the
permit. However, the Permittee shall continue to record and submit all values reported by a North
Carolina certified laboratory (including field certified), even if these values fall below 50 ug/I.
6. Low-level mercury analysis using EPA method 1631 E for all effluent sampling is required.
7. Sampling for copper shall coincide with chronic toxicity monitoring.
8. Chronic Toxicity (Ceriodaphnia) P/F at 5.4%. Toxicity testing shall be performed in the months of
March, June, September and December (see Part A.(2.).
9. The permittee shall perform three Effluent Pollutant Scans during the term of this permit.
See Special Condition A.(3.).
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Part I, Page 3 of 7

Permit NCO025071
A. (2.) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
[15A NCAC 02B .0200 et seq.]
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 6.41 0/6.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, or subsequent versions
or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised- December 2010) or
subsequent versions. The tests will be performed during the months of March, June, September and
December. These months signify the first month of each three-month toxicity testing quarter assigned to the
facility. Effluent sampling for this testing must be obtained during representative effluent discharge and shall be
performed at the NPDES permitted final effluent discharge below all treatment processes.
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.
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 -December
2010) 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 THP313 for the Chronic Value. Additionally, DWR Form AT-3 (original) is to be sent to the
following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Water 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 Water 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. Assessment of toxicity compliance is based on the toxicity testing quarter,
which is the three month time interval that begins on the first day of the month in which toxicity testing is required
by this permit and continues until the final day of the third month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water
Resources indicate potential impacts to the receiving stream, this permit may be re -opened and modified to
include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival, 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.
Part 1, Page 4 of 7

Permit NCO025071
A. (3.) EFFLUENT POLLUTANT SCAN
[G. S. 143-215.1(b)]
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: 2015, 2016, and 2017. 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) Trans-1,2-dichloroethylene Bis (2-chloroethyl) ether
Chlorine (total residual, TRC) 1, 1 -dichloroethylene Bis (2-chloroisopropyl) ether
Dissolved oxygen 1,2-dichloropropane Bis (2-ethylhexyl) phthalate
Nitrate/Nitrite 1,3-dichloropropylene 4-bromophenyl phenyl ether
Kjeldahl nitrogen Ethylbenzene Butyl benzyl phthalate
Oil and grease Methyl bromide 2-chloronaphthalene
Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (EPA Method 1631 E)
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
Methyl chloride
4-chlorophenyl phenyl ether
Methylene chloride
Chrysene
1,1,2,2-tetrachloroethane
Di-n-butyl phthalate
Tetrachloroethylene
Di-n-octyl phthalate
Toluene
Dibenzo(a,h)anthracene
1 1 1., 1 -trichloroethane
1,2-dichlorobenzene
1,1,2-trichloroethane
1,3-dichlorobenzene
Trichloroethylene
1,4-dichlorobenzene
Vinyl chloride
3,3-dichlorobenzidine
Acid -extractable compounds:
Diethyl phthalate
P-chloro-m-cresol
Dimethyl phthalate
2-chlorophenol
2,4-dinitrotoluene
2,4-dichlorophenol
2,6-dinitrotoluene
2,4-dimethylphenol
1,2-diphenylhydrazine
4,6-dinitro-o-cresol
Fluoranthene
2,4-dinitrophenol
Fluorene
2-nitrophenol
Hexachlorobenzene
4-nitrophenol
Hexachlorobutadiene
Pentachlorophenol
Hexachlorocyclo-pentadiene
Phenol
Hexachloroethane
2,4,6-trichlorophenol
Indeno(1,2,3-cd)pyrene
Base -neutral compounds:
Isophorone
Acenaphthene
Naphthalene
Acenaphthylene
Nitrobenzene
Anthracene
N-nitrosodi-n-propylamine
Benzidine
N-nitrosodimethylamine
Benzo(a)anthracene
N-nitrosodiphenylamine
Benzo(a)pyrene
Phenanthrene
3,4 benzofluoranthene
Pyrene
Benzo(ghi)perylene
1,2,4-tichlorobenzene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
Reporting. Test results shall be reported on DWQ Form -A MR-PPA1 (or in a form approved by the Director) by
December 31St of each designated sampling year. The report shall be submitted to the following address: NC
DENR / DWR / Central Files,1617 Mail Service Center, Raleigh, North Carolina 27699-1617.
Part I, Page 5 of 7

Permit NCO025071
Additional Toxicity Testing Requirements for Municipal Permit Renewal. Please note that Municipal
facilities that are subject to the Effluent Pollutant Scan requirements listed above are also subject to additional
toxicity testing requirements specified in Federal Regulation 40 CFR 122.210)(5). The US EPA requires four (4)
toxicity tests for a test organism other than the test species currently required in this permit. The multiple
species tests should be conducted either quarterly for a 12-month period prior to submittal of the permit renewal
application, or four tests performed at least annually in the four and one half year period prior to the application.
These tests shall be performed for acute or chronic toxicity, whichever is specified in this permit. The multiple
species toxicity test results shad be filed with the Aquatic Toxicology Branch at the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Contact the Division's Aquatic Toxicology Branch at 919-743-8401 for guidance on conducting the additional
toxicity tests and reporting requirements. Results should also be summarized in Part E (Toxicity Testing Data) of
EPA Municipal Application Form 2A, when submitting the permit renewal application to the NPDES Permitting
Unit.
A. (4.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b)]
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and specify
that, if a state does not establish a system to receive such submittals, then permittees must submit DMRs
electronically to the Environmental Protection Agency (EPA). The Division anticipates that these regulations will
be adopted and is beginning implementation in late 2013.
NOTE: This special condition supplements or supersedes the following sections within Part II of this permit
(Standard Conditions for NPDES Permits):
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
I. Reporting rSupersedes Section D. (2.) and Section E. (5.) (a)l
Beginning no later than 270 days from the effective date of this permit, the permittee shall begin reporting
discharge monitoring data electronically using the NC DWR's Electronic Discharge Monitoring Report
(eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month' and submitted
electronically using eDMR. The eDMR system allows permitted facilities to enter monitoring data and submit
DMRs electronically using the internet. Until such time that the state's eDMR application is compliant with
EPA's Cross -Media Electronic Reporting Regulation (CROMERR), permittees will be required to submit all
discharge monitoring data to the state electronically using eDMR and will be required to complete the eDMR
submission by printing, signing, and submitting one signed original and a copy of the computer printed
eDMR to the following address:
NC DENR / DWR / Information Processing Unit
ATTENTION: Central Files / eDMR
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility being
physically located in an area where less than 10 percent of the households have broadband access, then a
temporary waiver from the NPDES electronic reporting requirements may be granted and discharge
monitoring data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3) or alternative forms approved by
the Director. Duplicate signed copies shall be submitted to the mailing address above.
Part I, Page 6 of 7

Permit NCO025071
Requests for temporary waivers from the NPDES electronic reporting requirements must be submitted in
writing to the Division for written approval at least sixty (60) days prior to the date the facility would be
required under this permit to begin using eDMR. Temporary waivers shall be valid for twelve (12) months
and shall thereupon expire. At such time, DMRs shall be submitted electronically to the Division unless the
permittee re -applies for and is granted a new temporary waiver by the Division.
Information on eDMR and application for a temporary waiver from the NPDES electronic reporting
requirements is found on the following web page:
hftp://Portal.ncdenr.org/web/Wg/admin/bog/ipu/edmr
Regardless of the submission method, the first DMR is due on the last day of the month following the
issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
2. Signatory Requirements (Supplements Section B. (11.) (b) and supersedes Section B (11) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II, Section
B. (11.)(a) or by a duly authorized representative of that person as described in Part Il, Section B. (11.)(b). A
person, and not a position, must be delegated signatory authority for eDMR reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user account and
login credentials to access the eDMR system. For more information on North Carolina's eDMR system,
registering for eDMR and obtaining an eDMR user account, please visit the following web page:
http://portal. ncdenr.o[g/web/wq/admin/bog/ipu/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make the
following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION WILL BE
ACCEPTED:
1 certify, under penalty of law, that this document and all attachments were prepared under my direction or
supervision in accordance with a system designed to assure that qualified personnel properly gather and
evaluate the information submitted. Based on my inquiry of the person or persons who manage the system,
or those persons directly responsible for gathering the information, the information submitted is, to the best
of my knowledge and belief, true, accurate, and complete. 1 am aware that there are significant penalties for
submitting false information, including the possibility of fines and imprisonment for knowing violations."
3. Records Retention (Supplements Section D. (611
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These
records or copies shall be maintained for a period of at least 3 years from the date of the report. This period
may be extended by request of the Director at any time [40 CFR 122.41].
Part I, Page 7 of 7

