Is a tank basin required for buried diesel SF double-wall tanks?
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For diesel underground storage tanks with a double-wall design (steel on the inside and fiberglass reinforced plastic on the outside), there is no mandatory requirement to have a tank foundation
I see that for the renovated underground gasoline and diesel tanks at gas stations, tank basins are also provided.
Single-layer steel storage tank; no conversion to a double-layer tank is required, but an anti-seepage pit is needed