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Drilling Log <br /> GROUNDWATER <br /> ❑❑ TECHNOLOGY Monitoring Wel! MW-1 <br /> Project Location508Cha(errwav SfoCktokpn <br /> Owner Chevron USA Products Company <br /> n CA Proi. No. 02070 OOI'f <br /> 0 � 0 U OD Description <br /> a a,a o v U o a.a U P <br /> Q1 - E n a E X u -+ <br /> O (Color, Texture, Structure) <br /> ° i° ° rn Trace < 10%. Little 10% to 20%. Some 20% to 35%, And 35% to 50% <br /> U N oo x D <br /> - 24 Sandy silty CLAY (cont). <br /> CL <br /> < < 34 -25' T <br /> Silty CLAY (40,60): green-gray, moist, moderate hydrocarbon <br /> 26 15s CL odor, <br /> 28 (grades clayey sandy SILT 30,30,40) <br /> ML <br /> Mw-1 <br /> 3 <br /> 62 -30' 9 <br /> 8 Medium SAND: greenish gray, well sorted, augular/subangu[ar, loose, <br /> 32 — moist, moderate hydrocarbon odor. <br /> SP <br /> 34 <br /> Mh'-3 <br /> 38 -35' Encountered Wafer, 03/15/95, 1018 hrs. <br /> 36 Silty CLAY (25,75): tan, moist to wet, moderate hydrocarbon odor. <br /> CL <br /> 38 <br /> _ Clayey, silty very tine SAND (20,40,40): dark gray/green gray, <br /> MW_1 <br /> 40 2 -40. 6 with dark brown plant/twig fragments. <br /> n <br /> — n <br /> 42 <br /> Mt- <br /> -44 - - , <br /> L44 <br /> MW-1 Clayey SILT (45,55): dark green-gray, wet, moderate degraded <br /> 7 -45' 8 CL hydrocarbon odor. <br /> 46 - 12 <br /> s3 sP l_ense of medium SAND. <br /> 4 8 <br /> CL <br /> MW_1 Clayey medium SAND (10,90): dark green-gray, subrounded, with <br /> 50 - 3 _50. 10 silty clay lenses, wet, moderate degraded hydrocarbon odor. <br /> it wrs <br /> 17 <br /> 2 End of boring. Installed groundwater monitoring well. <br /> - 54 - <br /> - 56 <br /> 4- 56 <br /> 04/12/1995 Page: 2 of 2 <br />