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USGS Quad: B20NW Southeast Eden, NC
Facility
Latitude: 36' 25' 17" N Stream Class: WS-IV
Location
Longitude: 79' 44' 35" W Subbasin: 030203
NCO025071 Mebane Bridge W M
Rockingham County
Receiving Stream: Dan River
N. '/

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NCDENR/DW,fFACT SHEET
NPDES PERMIT RENEWAL
NPDES No. NCO025071
Facility Information
Applicant/Facility Name:
City of Eden / Mebane Bride Wastewater Treatment Plant
Applicant Address:
P.O. Box 70, Eden, North Carolina 27289
Facility Address:
204 Mebane Bridge Road, Eden, North Carolina 27288
Permitted Flow
13.5 MGD
Type of Waste:
Full pretreatment program
Facility/Permit Status:
Class IV /Active; Permit renewal
County:
Rockingham ounty
Miscellaneous
Receiving Stream:
Dan River
Regional Office:
Winston-Salem
Stream Classification:
WS-IV
State Grid / USGS Quad:
B20NW/SE Eden,
NC
303(d) Listed?
No
Permit Writer:
Julie Grzyb
Subbasin:
03-02-03
Date:
January 28, 2015
Drainage Area (miz):
1701
AOMP
Lat. 36028' 17" N Long. 790 44' 35" W
Summer 7Q10 cfs
370 (July 1994)
Winter 7Q10 (cfs):
600 (July 1994)
30Q2 (cfs)
740 (July 1994)
Average Flow (cfs):
—1621
IWC (%):
5.35% (13.5
MGD)
W� �,a� P�IMS l,ttit-='3t�°a5ti1tt
uu11S Background for Permit Renewal
�C The facility serves the City of Eden (pop. 16,000), the town of Wentworth (pop. 2,700) and two
Si
gnificant Industrial Users (SIUs), Karastan Rug Mill and Weil -McClain. Weil -McClain is a
kw� 0.) Metal Finishing categorical industry that assembles residential and commercial boilers and
performs sheet metal forming and painting. Karastan Rug Mill performs dying, bleaching,
finishing, weaving and packaging of rugs and carpets. These SIUs are regulated through the
City's pretreatment program. The City lost 2 SIU's since the last permit renewal, National
Textiles, LLC (Hanes Brand) and Santee Company. National Textiles closed in Feb. 2009 and
was the main source of color to the W WTP and the cause of pump station overflows to the Dry
Creek plant. The Dry Creek POTW has also been closed down.
In 2005, due to a loss of industrial flow, the permittee requested and was issued a permit
modification with an interim reduction in permitted flow; from 13.5 MGD down to 10 MGD.
Since this discharge is 22 miles upstream of the water supply intake for Danville, Virginia, a
color limit (instantaneous maximum) of 300 ADMI at 13.5 MGD and 405 ADMI at 10 MGD
was required. The 300 ADMI limit is based on a 1990 color mass balance model that was used
for previous color limit determinations at various permitted flows. In 2006, with increased
industrial flow the permittee requested that the permitted flow of 13.5 MGD be reinstated along
with the 300 ADMI color limitation.
In late 2006 the City of Eden began mouthy instream monitoring of fecal coliform as requested
by the Dan River Association.
In 2008, the latest USGS steam data (1994) was used to recalculate the IWC and other related
dilution factors. The IWC % increased from 5.1% to 5.35% and was applied where applicable.
Fact Sheet
NPDES NCO025071
Page I of 5

This facility discharges to the Dan River in the Roanoke River Basin, and this portion of the Dan
River is classified as WS-IV. This portion of the Dan River is not listed as impaired on the 2012
or 2014 303(d) lists.
Current Effluent Characteristics
Flow. The WWTP's average flow was 3.65 MGD during calendar year 2013, which represents 27% of
permitted flow. Monthly Average flows ranged from 2.5 MGD to 5.5 MGD.
Table I. Lists average and maximum effluent data collected from 1/2012 through 8/2014.
Parameter
Flow
BODS
Total
Suspended
Solids
Ammonia
Nitrogen
Total
Nitrogen
Total
Phosphorus
Monthly Av .
Total
Copper
Total
Zinc
MGD
m l
(mg/L)
m
m
m
averse
3.46
3.22
4.82
0.13
8.82
0.33
26
61
maximum
17
132
32
2.7
14.7
1.6
69
100
Limit MA
13.5
30
30
14.8 S/ N/A W
41.70
13.2
175
Table 1 (continued)
Parameter
Fecal Coliform
Color
DO
(#/100m1)
(admi unit)
(mg/L)
average
12.19
<25
8.95
maximum
1120
<25
12.7
Limit (MA)
200/100 ml
300
Evaluation of Compliance Data
DMRs have been reviewed for the period January 2010 through August 2014. No limit violations have
occurred during that time period
The last routine Compliance Evaluation inspection was conducted on August 20, 2012 and the facility
evaluation rating was compliant. On October 10, 2014 a Pretreatment Compliance inspection was
performed and the inspector rated the permittee as very reliable.
Toxicity Testing. Since 2009 the facility has passed 24 of 24 chronic toxicity tests (including 4 fathead
minnow second species tests) all at 5.4% effluent concentration.
Evaluation of Instream Data
A review of instream data from Jan. 2012 through July 2014 showed no violations or concerns
related to pH, dissolved oxygen, temperature, fecal coliform, or color. No significant temperature
increases were shown, dissolved oxygen remained above 6 mg/L throughout the year, and fecal
colforms were low unless a high upstream number occurred as well. Color ADMI units all
remained below 200 with an average upstream value of 37 ADMI and an average downstream
value of 41 ADMI. It appears that color is no longer a concern since the closing of National
Textiles. Upstream and downstream monitoring of color, fecal coliform, and pH has been
removed from the permit.
See the Upstream and Downstream Data Evaluation following the fact sheet.
Reasonable Potential (RP) Analysis and Effluent Pollutant Scans
Quarterly effluent metals data was reviewed from Jan. 2012 through June 2014. Effluent samples for As,
Cd, Cr, CN, Pb, Mo, Ni, Se, and Ag showed all parameters at less than detection levels.
A Reasonable Potential Analysis was performed on quarterly effluent Zn sampling data from March 2013
to June 2014. Zinc showed no reasonable potential to violate water quality standards and the maximum
Fact Sheet
NPDES NCO025071
Page 2 of 5

