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i <br /> • 8I: Additional soil or groundwater sampling beyond that detailed under <br /> Task 1B of the basic scope of services., Included under additional <br /> sampling will be resampling because of laboratory mishandling or <br /> mistakes. <br /> • 8J: Installation of additional groundwater monitoring wells based on the <br /> results of the initial site investigation. The collection and analysis of <br /> groundwater samples, and the surveying of the additional wells are <br /> included with this task option. <br /> • 8K: Disposal of hazardous IDW. Under the basic scope-of services, the <br /> IDW is assumed to be non-hazardous. <br /> • 8L: Full data validation, which includes review of all raw data and <br /> chromatograms. <br /> I <br /> • 8M: Chemical fingerprinting of the hydrocarbons found onsite. <br /> • 8N: 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 /> • 80: Additional quarters of groundwater monitoring, including the fourth <br /> quarter of 1993. j <br /> r II <br /> TASK 9 ADDITIONAL TASK OPTIONS - BIXLER YARD <br /> Based on the results of the initial site investigation and assessment, additional work may <br /> be required at the Bixler Yard site before remediation activities can be conducted. The <br /> following additional task options are proposed for the Bixler Yard site assessment. <br /> Because the type and degree of contamination at Bixler Yard are not known, the costs <br /> for likely optional subtasks 9A, 9B, 9C, 9E, 9F, 9G, 9I, and 9J are presented as part of <br /> the cost sheets in Exhibit B. Actual subtasks will be determined based on information <br /> gathered while conducting Tasks 1 through 6. <br /> i <br /> 93P4 EBMUD Brentwood,Biller Yard,and Stockton Yard <br /> 90570413.d 14 Exhibit A-Scope of Services <br />