relatively unchanged from last year of 1.59 billion dollars and i'd note that at current spending lechls we're just barely holding our ground year over year as inflation and renewals add to the costs and as we work projects off. there's another 463 million dollars in what we call conditional seismic work and that may or may not be required to be made over the 10 year period. so as such we treat it, we show it separately but we don't add it into the total need and i'll talk a little bit more about what triggers seismic. in the pie chart it shows a breakdown of those elements again as maintained in the data base for state of good repair, our 1.6 billion dollars is broken into the three elements, the backlog, which essentially equals our deferred maintenance, what's already on the books, what we haven't done, it's not the same as the capital appreciation number that elaine referred to. in fact, this number isn't part of hers, hers really reflects the next item, which is the renewal. so as we go forward over the next 10 years we expect some systems to wear out and have to be replaced, that's

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