In U.S. v. San Diego Gas & Electric Company, on August 31, 2009 Judge Dana M. Sabraw of the U.S. District Court for the Southern District of California held that the federal government used the wrong methods to collect and test pipe wrap samples. Judge Sabraw noted that the government is required to prove an essential element of its case – asbestos content – through (1) a representative sample, and (2) a specified test method, as prescribed by its own regulations. The asbestos NESHAP contains two foundational requirements relevant to the pipe wrap in question: collection and testing. Following these requirements, all 27 samples were deemed inadmissible at retrial.