NC0045292_Permit Issuance_20110628

irciDNNK
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
June 28, 2011
Mr. Victor R. Quick, Utilities Director
City of Graham
PO Drawer 357
Graham, NC 27253
Dee Freeman
Secretary
Subject: Issuance of NPDES Permit NCO045292
Graham/Mebane WTP — Class PC-1
Alamance County
Dear Mr. Quick:
Division (DWQ) 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).
Your April 12, 2011 letter to the DWQ requested the following changes to the draft permit:
1. "The Monitoring requirement for flow remains as they are in the existing permit."
a. The Measurement Frequency has been changed to 2/month and the Sample type is
changed to Instantaneous with the duration of the flow also required to be reported
(Footnote 1).
2. "A footnote to require Monitoring only if fluoride is being used as part of the treatment process."
a. Footnote #3 had been be added requiring monitoring only if the permittee backwashes with
fluoridated finish water.
3. "A footnote identical to the existing permit for Aluminum and Iron."
a. Footnote #4 has been added requiring monitoring only if alum is used as part of the
treatment process.
b. The Monitoring requirement for Iron is part of the revised "Water Treatment Strategy
(October 2009) and must remain in your permit.
4. "Remove the requirement to continue monitoring for total phosphorus."
a. The Quarterly Monitoring requirement for Total Nitrogen and Total Phosphorus is part of the
revised - Water Treatment Strategy (October 2009) - which indicates that facilities should
monitor for nutrients if discharging to Nutrient Sensitive waters (NSW). Your facility
discharges to Back Creek classified as C — NSW which requires these two monitoring
requirements in your permit.
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 North Carolina
Internet: http:llportal.ncdenr.orgluuebhvglhome � vvatura!!ff
An Equal Opportunity 1 Affirmative Action Employer

The following modifications in the February 16, 2011 draft permit remain in the final permit:
• The classification of Big Laurel Creek has been changed to C — Trout ORW.
• The site map has been updated to reflect latitude & longitude values for your discharge point.
• Parameter codes have been added to the effluent page.
• Footnotes have been modified and added.
• Additional monitoring requirements have been added for the following Pollutants of Concern:
o Turbidity — 2/month sampling.
o Copper — Quarterly sampling.
o Zinc — Quarterly sampling.
o Manganese — Quarterly sampling
o Whole Effluent Toxicity (Monitoring only) — Quarterly sampling.
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 150E of the North
Carolina General Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service Center,
Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may require
modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to
obtain other permits which may be required by the Division of Water Quality or permits required by the Division
of Land Resources, the Coastal Area Management Act or any other Federal or Local governmental permit that
may be required. If you have any questions concerning this permit, please contact Bob Guerra at telephone
number [phone] or email at (bob.guerra aOncdenr.00v).
ince ely,
Coleen H. Sullins
Enclosure: NPDES Permit NC0045292
cc: Winston-Salem Regional Office / Surface Water Protection — Corey Basinger
Aquatic Toxicology / Susan Meadows
NPDES Unit
Central files

Permit NCO045292 •
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 Graham
is hereby authorized to discharge wastewater from a facility located at the
Graham/Mebane WTP
1824 US Highway 70
West of Mebane
Alamance County
to receiving waters designated as Back Creek in the Cape Fear 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 August 1, 2011.
This permit and authorization to discharge shall expire at midnight on May 31, 2016.
Signed this day June 28, 2011.
Cole . Sullins, Director
Di on of Water Quality
By Authority of the Environmental Management Commission

Permit NC00452921
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 Graham is hereby authorized to:
1. Continue to operate a Conventional Water Treatment Plant with a discharge of filter
backwash. Wastewater treatment components consist of:
• Three (3) 500,000 gallon backwash and Sludge lagoons
• Dechlorination
The facility is located at the Graham/Mebane WTP, on 1824 US Highway 70, West of
Mebane in Alamance County.
2. Discharge from said treatment works at the location specified on the attached map into
Back Creek, classified C - NSW waters in the Cape Fear River Basin.

