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1 <br /> Langston's Market <br /> 15615 Seventh Street, Lathrop, California October 5, 1995 <br /> Interim Secondary Source Removal& Alonuoring Well Replacement Page: 2 <br />' estimate of the extent of contamination in both the soil and groundwater, and has formed <br /> the basis for the location of exploratory soil borings and groundwater monitoring wells <br /> The drilling activities were performed under the supervision of a Caiiforiva Registered <br />' Geologist who selected the boring locations and logged the bonngs as they were drilled <br /> During drilling, soil samples were collected at appropriate depth intervals (9, 14, and 17 <br /> feet) using a driven tube sampler equip?ed with extension rods and a single clean one-inch <br />' diameter stainless steel tube <br /> The results of the field 0VN1 screening of soil samples collected are presented below Soil <br />' samples were collected at 9, 14, and 17 feet below the ground surface The 9-foot sample <br /> would correspond to a depth approximately equal to the bottom of the tank, white the 17- <br /> foot sample would be representative of the capillary fringe zone The presence of <br /> contamination in the sample collected from 17 feet would indi:,ate that groundwater at <br /> that location is contaminated <br /> I Field vadose � <br /> Readings 5808 OVV <br /> Boring No. Total Depth PID Reading <br /> SB-1 9 Ft 0 <br /> I SB-1 _- 14 Ft - 0 <br /> SB-I 17 Ft 249 <br /> SB-2 9 Ft 0 <br /> SB-2 14 Ft +w��- 0 - <br /> SB-2 17 Ft 47 <br /> SB-3 9 Ft 0 <br /> SB-3 14 Ft 0 <br /> SB-3 17 Ft 0 <br /> SB 4 9 Ft 0 <br /> I SB4 _ 14 Ft 14 <br /> SB4 17 Ft 7 <br /> SB-5 _9 Ft 729 <br /> SB-5 14 Ft _ 1,279 <br /> SB-5 17 Ft 854 <br /> SB-6 9 Ft 860 <br /> SB-6 _- 14 Ft 976 <br /> SB-6 _ 17 Ft 853 <br /> SB-7 9 Ft _ 0 <br /> SB-7 _ 14 Ft -� 0 <br /> �SB-7 17 Ft0 <br /> SB-8 9 Ft 0 <br /> SE-8 �W --- 14 Ft ------ U <br /> SB-8 I7 Ft - _ 0 <br />