Negative pressure asbestos removal with localized make-up air

A method of removing airborne contaminant material from a work area where contaminant material is being removed, said method comprising the steps of:

• isolating said work area from the surrounding environment;
• providing at least one entrance into said isolated work area;
• creating a negative pressure differential between said isolated work area and the area outside said work area;
• introducing air into said isolated work area directly to the vicinity where said contaminant material is being removed in order to entrain airborne contaminant material created when said contaminant material is being removed;
• providing manifold means between said isolated work area and said area outside said work area for controlling the introduction of air into said work area and for directing the flow of air to the vicinity where said contaminant material is being removed, said manifold means being comprised of:
• a backboard positioned between said work area and the area outside said work area, said backboard having at least one opening therethrough,
• duct means extending into said work area to the vicinity where said contaminant material is being removed for providing air directly thereto,
• sleeve means connected to said duct means and in communication with said opening through said backboard extending into said work area for connecting said duct means to said backboard in communication with said opening, and
• air flow control means within said sleeve means for controlling the flow of air from outside said work area into said work area through said sleeve means and said duct means;
• and
• filtering the air within said isolated work area to remove said entrained contaminant material therefrom.