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Secondary leak containment for petroleum dispensing stations utilizes a rigid container mounted in the foundation beneath the station. The container has an outwardly directed flange positioned at the midplane of the upper concrete slab. A removable cover and panel are used to prevent concrete from e

Secondary leak containment for petroleum dispensing stations utilizes a rigid container mounted in the foundation beneath the station. The container has an outwardly directed flange positioned at the midplane of the upper concrete slab. A removable cover and panel are used to prevent concrete from entering the container when the concrete slab is poured and formed. The container rests upon a first depth of compacted soil used to cover the petroleum supply tanks and is surrounded and supported laterally by a second depth of soil and or gravel that extends upwardly to support the concrete slab.

대표청구항 ▼

A system for providing leak containment for petroleum dispensing apparatus mounted to a foundation slab having an upper surface comprising an elongated rigid container having an open top portion positioned within said foundation slab and beneath said dispensing apparatus, said open top portion being

A system for providing leak containment for petroleum dispensing apparatus mounted to a foundation slab having an upper surface comprising an elongated rigid container having an open top portion positioned within said foundation slab and beneath said dispensing apparatus, said open top portion being spaced downwardly from said upper surface a predetermined distance said container having at least one vertical side wall contiguous with said top portion and an oppositely disposed bottom portion integral with said side wall, said top portion having a generally horizontal outwardly extending flange for securing said container to said foundation slab said flange being entirely embedded in said foundation slab and being spaced downwardly from said upper surface. A method for providing leak containment for petroleum dispensing apparatus mounted on a concrete slab foundation and having a petroleum inlet supply conduit comprising the steps of: A. positioning a rigid petroleum impervious container having a flange at its upper end beneath the dispensing apparatus; B. sealing the inlet supply conduit to and through a side wall of the container; C. embedding the flange of the container generally medially of the thickness of the concrete slab foundation. A method for providing leak containment for petroleum dispensing apparatus mounted on a slab foundation which overlies a soil foundation and having a petroleum inlet conduit therethrough comprising the steps of: A. excavating a portion of the soil foundation adjacent to the dispensing apparatus; B. disconnecting the petroleum inlet conduit from the dispensing apparatus; C. positioning a petroleum impervious container beneath the dispensing apparatus D. sealing the inlet supply conduit to and through a wall of the container; E. connecting the petroleum inlet conduit to the dispensing apparatus; and F. refilling the excavated portion of the soil foundation.