# Chlorine and Chlorinated Hydrocarbon Data Collection and Analysis Summary

February 2012

U.S. Environmental Protection Agency

Office of Water (4303T) Washington, DC 20460

### 1 This document summarizes the data EPA collected in support of its effluent guidelines rulemaking for the Chlorine and Chlorinated Hydrocarbon (CCH) industry. EPA collected data to identify which CCH manufacturing processes generate dio xin and other toxic chemicals and how the resulting wastewater is treated prior to discharge. CCH comprises the following three manufacturing segments:

• 

### Chlorine manufacturing;

• 

### Chlorinated hydrocarbon manufacturing; and

• 

### Polyvinyl chloride manufacturing.

A ll of the facilities where EPA collected data requested that their data be considered confidential business information (CBI). To protect facility confidentiality, EPA cannot provide site visit or sampling reports in the public docket. In an effort to shar e findings without compromising CBI, EPA is summarizing its data collection in this document :

• 

### Section 1 describes the scope of the CCH industry;

• 

### Section 2 describes the site visit program;

• 

### Section 3 describes the EPA sampling program;

• 

### Section 4 describes the voluntary sampling program (VSP) implemented by some facilities;

• 

### Section 5 describes the dioxin analysis; and

• 

### Section 6 provides a summary.

Appendix A provides a list of the site visits and sampling episodes co nducted during the CCH

data collection. Appendix B presents a list of CCH facilities as of 2006, the start of the rulemaking project.

1. S COPE OF THE 

### CCH M ANUFA CTURING 

### S EGMENTS



### In the 2004 Effluent Guidelines Plan (69 FR 53712), EPA found that, despite existing regulations, significant amounts of dioxin and other toxic pollutants are discharged from facilities manufacturing chlorine (by the chlor

- alkali process), ethylene dichlor ide (EDC), vinyl chloride monomer (VCM), and polyvinyl chloride (PVC). EDC is produced by direct chlorination or oxychlorination, VCM is produced by dehydrochlorination, and PVC by the polymerization of VCM

. EPA identified chlor

- alkali, EDC, VCM, and PVC m anufacturing operations as possible candidates for effluent limitations guidelines and standards (ELG)

revision.

During 2005, EPA identified other manufacturing processes that operate under similar conditions

to the chlor

- alkali, EDC, and VCM processes, and therefore hav e the potential to generate and discharge dioxin . EPA identified this facility group based on common practices

– chlorine

manufacture and use of chlorine in certain chemical manufacturing . EPA decided to ex pand the manufacturing operations considered for revised ELGs to include all chlorine manufacturing including manufacturing by other processes such as Down s Sodium and Uhde

- HCl. EPA also identified additional chlorinated hydrocarbons manufactured by direct chlorination, oxychlorination, dehydrochlor ination, or hydrochlorination. Therefore, EPA expanded the scope

### 2 of the potential ELG revisions to the manufacture of chlorine and chlorinated hydrocarbons and refers to this industry group as the Chlorine and Ch lorinated Hydrocarbon (CCH) manufacturing segments. CCH comprises the following three manufacturing segments:

• 

### Chlorine manufacturing;

• 

### Chlorinated hydrocarbon manufacturing; and

• 

### Polyvinyl chloride manufacturing.

Chlorinated hydrocarbons that are regulated under the Pesticide Chemicals Point Source Category (40 CFR Part 455) or under the Pharmaceuticals Manufacturing Point Source Category (40 CFR 439) are not included in the CCH manufacturing segments.

2. S ITE 

### V ISIT 

### P ROGRAM



### During 2005 and 2006, EPA visited 1 3 CCH facilities covering a range of manufacturing and treatment processes. The purpose of the site visit program was to gather :

1. G eneral information about the si te and manufacturing operations.

2. P rocess

- specific information including wastestreams generated

. 3. I nformation on pollution prevention and wastewater treatment

. 4. I nformation for potential wastewater sampling including facility

- specific health and safety requirements and location of potential sampling points.

