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Table 1 <br />Aggregate Industries, Hazeltine Mine <br />Preliminary Engineer's Opinion of Costs to Construct the Orr Wetland Drain and Rundown <br />Structure <br />Item <br />Description <br />Estimated Costs - <br />Extension <br />Unit <br />Quantity <br />Unit <br />Price <br />1. <br />Mobilization/Demobilization <br />LS <br />1 <br />$4,000.00 <br />$4,000.00 <br />2. <br />Excavation <br />CY <br />80 <br />$15.00 <br />$1,200.00 <br />3. <br />Type ii Rip Rap Bedding <br />CY <br />70 <br />$33.50 <br />$2,345.00 <br />4. <br />Type M Buried Riprap <br />Tons <br />192 <br />$47.00 <br />$9,024.00 <br />5. <br />Concrete Headwall <br />CY <br />4 <br />$735.00 <br />$2,940.00 <br />6. <br />Demolition and <br />Reinstallation of Existing <br />Pipe <br />LS <br />1 <br />$4,000.00 <br />$4,000.00 <br />7. <br />Slurry Wall Repair <br />LS <br />1 <br />$5,000.00 <br />$5,000.00 <br />Estimated Sub Total <br />Estimated Base Cost of Project <br />$28,509.00 <br />Notes: <br />LS=Lump Sum <br />CY=cubic yards <br />NA=Not Applicable <br />Costs do not include the cost of engineering construction observation, <br />20% Contingency <br />$5,701.80 <br />Total Estimated Cost (Rounded <br />to Nearest $100) <br />$34,300.00 <br />LIMITATIONS <br />The EOC presented herein is developed from Tetra Tech's preliminary design dated July 7, 2015. <br />Topographic and subsurface conditions will vary. Use of other designs and/or varying topographic and <br />subsurface conditions may significantly alter the estimated costs portrayed herein. Changing conditions <br />and economic factors may change the conclusions of this memorandum. <br />P:'.23514\133-23514-15002\Docs\Estimates\Orr drain and rundown EOC Memo.docx <br />