NC0088307_Renewal (Application)_20160506

James R.Flechtner,PE
S Cape Fear Executive Director
235 Government Center Drive
Public Utility Authe ffly Wilmington, -3 28403
l�7y Utility P i !0 ®® 8 6 910-332-6625
Stewardship.Sustainability.Service. [e-mail]
May 6, 2016
Mr. Wren Thedford
NC DENR/DWR/NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Re: Renewal Application - NPDES Permit NC0088307
New Hanover County Well System WTP
Cape Fear Public Utility Authority(CFPUA)
New Hanover County, North Carolina
Dear Mr.Thedford,
NPDES permit NC0088307 for the CFPUA's New Hanover County Well System WTP expires January 31,
2017 and its renewal application is due at DWR no later than August 4, 2016. In fulfillment of this
deadline,the necessary NPDES renewal application accompanies. It consists of the following
components:
1. NPDES Short Form C-WTP
2. New Hanover County Well System WTP Process Flow Diagram- includes flow volumes and point
of addition of chemicals
3. Topographic Map with latitude and longitude
Changes implemented at this facility since issuance of the last permit include the following:
1. Connection to the local POTW to allow for diverting of the waste stream from one Castle Hayne
treatment skid.
As a part of the current NPDES permit,CFPUA was required to monitor for DO,Temperature, and Total
Suspended Solids at the discharge location on the intra-coastal waterway twice per month for the
months of June through September, 2013. The purpose of the monitoring was to evaluate the impact
on the receiving stream. The samples were taken as required and the data indicated minimal, if any,
impact on the water quality of the receiving stream. Based on this information,CFPUA would like to
request this monitoring be deleted from the next permit period.

The following is a summary of the data:
76/11/13
Temperature Deg C DO : ss
MG/L MG/L
Upstream Downstream Upstream Downstream Upstream Downstream
27 27 7.4 7.5 27.5 30.6
/25/13 29 29 7.5 7.5 27.7 28.4
7/16/13 30 30 7.4 7.2 26.8 25.0
7/26/13 26 26 6.0 5.8 29.7 14.1
8/6/13 26 26 6.7 7.3 20.1 16.2
8/20/13 32 33 5.9 5.9 22.8 21.0
9/3/13 28 28 7.2 7.4 20.6 12.1
9/17/13 26 26 8.1 8.2 17.5 22.6
Max 32 33 8.1 8.2 29.7 30.6
Min 26 26 5.9 5.8 17.5 12.1
Please let me know if there are any questions or whether the application is deemed complete. If all
considerations are otherwise in order,we await receipt of a draft permit for our review.
Sincerely,
Ja a R. Flechtner, PE
Executive Director
CC: Mike Richardson
Frank Styers
Beth Eckert
John Malone
Ben Kearns

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Mail the complete application to:
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
NPDES Permit Number INCO088307
If you are completing this form in computer use the TAB key or the up - down arrows to moue 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 Cape fear Public Utility Authority
Facility Name New Hanover County Well System WTP
Mailing Address 235 Government Center Drive
City Wilmington
State / Zip Code NC
Telephone Number [phone]
Fax Number [phone]
e-mail Address [e-mail]
2. Location of facility producing discharge:
Check here if same as above ❑
Street Address or State Road 637 Groundwater Way
City Wilmington
State / Zip Code NC / 28411
County New Hanover
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 Cape Fear Public Utility Authority Attn: James R. Flechtner, PE,
Executive Director
Mailing Address 235 Government Center Drive
City Wilmington
State / Zip Code NC / 28403
Telephone Number [phone]
Fax Number [phone]
4. Ownership Status:
Federal ❑ State ❑ Private ❑ Public
Page ] of4 Version 5/2012

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
5. Type of treatment plant:
❑ 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)
Groundwater- Castle Hayne Aquifer and Pee Dee Aquifer
7. Describe the treatment process(es) for the raw water:
The raw water comes from the well field through separate lines containing water from either the
Castle Hayne or Pee Dee Aquifers. Once water enters the plant, the pH of the water is adjusted
and an anti-scalent is added. Water then flows thru spiral wound cartridge filters (5 micron),
then thru the nano filtration membranes where the water is separated into permeate and
concentrate (waste stream). At start up and shut down of the plant, raw water bypasses the
membrane and cartridge filters and flows into the concentrate line.
S. Describe the wastewater and the treatment process(es) for wastewater generated by the
facility:
The Concentrate waste stream consists of untreated raw source groundwater or concentrated
mineral content from the membrane treatment process. There is no treatment of concentrate
waste stream before discharge. There is also the ability to split the waste flow and discharge a
portion of the waste stream to the POTW from one Castle Hayne treatment skid.
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 6 MGD
Backwash or reject flow 2 MGD
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
Intracoastal Waterway - see attached map
Page 2 of 4 - Version 5/2012

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
13. Please list all water treatment additives, including cleaning chemicals or disinfection
treatments, that have the potential to be discharged.
Alum / aluminum sulfate Yes No X
Iron sulfate / ferrous sulfate Yes No X
Fluoride Yes x No
Ammonia nitrogen / Chloramines Yes No X
Zinc-orthophosphate or Sweetwater CP1236 Yes No X
List any other additives below:
Sulfuric Acid - pH Adjustment, Lavasol 7 - Cleaning Chemicals
Opticlean- F Sodium Metasilicate, SpectraGuard SC -Antiscalant,
Blended ortho-polyphosphate
14. Is this facility located on Indian country? (check one)
Yes ❑ No
15. Additional Information:
n 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 stormwaterl.
t Solids Handling Plan-There is no treatment of discharged concentrate stream; no solids
are present in concentrate stream; concentrated minerals are kept in a dissolved state
throughout the process.
16. NEW Applicants
Information needed in addition to items ]-15:
v New applicants are highly encouraged to contact a permit coordinator with the
NCDENR Customer Service Center.
Was the Customer Service Center contacted? ❑ Yes ❑ No
f Analyses of source water collected
r 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.
James R. Flectliner, PE Executive Director
Printed name of Person Signing Title
Sign t re of Applicant Date
Page 3 of 4 Version 5/2012

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
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. (16 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 5/2012

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PAT MCCRORY
Govemnr
DONALD R. VAN DER VAART
Water Resources S. JAY ZIMMERMAN
ENVIRONMENTAL QUALITY Dirccrnr
May 23, 2016
James R. Flechtner, PE
Cape Fear Public Utility Authority
235 Government Center Drive
Wilmington, NC 28403
Subject: Acknowledgement of Permit Renewal
Application No. NCO088307
Ogden Nanofiltration WTP
New Hanover County
Dear Permittee:
The Water Quality Permitting Section has received your permit renewal application on May 16,
2016. A member of the NPDES Unit will review your application. They will contact you if additional
information is required to complete your permit renewal. Per G.S. 15OB-3 your current permit does not
expire until permit decision on the application is made. Continuation of the current permit is contingent on
timely and sufficient application for renewal of the current permit. Please respond in a timely manner to
requests for additional information necessary to complete the permit application.
If you have any additional questions concerning renewal of the subject permit, please contact Tom
Belnick at 919-807-6390 or [e-mail].
Sincerely,
Wrex-Tkz Pard
Wren Thedford
Wastewater Branch
cc: Central Files
NPDES
Wilmington Regional Office
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh,Nonh Carolina 27699-1617 .
919-807-6300