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USEPA Proposes Updated Rule for the Analysis of Effluent Under the Clean Water Act


The U.S. Environmental Protection Agency (USEPA) is accepting comments about proposed updates to the analytical procedures that are currently used by cities and industries to test wastewater and other environmental samples as required by regulations under the Clean Water Act.

The proposed changes include new or revised USEPA methods of analyzing the chemical, physical, and biological components of wastewater, as well as methods published by voluntary consensus standard bodies, such as ASTM International and the Standard Methods Committee. USEPA also proposes to add certain methods reviewed under the alternate test procedures (ATP) program and to make changes to clarify the procedures for USEPA approval of nationwide and limited use ATPs. Amendments to the procedure for determination of the method detection limit are also under consideration.

USEPA says the updates would provide increased flexibility to the regulated community, improve data quality, and update the methods to keep current with technology advances. The updates would also clarify the process for requesting limited use or nationwide review of ATPs, address laboratory contamination issues related to the method detection limit (MDL), and better account for intra-laboratory variability.

To access additional information from USEPA, click here. Comments on the proposed rule will be accepted by the Federal Register through April 20, 2015.

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