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NW Washington | There was a Soil Survey of all the soils in the USA years ago and I think the survey has names for all the soils. I am sure it is broken down by states and the NRCS should have access to the survey. Check with the NRCS or maybe Google can find what you need.
https://www.nrcs.usda.gov/
https://websoilsurvey.nrcs.usda.gov/app/ | |
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