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' Ripona Market Groundwater Monitoring Well Installation Report Page: 3 ' The water samples collected from the three wells contained petroleum compounds The highest concentrations were found in MW-2 and the lowest in MW-1 ' Table of Laboratory Water Sam le Results (July 31, 2000) Sam le I D I Gasoline I Benzene Toluene E-Benzene Xylenes Oxy enates ' MW-1 008 ND 1 3 2 2 85 ND MW-2 068 3 3 19 15 71 6300 mtbe 1000 t-Btl , 2 3 tame ' MW-3 0 11 ND 20 25 12 3 2 mtbe ND=Non Detect NA=Not Analyzed, Gasoline reported in Mg/L BTEX and Oxygenates in pg/L ' The wells were surveyed for elevation so that a gradient can be determined Groundwater Elevations ' Well ICollar Elevation I DTW I GW Elevation MW-1 6958 21 12 4846 MW-2 7001 21 5 4851 ' MW-3 1 70 21 76 4824 Groundwater flow direction is from the WSW direction with a gradient of 0 009 ft/ft A survey of nearby well receptors was conducted within a 2000-foot radius of the site The nearest down gradient well to the east is slightly over 2000 feet away (Appendix D) 2.1 Drilling Permits were obtained as necessary for all wells (including borings) before drilling began The soil boring was accomplished using a mobile mounted drilling rig employing the use of a hollow stem flight auger no less than 3 1/4- inch i d and 8 7/8 o d All drilling equipment was thoroughly steam-cleaned before drilling began, to prevent the introduction of contamination from off site, and between borings to prevent cross contamination The borings were logged under the direct supervision of a registered professional I using the Unified Soil Classification System The color, texture, moisture, plasticity (if applicable), consistency of the earth materials, pertinent soil or bedrock characteristics, and any evidence of contamination will be noted All water-bearing zones and the depths at which they were encountered are noted on these logs