WQ0031317_Staff Report_20220914

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Environmental
Quality
State of North Carolina
Division of Water Resources
Water Quality Regional Operations Section
Staff Report
To: ❑ NPDES Unit ® Non -Discharge Unit Application No.: WQ0031317
Attn: Lauren Plummer
From: Helen Perez
Wilmington Regional Office
Facility name: GNF WWTF
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
a. Date of site visit: 03/18/2022
b. Site visit conducted by: Helen Perez
c. Inspection report attached? ❑ Yes or ® No Uploaded to Laserfiche
d. Person contacted: Karen Williams and their contact information: (910) 547 - 6029 ext.
e. Driving directions:
2. Discharge Point(s):
Latitude: Longitude:
Latitude: Longitude:
3. Receiving stream or affected surface waters:
Classification:
River Basin and Subbasin No.
Describe receiving stream features and pertinent downstream uses:
II. PROPOSED FACILITIES: NEW APPLICATIONS
1. Facility Classification: (Please attach completed rating sheet to be attached to issued permit)
Proposed flow:
Current permitted flow:
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 n 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? n Yes n No ❑ N/A
If no, please explain:
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6. Are the proposed application rates (e.g., hydraulic, nutrient) acceptable`? I I Yes ❑ No ❑ N/A
If no, please explain:
7. Are there any setback conflicts for proposed treatment, storage and disposal sites? n Yes or ❑ No
If yes, attach a map showing conflict areas.
8. Is the proposed or existing groundwater monitoring program adequate? ❑ Yes ❑ 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:
11. Pretreatment Program (POTWs only):
III. EXISTING FACILITIES: MODIFICATION AND RENEWAL APPLICATIONS
1. Are there appropriately certified Operators in Charge (ORCs) for the facility? ® Yes ❑ No ❑ N/A
ORC: Michael Phipps Certificate # 986536 Backup ORC: Jeffrey Hollis Certificate #:993996
2. Are the design, maintenance and operation of the treatment facilities adequate for the type of waste and disposal
system? ® Yes or ❑ No
If no, please explain:
Description of existing facilities: See description in current permit.
Proposed flow: 75,000 GPD
Current permitted flow: 75,000 GPD
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.g., soils, topography, depth to water table, etc) maintained appropriately and adequately
assimilating the waste? ❑ Yes or ❑ 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 n No
If no, please explain:
6. Are the existing application rates (e.g., hydraulic, nutrient) still acceptable? ❑ Yes or No
If no, please explain:
7. Is the existing groundwater monitoring program adequate? n Yes ❑ No ® 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? ® Yes or ❑ No
If no, please explain:
10. Were monitoring wells properly constructed and located? n Yes n No ® N/A
If no, please explain:
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11. Are the monitoring well coordinates correct in BIMS? ❑ Yes ❑ No ❑ N/A
If no, please complete the following (expand table if necessary):
Monitoring Well
Latitude
Longitude
O
l
11
0
I
//
O
/
//
0
I
II
O
/
//
0
I
/I
O
l
II
0
I
II
O
l
If
0
I
If
12. Has a review of all self -monitoring data been conducted (e.g., DMR, NDMR, NDAR, GW)? ® Yes or ❑ No
Please summarize any findings resulting from this review: There have been no violations issued for the permit
cycle.
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 ® No
If yes, please explain:
14. Check all that apply:
® No compliance issues ❑ Current enforcement action(s) ❑ Currently under JOC
❑ Notice(s) of violation ❑ 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? ❑ Yes ❑ No ® 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):
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IV. REGIONAL OFFICE RECOMMENDATIONS
1. Do you foresee any problems with issuance/renewal of this permit? ❑ Yes or ® 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:
Item
Reason
3. List specific permit conditions recommended to be removed from the permit when issued:
Condition
Reason
4. List specific special conditions or compliance schedules recommended to be included in the permit when issued:
Condition
Reason
5. Recommendation: ❑ Hold, pending receipt and review of additional information by regional office
® Hold, pending review of draft permit by regional office
1-1Issue upon receipt of needed additional information
Issue
6. Signature of report prep
Signature of regional supervisor:
9/16/2022
Date:
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DocuSign Envelope ID: E78B18C4-7B95-424B-BODO-B65E7B33B2EE
V. ADDITIONAL REGIONAL STAFF REVIEW ITEMS
This staff report is being prepared for the renewal of Permit WQ0031317, GNF WWTF. This facility treats the
domestic wastewater from the industrial GNF site through a Membrane Bioreactor system to reclaim standards for the
conjunctive use of on -site cooling towers. The effluent can be discharged to Outfall 002 of the NPDES Permit
NC0001228 if the demand for conjuctive reclaim use decreases or reclaim standards are not met. Currently, the plant
treats approximately15,000-16,000 gpd and no violations have been issued during this permit cycle.
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