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<br /> <br />For J. A. Kiger January 12, 1996 <br />WHST PIT HXCHSS SPOIL FILL CONSTRIICTION UPDATH AND CHRTIFICATION <br />During the quarter beginning October 1, 1995 and ending December 31, 1995, <br />I inspected the area in which the West Pit Excess Spoil Fill is being <br />constructed. The purpose of these inspections was to inspect the areas currently <br />being dumped complete by the truck/shovel fleet and final sloped using dozers; <br />inspect the areas being topsoiled, contour furrowed and seeded; inspect the east <br />side collection ditch construction; inspect the fill for areas of water seepage <br />or surface drainage and to satisfy the requirements of CDMG Rule 4.09.1(11a). <br />During the inspections it was observed that the two percent, 25 foot wide <br />catch bench ditch at the 7150 elevation was complete; the surface rock drain down <br />the three-to-one slope was complete from the 7150 elevation ditch to the toe of <br />the fill, and the truck dump had advanced to the point that the 7250 contour was <br />nearly dumped in. During the quarter several other notable events have occurred <br />in the Excess Spoil Fill Area. <br />During the quarter, the rock underdrain that runs beneath the west pit fill <br />was completed. The end of the drain was uncovered by shovels and track <br />excavators and the underdrain was completed from station 20+50 to 27+00. (see <br />• photographs 83 through 85) <br />During the quarter, the surface drain that runs along the east side of the <br />west pit fill was completed between the 7050 and the 7150 elevations. (See <br />photograph 86) <br />During the quarter, the fill monitoring survey monuments for the 6950, 7959 <br />and 7150 benches were put in place, all slightly below the terrace ditches on <br />those corresponding benches. (See photograph 87) <br />Final contours were accomplished on most of the fill below the 7250 <br />elevation, except the very east and west ends of the fill. (See photographs 88 <br />through 92) <br />Attached to this report are my certification that all construction <br />requirements have been met thus far in constructing the West Pit Excess Fill, and <br />the color photographs as required by the CDMG regulations concerning offsite <br />Excess Spoil Fills. <br />~~~~ ~ `/fir- "~ <br />Stephen R. Hinkemeyer e <br />Sr. Mining Engineer <br />• c.c. central files <br />