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Date: Wednesday, December 16, 2015 6:10:40 PM Please do not respond to this request —- management will do so.

We have updated the residential lead direct contact criterion to 200 ppm in soil. This is a draft value which is subject to change. The criterion is generated by the EPA Lead Biokinetic Uptake Model which considers exposure via drinking water, soil, ambient air, and diet. The associated drinking water concentration is 1 ppb. Does the use of a Part 201 drinking water criterion of 1 ppb present you with any heart burn? Thanks for your input! Christine Flage Toxicology Unit Manager Remediation and Redevelopment Division Department of Environmental Quality P.O. Box 30426 Lansing, MI 48909-7926 Phone #: 517-284-5098 [email protected] xxxEND_PAGE:deq02_b297_3502_3502_1

Date: Wednesday, December 16, 2015 5:18:09 PM We have updated the residential lead direct contact criterion to 200 ppm in soil. This is a draft value which is subject to change. The criterion is generated by the EPA Lead Biokinetic Uptake Model which considers exposure via drinking water, soil, ambient air, and diet. The associated drinking water concentration is 1 ppb. Does the use of a Part 201 drinking water criterion of 1 ppb present you with any heart burn? Thanks for your input! Christine Flage Toxicology Unit Manager Remediation and Redevelopment Division Department of Environmental Quality P.O. Box 30426 Lansing, MI 48909-7926 Phone #: 517-284-5098 [email protected] xxxEND_PAGE:deq02_b054_2116_2116_1