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HomeMy WebLinkAboutNC0026557_NOVNOI2021PC0166_Compliance Evaluation Inspection_20210303 Certified Mail # 7020 1290 0001 1766 8477 Return Receipt Requested March 03, 2021 Regina Mathis, Town Manager Town of Bryson City PO Box 726 Bryson City, NC 28713-0726 SUBJECT: NOTICE OF VIOLATION & INTENT TO ASSESS CIVIL PENALTY Tracking Number: NOV-2021-PC-0166 Permit No. NC0026557 Bryson City WWTP Swain County Dear Permittee: The North Carolina Division of Water Resources conducted an inspection of the Bryson City WWTP on February 25, 2021. This inspection was conducted to verify that the facility is operating in compliance with the conditions and limitations specified in NPDES WW Permit No. NC0026557. A summary of the findings and comments noted during the inspection are provided in the enclosed copy of the inspection report. The Compliance Evaluation inspection was conducted by Division of Water Resources staff from the Asheville Regional Office. The following violation(s) were noted during the inspection: Inspection Area Description of Violation _________________________________________________________________________________________________________________________________________________________________________ Bar Screens The bar screens are not functioning adequately to maintain continuous facility compliance. Permit Standard Conditions Section C. 2 requires the permittee to properly operate and maintain all facilities and systems of treatment which are installed to achieve compliance. _________________________________________________________________________________________________________________________________________________________________________ DocuSign Envelope ID: 310E0BAA-9398-4B93-BE14-A58F45C0BE93 Inspection Area Description of Violation _________________________________________________________________________________________________________________________________________________________________________ Pumps-RAS-WAS The return pump in WWTP #2 is currently not working because there is a hole in the line. Permit Standard Conditions Section C. 2 requires the permittee to properly operate and maintain all facilities and systems of treatment which are installed to achieve compliance. _________________________________________________________________________________________________________________________________________________________________________ Disinfection-Liquid The chlorine contact chamber has excess solids and a high sludge blanket. Permit Standard Conditions Section C. 2 requires the permittee to properly operate and maintain all facilities and systems of treatment which are installed to achieve compliance. _________________________________________________________________________________________________________________________________________________________________________ Effluent Sampling The composite sampler was not working and the thermometer was broken at the time of the inspection. Permit Standard Conditions Section C. 2 requires the permittee to properly operate and maintain all facilities and systems of treatment which are installed to achieve compliance. _________________________________________________________________________________________________________________________________________________________________________ Flow Measurement - Effluent The effluent weir plate is breaking loose from the concrete. Permit Standard Conditions Section C. 2 requires the permittee to properly operate and maintain all facilities and systems of treatment which are installed to achieve compliance. _________________________________________________________________________________________________________________________________________________________________________ In addition, the issues below must also be addressed: Compliance Issue(s): 1. The WWTP #2 aeration basin DO level was inadequate, with DO levels ranging from 0.20-0.22 mg/L. The blowers need to be checked and adjusted accordingly and/or replaced if necessary. 2. Both secondary clarifier wells have a buildup of solids and floating debris/trash. Additionally, floating sludge was visible in both secondary clarifiers, and debris had accumulated in areas of the weir teeth. The secondary clarifiers should be maintained better to prevent excess solid s and debris/trash from leaving the facility. A Notice of Violation/Intent to Issue Civil Penalty is being issued for the noted violation of North Carolina General Statute (G.S.) 143-215.1 and the facility’s NPDES WW Permit. Pursuant to G.S. 143-215.6A, a civil penalty of not more than twenty-five thousand dollars ($25,000.00) may be assessed against any person who violates or fails to act in accordance with the terms, conditions, or requirements of any permit issued pursuant to G.S. 143-215.1. If you wish to provide additional information regarding the noted violation, request technical assistance, or discuss overall compliance please respond in writing within ten (10) business days after receipt of this Notice. A review of your response will be considered along with any additional information provided. You will then be notified of any civil penalties that may be assessed regarding the violations. If no response is received in this Office within the 10-day period, a civil penalty assessment may be prepared. DocuSign Envelope ID: 310E0BAA-9398-4B93-BE14-A58F45C0BE93 Remedial actions should have already been taken to correct this problem and prevent further occurrences in the future. The Division of Water Resources may pursue enforcement action for this and any additional violations of State law. If the violations are of a continuing nature, not related to operation and/or maintenance problems, and you anticipate remedial construction activities, then you may wish to consider applying for a Special Order by Consent. Reminder: