20A - AA FIRST ST BRIDGE REPLACEMENT PROJECT

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LSA ASSOCIATES, INC. INITIAL STUDY/MITIGATED NEGATIVE DECLARATION JULY 2010 FIRST STREET BRIDGE REPLACEMENT PROJECT CITY OF SANTA ANA The bridge demolition and street widening will generate different pollutant emissions. There is a potential that during the demolition of the bridge, ACMs, could be released into the air. Any activity that involves cutting, grinding, or drilling during demolition could release friable asbestos fibers unless proper precautions are taken. Utility pole-mounted electrical transformers were observed within the project limits. Polychlorinated biphenyls (PCBs) were used in electrical transformers manufactured between 1929 and 1977. Leaking transformers are considered a potential hazard for PCB. Therefore, surveys will be required prior to relocation of these utilities. First Street and the bridge contain some traffic stripes and pavement-marking materials (i.e., paint, thermoplastic, permanent tape, and temporary tape) which may consist of lead. Yellow paints made prior to 1995 may exceed hazardous waste criteria under Title 22, California Code of Regulations, and may require disposal to a Class I disposal site. Therefore, any yellow traffic striping and pavement-marking material should be tested and removed in accordance with Caltrans Standard Special Provisions (SSP) XE 15-300. Mitigation Measure HM-1 and compliance with current standards will reduce potential impacts related to public and transportation of hazardous materials. All materials containing PCBs, lead based paint, and asbestos will need to be removed, handled, and disposed of in accordance with State and federal laws regulating remediation and disposal of these materials. Mitigation Measures HM-1 through HM -7 will reduce potential impacts to a level below significance. Mitigation Measures HM-1 Prior to bridge demolition and First Street widening testing and removal of any yellow traffic striping and pavement-marking material will be required in accordance with Caltrans Standard Special Provisions (SSP) XE 15-300. HM-2 Prior to relocation of the utility pole-mounted transformers from the project site, transformers should be inspected for leaks. Leaking transformers should be considered a potential for polychlorinated biphenyl (PCB) hazard unless tested and should be handled accordingly. HM-3 Prior to demolition a certified asbestos consultant should conduct asbestos testing of the existing bridge. HM-4 Prior to commencement of any construction activity, AGMs should be removed and disposed of by a licensed and certified asbestos abatement contractor in accordance with Caltrans SSP 5.1-7, "Removal of Asbestos and Hazardous Substances. HM-5 Any demolition or renovation of a structure requires notification and submittal of fees to the South Coast Air Quality Management District (SCAQMD) at least 10 days prior to proceeding with the demolition work (refer to SCAQMD Rule 1403). Failure to do so may result in the City being cited for regulatory noncompliance. Notification would fall under Sections 7-1.01F, Air Pollution Control, and 7-1.04, Permits and Licenses of the Standard Specifications. Contractors will adhere to the requirements of SCAQMD Rule 1403 during renovation/demolition activities. 07/25/10 uP:\DMJ0701\MND\4.0 Environmental Analysis.doe. 4-18 20A-69