my name is carolyn chu, and i'm the project manager for the biosolids digesters facilities project. i'm here before you today to request award of this professional services contract, pro 0068 construction management staff augmentation services to the arcadeis team who will be providing support to our construction manager staff in support of the biosolids project. i'm also here to request authorization for our general manager to negotiate and execute this agreement with or arca arcad arcadis in an amount not to exceed 42 million and for a period of time not to exceed seven years. so you might request back in march at the same podium, you approved the current project with the ceqa findings, so with this contract today, you will be able to bring on the last members of the project team who will help us construct the project at the southeast plant. so thank you, and at this time i can answer any of your questions. >> thank you. commissioners, questions? >> how do we come up with the figure of $42 million? >> well, basically, we have a puc construction manager resident engineer, and obvio