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MPDS UN6981 13R <br /> JanuW 16, 1997 <br /> Page I1 of 14 <br /> Table 2 <br /> Summary of Laboratory Analyses <br /> Water <br /> >eountl Weser <br /> "Bleva#ol. TPH as <br /> Beiv- <br /> :Welt# Bate (feet) oksu ine Beene Toluene lkwem xylenes M'1_BIr <br /> VW-3 10/23/96 SAMPLED SEMI-ANNUALLY <br /> 7/24/96 NA <50 <05 <05 <05 <0 5 <5 0 <br /> VW-4 10/23/96 SAMPLED SEMI-ANNUALLY <br /> 7/24/96 WELL WAS DRY <br /> § Sequoia Analytical Laboratory has identified the presence of MTBE at a level above or equal to the <br /> taste and odor threshold of 40 Rg/L in the sample collected from this well <br /> * The analytical results of the ground water samples collected from monitoring wells were inconsistent <br /> with the previous analytical results for these wells Therefore, MPDS Services, Inc , resampled the <br /> monitoring wells <br /> Sequoia Analytical Laboratory reported that the hydrocarbons detected did not appear to be gasoline <br /> * The positive result for gasoline does not appear to have a typical gasoline pattern <br /> <# Non-detectable at or above stated detection limit <br /> t MTBE analyzed by EPA method 8260 1n parentheses <br /> fid' Field blank <br /> MTBE = Methyl tert butyl ether <br /> -- Indicates analysis was not performed <br /> NA = Not applicable <br /> Results are 1n micrograms per liter(µg/L), unless otherwise indicated <br /> Note The detection limit for results reported as ND by Sequoia Analytical Laboratory is equal to the <br /> stated detection li nit times the dilution factor indicated on the Iaboratory analytical sheets <br /> Prior to August 1, 1995, the total purgeable petroleum hydrocarbon(TPH as gasoline) <br /> quantification range used by Sequoia Analytical Laboratory was C4 -C12 Since August 1, 1995, <br /> the quantification range used by Sequoia Analytical Laboratory is C6 -C12 <br /> Laboratory analyses data prior to October 20, 1993, were provided by GeoStrategles, Inc <br />