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Home My WebLink AboutNC0020800_Inspection_20180412DocuSign Envelope ID: 84750A83-6253-4A70-BEBB-9EB9293AE2F3 Q ter Resources €NWRCWHEWFAL 4UALI7Y April 12, 2018 Town Manager Town of Andrews PO Box 1210 Andrews, NC 28901 SUBJECT: NOTICE OF DEFICIENCY Tracking Number: NOD-2018-PC-0148 Permit No. NCO020800 Andrews WWTP Cherokee County Dear Permittee: ROY COOPER GM-arno! Nf-ICH EL S _ REGAN Sec Felt Ft LI DA OLTLPEPPER lnle ' m DFrec.rar Tim Heim and I from the North Carolina Division of Water Resources conducted an inspection of the Andrews WWTP on April 10, 2018. Many improvements were noted from the previous inspection and we were satisfied with the construction projects that had been completed. We recognize the difficulty in maintaining perfect operations during periods of construction, but we did note a couple deficiencies that need correction: Inspection Area Description of Deficiency Pump Station - Influent Mr. Wood said that the alarms did not work and he did not know the cause of failure. Secondary Clarifier One of the clarifiers was broken but was still being used for treatment. Black sludge was bubbling to the surface and in some parts flowing over the weir. Please let us know when these repairs have been completed. We recognize that the clarifier repair had already begun and that Mr. Wood was waiting on delivery of a part before it could be completed. If you should have any questions, please do not hesitate to contact Daniel Boss with the Water Quality Regional Operations Section in the Asheville Regional Office at 828-296-4500. Sincerely, DocuSigned by: r-� 7E617A38285848C... G. Landon Davidson, P.G., Regional Supervisor Water Quality Regional Operations Section Asheville Regional Office Division of Water Resources, NCDEQ State of North Carolina I Environmental Quality I Water Resources 2090 U.S. 70 Highway, Swannanoa, NC 28778 828-296-4500 DocuSign Envelope ID: 84750A83-6253-4A70-BEBB-9EB9293AE2F3 Cc: ARO Server Laserfiche 20180412_NC0020800_NOD2018PC0148. rtf State of North Carolina I Environmental Quality I Water Resources 2090 U.S. 70 Highway, Swannanoa, NC 28778 828-296-4500 DocuSign Envelope ID: 84750A83-6253-4A70-BEBB-9EB9293AE2F3 United 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 15 I 3 I NCO020800 111 12 I 18/04/10 I17 18 I S J 19 L G] 201 I 211111 I I I I I I II I I I I I I I I I I I I I I I I I I I I I I I II I I I I I f6 Inspection Work Days Facility Self -Monitoring Evaluation Rating B1 QA ---------------------- Reserved ------------------- 671 70 I I 71 I I 72 I r I u ty 73 I I 174 751 I I I I I I I80 I 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 oermit Number) 11:00AM 18/04/10 13/08/01 Andrews WWTP Reagan Ave Exit Time/Date Permit Expiration Date Andrews NC 28901 12:15PM 18/04/10 17/08/31 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) Other Facility Data Timothy Brian Wood/ORC/828-557-8630/ Name, Address of Responsible Official/Title/Phone and Fax Number Contacted Michael Ladd,PO Box 1210 Andrews NC 289011210//828-321-3113/ No Section C: Areas Evaluated During Inspection (Check only those areas evaluated) Operations & Maintenance 0 Sludge Handling Disposal 0 Facility Site Review Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) (See attachment summary) of Inspector(s) Agency/Office/Phone and Fax Numbers Name(s) and SRgDS Date 4/12/2018 Daniel J Boss ARO WQ//828-296-4658/ Timothy H Hei ARO WQ//828-296-4665/ 4/13/2018 Signature of Me—DSent Q A Reviewer Agency/Office/Phone and Fax Numbers Date (:�:p 4/13/2018 EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page# DocuSign Envelope ID: 84750A83-6253-4A70-BEBB-9EB9293AE2F3 NPDES yr/mo/day Inspection Type (Cont.) NCO020800 I11 12, 18/04/10 117 18 JCJ Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) On 4/10/2018, Tim Heim and I(Daniel Boss) conducted a compliance evaluation inspection at the Andrews WWTP. We met with Tim Wood (ORC) who guided us through the plant. We noted many improvements to the plant since the last inspection. The new mechanical bar screen, trickling filters, and aerobic digester all appeared to be operating well. I could see that these recently completed construction projects have greatly improved the functionality of the plant. Deficiencies were found with a secondary clarifier and the influent pump station. One of the secondary