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ASSOCIATES INC. <br /> 111AIm Polm J~le,kddo,Wairio,Ml LOG OF WELL MW4 <br /> PROJECT —_ STAGG HIGH SCHO L LOCATION 1621 BROOKSIDE ROAD. STOCKTON, CALIFORNIA PROJECT NO. 17292.0002 _ <br /> DATE DRILLED LOGGED BY JENNIFER COX REVIEWED BY <br /> DRILLING COMPANY VacW ❑Ru I ING INC, DRILLER METHOD HOI I OW STEM AUGER <br /> BORE HOLE DIAMETER -_ 8 IN DEPTH DRILLED 27 FT DEPTH TO WATER INITIAL ^-13 FT STATIC FT <br /> CASING TYPE PVC DIAMETER 2 IN SCHEDULE 40 INTERVAL - 0 FT TO 10 FT <br /> SCREEN TYPE EVC DIAMETER --2 IN SLOT SIZE 0.020_ 1N INTERVAL la ET TO 30 FT <br /> FILTER PACK TYPE 511 ICA 13 SAND INTERVAL a FT TO 30 FT <br /> SURFACE SEAL TYPE T CEMENT OVER BENTONITEINTERVAL 0 FT <br /> TO 8 FT <br /> COMMENTS: <br /> PAGE 1 OF <br /> WELL DEPTH PID SAMPLE ID LITHOLOGIC DESCRIPTION <br /> DETAIL FT. PPM BLOWCOUNT LOG <br /> 0-2" -- Asphalt <br /> 2 <br /> 4 <br /> 14 MH <br /> 0 2'-6.5/10' ELASTIC SILT (MH); <15% FINE SAND; POORLY GRADED; >85X FINES <br /> 6 7 2LOW-MEDIUM DRY STRENGTH; NONE TO SLOW DILATANCY; <br /> 25 LOW-MEDUIM TOUGHNESS; LOW PLASTICITY; NO CHEMICAL ODOR <br /> NOTED; MODERATE YELLOW BROWN; DRY; HOMOGENOUS <br /> 8 <br /> 10 <br /> 7 CL 6.5/10-11.5/15 LEAN CLAY (CL); <10% FINE SAND; POORLY GRADED; >90% FINES; <br /> = 7 <br /> 10 MEOIUM-HIGH DRY STRENGTH; NO DILATANCY; MEDIUM <br /> 22 TOUGHNESS; MEDIUM PLASTICITY; OLIVE GRAY BROWN; NO CHEMICAL <br /> 12 ODOR NOTED; NO ORGANIC CONTENT; DRY; HOMOGENOUS <br /> ! = 14 <br /> MW4-15' <br /> 8 MH 11.5/15-16.5/20 ELASITC SILT (MH) ; <10X FINE SAND; >90X FINES; <br /> 16 7 10 LOW TO MEDIUM DRY STRENGTH; NONE TO SLOW DILATANCY <br /> 18 LOW TOUGHNESS; NONE TO LOW PLASTICITY; OLIVE GRAY BROWN <br /> NO CHEMICAL ODOR NOTED; WET; HOMOGENOUS <br /> = 18 <br /> _ 20 5 CL LEAN CLAY WITH SAND (CL); <20X FINE SAND; >BOX FINES; <br /> 7 10 16.5/20-21.5/25 <br /> MEDIUM TO HIGH DRY STRENGTH; NONE TO SLOW DILATANCY <br /> 12 MEDIUM TOUGHNESS. LOW PLASTICITY; LIGHT BROWN ORANGE <br /> ?_ 22 NO CHEMICAL ODOR NOTED. NO ORGANICS. WET; <br /> 7 LENSED OF ORANGE BROWN CLAY; HOMOGENOUS <br /> 24 <br /> _ MW4-25' <br /> 5 <br /> 26 14 <br /> ML 21.5/25-30' SILT WITH SAND (ML); >20X SAND; POORLY GRADED; <110% FINES; <br /> NONE TO LOW DRY STRENGTH; SLOW TO RAPID DILATANCY; LOW <br /> 28 TOUGHNESS; NO PLASTICITY, MODERATE YELLOW BROWN; NO <br /> CHEMICAL ODOR NOTED; NO ORGANIC CONTENT; WET. HOMOGENOUS <br /> 30- <br /> 32- <br /> -34---J 34 <br /> 36- <br /> -38- <br /> 40- <br /> 42 <br /> fi384042 <br />