2205 BROADWAY 2016-01-01 MF Import

LSI - ADAPT e � The subsurface assessmrnt wns performed concurrenQy with Kane Environmental, Inc.'s subsurface environmental assessment of the property. The specific location and depth of the explorahons pedortned were selected in reladon to the proposed site features, under the consdainta of site access, along with specific locations chosen by Kane ' Environmental, Inc. for th�ir subsurface environmental essessmenL The location of the borings and other features shown on Figuic 2 were obtained by hand taping from existing site features. As such, the exploration locations shown on pigure 2 sFould be considered accurate to ttie degree implied by ihe measuring methods used. S�bsuriace Ezploration Melhods Soil borings 5B-1 through SB-6 were advanced on July i l, 2002 using a truck-mounted hollow-stem auger drill rig. The drill rig was operated by Cascade Drilling, Inc., of Woodinville, Washington, an independcnt company,working under subcontract to Kane Gnvironmental, Inc. An experienced geologist from our fimi continuously observed thc borings, obtained representative soil samples, and logged the subsurface conditions. After each boring was completed, the borehole was backfilled with a mixmro of soil cuttings and bentonite chips. I During drilling, soil samples were gencrally obtained on 2%: to 5-foot depth intervals using the Standazd Penetration Test (SPT) procedure(ASTM: D 1586). This test and sampling method consists of driving a I standard 2-inch ouuide diameter (OD) split-barrel sempler a distance of 18 inches into the soil with a 140-pound hammer, free-falling a dist�nce of 30 inches. The number of blows required to drive the sampler through each of the three, 6-ineh intervals is noted. The total number of blows struck duting the ' final 12 inches of penetration is considered the Standard Penetration Resistance, or"blow count". If 50 or more blows are shuck within one 6-inch intc;rval, the driving is ceased and the blow count is recorded as 50 blows for the actual number of inches of pcnetration. The resulting Standazd Penetration Resistance values provide a measure of the relative density of granular soils or the relative consistency of cohesive ' soils. Representative samples were collected from each distinctive soil unit encountered for possible later laboratory testing. Each borehole was immediately backfilled after completion. , Th� soil boring logs appended to this report dcscribe the various types of soils encountered in the explorations, based primanly on visual intetpretations made in the field. The logs also indicate the approximate depth of the contacts behveen different soil types, although these contacts may be gradational or undulating. Where a change in soil type occurred betwcen sampling intervals, we inferred the depth of contact. In addition, thc logs indicate thc depth of any groundwater observed in the borings, I the Standard Pcnetration Resistance at each sample location, and any laboratory tcsts perfortned on thc soil samples. LSI-ADAPTJobNo.WA02�8721 . P86P�� August 6,2002 I I