“These tampered cars were emitting nitrogen oxides, or NOx, every day well in excess of legal limits. Volkswagen’s deceitful acts have damaged the county’s ability to improve air quality, reach clean air attainment status and protect our citizens.”
The suit alleges that VW violated seven environmental-related health and safety codes by rigging its diesel cars to avoid emissions standards, including laws related to “unauthorized air emissions” and “anti-tampering” rules. Harris County is an EPA “non-attainment” zone for ozone emissions, a designation reserved for areas that don’t meet federal environmental standards. The NOx emissions produced by tampered VW diesels are known to contribute to ozone formation; from the petition: