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-—•'f' ‘ vwivuiv^vil. * > V don't deal with chrome six," he said, noting that chrome three is an element found in the human body. Worrell added that chrome three is insoluble and inert and won't leach through soil. Asked by Luke how sludge from the tanning process would be disposed, the biochemist said “We’re going to do whatever the authorities say we have to do with it,” noting that studies show it can be safely dumped in landfills. He told the supervisor that the tannery will produce approximately 50 pounds of chromium per month, well below the 2,200 pound mark for which a hazardous waste storage permit is requiredJackson
explained that the federal Environmental Protection Agency sets regulations at harmful quantity levels and does not consider that less than 2,200 pounds of trivalent chromium poses any danger.
No Danger From Acid
Worrell acknowledged that acids are also used in the tanning process but maintained they are neither hazardous nor dangerous. He said acids are required in very small quantities for tanning will be neutralized before released into the Thornton.
Luke interjected that local government had been under the impression that the Thornton River was, “perfectly safe" until notified by the health department and SWCB several years ago that dumping “raw sewage” into the river had to cease. "Following your theory, the sewage should be so diluted that it wouldn't affect the river,” Luke said, asking Worrell if he had a statement attesting that the acids used in the tanning process posed no danger to Clifford Miller's
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