4/30/2012 Page 1 of 109



### Chemical ID: P-11-0484 Reviewer: Delpire/SS
REVISED STANDARD REVIEW EXPOSURE REPORT

Results Table: Dose, Concentration, and Days Exceeded Results Summary

Exposure Scenario 1 Water Landfill Stack Air Fugitive Air Drinking Water Fish Ingestion ADR LADD ADR LADD 7Q10 4 CC = 200 PDM Days Exceede d LADD ADR LADD ADR LADD

Release activity(ies) 2 ; exposure calculation(s) 3 mg/kg/day mg/kg/day mg/kg/day mg/kg/day μg/l # Days mg/kg/day mg/kg/day mg/kg/day mg/kg/day mg/kg/day

Max ADR --- --- --- --- --- --- --- 4.25E-04 --- --- ---

Max LADD --- --- --- --- --- --- --- --- 1.98E-07 --- ---

Max ADR: max acut e eco 2.75E-02 --- 6.27E-04 --- 5.63E+02 --- --- 5.41E-03 --- --- ---

Max LADD --- 2.67E-05 --- 3.62E-07 --- --- 2.92E-05 --- 1.35E-05 --- ---

Max ADR:
m ax acute eco 3.46E-02 --- 4.11E-04 --- 7.58E+02 --- --- 2.98E-05 --- --- ---

Max LADD --- 6.19E-06 --- 8.38E-08 --- --- 5.65E-08 --- 2.60E-08 --- --- Max ADR:
m ax acute eco 2.45E-04 --- 5.59E-06 --- 5.03E+00 --- --- 4.84E-05 --- --- ---

Max LADD --- 2.10E-08 --- 2.85E-10 --- --- 2.30E-08 --- 1.06E-08 --- --- : Max ADR: m ax acute eco 1.10E-01 --- 8.72E-04 --- 2.55E+03 --- --- --- --- --- ---

: Max LADD --- 3.28E-06 --- 4.45E-08 --- --- --- --- --- --- ---

Max ADR:
m ax acute eco 9.91E-04 --- 1.18E-05 --- 2.17E+01 --- --- 2.85E-05 --- --- ---

Max LADD --- 4.42E-08 --- 5.99E-10 --- --- 1.35E-08 --- 6.24E-09 --- --- : Max ADR: m ax acute eco 7.12E-02 --- 5.45E-04 --- 1.60E+03 --- --- --- --- --- ---

: Max LADD --- 2.05E-06 --- 2.78E-08 --- --- --- --- --- --- ---

Max ADR:
m ax acute eco 4.10E-02 --- 9.34E-04 --- 8.39E+02 --- --- 1.61E-05 --- --- ---

PDM1 --- --- --- --- 8.39E+02 --- --- --- --- --- Max LADD --- 2.14E-04 --- 2.90E-06 --- --- 4.65E-07 --- 2.15E-07 --- --- Max ADR:
m ax acute eco 3.02E-02 --- 6.90E-04 --- 6.20E+02 --- --- 1.19E-05 --- --- ---4/30/2012 Page 2 of 109

Exposure Scenario 1 Water Landfill Stack Air Fugitive Air Drinking Water Fish Ingestion ADR LADD ADR LADD 7Q10 4 CC = 200 PDM Days Exceede d LADD ADR LADD ADR LADD

Release activity(ies) 2 ; exposure calculation(s) 3 mg/kg/day mg/kg/day mg/kg/day mg/kg/day μg/l # Days mg/kg/day mg/kg/day mg/kg/day mg/kg/day mg/kg/day

Max LADD --- 5.19E-06 --- 7.03E-08 --- --- 1.13E-08 --- 5.21E-09 --- --- Max ADR:
ma x acute eco 2.44E-02 --- 2.90E-04 --- 5.35E+02 --- --- 2.11E-05 --- --- ---

Max LADD --- 3.27E-06 --- 4.43E-08 --- --- 3.00E-08 --- 1.38E-08 --- ---

Max ADR:
ma x acute eco 6.29E-03 --- 1.43E-04 --- 1.29E+02 --- --- 6.30E-01 --- --- ---

Max LADD --- 5.40E-07 --- 7.31E-09 --- --- 3.01E-04 --- 1.39E-04 --- --- Max ADR:
ma x acute eco 1.01E-02 --- 2.29E-04 --- 2.06E+02 --- --- 9.90E-01 --- --- ---

