| R2-2019-1005 | Order No. R2-2019-1005 Acceptance of Conditional Resolution and Waiver of Right to Hearing for Stanford University, NPDES Permit CAG912002, Regulatory Measure 428831 | Enforcement | San Mateo County | May | 2019 |
| R2-2019-1014 | Order No. R2-1019-1014 Acceptance of Conditional Resolution and Waiver of Right to Hearing for Lehigh Southwest Cement Company and Hanson Permanente Cement, Inc., NPDES Permit CA0030210, Regulatory Measure 428523 | Enforcement | Santa Clara County | May | 2019 |
| R2-2019-1015 | Order No. R2-2019-1015 Settlement Agreement and Stipulation for Entry of Administrative Civil Liability for East Bay Municipal Utility District, Orinda Water Treatment Plant | Enforcement | Contra Costa County | May | 2019 |
| R2-2019-1017 | Order No. R2-2019-1017 Settlement Agreement and Stipulation for Entry of Administrative Civil Liability for Phillips 66 Company, San Francisco Refinery | Enforcement | Contra Costa County | June | 2019 |
| R2-1988-062 | Order No. R2-1988-062 Site Cleanup Requirements For Brandenburg, Staedler & Moore and Brandenburg-Butters Associates | Permit | Santa Clara County | April | 1988 |
| R2-2004-0096 | Order No. R2-2004-0096 Amendment of Site Cleanup Requirements (Order No. R2-2004-0046) for Signature at The Estuary, LLC. | Permit | Alameda County | December | 2004 |
| R2-2019-0021 | Order No. R2-2019-0021 Waste Discharge Requirements for Cities of South San Francisco and San Bruno and North Bayside System Unit (NBSU) | Permit | San Mateo County | July | 2019 |
| R2-2019-0019 | Order No. R2-2019-0019 Waste Discharge Requirements for Sonoma Valley County Sanitation District, Sonoma Valley County Sanitation District Wastewater Treatment Plant and Wastewater Collection System | Permit | Sonoma County | July | 2019 |
| R2-2019-0024 | Order No. R2-2019-0024 Waste Discharge Requirements for Lehigh Southwest Cement Company and Hanson Permanente Cement, Inc. | Permit | Santa Clara County | July | 2019 |
| R2-2019-0022 | Order No. R2-2019-0022 Rescission of Site Cleanup Requirements (Order Nos. 01-066, R2-2002-0033, R2-2002-0128, AND R2-2004-0006) for Chevron USA Products Company Bay Cities Oil Marketers, Inc., Dillingham Construction N. A., Inc., Texaco, Inc., Equiva Services, LLC, Phillips Petroleum Company, ExxonMobil Oil Corporation, Exxon Mobil Corporation, Atlantic Richfield Company,
Napa County Flood Control and Water Conservation District
| Rescission | Napa County | July | 2019 |
