NC0089290_Renewal (Application)_20220127

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
1. Contact Information:
Owner Name
Facility Name
Mailing Address
City
State / Zip Code
Telephone Number
Fax Number
e-mail Address
NPDES Permit Number
Town of Mocksville
NC0089290
Hugh A. Lagle Water Treatment Plant
771 Sanford Ave
Mocksville
NC, 27028
[phone]
N/A
[e-mail]
2. Location of facility producing discharge:
Check here if same as above ❑X
Street Address or State Road
City
State / Zip Code
County
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
City
State / Zip Code
Telephone Number
Fax Number
4. Ownership Status:
Federal
4700 Homewood Court, Suite 108
Raleigh
NC, 27609
[phone]
N/A
State ❑
Private ❑ Public 0
Page 1 of 4 Version 5/2012

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
5. Type of treatment plant:
❑X 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)Ji.e. groundwater, surface water)
The Water Treatment Plant withdraws 100% surface water sourced 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 the Town, Sanford Avenue, Campbell Road, and Madison
Road.
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 unnamed tributary 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 ❑X
If intermittent:
Days per week discharge occurs: N/A Duration: N/A
11. Plant design potable flowrate 2.0 MGD
Backwash or reject flow 0.137 MGD
Intermittent ❑
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
The outfall discharges to an unnamed tributary to Bear Creek in the Yadkin Pee -Dee River Basin.
35° 53'28" N, 80° 34' 40" W.
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
Iron sulfate / ferrous sulfate
Fluoride Yes N No 0
Ammonia nitrogen / Chloramines
Yes 0
Yes 0
No
No ❑x
Yes ❑ No ❑X
Zinc -orthophosphate or sweetwater CP1236
List any other additives below:
Poly Aluminum Chloride
Yes ❑ No 0
Sodium Hydroxide
Poly-ortho phosphate blend
Chlorine gas
14. Is this facility located on Indian country?
Yes ❑ No
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.
Justin Turbyfill Mocksville WTP ORC
Printed name of Person Signing Title
6/23/2021
Signature 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. (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 5/2012

Town of Mocksville Solids Handling Plan
NPDES Permit # NC0089290
In the year of 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.

TOWN OF MOCKSVILLE
HUGH A. IAGLE
WATER TREATMENT PLANT
SITE PLAN
25' 0 25' 50'
FRFNO:
Qi ADMIN, CHEMICAL, LAB
O2 FILTERS 1 & 2
0 FILTERS 3 & 4
Q SEDIMENTATION BASIN 1 at 2
0 SEDIMENTATION BASIN 3
• CLEARWELL (ABANDONED)
Q STORAGE
© CHLORINE BUILDING
p CLEARWELL - PUMP STATION
1� WASH WATER FACILITIES
Q GENERATOR
• RESIDENCE
PIPING SCHF2III F'
*�0 X--.-
POINDISCHARGE
T 001
Y----- R-- r,--1
10 —I
x
10
DECHLOR
FEED
EXISTING WATER LINE
EXISTING SEWER LINE
EXISTING DRAIN LINE
/t
x
00
x
DECHLOR
FEED
x