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T�6/e 1 <br />RUNOFF FACTORS FOR STORM SEWERS <br />(Values of "C" in � = CIA) <br />UNDEVELOPED LAND <br />Wood 6 Forest.. .. „ <br />Sparse Trees 6 Ground.Cover..... <br />Light r,rass to Bare Ground...... <br />DEVELOPED AREA <br />.............. <br />.............. <br />Pavement & Roofs.. ... , <br />Gravel Roads 6 Parking Lots,,,,,,,,,,,�������� <br />City Business .. .. ............ �� ���� <br />Apartment Dwelling Areas..........�� �� � � <br />industrial Areas (Heavy)......... ������������ <br />Industrial Areas (Light).......,..������������ <br />Earth Shoulder .............. ������������ <br />Playground ........ .......................... <br />Lawns, Meadows 6 Pastures....... ��1.�������� <br />Parks 6 Cemeteries ............................ <br />1.0 <br />1.5 <br />3.0 <br />3.5 <br />9.p <br />6.0 <br />9.0 <br />- 1.5 <br />- 3.0 <br />- 3.5 <br />- 4.0 <br />- 6.0 <br />- 9.0 <br />- 15.0 <br />SINGLE FAMILY RESIDENTIAL <br />(Dwelling Unit/Gross Acre) <br />FLAT <br />0-58 <br />ROLLING <br />�59 <br />0.10 0.15 <br />0,15 0.20 <br />0.20 0.25 <br />� Cex�'st <br />0.90 <br />0.75 <br />0.85 <br />0.80 <br />0.70 <br />0.60 <br />0.50 <br />0.25 <br />0.20 <br />0.15 <br />DU/GA ..................... . <br />DU/GA ................................. <br />DU/GA ........................ ....... <br />DU/GA ................................. <br />DU/GA ..................... ..... <br />DU/GA ................................. <br />DU/GA ................................. <br />0.90 <br />0.80 <br />0.90 <br />0.85 <br />0.80 <br />0.70 <br />0.50 <br />0.30 <br />0.25 <br />0.20 <br />0.30 <br />0.35 <br />0.40 <br />0.45 <br />0.50 <br />0.60 <br />0.70 <br />,. . <br />