"VARIABLE" "DESCRIPTION" "SAMPLE_TYPE" "UNITS" "RANGE_LOW" "RANGE_HIGH" "LEGAL_VALUES" "DATE_COL" "Date of primary site visit" "FLAG" "Flag assigned by field crew" "PUBLICATION_DATE" "Date the dataset was published to the NARS site" "SAMPLE_TYPE" "Code identifying sample type" "SITE_ID" "Identification code for site" "SITE_USE" "Result classifies each point in a way that indicates how a point can be used in analysis or not" "STATE" "State abbreviation" "UID" "Unique identification number for a site visit" "VISIT_NO" "Visit number within the year"