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Back Creek`
City of Graham
Graham /Mebane WTP
Facility
Location
Latitude: 36° 05' 50" N State Grid: Mebane
Longitude: 790 29' 10" W Permitted Flow: N/A
Receiving Stream: Back.Creek Drainage Basin: Cape Fear Basin
Stream Class: C-NSW Sub-Basin/HUC: 03-06-02/03030002
not to scale
NPDE S Permit No. NCO045292
North Alamance County

• t
-Permit NCO045292
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of this 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:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample
Location
50050 - Flow
2/Month
Instantaneous'
Effluent
00530 —Total Suspended Solids
30 mg/L
45 mg/L
2/Month
Grab
Effluent
00400 - pH
6.0 — 9.0 s.u.
2/Month
Grab
Effluent
50060 - Total Residual Chlorine
28 pg/L
2/Month
Grab
Effluent
00076 — Turbidity
2/Month
Grab
Effluent
01105 - Aluminum3
Quarterly4
Grab
Effluent
01045 -Total Iron
Quarterly4
Grab
Effluent
00951 —Total Fluorides
Quarterly4
Grab
Effluent
01042 - Total Copper
Quarterly4
Grab
Effluent
01055 - Manganese
Quarterly4
Grab
Effluent
00665 - Total Phosphorus (TP)
Quarterly
Grab
Effluent
00600 - Total Nitrogen (TN)6
Quarterly
Grab
Effluent
TGP3B - Whole Effluent Toxicity
Monitoring 7Quarterly
Grab
Effluent
Footnotes:
1) For Instantaneous flow monitoring the duration of the discharges must be reported.
2) 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.
3) Aluminum monitoring is required only if alum is used as part of the treatment process.
4) Parameter should be monitored in conjunction with toxicity test.
5) Fluoride shall be monitored if facility backwashes with fluoridated finish water
6) TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl Nitrogen, and NO3-N and NO2-N
are Nitrate and Nitrite Nitrogen, respectively.
7) Chronic Toxicity Monitoring P/F (Cedodaphnia Dubia) @ 10.87 %, during the months of March, June, September,
and December. See Part I, Condition A. (2.). Further studies will be required to determine the cause of toxicity, if
any. The collection of samples shall coincide with the sampling of other parameters.
There shall be no discharge of floating solids or visible foam in other than trace amounts
All samples collected should be of a representative discharge.

• Permit NCO045292
A. (2.) CHRONIC TOXICITY MONITORING (QRTRLY)
The permittee shall conduct uq arterlY chronic toxicity tests using test procedures outlined in the "North
Carolina (Ceriodaphnia Dubia) Chronic Effluent Bioassay Procedure," Revised February 1998, or
subsequent versions.
The effluent concentration defined as treatment two in the procedure document is 10.87 %. The testing shall be
performed as a Ceriodaphnia dubia 7day pass/fail test. 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.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B.
Additionally, DWQ Form AT-1 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Section
1621 Mail Service Center
Raleigh, N.C. 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 and accurate and include all supporting chemical/physical measurements performed
in association with the toxicity tests, as well as all dose/response data. 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, then monthly
monitoring will begin immediately. Upon submission of a valid test, this monthly test requirement will revert to
quarterly in the months specified above.
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
alternate monitoring requirements or limits.
If the Permittee monitors any pollutant more frequently than required by this permit, the results of such
monitoring shall be included in the calculation & reporting of the data submitted on the DMR & all AT Forms
submitted.
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.

