ITechTeam,
Well, the diver made his visit. Replaced the relief valve with a solid plug and puttied around the light conduit. We have two main drains in the bottom, one with the relief valve and one that should simply have a solid plug. When opening the second drain he found that there was no plug at all, and it was basically filled with gunite from the original build. Diver cleaned out enough to get the plug in and we called it a day. I filled the pool back up and found that once again it was losing about 1” per day. My guess is that he didn’t effectively clean the gunite out and seat the plug. Bottom line we now have to drain it and take a closer look. This will also let the builder pressure test the main drains. Keeping my fingers crossed it is the plug and we aren’t going to do any excavating in our brand new patio!
Let you know what happened on your end. I will let you know how mine comes out