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MOUNTAIN HOUSE NEIGHBORHOOD'F"PROJECT INITIAL STUDY reduce vehicle queues and ensure adequate mid-block roadway capacity. The technical information that supports these conclusions follows. Land Use Changes The level of development proposed for Neighborhood"F"was found to be slightly greater than what was evaluated in the Master Plan EIR due to changes in Neighborhood"F"boundaries. However, the expected buildout of the entire Mountain House New Community remains consistent with the Master Plan. A comparison of the current development assumptions and those assumed for the Master Plan EIR are summarized in Table V-4. Note that Optrans evaluated maximum buildout to ensure that roadways had adequate capacity to accommodate"worst case" scenario. More detailed discussion regarding land use assumptions can be found under(b)below. Neighborhood "F" Trip Generation Table V-5 details the trip generation based upon the Master Plan EIR and the current proposed project for Neighborhood"F". The residential component for Neighborhood"F"would generate slightly more traffic than envisioned in the Master Plan EIR. Relative to non-residential traffic,Neighborhood"F"would generate slightly less traffic. The overall buildout is consistent with the Master Plan, some of the non- residential uses that were not allocated to residential neighborhoods in the Master Plan EIR are now included within the Neighborhood"F"project. Specifically, 35.39 acres of light industrial and 27.24 acres of office uses have been included for this proposed project. Neighborhood"F"would generate about 2,420 AM peak hour and 3,033 PM peak hour trips. The 1994 Master Plan EIR assumed 2,478 AM and 3,114 PM peak hour trips. Table V-5 details the trip generation for the various land use categories proposed for the project. Existing-Plus-Project Levels of Service Table V-6 details the existing-plus-project levels of service. A review of the peak hour operations along Mountain House Parkway found that three intersections would experience sub-standard levels of service. A sub-standard level of service is E or F for intersections. These include: Mountain House Parkway at the I-205 eastbound(EB)ramps, Mountain House Parkway at Grant Line Road and Mountain House Parkway at Mascot Boulevard. Sponsor-Recommended Mitigation Measures The traffic assessment for Neighborhood"F", conducted by Optrans, identifies a series of roadway and intersection improvements required to reduce impacts to less-than-significant levels. A comprehensive review of these recommendations was conducted. The assessment found that all roadway and intersection recommendations were consistent with the Master Plan EIR but that some recommended improvements should be broadened to more effectively mitigate project impacts. The project sponsor recommended the following mitigation measures: 1. Signalize the intersection of Mountain House Parkway and the eastbound ramps of I-205. 2. Add additional lanes(capacity)at the intersection of Mountain House Parkway and Grant Line Road. 3. Signalize and add lanes at the intersection of Mountain House Parkway and Mascot Boulevard. C:VOBS\SICVNMAL MUDYTINALMMALMDY-PARnMOC(MWOD) 56 V.F. TRANSPORTATION/tRAFFIC