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<br /> LITHOLOGIC DESCRIPTION
<br /> MONI'T'ORING WELL LOG
<br /> Well I.D.: MW-4 Date(s) of Drilling: 7114192
<br /> Location: . NE of Former Tank Area
<br /> Client: San Joaquin County Drilled Depth: 71 feet
<br /> Mosquito Abatement District Hole Diameter: 8 inches
<br /> Project No.: 06778-001-001
<br /> Contractor, West Hazmat Well Construction Details:
<br /> Driller: Gene Rheinholt 70 feet
<br /> Drilling Method: Hollow Stem Auger (HSA) Well Depth:
<br /> Well Diameter: 4 inches
<br /> Decon Method: Steam-cleaning Casing Type: Schedule 40 PVC
<br /> Sampling: Continuous Core Barrel and Screen Type: Schedule 40 PVC
<br /> Split-spoons at 10-foot intervals Screen Interval: 502 O070 feet
<br /> Screen Slot:
<br /> Elevation - Feet (MSL): Materials:
<br /> Ground surf: Not measured Sand Pack: Lonestar #1C
<br /> Casing top: 54.43 Grout: 3-5% bentonite/cement grout
<br /> a Completion Type: Flush Christy Box
<br /> Geologist: D. Marks Cap: Expandable Locking
<br /> u
<br /> HNu
<br /> Depth interval BlowValue
<br /> Ifeet BGS Counts USCS SymbolilDescriptian Remarks
<br /> 1!
<br /> 0-3 SM SAND (Fill): medium brown gray,very fisc to coarse,
<br /> loosely consolidated,silty, poorly sorted, dry, no apparent
<br /> I! I odor,no apparent staining, 75% sand, 15% silt, 10% clay.
<br /> �flv fine to fine, loosely consolidated,
<br /> 1
<br /> iiiillJl 3 - 11.5 6, 5, 12 SM SAND: medium reddish brown, cry
<br /> consolidated,moist, no apparent odor, no apparent staining,
<br /> moderate to highly ddatency,no dry strength, 85% sand,
<br /> W15% silt.
<br /> 11.5- 17 SC-SM SAND: medium reddish brown,moist to slightly wet, wet
<br /> from 12 to 13 feet, clayey, very fine to medium, oceasionai
<br /> pebbles,poorly sorted, subangular to well-rounded,loosely
<br /> consolidated,no apparent odor,no apparent staining, slight
<br /> dry strength,no dilatcncy, 80% sand, 10% clay, 10% silt.
<br /> Ijl
<br /> 17- 19 CL CLAY. medium reddish brown to grayish brown, dry to
<br /> I4� slightly moist, firm, blocky,high dry strength,no
<br /> u1 dilateney,no apparent odor, no apparent staining, hmit ai
<br /> ed with dark carbonaceous material, 85% clay, 15% silt.
<br /> 1. Unified Soils Classification System
<br /> S snccvirrstiucMAD.wr
<br /> A
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