NC0089613_Site Visit_20160602

"tic, State of North Carolina
Division of Water Resources
Water Quality Regional Operations Section
Environmental Staff Report
Quality
To: ®NPDES Unit❑Non-Discharge Unit Application No.: NC0089613
Attn: Julie Grzyb Facility name: Brunswick Regional W&S H2GO WTP
From: Steve West
Wilmington Regional Office
Note: This form has been adapted from the non-discharge facility staff report to document the review of both non-
discharge and NPDES permit applications and/or renewals. Please complete all sections as they are applicable.
I. GENERAL AND SITE VISIT INFORMATION
1. Was a site visit conducted?❑ Yes or®No RECEIVED/NCDEQ/DVVR
a. Date of site visit:
JUN 0 2 2016
b. Site visit conducted by:
Water Quality
c. Inspection report attached? ❑ Yes or❑No Permitting Section
d. Person contacted: and their contact information: (_) - ext.
e. Driving directions:
2. Discharge Point(s):
Latitude: 34° 13' 05" Longitude: 77°58'42"
3. Receiving stream or affected surface waters: Brunswick River
Classification: SC
River Basin and Subbasin No. CFR 18-77
Describe receiving stream features and pertinent downstream uses: Tidal brackish river that is an oxbow
of the Cape Fear River. The river is used for fishing/boating
II. PROPOSED FACILITIES: NEW APPLICATIONS
1. Facility Classification: Physical/Chemical Grade II (Please attach completed rating sheet to be attached to issued
permit)
Proposed flow: 1.0 initial,2.0 MGD upon expansion
Current permitted flow: New facility
2. Are the new treatment facilities adequate for the type of waste and disposal system?® Yes or❑No
If no,explain:
3. Are site conditions(soils,depth to water table,etc)consistent with the submitted reports? ❑ Yes❑No®N/A
If no, please explain:
4. Do the plans and site map represent the actual site(property lines, wells,etc.)?❑ Yes❑No®N/A
If no,please explain:
5. Is the proposed residuals management plan adequate? ❑ Yes ❑No ®N/A
If no,please explain:
FORM: WQROSSR 04-14 Page 1 of 5

6. Are the proposed application rates(e.g., hydraulic,nutrient)acceptable? ElYes ElNo®N/A ` 4
If no,please explain:
7. Are there any setback conflicts for proposed treatment,storage and disposal sites? 0 Yes or 0 No
If yes, attach a map showing conflict areas.
8. Is the proposed or existing groundwater monitoring program adequate? 0 Yes 0 No®N/A
If no,explain and recommend any changes to the groundwater monitoring program:
9. For residuals, will seasonal or other restrictions be required? ❑ Yes❑No®N/A
If yes, attach list of sites with restrictions(Certification B)
Describe the residuals handling and utilization scheme:
10. Possible toxic impacts to surface waters: Pilot mysid testing at IWC up to 10%at typical operating conditions
(raw water source combinations and permeate recovery)passed in all tests conducted. The projected IWC of 3%
(2.1%actual)following a 10 meter mixing zone is based using a Cormix model with a multi-port diffuser.
11. Pretreatment Program(POTWs only):N/A
Ills EXISTING FACILITIES: MODIFICATION AND RENEWAL APPLICATIONS
1. Are there appropriately certified Operators in Charge(ORCs)for the facility?❑Yes El No El N/A
ORC: Certificate#: Backup ORC: Certificate#:_ _
2. Are the design,maintenance and operation of the treatment facilities adequate for the type of waste and disposal
system? 0 Yes or 0 No
If no,please explain:
Description of existing facilities:
Proposed flow:
Current permitted flow:
Explain anything observed during the site visit that needs to be addressed by the permit,or that may be important
for the permit writer to know(i.e.,equipment condition,function,maintenance,a change in facility ownership,
etc.)
3. Are the site conditions(e. .,soils,topography,depth to water table,etc)maintained appropriately and adequately
assimilating the waste? 0 Yes or 0 No
If no,please explain: _
4. Has the site changed in any way that may affect the permit(e.g.,drainage added, new wells inside the compliance
boundary,new development,etc.)? ❑ Yes or❑No
If yes,please explain:
5. Is the residuals management plan adequate? ❑ Yes or❑No
If no,please explain:
6. Are the existing application rates(e.g.,hydraulic,nutrient)still acceptable?0 Yes or❑No
If no,please explain:
7. Is the existing groundwater monitoring program adequate? ❑ Yes 0 No 0 N/A
If no,explain and recommend any changes to the groundwater monitoring program:
8. Are there any setback conflicts for existing treatment,storage and disposal sites? ❑ Yes or❑No
If yes,attach a map showing conflict areas.
9. Is the description of the facilities as written in the existing permit correct? 0 Yes or❑No
If no,please explain:
10. Were monitoring wells properly constructed and located? ❑ Yes❑No ❑N/A
If no,please explain:
FORM: WQROSSR 04-14 Page 2 of 5

