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Home My WebLink AboutNC0024112_Compliance Evaluation Inspection_20240604 (2)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 u 3 I NC0024112 111 121 24/05/03 I17 18 LC] I 19 I s I 20L] 21111I I I I 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 II I I I I I r6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---------------------- Reserved ------------------- 67 I 72 I ni I 71 I 74 79 I I I I I I I80 701 I 71 I LL -1 I I LJ Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include Entry Time/Date Permit Effective Date POTW name and NPDES Dermit Number) 09:OOAM 24/05/03 22/04/01 Hamby Creek WWTP 110 Optimist Park Rd Exit Time/Date Permit Expiration Date Thomasville NC 27360 12:30PM 24/05/03 26/04/30 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Allen Beck, //336-475-4246/3364760130 No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit 0 Flow Measurement Operations & Maintenar 0 Records/Reports Facility Site Review 0 Effluent/Receiving Wate Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) Name(s) and Signature(s) of Inspector(s) Agency/Office/Phone and Fax Numbers Date Gary Hudson DWR/Division of Water Qua Iity/336-776-9694/ DocuSigned by: Ras", 5/23/2024 Signa�u°re oY V`Canagement Q A Reviewer Agency/Office/Phone and Fax Numbers Date — DocuSigned by: 6/4/2024 Lon T. Snider Lam- T. Sti,dv r "-145B49E225C9 EA. EPA Form 3560-3 (Rev 9-94) Previous editions are Nsolete. Page# NPDES yr/mo/day Inspection Type NCO024112 I11 12I 24/05/03 117 18 i c i (Cont.) Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) NCO024112 — Thomasville Hamby Creek WWTP May 3, 2024 The permit became effective on 02/24/2022 and will expire on 04/30/2026. The WWTP appeared to be extremely well maintained and operated. The WWTP suffered an upset condition this past December and January due to severe natural conditions. The facility is a Grade 4 classification and is permitted for 6 MGD with 24-hour coverage year-round. This is a 5-stage Bardenpho oxidation system designed for advanced nutrient removal. Preliminary treatment consists of influent filter screening equipment and solids classifier grit removal system. The influent wastewater is mixed with the return activated sludge before entering the first stage of the process, an anaerobic zone to facilitate phosphorus removal. From the anaerobic zone it enters the second stage of the process, which is an anoxic zone to facilitate den itrification. The following three stages of the process are an aerobic zone, a second anoxic zone, and a final aerobic reaeration zone. The final stage of the secondary treatment process is three secondary clarifiers. The effluent from the secondary clarifiers is treated with three tertiary disk filter units. The effluent from the tertiary filters is treated with ultraviolet disinfection and reaeration before being discharged into Hamby Creek, class C waters in the Yadkin -Pee Dee River Basin. All records are very detailed and kept in a very orderly manner. The effluent was very clear at the time of the inspection. Page# Permit: NCO024112 Inspection Date: 05/03/2024 Owner -Facility: Hamby Creek WWTP Inspection Type: Compliance Evaluation Permit (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: The permit became effective on 02/24/2022 and will expire on 04/30/2026. Operations & Maintenance 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? Yes No NA NE ❑ ❑ ■ ❑ ■ ❑ ❑ ❑ ❑ ■ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Yes No NA NE ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Comment: The WWTP appeared to be extremely well maintained and operated. The WWTP suffered an upset condition this past December and January due to severe natural conditions. 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? ■ ❑ ❑ ❑ (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified ■ ❑ ❑ ❑ operator on each shift? Is the ORC visitation log available and current? ■ ❑ ❑ ❑ Is the ORC certified at grade equal to or higher than the facility classification? ■ ❑ ❑ ❑ Page# 3 Permit: NCO024112 Owner -Facility: Hamby Creek WWTP Inspection Date: 05/03/2024 Inspection Type: Compliance Evaluation Record Keeping Yes No NA NE Is the backup operator certified at one grade less or greater than the facility 0 ❑ ❑ ❑ classification? Is a copy of the current NPDES permit available on site? 0 ❑ ❑ ❑ Facility has copy of previous year's Annual Report on file for review? 0 ❑ ❑ ❑ Comment: All records are very detailed and kept in a very orderly manner. Bar Screens Yes No NA NE Type of bar screen a.Manual ❑ b.Mechanical Are the bars adequately screening debris? 0 ❑ ❑ ❑ Is the screen free of excessive debris? ■ ❑ ❑ ❑ Is disposal of screening in compliance? ■ ❑ ❑ ❑ Is the unit in good condition? 0 ❑ ❑ ❑ Comment: Aeration Basins Yes No NA NE Mode of operation Ext. Air Type of aeration system Diffused Is the basin free of dead spots? 0 ❑ ❑ ❑ Are surface aerators and mixers operational? N ❑ ❑ ❑ Are the diffusers operational? 0 ❑ ❑ ❑ Is the foam the proper color for the treatment process? 0 ❑ ❑ ❑ Does the foam cover less than 25% of the basin's surface? 0 ❑ ❑ ❑ Is the DO level acceptable? 0 ❑ ❑ ❑ Is the DO level acceptable?(1.0 to 3.0 mg/1) 0 ❑ ❑ ❑ Comment: This is a 5-stage Bardenpho oxidation system designed for advanced nutrient removal. Secondary Clarifier Is the clarifier free of black and odorous wastewater? Is the site free of excessive buildup of solids in center well of circular clarifier? Are weirs level? Is the site free of weir blockage? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Page# 4 Permit: NC0024112 Inspection Date: 05/03/2024 Secondary Clarifier Is the site free of evidence of short-circuiting? Is scum removal adequate? Is the site free of excessive floating sludge? Is the drive unit operational? Owner -Facility: Hamby Creek WWTP Inspection Type: Compliance Evaluation Is the return rate acceptable (low turbulence)? Is the overflow clear of excessive solids/pin floc? Is the sludge blanket level acceptable? (Approximately'/4 of the sidewall depth) Comment: Filtration (High Rate Tertiary) Type of operation: Is the filter media present? Is the filter surface free of clogging? Is the filter free of growth? Is the air scour operational? Is the scouring acceptable? Is the clear well free of excessive solids and filter media? Comment: The tertiary filtration system uses three disk filters. Disinfection - UV Are extra UV bulbs available on site? Are UV bulbs clean? Is UV intensity adequate? Is transmittance at or above designed level? Is there a backup system on site? Is effluent clear and free of solids? Comment: Effluent Pipe Is right of way to the outfall properly maintained? Are the receiving water free of foam other than trace amounts and other debris? If effluent (diffuser pipes are required) are they operating properly? Comment: The effluent was very clear at the time of the inspection. Yes No NA NE ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Yes No NA NE ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Yes No NA NE ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Yes No NA NE ❑ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ Page# 5 Permit: NC0024112 Inspection Date: 05/03/2024 Effluent Pipe Owner -Facility: Hamby Creek WWTP Inspection Type: Compliance Evaluation Yes No NA NE Page#