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' ❑0® GROUNDWATER TECHNOLOGYINC. Monitoring Well OW-1 Drilling Loc o ject PG do E / TRACY Owner PACIFIC GAS do ELECTRIC CO. Sketch Map ' ocation TRACY,CA Project Number 203-799-8258 Date Drllled �2 22 87 Total 'Depth of Hole 26.5 FT Diameter 10.5 IN Surface Elevotlon Water Level Initial 8.5 FT 24–hour ' Screen: Oia._ 2 1N Length 20 FT —Slot Size .010 iN Casing: Dia. 2 IN Length 5 FT Type PVC Drilling Company SIERRA PACIFIC Drilling Method HOLLOW STEM AUGER Driller BEN HUNT Log by C. DeSOCIO Notes Geologist / Engineer License No. 4 394- 1 Descriptlon/Soil Classification ' g as (Color,Texture,Structures) 0 3 inches of asphalt over 6 inch base course . a Black silty clay 2 ;q (Medium stiff, moist, slight odor–Lampblack [PNA]) o (Grades lighter color) .; CL Black silty clay 4 (Medium stiff, moist. no product odor) ' 6 ;r Block silt clay CL (Med�um stiff, moist, slight odor–Lampblack [PNA]) 15 o A Brown silt clay 8 (Medium stiff, moist, no product odor) - 4 CL Encountered water 12/22/87 (0830 hours) Block silty clay - 10 0.0 8 (Medium stiff, moist, slight odor–Lampblack [PNA]) ir F 10L.Brown sandy silt (Loose, moist, no product odor) - 12 l Brown fine sandy, silty clay i` (Medium stiff, wet, no product odor) L (Grades less sandy) 14 Brown silty clay � (Medium stiff, wet, no product odor) _ 00 G (Grades more sandy) 16 - 6H Brown fine sandy slit ML (Medium stiff, wet, no product odor) (Grades more sandy) (Grades with tine gravel) in (Grades with some clay) 20 O o Brown silty sand with fine medium gravel r 4 (Poorly sorted, medium dense, wet, no product odor) 22 fl' SM (Grades less gravel) 2 4Y Brown sand :r ., . .gpIdw (Well sorted, medium dense, wet, no product odor) I/ar acv • _ c,,,,� „s _2