predicted concentration was less than 50% of the allowable allocation (permit limit). Zn monitoring was
removed from the permit.
A Reasonable Potential Analysis was performed on monthly effluent Cu sampling data from April 2013
to August 2014. Copper showed no reasonable potential to violate water quality standards; however, the
maximum predicted concentration was greater than 50% of the allowable allocation (permit limit).
Copper monitoring was maintained in the permit renewal.
A Reasonable Potential Analysis was performed on - quarterly effluent Total Phenolic Compounds
sampling data from March 2013 to June 2014. Total Phenolic Compounds showed no reasonable
potential to violate water quality standards and the maximum predicted concentration was less than 50%
of the allowable allocation (permit limit).
Quarterly monitoring for Total Phenolic Compounds, As, Cd, Cr, Cu, CN, Pb, Mo, Ni, Se, Zn and Ag
will continue as part of the City's Pretreatment Long Term Monitoring Program.
A review of all the Effluent Pollutant Scans was performed. There were several hits of Bromoform,
Chloroform, Dichlorobromomethane, and Chlorodibromomethane. A reasonable potential analysis was
performed using the limited data set and none of the parameters showed potential to violate water quality
standards for Water Supply streams.
See the Reasonable Potential Analysis and the effluent data used in the analysis following the fact sheet.
Mercury TMDL Evaluation
In 2010, per the permittee's request, the mercury Water Quality Based Effluent Limitation (WQBEL) of
224 ng/L (based on a WQS of 12 ng/L) was removed from the permit since no reasonable potential was
shown to violate water quality standards. The permittee was not required to perform low-level mercury
testing since its IWC was small and the permit limit exceeded the mercury testing Practical Quantitation
Limit of 200 ng/L. The three effluent pollutant scans submitted with the application all reported mercury
at less than 200 ng/L. In accordance with the 2012 Mercury TMDL NPDES Guidance the permittee
needs to show annual mean effluent concentrations below both the WQBEL and the TBEL of 47 ng/L.
Therefore, the permittee will be required to monitor mercury annually, using EPA approved low-level
techniques.
Color Evaluation
The City of Eden requested that the color limit and requirements be removed from the permit
since all the industries that affected color are no longer there. Effluent color data from Feb. 2009
through July 2014 reported all samples for color at less than 25 ADMI. The color effluent
limitation and monitoring requirement has been removed from the permit. See a review of all
Effluent Color Data attached on a separate sheet.
Basis for Permit Effluent Limits or Removal
Color. Upstream and downstream monitoring of color has been removed from the permit. The
industry affecting color in the WWTP effluent no longer operates and effluent data confirmed
color at less than 25 ADMI since Feb. 2009 when National Textiles closed.
Based on a review of effluent color sampling and the closure of two textile industries, the color
effluent limitation and monitoring requirement has been removed from the permit.
Fecal Coliform. Upstream and downstream monitoring of fecal coliform has been removed from
the permit. The stream is not impaired for fecal coliform and instream data shows no impact
from the W WTP. In addition, the W WTP has no record of a fecal coliform limitation violation
during the past five years.
Fact Sheet
NPDES NCO025071
Page 3 of 5

pH. Administrative Code Section 15A NCAC 2B .0500 Surface Water Monitoring does not
require instream pH monitoring for WWTP's. Instream monitoring for pH showed all values
within the required range limit. Instream monitoring for pH was removed from the permit.
Total Zinc. Total zinc showed no reasonable potential to violate water quality standards and Zn
monitoring was removed from the permit.
LIMITS _
RATIONALE FOR LIMITATION,
EFFLUENT CHARACTERISTICS
Monthly
Weekly
Daily
-
Average .
Average
Maximum
Flow
13.5 MGD
15A NCAC 02B .0400 et seg., 02B .0500 et se
BOD, 5-day (20°C)
30.0 mg/L
45.0 mg/L
Administrative Code 15A NCAC 02B .0406 for
Municipal Wastewaters.
Total Suspended Solids (TSS)
30.0 mg/L
45.0 mg/L
Administrative Code 15A NCAC 02B .0406 for
Municipal Wastewaters.
NH3as N (April 1-October 31)
14.8 mg/L
35.0 mg/L
Summer BAT limit of 1 mg/L used as stream criteria
with an allowance for dilution
NH3as N (November 1-March 31)
Winter BAT limit of 1.8 mg/L used as stream criteria
with an allowance for dilution did not require a limit
H
Between 6-9 s.u.
Administrative Code 15A NCAC 02B .0211
Fecal Coliform
(geometric mean
200 / 100 ml
400 / 100 ml
Administrative Code 15A NCAC 02B .0211
Total Residual Chlorine (TRC) 5
28 µg/L
Administrative Code 15A NCAC 02B .0211
Temperature, °C
Administrative Code 15A NCAC 02B .0211
Temperature, Conductivity, Dissolved
Oxygen
Upstream and Downstream monitoring
15A NCAC 02B .0500 et seq
Dissolved Oxygen (DO), m /L
Monitor and report - effluent
Administrative Code 15A NCAC 02B .0211
Total Mercury
Monitor and report - effluent
Administrative Code 15A NCAC 02B .0211 and
2012 NC Mercury TMDL
Monitor and report - effluent
Administrative Code 15A NCAC 02B .0211
Total Copper, Ng/L7
(predicted concentration >50% of the allowable
allocation
Total Nitrogen (TN)
Monitor and report - effluent
15A NCAC 02B .0500 et seq
TN = NO2 - N + NO3- N + TKN, m /L
Total Phosphorus TP , m /L
Monitor and report - effluent
15A NCAC 02B .0500 et se
Chronic Toxicity
Monitor and report - effluent
15A NCAC 02B .0200 et seg.
Effluent Pollutant Scan
Monitor and report - effluent
G.S.143-215.1(b)j
Summary of Proposed Changes
The following permit changes are proposed for this permit renewal/expansion:
1. Addition of electronic DMR requirement.
2. Addition of annual monitoring for Mercury using low-level testing procedures.
3. Removed instream monitoring for pH, color and fecal coliform.
4. Removed effluent monitoring for zinc and color.
5. Addition of revised Effluent Pollutant scan specifying three years of sampling and 2°d species
testing requirements.
6. Addition of revised Toxicity testing language
Proposed Schedule for Permit Issuance:
Draft Permit to Public Notice: October 8, 2014 (est.) Newspaper lost add, Resent and published on 12/10/14.
Permit Scheduled to Issue: December 1, 2014 (est.)
Fact Sheet
NPDES NCO025071
Page 4 of 5

State Contact:
If you have any questions on any of the above information or on the attached permit, please contact Julie
Grzyb at [phone] or [e-mail].
CMI<; M. E
COMMENTS:
No comments were received from Region 1V EPA, the WSRO — Surface Water Protection, the Division
of Marine Fisheries or the VA DEQ. Concurrence to issue the permit was received from Eric Hudson,
WSRO — Public Water Supply.
Fact Sheet
NPDES. NC0025071
Page 5 of 5

PUBLIC NOTICE
North Carolina Environmental
Management Commission/NPOES Unit
1617 Mail Service Center
Raleigh, NO 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 to 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 NO Division
of Water Resources (DWR) may hold
a public hearing should there be a
significant degree of public interest.
Please mail comments and/or information
requests to DWR at the above address.
Interested persons may visit the DWR
at 512 N. Salisbury Street, Raleigh, NO
to review information on file. Additional
information on NPDES permits and this
notice may be found on our website:
http://portal.ncdenr.org/web/wq/swp/ps/
npdes/calendar, or by calling (919) 807-
6390. The City of Eden requested renewal
of permit N00025071 for the Mebane
Bridge WWTP in Rockingham County;
this permitted discharge is treated
domestic and industrial wastewater to
Dan River, Roanoke River Basin.
Affidavit of Publication
Personally appeared before me,
Dana Thompson
AR Clerk
Madison Messenger
A Newspaper published in the City of Madison,
who states on oath that the advertisement entitled
NPDES Wastewater Permit ...was duly
published in the foresaid Newspaper December 10, 2014
Newspaper Reference: 0003388444
'AR Clerld
Subscribed and sworn before me this /y�7 dat,,- a l�.#"6t� /�aur , 4 els-
6/ 4. 425-44
Notary Public
My Commission expires c� 'lag
` ON A. eO,
C
_ NorgR�°y
=o -
G7,q M C

