Laserfiche WebLink
StuJ~ Pfan Dtsigrt <br />• This phase helped WFU and DMG determine the mix of topsoil/subsoil cover which was placed <br />on the refuse disposal area and set a procedure for conducting statistical evaluation of the <br />revegetation success. <br />Test Plot Reclamation Plan <br />The test plot reclamation plan consisted of the following tasks. <br />Eight test plots, each 30 x 30 meters in size, were established and fenced in RP-1. Four of <br />these plots have northern exposure. The other four plots have southern exposwe. Figure 1 <br />shows the location of these plots. <br />• Each set of the four test plots were covered with varying thicknesses of topsoiUsubsoil: <br />12-inch, 24-inch, 36-inch and 48-inch. All plots have 12-inches of topsoil cover. On the <br />12-inch cover plot, all of the material is topsoil with no subsoil. The other three plots have <br />12-inch, 24-inch, and 36-inch of subsoil under the 12-inches of topsoil. The test plots were <br />constructed from April to July 1990 concurrent with the reclamation of refuse disposal area <br />RP-1. <br />The following aze plot designations with associated cover depths as shown on Figure 1: <br />• S] - I2" Topsoil Nl - 12" Topsoil <br />S2 - 12/12" Topsoil/Subsoil N2 - 12/12" Topsoil/Subsoil <br />S3 - 12/24" Topsoil{Subsoil N3 - 12/24" TopsoiVSubsoil <br />S4 - 12/36" Topsoil/Subsoil N4 - 12/36" Topsoil/Subsoil <br />• A total of eight soil samples were collected on June 21, 1990 by WFU and analyzed for <br />characteristic pazameters. Four samples were collected on the north and south plots. Samples <br />were collected at the approximate center point of each plot and composited for each lift; <br />12-inch, 24-inch, 36-inch, and 48-inch. That is, all fow samples taken from the 12-inch <br />increment on each exposwe were composited (labeled as 1 foot lift), the three samples taken <br />from the 12-inch to 24-inch increment were composited (labeled as 2 foot lift), the two <br />samples taken from the 24-inch to 36-inch increment were composited llabeled 3 foot lift) <br />and the 36-inch to 48-inch sample was labeled as the 4 foot lifr. This was done for the north <br />and south test plots. <br />• The test plots were mulched with straw, and seeded with a rangeland seed drill to form a <br />crimped mulch. The seed mix used on the test plots is contained in Table 1. <br /> <br /> <br />