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Shell Frontier Oil & Gas Inc. <br />FINANCIAL WARRANTY CALCULATION <br />REVEGETATION <br />Site East RD &D Pilot Project Date July 12, 2011 Task no. 8b <br />Task Revegetate mid -slope community (est. 70% of 9.52 ac. site disturbed area = 6.66 ac.) Using BLM Native Seed Mix <br />No. 2 with modifications. <br />Fertilizing <br />Tilling <br />Seed application <br />Seed mix <br />(alt. for Hood's phlox) <br />(Fremont's not avail.) <br />Mulching <br />Method: Broadcast seeding Total /acre: $257.40 <br />Species <br />Rate - PLS <br />Ibs /acre* <br />Native or <br />Introduced <br />Warm or <br />Cool S. <br />Seeds/sq. ft.* <br />Cost PLS /acre* <br />Western Wheat grass - Rosanna <br />2.00 <br />Native <br />Cool <br />5.97 <br />$6.00 <br />Indian Rice grass - Rimrock <br />1.00 <br />Native <br />Cool <br />3.24 <br />$6.00 <br />Blusbunch Wheat grass - Secar <br />2.00 <br />Native <br />Cool <br />6.43 <br />$16.20 <br />Thlcks ike Wheat grass - Critana <br />2.00 <br />Native <br />Cool <br />7.07 <br />$8.30 <br />Needle grass, Green - Lodorm <br />1.00 <br />Native <br />Cool <br />4.16 <br />$3.00 <br />Globemallow, Desert <br />0.50 <br />Native <br />NA <br />9.18 <br />$30.99 <br />June grass <br />1.00 <br />Native <br />Cool <br />52.80 <br />$36.00 <br />Prostrate alfalfa (Truvois) Pre -moc. <br />2.00 <br />na <br />na <br />9.64 <br />$8.30 <br />Penstemon, Rocky Mountain <br />1.00 <br />Native <br />NA <br />15.67 <br />$22.00 <br />Sagebrush, Wyoming Big <br />2.00 <br />Native <br />NA <br />118.27 <br />$72.00 <br />Snakeweed <br />1.00 <br />Native <br />NA <br />21.81 <br />$91.44 <br />Rabbitbrush, Rubber <br />1.00 <br />Native <br />NA <br />14.90 <br />$52.00 <br />I oial /acre: l U_DU Zb`l.14 Z�/U4.4b <br />Seeding rate, seeds/sq. ft. & item cost listed on drill seeding basis. Total cost/acre doubled it non -drill seeding method used. <br />Nursery stock <br />Weed control <br />Materials: <br />Application: <br />Production <br />Description <br />Plants /acre <br />Stock type & size <br />Mat. $ <br />Planting $ <br />cost/acre <br />None <br />loiavacre: u <br />loiavacre: Z�U.UU <br />Estimated no. acres /hour: 0.50 <br />Job hours - 1 crew basis: 13.32 No. crews: 2 job hours: 6.66 <br />Job totals Number of acres: 6.66 L;ost/acre: $1,694.34 Initial job cost: $11,284.30 <br />Estimated failure rate: 20% Cost /acre: $1,694.34 Replanting cost: $2,256.86 <br />Replanting work items: Fertilizer, tilling, seeding, mulching, weed control Total job cost: $13,541 <br />P- 2010 -026 bondcalc 01 a Page 13 of 17 <br />