Ok then...based on the word "Dock" and my Weeds of the West book, this is Rumex Crispus L. (Curly Dock) Thanks
Actually you can pull it if you get it before the seeds set. As you can see it spreads a tremendous amount of seeds each year. Might be less invasive here than on the coast, though. Truly diserves the name noxious weed. Harry
They are fairly easy to pull, but at this stage the seeds are unfortunately mature enough to be viable.