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Home My WebLink AboutNC0089176_Inspection_20160708Water Resources" ENVIRONMENTAL QUALITY July 8, 2016 Letitia Edens Hoke County 227 N Main St Raeford, NC 28376 SUBJECT: 6/21/2016 Compliance Evaluation Inspection Hoke County Hoke'County.WWTP` Permit:No: •:N00089176 Hoke County • PAT MCCRORY Governor • DONALD R. VAN DER VAART Secretary S. JAY ZIMMERMAN Director Dear Ms. Edens : Enclosed-please.find a copy of•the`Cornpliance Evaluation'Inspection•form. from the'.inspection conducted' on..6/21/2016:',The Compliance'Evaluation Inspection was conducted by Mark -Brantley, Environmental Program:Consultant, of the.Fayetteville-Regional.Office.'_:.The-facility was-found_to be in Compliance with permit NC0089176. The cooperation of Mr. Donavan Dennis; Facility ORC, and:Mr. Mike Dean,. Hoke County Utilities Department, was greatly appreciated. As a reminder, preservation of the Watersof the State can only_be achieved through consistent NPDES..Permit-compliance.,-• • Comments Facility was clean and neat in appearance at the time of the inspection. • 'The ORC logbook and operatorslog was up:to date. Please continue to make sure all maintenance activities are recorded. • Please rememberthat,an annual report is required as stated in the facility's .NPDES`permit. This. report can be done either on a calendar year basis or a fiscal year basis. Concerns Lime feed system. The Division recommends that spare parts be maintained onsite for the mixing unit in the lime slurry tank. The concern is that if the mixer is not operational then the lime slurry will form a solid and will not be able to be used in the WWTP. - Fayetteville Regional Office 225 Green Street, Suite 714, Fayetteville, North Carolina 28301-5095 Main Phone: 910-433-3300 1 Internet'. http://www.ncdenr.gov An Equal Opportunity \ Affirmative Action Employer — Made in part by Recycled Paper Ms. Edens Page 2 July 8, 2016 • Alum feed. The concern is that the alum feed system is not properly sized for Total Phosphorus removal at higher flows. It was explained during the inspection that the complete feed system (2 alum feed pumps) was being used to dose one of the batch reactors to meet the NPDES Phosphorus limit. The operations staff explained that if both batch reactors were online that they could not feed enough alum for phosphorus removal which could result in NPDES permit violations. • Bar Screen. On the day of the inspection the automatic bar screen was out of service. If you have not already done so, please evaluate the system and repair as necessary. • Alarms/SCADA. The Fayetteville Regional Office is concerned there is not enough telemetry at this facility to alert staff of problems after hours. Failure of some of the automated systems at this facility could result in a bypass or wastewater spill. If a large bypass occurs the Director of the Division of Water Resources could require 24 hour staffing to prevent further bypasses. • Actuator valves. The actuator valve on batch reactor #1 has failed and the County is working with the manufacturerto repair orreplace the valve. Please have the manufacture evaluate the valve on reactor #2 to see if it needs to be replace before it fails. Also, from a safety point of view please consider relocating these valves so the operations will not have to lean out over the water to work on them. • Blowers. The operations staff has expressed concern over the blowers (batch reactors and digesters blowers) shutting down during the hot weather periods due to the overheating of the motor oil. The Fayetteville Regional Office understands the Countyy is working with the - engineering firm and the blower manufacturerto correct the overheating problem. • UV. The air scrubber in the UV bath was not operational. Operations staff was having to clean the UV bulbs by hand which is a.labor intensive process. • Filters. Operations staff stated that filters had to be manually backwashed during the decant cycle because the flow was too low for the filters to backwash automatically. • Effluent sampler. The effluent sampler is currently not flow proportional. The facility is working with the instrumentation company to solve the problem. Ms. Edens Page 3 July 8, 2016 Please respond in writing to the Fayetteville Regional Office of the Division of Water Resources. by August 15, 2016 to the above mentioned concerns. Please refer to the enclosed inspection report for additional observations and comments: If you or your staff have any questions, please call me at 910-433-3327. cc: Donovan Dennis, ORRC Central _il-es• FayettguiIi iiii Sincerely, Mark Brantley Environmental Program Consultant Division of Water Resources Water Quality Regional Operations Section 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 Code NPDES yr/mo/day Inspection 1 i,, I 2 ILI 3 I NC0089176 • 111 121 16/06/21 I17 Type 18I I I I I I •I . Inspector Fac Type' • . • 19I I 201 21I I I I I I I I- I...I:.I I ..l ,I, .I, I I. I ,I I -.III .I .