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'~ i ~ III IIIIIIIIIIIII Ill 999 ~FARGE May 16, 2000 Mr. Don Mazostica Loveland Commercial, LLC 1199 Eagle Drive Loveland, CO 80537 RE: Loveland Pit Dear Mr. Mazostica, I received your letter dated May 5, 2000 that outlined some of yow concerns regarding Lafarge's application for a Regular Construction Materials Operation Reclamation Permit for the project known as the Loveland Pit (DMG File No. 2000-034). We appreciate your concern and vigilance regarding the effect our operations could have on the property on the south side of the Big Thompson River. As you are aware, our operations are permitted, regulated, and monitored by Federal, State, and Local governments. Regarding your specific concern that the floodway channel has been previously altered in a manner which could adversely affect adjacent properties, the permitting process through Larimer County obliges us to model the effect which will occur as a result of our proposed operations pursuant to this application. If you have contents about previous activity that may have occurred on this property, it is incumbent upon you to pursue that discussion with any consultants you hire to evaluate the situation. We have been instructed by Larimer County to perform a hydraulic modeling study, currently underway, which is being conducted by Simons & Associates in Fort Collins. This study is based upon the current regulated Flood~vay as shown on FEMA FIRM Map Community Panel Number 080101 0245B, cross sectional information from that study, cross sectional information from bridge improvements from 1981, and current topographic information. W'e will be using the results of this study to design ow operations. Again, the purpose of [his study is to show changes in 100-year event water surface elevation compazed to a baseline, which is the 1979 FEMA floodplain study. The study only shows changed topography at the immediate location ofproposed mining activities to represent the actual pits and stockpiles as shown in the mining and reclamation plans. Topography is not changed from the FEMA study in any other way. Changing any other surrounding features or topography would provide study results that cannot conclusively show what impact the proposed mining activities have relative to any number of other channel changes that may have occurred naturally or by human activities in that reach of the river since 1979. WESTERN MOBILE INC., a subsidiary of Lafarge Corporation TECHNICAL SERVICES 1590 W. 12th Ave., Denver, Colorado 80204-3470 Office: (303) 657-4000 Fax: (303) 657-4339