WQ0005849_Staff Report_20231018

DocuSign Envelope ID: 14CCEC5E-3454-4060-B416-CE769243352C
State of North Carolina
®r- Division of Water Resources
Water Quality Regional Operations Section
Environmental Staff Report
Quality
To: ❑ NPDES Unit ® Non -Discharge Unit Application No.: WQ0005849
Attn: Zachary Mega Facility name: Pluris North Topsail
From: Helen Perez
Wilmington Regional Office
Note: This form has been adapted from the non -discharge fg acili , 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: 07-06-2023
b. Site visit conducted by: Helen Perez
c. Inspection report attached? ❑ Yes or ® No
d. Person contacted: Dwight Peterson and their contact information: (910) 852 - 0627 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- NA
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 ❑ 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:
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DocuSign Envelope ID: 14CCEC5E-3454-4060-B416-CE769243352C
6. Are the proposed application rates (e.g., hydraulic, nutrient) acceptable`? ❑ Yes ❑ No ❑ N/A
If no, please explain:
7. Are there any setback conflicts for proposed treatment, storage and disposal sites? ❑ 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: Dwight Peterson Certificate #:1002194 Backup ORC: William Andrews Certificate #:1005228
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: Phase II has been completed. The Final Engineer Certification was
submitted and a start-up inspection was conducted. The description will need to be changed to reflect this.
Proposed flow:
Current permitted flow: Since completion of Phase II, permitted flow is now 1 MGD for the MBR plant and
542,635 GPD for the lagoon system plant.
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 ❑ 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? ® 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: Phase I needs to be removed because Phase II of the MBR plant is completed. See #2
above.
10. Were monitoring wells properly constructed and located? ® Yes ❑ No ❑ N/A
If no, please explain:
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DocuSign Envelope ID: 14CCEC5E-3454-4060-B416-CE769243352C
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
O I //
O / //
O I It
O / //
O I it
O l lI
O I it
O l lI
O I it
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: Groundwater monitoring has been generally
compliant except for some erratic TDS exceedances and reoccurring ammonia exceedances in a few wells
located at the review boundary. Newly installed MW-10, located at the compliance boundary, indicates
levels below the groundwater standard. There have been no issues with the NDMRs or NDARs.
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: N/A
17. Pretreatment Program (POTWs only): N/A
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DocuSign Envelope ID: 14CCEC5E-3454-4060-B416-CE769243352C
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
❑ Issue upon receipt of needed additional information
® Issue
❑ De9_y_Wj to reasons: )
0
Signature of report preparer:
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Signature of regional supervisor:
Date: 10/18/2023
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DocuSign Envelope ID: 14CCEC5E-3454-4060-B416-CE769243352C
V. ADDITIONAL REGIONAL STAFF REVIEW ITEMS
This staff report has been prepared for the Change of permit ownership request from Pluris to ONWASA. There is no
request to change the waste stream, treatment system or effluent disposal method.
hi July 2023, a start-up inspection was conducted for the Phase Il of the MBR plant. A Final Engineer Certification
was submitted. Phase I (PPI 002) monitoring will need to be omitted from the permit.
FORM: WQROSSR 04-14 Page 5 of 5