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WELL LOG <br /> KEY TO ABBREVIATIONS <br /> Drilling Melhod Gravel Pack <br /> HSA- Hollow stem auger CA- Coarse aquarium sand <br /> CFA- Continous flight auger <br /> Air- Reverse air circulation <br /> Sampling Method <br /> Cal Mod - California modified split-spoon sampler (2" inner diameter) driven 18" by a <br /> 140-pound hammer having a 30" drop Where penetration resistance is <br /> designated "P", sampler was instead pushed by drill ng <br /> Disturbed - Sample taken from drill-return materials as they surfaced <br /> Shelby - Shelby Tube thin-wailed sampler (3" diameter),where sampler is pushed by drill-rig <br /> Moisture Content Sorting Plasticity H-NU rn <br /> Dry -Dry PS - Poorly sorted L - Low ND - No detection <br /> Dp -Damp MS - Moderately sorted M- Moderate <br /> Mst - Moist WS - Well sorted H -High <br /> Wt -Wet <br /> Sat -Saturated Sample Preserved for <br /> Laboratory Testing <br /> Symbols <br /> n <br /> I sample <br /> - First encountered ground water sampled recovery A <br /> it} k <br /> interval <br />. -Static ground water level >k <br /> Density._ (Blows/Foot - Cal Mod Sampler <br /> Sands and gravels Silts and Clays <br /> 0-5 -Very Loose 0-2 -Very Soft <br /> 5- 13 - Loose 2-4 -Soft <br /> 13 -38 - Medium dense 4-9 -Firm <br /> 38-63 - Dense 9-17 -Stiff <br /> over 63 - Very dense 17- 37 -Very Stiff <br /> 37-72 - Hard <br /> over 72 -Very Hard <br /> GRAIN -- SIZE SCALE <br /> GRADE LIMITS GRADE NAME <br /> U S Standard <br /> inch sieve size <br /> ------ Boulders <br /> --- --- <br /> -- 3 0 -- 3 0 in ------------.��— Cobbles --�--- <br /> 0 19 No 4 — Gravels <br /> 0 08 -- —coarse <br /> No 10 --------- <br /> -- No 40 ------- medium ------- Sand <br />• -------- No 200 -------- fine -----_------ ---�-- - <br /> Silt _ <br /> Clay Size J <br /> PACIFIC ENVIRONMENTAL GROUP, INC <br />