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2/27/97 9:8:5 am Barghausen Engineers page 2 <br />ARCO @ NEC SR-527 AND 100TH ST SE <br />W0RKS4 FILE 12918A.BSN <br />JOB NO. 2918 <br />----------------------- - -------- <br />BASIN SUMMARY <br />BASIN ID: 10PRE <br />SBUH METHODOLOGY <br />TOTAL AREA........ <br />RAINFALL TYPE....: <br />PRECIPITATION....: <br />TIME INTERVAL....: <br />NAME: 10 YR PREDEVELOPED <br />0.72 Acres <br />TYPEIA <br />2.25 inches <br />10.00 min <br />BASEFLOWS: <br />AREA..: <br />CN.... . <br />TC..... <br />0.00 cfs <br />PERV <br />0.67 Acres <br />86.00 <br />22.53 min <br />IMP <br />0.05 Acres <br />98.00 <br />0.88 min <br />ABSTRACTION COEFF: 0.20 <br />TcReach - Sheet L: 180.00 ns:0.1500 p2yr: 1.55 s:0.0200 <br />impTcReach - Sheet L: 30.00 ns:0.0110 p2yr: 1.55 s:0.0100 <br />PEAK RATE: 0.13 cfs VOI: 0.07 Ac-ft TIME: 480 min <br />BASIN ID: 2DEV NAME: 2 YEAR DEVELOPED <br />SBUH METHODOLOGY <br />TOTAL AREA.......: 0.78 Acres BASEF:,OWS: O,00 cfs <br />RAINFALL TYPE....: TYPElA PERV IMP <br />PRECIPITATION....: 1.55 inches AREA..: O.U`; Acres 0.73 Acres <br />TIME INTERVAL....: 10.00 min CN.... : 86.00 98.00 <br />TC.... . 2.94 min 3.98 min <br />ABSTRACTION COEFF: 0.20 <br />TcReach - Sheet L: 10.00 ns:0.1500 p2yr: 1.55 s:0.0100 <br />( impTcReach - Sheet L: 100.00 ns:0.0110 p2yr: 1.55 s:0.0100 <br />impTcReach - Channel L: 300.00 kc:42.00 s:0.0050 <br />PEAK RATE: 0.23 cfs VOL: 0.08 Ac-ft TIME: 470 min <br />BASIN ID: 2PRE <br />SBUH METHODOLOGY <br />TOTAL AREA........ <br />RAINFALL TYPE....: <br />PRECIPITATION....: <br />TIME INTERVAL....: <br />ABSTRACTION COEFF: <br />TcReach - Sheet L: <br />impTcReach - Sheet <br />PEAK RATE: 0.06 cfs <br />31 <br />NAME: 2 YR PREDEVELOPED <br />0.72 Acres BASEFLOWS: <br />TYPElA <br />1.55 inches AREA..: <br />10.00 min CN..... <br />TC..... <br />0.00 cfs <br />PERV <br />0.67 Acres <br />86.00 <br />22.53 min <br />0.20 <br />180.00 ns:0.1500 p2yr: 1.55 s:0.0200 <br />L: 30.00 ns:0.0110 p2yr: 1.55 s:0.0100 <br />VOL: 0.03 Ac-ft TIME: 480 min <br />IMP <br />0.05 Acres <br />98.00 <br />0.88 min <br />