What does it mean when the underground service alert marks the grounds with GREEN stakes and markings?

When underground service alerts designate the grounds with GREEN stakes and markings, it indicates the presence of reclaimed water, irrigation, and slurry lines. This marking system is an essential aspect of construction and excavation practices, as it helps workers identify and avoid damaging these specific types of underground utilities.

Reclaimed water is treated wastewater used for irrigation and other non-potable purposes, which can be critical for maintaining landscaping and agricultural needs. This indicates the importance of proper marking to prevent contamination or disruption of water supply. Properly identifying these lines upfront helps avoid costly repairs, service interruptions, and environmental concerns during excavation or construction.

The other choices are tied to different utility lines, and thus would be marked with various colors specific to their classifications. Understanding these color codes helps ensure safety on job sites and compliance with regulations concerning underground utilities.