UPDATE 4-Exxon cleans up Arkansas oil spill; Keystone plan assailed
* Cleanup continuing, no estimate on repairs or restart
* Homes remain evacuated; 12,000 barrels of oil and water recovered
* Pipeline the primary carrier of Canadian crude to U.S. Gulf Coast
By Kristen Hays and Matthew Robinson
March 31 (Reuters) - Exxon Mobil on Sunday continued cleanup of a pipeline spill that spewed thousands of barrels of heavy Canadian crude in Arkansas as opponents of oil sands development latched on to the incident to attack plans to build the Keystone XL line.
Exxon spokesman Alan Jeffers said on Sunday that crews had yet to excavate the area around the pipeline breach, a needed step before the company can estimate how long repairs will take and when the line might restart.
"I can't speculate on when it will happen," Jeffers said. "Excavation is necessary as part of an investigation to determine the cause of the incident."
Exxon's Pegasus pipeline, which can carry more than 90,000 barrels per day (bpd) of crude from Patoka, Illinois to Nederland, Texas, was shut after the leak was discovered late Friday afternoon in a subdivision near the town of Mayflower. The leak forced the evacuation of 22 homes.
Exxon also had no specific estimate of how much crude oil had spilled, but the company said 12,000 barrels of oil and water had been recovered - up from 4,500 barrels on Saturday. The company did not say how much of the total was oil and how much was water. Continued...