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Septerober30,2009 <br />• Aroject No: T-6366 <br />,. . <br />, <br />3.0 SITI's CONDITIONS ` ` - ' ' ' �' <br />3.1 Surfacc , � <br />The projcet site curtently se�ves as pa��ed j�arking b ithin the Gvcretl Mall retail lacility located south of the <br />interscction of FINY 99/Soulh Broad�vay and Ci�eretc Mall Way in Everett, Washington, The approximule sile . <br />location is shown on Ihc atlaclied Vicinity,Map, Pigu�c 1. ' <br />Specific�lly, tfic ncw retail buildi�ig will be simateZ ivest of the norlli}vest corner of the existing Macy's storc. <br />Access to tlie sitc is gained Trom South Broadway�.nd EvBretl Mall Way. Tlic site is bordered to the iiorth and <br />wcst Uy Paved parRing nnd Soutli Uroadway, to Ihe easl ad south by the Macy's storc. <br />Tlic site is relatively t]aL Overall rclief is apprt�xima�cly lhree fect front lhe nalha�es! comer of t6e project <br />area to tlte soulhca3t corncr. As wc understand and froni revic�v nf historical aerial pliotographs tUe nonhem <br />portion of thc sile wns previously occupicd Uy a gasoline/seivice stnlion. � <br />:9 � Soils. <br />Underlying a'Sow• to six inch asphall concrete pavcmcn4seclion, soil condi�ion we observed at the test borings <br />cnnsisted of nntivc'deiise lo vcry den�c silty saud witB Sravcl (giacial tillj and mcdium dense ro dcnse granular <br />fill. Ai.tcsl Uoring B-] located ulong Ihe southwest UuiliJing linc we obscrved dense to ve�y dcnsc,glacial lill <br />dcposils for its entirc 1 G f'ooi dcpth. Tes( boring I3-2 loca�ed nearihe squU�cast building comcr revealcd nbout <br />two feel of grnnular fill overlying dense glncial till followed by dense sand and grm�cl before terminating in <br />hard silt. Pill matcrial composed of �vcll compactcd sand and gravel was observc lo a dep[h of 14:5 feet al tesl <br />6oring B-3 localcd near �l�c norih building comer. This fll is likely Uacklill placed to restore grades following <br />removnl of theservice stations miderground slorage tanks (US"1"s): ,Very dense native glaci�l till was observed <br />below thc fill to the Uoring tercninntion deptli. <br />�fore dctailcd descriptions of thc subsurface conditions we obseived are summarizcd on dic 7'es1 13oring Logs <br />in Nppr,r.dix A. Tl�c approximale locatinns of tl�c boriiigs are shown on Pigure 2. � <br />Thc Geologic i14n�� of tbe Eva�err 7.5 A�im�tr Qi;ndrnngle, Shnhomisli Cmuuy, li�asl�ingln�i,'by James P. Minard <br />(1985), maps Il�e soils nt Q�e site as 7'ill (Qvt). 'Phe naiive sitc soils we observed al the site are consistcnt ailU <br />Ilie mappcd gcology. , ' <br />3.3 Groimdw�tcr _ <br />We observc groundwa�cr during drilling at tcst borings B-2 and B•3 at dcpths of approximately 13 icet below <br />existing surfacc grades. Thc groundrvaicr �vns found perclied a6ovc thc low perneability sih and glacial till. <br />The grom�dirater oUsen�ed is likel�t'isolaled and perched �vithin t1;c _<'and and gravel fill use to vackfill the <br />prcvious US 1' cavity andaia indicalive of a.localized or regional ground�vater IeveL <br />Plucluations in groundwater seepagc levels n�ill occur nnd shauld be expected on a seasonal and unnual basis. <br />Typicnlly, eround�vater seepage rwches maxiroum Icveisduring and shortly f'ollowing the wet �vinrer mont6s. <br />- 1'ageNo.`2. / <br />