Figure 10-4. Office Complex Retrofit

Low Impact Development
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UFC 3-210-10

25 October 2004

of the parking area is also deteriorated and should be replaced. The width

of the pavers will be based on their infiltration capacity. The depth to

groundwater also needs to be determined to make sure that the gravel

bed underneath the pavers can be properly constructed to store and drain

stormwater.

Drainage Area Six: A bioretention cell will be constructed within a

vegetated island at the north end of this parking area.

Drainage Area Seven: An area of the pavement will be removed and

replaced with a bioretention cell.

Drainage Area Eight: This is near the loading dock area. Permeable

pavers will be constructed. A sand layer may be incorporated into the

system to increase efficiency.

Drainage Area Nine: A bioretention cell will be located to the east of the

access road, near the entrance to the storage lot to the south of building

399. This area will treat runoff from the access road and the storage area.

The driveway apron will be reconstructed to direct runoff to the cell.

Rooftop: A vegetated roof is proposed for building 168. This will filter

pollutants from rain falling on the rooftop and will provide detention of

rooftop runoff.

Figure 10-4. Office Complex Retrofit

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