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• LOG OF EXPLORATION PIT NO. IT-1 <br /> " This log is part of the report prepared by Associated Earth Sciences,Inc.(AESI)for the named project and should be <br /> read together with that report for complete interpretation.This summary applies only to the location of this trench at the <br /> aa) time of excavation.Subsurface conditions may change at this location with the passage of time.The data presented are <br /> o a simplfication of actual conditions encountered. <br /> DESCRIPTION <br /> Grass/Topsoil <br /> j\Loose, slightly moist, dark brown, organic rich, silty,fine to medium SAND, trace gravel (SM). <br /> 1 Vashon Advance Outwash <br /> Medium dense, slightly moist, tan to reddish brown,fine to medium SAND, some gravel, trace to <br /> 2 — <br /> some silt, cobbles(<6 inches in diameter)present(SP). <br /> Stratified, fine silty layers present. <br /> 3 — Upper 1.5 feet have some silt to silty. <br /> 4 — Grades to gray. <br /> Thin, silty, layer at 4 feet has light oxidation above it. <br /> 5 — <br /> 6 — <br /> 7 Moist to very moist below 7 feet. <br /> 8 Silty layer(-1 inch thick)at 8 feet. <br /> 9 <br /> 10 — Sand grades to medium. <br /> 11 <br /> 12 — <br /> 13 - <br /> Bottom of exploration pit at depth 13 feet <br /> 14 — Infiltration test performed at 7 feet.Slow seepage from-1 foot at east edge of excavation at 11.5 feet. No.caving. <br /> 15 — <br /> 16 — <br /> 17 — <br /> 18 — <br /> 19 — <br /> c 20 <br /> s <br /> N <br /> z Stormwater Infiltration Assessment <br /> Everett, WA <br /> 0. <br /> ir01a s s o c a t e d <br /> o Logged by: ADY /� Project No. 170671H001 <br /> earth sciences <br /> a Approved by: incorporated 12/13/17 <br /> o <br />