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<br /> <br />Portland Limestone Quarries (M-1977-344) Permit Amendment-02 <br />Holcim US Inc, 3500 Highway 120, Florence, CO 81226 Revised pursuant to preliminary adequacy review November 20, 2023 <br />Phone (719) 288-1443 www.holcim.us 163 <br />2.12 Exhibit L: Reclamation Cost Estimate (Rule 6.4.12) <br /> <br />The bond estimate presented in this section includes reclamation cost estimates for Bear Creek Quarry, <br />the Plant Area and Red Creek Quarry. Bear Creek Quarry calculations are based on actual acres, 1326, <br />rather than the 1977 application acreage of 1539. Holcim commits to submitting a request for acreage <br />reduction to resolve this discrepancy soon after receipt of the Division’s decision regarding this <br />amendment application. <br /> <br />Bear Creek Quarry is in various stages of mining and reclamation. Table 2.1-1 is provided to present the <br />mining and reclamation progress of the various areas and acreage. The table corresponds to the color <br />coded areas in the Exhibits C2.1 series maps. <br /> <br />Table 2.1-1: Bear Creek Quarry Mining and Reclamation Progress <br /> <br /> <br />Disturbed Acres Description Acres <br />1 No disturbance. Future mining 124.37 <br />2 Top soiled. Ready for seeding 54.00 <br />3 Top soiled. Ready for seeding 205.04 <br />4 Released 1990 51.47 <br />5 Native ground that will not be mined 106.59 <br />6 No disturbance. Future mining 198.24 <br />7 Current quarry 208.97 <br />8 Stockpile area 82.15 <br />9 Top soiled. Ready for seeding 138.93 <br /> <br />Subtotal of mining disturbance and <br />contemporaneous reclamation 1169.76 <br />10 Interior access and haul roads. 157.13 <br />11 Plant 4.53 <br /> BCQ acreage based on current surveys and maps 1,326.89 <br />12 <br />Future acreage reduction due to error on old <br />maps. For grading 207.84 <br /> BCQ Permit (11/17/2023) 1,539.26 <br /> <br />