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MOUNTAIN HOUSE TEleIRA-SOUZA PROPERTY Page 5 WKA No. 5475.03 January 6, 2006 land areas are not listed as Resource Conservation and Recovery Act(RCRA) Generators, nor does the subject property appear in U.S. EPA's Emergency Response Notification System database. No RCRA Treatment, Storage or Disposal facilities are located on or within one-half mile of the property. The subject property does not appear in any of the agency databases reviewed during preparation of this update. State and County Databases Review of various state and county databases using the ASTM search radii revealed two listed facilities within ''/z mile of the subject property. The SWRCB's Spills, Leaks, Investigation, and Cleanups database listed one facility, Former Shell Central Valley Crude Oil Pipelines (22261 Mountain House Parkway), as having experienced unauthorized hazardous materials release(s). The California EPA's Cortese(now OEHHA) database of known hazardous waste and substances sites revealed one listed facility, Bruce&Joanne Kimbrough(17529 Grant Line). The CVRWQCB Leaking Underground Storage Tank database revealed no facilities located within one-half mile of the subject property that are known to have experienced unauthorized hazardous materials release(s). No records regarding the two listed facilities were encountered during a file review at the SJCEHD. Additional file reviews were conducted at state agencies including the DTSC, CVRWQCB, and SWRCB. The results of these files reviews are discussed in the following sections. Former Shell Central Valley Crude Oil Pipelines This facility was an 8,400-foot lineal section of a crude oil pipeline that trended northwest to southeast from % mile west of the subject property, across West Grant Line Road, and southeast to Mountain House Parkway(formerly Patterson Pass Road). According to a report (Project 70- 03759.00) submitted to the CVRWQCB by Clayton Group Services on August 6, 2004, the pipeline consisted of two pipes: one 8.5-inch and one 10-inch diameter pipes that were made inactive during the 1960s but were not removed from the ground. Clayton Group Services was contracted by Shell Oil Products US to locate and remove the former crude oil pipeline. Clayton Group Services was also responsible for delineation and removal of any contamination from the former crude oil pipeline. Upon removal of the former crude oil pipeline and contaminated soils in July 2005, sampling of soil and groundwater was performed in the excavated area of the former crude oil pipeline. Clayton Group Services determined in their report to CVRWQCB, dated November 18, 2005, that contamination from crude oil petroleum products, such as gasoline and diesel (TPH), was delineated to non-detectable levels within 25 feet of the location INK WALLACE•KUHL I,,, " k,k, 6 ASSOCIATES INC.