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Home My WebLink AboutWQ0014136_Correspondence_20130213NCDENR North Carolina Department of Environment and Natural Resources Division of Water Quality Pat McCrory Charles Wakild, P. E. John Skvarla Governor Director Secretary Mr. Barry McKinnon, Dir. Public Utilities Town of Mooresville P.O. Box 878 Mooresville, North Carolina 28115 Subject: Land Application Inspection Permit No. WQ0014136 Iredell County Dear Mr. McKinnon: February 13, 2013 Enclosed is the report for the inspection of the subject Land Application permit that was conducted on January 29, 2013. 1 would like to thank Mike Lamberth, John Ritchie and Mike Fulbright for taking the time to show me around the Mooresville Rocky River Wastewater Treatment Plant (WWTP) and Water Treatment Plant (WTP) facilities. The report indicates compliance at the time of inspection, but one area of concern is the final bay of the storage area, which receives grit vacuumed from pump stations. The retaining wall has been removed to allow for easier truck access. There is potential for these residuals (grit or liquid) to be tracked onto the road. I would recommend the wall be replaced and trucks enter from the other side, where there are measures in place to keep residuals contained. Also, the recent addition of the dryer equipment to the WWTP and subsequent production of class "A" material will require a modification to the current permit (set to expire June 30, 2018) and per our phone conversations a second, separate permit should the town decide to market the class "A" material. No residuals were land applied in 2012. All material was dewatered and sent to the landfill. Newly produced class "A" material will be sent to Granville Farms for distribution under their permit. Residuals could also continue to be land applied under your existing permit, to approved fields (attachment "B"), but would have to meet the analytical requirements and conditions noted under IV. Monitoring and Reporting Requirements, until you acquire the modification for the class "A" material. Division of Water Quality 1 Aquifer Protection Section 1 Mooresville Regional Office 610 East Center Avenue, Suite 301. Mooresville, North Carolina 28115 Phone: 704.663-1699 i Fax: 704-663-60401 GUStOnter Service: 1-877.623-6748 Internet: www.iicwaterqualiity.org NorthCarohna An Fqual Opportunity', AffirmAlive Action Fmpinyer The MRO also toured the WTP(s) to verify residuals handling from those facilities. Currently the material is piped to the head of the WWTP and treated through that process, thus the WTPs are not included on attachment A of this permit. The attached report should be self-explanatory, however, if you have any questions, please contact me at (704) 663-1699. Sincerely, Maria Schutte Environmental Specialist Attachment cc: Mr. Mike Lambert, Town of Mooresville (Email) Mr. Mike Fulbright, Town of Mooresville (Email —w/o attachment) Chonticha McDaniel, Residuals Management, CO-LAU (Email) State of North Carolina Department of Environment and Natural Resources Division of Water Quality Pat McCrory, Governor John Skvarla, Secretary Chuck Wakild, P.E., Director AT4 NCDENFt NON -DISCHARGE COMPLIANCE INSPECTION GENERAL INFORMATION City/Town/Owner: Mooresville Permit No.: W 0014136 _Issuance Date: July 6, 2009 Permittee Contact: Mike Lamberth ORC Name: Cliff Webb - Cert. #13282 BU ORC Name: County: Iredell NPDES# NCO046728 New Extended Exp. Date: June 30, 2018 Telephone No.: 704/662-8470 Telephone No.: 704/662-8470 Telephone No.: Reason for Inspection X ROUTINE COMPLAINT FOLLOW-UP OTHER Type of inspection Collection System Spray Irrigation X Sludge Other Inspection Date: Januaa 29, 2013 Inspection Summa : additional comments may be included on attached pages) The Town is permitted to land apply 650 dry tons/year of sludge from the Mooresville WWTP. Mooresville has not land applied any sludge since 2009, as most sludge is dewatered (belt filter press) and sent to the BFI landfill. But, some is now being processed via the dryer and is then delivered to Granville Farms for distribution under their permit #WQ0033587. Alum residuals from the water treatment plants are sent to the head of the WWTP, treated as wastewater, and ultimately disposed as part of WWTP residuals program. All areas of the plant were neat and clean in appearance. No odors or vectors were noticed in any of the residuals