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Home My WebLink AboutNC0071528_Compliance Evaluation Inspection_20200730United 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 NCO071528 I11 121 20/07/23 I17 18I � I 19 I s I 201 I 211IIIII 111111III II III III1 I I IIIII IIIIIIIII II r6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---------------------- Reserved ------------------- 67 2.0 701d I 71 I„ I 72 I r., I 71 I 74 79 I I I I I I I80 L-I ty L-1 I I 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 permit Number) 10:55AM 20/07/23 15/05/01 Lake Norman Woods WWTP Marina Ln Exit Time/Date Permit Expiration Date Sherrills Ford NC 28673 12:05PM 20/07/23 20/04/30 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Dennis W Murdock/ORC/828-238-4659/ Robert Charles White//336-549-8990 / Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Dale H Norman,PO Box 321 Sherrills Ford NC 28673//828-478-3179/ 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 Wes Bell Docusigned by: DWR/MRO WQ/704-663-1699 Ext.2192/ 7/29/2020 2�r.& A61696D90CC3437... R8fi1'drA` &fewer Agency/Office/Phone and Fax Numbers Date Signature of Macrg�F16,FBHAMUAI.. And Pitn*,* .cw H P R/MRO WQ/704-663-1699 Ext.2180/ 7. 30.2020 EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# NPDES yr/mo/day Inspection Type NCO071528 I11 12I 20/07/23 117 18 i c i Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Page# Permit: NCO071528 Owner -Facility: Lake Norman Woods WWTP Inspection Date: 07/23/2020 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 0 ❑ ❑ ❑ application? Is the facility as described in the permit? 0 ❑ ❑ ❑ # Are there any special conditions for the permit? ❑ ❑ 0 ❑ Is access to the plant site restricted to the general public? 0 ❑ ❑ ❑ Is the inspector granted access to all areas for inspection? 0 ❑ ❑ ❑ Comment: The Division received the permit renewal package on 12/11/19. The last compliance evaluation inspection at the facility was performed by DWR staff on 11MOr-110 Record Keeping 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 operatc 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ ■ • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ■ ❑ Comment: The records reviewed during the inspection were organized and well maintained. Discharge Monitoring Reports (eDMRs) were reviewed for the period June 2019 through May 2020. No effluent limit violations were reported and all monitorina freauencies were correct. Page# 3 Permit: NCO071528 Owner -Facility: Lake Norman Woods WWTP Inspection Date: 07/23/2020 Inspection Type: Compliance Evaluation Laboratory Yes No NA NE Are field parameters performed by certified personnel or laboratory? 0 ❑ ❑ ❑ Are all other parameters(excluding field parameters) performed by a certified lab? 0 ❑ ❑ ❑ # Is the facility using a contract lab? 0 ❑ ❑ ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees ❑ ❑ 0 ❑ Celsius)? Incubator (Fecal Coliform) set to 44.5 degrees Celsius+/- 0.2 degrees? ❑ ❑ 0 ❑ Incubator (BOD) set to 20.0 degrees Celsius +/- 1.0 degrees? ❑ ❑ 0 ❑ Comment: On -site field analvses (dissolved oxvaen. DH. temDerature. total residual chlorine) are performed under Envirolink's field laboratory certification #5212. Statesville Analytical (Certification #440) has also been contracted to provide analytical support. The ORC must ensure to perform post -analysis calibration checks on the dissolved oxygen meter, pH meter and total residual chlorine meter (if no mid -range checks are performed at each site) if these field analyses are performed at multiple sites throughout a day. Post -analysis calibration checks must be performed in accordance with the NC Wastewater/Groundwater laboratory certification approved procedures for the analyses of dissolved oxygen, PH and total residual chlorine. Effluent Sampling Yes No NA NE Is composite sampling flow proportional? ❑ ❑ 0 ❑ Is sample collected below all treatment units? 0 ❑ ❑ ❑ Is proper volume collected? 0 ❑ ❑ ❑ Is the tubing clean? ❑ ❑ 0 ❑ # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees ❑ ❑ 0 ❑ Celsius)? Is the facility sampling performed as required by the permit (frequency, sampling type 0 ❑ ❑ ❑ representative)? Comment: The subject permit requires effluent grab samples 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: Overall, the wastewater treatment facility appeared to be properly operated and well maintained. Process control measurements were being performed and documented. Although significant improvements have been initiated at this facility, a few maintenance concerns were noted during the inspection and are discussed further in the Aeration Basin and Secondary Clarifier Sections. Please be advised that the subject permit requires the permittee to properly operate and maintain the facility at all times [Permit Condition Reference: Part II, Section C(2) Proper Operation and Maintenancel. Page# 4 Permit: NC0071528 Owner -Facility: Lake Norman Woods WWTP Inspection Date: 07/23/2020 Inspection Type: Compliance Evaluation 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? 