we asked one of our consultants, htr, to put together a memo of the cost of barging from various points in san francisco, the port being one. it was concluded that barging is more than twice as expensive as trucking. the numbers we received was $21 per ton versus $8 per ton for trucking. as an infrastructure perspective, we could consider this in the short term, but the costs and economics are not there. the department did look at other regional barging options, including barging to oakland or sacramento and from there to landfill by rail. according to art consultant, it would add $123 million to $343 million to the price of the contract over 10 years. additional considerations make it less desirable. no landfill is directly bars accessible today. for environmental reasons, leakage as well as littere -- they are all located away from waterways. it does require double or triple handling of waste, which has a significant impact. the conclusion, following are two months of work, talking to the port, and working with the consultant, no options are cost- efficient and viable. the chairwoman