Redundant systems involve anticipating future issues with your building. Do you have mission critical electricity needs, for instance, a hospital? Design a generator into the site.
What issues are raised with generators? Now you must consider a fuel source. An underground storage tank creates compliance issues. More importantly, it creates real problems when they leak. Secondary containment is one answer and should be implemented. (A second physical barrier around the tank which can hold the tanks' volume should it leak.)
Consider installing a radon-type venting system below the slab too. Vapor intrusion is the next step in environmental compliance evolution. The back-up system can be installed for dollars during construction instead of thousands later. And suppose you do spill some fuel after the slab is poured? Wouldn't that be a convenient time for a passive redundant system ready for use?
Rethink each system to anticipate realistic future problems. What part of the solution is practical, yet very cost effective, to install now?
Now, use this skill on the site itself. Silt fencing can be installed with the safety fencing, same posts and trench. Safety fencing around trees can be used for traffic control and defining lay-down space. Traffic control and storage logistics should be managed before the site opens for construction. Use fencing to define flow as well as its primary protection job.
Stormwater detention systems store a valuable commodity, water. Non-potable water has many uses on a job site. Use this source to water freshly installed plants, trees protected on site, dust control, or power washing mud off tires. There are ten thousand other uses, and ultimately, you need to drain those structures. Install a pump with a filter and leave it in the pond.
Rethink the many uses your temporary structures and features can help perform. Don't waste any of them. The design phase tends to be task oriented. Look big picture and synergize your assets.