2009-10-27_HYDROLOGY - M2004047

• Permit No: M2004047
• IBM Index Class Name: HYDROLOGY
• Doc Date: 10/27/2009
• Doc Name: Substitute Water Supply Plan
• From: OSE
• To: Weiland, Inc.
• Permit Index Doc Type: Hydrology Report
• Media Type: D
• Archive: No

5'
DEPARTMENT OF NATURAL RESOURCES
DIVISION OF WATER RESOURCES
Mr. Peter F. Wayland
Weiland, Inc.
P.O Box 1921
Lyons CO 80540
Bill Ritter, Jr.
Governor
October 27, 2009 Harris D. Sherman
Executive Director
Dick Wolfe, P.E.
Director/State Engineer
Re: Substi u Water Supply Plan, Farfrumwurkin, LLLP, File Pit 11
DRMS M2004-047
Sections 31 & 32, T2N, R68W, 6th P.M.
Water Division 1, Water District 6, Weld County
Approval Period: August 20, 2009 through July 31, 2010
Contact Phone Number for Mr. Wayland: 303-823-0951 r/®CT
Dear Mr. Wayland:

Your letter dated August 15, 2009, requesting renewal of the above referenced substitute water
supply plan ("SWSP") to cover depletions caused by an existing gravel mining operation has been
reviewed. This sand and gravel pit is operated by Farfrumwurkin, LLLP ("Applicant"). The original plan
was approved on November 10, 2003 and it was most recently approved on December 10, 2004
(amended on December 17, 2004). The required fee of $257 for the renewal of this substitute water
supply plan has been submitted (receipt number 3642281).
Plan Operation
The File Pit II site was designated as 111 c special permit that identified a pit area of
approximately 13.4 acres. The site is being expanded under a new 112 permit, from 13.4 acres to
approximately 106 acres. Currently there are approximately 0.89 acres of water surface exposed at the
site in the dewatering trenches and a sediment pond (0.14 acres in the dewatering trenches and 0.75-
acres in a sediment pond). However, the SWSP was proposed for approximately 1.5 acres of water
surface exposed in the dewatering trenches and a sediment pond (0.5 acres in the dewatering trenches
and 1-acre sediment pond). Dewatering trenches were placed around the pit and pumped to facilitate
dry mining. Any lagged stream depletions to Boulder Creek resulting from pumping of the dewatering
trenches will be offset by placing the water collected from dewatering directly into a recharge well .
located approximately the same distance from the river as the dewatering trenches. The recharge well
will utilize an existing well, located northeast of the proposed excavation. The existing well to be used
for recharge was permitted under permit no. 262574 in accordance with Section § 37-92-602, C.R.S. as
a monitoring well.
Depletions
Depletions to the Boulder Creek will occur as the result of surface water evaporation from
ground water exposed in the dewatering trenches and the sediment ponds, water lost with the mined
product, and water used for dust control. This plan describes the proposed maximum annual water
consumption on a monthly basis. The attached Table I show that during the period of August 2009
Office of the State Engineer
1313 Sherman Street, Suite 818 • Denver, CO 80203 • Phone: [phone] Fax: [phone]
www.water.state.co.us