EPA approves plan to remove San Jacinto Waste pits from river

The Environmental Protection Agency on Wednesday approved a plan to permanently remove tons of toxics from the San Jacinto Waste Pits - a Superfund site that was heavily flooded and began to leak cancer-causing dioxin into the river after Hurricane Harvey.

The plan, which comes after years of litigation and citizen activism that built public support for permanently removing the pits from the San Jacinto River, includes installing cofferdams to prevent release of the pollutants before excavating and removing an estimated 212,000 cubic yards of dioxin-contaminated material.

The decision comes only two weeks after the EPA confirmed that a concrete cap used to cover the pits since 2011 had sprung a leak during Harvey's floods. An EPA dive team found dioxin in sediment near the pit in a concentration of more than 70,000 nanograms of dioxin per kilogram of soil - more than 2,300 times the EPA standard for clean-up.

The extent of damage caused by that release remains unknown. But flooding of the Superfund site prompted the EPA's Scott Pruitt to visit the area and move up a decision on the proposed clean-up plan that had been pending for about a year. The estimated cost is $115 million, the EPA announced. 

Click here to read the Houston Chronicle's account.