The Problem What to do Rules References Glossary

 

The Observed Data Popup Window

 

Once you have sited a monitoring well a separate Observed Data pop-up window appears.

 

The Observed Data window provides information on the the monitoring well location, the sample collection calendar date and the time in days since the release was reported, the water-table elevation and the concentration of the contaminant in the water sample. If chromium was not found (concentration of 0.00 milligrams per liter) in the water sample, this indicates that the plume was not sampled by monitoring well at the time of sample collection. However, if the well was sited downgradient of the plume within its groundwater flow path and resampled at a later time, chromate would be present in the new sample.

 

Other information is also given in the table, including the aquifer hydraulic conductivity and porosity, derived from well tests. These tests were conducted by your consulting company to help you develop better estimates of travel distance. With these data you can determine if the plume is moving incrementally faster or slower since the last calculation of average groundwater velocity and thus you can fine-tune your estimate of plume location. If the hydraulic conductivity is higher, the plume will move incrementally faster. In contrast, if the porosity is higher, the plume would be moving incrementally slower.

 

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