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F loure EA-4A <br />• Environmental Air <br />\veragc. Annual ""Ph Concentration <br />1979-2009 <br />I.(x)l;.-12 <br />u <br />1.(x)1: 1-) <br />[.(X)I:- I IN <br />IN[ Quarter 3rd Quailer 3rd Qu;uler 4th Quarter I.t t)uarter 2nd (Quarter <br />2(N);{ 2(N)2{ Itx)s '(x)x 2(xM) '(xH <br />?AS0Cck AS Main - 1-111uent('011CC1111-alioll <br />• Figure EA-4B <br />F.iivironnicntal All' <br />Average Annual 111) Ph COI)CCIIII-ittiOll <br />1979-2OO9 <br />IW% <br />. <br />()()r'(' <br />80% <br />70°Ic <br />(4)% <br />CJ <br />w -% <br />30% <br />20%, <br />10°Ic <br />0% <br />• <br />12 <br />Ist Quarter 2nd Quarter 3rd Quarter 4th Quarter Ist Quarter 2nd Quarter <br />'_008 2(k)S 208 ?(N)8 NMI) 2(.K)() <br />AS Creek AS Main -0 F:flluent Concentration