How TCEQ New Source Review Works for Oil and Gas
When a source is too large or too unusual to fit a permit by rule or a standard permit, a Texas operator has to go through case-by-case new source review before building it. This page explains, in concept, what new source review is, what a case-by-case construction permit involves, and how its monitoring conditions carry into operations. It is written for the operator scoping a project, and it defers to qualified air-permitting personnel on the application itself, which is detailed and facility-specific.
TCEQ New Source Review in one line: TCEQ new source review (NSR) is the case-by-case air authorization for constructing or modifying a source that does not fit a permit by rule or a standard permit. Rather than pre-set conditions, the operator applies for a permit whose emission limits and monitoring are developed for the specific facility, TCEQ reviews it, and the resulting permit authorizes construction and operation under conditions the facility then has to meet and demonstrate.
When a Source Needs Case-by-Case Review
New source review is the authorization of last resort on the construction side of the ladder: it applies when a new or modified source is significant or unusual enough that no permit by rule and no standard permit covers it. Because there is no pre-written authorization to claim, the operator has to make the case for this specific facility, and TCEQ develops permit conditions tailored to it. This sits above the lighter authorizations described in the guide on TCEQ air permit tiers.
The trigger is essentially exhaustion of the lighter options combined with the source's significance. An operator scoping a project works down from the source's emissions and characteristics: does a permit by rule cover it, does a standard permit, and if neither, it falls to new source review. That decision, covered in the comparison of permit by rule and standard permit, is best made early, because a case-by-case permit takes more time and effort to obtain than the lighter authorizations.
The critical practical implication is timing. Because new source review authorizes construction, it generally has to be obtained before building the source, so a project that needs it has to build the permitting timeline into its schedule. Discovering late that a source needs case-by-case review rather than a lighter authorization can delay a project, which is why the tier determination belongs at the front of project planning, not the end.
What the Permit Conditions Mean for Operations
A case-by-case NSR permit comes with conditions developed for the facility: emission limits, operational parameters that keep the source within those limits, and monitoring and recordkeeping to demonstrate it. Because these are tailored rather than pre-set, they can be more specific and more demanding than the standardized conditions of a lighter authorization, and they define how the source has to be operated and proven compliant for its life.
Those conditions carry straight into operations as monitoring obligations. A limit on an emission source usually implies a parameter to monitor - a control device temperature, a flow, a runtime - so that the source can be shown to stay within its authorized envelope. This is the same translation from permit condition to monitored point that runs through Texas and federal permitting generally, and it is where a construction permit becomes an ongoing operational discipline rather than a one-time approval.
A cloud SCADA platform such as Merobix supports living with an NSR permit because it trends the parameters the conditions care about and retains the history, so a facility can demonstrate continuous compliance with its tailored conditions rather than reconstructing evidence. Where the NSR-permitted source is also part of a major source, its conditions feed the Title V operating permit that consolidates the site's requirements, described in the explainer on the Title V air permit, and the mapping of conditions to tags is covered in the guide on mapping permit conditions to SCADA tags.
Frequently Asked Questions
When does an oil and gas source need TCEQ new source review?
When the source is significant or unusual enough that no permit by rule and no standard permit covers it. New source review is the case-by-case construction authorization used when the lighter, pre-defined options are exhausted, so an operator scoping a project works down from the source's emissions and characteristics: if a permit by rule or a standard permit fits, use it; if neither does, the source falls to new source review. Because a case-by-case permit takes more time to obtain, this determination should be made early in project planning, not discovered late.
How is a case-by-case NSR permit different from a standard permit?
A standard permit uses conditions the state pre-wrote for a category of source, so the operator adopts standardized terms. A case-by-case new source review permit has conditions developed specifically for that facility, because no standardized authorization covers it. That makes NSR conditions potentially more specific and demanding, and the permit takes more effort and time to obtain. Both authorize construction and operation, but NSR is the tailored path for sources that do not fit a pre-defined authorization, sitting above permit by rule and standard permit on the construction ladder.
Do I need the NSR permit before building the source?
Generally yes. New source review authorizes construction, so a source that requires it typically has to have the permit before it is built, which means the permitting timeline has to be built into the project schedule. Discovering late that a source needs case-by-case review rather than a lighter authorization can delay a project significantly. This is why determining the correct permit tier belongs at the front of project planning, and why operators scope the emissions and characteristics of new sources early enough to allow for the longer NSR process where it applies.
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