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Holcim South Platte Combined SWSP September 18, 2025 Plan IDs 3614, 4773, 3624, 4772, 4616, 3437, 3376, 3650, 3668, 5475, 5829, Ft 6243 Page 2 of 37 Platte 9 Hazeltine Pit South Platte M-2004-031 020303 63224-F No 0 Brighton Pit South M-1977-436 020303 56993-F No 1.0 Platte 1 Tucson South South M-2004-044 020303 81342-F No 3.0 Pit Platte 2 Wattenberg South M-2004-051 020303 78627-F No 17.0 Pit Platte 4 Platte Valley South 020303 Pit Platte M-1989-120 78626-F No 56.0 5 DPG Pit South M-2019-028 030792 85654-F No 16.0 Platte 4 Distel Pit St. Wain M-1989-029 050300 67433-F Ft No N/Ac 0 76960-F Tull Pit St. Wain M-1994-027 060300 74831-F No 4.0 Irwin-Thomas St. Wain M-2016-054 0050562 88168-F No 2.5 it 6 W.W. Farms Lower M-1999-098 030301 76207-F No 64.0 Pit Poudre 4 F-Street Pit Loudre M-1992-069 030301 67989-F No 37.2 a The Jeronimus Pit was added to the M-1999-034 permit (historically referred to as the "Fulton Lakes Pit") via an amendment approved by the DRMS on July 8, 2003. The Applicant had completed mining at the Fulton Lakes Pit and reclamation of the site and ownership was transferred to the City of Thornton. The only consumptive use of water under DRMS permit no. M-1999-034 is associated with the Jeronimus Pit. b 5.6 acres exposed after December 31, 1980 and 14.7 acres exposed prior to January 1, 1981. The City of Longmont has assumed the augmentation responsibilities for lagged and future depletions from evaporation and consumptive use by wetlands vegetation at this site under their plan for augmentation decreed in case no. 09CW271. The general location for each of the mining sites is identified in Table B below and depicted on the attached "Figure 1—Aggregate Industries Combined SSP Vicinity Map". Table B - Pit Locations Site Name Location Jeronimus Pit Section 16, T2S, R67W