In 2011, the upgrade of the treatment system at Mayfield Farm was completed on time in February despite the hard winter. The contract value was 2.6M by far the largest project the company had undertaken. BAA Commissioned ARM to prepare and ramp up the system for the 2011 and 2012 winter.
Construction of the 5.5 hectare STRB at Hanningfield started in August. ARM were commissioned to supervise the construction and running in of the system.