In my new position I do work for a major utility company. As a part of one of our projects we are doing a number of installations around the area that involve unearthing buried pipelines. I have never done pipeline work in an urban area so I didn't know what it would entail as far as permitting. One of the major things that we have to do is develop a traffic plan (i.e. how will traffic flow when we rip up the street), but before we can do that we have to figure out where we are going to work. We have an approximate idea, but often times there are so many other buried things in the area that it pays to do some additional backchecking. For example, I have a situation where we might have to shut down part of an intersection (not a major one), but we also might able to do the work in the shoulder. We need to get a better feel of where our line is and as it turns out where other buried things (fiber optic, sewage lines, water lines, electricity, jet fuel, etc.) are located. It turns out in order to figure out where other things are you call a service "USA". They are a consolidator that keeps track of who has underground things in what area. So after you call them they tell their subscriber list that you are going to dig in that area. You've seen the 'call before you dig' signs? Well those call USA. After the call you mark your digging area and then the various other companies send representatives to mark their lines or whatever is underground. So now we are at the point of this post. I've always walked around urban areas and seen spray painted markings on the ground. They are in different colors and almost always have the tag "USA". I figured they had to do with underground things, but I couldn't figure out the purpose. They are the markings of other companies notifying people where their stuff is. White paint is the proposed excavation, yellow is gas/oil/steam/chemical, green is sewer, blue is water, red is electric, and orange is cable. So now I find myself driving around looking for markings on the ground to see what is going on. And thus I have unraveled the 'secret' code of underground excavation.
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15 years ago