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3.1 2 Groundwater Sampling <br /> ' Two groundwater samples were collected with a hydropunch device to evaluate <br /> groundwater conditions in the areas of concern One groundwater sample was <br /> collected from boring WB-1, located adjacent to the former northern-most UST The <br /> ' second water sample was collected from offsite boring ACS-3, east of and near that <br /> former UST This offsite boring is located in the vacant lot, east of the site <br /> ' 32 RESULTS <br /> ' 3.21 Lithology <br /> ' As shown in the Boring Logs (Appendix D), water boring WB-1 was advanced through <br /> gravel backfill to a depth of 10 feet bgs, the total depth explored In onsite borings <br /> ACS-1 and ACS-2, approximately 3 5 feet of fill was encountered, consisting of one <br /> foot of sandy gravel overlying approximately 2 5 feet of sand. Beneath the fill was <br /> approximately 3 to 5 feet of native silt/clay soil underlain by clayey very fine sand <br /> ' (ACS-1) and clayey fine sandy silt (ACS-2) to 10 feet bgs The total depth explored <br /> was ground surface to 10 feet. No hydrocarbon odors were noted in either the soil <br /> ' samples or the cuttings from water boring WB-1 . <br /> ' 3.2.2 Laboratory Analytical Results <br />' 3 2 2 1 Soils <br />' Soil samples were analyzed at Sequoia Analytical Laboratories for the analytical <br /> methods shown in Table 1 . As requested by SJCPHD/EHD, the fab used detection <br />' limits from the Tri-Regional Guidelines and the LUFT Manual. <br /> 2198R010 wplFebrwW 1995 4 �Ittelhauser <br /> C O R P O N A T I O M <br />