| 主权项 |
1. System for preventing the leakage of liquid from an outdoor work-site onto the ground around the perimeter of the work-site, the system comprising:
a load-supporting surface having an upper surface and including at least two interconnected, adjacent, stepped-configuration mats forming a perimeter thereof, said perimeter including at least four sides, at least first and second said perimeter sides each having an upper lip extending horizontally outwardly therefrom and configured to be spaced above the ground, and at least third and fourth said perimeter sides each having a lower lip extending horizontally outwardly therefrom and configured to rest on the ground, 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 and having a plurality of locking pin holes extending therethrough; a plurality of berm members configured to be positioned around said perimeter of said load-supporting surface and extend upwardly relative to said at least one mat, each said berm member being configured to releasably engage said load-supporting surface and including front and rear portions each having a respective bottom surface, said bottom surfaces of each said berm member being formed in a stepped-configuration wherein said bottom surface of said front portion is higher relative to said bottom surface of said rear portion, each said berm member having at least one locking pin hole extending therethrough; and a plurality of releasable locking pins, each said locking pin being configured to extend through an adjacent pair of said locking pin holes in either an adjacent pair of said mats or an adjacent said mat and adjacent said berm member and releasably couple them together. |
