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Home My WebLink AboutNC0063096_Compliance Evaluation Inspection_20221220North Carolina Department of Environmental Quality Division of Water Resources Raleigh Regional Office 3800 Barrett Drive Raleigh, North Carolina 27609 919.791.4200 December 20, 2022 Town of Holly Springs Attn: Kendra D. Parrish PO Box 8 Holly Springs, NC 27540 Subject: NPDES Compliance Evaluation Inspection Utley Creek Water Reclamation Facility NPDES Permit No. NC0063096 Wake County Dear Ms. Parrish: On December 19, 2022, Stephanie Goss of the Raleigh Regional Office (RRO), conducted an inspection at the subject facility. The cooperation of Terry Foster and Casey Denton was greatly appreciated. Findings during the inspection were as follows: 1.The current NPDES permit was issued effective November 1, 2017 and expires on July 31, 2021. The Division is in the process of renewing this NPDES permit. The renewal application was received on January 29, 2021. 2.The WW-4 facility is permitted to treat 6.0 MGD of treated wastewater and consists of the following components: two mechanical bar screens with centrifugal grit chambers, influent composite sampler, influent flow meter, Parshall flume, anaerobic phosphorus removal basins, primary and secondary anoxic basins, three reaeration basins, chemical feed with bulk storage, three secondary clarifiers, four tertiary cloth disc filters, two ultraviolet disinfection banks, effluent flow meter, effluent composite sampler, cascade aeration, RAS fine screenings process, two aerobic digesters, dewatering screw press and two back up power generators. 3.The plant discharges to Utley Creek, which is classified as Class C waters in the Cape Fear River Basin. 4. The influent flow meter is calibrated on a yearly basis and was calibrated on February 26, 2021 by FCx, Instrumentation Services. 5.The refrigerated influent and effluent units were maintained at the proper temperature, < 6 degrees C. The effluent unit is programmed flow proportionally. The tubing looked good. DocuSign Envelope ID: B33FB374-19CC-42FA-A2D6-2353E38179E1 North Carolina Department of Environmental Quality Division of Water Resources Raleigh Regional Office 3800 Barrett Drive Raleigh, North Carolina 27609 919.791.4200 Page 2 of 3 6. At the time of the inspection, two of the reaeration basins were in service. The two basins appeared to be operating satisfactorily. There was foam on approximately 50% of the surface basin #2 and 10% on the surface of basin #3. 7. At the time of the inspection, two clarifiers were in operation and appeared to be operating satisfactorily. The overflow weirs are covered and were clean at the time of the inspection. Both clarifiers are eighteen feet in depth and a sludge judge showed the sludge depth to be approximately two feet deep for clarifier #1 and three feet deep for clarifier #2. 8. The disc filters appeared to be operating satisfactorily. The filtered effluent appeared clear and free of solids. 9. The two-bank ultraviolet disinfection system was in operation during the inspection and appeared to be operating satisfactorily. The ultraviolet bulbs are cleaned every two to three weeks in the summer and every month in the winter and inform SCADA when they are low in intensity. The facility keeps multiple spare bulbs in storage near the ultraviolet system. 10. The effluent flow meter was calibrated on February 26, 2021 by FCx, Instrumentation Services and is checked with the Parshall Flume. 11. The post aeration system was operating satisfactorily. The effluent was clear and free of excess solids. 12. At the time of the inspection, digesters #1 was in use and contained approximately 8-9 feet of sludge. Digester #1 is eighteen feet deep with a five hundred-thousand-gallon capacity and digester # 2 is eighteen feet deep with a one-million-gallon capacity. The sludge is sent directly to the gravity belts where the polymer is added and then the sludge is pressed into a cake form. The water is then sent back to the headworks of the facility and McGill picks up the cakes daily. 13. Mr. Foster stated the two onsite diesel generators are tested under load weekly. 14. A review of discharge monitoring report (DMR) data for the period April 2022 through October 2022 showed all required monitoring was performed and that the facility complied with all permit limits. 15. A cursory review of laboratory and DMR data for March 2022 showed consistent reporting of results. 16. A cursory review of calibration logs showed acceptable calibration for the on-site parameters. 17. Mr. Foster stated there are two industries in the Town of Holly Springs which are the Wake County landfill and Seqirus Pharmaceuticals. DocuSign Envelope ID: B33FB374-19CC-42FA-A2D6-2353E38179E1 North Carolina Department of Environmental Quality Division of Water Resources Raleigh Regional Office 3800 Barrett Drive Raleigh, North Carolina 27609 919.791.4200 Page 3 of 3 18. The effluent discharge appeared free of excess solids. No detrimental impacts to Utley Creek were observed. 19. An operator logbook is kept regarding all plant operations. Also, Mr. Foster stated he keeps an ORC logbook online as well. 20. Mr. Foster stated that an Annual Compliance report is distributed yearly via the Town’s website and at Town Hall. The facility is compliant with the NPDES permit conditions as a result of this inspection. The plant is well maintained, very clean and the ORC’s attention to detail is commendable. If you have questions concerning this report please contact Stephanie Goss at 919-791-4256 or Stephanie.goss@ncdenr.gov. Sincerely, Vanessa E. Manuel, Assistant Regional Supervisor Water Quality Regional Operations Section Raleigh Regional Office Division of Water Resources, NCDEQ cc: Laserfiche DocuSign Envelope ID: B33FB374-19CC-42FA-A2D6-2353E38179E1 EPA United States Environmental Protection Agency Washington, D.C. 20460 Water Compliance Inspection Report Form Approved. OMB No. 2040-0057 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 N 52 NC0063096 