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RECTANGLE CIRCLE TRIANGLE <br />H <br />W E <br />I I <br />D DIAMETER G <br />H T <br />LENGTH BASE <br />• Rectangle: Area = length X width <br />• Circle: Area = 3.14 X Radius' <br />• Triangle: Area = % X (Base X Height) <br />2. Measure the depth of the liquid in multiple areas to calculate the average depth. <br />3. Calculate the total volume in gallons. <br />(Area X Depth X 7.48) = Total Gallons <br />MANHOLE COVER FLOW MEASUREMENT <br />1. Refer to Appendix D for determining volume based on manhole pick holes and vent holes. <br />REVISION 4.0 (4/17) 19 F -$ 2 17 <br />