Western States Petroleum Association (WSPA) is a non-profit trade association that represents companies that account for the bulk of petroleum exploration, production, refining, transportation and marketing in the six western states of Arizona, California, Hawaii, Nevada, Oregon and Washington. Founded in 1907, WSPA is the oldest petroleum trade association in the United States of America. WSPA's headquarters are located in Sacramento, California. Additional WSPA locations include offices in Torrance; Santa Barbara; Bakersfield; Scottsdale, Arizona and Olympia, Washington. More information...
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