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®~YTi`~e~f i ~, <br />Figure 3: The effect of impervious cover on urban phosphorus load under several scenarios, as computed <br />by the Simple Method <br />U <br />tLS <br />v <br />0 <br />o_ <br />Q <br />0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 9510 <br />Impervious Cover <br />2 <br />1.8 <br />1.6 <br />1.4 <br />1.2 <br />1 <br />0.8 <br />0.6 <br />0.4 <br />0.2 <br />0 <br />Figure 4: The effect of impervious cover on stream temperature (Galli, 1991) <br />20 <br />u- 16 <br />a~ <br />~ 12 <br />m <br />Q <br />E <br />a~ 8 <br />E <br />co <br />a~ <br />v~ 4 <br />0~ <br />0 <br />10 20 30 40 50 60 70 80 90 10 <br />Impervious Cover <br />Delta-t is the difference in mean or max stream temperature from a <br />developed stream, compared to an undisturbed stream. <br />w~ =~ a~~ : - : ,~,rC a s~~; r-~ ,~~ y4,c; L, i~}f,~'= ,t 103 <br />~~ - - <br />r <br />v <br /> <br />~~ Stream Delta-T { <br />--Mean <br />~ Maximum <br />