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PA-1500021 Project -2 - 1 September 2015 San Joaquin County ' 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 Quality Control Plan for the Sacramento and San Joaquin River Basins, please visit our website: http://www.waterboards.ca.gov/centralvalley/water_issues/basin plans/. 11. Permitting Requirements 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-DWQ. 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 (SWPPP). For more information on the Construction General Permit, visit the State Water Resources Control Board website at: http://www.waterboard-w-a:gov/water issues/programs/stormwater/constpermits.shtmi._ Phase I and II Municipal Separate Storm Sewer System (MS4) Permits' The Phase I and II MS4 permits require the Permittees reduce pollutants and runoff flows from new development and redevelopment using Best Management Practices (BMPs) to the maximum extent practicable (MEP). MS4 Permittees have their own development standards, also known as Low Impact Development (LID)/post-construction standards that include a hydromodification component. The MS4 permits also require specific design concepts for LID/post-construction BMPs in the early stages of a project during the entitlement and CEQA process and the development plan review process. For more information on which Phase I MS4-Permit this project applies to, visit the Central Valley Water Board website at: http://www.waterboards.ca.gov/centralvalley/water_issues/storm water/municipal_permits/. ' Municipal Permits=The Phase I Municipal Separate Storm Water System(MS4) Permit covers medium sized Municipalities(serving between 140,000 and 250,000 people)and large sized municipalities(serving over 250,000 people). The Phase II MS4 provides coverage for small municipalities, including non-traditional Small MS4s,which include military bases, public campuses, prisons and hospitals.