NC0083321_Renewal (Application)_20190530

ROY COOPER (i',... ,, V -_-4'
Governor r J'"
MICHAEL S.REEGAN . -.�.,; .I16
Secretary ""`�"""n
LINDA CULPEPPER NORTH CAROLINA
Director Environmental Quality
July 18, 2019
Edward Caron
Onslow Water and Sewer Authority
228 Georgetown Rd
Jacksonville, NC 28540
Subject: Permit Renewal
Application No. NC0083321
Hubert WTP
Onslow County
Dear Applicant:
The Water Quality Permitting Section acknowledges the May 30, 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://deo.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
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NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Mail the complete application to: D/laeQ/DWb$
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit HAY 3 0 2019
1617 Mail Service Center, Raleigh, NC 27699-1617
Water Quality
Permitting Section
NPDES Permit Number NC0083321
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 Onslow Water and Sewer Authority
Facility Name Hubert Water Treatment Plant
Mailing Address 222 Georgetown Road
City Jacksonville
State / Zip Code NC 28546
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 374 Hubert Boulevard
City Hubert
State / Zip Code NC 28539 •
County Onslow
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 Onslow Water Sewer Authority
Mailing Address 222 Georgetown Road
City Jacksonville
State / Zip Code NC 28
Telephone Number [phone]
Fax Number [phone]
4. Ownership Status:
Federal ❑ State ❑ Private ❑ Public
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:
® 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 rgi
6. Description of source water(s) (i.e. groundwater, surface water)
Ground Water
7. Describe the treatment process(es) for the raw water:
• Raw water goes thru aeration to remove sulfur.
• Thru the Greensand filter to remove Iron and Manganese.
• Thru the Ion Exchange softeners to remove calcium and Magnesium.
• Hypochlorite is used for disinfection.
• Fluoridation.
• Phosphate for corrosion control.
8. Describe the wastewater and the treatment process(es) for wastewater generated by the
facility:
• The waste from the Greensand filters, ion exchange softeners is discharged to a
series (four) sedimentation lagoons, supernatant is discharged to the receiving
stream.
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: Duration:
11. Plant design potable flowrate 6 MGD
Backwash or reject flow .30 MGD Average flow
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
Queen Creek, classified SA-HQW waters in the White Oak River Basin
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:
KMnO4
Household Cleaners
14. Is this facility located on Indian country? (check one)
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
➢ The plan is to clean a lagoon every three years
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.
Edward Caron Superintendent Wastewater
Printed name of Pe„son Signi g Title
5/0 7
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 impnsonment not more than 5
years,or both,for a similar offense)
Page 4 of 4 Version 5/2012

Hubert WTP Water treatment Process
372 Hubert BLVD Aerators Avg Greensand Filters
1233 GPM each Avg Flow Per filter Approximately 350 GPM
Filter Pumps Train 1
Hubert NC, 28539 Q. Det#3 �— 4. © © © 0
--H — •,
NPDES #NC0083321 3 I KMN04 Injected �
Train 2
Raw Water in
at Detention tanks ©A AAA
Flow AVG ' 2 - Det# 2
Train 3
3850 GPM Detention tanks •
0 0 ® ® '"
lO-- Det#1
Backwash Waste to lagoons
Ion Exchange Softeners Approximated Avg 15000gal waste
Train 1 Softeners 1-2 AVG flow 440 GPM per backwash process per train.
After filt� O ©Train 1 Soft. Bypass AVG 250 GPM
Train 2 I Softener Bypass. y Chemical
After Filt Treated Flow Injection vault
3 4 5 AVG Total Finished Water CW#1 High Service Pumps
Train 3 . 1. HFS (fluoride)
3700 GPM to Clearwells
After filter 2. PO4 (orthophosphate) —iii HSPs
�'�_O" O • h 3. CL2 (Sodium hypochlorite)I� 1-4 to �--
Softeners 3-8 Avg 300 GPM0 _l f : System
Trains 2-3 Soft. Bypass Avg 350gpm
Softener Regeneration 1200 Gal.of Saturated Brine is
Process waste to lagoon, applied per Softener
Approx 18000 Gal per regeneration.
Regen
Plant Floor Drains and Storm Drains
Floor Drains flowing to Lagoon:
Chemical Feed To Waste Lagoon
Lab/Office Floor & Lab Sink There are Four
Bathroom Floor 24" x 24" Storm
HFS room floor Drains Located
CL2 and CL2 storage Room Floor E>To Retention Pond Behind Plant
g inside the plant. I
Blower Rm Floor
CL2 feed Rm Floor
Train Bay Floor Drains Please note that this schematic is a general representation of the
WHubert WTP process only and is NOT depicting orientation or scale of
the different components within or around the WTP facility.

Discharge to stream
[ /-4)11 ,
T' Lagoon #1 Lagoon#2 .-, Lagoon #3 m
Primary Secondary Tertiary Lagoon #4
1
'r4 1 it
Influent m _ Alternate Influent
Plant w. ectio;
Current floor drain discharee
location.
372 Hubert Blvd. Hubert NC 28539
NPDES # NC0083321
-Each lagoon holds 0.75 MG
-There is no chemical addition. WTP
-Max influent flow is 1300 GPM as a batch
feed.
-Effluent vault has an 80gpm & a 350gpm
pump.
There are three alternate influent points

Solids Handling Plan
Hubert Water Treatment Plant
A pump and haul method of removing solids from the four (4) lagoons at Hubert
WTP will be utilized. Solids will be dewatered to pass the paint test and
transported by truck to the Onslow County Landfill. The lagoons will be pumped
every three (3) years so as not to allow solids accumulation to interfere with
detention time.