Max LADD --- 8.63E-07 --- 1.17E-08 --- --- 4.72E-04 --- 2.18E-04 --- --- Max ADR;
ma x acute eco 2.20E-03 --- 2.61E-05 --- 48.11 --- 2.17E-03 --- ---

: Max LADD --- 9.81E-08 --- 1.33E-09 --- --- 1.03E-06 4.75E-07 --- ---
1 Exposure scenario titles consist of release activity followed by exposure calculation abbreviation. 2 Release activities are from engineering report's Manuf acturing (Mfg), Processing (Proc) and Use release activity labels. Multiple release activities are combined in one exposure scenario if their releases occur at same location. 3 Exposure calculations are Acute Dose Rate (A DR), Lifetime Average Daily Dose (LADD), and Probabilistic Dilution Model (PDM). Th ere may be one, two, or all three exposure calculations per exposure scenario. CC is the aquatic concentration of concern. 4 This column displays concentration values for the 7Q 10 streamflow, which is defined as the average daily streamflow of the seven consecutive days of lowest flow within a ten year period. 

### Results Table: Exposure Based (X B)/Persistent (P2B2) Criteria

Parameter Exp Based Persistent Exceedance Value Drinking (Surface) Wate r Dose (mg/kg/day) NA No Fish Ingestion Dose (mg/kg/day) NA No Inhalation Dose (mg/kg/day) NA No Groundwater Dose (mg/kg/day) NA No Surface Water Release After Treatment (kg/yr) NA Total Release After Treatment (kg/yr) NA Consumer Use? No



### Fate test recommendations:4/30/2012 Page 3 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:1 Number of Release Sites: Release Activity: Max ADR Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 4 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 1 RELEASE ACTI VITY Max ADR
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): 0.00 μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 1.27E-03 μg/m 3 Max 24 Hour Average Air Concentration (Stack): 2.31 μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 9.34E-08 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 5.08E-07 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) 4.25E-04 N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 5 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 6 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:2 Number of Release Sites: Release Activity: : Max LADD Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 7 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 2 RELEASE ACTI VITY: Max LADD
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): N/A μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 2.69E-03 μg/m 3 Max 24 Hour Average Air Concentration (Stack): N/A μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 1.98E-07 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 1.08E-06 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) N/A N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 8 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 9 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:3 Number of Release Sites: Release Activity: Max ADR Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 10 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 3 Number of S ites: RELEASE ACTIVITY Max ADR SIC-CODE DESCRIPTION: POTW (Indust., incl udes POTWs which receive ind. disch.) SIC-CODE (S): Subset of 49 52 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 288.00 123.84 78.18 66.05 15.17 35.29 55.90 66.16
ALL 10 39.60 13.29 7.76 7.57 110.35 328.82 563.14 577.28

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 2.92E-06 2.12E-05 mg/kg/day 3.95E-08 2.87E-07 mg/kg/day
LADC pot 1.50E-04 1.09E-03 mg/L 4.73E-04 3.44E-03 mg/kg
Acute
ADR pot 2.95E-03 2.75E-02 mg/kg/day 8.61E-05 6.27E-04 mg/kg/day

SIC Code Comments:4/30/2012 Page 11 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 3 RELEASE ACTIVITY Max ADR
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): 0.00 μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concen tration (Stack): 0.14 μg/m 3 Max 24 Hour Average Air Concentration (Stack): 29.40 μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 1.07E-05 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 5.80E-05 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) 5.41E-03 N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 12 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 13 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:4 Number of Release Sites: Release Activity: Max LADD Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 14 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 4 Number of S ites: RELEASE ACTIVITY: Max LADD SIC-CODE DESCRIPTION: POTW (Indust., incl udes POTWs which receive ind. disch.) SIC-CODE (S): Subset of 49 52 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 288.00 123.84 78.18 66.05 N/A N/A N/A N/A
ALL 10 39.60 13.29 7.76 7.57 N/A N/A N/A N/A

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 3.67E-06 2.67E-05 mg/kg/day 4.98E-08 3.62E-07 mg/kg/day
LADC pot 1.88E-04 1.37E-03 mg/L 5.96E-04 4.33E-03 mg/kg
Acute
ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Code Comments:4/30/2012 Page 15 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES
SCENARIO #: 4 ACTIVITY: Max LADD
RELEASE DESCRIPTION:
EXPOSED POPULATION: Adult

