TMDL Projects
Sulphur Creek Mercury TMDL and Basin Plan Amendment

• Final Resolution, 31 KB, PDF (PDF info)
• Final Staff Report, 998 KB, PDF (PDF info)
• Approval by USEPA - 4 September 2009, 1.88 MB*, PDF (PDF info)

This is a Notice of Public Hearing and Notice of Filing of Draft Environmental Documents for the proposed Basin Plan amendment to modify beneficial uses of and establish new water quality objectives for mercury in Sulphur Creek (Colusa County). The public hearing will be conducted during the 15/16 March 2007 Water Board meeting at the Regional Water Board office, 11020 Sun Center Drive, Suite 200, Rancho Cordova, CA.

The public review draft staff report can be downloaded below. In order to be included in the written response to comments that is a part of the final administrative record, written comments should be submitted by 28 February 2007 to Karen Larsen, Regional Water Quality Control Board, Central Valley Region, 11020 Sun Center Drive, #200, Rancho Cordova, CA 95670. At the hearing on 15/16 March 2007 staff will summarize the written comments and present a final recommendation for Water Board consideration. Interested persons will be provided the opportunity to present oral comments to the Water Board at the hearing, and are expected to orally summarize their written submittals. Oral testimony will be limited in time by the Water Board Chair.

This staff report proposes an amendment to the Water Quality Control Plan for the Sacramento and San Joaquin River Basins (Basin Plan) to determine that certain beneficial uses are not applicable and establish site-specific water quality objectives for mercury in Sulphur Creek (Colusa County, CA), a tributary to Bear Creek in the Cache Creek watershed.

• Peer Reviewer Comments on Sulphur Creek Basin Plan Amendment Draft Staff Report, 81 KB, PDF (PDF info)
• Response to Peer Reviewer Comments on Sulphur Creek Basin Plan Amendment Draft Staff Report, 461 KB, PDF (PDF info)
• California Environmental Quality Act (CEQA) Environmental Checklist, 595 KB, PDF (PDF info)

This is a technical TMDL report for mercury in Sulphur Creek. The TMDL report contains: a mercury source analysis, numeric targets, a linkage analysis; load allocations, and options for an implementation plan to reduce mercury in Sulphur Creek. A Basin Plan amendment to implement this TMDL was included with the Cache Creek Watershed Mercury TMDL Basin Plan Amendment staff report.