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it Metropolitan Council <br />Regional Benchmarks <br />Measuring Our Progress <br />2011 Update <br />The output levels of the Total Nitrogen <br />studied pollutants, with the 100 - 160% 20 <br />exception of nitrogen, A 140% - 15 <br />remained stable in 2010 80 - <br />11 0% <br />and improved compared to ° 71, 10 <br />2000. Some variability y 60 - <br />from year to year is <br />expected due to weather <br />- <br />conditions and sampling 40 -40d <br />error. Despite variability, <br />the general trend for 20 - <br />phosphorus and O <br />suspended solids over o -15 <br />2000-10 has been <br />downward (improving). <br />The output level of <br />nitrogen remains higher than the input level, although both are significantly lower compared to <br />2000. <br />1,600 <br />1,400 <br />1,200 <br />v <br />1,000 <br />0 800 <br />i- <br />0 <br />H <br />600 <br />400 <br />200 <br />0 <br />l+ <br />o� <br />I 1 I <br />i <br />OR CO. <br />2000 2003 2004 2005 2006 2007 2008 2009 2010 <br />Input Output Target Load o % Difference <br />Total Suspended Solid Load <br />2000 2003 2004 2005 2006 2007 2008 2009 <br />Input Output — ° Target Load o % Difference <br />Source: Metropolitan Council Environmental Services. <br />2010 <br />0 <br />-10 <br />a) <br />-20 yr. <br />0 <br />od <br />-30 c <br />a) a <br />2 C <br />a <br />-40 <br />50 <br />coin <br />° <br />co <br />-10 <br />15 <br />