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Home My WebLink AboutNC0023884_Compliance Evaluation Inspection_20180629United 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 I 2 15 I 3 I NCO023884 111 12 I 18/06/21 I17 18 I S i 19 LG] i 201 I 211111 1 1 1 1 1 111 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 111 1 1 1 1 1 166 Inspection Work Days Facility Self-Monitoring Evaluation Rating 131 QA ----------------------Reserved------------------- 67 70I�_71 I 72 Lr] 73I i74 751 I I I 1 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 oermit Number) 10:10AM 18/06/21 14/12/01 City of Salisbury WWTP 1915 Grubb Ferry Rd Exit Time/Date Permit Expiration Date Salisbury NC 281444261 01:48PM 18/06/21 19/06/30 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Sonja Basinger,1915 Grubb Ferry Rd Salisbury NC 281444261/Env. Services Manager/704-638-5375/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Permit Flow Measurement Operations & Maintenance Records/Reports Self-Monitoring Program Sludge Handling Disposal Facility Site Review 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 DocuSigned by: Roberto Scheller MRO WQ//252-946-6481/ 6/27/2018 C)91C2A007838943E DocuSigned by: Date Signature of Management Q A Reviewer Agency/Office/Phone and Fax Num7sA*-. W. Corey Basinger MRO WQ//704-235-2194/ for � HP44"t4 6/29/18 1`161 FB69AMUA3... EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# NPDES yr/mo/day Inspection Type NCO023884 111 121 18/06/21 1 17 18 JCJ Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Page# Permit: NCO023884 Owner - Facility: City of Salisbury WWTP Inspection Date: 06/21/2018 Inspection Type: Compliance Evaluation Yes No NA NE Are records kept and maintained as required by the permit? 0 ❑ Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new ❑ ❑ 0 ❑ application? 0 ❑ ❑ ❑ 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: Current permit is for the discharge of 7.5 MGD Grant Creek WWTP and 5.0 MGD Town Creek WWTP combined effluent discharge. Current permit expires on June 30, 2019. Record Keeping Yes No NA NE Are records kept and maintained as required by the permit? 0 ❑ ❑ ❑ Is all required information readily available, complete and current? 0 ❑ ❑ ❑ Are all records maintained for 3 years (lab. reg. required 5 years)? 0 ❑ ❑ ❑ Are analytical results consistent with data reported on DMRs? 0 ❑ ❑ ❑ 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 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: Records reviewed were current and readily available for review. Operations & Maintenance Yes No NA NE Is the plant generally clean with acceptable housekeeping? 0 ❑ ❑ ❑ Page# 3 Permit: NCO023884 Owner - Facility: City of Salisbury WWTP Inspection Date: 06/21/2018 Inspection Type: Compliance Evaluation Operations & Maintenance Yes No NA NE Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable ❑ ❑ ❑ Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: Operation log sheets were reviewed and noted during rain events facility is dealing with I&I from collection system. 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)? 0 ❑ ❑ ❑ 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: Grant Creek WWTP Lab. Cert. # 112 and Research Analytical Lab. Cert. # 34 Bar Screens Yes No NA NE Type of bar screen NA NE Type of grit removal a.Manual ❑ a.Manual ❑ b.Mechanical 0 b.Mechanical 0 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: Grit Removal Yes No NA NE Type of grit removal a.Manual ❑ b.Mechanical 0 Is the grit free of excessive organic matter? 0 ❑ ❑ ❑ Is the grit free of excessive odor? 0 ❑ ❑ ❑ # Is disposal of grit in compliance? 0 ❑ ❑ ❑ Comment: Page# 4 Permit: NCO023884 Owner - Facility: City of Salisbury WWTP Inspection Date: 06/21/2018 Inspection Type: Compliance Evaluation Yes No NA NE Is the pump wet well free of bypass lines or structures? ❑ ❑ Influent Sampling Yes No NA NE # Is composite sampling flow proportional? 0 ❑ ❑ ❑ Is sample collected above side streams? 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)? 0 ❑ ❑ ❑ Is sampling performed according to the permit? 0 ❑ ❑ ❑ Comment: At time of inspection influent sampler was noted at 2.0 degrees Celsius. 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? 0 ❑ ❑ ❑ Is SCADA telemetry available and operational? 0 ❑ ❑ ❑ Is audible and visual alarm available and operational? 0 ❑ ❑ ❑ Comment: Primary 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? 0 ❑ ❑ ❑ Is the site free of excessive floating sludge? 0 ❑ ❑ ❑ Is the drive unit operational? 