CSLB Class B General Contractor's License Practice Exam

What is the best way for a contractor to locate underground gas pipes made of plastic?

1. Dig until located

2. Look at city blueprints

3. Look for excavated earth

4. Contact the underground service alert

The correct answer is: Contact the underground service alert

The most effective method for a contractor to locate underground gas pipes made of plastic is to contact the underground service alert. This service is specifically designed to provide information about the locations of buried utilities, including gas pipes, prior to any excavation. When a contractor contacts the underground service alert, the utility companies are notified and can mark the locations of their underground lines to prevent any accidents during digging. This is a crucial safety step, as it helps to avoid damaging utilities, which could potentially lead to hazardous situations, fines, or legal issues. While looking at city blueprints might provide some information, these documents can be outdated or inaccurate depending on recent construction or changes. Relying solely on excavated earth or physically digging until finding the pipes poses significant risks and is not considered a safe or reliable practice. Therefore, utilizing the underground service alert not only ensures compliance with safety regulations but also protects both the contractor and the public.