Gibraltar Rock quarry, NJ gets OK

Gibraltar Rock quarry, New Jersey, has received permission from the Montgomery Planning Board to continue operating with a new washing system.

For the past several years the quarry has been operating under a New Jersey Department of Environmental Protection Administrative Consent Order, which has levelled fines against the quarry owners when pollution runoff in streams has exceeded permitted standards. The last fine paid exceeded $62,000.

The quarry owners asked the New Jersey Department of Environmental Protection for relief from fines and a Force Majeure, which was granted in October 2013. The quarry was given 15 months to come up with a solution.

The proposed solution is a closed loop system that washes crushed stone and then carries the polluted water to a large process basin, where a chemical flocculent polyacrylamide would help coagulate and settle the remaining sediment and carry clean water back up the hill to be used again.

The coagulated sediment would be dredged up and then mixed with quarry stone for use as road covering.

The process water basin would be an 11-acre, 16-foot deep pond situated on a steep hill at the end of their property, overlooking Somerset County wetlands.

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