Are City Public Service Power Plants a major source of ozone in this region and how are they controlling or reducing their contribution to ozone pollution?
Emissions from City Public Service power plants do contribute to ozone formation in the San Antonio region. However, many other sources of pollution also contribute to ozone formation. Perhaps most importantly, City Public Service is required to reduce their NOx emissions about 50% by 2005 according to state rules (Senate Bill 7 and Chapter 117). Here are some details on those requirements: Senate Bill 7 applies to all City Public Service gas-fired units except for AVR plant at Braunig Lake, which is City Public Services newest unit, a combined cycle gas turbine that went on line in mid-year 2000. SB7 is codified in TCEQ Regulations Subchapter I, Electric Generating Facilities, Sections 116.910 to 116.931. It applies to owners and operators of grand fathered facilities, which are facilities that are not new or modified since August 1971. All of CITY PUBLIC SERVICE gas-fired power plants were built or contracted prior to August 1971 so they were grand fathered except for AVR, which was
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