EPA'S BIOLOGY TEAM DETERMINING CAUSE OF FISH KILLS The Wheeling Freshwater Biology Team began conducting a 7-day chronic toxicity test on May 15 for eight sites along the _South Branch of the Potomac and Shenandoah Rivers_ (http://www.wm.edu/geology/virginia/rivers/potomac-shenandoah.html) to identify the possible source or cause of the mysterious fish kills occurring there. Recent reports of dead and dying fish in the South Branch of the Potomac River are being investigated as is a substantial fish kill in the Shenandoah River and its tributaries in Virginia. Both states are actively cooperating and conducting research. EPA UPDATES AIR QUALITY WEBSITE EPA has made several air quality maps available depicting the current air quality conditions of the Mid-Atlantic region. The maps use the latest Air Quality Index (AQI) values for ozone and particulate matter, and can be found at EPA's "Air Quality" web page at _http://www.epa.gov/reg3artd/airquality/airquality.htm#currentcond_ (http://www.epa.gov/reg3artd/airquality/airquality.htm#currentcond) . The AQI describes the daily extent of pollution in the air, what associated health effects might be present, and what health effects may be experienced a few hours or days after breathing polluted air. For more information on the AQI visit EPA's AirNow web site at _http://www.airnow.gov_ (http://www.airnow.gov/) .
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