NC0035807_Renewal (Application)_20150429

Altai
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald R. van der Vaart
Governor Secretary
April 29,2015
Leslie P. Carreiro
City of Asheville
North Fork WTP
3374 North Fork Left Fork Rd.
Black Mountain,NC 28711
Subject: Acknowledgement of Permit Renewal
Permit NC0035807
Buncombe County
Dear Permittee:
The NPDES Unit received your permit renewal application on April 23, 2015. A member of the
NPDES Unit will review your application. They will contact you if additional information is required to
complete your permit renewal. You should expect to receive a draft permit approximately 30-45 days
before your existing permit expires.
If you have any additional questions concerning renewal of the subject permit, please contact Maureen
Kinney(919) 807-6388.
Sincerely,
W reni 11A,e,a,fo-rot,
Wren Thedford
Wastewater Branch
cc: Central Files
Asheville Regional Office
NPDES Unit
1617 Mail Service Center,Raleigh,North Carolina 27699-1617
Location:512 N.Salisbury St.Raleigh,North Carolina 27604
Phone:[phone]\Fax:[phone]/Customer Service:1-877-623-6748
Internet::www.ncwater.orq
An Equal OpportunitylAffirmative Action Employer

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Mail the complete application to:
N. C. DENR / Division of Water Resources / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
NPDES Permit Number NC0035807
If you are completing this form in computer use the TAB key or the up - down arrows to move from one
field to the next. To check the boxes, click your mouse on top of the box. Otherwise,please print or type.
1. Contact Information:
Owner Name City of Asheville
Facility Name North Fork Water Treatment Plant
Mailing Address 3374 North Fork Left Fork Road
City Black Mountain RECFNEDIDENRIDWR
State / Zip Code NC, 28711 (\PR 2 fs 2015
Telephone Number [phone]
Fax Number [phone] Wale QSect
Permitting tan
e-mail Address [e-mail]
2. Location of facility producing discharge:
Check here if same as above LE
Street Address or State Road 3374 North Fork Left Fork Road
City Black Mountain
State / Zip Code NC, 28711
County Buncombe
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
Operator in Responsible Charge or ORC)
Name City of Asheville
Mailing Address 3374 North Fork Left Fork Road
City Black Mountain
State / Zip Code NC, 28711
Telephone Number [phone]
Fax Number [phone]
4. Ownership Status:
Federal ❑ State ❑ Private ❑ Public El
5. Type of treatment plant:
Page 1 of 4 Version 3/2014

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
® Conventional (Includes coagulation, flocculation, and sedimentation, usually followed by
filtration and disinfection)
❑ Ion Exchange (Sodium Cycle Cationic ion exchange)
❑ Green Sand Filter (No sodium recharge)
❑ Membrane Technology (RO, nanofiltration)
Check here if the treatment process also uses a water softener ❑
6. Description of source water(s) (i.e. groundwater, surface water)
Surface Water
7. Describe the treatment process(es) for the raw water:
• Pre-chlorination: Sodium Hypochlorite
• Coagulation/Flocculation: Aluminum Sulfate and flocculation basin
• Filtration: 6 dual media filters providing filtration and removal of flocc and
sediments
• Disinfection: Sodium Hypochlorite is added to provide post chlorination residual. CT
is met in a 5 million gallon, baffled Clear Well.
• Sodium Bicarbonate, Hydrofluorsilicic Acid, Zinc Orthophosphate and Caustic Soda
are added as the water enters the City of Asheville distribution system.
8. Describe the wastewater and the treatment process(es) for wastewater generated by the
facility:
• Waste water from the North Fork WTP consists of backwash water containing
removed sediments from the filtration and backwash process. This water also
contains residual chlorine and aluminum sulfate from the pre-chlorination and
coagulation/flocculation processes. Additional water is added from storm drainage
into lagoon #2.
• Treatment of this waste water is accomplished by a tiered waste water system made
up of three lagoons positioned in sequence at different elevations. Water is released
to lagoon #1 (182,000 gallon capacity) where primary settling occurs. Water flows
from lagoon #1 through an effluent structure to lagoon #2 (978,000 gallon capacity)
where further settling occurs. Water flows from lagoon #2 through an effluent
structure to Lagoon #3 (3 million gallon capacity). From the influent water travels
on the opposite end of lagoon #3 and is discharged through a valve control pipe into
the receiving water.
9. Number of separate discharge points: 1 Outfall Identification number(s) 001
10. Frequency of discharge: Continuous ® Intermittent ❑
If intermittent:
Days per week discharge occurs: Duration:
11. Plant design potable flowrate 31 MGD
Backwash or reject flow 0.0 - .624 mgd MGD
Page 2 of 4 Version 3/2014

