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Riverdale Drive Improvements <br />Ramsey, Minnesota <br />NTI Project No. 15.61197.100 <br />DRILLING & SAMPLING SYMBOLS <br />SYMBOL DEFINITION <br />C.S. Continuous Sampling <br />P.D. 2-3/8" Pipe Drill <br />C.O. Cleanout Tube <br />3 HSA <br />3'A" I.D. Hollow Stem Auger <br />4 FA 4" Diameter Flight Auger <br />6 FA 6" Diameter Flight Auger <br />2 % C 2 %" Casing <br />4 C 4" Casing <br />D.M. Drilling Mud <br />J.W. Jet Water <br />H.A. Hand Auger <br />NXC Size NX Casing <br />BXC Size BX Casing <br />AXC Size AX casing <br />SS 2" O.D. Split Spoon Sample <br />2T 2" Thin Wall Tube Sample <br />3T 3" Thin Wall Tube Sample <br />General Notes <br />SYMBOL <br />W <br />D <br />LL, PL <br />Qu <br />Qp <br />S <br />G <br />SL <br />pH <br />0 <br />M.A.# <br />C* <br />4; <br />LABORATORY TEST SYMBOLS <br />DEFINITION <br />Moisture content -percent of dry weight <br />Dry Density -pounds per cubic foot <br />Liquid and plastic limits determined in <br />accordance with ASTM D 423 and D 424 <br />Unconfined compressive strength -pounds per <br />square foot in accordance with ASTM D 2166- <br />66 <br />Additional insertions in Qu Column <br />Penetrometer reading-tons/square foot <br />Torvane reading-tons/square foot <br />Specific Gravity — ASTM D 854-58 <br />Shrinkage limit —ASTM 427-61 <br />Hydrogen ion content -meter method <br />Organic content -combustion method <br />Grain size analysis <br />One dimensional consolidation <br />Triaxial Compression <br />* See attached data Sheet and/or graph <br />Water Level Symbol <br />Water levels shown on the boring logs are the levels measured in the borings at the time and under the conditions indicated. In <br />sand, the indicated levels can be considered reliable ground water levels. In clay soils, it is not possible to determine the ground <br />water level within the normal scope of a test boring investigation, except where lenses or layers of more pervious water bearing <br />soil is present and then a long period of time may be necessary to reach equilibrium. Therefore, the position of the water level <br />symbol for cohesive or mixed soils may not indicate the true level of the ground water table. The available water level information <br />is given at the bottom of the log sheet. <br />Descriptive Terminology <br />DENSITY CONSISTENCY <br />TERM "N" VALUE TERM "N" VALUE <br />Very Loose 0-4 Soft 0-4 <br />Loose 5-8 Medium 5-8 <br />Medium Dense 9 —15 Rather Stiff 9 —15 <br />Dense 16 — 30 Stiff 16 — 30 <br />Very Dense Over 30 Very Stiff Over 30 <br />Standard "N" Penetration: Blows per foot of a 140 pound hammer falling 30 inches on a 2 inch OD split spoon. <br />Relative Proportions <br />TERMS <br />Trace <br />A little <br />Some <br />With <br />RANGE <br />0-5% <br />5-15% <br />15-30% <br />30-50% <br />Boulders <br />Gravel - Coarse <br />Medium <br />Sand - Coarse <br />Medium <br />Fine <br />Silt and Clay <br />Particle Sizes <br />Over 3" <br />3/4» 3„ <br />#4—%" <br />#4 - #10 <br />#10 - #40 <br />#40 - #200 <br />Determined by plasticity characteristics. <br />Note: Sieve sizes are U.S. Standard. <br />Page 9 of 14 <br />