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HomeMy WebLinkAboutNC0060623_Compliance Evaluation Inspection_20210518 (2)United States Environmental Protection Agency E PA 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 1 IN I 21IIIIII Code NPDES yr/mo/day Inspection 2 IL I 3 I NC0060623 111 121 21/05/12 117 Type 1810I IIIIIIIIIII Inspector Fac Type 19I S I 2011 IIIIIIIIIIIIIIIIII I IIIIII P6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA Reserved 671 I 70I I 711 172 I N I 73I 1 74 71 I I I I I I I I 180 Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES Dermit Number) Stone Highway Mobile Home Park 311 Pinewood PI Eden NC 27288 Entry Time/Date 05:35PM 21/05/12 Permit Effective Date 17/06/01 Exit Time/Date 06:25PM 21/05/12 Permit Expiration Date 22/04/30 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// William H Young/ORC/336-627-1009/ Other Facility Data Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Sterling A Weaver,149 Sunset Blvd Beaufort SC 29902//843-522-8882/8435228882 No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenar Records/Reports Self -Monitoring Progran Sludge Handling DispoFacility Site Review 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 Alex Lowe DWR/WSRO WQ/336-776-9689/ Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date DocuSigned by: 3eAuuten, �ti niLK 5/18/2021 0D2D3CE3F1B7456_. EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# 1 31 NPDES yr/mo/day NC0060623 111 121 21/05/12 117 Inspection Type 18 [j (Cont.) 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) On May 12th, 2021, Alex Lowe of the WSRO conducted a routine Compliance Evaluation Inspection at Stone Highway Mobile Home Park WWTP (NPDES permit no. NC0060623). ORC William "Hal" Young was present throughout. The plant area was well cared for, with clean, trimmed grounds around the basins. Within the treatment train, there were signs of aging and corrosion on some of the exposed metals. Lowe noted one corroded beam connected to the bar screen and suggested to Young that he monitor corrosion and begin repairs if signs of weakening occur. The aeration basin was operating well, with no visible dead spots, and no excessive or discolored foaming. The clarifier was free from bad odors and appeared to be keeping most solids out of the disinfection stream. ORC Young did note that he has had some issues since mid -spring 2021 with small bits of sheared grease, which float on the surface of the clarifiers and occasionally make it into the overflow. However, he works to manually remove these bits of solids with a home-made tool when he is on site, and secures the filter below the clarifier outfall when he is gone to catch any extra pieces that may make it below. During the visit, Lowe did not observe any of these pieces in the effluent stream or below the outfall. The effluent outfall was easily accessible, and very little foaming was observed in the receiving waters. Effluent was clear, and free from solids and floc. A review of three months of DMR data found one discrepancy, with a misreported TSS number on the 14th of January, 2021. This discrepancy appeared to be an honest mistake, as the reported number was not the lab result, but the lab reporting limit, which is listed directly beside the lab result on the Meritech, Inc. analysis sheet. Lowe advised ORC Young to revise and resubmit the DMR in question, and the mistake was remedied immediately. ORC demonstrated good engagement with treatment difficulties and site maintenance, and effluent continues to be compliant with permit requirements. Page# 2 Permit: NC0060623 Inspection Date: 05/12/2021 Owner - Facility: Stone Highway Mobile Home Park 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 El El • ❑ application? Is the facility as described in the permit? • El El El # Are there any special conditions for the permit? El • El El Is access to the plant site restricted to the general public? • ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? • El El El Comment: Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? • El El El Is all required information readily available, complete and current? • El ❑ ❑ Are all records maintained for 3 years (lab. reg. required 5 years)? • El El El Are analytical results consistent with data reported on DMRs? • El El El Is the chain -of -custody complete? • El El El 