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Administrative Draft Environmental Impact Report Gill Medical Center Project potential hazard and hazardous materials issues similar to that of the proposed Project (with the exception of the former gas well at the Project site). Should a gas well or other significant environmental hazard be identified at the alternative site, the site is large enough that avoidance could be implemented while accommodating the project. Therefore, Alternative 4 is superior to the proposed Project for the issue of hazards and hazardous materials. 6.3.9 Hydrology and Water Quality 6.3.9.1 Alternative 1: No Project Alternative The draft EIR finds that with implementation of draft EIR recommended mitigation measures Project impacts to hydrology and water quality would be less than significant with mitigation incorporated. Under the No Project Alternative, none of the proposed Project impacts that require the above mitigation would occur.Therefore Alternative 1 is superior to the proposed Project for the issues of hydrology and water quality. 6.3.9.2 Alternative 2: Reduced Project— Phase 1 Hospital Only Alternative 2 would limit Project development to the Phase 1 Hospital and related supporting circulation and parking as well as onsite water, wastewater and storm water infrastructure.As a reduced project, Alternative 2 would be subject to the same hydrology and water quality mitigation measures as the proposed Project (discussed immediately above). From a hydrology and water quality perspective, the primary difference of Alternative 2 compared to the proposed Project would be reduced demand for, and therefore reduced onsite construction and operation of, potable water, wastewater treatment and storm water retention utilities. Given that hydrology and water quality impacts from full Project buildout was found to be less than significant with mitigation incorporated, a reduced project that only includes Phase 1 improvements is also expected to be less than significant with mitigation incorporated.Thus, due to the reduced need for the construction and operation of onsite utilities, Alternative 2 is superior for the issue of hydrology and water quality. 6.3.9.3 Alternative 3: Connect to Public Utilities - Water, Wastewater and Storm Water Draft EIR proposed Project findings related to hydrology and water quality are summarized above in section 6.3.9.1. Under Alternative 3, the onsite areas reserved for water, wastewater and storm water utility construction would no longer be required and the Project development footprint could be reduced accordingly. This would amount to an approximately 3.7 acre, or 8.7 percent reduction, in site development compared to the proposed Project with proportional reduction in potential construction generated hydrology and water quality impacts. As shown on Figure 6-2, all pipeline extensions required to connect the Project site with the nearest available utilities would occur within existing West Lane and Eight Mile Road right-of-way. Several miles of Alternatives 6-18 October 2021