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<br /> <br />• <br />f~ <br />.~ ~a <br />RALSTON QUARRY ANNUAL REPORT <br />(Case Nos. M80-1 and Z88-43) <br />Crushin& Equipment: During the past year, Asphalt Paving Co. experienced an <br />increase in demand for products from this quarry. This increase in demand <br />has been created by the construction of the new Denver International Airport, <br />and should subside by late Summer 1993. In order to meet this demand and <br />stay within the working hour guidelines set forth for its operation, Asphalt <br />Paving Co. temporarily added two portable crushers during early Summer 1992 <br />and Spring 1993. These crushers were incorporated into the existing crushing <br />spread so as to avoid any increase in machine travel along the quarry' floor. <br />Other crushing activities continue as they- were the previous ,y-ear. <br />The demand created by the airport has given us the benefit oY' more consistent <br />and steady operation because the products are being stockpiled at the airport <br />as the,r' are produced. This has allowed us to avoid the peaks and galleys in <br />our operation and kept us producing during the winter months. <br />Security Fencing, Roads, Pit Configuration: Asphalt Paging Co. continues to <br />comply with Exhibit A of our application to the Jefferson County Board of <br />Adjustments as it relates to fencing. The entire perimeter of all the mining <br />operation remains fenced and secured and is subject to constant patrol to <br />insure no breakage in the fencing perimeter. <br />Asphalt Paving Co. continues to maintain a hard-surfaced road from Highc:ay 93 <br />to the quarry pit area, including portions of Colorado Highway 93 which are <br />classified as acceleration/deceleration lanes to the main entrance. It <br />should be noted that a new entrance road was constructed in 1985 under a <br />Colorado Department of Highways state road project. This construction has <br />been a major safety improvement. The site distance both North and South from <br />this entrance road has been carefully preserved; the integrity of the <br />acceleration/deceleration lanes to this entrance road has been improved. <br />This entrance from SH93 meets all criteria established by the State Highway <br />Department. This roadway area is periodically swept, Cohen needed, in order <br />that it may be kept reasonably clean of dust and spillage. The cross <br />culverts and cattle guard areas continue to be cleaned and maintained to <br />insure positive drain patterns. Loaded trucks continue to be inspected at <br />the main scale before leaving the site to minimize the loss of materials that <br />map spill from the truck on its trip to the delivery point. <br />As per the resolutions of the previously approved mining plan, we continue to <br />progress from the South end of the dike in a Northwest to Southwest angular <br />vertical cut. This removal process continues to screen the main crushing <br />operation from the view of residences to the East. All setbacks and safety <br />precautions continue to comply with the operational plan as previously <br />submitted to the Colorado Mined Reclamation Division. A neca computerized <br />truck scale has been purchased and installed and is presently in use. The <br />oid truck scale has been removed entirely. The new scale and adjoining <br />office have been located South of the old scale location. This new install- <br />ation has necessitated a realignment of the main quarry access road in the <br />. area of the secondary crusher. This new scale location/roadway realignment <br />was done for safety reasons; to spread out" the trucking congestion and <br />separate it and the loading operation from the crushing activity itself. <br />