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ASPHALT Asphalt Specialties Co., Inc.
<br /> Project: La Salle Property
<br /> SPECIALTIES CO. Log of Boring: TH-9
<br /> 10100 Dallas Street Date: 6/8/2020 Boring Lat./Long.: 40.354821/-104.72902
<br /> Henderson,CO 80640 Drilling Company: Dakota Drilling Boring Ground Elevation: 4,665 ft amsi
<br /> Phone 303-289-8555 Drilling Method: Hollow Stem Auger(HSA) Boring Total Depth: 36 ft bgs
<br /> a GRAPHIC DEPTH TO
<br /> w' LOG LITHOLOGIC DESCRIPTION SAMPLES COLLECTED WATER w E
<br /> O- 0 r
<br /> 0 Ground Surface 4,665
<br /> 1 - Overburden(Topsoil) 4,664=
<br /> 2 4,663-
<br /> 3 4,662-
<br /> 4_ T 4,661 _
<br /> - _;Sand w/gravel,brown,fine to medium grained sand,moist,no odor 46e0=
<br /> ?=Gravelly sand,orangish-brown,coarse grained sand[#4 minus]with
<br /> : :some medium to fine grain sizes(sand size coarsening with depth),wet,
<br /> 7_- >. : :: - no odor 4,658_
<br /> 8_-:•:::: '::: 4,657
<br /> g= 4,656_
<br /> 10 4,855
<br /> 11 4,654_
<br /> 12 4,653
<br /> 13 4,652
<br /> 14 4,651
<br /> 15 4,650-
<br /> 16 4,649
<br /> 17 4,648
<br /> 18 -18 to 24 ft bgs=Slight increase in%fine to medium grained sand 4,647
<br /> 19 4,646
<br /> 20_,, ,,,.,,,:- Composite Sample Collected From 4,845=
<br /> Material Between 4 to 36 ft bgs a,saa
<br /> z, -
<br /> 22 4,643
<br /> 23 4,642
<br /> 24_ 4,641
<br /> Gravelly sand,orangish-brown,coarse grained sand[1/4-inch minus]with
<br /> - ....::..:.:::some medium to fine grain sizes,wet,no odor 4,640
<br /> 26 4,639_
<br /> 27 4,638=
<br /> 28 4,637
<br /> 4,636
<br /> 30- 4,635
<br /> 31 4,634
<br /> 32 4,633
<br /> 33 4,632_
<br /> 34_-[t [':. 4,631 -
<br /> 4,630-
<br /> 36 4,629=
<br /> _IIIllllllllllllllllllll Top of shale encountered at approx.36 feet bgs=Boring TH-9 Total Depth =
<br /> 37- 4,628
<br /> 38= 4,627_
<br /> 39= 4,626=
<br /> 40 4,625-
<br /> 41 4,624_
<br /> 42 4,623=
<br /> 43= 4,622=
<br /> 44= 4,621 _
<br /> 45 4,620
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