... equipment such as sewage, water, gas, and oil lines, compressed air, vacuum, and acid systems, water closets ... construction or remodels Install natural gas systems, and med gas systems (vacuum, O2, Medical Air ...

... utility, supply, and disposal systems, fixtures, fittings, and equipment such as sewage, water, gas, and ... ) and acid waste during new construction or remodels Install natural gas systems, and med ...