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1 29 March 2004 . AGE-NC Project No. 97-0327 Page 4 of 12 • February 2000 - Ground water monitoring wells MW-1, MW-2 and MW-3 were installed at the site to continue assessment of the lateral and vertical extent ofpetroleum-impacted soil and ground water; results of the February 2000 investigation were reported in the AGE- ' prepared Ground Water Monitoring Well Installation Report - I" Quarter 2000, dated 24 April 2000. Laboratory analysis of MW-2 and MW-3 soil samples detected TPH-g at concentration as high as 68 mg/kg, TPH-d as high as 480 mg/kg and BTEX compounds as ' high as 1.8 mg/kg; and MTBE was detected in MW-1, MW-2 and MW-3 at concentrations as high as 0.89 mg/kg. No other fuel components were detected by laboratory analysis. Analytical soil and ground water data is included in Tables 1 and 2. • November and December 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, several domestic, irrigation and industrial water wells were located within the 2,000-foot radius.Results of the investigation were reported in the AGE-prepared Sensitive ' Receptor Survey, dated 11 January 2001 (Appendixi. 4 0-1416 41 • January 2002 - Three soil borings (P-10, P-11 and P-12) and one ground water monitoring well(MW-4)were installed at the site to assess the lateral and vertical extent of petroleum- impacted soil and ground water.TPH-d,TPH-g and low BTEX concentrations were detected in the 40-foot soil sample collected from boring P-10,the 45-foot soil sample collected from ' boring P-11 and the 45-foot and 55-foot soil samples collected at P-12. In addition,MTBE was detected in the 45-foot sample collected from boring P-11. Analytical soil and ground water data is included in Tables 1 and 2. Results of the January 2002 investigation were reported in Quarterly Report-First Quarter 2002, dated 17 July 2002,prepared by AGE. Between February 2000 and September 2003, twelve ground water monitorin events were ' performed at wells MW-1 through MW-4. TPH-g and BTEX compounds were ge erally detected from well MW-2 at concentrations as high 490 micrograms per liter(µg/1)and 21 µg111 espectively; TPH-d was generally detected from wells MW-1 through MW-4 at concentrations as high as 430 ' (µg/l). Low concentrations of MTBE were generally detected from wells MW-1 and MW-2 at concentrations as high as 22 µg/1. 3.0. SITE STRATIGRAPHY/HYDROSTRATIGRAPHY ----.----Based-on vertical soil profiles-in-soil=boring logs acquired during site assessment-activities; a very s stiff to hard, fine grained sandy silt was generally encountered at depths between 10 feet and 25 feet bsg,between 40 feet and 50 feet bsg and between 60 feet and 65 feet bsg; a medium dense to dense, '. silty fine sand was generally encountered at depths between 25 feet and 40 feet bsg, 50 feet and 60 r