In 1998, activists in Austin, Texas, filed a lawsuit to protect their local aquifer from a proposed gasoline pipeline. By the time the project was built, the operator had been forced to add $60 million in safety features, including sensor cables that could detect leaks as small as 3 gallons a day. Some say the Longhorn pipeline is the safest pipeline in Texas, or perhaps the nation.
Now a much larger pipeline - the Keystone XL - is being proposed across the Ogallala/High Plains aquifer, one of the nation's most important sources of drinking and irrigation water. Yet none of the major features that protect Austin's much smaller aquifer are included in the plan. In fact, they haven't even been discussed.
The leak detection technology that will be used on the Keystone XL, for instance, is standard for the nation's crude oil pipelines and rarely detects leaks smaller than 1 percent of the pipeline's flow. The Keystone will have a capacity of 29 million gallons per day - so a spill would have to reach 294,000 gallons per day to trigger its leak detection technology.
The Keystone XL also won't get two other safeguards found on the 19-mile stretch of the pipeline over Austin's aquifer: a concrete cap that protects the Longhorn from construction-related punctures, and daily aerial or foot patrols to check for tiny spills that might seep to the surface.