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PLA~E SAND & GRAVEL LLC - S8H ~E <br />INERT FILL NOTICE (RULE 3.1.5(el) <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. Where there is little soil on the site any imported dirt <br />will only increase the chances of revegetation being successful. <br />Additional material that can be used as fish habitat and bank <br />armoring may also be used below the water line. The reclamation <br />plan approved will not be changed and we will continue to do <br />reclamation concurrent with mining. The fill, IF AVAILABLE, will <br />be used to create the slopes, but sloping will not be delayed if <br />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 10$ of the <br />material to do the sloping will be imported if the material is <br />available. <br />Importing fill will begin upon notice by the Division that <br />this notice is acceptable and our reclamation permit has been <br />approved. We will continue to import inert fill until reclama- <br />tion is complete or we no longer 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 />