Stephanie Johnson

Hi Pat, Here's information on DWSD's corrosion control program. I've verified this at the Northeast plant, Springwells and Southwest so far. Let me know if you need anything else. aoe Original Message-

Hi Stephanie, xxxEND_PAGE:deq17_b453_2630_2647_01 DWSD uses Phosphoric Acid 75% (Orthophosphoric Acid) at a dosage of 1ppm for corrossion control. The supplier is PVS Nolwood Chemicals, Inc. Please see attached safety Data Sheet for Phosphoric acid. Thank you Annie C Philip Operations Team Leader Northeast Water Treatment Plant 11000 East Eight Mile Rd. Detroit, MI. 48205 (313)-245-1605 (office) City of Detroit Mike Duggan, Mayor oe Forwarded Message -----

Hi Stephanie, DWSD uses Phosphoric Acid 75% (Orthophosphoric Acid) at a dosage of 1ppm for corrossion control. The supplier is PVS Nolwood Chemicals, Inc. Please see attached safety Data Sheet for Phosphoric acid. Thank you xxxEND_PAGE:deq04_b300_3630_4070_134 Annie C Philip Operations Team Leader Northeast Water Treatment Plant 11000 East Eight Mile Rd. Detroit, Mi. 48205 (313)-245-1605 (office) (313)-999-3401 (cell) [email protected] City of Detroit Mike Duggan, Mayor eee Forwarded Message -----