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<br /> � � iICOLORADO
<br /> Division of Water Resources
<br /> � Deoartment ot Nat.ral Resources
<br /> January 19, 2022
<br /> Walter M. Niccoli, P.E.
<br /> Telesto Solutions, Inc.
<br /> 3801 Automation Way, Suite 201
<br /> Fort Collins, CO 80525
<br /> RE: Laporte Operations Substitute Water Supply Plan (WDID 0302532, Plan ID 5958)
<br /> Knox Pit, DRMS Permit No. M-2017-036 (WDID 0307920)
<br /> SW '/a Section 28, T8N, R69W, 6`h P.M.
<br /> Water Division 1, Water District 3, Larimer County
<br /> Approval Period: January 1, 2022 through December 31, 2022
<br /> Contact Information for Mr. Niccoli: 970-484-7704; wniccoli@telesto-inc.com
<br /> Dear Mr. Niccoli:
<br /> We have reviewed your submittals of December 15 and December 28, 2021, requesting
<br /> approval of the above referenced substitute water supply plan ("SWSP") in accordance with section
<br /> 37-90-137(11), C.R.S. The SWSP is requested to cover depletions associated with the Knox Pit sand
<br /> and gravel mining operation, operated by Loveland Ready-Mix Concrete, Inc. ("LRM" or "Applicant").
<br /> The required renewal fee of $257 has been received (receipt no. 10017469). The SWSP for this site
<br /> was initially approved on April 17, 2020 for operations throu�h December 31, 2021.
<br /> SWSP Operations
<br /> The Knox Pit site consists of approximately 125 acres located just east of Laporte, Colorado.
<br /> The Larimer County Board of County Commissioners conditionally approved operations at the site in
<br /> January of 2019; however, prior to the County issuing a building permit, a lawsuit halted all County
<br /> permit issuances on the project. Currently, groundwater has been exposed in the Water Management
<br /> Pond, but mining of the site has not yet begun. Mining of the site is anticipated to occur in five
<br /> phases, consistin� of approximately 17 acres each, and be completed over a period of 10 to 12 years.
<br /> For the purposes of this SWSP, it has been assumed that LRM will receive a County buildin� permit by
<br /> the end of May 2022, will complete the construction of the Water Management Pond in June of 2022,
<br /> and will begin mining Phase t in July of 2022. Material will be mined below the groundwater table,
<br /> and the mining excavations will be dewatered. Water collected by the dewatering system will be
<br /> pumped to the unlined Water Management Pond and used onsite for dust suppression, ag�regate
<br /> washing, concrete production, and truck washing. Storm water falling on the site is proposed to be
<br /> captured in a storm water tank and pumped to the Water Management Pond. Water ptaced in the
<br /> Water Management Pond that is not pumped for operational uses will be allowed to seep into the
<br /> ground and will be accounted for as an accretion to the river. The site will also contain a
<br /> recirculated wash water/reclaim pond to help manage the water supply. This pond will be shallow
<br /> and witl be constructed above the groundwater table. As mining progresses, a compacted liner will
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