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HomeMy WebLinkAboutNC0066516_2024 Compliance Evaluation Inspection_20240304 DocuSign Envelope ID:664358C3-FC03-4BCC-9CED-C10192BC1E31 ROY COOPERy' s Governor ` ELIZABETH S. BISER J . Secretary yr' a2 RICHARD E. ROGERS,JR. ``g` ^"""` Director NORTH CAROLINA Environmental Quality March 4,2024 Town of Fuquay-Varina Attn: Michael Wagner,Public Utilities Director 134 N Main Street Fuquay-Varina,NC 27526-6267 Subject: Compliance Evaluation Inspection Terrible Creek WWTP NPDES Permit NCO066516 Wake County Dear Mr.Wagner: On February 21, 2024, Donald Smith, and Danny Smith from the Raleigh Regional Office of the Division of Water Resources conducted a Compliance Evaluation Inspection(CEI)of the Terrible Creek Wastewater Treatment Plant located at 5812 Hilltop Road in Fuquay-Varina. The purpose of this visit was to review the facility's compliance with the subject NPDES permit. During the inspection,the presence and cooperation of Adam Stepheson,Wastewater Treatment Plant Supervisor(ORC),Troy King,Backup ORC, and Heather Adams,Assistant Public Utilities Director were greatly appreciated and very helpful to this review process. The Terrible Creek WWTP is located along Hilltop Road, in Fuquay-Varina,Wake County. The facility is a Grade IV Biological Water Pollution Control System with an as-built and permitted flow of 3 MGD with approval to expand to 6 MGD. Through compliance with NPDES permit(NC0066516),the Town of Fuquay-Varina is authorized to discharge treated wastewater through outfall 001 to receiving waters designated as an unnamed Terrible Creek a waterbody classified as C Nutrient Sensitive Waters(NSW)within the Neuse River Basin. This NPDES compliance evaluation inspection and requested follow-up response consist of the following: • Review of the NPDES permit; • Review of the owner/facility information; • Review of November 2021-October 2023 monitoring data and compliance history; • On-site inspection of the wastewater treatment units; • On-site inspection of the discharge outfall; and • Request for written response from the Town of Fuquay-Varina. Findings during the pre-inspection file review are as follows: 1. The current NPDES permit(NC0066516)was issued effective June 9, 2021, and will expire April 30, 2026. The permittee is not authorized to discharge after the expiration date. To request authorization to discharge after the expiration date,you will need to submit a permit renewal application at least 180 days prior to the expiration of the permit. 2. The treatment component, as listed in the subject NPDES permit, includes the following: D_E Qom,- North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh,North Carolina 27699-1617 919.707.9000 DocuSign Envelope ID:664358C3-FC03-4BCC-9CED-C10192BC1E31 Terrible Creek WWTP -CEI Page 2 of 5 Influent Pump Station; Mechanical coarse bar screen;Mechanical step bar screens manual bar rack, Grit Removal,Flow distribution box,Two(2) 5-stage conventional BNR basins; Two(2) clarifiers, RAS pump station,two(2)ultra-screen disc filters,UV disinfection, Effluent flow measurement, WAS pump station, One (1)aerated sludge holding tank; Two (2) 3-belt filters presses with gravity thickening ability and stand by power. Not listed in the permit were the following treatment system components: Three equalization basins. [two (2)250,000 gallon and one(1) 500,000 gallon equalization basins.] These EQ basins were operational but not in use at time of the inspection. 3. Since the implementation of EPA's NPDES Electronic Reporting Rule,the City has been submitting its discharge monitoring reports(DMRs)electronically, instead of on paper. The first DMR the Division received electronically from the permittee was for June 2014. Please note:As of October 7,2019, all NPDES discharge monitoring reports submitted in the eDMR system are accepted with electronic signature,signed hardcopies are no longer required to be mailed to the Division. 4. The Town has designated Adam Stephenson as the facility's ORC and two(2)operators, Chris Grimes and Troy King,as the backup ORCs. All designated operators have a Grade 4 Certification, and all have an active certification status. 5. For the review period November 2021 through October 2023,no DMR limit violations were detected. Also, no penalty assessments have been issued since December 2018. 6. Special Condition A.