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She began working with DEP's project manager for the Spelter site, David Hight, to get answers. "If it had not been for him," she says, "I'd probably still be getting the runaround." Hight began to consider and rule out things like fertilizer that could turn the ground green. He arranged a site walk, took samples and eventually confirmed Morlock's suspicion that pollutants were leaking out. Investigators eventually determined that an unmapped gravel drain had been left in place below the area being capped, Hight says. Neither he nor Potesta & Associates spotted the drain because it was low on the riverbank outside the cap area, and vegetation made it difficult to see. DuPont referred questions to Potesta, who said the seep was sealed with clay in March. His crew has since done a thorough review to ensure there are no other drains, and Potesta says his employees will now include the river bank in their monthly walkthroughs. Certain metals at the DuPont site, including arsenic, cadmium and lead, can in high concentrations cause serious health problems ranging from developmental disabilities and cancers to low fertility. The site is fenced and inaccessible to the public, making runoff the only potential threat. Samples taken directly from the seep showed high levels of dissolved zinc, copper, iron, lead, aluminum and manganese, and smaller amounts of other metals, the DEP says. They may have come not only from the smelter, but also old coal mines at the site. But samples taken from a West Fork monitoring station six times a year since 2001 show few metals were making it into the river. DEP charts show steadily falling levels of manganese, with spikes in zinc, aluminum and iron during the demolition and cap-construction periods in 2002 and 2003. Overall, the trends are downward, and because neither Spelter nor any downstream community relies on the West Fork for drinking water, DEP officials say there should be no impact on people. Morlock will keep watching just in case. "I'll stay on top of it because people's lives could possibly be at stake."
[Associated
Press;
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