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TRIPLE NESTED SOIL VAPOR EXTRACTION WELL LOG <br /> PROJECT NAME San Joaquin County Motor Pool UST Site LOG OF WELL SVE-1AIB/C <br /> Sl7E ADDRESS 1810E Hazelton Avenue BORING DIAM ([n) 10 <br /> Stockton California WELL DIAM in 2 <br /> ' DATE STARTED February 23 2005 DRILLERICOMPANY Van Leonard <br /> DATE COMPLETED February 23 2005 Woodward Drilling C-57#710079 <br /> DRILLING METHOD Hollow-stem Auger(BK-81) GEOLOGISTIENGINEER R David Smith R G <br /> S ItE-s n sam ler Rama a Environmental <br /> O m <br /> m m <br /> LL a W J �� <br /> E W O r S <br /> ' a a m [n m z a <br /> � " m a tan z j ui DESCRIPTION 0 <br /> p 11111 Four inches of asphalt undertain by base Hand dug to 5 feet 0 <br /> CLAYEY SILT Grades from dusky yellowish brown to moderate yellowish <br /> ' brown sGghtty moist medium stiff no odor <br /> 5 „ 22 5 <br /> n � <br /> Unit becomes pale yeltovnsb brown stiff traces of whitish"cahc he" <br /> 10 ;, 43 ML at 10 feet no odor 10 <br /> Unit becomes moderate yellowish Drown very stiff at 14 feet no odor <br /> 15 X46 53 15 <br /> 20 tr 63 SILTY CLAY Moderate yellowish brown slightly moist very stilt low 20 <br /> — <br /> plasticity no odor <br /> Unit becomes moist stiff at 25 feet <br /> 25 7 i SVE 1 zs 25 <br />' p CL <br /> Unit becomes very stiff at 30 feet no odor <br />' 30 ;b 158 30 <br /> 35 <br /> i 35 107 SVE 1 35 CLAYEY SILT WITH SAND Moderate yenowrsh brown moist stiff 35 <br /> u very fine micaceous sand slight odor <br /> ML <br />' 40 24D SVE 140 SANDY SILT Moderate yellowish brown moist medium stiff micaceous 40 <br /> odor <br /> 1 <br /> 45 s <br /> 175 SVE 1 45 SILTY CLAY Moderate brown moist very stiff micaceous odor 45 <br /> 'O CL <br />' Saturated sort observed of 50leef bgs on 2/23105 <br /> $Q NR SANDY SILT Moderate yellowish brown wet very stiff micaceous 50 <br /> ML <br /> Li <br /> $$ wb> 164 SVE 1 55 CL CLAY Moderate yellowish brawn moist verystiff odor 55 <br /> Terminated drilling at 55 feet sampled with spot spoon to 56 feet <br /> Installed triple nested sal vapor extraction wells SVE 1A SVE 18 SVE 1C <br /> SVE 1C Well Screen(0 020-inch)from 44 to 54 feet #3 Sand from 42 to 55 feet <br /> 60 Hydrated bentonite from 38 to 42 feet 60 <br /> SVE 16 Well Screen{0 020-inch)from 28 to 38 feel #3 Sand from 26 to 38 feet <br /> Hydrated benionite from 22 to 26 feet <br />' SVE 1A Wefl Screen(0 020 rnch)from 12 to 22 feet #3 Sand from 10 to 22 feet <br /> 65 Hydrated bentonite from 6 to 10 feet Neat cementtbentornte(20 1)grout from 1 to 6 feet &5 <br /> Wellneads cam leted within 18 inch traffic rated security box in concrete at grade <br /> 7 aft <br />