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PA-2000083 - Site Approval Project - 2 - 17 August 2020 San Joaquin County Administrative Law <OAL) and in some cases, the United States Environmental Protection Agency (U SE PA). Basin Plan amendments only become effective after they have been approved by the OAL and in some cases, the USEPA. Every three (3) years, a review of the Basin Plan is completed that assesses the appropriateness of existing standards and evaluates and prioritizes Basin Planning issues. For more information on the Water Qua/ity Control P/an for the Sacramento and San Joaquin River Basins, please visit our website: htto�// t rb rds ca cov/centra lvallev/water issue /b 1 / Antitlearadatlon Considerations All wastewater discharges must comply with the Antidegradation Policy (State Water Board Resolution 68-16) and the Antitlegradation Implementation Policy contained in the Basin Plan. The Antidegradation Implementation Policy is available on page 74 at: httos�//ww at b d a /centra lvallev/water issues/ba I / 20'18 06.odf In part it states: Any discharge of waste to high qua/ity waters must app/y best practicab/e treatment or control not on/y to prevent a condition of pollution or nuisance from occurring,. but a/so to maintain the highest water qua/ity possib/a consistent with the maximum benefit to the paop/s of the State. This information must be presented as an anelysis of the impacts and potentia/ impacts of the discharge on water qualily, as measured by bacKground concentrations and app/icab/e water qualily objectives. The antide9 radation analysis is a mandatory element in the National Pollutant Discharge Elimination System and land discharge Waste Discharge Requirements (WDRs) permitting processes. The environmental review document should evaluate potential impacts to both surface and groundwater quality. 11. Permitting Req ulrements Construction Storm Water General Permit Dischargers whose project disturb one or more acres of soil or where projects disturb less than one acre but are part of a larger common plan of development that in total disturbs one or more acres, are required to obtain coverage under the General Permit for Storm Water Discharges Associated with Construction Activities (Construction General Permit), Construction General Permit Order No. 2009-009- DWO. Construction activity subject to this permit includes clearing, grading, grubbing, disturbances to the ground, such as stockpiling, or excavation, but does not include regular maintenance activities performed to restore the original line, grade, or capacity of the facility. The Construction General Permit requires the development and implementation of a Storm Water Pollution Prevention Plan (SWPP P). For more information on the Construction General Permit, visit the State Water Resources Control Board website at: htto�//www wets b and ao /water issues/nroarams/sto t / o stoermits sht ml