(4.)of the subject permit requires the permittee to perform Effluent Pollutant Scans during calendar years 2023,2024 and 2025, and the samples must be collected in different calendar quarters to represent seasonal variation. The Town has conducted 2023 analysis and plans/processes are in place to meet the balance of the Effluent Pollutant Scan permit requirements. 7. Special Condition A.(10.)of the subject permit requires the permittee to develop and implement a Mercury Minimization Plan(MMP)within 180 days of the permit effective date and have available for inspection on- site. As requested during the inspection, Heather Adams provided RRO an electronic copy of the MMP for review on February 26, 2024. 8. The required Annual Administering and Compliance Monitoring Fee for the current billing period was paid. There are no overdue fees. 9. 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 Town's FY 2022-2023 Annual Sanitary Sewer System Report is available to its customers via the Town's website. It was also explained that this report is available at the Public Service Center and in DocuSign Envelope ID:664358C3-FC03-4BCC-9CED-C10192BC1E31 Terrible Creek WWTP -CEI Page 3 of 5 Quarterly Newsletter. The content of the report meets the minimum regulatory requirements and educates its users on the Town collection and treatment systems. Findings during the inspection were as follows: 10. The ORC maintains a bound,paginated logbook to record daily plant operations. 11. Meritech Inc. (certification number 165), is certified for and conducts the analyses for all required parameters, except DO,temperature, and pH. The Town conducts and is field certified for DO, temperature, and pH(field certification number 5527). A cursory inspection of the meter calibration logs and standards showed the laboratory to be compliant with record-keeping requirements. (Note: combined pH meter and DO meter was off-site and in use during the inspection.) The thermometers used for the self-monitoring program are NIST certified and are replaced annually. 12. The inspector compared the February 2023 and November 2023 eDMR data against the bench lab data and analytical results. No discrepancies were noted. 13. During the walk-through of the wastewater plant,the inspector observed the treatment units listed in item 2 above. The inspector noted the following observations of the treatment components: a) Preliminary Treatment. The Preliminary Treatment Facility(PTF) consisting of the-Influent Pump Station;mechanical step bar screens,manual bar rack, grit removal, flow distribution box,were in operation and did not appear to have any issues that would affect proper operation. (Note: One of two grit removal trains were in operation during inspection. The ORC explained that flows are switched over every quarter and maintenance is performed on the respective offline grit removal train during this period.) The area around these units were clean and well maintained. The ORC informed the inspector that the screenings and grit are collected in a dumpster and hauled to the landfill for disposal. No issues of concern were observed with the preliminary treatment. b) Primary Treatment/Secondary Treatment. Plant staff use Two(2) 5-stage conventional BNR basins; Two(2)clarifiers. One of the BNR units(BNR unit#2)was offline due to problems with the mixers. Problems were noted with the mixers,blades, and mounting assemblies. Mounting assembly repair parts were delivered to WWTP facility during the inspection and repairs are schedule to begin Monday,February 26t1i. Similar issues with the mixers are also a concern with BNR unit#1. The facility is continuing to work with their manufacture and their engineers,to affect repairs to BNR basins that remain under the manufacture's warrantee. One of the two secondary clarifiers(clarifier number#1)was out of service for repairs due to issues with the plate in the center column. Clarifier number#2 is approximately 20 feet deep and was in operation. During the inspection,the Backup ORC measured the sludge level in clarifier#2 at approximately 3.0 ft. The depth of this DocuSign Envelope ID:664358C3-FC03-4BCC-9CED-C10192BC1E31 Terrible Creek WWTP -CEI Page 4 of 5 clarifier approximately 20 ft. The inspector observed some pin floc and floating solids/foam within the unit. c) Tertiary Treatment. The inspector observed the two(2)ultra-screen disc filters. Both disc filters were in operation and no issues of concern were observed with the tertiary treatment. d) Disinfection. The facility disinfects the treated wastewater prior to discharge using ultra-violet light. The facility does not use chlorine as a method of disinfection. No issues of concern were observed with the disinfection system. e) Solids Handling. The inspector observed the solids handling equipment(WAS pump station, One (1) aerated sludge holding tank; Two(2) 3-belt filters presses with gravity thickening ability were observed. No issues of concern were observed with the solids handling treatment units. Hauler—The Town uses McGill Compost. 