ADN by Sean Cockerham.  The Parnell administration is looking to hire a $2 million consultant to review proposals for changing state petroleum taxes to encourage a natural gas pipeline.  The bid document says the state anticipates oil companies that would produce the gas from the North Slope will seek changes to Alaska's oil and gas production tax. The consultants' work would include "evaluation of options for modifying the oil and gas tax structures to facilitate a major gas pipeline project."  Revenue Commissioner Pat Galvin (NGP Photo) said legislators, as well [...]