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City of Pleasanton Recycled Water Project CEQA Addendum Chapter 3 Environmental Analysis This chapter evaluates the potential for the proposed pipeline alignment changes to have new significant impacts on the environment that were not previously addressed in the IS/MND, substantially more severe environmental impacts than were addressed in the IS/MND or trigger the new information standards stated in CEQA Guideline section 15162. The purpose of this review is to evaluate the categories in terms of any "changed condition" (i.e. changed circumstances, project changes, or new information of substantial importance) that may result in a changed environmental result. A determination that no such changed condition exists does not necessarily mean that the overall project will have no potential impacts in an environmental category, but that the change to the Project will result in a reduction or no change in the condition or status of the impact since it was analyzed and addressed with mitigations in the IS/MND. 3.1 Explanation of Environmental Review Process Table 3 evaluates any potential environmental impacts from the construction and operation of the proposed pipeline alignment changes with the environmental impacts of the original pipeline alignment as discussed in the IS/MND. This comparative analysis has the following elements, which are the basis for the discussion in Table 3 below: (A) Were the Impact(s) were Analyzed in the IS/MND? This column provides a cross-reference to the pages of the IS/MND where information and analysis may be found relative to the environmental issue listed under each topic. (B) What were the Environmental Impact Conclusions in the IS/MND? This column provides a summary of the original environmental impact conclusions for implementing the Proposed Project in the IS/MND. (C) Do Proposed Changes Involve New Significant Impacts or Substantially More Severe Impacts? Pursuant to Section 15162(a)(1) of the CEQA Guidelines, this column indicates whether the new pipeline alignments that are part of the proposed project change will result in new significant impacts that have not already been considered and mitigated by the IS/MND or a substantial increase in the severity of a previously identified significant impact. (D) Any New Circumstances Involving New Significant Impacts or Substantially More Severe Impacts? Pursuant to Section 15162(a)(2) of the CEQA Guidelines, this column indicates whether there have been changes to the circumstances under which the project is being undertaken which have occurred subsequent to the City's adoption of the IS/MND that would result in the revised pipeline facilities having new significant environmental impacts that were not considered in the IS/MND or that substantially increase the severity of a previously identified significant impact. (E) Any New Information Requiring New Analysis or Verification? Pursuant to Section 15162(a)(3)(A-D) of the CEQA Guidelines, this column indicates whether new information of substantial importance which was not known and could not have been known with the exercise of reasonable diligence at the time the City adopted the IS/MND is available requiring an update to the analysis of the IS/MND because the new information shows that: (1) The project will have one or more significant effects not discussed in the IS/MND; or December 2014 3-1