0 ❑ ❑ ❑ Is the sludge blanket level acceptable? ❑ ❑ ❑ 0 Is the sludge blanket level acceptable? (Approximately'/ of the sidewall depth) ❑ ❑ ❑ ❑ Comment: 2 of 4 primary clarifiers in operation Trickling Filter Yes No NA NE Is the filter free of ponding? ❑ ❑ 0 ❑ Page# 5 Permit: NCO023884 Owner - Facility: City of Salisbury WWTP Mode of operation Ext. Air ❑ Inspection Date: 06/21/2018 Inspection Type: Compliance Evaluation Surface ■ ❑ Trickling Filter Yes No NA NE Is the filter free of leaks at the center column of filter's distribution arms? ❑ ❑ 0 ❑ Is the distribution of flow even from the distribution arms? ❑ ❑ 0 ❑ Is the filter free of uneven or discolored growth? ❑ ❑ 0 ❑ Is the filter free of sloughing of excessive growth? ❑ ❑ 0 ❑ Are the filter's distribution arms orifices free of clogging? ❑ ❑ 0 ❑ Is the filter free of excessive filter flies, worms or snails? ❑ ❑ 0 ❑ Comment: Two trickling filters not in operation. Aeration Basins Yes No NA NE Mode of operation Ext. Air ❑ ❑ Type of aeration system Surface ■ ❑ Is the basin free of dead spots? 0 ❑ ❑ ❑ Are surface aerators and mixers operational? E ❑ ❑ ❑ Are the diffusers operational? ❑ ❑ 0 ❑ 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/1) ❑ ❑ ❑ 0 Comment: Operator noted that foam on aeration basin is due to an industry discharge of surfactant to WWTP. 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 1/4 of the sidewall depth) Yes No NA NE ■ ❑ ❑ ❑ ❑ ❑ ■ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ❑ ■ Page# 6 Permit: NC0023884 Inspection Date: 06/21/2018 Secondary Clarifier Owner - Facility: City of Salisbury WWTP Inspection Type: Compliance Evaluation Comment: Effluent from secondary clarifiers was clear with few visible suspended solids. Pumps -RAS -WAS Are pumps in place? Are pumps operational? Are there adequate spare parts and supplies on site? Comment: Facility has 2 sets of screw lift pumps. 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? Yes No NA NE Yes No NA NE ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ❑ ■ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Comment: Effluent from Grant Creek WWTP and Town Creek WWTP are combined for discharge at effluent structure. Pump Station - Effluent Yes No NA NE Is the pump wet well free of bypass lines or structures? 0 ❑ ❑ ❑ Are all pumps present? 0 ❑ ❑ ❑ Are all pumps operable? 0 ❑ ❑ ❑ Are float controls operable? 0 ❑ ❑ ❑ Is SCADA telemetry available and operational? 0 ❑ ❑ ❑ Is audible and visual alarm available and operational? 0 ❑ ❑ ❑ Comment: De -chlorination Yes No NA NE Type of system ? Liquid Is the feed ratio proportional to chlorine amount (1 to 1)? ❑ ❑ ❑ 0 Is storage appropriate for cylinders? 0 ❑ ❑ ❑ # Is de -chlorination substance stored away from chlorine containers? 0 ❑ ❑ ❑ Are the tablets the proper size and type? ❑ ❑ 0 ❑ Page# 7 Permit: NCO023884 Owner - Facility: City of Salisbury WWTP Inspection Date: 06/21/2018 Inspection Type: Compliance Evaluation De -chlorination Yes No NA NE Comment: Effluent structure is equiped with de -chlorination, 4 foot Parshall flume and flow meter, effluent sampler, UV system not in use, standby generator, cascade post aerator, and effluent flow diffuser located in the Yadkin River. Are tablet de -chlorinators operational? ❑ ❑ ❑ Number of tubes in use? Comment: Effluent Sampling Yes No NA NE Is composite sampling flow proportional? 0 ❑ ❑ ❑ Is sample collected below all treatment units? M ❑ ❑ ❑ 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)? ❑ ❑ 0 ❑ Is the facility sampling performed as required by the permit (frequency, sampling type 0 ❑ ❑ ❑ representative)? Comment: At time of inspection effluent sampler was noted at 1.4 degrees Celsius. Disinfection - UV Yes No NA NE Are extra UV bulbs available on site? ❑ ❑ 0 ❑ Are UV bulbs clean? ❑ ❑ 0 ❑ Is UV intensity adequate? ❑ ❑ 0 ❑ Is transmittance at or above designed level? ❑ ❑ 0 ❑ Is there a backup system on site? ❑ ❑ 0 ❑ Is effluent clear and free of solids? ❑ ❑ 0 ❑ Comment: UV not in use. 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? ❑ ❑ ❑ 0 If effluent (diffuser pipes are required) are they operating properly? ❑ ❑ ❑ 0 Comment: Aerobic Digester Yes No NA NE Is the capacity adequate? 0 ❑ ❑ ❑ Page# 8 Permit: NCO023884 Inspection Date: 06/21/2018 Aerobic Digester Owner - Facility: City of Salisbury WWTP Inspection Type: Compliance Evaluation Yes No NA NE 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: Bio-soilds are moved through digesters for volatile reduction and pumped up to belt filter press to dewater. Solids are land applied under Water Qualtiy permit #WQ001956. 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? Is the site free of excessive moisture in belt filter press sludge cake? The facility has an approved sludge management plan? Comment: Belt filter press was in operation at time of inspection. 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: Yes No NA NE ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Page# 9