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LSA ASSOCIATES, INC. INITIAL STUDYIMITIGATED NEGATIVE DECLARATION JULY 2010 FIRST STREET BRIDGE REPLACEMENT PROJECT CITY OF SANTA ANA and operation of the proposed project. This impact is considered less than significant, given its limited nature, and no mitigation is required. G. Comply with federal, state and local statutes and regulations related to solid waste? No impact. The proposed project will be in compliance with State and federal laws related to solid waste. No solid waste will be generated during the operational phase, and demolition activities will comply with the County's Source Reduction Ordinance. No impact is expected, and no mitigation is required. XVII. Mandatory Findings of Significance A. Does the project have the potential to degrade the quality of the environment, substantially reduce the habitat of a fish or wildlife species, cause a fish or wildlife population to drop below setf- sustaining levels, threaten to eliminate a plant or animal community, reduce the number or restrict the range of a rare or endangered plant or animal or eliminate important examples of the major periods of California history or prehistory? Less than significant impact with mitigation. Based on this analysis, the proposed project will not degrade the quality of the natural environment, significantly impact sensitive biological resources, nor will it destroy archaeological or paleontological resources. There are no known biological, archeological, or paleontological resources on or in the vicinity of the project site and, therefore, the proposed project has no potential to physically interfere with these resources. No sensitive wildlife species, plants, or animal communities are present on site or in the vicinity of the site. However, some marginal suitable habitat exists on the site that may by used by some species. Therefore, incorporation of the minimization measures BIO -1 and BIO -2 will be incorporated prior to construction activities. The proposed project occurs in an urban built -out environment and thus is not anticipated to have the potential to degrade the overall quality of environment. Mitigation Measures BIO -I and BIO -2 will reduce any potentially significant impacts to a level below significance. B. Does the project have impacts that are individually limited but cumulatively considerable? ("Cumulatively considerable" means that the incremental effects of a project are considerable when viewed in connection with the effects of past projects, effects of other current projects and the effects of probable future projects.) Less than significant impact. The proposed bridge replacement and road widening has a very limited impact area. Project impacts are confined to the project construction limits and are temporary in nature in that they only occur during construction. The only operation impacts requiring mitigation are noise impacts that will be mitigated by the incorporation of sound barrier walls into the project design. All other environmental parameters either return to their existing condition or are improved by the project (e.g. air quality, water quality, flood potential, traffic). These beneficial effects, when considered with other projects in the area do not pose any potential to result in cumulative effects because the project area is not particularly sensitive because it is highly urbanized and the project contributes only nominally to impacts under all environmental parameters. 07/25/10 «P:\DMJ070]\MND\4.0 Environmental Analysis.doc» 'kil "MOR 4-44