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r <br /> LILGem <br /> Technology Development <br /> 4047 39th Ave.S.W. <br /> Seattle,Washington 98116 <br /> 206.932.4541 <br /> jhinkev@geminustd.com <br /> www.geminustd.com <br /> December 1 th 2020 <br /> Emery S. Ojala, S.E. <br /> Principal, Structural Engineering <br /> Coffman Engineers, Inc. <br /> 1101 2nd Ave., Suite 400 <br /> Seattle, WA 98101 <br /> RE: Boeing Building 45-04 Internal Paint VOC Concentration CFD Modeling Written Report <br /> Short Version For Inclusion Into 45-04 Permit Application: "Appendix A" <br /> Boeing Project Contract No. EVE-16-2929 <br /> CEI Project No. 160731 <br /> Mr. Ojala, <br /> Geminus Technology Development, LLC (GTD) is pleased to provide a shortened written <br /> summary of the Computational Fluid Dynamics (CFD) modeling effort to estimate the % of LEL <br /> distributions in the Boeing 45-04 Paint Hangar under various internal configurations and painting <br /> operating conditions. This version is meant to be included as "Appendix A" in the permit <br /> application and is a subset of the full written report submitted separately. <br /> Geminus Technology Development has been pleased to participate in this effort with Coffman <br /> Engineers and if you have any questions regarding this written summary please do not hesitate to <br /> contact me. <br /> Sincerely, <br /> 9,i6 <br /> John B. Hinkey, Ph.D. <br />