Dear Project Manager,
Do not blame my office because you put the cart before the horse. Just because you have document B scheduled to be signed prior to document A (which I'm responsible for). NOW you figured out there's a two month disparity - is NOT my office's responsibility. I don't appreciate you citing my office for the reason the schedule is blown.

And now thanks to you, I get to do a major rewrite because the project description and construction schedule is rearranged, as well as all the environmental coordination.

In the future, plot the date you want to go to construction, and work back to when all the stars need to be aligned and allow for alignment time than trust a scheduling program which results in document B signed prior to document A.

Bless your heart.