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DRILLING COMPANY: Holt Services, Inc. DATE STARTED: 2/28/2023 <br />DRILLING METHOD: Hollow Stem Auger, Mobile Drill B57 Track Rig. DATE COMPLETED: 2/28/2023 <br />SAMPLING METHOD: SPT w/ Autohammer LOGGED BY: V. Oskierko <br />LOCATION: See Figure 2. <br />5 <br />1 10 <br />1 15 <br />1 20 <br />rf <br />w <br />d <br /><� <br />U <br />W <br />} <br />4 <br />t— <br />Z <br />U <br />~ <br />w co <br />tr <br />Z <br />0 <br />Lu <br />(D <br />DESCRIPTION U) <br />(n <br />a- a <br />O <br />n <br />ML <br />Medium stiff, dark brown, SILT, with roots, moist. <br />(TOPSOIL) <br />OL <br />Medium stiff, dark brown, gravelly, organic SILT, moist. <br />(FINE-GRAINED ALLUVIUM) <br />GP <br />Last 6-inches of sample driven on gravel. Rough drilling at <br />GM <br />3.5 to 5' <br />0 <br />Poor recovery. Only recovered broken rock. Rough drilling to <br />0 <br />7.5' <br />0 <br />(COARSE -GRAINED ALLUVIUM) <br />0 <br />o <br />Dense, brown, slightly silty, sandy, poorly graded GRAVEL, <br />0 <br />wet. <br />O <br />GW <br />Very dense, grayish brown, slightly silty, very sandy, well <br />• <br />GM <br />graded GRAVEL, wet. <br />• <br />• <br />No Recovery. <br />• <br />• <br />Very dense, grayish brown, gravelly, poorly graded SAND, <br />SP <br />wet. <br />Becomes very gravelly. <br />Exploration terminated at 20.75-feet below ground surface <br />(BGS). Groundwater was encountered at 7.5 BGS. Borehole <br />abandoned with 3/8" bentonite chips. <br />25 <br />S-1 2-4-3 <br />S-2 1-2-14 <br />S-3 2-40-50/3" <br />Q <br />S-4 5-21-16 <br />S-5 7-25-29 GS <br />S-6 50/6" <br />S-7 50/5" <br />S-8 40-50/3" <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 O <br />H <br />ui <br />10 20 30 40 50 w w <br />w <br />♦: <br />0 20 40 60 80 100 <br />Water Content (%) <br />Plastic Limit i — 0 Liquid Limit <br />Natural Water Content <br />BORING: <br />M <br />Kittitas County Transfer Station BH-7 <br />U I <br />Geotechnical Investigation <br />Ellensburg, Washington PAGE: 1 of , <br />GEOSCIENCES INC. PROJECT NO.: 2022-188 FIGURE: A-8 <br />BORING-DSM 2022-188.GPJ 5/11123 <br />