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DRILLING COMPANY: Holt Services, Inc. DATE STARTED: 2/28/2023 <br />DRILLING METHOD: Hollow Stem Auger, Mobile Drill 657 Track Rig. DATE COMPLETED: 2/28/2023 <br />SAMPLING METHOD: SPT w/ Autohammer LOGGED BY: V. Oskierko <br />LOCATION: See Figure 2. <br />1 20 - <br />1 25 - <br />m <br />w <br />0 <br />Z <br />Of <br />W <br />v <br />a} <br />�s <br />co <br />a <br />J <br />O0 <br />W <br />w <br />Lu <br />~ Z <br />J <br />J <br />X(p <br />n <br />u}i <br />Z) <br />DESCRIPTION <br />vi <br />(n <br />Lu O <br />0- g <br />of <br />O 0 <br />OL <br />Medium stiff, dark brown, organic SILT, with roots, moist. <br />3-1 <br />2-2-2 <br />= <br />(TOPSOIL) <br />CL <br />Medium stiff, dark brown, sandy, lean CLAY, moist, with trace <br />organic matter. <br />S-2 <br />0-1-3 <br />(FINE-GRAINED ALLUVIUM) <br />S-3 <br />9-10-10 <br />GW <br />Medium dense, grayish brown, slightly silty, fine to coarse <br />• <br />GM <br />sandy, poorly -graded GRAVEL, moist. <br />H <br />• <br />California sampler driven. <br />• <br />(COARSE -GRAINED ALLUVIUM) <br />• <br />Poor recovery. Only recovered broken rock. <br />S4 <br />4-6-10 <br />• <br />• <br />---------------------- <br />V <br />GP <br />Very dense, grayish brown, slightly silty, very sandy, poorly <br />S-5 <br />10-20-31 <br />° <br />GM <br />graded GRAVEL, wet. <br />O <br />Rough drilling from 10'-12.5' BGS. <br />GW <br />---------------------- <br />Dense, grayish brown, slightly silty, very sandy, well graded <br />S-6 <br />9-8-20 <br />GS <br />• <br />GM <br />GRAVEL, wet. <br />• <br />Dense, grayish brown, fine to coarse gravelly, poorly graded <br />S-7 <br />33 20-22 <br />SP <br />SAND, wet. Rough drilling from 15' to 18'. <br />No recovery. <br />® <br />S-8 <br />50/6" <br />Exploration terminated at 18.5-feet below ground surface <br />(BGS) due to auger refusal. Groundwater was encountered at <br />10' BGS. Borehole abandoned with 3/8" bentonite chips. <br />A bulk sample of drill cuttings was taken while drilling from <br />approximately 0'-5' BGS and combined with a bulk sample <br />from BH-1 for particle -size determination, organic content, <br />and CBR testing. <br />NOTE: This log of subsurface conditions applies only at the specified location and on the date indicated <br />and therefore may not necessarily be indicative of other times and/or locations. <br />Standard Penetration Test <br />(140 lb. weight, 30" drop) <br />♦ Blows per foot <br />D 10 <br />20 <br />30 <br />40 <br />50 <br />♦: <br />0 20 40 60 80 100 <br />Water Content (%) <br />Plastic Limit ' 0 Liquid Limit <br />Natural Water Content <br />z <br />O <br />Lu <br />w <br />Kittitas County Transfer Station BORING: <br />� BH-6 <br />Geotechnical Investigation <br />Ellensburg, Washington PAGE: 1 of 1 <br />U I <br />GEOSCIENCES INC. PROJECT NO.: 2022-188 FIGURE: A-7 <br />BORING-DSM 2022-188.GPJ 5111123 <br />