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Mr. Bill Apple, Associate Planner City of Santa Ana, Planning Division March 11, 2008 Page 7 c. Hydrology and Soils Analysis It is URS' understanding that the project proponent (landowner) has prepared a soils/geotechrucal study for the project addressed herein. It is assumed that the substance of this report is sufficient to meet CEQA reporting requirements. The pertinent sections of the already completed soils/geotechnical study will be excerpted into the EIR. The results of the analysis will include a discussion of the general hydrology, geology, geomorphology, groundwater, and geologic and seismic hazards to the proposed project, and the effects of the proposed project on site geologic and mineral resources, if any. The analysis will discuss if the project would expose people or structures to potential substantial adverse effects involving changes to site hydrology; rupture of an earthquake fault; strong seismic shaking; seismic related ground failure, including liquefaction; substantial soil erosion, unstable ground from land sliding, lateral spreading, subsidence, liquefaction or collapse, or expansive soils. d. Hazards and Hazardous Material Analysis It is understood that a Phase I Environmental Site Assessment (ESA) has been prepared by the project proponent. URS will review the Phase I ESA to evaluate the potential for environmental impairment or liabilities on the site. Our review will determine if that the new U.S. Environmental Protection Agency (EPA) Rule on All Appropriate Inquiry (AAI) with the resulting revisions to the ASTM E 1527-05 has been addressed. The AAI Rule expands the records review requirements by increasing the search distance beyond the former ASTM E 1527-00, incorporation mandatory searches for engineering and institutional controls, and mandatory review of local government and Indian tribal records. URS will confirm that the historical sources and data gaps identified for the project site has been documented and their significance reported. The results of the completed Phase I ESA will be incorporated into the applicable sections of the EIR. During the course of our Phase I ESA review, if URS determines that the previous Phase I ESA was inadequate, then we prepare a letter report that addresses the new U.S. EPA Rule on All Appropriate Inquiry with the resulting revisions to the ASTM E 527-05 are addressed. An additional lump sum fee for this work has been included in the project budget. During the course of our Phase I ESA review and/or Phase supplemental report, URS will apprise the City of any findings that could indicate the need for further investigation of any hazardous conditions on the project site. URS understands that the current use for the project site includes the previously described bungalow, detached garage structure, and associated orange grove. Depending on the condition of the project site, URS will be able to provide recommendations on whether further investigation is necessary, including the preparation of a Phase II EA. The cost of preparing a Phase II ESA would be based on a time -and -materials basis that has not been included in this scope of work or project budget.