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RE: Attached -- Task Force Comments on Residential Sampling Protocol

Attached for your review is EBL water protocol with revisions made in response to EPA comments 2 through 8. Regarding comment #1: some of the issues raised by EPA will be addressed by the GCHD nurse case managers (e.g., filter maintenance). Other issues are difficult to address in the context of the protocol. For example, the timing of exposure relative to an elevated blood test and subsequent EBL investigation will vary between children and will be difficult to identify in most cases. In addition, it’s unlikely that most Flint homes would have been using a water filter prior to Oct 1, 2015. Given the limitations and the need to identify and abate relevant exposures as quickly as possible, the best we can do is measure current lead levels in unfiltered tap water as a proxy for past exposures. | need to share this with our contractors and oversight staff so the changes can be implemented. Please let me know ASAP if you have concerns. Linda

RE: Attached -- Task Force Comments on Residential Sampling Protocol

Date: Monday, December 07, 2015 10:11:16 AM Thanks Jim. | think we can make the recommended changes to the sampling steps, provided DEQ is willing to and can provide wide-mouth bottles. The response to comment #1 is somewhat complex and will vary depending on when an EBLL was reported. Does DEQ plan to respond or should HHS take the lead? Linda