...They all appear to be getting their numbers from the same source: TransCanada Corporation, the company behind the project.
Alex Pourbaix, an executive at TransCanada, told a House subcommittee earlier this month that the project would create 13,000 construction jobs.
"On top of that there are 7,000 manufacturing jobs associated with this project," said Pourbaix. "Twenty thousand jobs in all."
What he fails to mention is that the jobs numbers are based on "person years," meaning the number of people employed could be much lower.
"That may be in some cases one person working six months and another person working six months," says Ray Perryman, president of an economic research firm based in Texas. "Or it could be if one person works two years, that's two job years."
Perryman was hired by TransCanada to look at the broader economic impact of the project. And if you're wondering where Huntsman and Hutchison got the 100,000 jobs-created figure, look no further than Perryman. He adds up all the jobs at all the contractors and manufacturers and suppliers and restaurants and hotels along the way.
"That money gets spent and circulated through the economy so ... the 118,000 jobs is the cumulative total of all that during the construction phase," says Perryman.
And that's also measured in person years.