| R2-2021-0002 | Resolution No. R2-2021-0002, Amending the Water Quality Control Plan for the San Francisco Bay Basin (Basin Plan) to Establish a Total Maximum Daily Load (TMDL) and Implementation Plan for Bacteria at the Beaches in Pillar Point Harbor and Venice Beach, and to incorporate Bacteria objectives into the Basin Plan | Resolution | San Mateo County | February | 2021 |
| R2-2021-1002 | Order No. R2-2021-1002, Settlement Agreement and Stipulation for Entry of Administrative Civil Liability for City of Sunnyvale, Sunnyvale Water Pollution Control Plant | Permit | Santa Clara County | March | 2021 |
| R2-2020-1022 | Order No. R2-2020-1022, Settlement Agreement and Stipulation for Entry of Administrative Civil Liability for Sonoma Valley County Sanitation District | Permit | Sonoma County | January | 2020 |
| R2-2021-0004 | Order No. R2-2021-0004, Waste Discharge Requirements for City of St. Helena, City of St. Helena Wastewater Treatment and Reclamation Plant and Wastewater Collection System | Permit | Napa County | April | 2021 |
| R2-2021-0005 | Order No. R2-2021-0005, Amended Waste Discharge Requirements and Water Quality Certification, Order No. R2-2020-0034 for Napa County Flood Control and Water Conservation District, Stream Maintenance Program; San Mateo County Routine Maintenance Program; Contra Costa County Flood Control and Water Conservation District and Contra Costa County Public Works Department Routine Maintenance Program | Permit | Various | April | 2021 |
| R2-2021-1007 | Order No. R2-2021-1007, Settlement Agreement and Stipulation for Entry of Administrative Civil Liability for Martinez Refining Company, LLC | Enforcement | Contra Costa | April | 2021 |
| R2-2021-1004 | Order No. R2-2021-1004, Acceptance of Conditional Resolution and Waiver of Right to Hearing for Treasure Island Development Group, Former Naval Station, Treasure Island | Enforcement | San Francisco County | May | 2021 |
| R2-2021-1003 | Order No. R2-2021-1003, Acceptance of Conditional Resolution and Waiver of Right to Hearing for SJ Park Almaden, LLC | Enforcement | Santa Clara County | May | 2021 |
| R2-2021-1006 | Order No. R2-2021-1006, Acceptance of Conditional Resolution and Waiver of Right to Hearing for Windy Hill PV Five CM, LLC | Enforcement | San Mateo County | May | 2021 |
| R2-2021-1009 | Order No. R2-2021-1009, Acceptance of Conditional Resolution and Waiver of Right to Hearing for S and B Milpitas, LLC | Enforcement | Santa Clara County | May | 2021 |
