NC0027197_Renewal (Application)_20191121

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Governor Z ''
MICHAEL S.REGAN . «,..,, -
Secretary
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LINDA CULPEPPER NORTH CAROLINA
Director Environmental Quality
November 21, 2019
City of Shelby
Attn: David W. Hux, Dir. of Water Resources
PO Box 207
Shelby, NC 28151
Subject: Permit Renewal I
Application No. NC0027197
Shelby WTP
Cleveland County
Dear Applicant:
The Water Quality Permitting Section acknowledges the November 21, 2019 receipt of your permit renewal application
and supporting documentation. Your application will be assigned to a permit writer within the Section's NPDES WW
permitting branch. Per G.S. 150B-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. The
permit writer will contact you if additional information is required to complete your permit renewal. Please respond in a
timely manner to requests for additional information necessary to allow a complete review of the application and renewal
of the permit.
Information regarding the status of your renewal application can be found online using the Department of Environmental
Quality's Environmental Application Tracker at:
https://deq.nc.gov/permits-regulations/permit-guidance/environmental-application-tracker
If you have any additional questions about the permit, please contact the primary reviewer of the application using the
links available within the Application Tracker.
Sincerely, -
Wren Thedford
Administrative Assistant
Water Quality Permitting Section
ec: WQPS Laserfiche File w/application
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NORTH CAROLINA T ir 1
Post Office Box 207•Shelby, NC 28151-0207 f �
November 14, 2019
NCDENR
Division of Water Quality/ NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617 RECEIVED
NOV 21 2019
Subject: Shelby Water Treatment Plant
NPDES NC0027197— Renewal Application NCDEQIDWRINPDES
Dear NPDES Unit:
Attached you will find the City of Shelby's Water Treatment Plant NPDES Permit NC0027197 renewal
package. Our permit is set to expire May 31, 2020.
Please contact me at 704-484-6840 if you have any questions or if you need additional information.
Sincerely,
David Hux
Director of Water Resources
Cc: Brad Greene; Plant Operations Superintendent
Michael Mull; Plant Supervisor/ORC
Certified Mail 7019 1640 0001 8012 6688
www.cityofshelby.com

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 NC0027197
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 Shelby
Facility Name Shelby Water Treatment Plant
Mailing Address PO Box 207
City Shelby
State / Zip Code NC 28151-0207
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 801 West Grover Street
City Shelby
State / Zip Code NC 28150
County Cleveland
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 Shelby
Mailing Address PO Box 207
City Shelby
State / Zip Code NC 28151-0207
Telephone Number [phone]
Fax Number [phone]
4. Ownership Status:
Federal ❑ State ❑ Private ❑ Public
5. Type of treatment plant:
Page 1 of 3 Version 5/2012

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- Primary Intake First Broad River, Secondary Intake Broad River
7. Describe the treatment process(es) for the raw water:
Water is pumped from the river into a series of three reservoirs at the WTP. The raw water
is mixed and chemicals are added for coagulation. After mixing in the flocculators (12)
water flows into the settling basins (10) for solids settling and removal. The water then
flows through the filters (8) for filtering. After the filters corrosion inhibitor, fluoride, and
chlorine are added to the finish water and then pumped to the distribution system.
8. Describe the wastewater and the treatment process(es) for wastewater generated by the
facility:
Some storm water from the facility, online analyzer discharge water, filter backwash water,
wash down water, and residuals from the sedimentation basins flow to the residuals
lagoons. Backwash water is dechlorinated with sodium thiosulfate prior to entering the
lagoons. The discharge is analyzed periodically and flow discharge is measured. Reject
flow listed in item 11 below is an annual average of discharge from the lagoons and
includes other flows as listed above.
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: 7 days Duration: 4 to 6 hours
11. Plant design potable flowrate 12 MGD
Backwash or reject flow 0.096 MGD
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
Unnamed tributary of the First Broad 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
Page 2 of 3 Version 5/2012

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Fluoride Yes X No
Ammonia nitrogen / Chloramines Yes No X
Zinc-orthophosphate or sweetwater CP1236 Yes No X
List any other additives below:
Chlorine, Carbon, Caustic, sodium thiosulfate and F35 corrosion inhibitor
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].
Solids Handling Plan
16. NEW Applicants
Information needed in addition to items 1-15:
• New applicants are highly encouraged 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.
David W Hux Director of Water Resources
P inted narn of Per n Signing Title][ to./ pi l
Signature of Applic nt Date
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 3 of 3 Version 5/2012

City of Shelby - Water Treatment Plant
Schematic
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III Flocculator Pumping Station '+ Mixer
NPDES
II Settling Basins 1111 Hi Service Pumps Discharge Eh 4]
1111 Filters (2 MGD each) Residuals Lagoons in Solids
Alum 111::* Caustic D Carbon C donne 8.0 MGD
Sodium Thiosulfate Fluoride Corrosion Inhibitor
Copper Sulfate To Distribution

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ll - tv CltyofShelby Datum:NAD'�, NPDES Discharge OutFall 001 �ntn�b��nda ofibe Qty e}S�eby c°nveyanwa.Ublity bcalions shown ern
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. 's FiyS office Zone:North Carolina 3200 oficial boundary. used as a definitive means to locate
Scale:1"=200' Date. 12/21/07 utility features.

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
City of Shelby Water Treatment Plant; NC0027197 Renewal Broad
Sludge Management Plan
For
City of Shelby Water Treatment Plant
NPDES Permit#NC0027197
The City of Shelby operates a 12.0 MGD Water Treatment Facility located on 801 W.Grover Street. The
Water Treatment Facility has an NPDES Permit with the State of North Carolina to discharge water to an
unnamed tributary of the First Broad River. The water discharged to the stream is generated by the filter
washing and solids settling basins in the water treatment process. Some storm water from the water
plant site discharges to these lagoons
The system consists of a 30-inch line conveying the backwash water and sediment to two (2) — 1.5 MG
gravity lagoons located to the west of the of the water plant. These lagoons are each equipped with 6-
inch decant lines and valves. Solids are introduced to a single basin and allowed to settle. Once solids
are settled, the operators then control the decanting while meeting the requirements set forth in the
NPDES Permit for discharge.
The other basin is completely taken out of service and allowed to dry. Once dried the residuals are
removed with heavy equipment and trucked to an approved landfill for disposal.
Back-up Options
In the event of inclement weather or problems involving the disposal of water treatment residuals,the City
of Shelby would contract with a local firm for dewatering and disposal.