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RECOMMENDATIONS <br /> Based on the analytical results (the excavation containing tanks T-1 and T-2 showed no soil <br /> ' contamination), backfilling the excavation with clean backfill material and then sealing it <br /> with a cover of silt or clay to inhibit the penetration of water is recommended <br /> ' Based on the analytical results, depth to groundwater, annual rainfall and site conditions, <br /> yt P <br /> the excavation that contained tank T-3 can also be backfilled with clean material and <br /> sealed with a cover of impermeable matenal. <br /> 1 <br /> r1ma-01�"11 Page 11 <br />