NUMBER OF SITES NON-SLUDGE LANDFILL RELEASE AND DAYS OF RELEASE (kg/site/day)/(days) LANDFILLED SLUDGE 1 AND DAYS OF RELEASE (kg/site/day)/(days) MIGRATION DESCRIPTOR 2 ADSORPTION TO WASTEWATER SLUDGE (%) DRINKING WATER TREATMENT (%)

0.00 0.00

1 Landfilled sludge equals the fraction adsorbed to wastewater treatment sludge times the surface water pre-treatment release.

2 Migration Descriptor Log Koc Groundwater Concentration (GWC) (mg/L per kg release) Negligible no migration None Negligible to slow > 4.5 3.21E-6 Slow <4.5 to 3.5 2.67E-5 Moderate <3.5 to 2.5 5.95E-5 Rapid <2.5 7.55E-5

Exposure Units Results ASSUMPTIONS ED (years) AT (years) BW (kg) IR (L/day) Cancer LADD pot (mg/kg/day) 2.92E-05 30.00 75.00 71.80 1.40 LADC pot (mg/L) 1.50E-03 30.00 75.00 NA NA

REMARKS:4/30/2012 Page 16 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 4 RELEASE ACTIVI TY: Max LADD
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): N/A μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concen tration (Stack): 0.18 μg/m 3 Max 24 Hour Average Air Concentration (Stack): N/A μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 1.35E-05 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 7.32E-05 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) N/A N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 17 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 18 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor
ENVIRONMENTAL RELEASES
Scenario#:5 Number of Release Sites: Release Activity: Max ADR Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 19 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 5 Number of Site s: RELEASE ACTIVITY: Max ADR
SIC-CODE DESCRIPTION: POTW's (All facilities) SIC-CODE (S): 4952 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 125.56 44.02 26.80 22.53 6.40 18.26 30.00 35.69
ALL 10 11.11 1.94 1.06 0.96 72.37 414.43 758.49 837.50

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 5.47E-07 6.19E-06 mg/kg/day 7.41E-09 8.38E-08 mg/kg/day
LADC pot 2.81E-05 3.17E-04 mg/L 8.87E-05 1.00E-03 mg/kg
Acute
ADR pot 1.53E-03 3.46E-02 mg/kg/day 3.64E-05 4.11E-04 mg/kg/day

SIC Code Comments:4/30/2012 Page 20 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 5 RELEASE ACTIVITY: Max ADR
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): 0.00 μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 3.54E-04 μg/m 3 Max 24 Hour Average Air Concentration (Stack): 0.16 μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 2.60E-08 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 1.42E-07 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) 2.98E-05 N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 21 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 22 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:6 Number of Release Sites: Release Activity: Max LADD Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 23 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 6 Number of Site s: RELEASE ACTIVITY: Max LADD
SIC-CODE DESCRIPTION: POTW's (All facilities) SIC-CODE (S): 4952 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 125.56 44.02 26.80 22.53 N/A N/A N/A N/A
ALL 10 11.11 1.94 1.06 0.96 N/A N/A N/A N/A

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 5.47E-07 6.19E-06 mg/kg/day 7.41E-09 8.38E-08 mg/kg/day
LADC pot 2.81E-05 3.17E-04 mg/L 8.87E-05 1.00E-03 mg/kg
Acute
ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Code Comments:4/30/2012 Page 24 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES
SCENARIO #: 6 ACTIVITY: Max LADD
RELEASE DESCRIPTION:
EXPOSED POPULATION: Adult

NUMBER OF SITES NON-SLUDGE LANDFILL RELEASE AND DAYS OF RELEASE (kg/site/day)/(days) LANDFILLED SLUDGE 1 AND DAYS OF RELEASE (kg/site/day)/(days) MIGRATION DESCRIPTOR 2 ADSORPTION TO WASTEWATER SLUDGE (%) DRINKING WATER TREATMENT (%)

0.00 0.00

1 Landfilled sludge equals the fraction adsorbed to wastewater treatment sludge times the surface water pre-treatment release.