Whole Effluent Toxicity Testing and Self Monitoring Summary
EBDC, Davidson LLC-Mill Pisgah Forest
NC0000078/001
County: Transylvania
Region: ARO
Basin:
FRB01
Jan
Apr Jul Oct
SOC_JOC:
CerI7dPF Begin: 9/1/2007
pf lim: 21%
NonComp: Single
7Q30:
154
PF; 13.0
IWC:
21
Freq: Q
J
F
M
A
M
1
1
A
S
0
N
D
2009 Pass
*
"
Pass
•
•
H
*
"
Pass
`
2010 Pass
`
'
Pass
"
*
H
`
*
H
2011 Pass
`
•
Pass
"
*
Pass
'
•
Pass
2012 Pass
`
"
Pass
"
*
H
`
*
Pass
2013 Pass
*
•
H
•
"
Pass
*
*
Pass
2014 Pass
"
"
Pass
•
•
H
*
r
"
•
`
Eden W WiP/Mebane Bridge
NCD025071/001
County: Rockingham
Region: WSRO
Basin:
ROA03
MarJun Sep Dec
SOC_JOC:
CerI7dPF Begin: 2/1/2009
chr lim: 5.4%
NonComp: Single
7Q30:
386
PF: 13.5
IWC:
5.1
Freq: Q
1
F
M
A
M
1
1
A
S
0
N
D
2009 *
`
Pass
*
"
Pass
"
•
Pass
*
"
Pass
2010 •
*
Pass
*
"
Pass
'
*
Pass
"
r
Pass
2011 '
'
Pass
*
>10.8(P)
Pass
>30.8(P)
`
Pass
*
*
Pass
2012 `
•
Pass
•
"
Pass
"
'
Pass
"
'
Pass
2013 *
"
Pass
*
"
Pass
`
*
Pass
'
•
Pass
2014 *
`
Pass
"
*
Pass
Edenton Dyeing and Finishing, LLC NC0003867/001 County: Chowan Region:
WARD
Basin:
CHO03
Feb May Aug Nov
SOC JOC:
Fthd24PF Begin: 12/1/2004 24hr ac p/f lim: 90% NonComp: Single
7010;
TIDAL
PF: 1.5
IWC:
NA Freq: Q
J
F
M
A
M
1 1
A
S
0
N
D
2009
*
H
*
*
H
• "
H
*
"
H
2010
r
H
r
s
H
r s
H
s
r
r
s
2011
"
H
•
•
H
* *
H
*
*
H
"
2012
*
H
"
•
H
' '
H
*
*
H
2013
"
H
"
"
H
• '
H
"
•
H
2014
•
H
"
*
H
* "
•
"
*
"
Edgewood Drive WTP NC0083224/001 County: Beaufort Region: WARD
Basin:
TAR07
Jan
Apr Jul Oct
SOC_JOC:
Fthd24PF Begin: 2/1/2010 Acu Fthd Monit: 90% NonComp: 7Q10:
PF:
IWC:
Freq: Q
1
F
M
A
M
1
1
A
S
0
N
D
2010 '
'
"
Fail
"
*
Pass
•
'
Pass
"
2011 Pass
"
*
Pass
*
•
Pass
*
"
Pass
2012 Pass
*
•
Pass
•
•
Pass
•
"
Pass
2013 Pass
'
*
Pass
"
'
Pass
"
"
Pass
2014 Pass
•
•
Pass
•
•
Pass
'
Page 49 of 145

MONITORING REPORT(MR) VIOLATIONS for:
Permit: NCO025071 MRs Between 1 - 2010 and 9 - 2014 Region:
Facility Name: % Param Name °io County 9�a
Major Minor.
Report Date: 09/19/14 Page: 1 of 1
Violation Category.Limi1 Violation Program Category: NPDES VAN
Subbasln.% Violation Action: %
PERMIT: FACILITY: COUNTY: REGION:
MONITORING OUTFALL/ - VIOLATION UNIT OF CALCULATED %
REPORT PPI
LOCATION PARAMETER DATE FREQUENC MEASURE LIMIT VALUE Over VIOLATION TYPE VIOLATION ACTION

Upstream and Downstream
Temp Up
Dote (C)
I2/1/2012
12/2/2012
12/3/2012 8
12/4/2012
12/5/2012
12/6/2012
12/72012
12/8/2012
12/9/2012
12/10/2012 11
I2/11/2012
12/12/2012
12/13/2012
12/14/2012
12/15/2012
12/16/2012
12/17/2012 10
12/18/2012
12/19/2012
12/20/2012
12/21/WI2
12/22/2012
12/23/2012
12/24/2012
12/25/2012
12/26/2012
12/27/2012 6
12/28/2012
12/29/2012
12/30/2012
12/31/2012 6
11/1/z012
11/2/2012
11/32012
11/4/2012
11/5/2012 8
11/6/2012
112/2a12
11/8/2012
11/9/2012
11/10/2012
II/I1/2ou
11/12/2012
11/13/2012 11
IV14/2012
11/Is2OI2
11/162012
11/172012
11/18/2012
11/19/2012 9
11/202012
II/2I/2OI2
11/22PO12
II/232012
11/242012
11/252012
11/26/2012 5
11/27/2012
11/m/2012
11/29/2012
11/30/2012
10/1/2012 19
102/2012
10/32012
10/42012
10/5/2012
10/6/2012
102/2012
10/8/2012 Is
10/9/2012
10/10/2012
10/11/2012
10/12/2012
10/13/2012
10/142012
10/1s/2012 16
10/16/201z
Data Evaluation (N00025071)
Temp Down( Temp Difference( DOUp DODown Color Up
C) C) (M8/1) (04910 (ADMI)
a
a
8 a 10 9.6 <25
a
0
0
a
0
a
10'. -1 11.1 10.5 <25
a
a
0
0
a
a
10 a 10.4 10.1 <25
0
0
0
0
0
a
0
0
_ 0
5 ;1 12.8 10.1 61
0
0
0
. - 4 M 11.4 13.4 25 -
0
0
0
0
8 0 20.1 9.8 <25
0
0-
0
0
0
a
0
11 0 9.8 9.9 <25
0
0
_ 0
a
a
9 0 10.2 10.2 <25
a
a
a
a
a
a
5 0 12.5 10.7 <25
0
O
0
0
18 _ , _ _..'; _..„3; 8.1 8.2 34
0
0
0
0
0
0
is 0 8.9 9s <ss
0
0
0
0
0
o EM-
is _ _ . •1 102 9.a <u
0
Color Down
(ADMI)
Feral
Coliform Up
VIOOMQ
Feral Collform
Down(/IO0m1)
Few1
Colifonn
Effluent
V100m1)
<25
41
30
<75
34
84
<26
77
111
67
W20
>2420
27
138
394
<25
56
4
<25
58
6
<25
104
91
<25
193
172
31
6
19
3a
1410
17M
<25
70
53

