2012-001 - Statement of Overriding Considerations, and Adopting a Mitigation Monitoring and Reporting Program

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Chapter 3 Findings Regarding ProjectAllemathres Attachment "A" • 3.4.5 Alternative Site Location No. 3 (Alternative Site No. 3) 3.4.5.1 Summary of Alternative Site No. 3 Alternative Site Location Number 3 (Alternative Site No. 3) would involve the construction of a new replacement lift station in the parking lot of an existing medical office and retail center located at 2835 South Bristol Street in lieu of the proposed Project site. Alternative Site No. 3 is located approximately 0.05-mile north of the proposed Project site. The location of Alternative Site No. 3 is depicted on Final EIR Figure 5-1. The lift station that would be constructed at Alternative Site No. 3 would include a similar above- ground block structure as the proposed Project. In addition, the lift station at Alternative Site No. 3 would feature similar equipment and appurtenances as the proposed Project. This alternative would construct 23 percent less underground sewer conveyance infrastructure than the proposed Project, and it is anticipated that the duration of the Construction Phase 11 would be decreased by six (6) work days (approximately one week) as compared to the Project. The construction schedule for this alternative would otherwise be similar to the Project. This alternative would not require construction activities within the South Bristol Street/West Segerstrom Avenue intersection or beneath the existing paved right-of-way of West Segerstrom Avenue (east of South Bristol Street). Therefore, this alternative would not require the implementation of Construction Configuration C.2. In addition, this alternative would not require implementation of Construction Configurations B.1, B.2, and C.I. However, this alternative would require the installation of new sewer facilities beneath the existing paved right-of-way of South • Bristol Street that are not proposed as part of the proposed Project (i.e., to the north of the existing Segerstrom Lift Station). Specifically, this segment of South Bristol Street contains a 20-inch OCSD trunk sewer, a 36-inch MWD pipeline, a 16-inch water main, and a SCE/MCI Duct Bank. These utilities would require special support during construction of the new 18-inch sewer, as the new sewer line would need to be installed at a depth of approximately 16 feet. Construction along this segment of South Bristol Street likely would require supporting the utilities from the top of the trench. Due to these existing utility constraints beneath South Bristol Street, portions of this roadway would need to be closed to accommodate construction associated with this alternative. Implementation of this alternative would otherwise be similar to the proposed Project during construction conditions. Development of a lift station at Alternative Site No. 3 also would require the City to acquire private property to implement a temporary construction easement, accommodate the proposed lift station, and provide easements for proposed sewer lines, since the proposed lift station would be constructed within the parking lot of an existing medical office and retail center located at 2835 South Bristol Street. 3.4.5.2 Summary Comparison of Environmental Effects The environmental effects of constructing the proposed lift station at Alternative Site No. 3 in comparison to the proposed Project site are shown in Final EIR Table 5-1 and described in detail in RDEIR Section 5.4.5. This alternative would avoid the Project's significant and unavoidable impact associated with Construction Configuration C.2; however, this alternative would create a significant and immitigable near-term traffic impact to a portion of the South Bristol Street road segment that would not occur as part of the proposed Project. This alternative's significant and immitigable impact to South Bristol Street would occur for approximately 14 days during construction, is approximately eleven (11) days shorter than the proposed Project's significant and immitigable San Lorenzo Lift Station EIR (Project No. 06-3510) 3-10 CEQA Findings of Fact/Statement of Overriding Considerations