EPA selected facilit ies for site visits from information in National Pollutant Discharge Elimination System (NPDES) permits, discharge monitoring reports (DMRs), Clean Water Act Section 308 survey responses conducted during the development of the 2004 Effluent Guidelines Plan, location, and type of manufacturing process. EPA visited sites with a variety of facility characteristics including:

• 

### Production technology (e.g., chlor

- alkali cell type);

• 

### D ioxin

- control technology (e.g., tertiary solids removal treatment );

• 

### Discharge practices;

• 

### Geographi c location;

• 

### Manufacturing processes onsite (i.e., facilities solely operating CCH process lines vs. integrated facilities manufacturing multiple chemicals); and

• 

### Treatment processes (i.e., facilities using current state

- of

- the

- art practice).

EPA documented each of the 13 site visits in a site visit report which provided general background information on the facility, descriptions of all CCH manufacturing processes including diagrams showing all wastestreams generated, a description of wastewat er treatment processes with supporting diagrams, and a list of potential sampling points. EPA delivered drafts of the site visit reports to each facility for review and incorporated any changes requested by the facility to accurately capture the informatio n collected.

### 3 3. EPA S AMPLING 

### P ROGRAM



### EPA conducted sampling at four different facilities as part of the EPA sampling program. The purpose of the EPA sampling program was to:

1. Characterize process wastewater streams to determine where dioxin is formed in

the process

. 2. Determine the concentration and quantity of dioxin generated and discharged.

3. Evaluate treatment technologies that may represent best available technolog y (BAT) treatment for dioxin

.

The majority of CCH facilities employ biological treatment to r emove organics generated in the manufacturing process. Because dioxin is hydrophobic and adheres to solids, removing solids or sludges will likely be effective in removing dioxin from wastewater. CCH facilities may reduce

dioxin in wastewater by removing solids in segregated streams

.

EPA selected the sites for sampling based on the manufacturing processes performed at the site and the treatment technology employed. EPA selected four facilities that would cover the majority of CCH manufacturing processes . Because m any CCH facilities als o manufacture non

CCH chemicals, EPA selected sample locations to capture CCH wastewater prior to commingling with other facility wastewater.

Prior to conducting the sampling episode, EPA developed Sampling Plans for each facility with the following information:

• 

### Detailed d escri ption of the facility’s operations including diagrams with the sampling points;

• 

### Proposed sampling approach including the rationale for selecting the sampling point locations, the analytes included, the number of samples to be collected, the sampling methodology including the quality assurance samples to be collected, and the field and process operating data to be collected;

• 

### Description of the sampling activities including the organization of the tea m of EPA and contractor staff conducting the sampling episodes, a list of sampling preparation and field sampling activities, and contact information for all facility, EPA, and contractor staff.

• 

### List of the sampling shipping procedures; and

• 

### Site

- specific health and safety requirements.

Although EPA’s focus was on collecting data to characterize the generation and treatment of dioxin, EP A also included the following analytes in the first two sampling episodes. EPA

reviewed the results from the initial sam pling episodes to reduce the list of analytes for the

### 4 remaining three episodes based on the pollutants detected in CCH wastewater. The a nalytes flagged with an (*) were not collected during the remaining three sampling episodes.

• 

### Classicals:

— 

### Biochemical ox ygen demand, 5

- day (BOD 5 

### ),

— 

### Chemical oxygen demand (COD),

— 

### Total organic carbon (TOC),

— 

### Total suspended solids (TSS),

— 

### Total dissolved solids (TDS),

— 

### Total Kjeldahl nitrogen (TKN) *

,

— 

### Ammonia as nitrogen *

,

— 

### Nitrate/nitrite as nitrogen *

,

— 

### Total phosphorus *

,

— 

### Sulfate,

— 

### Chloride,

— 

### Alkalinity,

— 

### Hexane extractable material (HEM) *

,

— 

### Silica

- Gel Treated Hexane Extractable Material (SGT

- HEM) *

.