2 Migration Descriptor Log Koc Groundwater Concentration (GWC) (mg/L per kg release) Negligible no migration None Negligible to slow > 4.5 3.21E-6 Slow <4.5 to 3.5 2.67E-5 Moderate <3.5 to 2.5 5.95E-5 Rapid <2.5 7.55E-5

Exposure Units Results ASSUMPTIONS ED (years) AT (years) BW (kg) IR (L/day) Cancer LADD pot (mg/kg/day) 5.65E-08 30.00 75.00 71.80 1.40 LADC pot (mg/L) 2.90E-06 30.00 75.00 NA NA

REMARKS:4/30/2012 Page 25 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 6 RELEASE ACTIVITY: Max LADD
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): N/A μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 3.54E-04 μg/m 3 Max 24 Hour Average Air Concentration (Stack): N/A μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 2.60E-08 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 1.42E-07 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) N/A N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 26 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 27 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:7 Number of Release Sites: Release Activity: Max ADR Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 28 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 7 Number of Site s: RELEASE ACTIVITY: Max ADR SIC-CODE DESCRIPTION: POTW (Indust., incl udes POTWs which receive ind. disch.) SIC-CODE (S): Subset of 49 52 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 288.00 123.84 78.18 66.05 0.14 0.31 0.50 0.59
ALL 10 39.60 13.29 7.76 7.57 0.98 2.93 5.03 5.15

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 2.89E-09 2.10E-08 mg/kg/day 3.92E-11 2.85E-10 mg/kg/day
LADC pot 1.48E-07 1.08E-06 mg/L 4.69E-07 3.41E-06 mg/kg
Acute
ADR pot 2.63E-05 2.45E-04 mg/kg/day 7.69E-07 5.59E-06 mg/kg/day

SIC Code Comments:4/30/2012 Page 29 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 7 RELEASE ACTIVITY: Max ADR
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): 0.00 μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 1.44E-04 μg/m 3 Max 24 Hour Average Air Concentration (Stack): 0.26 μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 1.06E-08 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 5.76E-08 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) 4.84E-05 N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 30 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 31 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:8 Number of Release Sites: Release Activity: Max LADD Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 32 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 8 Number of Site s: RELEASE ACTIVITY: Max LADD SIC-CODE DESCRIPTION: POTW (Indust., incl udes POTWs which receive ind. disch.) SIC-CODE (S): Subset of 49 52 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 288.00 123.84 78.18 66.05 N/A N/A N/A N/A
ALL 10 39.60 13.29 7.76 7.57 N/A N/A N/A N/A

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 2.89E-09 2.10E-08 mg/kg/day 3.92E-11 2.85E-10 mg/kg/day
LADC pot 1.48E-07 1.08E-06 mg/L 4.69E-07 3.41E-06 mg/kg
Acute
ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Code Comments:4/30/2012 Page 33 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES
SCENARIO #: 8 ACTIVITY: Max LADD
RELEASE DESCRIPTION:
EXPOSED POPULATION: Adult

NUMBER OF SITES NON-SLUDGE LANDFILL RELEASE AND DAYS OF RELEASE (kg/site/day)/(days) LANDFILLED SLUDGE 1 AND DAYS OF RELEASE (kg/site/day)/(days) MIGRATION DESCRIPTOR 2 ADSORPTION TO WASTEWATER SLUDGE (%) DRINKING WATER TREATMENT (%)

0.00 0.00

1 Landfilled sludge equals the fraction adsorbed to wastewater treatment sludge times the surface water pre-treatment release.

2 Migration Descriptor Log Koc Groundwater Concentration (GWC) (mg/L per kg release) Negligible no migration None Negligible to slow > 4.5 3.21E-6 Slow <4.5 to 3.5 2.67E-5 Moderate <3.5 to 2.5 5.95E-5 Rapid <2.5 7.55E-5

Exposure Units Results ASSUMPTIONS ED (years) AT (years) BW (kg) IR (L/day) Cancer LADD pot (mg/kg/day) 2.30E-08 30.00 75.00 71.80 1.40 LADC pot (mg/L) 1.18E-06 30.00 75.00 NA NA

