HYDRO30120

• Permit No: M1987049
• IBM Index Class Name: Hydrology
• Doc Date: 9/4/2007
• Doc Name: Substitute water supply plan
• From: OSE
• To: Bishop-Brogden Associates, Inc.
• Media Type: D
• Archive: No

L~ STATE OF COLOI~A~
D.~
OFFICE OF THE STATE ENGINEER
Division of Water Resources
Department of Natural Resources
1313 Sherman Street, Room 818
Denver, Colorado 80203
Phone [phone]
FAX [phone]
hhp:l/www.water. slate.co. us
Jeffrey A. Clark
Bishop-Brogden Associates, Inc.
333 West Hampden Avenue, Suite 1050
Englewood CO 80110
Of' ~
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" O ~ LUYI yr'
Divistat.,~ ncuamalion,
Mining and Safety Bill Ritter, Jr.
Governor
August 29, 2007 Maas D. Sherman
Executive Director
(Vacant)
State Engineer
Re: Substitute Water Su Plan Bromley Lakes Pit (M-87-049)
actions 12, Township 1 South, Range 67 West, 6th P.M.
Water Division 1, Water District 2, Adams County
Approval Period: August 1, 2005 through July 31, 2007
Contact phone number for Mr. Clark: 303-806-8952
Dear Mr. Clark:
We have received your request of December 18, 2006 requesting approval of the above
referenced substitute water supply to cover depletions caused by an existing gravel mining operation.
The required fee of $217.00 for this substitute supply plan has been submitted.
SWSP Operation
The current status of mining operations as of August 29, 2007 is as follows: cell 1 has been
lined and the liner was approved on April 26, 2007, cell 2 was dewatered and partially backfilled in May
of 2007 resulting in 10 acres of exposed groundwater and mining in cell 3 has been completed and
there is no exposed water in the cell since it is currently being dewatered. This status was provided by
Ms. Julia Keedy, applicant's water resource engineer, to this office on August 29, 2007.
Despite the current status indicated above, the proposed supply plan is to replace depletions
caused by evaporation from up to 91.6 acres of water surface exposed after December 31, 1980, dust
suppression and the removal of water in product. According to the information submitted no water
surface was exposed prior to January 1, 1981. The plan estimates that the area of evaporation will be
the surface area of exposed ground water consisting of: 48 acres for cell 1 from August 2005 through
April 2007, 5 acres combined for cells 2 and 3 during the mining of those cells from August 2005
through February 2007 (after which production switches to Ready Mixed Pit 1), 38.6 acres for cell 2
from May 2006 through April 2007, average of 19 acres for cell 2 in May 2007 while it was dewatered
and partially backfilled, and 10 acres for cell 2 for June and July 2007.
Depletions
Consumptive use of water at the property for the period of August 2005 through July 2006
consists of 189.25 acre-feet of evaporation from the exposed water surface; 44.82 acre-feet lost in
product (4°h moisture from 1,522,300 tons of raw material mined), and 1.98 acre-feet of water used for
dust control. Consumptive use of water at the property for the period of August 2006 through July