The Lagan fraud was made public last July and the criminal investigation is ongoing.
The Lagan Valley risk assesment report highlighted "considerable" dangers, including difficulties in recruiting surgical staff.
Lagan Valley MP Jeffrey Donaldson has criticised the minister and said it was a "dark day".
BBC: John Lewis: NI Executive must decide says Peter Robinson
It is thought he later walked across the bridge at the Lagan Weir and fell in.
It was contained in a packaged addressed to the company's chief executive, Kevin Lagan in Belfast.
The Lagan Group is owned by Kevin Lagan, one of Northern Ireland's wealthiest businessmen.
The Lagan Cement Group supplies similar products from a large cement plant at Kinnegad in County Meath.
The money was paid out to people posing as Lagan Construction, the contractor working on Guernsey's airport project.
To the south, it borders the Lagan Valley constituency and to the east, runs almost to Belfast Lough.
Lagan Valley assembly member Basil McCrea has received a formal warning from the Ulster Unionist Party's disciplinary panel.
Speaking on BBC NI's The View, the Lagan Valley MLA said the sooner the site was re-developed, the better.
The Public Services Department said it was working with the newly announced preferred contractor, Lagan Construction, on minimising disruption.
Speaking on the BBC's The View, the Lagan Valley MLA said the sooner the site is re-developed, the better.
Edwin Poots of the DUP and the UUP's Basil McCrea were elected in Lagan Valley on the first count.
It follows the death of 20-year-old Joby Murphy whose body was recovered from the River Lagan at the weekend.
The Quinn Group cement and quarrying business is in talks to merge with part of the Belfast-based Lagan group.
Mr Lagan said it was an attempt to intimidate himself and the company.
Lagan Valley Hospital was without water for "a number of hours" on Thursday.
"Surely this needs to be considered alongside the decision to withdraw the emergency services from Lagan Valley, " Mr Donaldson said.
The South Eastern Trust plans to move its acute inpatient wards at both hospitals to Lagan Valley Hospital in Lisburn.
Lagan Valley MP Jeffrey Donaldson, who is fiercely opposed to the Agreement, said the focus should be on issues not personalities.
Noel and Nevin were pronounced dead at the scene, while Graham was taken to Lagan Valley Hospital where he later died.
BBC: Spence family slurry deaths: Inquest hears tragic details
Lagan Construction said it was cooperating fully with investigations and had taken steps to ensure similar incidents would not happen again.
However, the Lagan Valley MP would not be drawn on reports that he is to challenge David Trimble's leadership of the party.
The DUP's Jonathan Craig asked about poor broadband coverage in rural areas with particular emphasis on Hillsborough in his Lagan Valley constituency.
However, staff at Lagan College said A-level module exams will continue if students can make their way safely to and from the school.
Lagan Construction said the spillage was "regrettable" and it was now trying to find out how to stop the same thing happening again.
The decision to strip acute services from Lagan Valley Hospital was made following a risk assessment received by the Down Lisburn Trust last autumn.
The Lagan Valley MP said the electorate was very "concerned and frustrated" with current direction of the peace process and on-going concessions to republicans.
Quinn Building Products and the Lagan Cement Group have signed a memorandum of understanding that may lead to a joint venture between the two.
应用推荐