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Central Parkway. This north-south arterial at the west edge of the project site will be improved when lots fronting the street are developed, as recommended by the CSD and the Mountain House Neighborhood "F" Project Initial Study and Mitigated Negative Declaration, SCH#90020776. Mascot Boulevard. For this east-west arterial at the south end of the project site, the Master Plan calls for the ultimate construction of four lanes occurring on a phased basis during community buildout. As phases of this subdivision progress, Mascot Boulevard will ultimately be extended to Central Parkway. Specific intersection improvements where Mascot Boulevard connects to other project roadways may be appropriate based on traffic safety considerations. In particular, the Mountain House Neighborhood "F"Project Initial Study and Mitigated Negative Declaration, SCH #90020776 specifies as one of its required mitigation measures that, to accommodate the northbound dual left-turn lanes on Mountain House Parkway, Mascot Boulevard is to be constructed as a four-lane facility between Mountain House Parkway and the first residential access point to the west of De Anza Boulevard. Grant Line Road. Grant Line Road is an existing east-west arterial south of and outside the project site. The traffic study completed for the applicant concluded that some intersection improvements at the intersection of Grant Line Road and Mountain House Parkway would be warranted during buildout of the proposed project. Interstate 205 Interchange. An interchange currently exists at Mountain House Parkway and 1-205. The traffic study completed for the applicant indicates that the project would result in peak hour trips for the eastbound 1-205 on-ramps that would warrant temporary signalization. No other specific improvements were found necessary for the proposed project. According to the Master Plan, specific improvements on the 1-205 interchange would be triggered with subsequent subdivisions within the Mountain House New Community. The initiation of the Caltrans' Project Study Report (PSR) for the interchange would also be triggered with subsequent subdivisions, but not with the proposed project. Other Internal Roads. New internal streets within Neighborhood "F" would be constructed as the project builds out. Some of these would be cul-de-sacs and others would be collectors that connect to other collectors and arterials (see Figure 4). Offsite Roadway Improvements. The proposed project will have an impact on roadways outside of the Mountain House New Town area. The Mountain House Neighborhood"F" Project Initial Study and Mitigated Negative Declaration, SCH #90020776 notes that, with the construction of all recommended mitigation measures specified in the Master Plan EIR and the proposed project's contribution to the costs for off-site improvements,the impact of the proposed project on offsite roadways would be reduced to less than significant levels. However, the document also states that two new cumulatively impacted roadways have been identified using the 2010 travel demand model: Tracy Boulevard, north of Lammers Road; and Grant Line Road (new), east of Byron Road. To address these impacts, the Mountain House Neighborhood"F"Project Initial Study and Mitigated Negative Declaration, SCH #90020776 calls for the implementation of the following mitigation measures: 1) the widening of Tracy Boulevard from two to four lanes to accommodate cumulative, regional traffic volume increases; and 2) either the widening of Grant Line Road from four to six lanes, as necessary to accommodate cumulative, regional traffic volume increases, or changing the level of service standard for the segment, allowing the use of LOS D rather than LOS C as the threshold of significance. Widenings would be funded through the participation of other jurisdictions and the County Traffic Impact Mitigation Fee (TIMF) in which Mountain House will participate. The project will participate in its fair-schare of -8-