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Southern Willamette Valley 2009 Long-Term Groundwater Monitoring Results – Part 1
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Sampling Programs using domestic wells 2000-2001 Nitrate Testing Looked for good coverage of the area, and targeted shallow wells 2002 Study Looked to confirm earlier results, and to determine if any other parameter of concern was present
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Long Term Measuring Overall Groundwater Quality Process of Selection
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Long Term Measuring Overall Groundwater Quality Network of 40 domestic and monitoring wells established
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Long Term Measuring Overall Groundwater Quality DW = Domestic Wells, generally deeper, used on a regular basis GW = Groundwater Monitoring Wells, generally shallower, purged only when sampled
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Long Term Measuring Overall Groundwater Quality What is being measured pH Specific Conductance Temperature Dissolved Oxygen Nitrate Sulfate (every other time)
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Long Term Measuring Overall Groundwater Quality Sampling Program occurs every 3 months (quarterly) DW Wells take about 2 days GW Wells take about 4-5 days 13 Quarterly events completed, next one is due in November
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Changes to Program 2 DW wells were discontinued (DW-4 & DW-14) One GW Well was dug out (GW-15) One GW Well still a hit and miss (GW-2) Long Term Measuring Overall Groundwater Quality
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Sampling Data
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