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Home My WebLink AboutWQ0016165_Compliance Inspection_20220222R.OY COOPER. Governor ELIZABETH S. BISER Secretary S. DANIEL SMITH Director NORTH CAROLINA Environmental Quality February 22, 2022 Tom Johnson, Water Resources Superintendent City of Lexington 28 West Center Street Lexington, North Carolina 27292 SUBJECT: Compliance Evaluation Inspection City of Lexington WWI Wastewater Irrigation System Davidson County Dear Mr. Jones: On February 17, 2022, Division of Water Resources staff Caitlin Caudle conducted a scheduled compliance inspection and permitting visit. Steve Craver and Jeff Walser were present during the entire inspection. A review of records, irrigation fields, and pumping equipment was completed. This review reflected compliance with the subject permit. Please reference the attached inspection report for additional comments and observations. If you have any questions please contact me or Caitlin Caudle at the letterhead address or phone number, or by email at lon.sniderncdenr.gov or caitlin.caudle(a�ncdenr.gov. Sincerely, DocuSigned by:< C1. Jn,lhts- 145B49E225C94EA... Lon T. Snider, Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDEQ — WSRO Enc: Inspection Report Cc: Steve Craver, Plant Superintendent (Electronic Copy) Davidson County Environmental Health (Electronic Copy) WSRO Electronic Files Laserfiche File WQ0016165 NORTH D E Department of Envimnmomni au.i` North Carolina Department of Environmental Quality Division of Water Resources Winston-Salem Regional Office 1450 West Hanes Mill Road, Suite 300 I Winston-Salem, North Carolina 27105 336.776.9800 Compliance Inspection Report Permit: WQ0016165 Effective: 07/02/18 Expiration: 07/31/22 Owner : City of Lexington SOC: Effective: Expiration: Facility: City of Lexington WWIS County: Davidson 500 Glendale Rd Region: Winston-Salem Contact Person: Tom Johnson Lexington NC 27292 Title: Phone: 336-248-3926 Directions to Facility: from 1-85 N go 3.1 mi, take exit #91 go 0.2 mi, turn left on Cotton Grove Rd. go 0.4 mi, turn left on Glendale Rd. go 0.8 mi, arrive at the site on the left. System Classifications: SI, Primary ORC: Certification: Phone: Secondary ORC(s): On -Site Representative(s): Related Permits: NC0055786 City of Lexington - Lexington Regional WWTP Inspection Date: 02/17/2022 Entry Time 10:04AM Exit Time: 11:40AM Primary Inspector: Caitlin Caudle Phone: 336-776-9699 Secondary Inspector(s): Reason for Inspection: Routine Inspection Type: Compliance Evaluation Permit Inspection Type: Wastewater Irrigation Facility Status: Compliant ❑ Not Compliant Question Areas: Miscellaneous Questions Record Keeping End Use -Irrigation (See attachment summary) Page 1 of 4 Permit: WQ0016165 Owner - Facility: City of Lexington Inspection Date: 02/17/2022 Inspection Type : Compliance Evaluation Reason for Visit: Routine Inspection Summary: On February 17, 2022, DWR staff person Caitlin Caudle conducted a scheduled compliance inspection and permitting visit Steve Craver and Jeff Walser were present during the entire inspection. A review of records, irrigation fields, and pumping equipment was completed. This review reflected compliance with the subject permit. The treatment plant was not inspected. The following observations were made: • Irrigation equipment has not been calibrated this permit cycle. A new meter was installed in 2013 and it appeared a calibration check was completed on June 14, 2017. A new permit was issued on July 2, 2018, after a permit modification request. Mr. Craver stated that a new effluent flow meter will be purchased. • Influent is measured at the head of the treatment plant, and effluent is measured using a flow meter on the irrigation pump. • There is no effluent storage at this facility. The treatment plant also has a discharge permit and a compost facility. Irrigation is not the primary disposal manner. Irrigation is only completed after the "reuse pump" has been turned off. • Irrigation is completed when weather allows and when the 12 month floating total allows it. The system is winterized from approximately November to April. Irrigation was initiated in April of last year and stopped at the end of October. • Irrigation is 100% manual. A separate pump must be turned off and the irrigation pump turned on. There is not a wet well. The irrigation pump is located after the chlorine contact chamber. • Some of the irrigation field perimeter has public access restricted, but Mr. Craver stated they will be adding additional signage. • Some I&I is present in the collection system. • 9,000 GPD was determined based on the 30 in/yr irrigation limit. • The Operation and Maintenance Plan and Spill Plan are tied into the NPDES permit. Ms. Caudle requested that some language be added to the Spill Plan concerning emergencies in the irrigation field. Mr. Craver stated that something will be posted in the building with the irrigation control panel. • All residuals from the treatment plant are composted. • The influent flow meter is calibrated quarterly. • There are no high water alarms related to the irrigation pump as there is not a wet well or any storage. • Domestic wastewater accounts for 42% of the permitted flow and industrial wastewater accounts for 3% of the permitted flow. • The chlorine contact chamber will be reviewed during the next inspection. Page 2 of 4 Permit: WQ0016165 Owner - Facility: City of Lexington Inspection Date: 02/17/2022 Inspection Type : Compliance Evaluation Reason for Visit: Routine Type Reuse (Quality) Infiltration System Lagoon Spray, LR Single Family Spray, LR Activated Sludge Spray, LR Activated Sludge Spray, HR Activated Sludge Drip, LR Recycle/Reuse Single Family Drip Record Keeping Is a copy of current permit available? Are monitoring reports present: NDMR? NDAR? Are flow rates less than of permitted flow? Are flow rates less than of permitted flow? Are application rates adhered to? Is GW monitoring being conducted, if required (GW-59s submitted)? Are all samples analyzed for all required parameters? Are there any 2L GW quality violations? Is GW-59A certification form completed for facility? Is effluent sampled for same parameters as GW? Do effluent concentrations exceed GW standards? Are annual soil reports available? # Are PAN records required? # Did last soil report indicate a need for lime? If so, has it been applied? Are operational logs present? Are lab sheets available for review? Do lab sheets support data reported on NDMR? Do lab sheets support data reported on GW-59s? Are Operational and Maintenance records present? Were Operational and Maintenance records complete? Has permittee been free of public complaints in last 12 months? Is a copy of the SOC readily available? Yes No NA NE El Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ • ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ Page 3 of 4 Permit: WQ0016165 Owner - Facility: City of Lexington Inspection Date: 02/17/2022 Inspection Type : Compliance Evaluation Reason for Visit: Routine No treatment units bypassed since last inspection? Comment: No lime was needed. End Use -Irrigation Are buffers adequate? Is the cover crop type specified in permit? Is the crop cover acceptable? Is the site condition adequate? Is the site free of runoff / ponding? Is the acreage specified in the permit being utilized? Is the application equipment present? Is the application equipment operational? Is the disposal field free of limiting slopes? Is access restricted and/or signs posted during active site use? Are any supply wells within the CB? Are any supply wells within 250' of the CB? How close is the closest water supply well? Is municipal water available in the area? # Info only: Does the permit call for monitoring wells? Are GW monitoring wells located properly w/ respect to RB and CB? Are GW monitoring wells properly constructed, including screened interval? Are monitoring wells damaged? Comment: Monitoring wells are not requried by the permit. • ❑ ❑ ❑ Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ • • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ • ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ Page 4 of 4