Summary

EPA is issuing a notice of proposed action under the Clean Water Act. EPA is proposing to issue a National Pollutant Discharge Elimination System (NPDES) permit renewal (No. AZ0024511) to White Mountain Apache Tribe (“WMAT”) for a sand and gravel wash process facility located on Farm Road, approximately one mile southwest of the community of Canyon Day in Gila County, Arizona.

WMAT’s Department of Public Works operates the sand and gravel facility to provide materials for use in construction and fill. Materials crushed and washed at the plant are mined on the Tribe’s land then transported to the plant for processing. Approximately 500 tons of sand and gravel are crushed and washed annually at the plant. Wash water is pumped from the White River then mixed with the crushed material to help separate grades of sand and gravel. Process generated wastewater flows to a sediment trap then to a settling pond where remaining solids collect before the water is discharged through a simple corrugated pipe to a rock-bottomed spillway that discharges to the adjacent White River.

***Please bring the foregoing notice to the attention of all persons who would be interested in this matter. ***