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House shown in photos: This house is apre-existing structure that now sits on land <br />owned by Continental Materials. Under agreement with the previous owners the occupants of <br />this house can continue to reside in the house for approximately 2.5 more years at which point <br />the house is be vacated so the land can be mined in accordance with the pending amendment. <br />The collapse of the slope and affecting of land east of the permit boundary would not present <br />any hazard to the structure for many years, if ever, and presently presents no hazard. The new <br />fence shown in the photos was installed by Transit Mix Concrete. It replaces the previous <br />fence, but'no longer is coincident with the permit boundary. <br />Addirional erosion potenti¢l: Further collapse of the top of the slope is possible, but <br />should not be a major factor in the near future. The land slopes away from the top of the <br />collapsed land. Therefore, there is little opportunity for water to flow over the edge of the <br />broken area. It is possible the incursion could become slightly larger through further slope <br />adjustment, but the actual amount should be quite small, probably no more than a few hundred <br />square feet. <br />CAUSE OF THE PROBLEM: <br />As the permit file will reflect, during late 1991 and early 1992, Transit Mix Concrete <br />was involved in negotiations with the Division regarding bonding. One of the issues in those <br />negotiations was limiting disturbance of additional land by significant additional expansion of <br />mining areas. Two principle elements came of those negotiations. <br />1. The bond was increased several times over its previous amount. <br />2. In response to Division concerns about the amount of land that was disturbed, <br />Transit Mix Concrete replaced topsoil and implemented temporary revegetation on <br />approximately 35 acres of land that had been stripped in preparation for mining. <br />In an effort to limit new disturbances, Transit Mix concentrated on mining in areas that <br />were already disturbed. The land discussed in this report was one area where mining had been <br />occurring for years and was already disturbed. Although efforts were taken to not mine so far <br />that the slope would break back as far as it did, it unfortunately collapsed more than expected. <br />This resulted in the top of the slope breaking back into unpermitted land. In past experience, <br />mining these slopes in this way does not result in a collapse as great as this one was. <br />Daniels Pil 2 Problem April 28, 1993 Page 2 of 4 <br />