Upstream and Downstream
Temp Up
Date (C)
10/17/2012
10/18/2012
10/19/2012
10/20/2012
10/21/2012
30/22/2012 12
10/23/2012
10/24/2012
10/25/2012
10/26/2012
10/27/2012
1028/2012
10/29/2012 14
10/30/2012
10/31/2012
9/4/2012 24
9/5/2012 24
9/6/2012 23
9/10/2012 21
9/11/2012 19
9/12/2012 19
9/17/2012 19
9/18/2012 20
9/19/2012 20
9/24/2012 17
9/25/2012 36
9/26/2012 17
8/1/2012 25
e/62012 26
8/7/2012 25
8/8/2012 25
8/13/2012 23
8/14/2012 24
8/15/2012 24
8/20/2012 22
8/21/2012 22
8/22/2012 23
8/27/M12 22
8/28/2012 23
8/29/2012 24
7/2/2012 25
7/3/2012 25
7/$/2012 25
7/9/2012 25
7/10/2012 26
7/11/2012_ 25
7/16/2012 25
7/17/2012 25
7/18/2012 26
7/23/2012 24
7/24/2012_ 24
7/25/2012 23
7/30/2012 26
7/31/2012 25
6/42012 21
6/5/2012 21
6/6/2012 20
6/11/2012 23
6/12/2012 22
6/13/2012 21
6/18/2012 22
6/19/2022 22
6/20/2012 23
6/21/2012
6/25/2012 24
6/26/2012 23
6/27/2012_ 22
5/7/2012 21
5/14/1012 18
5/21/2012 19
5/29/2012 23
4/2/2012 16
4/9/2012 14
4/162012 17
4/242012 11
4/30/2012 16
3/5/2012 9
Data Evaluation I(I000025071)
Temp Down ( Temp DUference I DO Up DO Down Color Up
C) C) (Mg/L) (Mg/El (ADMI)
0
0
0
0
0
9 8.9 12.4 <25
0
0
0
0
0
0
15'. 1 ].] 8.6 30
0
0
25' 1 7.3 7.8 32
24 0 7.2 7.5 33
241 7.5 7.642
21 0 8.2 8.4 29
20 1 8.2 8.2 29
19 0 8.9 8.6 <25
19 0 8.6 8.9 <25
20 0 8.6 8.6 26
20 0 8.6 8.8 52
15i 8 8.3 27
15 -1 8.9 8.9 32
17 0 8.9 9 <25
25 0 7.2 7.3 <25
27 _ 1 7.6 7.8 28
27 _ _ �.__2j 7.2 7.4 <25
26 1 7.2 7.3 <25
24 1 7.5 8 31
_ _ 24 0 7.4 7.5 27
d4 0 7.3 7.7 26
23 1 7.5 7.8 <25
23 1 7.9 7.9 <25
23 0 7.7 8 <25
22 0 7.7 7.6 64
24 1 7.8 7.6 35
25 1 7.5 7.7 <25
26 1 7.1 7A 27
25 0 7.2 75 <25
261 1 7.3 7A <25
27 7 7.1 <25
27 6.9 7 <25
28 3 7.2 7.4 27
25 0 7.4 7.6 63
26 1 7 7.1 45
26 0 7.2 7.425
25 1 7A 7.6 50
25 1 7A 7.5 39
24 1 7.7 7.8 28
26 0 6.9 7.2 31
26 1 7.2 7.4 26
19 (._8.2 8.3 <25
20 -1 8.2 8.4 <25
19 -1 8.4 8.6 <25
_23 0 7.9 7.8 <25
23 1 9.9 8.8 <25
22 1 8.1 8 78
22 0 10 10.2 <25
23 1 8 8 <25
23 0 7.8 8 <25
0
24 0 7.9 7.6 33
_ 24 1 7.4 7.5 26
_ 23 1 8 8 32
_ _ 21 0 7.9 8.2 <25
13 0 9.8 10.2 33
20 1 8.4 8.3 <25
24 1 8 8 <25
17 1 9.7 9.4 <25
15 1 9.7 9.7 <25
17 0 9.4 9.5 <25
Il0 11.5 11.8 <25
17' 1 9.5 9.6 <25
9 0 11.5 11.5 <25
IPage 2
Fecal
Color Dawn Collform Up
(ADMI) (/100m11
Fecal Collform
DownUIODMI)
Fecal
Collform
Effluent
U100mll
<25
46
30
25
153
62
37
so
300
38
37
27
144
84
34
'
<25
US
184
224
25
53
44
136
100
25
<i5
33
<1
¢5
IN
140
9
<25
51
<25
15
32
IN
176
1
32
39
125
130
<25
132
92
2
125
4
<25
<1
93
120
81
<1
39
1
<25
2
<25
17
<25
7
<25
<1
<Is
48
<25
1
<25
8
65
1
54
<1
29
1
50
8
48
1
32
cl
31
50
31
23
<25
189
176
19
125
1
25
9
<25 54
50
1
<25
i
24
100
1
21
US
IN
SOB
- <1
<25
8
<25
120
30
400
800
5
30
]00
3
<25
2
25
100
58
5
44
400
500
<1
IS
77
62
<1
<25V9210K)
4
<2562
<1
<2547
<1
<2527
<1
<25152
8
<2543
1
<2539
1

Upstream and
Temp Up
Date (C)
3/12/2012 30
3/19/2012 16
3/26/2012 14
2/7/2012 7
2/13/2012 3
2/20/2D12 6
2/27/2012 7
1/3/2012 4
1/9/2012 8
1/17/20U 6
1/23/2012 6
1/30/2012 6
1/7/2013 5
1/14/2023 11
1/22/2013 4
1/29/2013 3
2/4/2013 4
2/11/2013 7
2118/2013. 3
2/25/2013 7
3/4/2013 4
3/11/2013 8
3/18/2013 9
3/25120M 6
4/1/2013 10
4/8/2013 12
4/15/2013 17
4/22/2013 13
4/29/2013 14
5/6/2013 14
5/13/2013 13
5/20/2013 36
S/28/2013 17
6/3/2013 22
6/4/2013 21
6/5/2013 21
6/10/2013 20
6/11/2013 20
6/12/2013 20
6/17/2013 19
6/18/2013 23
6/19/2013 21
6/24/2013 24
6/25/2013 23
6/26/2013 23
7/1/2013 24
7/2/2013 24
• 7/3/2013 24
7/8/3013 19
7/9/2013 20
7/10/2013 20
7/15/2013 21
7/16/2013 21
7/17/2013 22
7/22/2013 25
7/23/2013 24
7/24/2013 24
7/29/2013 22
7/30/2013 23
7/31/2013 23
8/5/2013 24
8/6/2013 23
8/7/2013 24
8/12/2013 25
8/19/2013 25
8/14/2013 25
8/19/2013 24
8/20/2013 25
e/21/2013 25
8/26/2013 22
8/27/2013 23
8/28/2013 23
9/3/2013 24
9/4/2D13 24
9/5/2013 23
9/9/2013 24
23
9/11/2013 24
Downstream Data Evaluation
Temp Down ( Temp Difference DO Up
C) (C) (M9/1)
10 0 11.5
17 1 9.5
14 0 9.4
51, 12.7
3 0 14.8
6 0 11.8
8 1 12.8
4 0 13.4
7 -1 12.6
6 0 13.7
6 0 13.3
6 0 12.8
4'. -1 13.4
11 D 10.4
4 0 12
2 -1 14.1
3 -1 13-6
7 0 12.2
3 0 13.6
6-1 11.9
4 0 12.6
8 D 11.1
9 0 11.7
6 0 13.1
11' 1 10.9
12 0 10.2
16 -1 8.6
13 0 9.9
15-i 1 7.6
14 0 9.7
13 0 10.3
19 1 10.1
17 0 9.4
22 D 7.7
21 0 7.9
21 0 7.9
21'. 1 8.8
21, 1 B.5
21 __ 1 8.3
21 l SA
247 1 8.2
22 1 8
24 0 7.6
25 _ 21 7.5
24' 1 8.1
24 0 7.2
25 1 7.4
24 0 7.6
20' 1 9.7
21 1 9.5
21 1 8.8
23 _01 7.7
22 1 8.2
23. 1 8.3
25 0 7.2
25 1 7.6
__ 25 1 7.6
22 0 7.7
23 0 7.6
24 1 7.6
24 0 7.4
24. 1 7.5
24 0 7.6
25 0 7.1
25 0 7.2
25 0 7.5
25'. 1 e
25 D 7.3
26 1 7.2
_ 21 -1 7.7
22 -1 7.7
23 0 8.2
25I 1 7.1
23 -1 7.3
23 0 7.3
24 0 ].]
24 1 7.9
24 0 7.6
(NCO025071)
DO Down Color Up
(Mg/1) (ADMI)
11.5 Q5
9.4 125
9 113
11 425
13.9 <25
11.5 <25
12.7 <25
13 <5
13.3 <25
13.8 <25
13.2 <5
12.8 QS
13.6 Q5
10.6 425
11.8 45
14.1 Q5
13.525
12A 37
13.5 QS
12.3<25
12 28
21.2 25
Me <25
13.1 <H
10.9 <25
10.2 30
8.7 38
9,833
9.6 31
9.7 <5
10.1 <25.
10.1 <25
9.3 <25
7.7 73
7.8 66
8.1 37
SA 36
8.487
8.548
8.6 <25
8.1 <25
7.8 42
73 Q5
7.6 26
8.1 Q5
7.3 25
7.4 <25
7.5 <25
9.1 40
9,894
8.5 39
7.5 26
8 35
a<5
7.3 25
7.4 25
7.4 <25
7.7 74
7.5 36
7.7 30
7.5 <25
7.5 <25
7.6 <25
7.6 29
7.3 26
7.6 25
7.9 47
7.3 61
7.3 53
8 44
8 38
7.5
8.24i<�
].7
7.7
8.1
7.9
7.8
Page
Color Down
(ADMI)
Q5
Fecal
Calilarm Up
VI00m1)
132
Fecal Califarm
Dawn V100m11
20
Fecal
ColUorm
Effluent
V100m11
1 7
QS
39
58
10
127
600)
6000
2
<25
Be
54
6
<25
39
16
<I
QS
Be
84
5
Q5
43
66
1
31
43
58
<1
Q5
M
1"
56
<25
Be
96
1
<25
80
136
3
Q5
16
31
<1
<25
20
41
6
125
21
54
41
33
122
127
18
Q5
12
5
14
30
84
IN
6
39
20
47
5
<5
13
16
4
Q5
32
23
4
27
23
25
3
27
20
14
'2
<25
26
20
12
<25
20
41
5
Q5
30
21
14
48
IS
22
4
41
192
196
12
38
649
921
6
26
sell
B66
12
<5
65
38
6
<5
63
93'
4
<25
613
613
8
QS
81
47
6
65
>2419
>2419
165
90
4
Be
1
46
173
276
1
81
2
48
12
Q5
61
67
2
QS
4
55
16
25
115
B4
11
25
9
<]S
6
<25
47
47
9
<25
3
<25
9
41
866
921
6
116
2
fill
<
27
115
236
Q
QS
1
Q5
1
Q5
276
121
1
39
1
25
3
98
1120
1733
71
58
2
35
<1
<5
69
99
<1
25
5
<25
4
36
649
365
4
27
16
43
10
47
980
921
9
64
10
30
1
41
72
67
8
44
9
11
108
79
2
4
8
291
]5
Q9/10/2013
3
8

