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Jim and Bob, Eric ran the Lead Modlel this morning a9 requested by you, Jim, on Friday. The model was run using the updated blood lead reference value of 5 ug/dl as well as all of the other updated input parameters. These are the same updated parameters as used by DHHS in conducting their risk assessment for Flint drinking water Le, the drinking water ingestion rates, maternal blood lead concentration and the Michigan-spectfic outdoor air concentration of 0.01 ug/m°. Assuming a drinking water lead concentration of G, the resulting acceptable soil lead concentration is 195 ppm. Let us know if you have any further questions. Toxicology Unit Manager Remediation and Redevelopment Division Department of Environmental Quality P.O. Box 30426 Lansing, Ml 48909-7926 Phone #. 517-284-5098 flagac@rnichigan gov

By June 10th please provide me with any broad issues that you would like the Director to bring up at the Region 5 all states meeting. Roger, please provide a summary on where we are with BUls and the future of further delistings of AOCs. Sent from my iPhone Begin forwarded message: xxxEND_PAGE:deq04_b542_4951_4954_1

FYI Sent from my iPhone Begin forwarded message:

Importance: High Follow Up Flag: Follow up Flag Status: Flagged FYI as well.