... of the bond and bond issuer and provide information on how bond issuance costs vary between governmental and private activity bonds, including the extent to which private activity bond issuers ... billion of bonds. Bonds placed into the transportation and electric power categories were the largest bonds, averaging $81.6 million and $72.9 million, respectively, per bond issue. The Long ... transmission lines, substations, and transformers, and about $850 million for refunding purposes. The largest transportation bond in 2006 was a $2.0 billion mass transit bond sale by the Hudson Yards...