Irrigated Lands Regulatory Program (ILRP)

Growers in the Grassland Drainage Area – Amending Waste Discharge Requirements General Order for Growers in the Grassland Drainage Area, Order R5-2015-0095-07

Proposed for consideration at the 10 December 2026 Regional Board meeting. To be given full consideration, any comment or recommendation you may have must be submitted in writing to the Central Valley Regional Water Quality Control Board office no later than 5:00 pm on 2 December 2026. Questions or comments may be directed to Ashley Peters at (916) 464-4857 or by email at Ashley.Peters@waterboards.ca.gov.

• Cover Letter
• Notice of Public Hearing
• Amending Waste Discharge Requirements (Redline/strikeout available by request.)

San Luis & Delta-Mendota Water Authority and United States Department of the Interior Bureau of Reclamation – Amending Waste Discharge Requirements for Surface Water Discharges from Grassland Bypass Project, Order R5-2019-0077

Proposed for consideration at the 10 December 2026 Regional Board meeting. To be given full consideration, any comment or recommendation you may have must be submitted in writing to the Central Valley Regional Water Quality Control Board office no later than 5:00 pm on 2 December 2026. Questions or comments may be directed to Ashley Peters at (916) 464-4857 or by email at Ashley.Peters@waterboards.ca.gov.

• Cover Letter
• Notice of Public Hearing
• Amending Waste Discharge Requirements (Redline/strikeout available by request.)

The ILRP implements surface water monitoring requirements to protect beneficial uses and ensure irrigated agricultural operations comply with water quality objectives outlined in applicable Basin Plans. Under ILRP General Orders, a Surface Water Quality Management Plan must be developed and implemented when a water quality objective is exceeded more than once within a three-year period at a specific monitoring site.

The Central Valley Water Board is inviting the public and other stakeholders to submit written comments on the Surface Water Quality Management Plans. To request a copy of the Surface Water Quality Management Plan submittals or to submit comments, please contact Mary Church at Mary.Church@waterboards.ca.gov or (559) 445-5577. Written comments can also be mailed to the Fresno Office at:

Central Valley Regional Water Quality Control Board
Attn: Mary Church
1685 E Street
Fresno CA 93706

Comments must be received no later than 5:00 pm on 4 December 2026 to be considered during staff review of the proposed management plans.