In mid-2017, The Recycling Partnership surveyed its MRF Working Group to identify top contaminants and their impact at the Materials Recovery Facility (MRF) level. In gathering data using a matrix [Appendix 1], the surveyed group members provided detail on Labor; Facility Down Time; Disposal; Equipment Impact; Staff Injury; and Lost Value. Partnership staff were then able to delineate the relative costs of contamination, providing a picture of what makes up the greatest cost centers of a contaminated recycling stream.