Laserfiche WebLink
liccrcu Comnn;nity Collc�c <br /> \bcctnber 1�1. 2006 <br /> P:�ec 3 <br /> [n-placc rwi;turc and dcnsity tcst resulis indicatc tha� thc Oour slab subgradc suuctural fill �vas <br /> cumpacteJ w at Ic�st 9� perceni of the �1DD per AS":�l D 1557. 13ased on nur obscrvalions and <br /> evaluations, rt is our upiniun Ih�l the on•grade fluor slab suUgradc suiis and the cap�llary brcak materials <br /> �ccrc prcpu:cd in gcncral accordancc with Ihc projcct plans, spccifications and our rcconvncndati�ans. <br /> PLACEMENT AND COMPACTION OF UTILITY TRENCH BACKFILL <br /> We obseracd placcmcnl and compaction o( backfill for utiGty trcnches mcluding sc�vcr, watcr, stonn <br /> drain, gas, and cicctrical trcnchcs. Our o6scrvation; were madc on an intcrniiuuri l�asis bchrccn Junc G, <br /> ?007 anA Scptcmbcr I5, 2008. "I�hc utility lrcnch backfill was evaluatcd by complcting in-placc dcnsity <br /> tcsts and by probing�vith a Y:-inch-diametcr stecl probc rod. Strucmral fill pinced im m�st utiliry irenches <br /> w�s gcnerally cmnpacicd to at leasl 95 percent uf thc MDD per ASTM D 1557 in the upper t��'o fcet and <br /> to at Icast 90 percent of the NiDD bclow the top hvo fect, cxccpt under ihe fooling, pavement, and <br /> hardscapc arcas whcrc thc backfill �vus compactcd to at lcast 95 perccnt oCthc MDD. On sitc silt was <br /> uscd as structural fill for utilily trcnch backfill in a 1rnJscapc arca cast of lhc building on Octobcr 3 and <br /> Octobcr 9, 2007 (ficld report Nos. 22 and 23). 13asca on thc tcst results and our nhscrvations, bnckfill <br /> consisting of onsitc silt pL•:ced in this landscapc area was compacted to bctwccn 84 and 95 perccnt of thc <br /> MDD. Bascd on our obscrvations and cvaluations, it is our opinion lhal thc utility trcnch backlill placed <br /> and cvaluatcd dunng our site visits was compactcd in gcncral accordancc with thc projcct plans and <br /> spccifications,and our rccommcndations,cxccpt in the landscapc arca notcd abovc. <br /> Based on our obscrvations, it is our apinion that the work discussed hercin was wmpleted in substantial <br /> compliancc wilh lhc projcct pl:ms, spccificalions,and our rccommcndations, <br /> \Vc trust this Icttcr mccts your currcnt necds. Plcasc call if yuu ha�c any qucstion rcg;�rding th�s lcttcr. <br /> Kcspcctfully submittcd, �, �yF <br /> Gcolin�;inccrs, Inc. O��'�p Wnsy��'y�� <br /> a ��' �' <br /> � � .� '�'`--- <br /> ;-�:>/1..���' � ��u <br /> F a <br /> Q 32807 Q W <br /> '`As`��rs��`�'�� <br /> Rohcrt C.n4ctcalfc,PH, I.I:G S��NAL�� <br /> Associatc <br /> Hcnt:�� <br /> I:V I�.R:\\I'.�515tlJG005101`J'ina1�58JG00501 SLJuc <br /> 'I'wo copics submitted <br /> Disdaimc�: Any tlecimnic lortn, fncsimile or hard eopY of IM1c nnginnl document (email, Ie�t, mhle, nnd/or figure), i(proviJeJ, ond any <br /> mlachmcnts are unly e mpy o(Ihc ooginnl Jrnumcm, ilm onginal dotuntci I it sinrcd 6y(icnGnginccrs, Inc and will un'c as Ihe alGcial <br /> JucmncN ofrecunl. <br /> ('upyiie.him 200R hy Gcuiingincers,Inc All�ighi�rtuivcd. <br /> l�dc.Ko. `Y�Gqp�.(/f �� GEOENGINEEPS� �/�� <br />