AgdaPkt 2003-08-25 - Laserfiche WebLink

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C. Wastewater Collection System, Transmission System and Treatment Capacity Potential Impact: The proposed Project and the Higher Occupancy Scenario would result in ii:creased wastewater flows from the project site. While there is sufficient capacity at the wastewater treatment plant to accommodate the additional flows from the Master Plan, the number of buildings, their locations, and their sequencing may adversely affect the local wastewater collection system and transmission system. (Potentially Significant) Mitigation: The following mitigation measure, as set forth in the FEIR, is hereby adopted and will be implemented as provided in the Mitigation Monitoring Program: • Mitigation Measure UT -3.1 Finding: Mitigation Measure UT -3.1 is feasible and would reduce the potentially significant environmental impact described above to a less- than - significant level. The projected average daily water demand for the proposed Project at buildout, calculated based on City standards, is 0.209 mgd (234 AFN), absent mitigation measures. Therefore, based upon Redwood City Engineering Policy Standards and Guidelines, the projected average daily wastewater flow for the proposed Project will be some factor less than the average daily water demand. The treatment plant currently has the permitted treatment capacity to handle the projected demand from the proposed Project and the Higher Occupancy Scenario at buildout based on the projected average daily water demand. The wastewater treatment plant has sufficient existing capacity to accommodate the proposed Project or the Higher Occupancy Scenario at buildout. However, the sewer collection and transmission systems are currently functioning at maximum capacities. In some cases, the pipes are functioning under surcharged conditions. The South Bayside System Authority's Maple Street Sanitation Pump Station and transmission pipe from Maple Pump Station to the treatment plant are at capacity during wet weather flow conditions. Because sewer collection and transmission systems are currently functioning at maximum capacities, any increase in wastewater flow could exceed capacity. To reduce the impact of the proposed Project or the Higher Occupancy Scenario on the wastewater collection system to less than significant levels, Mitigation Measure UT -3.1 requires Kaiser to be responsible for the cost of analysis, design, and construction of all necessary upgrades to or replacement of sewer collection and transmission to adequately serve the project. The proposed Precise Plan incorporate: Mitigation Measures UT -3.1 by requiring necessary infrastructure or a financial contribution to collect, transmit, and treat wastewater. Wastewater calculations will be derived from the water demand projections. Any necessary infrastructure 15