NC0086924_Renewal (Application)_20120606 (2)

TYRRELL COUNTY WATER DEPARTMENT
001
Ate .
PO BOX 449 COLUMBIA NC 27925
PHONE :[phone]
FAX: [phone]
June 6, 2012
Mrs. Dina Sprinkle
NC DENR/DWQ/Point Source Branch
1617 Mail Service Center
Raleigh,NC 27699-1617
Ms. Sprinkle,
The Tyrrell County Water System is requesting renewal of permit number NC0086924.
Attached you will find our application. If you have any questions or concerns about our
application feel free to contact me at(252) 796-1371.
Sincerely,
K7A1.----- ---
Willie M. Carawan
County Administrator
Enclosures

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 NC0086924
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 TYRRELL COUNTY
Facility Name TYRRELL COUNTY RO WATER TREATMENT PLANT
Mailing Address PO BOX 449
City COLUMBIA
State / Zip Code NC 27925
Telephone Number [phone]
Fax Number [phone]
e-mail Address wmcarawanQatyrrellcounty.net
2. Location of facility producing discharge:
Check here if same as above 0
Street Address or State Road 3868 ALBEMARLE CHURCH RD
City COLUMBIA
State / Zip Code NC 27925
County TYRRELL
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 TYRRELL COUNTY WATER DEPARTMENT
Mailing Address PO BOX 449
City COLUMBIA
State / Zip Code NC 27925
Telephone Number [phone]
Fax Number [phone]
4. Ownership Status:
Page 1 of 4 C-WTP 03/05

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NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Federal ❑ State ❑ Private ❑ Public El
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)
BRACKISH WATER FROM THE CASTLE HAYNE AQUIFER
7. Describe the treatment process(es) for the raw water:
BRACKISH WATER IS PUMPED FROM WELLS AND INJECTED WITH SCALE INHIBITOR
PRIOR TO FILTRATION THRU A 5 MICRON FILTER. IT IS THEN PUMPED THRU AN RO
UNIT WHERE APPORXIMATELY 75% IS RECOVERED AS PERMEATE AND 25% IS
REJECTED AS CONCENTRATE AND DISCHARGED VIA A SUBAQUEOUS DIFFUSER
LOCATED ON THE BOTTOM OF BULL BAY.
8. Describe the wastewater and the treatment process(es) for wastewater generated by the
facility:
WASTEWATER GENERATED BY THE RO PROCESS CONSISTS OF THE DISSOLVED SALTS
REJECTED IN THE MEMBRANE PROCESS
9. Number of separate discharge points: 1
Outfall Identification number(s) 001
10. Frequency of discharge: Continuous ❑ Intermittent El
If intermittent:
Days per week discharge occurs: 6 Duration: 15 HRS
11. Plant design potable flowrate .936 MGD
Backwash or reject flow .216 MGD
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitudes
BULL BAY(35-56-16 N 76-21-17 W)
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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.
SCALE INHIBITOR
CITRIC ACID (low pH cleaning)
Sodium Hydroxide (high pH cleaning)
14. Is this facility located on Indian country? (check one)
Yes ❑ No Ei
15. Additional Information:
> Provide a schematic of flow through the facility, include flow volumes at all points in
the treatment process, and point of addition of chemicals.
> Solids Handling Plan
16. NEW Applicants
Information needed in addition to items 1-15:
> New applicants must 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.
•
WILLIE MAC CARAWAN TYRRELL COUNTY ADMINISTRATOR
Printed name of Person Signing Title
Signature of pplicant DatC
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
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• NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
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 C-WTP 03/05

PROCESS SCHEMATIC-TYRREL COUNTY BULL BAY RO WTP
DISCHARGE
JRO UNIT 75 GPM
393 GPM
WELL FIELD
SCALE V 18 GPM t 318 GPM T AERATOR
INHIBITOR �I
11/
CaCl2 NaOH,
NaOCI
.3 MG GST
DISTRIBUTION
I