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HAW GROUNDWATER <br />TECHNOLOGY <br />Monitoring Well MW-4 <br />Drilling Log <br />Project Chevron - Tracy, Grant Line Owner Chevron USA Products Company See Site Nap <br />For Boriv Location <br />Location 575 Grant Line Road, Tracy, CA Prol, No 02070 0138 <br />Surface Elev Total Hole Depth 215 ft Diameter Sin COMMENTS <br />Top of Casing Mater Level Initial 12 ft Static 6 60 ft <br />Screen. Dia 2 In Length /5 11 Type/Size Sch 40 PVC/0020 in <br />Casing- Dia 2 In Length 5 ft Type Sch 40 PVC <br />FM Material .3 Sand Rig/Dore CME-55 Downnole/Spill Spoon <br />Drip co SE. , Inc Method Hollow Stem Auger/PIO <br />Driller Tyke Van Zandt Log By Brian mcAloon Date 05/02/95 Permit 0 005901 <br />Checked By Ed &monis License No RG#4422 <br />ci uOitaidwoo Dam , Sample ID Blow Count/ x Recovery 0 <br />6 <br />0 <br />v, <br />ih <br />in) <br />D <br />Description <br />(Color, Texture, Structure) <br />Trace < 10%, Little 10% to 20%. Some 20% to 35%. And 35% to 50% <br />..--. <br />- <br />- 12 - <br />- 14 - <br />. <br />- 16 - <br />- <br />- 18 - <br />- 20- <br />. <br />- 22 -- <br />-24- <br />_ <br />q <br />.4 <br />I r <br />-11 5 <br />30 <br />140 <br />60 <br />20 <br />4 <br /> <br />mkii-4 5 <br /> <br />-60 8 <br />10 <br /> <br />Poi- 4 12 <br />14 <br /> <br />Poi-4 <br />18 <br />-165 <br />ii <br /> <br />Imiii- 4 14 <br />, <br />p <br />8com. <br />1,d1 <br />.11 <br />_./ <br />11 <br />, <br />1, <br />CL <br />CL <br />C <br />CL <br />To soil over sandy silty CLAY (10,40,50) very dark gray, damp, <br />hydrocarbon odor <br />Silty CLAY (50,50) gray, moist soft, hydrocarbon odor <br />T Static Water, 05/02/95 <br />Sandy silty CLAY (10,40,50) light brown, moist to wet, stiff, no <br />hydrocarbon odor <br />7 Encountered Water 05/02/95 (drillers call) <br />Sandy silty CLAY (2040 40) Drown dry to dam still, crumbly. no <br />hydrocarbon odor <br />Silty CLAY 110 90) with lenses of sandy clayey SILT (IS 40 45) <br />Carlo to moist no hydrocarbon odor <br />3 -21 5 r--- Installed monitoring End oDoting well <br />06 /2 9/1995 iohlog-re' <br /> <br />Pace of