Solidification/Stabilization Treatment at a Former Manufactured Gas Plant Site Cambridge Research Park, Cambridge, Massachusetts
Waste Treatment Home >
Brownfields > Cambridge Park
 |
| In situ treatment of MGP-impacted soil using shallow soil mixing. |
The property is the former location of a manufactured gas plant
(MGP). MGPs heated coal and oil to produce gas for lighting and
heating. Byproducts from this process include coal tars and other
organic compounds that behave as dense non-aqueous phase liquids
(DNAPLs) and light non-aqueous phase liquids (LNAPLs) when in groundwater.
Experts estimate that there are over 20,000 former MGP-impacted
sites in the U.S.
 |
| Redevelopment plans as a research park. |
Cement-based solidification/stabilization (S/S) is an effective
means to address contamination at former MGP sites. S/S treatment
of contaminated soil involves mixing portland cement into the soil.
Mixing can often be accomplished while the soil remains in place,
or in situ. At this particular site, cement was mixed into the soil
using a specialty auger system. As the auger penetrates the soil,
cement grout is pumped through the mixing shaft and exits through
jets located on the auger flighting, mixing cement into the contaminated
soil. An overlapping drilling (auger) pattern is used to ensure
complete mixing and treatment of the area. Cement-based S/S not
only successfully treated the soil for MGP contaminants, but also
improved the physical properties of the soil for property redevelopment.
More information:
Solidification/Stabilization
Treatment at a Former Manufactured Gas Plant Site (SR996)
CQA Methodologies
for In-Situ S/S at Former Manufactured Gas Plants (SR855)
Phoenix-Award
Winning Kendall Square Rises from Cement-Treated Brownfield Site
(SR854)
|