Laserfiche WebLink
7.A. - Page 7 <br /> submittals cited in the appeal letter are letters submitted by Dave Tanner, Inc. and <br /> Prism Engineering dated June 16, 2017, and a letter from Rasmussen Planning, Inc. <br /> dated June 15, 2016. These letters reiterate comment letters previously submitted and <br /> reply to the responses prepared by LSA to those earlier comment letters in the updated <br /> Response to Comments memo. The primary environmental impacts raised in the <br /> submittals relate to the presence of hazardous materials on the Project Site and traffic <br /> and transportation impacts. <br /> Hazardous Materials <br /> As described in IS/MND (attached to this report), site contamination has been <br /> identified on the property and a determination of "Potentially Significant Unless <br /> Mitigation Measures Incorporated" has been made. Site investigation indicated that <br /> vapor intrusion of volatile organic compounds (VOCs) were found within the eastern <br /> and southwestern portion of the existing building. The property owner has installed a <br /> soil vapor recovery system to mitigate the vapor intrusion from volatile organic <br /> compounds within the groundwater beneath the site. The soil vapor recovery system <br /> diverts the vapor intrusion from beneath the building to the exterior of the <br /> building to maintain safe indoor air quality. The CEQA analysis also evaluated the <br /> soil vapor recovery system and determined that it would not have an impact on the <br /> surrounding air quality. The State Department of Toxic Substance Control (DTSC) <br /> issued a letter determining the use of the site as a school poses no unacceptable health <br /> risk to project uses associated with the residual subsurface contamination. None of the <br /> comment letters received and cited in the appeal letter contain any evidence that the <br /> soil vapor recovery system will not adequately remedy the vapor intrusion or that the <br /> DTSC's conclusion that the Project Site does not pose an unacceptable health risk is <br /> erroneous. <br /> Transportation/Traffic <br /> The project is expected to generate 462 trips (250 inbound and 212 outbound) during <br /> the AM new peak hour and 250 trips (102 inbound and 148 outbound) during the <br /> PM peak hour. This is based on a trip generation rate of .96 trips per student, <br /> which is similar to what other Rocketship Charter Schools in the Bay Area <br /> experience. This rate is approximately double the standard trip generation rate for <br /> an elementary school as published in the Institute of Transportation Engineers Trip <br /> Generation Manual, 9th Edition. The applicant will implement a Transportation <br /> Demand Management (TDM) Program with supplemental measures that will <br /> encourage students and employees to carpool, take transit or use active modes of <br /> transport to get to and from school. These supplemental measures were not taken <br /> into account in estimating the Project's trip generation. <br /> The traffic report found that although several nearby intersections currently operate <br /> at unacceptable levels of service, the project-generated traffic would not cause a <br /> significant impact at any of the studied intersections. The traffic report also evaluated <br /> site access and on-site circulation and concludes that the double-loaded snake <br /> driveway will accommodate stacking of vehicles on-site during drop-off and pick-up <br /> and will not result in traffic queueing onto the street. School staff will be present <br />