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T-5 Extended Detention Basin (EDB)<br />

Design Procedure Form: Extended Detention Basin (EDB)<br />

Designer:<br />

Company:<br />

Date:<br />

Project:<br />

Location:<br />

H. Dauel<br />

BMP, Inc.<br />

November 29, 2010<br />

Subdivison D<br />

NE Corner of 34th Ave. and 83rd St.<br />

Sheet 4 of 4<br />

10. Overflow Embankment<br />

A) Describe embankment protection for 100-year and greater overtopping:<br />

Buried soil riprap at SE corner. Overflow is 12 feet wide and 12 inches lower<br />

than <strong>the</strong> surrounding embankment. Undetained peak velociies are less than<br />

5 fps.<br />

B) Slope of Overflow Embankment Z E = 4.00 ft / ft<br />

(Horizontal distance per unit vertical, 4:1 or flatter preferred)<br />

11. Vegetation<br />

Choose One<br />

Irrigated<br />

Not Irrigated<br />

12. Access<br />

A) Describe Sediment Removal Procedures<br />

Aggregate turf pavement access at SE corner of basin allows access to <strong>the</strong> bottom<br />

of <strong>the</strong> basin for all standard maintenance.<br />

Notes:<br />

EDB-16 <strong>Urban</strong> <strong>Drainage</strong> and Flood Control District December 2010<br />

<strong>Urban</strong> Storm <strong>Drainage</strong> <strong>Criteria</strong> <strong>Manual</strong> <strong>Volume</strong> 3

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