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 88 3. Operations at an unsignalized intersection to deteriorate from an acceptable level (LOS D or better) to an unacceptable level (LOS E or F); or 4. Delay at an unsignalized intersection operating at an unacceptable level (LOS E or F) to increase by five seconds or more; and traffic volumes at the intersection satisfy the Caltrans peak-hour volume signal County of San Mateo. According to the County of San Mateo Traffic Impact Study Require- ments, a project is considered to have a significant impact if, for either peak hour, either of the following conditions occurs:110 1. For intersections currently in compliance with the level of service standard, a project will cause the intersection to operate at a level of service that violates the overall standard of LOS C with no individual movement operating at worse than LOS D. On occasion, LOS D may be allowed for peak periods in very dense urban conditions at the County's discretion. 2. For intersections currently NOT in compliance with the level of service standard, a project will cause the intersection to operate at a level of service that violates the standard LOS mentioned above and the proposed project increases average control delay and individual movements at the intersection by 4 seconds or more. Minimum LOS standards for County intersections are typically LOS C or better; however, an LOS D standard may be allowed for peak periods in very dense urban conditions per the County's discretion. Because the study area is considered urban, a LOS D standard was applied to intersections as a whole as well as to individual movements. Congestion Management Program. The CMP LOS standard for the Middlefield Road and Woodside Road intersection is LOS E or better. However, since the City of Redwood City has a more conservative LOS standard (LOS D), this intersection was analyzed based on the more stringent City of Redwood City standards. Project Trip Estimates. The magnitude of traffic produced by a new development and the locations where that traffic would appear are estimated using a three-step process: 1) trip generation, 2) trip distribution, and 3) trip assignment. In determining project trip generation, the magnitude of traffic entering and exiting the site is estimated for the AM and PM peak hours. As part of the project trip distribution, an estimate is made of the directions to and from which the project trips would travel. In the project trip assignment, the project trips are assigned to specific streets and intersections. These procedures are described below. Trip Generation. The traffic generated by the proposed school would comprise trips by staff, visitors, non-working parents, and working parents. There would be approximately 25 full-time staff members and 5 to 10 part-time staff at the site. As noted in the Traffic Study, it is estimated that 60 percent of parents would drop off students on the way to work, while the remaining 40 percent would drop off students and return home.111 110 San Mateo, County of, 2013. Traffic Impact Study Requirements, County of San Mateo, Department of Public Works, Roadway Services. September 1. 111 Hexagon Transportation Consultants, Inc., 2016, op. cit. ATTY/RESO.0032/PC RESO APPROVING CEQA - 860 CHARTER ST. EXHIBIT A REV: 06-15-17 PR Page 96 of 124