In order to receive the free compost, you have to participate in the city curbside recycling program (a misnomer in some respects, but that is what the city calls it.) Take a copy of your water bill showing the $3 recycling charge. You can receive one pickup load or one 4 x 8 trailer load. You must have a cover for the load.
It's too bad it is the same day as the Water Symposium; a lot of the same people who will be interested picking up compost will be at the Symposium--like me. But for those who can participate, this is a good deal and a suitable reward for participating in the composting program.