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' Ripona Market <br /> Groundwater Monitoring Well Installation Report <br /> Page: 2 <br />' analyzed by method 8260 for all of the oxygenated compounds and found to <br /> contain 960 pg/Kg of MTBE <br />' The groundwater sample was obtained by driving a hydropunch type well screen <br /> from 30 to 34 feet in depth The water sample contained low levels of Toluene, <br /> Xylenes, and MTBE at 10 pg/L <br /> Table of Laboratory Sample Results (1/31/00) <br /> Sample I D Gasoline Benzene Toluene I E-Benzene I Xylenes I 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-H,0 ND ND 0_4_pgiL ND 13NA 10 <br /> ND='\ON-DETECT NA—Not Analyzed <br /> 2.0 SCOPE OF WORK <br /> On July 27, 2000 M J KIoberdanz & Associates drilled 3 soil borings in the vicinity of <br /> the former underground fuel tanks and the previously disclosed contamination (Figure 2) <br /> to a depth more than ten feet below groundwater All three borings were completed as 2- <br /> inch groundwater monitoring wells The wells surround the fuel-island and former <br />' underground tanks to demonstrate the lateral limits of the soil and groundwater <br /> contamination <br /> Three soil samples were obtained from each boring for laboratory analysis and included a <br /> Isample from the capillary zone and any apparently contaminated areas above and/or <br /> below groundwater Petroleum contamination was not present in any of the soil samples <br /> However, MTBE was confirmed in boring MW-2 in the relatively high concentration of <br /> 1100 µg/Kg at 25 feet in depth <br /> Table of Laboratory Soil Sample Results (July 27, 2000) <br /> Sample I D Gasoline I Benzene Toluene E-Benzene I Xvlenes 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 /> D D <br /> MW-3-30' ND NND NND ND <br /> • ND=Nan Detect NA-Not Analyzed, Gasoline reported in Mg/Kg BTEX MTBE in pg/Kg <br /> "MTBE Confirmed present by Method 8260 **MTBE Confirmed not present by Method 8260 <br />