The design, testing, installation and maintenance of grading, drainage and erosion control operations and facilities shall meet the minimum requirements set forth in the Standards listed herein. Soils. ASTM Standards, Volume 0408 Titled Natural Building Stones, Soil and Rock, by the American Society for Testing and Materials, Philadelphia. ASTM Designation D-1556-82E, Density of Soil in Place by the Sand-Cone Method. ASTM Designation D-698-82E, Moisture-Density relations of Soils and Soil Aggregate Mixtures Using 5.5 -lb. (2.50 kg) Rammer and 12 in. (457 MM) Drop. Maryland Department of the Environment, Maryland Standards and Specifications for Soil Erosion and Sediment Control (as amended). Drainage. Subtitle 23 titled "Roads and Sidewalks," the Prince George's County Code; Prince George's County, Maryland, Stormwater Management Design Manual (as amended). Erosion Control. Soil Survey of Prince George's County, Maryland issued December 2009 Maryland Standards and Specifications for Soil Erosion and Sediment Control. Maryland Department of the Environment, Current Maryland Standards and Specifications for Soil and Erosion Control. Subtitle 25 titled "Trees and Vegetation," the Prince George's County Code, adopting by reference the "Prince George's County Woodland Conservation and Tree Preservation Policy Document."