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�Rou�ra <br /> ENGINEERING <br /> August 16, 2018 <br /> Subject: Proposal for Professional Services, <br /> Slope Stability Evaluation, Ralston Quarry, <br /> Golden, Colorado <br /> Proposal No. 1807-1305 Revised <br /> Stan Opperman <br /> Asphalt Paving Company <br /> 14802 W. 441h Avenue <br /> Golden, Colorado 80403 <br /> Dear Mr. Opperman: <br /> GROUND Engineering Consultants, Inc. (GROUND) is pleased to submit a proposal to conduct <br /> a slope stability evaluation of an area of the slope on the western side of the ridge at <br /> Asphalt Paving Company's Ralston Quarry in Golden, Colorado. We understand that a portion <br /> of the slope approximately 3 to 4 acres in area failed displacing soil down the slope and a limited <br /> distance onto adjacent property. <br /> Based on our experience with similar projects, we propose the following: <br /> Scone of Service <br /> • Perform reconnaissance level geologic mapping of the subject slope to evaluate the <br /> nature of the failure. Samples of the site soils will be collected for laboratory analysis. <br /> • Notify UNCC of our proposed temporary groundwater observation hole locations so that <br /> public utilities may mark their lines near them. <br /> • Drill 5, approximately 25-foot test holes and complete them as temporary, monitoring and <br /> observation holes. We will notify CDPHE of our "intention to install" them. If the holes are <br /> to become permanent, we assume that Asphalt Paving Company will make appropriate <br /> adjustments to the structures and register them with that agency. <br /> 41 Inverness Drive East I Englewood, CO 80112 1 (303)289-1989 1 www.groundeng.com <br /> ENGLEWOOD I COMMERCE CITY I LOVELAND I GRANBY I GYPSUM <br />