Sand & Gravel General Permit

Permit Information

The purpose of the Sand & Gravel General Permit is to control the discharge of pollutants from sand and gravel mining operations and related facilities into waters of the state.  This general permit provides coverage for discharges of process water, stormwater, and mine dewatering water associated with sand and gravel operations, rock quarries and similar mining activities, including stockpiles of mined materials, concrete batch operations, and hot mix asphalt operations. The permit authorizes wastewater discharges to waters of the State of Washington subject to the permit conditions.

What facilities require coverage under this permit?

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:

• 0811 Timber Tracts (sand and gravel point source activities)
• 1411 Dimension Stone
• 1422 Crushed and Broken Limestone
• 1423 Crushed and Broken Granite
• 1429 Crushed and Broken Stone, Not Elsewhere Classified
• 1442 Construction Sand and Gravel
• 1446 Industrial Sand
• 1455 Kaolin and Ball Clay
• 1459 Clay, Ceramic, and Refractory Minerals, Not Otherwise Classified
• 1499 Miscellaneous Nonmetallic Minerals, Except Fuels
• 2411 Logging (sand and gravel point source activities)
• 2951 Asphalt Paving Mixtures and Blocks
• 3273 Ready-Mixed Concrete

In addition to the activities listed above, Ecology may require similar activities (e.g. SIC 3272 - Concrete Products) to obtain coverage under this general permit.

• Air Quality
• Archeological and Historical Preservation
• Land Use, including forest practices and reclamation
• Local permits
• Water Quality
• Water Resources
• Wetlands
• General Requirements
• Federal Requirements
• Aquatic Resource Permits (e.g. HPA)

For questions about these and other permits, go to Office of Regulatory Assistance Environmental Permitting Resources.

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