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FW: Draft 90th percentile letter

Aftiached is our draft letter to Flint regarding their lead and copper rnonitering results and 90" percentile determination for ther initial 2 sh-maonih LCR monitoring periods after the city converted from Detroil’s conventional treatment of Lake Huran to softening of the Flint River. This letler includes our directions for the ensuing steps and our recommendations as far as corrosion control optimization. Please provide any comments you may have by the close of business on Friday, August 14". We realize this response time is short, but we intend fo deliver this letter to the city on Monday, August 17". Thariks, Richard Richard Benzie, PLE, Chief Field Operations Section Office of Drinking Water and Municipal Assistance, MDEQ 517-284-6512 xxxEND_PAGE:deq21_b562_1593_1594_1