WORK PLANS - Laserfiche WebLink

Home Browse Search

i Page 1 1.0 Introduction 1.1 -- General The project proposes to widen or realign State Route 120 in the City of Escalon between 0.2 miles west of the Santa Fe Railroad crossing and Viking Street. This proposal is to facilitate the San Joaquin County Measure "K" Congestion Relief Project. In that project, the City proposes to widen McHenry/Escalon Avenue to 4 lanes from Mahon Road, just north of the City limits, to Catherine N%Tay excluding the state highway as shown on Attachment 2. The estimated cost of the City's project is 83,000,000. The project covered in this PSR,bisects the City's project along Escalon Avenue between Yosemite Avenue and Main Street, a distance of about 500 feet. The City of Escalon in their project proposed to install traffic signals at the Yosemite/Escalon Avenue and Main Street/Escalon Avenue intersections. The signals are now included in the state project. The six alternatives for the Route 120 project have estimated costs 'that range from $865,000 to $2,497,000 excluding hazardous waste costs. This project could be funded from a variety of sources such as Measure K, Petroleum Violation Escrow Account and the State Highway Account. 1.2 Background There are several present and former service stations in the project area. Several of these sites will be directly affected by the project alternatives proposed. In addition, there are other potential hazardous waste sites that may be within the project area as well. Historical research indicates that several of these parcels have a long history of development. Only one site has had some contamination investigation and cleanup. It is likely that other contamination problems could be encountered as part of the development of the proposed project. 2.0 Description of Regional Setting of the Project The project is situated in the eastern portion of San Joaquin County within the central portion of the San Joaquin Valley. In a geographical context, the site location lies near the geographical center of the State of California. Geologically the site is near the eastern edge of the Great Valley Province which consists of a northwest-trending geosyncline bounded on the west by the Coastal Range Province and on the east by the Sierra Nevada Province. The project site is underlain by sedimentary deposits whose thickness is on the order of 6000 meters. These sedimentary rocks predominantly consist of marine sandstone and shale of Cretaceous to late Tertiary age which were derived from the erosion of the Coastal and Sierra Nevada Ranges. The basement rocks lying beneath these sediments are from the Sierra Nevada granitic complex. Surficial deposits consist of alluvial fan deposits which were deposited during flood stages of major stream courses. The surficial Y