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• Substantial reductions in summer peak demands at the .Tones Ferxy Road Water <br />Treatment Plant indicate that customers are using less water for outdoor irrigation, <br />perhaps in response to OWASA's seasonal rate structure and to year-round <br />conservation requirements enacted by Catrboro, Chapel Hill, and Orange County <br />(Figures 8 and 9). <br />Figure S. ! Average;and Peak Day Demands, 1996-2005 <br />`£ <br />1a ____ ... ___ _ - - - - <br />q <br />12 <br />~ <br />~ <br />"~ _ <br />}'. <br />_ ~ <br />` <br />._ <br />__ <br /> <br />r- <br />- <br />,E ,~ y, ~ , <br />, <br /> <br /> ~ ~ ~ <br /> <br />e <br />~ <br />~ <br />~ _ <br /> <br />,~^ <br /> <br />'' G <br /> <br />Q ~ :~ ~ .~ <br />4 <br /> 1996 1997 1996 ' 1999 200D ( 2D01 2002 4 2003 20D4 2005 <br />Figure 9, ti Water Demand Peaking Factors, 1996-2005 <br />':7 <br />-----. <br />.7D <br />1.65: -~ ~ ~-~ ~- ~ ~ ~- ~-~- Mastar Plan AssumPtlon = 7.65 --.-- <br />~ 16D --- --- =~ --_ __ _ ___ <br />~ 1 <br />55 -- _. a ___ .f _~ __ _-- <br />. <br />8 1.50 <br />_ <br />- ~ ._. ~%~-_ <br />C <br />1.45: <br />' ----- --- --- Adoplod Gaal: To not oxcoad 1.45 -- <br />a _ <br />D <br />n 136 <br />,. <br />~,~ <br />- <br />~ <br />~ <br />fix <br />- <br />. <br />~- <br />" <br />,1- <br /> <br />_ <br />0 <br />130 <br /> <br />~ <br /> <br />'}~ <br />' <br />_ <br />W <br /> <br />~% <br /> <br />~ <br />_ / <br /> <br />"~ v <br />r <br />_ <br />3 <br /> <br />~- <br />125 - ~ ' <br />.. <br />" k , <br /> ~ ~ ~ ~; __ ~ ~: <br />.zo <br />1996 :1997 1999 !1999 2000 20D1 2002 .'.2003 2D04 'P2005 <br />V5 s <br />%~C,Sk~f34tl/i <br />tr(t~Ui'ati~ <br />Peaking Factor =Maximum One-Day Demand Divided by Average Annual Demand <br />• Decreasing peals flows at the Mason Farm Wastewater Plant during rainy months <br />suggest that OWASA's long-term program to systematically identify, repair and <br />replace older sewer lines is successfully reducing unwanted inflow and infiltration of <br />stormwater into the sewer system (Figure 10). <br />figure l0. : Wastewater Plant Peaking Ratios 1996.2005 <br />Maximum Month Fiow : Annual Average <br />tso <br /> <br />10 <br />' 3001 Mastor Pian Assumod <br />c 1.40 <br />' .. ~.~~~_~.~..~..~ , Peakin0ftatlo=1.4 <br />€ ~..~_~_~.~_~_~_~ .. <br />c <br />. <br />Q '. Ac Wa120D0.20D6 PaakinD <br />•• i.]D <br />L ---_ ... _._..____ ,G3 ...___. ___ ____.__.. _ _._ ftalio=1.10 <br />C <br />g° R 120 = T ;ter- - ,' <br />w ~" , : _ `~ - - <br />q ~s' . <br />~~' .+~ , <br />d~ ~ ,. <br />~ 110 - " _ r^~' ~ - _- .~ <br /> <br />100 ~"'_,> 3/,`Y! - ~' ~_ :' ~ _ ~ _ <br /> <br />' <br />0 <br />90 ""' "' <br />. <br />. <br />1996 1997 1996: 1999 2000 2001 2002 2003 2004 2005 <br />OWAS~1-Water and Se+aer Capacity Inrplications of Increased Del~elopmerrt Densit7~ <br />Pnge 1.5 of 21 <br />