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iii iiiiiiiiuiii iii <br />sss <br />WHITEWATER ~LDING MATERIALS CORP. - W~EWATER PIT 500 <br />INERT FILL NOTICE (ftut.E 3.t.5(s)) <br />From time to time over the life of the mine we may import <br />inert materials into this mining operation, as defined in Rule <br />1.1(20). It will be used to partially construct the slopes from <br />the existing ground level into the mine floor. This fill will <br />then be covered with finer material and revegetated where re- <br />quired by the current permit. if the material is good dirt we <br />will use it to supplement the topsoil needs for the above water <br />slope. As explained in the original permit application there is <br />little soil on the site and any imported dirt will only increase <br />the chances of revegetation being successful. Additional mate- <br />rial that can be used as fish habitat and bank armoring may also <br />be used below the water line. The reclamation plan approved will <br />not be changed and we will continue to do reclamation concurrent <br />with mining. The fill, IF AVAILABLE, will be used to create the <br />slope, but sloping will not be delayed if it is not. <br />The exact amount of material to be imported is unknown. we <br />will report the volume imported each year in the annual report <br />and keep a running total so the Division will know how much and <br />where it has been placed. we estimate approximately 60~ of the <br />material to do the sloping will be imported if the material is <br />available. <br />importing fill will begin immediately upon notice by the <br />Division that this notice is acceptable. We will continue to <br />import inert fill until reclamation is complete or we no longer <br />have a source. <br />Since the approved plan is to turn this into a private lake <br />with 3:1 slopes around the perimeter, the importation of fill <br />material will allow us to maximize the material being removed and <br />still complete reclamation as approved. The material used in the <br />slopes will not be exposed, unless it is fish habitat or bank <br />armoring. The dirt imported will enhance reclamation success, <br />because of the lack of topsoil on the site. <br />No specific compaction rates are proposed for the fill. The <br />material usually available contains smaller pieces of concrete, <br />or dirt mixed with the larger pieces of the same material. This <br />makes it very difficult to achieve a specific compaction rate. <br />In most cases, the larger materials can be laid on end and filled <br />around or placed on a flat place and filled around. while we <br />take no action to reach a specific compaction rate, the way the <br />material is placed tends to compact it. we run heavy equipment <br />over the filled area during the filling process and the material <br />is compacted as a result. Stabilization of this fill material is <br />not a concern because of the limited amount used in the slopes <br />and the way it is placed. What voids do remain are usually under <br />large pieces of material and little settling is possible. No <br />structures will be built on the fill, nor will the depth of the <br />fill be so great as to affect offsite lands if settling occurred. <br />Received <br />APR 2 9 1998 <br />bute'ngo Field OffiCH <br />bivisbn of Minerals 3 Geology <br />