Date
9/16/20U
9/17/2013
9/18/2013
9/23/2013
9/24/2013
9/25/2013
9/30/2013
10/1/2033
10n12013
10/14/2013
10/21/2013
10/23/2013
11/4/2013
11/12/2013
11/19/2013
11/25/2013
12/2/2013
22/9/2013
12/16/2013
1/27/2014
2/3/2014
2/1012U14
2/17/2014
2/24/2014
3/3/2014_
3/10/2014
2/17/2014
3/24/2014 _
Temp Up
(C(
21
ZO
20
20
19
20
18
18
20
20
14
12
13
13
13
8
e
12
8
16
10
8
9
7
6
9
10
8
32
12
_ 11
_ 12
13
Temp Down( Temp
C( ICI
21
_ 21
20
20
19
19
18
18
20
19i
14
12
13
13
12
7'.
]
11-
7
15�
9.
8
9
7
5
10S.
9.
8
111
111
11
12
12'
Difference
0
1
0
0
0
-1
0
0
0
-1
0
0
0
0
-1
.1
-1
-1
-3
-1
-1
0
0
0
-1
1
-1
0
1
-1
0
0
-1
DO Up
(mg/0
7.8
8.1
3.7
7.9
8.1
8.3
9.9
8.5
7.4
8.2
9
10
9.3
9.4
9.4
11.2
11.]
10
11.3
10.1
ID.6
11.1
108
11.6
129
11
10.4
11.8
9.7
10A
10J
10.4
10
DO Down
(Mg/L(
8.1
8.2
8.7
8.3
8.4
8.4
9.2
8.7
7.5
8.2
9.2
10.3
9A
9.5
9.7
11.4
12
9.9
11.4
10.3
10.8
11.6
11
11.3
12.9
11.2
IDA
12
9.7
10.1
10.8
10.3
9.7
Color Up
(ADMl)
28
<n
31
27
61
40
<25
<25
25
25
2]
<25
<25
<73
<25
<25
31
225
43
55
85
37
100
<25
<25
<25
<25
43
47
<25
76
<25
125
Page
33
Fetal
Coliform Up
U100m0
1111
fecal Coliform
Down(/SOOmlj
50
Fecal
Calif..
Effluent
(/300m1)
1
<25
10
<25
<1
53
260
NIL
<1
53
<1
50
2
<M
86
79
1
<25
15
<25
101
39
15
27
120
131
5
25
72
61
2
US
69
55
3
3O
<1
9
345
<1
8
96
<3
32
41
5
199
4
7
Me
32
J46
<312/23/2013
2
914
1512/30/2013
33
11201/6/2014
6
727
321/13/2014
5
326
301/21/2014
40
3
<25
41
26
3
<25
23
22
11
<Z
56
47
4
39
99
76
3
43
52
52
6
<25
13
17
5
86
395
613
5
<25
60
60
<1
<25
21
36
1

Mebane Bridge WWTP
NCO025071
2014 Freshwater RPA - 95% Probability/96% Confidence
QW(MGD)= 13.50
1Q108(c£s)= 299.26
7Q10S(cfs)= 370.00
7QIOW(cfs)= 600.00.
30Q2(cfs)= 740.00
Avg, Stream Flow, QA(cfs)= 1621.00
Receiving Stream: Dan River
MAXIMUM DATA POINTS = 58
W WTP/WTP Class: IV
IWC ® 1Q10S = 6.535284%
' IWC Q7Q10S= 5.352689%
IWCQ7Q10W= 3.369972%
IWC Q 30Q2 = 2.749943%
IWCQ QA= 1.274419%
Stream Class: WS-IV
Outfall 001
Qw = 13.5 MGD
PARAMETER
STANDARDS & CRITERIA (2)
REASONABLE POTENTIAL RESULTS
T1PE
.0
�
RECOMMENDED ACTION
NC WQS / Applied %m FAV /
Max Prod
(1)
a
2
Chronic Standard Acute
1 n # Det. Allowable Cw
Cw
Acute: NO WQS
Arsenic
C
50 FW(7Q10s)
ug/L
0 0
N/A
.
Chronic-____ 934.1 -----------------------------
--sample-----
Arsenic
C
10 IIIVWS(Qavg)
ug/L
0 0
N/A
Chronic: 784.7--
--------—--------- -----
Cadmium
NC
2 FW(7Q10s) 15
ug/L
0 0
N/A
Acute: 229.5
All samples
pies <t ug/L 4
-____ ___
Chronic37.4
_—_____—___________—______
Acute: NO WQS
No RP, Predicted Max <50%of Allowable Cw-No
Total Phenolic Compounds
NC
300 A(30Q2)
ug4.
10 6
478.8
_
Monitoring required
No value> Allowable Cw
Acute: 15,638.2
'
Chromium
NC
50 FW(7QIOs) 1022
ug/L
0 0
N/A
All samples <5 ug/L_
il'; a:—'— 934.1 --
----------------------
Acute: 111.7
No RP, Predicted Max z 50% of Allowable Cw-
Copper(AL)
NC
7 FW(7Q10s) 7.3
ug/L
58 58
69.0
apply Quarterly Monitoring
_
Chronic:____ 130.8__
_—________._______________
No value> Allowable Cw
Acute: 336.E
Cyanitle
NC
5 FW(7Q109) 22
10
ug/L
0 0
N/A
All samples < 10 ug/L
_ _
Chronic:____ 93.q__
_—_____—_______—_____—____
Acute: 517.2
Lead
NC
25 FW(7Q10s) 33.8
ug/L
0 0
N/A
All samples <5 u9n._
Chronic:—�—� 467.1 --
-----'—'--'—'---------
Acute: NO WQS
Molybdenum
NC
160 WS(7Q10s)
ug/L
0 0
N/A
_ _--
All samples <5 ug/L
_ _
hr-—___2,9- _
Chronic*------------------------------
89.2
________________________—
Acute: 3,913.7
Nickel
NC
25 WS(7QIOs) 261
ug/L
0 0
N/A
All samples<5,
_
Chronic: —___ 467.1 __
_______—___________—_—____
9595 FRESHWATER RPA2014 mebane bridge WWTP(2).xlsm, rpa
Page 1 of 2 9/19/2014

rI
Mebane Bridge WWTP . Outfall 001
NCO025071 2014 Freshwater RPA - 95% Probability,195% Cnnfirlpnt_a n.., — 4 � C Rfi^M
wtry — r V.J IYIV✓
Acute: 856.9
Selenium
NC
5 FW(7Q10s) 56
ug2
0 0
N/A
__
All samples < 10 ug/L
_ ___
Chronic: 93.4___
__________________________
Acute: 18.821
Silver (AL
NC
0.06 FW(7Q10s) 1.23
ug/L
0 0
N/A
All samples - 5 ug/L)
_
Chronic'—'--L121 —
'—'—'--'—'—'—'------'—'—
Zinc (AL)
Acute: 1,025.2
No RP, PredlUed MMx 50%of Allowable Cw-No
NC
50 FW(7Q10s) 67
ug/L
11 11
132.0
_ _
Monitoring required
Chronic:__—_ 934.1 —_
_—_______________________—
No value> Allowable Cw
:
AcuteNO WQS
Chlorotlibromomethane
C
0.4 WS(Qavg)
µg/L
3 ] 34,5
No RP, limited data set_
Note: n<9 Default C.V.
Chronic:----3L39--
-------------------------
Limited data set
No value> Allowable Cw
Acute: . NO WQSe
Dlchloro6romomethan
C
0.55 WS(Qavg)
µp/L
3 2 36
No RP, limited data set
Note: n<_9 Default C.V.
Chronic: 43.2
—
Limited data set
No value > Allowable Cw
Acute: NO WQSNo
Chloroform
c
5.6 WS(Qavg)
µg/L
3 3 46.8
RP, limited data set
Note: n<9 Default C.V.
69o7:---�439.4--
----------------------
Limited data set
No value> Allowable Cw
Acute: - NO WQS
Bromoform
C
4.3 WS(Qavg)
4 1 17.4
No RP, limited data set
Notc: n <9 Default C.V.
Chronic: 337.4
Limited data se[
No value> Allowable Cw
9595 FRESHWATER RPA2014 mebane bridge W WTP(2).xism, rps
Page 2 of 2 9/1912014

