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Holcim South Platte Combined SWSP September 18, 2025 <br /> Plan IDs 3614, 4773, 3624, 4772, 4616, 3437, 3376, 3650, 3668, 5475, 5829, Ft 6243 Page 18 of <br /> 37 <br /> cfs of fully consumable water every day of each year (averaging 16.89 acre-feet per month) <br /> and an additional 0.17 cfs every day from October 1 to June 30 during each year (averaging <br /> 10.25 acre-feet per month) at the outfall of the Metro Wastewater Treatment Plant. The <br /> lease provides 294.79 acre-feet annually, of which 265.24 acre-feet are anticipated to be <br /> utilized in this SWSP. (The remaining 29.55 acre-feet are reserved for use in case no. <br /> 2007CW 198.) <br /> City of Aurora Lease <br /> The January 10, 2022 lease with the City of Aurora and Stillwater Lake Ranch LLC is an <br /> agreement that provides reusable raw water for Aggregate Industries and Stillwater Lake <br /> Ranch LLC. The original term of the lease was from December 1, 2021 through November 30, <br /> 2022 with the allowance for one-year extensions through November 30, 2027. A copy of a <br /> letter confirming the City of Aurora's agreement to extend the lease for January 1, 2025 <br /> through December 31, 2025 is attached. The letter confirms the City of Aurora's intent to <br /> provide 158 acre-feet of reusable raw water from January 1, 2025 through December 31, <br /> 2025. <br /> Under the lease, water will be delivered to the outfall of the Robert W. Hite Treatment <br /> Facility (aka Metro Sewer, WDID 0200700) located on the South Platte River. Aurora may <br /> alternatively deliver water at other points along a reach of the South Platte River beginning <br /> at or below the Hite Treatment Facility extending downstream to a point at or above the <br /> Lupton Bottom Ditch headgate. The point of depletion is downstream of the Lupton Bottom <br /> Ditch headgate. The Applicant must notify the Water Commissioner at least 48 hours prior to <br /> making replacement deliveries at a location other than the Hite Treatment Facility. <br /> Thornton Lease <br /> Holcim has a perpetual lease of 10.53 acre-feet of fully consumable effluent from the City of <br /> Thornton, which will be released from the Metro Wastewater Treatment Plant at a rate of <br /> 0.035 cfs daily from November 15t through March 315t <br /> Fulton Ditch <br /> Holcim owns a total of 96 shares in the Fulton Ditch Company, consisting of 62 shares <br /> obtained from Cooley Gravel, 22 shares from CAMAS, 6 shares from C&tM Aggregates, and 6 <br /> shares from Hill &t Peterson. For 2024, Holcim intends to utilize their 62 Cooley Gravel and <br /> 22 CAMAS shares for replacement under this SWSP. (The 6 C&tM Aggregates shares and 6 Hill <br /> &t Peterson shares will be leased to others for irrigation purposes.) <br /> Prior to 1977, the 62 Cooley Gravel shares were used in two blocks: 30 of the shares were <br /> owned by the Montandon Trust and used for the irrigation of 48.7 acres, and 32 shares were <br /> owned by the Palombos and used for the irrigation of 31.1 acres. The shares were purchased <br />