| R2-2018-0011 | Order No. R2-2018-0011 Updated Waste Discharge Requirements and Rescission of Order No. R2-2007-0021 for Waste Management Of California, Inc, Kirby Canyon Recycling and Disposal Facility | Rescission | Santa Clara County | March | 2018 |
| R2-2018-1004 | Order No. R2-2018-1004 against Marin Municipal Water District in the amount of $129,250, pursuant to Water Code sections 13385 and 13323. The Order alleges the District for unplanned chlorinated potable water discharges in violation of its permit for drinking water system discharges to waters of the United States causing fish kill. | Enforcement | Marin County | April | 2018 |
| R2-2018-0012 | Order No. R2-2018-0012 Waste Discharge Requirements for C&H Sugar Company, Inc. and Crockett Community Services District, C&H Sugar Company Refinery | Permit | Contra Costa County | April | 2018 |
| R2-2018-0013 | Order No. R2-2018-0013 Adoption of Site Cleanup Requirements for Isis Properties, LLC; James K. Eu and Ling Yu L. Eu | Permit | Santa Clara County | April | 2018 |
| R2-2018-0014 | Order No. R2-2018-0014 Updated Site Cleanup Requirements and
Rescission of Order Nos. R2-2006-0065 AND R2-2012-0081 for Phillips 66 Company, San Francisco Refinery | Rescission | Contra Costa County | April | 2018 |
| R2-2018-0015 | Order No. R2-2018-0015 Proposed Amendment to the Water Quality Control Plan (Basin Plan) to Establish Water Quality Objectives and a Total Maximum Daily Load (TMDL) for Dissolved Oxygen in Suisun Marsh and to Amend the San Francisco Bay Mercury TMDL to Include Suisun Marsh | Resolution | Solano County | April | 2018 |
| R2-2018-0016 | Order No. R2-2018-0016 Waste Discharge Requirements for City of San Mateo, City of Foster City Estero Municipal Improvement District, City of San Mateo Wastewater Treatment Plant and its Collection System | Permit | San Mateo | May | 2018 |
| R2-2018-0018 | Order No. R2-2018-0018 Rescission of Waste Discharge Requirements for Mrs. Lois and Mr. Greg Tonnesen, Tonnesen Pet Cemetery Class III Waste Disposal Site | Rescission | Solano County | May | 2018 |
| R2-2018-1005 | Order No. R2-2018-1005 Settlement Agreement and Stipulation for Entry of Administrative Civil Liability for Granada Community Services District | Enforcement | San Mateo County | May | 2018 |
| R2-2018-0020 | Order No. R2-2018-0020 U.S. Fish and Wildlife Service and the California Department of Fish and Wildlife, South Bay Salt Pond Restoration Project Phase 2 | Permit | Various | May | 2018 |
