filter sock compost
Drain filter sock filled with compost
http://www.ars.usda.gov/is/pr/2010/100723.htm
vegetated compost sock
http://cfpub.epa.gov/npdes/stormwater/menuofbmps/index.cfm?action=factsheet_results&view=specific&bmp=120
http://www.filtrexx.com/green_roof.htm
http://www.mcgillcompost.com/compost-use
garden soxx anywhere
http://www.filtrexx.com/gardensoxx.htm
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