The document discusses using compost to improve erosion control and highway planting. It outlines that compost improves soil structure by increasing infiltration and water retention, which reduces erosion. It also improves biological activity and plant nutrient availability. The document reviews new specifications for compost, including tighter requirements for maturity, stability, and contaminants to improve quality control. It summarizes revisions made to various specifications regarding compost use for planting, erosion control, and other applications.