Which form is required to register a previously unregistered cargo tank unit in Texas?

To register a previously unregistered cargo tank unit in Texas, you need to complete CNG Form 1007. This form is specifically designed for the registration process of cargo tanks that have not been registered before. It collects essential information necessary for the registration and ensures compliance with state regulations regarding the handling and transport of compressed natural gas.

Other forms listed may serve different purposes that are not applicable to the registration of unregistered cargo tank units. For instance, CNG Form 1004 is generally used for other compliance measures, while CNG Form 1007A and CNG Form 1007T might pertain to specific certifications or modifications but do not fulfill the registration requirement for a new cargo tank unit. Therefore, CNG Form 1007 is the correct choice for the registration process.