All commercial garage drains shall connect to a ________ interceptor.

The correct term for the type of interceptor that commercial garage drains must connect to is a Type I interceptor. Type I interceptors are designed specifically for applications where grease, oil, and sand may be present, which is common in a commercial garage environment due to vehicle maintenance activities. These interceptors are essential for minimizing contaminants that can enter the municipal sewer system and for preventing blockages and pollution.

In contrast, other types of interceptors may serve different functions or comply with regulations for other specific scenarios that do not apply to the typical conditions found in a commercial garage. Therefore, adhering to the requirement to connect to a Type I interceptor ensures the drainage system meets local codes and helps in proper waste management practices. Understanding these distinctions is crucial for maintaining compliance and providing effective waste handling in commercial facilities.