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In Attachment G-4 is a copy of the Iversons' stock certificate from The Greeley Irrigation Company <br />(GIC) showing that the Iversons currently have 6 '/4 shares of water. Pursuant to the findings of <br />Case No. 96CW658 (commonly known as the "Poudre Prairie Decree"), one GIC share provides <br />approximately 10.31 acre-feet of consumptive use per year on average, which can be used to <br />provide replacements for the mining and post-reclamation depletions at the site. The Iversons' 6 '/4 <br />GIC shares would therefore be expected to provide approximately 64.44 ac-ft of replacement credit <br />per year on average. This water is delivered during the irrigation season, typically April to October. <br />If the water is not stored or recharged during the time of delivery, then the shares are only capable <br />of providing replacement credit during the irrigation season. <br />During mining operations, the 6 '/4 GIC shares is more than sufficient to offset irrigation season <br />depletions. At this time, there are no plans for storage or recharge of the GIC shares; therefore in <br />order to replace non-irrigation season depletions (typically November to March) the Iversons will <br />need to obtain temporary or perpetual leases of augmentation water from a provider in the area. <br />After reclamation, irrigation season depletions will exceed the replacement credit available from the <br />Iversons' 6 '/4 GIC shares; at least 42.20 ac-ft of additional augmentation water will be required to <br />meet irrigation season depletions. Prior to the start of mining, the Iversons will acquire the <br />additional water necessary to augment this operation during the life of the mine. The Iversons will <br />also obtain approval of a permanent augmentation plan for the property to support the proposed <br />Reclamation Plan for the property. <br />First-fill depletions, estimated to be approximately 1,066 ac-ft, can be replaced through a temporary <br />lease. Alternatively, due to the close proximity of the proposed pond to the Cache la Poudre River, <br />Lafarge may avoid out-of-priority depletions by strategically turning off the dewatering pumps at <br />the beginning of a sufficiently long free river period; this would allow the pit to fill at a time when <br />no downstream water users would be injured and therefore no augmentation water would be owed. <br />Lafarge understands that this technique requires that depletions from the reclaimed pond be <br />considered instantaneous; therefore, if this technique is used, they will coordinate with the Colorado <br />Division of Water Resources in advance to ensure that the pit depletions are administered in this <br />fashion. <br />Attachments <br />G-1: Groundwater Monitoring and Mitigation Plan <br />G-2: Stormwater Management Plan <br />G-3: Augmentation Water Estimate <br />G-4: The Greeley Irrigation Company Stock Certificate <br />Iverson Mine <br />DRMS 112 Reclamation Permit Application <br />Page G3 of G3