Richard Ashworth, and the leader of Kent County Council, Paul Carter, urged French president Nicolas Sarkozy to step in and resolve the dispute because of the resulting difficulties. This was the first time in the 20-year history of Operation Stack that the M20 was closed for more than three days; businesses in nearby towns reported trade down by up to 50%. According to Kent Police logs, one, two or three phases of Operation Stack were implemented for at least part of each day between 28 February and 15 March 2008. The Freight Transport Association estimated the cost of disruption to be between £4m-£5m at 9 March 2008. Kent County Council later announced progress with plans to construct a lorry park for temporary use to mitigate the effects of Operation Stack. This has met with opposition from the borough councilor for Saxon Shore ward where it would be sited; he accused the county council of "not thinking strategically", not considering the environmental impact properly, and of siting it too close to a National Grid facility, where he expects the fuel in vehicles to be a danger to a "facility of strategic national importance". 2015 On 24 June 2015 Operation Stack was implemented due to industrial action taken by French employees of the MyFerryLink company, as a result of disagreements regarding the imminent takeover of the company by DFDS. This has been the first ever incident which has seen the implementation of Phase 4 of Operation Stack, which involves closing the M20 from Junctions 9 to 11 coast-bound, meaning that continent-bound HGV traffic was stacked all the way from Junction 8 at Hollingbourne, southeast of Maidstone, to Junction 12 at Cheriton, near Folkestone. Operation Stack began to be removed from 3 July onwards, with more than 30 miles of parked HGVs needing to be cleared. The cost to the United Kingdom economy was estimated at around £250 million. Over 4,600 HGVs were eventually cleared from the M20 by 4 July, however soon afterwards Phase 2 was implemented again for Eurotunnel freight traffic, due to over 150 migrants storming the Calais tunnel portal. This was as a result of the ongoing migrant crisis in Calais. The incident demonstrated that insufficient organisation and security at Eurotunnel, and port facilities throughout Calais was present to keep the desperate migrants under foot. Operation Stack resumed later during the month. Damian Collins, MP for Folkestone and Hythe