2014-04-22_HYDROLOGY - M1999050

• Permit No: M1999050
• IBM Index Class Name: HYDROLOGY
• Doc Date: 4/22/2014
• Doc Name: Substitute water supply plan
• From: Division of Water Resources
• To: Williams and Weiss Consulting, LLC
• Email Name: MAC
• Media Type: D
• Archive: No

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DEPARTMENT OF NATURAL RESOURCES
DIVISION OF WATER RESOURCES
April 21, 2014
Mr. Todd Williams, P.E.
Williams and Weiss Consulting, LLC
5255 Ronald Reagan Blvd, Ste. 220
Johnstown, CO 80534
Re: Timnath- Connell Substitute Water Supply Plan (WDID 0302526)
Timnath- Connell Pit, DRMS File No. M- 1999 -050 (WDID 0303018)
Section 3, T6N, R68W, 6 1 P.M.
Water Division 1, Water District 3, Larimer County
Approval Period: April 1, 2014 through March 31, 2015
Contact Phone Number for Mr. Williams: 303 - 653 -3940
Dear Mr. Williams:
John W. Hickenlooper
Governor
Mike King
Executive Director
Dick Wolfe, P.E.
Director /State Engineer
APR 2 2 2014
Division of (Reclamation,
Mining & Safety
This letter is in esponse�o your letter dated February 14, 2014 in which you request renewal
of the above referenced substitute water supply plan (SWSP) on behalf of Connell Resources, Inc
(Applicant) in accordance with S 37 -90- 137(11), C.R.S. to cover depletions caused by gravel mining
operations at the Timnath- Connell Pit (M- 1999 -050). The required fee of $257 has been submitted
(receipt no. 3663653). The most recent SWSP renewal was approved on March 27, 2013 and expires
on March 31, 2014.
SWSP Operation
Mining operations at the Timnath- Connell Pit during this plan period will consist of processing
of sand and gravel material that is delivered from the Applicant's SerFer Pit (M- 2008 -006), dust
control, and reclamation activities. The reclamation activity proposed to occur at the Timnath-
Connell Pit during this plan period is limited to backfilling of previously mined areas. No additional
mining of sand and gravel is proposed to occur at this site during this plan period. Replacement of
depletions at the site will be made via delivery of Box Elder Ditch Company shares to an on -site
recharge pond. The final reclamation plan for the site calls for a lined reservoir for the area west of
the Box Elder Ditch and backfilling of the mined area to the east of the Box Elder Ditch. An 8.10 -
acre recharge pond and a 2.74 -acre unlined pond will remain on the site after reclamation.
Depletions
There are 6.03 acres of exposed ground water at the site in addition to the 8.10 -acre
recharge pond. Ground water is exposed at the site in 0.15 acres of dewatering trenches, a 0.53 -acre
dewatering sump, a 2.61 -acre pond used to provide water for dust control purposes, a 2.74 -acre
pond, and the 8.10 -acre recharge pond. Evaporative depletions were calculated using a gross annual
evaporation of 39 inches, with a credit of 10.1 inches for effective precipitation (based on an
average annual precipitation for the Loveland and East Ft. Collins weather stations). Net
evaporative depletions are 19.52 acre -feet per year for the 8.10 -acre recharge pond and 14.53 acre -
feet per year for the remaining 6.03 acres of exposed ground water (see attached Tables 1 and 2).
The evaporative loss from the recharge pond is deducted from the deliveries to the recharge pond in
the given month prior to determining the net positive accretion or depletion from the pond and is
thus not included in the total net depletions.
Office of the State Engineer
1313 Sherman Street, Suite 818 • Denver, CO 80203 • Phone: [phone] • Fax: [phone]
www.water.state.co.us