Effluent Color Data
Reported
Month
Day
Year
Sample Type
Units
Value
NCO025071
2
13
2009
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
23
' 2009
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
24
2009
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
27
2009
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
22
2009
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
23
2009
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
24
20.09
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
10
6
2009
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
10
7
2009
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
10
8
2009
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
11
2010
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
12
2010
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
13
2010
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
7
2010
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
8
2010
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NC0025071
4
9
2010
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
12
2010
00083 --Color, Spectrc Grab
admi unit
. 25 LESSTHAN
Effluent
NCO025071
7
13
2010
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
14
2010
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
10
4
2010
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
10
5
2010
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
10
6
2010
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
10
2011
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
11
2011
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
12
2011
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
12
2011
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
13
2011
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
14
2011
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
27
2011
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
28
2011
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
29
2011
00083 - Color, Spectrc Grab
admi unit
25
Effluent
NCO025071
10
3
2011
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
10
4
2011
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
10
5
2011
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
3
2012
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
4
2012
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
5
2012
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
2
2012
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
3
2012
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
4
2012
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
9
2012
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
10
2012
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
11
2012
00083 - Color, Spectrc Grab .
admi unit
25 LESSTHAN
Effluent
NCO025071
10
1
2012
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
10
2
2012
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent

NCO025071
10
3
2012
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
2
2013
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
3
2013
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
4
2013
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
• 1
2013
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
2
2013
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
3
2013
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
1
2013
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN.
Effluent
NCO025071
7
2
2013
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
3
2013
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
10
1
2013
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
10
2
2013
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
10
3
2013
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
6
2014
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
7
2014
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
1
8
2014
00083 - Color, Spectrc Grab.,
admi unit
25 LESSTHAN
Effluent
NCO025071
4
7
2014
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
8
2014
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
4
9
2014
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
1'
2014
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
NCO025071
7
2
2014
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
:NC0025071
7
3
2014
00083 - Color, Spectrc Grab
admi unit
25 LESSTHAN
Effluent
Since Feb. 13, 2009 all effluent color samples
hav6 been 25 ADMI or less

Calculations
Mebane Bridge Assume upstream TRC level = 0
NCO025071 Assume upstream Fecal level = 0
Prepared By: JAG Check Box if WTP Facility ❑
Enter Design Flow (MGD): 13.500 Enter Upstream NH3-N Level (mg/L): 0.220
Enter s7Q10(cfs): 370.000
Enter w7Q10 (cfs): 600.000
Total Residual Chlorine
Ammonia (NH3 as N)
Limit MAX
(summer)
35.0 mg/L
7Q10 (CFS)
370
7Q10 (CFS)
370
DESIGN FLOW (MGD)
13.5
DESIGN FLOW (MGD)
13.5
DESIGN FLOW (CFS)
20.925
DESIGN FLOW (CFS)
20.925
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
UPS BACKGROUND LEVEL (1
0
UPS BACKGROUND LEVEL (1
0.220
IWC (%)
5.35
IWC (%)
5.35
NON-POTW
Allowable Conc. (ug/1)
28
Allowable Conc. (mg/I)*
14.8
14.8
WEEKLY AVG LIMIT (mg/1)
3&0
35.0
(WEEKLYIDAILY)
Ammonia (NH3 as N)
(winter)
7Q10 (CFS)
600
Fecal Limit
200/100ml
DESIGN FLOW (MGD)
13.5
(If DF >331; Monitor)
DESIGN FLOW (CFS)
20.925
(If DF <331; Limit)
STREAM STD (MG/L)
1.8
Dilution Factor (DF)
18.68
UPS BACKGROUND LEVEL (1
0.220
IWC.(%)
3.37
NON-POTW
Allowable Conc. (mg/l)*
NO LIMIT
NO LIMIT
(WEEKLYIDAILY)
* MONTHLY AVG LIMIT
Servor/C,urrent Versions/IWC.
9/1812014

sius
WDES/A uifer Protection Permittin Unit Pretreatment Information Request Form
PERMIT WRITER COMPLETES THIS PART:
PERMIT WRITERS - AFTER you get this form back
from PERCS:
Check all that apply
Date of Request
9/18/2014
municipal renewal
V
Re uestor
Julie Grzb
new industries
Facility Name
Mebane Bridge WWTP
WWTP expansion
Permit Number
NCO025071
Speculative limits
Re ion
WSRO
stream reclass.
Basin
Roanoke
outfall relocation
7Q10 change
other
other
check applicable PERCS staff:
Other Comments to PERCS:
They list two SIU's in their application:
Karastan Rug Mill
BRD, CPF, CTB, FRB, TAR - Sarah Morrison 807-6310)
y
CHO, HIW, LUM, LTN, NES, NEW, ROA, YAD - Monti
Hassan 807-6314
and Weil -McClain (CIU)
Does that match up with your records?
PERCS PRETREATMENT STAFF COMPLETES THIS PART:
Status of Pretreatment Program (check all that apply)
1) facility has no SIU's, does have Division approved Pretreatment Program that is INACTIVE
facility has no SIU's, does not have Division approved Pretreatment Program
3) facility has SIUs and DWQ approved Pretreatment Program (list "DEV' if program still under development)
3a) Full Program with LTMP
113b) Modified Program with STMP
4) additional conditions regarding Pretreatment attached or listed below
Flow, MGD Permitted Actu ime period for Actual STMP time frame:
Industrial Most recent:
Uncontrollable n/a Next Cycle :
it POC due to
a Parameter of Required POTW POC STMP LTMP
NPDES/Non- Required by POC due
Concern
c (POC) Disch Permit EPA* by S03 to SIU*** (Explain Effluent Effluent
o Check List Limit Sludge*` below)**** Freq Freq
a
BOD 4 F Q
TSS V 4 M Q = Quarterly
NH3 4 Q M M = Monthly
Arsenic 4 Q M
Cadmium v 4 Q M
Chromium ✓ 4 Q M
Copper 47 Q M
Cyanide
4
Q M
is all data on DMRs?
Lead
4
Q M
YES
Mercury
t/'
4
Q M
NO (attach data)
Mol bdenum
4
Q M
Nickel
4
Q M
Silver
4
Q M
Selenium
Vr
4
Q M
Zinc
4
Q M
is data in spreadsheet?
Total Nitrogen
V000,
4
Q M
YES email to writer
Phosphorus
4
Q M
NO
4 Q M
N. 'A4 Q M
4 Q M
4 Q M
*Always in the LTMP/STMP ** Only in LTMP/STMP if sludge land app or composte (dif POCs for incinerators)
*** Only in LTMP/STMP while SIU still discharges to POTW **** Only in LTMP/STMP when pollutant is still of concern to POTW
Comments to Permit Writer (ex., explanation of any POCs: Info you have on IU related investigations Into NPDES problems):
Mebane Bridge WWTP PERCS NPDES request 9-18-14.xisx
Revised: July 24, 2007

