the integrity test today? >> we will take the pressure readings when we close the choke valve, and that will be done slowly to see if there are pressure changes as we start to restrict the flow and we don't do anything prematurely. it will also tell us something about the flow, empirical data we haven't had to date. let's not get wrapped up in the six hours. that's a horizon we look at for the pressure readings. >> could you close down that vent today? >> no. the capping stack -- all three ways for the hydrocarbons to exit will be closed, but the last one will be the choke line because it's got a variable valve that we can close in increments. it is not just an open and shut issue. the other ones are either open or shut. that will allow us to slowly close and look at the pressure while we're doing it. >> when? >> this afternoon. >> i know you mentioned the 48 hour time frame. i know you talk about six hours