Patent ID: 9745124
Date: 2017-08-29
CPC Classifications: B65D,E01C,E01H,E02B,E02D,E04H,H05K

Claim:
1. A system for preventing the leakage of liquid from an outdoor work-site onto the ground around a perimeter of the work-site, the system comprising: a load-supporting surface having an upper surface and including at least two adjacent, reusable mats forming a perimeter thereof, said perimeter of said load-supporting surface including at least four sides, said load-supporting surface being arranged and adapted to support the weight of people, vehicles and equipment thereupon, each said mat being constructed of impermeable plastic; a plurality of berm members configured to be positioned at least partially around said perimeter of said load-supporting surface, extend upwardly relative to said-mats and prevent liquid disposed upon said upper surface of said load-supporting surface from leaking off of said load-supporting surface around said perimeter of said load-supporting surface; and at least one liquid drain assembly releasably engageable with said load-supporting surface and configured to collect liquid disposed upon said load-supporting surface and provide controlled drainage of liquid off of said load-supporting surface.