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Cambria Environmental Technology, Inc BORINGMELL LOG <br /> 8620 Holly Drive, Suite 200 <br /> Everett, WA 98208 <br /> Telephone 425 353 6628 <br /> Fax 425 3536443 <br /> CLIENT NAME Chevron Environmental Management BORINGIWELL NAME B-5 <br /> JOBISITE NAME 9-1848 DRILLING STARTED 25-Jan-06 <br /> LOCATION 1257 West Yosemite Ave Manteca CA DRILLING COMPLETED 25-Jan-06 <br /> PROJECT NUMBER 61H-2043 WELL DEVELOPMENT DATE(YIELD) NA <br /> DRILLER GreggDrilling and Testing, Inc GROUND SURFACE ELEVATION Not Surve ed <br /> DRILLING METHOD Hydraulic push TOP OF CASING ELEVATION Not Surve ed <br /> BORING DIAMETER 2' SCREENED INTERVAL NA <br /> LOGGED BY R Ratilainen DEPTH TO WATER(First Encountered) 17 8 tt 25-Jan-06 <br /> REVIEWED BY M Miller PG#6008 DEPTH TO WATER(Static) NA Z <br /> REMARKS Cleared to 9tb ier <br /> N <br /> O U b <br /> CL <br /> CL p Z _j W a U a p LITHOLOGIC DESCRIPTION Z= WELL DIAGRAM <br /> FL m0 ¢ X � Qw <br /> As halt 0 3 <br /> SAND with silt Tan, moist,90%medium to <br /> SP coarse-grained sand, 10%silt,nonplastic high estimated <br /> permeability__________________ _ 30 <br /> —silty SAND Dark brown to tan moist, 75%fine-grained — <br /> sand,25%silt, low plasticity high estimated permeability <br /> 0 13-5@5' S SM <br /> 60 <br /> SAND Tan to brown, moist,95%medium to <br /> coarse-grained sand, 5%silt,nonplastic, high estimated <br /> permeability <br /> 10 <br /> 0 B-5@ <br /> 115, <br /> SP <br /> 15 <br /> 0 B-5@16' <br /> Q <br /> 0 B-5@19' — — — --- -- — ----------- 190 <br /> B-5@2 0' — No Recovery hydropunch interval_______ __ 200 <br /> (water) — 20 -- —SAND Tan to brown moist 95%medium to -- Portland Type <br /> !!Il <br /> coarse-grained sand, 5%silt nonplastic, high estimated <br /> Sp permeability <br /> 235 <br /> Silty SAND Tan grey wet,50%fine-grained sand,45% <br /> LL 0 B-5@2 4' SM silt, 5%clay medium plasticity high estimated <br /> 25 _ perme_a-----------------------bility 255 <br /> a —Silty SA_ND Tan grey,wet 85%fine to medium-grained <br /> sand, 15%salt, low plasticity high estimated permeability <br /> SM <br /> 285 <br /> z <br /> 13_5@3 0" = No Recovery hydropunch interval <br /> (water) 300 <br /> = 30 — -- — — — -- — -------- <br /> No Recovery due to hydropunch tip interference <br /> a <br /> o <br /> 340 <br /> a <br /> o — f — ----- — — ---- -- <br /> J 1� Silty SAND_ Tan grey,wet 85%fine to medium-grain-ed <br /> 35 l <br /> Pace r of 2 <br /> Continued Next Page <br />