2010-05-25_PWETC_AgendaPacket - Laserfiche WebLink

Home

Data Analysis of City of Roseville Recyclable Materials Sampling/Sorting Operations. Health and Safety Plan The Project Team developed a health and safety plan for the City's sorting staff and volunteers. The plan is included in Attachment B-3. a .Alin and on Events The sampling approach used to assess the recyclable materials composition needed to include an adequate number of representative samples to provide statistically meaningful results. In addition, this objective had to be balanced with the City's time, labor, and budget constraints. As a result, three one-week sorting events were scheduled, one (in July) before the pilot collection methods were introduced to residents, and two (in September and October) after the pilot collection methods were initiated. Samples of recyclable materials, weighing at least two hundred pounds each consistent with American Society of Testing and Materials (ASTM) Standards, were randomly selected from the collection vehicles at the end of each collection day. (Details of the sampling procedure are discussed in Attachment B-2.) The number of samples sorted, the total pounds sorted, and the average pounds per sample from each collection method (single stream and dual stream) are shown below in Table 3. Table 3 City of Roseville Number of Samples Sorted Number Number of Average of Dual Total Average Single Total Pounds Stream Pounds Pounds Stream Pounds per Samples Sorted per Sample Samples Sorted Sample Before 22 4,708 214 - - - Pilot During 26 7,105 273 8 2,269 284 Pilot a ollecio Data sheets were completed during the sampling and sorting of the recyclable materials. The tare weight of the container, and the weight of the individual materials plus the tare weight, were recorded on the data sheets by the sort crew supervisor. The data sheets used in the study can be found in Attachment B-4. Bros B-3