Residual Risk and Technology Review for National Emission Standards for Hazardous Air Pollutants for Ethylene Production

Dear Mr. Bouchard: Please find, attached, the Center for Biological Diversity's comments to the Proposed National Emission Standards for Hazardous Air Pollutants: Generic Maximum Achievable Control Technology Standards Residual Risk and Technology Review for Ethylene Production, Docket ID No. EPA-HQ-OAR-2017-0357. References cited to therein will be provided on a flash-drive via USPS Priority Mail. Respectfully, Lauren Packard Staff Attorney Center for Biological Diversity

REFERENCES: 1 of 6. Dear Mr. Bouchard: Please find, attached, references cited to in the Center for Biological Diversity's comments to the Proposed National Emission Standards for Hazardous Air Pollutants: Generic Maximum Achievable Control Technology Standards Residual Risk and Technology Review for Ethylene Production, Docket ID No. EPA-HQ-OAR-2017-0357. Please note that many references cited to in these comments exceed the 10 MB limit for regulations.gov and could not be submitted via this portal. References cited to therein will be provided on a flash-drive via USPS Priority Mail. Respectfully, Lauren Packard Staff Attorney Center for Biological Diversity

REFERENCES: 2 of 6 Dear Mr. Bouchard: Please find, attached, references cited to in the Center for Biological Diversity's comments to the Proposed National Emission Standards for Hazardous Air Pollutants: Generic Maximum Achievable Control Technology Standards Residual Risk and Technology Review for Ethylene Production, Docket ID No. EPA-HQ-OAR-2017-0357. Please note that many references cited to in these comments exceed the 10.5 MB limit for regulations.gov and could not be submitted via this portal. References cited to therein will be provided on a flash-drive via USPS Priority Mail. Respectfully, Lauren Packard Staff Attorney Center for Biological Diversity

REFERENCES: 3 of 6 Dear Mr. Bouchard: Please find, attached, references cited to in the Center for Biological Diversity's comments to the Proposed National Emission Standards for Hazardous Air Pollutants: Generic Maximum Achievable Control Technology Standards Residual Risk and Technology Review for Ethylene Production, Docket ID No. EPA-HQ-OAR-2017-0357. Please note that many references cited to in these comments exceed the 10.5 MB limit for regulations.gov and could not be submitted via this portal. References cited to therein will be provided on a flash-drive via USPS Priority Mail. Respectfully, Lauren Packard Staff Attorney Center for Biological Diversity

REFERENCES: 4 of 6 Dear Mr. Bouchard: Please find, attached, references cited to in the Center for Biological Diversity's comments to the Proposed National Emission Standards for Hazardous Air Pollutants: Generic Maximum Achievable Control Technology Standards Residual Risk and Technology Review for Ethylene Production, Docket ID No. EPA-HQ-OAR-2017-0357. Please note that many references cited to in these comments exceed the 10.5 MB limit for regulations.gov and could not be submitted via this portal. References cited to therein will be provided on a flash-drive via USPS Priority Mail. Respectfully, Lauren Packard Staff Attorney Center for Biological Diversity

REFERENCES: 5 of 6 Dear Mr. Bouchard: Please find, attached, references cited to in the Center for Biological Diversity's comments to the Proposed National Emission Standards for Hazardous Air Pollutants: Generic Maximum Achievable Control Technology Standards Residual Risk and Technology Review for Ethylene Production, Docket ID No. EPA-HQ-OAR-2017-0357. Please note that many references cited to in these comments exceed the 10.5 MB limit for regulations.gov and could not be submitted via this portal. References cited to therein will be provided on a flash-drive via USPS Priority Mail. Respectfully, Lauren Packard Staff Attorney Center for Biological Diversity

REFERENCES: 6 of 6 Dear Mr. Bouchard: Please find, attached, references cited to in the Center for Biological Diversity's comments to the Proposed National Emission Standards for Hazardous Air Pollutants: Generic Maximum Achievable Control Technology Standards Residual Risk and Technology Review for Ethylene Production, Docket ID No. EPA-HQ-OAR-2017-0357. Please note that many references cited to in these comments exceed the 10.5 MB limit for regulations.gov and could not be submitted via this portal. References cited to therein will be provided on a flash-drive via USPS Priority Mail. Respectfully, Lauren Packard Staff Attorney Center for Biological Diversity

Please find, attached, comments from The Center for Biological Diversity. Respectfully, Lauren Packard