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REDWOOD CITY <br />1 Introduction and Overview <br />1.1 Regulatory Mandate <br />The City of Redwood City (City) is one of 76 local government entities subject <br />to the requirements of the San Francisco Bay Region Municipal Regional <br />Stormwater National Pollutant Discharge Elimination System Permit (MRP) <br />issued by the San Francisco Bay Regional Water Quality Control Board <br />(RWQCB). The MRP was last reissued in November 20151. The MRP mandates <br />implementation of a comprehensive program of stormwater control measures <br />and actions designed to limit contributions of urban runoff pollutants to San <br />Francisco Bay. <br />MRP Provision C.3.j.i. requires the City to prepare a Green Infrastructure Plan, <br />to be submitted with an annual reportto the RWQCB due September 30, 2019. <br />Green infrastructure refers to the construction and retrofit of storm drainage <br />to reduce runoff volumes, disperse runoff to vegetated areas, harvest and use <br />runoff where feasible, promote infiltration and evapotranspiration, and use <br />bio -retention and other natural systems to detain and treat runoff before it <br />reaches our creeks and Bay. Green infrastructure facilities include, but are not <br />limited to, pervious pavement, infiltration basins, bio -retention facilities or <br />"raingardens," green roofs, and rainwater harvesting systems. Green <br />infrastructure can be incorporated into construction on new and previously <br />developed parcels, as well as new and rebuilt streets, roads, and other <br />infrastructure within the public right-of-way. <br />Water quality in San Francisco Bay is impaired by mercury and by <br />polychlorinated biphenyls (PCBs). Sources of these pollutants include urban <br />stormwater. By reducing and treating stormwater flows, green infrastructure <br />reduces the quantity of these pollutants entering the Bay and will hasten the <br />Bay's recovery. <br />1 Order 132-2015-0049 <br />RWC GREEN INFRASTRUCTURE PLAN <br />GREEN INFRASTRUCTURE PLAN <br />ATTY/RESO.0075/CC RESO APPROVING THE GREEN INFRASTRUCTURE PLAN —EXHIBITA <br />REV: 06-20-19 PR <br />if <br />Provisions C.11 and <br />C12 in the MRP <br />require San Mateo <br />Permittees (Son <br />Mateo County and its <br />20 cities and towns) <br />to reduce estimated <br />PCBs loading by 15 <br />grams/year and <br />estimated mercury <br />loading by 6 grams/ <br />year using Green <br />Infrastructure <br />ri <br />by lune 30, 2020. <br />1 JUNE 2019 <br />RESO. NO. 15780 <br />MUFF NO. 802 <br />