Collecting and Reporting Quality Data for Vapor Intrusion

TestAmerica Ask the Expert Webinar Series
June 16, 2011
1:30pm EST

The process of systematically evaluating the indoor inhalation risk from sub-surface vapors began with the EPA's publishing of "OSWER Draft Guidance for Evaluating the Vapor Intrusion to Indoor Air Pathway from Groundwater and Soils (Subsurface Vapor Intrusion Guidance)" in 2002. That document served as the genesis for the multitude of regulations, programs and methods that are being employed in this arena today.

As these regulations and programs have developed and matured, the clarity to the overall process of collecting and reporting quality data has become a difficult highway to navigate. This presentation will focus on clearing the landscape to facilitate navigation through the sample collection and data reporting process in support of these regulations and programs.

The presentation will be given from the perspective of an environmental testing laboratory and our 10 years of experience supporting Vapor Intrusion investigations.

Register Now for the presentation

Dust Sampling Methods and Equipment

Ask the Expert Question:
There are abandoned mine land sites in our area that are often used for recreational activities. These activities generate a great deal of dust. The sediments and mine wastes in these areas are potentially contaminated with heavy metals and could put people using these public areas at risk. Can you provide any information on methods to sample the dust? Also, where can I obtain the equipment to do the sampling?

Experts Response:
There are several considerations for deciding upon how to approach monitoring the dust.

The first consideration is: what will you compare your data to with regard to health standards or risk criteria? The answer will help to define how you will collect the samples. For example, it may make sense to compare your results to the National Air Quality Standard for the particular heavy metals contamination present, and/or the PM10 standard for Total Particulate. Some counties in the US even have their own ambient air quality criteria.

Your choice of criteria will dictate how the samples should be collected; the detection levels required and for what time period the samples must be collected. As an example, the National Air Quality Standard for Lead requires that a sample be collected for a 24 hour period.

A second consideration is: do you have a source of electrical power, or will it be necessary to use sampling equipment that is battery powered? Battery powered equipment may pose a problem if your sampling period must cover 24 hours.

TestAmerica does have air sampling pumps available for clients depending upon your sampling criteria. Click here to contact our expert, Mike McGee to inquire about the equipment and methods available.

View Mike McGee's Experts profile