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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