• 

### Metals ;

• 

### Organics:

— 

### Volatile organics, and

— 

### Semivolatile organics; and

• 

### Chlorinated biphenyls congeners (PCBs ); and

• 

### Dioxin and furan congeners (dioxin).

EPA conducted the sa mpling episodes in 2006 and 2007. Each episode collected 24

- hour composite samples over either a two

- day or four

- day period. EPA developed two summary reports for each sampling episode to document the results:

1. Samp ling Episode Report (SER)

– The SER documented the sampling procedures and any deviations from the sampling plan. It includes the operational data collected during the episode and presents the analytical results.

2. Engineering Review

– The engineering revie w presents additional information on the analytical data including a discussion of any data quality issues, a comparison of results to the analytical method minimum level, a discussion of data variability, if applicable, and the calculation of pollutant lo adings using concentration and

flow data.

### 5 4. V OLUNTARY 

### S AMPLING 

### P ROGRAM



### In February 2007, U.S. VCM manufacturers (referred to as the vinyl chloride producers or VCP) proposed a voluntary sampling program to provide EPA with dioxin data from all VCM

manufact uring facilities. The proposed voluntary program included all 13 (consisting of 12 existing and 1 future) U.S. EDC/VCM manufacturing sites. The proposed program focused on vinyl chloride manufacturing sites because of industry knowledge, based primarily o n the Vinyl Institute Dioxin Characterization study, that the oxychlorination process and the thermal oxidation of chlorinated hydrocarbons are potential dioxin sources in the CCH manufacturing

segments. 1



### Under the voluntary program, the VCP proposed to first a nalytically calculate a quantitative

baseline of dioxin surface wastewater discharges from participating VCP sites through a voluntary sampling program (VSP). T he VCP then proposed to achieve , as an initial target,

maximum dioxin mass discharges e quivalent to process wastewater flow multiplied by 0.1 ng/L

I

- TEQ

, on a collective

, 12

- facility basis. For the sum of discharges from the 12 EDC/VCM facilities, the maximum daily discharge was thus proposed to be no more than 42 milligrams of dioxin per d ay (I

- TEQ). 2



### EPA developed a generic sampling plan and site

- specific sampling plans for the VSP which described the locations to be sampled and the sampling methodology. The purpose of the VSP was to characterize process wastewater from CCH manufacturing operations prior to commingling with non

- CCH wastewater. The facilities analyzed samples for dioxin and total suspended solids (TSS) for each sampling point selected. For stand

- alone CCH facilities that do

not operate non

- CCH manufacturing processes, facil ities collected samples from the wastewater

treatment effluent. For integrated facilities where CCH process wastewater is significantly

diluted with other non

- CCH wastewater before treatment, facilities sampled streams representing all CCH processes prior to entering the combined wastewater treatment system . Facilities also collected a sample at their final outfall.

Each facility conducted at least four 24

- hour sam ple composite collections spaced at least one month apart, or as needed to capture all relevant site operating modes. Facilities were to
consider various operating modes in selecting the number and frequency of sampling episodes to capture representative operations. In addition t o the dioxin and TSS analytical results, facilities also provided operational data and sampling log sheets for the sample collection period.

Facilities collected the samples in 2008 and 2009 and provided data to EPA in 2009 and early

2010. EPA developed site

- specific SERs for each facility similar to the SER s developed for the

1 Vinyl Institute. 2002. The Vinyl Institute Dioxin Characterization Program Final Report

. (July 1)

.

2 Because it directly addressed dioxin in wastewater from EDC/VCM facilities, the VCP selected the European

Commission Integrated Pollution Prevention and Control (IPPC) Reference Document on Best Available Techniques (BAT) in the Large Volume Organic Chemical Industry 2 as the basis for the voluntary program. The IPPC document

identifies a BAT maximum concentration of 0.1 nanogram per liter, international toxic equivalent basis (ng I

TEQ/L) for dioxin congeners in treated EDC/VCM wastewater.

### 6 EPA sampling program. All facilities claimed their data as CBI; therefore, these reports are not included in the public docket

.

