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Frank C. Alegre Trucking Company,Inc. 4203-172A <br /> Former Trucking Facility January 31, 1997 <br /> WORK PLAN FOR DRAINAGE Revised February 25, 1997 <br /> POND INVESTIGATION(PHASE ONE) Page 4 <br /> Duplicate and Background Soil Samples <br /> As part of the soil sampling program, a duplicate soil sample will be prepared from one of the <br /> central pond area soil samples. The duplicate sample will be submitted for identical laboratory <br /> analyses. In order to establish potential background contaminant levels, a near surface soil sample <br /> (six inches) will be recovered outside of the pond area(Figure 2). The background sample will be <br /> tested for metals and organochlorine pesticides. <br /> Rennrt Preparation and Data Analysis <br /> Following completion of field and laboratory activities, an evaluation of the extent of contaminated <br /> materials will be developed. Based on the reported concentrations for the organic/inorganic <br /> compounds, an evaluation of the potential exposure risks and potential ground-water impacts will <br /> be developed. <br /> Given the results of the initial investigation, recommendations for further characterization and/or <br /> monitoring will be provided. Additional phases of work could include additional exploratory soil <br /> borings and/or ground-water monitoring wells. A final report will be prepared which summarizes <br /> the field and laboratory test data, and will include conclusions regarding the extent of possible soil <br /> and/or ground-water contamination. The report will be prepared and signed by a State of California <br /> Certified Hydrogeologist. <br /> We are pleased to have the opportunity to provide this work plan. If you have any questions <br /> regarding the proposed scope of the field or laboratory services,please contact our office. <br /> Very truly yours, <br /> ENGEO INCORPORATED Reviewed by: <br /> Shawn Munger Brian Flaherty <br /> Manager, Environmental Services Vice President <br /> Certified Hydrogeologist 413 Certified Engineering Geologist 1256 <br /> sm/lb:pin <br /> Attachments: Figures 1 and 2 <br /> Health and Safety Plan <br /> cc: 1 - San Joaquin County,Ms. Kasey Foley <br /> I -California Regional Water Quality Control Board,Ms. Wendy Cohen <br /> 1 -California Department of Toxic Substances Control,Mr. Duncan Austin <br />