First off I don't do much in the way of irrigation unless I need to fix a line I hit when doing grade and seed work, and the sprinkler contractor I work with is out of town for a few weeks. I have a job that I am bringing dirt in and going to fill in some low areas in the yard that have sunk pretty good (6"+), and the Control valve was already low. What is the best way to raise it? Needs to come up 6" to 8" and I was thinking a riser like is used by water dept, but no luck finding one. The dimensions are 9 1/4" wide and 2" deep. It is from Carson Industries and it says Irrigation Control Valve on the top of the lid, but probably from 30 years ago when my local contractor put it in. Any ideas or suggestions would be great.