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%.W MouwAIN HousE PROPosED MACHADo TENTATIVE MAP 4. ENvatoNMENTAL CHECKLIST lk" 4.15 TRtmspoRTAnoNMR FFIc %W adjacent to the Specific Plan III area will be widened to four lanes in two years(EDAW, 2005b). The California Department of Transportation(Caltrans)reported that,in 2003,the annual average daily traffic volume on I-205 was 110,000 vehicles per day(vpd)east and west of Mountain House Parkway. Truck travel on I-205 is relatively high(approximately 15 percent of total traffic)in the project study area(EDAW,2005b). The I-580/1-205 corridor has experienced unprecedented traffic congestion,delays,and backups in the past two decades. The increase in traffic along the I-580/1-205 freeway corridor has been approximately 4 to 5 percent per year since 1990. If travel growth keeps pace with historical trends, travel demand would increase by 60 percent in 10 years. Traffic-flow conditions are commonly expressed in terms of level of service(LOS),which %W ranges from LOS A(best)to LOS F(worst). LOS A denotes free-flow conditions with little or no restrictions to driver behavior. LOS F denotes jammed traffic-flow conditions with intolerable delays and backups during the peak hour. The existing peak-hour,peak- `" directional volume on 1-205 west of Mountain House Parkway was approximately 7,800 `. vehicles per hour(vph)in 2003,which was LOS C. The 2010 projection for the peak hour V traffic volume in the MEIR is 6,720 vph on I-205 to the west of Mountain House Parkway. Therefore,the projected 2010 peak-hour volume in the MEIR was already occurring in 2003. %NW At the intersection of Grant Line Road and Altamont Pass Road,the existing peak afternoon %, (PM)traffic is extremely heavy on Altamont Pass Road due to traffic using this roadway as an alternate to the congested 1-580 and I-205 freeways(EDAW,2005b). 64W Transportation Demand Management(TDM) The 1997 Mountain House Community TDM Program and Transit Plan establishes several %W measures and action items to reduce traffic problems including providing the following: • a TDM coordinator; • a community telecenter(when 2,500 house are occupied)to facilitate telecommuting; • bicycle storage and showers and lockers to promote bicycling; `, • bus stops located every one-quarter to one-half mile; %„ • a "fair-share" contribution to the Altamont Pass commuter train platform; • three "park-n-ride" lots;and • encouraging employers to provide flexible work-hour programs(EDAW, 2005b). %, Public Transit The San Joaquin County Regional Transit District provides bus service through its Stockton ` Metropolitan Areas Regional Transit(SMART) system. Several daily routes are offered from Tracy to the Dublin—Pleasanton—Livermore area and the San Jose—Silicon Valley area. Some routes offer subscription bus service. The 1997 Mountain House Community TDM Program and Transit Plan states that the MHCSD should work to have SMART service extended to the Mountain House Parkway/Central Parkway park-n-ride lot when 1,000 4-77