Why has the Lincoln Memorial's Reflecting Pool developed such visible problems?

The Lincoln Memorial's Reflecting Pool, recently renovated at a cost of over $15 million, is experiencing visible issues including green algae growth and peeling blue coating. Experts attribute the problems to a rushed project lacking proper design and environmental expertise, with no-bid contracts awarded to expedite completion before the July 4 holiday. Federal officials and the White House have denied involvement in the contracting process.