2009-025 - Final Environmental Impact Report No. 2004-02

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• Updated Sewer Demand Increase in Sewer Demand from the Proposed Project Wastewater Demand Gallons per Day (gallons per day) Previous wastewater demand 282,608 (per EIR) Reduction in sewer demand from -6,154 304,204 -282 608 removed project components , 21,596 Additional sewer demand from +27,750 185-room hotel Total updated sewer demand 304,204 As detailed in the table above, the reduction in sewer demand from the removed project components, plus the addition in sewer demand from the proposed hotel, result in an updated sewer demand of 304,204 gallons per day. The proposed project will increase the sewer demand by 21,596 gallons per day compared to the previous project. The City has indicated that the proposed hotel project sewer discharge need will be addressed by a new 12" sewer main, which has recently been constructed. As detailed in the Domestic Sewer Technical Report for MacArthur Place, a 12" line has a flow rate of 0.405 million gallons per day (MGD). The project, as addended, would result in a sewer demand of 304,204 gallons a day, which is less than .0405 million gallons per day capacity. The project will have no new or more severe impacts beyond those addressed and mitigated in the EIR. c) Require or result in the construction of new storm water drainage facilities or expansion of existing • facilities, the construction of which could cause significant environmental effects? (No Substantial Change from Previous Analysis) As detailed in the EIR, the previous project was to be entirely developed with impermeable surfaces. The proposed project will also be entirely developed with impermeable surfaces. Thus, no adverse impact on the existing storm water drainage facilities is anticipated because the project as proposed will not significantly differ in terms of runoff from the project analyzed in the EIR. The project will have no new or more severe impacts beyond those addressed and mitigated in the EIR. d) Have sufficient water supplies available to serve the project from existing entitlements and resources or are new or expanded entitlements needed? (No Substantial Change from Previous Analysis) Mitigation Measures were designed to minimize potential impacts to utilities and service systems. The project will have no new or more severe impacts beyond those addressed and mitigated in the EIR. As detailed in the EIR, the City of Santa Ana Water Department provides water service to the MacArthur Place South project area. The data from the Walden and Associates Domestic Water Technical Report for MacArthur Place (Amendment No. 1) dated March 3, 2004 and Amended November 19, 2004 was utilized to calculate the proposed project impacts on water demand. The following components will not be a part of the proposed project: retail, restaurant, and commerciaUresidential components of the Cinema lofts. The water demand calculation for those uses is detailed below. As identified in the table below, the land uses eliminated will result in a reduction in water demand of 7,504 gallons per day. • Resolution No. 2009-025 Page 47 of 95 MacArthur Place South EIR Addendum 49