Skype, Zoom Conferencing or teleconferencing to chat through things or perhaps digitally recording your verbal answers rather than you having to provide written answers.
The assessor can be emailed knowledge and understanding question answers for them to comment, mark and provide feedback remotely.
Other product evidence can also be sent to the assessor such as EMS systems, policies and procedures, copies of transfer/consignment notes, story boards (e.g. writing the sequence of how waste is to be accepted into the site and how you expect to deal with non-conforming waste or other similar examples, emails showing how you’ve sorted out problems especially in obtaining the Site Permit (if you’ve been involved in this process) or when you’ve sought external help etc. So basically any paper evidence you would be including in your portfolio could be scanned and sent with supporting written descriptions describing what it is, what it’s for and how it relates to you and the assessment criteria.
Using WeTransfer or Dropbox (or even Whatsapp for videos) would facilitate larger file sizes being sent.