Laserfiche WebLink
• pits and backfilled over when the site is reclaimed. Auxiliary equipment will consist of water truck, pipe <br />[ruck, logging truck and pickup trucks. <br />Development drill hole 91001 will be located adjacent to an existing road. Therefore, except for access off <br />of the existing road no new road work will be required. <br />Por most of the development holes road construction will not occur, unless the ground if sufticiendy soft <br />to cause significant rutting. Otherwise, the vehicles will travel into the site over [he existing ground. It <br />has been TCC's experience [hat this minimizes damage to the topsoil and aids in the reclamation of the <br />site. In the event [hat topsoil must be salvaged due to soft ground conditions the soil will be bladed to the <br />side of the road. Approximately 18-24 inches of topsoil is available for salvage from the access corridor <br />servicing most development drill holes. Upon completion of [he project [he topsoil will be redistributed <br />over the site and seeded with the following seed mixture: <br />Species PLS lbs./acre <br />intermediate wheatgrass I <br />slender wheatgrass 55 <br />pubescent wheatgrass 9 <br />regar meadow brome .8 <br />lincoln smooth brome 65 <br />orchardgrass 2 <br />timothy I <br />cicer milkvetch 98 <br />• birdsfoot trefoil, 32 PLS r y, ~u ~r ~ ~ <br />~. ~ <br />At each of the locations a pad approximately 100 x 100 fee[ may be constructed by stripping the available <br />topsoil and windrowing i[ adjacent to the pad. The topography a[ most drill sites is relatively flat, <br />therefore little or minor pad leveling will be required. Drainage from the pads will be controlled by means <br />of berms, rock filters, silt fences, established vegetation, or a combination thereof in conformance with <br />Rule 4.21. Two mud pits and a trash pit will be excavated at each of the sites. The material excavated <br />from the pits will be stored on the pad. Upon completion of the drilling project the mud pits will be <br />backfilled with the excavated material, the site will then be regraded and topsoiled, and seeded with the <br />above seed mixture. <br />Each of the development drilling holes will be cemented from bottom to top utilizing a tremie pipe of drill <br />steel. The cementing of the hole will be done in accordance with MLRD regulations. Upon completion of <br />cementing an Abandonment Report will be completed and submitted to [he MLRD in accordance with the <br />regulations. <br />In reference to the monitoring well, TCC plans to use an existing exploration hole +vhich was kept open for <br />future monitoring use. The hole will be reworked and a 2" well will be installed. As is typical with TCC's <br />construction method the screened section of the well will have alternating sections of screen and steel pipe. <br />The screened interval will then be gravel packed and a bentoni[e seal placed on top of the gravel pack. <br />When [he well is no longer needed it will be grouted from bottom to [op utilizing a tremie pipe. A <br />completion diagram for the well will be forwarded to [he MLRD upon completion of the construction of <br />the well. Due to formation problems this +vell (91 M005) will be completed in the T++en[ymile Sandstone <br />• as opposed [o the Wadge Overburden. <br />Twentymile plans to install a new monitoring ++•ell (91M006) into the Wadge Overburden. This will <br />replace the well described immediately above. A nominal 7 5/8" hole may be extended down into the <br />MR 97-I i4 2.05-L' I Revised 9/9/97 <br />