2009-04-29_HYDROLOGY - M2001001 - Laserfiche WebLink

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Kimberly K. Frick Page 2 April 28, 2009 • Specific yield of 0.2 (typical of alluvial aquifer) The lagged depletions are provided in Table 2, "2009 Total Depletions". Depletions associated with lagged dewatering are shown in Table 4. REPLACEMENTS The replacement water provided in this plan is from the consumptive use credits associated with dry-up of 38 acres of lands that have previously been irrigated by the Home Ditch and from a lease with the Dolores Water Conservancy District for 6.59 acre- feet of replacement water. The consumption, lagged depletions,.CU credits generated from dry-up, lagged dewatering depletions and monthly requirements for leased replacement water are shown on your attached Table 4, Estimated Replacement Schedule. Monthly releases of leased water may be aggregated for release at the discretion of the Water Commissioner. CONDITIONS OF APPROVAL This substitute water supply plan is hereby approved pursuant to CR.S. § 37-90- 137(11), subject to the following conditions: This plan is valid through April 30, 2010, unless otherwise revoked or modified. 2. This substitute water supply plan may be revoked or modified at any time should it be determined that injury to other water rights has or will occur as a result of this plan. 3. If this plan will not be made absolute by a water court action by the plan's expiration date, an extension request must be submitted to this office at least 45 days prior to the expiration date of this plan (by March 16, 2010). Thereafter, annual renewals must be submitted to this office with the statutory fee of $257, unless the plan is made absolute in that year by a water court action. 4. A new contract with Dolores Water Conservancy District showing the increased amount of water to be leased must be submitted to this office within 3 weeks of the date of this letter. 5. The exposed surface area may not exceed 4.1 acres and water consumed by operations associated with this mining operation must not exceed those identified on Table 2 unless a prior amendment is approved by this office. 6. Approval of this plan is for the purposes as stated herein. Any additional uses for this water must first be approved by this office. 7. All pumping for dust control shall be measured in a manner acceptable to the Division Engineer. 8. Adequate accounting of depletions and replacements (in acre-feet) must be provided to the Water Commissioner and Division Engineer on forms and at times acceptable to both of them. The accounting form(s) shall be sufficient to