San Lorenzo River Nitrate TMDL
Information
Problem Statement - Nitrate concentrations have increased in the San Lorenzo River watershed since the 1950s. In addition, nitrate concentrations are threatening violations of the Water Quality Control Plan, Central Coast Region (Basin Plan) as one constituent or factor that may contribute to taste and odor problems in drinking water.
Documentation
- August 22, 2003 - USEPA approves the removal of the nitrate objective for the San Lorenzo River
- January 14, 2003 - USEPA approves the San Lorenzo River Nitrate TMDL
- February 13, 2002 - OAL approves the removal of the nitrate objective for the San Lorenzo River
- November 15, 2001 - State Water Resources Control Board approves the removal of the nitrate objective for the San Lorenzo River
- September 15, 2000 - Central Coast Water Board adopts the San Lorenzo River Nitrate TMDL
- Staff Report
- Attachment 1 - Resolution R3-2000-003
- Attachment 2 - Project Report (technical report that provides the basis for the TMDL)
- June 2, 2000 - Central Coast Water Board adopts removal of the nitrate objective for the San Lorenzo River
Contacts
- Daniel Ellis
805-549-3889
Daniel.Ellis@waterboards.ca.gov
Status and Public Notices
- Status:
- Report Card September 2023
- Public Notice: none at this time.
Approval status
- Central Coast Water Board
- adopted September 15, 2000. - State Water Resources Control Board
- did not approve the TMDL since the TMDL relied on existing implementation measures. - US Environmental Protection Agency
- approved January 14, 2003, which is the effective date.
