dr. thompkins mention that concern regarding [indiscernible], effectively, [indiscernible] there are dust particles below a certain size. [indiscernible] the dust concentration particles less than 10 5 in size so zero through 10. so that fraction includes 2.5+ the range of 2.5 through 10. what we have done to deal with that concern is set our action level thresholds to the lower criteria for 2.5. meaning, our action levels are set lower to the action level so we can ensure that not only are we not exceeding the 10 concentrations that staying below the 2.5. the monitoring we are providing on-site is real-time data. it is constantly recording so we can check those monitors at any time. they have an alarm but once it exceeds the action level, there is a light signal that we can then review the data and determine what activity within the vicinity of that monitor may be contributing to elevated dust readings and we can modifier mitigations formally. we do have monitor set up near sensitive receptors since there is an elementary school and the existing residences both on jamestown and we will b