Patent Number: 06132356&
Section: claims

1. A hazardous material containment apparatus, which comprises: (a) a vapor and aerosol containment vessel comprising a cover and side walls attached around a perimeter of said cover, which cover and side walls define an open central cavity therein; each of said cover and side walls being composed of material which resists penetration of gases, vapors, aerosols and airborne particulates therethrough;  (b) a tube extending through said vessel, said tube having a first end open at a point inside said cavity and a second end at a point outside said vessel; and  (c) means attached to said second end of said tube for extracting and filtering a hazardous material from within said cavity to outside said vessel through said tube, said means maintaining a pressure within said cavity which is less than atmospheric pressure; and wherein said apparatus is portable.  (a) surrounding said hazardous material with a hazardous material containment apparatus which comprises a vapor and aerosol containment vessel comprising a cover and side walls attached around a perimeter of said cover, which cover and side walls define an open central cavity therein; each of said cover and side walls being composed of material which resists penetration of gases, vapors, aerosols and airborne particulates therethrough; a tube extending through said vessel, said tube having a first end open at a point inside said cavity and a second end at a point outside said vessel; means attached to said second end of said tube for extracting and filtering a hazardous material from within said cavity to outside said vessel through said tube, said means maintaining a pressure within said cavity which is less than atmospheric pressure, and wherein said apparatus is portable; and  (b) extracting and filtering the hazardous material from within said cavity to outside said vessel through said tube. 2. The apparatus of claim 1, wherein said means for extracting and filtering said hazardous material through said tube comprises a pump and filter attached to said tube. 3. The apparatus of claim 1 further comprising a hazardous material sampling port extending through the vessel. 4. The apparatus of claim 1 wherein the side walls are substantially rigid. 5. The apparatus of claim 1 wherein the side walls are flexible. 6. The apparatus of claim 1 wherein the side walls are inflatable. 7. The apparatus of claim 1 further comprising an apron attached to and surrounding the side walls at a wall edge opposite to the cover. 8. The apparatus of claim 7 further comprising means for attaching the apron to a foundation. 9. The apparatus of claim 1 further comprising an injection orifice extending through the vessel. 10. The apparatus of claim 1, wherein said cover and side walls are comprised of a material selected from the group consisting of rubber and plastics. 11. A method of containing a hazardous material, which comprises: 12. The method of claim 11, wherein said means for extracting and filtering said hazardous material through said tube comprises a pump and filter attached to said tube. 13. The method of claim 11 further comprising a hazardous material sampling port extending through the vessel. 14. The method of claim 11 wherein the side walls are substantially rigid. 15. The method of claim 11 wherein the side walls are flexible. 16. The method of claim 11 wherein the side walls are inflatable. 17. The method of claim 11 further comprising an apron attached to and surrounding the side walls at a wall edge opposite to the cover. 18. The method of claim 17 further comprising means for attaching the apron to a foundation. 19. The method of claim 11 further comprising an injection orifice extending through the vessel. 20. The method of claim 19, further comprising injecting hazard mitigation materials through said injection orifice into said vessel. 21. The method of claim 11, wherein said cover and side walls are comprised of a material selected from the group consisting of rubber and plastics.