The Mariner East 2 debate rages on

It remains the biggest economic story in Delaware County, if not the region.

And today there are about 2 billion reasons why some people - in particular chamber of commerce folks and labor unions - say Mariner East 2 is a jackpot for the region.

Mariner East 2 is the pipeline Sunoco Logistics wants to build, criss-crossing the entire width of Pennsylvania, including 11 miles in Delco. It will ferry Marcellus Shale products to the older Sunoco refinery in Marcus Hook.

A new report says the project could have a massive economic impact on the region, maybe a 2 to $3 billion boost.

Foes of the plan are not impressed.

The debate rages on.

It's on today's editorial page.