22/12/19 C S31112171819 20 21 66 Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ----------------------Reserved------------------- N67707172 73 74 75 80 Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES permit Number) Holly Springs WWTP 150 Treatment Plant Rd Holly Springs NC 27540 Entry Time/Date Permit Effective Date Exit Time/Date Permit Expiration Date 09:00AM 22/12/19 17/11/01 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Terry Ray Foster/ORC/919-577-1090/ Other Facility Data 11:00AM 22/12/19 21/07/31 Name, Address of Responsible Official/Title/Phone and Fax Number Seann Byrd,PO Box 8 Holly Springs NC 275400008//919-577-3151/9195772280 Contacted No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenance Records/Reports Self-Monitoring Program Facility Site Review Compliance Schedules Effluent/Receiving Waters Laboratory 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 Stephanie Goss DWR/RRO WQ/919-791-4200/ Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page#1 12/20/2022 DocuSign Envelope ID: B33FB374-19CC-42FA-A2D6-2353E38179E1 12/20/2022 NPDES yr/mo/day 22/12/19 Inspection Type C3111218 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) NC0063096 17 Page#2 DocuSign Envelope ID: B33FB374-19CC-42FA-A2D6-2353E38179E1 Permit:NC0063096 Inspection Date:12/19/2022 Owner - Facility: Inspection Type: Holly Springs WWTP 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: 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: 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: B33FB374-19CC-42FA-A2D6-2353E38179E1 Permit:NC0063096 Inspection Date:12/19/2022 Owner - Facility: Inspection Type: Holly Springs WWTP Compliance Evaluation Record Keeping Yes No NA NE (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? Is the backup operator certified at one grade less or greater than the facility classification? Is a copy of the current NPDES permit available on site? Facility has copy of previous year's Annual Report on file for review? Comment: Effluent Pipe Yes No NA NE 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: Flow Measurement - Effluent Yes No NA NE # Is flow meter used for reporting? Is flow meter calibrated annually? Is the flow meter operational? (If units are separated) Does the chart recorder match the flow meter? Comment: Flow Measurement - Influent Yes No NA NE # Is flow meter used for reporting? Is flow meter calibrated annually? Is the flow meter operational? (If units are separated) Does the chart recorder match the flow meter? Comment: Bar Screens Yes No NA NE Type of bar screen a.Manual b.Mechanical Page#4 DocuSign Envelope ID: B33FB374-19CC-42FA-A2D6-2353E38179E1 Permit:NC0063096 Inspection Date:12/19/2022 Owner - Facility: Inspection Type: Holly Springs WWTP Compliance Evaluation Bar Screens Yes No NA NE Are the bars adequately screening debris? Is the screen free of excessive debris? Is disposal of screening in compliance? Is the unit in good condition? Comment: Grit Removal Yes No NA NE Type of grit removal a.Manual b.Mechanical Is the grit free of excessive organic matter? Is the grit free of excessive odor? # Is disposal of grit in compliance? Comment: Secondary 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? Are weirs level? Is the site free of weir blockage? 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? Is the return rate acceptable (low turbulence)? Is the overflow clear of excessive solids/pin floc? Is the sludge blanket level acceptable? (Approximately ¼ of the sidewall depth) Comment: Filtration (High Rate Tertiary)Yes No NA NE Type of operation:Cross flow Is the filter media present? Is the filter surface free of clogging? Page#5 DocuSign Envelope ID: B33FB374-19CC-42FA-A2D6-2353E38179E1 Permit:NC0063096 Inspection Date:12/19/2022 Owner - Facility: Inspection Type: Holly Springs WWTP Compliance Evaluation Filtration (High Rate Tertiary)Yes No NA NE 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: Disinfection - UV Yes No NA NE 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: Standby Power Yes No NA NE Is automatically activated standby power available? Is the generator tested by interrupting primary power source? Is the generator tested under load? Was generator tested & operational during the inspection? Do the generator(s) have adequate capacity to operate the entire wastewater site? Is there an emergency agreement with a fuel vendor for extended run on back-up power? Is the generator fuel level monitored? Comment: Laboratory Yes No NA NE Are field parameters performed by certified personnel or laboratory? Are all other parameters(excluding field parameters) performed by a certified lab? # Is the facility using a contract lab? # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees Celsius)? Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees? Page#6 DocuSign Envelope ID: B33FB374-19CC-42FA-A2D6-2353E38179E1 Permit:NC0063096 Inspection Date:12/19/2022 Owner - Facility: Inspection Type: Holly Springs WWTP Compliance Evaluation Laboratory Yes No NA NE Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees? Comment: Effluent Sampling Yes No NA NE Is composite sampling flow proportional? Is sample collected below all treatment units? Is proper volume collected? Is the tubing clean? # 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: Oxidation Ditches Yes No NA NE Are the aerators operational? Are the aerators free of excessive solids build up? # Is the foam the proper color for the treatment process? Does the foam cover less than 25% of the basin’s surface? Is the DO level acceptable? Are settleometer results acceptable (> 30 minutes)? Is the DO level acceptable?(1.0 to 3.0 mg/l) Are settelometer results acceptable?(400 to 800 ml/l in 30 minutes) There was foa on approx. 50% of thesurface of basin #2 due to the basin just being brought into use and the empty basin had duckweek and some debris in it. Mr. Foster stated they foam is being eliminated as the basin is in operation. Comment: Page#7 DocuSign Envelope ID: B33FB374-19CC-42FA-A2D6-2353E38179E1