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1 concentrations ranging as high as 3,300 µg/1 MTBE was not detected by laboratory analysis ifrom any of the above soil or water samples, however TBA was detected in grab water ' samples collected from P-1, P-2 and P-4 at concentrations ranging as high as 140 µg/1, and DIPE was detected in a sample collected from P-2 at a concentration of 12 µg/l Results of the June 1999 investigation were reported by AGE in Preliminary Investigation & ' Evaluation Report, dated 26 July 1999 • December 1999 - Ground water monitoring wells MW-1, MW-2, MW-3 and MWA were ' installed at the site to assess the lateral and vertical extent of petroleum-impacted soil and ground water Laboratory analysis of soil samples detected TPH-g, TPH-d and TPH-k between 20 and 35 feet from well MW-1 at concentrations ranging as high as 7,000 mg/kg, ' either TPH-g, TPH-d or TPH-K were detected in the initial water samples collected from wells MWA, MW-2 and MW-4 at concentrations ranging as high as 47,000µg/l Various BTEX compounds were detected in the same MW-1 soil samples (20 and 35 feet) at ' concentrations ranging as high as 54 mg/kg,various BTEX compounds were detected in the initial MW-1 and MW-4 water samples at concentrations ranging as high as 6,400 µg/l Results of the June 1999 investigation were reported by AGE in Quarterly Report- December 1999, dated 02 February 2000 • November 2000 - AGE conducted a sensitive receptor survey to locate potential vertical ' conduits within a 2,000 foot radius of the site The results of the sensitive receptor survey did not locate any municipal water wells within 2,000 feet of the site, however, two domestic water wells were located within 2,000 feet of the site Results of the investigation were '• reported in Sensitive Receptor Survey dated 27 November 2000 prepared by AGE • December 2000- Ground water monitoring wells MW-5, MW-6 and MW-7 were installed at the site to further assess the lateral and vertical extent of petroleum-impacted soil and ' ground water Laboratory analysis of soil samples detected either TPH-g, TPH-d or TPH-k between 70 and 85 feet from well MW-5 and between 30 and 40 feet from well MW-7 at ' concentrations ranging as high as 7 6 mg/kg,either TPH-g,TPH-d or TPH-K were detected in the initial water samples collected from wells MW-5,MW-6 and MW-7 at concentrations ranging as high as 67,000µg/1 Various BTEX compounds were detected in the soil samples 1 collected at 70 feet from MW-5 and between 30 and 40 feet from MW-7 at concentrations ranging as high as 1 1 mg/kg,various BTEX compounds were detected In the Initial MW-5, MW-6 and MW-7 water samples at concentrations ranging as high as 14,000µg/1 1,2-DCA ' was detected in the 30 foot soil sample from MW-7 at a concentration of 75 mg/kg and from the initial MW-5 and MW-7 water samples at concentrations as high as 1,200 µg/1 Results of the December 2000 investigation were reported by AGE in Quarterly Report- Fourth ' Quarter 2000, dated 23 March 2001 • July 2001 - AGE advanced six cone penetrometer testing (CPT) soil bonngs (P-5 through ' P-10) to depths of approximately 125 feet bsg on- and off-site to assess the vertical extent of petroleum-impact and Identify potential hydrologic units Based on CPT data, AGE interpreted the CPT data to identify four potential hydrogeologic flow units informally ' Identified as First Water Zone(35-55 feet bsg), Second Water Zone(60-80 feet bsg), Third Water Zone (90-100 feet bsg) and Fourth Water Zone (110 to at least 125 feet bsg) Advanced GeoEnvironmental,Inc