ROSWELL, N.M. (AP) — The DeGroot Dairy near Roswell has submitted to state officials a plan for investigating the extent of soil and groundwater pollution at a site where contamination has been confirmed.

The state Environment Department required the dairy to submit the plan to address pollution associated with its operation.

Wastewater from the dairy is discharged to two evaporative lagoons and then applied to crop land.

The state says groundwater in the shallow aquifer is monitored regularly through wells at the site and is contaminated with nitrate, chloride and total dissolved solids at levels exceeding state groundwater quality standards.

The dairy plans to install 11 soil boring and two monitoring wells. Once the investigation is complete, the dairy must submit a plan for cleaning up any contamination.

Copyright 2010 The Associated Press.