The new Oregon Stormwater Discharge General Permit No. 1200-Z has been adopted as of March 25, 2021! While existing 1200-Z industrial stormwater sites do not need to submit a permit application for continued coverage, they will need to make several changes to their stormwater compliance programs to meet the requirements of the new permit. There are a few key dates linked to the rollout of this permit, including:
July 1, 2021 – 1200-Z Permit becomes effective, all existing monitoring waivers expire, and sampling requirements resume for all permittees
August 31, 2021 – Mandatory Stormwater Pollution Control Plan (SWPCP) update submission deadline
July 1, 2025 – Monitoring is reinstated for all permittees for the remainder of the permit term
June 30, 2026 – Permit expiration
Although the revisions to the new permit are not as extensive as originally proposed, there are several requirements that will affect each 1200-Z facility, such as:
Newly established geo-regions for updated statewide benchmarks
Removal of the oil and grease statewide benchmark
Updated statewide benchmarks and impairment parameter reference concentrations
Repeated exceedances of impairment reference concentrations escalate into individual facility numeric water quality-based effluent limits
Samples should be collected for visual observations
Monitoring waivers require 5 consecutive sets of sample results below applicable statewide benchmarks
All facilities must conduct monitoring during the last year of the permit term (monitoring waivers expire)
Discharge Monitoring Reports (DMRs) will be submitted electronically via Your DEQ Online
If you would like to learn how the new 1200-Z Permit requirements may affect stormwater issues at your site, or need assistance in updating your SWPCP, contact Christine Wong at cwong@algcorp.com or at (805) 764-6019.