I have a retention basin that I would like to construct in a C/D type soil. The depth to water table is shown to be at a range of 12 to 30 inches below grade. The soils info a have also says that the Capacity of the most limiting layer to transmit water is Moderately low to Moderately high (0.06 to 0.20 in/hr). This info is from Web Soil Survey.
I'm being told that in order to put the basin in this type of soil that it needs to have a compacted clay liner with clay that is brought in from offsite. Does this sound correct?
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