An innovative discrete multilevel sampler design

Conference · Wed Nov 01 04:00:00 EST 1995

OSTI ID:116332

Marvin, B K; De Clercq, P J; Taylor, B B; Mauro, D M ^[1]

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1. META Environmental Inc., Watertown, MA (United States)

An innovative, small-diameter PVC discrete multilevel sampler (DMLS) was designed for the Electric Power Research Institute (EPRI) to provide low-cost, discrete groundwater samples from shallow aquifers. When combined with appropriately-sized direct push soil sampling technologies, high resolution aquifer characterization can be achieved during initial site assessment or remediation monitoring activities. The sampler is constructed from 1-inch diameter PVC well materials, containing polyethylene tubing threaded through PVC disks. Self-expanding annular and internal bentonite seals were developed which isolate discrete sampling zones. The DMLS design allows customization of sampling and isolation zone lengths to suit site-specific goals. Installation of the DMLS is achieved using a temporary, expendable-tipped casting driven by direct push methods. This technique minimizes mobilization costs, site and soil column disturbances, and allows rapid installation in areas of limited overhead clearance. Successful pilot installations of the DMLS prototype have been made at a former manufactured gas plant (MGP) site and a diesel fuel spill site. Analysis of groundwater samples from these sites, using relative compound distributions and contaminant concentration profiling, confirmed that representative discrete samples were collected. This design provides both economical and versatile groundwater monitoring during all phases of site assessment and remediation.

• OSTI ID: 116332
• Report Number(s): CONF-9507173--; ISBN 0-7844-0095-4
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
02 PETROLEUM
DATA
DESIGN
DIESEL FUELS
FIELD TESTS
GROUND WATER
OIL SPILLS
SAMPLERS
SAMPLING
TOWN GAS
WATER POLLUTION