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lhr niinrJ pit ,irra. ��rrr initi;dlc p:utialh IiIIcJ ��ith undueumrmrJ till >oil durin� 1997 and pri��r �n <br /> Junc I��"S. liascd un Ji>ciu,inns ��ilh Itinkcr \1;urri;il'. pcnumirl :md uh.crca�iuns un .ire. ��c <br /> unJcrstand Ihat an uIJ cuncrctc ruhhlc lill c.�itits un Ihc c;itil siJe uf�hc sitc :md crtcnds casl off Ihr silc. <br /> fhe ap�,i�nimalc limit of ihc ruhhlc lill arca un dic +ilc is shu��n un Pieurc _'. 'I'hc Jepih�mJ ccicnt uf the <br /> cuncrctc ruhhlc lill arca is nul knu��n. hut �e� w�J��tiL'utJ �I nc�V hc up�o RO (cc� Jc�p. An �xilting I;irgr <br /> lill till tituckpilc, up tu ;ihuul NII fccl high. ��ati placcd +uuth u(thc sitc pnur lu 1997 :md l6c luc u(thc <br /> sturF,pilr c�IcnJcJ up lu I511 ficl nnlu Ihc suuthcasl patt uf Ihc �ilc. A titnekpilc uf organic lill csca�'alrJ <br /> tFom thc PunJ Scrvicc. ul Antrrir;i .ilc ��;is �•�I;iccJ alung �hc ��cst purtiun uf thc silc and in �hc limu'c <br /> �..ori;ucJ BuidcrarJ righi-of-��ay in ticpicmbcr I�)9X. <br /> Rinkrr m.;ucri;ils bcgan plarinp a minur ;mioum uf x�nictural iill cumpactcd iu nt Icatit 90 pcnent of thr <br /> tn:i�imum dr� Jcnsity 1�11)UL per ASll1 D 1557. iii a mincJ pit arca in Ihc�cc.t-ccntral arca in Junc ;md <br /> .luh 199'). rVihough (�cul'.nginccrs JiJ nut ohscnc tlic lilf whgradc cunJitinns. ��c anticipam Oia� �i�ntr <br /> of Ihc �ill �vns pincrJ o:cr nali�c pi� �luur. hul musl �cati likclp pl;icrJ u�rr undocunmtu�.d fill. Structural <br /> lill a;is placcJ �,�« r���;����.i> �i:��•«i ��„a��<<��»��u�d ru in �hc fuiurc Ati�uciaicJ Roulc�arJ alignmcnt <br /> nesi uf the site in (lctuhcr 199'). kmker V:uerials placed ;iJdilional slnictural �ill. contp:�eted W al least <br /> ')2 perccnl \1DD. un Iho ��'c+�orn ;md suutMeisi norlions ul die tiitc in Augu�� ;mJ Scptcmbcr '_UUU w <br /> hrinE ihc Iu� u�� lo cxltiiin¢ ErnJCi. A Iar�C cUl inlu lI1C C�Itiling dII GII stuckpilc ��as rcyuimd :dou� thc <br /> .uulh anJ suulhc;i�t puttions ul ihc lut in ortl,r lu achiccc cxitiling gradc. 'I hcrclixc, dic tioulh and <br /> .outh�;ist purtiam uf thc lu� h;:�c hcen cut m dic czisting gr.idcs in till cuils and cumparicd stnictural till <br /> has nut hccn pl;icrJ in thcsc arcaz. In aJdition, nu ti�nicltu':d till hati hccn placcd :dung �hc cas� and <br /> nin�hcast arcas ul ihc nilc. tiinec ticptcmhcr ZIIIIU �cc :uc a��:uc uf unl} ��co Jays 1�1uy 2'_ .mJ 30. 20(Il) <br /> �chcrc !2 tu IS inchcs ul' titruriw:il IiIL cump.icicJ lu u� Ic;ist 9? perccnt �1DD. ��as pland in thc <br /> noiilt�cosl pait uf Ihc silo. <br /> R;urd un um c.�prricncc in thc arca, our uh.creaiiuns d�uinp grading li�r thc Pood Scn ircti of Amcrica <br /> 1 Pti:11 huilJing tilr to Ihc u'cst. nnd suhswi:icc inliimuiliun �iunt horingti un thc PS,4 sitc. �cc :mticipa�c <br /> �h;d ihc lill un Lui d i, rumpo.cd prim;iril� uf >uils ul gl:icial �ill in urigin ihat �ca. Jcriecd Gom <br /> u�rrhurJcn sirippinE uperaliun.. \1'c und�a:+tanJ tha� Ihc unJcnumcnlcJ lill �ill �+'as gcncr,dly placcd <br /> ❑i�d ur s�ocFpil��J using srrapas :inJ il ��;is n�q rn�incrred, unifurnily rompacicd. ur muniiurcd Juring <br /> plarcmrnt. Occ;�siun;d zuucs ol wp.��d h;i�e h�cn rnroun�rrcd in thc ull I�II in uthrr lucatinm un Itinkcr <br /> V;iicri:d'x prupc�t�. <br /> 3.A SUBSURFACE CONDITIONS <br /> l hr lidl����mE suh.rctions Jr.rnbr Ihc grncr:d wh,url.�rc rundilium rncountcrcd at �hc tiite. <br /> I�.�pinroliun. cu'�.i.lin� u(hurinCti auJ Irsl pils �cerc perlimncJ atruss th� si�c. cxccpl a� thc nurih ¢nd u( <br /> IiwldinF 8 anJ in th. rrntr;;l :irca of BuilJing R. P.�plar;uiun luruiuns rcferenced belme are �hu�en in <br /> { icurc '_. ;ind sm;itn;ir� I���� ���� �i��.•.i,i„�;���„��, ;��,• ��,�i���i�,i ��, ,�rr��,a�� :�. <br /> 3.4.1 Subsurlace Soils <br /> hi crnrrnl. �hc suh.urf;irc .��il cumliu��m urm.. �hc .itr curoi,l nf lill lill. eonc;rl� ruhMc till and <br /> ,,�ft rl;ip Jr�.u:ils uccrlping n.ut�c aJ�an.cJ om��a.h s:md. Ihc cun.•rctc rnhMr fill 1('RPl is lur;utd un <br /> ihr cu� sidc ul Ihc sitc. ;u ditirutixJ in Ihr �idlu��ing serliun. <br /> Till FIII <br /> 1 ill till c�i,lti acru,ti Ihr .ila On Ihr soulhcrn poninn uf thc silc. thc thirkncsti uf Ihc till till is �ic�itcr <br /> nmm�d Ilic perimcicr uf Iht I1uilJin� A siir th:m �cithin thc ccntral ponion uf thc sitc. Juc lo a mounJ uf <br /> u,i�i�� snnd. 'll�c undurumonicd lill un Ih� suulh sidc uf�he si�c r:utg¢s li'um ahout 3U to 36 fcc� Jccp in <br /> . . ,�, .1 ���,i,�,�_..--_-____-.-- Ih�A� P G[oEwc�MEus�J <br /> � L <br />