On August 28, 2019, the California Office of Administrative Law (“OAL”) approved the State Wetland Definition and Procedures for Discharges of Dredged or Fill Materials to Waters of the State (“Procedures”). Consequently, the Procedures will become effective on May 28, 2020 — nine (9) months after OAL approval, based on the implementation date set forth in the Procedures.

The move by OAL comes despite allegations by the San Joaquin Tributaries Authority (“SJTA”) that the State Water Board exceeded its statutory authority and failed to comply with the California Water Code. The SJTA filed a petition for writ of mandate and complaint for mandatory relief challenging the Procedures in Sacramento Superior Court on May 1, 2019, and subsequently filed an amended petition for writ of mandate and complaint on May 20, 2019. According to the SJTA, the State Water Board’s adoption of the Procedures was unlawful, and must therefore be set aside for several reasons, which are fully described in our May 9, 2019 client alert on the litigation.