2015-004 - Santa Ana-Garden Grove Fixed Guideway Project

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Santa Ana — Garden Grove Fixed Guideway Project Findings and Facts in Support of Findings and Statement of Overriding Considerations Mitigation Measure CR1 Treatment of Undiscovered Resources — The contractor shall notify construction personnel of the potential for encountering significant archaeological and paleontological resources along the alignment, and instructed in the identification of fossils and other potential resources. All construction personnel shall be informed of the need to stop work on the project site until a qualified archaeologist or paleontologist has been provided the opportunity to assess the significance of the find and implement appropriate measures to protect or scientifically remove the find. If human remains are encountered during construction, all work shall cease in the area of potential affect and the Orange County Coroner's Office shall be contacted pursuant to procedures set forth in Public Resources Code Section 5097 et seq. and Health and Safety Code in Sections 7050.5, 7051, and 7054 with respect to treatment and removal, Native American involvement, burial treatment, and re- burial, if necessary. A fifty -foot buffer, or more if deemed appropriate by the principal investigator, shall be established and work outside the buffer may resume. B. Hazards and Hazardous Materials (Hazardous Sites) (page 3 -114 of the EA/DEIR) Potential Impact: Three properties identified as potentially hazardous sites would be acquired as part of O & M Facility. The acquisition of these properties would require Phase I Environmental Site Assessments to ascertain if employees working at the O & M Facility would be exposed to toxic levels of hazardous materials. Therefore, without mitigation, significant impacts related to hazardous sites would occur. Finding: Changes or alterations have been required in, or incorporated into, the proposed project which would mitigate or avoid the significant effects on the environment as identified in the REA/FE I R. Facts in Support of Finding: The proposed project would require limited acquisition of property, which could have the potential to contain hazardous materials. The majority of potentially hazardous properties identified within a 0.25 -mile radius of the project alignment would not be acquired or disturbed and do not require further investigation. However, three properties identified as potentially hazardous sites would be acquired as part of the O & M Facility, including All Car Auto Parts located at 2002 West 5th Street, SA Recycling located at 2006 West 5th Street, and American Auto Wrecking located at 1908 West 5th Street. Implementation of Mitigation Measure HAZ1 would reduce impacts related to hazardous sites to less than significant. Mitigation Measure HAZ1 A Phase I Environmental Site Assessment shall be prepared for the following sites • All Car Auto Parts located at 2002 West 5th Street • SA Recycling located at 2006 West 5th Street • American Auto Wrecking located at 1908 West 5th Street 19 January 2015