HYDRO21080

• Permit No: M1989029
• IBM Index Class Name: Hydrology
• Doc Date: 8/19/2005
• Doc Name: Sub. Water Supply Plan
• From: OSE
• To: Applegate Group
• Media Type: D
• Archive: No

Mr. Donald Frick
August 15, 2005 ~!,
Page 2 i
this plan and made appurtenant to the tract of land where the gravel pit will be located, until a
permanent augmentation plan for the gravel pit has been adjudicated. The 52.5% interest
consists of a 21.55 percent interest owned by the City of Longmont and a 30.9 percent interest
owned by Aggregate Industries. According to the plan approximately 57.6 acres of ground
water would be exposed at the site if the site was abandoned and dewatering stopped,
representing a depletion of 148 acre-feet annually. The surface area that would be exposed
should dewatering cease is less than the area currently exposed at the site since several dikes
located between the existing ponds could be easily removed, thereby draining the water to the
eastern-most pond on the site. The 52.5% interest in the Coffin & Davis represents an annual
consumptive use credit of 172.2 acre-feet, therefore, the commitment is found to be adequate
to cover the depletions from evaporation that would occur if the dewatering process was
stopped. A copy of this approval letter and a copy of the stock certificate shall be recorded with
the Weld County Clerk and Recorder's Office.
A monthly breakdown of depletions and replacements is shown in the attached Table No.
2 that was submitted with your report.
I hereby approve this substitute water supply plan, in accordance with Section 37-90-
137(11), C.R.S., subject to the following conditions: P
1. This SWSP shall be valid for the period of January 1, 2005 through December 31, 2005,
unless otherwise revoked, modified, or superseded by decree. Should a request for
renewal of this plan be needed, such renewal request must be submitted to this office by
September 30, 2005. '
2. The total area of pond surface exposed after December 31, 1980 shall not exceed 67.2
acres. Total consumptive use of the mining operation shall not exceed 190.35 acre-feet of
which 15.83 acre-feet is limited to water in product, 1.98 acre-feet is limited to dust
suppression, and 172.70 acre-feet is limited to evaporative loses. Should the total
consumption at the pit exceed these amounts prior to the expiration date of this plan, an
amendment needs to be filed with this office.
3. The Applicant shall provide daily accounting (including, but not limited to diversions,
depletions, replacement sources, and river calls) as required by the Division Engineer
for the operation of this SWSP. The Applicant shall provide accounting to the Division
Engineer and the Water Commissioner on an interval acceptable to the Division
Engineer and Water Commissioner. Accounting and reporting procedures are subject
to approval and modification by the Division Engineer. The Applicant shall ensure that
all required accounting is forwarded promptly to the Water Commissioner and the
division office to enab{e the administration of this SWSP. The Water Commissioner
responsible for the administration of this plan is Mr. Scott Edgar,1735 Dolores River
Drive Windsor, CO 80550, phone no. [phone].
In addition, the applicant shall submit a report from each entity making replacements; for
this plan, that entity is the City of Westminster. The report shall include an accounting
of all wastewater plant water effluent controlled by each entity, showing the total volume
of water under its control at the various wastewater treatment plants;^ and the amount
committed to each of the recipients of the water. ',