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Rtpona Market October 28,2004 <br /> Corrective Action Plan <br /> Laboratory soil samples were obtained every five feet, below the gravel layer, for <br /> laboratory analysis since contaminated soils were placed back in the tank pit The <br /> ten and twenty foot samples were non-detect for all compounds analyzed The <br /> 15-foot sample contained only 19 pg/Kg of xylenes MTBE was present at 25 <br /> and 30 feet in depth The sample with the highest concentration of MTBE, B-1- <br /> 25', was analyzed by method 8260 for all of the oxygenated compounds and <br /> found to contain 960 µg/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 very low levels of <br /> Toluene, Xylenes, and MTBE at 10 µg/L <br />' Table of Laboratory Sample Results (1/31/00 <br /> Sample I D Gasoline Benzene Toluene E-Benzene Xylenes 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 170ggfKg NA <br /> B-1-H20 ND ND 0 4 L ND 13 NA 10 /L <br /> ND--NON-DETECT NA=Not Analyzed <br /> On July 27, 2000 M J Kloberdanz & Associates drilled 3 soil borings in the <br /> vicinity of the former underground fuel tanks and the previously disclosed <br /> contamination (Figure 2) to a depth more than ten feet below groundwater All <br /> three borings were completed as 2-inch groundwater monitoring wells The wells <br /> were located around the fuel-island and former underground tanks to define the <br /> lateral limits of the soil 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 <br /> any of the soil samples However, MTBE was confirmed in boring MW-2 in the <br /> relatively high concentration of 1100 µg/Kg at 25 feet in depth <br /> Table of Laboratory Soil Sample Results (July 27, 2000) ' <br /> Sample I D Gasoline Benzene Toluene &Benzene Xylenes MTBE <br /> MW-l-151 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 t*1700 <br /> MW-3-15' ND ND ND ND ND `ND <br /> MW-3-2S' 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 inµg/Kg <br /> *MTBE Confirmed present by Method 8260 **MTBE Confirmed not present by Method 8260 <br /> 2 <br />