On tuesday, may 19, a rusted pipeline broke, smothering Santa Barbara’s beaches and tides with a dense blanket of warm oil. The onshore pipe, operated by Houston-based Plains All American Pipeline, leaked more than 100,000 gallons of oil; 21,000 of those gallons poured into a drainage ditch, under a freeway, and into the Pacific. It was the worst local spill since 1969, when a Santa Barbara Channel drilling rig blowout sent a catastrophic 4.2 million gallons of crude onto area beaches and helped give rise to the modern environmental movement. And it occurred along one of the most ecologically pristine and fiercely protected places on earth. Swarming with seabirds, dolphins, sea lions, kelp forests, and migrating whales, the crystal clear, reef-filled waters of the undeveloped Gaviota Coast are one of…