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Kvaerner Metes <br />• Project No. 306900 <br />General Specification No. GC-01 <br />Site Work <br />• Excavation of hard, cemented or rocky soils regwring ripping by D9L, single <br />shank, dozer in low gear will be classified as Rippable Excavation. <br />Excavation shall not be made below grade shown on the drawings, except where <br />removal of non-swtable material necessitates over-excavation. Matenal removed <br />below grade shall be replaced with approved material thoroughly compacted as <br />specified in Section 5.2, or Section 5.3, as directed by the Engineer. <br />Spring or seepage water encountered shall be reported to the Engineer. If the <br />drawings do not indicate drainage facilities, provisions for the permanent <br />drainage of such water shall be made as directed by the Engineer. <br />The sequence of all excavation operations shall be such as to ensure the most <br />efficient utilization of excavated materials in embankments aria fills. <br />Side slopes of cuts in alluvial soils or in residual soils shall not be steeper than <br />two honzontal to one vertical. Side slopes of cuts in weathered rock shall <br />conform within limits shown on the drawings or shall not be steeper than one <br />honzontal to one vertical. <br />Excess excavated matenal, or materials not suited for use in embankments and <br />fills, shall be disposed of in spoil areas shown on the drawings or approved by <br />the Engineer. <br />5.Z General Embankment and Fills <br />Areas to be filled shall be cleared, grubbed and stepped to competent natural <br />soil. Prior to the placement of any fill, the subgrade shall be wetted as necessary <br />and compacted to the same requirements as the overlying fill. Where thickness <br />of fill is less than one foot, the surface shall be scarified and re-compacted. <br />Embankments and fills shall not be started until the area has been inspected and <br />approved by the Engineer. <br />All embankments and fills shall be keyed into the existing hillsides by cutting <br />honzontal benches before placing and compacting the fill materials. Side slopes <br />of fill shall not be steeper than two honzontal to one vertical, unless shown <br />otherwise on the drawings. <br />Embankment and fill matenal shall be obtained from excavation of natural soil <br />within the plant site or approved borrow sources. Embankment and fill matenal <br />shall be reasonably well graded from 6 in. to fines, with no material larger than 3 <br />in. in maximum dimension in the upper one foot. Fill material shall have a <br />maximum percentage of fines (minus #200 sieve) of 35 percent by weight, a <br />liquid limit of less than 35 and a plasticity index of less than 20. Frozen matenal <br />shall not be used. Matenal shall not be placed on frozen ground. <br />Unless otherwise indicated on drawings or directed by the Engineer, fill matenal <br />shall be placed in uniform lifts not exceeding 8 in. in loose thickness and shall be <br />nw ~.~ 5 r,.r oamw ~,. wM <br />