2008-01-14_HYDROLOGY - M2001107

• Permit No: M2001107
• IBM Index Class Name: HYDROLOGY
• Doc Date: 1/14/2008
• Doc Name: Substitute Water Supply Plan
• From: OSE
• To: Clear Water Solutions
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

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~T'ATE OF COLORADO
OFFICE OF THE STATE ENGINEER
Division of Water Resources t ~~ ~ °~ c~`°~P,
Department of Natural Resources ~`=%
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1313 Sherman Street, Room 818 ~*
~l876
Denver, Colorado 80203
Phone [phone]
FAX [phone]
January 8, Bill Ritter, Jr.
http://www.water.state.co.us Governor
Harris D. Sherman
Executive Director
Rachel Kullman
Clear Water Solutions Dick Wolfe, P.E.
State Engineer
8010 S. Country Road 5, Ste. 105
Windsor, CO 80528
RE: Substitute Water Supply Plan, NCCI Pit #1, M-2001-107
Section 24, T2N, R67W, 6 P.M.
Water Division 1, Water District 2, Weld County R~C~~Q
Approval period: January 1, 2008 through December 31, 2008 JAN 1 4 2008
Contact phone number for Ms. Rachel Kullman: 970-223-3706 pivislon ~;t Reclamation,
Mining and Safer
Dear Ms. Kullman:
We have received your letter of October 25, 2007, requesting renewal of the above
referenced substitute water supply plan to cover depletions caused by an existing gravel mining
operation operated by Northern Colorado Constructors, Inc. ("Applicant"). The required fee of
$257.00 for the renewal of this substitute supply plan ("SWSP") has been submitted (receipt no.
3622686). The original supply plan was approved on December 30, 2002 and the SWSP was
most recently renewed on October 27, 2006.
Plan Operation
This plan seeks to replace depletions resulting from mining at the NCCI Pit #1 ("NCCI
Pit"). There will be one dewatering trench around the active mining cell. Water from the trench
will be collected in a process water pond then pumped to a sedimentation pond. After
sedimentation, the water will be returned to Little Dry Creek where it will flow back to the South
Platte River. The total exposed water surface at the site is 2.73 acres.
In order to provide a buffer to neighboring wells from dewatering, the Applicant
constructed two recharge ditches on the southern end of the property. The Applicant will place
a portion of its dewatering water into these recharge ditches.
Depletions at the site will result from evaporation, water lost in mined product, concrete
production, asphalt production and dust control. The lagged depletions will be replaced using
three shares of Lupton Meadows Ditch Company and fully consumable effluent leased from the
City of Thornton ("Thornton").
The reclamation plan for the NCCI Pit is to place a compacted clay liner around the
interior of the mine slopes for the purpose of preventing groundwater seepage from entering
the pit. The applicant has bonded for lining of the pit through the Colorado Division of
Reclamation Mining & Safety.