Harrison said mine wash that will be remediated on the site, a former open pit iron ore mine, contains arsenic.

“It is real contamination, it is a real brownfield situation,” said Scott Alderfer, chairman of the Lower Macungie Environmental Advisory Council and a professional geologist.

He said the site may have green vegetation, “but if you dig down into the soil and don’t wash your hands, you could have some problems a couple years down the road.”