impervious soil

impervious soil

A fine-grained soil, such as clay, having pores too small to permit water to pass except by slow capillary creep.
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65 million cubic meters of fine aggregate, 74,000 cubic meters of shell material, and 26,000 cubic meters of impervious soil.
I wonder how effective the EZ Drain is if the backfill is made with native, somewhat impervious soil.
Eight sites were selected for impervious soil samples, including four road sites, and two each from residential paved squares and alleys.
Other "green" initiatives include significantly limiting traditional roadways inside the community to reduce impervious soil issues, the inclusion of significant nature/cart paths, as well as the provision of a golf cart for each home, to encourage walking and the use of cleaner forms of energy, a substantial tree replenishment program, and landscaping plans that include an abundance of drought-tolerant plants to promote water conservation.