Ti#g of ( a4am
P.O. Drawer 357
201 South Main Street
Graham, North Carolina 27253
Tel: [phone] / Fax: [phone]
�O `"
U ,�ti
April 12, 2011 a
Bob Guerra
NCDENR/DWQ
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Draft NPDES Permit No. NCO045292
Graham -Mebane WTP PC-1
Alamance County
Dear Mr. Guerra:
The City of Graham is in receipt of Draft NPDES Permit No. NCO045292 dated March 16,
2011. After review of the proposed requirements associated with this Draft Permit, the City has
the following comments and requests to the Division of Water Quality/NPDES Unit.
Currently the City is required to monitor flow weekly and estimate the flow of the
effluent. The facility operates a PC-1 Lagoon system that receives flow intermittently only
when the facility backwashes filters, re -washes filters, or removes solids from the
sedimentation basins. The lagoons only discharge in the event they are receiving flow under
these conditions. The draft permit changes this requirement to continuous recorded
monitoring of the effluent. In addition to not having a continuous discharge, the city has
received a cost estimate of $150,000 to install continuous flow monitoring at this facility. In
light of the Governor's Executive Order No. 70 and the City not experiencing any problems
reporting estimated flows, which to my knowledge is not a contaminant, this is a financial
burden the City did not expect, especially during the current economic times when all of our
budgets are strained. The City would request that the monitoring requirements remain as they
are in our existing permit. In the event there is some underlying EPA requirement that exist
and DWQ has no option other than to require this, the City request that DWQ provide a
compliance schedule for engineering, NCDENR plan review and authorization to construct,
construction, etc. of at least 18 to 24 months to comply with this requirement.
The draft permit includes fluoride monitoring which is a requirement of our current
permit. The City has been monitoring fluoride for four (4) years and the results have never
exceeded a value greater than 0.3 mg/L. It is important to note that only two samples resulted
in 0.3 mg/I during this four year period. All other samples analyzed resulted in values of 0.2
mg/L, 0.1 mg/L, or <0.1 mg/L. These are all typical of the natural fluoride levels found in the

Cape Fear River Basin. (Note: The City reported 2.0 mg/L in December of 2010 in error. The
actual result was 0.2 mg/L. An amended DMR to reflect this correction has been submitted to
DWQ/CENTRAL FILES.) The City is planning to discontinue the use of fluoride within the next
12-24 months. Additionally, based on a Position Statement issued by NCDENR/Public Water
Supply Section, the City has reduced the amount of fluoride added to the drinking water from
1.0 mg/L to 0.7 mg/L. (A copy of this Position Statement is enclosed for your review.) The
facility is actually adding less fluoride now than it was the four previous years. Based on
historical laboratory results and this additional information provided, the City requests DWQ
remove the required monitoring for fluoride. In the event that the City discontinues the use of
fluoride, at the very least, the City requests a footnote to require monitoring only if fluoride is
being used as part of the treatment process.
The draft permit requires the facility to monitor for both iron and aluminum. Only one
or the other of these metals will ever be used in the drinking water process. The City requests a
footnote identical to our current permit for these two constituents. The current permit requires
monitoring only if they (iron or aluminum) are used as part of the treatment process.
The City is aware of the concerns both EPA and NCDENR has with the control of
nutrients entering our receiving streams. DWQ required monitoring for total nitrogen and total
phosphorus from this facility in our NPDES Permit dated February 14, 2007. Upon review of the
last four years of data the City has had only three samples with detectible values. The highest
value reported was 0.11 mg/L TP in July, 2008. The majority of the samples analyzed resulted in
values that were reported as < 0.05 mg/L TP. It is apparent that this facility is not contributing a
total phosphorus load to the receiving stream that would cause any concern of nutrient annual
mass loading. The City requests DWQ consider removing the requirement to continue
monitoring for total phosphorus.
Thank you for your consideration of these comments and requests. Should you have
any questions, please contact me at 336-570-6721.
Siky,
Victor R. Quick
Utilities Director
Cc: Chris Rollins, City Manager
Mike Carson, Treatment Plant Superintendent

