In reality, practically all aquifers may receive some recharge of water since absolutely impermeable underground layers might not exist.

These included questions over standard dosage rates, the acceptability of virtually impermeable film, and the timing of changes in the standard presumptions used by MBTOC, which might affect domestic regulatory processes.

And more importantly, that line between good and evil which privileged people like to think is fixed and impermeable, with them on the good side, and the others on the bad side I knew that line was movable, and it was permeable.

One view is that our identities are immutable, impermeable, exogenously generated, and intrinsically opposed to one another. This classic us versus them dichotomy leads to sympathy for one s in group and implacable conflict with out groups a bottomless source of conflict throughout history.