Took the first step towards building my shop

[Frank S]

I'm no soil engineer, or geologist; or decent gardener, lol.
Looks same as 'our' red dirt, comparing stockpile angle of repose. Identical to that around my building, elevation 849' [about 75' higher than Missouri River] and completely different than house at 997' [our famous black dirt]. Dense, dry, fine and packs like roadway. You can mold it cleanly enough to use as concrete forms. Astounding somehow, considereing our locales are 650 miles apart.
And to offshore forum members, that's a 9-1/2 hour flatland drive.

Yes it is a red Corse sandy clay with the correct moisture content while packing it will pack down so hard that it takes a pick to break it up by hand and once fully compacted it remains stable