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Community Plan Exemption Checklist <br />City of Santa Ana Gary Avenue Business Park Project <br />d) Be located on expansive soil, as defined in in Table 18-1-B of the Uniform Building Code (1994), <br />creating substantial risks to life or property? <br />No New Impact. The Preliminary Geotechnical Investigation describes that the onsite soils have a medium <br />to high expansion potential. The Preliminary Geotechnical Investigation provides CBC seismic design criteria <br />that are specific to the onsite soils and the potential for expansion. Compliance with the CBC would require <br />proper construction of building footings and foundations so that it would withstand the effects of potential <br />ground movement, including liquefaction. Also, the Project includes over -excavation and re -compaction of <br />the site soils to at least 7.5 and 3 feet below finished or existing grade (whichever is deeper) within building <br />and pavement/flatwork areas, respectively, which would be conducted pursuant to the requirements of the <br />CBC. Compliance with the requirements of the CBC and City's municipal code for structural safety would <br />provide that no new impacts related to expansive soils would occur. <br />e) Have soils incapable of adequately supporting the use of septic tanks or alternative wastewater <br />disposal systems where sewers are not available for the disposal of wastewater? <br />No New Impact. The Project would be connected to sewer and would not require the use of septic tanks or <br />alternative wastewater disposal systems. Therefore, the Project would result in no new impacts on soils <br />incapable of adequately supporting the use of septic tanks. <br />f) Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? <br />No New Impact. Although the GPU did not identify records of fossils from within the City, the Natural History <br />Museum of Los Angeles County (LACM) has records of 16 fossil localities within a five -mile radius of the City, <br />with the closest fossil locality approximately 2.5 miles south of the City. According to the GPU EIR, the Project <br />site is located within an area with a low potential for paleontological resources. However, as the Project <br />includes over -excavation and re -compaction of the site soils to at least 7.5 feet below the existing grade <br />into potentially native soils, GPU EIR Mitigation Measure GEO-2 would be required to be implemented to <br />reduce potential impacts consistent with the GPU EIR. Therefore, the Project would result in no new impacts <br />that would directly or indirectly destroy a unique paleontological resource or site or unique geologic feature. <br />Conclusion <br />With regards to the issue area of geology and soils, the following findings can be made: <br />1. No peculiar impacts to the Project or its site have been identified. <br />2. There are no potentially significant off -site and/or cumulative impacts which were not discussed by <br />the GPU EIR. <br />3. No substantial new information has been identified which results in an impact which is more severe <br />than anticipated by the GPU EIR. <br />Uniformly Applied Development Policies or Standards (DP/S) <br />California Building Code, as included in the City's Municipal Code as Chapter 8, Article 2, Division 1 <br />GPU EIR Mitigation Measures Applicable to the Project <br />GEO-1 High Sensitivity. Projects involving ground disturbances in previously undisturbed areas mapped <br />as having "high" paleontological sensitivity shall be monitored by a qualified paleontological <br />monitor on a full-time basis. Monitoring shall include inspection of exposed sedimentary units <br />during active excavations within sensitive geologic sediments. The monitor shall have authority to <br />temporarily divert activity away from exposed fossils to evaluate the significance of the find and, <br />if the fossils are determined to be significant, professionally and efficiently recover the fossil <br />specimens and collect associated data. The paleontological monitor shall use field data forms to <br />record pertinent location and geologic data, measure stratigraphic sections (if applicable), and <br />collect appropriate sediment samples from any fossil localities. <br />57 <br />