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HomeMy WebLinkAboutWQ0001990_CEI_20220815 SENT VIA ELECTRONIC MAIL ONLY: NO HARD COPY WILL BE MAILED August 15, 2022 Seth Eckard Emailed to: seckard@ci.valdese.nc.us SUBJECT: Compliance Inspection Report Town of Valdese DCAR Non-discharge Permit No. WQ0001990 Burke County Dear Permittee: The North Carolina Division of Water Resources conducted an inspection of the Town of Valdese DCAR on 8/11/2022. This inspection was conducted to verify that the compost facility is operating in compliance with the conditions and limitations specified in Non-discharge Permit No. WQ0001990. The findings and comments noted during this inspection are provided in the enclosed copy of the inspection report entitled "Compliance Inspection Report". There were no significant issues or findings noted during the inspection and therefore, a response to this inspection report is not required. If you should have any questions, please do not hesitate to contact Melanie Kemp with the Water Quality Regional Operations Section in the Asheville Regional Office at 828-296-4500 or via email at melanie.kemp@ncdenr.gov. Sincerely, Melanie Kemp, Environmental Specialist Water Quality Regional Operations Section Asheville Regional Office Division of Water Resources, NCDEQ ATTACHMENTS: Inspection Report E.c.: LF DocuSign Envelope ID: D405376B-2744-474D-B2EA-D95ECE39BFAF Compliance Inspection Report Permit:WQ0001990 Effective:08/01/19 Expiration:06/30/24 Owner :Town of Valdese SOC: Contact Person: Region: County: Directions to Facility: Burke Asheville Seth Eckard Effective:Expiration:Facility:Town of Valdese DCAR 2100 Lake Rhodhiss Valdese NC 28690 Title:Phone:828-396-7903Town Manager From downtown Valdese, take 70E to left on Laurel Street, right on Lovelady Road, left on Lake Rhodiss Dirve, WWTP is located at the end of the road. Secondary ORC(s): 828-757-2198Phone:1007226Certification:Candace D CoxPrimary ORC: System Classifications: On-Site Representative(s): Related Permits: NC0041696 Town of Valdese - Lake Rhodhiss WWTP Secondary Inspector(s): Primary Inspector: Inspection Date:Exit Time:Entry Time: Phone: 08/11/2022 01:30PM 02:30PM Melanie Kemp Mikal Willmer Facility Status: Permit Inspection Type: Reason for Inspection:Inspection Type: Not CompliantCompliant Routine Distribution of Residual Solids (503) Compliance Evaluation Question Areas: Miscellaneous Questions Record Keeping Treatment Sampling Pathogen and Vector Attraction (See attachment summary) Page 1 of 4 DocuSign Envelope ID: D405376B-2744-474D-B2EA-D95ECE39BFAF Inspection Date: Permit: Inspection Type : Owner - Facility: Reason for Visit: WQ0001990 08/11/2022 Compliance Evaluation Town of Valdese Routine Inspection Summary: Melanie Kemp and Mikal Willmer, with the Asheville Regional Office, conducted a Compliance Evaluation Inspection of the Town of Valdese compost facility on August 11, 2022. This inspection was conducted to determine whether the facility is being operated and maintained in compliance with Permit No. WQ0001990. Candace Cox and Chris Bortnick (Town of Valdese) were present and assisted with the inspection. Overall, the facility appeared to be in compliance. A summary of observations, recommendations and comments noted at the time of the inspection are below. Initial Solids Processing: Biosolids from the wastewater treatment plant are centrifuged and combined with a thickener prior to composting. Percent solids are, on average, 20% prior to loading into a tractor and being hauled to the concreted pad composting area. The Town utilizes one front end loader to move and process all compost. The compost is mixed with 2-10 scoops of mulch prior to being laid in piles approximately 8-10 feet tall. Mulch is a combination of brush mulched on site after being delivered by the Town of Valdese and mulch delivered from a supplier based in Old Fort. Piles are aerated and the temperature is monitored daily for at least 14 days, with the blowers manually turned on and off throughout that time. Temperature is collected from approximately 3 feet within the piles. Corrugated pipes are used for aeration under the piles. Leachate from the composting area is drained within the concrete pad via drop inlets and returned to the headworks of the wastewater treatment plant. The Town reports that minimal woodchips are making their way into this process due to regular cleaning and maintenance of the inlets. Compliance samples are collected by digging