Is there a camping site around this location? May be near trail head start?

Hemple Creek is just east and across the road from Lake 22 trailhead. It is a day use/picnic area only.

I believe there is one on the other side of the highway, about 1/4 mile passed the trailhead parking lot

I don't remember seeing campsites on this trail. I was there when the trail was snow covered. So it might not have been visible anyways. But there were multiple campgrounds before lake 22 trailhead. For example verlot campground is like 2 miles before lake 22 trailhead.