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r r t <br /> • 10I: Use of _an outside analytical laboratory for analysis of samples <br /> s <br /> collected as.a result of additional sampling rounds. <br /> • 1OJ: Performance of a pump or slug test to evaluate aquifer characteristics. <br /> This task option will provide information necessary for evaluating <br /> remedial alternatives. <br /> 10K: Use of a non-DISTRICT laboratory for IDW characterization. <br /> • 1OL: Additional soil or groundwater sampling beyond that detailed under <br /> Task 2C of the basic scope of services. Included under additional <br /> sampling will be .resampling because of laboratory mishandling or <br /> mistakes. <br /> • 10M: Installation of additional groundwater monitoring wells based on the <br /> results of the supplemental site investigation. The collection and <br /> analysis of groundwater samples, and the-surveying of the additional <br /> wells are included with this task option. <br /> • 1ON: Drilling of soil borings to delineate the lateral and vertical extent of <br /> soil contamination. It is assumed under the basic scope of services <br /> that the soils have not been impacted by the petroleum hydrocarbons. <br /> • 100: Disposal of hazardous IDW. Under the basic scope of services, the <br /> IDW is assumed to be non-hazardous. <br /> • 1OP: Full data validation, which includes review of all raw data and <br /> chromatograms. <br /> • 10Q: One full rewrite of the remedial alternatives report. This new report <br /> would be required because of significant changes in the levels or types <br /> of contaminants of concern identified during quarterly monitoring. <br /> • 10R: Performance of additional pilot tests to support the air sparging <br /> alternative, or another remedial alternative. <br /> 93P4 EBMUD-Brentwood,Baler Yard,and Stockton Yard <br /> 90570413.d 17 Exhibit A-Scope of Services <br />