REMARKS:4/30/2012 Page 34 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 8 RELEASE ACTIVITY: Max LADD
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): N/A μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 1.44E-04 μg/m 3 Max 24 Hour Average Air Concentration (Stack): N/A μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 1.06E-08 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 5.76E-08 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) N/A N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 35 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 36 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:9 Number of Release Sites: Release Activity: Max ADR Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 37 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 9 Number of Sites: RELEASE ACTIVITY: Max ADR
SIC-CODE DESCRIPTION: SIC-CODE (S): EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 4.46 12.03 19.18 23.27
ALL 10 153.65 1363.64 2553.19 2553.19

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 9.54E-08 3.28E-06 mg/kg/day 1.29E-09 4.45E-08 mg/kg/day
LADC pot 4.89E-06 1.68E-04 mg/L 1.55E-05 5.32E-04 mg/kg
Acute
ADR pot 1.00E-03 0.11 mg/kg/day 2.53E-05 8.72E-04 mg/kg/day

SIC Code Comments:4/30/2012 Page 38 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:10 Number of Release Sites: Release Activity: Max LADD Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 39 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 10 Number of Sites: RELEASE ACTIVITY: : Max LADD
SIC-CODE DESCRIPTION: SIC-CODE (S): EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 N/A N/A N/A N/A
ALL 10 N/A N/A N/A N/A

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 9.54E-08 3.28E-06 mg/kg/day 1.29E-09 4.45E-08 mg/kg/day
LADC pot 4.89E-06 1.68E-04 mg/L 1.55E-05 5.32E-04 mg/kg
Acute
ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Code Comments:4/30/2012 Page 40 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:11 Number of Release Sites: Release Activity: Max ADR Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 41 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 11 Number of Site s: RELEASE ACTIVITY: Max ADR
SIC-CODE DESCRIPTION: POTW's (All facilities) SIC-CODE (S): 4952 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 125.56 44.02 26.80 22.53 0.18 0.52 0.86 1.02
ALL 10 11.11 1.94 1.06 0.96 2.07 11.86 21.70 23.96

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 3.91E-09 4.42E-08 mg/kg/day 5.30E-11 5.99E-10 mg/kg/day
LADC pot 2.01E-07 2.27E-06 mg/L 6.34E-07 7.17E-06 mg/kg
Acute
ADR pot 4.37E-05 9.91E-04 mg/kg/day 1.04E-06 1.18E-05 mg/kg/day

SIC Code Comments:4/30/2012 Page 42 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 11 RELEASE ACTIVITY: Max ADR
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): 0.00 μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 8.49E-05 μg/m 3 Max 24 Hour Average Air Concentration (Stack): 0.15 μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 6.24E-09 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 3.40E-08 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) 2.85E-05 N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 43 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 44 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:12 Number of Release Sites: Release Activity: Max LADD Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 45 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 12 Number of Site s: RELEASE ACTIVITY: Max LADD
SIC-CODE DESCRIPTION: POTW's (All facilities) SIC-CODE (S): 4952 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 125.56 44.02 26.80 22.53 N/A N/A N/A N/A
ALL 10 11.11 1.94 1.06 0.96 N/A N/A N/A N/A

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 3.91E-09 4.42E-08 mg/kg/day 5.30E-11 5.99E-10 mg/kg/day
LADC pot 2.01E-07 2.27E-06 mg/L 6.34E-07 7.17E-06 mg/kg
Acute
ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Code Comments:4/30/2012 Page 46 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES
SCENARIO #: 12 ACTIVITY: Max LADD
RELEASE DESCRIPTION:
EXPOSED POPULATION: Adult

NUMBER OF SITES NON-SLUDGE LANDFILL RELEASE AND DAYS OF RELEASE (kg/site/day)/(days) LANDFILLED SLUDGE 1 AND DAYS OF RELEASE (kg/site/day)/(days) MIGRATION DESCRIPTOR 2 ADSORPTION TO WASTEWATER SLUDGE (%) DRINKING WATER TREATMENT (%)

0.00 0.00

1 Landfilled sludge equals the fraction adsorbed to wastewater treatment sludge times the surface water pre-treatment release.

