According to ASTM D-4355, what is the minimum ultraviolet resistance rating for geotextiles used in Maryland?

For geotextiles used in Maryland, ASTM D-4355 specifies that a minimum ultraviolet (UV) resistance rating of 70% is necessary. This standard ensures that geotextiles can withstand solar radiation, which can significantly degrade materials over time. A UV resistance rating of 70% indicates that the geotextile will retain at least 70% of its original physical properties after exposure to UV radiation over a specified period. This is particularly important for ensuring the longevity and effectiveness of erosion and sediment control measures in the field, where geotextiles are often exposed to harsh environmental conditions.

By maintaining a minimum level of UV resistance, the integrity of the geotextile is preserved, aiding in its performance for various applications including filtration, separation, and stabilization in erosion and sediment control practices. This standard is set to protect against potential failure due to UV exposure, which could compromise project effectiveness and lead to significant environmental impacts if erosion control measures fail.