2023-02-16_HYDROLOGY - M2000158 - Laserfiche WebLink

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David M. Heintz S Ft H Mine SWSP February 16, 2023 Page 5 of 11 approved by the division engineer and the water commissioner prior to use of the water from the Greeley 35th Avenue Reservoir. City of Greeley Effluent Under this SWSP, MMM requests to use any excess fully consumable water leased from the City of Greeley ("Greeley") not required for replacement purposes in the MMM's SWSP for the Greeley 35th Avenue Pit (WDID 0302546). MMM's predecessor, Lafarge West, Inc., traded its 550 Boyd and Freeman Ditch shares for 125 acre-feet of augmentation water from Greeley. MMM acquired this lease from Lafarge, as part of their acquisition of the Greeley 35th Ave Pit. The lease allows MMM to use this water to cover depletions at Greeley 35th Ave Pit and surrounding land. A copy of the lease has been provided to this office. To the extent that excess fully consumable water is available, the leased replacement water may also be used to replace depletions at SFkG Mine. Replacements using the excess Greeley effluent would be delivered to the South Platte River at the confluence of the South Platte River and Cache La Poudre River. Under the lease agreement Greeley can deliver the effluent water to a number of locations on the Cache La Poudre River. The Applicant is required to coordinate with the water commissioner the delivery location of replacement water to ensure out-of-priority depletions are adequately replaced to prevent injury to other water rights. Excess fully consumable water leased from Greeley cannot be used for replacement of depletions at SFtG Mine without prior approval from the water commissioner. The Greeley effluent may only be used for replacement of depletions at the SFkG Mine if the calling water right is downstream of the confluence of the Cache La Poudre River and the South Platte River and intervening water rights between the SFkG Mine and the Cache La Poudre River would not otherwise be injured by the downstream replacement. The Applicant must account for any transit loss from the point of release of replacement water to the confluence of the Cache La Poudre River and the South Platte River. Conveyance loss for delivery of augmentation water is subject to assessment and modification as determined by the water commissioner or division engineer. City of Aurora Effluent MMM has an agreement with the City of Aurora ("Aurora") for up 249 acre-feet for use in the MMM's South Platte Combined SWSP. The reusable effluent is delivered from the Metropolitan Waste Water Treatment Plant (`MWWTP") (WDID 0200700) to the South Platte River. When the Aurora effluent deliveries are in excess of what is needed to replace depletions at the South Platte Combined Sites, MMM requests the ability to use the excess credit for replacement of depletions at the SFkG Mine. The applicant will account for a transit loss of 0.5% per mile from the MWWTP to the point of replacement at the SFkG Mine of approximately 42.5 miles. Based on the assumed transit loss rate of 0.5% per mile, the total transit loss for Aurora effluent replacements to the South Platte is approximately 21.25%. Conveyance loss for delivery of augmentation water is subject to assessment and modification as determined by the water commissioner or division engineer. The Applicant would have to obtain permission from the District 2 water commissioners to verify Aurora water can make it past any dry up locations between MWWTP to the point of replacement at the S&tG Mine.