WashoutPan is watertight and features angled interiors so a liner is not necessary. Using a liner is not eco-friendly and concrete washout material contaminated with plastic can not be recycled and result in very expensive landfill fees. The EPA has created a informative BMP on how to properly handle concrete washout solids and liquids. You can view more by visiting the EPA Storm Water site.
Instructions for using WashoutPan™ and handling the liquids and solids from concrete washout:
1) If using lifting “D” rings always inspect welds on the top and bottom along with the ring itself for damage. Do not use for lifting if there are signs of damage on the WashoutPan™.
2) Spray interior of the WashoutPan™ with a form release or vegetable oil before each use. This will allow the washout to release after it cures in the pan.
3) Washout water must be properly handled or your site can face fines and or shutdown by regulatory officials. Washout water can be pumped into concrete mixer trucks, vacuumed by concrete washout or sanitary service companies or left to evaporate. The clear washout water contains chemicals, metals and high PH and should never touch the ground.
4) Once material is dry, dump pan upside down to remove solids. Solids can be placed into concrete debris boxes and taken to a facility that crushes concrete for recycling. Keep diversion receipts to meet diversion recycling requirements for programs like LEED. Don’t landfill clean materials.