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Home My WebLink AboutNC0030422_Compliance Evaluation Inspection_20181119 North Carolina Department of Environmental Quality | Division of Water Resources 2090 U.S. 70 Highway, Swannanoa, NC 28778 828-296-4500 November 19, 2018 James Francis Green Valley Mobile Home Park PO BOX 861 Waynesville, NC 28786 SUBJECT: Compliance Inspection Report Green Valley Mobile Home Park WWTP NPDES WW Permit No. NC0030422 Haywood County Dear Permittee: The North Carolina Division of Water Resources conducted an inspection of the Green Valley Mobile Home Park WWTP on November 14, 2018. This inspection was conducted to verify that the facility is operating in compliance with the conditions and limitations specified in NPDES WW Permit No. NC0030422. Based on the site visit, the facility was determined to be in compliance. The following items were noted during the inspection:  EQ Basin: Significant debris is entering the basin and clogging the submersible pumps. Recommend taking steps to reduce the amount of trash entering the collection system.  Structural: The facility is showing signs of significant rust throughout the aeration basin and clarifier. The facility should be repainted to extend the life of the WWTP.  Alarms: Audio and visual high-water alarms are located within a shed. Recommend moving these to a more conspicuous location.  Flow & Treatment: The system may be short-circuiting during extended pump runs. This should be further evaluated to assess whether adequate treatment is occurring. DocuSign Envelope ID: E463CA06-6DE4-49E7-A158-943A80B8CC1A North Carolina Department of Environmental Quality | Division of Water Resources 2090 U.S. 70 Highway, Swannanoa, NC 28778 828-296-4500 Additional findings and comments are provided in the enclosed inspection report. If you should have any questions, please do not hesitate to contact me at 828-296-4686 or via email at mikal.willmer@ncdenr.gov. Sincerely, Mikal Willmer, Environmental Specialist Water Quality Regional Operations Section Asheville Regional Office Division of Water Resources, NCDEQ ATTACHMENTS: Inspection Report EC: WQS-ARO Server LF G:\WR\WQ\Haywood\Wastewater\Minors\Green Valley MHP 30422\Inspections\Inspect. Nov. 14, 2018\20181119_NC0030422_CEI DocuSign Envelope ID: E463CA06-6DE4-49E7-A158-943A80B8CC1A EPA United States Environmental Protection Agency 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 Type Inspector Fac Type 1 N 52 NC0030422 18/11/14 C S31112171819 20 21 66 Inspection Work Days Facility Self-Monitoring Evaluation Rating B1 QA ----------------------Reserved------------------- N67707172 73 74 75 80 Section B: Facility Data Name and Location of Facility Inspected (For Industrial Users discharging to POTW, also include POTW name and NPDES permit Number) Green Valley Mobile Home Park 201 Freeman Rd Waynesville NC 28786 Entry Time/Date Permit Effective Date Exit Time/Date Permit Expiration Date 01:30PM 18/11/14 16/02/01 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Joedavid Matthew Hall/ORC/828-586-5588/ Other Facility Data 02:30PM 18/11/14 20/01/31 Name, Address of Responsible Official/Title/Phone and Fax Number James H Francis,PO Box 861 Waynesville NC 28786///Contacted 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 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 Beverly Price ARO WQ//828-296-4500/ Mikal Willmer Division of Water Quality//828-296-4686/ Signature of Management Q A Reviewer Agency/Office/Phone and Fax Numbers Date EPA Form 3560-3 (Rev 9-94) Previous editions are obsolete. Page#1 DocuSign Envelope ID: E463CA06-6DE4-49E7-A158-943A80B8CC1A 11/19/2018 11/19/2018 11/19/2018 NPDES yr/mo/day 18/11/14 Inspection Type C3111218 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Inspectors Mikal Willmer and Beverly Price, with the Asheville Regional Office, conducted a compliance evaluation inspection of the Green Valley MHP WWTP on November 14, 2018. This inspection was conducted to determine whether the facility is being operated and maintained in compliance with NPDES Permit No. NC0030422. ORC Joedavid Hall, with Environmental Inc., was present and assisted in the inspection. The facility is being maintained in compliance with NPDES Permit No. NC0030422; however, there were several items of note that should be addressed to help maintain consistent compliance. The system may be short-circuiting when the pumps kick on for an extended period of time. During the inspection, the continuous discharge from the EQ basin into the Aeration Basin significantly raised the water level within the clarifier effluent launder and the chlorine contact basin. This should be further evaluated to assess whether adequate treatment is occuring during these flow events. EQ Basin: Significant debris is entering the EQ Basin from the MHP collection system. ORC reports this frequently clogs the pumps. Steps should be taken to reduce the amount of trash and debris entering the collection system to prevent long term damage to the WWTP. Since the bar screen is not easily accessible, this would help reduce the hours required to maintain the EQ basin. Audio & Visual Alarms: The audio and visual high-water alarms are located within a shed and not visible to passersby. Recommend moving these to a conspicuous