0 ❑ ❑ ❑ Is disposal of screening in compliance? 0 ❑ ❑ ❑ Is the unit in good condition? 0 ❑ ❑ ❑ Comment: The facility is equipped with a coarse bar screen. Equalization Basins Yes No NA NE Is the basin aerated? 0 ❑ ❑ ❑ Is the basin free of bypass lines or structures to the natural environment? 0 ❑ ❑ ❑ Is the basin free of excessive grease? 0 ❑ ❑ ❑ Are all pumps present? 0 ❑ ❑ ❑ Are all pumps operable? 0 ❑ ❑ ❑ Are float controls operable? 0 ❑ ❑ ❑ Are audible and visual alarms operable? 0 ❑ ❑ ❑ # Is basin size/volume adequate? 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? ❑ ❑ 0 ❑ Comment: Instantaneous flows are measured by multiplying the pump run time by the pump flow rate (17 qpm). The pumps are located in the equalization tank. 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? ❑ ❑ 0 ❑ Are the diffusers operational? 0 ❑ ❑ ❑ Page# 5 Permit: NCO071528 Owner -Facility: Lake Norman Woods WWTP Inspection Date: 07/23/2020 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: Lime is added on an as -needed basis. The settleabilitv test (twentv minutes) was measured at 550 ml/L with a clear supernate during the inspection. Although the mixed liquor appeared to be adequately oxygenated, two of the diffusers in the aeration basin appeared to have either blown diffusers or the end caps had come off. The diffusers must be checked and repaired to ensure proper operation. 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)? Is the overflow clear of excessive solids/pin floc? Is the sludge blanket level acceptable? (Approximately'/ of the sidewall depth) Yes No NA NE ■ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ■ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ■ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ Comment: The clarifier weirs were rusted and deteriorated and not level. A newer section of weir was on -site but had not been installed. The new section of weir must be installed within the near future. The clarifier sludge blanket is dispersed throughout the entire clarifier during each start-up o the blower/motor units. The Permittee and staff should implement the appropriate corrective actions to prevent this condition from occurring in the clarifier. Disinfection -Tablet Are tablet chlorinators operational? Are the tablets the proper size and type? Number of tubes in use? 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? Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ 1 • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Page# 6 Permit: NC0071528 Inspection Date: 07/23/2020 Disinfection -Tablet Owner -Facility: Lake Norman Woods WWTP Inspection Type: Compliance Evaluation Comment: Calcium hypochlorite is used for disinfection. De -chlorination Type of system ? Is the feed ratio proportional to chlorine amount (1 to 1)? Is storage appropriate for cylinders? # Is de -chlorination substance stored away from chlorine containers? Comment: Are the tablets the proper size and type? Are tablet de -chlorinators operational? Number of tubes in use? Comment: Sodium Sulfite is used for dechlorination. Yes No NA NE Yes No NA NE Tablet ❑ ❑ ❑ ❑ ❑ ❑ VA Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? ❑ ❑ 0 ❑ Are the receiving water free of foam other than trace amounts and other debris? ❑ ❑ ❑ If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ 0 ❑ Comment: The dechlorinated wastewater flows into a post aeration tank prior to discharge into the Catawba River (via submerged outfall). The effluent aDDeared clear with no floatable solids or foam. Aerobic Digester Yes No NA NE Is the capacity adequate? 0 ❑ ❑ ❑ Is the mixing adequate? 0 ❑ ❑ ❑ 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: Lentz Septic Tank Service removes wastewater sludge on an as -needed basis. Standby Power Yes No NA NE Is automatically activated standby power available? 0 ❑ ❑ ❑ Is the generator tested by interrupting primary power source? ❑ ❑ ❑ Is the generator tested under load? ❑ ❑ ❑ Was generator tested & operational during the inspection? 0 ❑ ❑ ❑ Page# 7 Permit: NCO071528 Owner -Facility: Lake Norman Woods WWTP Inspection Date: 07/23/2020 Inspection Type: Compliance Evaluation Standby Power Yes No NA NE 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? 0 ❑ ❑ ❑ Is the generator fuel level monitored? 0 ❑ ❑ ❑ Comment: The facility is equipped with a propane fueled back-up generator. The Permittee and staff should develop and implement a testing schedule on the generator and document all testing events and maintenance activities. In addition, the Permittee should provide a copy of the generator's operation manual to the ORC and staff. Page# 8