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MESA COUNTY . HEALTH DEP ID :3032486972 h1AR O1 ' 94 Idn . 003 P .01 <br /> l!I-!. i tf>, Cap. <br /> Iv .SAAJP: 4 �UCZAY <br /> of•/1 - 6,72 0 4Uc <br /> (',�om � f FR�l�✓D+l <br /> To: Mesa County Planning Department .ncNo zvl�clLb <br /> From: Mesa County Health Department/Environmental Health Divisi ._. <br /> Date: 2/18/94 <br /> Re: Project C30-94 Conditional Use Permdt for Orchard Mesa Gravel Pit/ <br /> Mountain Region Corporation/Sandra Ducray petitioner, <br /> Review Agency Conments: <br /> Mountain Region Corporation currently has an Air Mnission Permit (9214E373F) <br /> from the Colorado Department of Health which applies to its current operation <br /> located at 117 29 3/4 Road, Grand Junction, Mesa County, Colorado. The permit <br /> pertains to a screener (91ME373F-1) for the processing of aggregates nuned at <br /> the site and for the actual gravel extraction (91ME373F-2) including topsoil <br /> removal and stockpiling, overburden, raw material , and for loading and hauling <br /> these materials. In addition, a Fugitive Particulate Emissions Control Plan <br /> accompanies the permit. <br /> An inspection of the existing gravel pit and the proposed area fo exparLvion <br /> was made on February 18, 1994. During the inspecoion, it was noted that-ail' <br /> requirements for the extraction, storage, hauling and reclamation of materials <br /> were being met, It should also be noted that no air emission cuTplaints have <br /> been received concerning normal operation activities. One area of concern <br /> relating to dust control is the proper stabilization of material stockpiles <br /> and haul roads during high wind evontsr,_The exposed nature of the hilltop <br /> location makes the source s ect to high dust ss ons urrno Unusual <br /> weather related events. The saw concern been express or ,e <br /> nei�g�borring OrcHAk"esa Landfill . This Department believes that the source <br /> has demonstrated its ability to prevent high dust emissions durinq these <br /> events. <br /> Soma confusion apparently exists concerning Pg. 6 "Proposed Lard use" of the <br /> petitioners proposal prepared by Mr. Tan Logue: <br /> In paragraph 1, he states that the total mining activity would be. at least <br /> "15 years" but at maximum production levels, it is apparent that the amiotart of <br /> aggregate in the expansion area would only support such a level of activity <br /> for approximately 5 years. This point needs to be clarified by the <br /> petitioner. Currently, Plydssion Permit 914E373F-2 stipulates that "Production <br /> of gravel shall not exceed 6,000 tons/day and 200,000 tons/year," This will 11000 <br /> be changed to read "Production of aggregate shall not exceed5x# tons/day or <br /> 200,000 ton/year." Total material yields are estimated at ap ri5ximately <br /> 1,000,000 tons over the life of the operation, The majority of material <br /> extracted will be used as pit-run for fill and will therefore not be screened. <br /> Paragraph 3 fails to detail a mechanized screener for which the petitioner has <br /> an existing air emission, permit. This screener has been used s <br /> mainly for reclamation pun,��0 es��, and eaturees water spray bars for control of <br /> Ust emissions. I s permutteMproduction levels are not to exceed 162 ton/hr <br /> or 81,000 ton/year. In addition, a water truck featuring a staiuzing spray <br /> mist can be used in conjunction with the operation if necessary to ronttol <br /> emissions. <br />