Process Description:
GPS coordinate locations for NJEMS sites were collected beginning in 1993. The GPS data was processed (including differential correction) and the resulting site coordinates were passed on to NJDEP DOIT staff who loaded the coordinates into the NJEMS Site Masterfile database. NJDEP permitting staff also entered coordinate data for sites without already existing GPS coordinate values. Address-matched coordinates were generated for sites without coordinates in July and September 2004, using TIGER and GDT roads. The default matching options were selected, including spelling sensitivity: 80, minimum candidate score: 10, minimum match score: 60. NJEMS site records associated with dry cleaning facilities were exported to an Excel spreadsheet which was later reformatted to a .dbf file. This was then joined to the NJEMS sites layer in ArcMap. Once the join was done, the NJEMS sites records that made a successful join to the dry cleaning facilities table, were exported into the new dry cleaning facilities layer.