On June 7, 2017, ECRCO issued a Closure Letter for Administrative Complaint Nos. 03R-07-R9, 10R-07-R9, and 01R-11-R9, involving the Maricopa County Air Quality Department (MCAQD). The complaints alleged generally that MCAQD violated Title VI of the Civil Rights Act of 1964, and the EPA’s nondiscrimination regulation found at 40 Code of Federal Regulations (C.F.R.) Part 7.You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.