l 1. Are the monitoring well coordinates correct in BIMS? ❑Yes 0 No❑N/A
If no,please complete the following(expand table if necessary):
Monitoring Well Latitude Longitude
o , „ - o , A
o , /I - o , II
o 1 n - o r IT
o , n - o r n
o , n - o , n
12. Has a review of all self-monitoring data been conducted(e.g.,DMR,NDMR,NDAR,GW)? 0 Yes or❑No
Please summarize any findings resulting from this review:
Provide input to help the permit writer evaluate any requests for reduced monitoring, if applicable.
13. Are there any permit changes needed in order to address ongoing BIMS violations? ❑Yes or 0 No
If yes,please explain:
14. Check all that apply:
❑No compliance issues 0 Current enforcement action(s) ❑ Currently under JOC
❑Notice(s)of violation 0 Currently under SOC ❑ Currently under moratorium
Please explain and attach any documents that may help clarify answer/comments(i.e.,NOV,NOD,etc.)
If the facility has had compliance problems during the permit cycle,please explain the status. Has the RO been
working with the Permittee? Is a solution underway or in place?
Have all compliance dates/conditions in the existing permit been satisfied? 0 Yes ❑No 0 N/A
If no,please explain:
15. Are there any issues related to compliance/enforcement that should be resolved before issuing this permit?
❑Yes❑No❑N/A
If yes,please explain:
16. Possible toxic impacts to surface waters:
17. Pretreatment Program(POTWs only):
FORM:WQROSSR 04-14 Page 3 of 5

IV. REGIONAL OFFICE RECOMMENDATIONS • •
1. Do you foresee any problems with issuance/renewal of this permit? ❑Yes or 0 No
If yes,please explain:
2. List any items that you would like the NPDES Unit or Non-Discharge Unit Central Office to obtain through an
additional information request:
3.
Item Reason
Annual maintenance
cleaning solution How will this material be delivered to the WWTF and is there an acceptance
discharged to Belville letter from the Town of Belville?
WWTF
4. List specific permit conditions recommended to be removed from the permit when issued:
Condition Reason
5. List specific special conditions or compliance schedules recommended to be included in the permit when issued:
Condition Reason
Notification/application to Since SL 2011-394 no longer requires an ATC for the outfall and no EA was
DCM prior to construction required,DCM as the umbrella agency for permit and other agency comments
of outfall should be referenced
Maintain record of
when/how much cleaning
solution discharged to
Belville WWTF
6. Recommendation: ❑ Hold,pending receipt and review of additional information by regional office
❑ Hold,pending review of draft permit by regional office
0 Issue upon receipt of needed additional information
❑ Issue
❑Deny(PI sta ns: )
7. Signature of report preparer.
Signature of regional supervisor:
Date: `
FORM: WQROSSR 14 Page 4 of 5

V. ADDITIONAL REGIONAL STAFF REVIEW ITEMS
The discharge proposed(4 MGD in phase 1 and 8 MGD ultimate) includes a daily membrane raw water flush which
will be negligible(2500 gal/shutdown episode per skid,4 skids ultimate)compared to the concentrate discharge(0.5
MGD per skid). The membranes will require an annual maintenance cleaning, 24,000 gallons/skid,consisting of a
2%citric acid/0.1%NaOH solution and rinse water(permeate), which will be captured and discharged to the Belville
WWTF(NC0075540).
Regarding the proposed placement of the outfall, it is unclear where the"upstream/downstream"sampling will be
conducted given the proximity of the Belville WWTF outfall(-100' "upstream"). Belville is currently a member of
the CFR Basin Monitoring Coalition program.
The only chemical additive that may be present in the concentrate is an anti-scalant which is continuously fed into the
raw water prior to the membranes. The composition of the anti-scalant is likely proprietary: however,the material
will be NSF-approved as a drinking water additive.
FORM: WQROSSR 04-14 Page 5 of 5

