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BRIERLEY <br />ASSOCIATES <br />LimrteG Liability Company <br />°Creoting Space Underground" <br />August 10, 2004 <br />File No. 04030-000 <br />Ms. Juliet Moores <br />Elk Creek Sand & Gravel <br />P.O. Box 416 <br />Conifer, CO 80433 <br />Re: Elk Creek Quarry <br />Geologic and Slope Stability Evaluation <br />Deaz Ms. Moores: <br />INTRODUCTION <br />RE~~ ,$ <br />JaN z zctr~ <br />Division of iYUne,,,,y o~~d rieoloBY <br />At your request, Brierley Associates LLC (Brierley) has undertaken the scope of <br />work outlined in our proposal dated July 20, 2004 in order to assist Elk Creek Sand <br />& Gravel (Elk Creek) with rezoning negotiations and application with Jefferson <br />County. Our assistance relates to County requirements for geologic information as <br />part of the rezoning package being assembled by Elk Creek and includes stability <br />analysis for future mining and reclamation plans for the site under an existing <br />Division of Minerals & Geology (DMG) 110 Mining and Reclamation Permit <br />(Permit No.M-19'18-208). <br />Brierley proposed to undertake six (6) specific tasks as follows: <br />Task 1 -Review Existing Information: Review available geologic and <br />geotechnical information in order prepare a Geologic Report without conducting <br />geotechnical investigations other than performing additional geologic mapping. <br />Task 2 -New Maps: Assemble existing and/or prepare updated site <br />location/fopography and geology figures as necessary to accompany our report. <br />Task 3 -Geologic Mapping: Conduce limited additional geologic mapping at the <br />site to support geotechnical stability evaluations. <br />Task 4 -Slope Stability Evaluation: Prepaze a summary and interpretation of the <br />results of the geologic mapping and perform straightforward slope stability <br />evaluations based on the geologic structure, slope orientation and proposed slope <br />2329 West Main Street angle. <br />Suite 201 <br />Lrtlleton, CO 801 ZO <br />303,703.1405 <br />fax 303.703.1404 <br />www. brierleyassoc~ates. com <br />JC 00768 <br />PetersanlElk Creek <br />