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OSTP Trench Design UNIVERSITY „� <br /> Minnesota Pollution Worksheet OF MINNESOTA �. <br /> Control Agency ~'—-� <br /> 1. SYSTEM SIZING: Project ID: v 04.20.2016 <br /> A. Design Flow: 375 GPD <br /> B. Code Maximum Depth: 30 inches Designers Maximum Depth: 24.0 inches <br /> C. Soil Loading Rate: 0.45 GPD/ftz Contour Loading Rate: 12.0 gal/ft <br /> D. Required Bottom Area: Design Flow (1.A)=Loading Rate (1.C) = Initial Required Bottom Area <br /> 375 GPD= 0.45 GPD/ftz = 833 ft2 <br /> E. Select Dispersal Media: C ; Rock <br /> (selection required) [�, Registered Produc[ <br /> F. Select Distribution Method: C! PfeSSU�e C:Gravity-Drop <br /> C�Gravity-Other <br /> G. If distribution media is installed in contact with sandy or loamy sand or with a percolation rate of 0.1 to 5 mpi <br /> indicate distribution or treatment method: <br /> 2. TRENCH CONFIGURATION: ROCK <br /> q, Initial required Sidewall Design <br /> trench bottom area Absorption BOttom Area Bottom Area trench - <br /> Reduction Multiplier ' <br /> (ftz): (from 1.D) (inches) bottom area �co�er <br /> 6 to 11 1 833 � <br /> Q �Distribution <br /> 12 to 17 20% 0.8 666 <br /> 833 <br /> 18 to 23 34% 0.66 sidewall <br /> 24 40% 0.6 <br /> i <br /> � � ` —` j <br /> B. - /��— <br /> Width <br /> C. � <br /> D. � <br /> E. <br /> � � � <br /> F. <br /> � � � <br /> G. � � <br /> H. <br /> � � � <br /> J. � <br /> K. <br /> � � � <br /> L. � <br /> M. <br /> �� � � � � <br />