What requirement is set for construction vehicles that need to cross a live water course frequently?

The requirement for construction vehicles that need to cross a live water course frequently is that a temporary stream crossing of non-erodible material must be provided. This is essential to minimize the impact on the surrounding environment and to prevent sedimentation and erosion in the watercourse.

Utilizing non-erodible materials, such as gravel or mats designed specifically for this purpose, helps create a stable crossing that does not disrupt the flow of the stream or damage the streambed. This method protects aquatic habitats and maintains water quality by reducing the introduction of sediments and contaminants into the water body. By ensuring that crossings are maintained with appropriate materials, the integrity of the watercourse can be preserved, making it an environmentally responsible practice in construction management.

Options that suggest not crossing at all or using bare soil do not address the need for access while ensuring environmental protection. Smaller pathways may not provide sufficient stability or protection for the watercourse. Thus, the provision of a temporary stream crossing using non-erodible materials is the correct and responsible requirement in this context.