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1997 Traffic Study In 1997,Korve Engineering also calculated future LOS for the intersections,assuming construction of approved,but not yet built, industrial development in the business park,plus a certain amount of housing growth in nearby Tracy. The short-term cumulative growth assumptions were consistent with the traffic analysis that was completed previously in 1994 for the Special Purpose Plan (see Chapter III, "Transportation Improvements," in the Special Purpose Plan). The Korve Engineering study found that cumulative,short-term growth within the Special Purpose Plan boundaries, plus adjacent residential subdivisions, would generate traffic that would degrade the existing LOS at some of the intersections. The 1-580 southbound ramps at Mountain House Parkway and the Mountain House Parkway/Schulte Road intersection were projected to be degraded from LOS A to LOS C during the evening peak hour. The 1-580 northbound ramps at Mountain House Parkway were projected to degrade to LOS B due to the additional development. Both LOS B and LOS C are indicative of acceptable levels of vehicular delay. In the 1997 traffic study,Korve Engineering estimated the amount of further industrial development, in addition to the short-term,cumulative growth within the Special Purpose Plan area,that could be accommodated without triggering the need for major interchange improvements such as widening the overpasses.The additional amount of industrial and service commercial development that could be accommodated was calculated based on a minimum acceptable level of service of D at the five intersections. LOS D conditions are equal to a maximum allowable sum of critical turning volumes during peak periods at the intersections of 1,275 vehicles. The Korve Engineering study concluded that the intersections in the area of the business park could absorb the traffic generated by development of an additional 128 acres,beyond the development of approved but not yet constructed projects within the existing 1994 Special Purpose Plan. The analysis indicated that up to an additional 128 acres of typical industrial growth would generate traffic that would not cause unacceptable levels of delay at the intersections (not worse than LOS D). 2000 Traffic Study Table 1: Comparison of ADT Auto Auction and Other Trip Generation Korve has completed a study of the traffic -- impacts associated with the proposed ADT r. Daly , AMP u Auto Auction project. On its opening day, the Tn 'Trips _. psr ?Tnp's' Tracy ADT facility is expected to the generate Fremont Auto 2,357 180 208 the same number of trips (cars and trucks) as Auction' the Fremont Auto Auction. Within ten years, proposed 4,714 360 416 the Tracy facility is anticipated to double in ADT Auto traffic,so the"worst case"daily trip generation Auction used for the traffic study is 4,714 passenger car in Tracy equivalents(PCEs),double the amount of trips Notes: for the Fremont auction site (Table 1). passenger car Equivalents=cars and trucks Actual trip generation measured from the ADT Golden Gate Auto 93231-B0.spp00.%pd-224/00 -12-