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HomeMy WebLinkAboutDEQ-CFW_00019708u. W-1 rcr Rr'so1R-n:: June 14, 2016 Dr. Mina Shehee, Supervisor Medical Evaluation & Risk Assessment Unit Occupational & Environmental Epidemiology Branch Division of Public Health Dept. of Health and Human Services 1912 Mail Service Center Raleigh NC 27699-1912 Mr. Michael Scott, Director NC Division of Waste Management Dept. of Environmental Quality 1646 Mail Service Center Raleigh, NC27699-1646 Dear Dr. Shehee and Mr. Scott: PAT MCCRORY DONALD R. VAN DER VAART S. JAY ZIMMERMAN The Division of Water Resources (DWR) has initiated a review of the existing Interim. Maximum Allowable Concentrations (IMACs). DWR is reviewing the IMACs in accordance with Rule I -5A NCAC 02L,0202 and the SOP for Reviewing Groundwater Standards that was mutually developed by our respective agencies. DWR is reviewing the IMIACs so that they may be presented to the Environmental Management Commission for consideration of adoption as North Carolina groundwater standards through Lhe formal rulemaking process. DWR plans to submit the IMACs to your respective divisions in groups of 5-10 chemicals to facilitate the secondary reviews. In accordance with the SOP dated January 20, 2011 (attached), DWR requests DPH and DWM review the enclosed supporting documentation and provide comments to DWR on the proposed 021, standards revisions for the following substances: • Acetoclilor (IMAC unchanged from 2 0 10) • Acetochlor ESA (IMAC established 2010, changes proposed) • Acetochlor OXA (IMAC established 2010, changes proposed) • Acetopherione (IMAC unchanged from 2011) • Acrolein (IMAC unchanged from 2010) DWR has enclosed its documentation for groundwater standard calculation sheets and summary documents. The groundwater standard calculation sheet is now condensed to a single page that includes identification of the critical health effect, inclusion of the estimated practical S13w of North Carolina I Fnvimnruonfai QuaMy i water Re'sairces 1611 Mail smk:e CtAter I Raleigh, NoTth Carolina 2'699-16 11 919 -107 9000 DEQ-CFW-00019708 quantitation limit (PQL), a history section and references for each quantitative value. The groundwater summary document includes the regulatory criteria used to determine the proposed standards as well as references and links to documents and infolmation used to develop the proposals. We welcome your input, on these documents. Please direct inquiries and comments on these proposals before July 14, 2016 to Dr. Candace Prusiewicz at candace. rusiewiczLiOnedenr.gov or 919-707-9022. Thank you for your time and consideration. We look forward to receiving your comments. Sincerely, Linda Culpepper Deputy Director Enclosures cc: Jay Zimmerman, Director DWQ Jon Rasgaard Tom Fransen Jeff Manning Connie Brower Chris Ventaloro Candace Prusiewicz DEQ-CFW-00019709