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<br />FIGURE 2 ESTIMATION OF INFILTRATION I INFLOW <br /> <br />Meter Shed <br /> <br />IM051 <br /> <br />Estimated Residential Equivalent Connections <br />Inch Miles of Sewer pipe (w/o services) <br /> <br />I <br /> <br />11~~lin-mi <br /> <br />Method 1 - Assume no 1/1 in January <br /> <br /> Annual January pejk Mo. <br /> Average <br />2004 0.448 0.362 0.540 June <br />2005 0.432 0.367 0.534 Oct <br />2006 0.435 0.408 0.579 May <br /> <br />1/1 <br />(mgd) <br />0.086 <br />0.065 <br />0.027 <br /> <br />(MG annual) <br />31.39 <br />23.73 <br />9.86 <br />64.97 <br />1,543 <br />100,249 <br />33,416 <br /> <br />(%) <br />19.20% <br />15.05% <br />6.21% <br />13.48% <br /> <br /> <br />Monthly Flow Data (mgd) <br /> <br />Calculated GPO per connection <br /> <br />2006 rate $ <br />Total Cost $ <br />Annual $ <br /> <br />(3 yr avg) <br /> <br /> Annual January pejk Mo. <br /> Average <br />2004 496 400 597 <br />2005 478 406 591 <br />2006 481 451 640 <br /> <br />Method 2 - Assume early morning low flow is entirely inflitration (clear water) <br /> <br />May - September 2007 <br />8/30/2007 Daily Flow <br />Dry Day - Early Morning Flow <br />Net Wastewater <br /> <br />10,000 Igph <br /> <br />I <br /> <br />453,000 Igpd <br />240,000 gpd <br />213,000 gpd <br /> <br />Infiltration rate: <br /> <br />(EMFfln mil <br /> <br />2,050 gpdJin mi <br /> <br />Wastewater per connection: <br /> <br />236 gpdlconnection <br /> <br />Peak Flow 9/20/07 <br /> <br />Peak Hour Rate: 20:00 hrs <br />Dry day flow at time <br />INFLOW <br /> <br />Inflow per connection <br /> <br />49,861 gph 1.197 mgd <br />16,568 gph 0.398 mgd <br />33,293 gph 0.799 mgd <br /> 0.690 <br /> 1.491mgd <br /> 3.29 <br />884 gpdlconnection <br />6,824 gpdlin mi <br /> <br />Normal Peak <br />Adjusted Peak <br />Calc. PIA Ratio <br /> <br />Inflow per in mile <br /> <br />M051 <br />