If you work “inside the fence,” which is code for construction projects for a governing body or military base, you’re subject to high-spec standards — called Engineers Manual (EM) 385 — a nearly 900-page document issued by the United States Army Corp of Engineers (USACE) that provides guidelines on everything from indoor air quality management to waste disposal. However, these are not recommendations, but strict guidelines that must be followed on any and all government-sponsored projects.