SAMPLE_TYPE	COLUMN_NAME	LABEL	LEGAL_VALUES	RANGE_LOW	RANGE_HIGH
DESIGN	AG_ECO9	"NARS 9-level reporting region (2015), based on aggregated Omernik Level III ecoregions"	CPL|NAP|NPL|SAP|SPL|TPL|UMW|WMT|XER|		
DESIGN	EPA_REG	EPA Region	Region_01|Region_02|Region_03|Region_04|Region_05|Region_06|Region_07|Region_08|Region_09|Region_10|		
DESIGN	SITE_ID	"Site ID for the study and year sampled.  Preferred form is NRSnn_MM-xxxxx  where  nn is current cycle year (04, 08, 13, 18, etc), MM is two letter state code, and xxxxx is between 10001 and 99999. Text.  No missing values allowed."			
VERIF	DATE_COL	Date collected	|01|02|03|04|05|06|07|08|09|10|11|12		
VERIF	SITE_ID	Identification code for site			
VERIF	SITESAMP	Did you sample this site (Y/N)	|Y|N		
VERIF	STATE	State	|AK|AL|AR|AZ|CA|CO|CT|DC|DE|FL|GA|HI|IA|ID|IL|IN|KS|KY|LA|MA|MD|ME|MI|MN|MO|MS|MT|NC|ND|NE|NH|NJ|NM|NV|NY|OH|OK|OR|PA|RI|SC|SD|TN|TX|UT|VA|VT|WA|WI|WV|WY		
VERIF	VISIT_NO	Sequential number of visit to site	|1|2|R		
	SAMPLE_TYPE	Code identifying sample type			
	UID	Unique identifier for the site/visit			
	UNIQUE_ID	Unique site ID based on location that does not depend on year sampled or any other factor. Form is NRS_ss_nnnnn  where ss state and nnnnn is number that starts at 10001. No missing values allowed.			
BERW	BENT_MMI_COND	Condition class based on benthic MMI score	Good|Fair|Poor|Not Assessed		
BERW	BENT_MMI_COND	Condition class based on benthic MMI score	Good|Fair|Poor|Not Assessed		
BERW	COMP_PT	Metric score for composition metric	numeric		
BERW	DIVS_PT	Metric score for diversity metric	numeric		
BERW	FEED_PT	Metric score for functional feeding group	numeric		
BERW	HABT_PT	Metric score for habit	numeric		
BERW	MMI_BENT	Benthic MMI score	numeric		
BERW	RICH_PT	Metric score for taxa richness	numeric		
BERW	TOLR_PT	Metric score for tolerance metric	numeric