My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
2009-05-01_REPORT - C1981041
DRMS
>
Day Forward
>
Report
>
Coal
>
C1981041
>
2009-05-01_REPORT - C1981041
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
8/24/2016 3:46:04 PM
Creation date
5/4/2009 11:19:16 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1981041
IBM Index Class Name
REPORT
Doc Date
5/1/2009
Doc Name
2008 ARR 2008 Revegetation Evaluation Report
From
J.E. Stover & Associates
To
DRMS
Permit Index Doc Type
Annual Reclamation Report
Email Name
MPB
Media Type
D
Archive
No
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
69
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
2.0 SAMPLING METHODS <br />2.1 Samole Layout <br />The sample layout protocol for the revegetation evaluation is a procedure designed to better <br />account for the heterogeneous expression of the multiple seedings within the various reclaimed areas <br />while precluding bias in the sample site selection process. By design, the procedure is initiated randomly, <br />and thereafter, samples are identified in a systematic manner, along grid coordinates spaced at fixed <br />intervals, e.g. 100 ft. (see Exhibit 1 and Maps 2 through 10). In this manner, "representation" from <br />across the entire reclaimed area is "forced" rather than risking the chance that significant pockets (or <br />seedings) are entirely missed, or overemphasized as often occurs with simple random sampling. Sample <br />site selection within the reference areas occurred in a similar manner, although the grid dimensions were <br />altered accordingly to accommodate the different sizes. <br />The actual procedure for sample site location occurred as follows. First, a fixed point of reference <br />locatable from year to year was selected. Second, a systematic grid of appropriate dimensions (e.g., 100 <br />ft. X 100 ft.) was selected to provide approximately 10 coordinate intersections within each sampling unit <br />(20 for reference areas), which could then be used for sample sites. Third, a scaled, computer generated <br />representation of the selected grid was overlain on a computer generated map of the area utilizing north- <br />south and east-west compass points which could be easily established in the field. Initial placement of <br />the grid was controlled by the fourth step, selection of a pair of random numbers (between 0 and 100) <br />used to facilitate location of the initial coordinate point from the fixed reference location. Fifth, using a <br />hand held surveying compass and hip-chain (or pacing techniques) all sample points were located in the <br />field and temporarily marked. The locations of all 2008 sampling sites are indicated on Maps 2 - 10. <br />Once a selected grid point was located in the field, ground cover sampling transects were always <br />oriented in the direction of the next site to be physically sampled to further limit any potential bias while <br />facilitating sampling efficiency. This orientation protocol follows that which is indicated on Exhibit 1. <br />Depending on logistics, timing, and access points to the target sampling area, the field crew would <br />occasionally layout a set of points along coordinates in one direction and then sample them in reverse <br />order. However, orientation protocol was always maintained (i.e. in the direction of the next point to be <br />physically sampled). If the boundary of an area was encountered before reaching the full length of a <br />transect, the orientation of the transect was turned 90° in the appropriate direction so the transect could <br />be completed within the target unit. In this manner, boundary samples were retained entirely within the <br />target unit by "bouncing" off the boundaries <br />CEDAR CREEK ASSOCIATES, Inc. Page 6 Snowcap Coal Co. - 2008 <br />Revegetation Evaluation
The URL can be used to link to this page
Your browser does not support the video tag.