Financial- Geotechnical Resources Inc.

Home Browse Search

JUN-26-97 15=52 FROM=Geotechnical Resources ID:S03B44B034 Caeo~nnical Resources Zncor~oxated ~-~' Consultinfi Engi~cers, Geolagists, and F.z~vironmental Scientists Ju3ne I2, 1997 ~1rlazion Caunty ~Qd ~l~l S~ ~'y ~`~1 ~" OOf s~~,, aa~ ~r~oi . Att~o,~: na.~ri~d ~Tartw~g r~c~vax~o ~- ~~ SIJ~'EG~': SCQ~'E UF W4YtK AND ~'ITi~~T ~R ~ESIG~i OF A CUNST~U~1TOi~' A~WAZ'~RTNG SY5'.E~.M, F~tdP~STri Ct~T~tT'HOUSL SQUAR~ IyEV~Y.OPN~El~I`T, SAL~M, UR~'~GQN At yaur reques~ Geo~ec~nical R~esourc~s, ~c• (C'~RT) has ~rePared this soope of work and budgef for the de,sig~ of a canstnxc~it~ dewa~erun~ syste~n f~ar the proposed CourChause Square de~re.~opm~rn in Satean, bregan. The purpose ofthe dewra~tearing system is to max~age gr~und~cxrat~r Ievels durin,g co~tstxt~c~an af tlxe ~Sroposed developm~rt. bc~r acope of wark imcl~des the review of ex~stir-g ~fo~xnatian, eanst~uction of a test well, co~anpletian a~a pur~ test, descg~ of a oo~tzuctio~ dewateri~ sys~ezn, and prepara~pion of a repo~t. The ~ort wit~ su~runa~raze our ~dings and. pres~r,t our recommendatiom ~ar the dewatering ~~- PROZECT DESCX~YP'iZUN We understar~d th~ piroposed Courtlwuse Sc~uare devel+~pment in Sa1em wi~ accupy the er~e city blocl~ bo~~d by Cherneic~#a Stireet ~TE an the narsh, Court Street 1~IE on the sQUth, I~igh Sueet NE oac tlle we~t, and Church Strect NE on the tast. The block is cuirentty developed v+rith eadsGiz~g bw'Sdiunngs and assaciated par~Cing areas. Preli~ainary bui~ding design is for ~. four- or frve~-story smxc~ure with two ~s o~under~~und parking. We undersk.a.ud the flaor of the ~awer lev~el w~I be abotzt 20 ft below ~ade. Ozu- zeview af inforrn~tion praviidExl by yau indicaxes growndwater levets ben~eath the site raxiged from 10 ta I S$ be~ow the ground sw~£ace in ~ebiuaiy af this yea~ We arnici~ that grau.ndwaLer pnmpiz~g w~t be requiz~ad to maiantain the ~oundwater Iewel below ai. deptk of about Zl ft dw~i~g consauction. ~'OTTN~7Ai. F~IV7YtC?N~ENTAZ CONC~YtNS 'V~e tmd.~d a gasoliz~e seaviice station was pr~v~~usly tocated an. the soertheast partian af the site, aad that Ir~g gaso~ine as~d dieset unde~ground st~raeae tanks (CJS'~'s} associated wixh the st~ian ha~ve cont~zxuulated so~ and g~oundwater on the sit~_ Some ~omzation reg~ardung the curre~t envirormr~entai stait~s o£the site hss bed~ provided to us.. 'We acIawwledge that soi~ andlor g~raaundwater cant.aminaiioa could i~e enc~ountered ciurioag eoristruc~ion of the test well and purr,~ test d~~ i.n, the Scape of R~ork sec~ian oft~iis lette~ How~ver, it should be notod that this scope ofwoz~c does not inc~ude any pro~isions to ~ge ox~ dispose of carnazninated sos~ aa~dlor grcx~ndwater. 972i SW fizavcrton-Hill~daile iiwy Suitc 140 F;EAvertnn, Urt~on 9,"'p05-3_'31rM1 1'hone (503) b41.-3478 i~AX (.`+Q3) (r1~1-E;d34 c-mail ,~+riG~lh:lepnri.cum