Yes, we added 140 wells, so now we have approximately 350 wells. Of those 350, I think about 55 are specifically designed to pump water out from the subsurface. As seepage occurs and approaches those particular wells that are intended to protect and ensure that groundwater that's affected by seepage does not leave our lease, those 55 wells pump it back into our system for processing.
The balance of those wells, just shy of 300, are used for monitoring. We have a very rigorous process to collect data from each of those wells on a very regular basis. I can ask Helga to comment on the frequency. I believe some are monthly and some are quarterly, but—