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t 1.0 INTRODUCTION This report documents the subsurface soil assessment activities performed at the property located just west of the Schulte and Chrisman Roads intersection in Tracy, California (Figure 1). A house is located at 7750 Schulte Road on the northeast portion of the property. The purpose of the subsurface assessment was to identify potential subsurface soil contamination beneath (1) a former underground storage tank (UST) and (2) a former Chevron Oil pipeline as detailed in Phase One, Inc's. assessment report dated April 1995. This assessment was conducted at the request of Fremont Land, Inc. who is a potential buyer/developer of the property. 2.0 SITE HISTORY The subject' property is approximately 60 acres of agricultural land with a small house on the northwest portion of the property (Figure 2). In Phase One, Inc.'s Phase I environmental assessment, it was determined that the subject property (1) formerly contained a UST for the storage of motor fuel, and (2) is adjacent to a former Chevron Oil pipeline which was located just south of the Schulte Road right of way; on the north portion of the subject property. Each issue is discussed in greater detail below. 2.1 Former Motor Fuel UST Based on an interview with the current property owner, Mrs. Maxine Hanson, a UST formerly containing either gasoline or diesel fuel was located adjacent to the house on the subject property. Mrs Hanson explained that the UST had been removed by others in 1991, yet no soil samples were collected to verify the presence or absence of petroleum hydrocarbons. ASE recommended collecting and analyzing a soil sample from the native material beneath the former UST. 2.2 Former Chevron Pipeline _. Based on an interview with the current property owner, Mrs. Maxine Hanson, a Chevron Pipeline was buried underground adjacent to the northern property line of the subject site. Both ASE and Phase One, Inc. conducted interviews with Mr. Larry Whitehead of Chevron regarding the pipeline. Mr. Whitehead informed ASE that in the early 1900's, a steel pipeline or pipelines were installed by Chevron near the northern property line of the subject site. Mr. Whitehead explained that the pipeline(s) previously carried crude and bunker "C" oil from Chevron's Bakersfield oil fields to Chevron's Richmond refinery. He also stated that the pipeline(s) were abandoned in the 1940s and may or may not have been removed. Schulte and Chrisman Road, Tracy CA - May 1995 (ASE k2S57) - 1 - ._J