CDPHE recently released new requirements for minor sources that have combustible emissions.
While most gas stations are exempt if you are in truck repair or truck fabrication facilities this notice is for you.
The new modeling guideline is not likely to apply to gas stations. The main change in the guideline was lowering the 1-hr NO2 (nitrogen dioxide) modeling threshold for sources inside the nonattainment area and in disproportionately impacted communities. It is unlikely that gas stations would have equipment or processes on site that produce combustion emissions and therefore NOx. CDPHE does not model VOC emission directly based on minor source criteria.
CDPHE Releases New Modeling Guidelines: CDPHE released their new modeling guidelines for minor sources of air pollution on Monday, March 3. The updated guidelines clarify when modeling or a modeling determination is required in an air permit application, while further protecting people’s health and the environment. Most notably, the guidelines include more protective modeling thresholds for nitrogen oxides that apply to minor sources located in disproportionately impacted communities, including areas that are overburdened by air pollution and areas that do not meet federal health standards for ground-level ozone. More information can be found here. Specifically, if you are in the non-attainment area and in a DIC, you have to perform modeling if your short-term emissions exceed of 0.46 lb/hr2 – very low number and modeling will be difficult to pass, likely leading to halted development in those areas.