2507 HOWARD AVE 2016-01-01 MF Import

Gcotechnical Gnginccrine R�port i lous'ing I lopc Dccember 5,200�1 RMI Pile No. 2170d Page 8 rock spalls o; imported sand and �sravel in Iraffic and roadway areas. Ne can procide recommendations for alternutive consvuction methods at ihe time of constn�ction. if necessary. '(cmporrry and Pcrmanent 5lopcs 'Cemporary cu[ slope stability is a function o(m:in}' tactor;. such as the t:pe and consistency of soils, depth of the cut, surchnrge loads adjacent to the excavation, Iength of[ime a cu[ remains open, and the prescnce of surface or ground wa[er. It is esceedingly difticnit under these variuble conditions to estimate � stable, [emporary, cubslopc geometry. Therefore, il should be the responsibiliry of die con[ractor [o maintuin safe slupe configuratians, since the contractor is continuously at the job site, able to obs � .e the namre and condition of the cut slopes,and able to n:onitor the subsurface materials and ground water conditions encountered. For planning purposes, we recommend that temporary cuts in die topsoil, till, adv�nce outwash, and near- surface soils be no greater thnn 2 f-lorizontal ro 1 Vertical (2H: l V). Where ground water seepage is encatmtered, (latter inclinations will be necessary. This information is provided solely for thc bencfit of the owner and other design consultants and sl�oidd not be construcd to imply that RMI Associ»tes, Ltd. ussumes responsibilit} for the job sile sxfety. The on-sile contrac[ur �s the en[ity solely respunsible for job sitc s:ifet}. We recommend that cut ;lopes he protec[ed from erosion. bleasures taken may include covering cut slopcs with plastic sheeting and divertin�surface runoff awny from the top of cut slopes. Wc do not recummend vertical slopes for cuts deeper than 4 Cect, if worker access is necess.uy. We recommend that cut slope heights and inclinations conform to WISHA/OSHA standards. Pinal slope inclinations for structural fill and the stable, native soils shoald be no steeper than 2}I: IV. We are available to consult to you on specific pennanent er temporary cuts during the constructiun process. LighNy compacted fills or common fills should be no steeper than 3H: I V. Common fills are defined as fill material�eith or witltout some organics that are"trackrolled" into place. They would not meet the wmpaction specification of structural filL Final slopes should be planted with vegetation and cuvered �cith straw or jute nettine. The vegelation should be maintnined until it is establishcd. RMI ASSOC/ATES, LTD.