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7 <br /> <br />1 <br />t 5. Slope the operating area so that all water that enters it <br /> will flow to the drop-in. <br /> 6. Build a good berm all the way across the downstream edge of <br />' the fill. Be sure the fill slopes from the berm back to the <br /> drop-in. <br />' 7. Stabilize the berm and the edge of the fill as rapidly as <br /> possible. <br />' Actions <br /> The Company installed a 72-inch diameter concrete pipe in 1972 through <br /> about the lower 1/3 of the operations area. It was large enough to carry <br />' more than the 100-year flood. Leading into it, however, through the middle <br /> 1/3 of the area, only a 24-inch pipe was installed. That pipe was adequate <br /> for all normal flows but it was inadequate for major floods. An open <br />' channel was maintained through the upper 1/3 of the area. <br /> In 1974 the Company retained the firm of Leonard Rice, Consulting Water <br /> Engineers, to design a drainage system for the quarry that will accommodate <br />' the 100-year flood and local storm run-off. A 66-inch pipe has now been <br /> laid through the upper 2/3 of the operations area and a flood catchment <br />' and stilling basin is being prepared in the upper 1/3. (See report of <br />Leonard Rice Consulting Engineers, dated April, 1975). The lower quarry <br /> has been sloped to drain over the face of the fill through a heavily rocked <br /> channel. <br />1 <br /> Steps have been taken to stabilize the face of the hill (See subheading <br /> "Rehabilitation"). <br />' We have one additional recommendation that dates back to 1973 on which <br /> no action has been taken. Quite a large amount of soil and rock has been <br />' pushed into the drainage channel that enters the quarry from the northwest. <br />Heavy runoff from the watershed could cause a mudflow into the quarry. <br /> As the site in question will became part of the quarry later, this has <br /> little ecological significance. It could cause inconvenience and expense <br />' in operating the quarry. <br /> Vegetation and Wildlife <br />t Little can be done for the vegetation and wildlife that occupied the <br />quarry area. Revegetation of disturbed areas will be covered under the <br />heading, "Rehabilitation." <br />' Scenics <br />' Recommendations <br />Recommendations were made to minimize the detrimental impact on esthetics <br />' of the eight scenic detractants that were identified. Recommendations <br />1 <br />