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J <br /> the diesel- and oil-ranges by NWTPH-Dx, and total lead by EPA Method 6010B. <br /> If sample results indicate that the remedial objectives have not been met, <br /> Kleinfelder may direct additional excavation and re-sampling and analysis. <br /> Based on the projected size of the excavation and approximate sample spacing <br /> of 25-feet, it is anticipated that approximately 40 final limit of excavation samples <br /> will be required to show compliance with MTCA. However, approximately 20 <br /> additional samples may be required as a result of required additional excavation <br /> activities. Of the approximately 60 total samples, it is anticipated that up to two- <br /> thirds of the samples will require Rush 24-hour turnaround time. <br /> In addition, one sample or 5% of the total samples will be collected daily to <br /> confirm XRF field screening for disposal segregation and will be analyzed for <br /> total lead. <br /> . Segregate soils known to have elevated lead levels, and segregate oily <br /> or metallic rubble or soil for further characterization prior to transport. This may <br /> include sampling for fuels, waste oil, and toxicity characteristic leachate <br /> procedure (TCLP) to determine the waste classification for disposal. Eight <br /> samples are assumed to be required for waste characterization for the smaller <br /> volume of waste that is not transported to Rinker Materials in the area already <br /> know to contain elevated lead concentrations. <br /> . Collect up to five water samples from either an on-site water storage tank or the <br /> excavation for disposal characterization. Ground water samples will be analyzed <br /> for diesel- and oil-range TPH by NWTPH-Dx, cPAHs by EPA Method <br /> 8270C/SIM, and dissolved lead by EPA Method 6010B. For costing, it is <br /> assumed that these samples will require a 48-hour rush turnaround time. <br /> . Observe backfilling of the excavation to ensure placement of ballast in dewatered <br /> excavations and that compactive effort is made according to the bid <br /> specifications. <br /> Task 9 — Reporting: Prepare a Report summarizing the field procedures and <br /> subsurface findings and analytical results. The analytical results will be presented in <br /> summary data tables and compared to applicable regulatory cleanup levels under <br /> MTCA. Upon completion of the field activities and receipt of analytical results, <br /> Kleinfelder will prepare a report summarizing the construction activities completed and <br /> 62398/SEA8P134R1.doc Page 2 of 4 June 4,2008 <br /> Copyright 2008 Kleinfelder -9 9 <br />