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Home My WebLink AboutWQ0010583_2021 Annual Report Review_20220526ROY COOPER Governor ELIZABETH S. BISER Secretary RICHARD E. ROGERS, JR. Director NORTH CAROLINA Environmental Quality May 26, 2022 Mr. Johnny Lambert, Public Utilities Director Davie County 123 South Main Street Mocksville, NC 27028 SUBJECT: 2021 Residuals Annual Report Review Davie County Residuals Land Application Program Permit No. WQ0010583 Davie County Dear Mr. Lambert: Division of Water Resources staff Caitlin Caudle completed a review of the 2021 Residuals Annual Report. This review reflected compliance with the subject permit. The following item of concern was noted: 1. The Pathogen and Vector Attraction Reduction Form for June 10, 2021, indicated that 30-day Bench Scale Test was being used in meet vector reduction requirements. Per Permit Condition 11.7 "biological residuals ... that are distributed shall meet one of the vector attraction reduction alternatives in 15A NCAC 02T .1107(a)." 15A NCAC 02T .1107(a)(3) describes 30-day Bench Scale Test as being completed with residuals with less than 2% total solids, and if total solids is greater than 2% residuals shall be diluted to less than 2% with unchlorinated effluent at the start of the test. Several total solid values are greater than 2% in the lab analysis provided for June 10, 2021. Additional information was provided on May 12, 2022, that demonstrated effluent was theoretically diluted to less than 2% total solids. Please be advised that a 30- day bench scale test completed with effluent with greater than 2% total solids may not have accurate results. If this occurs again another vector reduction alternative may need to be completed to verify vector reduction requirements are being met. 2. Plant Available Nitrogen (PAN) for fescue hay for NC-DV-08-07 was listed as 198 Ib/ac, the North Carolina State University Realistic Yield Expectation database recommends 188 Ib/ac. 3. PAN for NC-DV-08-09 was also listed as 198 Ib/ac. The correct recommendation is 188 Ib/ac. GDE NORTH CAROLINA ' D. mmm�� .ore�nt 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 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(a�ncdenr.gov. Sincerely, DocuSigned by: LOA. T. SMk- '-145B49E225C94EA Lon T. Snider, Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDEQ-WSRO Enc: Inspection Report Cc: Brent Collins, EMA Resources, Inc. (electronic copy) Davie County Environmental Health (electronic copy) Laserfiche File WQ0010583 WSRO Electronic Files DE NORTH CAROLINA gaparMeM of Environment,/quay North Carolina Department of Environmental Quality I Division of Water Resources Winston-Salem Regional Office 1450 W. Hanes Mill Rd, Suite 300 I Raleigh, North Carolina 27105 336.776.9800 Compliance Inspection Report Permit: WQ0010583 Effective: 07/02/21 Expiration: 04/30/22 Owner : Davie County SOC: Effective: Expiration: Facility: Davie County RLAP County: Davie Hwy 801 S Region: Winston-Salem Contact Person: Brent M Collins Directions to Facility: Cooleemee NC 27014 Title: Phone: 336-751-1441 System Classifications: LA, Primary ORC: Certification: Phone: Secondary ORC(s): On -Site Representative(s): Related Permits: NC0024872 Davie County - Cooleemee WWTP Inspection Date: 04/19/2022 Entry Time 10:OOAM Exit Time: 01:OOPM Primary Inspector: Caitlin Caudle Phone: 336-776-9699 Secondary Inspector(s): Reason for Inspection: Routine Inspection Type: Annual Report Review Permit Inspection Type: Land Application of Residual Solids (503) Facility Status: Compliant ❑ Not Compliant Question Areas: Miscellaneous Questions Record Keeping Sampling II Pathogen and Vector Attraction (See attachment summary) Page 1 of 4 Permit: WQ0010583 Owner - Facility: Davie County Inspection Date: 04/19/2022 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. The following item of concern was noted: 1. The Pathogen and Vector Attraction Reduction Form for June 10, 2021, indicated that 30-day Bench Scale Test was being used in meet vector reduction requirements. Per Permit Condition 11.7 "biological residuals ... that are distributed shall meet one of the vector attraction reduction alternatives in 15A NCAC 02T .1107(a)." 15A NCAC 02T .1107(a)(3) describes 30-day Bench Scale Test as being completed with residuals with less than 2% total solids, and if total solids is greater than 2% residuals shall be diluted to less than 2% with unchlorinated effluent at the start of the test. Several total solid values are greater than 2% in the lab analysis provided for June 10, 2021. Additional information was provided on May 12, 2022, that demonstrated effluent was theoretically diluted to less than 2% total solids. Please be advised that a 30-day bench scale test completed with effluent with greater than 2% total solids may not have accurate results. If this occurs again another vector reduction alternative may need to be completed to verify vector reduction requirements are being met. 2. Plant Available Nitrogen (PAN) for fescue hay for NC-DV-08-07 was listed as 198 Ib/ac, the North Carolina State University Realistic Yield Expectation database recommends 188 Ib/ac. 3. PAN for NC-DV-08-09 was also listed as 198 Ib/ac. The correct recommendation is 188 Ib/ac. Other observations: • 1,525.97 tons were applied, requiring quarterly sampling events. Sampling was completed in April, June, July, and August. Application events occurred in April, June, July, August and December. • DV-08-07 had material from Davidson Water material applied. • DV-08-09 had material from Davidson Water and Piedmont Water applied. • Lead was misreported on the Annual Residual Sampling Summary Form for the April 26, 2021, sampling event. Lead is listed as 3.37 mg/L on the form and reported as <3.67 mg/L on the analysis result. Page 2 of 4 Permit: WQ0010583 Owner - Facility: Davie County Inspection Date: 04/19/2022 Inspection Type : Annual Report Review Reason for Visit: Routine Type Distribution and Marketing Land Application 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? Yes No NA NE • Yes No NA NE ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ • • ❑ ❑ ❑ • ❑ ❑ ❑ • ▪ ❑ ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ ❑ • • ❑ ❑ ❑ • ▪ ❑ ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ • ❑ ❑ ▪ ❑ ❑ ❑ Comment: There was a complaint in the last 12 months. No violations were found from the investigation. 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 • ❑ ❑ ❑ • ❑ ❑ ❑ • O 000 O 000 O 000 Page 3 of 4 Permit: WQ0010583 Owner - Facility: Davie County Inspection Date: 04/19/2022 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: Sampling Describe sampling: Is sampling adequate? Is sampling representative? Comment: Yes No NA NE • ❑ ❑ ❑ • ❑ ❑ ❑ Page 4 of 4