Oil Drilling Spills Virtually No Oil

There was this interesting piece in the WSJ:

Since 1975, drilling in the Exclusive Economic Zone (within 200 miles of the U.S. coast) has had a 99.999% safety record, according to the Energy Information Administration, which reports that "only .001 percent of the oil produced has been spilled."

Thanks to technological advances, large spills are rare. Most spills are tiny, only a few feet in diameter. Large tanker spills, such as the Exxon Valdez in 1989, are so infrequent they account for a very small fraction of the oil that winds up in the sea.

A joint study by NASA and the Smithsonian Institution, examining several decades' worth of data, found that more oil seeps into the ocean naturally than from accidents involving tankers and offshore drilling. Natural seepage from underwater oil deposits leaks an average of 62 million gallons a year; offshore drilling, on the other hand, accounted for only 15 million gallons, the smallest source of oil leaking into the oceans.

The vast majority of the oil that finds its way into the sea comes from dry land, NASA found. Runoff from cities, roads, industrial sites and garages deposits 363 million gallons into the sea, making runoff by far the single largest source of oil pollution in the oceans. "Every year oily road runoff from a city of 5 million could contain as much oil as one large tanker spill," notes the Smithsonian exhibit, "Ocean Planet."

The second-largest source of ocean oil pollution was routine ship maintenance, accountable for 137 million gallons a year, NASA found -- more than 2.5 times the amount that comes from tanker spills and offshore drilling combined. But no one is proposing that we ban cargo and cruise ships. . . .