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Universal Propulsion Company (UPCO) is a former-aerospace manufacturing facility in operation from August 14, 1972 until January 9, 2010. It was located at the intersection of Central Avenue and Happy Valley Road in north Phoenix. UPCO manufactured solid propellant actuated devices, aircraft ejection seats, aircrew escape systems, stun grenades, gas generators, and other miscellaneous products related to the military and aerospace industries. On March 23, 2004, officials from UPCO informed ADEQ that recent groundwater monitoring tests conducted at the facility revealed the presence of perchlorate ranging from 43 to 130 micrograms per liter (ug/L) or parts per billion in their groundwater monitoring wells. UPCO is currently monitoring groundwater and proceeding with corrective action at the site.
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