AgdaPkt 2017-09-11 Closed and Joint SA PFA

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7.A. - Page 130 LSA ASSOCIATES, INC. ROCKETSHIP REDWOOD CITY ELEMENTARY SCHOOL PROJECT SEPTEMBER 2016 INITIAL STUDY/MITIGATED NEGATIVE DECLARATION existing 8-inch PVC sanitary sewer line is located within the vicinity of the site within Charter Street. The site is currently served by a 6-inch sanitary sewer pipe that connects from the project site to the City's PVC sanitary sewer line within Charter Street. The proposed project would construct a new 6- inch sanitary sewer line to connect to the City's PVC sanitary sewer line. The new sanitary sewer line would be constructed in conformance to City standards. Based on current wastewater patterns at other Rocketship schools,it is estimated that the proposed project would generate approximately 822 gallons of wastewater per day(see Section XVILd). The proposed project would connect directly to the existing sewer lines,which would have sufficient capacity to accommodate the proposed project; therefore,this impact would be less than significant. Also refer to Section XVILa. Water Infrastructure.Redwood City's potable municipal water supply is provided by the Hetch Hetchy regional water system operated by the San Francisco Public Utilities Commission (SFPUC). The City's water infrastructure system consists of a network of pipelines, storage reservoirs,and pump stations. There are 13 metered connections to four SFPUC pipelines located in Redwood City. There are also 10 emergency interties with California Water Service Company,Mid- Peninsula Water District,and the City of Menlo Park. The potable water system has 265 miles of distribution mains, 12 storage reservoirs, 10 pump stations,2,397 fire hydrants,and 26 pressure reducing valves ranging from 2 to 6 inches in diameter.121 The current SFPUC water supply delivered to Redwood City comes from the Tuolumne River and local Bay Area reservoirs. This water(referred to as"Hetch Hetchy water"),is conveyed through pipes and tunnels to the Bay Area and requires only primary disinfection and pH adjustment to control corrosion in the pipelines.Monitoring the quality of the imported Hetch Hetchy supply is conducted by the SFPUC.Water that is delivered to Bay Area reservoirs receives filtration and disinfection treatment at either the Sunol or the Harry Tracy filtration plants. Filtered water from these treatment plants may be commingled with unfiltered Hetch Hetchy water in Bay Area transmis- sion pipelines. Water is continuously monitored and tested by SFPUC to ensure that water delivered to customers meets or exceeds federal and State drinking water and public health requirements. The City updated its Urban Water Management Plan (UWMP)in 2010,which was adopted in 2011. According to UWMP,The total capacity of Redwood City's 12 water storage facilities is 21.24 million gallons and the storage facilities are in excellent condition. Additional water storage tanks are also planned. Future water demand cited in the Plan is based in part on the 2010 General Plan land use and population projections.122 The City also assumes that its recycled water project will meet anticipated recycled water demands in the year 2030,as indicated in the 2005 UWMP;the recycled water system has been designed to meet this future demand.12' The recycled water project includes a system capable producing and delivering up to 3,238 AFY.124 121 Redwood City,City of,2010. Urban Water Management Plan.Available online at:www.redwoodcity.or / publicworks/water/uwmp2011/Final UWMP.pdf(accessed on November 24,2014). 1221bid. 121 Redwood City,City of,2010.Redwood City New General Plan,Draft Environmental Impact Report,Section 4.15 Utilities. 124 Redwood City,City of,2010. Urban Water Management Plan, op.cit. P:1RWC1401B Rocketship SchoohPRODUCrSUS-MND1Public\Ra ketship Public Review 09-29-16.docx(09/29/16)PUBLIC REVIEW DRAFT 106 ATTY/RESO.0084/CC RESO ADOPTING CEQA-ROCKETSHIP CHARTER SCHOOL APPEAL REV:09-05-17 VR Page 114 of 124