Dangerous dry-cleaning chemicals leached into the soil and the aquifer decades ago. The pulled out recently after working on cleanup for 10 years, but some of the contamination remains. Now, the state鈥檚 taking over, and ignoring investigators鈥� recommendation to use a different cleanup method.
The EPA was using bioremediation鈥攖hat鈥檚 injecting vegetable oil into the ground to attract micro-organisms that break down the harmful chemicals. Reviewers looked at results mid-cleanup and said the vegetable oil method was not working in the deep parts of the plume. Their report says instead, the EPA should pump the groundwater out, clean it, and put it back.
Angelo Ortelli, project manager for the site, said he disagrees. "Well, we鈥檝e seen success using the bioremediation that鈥檚 been applied to this deep zone," he said. "Over the 10-year period, we鈥檝e seen a 50 percent decrease in the concentration in three of the four monitoring wells that monitor that progress."
Ortelli said pumping the water out isn鈥檛 viable in this area. The state plans to move forward next year with a new kind of vegetable oil he said should work better.
Dry-cleaning chemicals can cause cancers and birth defects. The vaporize and come up out of the soil and into buildings. That鈥檚 happening in Espa帽ola, including at , a spot for children and families. NMED said the chemical concentrations in the vapors found in Las Cumbres do not exceed EPA safety standards. Ortelli said they鈥檙e keeping an eye on it.
