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Re: Merry X-Mas: Guess the location

Posted by WillD on Wed Dec 26 02:28:20 2007, in response to Re: Merry X-Mas: Guess the location, posted by Broadway Lion on Tue Dec 25 12:34:28 2007.

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The standard as the APWA has set down is:
White: Proposed Excavation
Pink: Temporary Survey Markings
Red: Electrical and Lighting lines, cables, and conduits
Yellow: Gas, Oil, Steam, Petrolium, or Gaseous Materials
Orange: Communications, alarm or signal lines cables or conduits
Blue: Potable Water
Brown: Reclaimed water, irrigation, and slurry lines
Green: Sewage and drain lines
This can be found on page 7 of this PDF. It's by no means a hard and fast regulation. It's not uncommon to see survey markers in white, orange, or green, but red, yellow, and blue should be pretty sacrosanct because of the potential hazard in striking a gas, power, or water line. The yellow flags around a fiber optic installation don't neccesarily mark out the fiber optic line, but rather are placed in advance so the crew laying the wire doesn't dig right into a natural gas line.

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