2017-06-30_HYDROLOGY - M2009082

• Permit No: M2009082
• IBM Index Class Name: Hydrology
• Doc Date: 6/30/2017
• Doc Name: Substitute Water Supply Plan
• From: DNR Water Resources
• To: DRMS
• Email Name: PSH
• Media Type: D
• Archive: No

Parsons Mine SWSP June 30, 2017
Plan ID 5822 Page 6 of 10

Office of the State Engineer
1313 Sherman Street, Room 821, Denver, CO 80203 P 303.866.3581
www.water.state.co.us

a) Greeley Water Pollution Control Facility Outfall (WDID 0302312) located on the Cache La
Poudre River;
b) JBS Swift Industrial WWTP Outfall (WDID 0102342) on Lone Tree Creek;
c) confluence of the 35th Avenue Drainage Ditch and Cache La Poudre River;
d) any augmentation station/release structure(s) to be constructed in the vicinity of such
confluence and associated with Greeley’s operation of reservoirs knows as Flatiron Reservoir
Nos. 1-5 (a.k.a. Poudre Ponds/Greeley West Pit/Greeley 25th Ave Pit);
d) an augmentation station/release structure located under the Boyd and Freeman Ditch and
approved by the water commissioner and division engineer for such purpose;
e) release structures from Greeley Canal No. 3 as described in Greeley’s decree in case no.
99CW232, or;
f) any other release and measurement point that Greeley and MMM agree upon.
The Applicant is required to coordinate with the water commissioner the delivery location of
replacement water to ensure out-of-priority depletions are adequately replaced to prevent injury
to other water rights. Excess fully consumable water leased from Greeley cannot be used for
replacement of depletions from the Parsons Mine without prior approval from the water
commissioner. Conveyance loss for delivery of augmentation water is subject to assessment and
modification as determined by the water commissioner or division engineer.

Long Term Augmentation
The original DRMS final reclamation plan for the site was developed by MM’s predecessor,
Lafarge West, Inc. The 2009 reclamation plan shows a mixture of the pits being reclaimed to open
water ponds or wetlands, with approximately 60 acres of the site covered with water once
reclamation is complete. Based on information previously received by this office, MM plans to
revise the final reclamation plan and it is expected that a large majority, if not all, mined areas
will either be backfilled or lined in order to minimize any long-term exposed groundwater at the
site.
In accordance with the letter dated April 30, 2010 (copy attached) from the Colorado
Division of Reclamation, Mining, and Safety (“DRMS”), all sand and gravel mining operators must
comply with the requirements of the Colorado Reclamation Act and the Mineral Rules and
Regulations for the protection of water resources. The April 30, 2010 letter from DRMS requires
that you provide information to DRMS to demonstrate you can replace long term injurious stream
depletions that result from mining related exposure of ground water. The DRMS letter identifies
four approaches to satisfy this requirement.
In accordance with approach nos. 1 and 3, an increased bond has been obtained for
$286,895.00 through the DRMS.

Conditions of Approval
I hereby approve the proposed SWSP in accordance with § 37-90-137(11), C.R.S. subject to
the following conditions:
1. This SWSP shall be valid for the period of June 1, 2017 through May 31, 2018, unless
otherwise revoked or superseded by decree. If a court decreed plan for augmentation is