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any pretreatment provisions and discuss the facility's ability to handle the volume and composition of <br />wastes, identifying any improvements necessary. <br /> <br /> NA <br /> <br />d. If the project requires disposal of liquid animal manure, describe disposal technique and location <br />and discuss capacity to handle the volume and composition of manure. Identify any improvements <br />necessary. Describe any required setbacks for land disposal systems. <br /> <br />NA <br /> <br />19. Geologic hazards and soil conditions <br /> a. Approximate depth (in feet) to ground water: 143’ minimum 160’ average before mining <br /> Approximate depth (in feet) to ground water: 60’ minimum 63’ average during mining* <br /> Approximate depth (in feet) to ground water: 115’ minimum 130’ average after reclamation* <br /> to bedrock: 370’ minimum 390’ average before mining <br /> to bedrock: 290’ minimum 295’ average during mining* <br /> to bedrock: 345’ minimum 360’ average after reclamation* <br /> <br /> *Over the actively mined portion of the subject property <br /> <br />Describe any of the following geologic site hazards to ground water and also identify them on the site <br />map: sinkholes, shallow limestone formations or karst conditions. Describe measures to avoid or <br />minimize environmental problems due to any of these hazards. <br /> <br />There are no known sinkholes or shallow limestone deposits or karst conditions at this site. The first <br />bedrock unit beneath the glacial deposits is the Eau Claire Formation, consisting of alternating <br />sandstone and shale layers. The Eau Claire formation is generally considered a confining unit. <br /> <br />b. Describe the soils on the site, giving NRCS (SCS) classifications, if known. Discuss soil granularity <br />and potential for groundwater contamination from wastes or chemicals spread or spilled onto the soils. <br />Discuss any mitigation measures to prevent such contamination. <br /> <br />According to the Sherburne County Soil Survey, the predominant soil types located on the site are fine <br />sandy loams, sandy loams, and loamy sands. The subject property is comprised predominantly of the <br />Emmert-Hayden complex soils. Chetek sandy loams, Emmert and Chetek soils and Milaca fine sandy <br />loams are also found on site. All of the site soils are granular soils that are well to excessively <br />drained. The majority of site soils have low moisture holding capacity and low natural fertility which <br />are serious limitations for crop production. <br /> <br />Granular materials are relatively permeable and can rapidly transmit contaminants through the soil <br />column to the ground water table. Mining activity will not involve the use of chemicals or hazardous <br />substances. There will be no fuel storage on the subject property. All fuel storage associated with the <br />existing operation is in accordance with MPCA standards. Equipment is kept in good repair and <br />routinely maintained. <br /> <br />All maintenance follows the company’s spill prevention policies. Used lubricating oil is collected by <br />facility personnel in leak-proof containers and hauled to a central collection point. The site operates <br />under a number of spill prevention and clean up requirements as defined by various federal and state <br />regulations. Company policy regarding spills is that any spill of oil, gasoline, diesel fuel, lubricant, or <br />asphalt cement is to be reported and cleaned up promptly. In addition, “toping-off” tanks of any kind <br />is not allowed under company procedures. This practice helps eliminate accidental spills during <br />materials transfer. <br /> <br />20. Solid wastes, hazardous wastes, storage tanks <br />a. Describe types, amounts and compositions of solid or hazardous wastes, including solid animal