that is a credit to johnny wong. >> there is another graph where you show increase in the inspections, but not replacement, which i found curious. >> unfortunately, what that first line refers to, total must be inspected, those are responses when we have a problem. this is the chart that tummy passed out to the commission. -- tommy passed out to the commission. that first wrote is response to a simple, -- sinkhole, other calls. in the condition, the second row, that is mileage that will be used to identify what will be replaced. not just this is facing all, this is what needs to be replaced. that will be what goes into the risk model to determine the source for the next several years. that aim is to be able to assess the entire 952 miles of sewers. it will be ongoing. we will have a tv truck logging and review with the tapes and updating our condition assessment. we can program which miles we are doing each year. does that adequately cover your point? the first number is bigger because it is individual spots that have failed in the collection system. >> how many years is the rotation