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above. The City of Santa Ana hereby finds that implementation of the mitigation measures is <br /> feasible, and the measures are therefore adopted. <br /> 4. Geology and Soils <br /> Impact 5.6-4: Future development that would be accommodated by the General Plan <br /> Update could impact known and unknown paleontological resources. <br /> Paleontological resources are recognized as nonrenewable and therefore receive protection <br /> under the California Public Resources Code and CEQA. Adoption of the GPU in itself will not <br /> directly affect paleontological resources. Long-term implementation of the GPU land use plan <br /> could allow development (e.g., infill development, redevelopment, and revitalization/restoration), <br /> including grading, of known and unknown sensitive areas. Grading and construction activities of <br /> undeveloped areas or redevelopment that requires more intensive soil excavation than in the past <br /> could potentially disturb paleontological resources. Therefore, future development that would be <br /> accommodated by the GPU could potentially unearth previously unrecorded resources. Review <br /> and protection of paleontological resources are also afforded by CEQA for individual development <br /> projects that would be accommodated by the GPU, subject to discretionary actions that are <br /> implemented in accordance with the land use plan of the GPU. Fossil localities have been found <br /> in the vicinity of the plan area, although not in the plan area itself. <br /> Mitigation Measures GEO-1 through GEO-3 prescribe requirements for monitoring based on the <br /> sensitivity of sites for paleontological resources. Under GEO-1, areas that range from high to low <br /> sensitivity are required to prepare a Paleontological Resources Monitoring and Mitigation Plan. <br /> With adherence to mitigation measures GEO-1 through GEO-3, Impact 5.6-4 would be less than <br /> significant. <br /> Mitigation Measures <br /> GEO-1 High Sensitivity. Projects involving ground disturbances in previously undisturbed <br /> areas mapped as having "high" paleontological sensitivity shall be monitored by a <br /> qualified paleontological monitor on a full-time basis. Monitoring shall include <br /> inspection of exposed sedimentary units during active excavations within sensitive <br /> geologic sediments. The monitor shall have authority to temporarily divert activity away <br /> from exposed fossils to evaluate the significance of the find and, if the fossils are <br /> determined to be significant, professionally and efficiently recover the fossil specimens <br /> and collect associated data. The paleontological monitor shall use field data forms to <br /> record pertinent location and geologic data, measure stratigraphic sections (if <br /> applicable), and collect appropriate sediment samples from any fossil localities. <br /> GEO-2 Low-to-High Sensitivity. Prior to issuance of a grading permit for projects involving <br /> ground disturbance in previously undisturbed areas mapped with "low-to-high" <br /> paleontological sensitivity, the project applicant shall consult with a geologist or <br /> paleontologist to confirm whether the grading would occur at depths that could <br /> encounter highly sensitive sediments for paleontological resources. If confirmed that <br /> Santa Ana General Plan Update <br /> CE 5T ac an Statement 32 — 55 2 <br /> Of ri ing onsiderations -32- 61 /Rer�0 2 1 <br />