Guerra, Bob
From:
Mauney, Steve
Sent:
Monday, March 28, 2011 9:40 AM
To:
Guerra, Bob
Cc:
Basinger, Corey
Subject:
RE: Graham -Mebane WTP
BOB -The draft permit looks fine.
Steve Mauney
NC DENR Winston-Salem Regional Office
Division of Water Quality, Water Quality Section
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]
Main # [phone]
FAX: [phone]
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
From: Guerra, Bob
Sent: Monday, March 28, 2011 6:52 AM
To: Mauney, Steve
Subject: RE: Graham -Mebane WTP
9Per lour request please find the draft permit which went out to pubfic notice on 3-16-11.
From: Weaver, Charles
Sent: Tuesday, March 22, 20119:00 AM
To: Mauney, Steve
Cc: Guerra, Bob
Subject: RE: Graham -Mebane WTP
Steve — Bob is out until 3/28/2011. I don't have access to his computer. Sorry.
Bob — when you get back, follow up with Steve on this one.
CHW
From: Mauney, Steve
Sent: Monday, March 21, 2011 1:57 PM
To: Weaver, Charles
Subject: FW: Graham -Mebane WTP
Do you have access to this draft? If so, please forward it to me as Bob is out this week.
Steve Mauney
NC DENR Winston-Salem Regional Office
Division of Water Quality, Water Quality Section
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone]

AFFIDAVIT OF INSERTION OF ADVERTISMENT
The Times -News Publishing Company
Burlington, NC
Alamance County
I, Debbie Shue, Legal Advertising Manager of the Times -News Publishing Co.,
do certify that the advertisement of entitled
PUBLIC NOTICE NORTH CAROLINA ENVIRONMENTAL
MANAGEMENT COMMISSION/NPDES UNIT
Measuring 62 LINES appeared in The Times -News, a newspaper published in Alamance
County, Burlington, NC, in issues of
March 17, 2011
Order 4 22582335 / 22587412
Legal Advertising Manager
Sworn to and subscribed before me thisa day of Ci/) czj , 2011
My
< U=
Puv1"
Public Notice
North Carolina
Environmental
Management
Commission/NPDES
Unit
1617 Mail Service
Center
Raleigh, NC
27699-1617
Notice of Intent to
Issue a NPDES
Wastewater Permit
The North Carolina Emi
ronmental Management
Commission proposes to
issue a NPUES waste-
water discharge permit to
the person(s) listed below.
Written comments regard-
ing the proposed forms:
will be accepted until 30
days after the publish date
of this notice. The Director
of the NC Division of Water
Quality IQWQI may hold a
public hearing should there
be a significant degree of
Public interest. Please mail
comments and/or informa-
tion requests to DWQ at
the above address. Inter-
ested persons may visit
the DWQ at 512 N. Salis-
bury Street, Raleigh, NC to
review information on file.
Additional information on
NPDES permits and this
notice may be found on
our website:
http://portal. cdenr.org/w
eb/wq/swp/ps/npdes/tale
near, or by calling )919)
607-6304,
City of Graham requested
renewal of permit
NCO045292 for the
Graham/Mebane WTP in
Alamance County, this
permitted discharge is 6h
ter backwash wastewater
to Back Creek, Cape Fear
River Basin.
March 17, 2011
Angelia Ross Li -
otary Public
expires: January 20, 2015

