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Home My WebLink AboutNC0083658_Permit Modification_20191004ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director NORTH CAROLINA Envlronmeatal Quality October 4, 2019 Paul Heim, Legal Counsel Daikin Applied Americas, Inc - Former Heatcraft Remediation Site 13600 Industrial Park Boulevard Minneapolis, MN 55441 Subject: NCO083658 Heathcraft Remediation Site Investigative Monitoring Reporting Dear Mr. Heim, You recently received a request to perform investigative monitoring for 1,4-dioxane and/or PFAS compounds in a letter from the Division dated Aug. 26, 2019. Please see the following reporting instructions for the compounds you were asked to monitor. • For 1,4-dioxane, the certified test method EPA method 624.1 should be used. Please report your data results in your Discharge Monitoring Reports (DMRs) using the parameter code 82388. In addition to submitting these results on your DMRs, please send the lab sheet results for all 3 samples to NPDES Permitting by email to Svc deq_nodes-ecomcdefir.gov by January 31, 2020. Please be sure to include your facility's NPDES Permit # in the Subject Heading of the email. For PFAS compounds, the Department of Defense compliant method "PFAS by LCMSMS Compliant with Table B-15 of QSM 5.1 or Latest Version" should be used. Please submit the lab sheet results for all three samples to NPDES by email to Svc deq_npdes-ec(d ncdelingov by January 31, 2020. Please be sure to include your facility's NPDES Permit # in the Subject Heading of the email. In addition, if you would like to submit this data with your monthly DMR, please attach the lab sheet results to the hardcopy submitted to the Division for that month. There are currently no reporting codes for these parameters. Please contact any of the following DWR NPDES Complex Permitting Unit staff members if you have any questions or concerns: Julie Grzyb 919-707-3605, Cassidy Kurtz 919-707-3613 or Nick Coco 919-707-3609 or via email (firstname.lastname@ncdenr.gov). Sincerely, iA- A. UZfer/visor NPDES Complex Permitting Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS Morella S. King, Wilmington Regional Office �FQ North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 �r►� 4 919.707.9000 ROY COOPER Governor MICHAEL S. REGAN Secretary LINDA CULPEPPER Director NORTH CAROLINA Environmental Quality August 26, 2019 Paul Heim, Legal Counsel Daikin Applied Americas, Inc - Former Heatcraft Remediation Site 13600 Industrial Park Boulevard Minneapolis, MN 55441 Subject: NCO083658 Heathcraft Remediation Site Investigative Monitoring Dear Mr. Heim, Several emerging compounds have been found in North Carolina waters, including the chemical 1,4- dioxane. Data reviewed as part of the Third Unregulated Contaminant Monitoring Rule (UCMR3) has indicated elevated concentrations for 1,4-dioxane in the Cape Fear River Basin. In addition, ambient monitoring performed by DWR's Water Sciences Section have confirmed the presence of the chemical in the Cape Fear River Basin. See ambient monitoring study reports listed under the following link: https://deg.nc.gov/about/divisions/water-resources/waterresources-data/water-sciences-home-page/ 1-4- dioxane Background 1,4-dioxane is a clear liquid that is highly miscible in water. It has historically been used as a solvent stabilizer and is currently used for a wide variety of industrial and manufacturing purposes. The compound can be found in industrial solvents, paint strippers, and varnishes and is often produced as a by-product of chemical processes to manufacture soaps, plastics, and other consumer products. The U.S. EPA has not established a maximum contaminant level for 1,4-dioxane in drinking water but has characterized it as "likely to be carcinogenic to humans" and has established a drinking water health advisory of 35 µg/L. North Carolina has a calculated human health surface water criterion with an associated estimated lifetime cancer risk of one in one million at a concentration for 1,4-dioxane of 0.35 µg/L in water supplies and 80 µg/L in all other waterbodies (15A NCAC 02B .0208). Required Actions To assess the levels of these compounds throughout the Cape Fear and to assist DWR in developing a Management Strategy to address and reduce levels of these emerging compounds, Industries permitted under the National Pollution Discharge Elimination System (NPDES) which employ processes associated with the discharge of these compounds are hereby required to perform investigative monitoring at the treatment plant effluent for 1,4-dioxane once per month for three consecutive months starting in October 2019. Such investigative actions can be required under 15A NCAC 02B .0508 (b)(2) and G.S. 143- 215.66. Samples collected should be representative of the typical wastewater discharged from your facility. Sufficiently sensitive test methods shall be used. • To locate a tab certified to perform 1,4-dioxane analysis using EPA Method 624.1, please visit https://deq.nc.gov/about/divisions/water-resources/water-resources-data/water- D_E North Carolina Department of Environmental Quality I Division of Water Resources 512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617 +�••�� 919.707.9000 scienceshome-page/laboratory-certification-branch/certified-laboratory-listings. Be sure to specify 1,4-dioxane by EPA method 624.1 when contacting the labs. The Division recommends that the lab uses sufficiently sensitive test procedures with a target Practical Quantification Level (PQL) of approximately 1 µg/L. In addition to reporting the monthly results on the facility's eDMR, please send a copy of all three monthly results to the DWR NPDES Complex Permitting Unit by January 31, 2020 at the following email address (please include the lab sheets with the test results): svc_deq_npdes-ec@ncdenr.gov. Please include your NPDES permit number in your subject heading. If your effluent samples exceed the human health surface water criteria for 1,4-dioxane pertaining to your receiving stream classification, DWR NPDES Complex Permitting Staff will evaluate the impact on the receiving stream based on your facility's discharge and receiving stream volume. If necessary, NPDES staff will contact you to develop a corrective action plan to begin reducing or eliminating 1,4-dioxane discharges from your facility. More Information The Department looks forward to working closely with you on this important public health issue. Data from the Cape Fear River Basin will be evaluated to determine next steps to reduce the discharge of 1,4- dioxane throughout the State. Please contact any of the following DWR NPDES Complex Permitting Unit staff members if you have any questions or concerns: Julie Grzyb 919-707-3605, Cassidy Kurtz 919-707-3613 or Nick Coco 919-707-3609 or via email(frrstname.lastname@ncdenr.gov). Sinc ly/, Uri peqpper, Director Division of Water Resources, NCDEQ Cc: Dana Satterwhite, WSS Julie Grzyb, NPDES Morella S. King, Wilmington Regional Office