Residents have until 8 a.m. Monday, March 7, to comment on plans for remediation of contaminated groundwater in Esko, adjacent to the Esko Post Office. A notice regarding the comment period appeared on page 5 of the Feb. 4 Pine Knot News.

The Minnesota Pollution Control Agency began site investigation in 1994, when the post office well was sampled as part of a petroleum release investigation and benzene was detected in the well. Remedial activities lowered the benzene levels so the MPCA closed that case in 2008.

In 1996, tetrachloroethene (PCE) was identified in the post office well and ha...