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OSTP Design Summary Worksheet UNIVERSITY Minr esota Pollution OF MINNESOTA Control Agency Property Owner/Client: Cathren Mehaffey Site Address: 4720 Watertown Road, Orono MN 55340 1. AVERAGE DESIGN FLOW: A. Design Flow: 600 Gallons Per Day(GPD) Note: The estimated design flow is considered a peak flow rate including a safety factor.For long term performance,the average daily flow is recommended to be< B. Septic Tank capacity: 2000 Gallons 60%of this value. C. Number of Septic Tanks or Compartments: 2 Effluent Screen&Alarm? Yes — Type of Soil Treatment and Dispersal Area Type of Distribution 0 Trenches 0 Bed ®Mound 0 Gravity Distribution ®Pressure Distribution-Level 0 Pressure Distribution-Unlevel 0 At-Grade 0 Drip Distribution System Type ❑✓ TypeI 111 Type II El Type III ill Type IV ❑Type V 2. SITE EVALUATION: A. Depth to Limiting Layer: L 14 inches 1.2 ft B. Measured Percent Land Slope: 5.0 % 0.0 C. Soil Texture: Loam Percolation Rate: 8 Minutes per Inch D. Soil Hydraulic Loading Rate: 0.60 GPD/ft2 E. Contour Loading Rate 12 Gal/ft 3. DESIGN SUMMARY Trench Design Summary Absorption Area ft2 Sidewall Depth in Trench Width in Total Lineal Feet ft Number of Trenches Maximum Trench Depth in Bed Design Summary Absorption Area ft2 Media Below Pipe in Bed Length ft Bed Width ft Maximum Trench Depth in Mound Design Summary Absorption Area 500 ft2 Bed Length 50 ft Bed Width 10.0 ft Absorption Width 20.0 ft Clean Sand Lift 1.8 ft Upslope Berm Width 12.0 ft Downslope Berm Width 21.0 ft Endslope Berm Width 13.0 ft Total System Length 76 ft Total System Width 43 ft At-Grade Design Summary Absorption Bed Width ft Absorption Bed Length ft System Height ft Absorption Bed Area ft2 Upslope Berm Width ft Downslope Berm Width ft Endslope Berm Width ft System Length ft System Width ft