NC0023906_CEI-04/17/2024_20240503

DocuSign Envelope ID:B9873CCE-BO1A-47EF-8230-A7A3C78BE6EB
ROY COOPER
Governor P
ELIZABETH S.BISER „� �,
secretary
RICHARD E.ROGERS,JR. NORTH CAROLINA
Director EnvUonwnmlQuwltty
May 3, 2024
Grant W. Goings, City Manager
City of Wilson
P.O. Box 10
Wilson,NC 27893-0010
Subject: Compliance Evaluation Inspection
Hominy Creek WRF
NPDES Permit NCO023906
Wilson County
Dear Mr. Goings:
On April 17, 2024, Danny Smith from the Raleigh Regional Office(RRO) of the Division of
Water Resources (DWR) conducted a compliance evaluation inspection of the treatment
facilities located at the Hominy Creek Water Reclamation Facility(WRF) in Wilson. The
purpose of this inspection was to ensure compliance with the subject NPDES permit. During the
inspection,the presence and cooperation of Jimmy Pridgen, Water Reclamation Manager and
Operator in Responsible Charge(ORC), and Nicholas Eatmon Operations and Maintenace
Supervisor and Backup ORC(bORC)were helpful and appreciated.
The Hominy Creek WRF is located at 3100 Stantonsburg Road in Wilson,North Carolina. The
facility is a Grade IV Biological Water Pollution Control System with a permitted effluent
wastewater flow of 14.0 MGD. Through NPDES permit NC0023906, the City of Wilson is
authorized to discharge the treated wastewater through outfal1001 to receiving waters designated
as Contentnea Creek,a waterbody classified as class C Sw-Nutrient Sensitive Waters(NSW)
within the Neuse River Basin.
This NPDES compliance evaluation inspection consisted of the following:
• Review of the NPDES permit,
• Review of the owner/facility information,
• Review of February 2021-January 2024 monitoring data and compliance history;
• On-site inspection of the wastewater treatment facility; and
• On-site inspection of the discharge outfall.
Findings during the pre-inspection file review were as follows:
1. The current NPDES permit was issued effective March 1, 2021, and will expire May 31,
2025. The permittee is not authorized to discharge after the expiration date. In order to
receive automatic authorization to discharge after the expiration date,the permittee will
North Carolina Department of Environmental Quality I Division of Water Resources
Q.EQ 7> Raleigh Regional Office 1 380o Barrett Drive I Raleigh,North Carolina 27609
—. 0 919.791.4200

DocuSign Envelope ID:B8873CCE-B01A-47EF-8230-A7A3C78BE6EB
City or vviison
CEI - NCO023906
Page 3 of 5
6. Special Condition A.(4.)of the subject permit requires the permittee to perform Effluent
Pollutant Scans during calendar years 2022, 2023 and 2024. Hominy Creek WRF is in the
process of collecting/completing effluent pollutant scan data, as required.
7. The required Annual Administering and Compliance Monitoring Fee for the current billing
period has been paid. There are no overdue fees.
8. Permittees who own or operate facilities that collect or treat municipal or domestic waste are
required to provide an annual report to its users/customers summarizing the performance of
the collection or treatment system. The report shall be provided no later than sixty days
after the end of the calendar or fiscal year.
The City's FY 2022-2023 Annual Sanitary Sewer System Report is mailed out to all
customers and is available to its customers via the City's website. The content of the report
meets the minimum regulatory requirements and educates its users on the City's collection
and treatment systems.
Findings during the inspection were as follows:
9. The ORC maintains logbook to record daily plant operations. As required by 15A NCAC
02H .0124 (4),the plant has 24 hours per day, seven days per week operator staffing. Daily
routine activities,adjustments made to treatment operations, and equipment status are a few
of the items captured in the daily log.
10. The Hominy Creek Water Reclamation Facility(WRF) laboratory(certification number
130) conducts the analyses for all required parameters except metals and toxicity which are
analyzed by Pace(certification number 677 and 329). Toxicity testing is performed by
Environmental Testing Solutions (ETS) in Ashville(Cert No, 600).
A cursory inspection of the meter calibration logs, standards, and incubator temperatures
showed the laboratory to be compliant with record-keeping requirements. The thermometers
used for the self-monitoring program are labeled, dated and NIST certified.
11. The inspector reviewed/compared the February 2023 and September 2023 eDMR data
against the bench lab data and analytical results. No discrepancies were noted.
12. During the walk-through of the wastewater plant,the inspector observed the following:
a) Preliminary Treatment.
Influent Pump Station. Consists of two (2)mechanical bar screen, (1)serpentine conveyor,
one(1) manual bar screen, and four(4) influent pumps with variable frequency drives. The
area around these units was clean and well maintained. (Note: Enhanced flood protection
D North Carolina Department of Environmental Quality I Division of Water Resources
Raleigh Regional Office 13800 Barren Drive I Raleigh,North Carolina 27609
�� 9197914200

