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y('iH <br />4 <br />5� <br />a�H <br />m <br />H � �-�+ <br />� H� <br />� M'b <br />y H <br />�'lO. <br />NC <br />��g <br />�Y � <br />�y�� N <br />g`� <br />N <br />nd� <br />��� <br />xHtn <br />H O �n <br />August 15, 1991 <br />Mr. Bob Norling <br />� <br />�� <br />G-0126 <br />Page 6 <br />e� <br />weathered till. The dense and granular nature of the subsoils and <br />,a the non-existence of qroundwater at the site practically eliminates <br />any possibility of liquefaction occurrinq on the site during strong <br />motion earthquakes. The dense and cemented nature of the soils <br />also minimizes the dynan._.c lateral soil pressure on the garage <br />walls. The design of the taalls for the static soil pressure <br />recommended below, in our opinion, should be adequate. <br />t <br />Y <br />eite Prenaration <br />Site preparation should include clearing and grubbinq of vegetation <br />within the construct � limits. The fill material beneath the <br />footings and pavement that contains wood, roots and other debris <br />shouid be over-excavated and replaced with compacted fill. <br />The existing hillside outside the construction limits should be <br />left undisturbed. Vegetation removed beyond the building limits <br />should be re-vegetated as soon �s practical. <br />Excavation 8looes <br />, Surface runoff should not be allowed to flow uncontrolled over the <br />top of slopes into the excavated area. A shallow ditch on the <br />' slope to intercept and drain surface runoff away from the excavated <br />'" area is recommended. Exposed cut slopes should be covered with <br />plastic sheets to minimize erosion and sloughing caused by <br />„� rainfall. <br />�� The 4 feet of ad3itional excavation into the hillside should be <br />made with vertical cut in segments no more than 6 to 8 lineal feet <br />at a time, and should be sequenced and coordinated with the <br />ie <br />ie <br />c3eo Consultants Inc. <br />x <br />