C Below has a current three year contract with the City of Corona that began in August of 2009 and has since been renewed. C Below provides Locating and Potholing services to the City of Corona on private property and in the public right of way. Potholing has been done to visually verify the marking of utility lines located by C Below and DigAlert. The public street work has often been conducted at night and most times requires Traffic Control. C Below has worked on many difficult projects for the City of Corona that required us to Pothole locations in the middle of streets with very heavy traffic. This prompted us to develop a Traffic Control plan that was stamped by our in house engineer.