DocuSign Envelope ID:B9873CCE-B01A-47EF-8230-A7A3C78BE6EB
Lily or vvnson
CEI- NCO023906
Page 5 of 5
14. SampIing. As required by the subject permit, influent and effluent sampling is achieved
either by grab or composite sampling. The influent and effluent composite samplers are set
up to collect flow-proportional samples over a 24-hour period. The observed temperature in
each composite sampler refrigerator were less than 5 degrees Celsius. No issues of concern
were observed with the composite samplers.
15. Backup Power. The Hominy Creek WRF has an onsite emergency generator that can run
the whole plant. Wilson Energy owns the Generator, routinely use it for"peak shaving"
and performs necessary maintenance.
16. Outfall 001. The inspector observed the effluent discharge from the outfall pipe to the
Contentnea Creek to be clear with no observable solids or foam. No observable detrimental
impacts to the receiving waters from the effluent discharge were observed.
The overall condition of the subject facility was compliant with the NPDES permit requirements
as observed on the day of the inspection. If you have questions or comments about the
inspection,this report or the requirements to take corrective action(if applicable), please contact
me at(919)791-4232 or you may contact Danny Smith at(919) 791-4248.
Sincerely,
CDocuSigned by:
vts� . aR.am�
B2llt8E8A832740f
Vanessa E. Manuel, Assistant Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources,NCDEQ
Attachment: EPA Water Compliance Inspection Report
Cc: Laserfiche
D E Q�� North Carotins Department of Environmental Quality l Division of Water Resources
Raleigh Regional Office 13800 Barrett Drive I Raleigh,North Carolina 27609
��� 919.791.4200

DocuSign Envelope ID:B9873CCE-B01A-47EF-8230-A7A3C78BE6EB
United States Environmental Protection Agency Form Approved.
EPA Washington,D.C.20460 OMB No.2040-0057
Water Compliance Inspection Report Approval expires 8-31-98
Section A: National Data System Coding(i.e., PCS)
Transaction Code NPDES yr/mo/day Inspection Type Inspector Fac Type
1 IN 1 2 15 1 3 1 NCO023906 I11 121 24/04/17 117 18L�j 19I s I 201
211 1 1 1 1 1 _I I I II I I I I I I I I I I I I I I I I I I I I I I I I I I I I I 1 I f6
Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 GA --------—---—___Reserved- ---
67 701 LJ I 71 I I 72 L ti J 731 I 174 75� f 1 .1 1 I 180
Section B: Facility Data LJ I I I l
Name and Location of Facility Inspected(For Industrial Users discharging to POTW,also include Entry Time/Date Permit Effective Date
POTW name and NPDES permit Number)
09:30AM 24/04l17 21l03/01
Hominy Creek WRF
3100 Stanlonsburg Rd Exit Time/Dale Permit Expiration Date
Wilson NC 278937863 02:30PM 24/04/17 25/05/31
Name(s)of Onsite Representative(s)lTtles(s)/Phone and Fax Number(s) Other Facility Data
1l!
Name,Address of Responsible Official/Title/Phone and Fax Number
Contacted
Brian David Thompson,PO Box 10 Wilson NC 2 7 8 94001 0//252-399-248 5/2 5 22 91 4 0 1 7
No
Section C:Areas Evaluated During Inspection (Check only those areas evaluated)
0 Permit 0 Flow Measurement Operations&Maintenar Records/Reports
Self-Monitoring Progran 0 Sludge Handling Dispos Facility Site Review Compliance Schedules
0 Effluent/Receiving Wate 0 Laboratory
Section D:Summary of Finding/Comments(Attach additional sheets of narrative and checklists as necessary)
(See attachment summary)
Name(s)and Signalure(s)of Inspector(s) Agency/Office/Phone and Fax Numbers Date
Stephen D Smith I Doc 51onedby: DWR/RRO WQ/919-791-4200/ 5/1/2024
. S.►.:��C
9EC87982361 D478
Signature of Managemee udt86+i> dbr: le ncy/Offi ce/P hone and Fax Numbers Date
VAVj-SS& f'. 5/3/2024
EPA Form 3560-3(Rev 9-94)Previous editions are obsolete.
Page#

