NC0089290_Application_20160322

WILLIAM J. MARKLIN, III
Mayor =
Commissioners:
ROB TAYLOR, Mayor Pro Tern
JOHNNYFRYE
LASH GAITHER SANFORD, JR.
AMY VAUGHAN-JONES
BRENT WARD
March 22,2016
Ms. Wren Thedford
J
o w 0/
NC DEQ./ DWR / NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
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CHRISTINE W. BRALLEY
// Town Manager
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INCORPORATED 1839
171 S. CLEMENT STREET
MOCKSVILLE, NC 27028
HENRY P. VAN HOY II
Town Attorney
Subject: Town of Mocksville-Hugh A. Lagle Water Treatment Plant Permit Renewal
Package NPDES NCO089290
Dear Permitting Unit:
The Town of Mocksville appreciates the opportunity to submit the NPDES renewal
application package. Please find enclosed (1) one original and (2) two copies of the
following:
• NPDES Short Form C-WTP
• WTP and WWTP Process Schematic
.• Sludge Handling Plan
After careful review of the NPDES Permit issued in 2013, the Town is requesting that the
upstream and downstream monitoring requirements be removed from the permit as
these requirements are not consistent with permits issued to water treatment plant
dischargers in North Carolina.
If the Town of Mocksville can be of any further assistance -or additional information is
needed, please contact me at 336-753-6700 or Tom Johnson at 252-419-2199.
Sincerely,
Christine Bralley
Town Manager
Enclosure(s): NPDES Renewal Package
PHONE: [phone] • FAX: [phone]
www.mocksvillenc.org

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 INCO089290
V, f 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 Town of Mocksville
Facility Name Hugh A. Lagle WTP
Mailing Address 171 Clement Street
City Mocksville
State / Zip Code NC, 27028
Telephone Number [phone]
Fax Number ( )
e-mail Address [e-mail]
2. Location of facility producing discharge:
Check here if same as above ❑
Street Address or State Road 771 Sanford Avenue
City Mocksville
State / Zip Code NC
County Davie
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 Envirolink, Inc.
Mailing Address PO Box 670
City Bailey
State / Zip Code NC, 27807
Telephone Number [phone]
Fax Number [phone]
4. Ownership Status:
Federal ❑ State ❑ Private ❑ Public
Page 1 of 3 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) (Le. groundwater, surface water)
The Water Treatment Plant withdraws surface water from Hunting Creek.
7. Describe the treatment process(es) for the raw water:
Raw water is pumped from the water station to the water treatment plant where poly aluminum
chloride is added at the flash mixer for coagulation and flocculation, water travels to the
sedimentation basins and then to the filters. The filtered water is disinfected with chlorine gas
and sodium hydroxide is used for pH adjustment and water is pumped to the distribution
system and elevated storage tanks in Town.
8. Describe the wastewater and the treatment process(es) for wastewater generated by the
facility:
The sedimentation basin solids and the filter backwash water is sent to two equalization storage
tanks onsite. The solids are allowed to settle and the clear water is decanted from the
equalization storage tanks, dechlorinated and is discharged to an UT to Bear Creek. Once there
are enough residuals to haul, the Town's land application contractor will pump the residuals
from the equalization tank to land apply.
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 Duration: 1 hour
11. Plant design potable flowrate 2.0 MGD
Backwash or reject flow 0.080 MGD
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
UT to Bear Creek
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
Page 2 of 3 Version 5/2012

NPDES PERMIT APPLICATION - SHORT FORK! C - WTP
For discharges associated with water treatment plants
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:
Potassium Permanganate, Poly Aluminum Chloride, Sodium Hydroxide,
Poly-ortho phosphate blend, and Chlorine gas
14. Is this facility located on Indian country? (check one)
Yes ❑ No
15. Additional Information:
v 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 1-1 S:
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
v 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.
Christine Brallev Town Manager
ted name of Person Signing Title
. 1- `"-Z— M
of Applicant
Date
North Carolina General Statute 143-215.6 (b)(2) provides that: Any person who knowingly makes any false statement representation, or cerdfication in any application,
record, report, plan, or other document tiles 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

Town of Mocksville Solids Handling Plan
NPDES Permit # NCO089290
Recently, in 2015 the Town of Mocksville constructed a residual solids handling facility
at the Mocksville Water Treatment Plant. The sedimentation basin solids and the filter
backwash water is sent to two equalization storage tanks onsite. The solids are allowed
to settle and the clear water is decanted from the equalization storage tanks,
dechlorinated and is discharged to an Unnamed Tributary to Bear Creek. Once there
are enough residual solids to haul, the Town's land application contractor (EMA
Resources) will pump the residuals from the equalization tank and land apply per the
Town of Mocksville's Land Application Permit.