Gee, sandgropers love to whinge! They're storage tracks for christ sake, not a mainline.
Probably more likely they are FIFO blow ins from the east who are able to afford to live there.
Anyway lets really take a look at what the NIMBY's are complaining about.
Currently they do live on a mainline section with what is really a shunting neck just outside their door. From 4am onwards till 1am at night, Trains accelerate away with the usual traction motor noise, Returns come off the Bridge usually in Dynamic braking mode on the approach to Claisebrook which combined with the flange on curve noise is probably annoying enough throughout the day.
In the Yard - The River Dead End shunt neck sees a small amount of traffic after the morning peak period with cars coming off traffic for storage or servicing.
After the evening peak period virtually every set of cars traverses the shunt neck up till about 10pm to access the Wash & cleaning ramps both in and out before storage for the night, with only the remaining late night sets left after 1am - sometimes the heavy incoming traffic is till after midnight depending on the Night ie Fri or Sat and what event services are being provided.
After the cars are cleaned the traffic stops and all goes quiet as nothing is stored at the River end.
The future for the E/Pth NIMBY sees not only the usual traversing of the dead end but also cars being stored overnight outside their door. This means air compressors running (some of which are not quiet), Air pressure release valves dumping air all night, sometimes fault buzzers going off.
As crews arrive and prep cars from 3.45am - Doors opening closing banging, Chatter , Fault buzzers and Indicators being tested, Lights, Horns, Door gongs and PA systems tested, CB Radios in use, Occasional banging together or splitting of cars, Points being pulled across and then the cars departing and squealing through curves etc. Of course due to the location there will no doubt be some serious Lighting of the Area for security purposes.
Electric trains are probably for most people considered generally Quiet, but they can also be noisy when doing nothing in a quiet space
There is quite a bit of noise that comes from Cars being stored and its not surprising the Nimby's of E/Pth are making a stand.
It is also possible that this area may become an entry and exit point to the Yard from the Armadale main further into the future - particularly with Mr Barnett wasting our $$$$ on the other side of the river - The SOD has now turned the SOD!
Of course at the end of the day - it is the usual story of residents who move in and then complain about the noise that has been there forever. Cant blame them as the noise for these people is going to increase, but it is the choice they made to live next to a railway.
Im sure if it was you living there you would also be complaining - its what Human Beings do!