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A,lin ,r Subdivision Application to Subdivide One -2- 12 August 201.1 °cels Project ,?p,-_,. :ation Number P,,' -1 i; X 132 Sari Joaquin County Phi 3e I and II Munici al Separate Storm Sewer System MS4 Permits' The Phase I and 11 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 modification component. The MS4 permits also require specific design concepts for , ca -cnstr��ction B�J%,!Ps in the early stages of a project during the entitlement and CEQA -1[-,d 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/centraIva[ley/water issues/storm water/munici al permits/ Industrial Storm Water General Permit Storm water discharges associated with industrial sites must comply with the regulations contained in the Industrial Storm Water General Permit Order No. 97-03-DWQ. For more information on the Industrial Storm Water General Permit, visit the Central Valley Water Board website at: tittp://www.waterboards cagov/centralvalley/water issues/storm water/industrial general per mits/index.shtml. Clean Water Act Section 404 Permit If the project will involve the discharge of dredged or fill material in navigable waters or wetlands, a permit pursuant to Section 404 of the Clean Water Act may be needed for the United States Army Corps of Engineers (USACOE). If a Section 404 permit is required by the USACOE, the Central Valley Water Board will review the permit application to ensure that discharge will not violate water quality standards. If the project requires surface water drainage realignment, the applicant is advised to contact the Department of Fish and Game for information on Streambed Alteration Permit requirements. If you have any questions regarding the Clean Water Act Section 404 permits, please contact the Regulatory Division of the Sacramento District of USACOE at (916)557-5250. Clean Water Act Section 401 Permit— Water Quality Certification If an USACOE permit, or any other federal permit, 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. Water Quality Certification must be obtained prior to initiation of project activities. There are no waivers for 401 Water Quality Certifications. Municipal Permits = The Phase I Municipal Separate Storm Water System (MS4) Permit covers medium sized Municipalities (serving between 100,000 and 250,000 people) and large sized municipalities (serving over 250;000 people), The Phase 11 MS4 provides coverage for small municipalities, including non-traditional Small MS4s, which include military bases, public campuses, prisons and hospitals.