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LEACHATE COLLECTION SYSTEM FLOW ESTIMATES <br />WESTERN GRAVEL E &P WASTE DISPOSAL FACILITY <br />NWCC INC. <br />DECEMBER, 2010 <br />V =K* (dh /dl) / P V= VELOCITY OF FLOW IN FEET PER DAY <br />K= HYDRAULIC CONDUCTIVITY IN FEET PER DAY <br />P= EFFECTIVE POROSITY <br />dh /dl= GRADIENT OF FLOW SUCH AS FEET PER FEET <br />T =D /V D= DISTANCE TRAVELED IN FEET <br />T =TIME IN DAYS <br />TRAVEL LOCATIONS <br />HYDRAULIC CONDUCT <br />POROSITY <br />dh \dl <br />VELOCITY <br />DISTANCE <br />TIME <br />feet/day <br />cm /sec <br />% <br />feet/day <br />feet <br />days <br />Side Slope <br />(Composite Geonet) <br />28.3 <br />1.0E -02 <br />25% <br />0.333 <br />37.696 <br />50 <br />1.33 <br />Cell Floor <br />(Leachate Gravels) <br />Total Days of Travel <br />142 <br />5.0E -02 <br />32% <br />1 0.03 <br />1 13.2844 <br />1 320 <br />24 09 <br />25.4 <br />Notes: <br />Sidewalls of Cell constructed to 3:1 slope with on -sided composite geonet <br />Floor of Cell constructed with 3 percent slope and 12 inches of leachate gravels <br />dh /dl is the difference in site elevations divided by the distance. <br />file: 8718 /LCRS Flows.xls <br />