Large-sized containment berm made of reinforced geomembrane. It features excellent rip, tear and puncture resistance for demanding applications and rough terrain. It is durable and sturdy unit is constructed of chemical-resistant materials. It is repairable and compatible with acids, water, oils and solvents, the berm can be cleaned after use and stored for future use. It is ideal for large-scale spill containment beneath tanker trucks, roll-off containers and more.