SamplingFeatureType ODM2 Working Group A vocabulary for describing the type of SamplingFeature. Many different SamplingFeature types can be represented in ODM2. SamplingFeatures of type Site and Specimen will be the most common, but many different types of varying levels of complexity can be used. Excavation An artificially constructed cavity in the earth that is deeper than the soil, larger than a well bore, and substantially open to the atmosphere. The diameter of an excavation is typically similar or larger than the depth. Excavations include building-foundation diggings, roadway cuts, and surface mines. SamplingSolid Originally from USGS Site Types This is a term from the USGS site types http://wdr.water.usgs.gov/nwisgmap/help/sitetype.html that was originally included in the CUAHSI SiteTypeCV. It is more appropriate as a SamplingFeatureType.