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Monitoring Well Destruction and Soil and Groundwater Investigation Report US Can—Welty Road December 28,2010 rural area surrounded by agricultural, light-industrial, and residential properties. An active Union Pacific Railroad(UPRR)right of way(ROW)parallels Highway 33 to the southwest. The site extends from approximately 500 feet southeast of E. Schaefer Road to the northwest, to approximately 500 feet south of the intersection of Highway 33 and S. Welty Road. At its widest point it extends approximately 70 feet northeast and 200 feet southwest of Highway 33. Insulair, Inc. (Insulair), a paper products manufacturer, leased and operated a large portion of the site(located at the southwest corner of Highway 33 and Welty Road)until April 2009. Prior to Insulair's tenancy,Hunter Container Corporation(Hunter Container), a container manufacturer, and US Can Company(US Can), a can manufacturer, operated on the property. Hunter Container still owns the property. Crop Production Services Inc. (CPS; formerly Western Farm Services) is located across the UPRR ROW and Highway 33 from the site. CPS has stored and distributed bulk liquid and dry fertilizers on its facility since 1969. A former Union Oil service station was located at the northeast corner of Highway 33 and S. Welty Road. The former Vernalis Pump Station, a former OVP crude-oil pumping station, is located across S. Welty Road from the site. The site and surrounding properties are shown on Figure 2. 2.2 HISTORICAL AND EXISTING PIPELINES The site includes historical easements for the former OVP and the former TAOC pipelines. The pipelines were located parallel to, and south of,the UPRR ROW and Highway 33. The OVP was installed between 1902 and 1904 as a"hot line"(i.e., the oil was heated to facilitate transmission) and carried San Joaquin Valley crude oil(SJV crude)north from the Kern River Oil Fields (in and near Bakersfield)to the Richmond Refinery. The pipeline and associated pump stations operated from 1903 until the early to mid 1930s. The TAOC pipeline system was constructed in 1907 and transmitted heated crude oil from the southern San Joaquin Valley to the Bay Area. For a relatively short time the pipelines transmitted a cutter stock with the crude oil between Coalinga and the Bay Area; the cutter stock was used to reduce the viscosity of the oil. The TAOC pipelines were operated until the 1970s. Kinder Morgan Energy Partners, LP(KM) currently operates a pipeline within the UPRR ROW that runs parallel to the former OVP and TAOC pipelines. The KM pipeline reportedly transports refined petroleum products. 2.3 EXISTING AND PLANNED DEVELOPMENT The UPRR ROW, Highway 33, and S. Welty Road are used for transit. Insulair,which leased the Hunter Container/US Can property on the south side of Highway 33, discontinued operations in April 2009; future development plans for this property are unknown. CPS is currently in operation. Land use in the general area is predominantly agricultural. There are no other known redevelopment plans for the site or surrounding properties. 2.4 HYDROGEOLOGIC SETTING The site is located near the western margin of the Central Valley. Underlying this area are interbedded clay, silt, sand, and gravel Quaternary alluvial deposits from the Coast Ranges to the west. The soils encountered in this area appear to consist of predominantly fine-grained material such as silts and clays, with lesser amounts of coarser-grained material such as sands and 2 Sw 1C. from Seiert[e to SolidiM