If you are trying to make a reservation at the Compost Area or Transfer station and it appears there are no available slots, hopefully this will help.
Reservations are taken in 5 minutes increments and can not be double-booked. The calendar only shows the times that are reserved. It does not display the times that are available. The screenshot below may at first glance appear to be full.
However upon closer inspection you can see that the highlighted times (8:40, 8:45, 8:50, 8:55, 9:25 through 9:55, 10:10, 10:25 and 10:40) are available to reserve. Again, the unreserved times are not on this list. Fill out the form with an available time and you should receive an email confirming your reservation.