SU0012766 - Laserfiche WebLink

Home Browse Search

n n intersections. inter sections identified in Tables - 13zil: where tile 1 . For roadways, potential measures include construction of a new roadway south of the proposed airport and parallel to Arch Airport Road and widening of Airport Way south of Charter Way to eight lanes. Potential improvements to intersections are summarized in Table 134A. All study area intersections can be mitigated to LOS D or better with the exception 'l of intersections at Arch-Airport Road and "BStreet and and Way and Eighth Street, which is ' almost 2 miles north of the project,cite. Both of these intersections have volume-to-capacity (UIQ ratios of 0.92, which are within 2% of a VIC of 90%, which would be LOS D. The cumulative analysis included increasing annual enplanements from 2 million to 4 million, adding 40 acres of commercial/industrial development at the Airport, buildout of the City of Stockton General Plan, and development of a major theme park. An updated traffic analysis by Rajappan &Meyer prepared in conjunction with the State Route 99/Arch Road interchange environmental documents assumed 85% buildout of the City of Stockton General Plan. Their analysis indicated that all intersections within the study area will operate at LOS D or better through 2020, which is 5 years beyond the planning period for the airport project. Because of the highly conservative nature of the assumptions built into the cumulative f analysis of the airport project and the fact that the updated analysis for the State Route 99/Arch Road interchange, which assumes 85% buildout of the City of Stockton General Plan indicates that LOS D can be maintained, it can be reasonably concluded that cumulative traffic impacts can be 'Ft mitigated to LOS D or better. The County acknowledges that many of the roadway improvements assumed to be in place during the planning period for the airport are currently unfunded. The specific analysis for these improvements is beyond the scope of the airport project and EIR. However, the County fully intends to participate in the evaluation and monitoring of traffic operating conditions at critical intersections. The Airport/County, developers, and/or successors-in-interest shall participate in their proportionate share of the cost for appropriate mitigation measures to ensure operating conditions remain at LOS D or better as development occurs. This is consistent with Mitigation Measure T-1 of the DEIR. Further, the County acknowledges that funding mechanisms for major roadway improvements in the area, including but not limited to the Arch-Sperry Corridor are urgently needed and the County is committed to establishing such funding mechanisms jointly with the City of l ' Stockton and Caltrans. Air Quality The cumulative air quality analysis conducted for this report is based on the traffic assumptions identified in the previous section. As shown in Table 13-5, cumulative impacts related to CO emissions are considered less than significant because CO concentrations are predicted to be below the 1-hour threshold of 20 ppm and the 8-hour threshold of 9 ppm. As shown in Table 13-6, cumulative development would result in emission increases equal to 77.7 pounds per day of ROG, Stockton Metropolitan Airport Master Plan Chapter 13. Cumulative Impacts Draft Environmental Impact Report 13-4 March 20, 1998