-I 1- .I I. -I I I 'I I- I 1 1.16 Inspection Work Days Facility Self-MonitloringlEvaluation Rating �nB1 ' CIA 67.172 LJ . I 70.,L_I 71ill .I Reserved" ' 73I I i I74 751 I I I 1 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 permit Number) Hoke County WWTP :. Ellis Rd Raeford NC 28376 Entry Time/Date 10:30AM 16/06/21 Permit Effective Date -• 13/02/01 .. Exit Time/Date 02:30PM.'..16/06/21 Permit -Expiration Date: ; ,.16/10/31 Names) of Onsite Representative(s)/Titles(s)/Phone and Faz-Number(s) /. .. // Donovan Dennis/ORC/910-369-4186/ Other Facility -Data ,- r Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Letitia Edens,227 N Main St Raeford NC 28376/County Manager/910-875-8751/9108757651 - - 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''; :, . - Section:b: Siimniaryof-Finding/Cominents (Attach additional §heets of narrative and'checklists:as necessary), (See attachment summary):, Name(s) and Signature(s) of Inspector(s) • Agency/Office/Phone and Fax Numbers Date Mark Brantley FRO WQ//910 433-3300 Ext:727/ "/ .. . Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers - , 7� I (i,, , Date B in a S enso ;. �FRO WQ//910-433-3300 Ext.72E EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# 1 31 NPDES NC0089176 111 121 yr/mo/day 16/06/21 Inspection Type I17 18I�J (Cont.) 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Comments •Facility was clean and neat in appearance at the time of the inspection. •The ORC logbook and operators log was up to date. Please continue to make sure all maintenance activities are recorded. •Please remember that an annual report is required as stated in the facility's NPDES permit. This report can be done either on a calendar year basis or a fiscal year basis. Concerns •Lime feed system. The Division recommends that spare parts be maintained onsite for the mixing unit in the lime slurry tank. The concern is that if the mixer is not operational then the lime slurry will form a solid and will not be able to be used in the WWTP. •Alum feed. The concern is that the alum feed system is not properly sized for Total Phosphorus removal at higher flows. It was explained during the inspection that the complete feed system (2 alum feed pumps) was being used to dose one of the batch reactors to meet the NPDES Phosphorus limit. The operations staff explained that if both batch reactors were online that they could not feed enough alum for phosphorus removal which could result in NPDES permit violations. •Bar Screen. On the day of the inspection the automatic bar screen was out of service. If you have not already done so, please evaluate the system and repair as necessary. •Alarms/SCADA. The Fayetteville Regional Office is concerned there is not enough telemetry at this facility to alert staff of problems after hours. Failure of some of the automated systems at this facility could result in a bypass or wastewater spill. If a large bypass occurs the Director of the Division of Water Resources could require 24 hour staffing to prevent further bypasses. •Actuator valves. The actuator valve on batch reactor #1 has failed and the County is working with the manufacture to repair or replace the valve. Please have the manufacture evaluate the valve on reactor #2 to see if it needs to be replace before it fails. Also, from a safety point of view please consider relocating these valves so the operations will not have to lean out over the water to work on them. •Blowers. The operations staff has expressed concern over the blowers (batch reactors and digesters blowers) shutting down during the hot weather periods due to the overheating of the motor oil. The Fayetteville Regional Office understands the County is working with the engineering firm and the blower manufacture to correct the overheating problem. oUV. The air scrubber in the UV bath was not operational. Operations staff was having to clean the UV bulbs by hand"which is a labor intensive process. •Filters. Operations staff stated that filters had to be manually backwashed during the decant cycle because the flow was too.low for the filters to backwash automatically. •Effluent sampler. The effluent sampler is currently not flow proportional. The facility is working with the instrumentation company to solve the problem. Page# 2 Permit: NC0089176 Inspection Date: 06/21/2016 Owner - Facility: Hoke County WVVTP Inspection Type: Compliance Evaluation - Operations & Maintenance Is the plant generallyclean with acceptable housekeeping? Does the facility analyze process control parameters, for ex: MLSS, MCRT, Settleable Solids, pH, DO, Sludge Judge, and other that are applicable? Comment: Permit (If the.present permit expires in 6 months or less). Has the permittee submitted a new application? • Is the facility asdescribed in the permit? # Are there any special conditions for the permit? Is access to the plant site restricted to the general public? Is the inspector granted access to all areas for inspection? CoMMent: 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 resulte•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 >, 6 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 classificatidn? Is the beakUp-oPerator certified at one grade less or greater than the facility classification? Is a copy of the current NPDES permit available on.site? Yet NO NA NE • 0 0 D Yes NO NA NE 7.