Hot Mix Asphalt Plants General Air Quality Permit Request for Coverage: Columbia Asphalt & Ready-Mix - Wapato Quarry

This page contains documents related to EPA's approval of Columbia Asphalt & Ready-Mix’s Request for Coverage under the General Air Quality Permit for New or Modified Minor Source Hot Mix Asphalt Plants in Indian Country (HMA General Permit) for the Wapato Quarry on the Yakama Indian Reservation, near Wapato, Washington.

The EPA approved Columbia Asphalt & Ready-Mix’s request for coverage on May 25, 2018. The EPA administratively amended the approval on March 23, 2022. The amended approval became effective upon issuance.  

For a copy of the general permit and related documents, visit Hot Mix Asphalt Plants (Final Rule).

• Columbia Asphalt & Ready-Mix SQCS – Wapato Quarry

Administrative Amendment Permit Number: R10TNSR01201 (replaces R10TNSR01200)

Approval Documents

• Approval of Request for Coverage (HMA): Columbia Asphalt & Ready-Mix-Wapato Quarry (pdf) (263.71 KB, March 23, 2022)
  EPA's approval of coverage under the HMA General Permit.
• Technical Support Document for Approval of Request for Coverage (HMA): Columbia Asphalt & Ready-Mix - Wapato Quarry (pdf) (253.01 KB, March 23, 2022)
  Technical information supporting EPA's approval of coverage under the HMA General Permit.