Given: Earthwork errosion controls can account for significant time and money and are required according to jurisdictional regulations for the protection of streams and water impoundments. Which of the following is not used to provide errosion controlfor streams and impoundments:

Given: Earthwork errosion controls can account for significant time and money and are required according to jurisdictional regulations for the protection of streams and water impoundments. Which of the following is not used to provide errosion controlfor streams and impoundments: