Covestro actively working with EPA and the University of Massachusetts Amherst to improve environmental risk model's accuracy, minimize waste and promote sustainability

University of Massachusetts Amherst revised Bayer’s PERI ranking related to Covestro’s Baytown site

Pittsburgh, PA, December 19, 2016 — The U.S. Environmental Protection Agency (EPA)’s Risk-Screening Environmental Indicators (RSEI) model has been used by the Political Economy Research Institute (PERI) at the University of Massachusetts Amherst to generate the Toxic 100 Air Polluters List. Bayer’s ranking on the list mainly resulted from Covestro LLC's* Baytown facility which transferred its diaminotoluene (mixed isomers) waste to Clean Harbor’s Deer Park facility** in Texas for incineration. The RSEI model is a screening level model and assumes a Destruction & Removal Efficiency (DRE) of only 99% for all U.S. incineration facilities, while the Texas Commission on Environmental Quality (TCEQ) has concluded that the efficiency of Clean Harbor’s incinerators is 99.99996%. Clean Harbor’s DREs can be found in the Notice of Compliance (NOC) documents, Table 2-1. A letter from the Texas Commission on Environmental Quality which confirmed such compliance can be found NOC Confirmatory Performance Test Letter. Using the actual, facility-specific DREs from these documents, Bayer’s RSEI score and corresponding ranking in each previous version of the PERI Toxic 100 Air Polluters list should be as follows:


PERI Version (Year) TRI Data Year Original Score Revised Score Original Ranking Revised Ranking based on new DRE

1 (2004)

2002

Not listed

Not listed

Not listed

Not listed

2 (2008)

2005

172,773

8,094

4th

Not listed

3 (2010)

2006

189,649

10,072

1st

75th

4 (2012)

2007

73,120,229

318,950

1st

73rd

5 (2013)

2010

5,257,823

476,487

2nd

41st

Note: Scores in different versions of PERI’s Toxic 100 Air Polluters list are not comparable due to changes in the EPA’s RSEI model methodology.

Based on a communication between Covestro LLC and the EPA, the Toxic Release Inventory (TRI) Program Division is planning to integrate industry-specific DREs into the next version of the RSEI model, which uses the 2016 TRI data. Covestro LLC will be actively working with EPA and the University of Massachusetts Amherst to improve RSEI model’s accuracy, minimize waste and promote sustainability.


*Covestro LLC’s ultimate corporate parent is Covestro Deutschland AG, which is publicly traded in Germany. Bayer AG is currently a majority shareholder of Covestro Deutschland AG.

**Located at 2027 Independence Parkway South, La Porte, TX 77571