1710 W MARINE VIEW DR 2024-01-03

pipe, sandbags, geotextile fabric and steel "T" posts. . Materials should be stockpiled and readily available before any site clearing, grubbing, or earthwork begins. A large contractor or project proponent could keep a stockpile of materials that are available for use on several projects. • If storage space at the project site is at a premium, the contractor could maintain the materials at their office or yard. The office or yard must be less than an hour from the project site. Design and Installation Specifications Depending on project type, size, complexity, and length, materials and quantities will vary. A good minimum list of items that will cover numerous situations includes: • Clear Plastic, 6 mil • Drainpipe, 6 or 8 inch diameter . Sandbags, filled . Straw Bales for mulching . Quarry Spalls . Washed Gravel . Geotextile Fabric . Catch Basin Inserts . Steel "T" Posts . Silt fence material . Straw Wattles Maintenance Standards . All materials with the exception of the quarry spalls, steel "T" posts, and gravel should be kept covered and out of both sun and rain. . Re -stock materials as needed. BMP C151: Concrete Handling Purpose Concrete work can generate process water and slung that contain fine particles and high pH, both of which can violate water quality standards in the receiving water. Concrete spillage or concrete dis- charge to waters of the State is prohibited. Use this BMP to minimize and eliminate concrete, con- crete process water, and concrete slurry from entering waters of the State. 2019 Stormwater Management Manual for Western Washington Volume 11 - Chapter 3 - Page 315