DocuSign Envelope ID:B9873CCE-B01A-47EF-8230-A7A3C78BE6EB
Permit: NCO023906 Owner-Facility: Hominy Creek WRF
Inspection Date: 0411712024 Inspection Type: Compliance Evaluation
Compliance Schedules Yes No NA NE
Is there a compliance schedule for this facility? ❑ ❑ ■ ❑
Is the facility compliant with the permit and conditions for the review period? ■ ❑ ❑ ❑
Comment: facility is compliant with permit conditions.
Operations & Maintenance Yes No NA NE
Is the plant generally clean with acceptable housekeeping? ■ ❑ ❑ ❑
Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable ■ ❑ ❑ ❑
Solids, pH, DO, Sludge Judge, and other that are applicable?
Comment: Facility is well maintained.
Permit Yes No NA NE
(If the present permit expires in 6 months or less). Has the permittee submitted a new ❑ ❑ ■ ❑
application?
Is the facility as described in the permit? ■ ❑ ❑ ❑
#Are there any special conditions for the permit? ■ ❑ ❑ ❑
Is access to the plant site restricted to the general public? ■ ❑ ❑ ❑
Is the inspector granted access to all areas for inspection? ■ ❑ ❑ ❑
Comment:
Record Keeping Yes No NA NE
Are records kept and maintained as required by the permit? ■ ❑ ❑ ❑
Is all required information readily available, complete and current? ■ ❑ ❑ ❑
Are all records maintained for 3 years (lab. reg. required 5 years)? ■ ❑ ❑ ❑
Are analytical results consistent with data reported on DMRs? ■ ❑ ❑ ❑
Is the chain-of-custody complete? ■ ❑ ❑ ❑
Dates, times and location of sampling ■
Name of individual performing the sampling ■
Results of analysis and calibration ■
Dates of analysis ■
Name of person performing analyses ■
Transported COCs ■
Are DMRs complete: do they include all permit parameters? ■ ❑ ❑ ❑
Has the facility submitted its annual compliance report to users and DWQ? ■ ❑ ❑ ❑
Page# 3

DocuSign Envelope ID: B9873CCE-B01A-47EF-8230-A7A3C78BE6EB
Permit: NC0023906 Owner-Facility: Hominy Creek WRF
Inspection Date: 04/17/2024 Inspection Type: Compliance Evaluation
Aerobic Digester Yes No NA NE
#Is the odor acceptable? ■ ❑ ❑ ❑
#Is tankage available for properly waste sludge? ■ ❑ ❑ ❑
Comment:
Solids Handling Equipment Yes No NA NE
Is the equipment operational? M ❑ ❑ ❑
Is the chemical feed equipment operational? ■ ❑ ❑ ❑
Is storage adequate? ■ ❑ ❑ ❑
Is the site free of high level of solids in filtrate from filter presses or vacuum filters? 0 ❑ ❑ ❑
Is the site free of sludge buildup on belts and/or rollers of filter press? ■ ❑ ❑ ❑
Is the site free of excessive moisture in belt filter press sludge cake? M ❑ ❑ ❑
The facility has an approved sludge management plan? ❑ ❑ ❑
Comment:
Drying Beds Yes No NA NE
Is there adequate drying bed space? M ❑ ❑ ❑
Is the sludge distribution on drying beds appropriate? 0 ❑ ❑ ❑
Are the drying beds free of vegetation? ❑ 0 ❑ ❑
# Is the site free of dry sludge remaining in beds? ❑ ❑ 0 ❑
Is the site free of stockpiled sludge? 0 ❑ ❑ ❑
Is the filtrate from sludge drying beds returned to the front of the plant? ■ ❑ ❑ ❑
# Is the sludge disposed of through county landfill? ■ ❑ ❑ ❑
# Is the sludge land applied? 0 ❑ ❑ ❑
(Vacuum filters) Is polymer mixing adequate? ❑ ❑ ❑ ■
Comment: Solids from City's sewer vac tracks are dewatered into drying bed -those solids are
Perodically taken to Sampson Co. Landfil.
WWTP has adequate solids storage and stored solids are covered. No observed
concenrs of stroa a volume. -Granville Farms is the hauler. A portion of the d in
beds are not in use. This is the section that has vegetation growth.
Chemical Feed Yes No NA NE
Is containment adequate? 0 ❑ ❑ ❑
Is storage adequate? 0 ❑ ❑ ❑
Are backup pumps available? ❑ ❑ ❑
Page# 5

