Características generales de un maestro de primaria 75

A summary of potential environmental effects for the alternatives is presented in Table 5.

TABLE 5.IMPACT SUMMARY

Impact Topic No Action Alternative Preferred Alternative

Rehabilitate Campground

Soil and Geologic Resources

The no action alternative would have a local long-term minor adverse effect on soils and geologic resources from continued erosion related to inadequate drainage and compaction associated with visitor use and poor campsite layout.

The preferred alternative would result in a local short-term moderate adverse impact to soils and geologic resources from earthwork and construction disturbances. Proposed drainage improvements would restore more natural drainage patterns and reduce the potential for accelerated erosion. Drainage improvements, road reconfiguration, and campsite layout improvements that reduce erosion and soil loss would have a long-term beneficial effect.

Impact Summary

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Impact Topic No Action Alternative Preferred Alternative

Rehabilitate Campground

Water Resources

The no action alternative would result in local long-term moderate adverse impacts on water resources from ongoing drainage and erosion problems associated with the lack of a proper drainage system at the campground.

The preferred alternative would have local short-term minor adverse effects on water quality and hydrology during construction due to surface disturbances that generate erosion and increase sediment in runoff. Long-term effects on water resources would be beneficial with campground drainage improvements.

Floodplains

The no action alternative would continue to have local long-term moderate adverse impacts from localized flooding in the campground and on private property north of the park. The flood risk in Black Rock Canyon downstream of the park would not change and would remain negligible.

Rehabilitation and drainage improvements in the campground would have no adverse effect on the Black Rock Canyon floodplain, and the risk to downstream homes for a 100- year flood event would not change. Drainage improvements would substantially reduce the potential for flood damage and personal risk within the campground and private property north of the park, thus impacts would be local, long-term, and beneficial.

Vegetation

The no action alternative would continue to have local long-term minor adverse impacts on vegetation in Black Rock campground due to erosion from uncontrolled runoff and flooding in and near the campground, poor campsite definition, and visitor use.

The preferred alternative would have local short-term moderate adverse effects on vegetation from construction disturbances during campground rehabilitation.

Campground improvements would result in a local long-term beneficial effect from installing drainage channels that reduce erosion, reconfiguring the campsite layout to define visitor use areas, and revegetating currently disturbed areas and temporary construction disturbances with native vegetation. Weed establishment in areas of disturbed soil is possible, but would be minimized with weed- control BMPS.

Wildlife

The no action alternative would have local long-term minor adverse impacts on wildlife habitat in Black Rock campground due to erosion from uncontrolled runoff and flooding, poor campsite definition, and visitor use.

The preferred alternative would have local short-term moderate adverse effects on wildlife habitat from construction disturbances and activities that impact habitat or displace species. Campground and drainage

improvements would result in local long-term beneficial effects due to a reduction of erosion from drainage improvements, better campsite layout, and restoration of disturbed areas, which would improve soil stability and native vegetation establishment.

ALTERNATIVES

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Impact Topic No Action Alternative Preferred Alternative

Rehabilitate Campground

Special Status Species

The no action alternative would have local long-term minor adverse impacts on special status species habitat in Black Rock campground due to erosion from uncontrolled runoff and flooding in the campground and visitor use.

The preferred alternative would have local short-term moderate adverse effects on the threatened desert tortoise during

construction. Campground improvements would result in local long-term beneficial effects on special status species, including the desert tortoise, from drainage

improvements, better campsite layout, and restoration of disturbed areas that reduce erosion, improve soil stability, and aid in the establishment of native vegetation.

Implementing the preferred alternative would result in a USFWS determination of “may affect, likely to adversely affect” for the desert tortoise. Cumulative effects would be regional and local, long-term, minor, and adverse.

Visitor Use and Experience

Effects on visitor use and experience under the no action alternative would be

parkwide, long-term, moderate, and adverse as a result of periods of localized flooding that affect use of the campground and damage campground facilities; poor traffic circulation and campsite layout; and degradation of campground facilities that lead to less visitor use and place greater strain on other park campgrounds.

Campground rehabilitation including reduced flooding from drainage improvements; new roads with better traffic circulation; improved campsite layout with designated group, walk- in, and horse campsites; additional comfort stations; trailhead parking; and other amenities would substantially improve the quality of visitor use and experience. These improvements would have a parkwide long- term beneficial effect on the quality of the visitor use and experience. A parkwide short- term moderate adverse effect on visitor use and experience would occur with

implementation of each phase of rehabilitation due to reduced campsite availability and construction disturbance.

Public Health, Safety, and Park Operations

The no action alternative would result in a parkwide, long-term, moderate adverse effect on public health, safety, and park operations by not addressing the inadequate drainage system, periodic flooding, poor campsite and road layout, and other deteriorating infrastructure.

The preferred alternative would result in local long-term beneficial effects on public health, safety, and park operations by decreasing the potential for flooding and improving

campground roads, campsites, infrastructure, and amenities.

Visual Resources

The no action alternative would have local long-term moderate adverse effects on visual quality within the campground as a result of flood events that cause erosion, sedimentation, and damage to natural resources and infrastructure, as well as impacts on adjacent private property. Cumulative effects would be local, long- term, moderate, and adverse.

The rehabilitation Black Rock campground would result in local short-term moderate adverse effects in visual quality near the campground from earthwork and

construction-related disturbances. Over the long term, the preferred alternative would have a local long-term beneficial effect on visual quality at the campground from new roads, better campsite layout, and drainage improvements that reduce erosion and property damage.

Impact Summary

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Impact Topic No Action Alternative Preferred Alternative

Rehabilitate Campground

Socioeconomics and Gateway Communities

The no action alternative would have potential long-term minor adverse effects on the regional economy from flood-related damage to the campground that leads to reduced visitor use and tourism-related spending in the Yucca Valley area. Residents in Sky Harbor also would be adversely affected by inadequate drainage in the campground that leads to property damage from stormflow along Black Rock Canyon Road.

The preferred alternative would have a long- term beneficial effect on the regional

economy from campground rehabilitation that draws visitors and tourism-related spending. Sky Harbor neighborhood residents near the campground also would experience a long- term beneficial effect on the quality of their access and use of the park, as well as a substantial reduction in flooding risk along Black Rock Canyon Road. Short-term minor adverse effects on residents near the park and along park access roads would occur from noise and construction traffic.

ALTERNATIVES

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AFFECTED ENVIRONMENT AND ENVIRONMENTAL