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Ripo na Market Vertical Groundwater Investigation&November 2003 Quarterly Report Page: 3 Table of Laboratory Soil Sam le Results (July 27, 2000) Sa le I.D. Gasoline Benzene Toluene E-Benzene Xylenes MTBE MW-1-15' ND ND ND ND ND ND .. MW-1-20' ND ND ND ND ND ND MW-1-25' ND ND ND ND ND ND y MW-2-15 ND ND ND ND ND ND MW-2-20' ND ND ND ND ND ND MW-2-25' ND ND ND ND ND *1700 MW-3-15' ND ND ND ND ND ND MW-3-25' ND ND ND ND ND ND MW-3-30' ND ND ND ND ND ND 1 ND=Non Detect NA=Not Analyzed, Gasoline reported in Mg/Kg BTEX-MTBE inµg/Kg *MTBE Confirmed present by Method 8260 **MTBE Confirmed not present by Method 8260 The water samples collected from the three wells contained petroleum compounds. The highest concentrations were found in MW-2 and the lowest in 2 MW-1. a Table of Laboratory Water Sam le Results July 31, 2000) Sample I.D. I Gasoline I Benzene I Toluene I E-Benzene I Xylenes Ox enates MW-1 0.08 ND 1.3 2.2 8.5 ND MW-2 0.68 3.3 19 15 71 6300 mtbe, 1000 t-Btl., 2.3 tame MW-3 0.11 ND 2.0 2.5 12 3.2 mtbe ND--Non Detect NA=Not Analyzed, Gasoline reported in Mg/L BTEX and Oxygenates inµg/L The wells were surveyed for elevation so that a gradient can be determined: " Groundwater flow direction is from the WSW direction with a gradient of 0.009 + 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. On November 18, 2002 M.J. Kloberdanz & Associates, using a Geoprobe (direct push technology) provided by V&W Drilling, advanced a soil boring to a depth of i 60 feet to collect soil and water samples north of the former UST excavation (B- 2). Soil samples were collected every five feet to a depth of 55 feet for geological interpretation. A 60-foot soil sample was not collected due to refusal at a depth of 59 feet. However, a laboratory groundwater sample was collected between depths a of 55 and 59 along with a sample from medium grained unconsolidated course sand at 45 feet in depth. The Geoprobe was relocated adjacent to boring B-2 and a second attempt to collect at soil sample at 60-feet attempted. The Geoprobe was unable to penetrate below 38 feet in depth in the second boring. Several soil samples, collected from boring B-2, were submitted for laboratory analysis due to the close proximity of this boring to the original release. All soil and groundwater laboratory samples were reported below detection limits for the compounds Canalyzed with the exception of 0.5 µg/L of Toluene in the 60-foot water sample. M