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DRAINAGE AREA MAP - DETENTION SIZING
40'040'
-PERVIOUS AREA
ISSUANCES
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PROFESSIONAL
PROJECT MANAGER
FILE NUMBER
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70050012
JPM
JPM
JRS
DRAINAGE AREA
MAP - DETENTION
SIZING
DRAINAGE AREA PERVIOUS AREA IMPERVIOUS AREA RUNOFF CURVE NUMBER RATIONAL RUNOFF COEFFICIENT
TOTAL PROPERTY AREA 1.23 Ac 0.50 Ac 0.73 Ac 91 0.59
* PERVIOUS AREA IS OPEN SPACE IN GOOD CONDITION - HYDROLOGIC SOIL GROUP D
*IMPERVIOUS AREA IS PAVED PARKING LOTS, ROOFS, AND DRIVEWAYS - HYDROLOGIC SOIL GROUP D
*DETENTION CALCULATIONS FOR ARIA APARTMENT DETENTION BASIN ASSUMED A RUNOFF CURVE NUMBER OF 92.8 FOR THIS PROPERTY.
-IMPERVIOUS AREA