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PA-1900179 Project - 4 - 9 November 2020 San Joaquin County General Permit), or any other fetleral permit (e.g., Section 1 O of the Rivers and Harbors Act or Section 9 from the United States Coast Guard), is required for this project due to the disturbance of waters of the United States (such as streams and wetlands), then a Water Quality Certification must be obtained from the Central Valley Water Board prior to initiation of project activities. There are no waivers for 401 Water Quality Certifications. For more information on the Water Quality Certification, visit the Central Valley Water Board website at: httos�//www wale bo d / ntralvallev/water 'ss / t I't certificatio n/ Waste Discharge Requirements — Discharges to Waters of the State If USACE determines that only non-jurisdictional waters of the State (i.e., "non- federal"waters of the State) are present in the proposed project area, the proposed project may require a Wastes Discharge Requirement(WOR) permit to be issued by Central Valley Water Board. Under the California Porter-Cologne Water Quality Control Act, discharges to all waters of the States, inclutling all wetlands and other waters of the State including, but not limited to, isolated wetlands, era subject to State regulation. For more information on the Waste Discharges to Surface Water N PDES Program and WOR processes, visit the Central Valley Water Board website at:httos�//www waterbo dgov/centralvallev/water / t to surface wet er/ Projects involving excavation or fill activities impacting less than 0.2 acre or 400 linear feet of non-jurisdictional waters of the state and projects involving dredging activities impacting less than 50 cubic yards of non-jurisdictional waters of the state may be eligible for coverage untlar the State Water Resources Control Board Water Quality Order No. 2004-0004-DWQ (General Order 2004-0004). For more information on the General Order 2004-0004, visit the State Water Resources Control Boartl website at: httos// to boartls cagov/board d /adopted orders/ t ft /200 4/wgo/wgo2004-0004.odf Dewatering Permit If the proposed project includes construction or groundwater tlewatering to be dischargetl to land, the proponent may apply for coverage under State Water Board General Water Quality Ortler (Low Threat Ganaral Order) 2003-0003 or the Central Valley Water Board's Waiver of Report of Waste Discharge and Waste Discharge Requirements (Low Threat Waiver) R5-2018-0085. Small temporary construction dewatering projects are projects that discharge groundwater to land from excavation activities or dewatering of underground utility vaults. Dischargers seeking coverage under the General Order or Waiver must fila a Notice of Intent with the Central Valley Water Board prior to beginning discharge. For more information regarding the Low Threat General Order and the application process, visit the Central Valley Water Board website at: htto�//w t rboards ca go /b d decisions/adopt d ders/water g 1'tv/2003/ wgo/wg 02003-0003.odf