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ENGEOGEOTECHNICAL'AN)ENVIRONMENTAL CONSULTANTS I N C O R P O R A T E D MATERIALS TESTING � i ' ' I il Plf fob J Project No. 4203-F2A January 31, 1997 Revised February 25, 1997 W. Robert Fowler Frank C. Alegre Trucking Company,Inc. 5100 West State Route Highway 12 Lodi,CA 95242 Subject: Former Trucking Facility 802 North Cluff Lodi, California WORK PLAN FOR DRAINAGE POND INVESTIGATION(PHASE ONE) Dear Mr. Fowler: ENGEO Incorporated is pleased to present this work plan for the evaluation of an abandoned drainage pond located in the northeast area of the subject property (Figure 1). Soil contamination was discovered within the area of the former drainage pond during 1996 sampling activities conducted on the property. The proposed scope of services includes the following: • Observation of the excavation of six to eight exploratory test pits within the area of the former drainage pond. • Drilling of two exploratory auger borings. • Field screening of soils for volatile organics using a photoionization detector. • Recovery of representative soil samples from one of the auger borings. • Recovery of a ground-water sample from on a of the auger borings. • Laboratory analysis of the soil and ground-water samples. • Preparation of an investigation report summarizing field and laboratory work with conclusions and recommendations for further remediation/characterization, if necessary. BACKGROUND The drainage pond was operated until approximately 1980 when it was filled with soil/debris and abandoned (Figure 2). According to Alegre Trucking personnel, the pond collected storm water runoff. In September 1996, San Joaquin County personnel recovered a soil sample from a test pit 2401 Crow Canyon Road•Suite 200•San Ramon,CA 94583-1545•(510)838-1600•Fax(510)838-7425 E-mail:engstaff®engeo.com•WWW:http://www.hooked.net/engeo