Pursuant to Permit Condition 6 in Section E, the Permittee is required to verbally notify the Regional Office as soon as possible, not to exceed 24 hours, from first knowledge of any non-compliance at the facility including limit violations, bypasses of, or failure of a treatment unit. A written report may be required within 5 days if directed by Division staff. Prior notice should be given for anticipated or potential problems due to planned maintenance activities, taking units off-line, etc. If you should have any questions, please do not hesitate to contact Lauren Armeni with the Water Quality Regional Operations Section in the Asheville Regional Office at 828-296-4500. Sincerely, Daniel Boss, Assistant Regional Supervisor Water Quality Regional Operations Section Asheville Regional Office Division of Water Resources, NCDEQ ATTACHMENTS: Inspection Report Ec: LF DocuSign Envelope ID: 310E0BAA-9398-4B93-BE14-A58F45C0BE93 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 NC0026557 21/02/25 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) Bryson City WWTP US Hwy 19 W Bryson City NC 28713 Entry Time/Date Permit Effective Date Exit Time/Date Permit Expiration Date 10:00AM 21/02/25 18/04/01 Name(s) of Onsite Representative(s)/Titles(s)/Phone and Fax Number(s) /// Dale Howard Wike/ORC/828-293-9396/ Other Facility Data 12:30PM 21/02/25 23/03/31 Name, Address of Responsible Official/Title/Phone and Fax Number Regina Mathis,PO Box 726 Bryson City NC 287130726/Town Manager/828-488-3335/8284889474 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 Lauren E Armeni DWR/ARO WQ/828-296-4500/ Timothy H Heim DWR/ARO WQ/828-296-4665/ 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: 310E0BAA-9398-4B93-BE14-A58F45C0BE93 3/9/2021 3/9/2021 DocuSign Envelope ID: 1C950779-881F-4976-BC34-EB40F215B6AE 3/9/2021 NPDES yr/mo/day 21/02/25 Inspection Type C3111218 1 Section D: Summary of Finding/Comments (Attach additional sheets of narrative and checklists as necessary) Lauren Armeni and Tim Heim, with the Asheville Regional Office, conducted a compliance evaluation inspection of the Bryson City WWTP on February 25, 2021. This inspection was conducted to determine whether the facility is being operated and maintained in compliance with NPDES Permit No. NC0026557. Dale Wike (ORC) and Greg Passmore (BORC) were present and assisted in the inspection. Facility consists of a mechanical bar screen, two contact stabilization treatment units consisting of influent pumping, aeration and reaeration zones, secondary clarifiers, a sludge digester, belt press & sludge dry storage, and chlorination and dechlorination. The following items were noted during the inspection: Bar Screen: The bar screens are not functioning adequately to maintain continuous facility compliance. Significant solids are passing through the headworks and interfering with other components of the facility and negatively impacting the effluent. The screens also require constant manual cleaning and are a significant maintenance burden to staff, as well as a possible hygiene hazard. Replacement of the bar screens should be made a priority during plant upgrades. Aeration Basins: The BORC had measured settleability prior to the inspection and the results were as follows: aeration basin from WWTP #1 - 50% and aeration basin from WWTP #2 - 65%. Settleability is not as good in WWTP #2, which could be a result of the return pump not properly working in WWTP #2. The ORC stated that the MLSS is maintained around 3,000-4,000 mg/L. DO varied in both aeration basins, and levels were too low in aeration basin #2 at 0.20-0.22 mg/L. The ORC will need to adjust the blowers in the aeration basin of WWTP #2 and/or replace blowers as necessary. Secondary Clarifiers: The center wells in both WWTP #1 and WWTP #2 clarifiers had a buildup of solids and other floating debris that should have been removed with the bar screen. Floating sludge was visible in both clarifiers. Debris was noted accumulating in areas of the weir teeth, so it is recommended to increase their cleaning frequency. RAS Pump: The ORC discovered a hole in the return sludge pipe of WWTP #2 a couple weeks ago. The ORC stated they were waiting for parts to come in and in the meantime have another pump in the #2 secondary clarifier to return sludge. The ORC has a plan to drawdown the #2 aeration basin since the RAS pipe is submerged underwater. The unused digester (currently a surge tank) of WWTP #2 will then be used as a temporary aeration basin while the repair is being made. Chlorine Contact Chamber: The chlorine contact chamber had a sludge blanket of 1.5 feet out of 5 feet. The ORC stated that the chamber gets cleaned out monthly, but this frequency appears to not be enough due to the sludge blanket level and floating solids. It is recommended to clean out the chlorine contact chamber more frequently. Additionally, the vegetation around the chamber was overgrown and needs to be maintained. Effluent Sampling: During the inspection, the composite sampler would not turn on. Determine if the sampler can be repaired, and if not, a new composite sampler should be purchased. We could not determine whether or not the sampler was set to be flow proportional since it would not turn on, nor could we determine the sampling aliquots. Additionally, the thermometer was broken and needs to be replaced. Flow Measurement - Effluent: The effluent weir plate is breaking loose from the concrete. This issue NC0026557 17 (Cont.) Page#2 DocuSign Envelope ID: 310E0BAA-9398-4B93-BE14-A58F45C0BE93DocuSign Envelope ID: 1C950779-881F-4976-BC34-EB40F215B6AE Permit:NC0026557 Inspection Date:02/25/2021 Owner - Facility: Inspection Type: Bryson City WWTP Compliance Evaluation needs to be fixed immediately to ensure flow can continually be measured. Overall,the facility is in non-compliance with the requirements outlined in the permit for the following reasons: 1. The bar screens are not functioning adequately to maintain continuous facility compliance. 