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most excavation) concentrations in accordance with U.S. EPA Method 6010. Rush turnaround <br />times will be requested on laboratory analyses to allow for expeditious decisions as to whether <br />additional excavation is necessary, or whether the excavations may be backfilled. <br />Should laboratory results of the initial confirmatory soil samples suggest that additional <br />excavation is necessary, Hull will coordinate with the excavation contractor to excavate and <br />dispose of additional soils as appropriate. Additional confirmatory samples will be collected in <br />the vicinity of any additional excavation to confirm that soils remaining at the Site meet pathway - <br />specific Closure Levels. <br />The horizontal and vertical extents of all excavations will be measured and surveyed using GPS <br />coordinates prior to backfilling. <br />Following receipt of laboratory analyses indicating that pathway - specific Closure Levels for <br />arsenic and lead have been met, the excavation will be backfilled to grade with clean fill material <br />similar to the surrounding soils. Compaction standards will not be specified. The excavated <br />areas will then be capped with a layer of topsoil and seeded. <br />3.4 Data Management <br />Because the excavation will likely be completed in one week or less, quarterly reports are not <br />anticipated. Following completion of the excavation, a soil remediation completion report will be <br />prepared and submitted to the City, U.S. EPA, and the Indiana Brownfields Program. <br />The report will generally follow the requirements of IDEM's RISC User's Guide and will include a <br />background of the Site, a description of the remedial actions completed at the Site, confirmatory <br />sampling results (including a comparison to RISC Commercial /Industrial pathway- specific <br />Closure Levels), a description of the activities completed to restore the Site to grade, and <br />conclusions /recommendations as appropriate. <br />3.5 Project Schedule <br />The anticipated project schedule is as follows: <br />1) Approval of Soil Remediation Work Plan by Indiana Brownfields Program — month 0; <br />HULL & ASSOCIATES, INC. SBI059.400.0004 <br />INDIANAPOLIS, INDIANA 7 MAY 2010 <br />