Sand & Gravel Stormwater Permit

Sand & Gravel Permit - Qualifying Activities

Those facilities with industrial activities designated by the following Standard Industrial Classification (SIC) codes are subject to coverage under the Sand and Gravel General permit:


  • 2951 Asphalt Paving Mixtures and Blocks
  • 1446 Industrial Sand
  • 1459 Clay, Ceramic, and Refractory Minerals, Not Otherwise Classified
  • 455 Kaolin and Ball Clay
  • 1442 Construction Sand and Gravel
  • 2411 Logging (sand and gravel point source activities)
  • 1423 Crushed and Broken Granite
  • 1499 Miscellaneous Nonmetallic Minerals, Except Fuels
  • 1422 Crushed and Broken Limestone
  • 3273 Ready-Mixed Concrete
  • 1429 Crushed and Broken Stone, Not Elsewhere Classified
  • 0811 Timber Tracts (sand and gravel point source activities)
  • 1411 Dimension Stone


 
More information is available on the Department of Ecology Website.