Laserfiche WebLink
S1cmo to f{rica Crosby 4 June I. ?un(, <br />Gcotechnical Adequacy Review Pcnnit \u ~1.IyS-;-Ii,S <br />4. highwall design. <br />a. "I'hc Operator proposes an observational method for the dcvclopmcnt of highwalls in the <br />yuartritc forntation to the west of the marble deposit. 'this is acceptable to the I)~iG. <br />Itowcvcr, the dcvclopmcnt of the observational method must be further described to <br />assure that the D~1G can provide sutlicicnt regulatory Deer site of this process. 'I'hc <br />Operator must commit to creating a separate section in each annual reclamation report <br />that describes gwtcxhnical observations and tests conducted over the previous year and <br />reports on the design and constn+ction of highwalls and benches based on the <br />gcotechnir+l work. <br />b. Exhibit Cd to the com•crsion application is a cross section ol'the proposed highwall <br />bench system. This cross section must be malified for completeness by illustrating the <br />full highwall on the cast side. <br />c. -fhe conversion application Discusses backtilling ofplayed out areas o(the quarry with <br />waste rcx;k. "fhe Operator's representative, qtr. Kcn Klco, clarilicd during the J1ay 2G, <br />20116 site inspection that any such backtilling will be done to lolly buttress the highwall <br />hatch systcrn. In other words, waste rock backtilling will be subject to the same <br />maximum ?Ii: I V out slope angle as waste piles constructed outside the pit. A written <br />statement to this cfTcct must be provided. <br />5. During the stay 26, _'l)(Xi inspection backtilling and reclamation of a section ol'yuarry access <br />road located on land owned by Colorado L.inte was discussed. DMG suggested that this <br />backtilling project should be done by placement and compaction ofprogressive thin lids of <br />waste rock suitable for use as stn+ctural lilt. Pine-gr.+inctl light colored waste ruck that is <br />prevalent at the quarry is not suitable. 'fhe Open+wr must provide a brief de~acription of the <br />proposed road cut backtilling project- <br />cc: Carl Mount, DMC; (riu cnutib <br />13n+cc llumphrics, D~1{i (rur enntill <br />c Nhrumttuv and Cctung.acv\ty ITucumrnb~hlly mmv cn-0I geutaft rcv~cw.dut <br />