Bramer David, FLL Sample Test. 2010

DPD Green Building. City of Seattle Department of Design and Development. 2009.
http://www.seattle.gov/dpd/GreenBuilding/Resources/TechnicalBriefs/
DPDS_009485.asp#design

King County Greenroof Case Study Report. Paladino and Company, Inc. 2006
http://www.seattle.gov/dpd/cms/groups/pan/@pan/@sustainableblding/
documents/web_informational/dpdp_020117.pdf

Matt Burlin, Amy Chomowicz, Casey Cunningham, Dave Elkin, Tom Liptan, Alice Meyers, Linc Mann, and Leslie Winter-Gorsline.  Ecoroof Handbook. Environmental Services City of Portland, Oregon. 2009. Print.
http://www.portlandonline.com/bes/index.cfm?c=50818&a=259381

Snodgrass, Edmund C., The green roof manual : a professional guide to design, installation, and maintenance. Timber press, 2010. Print.

Crystal Light Soil
http://www.crystallightsoil.com/apps/photos/photo?photoid=110514829

HydroTech
http://www.hydrotechusa.com/product_data/litetop%20soil_pds.pdf

Chuck Nichols, General Manager. Speciality Soils, Inc.
http://www.specialitysoil.com/