2012-12-26_HYDROLOGY - M2003091 - Laserfiche WebLink

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Mr. Heintz & Ms. Wynne Duckworth SWSP December 24, 2012 Page 5 of 7 surety amount of the required surety amount of $1,603,000 which can be used to eliminate long term augmentation requirements by lining or backfilling the site should the pit operator or land owner fail to obtain a sufficient augmentation plan after mining operations are complete. Conditions of Approval hereby approve this substitute water supply plan, in accordance with Section 37 -90- 137(11), C.R.S., subject to the following conditions: 1. This SWSP shall be valid for the period of November 1, 2012 through October 31, 2013, unless otherwise revoked, modified, or superseded by decree. A SWSP renewal request must be submitted to this office with the statutory fee (currently $257) by August 31, 2013. 2. Well permit no. 63541 -F was obtained for the Duckworth Pit but since mining did not occur and groundwater was not exposed, the well permit expired. A new well permit application was submitted for the current use and exposed pond surface area of the gravel pit in accordance with §37 -90- 137(2) and (11), C.R.S., and is currently pending under receipt no. 3656977. Should this permit be denied for reasons of 600 foot spacing, or any other legitimate reason, approval of this SWSP may be cancelled. 3. The total surface area of the groundwater exposed at the site must not exceed 0.45 acres during the approval period of this SWSP, resulting in evaporative losses of 1.15 acre -feet for this plan period. 4. The total amount of water used for dust control at the site must not exceed 7.94 acre - feet. All pumping for dust control shall be measured with a totalizing flow meter to the satisfaction of the Division Engineer. 5. The total amount of water lost in aggregate production at the site must not exceed 5.37 acre -feet. 6. Total consumption at the site must not exceed the aforementioned amounts unless an amendment is made to this plan. 7. Approval of this plan is for the purposes as stated herein. Any additional uses of this water must first be approved by this office. 8. All releases of replacement water must be sufficient to cover all out -of- priority depletions in time, place, and amount and must be made under the direction and /or the approval of the water commissioner. The release of replacement water may be aggregated to maximize beneficial use. The water commissioner and /or the division engineer shall determine the rate and timing of an aggregated release. 9. Dewatering operations must be measured by totalizing flow meters that can accurately show the monthly volume of water dewatered into the Lighthouse Cove Pond ( "LCP ") and into the Smith & Emmons ditch. The Smith & Emmons ditch must measure the dewatering water diverted directly back to the river. Any dewatering water placed into LCP cannot be used for irrigation or any other purpose by Lighthouse Cove Development or others, and must be allowed to accrete to the stream. The provision in the SWSP allowing LCP to be used as a recharge pond may not be continued in SWSP renewals should it be determined by the water commissioner or division engineer that water within LCP is being diverted for use and accounting is not adequate to show the recharge of dewatering is occurring.