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Bridgestone Retail Operationsq LLC <br />333 E. Lake Street - Bloomingdale, IL. - 60,108 <br />Bridgestone Retail Operations, LLC (BSRO) periodically samples the metal shavings generated by <br />the service of automobile brakes (i.e., grinding) to verify the hazardous characteristics of the <br />waste so that the appropriate method of disposal is employed at BSRO's retail facilities. <br />The attached information provides summaries of analytical data and corresponding laboratory <br />analytical reports from brake grindings collected from four stores in California. Each individual <br />sample was analyzed for Total Threshold Limit Concentration (TTLC), Soluble Threshold Limit <br />Concentration (STLC), Toxicity Characteristic Leaching Procedure (TCLP) and particle size use <br />method ASTM D422/D4464M according to the methods in the California Code of Regulations, <br />Title 22, Chapter 11, and Article 3. <br />Table 1 provides a summary from samples collected on January 18, 2008, from three Firestone <br />Complete Auto Care Centers located in the cities of Santee, San Diego, and Kearney Mesa, <br />California (San Diego County). Table 2 provides a summary from samples collected on February <br />9, 2010, from one Firestone Complete Auto Care Center located at 10407 Folsom Blvd in <br />Rancho Cordova, California (Sacramento County). <br />The analytical data demonstrate that the metal shavings generated during brake grinding from <br />each store passed the TTLC, TCLP and STLC tests and therefore are classified as non -hazardous. <br />Attachments: <br />Table 1. Analytical Results of Brake Shavings from San Diego County, California <br />Table 2. Analytical Results of Brake Shavings from Rancho Cordova, California <br />Analytical Reports — Santee, San Diego, and Kearney Mesa <br />Analytical Reports — Rancho Cordova <br />