1622 E MARINE VIEW DR WHOLE SITE 2022-02-01

• If using self -installed washout facilities, verify plastic liners are intact and sidewalls are not damaged. • • If using prefabricated containers, check for leaks. • Washout facilities shall be maintained to provide adequate holding capacity with a minimum freeboard of 12 inches. • Washout facilities must be cleaned, or new facilities must be constructed and ready for use once the washout is 75% full. • If the washout is nearing capacity, vacuum and dispose of the waste material in an approved manner. • Do not discharge liquid or slurry to waterways, storm drains or directly onto ground. • Do not use sanitary sewer without local approval. • Place a secure, non -collapsing, non -water collecting cover over the concrete washout facility prior to predicted wet weather to prevent accumulation and overflow of precipitation. • Remove and dispose of hardened concrete and return the structure to a functional condition. Concrete may be reused on -site or hauled away for disposal or recycling. When you remove materials from the self -installed concrete washout, build a new structure; or, if the previous structure is still intact, inspect for signs of weakening or damage, and make any necessary repairs. Re -line the structure with new plastic after each cleaning. Removal of Temporary Concrete Washout Facilities When temporary concrete washout facilities are no longer required for the work, the hardened concrete, slurries and liquids shall be removed and properly disposed of. • Materials used to construct temporary concrete washout facilities shall be removed from the site of the work and disposed of or recycled. • Holes, depressions or other ground disturbance caused by the removal of the temporary concrete washout facilities shall be backfilled, repaired, and stabilized to prevent erosion. • Volume II — Construction Stormwater Pollution Prevention - August 2012 4-50