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ARCADIS Phase II Field <br /> Investigation Work Plan <br /> 4. Schedule Union Pacific Railroad <br /> Company <br /> Former Maintenance Facility <br /> ARCADIS is prepared to begin implementation of the Phase II investigation within three Tracy,California <br /> weeks of agency approval of this work plan. Pre-implementation activities(e.g., utility <br /> clearance,site preparation, permitting,and scheduling)are anticipated to take two to <br /> three weeks to complete and are dependent on the drillers availability.The CPT/LIF <br /> investigation would be conducted first(an estimated week),with additional step-out <br /> borings drilled as needed.The subsequent field activities are anticipated to be <br /> conducted consecutively,with possibly a week between the different field tasks to allow <br /> for evaluation of the field data. <br /> As mentioned,step-out CPT/LIF borings, CPT/HydroPunchTm borings, and monitoring <br /> wells will be installed in and around the source area as part of this Work Plan until the <br /> objectives stated in this Work Plan are satisfied. <br /> 5. References <br /> ARCADIS,2008a. LPH Investigation Work Plan, Union Pacific Railroad Company, <br /> Former Tracy Maintenance Facility, Tracy, California. February 29. <br /> , 20081b. 2007/2008 Annual Groundwater Monitoring Report, Union Pacific <br /> Railroad Company, Former Tracy Maintenance Facility, Tracy, California. May 16. <br /> C.\Documents and Settirgs\kbrandt\Local Setbrgs\Temp cra y Internet FAes\ConteaOudo k\52S%LSSI\Phase 11 VVP_01_05_09(2).doc 6/6 <br />