ITEM: 9 SUBJECT: Public Hearing – Basin Plan Amendments: Recreational Standards for

Stormwater Quality Standards Task Force presented in detail the proposed recreation standards amendments to the Basin Plan. This included discussion of comments received from interested agencies and parties, including the U.S. Environmental Protection Agency, Region 9 (USEPA). In light of the USEPA comments, which were unclear and unsubstantiated, Board staff recommended that no action on the proposed amendments be taken at the March meeting. Staff recommended a delay to allow for discussion and resolution of the USEPA concerns. The Board agreed with this recommendation. Discussion of concerns regarding the proposed amendments took place on April 10, 2012. Regional Board staff and members of and consultants to the Stormwater Quality Standards Task Force met with USEPA staff and State Water Board staff. In response to this discussion, and based on further review of the proposed amendments, some changes to those amendments are now proposed. This report supplements the Basin Plan amendment documentation, dated January 12, 2012, that included a staff report, environmental analysis document and checklist, and the proposed Basin Plan amendments. The purpose of this supplemental report is to describe the changes now proposed to the amendments and the rationale for those changes. The recommended changes to the amendments are shown in the Errata Sheet attached to this report. Also attached to this report are: (1) a copy of a message from Vicky Whitney (Stat