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i ` Geological Technics Inc Page 6 35500'Welty Road,Vernalis,CA Report-Preiimmary Environmental Site Assessment Project No 248 2 • February 6, 1995 • The current Property owner is Mr Robert Roberts of Robert's Enterprises in Sunnyvale (Address 870 West Evelyn, Sunnyvale, Ca 94086-Phone (408) 736-5411) _ Mr Ron Ferraro Telephone Interview Mr Ferrario, Operations Manager of the Enviropur-West facility in Patterson, was contacted on January 3, 1995 to discuss both the Vernalis Enviropur-West facility located adjacent to the Property, but details on the Property as well He indicated that he believed that the old Standard Oil line was used to transport crude oil Furthermore, according to him, there was a nursery operation located on the Property for a short period of time He further indicated that there was an iron milling and stamping business located to the south of the Vernalis Enviropur facility (1141 Highway 33) The Vernalis Enviropur-West property is used for bulk storage of petroleum and oil products Dale Brinkman Interview Dale Brinkman met with Geological Technics Inc personnel onsite during the site reconnaissance portion of the Phase I investigation He indicated that he had owned the Property prior to selling it to Mr Roberts He further stated that the labor camp, once present at this location burned sometime in the early 1950's He showed Geological Technics Inc personnel the area where he believed bus repairs had taken place (on the Property) He also thought that the depth to groundwater in the area was approximately 30 feet Bill Herndon Telephone Interview Mr Bill Herndon, an operations manager for California Northern Railway, was contacted on January 6, 1995 He indicated that the existing product pipeline* was under the control of a subsidiary of Southern Pacific Pipeline Company and that they operate a network of pipelines throughout California *Information provided by Homer J Olsen, Inc personnel indicates that the pipeline is approximately 10 years old and runs about 4-5 feet below ground surface This pipe is composed of 1/4" wrapped steel 3.0 SUBSURFACE INVESTIGATION The purpose of drilling the soil borings was to evaluate the presence or absence of petroleum contamination from past land use in the site's vadose zone environment and how its geology may have affected the transport of petroleum hydrocarbons and its attenuation processes