Methodology for Iowa’s 2004 water quality assessment, listing, and reporting pursuant to Sections 305(b) and 303(d) of the federal Clean Water Act.

(2005) Methodology for Iowa’s 2004 water quality assessment, listing, and reporting pursuant to Sections 305(b) and 303(d) of the federal Clean Water Act. Natural Resources, Department of

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Abstract

This methodology attempts to incorporate recommendations in U.S. EPA’s July 2003 guidance for the 2004 assessment, listing, and reporting requirements pursuant to Sections 303(d) and 305(b) of the federal Clean Water Act (Sutfin 2003, U.S. EPA 2003). This EPA guidance establishes the formats for an “integrated report” that satisfies the listing requirements of Section 303(d) and the reporting requirements of Sections 305(b) and 314 of the Clean Water Act (CWA). This EPA guidance replaces all previous guidance pertaining to Sections 305(b) and 303(d) except EPA’s Consolidated Assessment and Listing Methodology (CALM) (U.S. EPA 2002). This methodology meets the requirements of CWA, Section 303(d)(1)(a) and 40 CFR Section 130.24 and incorporates requirements of Iowa’s “credible data” law (Attachment 1).