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. � <br /> TABLE 1 ' � <br /> RUNOFF FACTORS FOR STORM SEWERS <br /> . FLAT ROLLING � <br /> • . 0-51 �51 <br /> UNDEVELOPED LAND �•- - - �': <br /> Mood $ Forest . . 0 .05 0.10 � <br /> Sparse Trees F Cround Covcr . . . . : , 0. 10 0.15 <br /> Light Grass to Bare Ground . . . . . . 8.15 0. 20 <br /> � ; <br /> DEVELOPED AREA � <br /> Pavement $ Roofs . 0.90 0.90 <br /> Gravel Roads $ Parking�Lots . . . . . . 0.75 0.80 �; <br /> City Business . . . . . . . . 0.85 0.90 ; <br /> Apartment Dwelling�Areas . . . . . . . 0.80 0. 85 � <br /> Industrial Areas (Heavy) . . . . . . . 0 .70 0.86 �� <br /> Industrial Areas (Light) . . . . . . . 0.60 0 .70 <br /> Earth Shoulder . . . . . . . . . . . 0 .50 0.50 .� � <br /> Playground . . . . . . . 0.25 0.30 � <br /> Lawns , Meadows �$�Pastures . . . . . . . 0. 20 0. 25 <br /> Parks £� Cemetery , . . . . . . . . . 0.15 0 .20 <br /> SINGLE FAMILY RESIDENTIAL � � <br /> (Dwelling Unit/Gross Acre) <br /> 1 .0-1. 5 DU/GA . . . . . . . . 0.30 � <br /> 1 .5-3.0 DU/GA . . . . . . . . . . . . . � 0. 35 <br /> 3.0-3 .5 DU/GA . . . . . . . . . . . . . � � 0.40 � <br /> 3.5-4.0 DU/GA . . . . . . . . . . . . � � 0 . 45 <br /> 4.0-6. 0 DU/GA . . . . . . . . . . � � � 0 . 5a <br /> 6.0-9.0 DU/GA . . . . . . . . � . . . . . . 0 .60 � <br /> 9 . 0-15 . 0 DU/GA . . . . . . . . . . . . . . 0 . 70 <br /> � <br /> � <br /> � <br /> � I <br /> 18 • <br /> 5/79 . <br />