At 16:15 PDT, a Cessna 150H nosed over during a precautionary landing when the engine began running roughly near El Monte. The pilot sustained minor injuries. The purpose of the flight was to conduct banner towing near the Los Angeles Coliseum. The pilot said he departed Chino and was flying west toward the tow area when he began to have engine problems. The problem got worse and the pilot selected a landing site at the landfill because it was the only site he felt would keep him away from populated areas. He landed successfully and hit a ditch while taxing the airplane, which caused it to nose over.