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DRILLING COMPANY: Holt Services, Inc. DATE STARTED: 3/1/2023 <br />DRILLING METHOD: Hollow Stem Auger, Mobile Drill B57 Track Rig. DATE COMPLETED: 3/1/2023 <br />SAMPLING METHOD: SPT w/ Autohammer LOGGED BY: V. Oskierko <br />LOCATION: See Figure 2. <br />E <br />1 10 <br />1 15 <br />1 20 <br />1 25 <br />of <br />w <br />U <br />W <br />m <br />Z — <br />Z <br />� <br />w <br />rr m <br />z <br />0. <br />CL <br />3 <br />DESCRIPTION 0)(n <br />0 <br />d fl <br />Q <br />0 <br />0 <br />OL <br />Medium stiff, dark brown, organic SILT, with roots, moist. <br />= <br />(TOPSOIL) <br />CL <br />Medium stiff, grayish brown, very sandy, lean CLAY, moist. <br />(FINE-GRAINED ALLUVIUM) <br />Push shelby tube. Refusal after pushing 15". Recovered 12" <br />T <br />in tube. <br />1 <br />Becomes dark brown. <br />SP <br />Dry Density- 90.7 pcf @ 21.1 % MC <br />Organic Content= 3.8% <br />GW <br />Material at the bottom of tube appears to be a poorly graded 1 <br />• <br />GM <br />� SAND, moist. ) <br />• <br />Dense, gray, slightly silty, sandy, well graded GRAVEL, moist. <br />• <br />Gravel broken by sampler. <br />w <br />(COARSE -GRAINED ALLUVIUM) <br />Rough drilling from 7.6-10' BGS. <br />Becomes very dense. <br />Very rough drilling from 10'-12.5' BGS. <br />GP <br />Very dense, grayish brown, slightly silty, sandy, poorly graded <br />° <br />GM <br />GRAVEL, wet. <br />C? <br />---------------------- <br />Very dense, grayish brown, gravelly, poorly graded SAND, <br />SP <br />wet. <br />Exploration terminated at 16.5-feet below ground surface <br />(BGS). Groundwater was encountered at 9' BGS. Borehole <br />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-5 for particle -size determination, organic content, <br />and CBR testing. <br />S-1 <br />2-4-3 <br />S-2 <br />2-2-4 <br />S-3 <br />DD <br />AL <br />%F <br />S-4 <br />5-19-16 <br />GS <br />Q <br />S-5 <br />18-30-42 <br />S-6 <br />16-32-40 <br />S-7 <br />12-20-32 <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 />Z <br />A Blows per foot O <br />J <br />10 20 30 40 50 w - <br />> <br />0 20 40 60 80 100 <br />Water Content (%) <br />Plastic Limit i —0 Liquid Limit <br />Natural Water Content <br />Kittitas County Transfer Station BORING: <br />BH_8 <br />Geotechnical Investigation <br />Ellensburg, Washington PAGE: 1 of 1 <br />GEOSCIENCES INC. PROJECT NO.: 2022-1 HS FIGURE: A"9 <br />BORING-DSM 2022-188.GPJ 5/12123 <br />