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employment projections. The new information showed lower increases in projected regional residential development and employment for 2010. The new information does not result in significant effects not discussed within the MEIR, or impacts that are substantially more severe. Direct project traffic impacts are essentially unchanged and regional cumulative traffic impacts are essentially similar or of lower impact than the 1994 Master EIR. The independent traffic study prepared by Dowling &Associates for the Initial Study found substantial decreases in freeway and highway traffic on 7 of the 9 segments evaluated and small increases on two segments. All freeway/highway segment levels of service remained the same or improved in comparison to the MEIR traffic analysis. Of the 24 arterial road segments evaluated, 11 had similar levels of service, 11 had improved levels of service, and two, Grant Line Extension and Tracy Boulevard north of Lammers Road,had decreased levels of service. The few road segments with lower levels of service can be mitigated with measures similar to that proposed in the MEIR. The proposed Grant Line Road Extension which is currently projected to have LOS "D" in comparison to prior MEIR projections of LOS "C" can be mitigated by amending the LOS standard from"C"to "D" as was done for Grant Line Road within Mountain House, or by widening the road from four to six lanes. A portion of the proposed roadway within one-quarter mile of I-205 already is designated for a LOS "D"standard under the Tracy General Plan. Tracy Boulevard north of Lammers Road is projected to decrease in Level of Service from LOS "C"to LOS "D" in A.M. and LOS "E" in P.M. This impact can be mitigated by adding the roadway to the San Joaquin County Trak Impact Mitigation Fee (TIMF)program at the appropriate time for widening from two to four lanes. The added mitigation measures are to be incorporated into the environmental documentation for the Neighborhood F Project which will be tiered onto the MEIR. As such, there are no new significant effects or more severe significant effects related to regional, cumulative traffic growth sufficient to affect the adequacy of the 1994 Master EIR and require a supplemental or subsequent EIR. Analysis of the new cumulative growth information has shown that some roadway segments have improved levels of service that now require no mitigation improvements for 2010. However, it is expected that these improvements will still be needed in the future beyond 2010. The Master Plan and MEIR require a full traffic impact analysis for each subsequent Specific Plan; and at that time, additional traffic studies will be prepared for cumulative traffic impacts with an expanded time frame. An updated noise study for Neighborhood F was prepared using the updated traffic data in compliance with MEIR mitigation measure4.14-1. The noise study showed increased 60 and 65 db noise contours for Mascot Boulevard, De Anza Boulevard and Mountain House Boulevard. As a result,higher noise walls or greater setbacks than originally adopted are needed. Such new information was required by the MEIR to refine the general noise mitigation identified in the MEIR and previous SEIR. The proposed noise mitigation measures for Neighborhood F thereby fine tune previous mitigation measures and do not constitute new information of substantial importance requiring preparation of a supplemental or subsequent EIR. 21