Alex Coca, a scientist with the New Mexico Environment Department, checks over paperwork before placing a jug of water on a table for testing at San Juan County's Lee Acres Sheriff's substation in Farmington, N.M., Monday, Aug. 10, 2015. A crew supervised by the U.S. Environmental Protection Agency has been blamed for causing a wastewater spill at an abandoned mine in Colorado that sent water laced with heavy metals, including lead and arsenic, downstream to the New Mexico municipalities of Aztec, Farmington and Kirtland over the weekend.