This morning I had two good birds at the Tracy sewage treatment plant. One Bank Swallow and one Solitary Sandpiper. Had great scope view of Solitary Sandpiper on the western pond near the entrance to the Honey Cut. A truck coming out of the facility scared the shore birds and despite trying I never refound the Solitary Sandpiper. Other birds included Semi-palmated Plover, Greater Yellowlegs. Willet, Dowitchers, Spotted Sandpiper and Black-crowned Night Heron.