NC0021121_Permit Issuance_19960212

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State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Govemor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
poloramiroftirrot
1-111\1 Ft
February 12,1996
Mr. Martin D. Wilson, Superintendent of Treatment Plants
City of Graham
P.O. Drawer 357
Graham, North Carolina 27253
Dear Mr. Wilson:
Subject: NPDES / Graham WWTP
NPDES Permit No. NC0021211
Alamance County
In accordance with your application for renewal of the current discharge permit, we are forwarding
herewith the subject State - NPDES 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
US Environmental Protection Agency dated December 6, 1983. In response to your letter received
January 22,1996 regarding the draft permit, the following comments are offered for your information.
• The Supplement to the Permit Cover Sheet has been changed to include the lime stabilization unit and
sludge storage unit.
• The mercury limit will remain in the permit. After one year of data have been collected, the City may
request that the Division review and reassess the limit and monitoring frequency for mercury.
• Upon completion of the coordination of stream collection data with the City of Burlington, the City
may request that the Division modify the permit to reflect the appropriate sampling scenario.
• The CBOD5 has been changed to BOD5.
• Because lead and cyanide are monitored through Graham's Long Term Monitoring Plan, the
monitoring for these parameters has been removed from the permit.
• Copper and zinc monitoring have been reduced to once per month.
• Based on your telephone conversation January 24 with Bo McMinn, Environmental Chemist with the
Division's Pretreatment Group, the questions in item 4 of your.letter have been clarified.
• The permit has also been modified to clarify the requirement for orthophosphate monitoring.
Orthophosphate monitoring should only be conducted during the months of June, July, August, and
September.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicative 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, Post Office Drawer 27447, Raleigh, North Carolina 27611 -7447. Unless such demand is
made, this decision shall be final and binding.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Please take notice this permit is not transferable. Part II, E.4. addresses the requirements to be
followed in case of change in ownership or control of this discharge. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Environmental Management
or permits required by the Division of Land Resources, 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 Susan Wilson at telephone
number [phone], extension 555.
Sincerely,
Original Sigilea 3y
David A. Goodrich
A. Preston Howard, Jr., P.E.
cc: Central Files
Winston-Salem Regional Office
Mr. Roosevelt Childress, EPA
Permits and Engineering Unit
Facility Assessment Unit
Aquatic Survey and Toxicology Unit

Permit No. NC0021211
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
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
Graham Wastewater Treatment Plant
on Gilbreath Road
north of Swepsonville
Alamance County
to receiving waters designated as the Haw River in the Cape Fear River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I,
II, and III hereof.
The permit shall become effective March 1,1996.
This permit and the authorization to discharge shall expire at midnight on January 31, 2001.
Signed this day February 12,1996.
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Environmental Management
By Authority of the Environmental Mangement Commission

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Permit No. NC0021211
SUPPLEMENT TO PERMIT COVER SHEET
City of Graham
Wastewater Treatment Plant
is hereby authorized to:
1. Continue to operate an existing 3.5 MGD wastewater treatment facility consisting of
mechanical bar screens, grit chambers, primary settling, extended aeration basin, intermediate
and final clarifiers, aerobic digesters, sand filters, post aeration, lime stabilization unit, and
sludge storage facility located at Graham Wastewater Treatment Plant, on Gilbreath Road,
north of Swepsonville, Alamance County (See Part III of this Permit), and
2. Discharge from said treatment works at the location specified on the attached map into the
Haw River which is classified a Class C NSW waters in the Cape Fear River Basin.

•
2
s
2'30"
CITI OF GRAHAM
HPDES # WC0021211
Mebane Quad
C 21SE •
Alauance County
•
2d7
820 000
FEET
36.00'
79' 22'30" '1 8yo 00o FEET 40
Mapped, edited, and published by the Geological Survey
ti
649
G50 20'

