Laserfiche WebLink
1))i Loveland Ready-Mix Concrete, Inc. <br /> NW 0 ter M1974-069 April 6, 2020 <br /> L OVELAN D Inspection Report Status Update; additional backfill is not required to meet <br /> the intent of the Reclamation Plan. <br /> R EADYMIX Cell/Pits 5 and 6 <br /> CONCRETE1. Cells 5 and 6 operated as silt settling ponds up until the completion of Cell 20. <br /> No further activity is planned for these mining cells. <br /> 2. Cell 5 was identified for augmentation under W-7412 with a projected final <br /> PO BOX 299 water surface area of 3.39 acres. The current exposed area of 2.75 is less than <br /> LOVELAND, CO 80539 allowed so no backfilling of this cell is required. <br /> 3. Cell 6 was identified for augmentation under W-7412 with a projected final <br /> OFFICE 970.667.2680 water surface area of 2.27 acres. Cell 6 is essentially silted in with some limited <br /> FAX 970.667.0092 water exposure around the perimeter trenching so no backfilling of this cell is <br /> required. <br /> 4. The Task Costs 10, 11, 13, and 14 provided in the Division's March 24th, 2020 <br /> Inspection Report Status Update account for additional topsoil and <br /> revegetation in Cells 5 and 6 that will be sufficient to insure these areas are <br /> reclaimed to meet the overall strategy and intent of the Reclamation Plan. <br /> Augmentation of Exposed Water Surfaces <br /> 1. Water loss from evaporative depletions for all mining cells with exposed water <br /> surfaces both within the permit boundary and in mining cells previously <br /> released from the mining permit boundary are covered either as pre 1980 <br /> mining or in the State approved augmentation plans 00CW142 and W-7412. <br /> 2. 00CW142 acknowledges that mining operations are ongoing at the Larimer <br /> Pits. Paragraph 14.3.1 allows for"Up to 52.29 acres of ground water surface <br /> area were, or will be, exposed to the atmosphere by mining the Larimer Pits <br /> 13,14,15,18, and 20 resulting in net evaporation averaging 109.24 acre-feet <br /> per year".The attached Figure 1, prepared by BBA Water Consultants, shows <br /> the exposed surface area for all exposed water in Cells 13, 14, 15, 18, and 20, <br /> that are augmented under 00CW142. Their respective areas are as follows: <br /> Cell/Pit No. Area Exposed Status <br /> Water Surface <br /> 13 15.5 acres Reclaimed and released <br /> 14 13.5 acres Backfilling/Reclaiming <br /> 15 5.9 acres Reclaimed and released <br /> 18 0.3 acres Substantially reclaimed <br /> 20 8.5 acres Reclaiming <br /> Total Exposed 43.7 acres Less than 52.29 allowed <br /> 3. The current Well Permit 69035-F allows for"an additional 12.02 acres to be <br /> exposed at the Larimer Pit within pond nos. 18 and 20." It also references the <br /> total surface area of the gravel pit ground water pond nos. 13, 14, 15, 18, and <br /> 20 limited to 52.29 acres exposed. <br /> 31 <br />