Laserfiche WebLink
'' r�•:'t->•� �r »�" kw.;,-^ �, "�-.s F� � '°� -.-sic+.'r�"F �'a•��,..:sr: <br /> FL. <br /> �iLL 1.1L] <br /> Soils <br /> Z CCLaR t0 Je`^ �_ A ?Ori^"-=a _r <br /> taIIt ,a_ h; �al2cul. pair Z: 3i1 <br /> C20- -�41G5, <br /> 71rL;Cularly > �(-SG=r3L10IIY 15 ?`_L7eGLi+a JO 8e aL'Z1:35L <br /> �raviottsly cane- inaLed soils -here tae =o=-ati,7e si=lts cay ha <br /> unavailable; 0.-, the other hand. sail-water conzcxt>< _tcreases so <br /> and slows ani Zion o= - _ r4`ion <br /> _ 6== :I4arOCarOOaS. 1n _- SL1SG� rock. z he r__g— mos <br /> 7S 1. C-LLoi15 `5 —ch less l:rd off= � �' DoroL^ soils-Zea �W 'rereren- <br /> sP ding through crevices, soactimes casa3i=g the direcr-ion of <br /> zlow, may occur. DeteSminat_on of the ?oteut�al S_oL=1C-wata_ <br /> Contamination in fissured rock i.s Chess rery dir'fic'E r. ('1811). <br /> The Vater-solucle poreion of No. 2 `_a oil (a hither ;z-mvaratur. <br /> distilling fraction rhea dies.! ,oil) was shown to be aimosr eztiraly <br /> arotaatic (99" even though the product itself tras =•86 aliphatic; h* <br /> aliphatic fuel oil ltpdroc=bons have very low water solubility compared <br /> with the aromatics (1849.2238). The largest percentage (-,, - o; the <br /> water-soluble zraczio:i ail firel oil was represanzed by C,aromatics <br /> (1849)' In c'ecp, saturated soils szi rh no sail air, the aromatics <br /> represent the greatest <br /> threat of concamina-tion to orouna-water <br /> supplies. Solubility in :.eueaus solution of polar, non--hydrocarbon <br /> components of some higher boiliLg paw Gleam =—action.-, such a=, diesei <br /> oil and other fuel oils has also been reported (_233)_ <br /> In summary, the physicai distribution of fuel oil cor.:amir-ation <br /> affeccz ices :t=act on. and removal. from. the soil eny_=Oase- 7-.:1.@rel <br /> spreading along the surface increases the initial contaminzceQ area, <br /> . <br /> chile _acilicating evaporative removal or sorption o: di ferent <br /> hydrocarbons, Subzurzace release or verzicai penerrarlOn cger_laced by <br /> gravitation and caai.11ary forces decreases avraporat_on. reauces the <br /> imporCance of some tr==forcacion pathjays (see belo:r), and may lead to <br /> ground-water contamination. y <br /> Photooxid.a,rion has been reported to play a significant :ole is the <br /> chemical degradation of pcCroieuca hydrocarbons .a the sunlit <br /> enviroramenZ (1845,1843,2252.2259,2337) . �1l:anes, benr-emea, and <br /> ;ono-substituted benzenes have been shourn .o be relaciveiv =esis=mc to <br /> Photolysis is aqueous systems: -yienes :notal}=ec slow!- -mile <br /> zrisubseituzed benzenes and naphthalenes ahocolv=ed ac, races <br /> corspecizive with volatiliza.xaa (1345). ea et al, <br /> anthracene and other molvcytenor= _:int <br /> clic aromatic ..r?fie ) _ lye <br /> carrion range of diesearo <br /> l ;_el .e sUbjecc --o p^otoch-c—cal oxic:tion: <br /> Seraza(a)py=er_e is the most susceptible of „e FAH comuouras, surgescl;ig <br /> =tsar Che residual :uel oils may be evan :cora ar2ec_ed J> <br /> photodegradawion than <br /> ciesei all. FeneE: =.za of O1_ ay_; <br /> Ow z�2sol_+ <br /> surz�celsmitsc�posure <br /> =o solar radiation while axle: -.z 'lateral <br /> spreading of ail over ;=per--eable or rockv surfcces rev z:omote <br /> substantial pnotooxid_:r;•:e cagradatiaa. _ <br /> z oxygenazee- --ccuC=_ o: <br /> ohorooxidacion are Senerally =ore water-soluble than zhe zarenc <br /> hydrocarboa.s and are Chu_, =ore Likely ro be laacned !=_om suil. CLILa ,a&uea <br /> toxici=j of the O"Senaced nydreearbaru has also been obser.ed ;7248, <br />