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Drilling Log <br /> ❑0❑❑® GROUNDWATER Monitoring Well MW-7 <br /> TECHNOLOGY <br /> Protect Chevron/Benramin Holt Owner Chevron USA Products Co See Site Map <br /> Location 2905 W Benjamin Holt Dr Protect No 02320-2241 pate drilled 3/3/32 For Boring Location <br /> Surface Elev Total Hole Depth 315 ft Diameter 8"1 COMMENTS <br /> ' Top of Casing Water Level Initial 18 0 ft Static 17 5 ft <br /> Screen Dia 2 in Length 20 ft Type/Size 0 020 In <br /> Casing Dia 2 in Length 10 ft Type SCh 40 PVC <br /> Filter Pack Material Lapis Lustre #2/12 Rig/Core Type Mobile B-53/S 1,t Spoon <br /> ' Drilling Company Sierra Pacific Method Hollow Stem Auger Permit # <br /> Driller Manuel Arquillo _ _ Log By Steve Kranyak <br /> Checked $y Ed Simonis License No RG 4422 <br /> 1 —C Off„T U <br /> L-- p `" `" `2 � Description <br /> a� OE � � <br /> CL QL) Qo U <br /> cu_ X e n a t= #u (D rn (Color, Texture. Structure) <br /> ' U U1mx [7 in Trace < 10%. Little 10% to 20%, Some 20% to 35%. And 35% to 50% <br /> ' 0 <br /> Bark over brown silty sandy CLAY (soft, moist, no <br /> ' hydrocarbon odor) <br /> 2 < < <br /> M < < <br /> 4 < < <br /> c c 0 A s <br />' 10 <br /> 6 u <br />' $ <br /> CL <br /> 10 1 H 10 <br />' = <br /> 12 <br /> 14 <br /> 12 <br /> 14 = <br /> = z c i, <br /> 14 <br /> 16 15 Brown silty clayey very fine SAND (loose, very moist, no <br /> hydrocarbon odor) <br /> 1$ � Encountered water 3/3/92 (1400 hours) <br /> SM <br />' 20 = 0 D 10 <br /> — 12 <br /> 14 <br /> 22 _ Brown sandy SIL T (soft very moist, no hydrocarbon odor) <br /> SM <br /> r24 - <br /> 04/02/1992 <br /> 4 04/02/1992 hthlog-mar 92 Page i of 2 <br />