Underground storage vault

Liquid containment apparatus comprising:

• (a) a base having a plurality of sidewalls that project from a bottom wall to define an open cavity;
• (b) tank means mount d within said open cavity for containing a liquid;
• (c) means for defining a secondary storage space between said tank means and the side and bottom walls of said base;
• (d) an annular chase having raised sidewalls that border a through aperture that extends substantially the full length of said open cavity and that mounts to the sidewalls of said base, wherein said chase includes a plurality of pre-mounted conduits that couple to said tank means, wherein said chase includes a conduit cast into the walls thereof and having an access port to said conduit, wherein said chase includes an aperture through a sidewall and a leakage containment conduit having a bore aligned to the aperture and sealed to the chase sidewall an wherein a conduit that couples to one of said plurality of pre-mounted conduits extends through said leakage containment conduit;
• and
• (e) a plurality of cover that mount to said chase sidewalls to cover said open cavity and wherein one of said plurality of covers includes a liquid impermeable pan having a bottom and that contains a plurality of seals fitted to pipes that extend through the pan bottom.

A Liquid containment apparatus comprising:

• (a) a base having a plurality of sidewalls that project from a bottom wall to define an open cavity;
• (b) tank means mounted within said open cavity for containing a liquid;
• (c) a continuous sheet liquid impermeable membrane mounted between said tank means and said sidewalls, which membrane defines a secondary storage space and terminates at a peripheral edge of said sidewalls to contain spilled liquid in said secondary storage space;
• (d) an annular chase having raised sidewalls that border a through aperture that extends substantially the full length of said open cavity and that mounts to the sidewalls of said base and wherein said chase includes a plurality of pre-mounted conduits that couple to said tank means;
• (e) means mounted in liquid tight relation to said chase sidewalls and communicating with said secondary storage space for containing conduits penetrating the chase sidewalls and leakage from said conduits;
• and
• (f) a plurality of covers that mount to said chase sidewalls to cover said open cavity.

Liquid containment apparatus comprising:

• (a) a base having a plurality of sidewalls that project from a bottom wall to define an open cavity;
• (b) tank means mounted within said open cavity for containing a liquid;
• (c) means for defining a secondary storage space between said tank means and the side and bottom walls of said base;
• (d) an annular chase having raised sidewalls that border a through aperture that extends substantially the full length of said open cavity and that mounts to the sidewalls of said bases, wherein said chase includes a plurality of pre-mounted conduits that couple to said tank means, and a conduit mounted in liquid tight relation to the chase sidewalls and communicating with said secondary storage space for containing conduits penetrating the chase sidewalls and coupling to said pre-mounted conduits and directing leakage from said conduits;
• (e) a plurality of covers that mount to the chase sidewalls to cover said open cavity;
• and
• (f) a liquid dispenser mounted to one of said plurality of covers and coupled to said tank means.

Liquid containment apparatus comprising:

• (a) a base having a plurality of sidewalls that project from a bottom wall to define an open cavity;
• (b) tank means mounted within said open cavity for containing a liquid;
• (c) means for defining secondary storage space between said tank means and the side and bottom walls of said base;
• (d) an annular chase having raised sidewalls that border a through aperture that extends substantially the full length of said open cavity and that mounts to the sidewalls of said bases wherein said chase includes a plurality of pre-mounted conduits that couple to said tank means;
• (e) means mounted in liquid tight relation to said chase sidewalls and communicating with said secondary storage space for containing conduits penetrating the chase sidewalls and coupling to said pre-mounted conduits and directing leakage from said conduits and leakage from said conduits;
• and
• (f) a plurality of cover that mount to said chase sidewalls to cover said open cavity.