2024-02-26_PERMIT FILE - M2024005

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UNIFIED SOIL CLASSIFICATION SYSTEM 73 Soil Classification Criteria for Assigning Group Symbols and Group Names Using Laboratory Taste" Group • Symbol Group Name' Coarse-Grained Gravels more than Clean Gravels Less Cu > 4 and 1 <Cc S 9i GW Well-graded gravel' Soils more than 50%of coarse than 5%fines° 50%retained on fraction retained on No. 200 sieve No.4 sieve Cu < 4 and/or 1 >Cc > 3' GP Poorly graded graver Gravels with %f moret than 12%finest Fines classify as ML or MM GM Silty gravel,G,H Fines classify as CL or CH GC Clayey graver" Sands 50%or more Clean Sends Less Cu>6 and 1 <Cc < 3' SW Well-graded sand' of coarse fraction than 5%fines' passes No.4 sieve Cu < 6 and/or 1 >Cc > 3' SP Poorly graded sand' Sands with Fines Fines classify as ML or MH SM Silty sand°!•' more than 12%fines° Fines Classify as CL or CH SC Clayey sand"J Fine-Grained Soils Silts and Clays inorganic PI > 7 and plots on or above"A line CL Lean clay41•1' 50%or mora Liquid limit less passes the than 50 Pi < 4 or plots below "A"Mei ML Siit1'0" No. 200 sieve organic Liquid limit-oven dried • • Organic clay " < 0.75 OL Liquid limit-not dried Organic silt'"-10 Silts and Clays inorganic PI plots on or above'A"line CH Fat clay""'' Liquid limit 50 or more Pilots below"A"line MH Elastic Silt".'" organic Liquid limit-oven dried Organic cley14-11•' < 0.75 OH Liquid limit-not dried Organic silt1"11.O Highly organic soils Primarily organic matter,dark in color, and organic odor PT Peat ABased on the material passing the 3-in. 9f soil contains 15 to 29%plus No. 200,add (75-mm) sieve .sCu-D /D Ce - (D7o)a "with send" or'with gravel",whichever is °If field sample contained cobbles or iO 1` Die x Dia predominant. boulders,or both, add"with cobbles or `1f soil contains>30%plus No. 200 boulders,or both' to group name. predominantly sand,add"sandy" to group °Gravels with 5 to 12%fines require dual 'If soil contains>15%sand,add"with name. symbols: sand" to group name. °If soil contains>30%plus No. 200, GW-GM well-graded gravel with silt °If fines classify as CL-ML,use dual symbol predominantly gravel, add"gravelly"to group GW-GC well-graded gravel with clay GC-GM,or SC-SM. name. GP-GM poorly graded gravel with silt "If fines are organic,add 'with organic fines' "PI > 4 and plots on or above "A"line. GP-GC poorly graded gravel with clay to group name. °PI < 4 or plots below"A"line. °Sands with 5 to 12%fines require dual hf soil contains>15%gravel,add*with 'P1.plots on or above"A'line. symbols: gravel'to group name. °PI plots below"A"line. SW-SM well-graded sand with silt if Atterberg limits plot in shaded area,soil is SW-SC well-graded sand with clay a CL-ML. silty clay. SP-SM poorly graded sand with silt SP-SC poorly graded sand with clay '0 eI i I KW*Wel I / Flt n..'" h..11M.a await- 00 , M wi- Ji.� 14110 TI-46r0 IL 73.3 �:E a..o,-a.7saLl-a» 1 O ,p p _ J then w a... 111 b sj-7. O- ra C io ;-•C>4 OS' El. .' MH OR OH to • '4 `=x01To"' ML OR OL a o le Ia 70 30 Ia Da ao 70 00 10 IW IIC I1quID L1)11T (11.) Empire Laboratories, Inc. A Division of The Terracon Companies, Inc.