Guerra, Bob
From: Victor Quick [[e-mail]]
Sent: Friday, March 04, 2011 3:35 PM
To: Guerra, Bob
Subject: Graham -Mebane Water Plant NPDES#NC0045292
First let me apologize as I failed to get the GPS coordinates earlier this week and just thought about it the afternoon. I
went out and shot the point this afternoon but our GIS personnel is out of the office today. I should have this
information the first of the week. (Monday or Tuesday at the latest.)
Thanks for the phone call last week as I believe that effort will help in the issuance of our new permit. Per our
conversation I wish to make the following comments:
,>---The City of graham uses no type of Zinc product or Chloramines prior to backwash and request that no
monitoring be required for these constituents.
!'Based on results of many years of monitoring, I would request that the city be able to discontinue Upstream and
Downstream Monitoring for this outfall.
3. 1 nderstand the reasoning of continuing to monitor for Fluoride, but our results have been negligible for the
st 5 years. Public Water Supply has recently issued new guidance for fluoride which will further lower the
fluoride concentration in the water. Additionally, the city is investigating the possibility of discontinuing adding
fluoride to the drinking water. I would request a footnote for fluoride that requires monitoring only if we are
�--meter.
dmg fluoride. This would reflect a similar footnote like we currently have for Iron.
f74. e discussed recorded flow monitoring. Our discharge is intermittent and recorded through our backwash
1 I would request that the city be able to continue recording instantaneous flow as we currently do.
5. You advised me that we would be required to perform a quarterly WET analysis of our discharge at possibly 90%
concentration. I have been unable to determine the 7Q10 of this receiving stream. I do however request a
much lower concentrations based on the following information. NCDENR requires the city to discharge 5
CFS/day (3.22 MGD)under normal conditions. Even if no discharge is occurring over the spillway this amount is
bypassing the dam to protect the integrity of the creek. Obviously if water is coming over the spillway, there is
an even greater flow in the creek. Our average discharge represents about 7% of the flow assuming no water..is-----
coming over the spillway so in rea ity outage is much lower. Du _ a s te_o#_e ergency (Drought
Conditions) we are allowed to reduce the amount of pass -through flo " 0 2.32 FS/da MGD) which has
not occurred since the drought of 2006-07. Even under these extreme con i ions our discharge represents only
12%of the creek flow. For this reason I would request you revise the WET percent concentration as this clearly
proves our concentration as percent flow is much lower. --
6. If possible I would request that DWQ e-mail me a copy of the preliminary draft permit for a quick review prior to
officially issuing the draft. This would enable me to respond and provide for the permit to be pretty much a
"done deal" when you issue the draft.
Again, Thanks for your call and the opportunity to contribute comments that will hopefully help expedite this
process. Have a great weekend.
victor R. Quick
UtiCities Director
City of Graham
P.O. Drawer 357
Graham, NC 27253
[phone]

FACT SHEET - COMPLEX EXPEDITED PERMIT RENEWAL
Permit Writer/Date
Bob Guerra / 6-24-11
Permit Number
NCO045292
Facility Name
Graham / Mebane WTP PC-1
Basin Name/Sub-basin number
Cape Fear River / 03-06-02 / HUC 03030002
Receiving Stream
Back Creek
Stream Classification in Permit
C - NSW
Does permit need Daily Max NH3 limits?
No
Does permit need TRC limits/language?
New language added
Does permit have toxicity testing?
Newly added per WTP Strategy at 10.87 IWC
Does permit have Special Conditions?
Just Tox testing
Does permit have instream monitoring?
Remove per permittee request and WTP strategy
Is the stream impaired on 303 d list)?
No
Any obvious compliance concerns?
One NOV for Late DMR 07-2007
Permit renewal information
Facility does not use Zinc or Chloramines prior to backwash.
Revise 7Q10 as it relates to Dam releases. IWC calculated at
10.87 % which was included in WET test criteria.
Current expiration date
05-31-2011
New expiration date
05-31-2016
Comments received on Draft Permit?
Yes Requests addressed and proposed changes include in
final permit
Chanaes to the Previous Permit:
This draft permit contains the following changes from your existing permit:
• Footnotes have been modified
• Instream Turbidity sampling has been deleted and changed to Effluent monitoring only.
• TRC Daily Maximum limit changed from 17ug/L to 28 ug/L per submitted 7Q10 flow data from facility.
• Effluent limits and Monitoring requirements for Settleable Solids have been deleted.
• Sampling frequencies have been changed for:
o Flow measurement to 2/ Month
o Flow sampling from Estimate to Instantaneous
o pH from weekly to 2/month
D Aluminum from Weekly to Quarterly.
o Iron from Weekly to Quarterly.
o Fluoride from Monthly to Quarterly
o Total Residual Chlorine from Weekly to 2/Month
• The site map has been updated to reflect corrected Iat & long values for your discharge point.
• Additional monitoring requirements have been added for the following Pollutants of Concern:
o Copper — Quarterly sampling.
o Manganese — Quarterly sampling.
o Total Phosphorus — Quarterly sampling
o Total Nitrogen — Quarterly sampling
o Whole Effluent Toxicity (Monitoring only) — Quarterly sampling.
BIMS Downloads:
Permit enforcement history: No reported enforcement actions during this permit timeframe
DMR Parameter Values Export: (2006 — 2010)
Tits
Flow
Fluoride
pH
Aluminum
TRC
Monthly
Average
5.145 mg/L
0.182 MGD (Estimate)
0.068 mg/L
6.534 su
0.685 mgtL
8.54 ug/L
Daily
Average
3.613 mg/L
0.573 MGD
0.063 mgtL
6.86 su
0.678 mg/L
12.59 ugtL

