Agmt10 Recology San Mateo County

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• • The error ranges shown above shall be interpreted as follows. When the calculation method described below provides the Measured Contamination Level in a material stream, the estimate will be expressed in terms of percent by weight of the entire material stream. The error range around the estimate reflects a percent by weight of the entire material stream. Thus, if the Measured Contamination Level in a given material stream is five percent (5 %), plus or minus one percent (1 %), then ninety percent (90 %) confidence that the Contamination Level is between four percent (4 %) and six percent (6 %) of the total material stream is achieved. The Parties agree that the actual Measured Contamination Level will be the sole determinant of the percentage of Contamination in a Toad, and of Contractor's compliance with the maximum contamination levels. It is expected that a two (2) person crew can collect, sort, and weigh approximately twelve (12) samples in an eight (8) to ten (10) hour period, assuming a constant supply of samples is available. Therefore, two (2) sorters working approximately five (5) days per quarter will collect and sort the desired number of samples to assess all five (5) material streams, assuming there are enough inbound loads during that time period to provide the desired number of samples. To capture seasonal variations, sampling events will be conducted during each of the the four (4) calendar quarters. In addition, sampling events will not be scheduled five (5) days immediately before or after Holidays. If the Measured Contamination Level for a material stream calculated for one (1) calendar quarter varies by twenty five percent (25 %) or more from the Measured Contamination Level calculated for the immediately preceding calendar quarter, Contractor may require the SBWMA to increase the number of samples to be taken in the following quarter (up to twenty four (24) samples) at Contractor's expense. The result of the increased sampling will be used together with the regularly scheduled sampling to establish the Measured Contamination Level for the material stream for that quarter. 4. Field Procedures The field procedures are described in the following nine (9) steps, and shall be followed by the applicable party: Contractor, Operator, SBWMA, or a third party designated by the SBWMA. • Advanced preparation for regularly scheduled testing • Arrival at Facility for regularly scheduled testing • Scale house coordination • Tipping floor coordination • Load selection • Sample collection • Sample sorting • Sample disposal • Data management Franchise Agreement for Collection Services with Recology San Mateo County Attachment E -2 Redwood City Page 3 of 19