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitudes
North Fork of the Swannanoa River
13. Please list all water treatment additives, including cleaning chemicals or disinfection
treatments, that have the potential to be discharged.
Alum / aluminum sulfate Yes X No
Iron sulfate / ferrous sulfate Yes No X
Fluoride Yes X No
Ammonia nitrogen / Chloramines Yes No X
Zinc-orthophosphate or sweetwater CP1236 Yes X No
List any other additives below:
Sodium Bicarbonate
Caustic Soda
Sodium Hypochlorite
14. Is this facility located on Indian country? (check one)
Yes ❑ No El
15. Additional Information:
• Provide a schematic of flow through the facility, include flow volumes at all points in
the water treatment process. The plan should show the point[s] of addition for
chemicals and all discharges routed to an outfall [including stormwater].
Attached
• Solids Handling Plan:
• Attached
16. NEW Applicants
Information needed in addition to items 1-15:
• New applicants are strongly recommended to contact a permit coordinator with the
NCDENR Customer Service Center.
Was the Customer Service Center contacted? ❑ Yes ❑ No
• Analyses of source water collected
• Engineering Alternative Analysis
• Discharges from Ion Exchange and Reverse Osmosis plants shall be evaluated using a
water quality model.
17. Applicant Certification
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge and belief such information is true, complete, and accurate.
Page 3 of 4 Version 3/2014

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Leslie P. Carreiro Superintendent-Water Production
Printed name of Person Signing Title
ignature of Applicant Da e
4
North Carolina General Statute 143-215.6(b)(2)provides that Any person who knowingly makes any false statement representation,or certification in any application,
record,report plan,or other document files or required to be maintained under Article 21 or regulations of the Environmental Management Commission implementing that
Article,or who falsifies,tampers with,or knowingly renders inaccurate any recording or monitoring device or method required to be operated or maintained under Article 21
or regulations of the Environmental Management Commission implementing that Article,shall be guilty of a misdemeanor punishable by a fine not to exceed$25,000,or by
imprisonment not to exceed six months,or by both. (18 U.S.C.Section 1001 provides a punishment by a fine of not more than$25,000 or imprisonment not more than 5
years,or both,for a similar offense.)
Page 4 of 4 Version 3/2014

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4
North Fork WTP Sludge Handling Plan for 2015
North Fork Water Treatment Plant
City of Asheville Water Resource Department
NRDES Permit NC0035807
Prepared For: NC DENR/DWR/NPDES Unit
Prepared By: Bill Hart,Supervisor,North Fork Water Treatment Plant
Date:April 16,2015
Currently solids are removed from North Fork WTP lagoons#1 and#2 on an annual basis.The Water
Production Division contracts sludge removal with a contractor who specializes in the collection and
removal of solids in a sludge form.These solids are agitated and pumped from each lagoon into a tanker
truck which is then transported to a location where they are then added to the Metropolitan Sewage
District sanitary sewer system for treatment.
In 2015 Bionomic, Inc. removed a total of 550,000 gallons of sludge from lagoons#1 and#2. Removal
was accomplished over a 7 day period.
Signatur /[.,t. ( J2/2€A.'
Date: Lf2443C 4720� 2O/f