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Southern Willamette Valley May 2009 Extended Monitoring Results

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A long time ago Glen Mutti OSU Grad Student What was needed to determine a 1.0 mg/L change in Groundwater quality

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What could be done in lieu of installing another 20-30 wells?

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What needed to happen Locations to gather data were evaluated Well logs were researched Project summary and permission slips were mailed ~200 residents Telephone and mail follow-up on no response Almost 2 weeks of field work with 3-4 samplers Lots of discussions

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Nitrate (mg/L) Statistics for the Synoptic Event Compared with the Long Term Monitoring Locations Long Term Aug 2006 - July 2009 Synoptic May 2009 Long Term May 2009 Mean4.905.735.27 Standard Deviation5.444.855.44 Min0.01 Maximum27.635.927.5 Median4.685.744.60 25% data below0.722.31.11 75% data below6.418.47.16 Total number49210836

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THE END