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• <br /> I.Wl -, 12 <br /> I.(X)I: 13 <br /> I .(X)I :- I.1 <br /> <br /> <br /> <br /> <br /> I.(N)I; 15 <br /> I .(X)I ;- 16 <br /> I.(X)I 17 <br />Is( (luarter 2nd Ouaner rd Quancr 4th (luancr Ist Quancl- 211d Oualler <br />2(X)X 2(X)8 2(X)X 2(X)8 2(X)Q 2(X)<) <br />AS ('reek AS Main • Ftllucnt ('t)nccntrsEtion <br />• I'i`-ure EA-313 <br />I -.nviron-mental :fir <br />AvCra?? ;Annual Ra COncenll-ati0ll <br />1970-2009 <br />100%r <br />90% <br />X0"c <br />7O"c - <br />60 <br />50% <br /> <br />4070.: <br />:;0c <br />20 c; <br /> <br />10C7(, <br />0% <br /> Ist (waiter 2nd (Quarter 3rd Ocarter -lth Qu,u7er 1st Quaver 2nd (lnarter <br /> 2(X)X 2(X)5 2(X)8 2(X)8 2(X)k) 2(X)9 <br />• AS C'rcck AS Main 0 1=.1'11ucnt Concentration <br />Figure FA-3A <br />Environmental Air <br />Average Annual ""Ra Concentration <br />1970-20x)9