14. Effluent Flow is reported. The effluent flow meter is calibrated quarterly by YSI. The effluent flow meter was last calibrated on January 11,2024. No issues of concern were observed with the flow measurement device. 15. As required by the subject permit, influent and effluent sampling is achieved either by grab or composite sampling. The effluent composite samplers are set up to collect flow-proportional samples over a 24-hour period. The observed temperature for both the influent and effluent composite sampler refrigerators were less than 5 degrees Celsius. The operator stated the tubing in the composite samplers is changed quarterly. No issues of concern were observed with the composite samplers. Note: The influent sampling station is located outside the WWTP facility's fencing footprint. However, this influent sampling location has its own fence and access is secure and appropriate. 16. The facility has one emergency generator that will operate the entire WWTP. The operators test the generators weekly and operate it under full load. 17. The inspector observed the effluent discharge from the outfall pipe to Terrible Creek to be clear with no observable solids or foam. No observable detrimental impacts to the receiving waters from the effluent discharge were observed. NPDES Stormwater General Permit—NCG110000. Note: DWR staff did not conduct a General Stormwater Permit inspection for the subject Treatment Works. The Division of Energy Mineral and Land Resources (DEMLR)has oversight over this program element. If you should have questions regarding this permit, coverage, or permit conditions components please do not hesitate to contact Raleigh Regional Office(919)791- 4200. You should request assistance form DEMLR stormwater staff on these matters. The below items/bullets are for your reference. • The general stormwater permit(NCG110000) applies to all owners or operators of stormwater point source discharges associated with establishments primarily engaged in activities classified as Treatment Works treating domestic sewage or any other sewage sludge or Wastewater Treatment Device or System,used in the storage,treatment,recycling,and reclamation of municipal or domestic sewage [including lands dedicated to the disposal of sewage sludge that are located within the confines of the facility],with a design flow of 1.0 million gallons per day or more. DocuSign Envelope ID:664358C3-FC03-4BCC-9CED-C10192BC1E31 Terrible Creek WWTP -CEI Page 5 of 5 • Stormwater conditions includes but are not limited to the development and operations of Stormwater Pollution Prevention Plan(SPPP). This plan should be fully developed, implemented, and updated annually. • Please be sure to conduct appropriate qualitative and analytical monitoring, as required by your permit. • Detailed information that includes a list of all of the types Stormwater General Permits, including NCG110000,Notice of Intent(permit application),DMR forms, qualitative monitoring forms can be found and the NC DEMLR web site for stormwater. [click on Post construction stormwater. In the menu on the right look for NPDES Industrial Program and then click on General Industrial Permits] • You are welcome to contact Danny Smith at danny.smith&deq.nc.gov for more information and help with contacting staff if you have any questions. Request for follow-up written response from the Town of Fuguay-Varina. Within 60-days of receipt of this letter,please respond back to Raleigh Regional Office,Attention Danny Smith (danny.smith@deq.nc.gov)with a written account describing the following: • Provide a detailed account of the repairs undertaken to repair BNR unit#2 and Clarifier unit#1 and schedule for repairs to be complete. • Provide details on the repairs that remain to be completed on BNR unit#1 and anticipated schedule for the repairs to be completed. 