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Closure Cost Estimate <br /> Material Costs <br /> Project Name: REX Exploration Montrose County Colorado-Notice or Exploration <br /> Date of Submittal: December 2022 <br /> File Name: REX_NOI_SRCE_Ver_1_4_1_017_NVb.xlsm <br /> Model Version: Version 1.4.1 <br /> Cost Data: User Data <br /> Cost Data File: 20220801_SRCE_Cost_Data_File_1_12_Std_2022.xism <br /> Cost Estimate Type: Surety Cost Basis: N. Nevada Notice Level <br /> Well Abandonment Materials <br /> Description 7CosU50lb bag Units Cost/unit* <br /> Cement $8.11 c $38.63 <br /> Grout Low Grade Bentonite $9.95 c $47.38 <br /> Inert Material/Cuttings cy <br /> c <br /> cy <br /> 1 Jentech Drilling Supply uote 2022 Type 1,11 Cement at$15.25 per 94 lb.bag <br /> 2 Jentech Drilling Supply 2022 3/8 in.Chunk Bentonite Hole Plug at$9.95 per 50 lb.bag 5.75 cf/bag at 43 gall <br /> Assumes 1 bag mixes with water to make 0.21 y3 or 0.16 m3 of grout/cement slurry. <br /> Monitoring Costs <br /> Description Units Cost/unit <br /> Monitor Well Pump ea. $3,050.81 <br /> Sampling Supplies ea. $7.13 <br /> Water Analysis Profile I 1 ea. $411.00 <br /> Leach Test MWMP w/analysis ea. $483.40 <br /> ABA+S s eciation ea. $157.00 <br /> WAD Cyanide in water ea. $61.00 <br /> Water Analysis Profile II 1 ea. $461.00 <br /> ea. <br /> ea. <br /> ea. <br /> ea. <br /> ea. <br /> ea. <br /> ea, <br /> ea. <br /> ea. <br /> ea. <br /> 1 WET Lab, Reno, Nevada 2022 <br /> Well pump and Sample supply costs adjusted to 2022. <br /> Original source unknown. <br /> 3/2/2023 <br /> copynS.c e 2004-110 21 of 56 Material Costs <br /> SRCE Software..All RighLe Reurved <br />