The state Department of Environmental Conservation announced Friday that it will soon begin this summer's excavations on the Royalton-Hartland Central School campus in Middleport.
It's the fourth phase of the removal of soil containing elevated levels of arsenic, blamed on the operations of the nearby FMC Corp. agricultural chemical plant.
This summer's plans call for removal of about 8,300 cubic yards of soil around the middle school; excavation and removal of the playground; and removal of the staging area and access road east of the middle school. About 18,000 cubic yards of soil are to be removed in later years.
The work won't be done when school reopens in September. The DEC said after classes resume, work will start after 8 a.m. and be curtailed during dismissal times.