2. The RAS pump in WWTP #2 is currently not operational. A hole was discovered in the RAS pump line. The ORC stated they are waiting on the parts and will replace the line as soon as possible. 3. The chlorine contact chamber contained floating solids and had a sludge blanket of 1.5 feet out of 5 feet. There should not be solids in the contact chamber. 4. The composite sampler would not turn on during the inspection. The sampler needs to be repaired and replaced if necessary. Additionally, the thermometer was broken and needs to be replaced. Verify that the composite sampler is set to be flow proportional. 5. The effluent weir plate is breaking loose from the concrete and needs to be repaired to ensure that flow can be continually measured. Page#3 DocuSign Envelope ID: 310E0BAA-9398-4B93-BE14-A58F45C0BE93DocuSign Envelope ID: 1C950779-881F-4976-BC34-EB40F215B6AE Permit:NC0026557 Inspection Date:02/25/2021 Owner - Facility: Inspection Type: Bryson City WWTP Compliance Evaluation 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: 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? Process controls include DO, chlorine residual, sludge judge, MLSS and settleometer.Comment: Record Keeping Yes No NA NE 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 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? Page#4 DocuSign Envelope ID: 310E0BAA-9398-4B93-BE14-A58F45C0BE93DocuSign Envelope ID: 1C950779-881F-4976-BC34-EB40F215B6AE Permit:NC0026557 Inspection Date:02/25/2021 Owner - Facility: Inspection Type: Bryson City WWTP Compliance Evaluation Record Keeping Yes No NA NE Facility has copy of previous year's Annual Report on file for review? 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? The bar screens are not functioning adequately to maintain continuous facility compliance. See summary for details. Comment: Aeration Basins Yes No NA NE Mode of operation Ext. Air 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) DO was measured at various locations in both WWTP #1 and WWTP #2 aeration basins. In WWTP #1, DO levels ranged from 3.64-3.68 mg/L. In WWTP #2, DO levels ranged from 0.20-0.22 mg/L. Blowers in aeration basin of WWTP #2 should be adjusted and/or replaced. DO levels were acceptable in the aeration basin of WWTP #1, but too low in the aeration basin of WWTP #2. See summary for details. 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? Page#5 DocuSign Envelope ID: 310E0BAA-9398-4B93-BE14-A58F45C0BE93DocuSign Envelope ID: 1C950779-881F-4976-BC34-EB40F215B6AE Permit:NC0026557 Inspection Date:02/25/2021 Owner - Facility: Inspection Type: Bryson City WWTP Compliance Evaluation Secondary Clarifier Yes No NA NE 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 ¼ of the sidewall depth) The center wells in both WWTP #1 and WWTP #2 clarifiers had a buildup of solids and other floating debris that should have been removed with the bar screen. Floating sludge was visible in both clarifiers. Debris was noted accumulating in areas of the weir teeth, so it is recommended to increase their cleaning frequency. See summary for details. Comment: Pumps-RAS-WAS Yes No NA NE Are pumps in place? Are pumps operational? Are there adequate spare parts and supplies on site? The return pump in the #2 WWTP is currently not working. See summary for details. 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 digester is only utilized in WWTP #1. ORC stated the digester in WWTP #2 is being used as a surge basin. Comment: Solids Handling Equipment Yes No NA NE 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? Page#6 DocuSign Envelope ID: 310E0BAA-9398-4B93-BE14-A58F45C0BE93DocuSign Envelope ID: 1C950779-881F-4976-BC34-EB40F215B6AE Permit:NC0026557 Inspection Date:02/25/2021 Owner - Facility: Inspection Type: Bryson City WWTP Compliance Evaluation Solids Handling Equipment Yes No NA NE Is the site free of excessive moisture in belt filter press sludge cake? The facility has an approved sludge management plan? The belt press was not in operation at the time of the inspection and was not fully evaluated.Comment: Disinfection-Liquid Yes No NA NE 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? The chlorine contact chamber had a sludge blanket of 1.5 feet out of 5 feet. The ORC stated that the chamber gets cleaned out monthly, but this frequency appears to not be enough due to the sludge blanket level and floating solids. See summary for details. Comment: De-chlorination Yes No NA NE Type of system ?Liquid 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: 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)? Page#7 DocuSign Envelope ID: 310E0BAA-9398-4B93-BE14-A58F45C0BE93DocuSign Envelope ID: 1C950779-881F-4976-BC34-EB40F215B6AE Permit:NC0026557 Inspection Date:02/25/2021 Owner - Facility: Inspection Type: Bryson City WWTP Compliance Evaluation Effluent Sampling Yes No NA NE Is the facility sampling performed as required by the permit (frequency, sampling type representative)? The effluent composite sampler would not turn on during the inspection. The sampler needs to be maintained to determine if it can be fixed, and if not, a new composite sampler should be purchased. See summary for details. 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? The effluent weir plate is breaking loose from the concrete. This issue needs to be fixed immediately to ensure flow can continually be measured. 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: Standby Power Yes No NA NE 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? The generator is tested every Monday and all components are checked and maintained semi-annually. At the time of the inspection, the fuel level was 3/4 full. 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