2015-09-22_HYDROLOGY - M1980110 - Laserfiche WebLink

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Austin Malotte, P. E. September 17, 2015 Page 3 Glover Parameters - Sandy Acres Pit Pond The aquifer boundary and transmissivity were estimated from the Division of Water Resources ("DWR") South Platte River Decision Support System ("SPDSS") GIS shapefile. The AWAS analysis indicates that 95 percent of depletions affect the South Platte River within eight years after the SWSP period. The monthly steady state depletions resulting from the AWAS analysis are shown on the attached Table 1. The lagged depletions affecting the South Platte River between October 1, 2015 and September 30, 2016 total 85.64 acre-feet. Replacements The source of replacement water for this SWSP will be a lease of up to 90.96 acre- feet of fully consumable water leased from the Aurora. A copy of the current lease was provided to this office with the SWSP request and is attached to this letter. The current lease is valid through September 2024. Water leased from Aurora would be released from Robert W. Hite Treatment Facility (a/k/a Metro Wastewater Treatment Plant MWWTP) (WDID 0200700) in the SW1 /4 of the SW1 /4 of Section 1, Township 3 South, Range 68 West of the 6th P.M. A transit loss of 0.5 percent per mile is assessed to deliveries made to the South Platte River. The MWWTP is located 11.5 miles upstream of the point of depletions of Sandy Acres Pit, thus the total transit loss will be 5.75 percent. Replacement supplies from Aurora include transit loss, so all Sandy Acres Pit depletions are fully replaced at the point of depletions from October 2015 through August 2016 as shown in Column 6 of Table 2. The leased water consists of fully consumable water derived from prior municipal use by Aurora. The water provided by Aurora may be supplies from any water right approved for augmentation purposes. The Applicant shall ensure that the replacement water makes it to the calling water right. The division engineer, or his designated representative, will administer all such water transported in the South Platte River or its tributaries, including water for replacement of depletions, past intervening headgates to ensure that such water is not intercepted or otherwise diminished in quantity by diversion, use or other interference by intervening water rights and to assure that such water remains available and suitable for Applicant's uses under this plan, except when any intervening headgate is diverting the entire flow of ("sweeping") the river. In the event that delivery past headgates which sweep the river requires the installation of a bypass structure or the use of an existing bypass structure by agreement with a third -party, Applicant is responsible for either installing a new bypass structure with a continuous recording measuring device(s) as approved by the water commissioner or securing an agreement with a third -party to use an existing bypass structure and providing such information and agreement to the division engineer. X (ft) I W (ft) I T (gpd/ft) S Pond 13,173.4 112,172.6 1781729 0.2 The aquifer boundary and transmissivity were estimated from the Division of Water Resources ("DWR") South Platte River Decision Support System ("SPDSS") GIS shapefile. The AWAS analysis indicates that 95 percent of depletions affect the South Platte River within eight years after the SWSP period. The monthly steady state depletions resulting from the AWAS analysis are shown on the attached Table 1. The lagged depletions affecting the South Platte River between October 1, 2015 and September 30, 2016 total 85.64 acre-feet. Replacements The source of replacement water for this SWSP will be a lease of up to 90.96 acre- feet of fully consumable water leased from the Aurora. A copy of the current lease was provided to this office with the SWSP request and is attached to this letter. The current lease is valid through September 2024. Water leased from Aurora would be released from Robert W. Hite Treatment Facility (a/k/a Metro Wastewater Treatment Plant MWWTP) (WDID 0200700) in the SW1 /4 of the SW1 /4 of Section 1, Township 3 South, Range 68 West of the 6th P.M. A transit loss of 0.5 percent per mile is assessed to deliveries made to the South Platte River. The MWWTP is located 11.5 miles upstream of the point of depletions of Sandy Acres Pit, thus the total transit loss will be 5.75 percent. Replacement supplies from Aurora include transit loss, so all Sandy Acres Pit depletions are fully replaced at the point of depletions from October 2015 through August 2016 as shown in Column 6 of Table 2. The leased water consists of fully consumable water derived from prior municipal use by Aurora. The water provided by Aurora may be supplies from any water right approved for augmentation purposes. The Applicant shall ensure that the replacement water makes it to the calling water right. The division engineer, or his designated representative, will administer all such water transported in the South Platte River or its tributaries, including water for replacement of depletions, past intervening headgates to ensure that such water is not intercepted or otherwise diminished in quantity by diversion, use or other interference by intervening water rights and to assure that such water remains available and suitable for Applicant's uses under this plan, except when any intervening headgate is diverting the entire flow of ("sweeping") the river. In the event that delivery past headgates which sweep the river requires the installation of a bypass structure or the use of an existing bypass structure by agreement with a third -party, Applicant is responsible for either installing a new bypass structure with a continuous recording measuring device(s) as approved by the water commissioner or securing an agreement with a third -party to use an existing bypass structure and providing such information and agreement to the division engineer.