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HomeMy WebLinkAboutObservation of Excavation 04.13.2021t(t tmfrmffi,;'*" frn Ëffbpfoyse tr¡rnod Corapsny 5L)20 Ccrrnty l¡"oa¡l 154 {ilenwaod Sirriugs, {lû 816ût phorre: (97{} } 945-7988 Íhr:{Çi'{}} 945 B:i5,i r:mail : k;i¡¡ienv,,ood(il)huntarrrslr.e*rn Isv_ry.È!¡_r-üêtLsê"gq{i ûffice l,ocaÎìons: l]en.",e¡ {l{Q}, Farher, Colorado Springs, Iìcrt Collins, Cleurryoocl Springs. ancl Srurnrii CounÍy, Coloradc Apnl l3,2t2l Aspen Land Investors LLC Attn: TeddyFanell 0015 Boomerang Road, St€.50218 Aspen" Colorado 81611 tlalreLlt4Ësr"$ss.agru Project No. 2û-7-331 Subject: Observation of Excavation, Proposed Residence, Lot E-i2, Aspen Equestrian Estates, 48 Equestrian Way, Garfield County, Colorado Gentlemen: As requested, a representative of Kumar & Associates, Inc. observed the excavation at the subject site on March 3l,2AZl to evaluate the soils exposed for foundation support. The findings of our observations and recommendations for the foundation design are presented in this report. 'We previously conducted a subsoil study for design of foundations at the site'and presørted our findings in a report dated June 22,202A, Project No. 20-7-331 . The proposed residence is similar to that described in our previous report and will be supported by shallow spread footings sized for an allowable bearing pressure of 1,500 psf with slab-on- grade floors. At the time of our visit to the site, the foundation excavation had been cut in I level f¡om 2 to 3 feet below the adjacent ground surface. The soils exposed in the bottom of the excavation consisted of medium stiff to stiff sandy silty clay. The excavation bottom had loose soils frcm the excavating equipment. No free water was encountered in the excavation and the soils were moist to very moist. The soil conditians exposed in the excavation are consistent with those previously encountered on the site and suitable for support of spread fcotings designed for the recommended allowable bearing pressure of 1,500 psf. Loose disturbed soiis in the footing areas should be compacted or removed to expose the undisturbed natural clay soils. Other recommendations presented in our previous report which are applicable should also be observetl. The recommendations submitted in this letter are based on our observation of the soils exposed within the foundation excavation and the previous subsurface exploration at the site. Variations in the subsurface conditions trelow the excavation coutrd increase the risk of foundation movement. We should be advised of any variations encountered in the excavation conditions for possible changes to recommendations contained in this letter. Our seryices do not include deterrnining the presence, prevention or possibility of mold or other biological contaminants 6to1 Aspen Land Investors LLC Apr:.ll2,2A21 Yage2 (MOBC) developing in the future. If the client is concemed about MOBC, then aprofessional in this special field of practice should be consulted. If you have any questions or need further assistance, please call our office. Sincereþ, Kumar & Ass Steven L. SLP/kac Kumar & Associates, lnc, o Projeet N0.20-7-331