PERMFILE134631

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• Doc Name: LIMITED IMPACT AND SPECIAL 10 DAY PERMIT APPLICATION FORM
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UNITED STATES DEPARTPfENT OF AG.°,ICULTURE TECHNICAL GUIDE
So i1 Conservation Service Section IV
Colorado December 1976
STANDA.YD AND SPECIFICATIONS
CRITICAL A.FEA PLAMTIt:G
(Code 342)
Standard
Definition
Planting vegetation such as trees, shrubs, vines, grasses, or legumas or,
critical area. (Does not include tree planting mainly for wood products.)
Purpose
To stabilize the soil; reduce damage from sediment and runoff to do;.-nstream
areas; improve wildlife habitat; and enhance natural beauty.
r Where applicable
\,.
Cn sediment-producing, highly erodible or severely eroded areas, such as
dams, dikes, mine spoil, levees, cuts, fills surface-mined areas, and
denuded or gullied areas where vegetation is difficult to establish with
usual seeding or planting methods.
Specifications
1. Construction
A. Critical areas should not have slopes steeper than 3:1. Slopes of
6:1 or flatter are much more desirable. In general, the chances for
vegetation establishment increase as percent slope decreases. Small
areas steeper than 3:1 are often unavoidable, but should be kept to
a minimum.
B. Excess water from adjacent areas should not be allowed to flow onto
the critical area.
C. Length of slope should be properly controlled with diversions. They
will be constructed in accordance with Standards 6 Specifications
for "Diversions".
2. Seedbed Preoaration
See Standard E Soecifications for "Seedbed Preparation". For site pre-
paration an3 oth=_r quidelines for woody plantings see Standard 6 Specifi-
cations for "Woodland Site Preparation" and "Tree Planting".
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