NC0048577_Renewal Application_20190128

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ROY COOPER 4- - . ,4
Governor � Y-4 r
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MICHAEL S.REGAN ..>>F ,,.
Secretary .
LINDA CULPEPPER NORTH CAROLINA
Director Environmental Quality
January 28, 2019
Gary Davenport, WTP Superintendent
Robeson County Water Department
265 McGirt Rd
Maxton, NC 28364
Subject: Permit Renewal
Application No. NC0048577 -
Maxton WTP
Robeson County
Dear Applicant:
The Water Quality Permitting Section acknowledges the January 28, 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. 150E-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.
5
Siinl�ceerely,
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Wren Thedford
Administrative Assistant
Water Quality Permitting Section
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North DaroSna Departrn_nt of Environrn=ntal Quality I Dusan of Water Resolero=s
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10-433-3300

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ikoboon County iJ a, ater 'pgtent
Gary D. Davenport, Superintendent
265 McGirt Road [phone]
Maxton,North Carolina 28364 FAX [phone]
January 17,2019
N.C.Department of Environment and Natural Resources RECEIVED/DENR/®WR
Division of Water Quality/NPDES Unit
1617 Mail Service Center,Raleigh,NC 27699-1617 BAN 2 3 2419
Water Resources
Subject: NPDES Permit Renewal Permitting Section
Maxton WTP
NPDES NC0048577
Robeson County
Dear Permitting Unit:
Robeson County Water Department is requesting renewal of NPDES Permit NC0048577 for the Maxton
WTP. The renewal package consists of:
• Cover Letter
• Application—Short Form C/WTP
• Flow Schematic
• Solids Handling Plan
• Two copies of the Renewal Package
If you have any questions,please call me at: 910/844-5611 Ext 26.
Sincerely,
Gary Da enport,Water Treatment Superintendant
Robeson County Water Department
4 •:0

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 NC0048577
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 Robeson County Water Department
Facility Name Maxton WTP
Mailing Address 265 MgGirt Road
City Maxton
State / Zip Code NC/28364
Telephone Number [phone] Ext. 26
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
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 Robeson County Water Department
Mailing Address 265 McGirt Road
City Maxton
State / Zip Code NC/28364
Telephone Number [phone] Ext. 26
Fax Number [phone]
4. Ownership Status:
Page 1 of 4 Version 5/2012

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Federal ❑ State El Private ❑ Public X
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 El
6. Description of source water(s) (i.e. groundwater, surface water)
Groundwater
7. Describe the treatment process(es) for the raw water:
Raw water is aerated. Sodium Hydroxide is added for pH adjustment. Water flows to a
sedimentation basin and is then filtered in Pressure Sand Filters. Sodium Hypochlorite is used
for disinfection.
8. Describe the wastewater and the treatment process(es) for wastewater generated by the
facility:
Backwash flows to an equalization basin and then pumped to thickner/clarifier for solids
removal. Supernatant from clarifiers is dechlorinated with calcium thiosulfate prior to
discharge. Solids are removed from the clarifiers to sludge drying beds for dewatering and
disposal.
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: 3 Duration: 8 hours
•
11. Plant design potable flowrate 12.0 MGD
Backwash or reject flow 0.1 MGD
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
Lumber River •
13. Please list all water treatment additives, including cleaning chemicals or disinfection
treatments, that have the potential to be discharged.
Page 2 of 4 Version 5/2012

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
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 X No
List any other additives below:
Sodium Hydroxide, Sodium Hypochlorite, Calcium Thiosulfate
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 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.
Gary Davenport Water Treatment Superintendent
Printed name of Person Signing Title //
'40 galif-40 92t-
Signat/ e of Applicant 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
Page 3 of 4 Version 5/2012

I NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
impnsonment 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

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SLUDGE MANAGEMENT PLAN
NPDES NC0048577
Robeson County WTP
Filter backwash water is pumped to a clarifier where solids and clear water are
separated. Sludge is pumped to drying beds for treatment and disposed of at the Robeson
County Landfill. Clear water is discharged to the Lumber River. Sludge is pumped from
the clarifier to the drying beds approximately every two (2) months.