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LIGHT, AIR & SPACE CONSTRUCTION '— ENVIRONMENTAL SERVICES COMPANY License Number 445403 R.E.A.Number 04072 3.2 Scone of Work The purpose of this preliminary environmental assessment was to identify the immediate and most recognizable environmental concerns at the subject property. The assessment was performed in accordance with the recommendations presented in the American Society for Testing and Materials (ASTM) Standard Practice for Environmental Site Assessments: Phase I Environmental Site Assessment Process, E1527-00 and accepted industry standards/practice. The specific scope of work included the following: • Prior Use History Review • Environmental Database Review • Visual Reconnaissance _ • Preliminary ACBM Screen • PCB Equipment Search • AST and UST Search • Preliminary Radon Review • Preliminary LBP Screen • Drinking Water Quality • Information provided by the Client The purpose of the ESA was to ascertain whether a"recognized environmental concern"is present on the site property as outlined in the following definition: Excerpt from ASTM E-1527-00: Definition of Recognized Environmental Concern- 3.3.31 Recognized Environmental Conditions -The presence or likely presence of any ha72rdous substances or petroleum products on a property under conditions that indicate an existing release, a past release, or a material release of any hazardous substances or petroleum products into structures on the property or into the ground,ground water, or surface water or the property. The term includes hazardous substances or petroleum products even under conditions in compliance with laws. The tens is not intended to include de minimis conditions that generally do not present a material risk of harm to public health or the environment and thateg nerally would not be the subject of an enforcement action if brought to the attention of appropriate governmental agencies. Conditions determined to be de minimis are not recognized environmental conditions. 33 Site Descriotion The subject property consists of a trapezoidal shaped parcel of land of approximately 7.9 acres improved with a one-story residence of about 2,500 square feet, garage shop of about 1,500 and small garden barn of about 800 square feet. Development near the property includes a concrete products yard to the north and wood pallet manufacturer across Hansen Road. The property is used as a residence and about three fourths of the property is open land west of the site structures. The subject property is located in an area of mixed rural and commercial development just south of Tracy in San Joaquin County, California. April 16 2003 Page 8 of 20 P.O.Box 36303•SAN JOSE•CA•95158-6303 •408/979-0661 •408/979-0621 FAX•408/322-7325 PAGER GENERAL.AND ENGINEERLNO CONTRACTOR•HAZARDOUS SUBSTANCE REMOVAL CONTRACTOR•SITE ENVIRONMENTAL ASSESSMENTS