One of the most powerful investigation techniques made possible with
MicroWells is achieved by combining the immediate sampling
capability of the wells with on-site gas chromatography. This allows
the results from one well to help guide the installation of
additional wells. Alternatively, by sampling a well at sequential
depths and obtaining a profile of ground water conditions, permanent
monitoring screens can be set at optimum depths. P&S's mobile
lab is equipped with lab-grade Hewlett Packard unit with computerized data management for a full range of
analytic capabilities. Experience indicates that cost savings are
maximized when well installations are combined with on-site
analysis.
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Field data can be combined for
analysis and visualization of project components such as water
table contours, contaminant concentrations, plume delineation and
more.
Field Analysis Programs Include:
• Hydrocarbons, BTEX, chlorinated solvents, EDB and other halogenated compounds
• Gasoline and diesel range organics
• Pesticides and PCBs
• Collected data can be used in GIS
mapping of site conditions
Advantages:
• Detection limits below MCLs for most analytes
• Immediate reliable results
• Over 17 years of field analysis expertise
• Cost savings
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Hendrick Street
As part of a Massachusetts DEP contract, P&S installed over 200
MicroWells and analyzed more than several thousand samples in its
mobile lab to track a plume of TCE from a municipal well field to
the source area nearly five miles away. One 1.3" well was
installed and sequentially sampled to a record depth of 202 feet
BGS. In cooperation with DEP, P&S conducted the field program
using real time analyses to establish the most time efficient and
cost effective strategy of well placement to accomplish this
extraordinary task.
