AgdaPkt 2017-09-11 Closed and Joint SA PFA

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TA. - Page 81 LSA ASSOCIATES, INC. ROCKETSHIP REDWOOD CITY ELEMENTARY SCHOOL PROJECT SEPTEMBER 2016 INITIAL STUDY/MITIGATED NEGATIVE DECLARATION Hazardous materials are also commonly found in building materials of older buildings. Prior to 1978, lead compounds were commonly used in interior and exterior paints and prior to the 1980s,building materials often contained asbestos fibers. Since the existing building was constructed in 195470(the existing metal shed was added to the site between 1981 and 1991),the existing building and/or the metal shed could contain lead-based paint(LBP)and asbestos-containing materials(ACM). In addition,other common items present in buildings, such as electrical transformers, fluorescent lighting,electrical switches,heating/cooling equipment,and thermostats,often contain hazardous materials, such as polychlorinated biphenyl(PCBs)in the light ballasts,and mercury in old thermostats,which may pose a health risk if not handled and disposed of properly. At the time this Initial Study was prepared,no hazardous materials survey had been conducted for the project site; however,a Phase I Environmental Site Assessment conducted in 2004 indicated that the building contained ACM.7' During renovation activities associated with the proposed project,these materials may be disturbed or released. The following mitigation measure would reduce this potentially significant impact to a less-than-significant level. Mitigation Measure HAZ-2: Hazardous building materials surveys shall be conducted by a qualified and licensed professional for the metal shed and the existing building. All loose and peeling LBP and ACM shall be abated by certified contractor(s)in accordance with National Emission Standards for Hazardous Air Pollutants guidelines,Bay Area Air Quality Manage- ment District,and Division of Occupational Safety and Health(Cal/OSHA)requirements. All other hazardous materials shall be removed from buildings prior to renovation in accordance with applicable regulations. Completion of the abatement activities shall be documented by a qualified environmental professional(s)and submitted to the City and/or San Mateo County for review with applications for issuance of construction permits. c) Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within 0.25 miles of an existing or proposed school?(Less-Than-Significant Impact) Hoover Elementary School is located approximately 0.3 miles south of the project site at 701 Charter Street and Summit Preparatory Charter High School is located approximately 0.14 miles(750 feet) north of the project site at 890 Broadway Street. As discussed in Section VIILa,the proposed school would likely store and use minor amounts of hazardous materials and,as a matter of routine,the operation of the school would not be expected to result in emissions of hazardous materials. Emissions of VOCs to outdoor air from the subsurface contamination were evaluated as part of the site characterization and were"considered minor due to atmospheric mixing. ,72 Any emissions from the building vapor collection system would similarly disperse in air and be below levels of concern. Therefore,impacts related to the proximity of nearby schools would be less than significant. 70 Cornerstone Earth Group,2014,Phase I Environmental Site Assessment,op.cit. 71 Ibid. 72 The Source Group Inc.,2016,op.cit. P:1RWC1401B Rocketship Sch-I\PRODUCrSUS-MND1Public\Ra ketship Public Review 09-29-16.docx(09/29/16)PUBLIC REVIEW DRAFT 57 ATTY/RESO.0084/CC RESO ADOPTING CEQA-ROCKETSHIP CHARTER SCHOOL APPEAL REV:09-05-17 VR Page 65 of 124