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• r <br />MEMORANDUM <br />TO: Bob Oswald <br />Division of Mimetals <br />FROM: Mark L. Orbeck ~,~~:ll~ w/irZ~rf~~~~~~- <br />DATE: December 27, 1993 <br />RE: Delacroce Pit- File it M-93-050 <br />III IIIIIIIIII111111 <br />999 <br />~~ ~~ti~ <br />~.~o "`(. <br />a-19~`r~S_~igS <br />In our phone conversation last week, you stated that there were several items to be considered prior to <br />setting the bond costs for this project. I have discussed these items with the applicant, Mr. Ray <br />Dellacroce and offer the following comments for your review: <br />1) Rock Exwvation• Gravel sampling was performed by C'I7. / Thompson. Inc. on December <br />16, 1992, a Dopy of the results of which was iarluded within the application. These results <br />indicate quality gravel to depths ranging from 15 foot to 40 foot The mining plan is graded <br />to maximiu gravel yields within the sample locations. Mining will pn>ceed in such a manner <br />that when the excavation in each phase is complete the resulting topography will match the <br />proposed final contours. Excavation requiring ripping or specialized equipment is not <br />anticipated and final contouring can be achieved with the scxteduled equipment and machinery <br />( dour amd front end loader ). <br />2) Excess Fill Operatlons• As can be seen in the mining plan. fill attar within the site ate <br />insignificant in sun`acc arts anti volume. My refetrace to cosmetic shaping penainv to the two <br />existing knolls which will tentain in the fiturl comouring. These knolls are the easterly ends of <br />two prominent forgers or ridges on the present site and will be shaped by excavating material <br />west and above the knoll. Vegetation and topsoU on the knoll will amain undisturbed <br />~Iu/'~~~~ throughout the mining phases. <br />3) Topsoil Placement and Spreading- All stripped vegetation and topsoU will be placed at <br />1 ~, _ the west (upper end) of each mining phase. This will inhibit erosion on the lower end of the <br />Pti'~ I, /,~.~5 closed pit area at the contour breaks and will allow a downward movement for Wpsoil <br />G- spreading. <br />4 <br />~~' 4) Access Roads- The applicant will require access to the proposed site as well as the '/ <br />reclaimed areas above to monitor vegetative growth and weed control and ultimately for ranch <br />and stuck operations. The pit acce,5s road will essentially remain in the presem location. '~` _ " <br />Stock is sewrtd from site by existing fencing and will be kept off newly reclaimed areas <br />~- <br />l understand that you anticipate a final determination of bond requirements on December 29, 1993. If <br />1 can amswer any other questions. please don't hesitate to call. <br />cc: Ray Dellacroce <br />e <br />GRAEF <br />5C II~EMF,R <br />and A.rsOtlalet Inn. <br />IOd E00 SJNI21dS OOH2J0~00 SHE 0990 tiE9 6iL Lb~Ei LZ-ZI-E66i <br />