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Table 3 Soil Boring and Well Construction Details 7-Eleven Store#14117 • 2725 Country Club Boulevard Stockton, California Boring Well Screen Screen Well Drill Depth Diameter Top Bottom Length Comments D Date (feet bgs) (inches) (feet bgs) (feel bgs) (feet) Soil Borings OSGP-1 09/24/98 20 2 -- -- -- OSGP-2 09/29/98 20 2 -- -- OSGP-3 09/29/98 20 2 -- -- -- OSGP-4 09129/98 20 2 -- -- OSGP-5 09/29/98 20 2 -- -- OSGP-6 1 09/29/98 20 2 -- -- -- GP-7 09/29198 20 2 -- -- -- GP-8 09/29/98 20 2 -- -- -- GP-9 10/02/98 20 2 -- -- -- GP-10 10/02/98 20 2 -- GP-11 10/02198 20 2 -- -- -- GP-12 10/02/98 26 2 -- -- -- GP-13 10/02/98 20 2 -- -- -- GP-14 10/02/98 31 2 -- -- -- GP-15 10/02198 20 2 -- -- GP-16 10/02/98 20 2 -- -- -- GP-17 10/02/98 20 2 -- -- -- SB-1 08/14/03 50 8 -- -- East of UST pit GP-1 04/27/05 16 2 -- -- -- GP-2 04/27/05 16 2 -- -- CPT-1 04/27/05 110 2 -- -- -- CPT to collect laboratog samples only CPT-2 04/26/05 110 2 -- -- -- CPT to collect laboratory samples only CPT-3 04/26/05 110 2 -- -- -- CPT to collect laboratory samples only Monitoring Wells & Injection Wells MW-1 05/13/99 30 2 10 30 20 MW-2 05/13/99 51 2 5 25 20 Conductor casing to 13' MW-3 05/13/99 25 2 10 25 15 Crossgradient to tank) um area MW-4 05/14/99 25 2 10 25 15 Crossgradient to UST MW-5 10/30101 20 2 5 20 15 MW-6 10/30/01 20 2 5 20 15 MW-7 10/30/01 20 2 5 20 15 MW-8 08/14/03 50 2 40 50 10 I-1 04/28/05 25 5 2 20 25J 5 Oxygen Injection Well Proposed Borings and Wells MW-9 pending 202 5 20 15 Offsite well on Former Exxon MW-10 pending 20 2 5 20 15 Offsite well southeast of site Ex lanation Weals are of poly-vinyl-chionde(PVC)construction bgs=Below ground surface UST=Underground storage tanks File 7-11Stores114117rrables114117 Current Well Boring Sum As Page 1 of 1