ti
11
culations
Graham/Mebane WTP
Assume upstream TRC level = 0
NCO045292
Assume upstream Fecal level = 0
Prepared By: RLG
Check Box if WTP Facility ❑
Enter Design Flow (MGD):
0.1831; : Enter Upstream NH3-N Level (mg/L):
Enter s7Q10(cfs):
2.326
Enter w7Q10 (cfs):
Total Residual Chlorine
Ammonia (NH3 as N)
(summer)
7Q10 (CFS)
2.325
7Q10 (CFS)
2.325
DESIGN FLOW (MGD)
0.183
DESIGN FLOW (MGD)
0.183
DESIGN FLOW (CFS)
0.28365
DESIGN FLOW (CFS)
0.28365
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
10
UPS BACKGROUND LEVEL {I
0
UPS BACKGROUND LEVEL (1
0.000
IWC (%)
10.87
IWC (%)
10.87
Allowable Conc. (ug/1)
28
Allowable Conc. (mg/1)
9.20
Ammonia (NH3 as N)
(winter)
7Q10 (CFS)
0
Fecal Limit
2001100ml
DESIGN FLOW (MGD)
0.183
(If DF >331; Monitor)
DESIGN FLOW (CFS)
0.28365
(If DF <331; Limit)
STREAM STD (MG/L)
Dilution Factor (DF)
9.20
UPS BACKGROUND LEVEL (1
0.000
IWC (%)
100.00
Allowable Conc. (mg/1)
1.80
INPDES Servor/Current Versions/IWC
Daily MAX
35.0 mg/L
6/22/2011

CEt of (6ra4am
P.O. Drawer 357
201 South Main Street
Graham, North Carolina 27253
Tel: [phone] / Fax: [phone]
November 17, 2010
Mrs. Dina Sprinkle
NCDENR 1 DWQ
Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
RE: Renewal for NPDES Permit No. NCO045292
City of Graham, Alamance County
Dear Mrs. Sprinkle:
The City of Graham request renewal for NPDES Permit No. NCO045292 for the
operation of alum residuals lagoons at the Graham -Mebane Water Treatment Plant.
Please find enclosed the following required items in the city's application package.
1. This cover letter and two copies.
2. The original and two copies of the signed application including facility location
map and process schematic.
3. Three copies of Authorized Representative delegation letter.
4. One signed original and two copies of the narrative description of the Sludge
Management Plan for the facility.
Please call me at 336.570.6721 if you have any questions or need additional
information regarding this application package.
Sincerel ,
4 NOA.C�
Victor R. Quick
Utilities Director
Cc: Chris Rollins, Manager, City of Graham
Mike Carson, Supervisor, Graham -Mebane Water Plant