5. D IOXIN 

### A NALYSIS



### EPA identified the CCH manufacturin g segments as potential wastewater sources of dioxin.

Because dioxin is the toxic pollutant of concern in the CCH manufacturing segments, EPA focused the analysis of the EPA and voluntary sampling data on dioxin. This section provides background on dioxin and describes EPA’s dioxin calculation methodology.

5.1 Dioxin Background

The term “dioxins” refers to a group of compounds that have similar chemical and physical properties and are associated with a common group of toxic responses. Table 1 lists the 17 dioxin and furan congeners that exhibit dioxin

- like toxicity and that are referred to as dioxin. The most widely studied of the congeners listed in Tables 1 is 2 ,3,7,8

- tetrachlorodibenzo

- p

- dioxin (TCDD) which serves as the reference chemical for other compounds that exhibit dioxin

- like toxicity. Table 1 also provides t he toxic equivalency factors (TEFs) and toxic weighting factor (TWFs), which are explained below

. Section 5.2 provides information on EPA’s dioxin calculation

meth odology.

Table 1. Dioxin

- Like CDD and CDF Congeners

CAS

Number Chemical Name Abbreviated Name WHO 1998

Toxic Equivalency Factor (TEF) Toxic Weighting

Factors

CDDs

1746

- 01

- 6 2,3,7,8

- tetrachlorodibenzo

- p

- dioxin 2,3,7,8

- TCDD 1 703,584,000

40321

- 76

- 4 1,2,3,7,8

- pentachlorodibenzo

- p

dioxin 1,2,3,7,8

- PeCDD 1 692,928,000

39227

- 28

- 6 1,2,3,4,7,8

- hexachlorodibenzo

- p

dioxin 1,2,3,4,7,8

- HxCDD 0.1 23,498,240

57653

- 85

- 7 1,2,3,6,7,8

- hexachlorodibenzo

- p

dioxin 1,2,3,6,7,8

- HxCDD 0.1 9,556,480

19408

- 74

- 3 1,2,3,7,8,9

- hexachlorodibenzo

- p

dioxin 1,2,3,7,8,9

- HxCDD 0.1 10,595,840

35822

- 46

- 9 1,2,3,4,6,7,8

- heptachlorodibenzo

- p

dioxin 1,2,3,4,6,7,8

- HpCDD 0.01 411,136

3268

- 87

- 9 1,2,3,4,6,7,8,9

- octachlorodibenzo

- p

dioxin 1,2,3,4,6,7,8,9

- OCDD 0.0001 6,586

CDFs

51207

- 31

- 9 2,3,7,8

- tetrachlorodibenzofuran 2,3,7,8

- TCDF 0.1 43,819,554

57117

- 41

- 6 1,2,3,7,8

- pentachlorodibenzofuran 1,2,3,7,8

- PeCDF 0.05 7,632,640

57117

- 31

- 4 2,3,4,7,8

- pentachlorodibenzofuran 2,3,4,7,8

- PeCDF 0.5 557,312,000

### 7 Table 1. Dioxin

- Like CDD and CDF Congeners

CAS

Number Chemical Name Abbreviated Name WHO 1998

Toxic Equivalency Factor (TEF) Toxic Weighting

Factors

70648

- 26

- 9 1,2,3,4,7,8

- hexachlorodibenzofuran 1,2,3,4,7,8

- HxCDF 0.1 5,760,000

57117

- 44

- 9 1,2,3,6,7,8

- hexachlorodibenzofuran 1,2,3,6,7,8

- HxCDF 0.1 14,109,440

72918

- 21

- 9 1,2,3,7,8,9

- hexachlorodibenzofuran 1,2,3,7,8,9

- HxCDF 0.1 47,308,800

60851

- 34

- 5 2,3,4,6,7,8

- hexachlorodibenzofuran 2,3,4,6,7,8

- HxCDF 0.1 51,204,160

67562

- 39

- 4 1,2,3,4,6,7,8

- heptachlorodibenzofuran 1,2,3,4,6,7,8

- HpCDF 0.01 85,760

55673

- 89

- 7 1,2,3,4,7,8,9

- heptachlorodibenzofuran 1,2,3,4,7,8,9

- HpCDF 0.01 3,033,984

39001

- 02

- 0 1,2,3,4,6,7,8,9

- octachlorodibenzofuran 1,2,3,4,6,7,8,9

- OCDF 0.0001 2,021

Source: Van den Berg, et.al. 1998. Toxic Equivalency Factors (TEFs) for PCBs, PCDDs, PCDFs for Humans and Wildlife . Environmental Health Perspectives. Volume 106, Number 12, December 1998.

U .S. EPA . 2006. Toxic Weighting Factor Development in Support of CWA 304(m) Planning Process, Washington, DC. (June). EPA

