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Home My WebLink AboutWQ0035207_2021 Residuals Annual Report Review_20220502ROY COOPER Governor ELIZABETH S. BISER Secretary RICHARD E. ROGERS, JR. Director NORTH CAROLINA Environmental Quality May 2, 2022 Robert N. Roth, Technical Services Manager Synagro Central, LLC 284 Boger Road Mocksville, NC 27028 SUBJECT: 2021 Residuals Annual Report Review Synagro Central, Distribution of Class A Residuals Permit No. WQ0035207 Davie County Dear Mr. Roth: Division of Water Resources staff Caitlin Caudle completed a review of the 2021 Residuals Annual Report. This review mostly reflected compliance with the subject permit. The following item of concern was noted: A. Elizabeth City WTP produced both cake and liquid residuals. Staff recommend that in the future both cake and liquid residuals be sampled at frequencies based on the volume distributed per Attachment A. Cake and liquid residuals will have different metals and nutrient content and should be sampled separately to have an accurate representation of all material distributed. Please notify the Winston Salem Regional Office of the next planned application event so a compliance inspection may be scheduled. 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, 1-DocuSigned by: L-on. l . Jn lAts '-145B49E225C94EA Lon T. Snider, Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDEQ-WSRO Enc: Inspection Report Cc: Laserfiche File WQ0035207 FRO WQROS (electronic copy) MRO WQROS (electronic copy) RRO WQROS (electronic copy) WiRO WQROS (electronic copy) WSRO Electronic Files GDE NORTH C OLI JA ' umm m�� 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: WQ0035207 Effective: 03/10/21 Expiration: 01/01/27 Owner : Synagro Central LLC SOC: County: Davie Region: Winston-Salem Effective: Contact Person: Gregory T Flory Directions to Facility: Expiration: Facility: Synagro Central DCAR Title: Executive Director Phone: 336-498-5510 System Classifications: Primary ORC: Certification: Phone: Secondary ORC(s): On -Site Representative(s): Related Permits: NCG590017 City of Greensboro - Lake Townsend WTP NC0046345 City of Reidsville - Reidsville WTP NC0075701 City of Albemarle - Tuckertown WTP NC0087866 Piedmont Triad Regional Water Authority - John F. Kime WTP NC0057533 Brunswick County - Hood Creek WTP Inspection Date: 04/20/2022 Entry Time 08:OOAM 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 Sampling (See attachment summary) Page 1 of 4 Permit: WQ0035207 Owner - Facility: Synagro Central LLC Inspection Date: 04/20/2022 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: A. Elizabeth City WTP produced both cake and liquid residuals. Staff recommend that in the future both cake and liquid residuals be sampled at frequencies based on the volume produced per Attachment A Cake and liquid residuals will have different metals and nutrient content and should be sampled separately to have an accurate representation of all material distributed. A routine compliance inspection will be scheduled this calendar year. Additional information was requested on 4/22/2022 and provided on 4/27/2022. Other observations: • 1781.20 acres were utilized in the 2021 calendar year. • 3,430.54 tons were applied or distributed in the 2021 calendar year. • Eleven sources were utilized in the 2021 calendar year. o Brunswick County Hood Creek WTP — 431.55 tons ▪ Required quarterly sampling. Sampled on 1/11, 4/18, 7/21, and 10/12. ▪ 578.9 acres were utilized. • Applications occurred January to October in Brunswick and Pender Counties. o City of Durham Brown WTP — 593.31 tons ▪ Required quarterly sampling. Sampled on 2/4, 5/13, 9/23, and 10/31. pH on 2/4, 5/13, and 9/23 were all below 6. • 68.3 acres were utilized. • Applications occurred in August and December in Person County. o City of Graham Mebane WTP —144.14 tons • Required annual sampling. Sampled on 2/4. • 50.4 acres were utilized. • Applications occurred in June in Alamance County. o Tuckertown WTP — 261.35 tons ▪ Required annual sampling. Sampled on 2/2. • 177.5 acres were utilized. • Applications occurred in April, November, and December in Rowan and Stanly Counties. o Pender County Utilities Pender County WTP — 70.71 tons • Required annual sampling. Sampled on 9/1. pH was 5. • 57.4 acres were utilized. • Applications occurred in November and December Columbus County. o Town of Pittsboro WTP — 93.35 tons ▪ Required annual sampling. Sampled on 3/15. pH was 5.1. ▪ SAR was reported as 0.0945, staff calculated SAR as 0.945. • 133.1 acres were utilized. • Applications occurred in April, July and August in Chatham County. o Elizabeth City WTP — 771.15 tons • Based on total dry tons, quarterly sampling was required. 366.33 tons of cake residuals were distributed to a single individual. 404.83 tons of liquid residuals were applied. Cake residuals were sampled on 3/5, 6/7, 8/2, 9/20, and 11/21. Liquid residuals were sampled 1/25, 6/7, and 9/20. • PAN for cake residuals on 6/7 was reported as 779 mg/kg, staff calculated PAN as 736 mg/kg. PAN for cake residuals on 8/2 was reported as 934 mg/kg, staff calculated PAN as 896 mg/kg. PAN for liquid residuals on 6/7 was reported as 4362 mg/kg. Staff calculations show PAN as 3646 mg/kg with a mineralization rate of 0.2. • SAR for liquid residuals were reported as 0.0959, staff calculated SAR as 0.0563. • Liquid residuals were applied in May, September, and October in Chowan and Pasquotank Counties. Cake residuals were distributed March through December. Page 2 of 4 Permit: WQ0035207 Owner - Facility: Synagro Central LLC Inspection Date: 04/20/2022 Inspection Type : Annual Report Review Reason for Visit: Routine 1 231.1 acres were utilized to spread liquid residuals. o Town of Siler City WTP — 142.14 tons ▪ Required annual sampling. Sampled on 5/5. 1 120.3 acres were utilized. 1 Applications occurred in May and November in Chatham County. o South Fork Industries — Maiden Plant — 124.46 tons ▪ Required Annual sampling. Sampled on 5/5. ▪ 64.4 acres were utilized. 1 Applications occurred in October Catawba County. o SJWD Duncan WTP — 146.13 tons 1 Required annual sampling. Sampled on 10/5. 1 82.4 acres were utilized. 1 Applications occurred in October in Polk County. o Roanoke River Service Authority WTP — 651.86 tons ▪ Required quarterly sampling. Sampled on 1/20, 4/6, and twice on 4/26. • 236.6 acres were utilized. 1 Applications occurred in March and April in Warren County. Page 3 of 4 Permit: WQ0035207 Owner - Facility: Synagro Central LLC Inspection Date: 04/20/2022 Inspection Type : Annual Report Review Reason for Visit: Routine Tvpe 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: Sampling Describe sampling: Is sampling adequate? Is sampling representative? Comment: Please see summary for additional comment. Yes No NA NE El • Yes No NA NE ❑ ❑ • ❑ ❑ ❑ • ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ • ❑ ❑ ❑ ❑ ❑ • ❑ ❑ ❑ • ❑ Yes No NA NE Page 4 of 4