2024-11-22_REVISION - M1999120 (4)

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Exhibit D MINING PLAN Existing Conditions. The methods described and approved in the original mining and reclamation plans for the Fort Lupton Sand and Gravel Mine (FLS&G) 1999 permit, and the 2012 amendment applications will remain unchanged unless discussed in this text. The Mining Plan described in the 2004 amendment will continue be used with the only change being the direction of mining. The other change is that mining will continue to the north into the newly added areas before moving to the southern end of the permit area. The future intent is to eventually remove the southern area from this permit into a new application that is being prepared. Map Exhibits C-Current Conditions, C-1-Mining Plan, C-2-Struc- tures and F-Reclamation Plan have been provided in this packet. In the 2012 amendment, LGE combined the Fort Lupton Sand and Gravel Mine (M-1999-120) with the Lupton Meadows Reservoir (M- 2002-104) and added 7 parcels north, south and west of the exist- ing mines. From that time until 2023 the mining Phases in the middle of the permit area have been mined and reclaimed. The area that has been released has created a 2-part mine as shown on the maps. The two (2) new areas to the permit boundary will increase the permit area by approximately 202.26 acres ±. EXHIBITC -CURRENT CONDITIONS MAP shows the area being added to the permit and will reflect any changes to the Mining and Reclamation Plan in the existing area. There is very little change to the south area reclamation plan for the existing area except some of the oil and gas facilities have been removed which will allow for an expan- sion of some of the future reservoirs shapes. Nineteen of the twenty mined areas shown on the maps will be slurry wall lined and developed as a series of water storage reservoirs ranging from 10.26 to 70.00 acres ±. The exceptions are the Deep Lake Phase that will be reclaimed as a pond and the southern end of the Sandstead Phase that will be backfilled with fines 2 feet above ground water and revegetated. The north end of the Sandstead Phase may become a lined reservoir. TABLED-I -MINING TIMETABLE on Page 2 is a list of the mining phases that will be referred to in the following text. This timetable has been updated to reflect changes to existing Phases. ExHIBITB-VICINrrYMAP shows the parcels that will be added while the Mining and Recla- mation Plan Maps show how the site will be developed. The total number of phases added to the Fort Lupton Sand & Gravel Mine is four and the new area will add approximately 7-15 years to the life to the mine. It is estimated by adding the new area, along with remaining reserves, that the life of the mine will be from 15 to 25 more years. This life span is subject to fluctuation depending on market conditions. The current bond for Ft. Lupton S&G is $2, 002, 400.00. The bonds include surety for 20, 134 feet of slurry wall and construc- tion of 16, 650 feet of bank sloping. At this time the applicant has a contract with the City of Aurora to develop 5 water storage reservoirs on the northern parcels of the property. This in- cludes 256.59 acres of the existing permit area, south of Weld L.G. Everist, Inc. M-1999-120 Ft.Lupton Sand and Gravel November,2024 3