NC0020800_Staff Report_20190404

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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.: NCO020800
Attn: Nick Coco Facility name: Andrews WWTP
From: Mikal Willmer, Dan Boss & Tim Heim
Asheville 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 pplicable.
I. GENERAL AND SITE VISIT INFORMATION
1. Was a site visit conducted? ® Yes or ❑ No
a. Date of site visit: 04/10/2018
b. Site visit conducted by: Dan Boss & Tim Heim
c. Inspection report attached? ® Yes or ❑ No
d. Person contacted: Tim Wood and their contact information: (828) 557 - 8630 ext.
e. Driving directions:
2. Discharge Point(s):
Latitude: 3 5.11.51
Latitude:
Longitude:-83.50.46
Longitude:
3. Receiving stream or affected surface waters: Valley River
Classification: C, Tr
River Basin and Subbasin No. Hiwassee, 06020002
Describe receiving stream features and pertinent downstream uses: This section of river is protected for
secondary recreational use and trout propagation. While this stretch is not on the 303d impaired list, the
valley river downstream is listed.
11. 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 ❑ 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:
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5. Is the proposed residuals management plan adequate? ❑ Yes ❑ No ❑ N/A
If no, please explain:
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: Tim Wood Certificate #:1001828 Backup ORC: Ric Da Certificate #:11203
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: Facility recently went through extensive upgrades. Phase I was completed at the end of
2018.
Description of existing facilities: influent pump station, mechanical bar screen, dual trickling filters, two circular
clarifiers, chlorine contact chamber with automatic feed system for both chlorine and dechlor and an aerobic
digester/sludize holdin tank.
ank.
Proposed flow:
Current permitted flow: 1.5 MGD
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 ® N/A
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 ® N/A
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 ® N/A
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: Upgrades were installed since previous permit issuance; however, appears to be correct
within the draft permit.
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10. Were monitoring wells properly constructed and located? ❑ Yes ❑ No ® N/A
If no, please explain:
11. Are the monitoring well coordinates correct in BIMS? ❑ Yes ❑ No ® N/A
If no, please complete the following (expand table if necessarv):
Monitoring Well
Latitude
Longitude
0 / //
0 I II
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: Significant number of enforcement cases due to limit
exceedances and frequency violations before phase I upgrades were completed in 2018. Please note flows have
been increasing, potentially due to excessive I&I.
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? Town has completed phase I of II upgrades to
improve overall system performance. I&I studies are currently under way to reduce flow into the facility.
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: unknown, chlorine is reduced below permitted limit before discharge.
17. Pretreatment Program (POTWs only): Andrews has one SIU. Awaiting Pretreatment Annual Report for 2018.
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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
❑ Issue upon receipt of needed additional information
® Issue
❑ Deny (Please state reasons: )
6. Signature of report preparer:
Signature for regional supervisor:
4/5/2019
Date:
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V. ADDITIONAL REGIONAL STAFF REVIEW ITEMS
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