a hole with the front-end loader and then scooping the sample out with a spade. Some analyses are performed in-house and the remainder are outsourced to Meritech Labs. The staff reported no issues with pile contamination since 2019. Contaminated product is delivered to a permitted Burke County Landfill. It is recommended that sample depth be added to the monitoring sheets. Final product is not screened. Consumers pick up material and hauling records are completed and kept on site. The Town reports that approximately 3 piles are created per quarter in colder months, and 4 piles per quarter in warmer months. Please ensure that total distribution is reported in dry weight (converted from scoops). Operation and Maintenance: Per permit condition III.2, please include the following information in the O&M Plan: -Contact information for plant personnel, emergency responders, and regulatory agencies -Detailed sampling procedures (how you collect fecal, nutrients, pollutants of concern etc.) -Description of anticipated maintenance, i.e. thermometer calibration, aeration system, etc… -Spill Control Provisions -Detailed inspection procedures -Temperature collection depths from static aeration piles Page 2 of 4 DocuSign Envelope ID: D405376B-2744-474D-B2EA-D95ECE39BFAF Inspection Date: Permit: Inspection Type : Owner - Facility: Reason for Visit: WQ0001990 08/11/2022 Compliance Evaluation Town of Valdese Routine Type Yes No NA NE Land Application Distribution and Marketing Record Keeping Yes No NA NE Is GW monitoring being conducted, if required? Are GW samples from all MWs sampled for all required parameters? Are there any GW quality violations? Is GW-59A certification form completed for facility? Is a copy of current permit on-site? Are current metals and nutrient analysis available? Are nutrient and metal loading calculating most limiting parameters? a. TCLP analysis? b. SSFA (Standard Soil Fertility Analysis)? Are PAN balances being maintained? Are PAN balances within permit limits? Has land application equipment been calibrated? Are there pH records for alkaline stabilization? Are there pH records for the land application site? Are nutrient/crop removal practices in place? Do lab sheets support data reported on Residual Analysis Summary? Are hauling records available? Are hauling records maintained and up-to-date? # Has permittee been free of public complaints in last 12 months? Has application occurred during Seasonal Restriction window? Scheduled to perform TCLP analysis on sludge before 6/30/2023. Currently keeping utilization agreements with product users. Be sure to update O&M Plan (titled "SOP for Static Aerated Pile Costruction") with current processes. See summary for additional details. Comment: Pathogen and Vector Attraction Yes No NA NE a. Fecal coliform SM 9221 E (Class A or B) Class A, all test must be <1000 MPN/dry gram Geometric mean of 7 samples per monitoring period for class B<2.0*10E6 CFU/dry gram Fecal coliform SM 9222 D (Class B only) Geometric mean of 7 samples per monitoring period for class B<2.0*10E6 CFU/dry gram b. pH records for alkaline stabilization (Class A) c. pH records for alkaline stabilization (Class B) Page 3 of 4 DocuSign Envelope ID: D405376B-2744-474D-B2EA-D95ECE39BFAF Inspection Date: Permit: Inspection Type : Owner - Facility: Reason for Visit: WQ0001990 08/11/2022 Compliance Evaluation Town of Valdese Routine Temperature corrected d. Salmonella (Class A, all test must be < 3MPN/4 gram day) e. Time/Temp on: Digester (MCRT) Compost Class A lime stabilization f. Volatile Solids Calculations g. Bench-top Aerobic/Anaerobic digestion results Fecal coliform records reviewed for recent samples collected were within permit limits. Temperature logs up-to-date and compliant. Comment: Treatment Yes No NA NE Check all that apply Aerobic Digestion Anaerobic Digestion Alkaline Pasteurization (Class A) Alkaline Stabilization (Class B) Compost Drying Beds Other Two thickeners and two centrifuges present.Comment: Sampling Yes No NA NE Describe sampling: Grab samples are collected from finished piles of compost. A front end loader digs 3 loader depths from two areas within the pile and samples are collected from the hole using a spade. The samples are composited for analysis and sent to lab for analysis. Is sampling adequate? Is sampling representative? Include temperature collection depths on monitoring sheets and in O&M Plan.Comment: Page 4 of 4 DocuSign Envelope ID: D405376B-2744-474D-B2EA-D95ECE39BFAF