The first step in an assessment is to determine if mold is present. This is done by visually examining the premises. If mold is growing and visible this helps determine the level of remediation that is necessary. If mold is actively growing and is visibly confirmed, sampling for specific species of mold is unnecessary. These
When approaching a mold removal and cleaning project, one of the most important considerations is the potential risk from mold exposure. Mold counts in the air can be 10 to 1,000 times higher than normal during a removal or cleaning project. Because of the potential health risks from mold exposure, it is advisable, particularly for
Molds are simple, microscopic organisms, found virtually everywhere, indoors and outdoors. Molds can be found on plants, foods, dry leaves, and other organic material. Molds are needed for breaking down dead material. Mold spores are very tiny and lightweight, and this allows them to travel through the air. Mold growths can often be seen in
Control asbestos air monitoring involves testing the air to measure the level of respirable airborne asbestos fibers in an area during work on asbestos containing materials. Control monitoring is designed to test the effectiveness of control measures while work or removal is undertaken on asbestos containing materials.
Clearance asbestos air monitoring tests the air to measure the level of airborne asbestos fibers in an area following work or removal of asbestos containing materials. An area is ‘cleared’ when the level of airborne asbestos fibers is measured as being below 70 structures per millimeter squared (AHERA TEM). For PCM sampling and analysis using
Background asbestos air monitoring involves testing the air for respirable fibers prior to work, which may disturb known asbestos materials.
Asbestos air monitoring checks for the presence of respirable asbestos fibers in the air to assist with the assessment of exposure and the effectiveness of control measures. Respirable asbestos fibers are less than 3 μm wide and more than 5 μm long, and have a length to width ratio of more than 3:1. Generally undertaken
Polarized light microscopy (PLM) analysis is the most commonly accepted technique for analysing bulk samples for asbestos. Bulk material samples are typically collected during an asbestos survey by an EPA accredited inspector.The PLM analysis is based on optical mineralogy and uses a phase contrast microscope equipped with polarizing filters. Identification of asbestos is based on
Training for asbestos professionals is required under the EPA Asbestos Model Accreditation Plan (MAP) which EPA issued under the Asbestos Hazard Emergency Response Act of 1986 (AHERA). The MAP requires the use of trained and accredited asbestos professionals when conducting asbestos inspections or designing or conducting response actions at schools and public and commercial buildings. It
Transite is a trade name for Johns-Manville asbestos-cement products made to specific formulations. Over 95% of the chrysotile asbestos fiber mined worldwide is mixed with cement to form roofing, siding, pipes and many more products. These products have been used for decades throughout the world, but due to bans on their use in many countries