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EXHIBIT L — Reclamation Costs <br /> Based on worse-case in first ten years of operations, which occurs at year 7 (2028). <br /> MAXIMUM SITUATION YR 1-5 Backfill to final grade Finish grading Place topsoil Seed Reseed maintain TOTAL <br /> Years 2022-2023 06 21 6 16.1 16.1 16.1 21 6 <br /> Year 2024 0.6 50 50 5.0 5.0 5 <br /> Year 2025 06 5.0 5.0 5.0 5.0 5 <br /> Year 2026 06 50 5.0 5.0 5.0 5 <br /> Year 2027 06 50 5.0 5.0 5.0 5 <br /> West of Oakbrush Hill Crest(road 00 05 0 0 0 05 <br /> Total 29 421 36 1 361 36.1 421 <br /> ESTIMATED COST PER ACRE $8,276 $6,081 $34,399 $23,465 $5,866 $78,087 Total unit costs <br /> BACKFILL $7,809 Mobilization(10%) <br /> Length of highwalls,ft max 800 $2,397 Overhead(3.07%) <br /> Height of highwalls,ft avg 20 $4,000 Supervision(80 hrs) <br /> Volume of h/w,CY in place 5926 $92,293 Contract price <br /> Swell factor 1.33 $500 Warranty process <br /> Total loose Backfill 7881 $3,922 Engineering <br /> Push distance 40 $4,615 Administration <br /> Gradient -30% $101,330 TOTAL BOND <br /> Unit prod(D9R)(CY/Hr) 200 <br /> Unit hourly cost $210 <br /> Unit hours 39.4 <br /> Unit cost $8,276 <br /> FINISH GRADING <br /> Hourly prod(grader)A/hr 0.9 <br /> Unit hourly cost $130 <br /> Unit hours 468 <br /> Unit cost $6,081 <br /> PLACE TOPSOIL <br /> Topsoil depth 12" <br /> Placed topsoil vol(CY/acre) 1,613 <br /> Total placed topsoil 58241 <br /> Swell factor 1.125 <br /> Total loose topsoil 65,522 <br /> Unit prod(D9R)(CY/Hr) 400 <br /> Unit hourly cost $210 <br /> Unit hours 163.8 <br /> Unit cost $34 399 <br /> FERT,TILL,SEED MULCH <br /> Cost per acre(incl equipt) $650 <br /> Unit cost $23 465 <br /> RESEED <br /> Cost per acre(25%failure) $650 <br /> Unit cost $5,866 <br /> 2021 cost data; no inflation factor added. <br /> This is a preliminary estimated and must be reviewed and approved by DRMS at the time of <br /> approval of the Application. At that time, DRMS will finalize the amount of the financial warranty <br /> and the operator will post that amount, in a manner acceptable to the State. DRMS DOES <br /> coordinate both with the County and the local Conservation District before releasing any <br /> reclaimed land or financial warranty. <br /> C&J Gravel Products, Inc. Page 52 of 93 20 OCT 2021 <br /> Application for Permit: Oakbrush Hill Gravel M-2021- C&J-DPR-V5-001 <br />