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Stacy Rivera [EH] From: Tripp Heller <tripp.heller@redfoxresources.com> Sent: Wednesday, November 18, 201S 11:05 AM To: Lance Nunn Cc: Stacy Rivera [EH]; Brad Edgar;Juston Smithers; Mike Hofer;Yvette Baca Subject: Re: FW: DPF's Attachments: Zinc in DPF Calculations.pdf Lance, Stacy et al., FET-EA Attached is a presentation outlining the analysis of the potential hazardous waste content within the Diesel Particulate Filters themselves (not solely the residual ash material that accumulates after cleaning). This analysis should provide sufficient empirical evidence as to why the zinc content in Diesel Particulate Filters do not cross the threshold that would trigger them to be treated as hazardous waste. As indicated in the analysis, the maximum level of zinc in a DPF is 8 times below the limit for Non-RCRA hazardous waste. We would be happy to respond to any follow up questions on this matter. Regards. Tripp On Fri,Nov 13, 2015 at 1:13 PM, Tripp Heller<tripD.heller ,redfoxresources.co > wrote: Thanks for the update Lance. We will prepare a written summary of why our study has found the emission systems themselves would not be classified as hazardous waste (only the residual ash from cleaning practices) and will share with Stacy and the group. We would be happy to schedule a follow up meeting with all interested parties, if need be, but our written summary will likely bring clarification to the question. Thanks Tripp RI E _ Tripp Heller General Manager Red Fox Resources 1001 42nd Street, Suite 200 Oakland, CA 94608 m:415-793-3439 f: 510.338.3243 tripp.heller@RedFoxResources.com On Fri,Nov 13, 2015 at 9:10 AM, Lance Nunn<lanunnglkgcorp.com>wrote: Good morning Tripp, I talked to Stacy who is our County inspector, she said that after reading the report she still has a few questions, mainly that from what she can see there is no proof in the report that the filter off the 1