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05.VBF - P8 RESULTS - 052214
P8 Urban Catchment Model, Version 3.4 Run Date 02/10/14 Case Aspen Hollow - Post - 021014.p8c FirstDate 01/01/71 Precip(in) 514.7 Title Aspen Hollow - Post-Dev LastDate 12/19/81 Rain(in) 411.53 PrecFile p8_default.pcp Events 897 Snow(in) 103.15 PartFile nurp50.p8p TotalHrs 96048 TotalYrs 10.96 Case Title Aspen Hollow - Post-Dev Case Data File Aspen Hollow - Post - 021014.p8c Path C:\P8 Urban Catchment Model\P8 Version 3.4\ Case Notes: Storm Data File p8_default.pcp Particle File nurp50.p8p Air Temp File File p8_default.tmp Time Steps Per Hour 4 Minimum Inter-Event Time (hrs) 10 Maximum Continuity Error % 2 Rainfall Breakpoint (inches) 0.8 Precipitation Scale Factor 1 Air Temp Offset (deg-F)0 Loops Thru Storm File 1 Simulation Dates Start 6/1/1970 Keep 1/1/1971 Stop 12/19/1981 Max Snowfall Temperature (deg-f) 32.0 SnowMelt Temperature (deg-f) 32.0 Snowmelt Coef (in/degF-Day) 0.06 Soil Freeze Temp (deg-F) 32.0 Snowmelt Abstraction Factor 1.00 Evapo-Trans. Calibration Factor 1.00 Growing Season Start Month 5 Growing Season End Month 10 5-Day Antecedent Rainfall + Runoff (inches) CN Antecedent Moisture Condition AMC-II AMC-III Growing Season 1.40 2.10 NonGrowing Season 0.50 1.10 Watershed Data Watershed Name DA:DIRECT RUNOFF DA:POND 1 DA:POND 2 DA:POND 3 DA:POND 4 DA:POND 5 DA:POND 6 Runoff to Device DIRECT RUNOFF POND 1 POND 2 POND 3 POND 4 POND 5 POND 6 Infiltration to Device Watershed Area 11.8 5.5 4.8 3 16.8 5.9 11.5 SCS Curve Number (Pervious) 72 66 66 66 66 66 66 Scale Factor for Pervious Runoff Load 1 1 1 1 1 1 1 Indirectly Connected Imperv Fraction 0.13 0.13 0.13 0.13 0.13 0.13 0.13 UnSwept Impervious Fraction 0 0.25 0.25 0.25 0.25 0.25 0.25 UnSwept Depression Storage (inches) 0.02 0.02 0.02 0.02 0.02 0.02 0.02 UnSwept Imperv. Runoff Coefficient 1 1 1 1 1 1 1 UnSwept Scale Factor for Particle Loads 1 1 1 1 1 1 1 Swept Impervious Fraction 0 0 0 0 0 0 0 Swept Depression Storage (inches) 0.02 0.02 0.02 0.02 0.02 0.02 0.02 Swept Imperv. Runoff Coefficient 1 1 1 1 1 1 1 Swept Scale Factor for Particle Loads 1 1 1 1 1 1 1 Sweeping Frequency 1 1 1 1 1 1 1 Sweeping Efficiency 1 1 1 1 1 1 1 Sweeping Start Date (MMDD) 501 501 501 501 501 501 501 Sweeping Stop Date (MMDD) 1031 1031 1031 1031 1031 1031 1031 P8 - POST DEVELOPMENT Device Data Device Name DIRECT RUNOFF POND 1 POND 2 POND 3 POND 4 POND 5 POND 6 Device Type PIPE POND POND POND POND POND POND Infiltration Outlet Normal Outlet POND 4 Spillway Outlet POND 4 Particle Removal Scale Factor 1 1 1 1 1 1 Bottom Elevation (ft)928 958 960 934 926 936 Bottom Area (acres)0.054 0.023 0.019 0.038 0.03 0.138 Permanent Pool Area (acres)0.318 0.236 0.144 0.328 0.244 0.539 Permanent Pool Volume (ac-ft)1.19 0.55 0.26 0.91 0.83 2.51 Perm Pool Infilt Rate (in/hr)0.04 0.04 0.04 0.04 0.04 0.04 Flood Pool Area (acres)0.446 0.324 0.197 0.794 0.336 1.052 Flood Pool Volume (ac-ft)2.14 1.19 0.6 4 1.7 6.89 Flood Pool Infilt Rate (in/hr)0.04 0.04 0.04 0.04 0.04 0.04 Infilt Basin Void Fraction (%) Detention Pond Outlet Parameters Outlet Type ORIFICE ORIFICE ORIFICE ORIFICE ORIFICE ORIFICE Outlet Orifice Diameter (in)18 18 18 18 18 18 Orifice Discharge Coef 0.6 0.6 0.6 0.6 0.6 0.6 Outlet Weir Length (ft) Weir Discharge Coef Perforated Riser Height (ft) Number of Holes in Riser Holes Diameter Flood Pool Drain Time (hrs) Swale Parameters Length of Flow Path (ft) Slope of Flow Path % Bottom Width (ft) Side Slope (ft-v/ft-h) Maximum Depth of Flow (ft) Mannings n Constant Hydraulic Model Pipe, Splitter, Aquifer Parameter Hydraulic Res. Time (hrs)1 Particle Data Particle File nurp50.p8p Particle Class P0% P10% P30% P50% P80% Filtration Efficiency (%) 90 100 100 100 100 Settling Velocity (ft/hr) 0 0.03 0.3 1.5 15 First Order Decay Rate (1/day) 0 0 0 0 0 2nd Order Decay (1/day-ppm) 0 0 0 0 0 Impervious Runoff Conc (ppm) 1 0 0 0 0 Pervious Runoff Conc (ppm) 1 100 100 100 200 Pervious Conc Exponent 0 1 1 1 1 Accum. Rate (lbs-ac-day) 0 1.75 1.75 1.75 3.5 Particle Removal Rate (1/day) 0 0.25 0.25 0.25 0.25 Washoff Coefficient 0 20 20 20 20 Washoff Exponent 0 2 2 2 2 Sweeper Efficiency 0 0 0 5 15 Water Quality Component Data Component Name TSS TP TKN CU PB ZN HC Water Quality Criteria (ppm) Level 1 5 0.025 2 2 0.02 5 0.1 Level 2 10 0.05 1 0.0048 0.014 0.0362 0.5 Level 3 20 0.1 0.5 0.02 0.15 0.38 1 Content Scale Factor 1 1 1 1 1 1 1 Particle Composition (mg/kg) P0%0 99000 600000 13600 2000 640000 250000 P10% 1000000 3850 15000 340 180 1600 22500 P30% 1000000 3850 15000 340 180 1600 22500 P50% 1000000 3850 15000 340 180 1600 22500 P80% 1000000 0 0 340 180 0 22500 POST DEVELOPMENT RESULTS Variable OVERALL DIRECT RUNOFF POND 1 POND 2 P0% 51.3 60 78.4 P10% 78.4 87.1 95.8 P30% 83.3 93.4 98.3 P50% 86 97 99.3 P80% 88 99.6 99.9 TSS 84.7 95.3 98.7 TP 70.6 80.7 90.8 TKN 67.2 77.3 88.7 CU 72.5 83.1 91.6 PB 80.1 90.8 96 ZN 54.2 63.3 80.4 HC 80.1 90.8 96 REDUCTION (%)