Prime contractor agreed to process subcontractor’s extra work claim, but failed to file a timely claim. The Department of Sanitation in 200 awarded a contract to Arnell Construction Corp. to build two new sanitation garages for Districts 1 and 4 located at 161 Varick Street in Brooklyn. Arnell then signed a $3 million subcontract with Rad & D’Aprile, Inc. to perform masonry work on the project.