The URL can be used to link to this page

Home My WebLink AboutWQ0001318_2021 Residuals Annual Report Review_20220427ROY COOPER Governor ELIZABETH S. BISER Secretary RICHARD E. ROGERS, JR. Director NORTH CAROLINA Environmental Quality April 27, 2022 Tom Johnson, Water Resources Director City of Lexington 28 West Center Street Lexington, NC 27292 SUBJECT: 2021 Residuals Annual Report Review City of Lexington, Distribution of Class A Residuals Permit No. WQ0001318 Davidson County Dear Mr. Johnson: Division of Water Resources staff Caitlin Caudle completed a review of the 2021 Residuals Annual Report. This review reflected compliance with the subject permit. Please refer to the enclosed inspection report for additional comments and observations. If you have any questions, please contact Caitlin Caudle at the letterhead address or phone number, or by email at caitlin.caudle@ncdenr.gov. Sincerely, C DocuSigned by:< 1. Jn.lAts' 145B49E225C94EA... Lon T. Snider, Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDEQ-WSRO Enc: Inspection Report Cc: Davidson County Environmental Health (electronic copy) Laserfiche File WQ0001318 WSRO Electronic Files GDE NORTH C CUNA ' umm mr� eo..of o�.i North Carolina Department of Environmental Quality I Division of Water Resources Winston-Salem Regional Office 1450 W. Hanes Mill Rd, Suite 300 I Winston-Salem, North Carolina 27105 336.776.9800 Compliance Inspection Report Permit: WQ0001318 Effective: 08/14/20 Expiration: 06/30/24 Owner : City of Lexington SOC: Effective: Expiration: Facility: City of Lexington DCAR County: Davidson 500 Glendale Rd Region: Winston-Salem Contact Person: Joseph Charles Shaffer Directions to Facility: Lexington NC 27292 Title: Phone: 336-357-5090 System Classifications: LA, Primary ORC: Certification: Phone: Secondary ORC(s): On -Site Representative(s): Related Permits: NC0055786 City of Lexington - Lexington Regional WWTP Inspection Date: 04/22/2022 Entry Time 12:30PM Exit Time: 04:30PM Primary Inspector: Caitlin Caudle Phone: 336-776-9699 Secondary Inspector(s): Reason for Inspection: Routine Inspection Type: Annual Report Review Permit Inspection Type: Distribution of Residual Solids (503) Facility Status: Compliant ❑ Not Compliant Question Areas: Miscellaneous Questions Record Keeping Treatment II Sampling Pathogen and Vector Attraction (See attachment summary) Page 1 of 4 Permit: WQ0001318 Owner - Facility: City of Lexington Inspection Date: 04/22/2022 Inspection Type : Annual Report Review Reason for Visit: Routine Inspection Summary: Division of Water Resources staff Caitlin Caudle completed a review of the 2021 Residuals Annual Report. This review reflected compliance with the subject permit. Other observations: • 2,481 tons of compost were produced and 1,132 tons were distributed. • Based on distribution, quarterly sampling was required. Sampling was completed six times per year. Sampling was completed on 2/3, 4/7, 6/2, 8/4, 10/6, and 12/1. • TCLP was completed last calendar year. TCLP is required once per permit cycle. • pH was less than 6 on 2/3, 4/7, 10/6, and 12/1. • 14 day aerobic digestion (composting) was used for pathogen and vector reduction requirements. • Reported SAR values were different than staff calculated values. On 2/3 the reported value was 1.29 and the calculated value was 1.23. On 4/7 the reported value was 1.37 and the calculated value was 1.30. On 6/2 the reported value was 1.42 and the calculated value was 1.36. On 8/4 the reported value was 1.27 and the calculated value was 1.29. On 10/6 the reported value was 1.29 and the calculated value was 1.33. On 12/1 the reported value was 1.54 and the calculated value was 1.34. There is no concern for salt content in the compost. Please provide SAR calculations with the next annual report. Page 2 of 4 Permit: WQ0001318 Owner - Facility: City of Lexington Inspection Date: 04/22/2022 Inspection Type : Annual Report Review Reason for Visit: Routine Type Land Application Distribution and Marketing Record Keeping 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? Comment: Pathogen and Vector Attraction 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) Temperature corrected d. Salmonella (Class A, all test must be < 3MPN/4 gram day) Yes No NA NE El • Yes No NA NE ❑ ❑ • ❑ ❑ ❑ • ❑ • ▪ ❑ ❑ ❑ ❑ ❑ ❑ ▪ ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ Yes No NA NE O 000 O 000 O 000 O 000 O 000 Page 3 of 4 Permit: WQ0001318 Owner - Facility: City of Lexington Inspection Date: 04/22/2022 Inspection Type : Annual Report Review Reason for Visit: Routine e. Time/Temp on: Digester (MCRT) Compost Class A lime stabilization f. Volatile Solids Calculations g. Bench -top Aerobic/Anaerobic digestion results Comment: Treatment Check all that apply Aerobic Digestion Anaerobic Digestion Alkaline Pasteurization (Class A) Alkaline Stabilization (Class B) Compost Drying Beds Other Comment: Sampling Describe sampling: Is sampling adequate? Is sampling representative? Comment: Yes No NA NE • Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ Page 4 of 4