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1 Ripona Market <br /> Vertical Groundwater Investigation II Report <br /> Page 2 <br /> and twenty foot samples were non-detect for all compounds analyzed The 15-foot <br /> sample contained only 19 µg/Kg of xylenes MTBE was present at 25 and 30 feet in <br /> depth The sample with the highest concentration of MTBE, B-1-25', was analyzed <br />' by method 8260 for all of the oxygenated compounds and found to contain 960 <br /> µg/Kg of MTBE <br />' The groundwater sample was obtained by driving a hydropunch type well screen from <br /> 30 to 34 feet in depth The water sample contained low levels of Toluene, Xylenes, <br /> and MTBE at 10 pg/L <br />' Table of Laboratory Sam le Results (1/31/00} <br /> Sample I D Gasoline Benzene Toluene E-Benzene X lens MTBE 8260 <br />' B-1-10' ND ND ND ND ND ND NA <br /> B-1-15' ND ND ND ND 19 ND NA <br /> B-1-20' ND ND ND ND ND ND NA <br />' B-1-25' ND ND ND ND ND 1300 960 <br /> B-1-30' ND ND ND ND ND 170 NA <br /> B-1-H2O ND ND 0 4 ND 1 3 NA 10 <br /> ND=NON-DETECT NA=Not Analyzed <br /> tOn July 27, 2000 M J Kloberdanz & Associates drilled 3 soil borings in the vicinity <br /> of the former underground fuel tanks and the previously disclosed contamination <br /> (Figure 2) to a depth more than ten feet below groundwater All three borings were <br /> completed as 2-inch groundwater monitoring wells The wells were located around <br /> the fuel-island and former underground tanks to define the lateral limits of the soil <br />' and groundwater contamination <br /> Three soil samples were obtained from each boring for laboratory analysis and <br />' included a sample from the capillary zone and any apparently contaminated areas <br /> above and/or below groundwater Petroleum contamination was not present in any of <br /> the soil samples However, MTBE was confirmed in boring MW-2 in the relatively <br />' high concentration of 1100 µg/Kg at 25 feet in depth <br />' Table of Laboratory Soil Sam le Results (July 27, 2000) <br /> Sa le I D Gasoline Benzene I Toluene I E-Benzene Xylenes. MTBE <br /> MW-1-15' ND ND ND ND ND ND <br /> MW-1-20' ND ND ND ND ND ND <br /> MW-1-25' ND ND ND ND ND ND <br /> MW-2-15 ND ND ND ND ND ND <br />' MW-2-20' ND ND ND ND ND ND <br /> MW-2-25' ND ND ND ND ND *1700 <br /> MW-3-15' ND ND ND ND ND ND <br /> MW-3-25' ND ND ND ND ND ND <br />' MW-3-30' ND ND ND ND ND ND <br /> ND=Non Detect NA=Not Analyzed, Gasoline reported in Mg/Kg BTEX-MTBE in gg/Kg <br /> *MTBE Confirmed present by Method 8260 **MTBE Confirmed not present by Method 8260 <br />