This site runs along the mainline, from Twyford Avenue Bridge to Horn Lane, behind West Acton Primary School and houses/allotments/ field on the south side of Noel Road. Its proximity to houses in this otherwise residential area, is very clear as visible on map satellite views at google maps and other map sites.
Pollution on Horn Lane has been one of the worst in London for years. The site must already contribute significantly to this pollution.
The new proposal is for the delivery and processing of 300,000 tons per year of waste – presumably arriving and leaving by truck and/or train.
For details of the proposal see (the consultation has now closed):