2 Migration Descriptor Log Koc Groundwater Concentration (GWC) (mg/L per kg release) Negligible no migration None Negligible to slow > 4.5 3.21E-6 Slow <4.5 to 3.5 2.67E-5 Moderate <3.5 to 2.5 5.95E-5 Rapid <2.5 7.55E-5

Exposure Units Results ASSUMPTIONS ED (years) AT (years) BW (kg) IR (L/day) Cancer LADD pot (mg/kg/day) 1.35E-08 30.00 75.00 71.80 1.40 LADC pot (mg/L) 6.95E-07 30.00 75.00 NA NA

REMARKS:4/30/2012 Page 47 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 12 RELEASE ACTIVITY: Max LADD
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): N/A μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 8.49E-05 μg/m 3 Max 24 Hour Average Air Concentration (Stack): N/A μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 6.24E-09 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 3.40E-08 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) N/A N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 48 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 49 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:13 Number of Release Sites: Release Activity: Max ADR Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 50 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 13 Number of Sites: RELEASE ACTIVITY Max ADR
SIC-CODE DESCRIPTION: SIC-CODE (S): EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 2.79 7.52 11.99 14.55
ALL 10 96.03 852.27 1595.74 1595.74

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 5.96E-08 2.05E-06 mg/kg/day 8.07E-10 2.78E-08 mg/kg/day
LADC pot 3.06E-06 1.05E-04 mg/L 9.66E-06 3.33E-04 mg/kg
Acute
ADR pot 6.28E-04 7.12E-02 mg/kg/day 1.58E-05 5.45E-04 mg/kg/day

SIC Code Comments:4/30/2012 Page 51 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:14 Number of Release Sites: Release Activity: : Max LADD Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 52 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 14 Number of Sites: RELEASE ACTIVITY: : Max LADD
SIC-CODE DESCRIPTION: SIC-CODE (S): EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 N/A N/A N/A N/A
ALL 10 N/A N/A N/A N/A

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 5.96E-08 2.05E-06 mg/kg/day 8.07E-10 2.78E-08 mg/kg/day
LADC pot 3.06E-06 1.05E-04 mg/L 9.66E-06 3.33E-04 mg/kg
Acute
ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Code Comments:4/30/2012 Page 53 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:15 Number of Release Sites: Release Activity: Max ADR Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 54 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 15 Number of Site s: RELEASE ACTIVITY: Max ADR SIC-CODE DESCRIPTION: POTW (Indust., incl udes POTWs which receive ind. disch.) SIC-CODE (S): Subset of 49 52 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 288.00 123.84 78.18 66.05 22.61 52.59 83.31 98.61
ALL 10 39.60 13.29 7.76 7.57 164.47 490.07 839.30 860.37

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 2.95E-05 2.14E-04 mg/kg/day 3.99E-07 2.90E-06 mg/kg/day
LADC pot 1.51E-03 1.10E-02 mg/L 4.78E-03 3.47E-02 mg/kg
Acute
ADR pot 4.39E-03 4.10E-02 mg/kg/day 1.28E-04 9.34E-04 mg/kg/day

SIC Code Comments:4/30/2012 Page 55 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 15 RELEASE ACTIVITY: Max ADR
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): 0.00 μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 2.93E-03 μg/m 3 Max 24 Hour Average Air Concentration (Stack): 8.76E-02 μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 2.15E-07 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 1.17E-06 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) 1.61E-05 N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 56 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 57 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:16 Number of Release Sites: Release Activity: PDM1 Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 58 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 16 Number of Site s: RELEASE ACTIVITY: PDM1 SIC-CODE DESCRIPTION: POTW (Indust., incl udes POTWs which receive ind. disch.) SIC-CODE (S): Subset of 49 52 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 288.00 123.84 78.18 66.05 22.61 52.59 83.31 98.61
ALL 10 39.60 13.29 7.76 7.57 164.47 490.07 839.30 860.37

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 2.95E-05 2.14E-04 mg/kg/day 3.99E-07 2.90E-06 mg/kg/day
LADC pot 1.51E-03 1.10E-02 mg/L 4.78E-03 3.47E-02 mg/kg
Acute
ADR pot 4.39E-03 4.10E-02 mg/kg/day 1.28E-04 9.34E-04 mg/kg/day

SIC Code Comments:4/30/2012 Page 59 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC CODE EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 16 RELEASE ACTIVITY: PDM1 SIC CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disch.)
ASSOCIATED SIC CODES: Subset of 4952
SIC CODE RESULTS

COC ( μ g/L) Percent of Year COC Exceeded Number of Days COC Exceeded Release days/year Loading (kg/site/day) Waste Water Treatment (%) High/Avg Analysis

