Information on the 2010 Gulf of Mexico oil spill is provided below.

Eleven men were killed in the 20 April 2010 blowout on the Deepwater Horizon. By the time BP regained control of its well 87 days later, the Gulf was fouled by some 4.9 million barrels of crude oil, destroying shrimp and oyster harvests and the tourist season.

It was America's worst oil spill and the civil trial of BP and the other companies involved on the Deepwater Horizon had been expected to be one of the biggest and most complex legal proceedings in modern history.

Hundreds of lawyers for all parties were involved in preparing for the trial - and in parallel negotiations to try to get a settlement. There were 340 lawyers from 90 different firms working on the plaintiffs' side alone.

The deal between BP and more than 120 000 victims of the spill - from shrimp boat captains to sales teams at time-share condos, restaurateurs and wedding planners - settles what is arguably the most complicated part of the legal proceedings.

But it will not be universally welcomed in the Gulf, where there is a strong undercurrent of opinion that wants to see BP held to account in court in addition to offering financial compensation.*

Required

Identify the four social, environmental and economic indicators (12 in total) that BP might consider in estimating and negotiating its compensation bill for this oil spill.