Pg 34.
sum of cardboard water, litter, plastic waste recycled.
Assume intert mixed waste (http://www.wasteauthority.wa.gov.au/media/files/documents/GN6VoltoTonnes.pdf) conversion rate 1.3
73 tons cardboard = 63.502931800000006 metric tonnes
30 tons plastic = 27.2155422 metric tonnes
63.502+27.215 = 90.72 metric tonnes
80701 cubic metres Litter cannot be converted into metric tonnes. Additionally, Litter is not included in their calculation of total waste generated, so looking only at plastic and cardboard fits better to their measurement of waste.