On the heels of the annual Great LA River CleanUp comes another large do-gooding river activity tomorrow morning. 2,000 people from Heal the Bay, the NAACP, PAVA and ANAHUAK will be cleaning the Glendale Narrows section of the LA River along with Councilman Eric Garcetti and other neighborhood and organization leaders. "The L.A. River is something we all have in common. Only if all communities work together will we be able to restore and revitalize......