This alley runs for two blocks behind the businesses of Washington Boulevard, providing an interesting view of their back door. Urban alleys such as this often exist to route the underground infrastructure that supplies the businesses – its hard to repair a buried pipeline or cable if there is a building on top of it! Look out for different access lids for gas lines, electric lines, sewer lines, water lines, cable, fiber optic, and more. If a dig alert has gone out recently, you will see lots of colored spray paint indicating locations of the lines too. Blue paint is for potable waterlines; yellow is for gas, oil, steam, or petroleum; red is for electrical conduit, cables, and lighting lines; orange is for communication, alarm, and signals; purple is for reclaimed water (such as for irrigation); and green is for sewers. White is generally used by the engineers or contractors about to do the digging to mark the areas of concern with underground service alerts, usually shortened to USA when sprayed on the ground.
Alley, Block One