areas: sludge dewatering, dryer or storage area. The final bay of the storage area is used for grit from pump trucks. The retaining wall has been removed to allow for easier access. This area was in compliance at the time of inspection, but there is potential for these residuals (grit or liquid) to be tracked onto the road. Recommend wall be replaced and trucks enter from other side — where there are measures in place to keep residuals contained. Is a follow-up inspection necessary `yes X no Inspector(s) Maria Schutte / Env. Specialist Telephone No. 704/663-1699 Fax No. 704/663-6040 Date of Inspection January 29 2013 Residuals Inspection WQ0014136 Mooresville, Iredell County Type of Residual Y-yes N-no N/E-not evaluated N/A -not applicable X Land Application (class B) Record Keeping Y/N (indicate whether available for review) Y Copy of current permit available at residual generating site N/E Current metals and nutrient analysis (see permit for frequency) N/E CLP analysis N/E SSFA (Standard Soil Fertility Analysis) N/E Nutrient and metals loading calculations (to determine most limiting parameter) YTD N/E Hauling records (# gal. and/or tons hauled during calendar year to date) N/E Field loading records N/E Field site maps and information N/E Records of lime purchased N/E Pathogen & Vector Attraction Reduction pg 2 Comments: The town has not land applied since 2009. They have been dewatering sludge and tranWorting to the landfill. This process will continue as needed. The plant has also added a new sludge drier. Th_e class A" material generated will be handled by Granville Farms for marketing; and distribution under their permit. Pathogen Reduction Method Previously used: Alternative 1: Monitoring of indicator organisms, but will be using the sludge dryer to produce class "A" material. Vector Attraction Reduction Previously used: _Option 1: Volatile solids reduction by 38% (mass balance method), but will be using the sludge drier to produce class "A" material. Comments: Treatment (check treatment type(s) used) X Aerobic digestion anaerobic digestion Alkaline Stabilization Lime X other -describe: New Sludge Dryer Transport No land ggplication was taking lace during this ins ection. Spill control plan in transport vehicle? N/E Does transport vehicle appear to be maintained? N/E Storage Number of days/weeks/months of storage $h +/- days Comments: Above -around aerated tank. Old drying beds have been converted for dewatered sludge storage. Currently, some sludge is dewatered and taken to the landfill and some is dried class "A" material and sent to Granville Farms for distribution. The final bay of the storage area is used for grit &om12ump trucks. The retaining wall has been removed to allow for easier access. This area was in compliance at the time of inspection, but there is potential for these residuals (grit or liguid� to be tracked onto the road. Recommend wall be replaced and trucks enter from other side - where there are measures in place to keep residuals contained. Residuals Inspection WQ0014136 Mooresville, Iredell County Sampling Describe Sampling: N/A — there have been no land application events since 2009. Is sampling adequate? N/E Is sampling representative? N/E Field Sites end use for class B biosolids No land application was taking place during this inspection. Field identification: Permit on site during application Spill plan on site Buffers adequate _ Cover crop specified in permit Documented exceedances of PAN limits _ Site condition adequate Signs of runoff / ponding Rain Gauge on site during application Are there any limiting slopes on fields? 10 % for surface application 18% for subsurface application Monitoriniz wells) YIN: N If yes, location of well(s): see comment below. pg 3 Comment: There are no wells for the land avr)lication vrogram; however, groundwater monitoring wells are located at the old mono al site Lod 'acent to the WWTP faciliW for monitorin of the old mono it area. Mooresville continues to reclaim areas of the old mono d area by removing buried sludge and sending it to the BFI landfill. Visited MW3 and reauested Mike Lamherth email an update to Pe,-2v Finlev WRO APS) with roposed MW locations — prior to construction. Odors/vectors No land application was taking place during this inspection. Describe any nuisance conditions and any corrective actions needed. None Detected Odors present No Vectors present No