Monitoring Asbestos Projects: Samples

Two area samples outside the asbestos project work area in uncontaminated areas of the building, remote from the decontamination facilities.

Primary location selection shall be within 10 feet of isolation barriers. Where negative ventilation exhaust ducting runs through uncontaminated building areas, one of the area samples will be required in these areas to monitor any potential fiber release.

Where adjacent non-work areas do not exist, an exterior area sample shall be taken; and one area sample within the uncontaminated entrance to each worker decontamination and waste decontamination enclosure system; and one area sample within five feet of the unobstructed exhaust from a negative pressure ventilation system exhausting indoors.