Science Inventory

VOC SAMPLING IN THE WATER TABLE/CAPILLARY FRINGE AREA FOR ASSESSING IMPACT ON VAPOR INTRUSION AND INDOOR AIR QUALITY

Citation:

Paul*, C J. AND D C. DiGiulio*. VOC SAMPLING IN THE WATER TABLE/CAPILLARY FRINGE AREA FOR ASSESSING IMPACT ON VAPOR INTRUSION AND INDOOR AIR QUALITY. Presented at Air & Waste Management Assn. Symposium, RTP, NC, 07/21-23/2003.

Description:

Vapor intrusion has been determined to be a major pathway for increased indoor air contamination from volatile organic contaminants (VOCs) at certain contaminated sites. In order to properly assess vapor intrusion, it is important to adequately evaluate VOC concentrations in the ground water in the vicinity of impacted residences or buildings. The Draft EPA Subsurface Vapor Intrusion Guidance Document states that ground water samples should be obtained form the uppermost portions of the groundwater and/or capillary fringe. There are inherent problems obtaining representative samples from the water table/capillary fringe area for VOCs, particularly when collecting samples from monitoring wells. However, the use of good sampling practices can maximize sample representativeness and accuracy of data.

Record Details:

Record Type: DOCUMENT (PRESENTATION/ABSTRACT)
Product Published Date: 07/21/2003
Record Last Revised: 06/06/2005
Record ID: 75583

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL RISK MANAGEMENT RESEARCH LABORATORY

GROUND WATER AND ECOSYSTEMS RESTORATION DIVISION

SUBSURFACE REMEDIATION BRANCH