Specifically, the one item I'll call out here is support and the political capital that he invested to have the Brightwater Sewage Treatment. Plant constructed--before we ran out of capacity in the Central Puget Sound. If he had not been the champion for its construction all the new development, jobs and commerce that has come to the Seattle region would not have happened because the two existing plants were at or near capacity.
$1.8B projects are not popular items to propose and see through to being funded. Construction and implementation was not accomplished until after his term in office. Thus, he invested in providing a future need at some political cost to him personally.
We need more of this behavior in our elected and senior appointed officials. We have to get out of the "fix on failure" approach we have to critical infrastructure. Be a Ron Sims and make a difference for future generations. Care more about the future than your own personal political career.