5902 EVERGREEN WAY HOUSING HOPE 2018-01-01 MF Import

' Subsur,ract Ezp7orarior., Geologic N�ard, md Nvu.ring 'iopr Phate!! Prcliminary Gmtechnica!Enginrtring Repon � E}trttt. Rathingtun Projccr and Sire Grndirio�u � � t ' prrliminary site plan by The pykeman Architects. The project site is a vacant lot located batwr.en an existing day care f«�ciliry wiih sveet address 5910 Evergreen VVay and tesidenual ? d��•ellings (owned by Housing Hopa) with s4eet addresses 5817, 5823, and 5829 Flemming � ( Svicet in E�•ere[t, 1i'a�hington. 71.e e�.isung day care building and resiciential dwellings will � remain. The Housing Hopc: drve!upmer_t offices ue located north of the site and a strip mall � and residential dwellings are locateci sos�th of the property. Pidgeon Creek is located north of a � the property and separates the day care lot from the Housing Hope development offices 4 P�;,perty. A required 50-foot �vatercourse buffer has been established along the southeast flank , I of Pidgeon Creek. As currendy planned, the proposed Phase II development should not i encroach on this buffer. ; 'I�e property is veget�ted primarily with blackberry and other small shrubs, and scattered � igroups oC large cedar and maple trees. Slopes range from nearly flat in the northeast corne� of [he lot to approximately 50 percent near die southwest comer of the property. Overall vertical � relief across the site is on the order of 20 feet with higher elevations near the south properry line and che lowest elevations along the north property line. i 1Ye understand thac the proposed project would ir,clude construction of three ne�N residential � � buildings withiu tLe vaca�t, eastern ponion of the lot. Building locations, finished floor elevations, and construccion de[ails ha�'e not been finalized at this time. However, we Ianeicipace lieht to moderate foundation loads commensurate with wood or me[al-frame consuu�tion. Current plans also indude infiltration of storm water, if possible. I3.0 SUI3SCRF:ICE E\PLOR.�\TION I �lssociated Earth Sciences, Inc. (AESI) performed a subsurface exploration of the site on ]anuary 25, 2002. Our field smdy included txcavating seven exploration pi[s to gain 1 subsurface information about the si[e. The various rypes of soils, as well as the depths where , characteristics of the soils changed, are indicated on the exploration logs presented in the Appendix. The depths indicated on [he logs whe;e condi[ioas chau�ed represent gradational ' variations between soil types in the field. The loc.ations of our field exploratfons were � determined by approximate measurement from che known site features presenred on the aforementioned topograp6ic survey prepazed by Western Surveyors, Inc. The purpose of the I exploracion program was to establish general site, soil, a�id ground water conditioas. Additional explorations may be necessary within the specific azeas targeted for infiltration once I. site development details and definite building locations and elevations have been established. The cor.clusio�s and recommendations presented in this report are based, in part, on the � cxploration pits completed for this study. The number, locations, and depths of the explorations were completed within site constraints. Because of the nature of exploratory work below ground, exuapolation of subsurface conditions between field explorations is necessary. � February !l, 2002 AJSOClATFJ� F.4R1N SC(ENCE$ /NC. scrr:��KEo��v�:•�,rn,i:mi;.v�Kn wr-w:r. �� Page 2 f 73D