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_Zg_ <br />XVI. Explosives - Rules 2.05.3(6) and 4.U8 <br />Information on the use of explosives can be found on pages 2.05-35 <br />through 2.05-4U and 4.06-1 through 4.08-5 in Uolwne 1. These sections <br />were reviewed for compliance by the Division. <br />The applicant has not finalized plans for explosive storage and handling <br />facilites. Therefore the following stipulation is necessary: <br />Stipulation No. lU <br />A PLAN FOR THE LOCATION AND CUNSTRUCTIUiV OF EXPLOSIVE STORAGE <br />AND HANDLING FACILITIES SHOULD BE SUBMITTED TU ANU APPRUUED BY <br />THE DIVISION PKIOR TU CUNSTKUCTION OF ANY SUCH FACILITIES. <br />With the acceptance by the applicant of the above stipulation the <br />Division finds the proposed operation in compliance with the requirements <br />of this section. <br />XVII. Backfillin and Gradin -Rules 2.U5.3(6)(b), 2.U5.4(2)(a), <br />2.05. 2 c 4.09, 4.13 a~ 4 <br />The sections of the amended application that discuss backfilling and <br />grading can be found on pages 2.05-L through 2.05-7 and 4.14-1 through <br />4.14-4 of Volume I and Maps 15 and 18 of Volume III. In response to <br />Division comments, the applicant has also submitted a document entitled <br />"Ory Mine Plan, Overburden Balance and Post-Mine Topography". <br />The applicant projects an overburden swell factor of 14% for <br />unconsolidated material and 42% for consolidated bedrock material. A <br />mathematical projection has been made, based upon normal properties for <br />spoil materials projected to be encountered. These calculations quantify <br />the lithologic composition of overburden based upon stratigraphic logging <br />of the site. The applicant also performed a sophisticated projection of <br />bulking factor for the overall overburden to be encountered. The pit <br />volume and swelled overburden volume, corrected for anticipated <br />consolidation and compaction, were compared in order to project reclaimed <br />backfilled topographic surface elevations. The applicant projects an <br />average overburden bulking factor of approximately 32%, which will result <br />in a rise in post-mining topography. The average post-mininy topographic <br />rise that is expected is 5.2 feet. In order to verify the applicant's <br />projection of post-mining topography, the Division deems it appropriate <br />to impose the following stipulation upon permit approval: <br />Stipulation No. 11 <br />THE DIVISIOIV DIRECTS THE PERMITTEE TO MONITOR THE TOPOGRAPHIC <br />CONFIGURATION OF THE MINE SITE, INCLUDING PIT, BOX CUT <br />OVERBURDEN STOCKPILES NNU THE BACKFILLED SURFACE OF THE MINED <br />AREA, IN ORDER TO VERIFY THE ACCURACY OF THEIR PROJECTION OF <br />OVERBURDEN SWELL ANU BULKING FACTORS. MUIVITORING FOR THIS <br />