- HQ

- OW

- 2004

- 0032

- 1634

.



### Since 1987, EPA has assigned TEFs to dioxin congeners to calculate a toxic equivalency (TEQ) for mixtures of the congeners. TEFs provide a method for evaluating the toxicity of dioxin

congeners compared to the toxicity of TCDD. TEF values are not calculated, but are assigned values determined by a panel of experts that evaluates the available scientific data, taking into account chemical structure, persistence, resistance to metabolism, and uncertainties in herent in scientific literature. TEF values range from 1.0 to 0.0001 with 1.0 representing the toxicity of 2,3,7,8

- TCDD, which is considered the most toxic dioxin congener. TEF values are constantly under review as new toxicity information becomes availabl e. Since EPA’s initial review in 1987,

the North Atlantic Treaty Organization (NATO) in 1989 and the World Health Organization (WHO) in 1994 and in 1998 have released TEF values based on different weighting factors and

the most recent scientific data avail able at the time. Table 1 presents the commonly accepted

1998 WHO TEF values.

TWFs are another approach for measuring the relative toxicity of dioxin to other chemicals

. EPA’s Engineering and Analysis Division (EAD) developed TWFs to use in ELG developmen t programs. The purposes of TWFs are to account for differences in toxicity among pollutants of concern in a given ELG and to provide a means for comparing mass loadings of different pollutants on the basis of their toxic potential. According to EPA’s t To xic Weighting Factor Development in Support of the Clean Water Act 304(m) Planning Process 3



### , TWFs are derived from chronic aquatic life criteria or toxic effect levels and human health criteria or toxic effect levels established for the consumption of fish . In the TWF method for assessing water

- based

3 U .S. EPA. 2006. Toxic Weighting Factor Development in Support of CWA 304(m) Planning Process, Washington,
DC. (June). EPA

- HQ

- OW

- 2 004

- 0032

- 1634.

### 8 effects, the toxicity levels of pollutants are compared to a benchmark value that represents the toxicity level of a specified pollutant. EPA selected copper, a metal commonly detected and

removed from industri al effluent, as the benchmark pollutant. To assign TWF values, EPA/EAD maintains a database of aquatic life and human health toxicity data, as well as physical/chemical property data for more than 1,900 pollutants compiled from over 100 references. TWF val ues are determined based on the toxic aquatic life effects and human health effects values stored in the

database. Table 1 also lists the dioxin TWFs.

EPA’s National Center for Environmental Assessment is currently working on a comprehensive

reassessment of dioxin exposure and human health effects. EPA published the Exposure and Human Health Reassessment of 2,3,7,8

- Tetrachlorodibenzo

- p

- Dioxin (TCDD) and Related Compounds in December 2003. This document is undergoing revisions after review by the

National A cademy of Sciences. In May 2010, EPA released its draft Reanalysis of Key Issues Related to Toxicity and Response to NAS Comments (Reanalysis) for public comment and peer review. On August 29, 2011, EPA announced a plan for moving forward with the dioxin Reanalysis and will release Volume 1 of the Reanalysis in early 2012.

