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OSTP Design Summary Worksheet UNIVERSITY <br /> Minnesota Pollution OF MINNESOTA ` <br /> Control Agency ��; <br /> Property Owner/Client: Glen&Michaela Chelberg v 11.05.31 <br /> Site Address: 4490 Watertown Road, Orono Hennepin <br /> 1. AVERAGE DESIGN FLOW: <br /> A. Design Flow: 450 Gallons Per Day(GPD) Note: The estimated design flow is considered a peak flow rate including a safety <br /> factor.For long term performance,the average daily flow is recommended to be< <br /> B. Septic Tank capacity: 2000 Gallons 60%of this value. <br /> C. Number of Septic Tanks or Comportments: 2 Effluent Screen&Alarm? Optional <br /> — Type of Soil Treatment and Dispersal Area* Type of Distribution* <br /> O Trenches Q Bed QQ Mound 0 At-Grade 0 Gravity Distribution QQ Pressure Distrthution-Level 0 Pressure Distribution-Unkvel <br /> Q Drip Distribution 0 None-Holding Tanks Only <br /> *Selection Required Benchmark Elev= 100 ft <br /> System Type Benchmark Location: Door threshold <br /> 0 Type I ❑Type II D Type III ❑Type IV ❑Type V Type of Distribution Media: <br /> Rock <br /> D. Pump Tank 1 Capacity: Gallons Pump Tank 2 Capacity: Gallons <br /> 2. SITE EVALUATION: <br /> A. Depth to Limiting Layer: 18 inches 1.5 ft Elevation of Limiting Layer: 100.6 ft <br /> B. Measured Percent Land Slope: 12.0 % 0.0 <br /> C. Soil Texture: Clay Loam Percolation Rate: 5 Minutes per Inch <br /> D. Soil Hydraulic Loading Rate: 0.45 GPD/ft2 E.Contour Loading Rate 12.0 Gal/ft <br /> 3. DESIGN SUMMARY <br /> Trench Design Summary <br /> Absorption Area ft2 Sidewall Depth in Trench Width in <br /> Total Lineal Feet ft Number of Trenches Maximum Trench Depth in <br /> Designers Max Trench Depth in <br /> Bed Design Summary <br /> Absorption Area ft2 Media Below Pipe in Bed Length ft <br /> Bed Width ft Maximum Bed Depth in Designers Max Bed Depth in <br /> Mound Design Summary <br /> Absorption Area 375 ft2 Bed Length 38 ft Bed Width <br /> 10.0 ft <br /> Absorption Width 26.0 ft Clean Sand Lift 1.5 ft Berm Width (slope 0-1%) ft <br /> Upslope Berm Width 10.3 ft Downslope Berm Width 22.0 ft Endslope Berm Width 14.1 ft <br /> Total System Length 66 ft Total System Width 42 ft <br /> At-Grade Design Summary <br /> Absorption Bed Width ft Absorption Bed Length ft System Height ft <br /> Absorption Bed Area ft2 Upslope Berm Width ft Downslope Berm Width ft <br /> Endslope Berm Width ft System Length ft System Width ft <br />