The seam on this dam tunnel was actively leaking water.  SealGuard II, a dual component polyurethane grout, was injected into the leak path to seal the water flow.  With just a drill, a dual component caulking gun, and some SealGuard II, a water leak of up to 50 gallons per minute can be stopped.  SealGuard II is manufactured by SealGuard, Inc. and the grouting was performed by Sub-Technical, Inc.

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