SANTA FE (KRQE) – State officials are concerned that new spring temperatures are melting a snowpack that could stir up toxic contaminants left behind by the Gold King Mine spill.

According to the Santa Fe New Mexican, the state environment department issued a warning last week saying all of the melting snow could cause gallons of poison metals at the bottom of the Animas and San Juan River to move around.

The state is expected to monitor the water as part of an agreement made after EPA contractors spilled toxic waste water into the rivers last year.