Is the "consuming 2.8 kg of spinach" statement correct?

In the results log, the update includes

"4/7 (6:20pm): Our first food chain tests are now posted. So far, we have measured spinach, cilantro, grass, and mushrooms. We have detected I-131, Cs-134, and Cs-137 in these samples, but the levels are very low -- consuming 2.8 kg of spinach could give you a radiation dose equivalent to a roundtrip flight from San Francisco to Washington, DC. Not all isotopes are present in all samples, and the levels vary widely"

However, the chart for spinach shows 2.8 Bq/kg, which requires 403kg to equal a roundtrip flight from San Francisco to Washington, DC.

http://www.nuc.berkeley.edu/node/2525#spinach

Also, the date posted says 4/7. But, it's 4/6 still in Berkeley :-)