The only way to know if the soil is contaminated is to have a soil test done. Lead in paint was completely banned in 1978 so age matters in speculating about lead. Concrete will make concrete alkaline so a soil test would be a very good idea. Testing for lead is also available although it is more expensive than a pH test. Your city or health dept may test for lead.
https://soilsextension.webhosting.cals.wisc.edu/wp-content/uploads/sites/68/2015/11/Lead-in-Home-Garden-Soil-A4089.pdf
https://extension.umd.edu/resource/lead-garden-soils/

https://www.minneapolismn.gov/resident-services/property-housing/healthy-homes/lead/testing-soil/

Thank you!  Do you know of where we could get our soil tested for other heavy metals?  There was wood placed there as well and wondering if there is arsenic in the soil from the wood as well. 

On Saturday, July 27, 2024, Ask Extension <<personal data hidden>> wrote:

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Dear Kelly, here's the response to your question:

The only way to know if the soil is contaminated is to have a soil test done. Lead in paint was completely banned in 1978 so age matters in speculating about lead. Concrete will make concrete alkaline so a soil test would be a very good idea. Testing for lead is also available although it is more expensive than a pH test. Your city or health dept may test for lead.
https://soilsextension.webhosting.cals.wisc.edu/wp-content/uploads/sites/68/2015/11/Lead-in-Home-Garden-Soil-A4089.pdf
https://extension.umd.edu/resource/lead-garden-soils/

https://www.minneapolismn.gov/resident-services/property-housing/healthy-homes/lead/testing-soil/

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Evelyn Locke, MN Master Gardener, Tree Care Advisor, Volunteer

https://extension.umn.edu/yard-and-garden

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https://soiltest.cfans.umn.edu/
Call and ask for what they recommend, the cost of testing can add up quickly so being strategic will be practical. I would test for lead or arsenic first and if they are high invest in raised beds and clean soil, because remediation is very costly.

Thank you so much!  Very much appreciated!  

 I found some fact sheets for you

https://en.wikipedia.org/wiki/Wood_preservation

https://www.epa.gov/ingredients-used-pesticide-products/overview-wood-preservative-chemicals

What to do 
https://archive.vpr.org/commentary-series/pressure-treated-wood/
https://www.pca.state.mn.us/sites/default/files/w-hw4-67.pdf