location to help alert Green Valley staff and residents to notify plant personnel. Aeration Basin/Clarifier: The WWTP is showing age related wear and corrosion. Recommend painting the facility to prevent further deterioration and prolong the life of the plant. Chlorine and Dechlor tubes: Recommend additional caps to prevent extraneous flow from entering the system. Chlorine Contact Chamber: concrete is beginning to spall from the chamber and baffles are beginning to rust. NC0030422 17 (Cont.) Page#2 DocuSign Envelope ID: E463CA06-6DE4-49E7-A158-943A80B8CC1A Permit:NC0030422 Inspection Date:11/14/2018 Owner - Facility: Inspection Type: Green Valley Mobile Home Park Compliance Evaluation Operations & Maintenance Yes No NA NE Is the plant generally clean 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? ORC has the ability to wash down treatment components. Green Valley staff maintain and remove the trash from the bar screen in the EQ basin. The bar screen is not easily accessible. Comment: Permit Yes No NA NE (If the present permit expires in 6 months or less). Has the permittee submitted a new application? Is the facility as described 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: Bar Screens Yes No NA NE 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? A manual bar screen sits below the influent pipe to the EQ basin to catch incoming debris. The bar screen appears to be undersized and/or inadequate to handle the incoming debris. ORC reports pumps continually clog from debris within the EQ basin. The bar screen is not easily accessible for cleaning. The permittee to should attempt to reduce the amount of debris entering the collection system. Comment: Flow Measurement - Effluent Yes No NA NE # Is flow meter used for reporting? Is flow meter calibrated annually? Is the flow meter operational? (If units are separated) Does the chart recorder match the flow meter? Facility has instantaneous flow monitoring. ORC calculates flow based on volume over time.Comment: Page#3 DocuSign Envelope ID: E463CA06-6DE4-49E7-A158-943A80B8CC1A Permit:NC0030422 Inspection Date:11/14/2018 Owner - Facility: Inspection Type: Green Valley Mobile Home Park Compliance Evaluation Flow Measurement - Effluent Yes No NA NE Equalization Basins Yes No NA NE Is the basin aerated? Is the basin free of bypass lines or structures to the natural environment? Is the basin free of excessive grease? Are all pumps present? Are all pumps operable? Are float controls operable? Are audible and visual alarms operable? # Is basin size/volume adequate? Pumps and floats are operable. Grease is beginning to build up within the EQ basin. Audio and visual alarms are present; however, they are located inside the shed that houses the blowers. Recommend moving the alarms outside since telemetry is not installed. The basin is cleaned out twice a year. Comment: Aeration Basins Yes No NA NE Mode of operation Plug flow Type of aeration system Diffused Is the basin free of dead spots? Are surface aerators and mixers operational? Are the diffusers operational? Is the foam the proper color for the treatment process? Does the foam cover less than 25% of the basin’s surface? Is the DO level acceptable? Is the DO level acceptable?(1.0 to 3.0 mg/l) Only one of the blowers is operational. ORC reports they are in the process of repairing the second motor. Blower cycles on for 15 minutes and off for 45 minutes. Comment: Secondary Clarifier Yes No NA NE 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? Page#4 DocuSign Envelope ID: E463CA06-6DE4-49E7-A158-943A80B8CC1A Permit:NC0030422 Inspection Date:11/14/2018 Owner - Facility: Inspection Type: Green Valley Mobile Home Park 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 ¼ of the sidewall depth) Pin floc was visible and exiting the clarifier when EQ pumps were active.Comment: Aerobic Digester Yes No NA NE 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? The ORC can aerate the sludge holding tank as needed. No reported issue with storage capacity of solids. Solids are removed twice a year. Comment: Disinfection-Tablet Yes No NA NE Are tablet chlorinators operational? Are the tablets the proper size and type? Number of tubes in use?1 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? Comment: 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? # Is de-chlorination substance stored away from chlorine containers? Comment: Are the tablets the proper size and type? Are tablet de-chlorinators operational? Page#5 DocuSign Envelope ID: E463CA06-6DE4-49E7-A158-943A80B8CC1A Permit:NC0030422 Inspection Date:11/14/2018 Owner - Facility: Inspection Type: Green Valley Mobile Home Park Compliance Evaluation De-chlorination Yes No NA NE Number of tubes in use?1 Comment: Effluent Pipe Yes No NA NE Is right of way to the outfall properly maintained? Are the receiving water free of foam other than trace amounts and other debris? If effluent (diffuser pipes are required) are they operating properly? Comment: 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)? Facility is only required to collect grab samples. ORC collects samples from the effluent pipe. Recommend removing some of the debris near the effluent pipe to improve accessibility. Comment: Page#6 DocuSign Envelope ID: E463CA06-6DE4-49E7-A158-943A80B8CC1A