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is determined that a sample is too light it may be increased by removing or adding more material. It is important to add or remove all material in the slice from the top to bottom, to ensure that both small, heavy, and loose materials and large, light, and bagged materials are added or removed. Samples can be queued and stored on tarps until sorted but samples must be prevented from mixing with each other and with other material on the tipping floor. The sampling crew manager will place a unique sample placard on each sample for a photograph and, if the sample is not immediately sorted, for later identification. The placard is marked with a unique sample identification numberand additional information (such as the date) used to identify loads in photographs and correlate load net weights with sample details. Each placard will be coded according to its corresponding sampling population (e.g., 'RSS-1' indicates the first load of Residential single-stream recycling). Each load will be photographed individually with the sample placard visible and legible. Figure 1: Sixteen (16) cell grid ____________A.___________ I I I I I I I I I 4 _-..- ---_-..---r-..-/-..~t:::.----- --- : ~-,,- I . I ~ ~-,- j....-" --..... ..... ,,- . -..... 41"'" ~ _~r~- I -" I . I ..~ 8 _......-,..,,- -.. ----~~~~~~~~~-------- --,- 6............,,--- ---::::,,~~:_-------- r"~ ..- .. -,-.."..... ,-,- 3 I I I I I I ".-.- 1.....-- ",r-r ",.-,- : I I I I I 5 . I . I : ..,.....",,- "...-...- .. ~ I " . I . I I ,-."......- ."........--- 13 1 11 9 10 Sample sorting The sample idenfication number, as designated by the placard, will be recorded on the tally form (see Appendix 2 for an example of this form.) The sample will be moved into the designated sorting area. Next, the sampling crew will sort the Contamination materials, as defined in Appendix 1, out of the load and into sort containers. The sampling crew will then weigh the Contamination materials while the sampling crew manager records the weights on the tally form. The remainder of the load-all acceptable items-will be put into containers, weighed, and recorded on the tally form. The sampling crew manager is responsible for monitoring the homogeneity of material in each container and ensuring the accuracy of the sorting process. At the end of each sampling day the sampling crew will comply with any tipping floor staff directions regarding cleaning the designated sampling and sorting area and storing sampling and sorting supplies. Facility Agreement, Attachment 2E Contamination Measurement Methodology Page 6 of 15