Campaigners told Leeds City Council tomorrow to scrap plans for an incinerator.
The council intends to give planning permission for an incinerator which will burn 164,000 tonnes of domestic and industrial waste every year.
It will run for 25 years. The deadline for objections is tomorrow.
No Incinerator Leeds, the local campaign group, is backed by Leeds Friends of the Earth.
It said: "Close to the city centre in the Cross Green area, the incinerator will produce thousands of tonnes of hazardous waste and spew pollutants into the air 24 hours a day."
Objections include fear of subsidence from old mine shafts and that it might put off further development in the area.
As well as the health hazards, it will be run by French multinational Veolia, which provides services to illegal Israeli settlements in Palestine.
Fire Minister Brandon Lewis probably had a fair idea what Sir Ken Knight would deliver when he asked him to conduct an "independent" report into fire and rescue services in England.