After assembling the whole board, I connected it to the power supply to be astonished to see it reading 150ma at 9v. Hm. Seems a bit high. I took out the op amp and checked without it - there was no significant draw. So there was something wrong with the op amp I thought. Well, I have a bunch of them? I decided that the best path of action would be to lift up the pins from each quadrant of the op amp and only plug in the other three. I cycled through all four only to find that the draw remained the same. Most puzzling. I double checked my schematic, my layout and my components. Everything was where it was supposed to be. Hm. I had damaged one of the pins in the process and replaced the ic with another. Similar results. Then I noticed it, I had connected my 9V line to the 4.5v rail. Oh.