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4 COLLECTION TOOLS

4.7 GAS/AIR COLLECTION METHODS

4.7.3 Air Sampling Devices


Use: Collection of VOCs from ambient air.

Description:

A control device is used to maintain a constant flow of air into: (1) a canister, or (2) a filter over the desired sample period. More advanced equipment may utilize a sensor to identify when wind direction is coming from the suspected area of contamination.

Analytes:

1. Non-Halogenated VOCs 3. Halogenated VOCs

Media:

Soil: Ground Water: Surface Water: Gas/Air:
Not Applicable Not Applicable Not Applicable MINIMUM
Maximum Depth: Not Applicable.
Production Rate: Sample is available after a short amount of time.
Investigation Derived Waste Volume: Small volume of waste.
Technology Status: Commercially available and routinely used field technology.
Certification/Verification: Technology has not participated in CalEPA certification and/or CSCT verification program.
Relative Cost per Sample: Not Applicable.

Limitations:

ASTM Standards:

D 1356 - 95a Terminology Relating to Atmospheric Sampling and Analysis.
D 1357 - 95 Practice for Planning the Sampling of the Ambient Atmosphere.
D 1704M - 95 Test Method for Determining the Amount of Particulate Matter in the Atmosphere by Measurement of the Absorbance of a Filter Sample.
D 3686 - 95 Practice for Sampling Atmospheres to Collect Organic Compound Vapors (Activated Charcoal Tube Absorption Method).
D 5466 - 93 Test Methods for Determination of Volatile Organic Compounds in Atmospheres (Canister Sampling Methodology).
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