UFC 3-210-10
25 October 2004
capacity is highest. Examples of LID techniques to control rates of runoff and
watershed timing include:
Use flatter rather than steeper grades, provided that adequate drainage
for buildings and traffic is maintained
Reduce the height of slopes, to prevent runoff from gaining speed as it
moves downhill
Where flow begins to accumulate, increase the length of flow paths,
diverting and redirecting the flow, preferably with vegetated features
Minimize use of curb and gutter systems and piped drainage systems in
favor of grassed swales
Minimize the amount of impervious area used for pavement
Disconnect impervious areas by directing runoff from buildings and
pavements onto lawns or other vegetated areas, keeping flow velocities at
a level that will not cause erosion
Preserve naturally vegetated areas and existing topography in places
where these help slow runoff and encourage infiltration
Use weirs and check dams in swales
5-4.5
Use of Integrated Management Practices (IMPs). Once all of the design
strategies and techniques have been implemented, IMPs are selected to achieve the
site water quality and quantity objectives. IMPs are distributed, multifunctional,
small-scale controls, selected based on their ability to achieve the site design water
quality and quantity objectives in a cost effective manner. IMPs are not a "one-size-fits-
all" approach. For example, using amended soils to filter and store runoff may be
appropriate for a rural road section with high traffic but inappropriate next to a parking
area that may be subjected to compaction from overflow parking or vehicle movement.
More details on IMPs and their selection are found in Chapter 8.
5-4.6
Pollution Prevention. The goal of pollution prevention is to reduce, reuse
and recycle a variety of pollutants before they become environmental problems. The
final step of the LID design approach is to incorporate programs that keep pollution out
of runoff in the first place and, consequently, to increase the longevity of the IMPs.
Reduction of fertilizer, pesticide and herbicide use and the implementation of regular
street sweeping are some common pollution prevention activities.
NAVY: Pollution Prevention (P2) is one of the four pillars of the Navy's
Environmental Quality Initiative (EQI). EQI aims to use P2 to attain environmental
compliance, while minimizing life cycle costs. Rather than promoting pollution
prevention because it is desirable from an environmental standpoint, EQI uses pollution
prevention to minimize the cost of environmental compliance. For example, building a
bioretention cell to treat runoff from a parking lot before discharge into a stream is a
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