While the label on a ChartAnnotation must be brief to fit on the chart timeline, the description field has room for a complete account of the event — for example, "Groundwater extraction pump installed on MW-3 manifold; extraction rate approximately 15 gpm" or "EPA-ordered interim corrective action measure pursuant to Section 3008(h) Order." Compliance staff writing regulatory progress reports can use the description text as a source for narrative sections, since the events documented here often need to be explained in detail to regulators reviewing the site's remediation performance.
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Chart Annotation Description
The `description` on a ChartAnnotation provides a fuller explanation of the event that is shown when a user interacts with the annotation marker on the chart.