75A - PH BRISTOL ST MEMORY LN PROJECT

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ENVIRONMENTAL IMPACT REPORT ADDENDUM Bristol Street and Memory Lane Intersection Improvements — Project No. 17-6883 Certified 1990 FEIS/EIR Mitigation Measures: T-1 If potential archaeological resources are encountered during grading, all work will be halted in that particular location until a qualified archaeologist can evaluate the significance of the recovered materials. Mitigation Measures: No additional mitigation measures are required. b) Cause a substantial adverse change in the significance of an archaeological resource pursuant to § 15064.5? Due to the limited area of disturbance, within an existing developed and urban area, and limited depth of proposed excavations, the potential to uncover archaeological resources is considered low. The proposed Project would not result in archaeological impacts greater than previously analyzed in the 1990 FEIS/EIR. Certified 1990 FEIS/EIR Mitigation Measures: Refer to 1990 FEIS/EIR Mitigation Measures T-1. Mitigation Measures: No additional mitigation measures are required. C) Directly or indirectly destroy a unique paleoutological resource or site or unique geologic feature? As documented in Chapter VI, Resources Element, of the County of Orange General Plan, the Project site is not located in an area of paleontological sensitivity. Soils occurring in the Project area are San Emigdio a Typically, these deposits are less than 10,000 years old, and not likely to contain important fossils? No greater impacts to paleontological resources than previously analyzed in the 1990 FEIS/EIR would result from Project implementation. Certified 1990 FEIS/EIR Mitigation Measures: No 1990 FEIS/EIR mitigation measures are applicable. Mitigation Measures: No additional mitigation measures are required. d) Disturb any human remains, including those interred outside of dedicated cemeteries? The Project site is located within a highly -urbanized area within the City of Santa Ana. Cathedral Memorial Gardens is located approximately 2 miles north-west of the Project site. In the event that human remains are uncovered during grading or excavation, contractors are required to comply with the procedures and requirements set forth in the California Health and Safety Code Section 7050.5 and CPRC Section 2098.98. The County Coroner and, in the event that the remains are Native American, the Native American Heritage Commission would be notified and, in turn, would notify those persons believed to be most likely descended from the deceased for appropriate disposition of the remains. The proposed Project would not result in an impact to human remains greater than previously analyzed in the 1990 FEIS/EIR. Certified 1990 FEIS/EIR Mitigation Measures: No 1990 FEIS/EIR mitigation measures are applicable. Mitigation Measures: No additional mitigation measures are required. 3.6 GEOLOGY AND SOILS This section corresponds with the following 1990 FEIS/EIR, Section IV, Environmental Consequences and Mitigation Measures, subsections: • Subsection A, Landform Modification; • Subsection B, Seismic Hazards; 9 United States Department of Agriculture, Web Soil Survey, https://websoilsurvey.se.egov.usda.gov/AppfwebSoil Survey.aspx, accessed August 2, 2017. 9 Ibid. Draft I November 2017 3-9 Environmental Consequences 75A-38