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Home My WebLink AboutWQ0036561_Residual Annual Report 2019_20200615ROY COOPER Governor MICHAEL S. REGAN Secretary S. DANIEL SMITH Director Mr. Alan Johnson, Director NORTH CAROLINA Environmental Quality June 15, 2020 Division of Water and Wastewater Management City of Danville 279 Park Avenue Danville, Virginia 24541 SUBJECT: 2019 Annual Report Review City of Danville Residual Land Application Program Permit No. WQ0036561 Caswell County Dear Mr. Johnson: The Division of Water Resources (DWR) acknowledges receipt of your 2019 Annual Report for the subject permit. A review of this report conducted by DWR staff person Jim Gonsiewski reflects compliance with Permit Number No. WQ0036561. However, the following concern was noted: The 2019 soil analyses indicate that two land application fields have high copper indices. Field NC- CS-06-03 had a copper index of 3,010 while field NC-CS-07-02 had a copper index of 2,240. Copper indices between 2,000 and 3,000 are considered by the North Carolina Department of Agriculture (NCDA) to be a concern and should be monitored. The NCDA lists 3,000 as the critical level for copper indices. It is strongly recommended that additional soil sampling occur on field NC-CS-06-03 prior to any future land application events to ensure copper indices are not elevated. Care should be taken when sampling soils to ensure representative composite samples are collected at appropriate sample depths. If copper levels continue to be elevated (3,000 or greater), it is recommended that land application activities should be terminated on this field until it can be determined that copper levels are below 3,000. The NCDA considers an index of 3,000 to be the critical toxic level for most "non -sensitive plants." Impacts to crops resulting from metal toxicity may result in reduced uptake of residuals constituents (e.g. nutrients) and could potentially lead to surface and groundwater contamination. �Apl North Carolina Department of Environmental Quality I Division of Water Resources Winston-Salem Regional Office [ 450 West Hanes Mill Road, Suite 300 I Winston-Salem, North Carolina 27105 NOh r H C ue _Way ��^ma^��u�•i` r 336.776.9800 If you or your staff have any questions concerning this letter, please contact me or Jim Gonsiewski at (336) 776-9800 or via email at jim.gonsiewskigncdenr.gov. Sincerely, [DocuSiiggned by* L-4., l 5m&r Lon TB ?dtfA... Regional Supervisor Water Quality Regional Operations Section Division of Water Resources, NCDEQ — WSRO cc: Caswell County Environmental Health (Electronic Copy) Brent Collins — EMA Resources, Inc. (Electronic Copy) WSRO Electronic Files Laserfiche Files Compliance Inspection Report Permit: WQ0036561 Effective: 08/31/18 Expiration: 07/31/23 Owner: City of Danville SOC: Effective: Expiration: Facility: City of Danville RLAP County: Out of State 229 Northside Dr Region: Central Danville VA 24540 Contact Person: Charles Richard Overby Title: Phone: 434-203-8098 Directions to Facility: System Classifications: LA, Primary ORC: Brent M Collins Secondary ORC(s): On -Site Representative(s): Related Permits: Inspection Date: 06/05/2020 Entry Time 09:OOAM Primary Inspector: Jim J Gonsiewski Secondary Inspector(s): Certification: 27651 Phone:336-751-1441 Exit Time: 01:OOPM Phone: 336-776-9704 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 Treatment Sampling Pathogen and Vector Attraction Wells (See attachment summary) Page 1 of 4 Permit: WQ0036561 Owner - Facility: City of Danville Inspection Date: 06/05/2020 Inspection Type: Annual Report Review Reason for Visit: Routine Inspection Summary: The Division of Water Resources (DWR) received the 2019 Annual Report for the subject permit. A review of this report conducted by DWR staff person Jim Gonsiewski reflects compliance with Permit Number No. WQ0036561. The 2019 soil analyses indicate that two land application fields have high copper indices. Field NC-CS-06-03 had a copper index of 3,010 while field NC-CS-07-02 had a copper index of 2,240. Copper indices between 2,000 and 3,000 are considered by the North Carolina Department of Agriculture (NCDA) to be a concern and should be monitored. The NCDA lists 3,000 as the critical level for copper indices. It is strongly recommended that additional soil sampling occur on field NC-CS-06-03 prior to any future land application events to ensure copper indices are not elevated. Care should be taken when sampling soils to ensure representative composite samples are collected at appropriate sample depths. If copper levels continue to be elevated (3,000 or greater), it is recommended that land application activities should be terminated on this field until it can be determined that copper levels are below 3,000. The NCDA considers an index of 3,000 to be the critical toxic level for most "non -sensitive plants." Impacts to crops resulting from metal toxicity may result in reduced uptake of residuals constituents (e.g. nutrients) and could potentially lead to surface and groundwater contamination. A total of 758.35 dry tons of residual were spread on 11 fields. Page 2 of 4 Permit: WQ0036561 Owner - Facility: City of Danville Inspection Date: 06/05/2020 Inspection Type: Annual Report Review Reason for Visit: Routine Type Yes No NA NE Land Application ❑ Distribution and Marketing ❑ 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) ❑ ❑ ❑ 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 0 ❑ ❑ ❑ 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 ❑ Comment: Sampling Yes No NA NE Describe sampling: Residual, TCLP , and soil samples. Is sampling adequate? ❑ ❑ ❑ Is sampling representative? ❑ ❑ ❑ Page 3 of 4 Permit: WQ0036561 Owner - Facility: City of Danville Inspection Date: 06/05/2020 Inspection Type: Annual Report Review Reason for Visit: Routine Comment: Page 4 of 4