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Le <br /> Taber <br /> Quincy Engineering, Inc. Since 1954 <br /> November 26, 2003 <br /> 1P2/399/245-4 <br /> The excavations will be backfilled immediately after sampling at each location. <br /> Sample excavations less than 1.2 m deep will be filled with excess excavated soil and <br /> adjacent soil as necessary to return the excavation to approximately original grade. <br /> Sample excavations deeper than 1.2 m will be backfilled in accordance with County <br /> requirements. <br /> 5.2 DECONTAMINATION <br /> �- The sampling and excavation equipment will be thoroughly cleaned before arrival <br /> on the site. All sampling equipment (trowels, split-spoon sampler, etc.) will be <br /> disassembled between each sampling interval, washed with a weak detergent bath <br /> (Liquinox or similar) and double rinsed with distilled water immediately before collection <br /> of each sample to prevent incidental and cross contamination. Wash and rinse water <br /> 'r (rinsate) from the cleaning process will be disposed of on the ground. Lead or other <br /> contaminants if any, that might occur in the rinse water would thereby be returned to <br /> the soil where they originated, and no change in site conditions would occur. Rinsate <br /> water shall not be disposed of near any drainage inlets or environmentally sensitive <br /> areas and violate water quality regulations. <br /> The potential for excavation equipment creating significant cross-contamination <br /> between sampling locations is considered very low. In addition, considering the shallow <br /> depth of the samples, effects of any cross-contamination would be insignificant. As <br /> such, rather than decontamination, excavation equipment will be cleaned by brushing <br /> after completing operations at each sample location. <br /> 5.3 HEALTH AND SAFETY PLAN <br /> All Taber personnel at the site will have OSHA 40 hour training. It is anticipated <br /> 4. that only "Level D" personnel protective equipment (PPE) will be required. A site- <br /> specific health and safety plan is attached as Appendix B. <br /> 6.0 LABORATORY ANALYSES AND PROCEDURES <br /> All samples will be submitted to a California DHS certified laboratory for analytical <br /> testing using standard EPA methods. The following analyses will be performed: <br /> All samples will be analyzed for total lead concentration by EPA method 6010, using <br /> metals extraction by EPA method 3050A. <br /> 6 <br />