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<br />e <br /> <br />e <br /> <br />Mr. Dan Pearson <br />February 8, 1996 <br />Page 2 <br /> <br />The second waste stream DuPont we wish to add to Permit Facilities 11.2, 3, and 11 Is from <br />our lab. It consists of primarily methanol and acetone (F003s), which are used as solvents <br />for cleaning lab equipment and water. A typical composition and waste characterization <br />form Is attached (ATTACHMENT VII). The site proposes to add this stream to our permit as <br />ww. There are no Appendix VIII compounds in this waste stream above 1%. The <br />compounds that are there are below ODCB on the Thermal Stability Index. Like the first <br />modification, this would be a Class II modification under TAC 305.69; Appendix I, L. 6. b. <br />regarding "Burning different wastes". The estimated 2400 gallons per year this waste <br />represents will be less than 0.05% of the waste treated in Permit Facility 11. <br /> <br />The third modification is only a follow-up to a Class I Modification submitted last year <br />(ATTACHMENT-III) to add newly listed streams to permitted facilities 2, 3 and 11. The Class <br />modification is required under the listing. <br /> <br />A modified permit including all of DuPont's 'requested changes is included in <br />ATTACHMENT VII. <br /> <br />A copy of a revised permit signature page Is also enclosed with this letter, as well as part I <br />of our Hazardous Waste Part B Permit Application (ATTACHMENT I). <br /> <br />If there are any questions, or if I can be of assistance, please contact me at (713) 470-3027. <br /> <br />Sincerely, <br /> <br />.~7.~~. <br /> <br />Russell K. Barger <br />Environmental Coordinator <br /> <br />ATTACHMENTS <br />