Biosolids may not be applied to slopes greater than what percentage?

The correct answer is based on the guidelines regarding the application of biosolids on sloped terrain to prevent runoff and environmental contamination. Applying biosolids on slopes greater than 15% significantly increases the risk of nutrient runoff into water bodies, which can lead to water quality issues such as eutrophication. This is why the application limit is set at 15%.

While slopes of 10%, 20%, and 25% may also pose risks, the established standard for biosolid application is specifically 15%. This limit reflects a balance between effective nutrient management and the need to safeguard water resources. Understanding these guidelines is crucial for making informed decisions about biosolid applications in agricultural practices, especially in Maryland where regulations are in place to protect the environment.