Method of constructing a secondary containment area

1. A method for constructing a secondary containment area for above ground storage tanks, comprising the steps of:

(a) providing a site for an above ground storage tank;

(b) leveling said site;

(c) laying a foundation bed on said site to form a first layer of material;

(d) building a retaining barrier around said site;

(e) covering said foundation bed and said retaining barrier with a liner cloth to form a second layer of material;

(f) securing said liner cloth to said retaining barrier;

(g) coating said liner cloth and said retaining barrier with at least one coat of polyurea to form a polyurea coating thickness of at least 30 mils, wherein said polyurea coating forms a third layer of material; and

wherein said method result is in the formation of a solid, impermeable layer throughout the first, second and third layers of material.

2. The method for constructing a secondary containment area of claim 1 , wherein the foundation bed comprises dirt.

3. The method for constructing a secondary containment area of claim 1 , wherein the foundation bed comprises gravel.

4. The method for constructing a secondary containment area of claim 1 , wherein the liner cloth comprises a geotextile fabric.

5. The method for constructing a secondary containment area of claim 1 , wherein the liner cloth comprises a blown fabric.

6. A method for applying a polyrurea coating for the construction of a secondary containment area having a liner cloth and retaining barrier, said method comprising the steps of:

(a) building a retaining barrier having inner and outer walls;

(b) securing a liner cloth to said retaining barrier;

(c) applying a light base coat of polyurea to the secondary containment area;

(d) applying at least two more coats of polyurea to the liner cloth and retaining barrier so that the inner and outer walls of the retaining barrier comprise a polyurea coating of at least 30 mils; and

wherein said applying steps of(c) and (d) are performed with a spray device that operates at a temperature of about 165 degrees Fahrenheit to create a solid, impermeable layer impervious to liquid.

7. The method of claim 6 , wherein said step (a) comprises building curved retaining barriers walls.

8. The method of claim 6 , wherein said step (a) comprises building straight retaining barriers walls.

9. The method of claim 6 , wherein said step (b) comprises choosing a liner cloth comprised of a fabric with some degree of permeability.

10. The method of claim 6 , wherein said applying steps of (c) and (d) are performed with a spray device that operates at a pressure of about 1800 pounds per square inch.

11. The method of claim 6 , wherein said applying step (d) results in a thickness of about 60 mils.