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When the material for an embaniQnent censists of lan7e size <br />rock, broken stone, or fragmented material that makes placing • <br />it in 12 inch layers ing~ossible, the eml~nlanent will be <br />constructed in uniform layers not exceeding in thic~a~ss the <br />approximate average size of the rock used, but the layers will <br />not exceed 36 inch. Rock will be distributed by blading or <br />dozing in a Wanner that will ensure pz~oper placement in the <br />pmbank[rent, so that wills, pockets arcs bridging will be <br />reduced to a minimum. 'Ihe final layer will meet the <br />rmt~irements of 4.03.2(3) (d) (iv) . <br />Each layer of the embankment will be ow~leted, leveled and <br />c~g~acted before the succeeding layer is placed. Successive <br />layers will be cm~acted evenly b~+ routing dozers, trucks and <br />scrapers over the entire width of the embankment. phis <br />procedure will be continued until no visible horizontal <br />movement of the etnbarilamnt material is apparent. flnbanlanent <br />layers will be conq~acted to a mini m~nn of 90 percent of <br />Standaizl Procto r density or as direct ed by the erginees to • <br />ensure that the embankment is adequate to support the antici- <br />pated volume of <br />used. traffic and weight and speed of vehicles to be <br />Material will be placed in an embanlm~nt only when its <br />moisture content is within acceptable levels to achieve design <br />omitaction. <br />'Prng~orary erosion control ~++Pa~~res (ditches, berms, straw <br />dikes, silt fence) will be utilized durirq etnbanlanent <br />construction to minimize sedimentation and erosion until <br />permanent control measures can be established. Iimrediately <br />upon completion, measures will be taken to stabilize all <br />embankments with vegetation cover or other means as approved <br />by the requ_latoxy authority to m;n;m;ze erosion. Where a <br />vegetation Dover is used, consideration shall be given to <br />providing an appropriate growth medium. • <br />12-37d Revised 12/10/92 <br />