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→Soil Characterization Testing
|<sup>vii</sup> <small>Based on German green roof standards (FLL, 2018)<ref>Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau (FLL). 2008. Guidelines for the Planning, Construction and Maintenance of Green Roofs. The Landscaping and Landscape Development Research Society E.V., Bonn, Germany. https://shop.fll.de/de/downloadable/download/sample/sample_id/44/</ref>. Specifications will vary depending on the green roof growing media product. Product specifications should be provided by the media supplier. Test results should be compared to the media supplier’s specifications and permissible tolerance ranges. </small>
|<sup>vii</sup> <small>Based on German green roof standards (FLL, 2018)<ref>Forschungsgesellschaft Landschaftsentwicklung Landschaftsbau (FLL). 2008. Guidelines for the Planning, Construction and Maintenance of Green Roofs. The Landscaping and Landscape Development Research Society E.V., Bonn, Germany. https://shop.fll.de/de/downloadable/download/sample/sample_id/44/</ref>. Specifications will vary depending on the green roof growing media product. Product specifications should be provided by the media supplier. Test results should be compared to the media supplier’s specifications and permissible tolerance ranges. </small>
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|<sup>viii</sup> <small>Based on Penn State University Center for Green Roof Research (Berghage et al. 2008)<ref>Berghage, R., Wolf. A., Miller, C. 2008. Testing Green Roof Media for Nutrient Content. Presented at
|<sup>viii</sup> <small>Based on Penn State University Center for Green Roof Research (Berghage et al. 2008)<ref name="example5">Berghage, R., Wolf. A., Miller, C. 2008. Testing Green Roof Media for Nutrient Content. Presented at
Greening Rooftops for Sustainable Communities, held in Baltimore, MD from April 30 to May 2, 2008</ref>. </small>
Greening Rooftops for Sustainable Communities, held in Baltimore, MD from April 30 to May 2, 2008. http://admin.ipps.org/uploads/58_086.pdf</ref>. </small>
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|<sup>ix</sup> <small>Based on Penn State University Center for Green Roof Research (Berghage et al. 2008) for the minimum to sustain plant growth and Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA, 2014) for the maximum to avoid unnecessary fertilization that would have low or no effect on plant health. </small>
|<sup>ix</sup> <small>Based on Penn State University Center for Green Roof Research (Berghage et al. 2008) for the minimum to sustain plant growth and Ontario Ministry of Agriculture, Food and Rural Affairs (OMAFRA, 2014) for the maximum to avoid unnecessary fertilization that would have low or no effect on plant health. </small>