Soil & Groundwater Newsletter
December 30, 2010

This Week�s Featured News Stories
Taiwan Leads Asia in Contaminated Site Remediation
TAIPEI, Taiwan--(BUSINESS WIRE)-- Being the first Asian country to implement the Soil and Groundwater Remediation Act, Taiwan has held the leading position in Asia with many investigations and remediation techniques accumulated since the act was promulgated in February 2000, said Hong-de Tsai, executive secretary of Soil and Groundwater Remediation Fund Management Board under the Environmental Protection Administration (EPA).  Tsai noted in an interview that because Taiwan is small and densely populated, it must have active planning of land use and effectively repair, restore and reuse contaminated ...
USACE integrates fracturing and iron/carbon injections at Colorado site
The U.S. Army Corps of Engineers (USACE) performed a large-scale pilot test in 2009 for remediating TCE-contaminated groundwater at the "Atlas 12" formerly used defense site. Hydraulic fracturing was conducted to optimize emplacement of a zero-valent micro-iron/complex carbon amendment that chemically and biologically reduces contaminants in bedrock. Three-dimensional (3-D) mapping was used to monitor the amendment`s subsurface pathways and evaluate its in situ performance. Nine months after fracturing and injections, changes in volume and concentration-weighted averages estimated an 82% TCE mass ...
Directed Technologies Drilling Incorporated (DTD)

Directed Technologies Drilling (DTD) is the nation's leading contractor for installing horizontal environmental remediation systems. Our focus is on installation of horizontal wells and directional wells for contaminated site cleanup, water resources development, construction dewatering, and related environmental applications. DTD operates across the United States with a fleet of drill rigs capable of small and large projects. We specialize in injection wells, remediation wells, bioremediation wells, air sparge and vapor extraction wells, and groundwater extraction wells. DTD has strong roots in the environmental and geotechnical consulting fields, with all senior managers being experienced, professional geologists or environmental scientists.

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