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PERMFILE52017
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PERMFILE52017
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Entry Properties
Last modified
8/24/2016 10:55:56 PM
Creation date
11/20/2007 3:09:38 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981012A
IBM Index Class Name
Permit File
Doc Date
11/16/2006
Section_Exhibit Name
Section 2.05 Operation and Reclamation Plan
Media Type
D
Archive
Yes
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<br />(1) <br />Nmin = (t~S=) + (dX) 2 <br />where: <br />Nm;n = the minimum number of observations needed, <br />t = 1.833 (the t-table value for a two-tailed t-test with <br />(10-1) degrees of freedom at the 90% confidence level), <br />sZ = the sample variance, <br />d = .1 (level of precision for estimate of the mean to be <br />within 10% of the actual mean), and, <br />z = sample mean. <br /> <br />Initially, ten transects will be randomly located and <br />oriented in each area. Transect locations or orientations that <br />result in overlap of previous transects or the sampling area <br />boundary will be randomly redirected prior to the point of overlap. <br />Data from the ten initial transects will be used to determine <br />sample size adequacy. If sample size adequacy is reached with ten <br />transects, no further transects will be monitored. <br />Ground cover will be evaluated along each transect by sampling <br />two points (1.0-meter apart) at 1.0-m intervals. Cover will be <br />classified as vegetation, litter, or rock. Lack of cover will be <br />classified as bare soil. Vegetation will be further classified by <br />species. Each transect will consist of 50 point samples. <br />Using a Cover-Point Optical Point Projection Device (Model 2), <br />each point sample will be determined by projecting the ocular sight <br />vertically downward to the sample location on the transect and <br />recording all "hits" on vegetation. The "hits" will be used to <br />estimate total vegetative cover for each transect according to <br />equation 2. <br />(2) <br />Total Veg. Cover = No. Hits on Vegetation x 100 <br />Total Hits of Points <br />The mean vegetative cover for each of the two areas is <br />the mean value for the ten transects. <br />The composition of plant species in each area will also <br />be evaluated using the data acquired from the vegetative cover <br />transects. Data from the transects will be used in equation 3 to <br />• determine the relative cover of each species detected: <br />2.0 5 - 51 (a ) (revised 8/29/97) - - <br />III <br />X19 rr <br />
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