Mr. Gary Casuccio, Senior Scientist at RJ Lee Group, Inc., will present “A Forensics Approach to Investigations of Nuisance Dust” at Platform Session 3 – Air, Environment, Forensics at the 22nd Annual International Conference on Soil, Water, Energy & Air sponsored by the Association for Environmental Health and Sciences (AEHS). For more than 20 years, this conference has provided a forum to facilitate the exchange of information in technology, scientific achievements, and environmental regulation programs. It focuses on environmental issues related to soil, water, energy, and air with attendees from professions such as state and federal regulatory agencies, environmental engineering and consulting firms, the petroleum and chemical industries, military and academia.
Mr. Casuccio’s career spans more than 25 years and 100 publications in the field of particulate analysis. He has been an advisor to the U.S. EPA on the analysis of particulate matter using SEM and CCSEM techniques, conducted studies on particulate collected in NASA space shuttles, and designed a study for the analysis of ambient samples from Kuwait for the U.S. Army. Mr. Casuccio’s presentation will take place on Wednesday morning, March 21 during Platform Session 3 (8:30 A.M. to 12 noon).
Although most ambient particulate matter studies today are focused on PM2.5 (particulate matter <2.5 µm), PM10 (particulate matter <10 µm), or coarse PM (PM10-2.5), nuisance dust continues to be of concern in areas located near particulate producing industrial facilities. Studies involving the investigation of nuisance dust can be complex as there are no standard definitions, universal monitoring methods, or National Ambient Air Quality Standard (NAAQS) standards to provide guidance. It is becoming generally accepted that particulate matter greater than 10 µm may be considered nuisance dust, however particles greater than 30 µm (or agglomerates of smaller particles) are more typically associated with annoyance or nuisance on personal property.
The collection of nuisance dust can involve the use of both active samplers (e.g., TSP and PM10), as well as passive samplers (e.g., dustfall monitor and deposition tape samplers) and surface samplers (ghost wipes and adhesive lift media). A key component to the forensics approach in identifying the origin of the nuisance dust is the establishment of analytical signatures from sources of interest. Microscopy is a powerful analytical tool in nuisance dust studies as it can provide information on an individual particle basis (size, morphology and composition) that can be valuable in speciating the particulate matter. Characterization of the source and receptor samples using both manual and automated microscopy can be applied as an effective method to evaluate source/receptor relationships.
This presentation will provide an overview of several case studies performed by RJ Lee Group related to the investigation of nuisance dust. These studies involve the use of various sampling approaches combined with microscopic examination of the particulate matter.