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Line 307:
→Surface Infiltration Rate Testing
soil surface or in permeable pavement joints or pore spaces, and over-compaction of the soil, that can occur during construction or routine operation. Therefore it is important to test the surface infiltration rate of LID BMPs as part of Assumption and Verification inspections. As part of Assumption inspections it helps determine if the BMP is ready to
soil surface or in permeable pavement joints or pore spaces, and over-compaction of the soil, that can occur during construction or routine operation. Therefore it is important to test the surface infiltration rate of LID BMPs as part of Assumption and Verification inspections. As part of Assumption inspections it helps determine if the BMP is ready to
be assumed by the property owner. As part of Verification inspections it provides an indication of whether or not the surface drainage performance of the BMP is still within an acceptable range, if it is being adequately maintained, and to diagnose the cause of any problems with drainage or [[vegetation]] detected through visual inspection or other types of testing. Tests may also be done as part of '''Forensic Inspection and Testing (FIT)''' work to diagnose the cause of problems with drainage or vegetation, with the number and locations of test determined by the nature of the problem being investigated.
be assumed by the property owner. As part of Verification inspections it provides an indication of whether or not the surface drainage performance of the BMP is still within an acceptable range, if it is being adequately maintained, and to diagnose the cause of any problems with drainage or [[vegetation]] detected through visual inspection or other types of testing. Tests may also be done as part of '''Forensic Inspection and Testing (FIT)''' work to diagnose the cause of problems with drainage or vegetation, with the number and locations of test determined by the nature of the problem being investigated.
Surface infiltration rate testing involves estimating the saturated hydraulic conductivity (K<sub>S</sub>) of the BMP surface through measurement at several locations and calculation of an average value. A single measurement can take anywhere from 15 minutes to several hours (Erickson et al., 2013<ref>Erickson, A.J., Weiss, P.T., Gulliver, J.S. 2013. Optimizing Stormwater Treatment Practices: A Handbook of Assessment and Maintenance. New York: Springer. https://link.springer.com/book/10.1007/978-1-4614-4624-8</ref>) depending on soil or surface characteristics.
==Natural or Simulated Storm Event Testing==
==Natural or Simulated Storm Event Testing==