May 15,2014 UNITED STATES ENVIRONMENTAL PROTECTION AGENCY RESEARCH TRIANGLE PARK, NC 27711

Ms. Beth Hudson, Site Manager Wacker Chemical Corporation PO Box 1495 Calvert City, Kentucky 42029 Dear Ms. Hudson: OFFICE OF AIR QUALITY PLANNING AND STANDARDS

Pursuantto section 114 ofthe Clean Air Act (CAA), the U.S. Environmental ProtectionAgency (FPA) is r.ollP.r.tirrg**i11_form;=~tiorr** to**r.h;=~r;=~f'.t"-'rize h;=~z;=~rdo~!s** **;=~ir poll~1tRrrt**  "-'missions from prof'ess vents atpolyvinyl chloride and copolymer (PVC) production facilities. PVC production is subject to the provisions of40 CFR Part 63, Subparts HHHHHHH and DDDDDD. The purpose ofthis request is to gather process vent data, stripped resin data, process wastewater data and other information necessary to inform our reconsideration ofthese emissions standards. We request the following testing be performed for your PVC production facility, Wacker Chemical Corporation- Calvert City, KY in conjunction with Westlake Chemical CorporationCalvert City, KY, as specifically listed below and discussed in Attachment B (tables 1.1 and 1.6) ofEnclosure 1to this letter:

Pollutants to be tested HCl 

# ITOHAP 

# IDioxin 

# IVinyl Chloride

Testresults that are collectedusing test methods that are supported by EPA's Electronic Reporting Tool (ERT) must be submitted using the ERT. We are also providing PVC process ventresponse forms inMicrosoft® Excel spreadsheet format for test methods that are not supported by the ERT. Please see Enclosure 1, Attachment B for specific ERT submission instructions. The requested testing is designed to collect information on emissions and other relevant aspects ofPVC process vents. Enclosure 1 contains a summary ofthe information we are requesting.

Internet Address (URL) • http://www.epa.gov Recycled/Recyclable • Prinled wnh Vegetable 011 Based Inks on Recycled Paper (Minimum 25% Postconsumer)Supplemental information is contained in the following enclosures: Description Enclosure# Maximum Achievable Control Technology Enclosure 1 (MACT) Standards Development Information Collection Request Section 114 Authority and CBI claims Enclosure 2 CBI emissions data disclosure Enclosure 3 Designation ofERG as authorized representative Enclosure 4 Policies and Procedures for handling CBI Enclosure 5 Certification Statement Enclosure 6 2014 PVC 114 Process Vent Testing Workbook N/A 2014 PVC 114 Process Vent Testing Workbook NIA Example

Please e-mail the completed non-confidential survey response to: CCG-PVC@epa.gov The testing request is designed to collect emissions information, which by law cannot be confidential information. You are required to return all requested information on or before November 17,2014. Ifyou would like to use the required Section 114 testing to satisfy the initial compliance requirements for process vents in the PVC rules (40 CFRpart 63 , subparts DDDDDD and HHHHHHH), please contact Region 4 to discuss the requirements prior to beginning the 114 testing. Be aware that there are significantpenalties for submitting false information, including the possibility offines and imprisonment as explained in Section 113 ofthe Clean Air Act (42 USC §7413). Failure to comply fully with this request for information may subject you to an enforcement action. We may use any information submitted in response to this request in an administrative, civil, or criminal action. · Ifyou have questions regarding this request, please contact Ms. Jodi Howard, Refining and Chemicals Group, at (919) 541-4607 or howard.jodi@epa.gov.

### Thankyoufor your assistance inthis effort.

6 Enclosures Sincerely,

# l?~t.?**~~** Group Leader Refining and Chemicals Group Sector Policies and Programs Division

cc: Chris Farley, Wacker Chemical Company, (electronically) w/Enclosures Kevin Bloomer, Westlake Chemical Corporation, no enclosures R verly R::mister) USRPA, Region 4: Air Djvision**Director ~**  w/Rnclosnrc 1 onJy 

### Robbin Edwards, KY**Natur~** 

### Resources and Environmental Protection, Division ofAir Quality, w/Enclosure 1 only