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Published: SB 343 Material Characterization Study Final Findings – 2023/2024
Released April 4, 2025
Public Resources Code (PRC) Section 42355.51(d)(1)(B)(i) requires the Department of Resources Recycling and Recovery (CalRecycle) to conduct and publish a characterization study of material types and forms that are collected, sorted, sold, or transferred by solid waste facilities. Pursuant to PRC Section 42355.51(d)(1)(B)(v) CalRecycle published the SB 343 Material Characterization Study Final Findings Report - 2023/2024 (DRRR-2025-1750) on April 4, 2025. SB 343 neither authorizes nor directs CalRecycle to determine or report on the recyclability of particular products and packaging or the appropriate use of the chasing arrows or other indicators of recyclability. Parties evaluating whether a product is eligible to be labeled recyclable in California may utilize additional information not presented in this study. See more information on CalRecycle’s SB 343 webpage.
The final 2023/2024 study findings provide information on whether a product or package is commonly recyclable in California for the purposes of PRC section 42355.51. The findings of this study reflect updated text to reflect counties served, amended results based on counties served, Basel Convention parameters and application to SB 343 criteria, along with additional data tables and clarifications in response to public comments. Additionally, the appendices of the report includes published comments and letters received from interested parties based on the SB 343 Material Characterization Study Preliminary Findings Report (DRRR-2023-1728, December 2023) and the SB 343 Material Characterization Study Revised Preliminary Findings Report (DRRR-2024-1746, December 2024).
Records related to this report, such as R statistical program scripts, can be requested through a California Public Records Act request. Requests may be initiated through the CalRecycle Public Records Portal.
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CalRecycle Material Characterization Study Team
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