5.2 Dioxin Calculation Methodology

To compare the dioxin concentrations obtained through the EPA and voluntary sampling

programs to the VCP’s proposed limit of 0.1 ng/L TEQ, EPA converted the dioxin concentrations from units of ng/L or pg/L to units of ng TEQ/L. M any of the dioxin concentrations from both sampling programs were below levels of detection or at levels less than the minimum calibration level but greater than the esti mated detection limit (‘J’ flag). EPA followed the methodology below in calculating average dioxin concentrations and total toxic equivalencies (TEQs) for non

- detects.

1. Non

- detect (U

- flag)

– For each congener, identify the number of detected samples

and no n

- detect samples in the data set 4 

### :

a. If at least one sample in the data set is detected, then:

i. If any of the detected samples has a ‘J’ flag, then calculate the

concentrations for the non

- detects as follows:

Conc congener 

### = 0

ii. If none of the detected samples has a ‘J’ flag, then calculate the

concentrations for the non

- detects as follows:

Conc congener 

### = 1⁄2 detection limit

4 A Data Set is either the full set of results from the VSP which consists of four days of sampling at least one month apart or the results from the EPA Sampling episode which consists of either two or four consecutive days of sampling.

### 9 iii. Calculate the concentrations for the detected samples, regardless of flags, as follows:

Conc congener 

### = reported concentr ation

b. If all samples in the sampling episode are non

- detect, then:

Conc congener 

### = 0

2. Calculate average concentration of individual congener for the data set:

Avg congener 

### = ∑ Conc congener 

### / # sampling periods

3. Calculate individual congener TEQ using the WHO

- 1998 toxic equivalency factors (TEFs) shown in Table 3:

TEQ congener 

### = TEF congener 

### x Avg congene r



### 4. Total TEQ concentration = ∑ TEQ congener 

### (for all congeners)

EPA used a similar methodology to calc ulate th e toxic

- weighted pound equivalent (TWPE) of dioxin using the TWFs reported in Table 1 , the average concentration by congener, and the sampling point stream flowrate.

5. Calculate individual congener TWPE using the TWFs shown in Table 1:

TWPE congener 

### (l b/year) = TWF congener 

### x Avg congener 

### ( p g/L)

x Flowrate (gal/day) x conversion factors

6. Total TWPE = ∑ TWPE congener 

### (for all congeners)

6. S UMMARY



### EPA used the CBI sampling data to compute total dioxin concentrations and loads for all congeners for the streams included in the EPA and voluntary sampling programs. EPA used the results of the dioxin analysis to answer the following questions:

• 

### What are the sources of dioxin in CCH wastewater?

• 

### Is dioxin being discharged to receiving streams from CCH facilities?

• 

### Is dioxin removed by CCH wastewater treatment?

EPA found that the vinyl chloride manufacturing process is the source of dioxin in the CCH manufacturing segment. EPA found very low leve ls of dioxin in the PVC manufacturing segment. Similarly, EPA calculated very low dioxin levels at all but one facility manufacturing chlorine. Although vinyl chloride manufacturers discharge the majority of dioxin for the CCH

### 10 manufacturing segments, one f acility accounts for the vast majority of dioxin being discharged. In addition, the majority of chlorinated hydrocarbon manufacturing facilities have wastewater treatment technology that would potentially match "best available technology" for the industry

. Therefore, EPA will work with the few facilities with significant dioxin discharges through permitting and will not move forward with the development of effluent guidelines for the CCH manufacturing segments.Appendix A



### 11 Appendix A

. Summary of CBI Reports Generated During CCH Data Collection a

Reports Generated

Facility Location Site Visit Report EPA Sampling

Plan EPA Sampling Episode Report EPA Sampling Engineering

Report VSP Sampling

Plan VSP Sampling Episode Report
Dow Chemical Co. Freeport, TX X X X X X X

Dow Chemical Co. Plaquemine, LA X X X

Formosa Plastics Corp. Baton Rouge, LA X X X

Formosa Plastics Corp. Delaware City, DE X

Formosa Plastics Corp. Point Comfort, TX X X X

Georgia Gulf Corp. Lake Charles, LA X X Georgia Gulf Corp. Plaquemine, LA X X X OxyVinyls Deer Park, TX X X OxyVinyls Ingleside, TX X X X X X X OxyVinyls La

