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• • <br /> ATTACHMENT E -2 <br /> Contamination Measurement Methodology: Quarterly Protocol <br /> This Attachment presents the methodology for quantifying the Contamination Level in <br /> five (5) distinct materials streams Collected by Contractor from the SBWMA Service <br /> Area. <br /> This Attachment is organized into the following six (6) sections: <br /> 1. Objectives — describes the purpose of the methodology. <br /> 2. Sampling rationale — presents key sample groupings for the methodology, based <br /> on the Agency and material stream. <br /> 3. Sampling allocation and calendar— describes the number of samples required <br /> to provide a sufficient level of accuracy in findings and outlines a schedule that <br /> provides representative and sufficient data to meet quarterly and annual <br /> sampling goals. <br /> 4. Field procedures— describes sampling activities for each sorting day. <br /> 5. Sorting categories— describes the sorting categories. <br /> 6. Calculations <br /> Appendices 1 through 3 consist of: <br /> 1. methodology checklist <br /> 2. sample data collection forms <br /> 3. equipment list <br /> 1. Objectives <br /> This methodology is designed to estimate the Contamination Level (as a percentage by <br /> weight of the entire Toad) in an individual Toad from any of the five (5) materials streams <br /> Collected in the SBWMA Service Area as follows: <br /> • Commercial Source - Separated and Targeted Recyclable Materials <br /> • Commercial Organic Materials <br /> • Commercial Plant Materials <br /> • Single - Family Targeted Recyclable Materials <br /> • Single - Family Organic Materials <br /> The methodology described herein is also intended to produce consistent and <br /> statistically reliable estimates of the Contamination Level for each material stream as a <br /> whole. In addition, the methodology is designed to require the minimum necessary <br /> organizational time and financial investment. <br /> Franchise Agreement for Collection Services with Recology San Mateo County Attachment E -2 <br /> Redwood City Page 1 of 19 <br />