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Tesoro del Valle (Phases A, B, C)
Draft Supplemental EIR

Traffic, Access and Circulation

According to the Traffic Engineer, the Modified 2012 Santa Clarita Valley Area Plan Alternative is
forecasted to generate the following trips during a typical weekday:

 390 net new trips during the AM peak hour (98 in, 929 out)
 520 net new trips during the PM peak hour (328 in, 192 out)
 4,950 net new trips over a 24-hour period (2,475 in, 2,475 out)

As measured over a 24-hour period, the Modified 2012 Santa Clarita Valley Area Plan Alternative
would generate approximately 87 percent of the trips anticipated to be generated by the Project.
Accordingly, the number of new vehicle trips added to the local street system related to the
Modified 2012 Santa Clarita Valley Area Plan Alternative would be proportionally less as
compared to the Project.

As shown on Table 6-5, Summary of Volume-to-Capacity Ratios and Levels of Service AM and
PM Peak Hours Los Angeles County Intersections: Modified 2012 Santa Clarita Valley Area Plan
Alternative, the changes in the calculated volume to capacity ratios at one of the County
intersections (The Old Road/I-5 Freeway SB Ramps) due to the Modified 2012 Santa Clarita
Valley Area Plan Alternative would be considered significant in the Existing + Project condition
during the PM peak hour. As implementation of potential mitigation would require approval from
Caltrans, the potential traffic impact is considered significant and unavoidable. Direct impacts
due to the Modified 2012 Santa Clarita Valley Area Plan Alternative at the remaining six County
intersections are considered to be less than significant.

As shown in Table 6-6, the changes in the calculated volume to capacity ratios at one of the four
City intersections (McBean Parkway/Copper Hill Drive) due to the Modified 2012 Santa Clarita
Valley Area Plan Alternative would be considered significant in the Existing + Project condition
during the AM and PM peak hours. Direct impacts due to the Modified 2012 Santa Clarita Valley
Area Plan Alternative at the remaining three City intersections are considered to be less than
significant.

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