Collecting groundwater samples from a monitoring well on the Mayflower Mill Tailings Impoundment #4
EPA contractors collected the routine semi-annual groundwater and surface water samples at Mayflower Mill Tailings Impoundments, or Operable Unit 2 (OU2) in October 2024. Groundwater samples were collected from the Mayflower Mill area, Tailing Ponds (TP)1, TP2, TP3, TP4 (location of the Bonita Peak Repository), and surface water locations in the Animas River.
Sampling EPA’s extensive network of mon…
