Reso PC17-07 0032 PC Reso Approving CEQA - 860 Charter St

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LSA ASSOCIATES, INC. SEPTEMBER 2016 ROCKETSHIP REDWOOD CITY ELEMENTARY SCHOOL PROJECT INITIAL STUDY/ MITIGATED NEGATIVE DECLARATION P:\RWC1401B Rocketship School\PRODUCTS\IS-MND\Public\Rocketship Public Review 09-29-16.docx (09/29/16) PUBLIC REVIEW DRAFT 105 treatment. These districts include the Emerald Lake Heights, Fair Oaks, Kensington Square, Oak Knoll and Edgewood Sewer Districts. The project site is located within San Mateo County’s Fair Oaks Sewer Maintenance District and the wastewater contributions of all of these districts are considered part of the City’s total inflows to the SVCW treatment plant. The SVCW treatment plant has an operating capacity of 29 million gallons per day (mgd) average dry weather flow. The plant is permitted by the Water Board to discharge 29 mgd ADWF into San Francisco Bay. The current permitted peak wet weather capacity of the SVCW facility is 71 mgd. Redwood City’s peak wet weather allocation at the treatment plant is approximately 30.5 mgd.117 SVCW adopted a 10-year Capital Improvement Program (CIP) in 2008 which will assure that the facility is able to continue to meet or exceed the wastewater treatment requirements established for it by the Water Board.118 In addition, the City completed a Sewer Master Plan in 2008, which evaluated the capacity of the sewer system under existing and future 2030 loading conditions,119 based on land use assumptions as well as 2030 projections from the Association of Bay Area Governments (ABAG). The Sewer Master Plan recommended a program of projects to expand the capacity of the City’s wastewater collection system, primarily consisting of new or expanded sewer lines in prioritized locations. These projects were incorporated into a capital improvement program and are expected to be implemented over a 10 to 15 year time frame.120 The proposed project would increase wastewater generation on the site compared to existing conditions. For the purposes of this analysis, wastewater generation is assumed to be approximately 90 percent of water usage (the 10 percent differential includes consumed water and water used for irrigation). As discussed below in Section XVII.d, water demand associated with proposed project is assumed to be 913 gallons per day; therefore, wastewater generation is anticipated to be 822 gallons per day. Although the project would increase wastewater generation compared to existing conditions, the increase in demand for wastewater treatment services would result in a less than 0.001 percent contribution to the daily permitted treatment capacity of the wastewater treatment plant. In addition, the 2008 Sewer Master Plan and capital improvement program ensure that there is sufficient capacity available at the SVCW treatment plant to treat additional wastewater flows. Therefore, wastewater generated from the proposed project would not cause the SVCW to violate any wastewater treatment requirements and this impact would be less than significant. b) Require or result in the construction of new water or wastewater treatment facilities or expansion of existing facilities, the construction of which could cause significant environmental effects? (Less-Than-Significant Impact) Wastewater Infrastructure. As discussed in Section XVII.a, wastewater treatment for Redwood City is provided by the SVCW treatment plant and the wastewater collection system is maintained by the City. The project site would be served by existing wastewater lines and would not require the construction of new wastewater treatment facilities or the expansion of existing ones. An 117 Ibid. 118 Ibid. 119 Ibid. 120 Ibid. ATTY/RESO.0032/PC RESO APPROVING CEQA - 860 CHARTER ST. EXHIBIT A REV: 06-15-17 PR Page 113 of 124