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 via email at Vanessa.Manuel@deq.nc.gov. Sincerely, DocuSigned by: Eatit,SSa f. B2916E6AS,2144F... Vanessa 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 DocuSign Envelope ID:664358C3-FC03-4BCC-9CED-C10192BC1 E31 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 I 3 I NCO066516 111 121 24/02/21 I17 18 I C I 19 I G I 201 211111 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 1166 Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ----------------------Reserved------------------- 67 70 J 71 tyI 72 LnJ I 73 1 74 75 I I I I 80 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) 09:30AM 24/02/21 21/07/01 Terrible Creek WWTP NCSR 2751 Hilltop Rd Exit Time/Date Permit Expiration Date Fuquay Varina NC 27526 01:OOPM 24/02/21 26/04/30 Name(s)of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Adam Parker Step henson/ORCH Name,Address of Responsible Official/Title/Phone and Fax Number Contacted Michael P Wagner,134 N Main St Fuquay Varina NC 275266267/Public Utilites Director/919-272-7826/ No Section C:Areas Evaluated During Inspection (Check only those areas evaluated) Permit 0 Flow Measurement Operations&Maintenar Records/Reports Self-Monitoring Progran 0 Sludge Handling Dispo: Facility Site Review Effluent/Receiving WatE 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 Stephen D Smith DWR/RRO WQ/919-791-4200/ 3/4/2024 Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date DocuS igned by: UAL1t,SSA hawa 3/5/2024 B2916E6A 3 1 F.. EPA Form 356 ev 9-94)Previous editions are obsolete. Page# 1 DocuSign Envelope ID:664358C3-FC03-4BCC-9CED-C10192BC1 E31 NPDES yr/mo/day Inspection Type 1 31 NCO066516 I11 12I 24/02/21 117 18 i c i Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Page# 2 DocuSign Envelope ID:664358C3-FC03-4BCC-9CED-C10192BC1 E31 Permit: NCO066516 Owner-Facility: Terrible Creek WWTP Inspection Date: 02/21/2024 Inspection Type: Compliance Evaluation Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? 0 ❑ ❑ ❑ 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 0 ❑ ❑ ❑ application? Is the facility as described in the permit? ❑ 0 ❑ ❑ #Are there any special conditions for the permit? ❑ ❑ ■ ❑ Is access to the plant site restricted to the general public? 0 ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? ❑ ❑ ❑ Comment: EQ basins are not listed in pemit. Pump Station - Influent Yes No NA NE Is the pump wet well free of bypass lines or structures? 0 ❑ ❑ ❑ Is the wet well free of excessive grease? 0 ❑ ❑ ❑ Are all pumps present? 0 ❑ ❑ ❑ Are all pumps operable? 0 ❑ ❑ ❑ Are float controls operable? ❑ ❑ ❑ Is SCADA telemetry available and operational? 0 ❑ ❑ ❑ Is audible and visual alarm available and operational? ❑ ❑ ❑ ■ Comment: 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? 0 ❑ ❑ ❑ Is the unit in good condition? 0 ❑ ❑ ❑ Comment: Page# 3 DocuSign Envelope ID:664358C3-FC03-4BCC-9CED-C10192BC1 E31 Permit: NCO066516 Owner-Facility: Terrible Creek WWTP Inspection Date: 02/21/2024 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? ■ ❑ ❑ ❑ Is the grit free of excessive odor? 0 ❑ ❑ ❑ # Is disposal of grit in compliance? 0 ❑ ❑ ❑ Comment: Flow Measurement - Influent Yes No NA NE # Is flow meter used for reporting? 0 ❑ ❑ ❑ Is flow meter calibrated annually? 0 ❑ ❑ ❑ Is the flow meter operational? 0 ❑ ❑ ❑ (If units are separated) Does the chart recorder match the flow meter? ❑ ❑ ❑ 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 basins n=3 f(2) 250,OOOgal and (1) 500,000 galll are operational but none are not in use at time of the inspection. Aeration Basins Yes No NA NE Mode of operation Type of aeration system Surface Is the basin free of dead spots? 0 ❑ ❑ ❑ Are surface aerators and mixers operational? N ❑ ❑ ❑ Are the diffusers operational? 0 ❑ ❑ ❑ Page# 4 DocuSign Envelope ID:664358C3-FC03-4BCC-9CED-C10192BC1 E31 Permit: NCO066516 Owner-Facility: Terrible Creek WWTP Inspection Date: 02/21/2024 Inspection Type: Compliance Evaluation Aeration Basins Yes No NA NE 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/I) 0 ❑ ❑ ❑ Comment: BNR unit#2 was offlne due to problems with the mixers, blades and moutning assemblies. Reparis scheduled to begin week of fEb 26,. 2024. Simlare issuse are present with the in use BNR unit#1. Facility is work through repairs under warrentee with manurfacture. - requested a wirtten follow up to be provided to us by Town in CEI letter. Secondary Clarifier Yes No NA NE Is the clarifier free of black and odorous wastewater? 0 ❑ ❑ ❑ 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? 0 ❑ ❑ ❑ Is the site free of evidence of short-circuiting? 0 ❑ ❑ ❑ Is scum removal adequate? M ❑ ❑ ❑ Is the site free of excessive floating sludge? 0 ❑ ❑ ❑ Is the drive unit operational? 