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1 <br /> MR <br /> ;eiv Small <br /> ;accxca un x;;c <br /> uiatilization ail _aeric ,°coir Very <br /> ==s 10w aapor ?zeszure. espec slawtt oec�L:sQ u` <br /> - <br /> and bee:use of s-rcng sorntiaa�oI oil r e ixesvier waigst ire j oils. <br /> Ground-water c,mra=Lj=anton nay resui= �- lar a said <br /> the varer table. :hea:e. she more soluble cccponears �s '_at reach <br /> the mound-water or tor= emulsions with i w'il_ dissolve is <br /> aaiaip aramacic and lover aalec -- The soluble frac man is <br /> g�4v vs in No. uiar ::cigar aLinna;.zc comsou'as- in. ona <br /> 3 2 fuel ail. 40� o= the water =olublc3ccion vas mads <br /> uj o: aromatic compounds c°noosed of ll ca_haa atass ann >�s <br /> compounds containing 1p and ZZ carbon atoms (2'_1S). The n err4 0 <br /> dissolved is the ground s:acm r crap move hundreds to thousan Sof meters. <br /> 3y comparison, the 'dissolved f:accioa, �:isica floats as °z raters. <br /> the water table as a seaazrte the setrf�e of <br /> tens Of mr. ors, sinless cracks or fissures wee prasseatexpectad to rano@ oitT <br /> The mov®ment of fuel <br /> oil raraooaeats in ground ,a: <br /> Cr ut d.—ware discharges <br /> suaplies, resulting in izgeat_on a-goses_:eav <br /> conc=inaced soil g `O sur=ace eater or the aozseaa. <br /> - par- to ssirxace nater d^:i;,.$ of <br /> coy also result in ingesri.on exposures sad in derMai exposre:ures suflrom P-.the <br /> e <br /> recreational use of these waters. 1he pocential also exists <br /> ' th. <br /> uptake of polynuclear stomatic coanounds +n mor `"'e <br /> napnrbalene, mOthYlMaphzh animals 3lreal oil <br /> domeuh' and higher eighz °AH's) by fi <br /> m . tch may also <br /> lso aresult in human e�.-nz and <br /> asures. �osuyts <br /> to nigh conccntrarions oz l oil comnonemztiin drinking <br /> rood are expected to be rare because cainater and <br /> aag becomes aaparear at <br /> „ .relatively low conceutza=inns (982). <br /> Volatilisation of <br /> potential source oz h fuel oil hydrocarbons in soil is .another <br /> smsizi exposure. Drspiceheir fele=iveiv <br /> -* pressure, the more volaeila components of fuel ail is soil zlow a o <br /> low •rapor <br /> saruratimg the air in <br /> °acluding <br /> upward to theta soil pores, and diffusing in all direc_:ons <br /> and surwace. the vapors may <br /> of comes or other structures _ ti r diffuse i:tto basements <br /> exposuxes to the buildin s oc ?_. the area. cesult_Zg _a :_halation <br /> when she soil is cositamy-giroants" �-tmosu.es may be more ==r ns <br /> and pipes. rather from linking underground storage canks <br /> the :rom surface sDil?s. because =110 tore -volatile <br /> - components do not have an ovportt:nir, to evaporate before perecrat_ay <br /> :be soil. Eve= then. Z-his etposure <br /> _xpor aataway '_s a coecccd <br /> ant for fuel oils <br /> than for tore volati_� `o De testa :zss <br /> gasolr^.e. ?erroleea pr°cLe-s •tt <br /> 66.2.4 Other Sources of F=an Exoosue <br /> Daca on ambient concenr_a:ions of - •tel : <br /> well as in food .and dri-=!z<+ ui _a air -.Id .Qcer as <br /> literature_ 3 water are :sot readily- available ;-.j �:e <br /> Exposure lis Guide. an specific cosponencs may be "ound <br /> _rs other chapters az ills Cnida. Sevaral population g*_oups st ,ceottble <br /> ro exposure to fuel oil zav be <br /> ' annei _waived _.. _s:Ei <br />