Porte VCM La Porte, TX X X X X X X

OxyVinyls Battleground

Chlor

- Alkali La Porte, TX

X

OxyVinyls

Pasadena PVC Pasadena, TX X

Pioneer (now Olin) St. Gabriel, LA X
PPG Industries,

Inc. Lake Charles, LA X X X

Shintech, Inc. Addis, LA X X X X

Westlake Calvert City, KY X X

Westlake Geismar, LA X X

a All reports are considered Confidential Business Information and are not included in the public docket.Appendix B



### 12 Appendix B. CCH Facility List (2006)

Facility Name Location

Chlorine Only

ASHTA Chemicals, Inc. Ashtabula, OH

Bayer Corp. Baytown, TX

DuPont Niagara Falls, NY

ERCO Worldwide Port Edwards, WI

General Electric Co. Burkville, AL

General Electric Co. Mt. Vernon, IN
Georgia Pacific Corp. Green Bay, WI

Georgia Pacific Corp. Muskogee, OK

Georgia Pacific Corp. Rincon, GA

Kuehne Chemical Co., Inc. Delaware City, DE

Kuehne Chemical Co., Inc. South Kearny, NJ

Olin Corp. Augusta, GA

Olin Corp. Charleston, TN

Olin Corp. McIntosh, AL

Olin Corp. Niagara Falls, NY

Olin (formerly Pioneer) Henderson, NV

Olin (formerly Pioneer) St. Gabriel, LA

OxyChem Convent, LA

OxyChem Hahnville, LA

OxyChem Mobile, AL

OxyChem Muscle Shoals, AL

OxyChem Niagara Falls, NY

OxyVinyls Battleground La Porte, TX

Titanium Metals Corporation of America (TIMET) Henderson, NV

US Magnesium Salt Lake City, UT

Chlorinated Hydrocarbon Only

Dover Chemical Corp. Dover, OH

Dover Chemical Corp. Hammond, IN

Dow Corning Carrollton, KY

DuPont Performance Elastomers La Place, LA

DuPont Performance Elastomers Louisville, KY

Ferro Corp. Bridgeport, NJ

Hexion Specialty Chemicals, Inc. Norco, LA
OxyVinyls Deer Park Deer Park, TX

OxyVinyls La Porte La Porte, TX

Velsicol Chemical Corp. Memphis, TN

Westlake Monomers Geismar, LA

PVC Only

Certainteed Corp. Westlake, LAAppendix B



### 13 Facility Name Location

Colorite Specialty Resins Burlington, NJ

Dow Chemical Co. Texas City, TX

Formosa Plastics Corp. Delaware City, DE

Georgia Gulf Corp. Aberdeen, MS

Georgia Gulf Corp. Oklahoma City, OK

OxyVinyls Louisville, KY

OxyVinyls Pedricktown, NJ

OxyVinyls Deer Park PVC Deer Park, TX

OxyVinyls Pasadena PVC Pasadena, TX

Polyone Corp. Henry, IL
Polyone Corp. Louisville, KY

Polyone Corp. Pedricktown, NJ

Shintech, Inc. Addis, LA

Shintech, Inc. Freeport, TX
Westlake PVC Corp Calvert City, KY

Westlake Monomers Geismar, LA

Integrated Facilities

– Facilities manufacture chemicals in more than one CCH segment

Dow Chemical Co. Freeport, TX

Dow Chemical Co. Plaquemine, LA

Formosa Baton Rouge Baton Rouge, LA

Formosa Plastics Corp. Point Comfort, TX

Georgia Gulf Corp. Plaquemine, LA

OxyChem Geismar, LA

OxyChem Wichita, KS

OxyVinyls Ingleside, TX

PPG Industries, Inc. Lake Charles, LA

PPG Industries, Inc. Natrium, WV

Shintech, Inc. Plaquemine, LA

Westlake Monomers Calvert City, KY