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Cambria Environmental Technology, Inc <br /> 1 144 - 65th St BORING/WELL LOG <br /> Oakland, CA 94608 <br /> Telephone (510) 420-0700 <br /> Fax (510) 420-9170 <br /> . CLIENT NAME BP Oil Company _ BORING/WELL NAME MW-8 <br /> JOB/SITE NAME BP-11193 DRILLING STARTED 13-Jun-00 <br /> LOCATION 3202 West Hammer Lane, Stockton,California DRILLING COMPLETED 13-Jun-00 <br /> PROJECT NUMBER 852-1530 WELL DEVELOPMENT DATE(YIELD) 14-Jul 00 <br /> DRILLER V&W Drilling GROUND SURFACE ELEVATION 423 <br /> DRILLING METHOD Hollow-stem auger TOP OF CASING ELEVATION 3 90 ft <br /> BORING DIAMETER 10" SCREENEDINTERVAL _. 33 to 48 ft bgs _ <br /> LOGGED BY J Jones DEPTH TO WATER(First Encountered) 13 0 ft(13-Jun-00) Q <br /> REVIEWED BY K Rahman RG DEPTH TO WATER(Static) NA 1 <br /> REMARKS Hand au ered to 5'b s continuous core sam led using 8"augers,over drilled with 10 augers for installation located 23'from fac <br /> a � <br /> CL n U) z =y u1 b.0 <br /> a, O a H w U ¢O LITHOLOGIC DESCRIPTION WELL DIAGRAM <br /> CL d m0 ¢ �� J pa <br /> H U CO 0 w <br /> 0 <br /> ASPHALT 05 <br /> Silty SAND (SW, light brown,dry 20%silt 80%fine to <br /> medium grained sand no plasticity High estimated <br /> permeability <br /> 3'-dark gray <br /> SM <br /> 5 <br /> 5'- brown <br /> 0 MW 8- <br /> i 8d <br /> SAND (SP) dry 10%silt, 90°/fine is medium grained <br /> sand no plasticity high estimated permeability <br /> 10 <br /> SP <br /> 0 082 Mw 8 @ 12' -moist <br /> 12 <br /> o Mw 8 @ 13 -olive brown saturated fine to coarse grained 140 <br /> 135 sand <br /> 15 Silty SAND (SM), brown moist to wet 40%silt,60% Portland Type <br /> fine grained sand, low plasticity,high estimated Ill! <br /> permeability <br /> 4� 16' -wet 30%silt, 65%fine to coarse grained sand <br /> 0 5%gravel no plasticity <br /> a <br /> 0 0 Mw 8 Q 19 -30%silt 60%fine to medium grained sand 10% <br /> 19 20 gravel <br /> J <br /> w @ 21'-brown mottled with olive brown wet to saturated <br /> SM 20%silt 80%fine to medium grained sand <br /> c� <br /> rn <br /> CL 0 Mw 8 @ 24'-stringers of saltier material <br /> G 24 25— <br /> Z <br /> 9 0 Mw 8 <br /> 7 26 <br /> rn <br /> m <br /> r <br /> 30 30 0 Bentonite Seal <br /> 0 0�4 Mw a SAND, (SP),dark brown,saturated 10%silt, 90%fine <br /> 30 to medium grained sand,no plasticity high estimated <br /> CL permeability <br /> Monterey <br /> a Sand#2112 <br /> °o @ 33'- 5%silt, 95%fine to medium grained sand <br /> J <br /> J <br /> � 35 <br /> Continued Next Page PAGE r of 2 <br />