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The Brown Group
Denver, CO
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The investigation and successful mitigation of one of the largest vapor
intrusion plumes in the country, where a groundwater plume containing
industrial solvents extends more than one mile offsite. Indoor air
tests were conducted in over 700 homes and vapor mitigation systems
installed in over 370, quickly achieving regulatory approval and
controlling potential health risks to residents of the surrounding
neighborhood. In addition, groundwater containment and remediation is
preventing further offsite migration of the pollution. Continuing
environmental work on this project includes groundwater bioremediation,
indoor air monitoring, and designing source pollution remedies. The
pioneering environmental engineering work on the Redfield Site has
garnered national attention and contributed to the client's successful
defense in a multi-million dollar class-action lawsuit in 2004.
An integrated GIS-database data management
and data access application was developed by Tom Liebert to quickly
query years of analytical water and air data along with property
information and post it to thematic maps on a laptop computer.
Risk-based data summaries are displayed with physical parameters such
as historical groundwater elevation. Comprehensive analytical data may
be displayed for individual wells and residences by clicking on the
map. An intuitive interface was designed to be used by expert witnesses
and attorneys in the courtroom.
As the project matured and the lawsuit
concluded, the GIS system was expanded to provide data access,
security, and quality assurance to technical staff, automating monthly
map production and statistical analysis.
Mr. Liebert is the sole developer of the
system, which is comprised of code written in Visual Basic 6, VBA
(ADO), and Avenue and includes automated SQL generation and an ODBC
connection between ArcView and numerous Access databases.
(Click on the images below to view examples)
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