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PA- 2000009 Project - 3 - 7 August 2020 <br /> San Joaquin County <br /> Phase I and II Municipal Separate Storm Sewer System ( MS4 ) Permits ! <br /> The Phase I and II MS4 permits require the Permittees reduce pollutants and runoff <br /> flows from new development and redevelopment using Best Management Practices <br /> ( BMPs ) to the maximum extent practicable ( MEP ) . MS4 Permittees have their own <br /> development standards , also known as Low Impact Development ( LID ) / post- <br /> construction standards that include a hydromodification component . The MS4 <br /> permits also require specific design concepts for_ LID / post- construction BMPs in the <br /> early- stages of a project during the- entitlement and CEQA process and- the <br /> development plan review process . <br /> For more info-rmation on which Phase I MS4 - Permit this-- project applies to , visit the <br /> Central Valley Water Board web_site at : <br /> http : //www . waterboards . ca . gov/ centralvalley/water issues / storm water/ municipal p <br /> ermits / <br /> For more information on the Phase II MS4 permit and who it applies to , visit the <br /> State Water Resources Control Board at : <br /> http : //www . waterboards . ca . gov/wate-r issues/ programs/stormwater/ phase ii m-uniGi <br /> pal . shtml <br /> Industrial Sto-1 m Water General Permit <br /> Storm water discharges associated with industrial sites musfcomply with the <br /> regulations contained in the Industrial Storm Water General Permit Order No . 2014 - <br /> 0057 - DWQ . For more information on the Industrial Storm Water General Permit , <br /> visit the Central Valley Water Board website at . <br /> http : //www . waterboards . ca . gov/ centralvalley/water issues/storm water/ industrial ge <br /> neral permits / index . shtml <br /> Clean Water Act Section 404 Permit <br /> If the project will involve the discha.,ge of dredged or fill material in navigable waters <br /> or wetlands , a permit pursuant to Section 404 of the Clean Water Act may be <br /> needed from the United States Army Corps of Engineers ( USACE ) . If a Section 404 <br /> permit is required by the USACE , the Central Valley Water Board will review the <br /> permit application to ensure that discharge will not violate water quality standards . If <br /> the project requires surface water drainage realignment , the applicant is advised to <br /> contact the Department of Fish and Game for information on Strea.mbed Alteration <br /> Permit requirements . If you have any questions regarding the Clean Water Act <br /> Section 404 permits , please contact the Regulatory D-ivision of the Sacramento <br /> District of USACE at ( 916 ) 557 - 5250 . <br /> Clean Water Act Section 401 Permit — Water Quality Certification <br /> If an USACE permit ( e . g . , Non - Reporting Nationwide Permit , Nationwide Permit , <br /> Letter of Permission , Individual Permit , Regional General Permit , Programmatic <br /> Municipal Permits = The Phase I Municipal Separate Storm Water System ( MS4 ) <br /> Permit covers medium sized Municipalities ( serving between 100 , 000 and 250 , 000 <br /> people ) and large sized municipalities ( serving over 250 , 000 people ) . The Phase II <br /> MS4 provides coverage for small municipalities , including non -traditional Small MS4s , <br /> which include military bases , public campuses , prisons and hospitals . <br />