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<br />• <br /> <br />Conswct steel platform and decking <br />Conswct steel platform - 6 if x $18.88/lf $ 113 <br />Install strapping - 661E x $18.88/1£ 1,246 <br />Mesh overlay - 12.6 sf x $4.29/sf 54 <br />FRP concrete (2' thick, 8000 psi. pumped) - 2(1 cy x $(83.00 +12.44 + 5.85)/cy) 202 <br />13acldlling - 1.4cy x $3.50/cy 5 <br />Subtotal $ 1,620 <br />Prior cost for sealing from pg 60a of Appendix A, Vol 1-A $56,900 <br />This gives a credit for shaft sealing of 555,280 <br />EMD Ventilation Boreholes <br />Assumptions: 1) Intake shaft 5' diameter <br />2) Exhaust shaft 4' diameter <br />3) suspend decking 10' below grade <br />Construct steel platform and decking: (5' diameter intake shaft) <br />Construct steel platform - 11 if x $18.88/!£ $ 208 <br />Install strapping - 66 If x $18.88/1£ I ,246 <br />Mesh Overlay - 19.6 sf x $4.29/sf 84 <br />FRP concrete (2' thick, 8000 psi, pumped) - 2(1.5 cY x $(83.00+12.44+5.85)/cy) 304 <br />13ac13illing - I.5 cY x $3.50 7 <br />$ 3,317 <br />Costs for 4' diameter exhaust shaft same as for No. 7 North Escape Shaft $ 1,620 <br />Prior rnsts for sealing from pg 64(b) of Appendix A, Vol 1-A $54,058 <br />This gives a credit for shaft sealing of $50,058 <br />Indirect and Administrative Costs (8%) -for vier removal only at Prey Plant $ 848 <br />AP~,..dr,~ /3 P . 9 (o <br />