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? • El ❑ ❑ Has the facility submitted its annual compliance report to users and DWQ? El El • El (If the facility is = or > 5 MGD permitted flow) Do they operate 24/7 with a certified ❑ El • ❑ operator on each shift? Is the ORC visitation log available and current? • El El El Is the ORC certified at grade equal to or higher than the facility classification? • El ❑ ❑ 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: Operations & Maintenance Is the plant generally clean with acceptable housekeeping? Yes No NA NE Page# 3 Permit: NC0060623 Inspection Date: 05/12/2021 Owner - Facility: Stone Highway Mobile Home Park Inspection Type: Compliance Evaluation Operations & Maintenance Yes No NA NE Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable ❑ El El Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: DO, temperature, and Settleable Solids collected and used in process control Bar Screens Yes No NA NE Type of bar screen a.Manual • b.Mechanical ❑ Are the bars adequately screening debris? • El El El Is the screen free of excessive debris? • ❑ ❑ ❑ Is disposal of screening in compliance? • El El El Is the unit in good condition? • El El El Comment: Beams holding bar screen showing some signs of rust and corrosion. Lowe pointed this out to ORC Young as something to check on periodically. Aeration Basins Yes No NA NE Mode of operation Ext. Air Type of aeration system Diffused Is the basin free of dead spots? • El El El Are surface aerators and mixers operational? ❑ ❑ • El Are the diffusers operational? • El El El Is the foam the proper color for the treatment process? • ❑ El El Does the foam cover less than 25% of the basin's surface? • El El El Is the DO level acceptable? El El El • Is the DO level acceptable?(1.0 to 3.0 mg/I) El El El • Comment: Basin wasted 3-4 times per week. 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? Yes No NA NE • ❑ ❑ ❑ Page# 4 Permit: NC0060623 Inspection Date: 05/12/2021 Owner - Facility: Stone Highway Mobile Home Park Inspection Type: Compliance Evaluation Secondary Clarifier Yes No NA NE 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'/4 of the sidewall depth) • ❑ ❑ ❑ ▪ ❑ ❑ ❑ Comment: ORC Young noted a problem he is having with small, coagulated balls of grease (approx. pea sized or smaller) making it over the weirs, as they float at surface level and make it into the overflow. Young stated that he manually removes as many as possible during his site visit, and he has devised a post -clarifier filter out of a stainless steel colander, which sits just after the clarifier and collects the rest. None of these grease pieces were observed in the effluent stream during the course of the visit. Disinfection -Tablet Yes No NA NE Are tablet chlorinators operational? • ❑ ❑ ❑ Are the tablets the proper size and type? • ❑ El El Number of tubes in use? 2 Is the level of chlorine residual acceptable? • El ❑ ❑ Is the contact chamber free of growth, or sludge buildup? • ❑ El El Is there chlorine residual prior to de -chlorination? • ❑ ❑ ❑ Comment: Two tues in use, with two others maintained and availabe for use in case of increased disinfection needs. De -chlorination Yes No NA NE Type of system ? Tablet Is the feed ratio proportional to chlorine amount (1 to 1)? • ❑ ❑ ❑ Is storage appropriate for cylinders? El El • El # Is de -chlorination substance stored away from chlorine containers? • El El El Are the tablets the proper size and type? • El El El Comment: Sodium metabisulfite tablets Are tablet de -chlorinators operational? • El El El Number of tubes in use? 4 Comment: Effluent Pipe Is right of way to the outfall properly maintained? • Yes No NA NE ❑ ❑ ❑ Page# 5 Permit: NC0060623 Inspection Date: 05/12/2021 Owner - Facility: Stone Highway Mobile Home Park Inspection Type: Compliance Evaluation Effluent Pipe Are the receiving water free of foam other than trace amounts and other debris? If effluent (diffuser pipes are required) are they operating properly? Yes No NA NE • ❑ ❑ ❑ Comment: Some trace foamign directly below outfall, but no foam persisted more than 10-15 ft downstream. 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: Upstream / Downstream Sampling Is the facility sampling performed as required by the permit (frequency, sampling type, and sampling location)? Comment: Taken once weekly, per permit requirements. Yes No NA NE Page# 6