Four Corners Power Plant has 42 groundwater monitoring wells, 42 of which have been polluted above federal advisory levels based on samples collected between November 04, 2015 and December 03, 2019. Groundwater at this site contains unsafe levels of sulfate, lithium, boron, cobalt, selenium, fluoride, molybdenum, radium, arsenic, lead, thallium, beryllium, cadmium and chromium.Site description
Arizona Public Service Company’s Four Corners Generating Station is in San Juan County, NM, on the banks of the man-made Morgan Lake. Plant Four Corners began operations in 1963 and now operates two of five coal-fired units that combine to produce 1636-MW. After several years of lawsuits concerning both air and groundwater pollution, Plant Four Corners retired the oldest three of the coal-fired units in 2013. The Four Corners Generating Station is planning to fully retire all coal-fired units by 2031. Four Corners Generating Station operates their Multiunit 1 landfill, URS pond and CWT Pond, which are all regulated under the CCR-rule. Four Corners Generating Station is among the U.S. Environmental Protection Agency's list of potential damage cases, indicating that coal ash disposal at the site has potentially polluted groundwater or surface water at levels which threaten human health and the environment.