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1 <br />1G <br />' <br /> Recommendations <br />' Most of the impacts on the geology of the area are an unavoidable part <br /> of the operation. They are part of environmental cost of havinn rock <br /> products. Only surficial formations can be partly replaced. See <br /> "Reclamation Plan." <br /> Water <br />' Nature of Impact <br /> IJater factors that are subject to impact include surface water quality <br />' and flood damages. Both impacts are felt both on-site and off-site. <br /> Surface waters of Strain Gulch acquire some dissolved solids in passing <br /> through the quarry area but this has little ecological significance. <br />' Runoff-producing rains wash dust and other sediments from the quarry area <br /> which help muddy the waters of Strain Gulch temporarily. The sediments <br /> also have little eco]ogical significance. Strain Gulch receives sediments <br /> from many sources during storm runoff conditions, but the run-off is so <br /> small in volume compared to Bear Creek that it has little effect on the <br /> waters of Bear Creek. <br />' ation ceases <br />Th <br />are t <br />and sho <br />hen th <br />i <br />t <br />ld <br /> cease w <br />e oper <br />. <br />ese <br />mpac <br />s <br />emporary <br />u <br /> The quarry has a potential to cause severe flood damage both on-site and <br />' off-site. Flood damages can be avoided, however, by providing for passage <br /> through the quarry of the largest likely flood flow from Strain Gulch water- <br /> shed. <br />1 F <br /> uture Impacts <br /> The effects of the quarry area on surface water quality are expected to <br />' continue for the duration of the operation, but they should have no <br /> significant effect on the quality of bear Creek water. <br />' The potential for flood damage will remain. The Company is in process <br /> of providing for passage of the 100-year flood through the operating <br /> area, however. If this is completed and maintained properly, the danger <br /> of flood damages being affected by the operation should be mostly <br /> eliminated both on-site and off-site. <br />1 Recommendations <br />Complete as soon as possible the flood-water passage system planned <br />' for the project area by Leonard Rice Consulting Water Engineers. Maintain <br />the water-passage facilities in serviceable condition at all times in the <br />future. <br />' Maintain the newly-constructed drainage channel from the quarry working <br />area into Strain Gulch to assure efficient drainage of the working area <br />into Strain Gulch Creek at all times. <br />1 <br /> <br />