Section 725.29 - EPA acknowledgement of receipt of submission(a) EPA will acknowledge receipt of each submission by sending a letter via CDX or U.S. mail to the submitter that identifies the number assigned to each MCAN or exemption request and the date on which the review period begins. The review period will begin on the date the MCAN or exemption request is received by the Office of Pollution Prevention and Toxics Document Control Officer.(b) The acknowledgement does not constitute a finding by EPA that the submission is in compliance with this part.62 FR 17932, Apr. 11, 1997, as amended at 75 FR 788 , Jan. 6, 2010