I want to say it is quackgrass, a nasty weed. The way the leaves cross over seems to be a marker. Look here: ...and I'm too new to post a URL directly, so do a google search for purdueturftips june 2015 weed of month
I have this in my yard. The problem is, it spreads through rhizomes. When you are digging around, you'll find things that look like white, cooked spaghetti connecting tufts of grass. If you leave that in the ground, you will get it growing back.
I've taken to using a potato fork (with lots of overlapping) to loosen soil in an area I want to clear up for planting, then using a claw to break up as much of the thatch as possible, knock dirt off the roots, and set the weeds aside. Then I claw through the dirt itself and look for any rogue roots. They generally don't go deep, but they are insidious.
I read last night that you can compost this, but you need to either dry out the roots (laying in the sun for a few weeks, or putting in a black plastic bag in the sun for a week) or make "weed soup" by filling a bucket of pulled-weeds with water, then weighing the weeds down with rocks, and letting it sit for a few weeks; the remaining mush can be composted. Supposedly, a good hot pile compost will kill the roots and seeds.
