Monticello Steam Electric Station has 7 groundwater monitoring wells, 7 of which have been polluted above federal advisory levels based on samples collected between October 15, 2015 and September 20, 2017. Groundwater at this site contains unsafe levels of boron, sulfate, cobalt, beryllium, arsenic, lithium, cadmium, selenium, molybdenum, chromium and lead.Site description
The Monticello Steam Electric Station in Mount Pleasant, Texas was owned and operated by Luminant until its retirement in January 2018. Monticello had three power generation units, with the first being commissioned in 1974. Monticello has three ash ponds regulated under the federal coal ash rule: West Ash Settling Pond, Southwest Ash Settling Pond, and Northeast Ash Water Retention Pond.