Whenever I first take off for work in the morning, at the very first stop with any kind of momentum, I hear a clank on the left and then one on the right coming from the wheels. It's like a hammer hitting the lower control arm once on each side about a second or less apart. It happens only once on each wheel and only after she sits for a spell. Any thoughts?

I've removed the wheel and poked around and can't see anything out of place or too worn (126k) imo.

Thanks for the help.