The Oklahoma Department of Environmental Quality (DEQ) has issued the "General Permit OKR10 for Stormwater Discharges from Construction Activities within the State Of Oklahoma". This permit will replace Construction General Permit (CGP) OKR10, which expired on September 12, 2017. Both new operators and existing permittees must obtain coverage under this new permit in order to discharge stormwater from construction activities involving one acre or more. The permit's effective date is October 18, 2017.

In order to receive an authorization, a Notice of Intent (NOI) must be filed with DEQ along with payment of the application fee and annual permit fee. An NOI must be filed at least 30 days prior to commence of new construction activity. An operator of an on-going construction project or a construction project that started prior to the effective date of this permit must complete a new NOI form within 90 days of the effective date of this permit (January 15, 2018). Also, a stormwater pollution prevention plan (SWP3) must be developed and implemented in accordance with the requirements in Part 4 of the permit.

The new permit has a number of updates to comply with EPA's 2017 CGP requirements. One of the most significant changes is the clarification of the DEQ's authority over the natural gas liquid extraction plants identified under SIC code 1321, and service company base operating stations identified under SIC code 1389. Any construction activities associated with facilities identified under SIC codes 1321 and 1389 are required to be covered under this permit.

The final permit, forms, and suggested templates for permit requirements are available on the DEQ's website.

A fact sheet that details changes to the permit is available here.

For specific details about the effects to your facility, contact Michael Lowther by calling (918) 622-7111.