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M1I air ~~ L~ l~~s' ti'~.w~9..y~1~' t.~%i 1~~ 1."~"r`L4J ti.~.~ ~L.r b~J r.~.~ ~' <br />TABLE 2 <br />(Concluded) <br />` • d <br />l <br /> Ground Top of Threshold Threshold February'92 <br />Piezometer Study Surface Casing Stick-Up Level Depth Level Water Surfacx <br />No. Section Elevation Elevation (ft.) (ft.) Elevation Elevation <br />A-10 10-10' 8645.0 8647.7 2.7 12.7 8635 8626.2 <br />&10 10-10' 8656.0 8657.3 1.3 11.3 8646 8631.8 <br />C-30 10-10' 8690.0 8693.9 3.9 13.9 8680 8648.4 <br />D-10 10.10' 8721.0 8724.1 3.1 13.1 8711 8652.0 <br />C-11 11-11' 8690.0 8694.0 4.0 14.0 8680 8667.8 <br />D-11 11-11' 8721.0 8724.2 3.2 13.2 8711 8668.2 <br />Note: Evidence of new or increased surface seepage should be carefully monitored and documented even when piezometer <br />water levels remain below threshold levels. <br /> <br />~J <br />~*~~ ~-mom' Sheet 2 of 2 <br />