Process Schematic
Graham -Mebane WTP
Process Schematic 6ffi-8/05)
Raw Pumps
Design Cap. 12 MGD 3 x 6.0 MGD Graham4fabane Lake 650
Avg. Production 4.5 MGD 1 x 3.0 a250 Bil gal
Built 1976 Intake
Expanded 2001-03
n f NaOH
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NaOH Sedimentation
NaO r_ WCWeis
(ea.. lt.) E -
Pol mer o t
Flocculaior KMNO o Pjt
Alum A&MM (ootl
Polymer
Flash Mixer
1000 KW E
Aux GenSet Sedimentation Flocculator
Full SW Capadly ' i'ers 4 Elev.
i i • Tank
IF
f �NaOH
rAI
NaOCI
XSil+ b ; Fhtished Pumps
�► Pltos to r r r' 33.0 MG 3.0 MG 3 x 4.0 MGD-Graham Dist.
2 x 2.5 - Mebane System
• ♦ 1 x 3.5 - Mebane
Na l Finished Water Storage ;
I% mmonfa Ammonia (ontl
I NaOCI
I
Supernate to Back Creek
— • • — . ' — l . — .. — .. — • Sludge to Land Application
B/W & Sludge Lagoons
0.5 MG each
DENR 38M (Re VtW 9.97) Side B
Publw wow Supply section (Review 9.00)

Catty of (&a4am
P.O. Drawer 357
201 South Main Street
Graham, North Carolina 27253
Tel: [phone] / Fax: [phone]
September 14, 2006
Alan W. Klimek, P.E., Director
NCDENR, Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Mr. Klimek -
In compliance with permitting requirements all applications, reports, or
information submitted to the Director are to be signed by the City Manager or his duly
authorized representative. Additionally regulations state that if a duly authorized
representative is designated, it must be done in writing to the Director by the City
Manager.
By this letter, the City of Graham is notifying the Division of Water Quality that
this authority to sign as "Permittee" is given to the individual holding the position of
Utilities Director. The individual currently in this position is Victor R. Quick. In the
event the position becomes vacant, the City Manager will sign until the position is filled.
This authority is given for the following permits currently issued to the City of
Graham.
NPDES Permit # NCO045292 (Graham -Mebane Water Treatment Plant)
NPDES Permit # NCO021211 ( Graham Wastewater Treatment Plant)
Permit # NCG110021 (Wastewater Treatment Plant Stormwater)
Permit # WQ0003824 (Land Application)
Permit # WQCS00065 (Collection System)
If you have any questions, please call me at 336.570.6700 or write to my attention
to the address above.
' r ,
Chris Rollins
City Manager
Cc: NPDES Point Source Unit
PERCS Unit
Stormwater and General Permits Unit
Aquifer Protection Section

RESIDUALS MANAGEMENT PLAN
GRAHAM-MEBANE WATER TREATMENT PLANT
NPDES PERMIT No. NCO045292
The Graham -Mebane Water Treatment Plant uses three 500,000
gallon lagoons to settle and store the periodic discharge of residuals from the
water treatment process. Two lagoons have earthen sides with cement
bottoms and one has cement sides and earthen bottom. The supernatant is
discharged to Back Creek in accordance with our current NPDES Permit.
The Alum residuals are removed at approximate four to six month
intervals. The City has a contract with Synagro, Inc. to remove the residuals
from the lagoons. The residuals are pumped into 6500 gallon tanker trucks
and hauled off to be land applied. The City has its own farm and operates a
land application program in accordance with our Non -Discharge Permit,
WQ0003824. There are currently 89.4 acres permitted for land application.
The Alum Residuals are surface applied and co -mingled on the fields with
the BioSolids generated from the City's Wastewater Treatment Facility in
accordance with the permit restrictions.
A fescue cover crop is maintained on the fields and is harvested and
used for cattle feed. Fields are maintained and crops harvested in
accordance with the permit requirements.
Nutrient and metal loadings and application rates are calculated and
reported in accordance with WQ0003824 requirements.
All land application activities are performed in accordance with the
WQ0003824 Non -Discharge Permit requirements and EPA 40 CFR Part 503
federal regulations.
Victor R. Quick
Utilities Director
City of Graham