On September 4, 2013, EPA published the proposed rule “Water Quality Standards Regulatory Clarifications” in the Federal Register. In the proposed rulemaking, EPA proposed changes to the federal water quality standards (WQS) regulation in 40 CFR Part 131.
The proposed rule addresses the following key program areas:
- Administrator’s determinations that new or revised WQS are necessary,
- designated uses,
- triennial reviews,
- variances to WQS, and
- compliance schedule authorizing provisions.
The original comment deadline was December 3, 2013. EPA has extended the comment period for 30 days. Written comments must now be received by January 2, 2014.