Limestone quarry mined into a fault zone that was leaking about 1400 gpm of ground water.

To stop the unwanted inflow, the polyurethane grout SealGuard II was injected into the fault. SealGuard II is a dual component polyurethane grout that reacts in about 3 seconds to produce a rigid foam (900 PSI compression strength).  SealGuard II is manufactured by SealGuard, Inc.  The grouting, which was completed in about 4 hours, was performed by Sub-Technical, Inc.