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Mineseal <br /> Mineseal <br /> Adit closure - bulkhead seal, >=36 sq.ft. (per sq.ft.) <br /> Year Unit Cost/SF ($) Change (%) <br /> 2018 153.34 - <br /> 2019 171.6667 11.95% <br /> 2020 171.6667 0.00% <br /> 2021 TBD - <br /> Adit closure -backfilling (per opening) <br /> Year Unit Cost/Opening ($) Change (%) <br /> 2018 - - <br /> 2019 2105.3 0.00% <br /> 2020 2105.3 0.00% <br /> 2021 TBD - <br /> • Mineseal tasks are based on averaged bid costs from the Division's IMP. Some numbers could <br /> not be found for previous years and I have not received the new costs for 2021 as of yet. <br /> If you have any questions, feel free to contact me. <br /> Sincerely, <br /> Zach Trujillo <br /> Environmental Protection Specialist <br /> (303) 866-3567 ext. 8164 <br /> Zach.Trujillo@state.co.us <br /> Questions Related to Reclamation Cost Estimate(RCE)Memo February 19,2021 <br />