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r �r C. . rJ2' �^q COLC•iRADO 3 •, ® Division of Water hesourct,s Responsg to Reclamation Permit Amendment Application Consideration DATE: August 28, 2015 TO: Eric C. Scott, Environmental Protection Specialist CC: Division 1 Office, District 4 Water Commissioner RECEIVED FROM: Sarah Brucker, P.E. ,- RECEIVED RE: Larimer Pit, File No. M-1974-069 - AM03 Applicant/Operator: Loveland Ready Mix Concrete, Inc. Contact: (970) 667-2680 DIVISION OF RECLA IATION, Sections 15 Et 16, Twp 5 North, Rng 67 West, 6th P.M., Larimer County MINING AND SAFETY CONDITIONS FOR APPROVAL ❑ The proposed operation does not anticipate exposing groundwater. Therefore, exposure of ground water must not occur during or after mining operations. ® The proposed operation will consume ground water by: ❑ evaporation, ® dust control, ❑ reclamation, ® water removed in the mined product, ® concrete production, ❑ other: _. Prior to initiation of these uses of ground water, the applicant will need to obtain either a gravel pit or other type of well permit, as applicable. However, prior to obtaining a permit, an approved water supply plan or decreed plan for augmentation is required. ❑ The applicant has indicated plans to use other water at the permit site for the following purposes: ❑ dust control, ❑ reclamation, ❑ processing, ❑ other: _ COMMENTS: The application seeks an amendment to add 32.78 acres to the currently permitted 202.74 acres at the Larimer Pit, for a total permit area of 235.52 acres. The 32.78 acres to be added are immediately adjacent to the current permit boundary. Of the 32.78 acres, 15 acres will be mined and designated as Pit No. 21. Pit No. 21 must be included in an approved substitute water supply plan or decreed plan for augmentation prior to the exposure or consumption of any ground water at Pit No. 21. Please see the attached letter to Ms. Jennifer Lindahl at Bishop -Brogden Associates, Inc. dated June 5, 2015 for additional information. Well permit nos. 62009-F and 69035-F were obtained for the current use and exposed pond surface area of the Larimer Pit in accordance with 5 37-90.137(2) and (11), C.R.S. The applicant may be required to obtain a new well permit if the proposed mining of Pit No. 21 will expand the uses allowed under permit nos. 62009-F and 69035-F. Any storm water runoff intercepted by this operation that is not diverted or captured in priority must infiltrate into the ground or be released to the stream system within 72 hours. Otherwise, the operator will be required to make replacements for evaporation. This office has no objection to the proposed amendment, subject to the conditions above. The applicant may contact the State Engineer's Office with any questions. 3 Sh.., S' Ce., F at E21 D- .t CU 8020 1 P 305 84r 378' f 3'J' S�� ;53� ...,,. v i • i '?nrc .itt.t; w , �N7