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<br /> <br /><:-.. <br /> <br />N <br />t.:l <br />~.l..., <br />o <br /> <br /> <br />Environmental <br />Protection <br /> <br />. <br /> <br /> <br />. <br /> <br />Use of Fire Use of fires on river trips <br />is limited to protect the canyon and beaches. The <br />need for this restriction has arisen because of <br />scarce supplies of driftwood and the charcoal <br />residue that had been accumulating on beaches. <br />No increased evidence of charcoal, burned wood, <br />firewood collection, or wildfire will be permitted. <br />When fires are allowed, they must be contained in <br />fire pans. <br />Human Waste/Refuse Disposal The aesthetic <br />and health problems associated with human waste <br />are a major concern associated with river use. <br />All human waste must be hauled from the canyon. <br />Refuse and garbage attracts insects, rodents, <br />and birds and fouls beaches. To maintain a health- <br />ful, quality river running experience, all trash and <br />litter must be carried out of the canyon. Liquid <br />waste, such as dishwater, will be strained through <br />a fine screen into the Colorado River. <br />Removal of human waste and refuse gives river <br />runners the feeling that they are the first ones on <br />the beach, and therefore is a key NPS aim in this <br />plan. <br />Use of Soap Protection of the water quality <br />in the Colorado River and sidestreams is a major <br />objective. To the extent that users can prevent it, <br />water quality degradation should not occur. <br />Soap at relatively low concentrations impairs <br />the breeding of native fish"and leads to accelerated <br />growth of aquatic vegetation with associated decreases <br />in stream oxygen content. Use of soap in small <br />sidestreams also detracts from aesthetic quality. <br />For this reason, soap use will be prohibited in any <br />sidestreams or within 100 yards of the confluence <br />of any sidestreams with the Colorado River. <br />Vegetative Clearing/Erosion Damage to vegetation <br />in the riparian zone and in the adjacent desert is a <br />chief environmental concern. It is a goal of this plan <br />to stop any widening of existing camping areas so that <br />the understory, ground cover and species diversity in <br />this zone are protected. <br />No damage should occur in the adjacent desert <br />zone except those impacts from the single trails to <br />attraction sites. Human-caused erosion due to <br />vegetative clearing will be prevented. <br />Aesthetic Considerations The NPS will <br />minimize placement of any signs, rock walls, or <br />other management intrusions along the river to <br />retain a natural feeling. The only exception to <br />this objective is construction or marking of single <br />trails to eliminate the multiple, haphazard trails. <br />Single trails will be estahlished as unobtrusively <br />as possihle. <br /> <br />AOR <br />Section <br />III A.l <br /> <br />AOR <br />Section <br />III A.Z. <br /> <br />AOR <br />Section <br />III A.3. <br /> <br />11 <br /> <br />- <br />