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. ^ 1 <br /> �� <br /> CASCADE GEOTECHNICAL INC. <br /> August 6, 1992 Job No. 9207-0SG <br /> , � <br /> hours and during extended periods of inactivity. A silt fence or hay bales shcu►d be placed <br /> � <br /> along the downhill side of the excavation. All temporary erosion measures should conform to <br /> � the Ciry and/or Counry requirements. '° <br /> We �xommend that temporary cuts into the native soils be slopad back to 2(H):1(V)or flatter, <br /> _ or should be support:� with shoring. We recommend that we be engaged to observe these cuts <br /> to pmvide on-site recommendations. <br /> Fot�ndatfon Desi¢n Paramete►s <br /> ± The native, me�ium dense silry sand found below the uncontrolled fill is suitable for supporting <br /> — shallow, spread footings designed to 2,000 psf, if the soil is firm, undisturbed, and free of <br /> — organic material. We recommend that we be engaged to review all finai plans and to be or� site <br /> i �` �-.. I -- during the excavation. We also recommend that we be engaged to view the fr�oting excavations <br />, , <br /> — prior to placing the forms to confirm bearing soil and subgrade conditions. <br /> � � �- The foopngs should be placed at least eighteen (18) inches bzlow the outside finishe.a grade for <br />, frost protection. The minimum footing widths should conform to the local building ccdes. <br /> ; <br /> f �,� ' � � Backfilled Walls <br />� '� '� j <br />� y�'s " ' � All basementlretaining walls should be backfilled with a "free draining" granulaz material which <br /> .�� - . i <br /> , y;,'`, �. <br /> I, � conforms to the following gradation: <br /> I � — <br /> � <br /> n _; , <br /> � Y .�; <br /> f <br /> , �;� <br /> _, '�i <br /> , 6 <br /> � <br /> ��� <br /> , ' s <br /> � <br /> � 1 <br />,. <br />'�. , _ -- —� <br />