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• <br />• <br />Appendix G - Sump Shutdown Test Methods and Results 4 <br />300 <br />250 <br />200 <br />E <br />n <br />a <br />w <br />150 <br />z <br />z <br />'a <br />a <br />100 <br />50 <br />35 <br />30 <br />25 j <br />Y <br />W <br />W <br />rY <br />v <br />20 z <br />R <br />a <br />K <br />15 ? <br />W <br />3 <br />10 ° <br />LL <br />5 <br />0 <br />Jan Feb Mar Apr May June July Aug Sept Oct Nov Dec <br />MONTH <br />-*-Monthly Average Sump Pumping Rates (gpm) -6- Monthly Average Flow in Ralston Creek <br />Figure 3. Monthly Average Sump Pumping Rates vs. Long-term Average Flow Rates in <br />Ralston Creek <br />35.0 <br />30.0 <br />25.0 <br />W <br />20.0 <br /> <br />D 3.5 <br /> <br /> 3.0 <br /> R= = 0.8 <br /> 2.5 <br /> o? .00e <br /> ? ooo <br />lo RZ = 0.7929 <br /> <br /> 17-1 oe 2 <br />0 <br /> . <br /> / <br /> <br />? / <br /> <br /> <br /> 400, <br /> <br /> 1 <br /> 00 . <br /> / <br /> llam?,, <br /> / <br /> 0. <br /> N <br />Y D <br /> 0 Q <br /> / <br />9 <br /> 0. <br />O <br />LL <br />Y <br />W <br />V 15.0 <br />z <br />O <br />F <br />tl1 <br />w <br />L <br />C <br />Z <br />2 <br />H <br />H <br />5 a <br />w <br />rc <br />4. <br />0 <br />5 <br />0 <br />0.0 50.0 100.0 150.0 200.0 250.0 300.0 <br />SUMP PUMPING RATE (gpm) <br />A "Ralston Creek Flow" ? Precipitation -Linear (Precipitation) - - Linear ("Ralston Creek Flow") <br />J <br />10.0 <br />5.0 <br />00 <br />Figure 4. Monthly Average Sump Pumping Rates vs. Long-term Average Flow Rates in <br />. <br />Ralston Creek <br />4109B.071109 Whetstone Associates