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I <br /> Advanced BORING LOG <br /> GeoEnvironmental, Inc. BOREHOLE NO. : MW4B <br /> 4005 North Wilson Way, Stockton, CA 95205 <br /> (209) 467A006 FAX: (209) 467-1118 TOTAL DEPTH: 501 <br /> Project: Stallworth Auto Sales Drilling Co. : Mitchell Drilling Environmental <br /> Site Location: 602 North California Street Rig/Auger Type: CME 75HT - 8" Hollow Stem Auger <br /> Stockton, California 95205 Logged By: Brian W. Millman <br /> Reviewed By: Nuel Henderson <br /> Project No. . AGE NC-99-0682 <br /> Date(s) Drilled: 23 May 2000 <br /> Notes: Groundwater encountered at 35 feet b.s.g s Water level during drilling Page 1 of 1 <br /> z Water level in completed well <br /> Depth Sample Blows PID Soil USCSClass and Well Well <br /> ID f ft. (ppm) Symbol Soil Description Completion Description <br /> 0 <br /> - 5 MWIB-5 2/2/3 101 _ <br /> SM: Dark brown, damp, SILTY SAND; fine sand, <br /> loose, no hydrocefion odor (HQ. <br /> 10 MWiB-to 6/8/9 75 <br /> SP: Tan, dry, POORLY GRADED SAND; fore sand, <br /> medium dense, no HC odor, <br /> CL Brown, damp, CLAY, stiff no HC odor. <br /> - 15 — MR,IB-IS 8/10112 1999 - - SM: Light brown, dry, SILTY $AND; tine sand, 35% Cement grout seal from <br /> silt, HC odor. .5' to 25' bag <br /> 20 MWIB-20 6/10113 1999 = - <br /> - — ML:. Brown, moist, CLAYEY SILT;.very stiff, HC <br /> — — <br /> or. <br /> MW 1 R•25 8/11/13 1999 ML: Brown,moist, CLAYEY SILT very stiff, HC <br /> or. Bentonite seal from 25' <br /> to 28' bag. <br /> - 30 MWIB-30 10/13/[5 1999 <br /> SM: Darkbrown,satureted, SILTY SAND; fine sand, <br /> - dense, 25% silt, HC odor. <br /> MWIB-35 10/11/16 1999 CL: Lightbro m, saturated, SILTY CLAY; very stiff, <br /> HC odor. <br /> -40 - <br /> - <br /> 40 MWIB40 13/15/19 1999 =_ <br /> _—_— ML; Brown, saturated;CLAYBXSILT; verystiff, HC - #2112 sand form 26' to <br /> odor. 50' bsg. <br /> -45 MWIB45 9/12/17 278 <br /> CL: Brown to gray, very moist, SILTY CLAY; very Screened interval from <br /> still, HC odor. 301 to 50' bsg. <br /> - 50 MMIB-50 6/9/13 255Cap at 501 <br /> , <br /> CL: Brown, saturated, SILTY CLAY; very stiff; HC <br /> odor. <br />