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ER No. 2018-72, AA No. 2018-04, nA No. 2018-02, & TPM No. 2018-01, — MainPlace
<br />Transformation Project
<br />May 13, 2019
<br />Page 12
<br />The 1983 EIR considers the environmental impacts relating to land use, soils and geology,
<br />hydrology, biological resources, archaeology, traffic and circulation, noise, air quality, aesthetics
<br />(including shade/shadow, solar glare, and illumination), housing/population, John Wayne Airport,
<br />public services and utilities (including natural gas, electricity, communications, water, sewer, solid
<br />waste, police protection, and fire protection), energy conservation, irreversible environmental
<br />changes, and growth inducement. It determined that the original, 1983 entitlements would not
<br />result in any potentially significant impacts relating to soil and geology, hydrology, archaeology,
<br />noise, air quality, housing/population, John Wayne Airport, natural gas, electricity,
<br />communications, water, sewer, and solid waste.
<br />In 1996, the City prepared Addendum (ER 96-033) to the Environmental Impact Report for
<br />Proposed MainPlace/Santa Ana Expansion to the 1983 EIR to evaluate a proposed expansion of
<br />the original, 1983 entitlements' commercial uses. The 1996 Addendum evaluated each topical
<br />issue addressed in the 1983 EIR and included updated air quality and traffic analyses. The 1996
<br />Addendum concluded that no subsequent environmental impact report was required under CEQA
<br />because the proposed retail expansion did not result in new or substantially more severe significant
<br />impacts than were disclosed in the 1983 EIR. While the 1996 proposed retail expansion was never
<br />fully implemented, in 2000 the City relied on the 1996 Addendum and 1983 EIR to approve a site
<br />plan and vesting tentative parcel map. These entitlements permitted up to 1,509,255 square feet
<br />of retail, 1,500,000 square feet of office space, and 400 hotel rooms. A final parcel map consistent
<br />with the 2000 entitlements was approved and recorded in October 2002. However, the
<br />Improvements related to the parcel map and 2000 entitlements were never implemented.
<br />Mitigation Measures and Addendum Conclusions
<br />The City has prepared an updated Mitigation Monitoring and Reporting Program (MMRP) for the
<br />MainPlace Specific Plan. The original MMRP contained 19 mitigation measures, of which 8 are
<br />ongoing and applicable and 11 are no longer applicable because they have been completed or
<br />have been superseded by changes to various laws or codes.
<br />An updated MMRP has been prepared to for the MainPlace Transformation Project Specific Plan.
<br />The mitigation measures from the 1983 EIR include measures that are not applicable to the
<br />proposed MainPlace Mall Transformation Project, require modifications to reflect the current status
<br />of development at the Project site, or have been implemented and do not need to be carried
<br />forward. The 1996 Addendum did not identify any additional mitigation measures. The 1983 EIR
<br />mitigation measures are listed in the updated MMRP after each topical section. Where any
<br />clarifications to the 1983 EIR mitigation measures were necessary, strikeout text is used in the
<br />updated MMRP to show deleted wording and underline text is used to indicate wording that has
<br />been added.
<br />75D-28
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