DocuSign Envelope ID: B9873CCE-B01A-47EF-8230-A7A3C78BE6EB
Permit: NCO023906 Owner-Facility: Hominy Creek WRF
Inspection Date: 04/1 712 0 24 Inspection Type: Compliance Evaluation
Grit Removal Yes No NA NE
Type of grit removal
a.Manual ❑
b.Mechanical
Is the grit free of excessive organic matter? 0 ❑ ❑ ❑
Is the grit free of excessive odor? ■ ❑ ❑ ❑
#Is disposal of grit in compliance? 0 ❑ ❑ ❑
Comment:
Equalization Basins Yes No NA NE
Is the basin aerated? ❑ ❑ ❑
Is the basin free of bypass lines or structures to the natural environment? ❑ ❑ ❑
Is the basin free of excessive grease? ❑ ❑ ❑
Are all pumps present? ❑ ❑ ❑ ■
Are all pumps operable? ❑ ❑ ❑ ■
Are float controls operable? ❑ ❑ ❑
Are audible and visual alarms operable? ❑ ❑ ❑
#Is basin size/volume adequate? ❑ ❑ ❑ ■
Comment: EQ basin are retrofitted from their on ianl use as pre-aeraton tanks. EQ basins were
operable but not in use and empty during the inspection.
Primary Clarifier Yes No NA NE
Is the clarifier free of black and odorous wastewater? ■ ❑ ❑ ❑
Is the site free of excessive buildup of solids in center well of circular clarifier? 0 ❑ ❑ ❑
Are weirs level? 0 ❑ ❑ ❑
Is the site free of weir blockage? N ❑ ❑ ❑
Is the site free of evidence of short-circuiting? 0 ❑ ❑ ❑
Is scum removal adequate? ■ ❑ ❑ ❑
Is the site free of excessive floating sludge? 0 ❑ ❑ ❑
Is the drive unit operational? ■ ❑ ❑ ❑
Is the sludge blanket level acceptable? ❑ ❑ ❑
Is the sludge blanket level acceptable? (Approximately '/4 of the sidewall depth) ❑ ❑ ❑
Comment:
Page# 7

DocuSign Envelope ID:B9873CCE-B01A47EF-8230-A7A3C78BE6EB
Permit: NCO023906 Owner-Facility: Hominy Creek WRF
Inspection Date: 04/17/2024 Inspection Type: Compliance Evaluation
Effluent Sampling Yes No NA NE
Is composite sampling flow proportional? 0 ❑ ❑ ❑
Is sample collected below all treatment units? 0 ❑ ❑ ❑
Is proper volume collected? ❑ ❑ ❑ 0
Is the tubing clean? 0 ❑ ❑ ❑
# Is proper temperature set for sample storage (kept at less than or equal to 6.0 ■ ❑ ❑ ❑
degrees Celsius)?
Is the facility sampling performed as required by the permit(frequency, sampling type ■ ❑ ❑ ❑
representative)?
Comment:
Page# 9