WATER POLLUTION CONTROL SYSTEM OPERATORS CERTIFICATION
COMMISSION
CLASSIFICATION
RATING SHEET FOR WATER POLLUTION CONTROL SYSTEMS
FACILITY INFORMATION:
NAME OF FACILITY: Brunswick Regional H2G0 Water & Sewer WTP
MAILING ADDRESS: P.O. Box 2230, Leland, NC 28451
COUNTY: Brunswick
CONTACT PERSON. TELEPHONE: Bob Walker, 910-371-9949
PERMIT NO.: NC0089613 .Check One: NC X. WQ . HEALTH DEPT._
ORC: Facility not constructed TELEPHONE:
RATING INFORMATION: (Before completing this section, please refer to pages 2-4)
PERMITTED FLOW: 2 MGD BNR? YES_ NO X .
CHECK CLASSIFICATION: WASTEWATER: 1 2_ 3 4
COLLECTION: 1 2 3 4
SPRAY IRRIGATION SUBSURFACE LAND APPLICATION
PHYSICAL/CHEMICAL GRADE I GRADE II _X_
RATED BY: _Steve West_ REGION WiRO DATE: 5/20/16
REGIONAL OFFICE TELEPHONE NUMBER: [phone] . EXT._

Classification of Bioloaical Water Pollution Control Treatment Systems:
Grade I Biological WPCS
- Septic tank/sand filter systems
- Biological lagoon systems
- Constructed wetlands and associated appurtenances
Grade II Biological WPCS
- Systems that utilize an activated sludge or fixed growth process with a
permitted flow less than or equal to 0.5 millions gallons per day (mgd)
Grade III Biological WPCS
- Systems that utilize an activated sludge or fixed growth process with a flow of
greater than 0.5 through 2.5 million gallons per day. (mgd)
- Grade II systems that are required to achieve biological nutrient reduction*
Grade IV Biological WPCS
- Systems that utilize an activated sludge or fixed growth process with a
permitted flow of greater than 2.5 million gallons per day (mgd)
- Grade III Systems that are required to achieve biological nutrient reduction*
* Biological Nutrient Reduction-
The reduction of total nitrogen or total phosphorous by an activated sludge or fixed
growth process as required by the facilities permit
Classification of Collection Water Pollution Control Systems:
(whichever provides lowest grade)
Same grade as biological water pollution control system. Grade of system:
Based on population served:
1,500 or Less = Grade I
1,500 to 15,000 = Grade II
15,001 to 50,000 = Grade III
50,001 or more = Grade IV

Classification of Spray Irrigation Water Pollution Control Systems:
Systems which utilize spray irrigation for the reuse or disposal of wastewater.
These systems include: septic tanks, sand filters, oil/water separators, lagoons,
storage basins, screening, and sedimentation. Systems other than those listed
above shall be subject to additional classification.
Classification of Land Application of Residuals Systems:
Systems permitted and dedicated for land application of residuals that are
produced by a water pollution control system or contaminated soils.
Classification of Physical/Chemical Water Pollution Control Treatment Systems;
Grade I Physical/Chemical: Any water pollution control system that utilizes a
primarily physical process to treat wastewater. This classification includes
groundwater remediation systems.**
_X_ Grade II Physical/Chemical: Any water pollution control system that utilizes
a primarily chemical process to treat wastewater. This classification includes
reverse osmosis, electrodialysis, and ultrafiltration systems.**
**Any water pollution control system that utilizes a physical/chemical process to
enhance an activated sludge or fixed growth process, shall not be subject to additional
classification.
Classification of Subsurface Water Pollution Control Systems:
Systems which utilize the soil for subsurface treatment and disposal of
wastewater and/or are required to have a certified operator under
15A NCAC 18A.1961.***
***Any subsurface system that has as part of its treatment process a water pollution
control system that may be classified under Rule.0302 through.0307 of this section
shall be subject to additional classification.

Definitions:
Activated Sludge - shall mean a biological wastewater treatment process in which
predominantly biodegradable pollutants in wastewater are absorbed, or adsorbed by
living aerobic organisms and bacteria.
Chemical Process - shall mean a wastewater pollution control system process
consisting exclusively of the addition of chemicals to treat wastewater.
Collection System - shall mean a continuous connection of pipelines, conduits,
pumping stations, and other related constructions used to conduct wastewater to the
water pollution control system.
Electrodialysis System - shall mean a system utilizing a selective separation of
dissolved solids process that is based on electrical charge and diffusion through a semi-
permeable membrane.
Physical Process - shall mean any water pollution control system process consisting
of electrodialysis, adsorption, absorption, air stripping, gravimetric sedimentation,
flotation, and filtration as a means of treatment.
Reverse Osmosis System - shall mean a system which utilizes solutions and
semipermeable membranes to separate and treat wastewater.
Ultrafiltration System - shall mean a system which utilizes a membrane filter to
remove pollutants from wastewater.
Water Pollution Control System - shall mean any system for the collection,
treatment, or disposal of wastewater and is classified under the provision of G.S. 90A-
37.
Note: P/ease refer to G.S. 90A-37 for additional information and definitions.