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PA-2000152 Project -2- 28 July 2022 <br /> San Joaquin County <br /> the State Water Resources Control Board(State Water Board), Office of <br /> Administrative Law(OAL)and in some cases,the United States Environmental <br /> Protection Agency (USEPA). Basin Plan amendments only become effective after <br /> they have been approved by the OAL and in some cases,the USEPA. Every three <br /> (3)years,a review of the Basin Plan is completed that assesses the appropriateness <br /> of existing standards and evaluates and prioritizes Basin Planning issues. For more <br /> information on the Water Quality Control Plan for the Sacramento and San Joaquin <br /> River Basins, please visit our website: <br /> http:l/www.waterboards.ca.(lov/centraIvalleVlwater Issues/basin plans/ <br /> Antidegradation Considerations <br /> All wastewater discharges must comply with the Antidegradation Policy(State Water <br /> Board Resolution 68-16)and the Antidegradation Implementation Policy contained in <br /> the Basin Plan. The Antidegradation Implementation Policy is available on page 74 <br /> at: <br /> https://www.waterboards.ca.gov/centraIvalley/water issues/basin plans/sacsjr 2018 <br /> a5.pdf <br /> In part it states: <br /> Any discharge of waste to high quality waters must apply best practicable treatment <br /> or control not only to prevent a condition of pollution or nuisance from occurring, but <br /> also to maintain the highest water quality possible consistent with the maximum <br /> benefit to the people of the State. <br /> This information must be presented as an analysis of the impacts and potential <br /> impacts of the discharge on water quality, as measured by background <br /> concentrations and applicable water quality objectives. <br /> The antidegradation analysis is a mandatory element in the National Pollutant <br /> Discharge Elimination System and land discharge Waste Discharge Requirements <br /> (WDRs) permitting processes. The environmental review document should evaluate <br /> potential impacts to both surface and groundwater quality. <br /> II. Permitting Requirements <br /> Construction Storm Water General Permit <br /> Dischargers whose project disturb one or more acres of soil or where projects <br /> disturb less than one acre but are part of a larger common plan of development that <br /> in total disturbs one or more acres,are required to obtain coverage under the <br /> General Permit for Storm Water Discharges Associated with Construction and Land <br /> Disturbance Activities(Construction General Permit), Construction General Permit <br /> Order No. 2009-0009-DWQ. Construction activity subject to this permit includes <br /> clearing,grading,grubbing,disturbances to the ground, such as stockpiling, or <br /> excavation,but does not include regular maintenance activities performed to restore <br /> the original line, grade,or capacity of the facility. The Construction General Permit <br /> requires the development and implementation of Storm Water Pollution Prevention <br /> Plan(SWPPP). For more information on the Construction General Permit,visit the <br /> State Water Resources Control Board website at: <br /> PA-2000152 (ZR) Informational Letters 14 <br />