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HomeMy WebLinkAboutNCG060156_Tier II Response_20230117 SAVAw 901 W Legacy Center Way �/..=IA Midvale, UT 84047 (800) 827-4439 www.savageservices.com January 10, 2023 11 � t� North Carolina Department of Environmental Quality C`�G Mooresville Reg ional Office 610 East Center Avenue, Suite 301 Mooresville, NC28115 yep° °Fy RE: Benchmark Exceedance Notification To whom it may concern, Savage Services, the parent company of Bartlett Milling Company, L.P. (Bartlett), is assisting Bartlett in notifying the North Carolina Department of Environmental Quality(DEQ) of exceedances of parameter benchmark levels listed in permit NCG060156.This notification is intended to be a Tier Two Response which includes reporting any two consecutive sampling results in a row for the same parameter that are above the benchmark value at an outfall. Since the issuance of the permit in July 2021,the following parameters have exceeded the benchmark values: Chemical Oxygen Total Suspended Oil &Grease Demand (COD) Solids (TSS) (mg/L) (mg/L) (mg/L) Benchmark 120 100 15 Date Sampled 11/22/2021 839 ----- ----- 5/23/2022 651 1910 ----- 12/22/2022 ----- 142 22.4 Note: Sample results not shown in the table were below benchmark levels. The sample results for the latest sample collected (12/22/2022)were received by Bartlett on 1/4/2023. Upon reviewing the latest sample results, Bartlett immediately replaced all of the storm drain filters that are installed below each of the grates onsite. New filters have also been ordered that will be installed on top of each grate as an additional pollution prevention measure. In the past, Bartlett has applied a significant amount of gravel (16 truckloads)to the facility in an attempt to cover exposed sediment and reduce the TSS levels in stormwater discharged from the facility. Bartlett has approved and is awaiting the addition of concrete to areas in front of the maintenance shop and is acquiring additional quotes to add concrete to the facility to help improve stormwater quality if needed based on future test results. Bartlett understands that monthly monitoring is now required at the outfall until three samples in a row are below the benchmark value or are inside the benchmark range. If you have any questions about this notification, please do not hesitate to reach out to Landon Bott at landonbott@savageservices.com or(801)722-9897. Thank you, Landon Bott Senior Environmental Manager