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extraction occurs lower than the current adjacent floodplain. Higher on the <br />ridges mining areas often daylight on the west side of the pit and blend <br />gently into the unrnined hillside. After slope reduction on the east side of <br />the pit, a slope in the vicinity of about an 8:1 is produced if sufficient <br />material is available, but sometimes the slope is as steep as a 5:1. This <br />ultimately results in a shallow, slightly concave notch in the top of the hill <br />that, when completed, will blend nicely into the current topography. The <br />25 foot maximum deviation is believed to have been easily maintained <br />where backfilling has been completed. <br />C. If backfilling was done, describe the material used in the backfill, the average depth of <br />backfill, and any information regarding special treatments such as additional compaction. <br />REPORT: All backfilling in the last year has been done with overburden or discard <br />mined sand that is too fine or too contaminated with clay to process and <br />turn into product. Depth of backfill can sometimes be as much as 15 feet, <br />but generally is about 10 feet on average on the slopes just east of the Coal <br />Creek floodplain. Backfill depths in the more upland pits located more <br />toward the top of the hills averages about 5 to 10 feet, depending on the <br />location. More shallow pits (6 to 10 feet deep) often receive very little <br />backfilling as little was removed that could be used to backfill. These aze <br />most often graded by slope reduction in a cut/fill approach and then <br />topsoiled with soil that has been saved in windrows azound the pit <br />perimeter. <br />D. If topsoiling was done show the area where topsoil was placed, the mean depth of <br />replacement, whether the soil was separate from overburden or blended with overburden, <br />and any special treatments applied to the soil. <br />REPORT: The primary area of topsoiling in the last year was a former Jones Fine <br />Sand Pit located just west of the main road. (A photo is included in the <br />photo section. Other photos of this area are also found on the CD. This <br />azea is also identified on the map.) This is an azea of about 3 acres. The <br />soil was placed on top of overburden. Although the area contains <br />significant annual weed growth that helps protect the soil from washing, <br />this area is planned for seeding later in 2005. Any loss of soil by erosion is <br />captured in a remaining, unreclaimed pit at the base of the hillside. That <br />soil can then be removed and either replaced on the slope when it is <br />completed for seeding or used elsewhere. <br />E. If seeding was done, provide a list the species planted, the rates of planting, and the <br />method used in planting. If woody species were planted or transplanted, provide a list of <br />what was planted, where the woody species were planted, and the purpose for planting <br />woody species. <br />REPORT: No seeding has been done in the last yeaz. One small, old pit that presents <br />no erosion hazard and was backfilled and leveled last year is being <br />watched to see what species invade. This kind of monitoring on a safe <br />location is an important part of more advanced revegetation techniques. <br />Annual Status Report - 2005 for State Land Board July 15, 2005 Page :3 of 10 <br />