US EPA has posted a Draft Part 75 Emissions Monitoring Policy Manual. The draft addresses January 24, 2008 amendments to 40 CFR Part 75 and the conversion of the Clean Air Markets Division data systems to the Emissions Collection and Monitoring Plan System (ECMPS).
Draft Part 75 Emissions Monitoring Policy Manual. July 10, 2009 (pdf, 364pp., 130MB)
For more information, see the Part 75 Emissions Monitoring Policy Manual webpage.