�F�r�►
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory John E. Skvarla, III
Governor Secretary
October 15, 2014
0I0(G)MAN 1111111
To: Eric Hudson
DWR/ Public Water Supply - WSRO
From: Julie Grzyb
NCDENR / DWR /Complex Permitting Unit
Central Raleigh Office
Subject: Review of draft NPDES Permit NCO025071
Mebane Bridge WWTP
Rockingham County
Please complete this form to indicate your agency's position or viewpoint on this draft permit and return to me
by November 14, 2014. If you have any questions on the draft permit, please contact me at telephone number
[phone] or via e-mail at [e-mail].
RESPONSE: (Check one)
Concur with the issuance of this permit provided the facility is operated and maintained properly, the
stated effluent limits are met prior to discharge, and the discharge does not contravene the designated
water quality standards.
❑ Concurs with issuance of this permit, provided the following conditions are met:
❑ Opposes the issuance of this permit, based on reasons stated below, or attached:
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Phone: [phone] V Internet: w .ncwaterquality.org
An Equal Opportunity t Affirmative Acton Employer

�. 00/ 10 z01
eit*of Eden
Depa,dnf &u4 nmentae seent o
W cL6 wate4 J Keabnent J Pant 'Al
October 18, 2011
Coleen H. Sullins
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Subject: NPDES Permit Renewal hl nt �����
Permit Number NCO025071 C
City of Eden — Mebane Bridge W WTP ���,t?, `t�
f t
Rockingham County Pa�� �.^
f � lit '
Dear Ms. Sullins, ko�"
Our current NPDES permit expires on April 30, 2012. We have completed NPDES Form
2A and are submitting this along with all additional attachments for our renewal
application. We have included aerial views of our plant along with a flow diagram and a
facility description. For our land application program, we have included a list of all
farms with their acreage, a list of all farms that received sludge each year, and a separate
list of how much sludge in either gallons or dry tons was applied to each farm each year.
This is being sent to you 180 days prior to the renewal date for the required period of
review. If any further information is required or needs further explanations, please let us
know.
We are also requesting that our color limit and requirements be removed from our permit.
All of the industries that affected us in the past have since closed, and we no longer have
an issue with color. We no longer add polymer as a treatment process for color removal G a}
even though we still have the capability to do so. I have also included a separate sheet t
documenting our color results for the plant and the river since the last dyeing industry
stopped discharging. Thank you for your consideration of this matter. Oft
Sincerely, J
Melinda S. Ward eJ • 13
WW Superintendent
P. O. Box 70 • Eden, NC 27289-0070 • [phone] • Fax [phone]

8
average adjusted
U astrea m
date
results
date
results
Jan-09
<29
Oct-10
<36
Feb-09
<33
Nov-10
<31
Mar-09
<47
Dec-10
<28
Apr-09
<33
Jan-11
<25
May-09
<27
Feb-11
<25
Jun-09
<34
Mar-11
<58
Jul-09
<25
Apr-11
<44
Aug-09
<25
May-11
<29
Sep-09
<30
Jun-11
<26
Oct-09
<25
Jul-11
<26
Nov-09
<47
Aug-11
<25
Dec-09
<36
Sep-11
<32
Color Results (ADMI)
average adjusted
FBownstream
date
results
date
results
Jan-09
<31
Oct-10
<33
Feb-09
<27
Nov-10
<32
Mar-09
<51
Dec-10
<25
Apr-09
<32
Jan-11
<27
May-09
<27
Feb-11
<25
Jun-09
<38
Mar-11
<62
Jul-09
<27
Apr-11
<51
Aug-09
<25
May-11
<25
Sep-09
<29
Jun-11
<26
Oct-09
<25
Jul-11
<26
Nov-09
<43
Aug-11
<26
Dec-09
<38
Sep-11
<34
Jan-10
<61
Jan-10
<58
Feb-10
<27
Feb-10
<29
Mar-10
<47
Mar-10
<46
Apr-10
<25
Apr-10
<25
May-10
<28
May-10
<27
Jun-10
<26
Jun-10
<26
Jul-10
<26
Jul-10
<27
Aug-10
<25
Aug-10
<25
Sep-101
<27
Sep-10
<28
averaee adiusted
Effluent
date
results
Feb-09
<30
Apr-09
<25
Jul-09
<25
Oct-09
<25
Jan-10
<25
Apr-10
<25
Jul-10
<25
Oct-10
<25
Jan-11
<25
Apr-11
<25
Jul-11
<25
Oct -ill
<25
* Hanes Brand industry closed down
completely in February 2009. We
no longer have any significant
dye operations.

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Ifow�GCrShomCs
c � Shoppuv Center �� � L
rr Eden
1 w ,
.. tea;, - � t w � . ' �:... � •�
� � .fit s.>- _ � e ...� 1 y i y,.. -•,• � 4- . 0
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Close up view of the Mebane Bridge Wastewater Plant with requested items marked.
w
T�
' R
T � �
1
/ • r
/1 ML.
L A+

Mebane Bridge Facility Description
CAPACITY
13.5 MGD
INFLUENT
Receives Force Main flows from the Junction Pump Station, the Convenant Branch
Pump Station, and the Industrial Park Pump Station.
Influent flow is measured by a Parshall Flume.
Septic Waste Receiving Pump Station located before the Parshall Flume.
SCREENING
Two Mechanical Bar Screens with 1 inch clear openings.
Two collection hoppers for Transport to Landfill.
GRIT REMOVAL
One chain and bucket type grit collector.
Aeration System with two Positive displacement blowers.
One collection hopper for Transport to Landfill.
EXTENDED AERATION
Two Aeration Basins with a 7 MG volume each.
Each Basin will have: Twelve 20 HP brush aerators and three Solar powered floating
mixers.
Retention Time Approximately 24 hours @ 13.5 MGD flow rate.
Two flow splitter boxes to regulate flow to clarifiers.
Two 90 Ft. diameter clarifiers; Siphon feed, Peripheral effluent, and suction type sludge
collectors.
Two 130 Ft. diameter clarifiers; Siphon feed, Peripheral effluent, and suction type
sludge collectors.
Wet well/Dry well recirculation station #1 with three 1550 GPM centrifugal pumps.
Wet well/Dry well recirculation station #2 with three 3125 GPM centrifugal pumps.
Two 800 GPM Submersible Waste Activated Sludge Pumps.
DISINFECTION
Two V-notch 500 lb/day Automatic Chlorinator w/flow proportional controllers.
Automatic Switchover with vacuum regulator.
Dual Ton Cylinder Weight Scale.
One V-notch 500 lb/day Manual Chlorinator.
One flash mixing chamber with turbine type mixer for a 14,000 GPM chamber flow.
Three 74,000 gallon baffled chlorine contact basins.

CHEMICAL FEED
Storage Tank for Polymer and associated feed pumps
Storage Tank for Sodium Bisulfite and associated feed for Dechlorination
DECHLORINATION
Sodium Bisulfite is used for Dechlorination
Located in common trough for all three chlorine contact basin effluents.
AEROBIC SLUDGE
One 2.3 MG Basin
DIGESTION
Four 20 HP brush aerators.
Wet well/Dry well decant station.
Two 300 GPM Centrifugal pumps.
Decant pumps to the recirculation wetwell.
WET WELL/DRY WELL WASTE SLUDGE PUMPING STATION
Two 150 GPM centrifugal pumps.
Pumps sludge to Sludge Holding Lagoon or day tank at Dewatering Building.
SLUDGE DEWATERING and DISPOSITION
One 2.0 meter Belt Filter Press rated at 2000 pounds/hour.
One 50,000 gallon sludge storage tank.
One covered, concrete 14,800 square feet dewatered sludge storage shelter.
Two 2 MG Sludge Holding Lagoons (Currently unused)
Five Sludge Drying Beds (Currently used for storage of grit and rags to be transported
to landfill)
One Gravity Decant Dewatering Line
One Pump Assisted Gravity Decant Dewatering Line
Decant water returns to recirculation wetwell
Sludge is Land Applied by Contracted Company

Process Flow Diagram of the Mebane Bridge Wastewater Plant, including additions.
QTY OF EDEF, n Storage Pad
MEBANE BRIDGE WW1 I I