An Argentinean judge has halted shipment of the reactor core from Southern California Edison?s decommissioned Unit 1 at the San Onofre Nuclear Generating Station in northern San Diego County to its final resting place, according to utility spokesperson Ray Golden. In a decision the company learned of through media accounts, Golden said the judge banned passage of the core within 200 miles of the country on the unit's planned journey from a beach along Camp Pendleton to Barnwell, South Carolina. As Edison works to resolve the issue, its window for shipping the core is set to expire at the end of March under a California Coastal Commission directive designed to protect the annual mating season of two endangered birds?the Western snowy plover and least tern?which begins in April. Further dimming the prospects for the voyage are the onset of the fall and winter in the Southern Hemisphere that will bring storms on the planned route around Cape Horn, Golden noted. Next, hurricane season in the Atlantic and Caribbean beginning June 1 may threaten the shipment. ?We can certainly continue to store on site for extended periods of time, if that becomes necessary,? concluded Golden.