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Drlllin M h rravel Pick <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 samplor(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 rig. <br /> Disturbed -Sample taken from drill-return materials as they surfaced. <br /> Shelby -Shelby Tube thin-walled sampler(3" diameter),where sampler is pushed by drill-rig. <br /> Molsturp Content SortinaPlasticity H-NU (ppm) <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 /> $Ymbols <br /> - round water sample <br /> First encountered <br /> g sampled recovery <br /> - Static ground water level interval <br /> Density (Blows/Foot - Cal Mod Samp�r�. <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 /> 12 0 — Boulders <br /> Cobbles <br /> 0.19 No. 4 - - -- - - _ . _. . Gravels. _ <br /> coarse <br /> 0.08 -- No. 10 - ------_-__ -------- --- - - -------- - - <br /> --— No. 40 - —--- _- -medium - -— Sand-- -- - - <br /> No. 200 - <br /> fine <br /> - - -- -- -----_---------� - - f- -- -- --- -- -- - - --- - - -- - . . <br /> Silt <br /> Clay Size <br /> PACIFIC ENVIRONMENTAL GROUP. INC. <br />