RIGIS-CAT-ID    =s44hgc93
 DATA-SET-IDENT  =gwclass
 DISTRIB-NOTES   =(c)rigis 1989 (c) rigis 1993
 THEME-KEYWORDS  =groundwater aquifer quality classification wells
 DESCRIPTION1    =groundwater quality classification for aquifer
 DESCRIPTION2    =recharge and well head protection areas as
 DESCRIPTION3    =determined by ri dept of environmental mngt
 ACC-REV-DATE    =0693
 DATA-STRUCTURE  =vector topological with feature attributes
 COORD-PRECIS    =arc-info single precision
 INTENDED-USE    =water resource management and protection
 INTENDED-SCALE  =24000
 TRANSFER-FORMAT =arc-info export
 TRANSFER-SIZE   =3-6 mb
 SPLOBJ-TYPE     =polygon
 RESOLUTION      =na
 SPLOBJ-COUNT    =673
 AREA-EXT-BND    =LL 219361.000 22904.504 UR 432051.281 340916.594
 AREA-EXCL-BND   =none
 PROJECTION      =transverse mercator
 COORDSYS-UNIT   =RISPC-feet
 HORIZ-DATUM     =nad83
 VERT-DATUM      =ngvd29
 REL-DB-ID       =gwclass-pat
 REL-DB-ORG      =ridem
 FIELD-NAME1     =gwclass-id
 FIELD-CHAR1     =4 5 b
 FIELD-DESC1     =polygon idendtifier
 FIELD-DOM1      =0-372
 FIELD-ASSC1     =na
 FIELD-NAME2     =final class
 FIELD-CHAR2     =6 6 c
 FIELD-DESC2     =groundwater quality classification
 FIELD-DOM2      =gaa gaa-na ga ga-na gb gc
 FIELD-ASSC2     =see bibliographic reference
 FIELD-NAME3     =na
 FIELD-CHAR3     =na
 FIELD-DESC3     =na
 FIELD-DOM3      =na
 FIELD-ASSC3     =na
 FIELD-NAME4     =na
 FIELD-CHAR4     =na
 FIELD-DESC4     =na
 FIELD-DOM4      =na
 FIELD-ASSC4     =na
 FIELD-NAME5     =na
 FIELD-CHAR5     =na
 FIELD-DESC5     =na
 FIELD-DOM5      =na
 FIELD-ASSC5     =na
 FIELD-NAME6     =na
 FIELD-CHAR6     =na
 FIELD-DESC6     =na
 FIELD-DOM6      =na
 FIELD-ASSC6     =na
 SOURCE-CRTR     =ridem uri-edc
 SOURCE-ORIG1    =rigis-ridem gw classidtication data sets 1981-1985
 SOURCE-ORIG2    =points and polygons located by ridem on usgs quads
 BIBLIOG-REF     =ridem-rules and regulations for groundwater qual
 SOURCE-SCAL     =24000
 SOURCE-DATE     =1981-1985
 DATA-DATE       =1992
 AUTO-EQPT       =prime mainframe arc-info
 AUTO-PROC1      =former ridem gwclass coverages were combined with
 AUTO-PROC2      =new data to create new coverage
 AUTO-PROC3      =na
 PROC-TOL        =rigis standards fuzzy-005 rms-002
 PROC-DATE       =0693
 POS-ACCU        =plus or minus 100 feet
 POS-ACCUCK      =visual inspection of overlay plots
 ATTR-ACCU       =rigis standards 99 percent
 ATTR-ACCUCK     =manual checking of attribute tables with source
 DATA-INTEG      =topologivcally complete arc-info polygon coverage
 METADATA-LIST   =0998-js
 CONTACT-TITLE   =gis coordinator-ridem
 CONTACT-ORG     =ri dept of environmental management-water resource
 CONTACT-ADDR    =291 promenade street
 CONTACT-CTYST   =providence ri 02903
 CONTACT-PHONE   =401-222-6483
 CONTACT-EMAIL   =stach@rigis.doa.state.ri.us
 
 gwclass.ref  Attribute Reference Coding For: s44hgc93
RIDEM Ground Water Classification in Rhode Island
Excerpted from:  Rhode Island Dept. of Environmental Mngt.
                 A Summary of Groundwater Classification
                 Draft - January 1990

GAA - Groundwater resources known or presumed to be suitable
      for drinking without treatment

GA  - Groundwater resources known or presumed to be of 
      drinking water quality but are not assigned GAA
 
GAA-NA and GA-NA (Non-attainment Areas) - Areas where 
      groundwater is classified GAA or GA and the 
      current condition does not meet standards established
      for the respective class due to contamination 
      associated with specific sources. 

GB -  Groundwater resources known or presumed unsuitable
      for drinking water use without treatment

GC -  Groundwater resources underlying waste disposal and
      surrounding areas