Jeff Frederick places a marker above the sewer drain.    

One of the signs placed on Alexandria sewers. 

Jessica Rozek secures a sign to a sewer. 

Several WEF staff finish up placing markers. 

Another sewer marker. 

Jessica Rozek seals one of the signs. 

Brittany Burch works carefully around a parked car. 

Lorien Walsh places a marker outside of King Street metro station. 

Laura Leslie helps finish up a second day of sewer marking.