WQ0023634_Staff Report_20230329

;s State of North Carolina
Division of Water Resources
Water Quality Regional Operations Section
Environmental Staff Report
Quality
To: ❑ NPDES Unit ® Non -Discharge Unit
Attn: Erickson Saunders
From: AJ Discepolo
Choose an item. Washington Regional Office
Application No.: WQ0023634
Facility name: Waterside Villages WWTF
Note: This form has been adapted from the non -discharge facilily 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: 03/24/2023
b. Site visit conducted by: AJ Discepolo, Robert Tankard
c. Inspection report attached? ® Yes or ❑ No
d. Person contacted: Rod Holley and their contact information: 252) 232 - 6065
e. Driving directions: no change since last permit was issued
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. EXISTING FACILITIES: MODIFICATION AND RENEWAL APPLICATIONS
1. Are there appropriately certified Operators in Charge (ORCs) for the facility'? ® Yes ❑ No ❑ N/A
ORC: Rod Holley Certificate #: 1012915 Backup ORC: William Donnell Or sg bon Certificate #:1006384
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: Vegetation (grass) has been allowed to grow on the high rate infiltration field. This has
inhibited the infiltration rates and is now causing ponding due to increased flow from further development of the
service area. Removal of grass and addition of sand is required.
Description of existing facilities:
Proposed flow: 120,000 GPD
Current permitted flow: 120,000 GPD
FORM: WQROSSR 04-14 Page 1 of 4

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: Vegitation on the high infiltration field has inhibited infiltration. A scheduled item should
be included for the removal of vegitation and low permiability surface soil and addition of new coarse graded
sand.
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: Micro C (Glycerin) to aid in NO3 reduction is added periodically at an average rate of 10.4
GPD and an Alkalinity solution to aid in Nitrification and NH3 reduction is added at an average rate of 49.9 GPD.
The pumps are ROLA-CHEM Model RC 103 SC and RC503.
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: The observed ponding is likely due to the ve itag tion present on the spray field, once it is
removed and replaced with sand the field should operate as intended.
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: Facili , is using chlorine tabs and not liquid chlorine.
10. Were monitoring wells properly constructed and located? ® Yes ❑ No ❑ N/A
If no, please explain:
FORM: WQROSSR 04-14 Page 2 of 4

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
MW-10
0 , rr
- U
MW-11
0 , rr
- C
MW-12
0 , rr
- C
MW-13
0 , rr
- C
MW-14
0 , rr
- C
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: July 2022 exceedences of nutrient and water quality
were the result of inadequate aeration and failed aeration pumps. These pumps are being replaced with identical
pumps. WaRO does not believe these violations should affect renewl of the permit.
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?
Aeration problems have been common due to failed blower pumps, back up pumps are being used until the
replacement of the pumps in April 2023. Ponding is due to vegetation and low permeability soils, vegetation is to
be stripped and sand added to the infiltration fields during the next permit cycle.
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, non -discharge system
17. Pretreatment Program (POTWs only): N/A, non -discharge system
FORM: WQROSSR 04-14 Page 3 of 4

III. 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
The vegetation shall be removed from
one infiltration field within twelve
The system is a high -rate infiltration system and is not dependent
months of permit issuance and sand
for nutrient uptake from a vegetative cover. The County plans to
replaced to designed specifications. The
remove the grass cover crop within the next year and convert the
second field shall be completed within
fields to have a sand surface.
twenty four months.
An engineers certification shall be
mailed to the Washington Regional
The third treatment train is not plumbed with the necessary
Office prior to operation of the third
treatment units and should be inspected and certified by a
treatment train.
professional engineer.
The easement for the groundwater
lowering system should be cleared of all
Trees and shrubs are growing in the easement and it has become
vegetation within ninety days of permit
hard to inspect the system.
issuance.
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
❑ Deny (Please state reasons: ) (—DocuSigned by:
6
Signature of report preparer:
Signature of regional supervisor:
Date: 3/29/2023
Plo(,ctiZ T""
IV. ADDITIONAL REGIONAL STAFF REVIEW ITEMS
�
7A5E79BF413F4EA...
FORM: WQROSSR 04-14 Page 4 of 4