Method for collecting and storing liquid from along a railroad track section

A method of collecting and storing liquids, such as petroleum based oil, from along a railroad track section, comprising, providing a containment reservoir adjacent to and beneath the track section, said reservoir including a flexible liquid impervious liner defining a containment space for collecting the liquid in the reservoir and preventing its escape into adjacent land areas, said liner comprising a layer of liquid pervious fabric material having on at least one of its sides an attached layer of liquid impervious material, such as rubber which is resistant to oil degradation, providing a relatively coarse particle bed located on said liner to generally fill said containment space, providing a layer of liquid pervious flexible fabric filter material covering the open top of said bed for preventing contaminant material of predetermined size from entering said bed, providing drain means including an apertured drain member for removing liquid from said reservoir and conduit means coacting in liquid communicating relation with said drain member generally adjacent the lowermost level of said containment space, extending said conduit means through the reservoir wall defined by said liner, providing a filter in coacting relation with said drain member and filtering liquid passing thereinto from the containment space, providing sealing means coacting between said liner and said conduit means for preventing inadvertent escape of liquid into the adjacent land areas past said liner at said location of extension of said conduit means through the reservoir wall, providing a storage reservoir in spaced relation to said containment reservoir, and transferring liquid collected in said containment reservoir from the latter via said drain means to said storage reservoir.