ENFORCE31548

• Permit No: C1981010
• IBM Index Class Name: Enforcement
• Doc Date: 7/19/1995
• Doc Name: CERT MAIL CARDS
• Violation No.: CV1995017
• Media Type: D
• Archive: No

DRAFT REVEGETATION RULES
I oiasio I
grain, fruit or vegetables, the plant material sampled shall be
restricted to the harvested commodity. Quadrats can be distributed
independent of transects or treated as subsamples when associated
with other quadrats along a transect. If quadrats are used to sample
non-forage crops such as grain, fruit, or vegetable crops, the plant
material sampled shall be restricted to the primary harvestable
commodity; or
(ii) total harvest method. If the total harvest method is used for non
forage crops such as grain, fruit, or vegetable crops, the plant
material sampled shall be restricted to the harvested commodity.
(c) Woody plant density shall be sampled using one of the following methods.
(i) Belt transects which are quadrats at least 1 meter wide by at least 5
meters long. Woody plants rooted in the quadrat are counted.
(ii) Circular or rectangular quadrats at least one meter squared which
can be distributed independent of transects or treated as subsamples
when associated with other quadrats along a transect. Woody plants
rooted in the quadrat are counted.
(2) Demonstrations of sample adequacy and revegetation success for cover,
productivity and woody plant density shall be made with one of the following
statistically valid approaches. For cover and productivity, the approaches in (a)
through (c) or (e) are acceptable. For woody plant density, the approaches in (a)
through (e) are allowable.
(e) If the reclaimed area sample mean is equal to or greater than 90% of the
relevant success standard, success may be demonstrated by direct
comparison if sample size adequacy is demonstrated by the formula below.
A minimum of 15 sample observations shall be taken even if statistical
sample adequacy is achieved with fewer observations.
Nm = tss2
(dx)a
where:
s= =Sample variance
d =Precision (.10)
x =Sample mean
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