(Copied from the DIY Oil Testing guide)
There are lots of types of samples (see Sampling), but w...
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Here's a great resource for soil sampling. Section 8.3.2 gives a good start for a step-by-step protocol for surface soil sampling. Table 8.2 is super useful for sample holding times, how full to fill the vials, etc for different soil analyses. https://archive.epa.gov/region9/toxic/web/pdf/ee-soilsampling-sop-env-3-13.pdf
Here's an answer from the DIY Oil Testing guide by @gretchengehrke and @eustatic
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Here's a great resource for soil sampling. Section 8.3.2 gives a good start for a step-by-step protocol for surface soil sampling. Table 8.2 is super useful for sample holding times, how full to fill the vials, etc for different soil analyses. https://archive.epa.gov/region9/toxic/web/pdf/ee-soilsampling-sop-env-3-13.pdf
Here's a permalink to the PDF on our site: ee-soilsampling-sop-env-3-13.pdf
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