Soil Excavation and Aeration with an AirSpade 

Instructional video on airspading to relieve soil compaction and extend the life of historic trees in national park cultural landscapes.
Please consult the following resources for more information on air-spading applications and how to procure professional arborist services through GSA Advantage.
- AirSpade Technical Applications Bulletin (AirSpade website)
www.airspade.com/blogs/educat...
- GSA Advantage! (Federal Procurement website)
www.gsaadvantage.gov/advantag...
- Soil Compaction in the Urban Landscape (University of Florida IFAS Extension website)
edis.ifas.ufl.edu/publication...
- Soil Food Web (USDA Natural Resources Conservation Service website)
www.nrcs.usda.gov/wps/portal/...