Appendix 6 Detailed Risk Modeling Results 
Source Category Facility NEI ID Facility Name Address 

Polybutadiene Rubber Production NEI32876 AMERICAN SYNTHETIC RUBBER 4500 CAMPGROUND R

Polybutadiene Rubber Production NEI33012

FIRESTONE POLYMERS/LAKE CHARLES FACILITY HWY 108 

Polybutadiene Rubber Production NEI7039

GOODYEAR TIRE & RUBBER BEAUMONT CHEMICAL PLANT

11241 INTERSTATE HW10 

Polybutadiene Rubber Production NEI7446 LANXESS CORPORATION FM 1006 

Polybutadiene Rubber Production NEI8307 Firestone FM 1006 & HWY 105 

Table 1 - Facility Identification Information

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Cancer 

MIR

Cancer

 Incidence

Noncancer 

Max HI

Target 

Organ

Cancer 

MIR

Noncancer 

Max HI

Targe

Organ

NEI32876 2.98E-06 6.25E-04 4.96E-02 reproductive 3.03E-06 5.04E-02 ReproducNEI33012 5.24E-07 5.42E-05 8.95E-03 neurological 2.01E-06 3.65E-02 RespiratNEI7039 1.19E-05 6.32E-04 1.90E-01 reproductive 1.00E-05 1.85E-01 ReproducNEI7446 1.78E-05 1.20E-03 2.97E-01 reproductive 1.96E-05 3.27E-01 ReproducNEI8307 9.09E-06 3.73E-04 1.52E-01 reproductive 9.80E-06 1.63E-01 Reproduc1 BOLD indicates a cancer risk great than 1 in a million or a noncancer risk greater than 12 Facility cancer risk represent MIR at census block locations using Draft 2005 NATA

Facility NEI ID

 Source Category Chronic Risk 1

Table 2 – Maximum Predicted HEM-3 Chronic Risks

 Facility-Wide Chronic Risk 1, 2

1 of 1
REL AEGL1 AEGL2 ERPG1 ERPG2

NEI32876 1,3-Butadiene 0.00E+00 5.07E-03 6.33E-04 5.07E-03 6.33E-04

NEI32876 Styrene 4.84E-02 1.20E-02 1.85E-03 1.20E-02 1.85E-03

NEI32876 Toluene 1.23E+01 6.05E-01 1.01E-01 6.05E-01 2.39E-01

NEI33012 1,3-Butadiene 0.00E+00 1.65E-03 2.07E-04 1.65E-03 2.07E-04

NEI33012 Styrene 4.79E-01 1.18E-01 1.83E-02 1.18E-01 1.83E-02

NEI33012 n-Hexane 0.00E+00 0.00E+00 9.67E-03 0.00E+00 0.00E+00

NEI7039 1,3-Butadiene 0.00E+00 6.65E-03 8.31E-04 6.65E-03 8.31E-04

NEI7039 Ethyl benzene 0.00E+00 0.00E+00 0.00E+00 0.00E+00 0.00E+00

NEI7039 Nickel compounds 1.73E-03 0.00E+00 0.00E+00 0.00E+00 0.00E+00

NEI7039 Styrene 1.02E-01 2.53E-02 3.90E-03 2.53E-02 3.90E-03

NEI7039 n-Hexane 0.00E+00 0.00E+00 1.84E-03 0.00E+00 0.00E+00

NEI7446 1,3-Butadiene 0.00E+00 1.41E-03 1.76E-04 1.41E-03 1.76E-04

NEI7446 Chlorobenzene 0.00E+00 3.95E-02 2.63E-03 0.00E+00 0.00E+00

NEI7446 Methanol 2.48E-03 1.01E-04 2.57E-05 1.01E-04 2.57E-05

NEI7446 Styrene 1.21E-03 2.98E-04 4.61E-05 2.98E-04 4.61E-05

NEI7446 Toluene 5.39E-03 2.66E-04 4.43E-05 2.66E-04 1.05E-04

NEI7446 n-Hexane 0.00E+00 0.00E+00 6.46E-04 0.00E+00 0.00E+00

NEI8307 1,3-Butadiene 0.00E+00 8.60E-03 1.08E-03 8.60E-03 1.08E-03

NEI8307 Styrene 2.29E-01 5.65E-02 8.74E-03 5.65E-02 8.74E-03

NEI8307 n-Hexane 0.00E+00 0.00E+00 1.19E-02 0.00E+00 0.00E+00

1 Some maximum 

 Note: BOLD indicates acute risks greater than 1

Table 3 – Maximum Predicted Acute Risks (HEM-AERMOD)

Pollutant

Maximum Hazard Quotient1

Facility NEI ID

 1 of 1
NEI32876 Toluene REL 1.23E+01 1.40E+00

Refined AERMOD Modeling; Examined results for 

maximum off-site impact

Table 4 – Maximum Predicted Acute Risks Greater than 1 (Refined Approach)

Refined Modeling Approach 2 Pollutant Criteria

HEM-3

(Screening)

Refined

Results 1

2

 Indicates modeling technique used to refined estimates; see Appendix 7 for figures depicting off-site impacts

Facility NEI ID

1

 Facilites with a HEM-3 screening acute value greater than 1 were remodeled with a more refined approach

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