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Southern Willamette Valley 2009 Long-Term Groundwater Monitoring Results – Part 1

Southern Willamette Valley 2009 Long-Term Groundwater Monitoring Results – Part 1. 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,

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Southern Willamette Valley 2009 Long-Term Groundwater Monitoring Results – Part 1

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  1. Southern Willamette Valley 2009 Long-Term Groundwater Monitoring Results – Part 1

  2. 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

  3. Long Term Measuring Overall Groundwater Quality • Process of Selection

  4. Long Term Measuring Overall Groundwater Quality • Network of 40 domestic and monitoring wells established

  5. 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

  6. Long Term Measuring Overall Groundwater Quality What is being measured • pH • Specific Conductance • Temperature • Dissolved Oxygen • Nitrate • Sulfate (every other time)

  7. 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

  8. Long Term Measuring Overall Groundwater Quality • 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)

  9. Sampling Data

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