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Attachment E-1 Contamination Measurement Methodology: Single Loads • Sample sorting • Sample disposal • Data management Contractor or its representative shall have the right to be present at, observe, and photograph and video all aspects of the sampling process, including without limitation each of the steps listed above or described below. Contractor shall not be responsible for any of the costs incurred in implementing the sampling process and procedures described in this Attachment E-1, other than costs incurred by Contractor in exercising its observation rights set forth in the preceding paragraph. These steps are described in more detail following the definitions of roles. Each step is the responsibility of a specific person or group of people as follows: • sampling crew manager—responsible for selecting samples, working with Operator and the sampling crew, quality control, and compliance with Facility regulations. sampling crew—responsible for sorting samples. • facility manager—responsible for coordinating with the sampling crew manager. tipping floor staff—responsible for identifying loads potentially contaminated beyond the acceptable threshold, creating a designated sampling and sorting area, and ensuring segregation of selected loads in that area. • loader operator(s)—responsible for segregating the selected load from other loads in the designated sampling and sorting area. Safety training and staff coordination When the sampling crew manager and the sampling crew arrive at the Designated Transfer and Processing Facility they will participate in any required safety training and put on all required personal protective equipment (see the equipment list shown in Appendix 3). The sampling crew manager will also walk through the process of extracting samples from the designated load with both the loader operator(s) and the tipping floor staff. Sampling and sorting area designation With the input of the tipping floor staff and the loader operator(s), the sampling crew manager and sampling crew will set up in the designated sampling and sorting area near the tipping floor. The sorting area should be in a location near the load to be sampled and from which the loader can safely remove samples after sorting. Sample selection Five (5) cells will be randomly selected for sampling using a random number generator for all material streams except commercial organics. Fifteen (15) cells will be selected for the commercial organics material stream. The sampling crew manager will assist the loader operator in locating the appropriate cell for each sample using the sample cell map in Figure 1 below. Collection Services Franchise Agreement with Recology San Mateo County City of Redwood City ATIREM433t12121B8U54/Recology of San Mateo Attachment E-1 Contamination Measurement Methodology Page 3 of 14