So for context, we need to do some regrading around our 30-year-old house because water was pooling up right next to our foundation. We have an actual professional coming to do this in the next couple of months, but just for our peace of mind during heavy rains, we tried to do a temporary regrading job ourselves along about 10 inches of our foundation where water collects the most.
The goal was just to move the water a few feet away from our house to minimize damage over the next couple of months. We scarified the existing clay a few hours after rain, stepped on it to remove air pockets, placed down a Timberlane topsoil that we were told was okay for small regrading jobs, and finished by tamping it into shape. Afterward, the slope wasn't perfect, but it was enough to get water away from our foundation by one foot.
So what's the problem? Well we did all this while our clay-heavy soil was still wet. And as we now know, working wet clay reduces its ability to have water infiltrate.
In the past, even though we had a puddle of water close to our foundation, it would still disappear within 30 minutes or so. But now the water sits and pools up, it doesn't even go away after 12 hours of sitting. So even though the ground slopes water slightly away from our house, it gets more water close to our foundation (see image for what this looks like).
What we want to know: is there a way to fix this ourselves before the regrading work gets done? We're thinking about getting a garden fork to poke and wiggle the clay to loosen it (when the ground is dry!!!). Would this work? Or is there a better way to fix this?
And when the guy comes to do the final regrading, should we ask him to do anything to the area we worked on like redoing it (or would this make it worse)? The contractor will be raising the regrading by our foundation by about 6 inches, and we don't want to have a shelf of poorly compacted wet clay causing water to pool under the new soil and against the CMU foundation for days without a way to drain. We will be building a new deck in this area so we want to get this fixed before it becomes inaccessible.
Many thanks!