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<br />.' .... (' (., <br />,,~ L 1I;"1 <br /> <br />work, teT!'l~orary fence Pl"otect"ion for lands ad-iacent to 't,he rif,ht- <br /> <br />of-way will he provided at all times durin~ the continuation of the <br /> <br />contract H()r]~. 'I'enporary f'~ncin,1"! ~-lill be l"'rJJT10Vi3d l1S a part of <br /> <br />claan1lp opl-.:!rations. <br /> <br />3. Use of Lxplosives, Drilling and Blastinr <br /> <br />The transportation, hand.l.in;".l;, storap;e and Uf'G of f.'xplos{ves Hill <br /> <br />be subject to the provisions of PClrt II, U. S. Bureau of Recl2matio'l <br /> <br />Supplement from Safety and Health Rerculations for Constructio;]." <br /> <br />Blastin~ will be permitted only after adp-quate provisions are made <br /> <br />for thp- protection of persons, the work, and public or private <br /> <br />p:,:",':1r0.rty. Blastinn: ad-j acent to d\lellin~s, structures or fac~li tie;3 <br /> <br />shull he careFully :'lann'3d and ccntrolled to elimInate the Do,;sibi.:.it'i <br /> <br />of daJTt,Y~e. !-Then usin~ '2xplosi~re.s prec-3.utions 'Hill be used to prevent <br /> <br />scatt~ri~l~ 01- roc1:s? stUT'lPS, and o~cher debris outsid.~ Hork areas ~ <br /> <br />In Grillil1(r o~)erations vrJlen drillin.. in :,::"ock or o.~11er dust-producir.r <br /> <br />material, the dust ,.rill h8 controlled Hithin the threshold limit <br /> <br />Va.lllGS S<::lt forth in Thr3snold L.lmi t Values of Airborne Contaminants <br /> <br />for 1S70 of the American ConfC:l'lence of Government Illdust!'ial Hv~ienistC'., <br /> <br />All pe'"cussion-type drillinl': except foT' jackhammers "ill be p(;>:,foT'med <br /> <br />with drilling a9paratus equipped Hith water or chemical dust-control <br /> <br />~.y"stemG eX' other equivalent m€illlS of ,-::ontrc:J,i:1J! -I,:1:e d'.~,3~':o :r::Cl~J.j,p;n8nt <br /> <br />and solutions Hill blJ suitable- ,~~or opr:!ratior. in fre0zi!)~-.r; Heath~~:!.'., <br /> <br />53 <br />