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HomeMy WebLinkAboutNC0025348_New Bern WWTP Inspection_20210524May 24, 2021 Walter B Hartman City of New Bern PO Box 1129 New Bern, NC 28563-1129 SUBJECT: Compliance Inspection Report New Bern WWTP NPDES WW Permit No. NC0025348 Craven County Dear Mr. Hartman: The North Carolina Division of Water Resources conducted an inspection of the New Bern WWTP on 5/11/2021. This inspection was conducted to verify that the facility is operating in compliance with the conditions and limitations specified in NPDES WW Permit No. NC0025348. The findings and comments noted during this inspection are provided in the enclosed copy of the inspection report entitled "Compliance Inspection Report". There were no significant issues or findings noted during the inspection and therefore, a response to this inspection report is not required. If you should have any questions, please do not hesitate to contact Paul Mays with the Water Quality Regional Operations Section in the Washington Regional Office at 252-948-3940 or via email at paul.mays@ncdenr.gov. ATTACHMENTS Cc: Laserfiche �. : Sincerely, P MaLS Paul Mays, Environmental Specialist 1 Water Quality Regional Operations Section Washington Regional Office Division of Water Resources, NCDEQ „� :a United States Environmental Protection Agency EPA 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 1 Iti 1 2 I5 I 3 I NC0025348 111 121 21/05/11 I17 Type 18 L 11111111111 Inspector Fac Type 19I S I 2011 21111111 111111111111111111 1111111 r6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved 671I 70I I 711751 I 72 I N I 731 1 1741 I I I I I I I80 Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES oermit Number) New Bern WWTP 307 Glenbumie Dr New Bern NC 28560 Entry Time/Date 10:OOAM 21/O5/11 Permit Effective Date 13/12/01 Exit Time/Date 12:OOPM 21/05/11 Permit Expiration Date P 18/06/30 Name(s) of Onsite Representative(s)/Ttles(s)/Phone and Fax Number(s) Tony Randall Hawkins/ORC/252-639-7556/ Other Facility Data Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Walter B Hartman,PO Box 1129 New Bern NC 285631129/City Manager/252-636-4014/2526361848 No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenar Records/Reports Sludge Handling Dispo: Facility Site Review • Effluent/Receiving Wate Laboratory Section ID: 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 Paul M Mays DWR/WARO WQ/252-948-3940/ 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 NPDES yr/mo/day Inspection Type 3I NC0025348 111 121 21/05/11 117 181,.1 (Cont.) 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) On 05/11/2021 Paul Mays with the Division of Water Resources from the Washington Regional Office conducted a compliance evaluation of New Bern WWTP. The facility was found to be compliant with permit #NC0025348. Below are the findings and observations found during the inspection: The facility was well kept. All equipment was in good shape and operational. 10/2020 DMR and corresponding lab data was spot checked, and no discrepancies were found. The 2020 annual report was submitted, and the 2019 annual report was on hand. Operation and maintenance logs were also present and complete. All other required documents were readily available for review and well maintained. Staff assisted with retrieving data from lab reports to compare with what was reported on eDMR report. Influent flowmeter was calibrated on 04/27/2021 Influent sampler is flow proportional and obtains 450m1 samples. The temperature was set to 5 degrees Celsius. Debris goes to a lined landfill three times a week on Monday, Wednesday, and Friday. Grit goes to a lined landfill three times a week on Monday, Wednesday, and Friday. Both clarifiers were in good working condition and effluent leaving them looked good. However, there were some grease particles present. Clarifier 1 had a 1.5ft sludge blanket and clarifier 2 had a 2.25ft sludge blanket. This was determined via sludge judge. The generators are tested weekly, and the facility has a monthly checklist for maintenance. The fuel tank for the generators were around 70% full. Tertiary filters 2 backwashes a day at 11am and 3pm respectfully. The high-water alarms for the tertiary filters were operational and function through SCADA. Effluent flowmeter was calibrated on 04/27/2021 Effluent sampler is flow proportional and samples are 450m1 per sample. The temperature was set to 5 degrees Celsius. Sludge press was in good working condition and was operating at the time of inspection. Page# 2 Permit: NC0025348 Owner - Facility: New Bern WWTP Inspection Date: 05/11/2021 Inspection Type: Compliance Evaluation 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? MIDEID # Are there any special conditions for the permit? MOOD Is access to the plant site restricted to the general public? ■ ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? � ❑ ❑ ❑ 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 MOOD Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? • DOE Is all required information readily available, complete and current? • ❑ ❑ ❑ Are all records maintained for 3 years (lab. reg. required 5 years)? MEDD 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 MODE operator on each shift? Is the ORC visitation log available and current? MOLD 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? Page# 3 Permit: NC0025348 Owner - Facility: New Bern W WTP Inspection Date: 05/11/2021 Inspection Type: Compliance Evaluation Record Keeping Is a copy of the current NPDES permit available on site? Facility has copy of previous year's Annual Report on file for