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I <br /> Drilling Log <br /> ❑❑® GROUNDWATER Monitoring Well MW-7 <br /> ❑❑❑ TECHNOLOGY <br /> Project Chevron/Benjamin Holt Owner Chevron USA Products Co See Site Map <br /> For Boring Location <br /> Location 2,905 W Benlamrn Holt 0r _ Project No 02320-2241 Date drilled 3/3/92 <br /> Surface Elev Total Hole Depth 315 ft Diameter 81' COMMENTS <br /> Top of Casing Water Level Initial 18 0 ft Static 175 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,obt_Spoon ._ <br /> Drilling Company Sierra Pacific Method Hollow Stem Auger Permit # <br /> Driller Manuel Ar urlloLog By Steve Kranyak <br /> Checked By Ed Smonrs License No RG 4422 <br /> c c U <br /> _ Description <br /> —m �E 'U t� m P <br /> 0 ca <br /> O.w 0— H0. 'a 0 Qp <br /> o.. X o a s E �, -� cn (Color, Texture, Structure) <br /> m °¢ (n Trace < 10%, Little 10% to 20%, Some 20% to 35%, And 35% to 50% <br /> c� V)FOR M <br /> _2 <br /> O Bark over brown silty sandy CLAY (soft, moist, no <br /> hydrocarbon odor) <br /> 2 < < <br /> 4 < <br /> to <br /> 6 n <br /> S CL <br /> 10 1 B io <br /> 12 <br /> 14 <br /> 12 <br /> 14 <br /> 2 C 11 <br /> 16 15 Brown silty clayey very fine SAND (loose, very moist no <br /> hydrocarbon odor) <br /> 18 — Encountered water 3/3/92 (1400 hours) <br /> SM <br /> 20 _ 0 D to <br /> Iz <br /> 14 <br /> 22 = Brown sandy SILT (soft, very moist, no hydrocarbon odor) <br /> SM <br /> 24 - <br /> 04/02/1992 <br /> 4 = <br /> 04/02/19921,thlog-mart/ Page 1 of 2 <br />