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MPDS UN6981 16 November 17 1997 Page 11 of 15 Table 2 Summary of Laboratory Analyses Water Depth to Woer TPIR as Ethyl. Wa# bate Owt, TOC} Gasoline 13mene Tokow laeuwne Xylefts M"E MW-13 10/20/93 5274 <50 <05 <0 5 <05 <05 -- (Cont ) 7/26/93 5221 <50 <05 <05 <0 5 <05 -- 4/26/93 51 15 <50 <05 <0 5 <05 <05 -- 1/13193 <50 <05 <05 <0 5 <05 -- 10/21-22/92 <50 <0 5 <05 <05 <05 -- (MW14)t 2/28/94 NA <50 <05 <05 <05 <0 5 -- VW-1 10/15/97 3572 <50 <05 <05 <05 <0 5 <5 0 1<2 011 7116/97 33 89 <50 <05 <0 5 <05 <0 5 <5 0 1/21197 3647 <50 <0 5 <0 5 <0 5 <05 <5 0 I0/23/96 NM SAMPLED SEMI-ANNUALLY 7/24/96 3827 180 1 9 19 1 6 77 130 VW-2 10/15/96 NA WELL WAS DRY . 7/16/97 NA WELL WAS DRY 1/20/97 3707 INSUFFICIENT WATER TO SAMPLE 10/23/96 NM SAMPLED SEMI-ANNUALLY 7/24/96 3867 78,000 510 3,100 540 24,000 720 156011 VW-3 10/15/97 35 84 <50 <0 5 <0 5 <0 5 <05 <5 0 1<2 0]# 7/I6/97 33 98 <50 <0 5 <0 5 <05 <0 5 14 1/21/97 36 51 <50 <05 <05 <05 <0 5 58 10/23/96 NM SAMPLED SEMI-ANNUALLY 7/24/96 3834 <50 <0 5 <05 <05 <05 <5 0 VW-4 10/15/97 NA WELL WAS DRY 7/17/97 34 13 670 <0 5 45 6 1 98 5 1 1/21/97 36 07 3,000 4O 5 5 3 31 530 <5 0 10/23/96 NM SAMPLED SEMI-ANNUALLY 7/24/96 NA WELL WAS DRY Covered by a new sidewalk § Sequoia Analytical Laboratory has identified the presence of MTBE at a level above or equal to the taste and odor threshold of 40 µg/L in the sample collected from this well * The analytical results of the ground water samples collected from monitoring wells MW-8 through MW13 on January 17 and 18, 1994 were inconsistent with the previous analytical results for these wells Therefore, MPDS Services, Inc resampled these wells on February 28, 1994 • Sequoia Analytical Laboratory reported that the hydrocarbons detected did not appear to be gasoline