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Line 229: ADD FIGURE 8.7 IN THE SOIL ACCUMULATION SECTION BELOW!!!
→Soil Characterization Testing
It is most important to sample and test soil characteristics as a part of Construction and Assumption inspections, to confirm the BMP has been constructed with materials that meet design specifications and that installation of the soil component is acceptable. Testing to confirm that the material meets quality specifications (i.e., particle-size distribution, organic matter, pH, cationic exchange capacity, nutrients and soluble salts) needs to be completed prior to it being delivered to the construction site. Testing to confirm that installation of the soil component is acceptable (i.e., depth and compaction) should be performed after the installed material has been allowed to settle for at least two (2) weeks, and prior to planting.
It is most important to sample and test soil characteristics as a part of Construction and Assumption inspections, to confirm the BMP has been constructed with materials that meet design specifications and that installation of the soil component is acceptable. Testing to confirm that the material meets quality specifications (i.e., particle-size distribution, organic matter, pH, cationic exchange capacity, nutrients and soluble salts) needs to be completed prior to it being delivered to the construction site. Testing to confirm that installation of the soil component is acceptable (i.e., depth and compaction) should be performed after the installed material has been allowed to settle for at least two (2) weeks, and prior to planting.
Sampling and testing is also recommended as a part of Verification inspections, to determine if the BMP is being adequately maintained and if soil characteristics are still within acceptable ranges. It may also be done as part of Forensic inspection and Testing (FIT) work to help diagnose the cause of poor vegetation cover, drainage or treatment performance and decide on corrective actions.
Sampling and testing is also recommended as a part of Verification inspections, to determine if the BMP is being adequately maintained and if soil characteristics are still within acceptable ranges. It may also be done as part of Forensic inspection and Testing (FIT) work to help diagnose the cause of poor vegetation cover, drainage or treatment performance and decide on corrective actions.<br>
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[[File:Soil bulk density figure 8.7.PNG|thumb|325px|Maximum allowable bulk density values by soil texture class (Sustainable Sites Initiative, 2009)<ref>Sustainable Sites Initiative. 2009. The Sustainable Sites Initiative: Guidelines and Performance Benchmarks. American Society of Landscape Architects, Lady Bird Johnson Wildflower Center at The University of Texas at Austin, United States Botanic Garden and Sustainable Sites Initiative, Austin, TX. https://digital.library.unt.edu/ark:/67531/metadc31157/</ref>]]
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{| class="wikitable" style="width: 900px;"
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|Compaction
|Compaction
|Surface Resistance: ≤110 PSI; Sub-surface Resistance: Use soil texture class and Table 8.3 to determine maximum acceptable value; Bulk Density: Use PSD to interpolate maximum bulk density value from Figure 8.7.
|Surface Resistance: ≤110 PSI; Sub-surface Resistance: Use soil texture class and "Soil & Texture Class Table" (below) to determine maximum acceptable value; Bulk Density: Use PSD to interpolate maximum bulk density value from bulk density figure beside this table.
|Cone Penetration Tests or Bulk Density Tests
|Cone Penetration Tests or Bulk Density Tests
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|Compaction
|Compaction
|Surface Resistance: ≤110 PSI; Sub-surface Resistance: Use soil texture class and Table 8.3 to determine maximum acceptable value; Bulk Density: Use PSD to interpolate maximum bulk density value from Figure 8.7.
|Surface Resistance: ≤110 PSI; Sub-surface Resistance: Use soil texture class and "Soil & Texture Class Table" (below) to determine maximum acceptable value; Bulk Density: Use PSD to interpolate maximum bulk density value from bulk density figure beside this table.
|Cone Penetration Tests or Bulk Density Tests
|Cone Penetration Tests or Bulk Density Tests
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{| style="width: 900px;"
{| style="width: 900px;"
|<sup>v</sup> <small> Based on the threshold for non-saline soils (Whitney, 2012). </small>
|<sup>v</sup> <small> Based on the threshold for non-saline soils (Whitney, 2012). </small>
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|<sup>vi</sup> <small>Interpolated value from Figure 8.7 based on a sandy loam soil containing at least 70% sand-sized particles. </small>
|<sup>vi</sup> <small>Interpolated value from bulk density figure beside this table. based on a sandy loam soil containing at least 70% sand-sized particles. </small>
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|<sup>vii</sup> <small>Based on German green roof standards (FLL 2008). 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 2008). 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>iv</sup> <small> kPa = kilopascals </small>
|<sup>iv</sup> <small> kPa = kilopascals </small>
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==Sediment Accumulation Testing==
==Sediment Accumulation Testing==