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Office(303)688-6611 6374 S. Racine Circle, Centennial,Colorado 80111 <br /> Fax(303)688-6685 <br /> www.castierockconstructionco.com <br /> Orton Pit Engineering Analysis <br /> of Lumen Telephone Line Crossing <br /> General Project Information: <br /> Castle Rock Construction Company is pursuing a borrow pit on the southern edge of El Paso County, <br /> located at mile post 27.7 on State Highway 115, to provide earthen fill for CDOT Project 22903 on <br /> SH115. The proposed pit would expand a historic pit from the original construction of SH115 and only be <br /> permitted/used for this one Project (less than 2 years). Access for this operation will be through an <br /> existing field access driveway. Near the right of way fence line for State Highway 115 there is an <br /> underground copper telephone line owned by Lumen which crosses the existing drive access. <br /> Basis of Analysis: <br /> Soil borings were conducted 200 feet away within the limits of the Proposed Orton Pit, the results of the <br /> soil testing from those boring conducted by Ground Engineering concluded that the soils were all A-2-4 <br /> or better. <br /> Findings and Conclusions: <br /> Based off the soil data collected the following findings and conclusions can be made: <br /> 1. If 2 feet of cover are maintained above the existing copper telephone line owed by Lumen, there <br /> will be no risk of damage to the existing Lumen line. <br /> 2. CRCC shall verify the existing depth of the Lumen line which was assumed to be a standard 30 <br /> inch bury depth to confirm that there is a minimum of 2 feet of cover above the line. <br /> 3. Under no circumstance shall CRCC cut below existing grade above this line,fill may be placed as <br /> part of the roadway improvements. <br /> 4. CRCC shall maintain a minimum of 2 feet of cover over the existing Lumen line, if there is less <br /> than 2 feet of cover existing, fill shall be placed prior to any haul operations out of the Orton Pit. <br /> In all there will be no impact to the existing Lumen line from operations at the proposed Orton pit if 2 feet <br /> of cover is maintained above the existing line. CRCC shall maintain 2 feet of cover above the line until <br /> operations in this proposed pit are complete. <br /> Prepared By: <br /> 4?0� <br /> Travis Bell, EI <br /> General Superintendent,Castle Rock Construction Company <br />