SOIL VAPOR INTRUSION/TO-15

Our analytical laboratory can meet your analysis needs for Volatile Organic Compounds (VOCs) in air for a variety of purposes. Using EPA Method TO-15, we have the capability to measure 63 compounds down to sub-parts per billion by volume (ppbv) levels. This analysis is applicable to samples of soil vapor, indoor air, ambient air and potentially investigative work.

Sample canisters are available in either three- or six-liter sizes, and each is equipped with a built-in pressure gauge to provide real-time feedback during sample collection and to avoid cross contamination. Braun Intertec follows a maximum holding time of 14 days for TO-15 samples.

The laboratory standard sample turnaround time of 10 business days for environmental samples also applies to air canisters. Need results more quickly? Rush turnaround is available for an additional charge. Flow controllers and certified canisters are also available. A unique chain of custody form specific to air canisters is used by our laboratory to properly document specific sampling parameters. Canisters should be reserved in advance, if possible, to facilitate planning of sampling projects. Please contact us to make arrangements for your specific needs.

Applications for VOC Analysis by TO-15

Soil Vapor Intrusion
Soil vapor intrusion is the migration of volatile organic compounds (VOCs) from soil into the overlying building spaces where we live and work. VOCs include compounds found in fuels like gasoline and solvents. There is concern that long-term exposure to even very low levels of VOCs could put the health of those exposed at risk.

We use a vapor intrusion risk-screening procedure to identify the potential receptors and pathways for vapor intrusion associated with a petroleum release. If the initial survey detects the presence of a vapor cloud with concentrations of dangerous compounds exceeding specified action levels approaching a receptor, a combination of indoor air and/or sub-slab sampling may be required to determine whether a true, completed exposure pathway exists. If such a completed exposure pathway is established, corrective actions will be required.

Indoor Air and Leadership in Energy and Environmental Design (LEED)
To determine the levels of VOCs to which occupants and workers may be exposed at home and work, we collect air samples taken over a specific time interval. This is accomplished by using a flow controller and air canister with a pressure gauge. The flow controller is set to collect air continuously at a consistent rate, generally for 8 or 24 hours. For collection of samples for LEED certification, it is recommended that a certified industrial hygienist be consulted to determine that all sampling protocols for the necessary parameters are followed. Analysis by EPA Method TO-15 provides measurement of 63 VOCs reports as a total (TVOCs).

You can get more information by reading our Quick Sampling Guide or by contacting us with questions.

Collecting grab samples for TO-15
Collecting samples with flow controller for TO-15