I'm planning to build a home on this pre-existing foundation that was poured back in 2005. The prior owner got sick and abandoned the project. The lot is located in northern Utah at about 6,800 feet, lots of snow, freezing temps, very high water table in the spring, there is a substantial creek that runs close to the foundation. Every year the foundation fills up with water when the snow melts. Recently I pumped out the water, and it didn't fill back in, so I think the water table is below the dirt on the inside of the foundation, which is a couple feet below grade. I recently back- filled around the outside of the foundation, but for the twelve years it was not backfilled. So every year the footings were exposed to lots of water and freeze / thaw cycles. I had an engineer inspect the foundation and he thinks its ok to build on, he did an elevation analysis with surveying equipment and its all within an inch. There are hairline cracks, I was told those are normal. Also had a couple seasoned home builders look at it, and they think its ok to build on, not ideal, but sufficient for a single story home. Does anyone have any advice for me on this? I'm worried mostly about the soundness of the footings, with all the water and freezing and thawing. Or considering there are no major cracks and its level, maybe its ok? Soil test? Have someone analyse a core sample? Any advice related to foundation or otherwise would be much appreciated! Currently getting house plans wrapped up, hoping to apply for building permit in the next few weeks. Thank you!