Laserfiche WebLink
Mr. Kevin Rein <br />Office of the State Engineer <br />Page 1 <br />September 8, 2023 <br /> <br />DRAFT <br />Letter Report <br /> <br /> <br />Mr. Kevin Rein <br />Office of the State Engineer <br />1313 Sherman, Suite 821 <br />Denver, CO 80203 <br /> <br />Subject: Request for Substitute Water Supply Plan – Holcim Red Creek Quarry, <br />Florence, Colorado <br /> <br />Dear Mr. Rein: <br />On behalf of Holcim (US), Inc., Brown and Caldwell (BC) is requesting approval of a Sub- <br />stitute Water Supply Plan (SWSP) for calendar year 2025 for the planned Holcim Red <br />Creek Quarry (RCQ), located in Florence, Colorado. Holcim will be moving its limestone <br />mining operations to RCQ and will be amending its augmentation plan decreed in Case <br />No. 16CW3102 to replace out-of-priority depletions associated with mining operations at <br />the new site. <br />The replacement supplies for potential depletions in 2025 will continue to be a long- <br />term lease of fully consumable water from Pueblo Board of Water Works (PBWW), which <br />is currently being used to cover depletions at the Bear Creek quarry, pursuant to the <br />Holcim augmentation plan decreed in Case No. 16CW3102. The purpose of this letter <br />report is to describe out-of-priority depletions projected to occur in 2025 from RCQ oper- <br />ations, and the planned replacement supply to cover those depletions. <br />Project Description <br />Holcim is pursuing an amendment to its current mining permit to include a new lime- <br />stone resource located in both Fremont County and Pueblo County, known as the Red <br />Creek Quarry (see Figure 1). Activities associated with this new quarry include surface <br />mining, preliminary material sizing, material conveyance from the quarry to the existing <br />cement plant and reclamation. <br />Site development including construction of the conveyor corridor and access haul road <br />from RCQ to the plant will begin soon after approval from the Mined Land Reclamation <br />Board (MLRB). Construction activities are anticipated to take two years. Preliminary <br />mine development will begin after the interior haul road is passable. During mine devel- <br />opment and during mining, plant growth material will be salvaged in stockpiles and sta- <br />bilized for use during final reclamation. <br />Once construction is complete, production mining will be carried out over seven days per <br />week, with a targeted mining rate of 10,000 tons per day. Limestone will be mined from <br />the working face, processed through preliminary sizing plant in the mine pit, then con- <br />veyed to the secondary sizing plant to be located in the northwest corner of Section 24. <br />Sized material will be transferred to the overland conveyor system and transported to <br />the cement plant. The completely developed mine will mine and process approximately <br />3.2M tons of limestone annually.