Laserfiche WebLink
Rom Science to Solutions- <br /> HPP-BTR MP#216.9 <br /> Swimd Homes-Bridle Creek <br /> Work Plan <br /> DCN:C20-SAI-Swlmd-01-10182 <br /> August 1,2006 <br /> Mr.M. Scott Mansholt <br /> Chevron Environmental Management Company <br /> 6001 Bollinger Canyon Road,K2072 <br /> P.O. Box 6012 <br /> San Ramon,CA 94583-0712 <br /> Subject: Soil Sampling Work Plan <br /> Surland Homes Property <br /> Tracy, California <br /> Dear Mr.Mansholt: <br /> Science Applications International Corporation(SAIC)is pleased to submit this work plan to <br /> Chevron Environmental Management Company(CEMC)to collect additional soil samples and <br /> develop a Human Health Screening Evaluation(HHSE)report for the Surland Homes property <br /> located in Tracy,California. This work plan has been prepared in response to a December 19, <br /> 2003 letter from the Department of Toxic Substances Control(DTSC),commenting on a Health <br /> Risk Screening Evaluation(HRSE)developed and submitted previously by CEMC. This work <br /> plan also provides an initial response to comments in the letter. <br /> BACKGROUND <br /> SITE DESCRIPTION AND USE <br /> The Old Valley Pipeline(OVP)was operated by Standard Oil of California(Standard), <br /> predecessor of Chevron,and was located along the southern edge of the Union Pacific Railroad <br /> Company(UPRR)right of way(ROW)(formerly Southern Pacific Railroad Company),which <br /> lies immediately north of Byron Road,and immediately south of the Laurelbrook residential <br /> subdivision. The Laurelbrook subdivision,which currently consists of more than 100 single- <br /> family homes over approximately 15 acres, is one of several tracts of land north of the OVP <br /> ROW that have been recently developed into residential homes. The former OVP transported <br /> heavy petroleum(crude and fuel oil)from Bakersfield to Richmond, California, from the early <br /> 1900s to the 1960s. <br /> The former Tidewater Associated Oil Company(TAOC, operated by Tidewater/Associated oil <br /> companies,predecessor to Chevron)pipeline was also located along the southern boundary of the <br /> UPRR ROW. The TAOC pipeline transmitted heavy crude from the Central Valley to the Bay <br /> Area from the early 1900s to the 1970s,when it was decommissioned. <br /> Currently the area north of the UPRR ROW is developed with residences(Figure 2). The UPRR <br /> ROW is currently undeveloped,Byron Road is located south of the UPRR ROW,and residences <br /> are present along the south side of Byron Road. The closest surface water is the Lower Main <br /> Canal, located roughly %2 mile south of the site. <br /> Science Applications International Corporation <br /> 1000 Broadway I Suite#675/Oakland,CA 9460711 tel:(510)433-0835/fax:(510)446-7919 1 saic.com <br />