Address Signs are available for purchase for $20. Click Address Signs for the order form. The signs come in two colors and are metal coated with reflective paint so they can be easily seen at night, in fog or when there is smoke. The blue placard should be ordered if the fire department can hook up and use your well or holding tank. The green is for properties that have no wells or holding tanks. The fire department has recommended that you place the address placard on a stone or metal holder to keep it in place during a fire event. If you are applying for a SDGE Powerlink grant it is required that you have this placard to mark your property entrance.