clarifiers was broken but flow was still being sent through it. Black sludge was bubbling to the surface of the clarifier and some sludge was going over the weir. Mr. Wood said that the clarifier had broken about 5 days prior and that he was waiting on a part to arrive. He said he would shut off flow to the clarifier, and that he had not wanted to divert all the flow to the remaining functional clarifier for fear of hydraulic overloading. The influent pump station apparently has no functional alarms at the moment. Mr. Wood could not tel me when it would get repaired, aside from being completely replaced at some point during plant refurbishment. An influent pump station alarm is an essential environmental safety component of any lift station to prevent sanitary sewer overflows and repair cannot be delayed. Please contact us when these deficiencies have been repaired. We recognize the difficulty of maintaining perfect operations during periods of major construction. Page# DocuSign Envelope ID: 84750A83-6253-4A70-BEBB-9EB9293AE2F3 Permit: NCO020800 Owner - Facility: Andrews WWTP Inspection Date: 04/10/2018 Inspection Type: Compliance Evaluation 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: 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: Pump Station - Influent Yes No NA NE Is the pump wet well free of bypass lines or structures? ❑ ❑ ❑ Is the wet well free of excessive grease? ❑ ❑ ❑ 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? ❑ M ❑ ❑ Comment: Mr. Wood said that the alarms did not work and he did not know the cause of failure. Trickling Filter Is the filter free of ponding? Is the filter free of leaks at the center column of filter's distribution arms? Is the distribution of flow even from the distribution arms? Is the filter free of uneven or discolored growth? Is the filter free of sloughing of excessive growth? Are the filter's distribution arms orifices free of clogging? Is the filter free of excessive filter flies, worms or snails? Yes No NA NE ■ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ Page# 3 DocuSign Envelope ID: 84750A83-6253-4A70-BEBB-9EB9293AE2F3 Permit: NCO020800 Owner - Facility: Andrews WWTP Inspection Date: 04/10/2018 Inspection Type: Compliance Evaluation Trickling Filter 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)? Is the overflow clear of excessive solids/pin floc? Is the sludge blanket level acceptable? (Approximately'/ of the sidewall depth) Yes No NA NE Yes No NA NE ❑ ■ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ■ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ■ Comment: One of the clarifiers was broken but was still being used for treatment. Black sludge was bubbling to the surface and in some parts flowing over the weir. 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: Drying Beds Yes No NA NE Is there adequate drying bed space? ❑ 0 ❑ ❑ Is the sludge distribution on drying beds appropriate? 0 ❑ ❑ ❑ Are the drying beds free of vegetation? ❑ 0 ❑ ❑ # Is the site free of dry sludge remaining in beds? ❑ 0 ❑ ❑ Is the site free of stockpiled sludge? 0 ❑ ❑ ❑ Is the filtrate from sludge drying beds returned to the front of the plant? ❑ ❑ ❑ # Is the sludge disposed of through county landfill? ❑ ❑ ❑ # Is the sludge land applied? ❑ ❑ ❑ Page# 4 DocuSign Envelope ID: 84750A83-6253-4A70-BEBB-9EB9293AE2F3 Permit: NCO020800 Owner - Facility: Andrews WWTP Inspection Date: 04/10/2018 Inspection Type: Compliance Evaluation Drying Beds (Vacuum filters) Is polymer mixing adequate? Comment: Drying bed space seems to be a limitation. 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: Disinfection -Gas Are cylinders secured adequately? Are cylinders protected from direct sunlight? Is there adequate reserve supply of disinfectant? 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? Does the Stationary Source have more than 2500 Ibs of Chlorine (CAS No. 7782-50-5)? If yes, then is there a Risk Management Plan on site? If yes, then what is the EPA twelve digit ID Number? (1000- - ) If yes, then when was the RMP last updated? Yes No NA NE ❑ ❑ ■ ❑ Yes No NA NE Gas ❑ ❑ ❑ ■ ■ ❑ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ■ ❑ ❑ ❑ ■ ❑ Yes No NA NE ■ ❑ ❑ ❑ ❑ ■ ❑ ❑ ■ ❑ ❑ ❑ ❑ ❑ ❑ ■ ■ ❑ ❑ ❑ ❑ ❑ ❑ ■ ❑ ■ ❑ ❑ ❑ ❑ ■ ❑ Comment: The chlorine gas tanks were outside, uncovered. Mr. Wood said that he would put the tanks in a storage building nearby. Page# 5