567—122.21 (455B,455D) CRT recycling facilities that shred CRTs. CRT fluff from the shredding of discarded CRTs shall be sampled quarterly, at a minimum, and analyzed according to Test Methods for Evaluation of Solid Waste, Physical-Chemical Methods SW 846, U.S. EPA, Third Edition 1986, or other method approved by the department, for the presence of PCBs. CRT fluff from the shredding of discarded CRTs shall be sampled quarterly at a minimum and analyzed for metals according to the toxicity characteristic leaching procedure (TCLP, EPA Method 1311). The fluff shall be sampled once per day for seven consecutive working days to make a composite sample. If the total PCB amount is less than 50 parts per million (ppm) and if the TCLP results demonstrate the CRT fluff is not hazardous, then the CRT fluff may be disposed of in a municipal solid waste (MSW) sanitary landfill in Iowa.