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BACKGROUND - The objective of geotechnical testing is to help determine the suitability of a site for green stormwater infrastructure. The tests are used to calculate infiltration rates at proposed green infrastructure locations and evaluate the lithology at depths sufficient to identify any hydraulically limiting layers that would inhibit vertical infiltration and potentially cause lateral flow. The testing includes drilling borings followed by infiltration testing within the footprint of each GSI system.
USING THE LAYER - The infiltration rates and subsurface lithology results such as depth to bedrock and depth to groundwater may be helpful for other users of this layer, but it is important to note that these values can vary widely from location to location, even for nearby sites.
|November 28, 2022
|Other (City of Philadelphia)