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RECEIVED <br />AUG 0 7 2003 <br />June 4, 2003 <br />Division of Minerals and Geology <br />Mr. Tony Waldron <br />Colorado Division of Mines and Geology <br />;dear Mr. Waldron: <br />Subject: Response to Comments Regarding <br />Stope Stabitity, Brighton Water Storage <br />Project, Adams County, Colorado <br />Job No. 02-0065 <br />Ground Engineering Consultants, Inc., (GROUND) performed 2 ruosurface exploration <br />program and slope stability analyses for the site of the proposed Brightor< Water Storage <br />Project southeast of the intersection of 124°i Avenue and U.S ~iighway i35, in Adams <br />County, Colorado. Our findings, conclusions and recommendations are summarized in <br />GROUND'S report, Slope Stability Analyses, Brighton Water Storage Projecf, Adams <br />County, Colorado, Job No. 02-0065, prepared for Les Ewegen, LLC, dated tvtay 31, <br />2002. At the request of Les Ewegen, LLC, we have reviewed comments by the <br />Colorado Division of Mines and Geology indicating violations pertaining to temporary <br />slope stability. These comments and our responses are presented below. Reference is <br />made to our May 31, 2003, report for a description of the site surface and subsurface <br />conditions, our general geotechnical findings and recommendations, and the Limitations <br />on our work, which also apply to GROUND'S conclusions and recommendations <br />provided herein. V+le consider al{ recommendations in that report not specifically <br />superseded herein to remain vano. <br />We understand that measurements by the Division of Mines and Geology on February <br />11, 2003, indicated that certain temporary slopes at the subject facility were at 68 <br />percent, 70 percent and 71 percent slope gradients -corresponding to slope angles of <br />about 34 to 35'/z degrees above horizontal. The measured slopes, therefore, were <br />RI~U~IID <br />E N G I N E E R I N G C O N S U L T P N T S <br />41 Inverness Driva Paul, Englewood, CO 80]]2-54]2 ~ Pbone (303) 2R9-3989 Fax (303) 2R94GRG <br />Narlh Offirv~ 7393 Dahlia SReei, Commerce City, CO 800224634 wwsv.groundang.ram <br />