A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS SUMMER (April 1- October 31) Permit No. NC0021211
During the period beginning upon the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the pern ittee as specified below:
effluent Characteristics Discharge Limitations
Flow
BOD, 5-Day, 20°C
Total Suspended Residue**
NH3 as N
Dissolved Oxygen***
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Conductivity
Total Phosphorus
Orthophosphate (PO4 as P)
Total Nitrogen (NO2 + NO3 + TKN)
Copper
Chronic Toxicity****
Mercury
Zinc
Monthly. Avg,
3.5 MGD
12.0 mg/I
30.0 mg/I
4.0 mg/I
200.0 /100 ml
2.0 t mg/I
Monitoring Requlremejits
Measurement
Weekly Avg* Daily Max, Frequency
Continuous
Daily
Daily
Daily
Daily *
Daily *
.Daily
Daily *
Daily *
Weekly *
3/Week *
Monthly
Monthly
Quarterly
0.09 µg/I Weekly
Monthly
18.0 mg/I
45.0 mg/I
400.0 /100 ml
Tv
Recording
Composite
Composite
Composite
Grab
Grab
Grab
Grab
Grab
Composite
Composite
Composite
Composite
Composite
Composite
Composite
Liwatign
I or E
I,E
I,E
E
E,U,D
E,U,D
E
E,U,D
E,U,D
E,U,D
E,U,D
E •
E
E
E
E
* Sample locations: E - Effluent, I - Influent, U - Upstream at Highway 54, D - Downstream at NCSR 2158. 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.
Orthophosphate monitoring shall be conducted null during the months of June, July, August, and September (3/week at E, U, D). Total phosphorus and orthophosphate
monitoring shall be conducted on the same days that instream monitoring is performed.
All stream samples shall be grab samples.
** The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85 % removal).
*** The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/1.
+ Compliance shall be based upon quarterly average of weekly samples.
**** Chronic Toxicity (Ceriodaphnia) PIP at 14%; March, June, September, and December; See Part III, Condition G.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored daily at the effluent by grab sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
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•
A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS WINTER (November 1- March 31) Permit No. N00021211
During the period beginning upon the effective date of the permit and lasting until expiration, the Pennittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations
Flow
BOD, 5-Day, 20°C**
Total Suspended Residue**
NH3 as N
Dissolved Oxygen***
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Conductivity
Total Phosphorus
Total Nitrogen (NO2 + NO3 + TKN)
Copper
Chronic Toxicity****
Mercury
Zinc
Monthly. Avg,
3.5 M3D
24.0 mg/I
30.0 mg/I
8.0 mg/I
Monitoring Requirements
Measurement
Weekly Avg, Daily Max, Frequency Tyn, e,
Continuous Recording
Daily Composite
Daily Composite
Daily Composite
Daily * Grab
Daily * Grab
Daily Grab
Daily * Grab
Daily * Grab
Weekly * Composite
Monthly Composite
Monthly Composite
Quarterly Composite
0.09 µg / I Weekly Composite
Monthly Composite
36.0 mg/t
45.0 mg/I
200.0 /100 mi 400.0 /100 mt
2.0 t mg/I
Ifignuat
Location
IorE
I,E
I,E
E
E,U,D
E,U,D
E
E,U,D
E,U,D
E,U,D
E
E
E
E
E
* Sample locations: E - Effluent, I - Influent, U - Upstream at Highway 54, D - Downstream at NCSR 2158. 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.
Total phosphorus monitoring shall be conducted on the same days that instream monitoring is performed.
All stream samples shall be grab samples.
** The monthly average effluent BOD and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85 % removal).
*** The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/l.
+ Compliance shall be based upon quarterly average of weekly samples.
**** Chronic Toxicity (Ceriodaphnia) PIP at 14%; March, June, September, and December; See Part III, Condition G.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored daily at the effluent by grab sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

4Part III Permit No. NC0021211
G. CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic
Bioassay Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or
significant mortality is 14% (defined as treatment two in the North Carolina procedure document).
The permit holder shall perform quarterly monitoring using this procedure to establish compliance
with the permit condition. The first test will be performed after thirty days from the effective date
of this permit 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, DEM Form AT-1 (original) is to be sent to the following address:
Attention:
Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
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 any single quarterly monitoring indicate a failure to meet specified limits, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, 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 Environmental Management indicate potential impacts to the receiving stream, this
permit may be re -opened and modified to include'altemate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival and appropriate environmental controls, shall constitute an invalid test
and will require immediate retesting(within 30 days of initial monitoring event).. Failure to submit
suitable test results will constitute noncompliance with monitoring requirements.