I'm a beginner gardener, if that. I admit complete ignorance of all things green and beautiful! A couple of months ago, I hired a company to remove the residential heating oil tank buried in my backyard. After they removed the tank, they filled the hole with dirt and scattered some grass seeds on top of the soil. They didn't stamp down the earth well enough so, after a few weeks, a bit of a gulley developed where the oil tank was. I asked them to come back and fill it in which they did - with SAND. They assured me that the grass generated from the seeds they scattered would grow through it. I feel very nervous every time I look out my window upon that sandy patch which covers about 8 sq. ft. of my lawn. Is it true that the grass seeds will sprout and grass will grow through the sand?