2013-05-30_HYDROLOGY - M1983090 - Laserfiche WebLink

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Mr. Andy Rodriguez Poudre Pits Aggregate Mine SWSP May 29, 2013 Page 5 The 13 shares will be diverted at the Tigges farm headgate and measured at the augmentation station. All measurements must be made and recorded to the satisfaction of the water commissioner. During months where the projected diversions will exceed the mining and operational depletions and the monthly return flow attributed to these shares, the excess water will be diverted into an unlined pit where it will recharge the ground water and create lagged accretions. It is projected that this will occur from May through August with a net amount of 90.43 acre -feet being recharged. The recharge will be lagged to the river using the same parameters as the Tigges depletions and will result in a lagged accretion of 42.74 acre -feet during this approval period. The 13 Rural Ditch shares are insufficient to provide replacement during the months of January through April, and again from October through December. To cover these months the Applicant has obtained leases with the City of Aurora ( "Aurora "), Varra Companies ( "Varra "), and the Groundwater Management Subdistrict ( "GMS ") of the Central Colorado Water Conservancy District. The Applicant has a lease with Aurora to provide fully consumable water for their Brighton Combined Gravel Pit SWSP (WDID 0202587) and Shores Gravel Pit SWSP (WDID 0502522). Aurora approved releasing an additional 9.81 acre -feet in January and 7.79 acre -feet in February on this lease on behalf of this SWSP. This water is released from the Metro Waste Water Treatment Plant (WDID 0200700) and is assessed a transit loss of 25.5% to account for 51 stream miles at 0.5% per mile loss. The Applicant also entered into a lease with Varra Companies for the months of January through March 2013. Releases will be made from water stored in Varra's 112 Reservoir (WDID 0504001), Dakolios East Reservoir (WDID 0504003) or their Von Ohlen Reservoir (WDID 0504002). This water was stored during free river from September 2009 through June 2010. According to information submitted by Varra, at the beginning of January 2013, there was 1,446 acre -feet stored in these reservoirs. Varra has included this lease on their Reservoir Operations Study. Water from these reservoirs is also used in Varra's SWSPs with WDIDs 0502513 & 0302535. Varra will release this water into a ditch that terminates into the St. Vrain River. All measurements must be made to the satisfaction of the water commissioner. During the non - irrigation season the water will be available to make replacements at the Cache la Poudre's confluence with the South Platte River. A transit loss of 0.5 % per mile for 33 miles will be assessed for all released made by Varra. During the non - irrigation season there is not a calling right on the Poudre river between the Poudre Pits and the confluence with the South Platte River. With the leases from Aurora and Varra, additional water is still needed during the months of January through March. To make this plan whole during these months the Applicant is utilizing excess credits from their Shores Gravel Pit SWSP (WDID 0502522). Submitted April 2013 accounting for the Shores SWSP (attached) confirms these credits were realized. The Shores SWSP is approved pursuant to § 37 -90- 137(11) and is owned and operated by the Applicant and therefore the utilization of Shores credits will be allowed. The credits are assessed a transit loss of 16.5% to account for 33 stream miles at 0.5% per mile loss. To cover the month of April, the Applicant has obtained a lease with the Groundwater Management Subdistrict ( "GMS ") of the Central Colorado Water Conservancy District for 19.2 acre -feet of GMS water. This water will be released from Central's La Poudre Reservoir (WDID 0303377) located within the boundaries of La Poudre Aggregate Mine M- 1983 -090. A copy of the signed lease was provided to this office on May 23, 2013 and is attached. To cover the months of October through December, the Applicant will need to obtain a sufficient lease that can provide replacement water either to the site, or to the Poudre's confluence with the South Platte River. This lease has not been obtained and thus this SWSP will expire on August 31, 2013 but will be automatically extended to December 31, 2013 upon the submission of a sufficient lease to our office.