we have aa credit, and our ratings were affirmed by both moody's and s&p, and as i'm sure you're aware, rates are extremely low right now. i'm sure that sfmta would not have another opportunity to take advantage of these rates, and i think you know over the past week treasury rates have gone up slightly, so we want to do this transaction in the same window as our refunding, but we also want to move quickly in case rates go up, so again, we wanted to secure those low rates so we can pay the lowest cost possible on this debt. you'll see in this package that what we're requesting is the option to issue up to 300 million, but what the proposition lists is 287 million, and the reason for the discrepancy is when we initially brought this to our board of supervisors, we conducted a rough order of magnitude analysis. we knew that this was something we wanted to move ahead with, but we needed to do some initial analysis of our capital plan to get some idea of what projects to fund and where we could get some capital into the budget. with that, we decided that 287 was the amount that we wanted t