11830 19TH AVE SE 2016-01-01 MF Import

Seahorse Restaurant W-5583 18 March 1988 Page 3 ` � changes in the nature and design of this project, the conclusiuns and I , . recommendations cantained in this report should be reviewed and modified, as necessary, to reflect those changes. Subsurface Exploration The subsurface exploration program for this project consisted of advancing twelve test pits at the approximate locations shown on the Site and Exploration Plan, Figure 1. Test pit locations were dictated primarily by proposed building • locations, existing trees and structures. Test pits were advanced with a rubber- tired Case Backhoe under subcontract to our firm. Test pits ranged in depth from 4 to 7 feet. The test pit excavations were continuously observed and logged in the field by a geotechnical engineer from our firm. The test pit locations shown on the Site and Exploration Plan, Figure 1, were obtained by hand-taping and pacing from existing fences, structures and features indicated on the site plan that was provided us prior to our field investigation. The locations shown should be considered accurate to the degree implied by the method used. The exploration logs enclosed with this letter are based on interpretations made in the field. The logs indicate the various of types of soils and materials encountered in the test pits. The relative densities of the soils indicated on the logs are interpretive descriptions based on the excavation characteristics, evaluation of the excavated soils and the stability of the trench side walls. The logs also indicate the depth where the strata or the characteristics of the strata changed, although changes �ndicated may be gradual . The natura and extent of the variations between test pits may not become evident until construction. If variations then appear evident, it may be necessary to re-evaluate the I recorrmendatians of this report. Subsurface Canditions � The near-siirface geolegy of the project vicinity is characterized by exposures of overconsolidated silty sands with variable amounts of gravel from past glacial �