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Mineral Land Classification Aggregate Materials In
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CHAPTER 18 - ENVIRONMENTAL HEALTH SUBCHAPTER …
ehs.ncpublichealth.com(32) "Parent material" means the mineral matter that is in its present position through deposition by water, wind, gravity or by decomposition of rock and exposed at the land surface or overlain by soil or saprolite. (33) "Ped" means a unit of soil structure, such as an aggregate, crumb, prism, block, or granule formed by natural processes.