review? Yes No NA NE ▪ ❑ ❑ ❑ Comment: 10/2020 DMR and corresponding lab data was spot checked, and no discrepancies were found. The 2020 annual report was submitted, and the 2019 annual report was on hand. Operation and maintenance logs were also present and complete. All other required documents were readily available for review and well maintained. Staff assisted with retrieving data from lab reports to compare with what was reported on eDMR report. Flow Measurement - Influent # 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: Influent flowmeter was calibrated on 04/25/2021 Influent sampler is flow proportional and obtains 450m1 samples. The temperature was set to 5 degrees Celsius. Pump Station - Influent Is the pump wet well free of bypass lines or structures? Is the wet well free of excessive grease? Are all pumps present? Are all pumps operable? Are float controls operable? Is SCADA telemetry available and operational? Is audible and visual alarm available and operational? Comment: Yes No NA NE ❑•❑ ❑ ▪ ❑ ❑ ❑ • ❑ ❑ ❑ O 0E10 Yes No NA NE • ❑ ❑ ❑ ■ ❑ ❑ ❑ ▪ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑•❑ • ❑ ❑ ❑ ❑ ❑ ❑ • Bar Screens Yes No NA NE Type of bar screen a.Manual b.Mechanical Are the bars adequately screening debris? • ❑ ❑ ❑ Is the screen free of excessive debris? • ❑ ❑ ❑ Is disposal of screening in compliance? 11000 Page# 4 Permit: NC0025348 Owner -Facility: New Bern WWTP Inspection Date: 05/11/2021 Inspection Type: Compliance Evaluation Bar Screens Is the unit in good condition? Yes No NA NE ▪ ❑ ❑ ❑ Comment: Debris from barscreen goes to a lined landfill three times a week on Monday, Wednesday and Friday. Grit Removal 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? Yes No NA NE • • • ❑ ❑ ❑ ▪ ❑ ❑ ❑ • ❑ ❑ ❑ Comment: Grit goes to a lined landfill three times a week on Monday, Wednesday and Friday. Oxidation Ditches 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/I) Are settelometer results acceptable?(400 to 800 ml/I in 30 minutes) Comment: 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? 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)? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ▪ ❑ ❑ ❑ O 0011 ❑ ❑ ❑• ❑ ❑ • ❑ ❑ ❑ ❑• Yes No NA NE ▪ ❑ ❑ ❑ ▪ ❑ ❑ ❑ ▪ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ▪ ❑ ❑ ❑ ▪ ❑ ❑ ❑ Page# 5 Permit: NC0025348 Inspection Date: 05/11/2021 Owner - Facility: New Bern W WTP Inspection Type: Compliance Evaluation Secondary Clarifier Yes No NA NE Is the overflow clear of excessive solids/pin floc? Is the sludge blanket level acceptable? (Approximately''/, of the sidewall depth) MOOD MODE Comment: Both clarifiers were in good working condition and effluent leaving them looked good. However, there were some grease particles present. Clarifier 1 had a 1.5ft sludge blanket and clarifier 2 had a 2.25ft sludge blanket. This was determined via sludge judge. Standby Power 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: The generators are tested weekly and the facility has a monthly checklist for maintenance. The fuel tank for the generators were around 70% full. Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ L ODE • ❑ ❑ ❑ ▪ ❑ ❑ ❑ • ❑ ❑ ❑ Sand Filters (Low rate) Yes No NA NE (If pumps are used) Is an audible and visible alarm Present and operational? ■ ❑ ❑ ❑ Is the distribution box level and watertight? •❑ ❑ ❑ Is sand filter free of ponding? •❑ ❑ ❑ Is the sand filter effluent re -circulated at a valid ratio? ❑ ❑ ❑ # Is the sand filter surface free of algae or excessive vegetation? •❑ ❑ ❑ # Is the sand filter effluent re -circulated at a valid ratio? (Approximately 3 to 1) ❑ ❑NI ❑ Comment: Tertiary filters 2 backwashes a day at 11am and 3pm respectfully. The high-water alarms for the tertiary filters were operational and function through SCADA. Pumps-RAS-WAS Are pumps in place? Are pumps operational? Are there adequate spare parts and supplies on site? Comment: Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ Page# 6 Permit: NC0025348 Inspection Date: 05/11/2021 Owner - Facility: New Bern wwTP Inspection Type: Compliance Evaluation Flow Measurement - Effluent # 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: Effluent sampler is flow proportional and samples are 450m1 per sample. The temperature was set to 5 degrees Celsius. Disinfection -Liquid Is there adequate reserve supply of disinfectant? (Sodium Hypochlorite) Is pump feed system operational? Is bulk storage tank containment area adequate? (free of leaks/open drains) Is the level of chlorine residual acceptable? Is the contact chamber free of growth, or sludge buildup? Is there chlorine residual prior to de -chlorination? Comment: Yes No NA NE •❑ ❑ ❑ •❑ ❑ ❑ MO ❑ ❑ ❑ ❑ ❑ Yes No NA NE •❑ ❑ ❑ • ❑ ❑ ❑ MEDD MOOD • ❑ ❑ ❑ OD ❑• De -chlorination Yes No NA NE Type of system ? Liquid Is the feed ratio proportional to chlorine amount (1 to 1)? MOOD Is storage appropriate for cylinders? MOOD # Is de -chlorination substance stored away from chlorine containers? MOOD Comment: Are the tablets the proper size and type? ❑ ❑ ❑ Are tablet de -chlorinators operational? DOME] Number of tubes in use? Comment: Solids Handling Equipment 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ OD MI ❑ ❑ ❑ MOOD Page# 7 Permit: NC0025348 Inspection Date: 05/11/2021 Owner - Facility: New Bern VO TP Inspection Type: Compliance Evaluation Solids Handling Equipment Yes No NA NE Is the site free of excessive moisture in belt filter press sludge cake? • ❑ ❑ ❑ The facility has an approved sludge management plan? ❑ ❑ ❑• Comment: Sludge press was in good working condition and was operating at the time of inspection. Page# 8