0 ❑ ❑ ❑ Is the return rate acceptable (low turbulence)? 0 ❑ ❑ ❑ Is the overflow clear of excessive solids/pin floc? 0 ❑ ❑ ❑ Is the sludge blanket level acceptable? (Approximately '/4 of the sidewall depth) 0 ❑ ❑ ❑ Comment: One of two clarifers was out of service due to issues with the plate in the center column. Written response detialing the repair status is requested from town by CEI letter. Pumps-RAS-WAS Yes No NA NE Are pumps in place? 0 ❑ ❑ ❑ Are pumps operational? 0 ❑ ❑ ❑ Are there adequate spare parts and supplies on site? ❑ ❑ ❑ Comment: Filtration (High Rate Tertiary) Yes No NA NE Type of operation: Is the filter media present? ❑ ❑ ❑ Is the filter surface free of clogging? ❑ ❑ ❑ ■ Page# 5 DocuSign Envelope ID:664358C3-FC03-4BCC-9CED-C10192BC1 E31 Permit: NCO066516 Owner-Facility: Terrible Creek WWTP Inspection Date: 02/21/2024 Inspection Type: Compliance Evaluation Filtration (High Rate Tertiary) Yes No NA NE Is the filter free of growth? ❑ ❑ ❑ Is the air scour operational? 0 ❑ ❑ ❑ Is the scouring acceptable? ❑ ❑ 0 ❑ Is the clear well free of excessive solids and filter media? 0 ❑ ❑ ❑ Comment: Disinfection - UV Yes No NA NE Are extra UV bulbs available on site? 0 ❑ ❑ ❑ Are UV bulbs clean? 0 ❑ ❑ ❑ Is UV intensity adequate? ■ ❑ ❑ ❑ Is transmittance at or above designed level? ❑ ❑ ❑ ■ Is there a backup system on site? 0 ❑ ❑ ❑ Is effluent clear and free of solids? 0 ❑ ❑ ❑ Comment: Aerobic Digester Yes No NA NE Is the capacity adequate? ■ ❑ ❑ ❑ Is the mixing adequate? ❑ ❑ ❑ ■ Is the site free of excessive foaming in the tank? 0 ❑ ❑ ❑ # Is the odor acceptable? 0 ❑ ❑ ❑ # Is tankage available for properly waste sludge? 0 ❑ ❑ ❑ Comment: Influent Sampling Yes No NA NE # Is composite sampling flow proportional? ❑ ❑ 0 ❑ Is sample collected above side streams? ❑ ❑ ❑ Is proper volume collected? ■ ❑ ❑ ❑ Is the tubing clean? 0 ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 0 ❑ ❑ ❑ degrees Celsius)? Is sampling performed according to the permit? 0 ❑ ❑ ❑ Comment: Page# 6 DocuSign Envelope ID:664358C3-FC03-4BCC-9CED-C10192BC1 E31 Permit: NCO066516 Owner-Facility: Terrible Creek WWTP Inspection Date: 02/21/2024 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? ■ ❑ ❑ ❑ Is the tubing clean? M ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 0 ❑ ❑ ❑ degrees Celsius)? Is the facility sampling performed as required by the permit (frequency, sampling type ❑ ❑ ❑ representative)? Comment: Upstream / Downstream Sampling Yes No NA NE Is the facility sampling performed as required by the permit (frequency, sampling type, 0 ❑ ❑ ❑ and sampling location)? Comment: using coalition monitoring Standby Power Yes No NA NE Is automatically activated standby power available? 0 ❑ ❑ ❑ Is the generator tested by interrupting primary power source? 0 ❑ ❑ ❑ 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? 0 ❑ ❑ ❑ Is there an emergency agreement with a fuel vendor for extended run on back-up ■ ❑ ❑ ❑ power? Is the generator fuel level monitored? ■ ❑ ❑ ❑ Comment: Flow Measurement - Effluent Yes No NA NE # Is flow meter used for reporting? 0 ❑ ❑ ❑ Is flow meter calibrated annually? 0 ❑ ❑ ❑ Is the flow meter operational? 0 ❑ ❑ ❑ (If units are separated) Does the chart recorder match the flow meter? ❑ ❑ ❑ Comment: Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? 0 ❑ ❑ ❑ Page# 7 DocuSign Envelope ID:664358C3-FC03-4BCC-9CED-C10192BC1 E31 Permit: NCO066516 Owner-Facility: Terrible Creek WWTP Inspection Date: 02/21/2024 Inspection Type: Compliance Evaluation Effluent Pipe Yes No NA NE 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: Solids Handling Equipment Yes No NA NE Is the equipment operational? ■ ❑ ❑ ❑ 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? ■ ❑ ❑ ❑ 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? ■ ❑ ❑ ❑ The facility has an approved sludge management plan? ❑ ❑ ❑ ■ Comment: Chemical Feed Yes No NA NE Is containment adequate? ■ ❑ ❑ ❑ Is storage adequate? ■ ❑ ❑ ❑ Are backup pumps available? ❑ ❑ ❑ ■ Is the site free of excessive leaking? ■ ❑ ❑ ❑ 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 ■ Page# 8 DocuSign Envelope ID:664358C3-FC03-4BCC-9CED-C10192BC1 E31 Permit: NCO066516 Owner-Facility: Terrible Creek WWTP Inspection Date: 02/21/2024 Inspection Type: Compliance Evaluation Record Keeping Yes No NA NE 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? ■ ❑ ❑ ❑ 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: 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? ❑ ❑ ■ ❑ Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees? ❑ ❑ ■ ❑ Comment: Page# 9