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*AV : 11-1 It WA <br />3.11 MINERAL RESOURCES <br />Would the project: <br />a) Result in the loss of availability of a known mineral resource that would be a value to the region <br />and the residents of the state? <br />No Impact. The California Surface Mining and Reclamation Act of 1975 maps aggregate resources into four <br />mineral (source zones: <br />■ MRZ-1. Adequate information indicates that no significant mineral deposits afe present of likely to be <br />present. <br />■ MRZ-2. Adequate information indicates that significant mineral deposits are present of there is a high <br />likelihood for their presence, and development should be controlled. <br />■ MRZ-3. The significance of mineral deposits cannot be determined from the available data. <br />■ MRZ-4. There is insufficient data to assign any other MRZ designation. <br />Based on the California Geological Survey's Generalized Aggregate Resource Classification Map of Orange <br />County, the project site is in MRZ-3 (CGS 1981). However, there are no known mineral resources recovery <br />sites or operations in the City of Santa Ana. Both replacement park sites were previously developed as <br />residential uses and are not compatible with any mining or quaff operations. Therefore, no impact to known <br />mineral (source availability would occur. No mitigation measures are required. <br />b) Result in the loss of availability of a locally important mineral resource recovery site delineated on <br />a local general plan, specific plan or other land use plan? <br />No Impact. The project site is in an urban area. It is highly unlikely that mining would be conducted on, or in <br />the vicinity of the project site, therefore, a less than significant impact is anticipated. No mitigation measures <br />are required. <br />3.12 NOISE <br />Noise is defined as unwanted sound and is known to have several adverse effects on people, including heaving <br />loss, speech and sleep interference, physiological responses, and annoyance. Based on these known adverse <br />effects of noise, the federal government, the State of California, and the City of Santa Ana have established <br />criteria to protect public health and safety and to prevent disruption of certain human activities. <br />Characterization of noise and vibration, existing regulations, and calculations for construction noise and <br />vibration levels can be found in Appendix C to this Initial Study. <br />Terminology and Noise Descriptors <br />The following are brief definitions of terminology used in this chapter: <br />75C-102 <br />