- • .171 121 0 • -El 1;1 El El • 0 • 0 '0 0 , o 0 , •, Yes No NA NE • El iiodo • 0 .E1 El ,El 0 0 • • 0! ••ILP,D 0 0' "•: 1;1 P•D. Page# 3 Permit: NC0089176 Inspection Date: 06/21/2016 Owner - Facility: Hoke County \AAArrp Inspection Type: Compliance5valuation Record Keeping Facility has copy of previous year's Annual Report on file for review? Comment: Aerobic Digester Is the capacity adequate? Is the mixing, adequate? Is the site free of excessive foaming in the tank? # Is the odor acceptable? # Is tankage available for properly waste sludge? 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? Is the site free of excessive moisture in belt filter press sludge cake? The facility has an approved sludge management plan? Comment: The belt Dress was not in operation at the time of the inspection. Bar Screens 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? Is the unit in good condition? Comment: Yes No NA NE - _ In 0 • Yes No NA NE 11 El 0 El • 0 0 El 111 0 0 0 11 El 0 El 11 0 0 0 • Yes No NA NE - El CI DI 11 O El El • O El 0 111 O 0 El II O El • El•0 0 II Yes NO4NA 'NE Grit Removal Yes No NA NE Type of grit removal Page# 4 Permit: NC0089176 Owner - Facility: Hoke County WVVTP Inspection Date: 06/21/2016 ' ' Inspection Type: Complianoe Evaluation Grit Removal' - a.Manuar, b.Mechanical Is the grit free of excessive organic matter? • Is the grit free dfiexcassive odor? # Is disposal of grit in compliance? • ComMent: Yet .No' NA NE 'El El 0 0 0 Cl CI El Sequencing Batch Reactors 'Yes No NA NE Type of -Operation: Is the reactor effluentfree of solids? 121 - Does minimum:fill time correspond to the peak hour'flow rate of the'faeility? ' DAD i0 Is aeration and•Mixing cycled on and off during fill? II '0 0 cr The operator understands and can explain the process? • II E] Comment: This is a constant fill process: Nutrient Removal # Is total nitrogen removal required? # Is totalphosphorous removal required? Type r. ' *Is Chemical feed required to sustain process? Is nutrient -removal process operating properly? • Conitnent: Filtration (High Rate Tertiary) Type of operation: - Is the filter media present? Is the filter surface free of. clogging? Is the filter freaOf growth? Is the air scour operafional? Is the scouring acceptable'? Is the clear well free cif excessive solids and filter media? Comment: „ . Yes. No NA NE - 'Upflow • -,1=1 0- 111 0 0 0 - 1111 1:1 • . . 11' 0 0 D D Page# 5 Permit: NC0089176 Inspection Date: 06/21/2016 Owner - Facility: Hoke County'MNTP Inspection Type: Compliance Evaluation .Disinfection - UV Are extra UV bulbs available on site? Are UV bulbs dean? Is UV intensity adequate? Is transmittance at or above designed level? Is there a backup system on site? Is effluent clear and free of solids? Comment: There is no backup system for disinfection on site. 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 generatorfuel level monitored? Comment: Yes No NA NE ❑ '❑ ■-❑ II ❑ ❑ ❑ ,111.:.0 ❑ ❑ ▪ Cl ❑ ❑ ❑ II ❑ ❑ 11 ❑ ❑ ❑ Yes No NA NE, 11 D.D.D. ▪ ❑ ❑ ❑ ❑ ❑•1 1 ❑ ❑ ❑. ❑ 0 ❑ 1 °❑ ❑ Influent Sampling Yes No NA NE # Is composite sampling flow proportional? ❑ •❑ ,I 0 Is sample collected above side streams? • - • 0 0 . ❑ Is proper volume collected? • 0 ❑ ❑ Is the tubing clean? 11000 # Is proper temperature set for sample storage (kept at less than or equal to 6.0 degrees �._: _❑-_ 0 Celsius)? Is sampling,perforrned according to the permit? 1 ❑ 0 0 Comment:' Effluent Sampling Yes No NA NE Is composite sampling flow proportional? 0 0 ❑ 0 Is sample collected below all treatment units? • ❑ ❑ 0 Is proper volume collected? • 0 0 0 Is the tubing clean? • 0 0 ❑ Page# 6 Permit: NC0089176 Inspection Date: 06/21/2016 Owner - Facility: Hoke County W WTP • Inspection Type: Compliance Evaluation Effluent Sampling # Is proper temperature set for sample storage (kept at Tess than or equal to 6.0 degrees Celsius)? Is the facility sampling performed as required by the permit (frequency, sampling type representative)? Yes No NA NE ❑ ❑ ❑ III ❑ ❑ ❑ Comment: Facility staff is working with the instrumentation company to set up the effluent sampler for flow proportional sampling. Currently the sampler is not receiving the 4.20 ma signal from flow measurement device. Upstream / Downstream Sampling Is the facility sampling performed as required by the permit (frequency, sampling type, and sampling location)? Comment: Yes No NA NE ill El El El Page# 7