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■10-^ <br />BRENSHELL HOMES <br />DRAINAGE CALCULATIONS <br />Lot 6. Block 4. NAVARRE HEIGHTS <br />I. EXISTING (BEFORE) CONDITIONS <br />a Lot area O.IS4±ac <br />b Time of cone. = 12 min <br />c. Runoff CN ■ 65 <br />d. Q1 = OCFS <br />QIO = OCFS <br />QIOO = OCFS <br />PROPOSED (AFTER) CONDITIONS <br />a Lot area <br />b. Tinwofeone <br />c. RunoffCN “ <br />d Ql <br />QIO <br />QIOO <br />O.IS4±ac. <br />10 minutes <br />70 <br />OCFS <br />OCFS <br />OCFS