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• 25 January 2005 AGE-NC Protect No 99-0559 Page 6 of 12 of 6,700 gg/1 and 710 gg/l,respectively The BTEX compounds were detected in samples CPT I-100 at concentrations of 1,100 gg/l, 89 µg11,410µg11 and 900µg11,respectively The BTEX compounds were detected in samples CPT2-100 at concentrations of 100 µg11, 120 gg/l, 10 gg/l and 47 gg/l, respectively The fuel additive MTBE was detected in CPTI-100, CPT2-100 and CPT3-100 at a maximum concentration of 870 gg/l (CPT3-100), HU5 upper Samples CPT I-130,CPT2-130 and CPT3-130 were collected from the upper portion of HU5 TPH-g was detected in sample CPTI-130 at a concentration of 4,700 gg/l The BTEX compounds were detected in samples CPTI-130 at concentrations of 94 gg/l, 570 gg/l, 110 gg/l and 540 gg/l, respectively The BTEX compound toluene and xylenes were detected in samples CPT3-130 at concentrations of 0 59 gg/l and 2 4 pg/l, respectively The fuel additive MTBE was detected in samples CPTI-130 and CPT3-130 at a maximum concentration of 1,100 gg/l (CPTI-130) HU5 lower Samples CPT 1-150,CPT2-150 and CPT3-150 were collected from the lower portion of HU5 TPH-g was detected in sample CPTI-150 at a concentration of 10,000 gg/1 The BTEX compounds were detected in samples CPT1-130 at concentrations of 47 gg/l, 410 gg/l, 150 µg/1 and 810 Pg/l, respectively The fuel additive MTBE was detected in samples CPTI-150 and CPT3-150 at a maximum concentration of 1,200 µg/1 (CPT2-150) OFF-SITE CPT LITHOLOGIC INVESTIGATION SEPTEMBER AND OCTOBER 2002 Five paired borings (CPT-4 to CPT-8) were advanced off-site utilizing CPT technology to model the geological and hydrogeologlcal framework and to assess the lateral and locally the vertical extent of dissolved petroleum-hydrocarbons off the site Lithologic data was collected from an initial CPT soil boring at each boring location, a twin boring was then advanced immediately adjacent to the initial CPT soil boring to collect grab groundwater samples from selected depths Soil borings were advanced vertically to the following total depths at the specified locations A site plan depicting boring locations is presented in Figure 2 CPT-4 was advanced to 118 feet below surface grade(bsg) at the northern edge of the Waterloo Road sidewalk, west of the site, CPT-5 was advanced to 125 feet bsg on the eastern edge of Golden Gate Avenue,approximately 150 feet south of Waterloo Road,CPT-6 was advanced to 165 feet bsg on the western edge of Chronicle Avenue,approximately 250 feet south of Waterloo Road, CPT-7 was advanced to 145 feet bsg on the western edge of Sutro Avenue, approximately 100 feet north of Waterloo Road, and CPT-8 was advanced to 168 feet bsg on the western edge of Golden Gate Avenue,at Waterloo Road Ground water sample was collected Advanced G60RnvlrGUMCntZi,Inc