HYDRO21760

• Permit No: M2004009
• IBM Index Class Name: Hydrology
• Doc Date: 8/8/2006
• Doc Name: Substitute Water Supply Plan
• From: OSE
• To: Weiland Inc.
• Permit Index Doc Type: Correspondence
• Media Type: D
• Archive: No

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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]
Mr PeterWaylandJ ~/
Weiland, Inc.
525 3`~ Avenue, Suite 211
Longmont, Colorado 80501
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STATE OF COLORADO
RECEIVED
August 2, 2006
BUG 0 8 2008
//ulltision ~f Minerals and Geelo~y

RE: Turnpike Mining Resource, Substitute Water Supply Plan, M-2004-009
Section 31, T2N, R68W
Water Division 1, Water District 6, Weld County
Approval Period: August 1, 2006 through July 31, 2007 (July 31, 2008 if extended)
Contact information for Mr. Peter Wayland: 303-436-0951
Dear Mr. Wayland:
Of ~
NR~
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`rave `
Bill Owe,K
Governor
Russell George
Executive Director
Hal D. Simpson, P.E.
State Engineer
This letter is in response to the application submitted in September, 2005, and resubmitted
in May, 2006, requesting approval of a substitute water supply plan (SWSP} to be operated by
Asphalt Specialties Co., Inc. ("ApplicanC) in accordance with Section §37-90-137(11), C.R.S. The
applicant shall be responsible for compliance with this plan, but the State Engineer's Office may
also pursue the landowner for eventual compliance. The required fee of $1,343 for the substitute
water supply plan has been paid.
Plan Operation
The Turnpike Mining Resource property has historically been used for grazing land and
gravel mining. A portion of the property was previously mined in the 1970's through 1990's. In the
1990's the site was reclaimed and the Colorado Division of Minerals and Geology Bond was
released. An augmentation plan executed with the District 6 Water Users Association currently
replaces depletions resulting from evaporation from the 30-acre ground water pond that currently
exists at the site.
This SWSP seeks to replace depletions resulting from new mining at the Turnpike Mining
Resource site. Upon completion of mining, the site will be reclaimed by installing a compacted
clay liner on excavation slopes to prevent groundwater seepage. The SWSP request described
the proposed water uses for the proposed nine-year life of the mine. Up to 0.86 acres of
groundwater maybe exposed within the permit area, including dewatering and recharge trenches
during the lwo-year term of this approval.
The pit will remain continuously dewatered until reclamation is completed. Water produced
from the dewatering process will be recharged to the aquifer through recharge trenches. The
recharge trenches are shown in attached Sheets 1-3 and are located at the same approximate
distance from Boulder Creek as the mining cell centroids. The trenches will be approximately 4
feet wide and 5 feet deep and oriented approximately parallel to Boulder Creek. The recharge
trenches will prevent the need for extended replacement of lagged dewatering depletions when
the dewatering of the cells ceases.