PERMFILE67690

• Permit No: M2005060
• IBM Index Class Name: Permit File
• Doc Date: 9/26/2005
• Doc Name: Adequacy Review Answers
• From: Weld County
• To: DMG
• Media Type: D
• Archive: No

Mr. Steve Nguyen, P.E.
May 5, 2005
Page 2 of 4
Depletions
Depletions to the stream system do not necessarily occur at the same time of actual
pumping because of the delayed impact of well pumping on the stream system. An alluvial
aquifer model with the following parameters was used: (1) The pumping well is placed at a
distance of 275 feet from the river, (2) The transmissivity used is 120,000 gallons per day per
foot, (3) The spedfic yield used is 0.2, and (4) The distance from the river to the impermeable
boundary is 2,700 feet. The results of the stream depletion model are attached as Table No. 1.
Replacement Source
The source of replacement water will be provided by use of a portion of the 300 acre-feet
of consumptive reuse credits perpetually leased from the City of Greeley pursuant to an
agreement entitled °Perpetual Lease of Fuly Consumable Water" dated November 10, 2004,
and recorded at reception #3242334 on December 8, 2004 in the records of the Weld County
Clerk and Recerder. The reuse cxedits are delivered to the Cache la Poudre River from the
outfall of the Greeley Muniapal Wastewater Treatment Fadlity in Section 4, 7 5 N, R 66 W, 6'"
P.M.
Conditions of Approval
1. This SWSP shall be valid for the period of April 1,2005 through March 31, 2006, unless
otherwise revoked, modified, or superseded by decree. Additional SWSP's are required
until a court decreed plan for augmentation is obtained for the proposed uses. Should
an additional plan be requested, the provisions of CRS 37-92-308(4)(b) shall apply. The
statutory fee of $300 will be required pursuarn to CRS 37-92-308(8). Any request for an
additional SWSP must be submitted to this office no later than !l0 days prior to the above
expiration date.
2. Pumping will ~ limited to the well identified by well permit number 50426-F. Additional
wells may be inducted in the SWSP only if an amendment to the approved SWSP is
submitted with the required $300 fee and approved. Any request for amendment must
include, at a minimum: idernfication of the subject wells, an estimate of the amount of
water each well will pump by month, an update of the total stnaam depletions by monk
including post SWSP depletions and identficafion of the source of additional
replacement water. Approval of an amendment wip be contingent upon the Applicant
demonstrating it has suffiaent replacement water to cower the additional well depletions.
Notice must be sent to all objectors to the water court case and an amendment must be
filed in the pee to add the additional wells.
3. Under the terms of this SWSP, pumping of well permit no. 50426-F shall be limited to 75
acre-feet per year and the use of water from the well is limited to off-site watering
purposes associated with Weld County's gravel pit operations and public works pn~jeds,
indud'mg dust control of County roads, haul roads, and stockpiles; washing and
processing of sand, gravel and aggregate; truck and equipment washing; construction of
public roads and facl'fies; redamafion irrigation of County property and wetlands; and
fire suppression and emergency response. .
4. ff the well in this SWSP causes depletions that affect a senior surface water right at a
bcation where this SWSP cannot provide replacemern water, the well is subject to
curtailmerrt urnil arrangements are made to provide neplacement water at a point which