200.00 High4/30/2012 Page 60 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:17 Number of Release Sites: Release Activity: Max LADD Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 61 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 17 Number of Site s: RELEASE ACTIVITY: Max LADD SIC-CODE DESCRIPTION: POTW (Indust., incl udes POTWs which receive ind. disch.) SIC-CODE (S): Subset of 49 52 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 288.00 123.84 78.18 66.05 N/A N/A N/A N/A
ALL 10 39.60 13.29 7.76 7.57 N/A N/A N/A N/A

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 2.95E-05 2.14E-04 mg/kg/day 3.99E-07 2.90E-06 mg/kg/day
LADC pot 1.51E-03 1.10E-02 mg/L 4.78E-03 3.47E-02 mg/kg
Acute
ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Code Comments:4/30/2012 Page 62 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES
SCENARIO #: 17 ACTIVITY: Max LADD
RELEASE DESCRIPTION:
EXPOSED POPULATION: Adult

NUMBER OF SITES NON-SLUDGE LANDFILL RELEASE AND DAYS OF RELEASE (kg/site/day)/(days) LANDFILLED SLUDGE 1 AND DAYS OF RELEASE (kg/site/day)/(days) MIGRATION DESCRIPTOR 2 ADSORPTION TO WASTEWATER SLUDGE (%) DRINKING WATER TREATMENT (%)

0.00 0.00

1 Landfilled sludge equals the fraction adsorbed to wastewater treatment sludge times the surface water pre-treatment release.

2 Migration Descriptor Log Koc Groundwater Concentration (GWC) (mg/L per kg release) Negligible no migration None Negligible to slow > 4.5 3.21E-6 Slow <4.5 to 3.5 2.67E-5 Moderate <3.5 to 2.5 5.95E-5 Rapid <2.5 7.55E-5

Exposure Units Results ASSUMPTIONS ED (years) AT (years) BW (kg) IR (L/day) Cancer LADD pot (mg/kg/day) 4.65E-07 30.00 75.00 71.80 1.40 LADC pot (mg/L) 2.39E-05 30.00 75.00 NA NA

REMARKS:4/30/2012 Page 63 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 17 RELEASE ACTIVITY: Max LADD
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites:

. Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): N/A μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 2.93E-03 μg/m 3 Max 24 Hour Average Air Concentration (Stack): N/A μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 2.15E-07 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 1.17E-06 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) N/A N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 64 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 65 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:18 Number of Release Sites: Release Activity: Max ADR Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 66 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 18 Number of Site s: RELEASE ACTIVITY: Max ADR SIC-CODE DESCRIPTION: POTW (Indust., incl udes POTWs which receive ind. disch.) SIC-CODE (S): Subset of 49 52 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 288.00 123.84 78.18 66.05 16.70 38.84 61.52 72.82
ALL 10 39.60 13.29 7.76 7.57 121.46 361.93 619.85 635.40

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 7.14E-07 5.19E-06 mg/kg/day 9.67E-09 7.03E-08 mg/kg/day
LADC pot 3.66E-05 2.66E-04 mg/L 1.16E-04 8.41E-04 mg/kg
Acute
ADR pot 3.25E-03 3.02E-02 mg/kg/day 9.48E-05 6.90E-04 mg/kg/day

SIC Code Comments:4/30/2012 Page 67 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 18 RELEASE ACTIVITY: Max ADR
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): 0.00 μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 7.09E-05 μg/m 3 Max 24 Hour Average Air Concentration (Stack): 6.47E-02 μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 5.21E-09 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 2.84E-08 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) 1.19E-05 N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 68 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 69 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:19 Number of Release Sites: Release Activity: Max LADD Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 70 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 19 Number of Site s: RELEASE ACTIVITY: Max LADD SIC-CODE DESCRIPTION: POTW (Indust., incl udes POTWs which receive ind. disch.) SIC-CODE (S): Subset of 49 52 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 288.00 123.84 78.18 66.05 N/A N/A N/A N/A
ALL 10 39.60 13.29 7.76 7.57 N/A N/A N/A N/A

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 7.14E-07 5.19E-06 mg/kg/day 9.67E-09 7.03E-08 mg/kg/day
LADC pot 3.66E-05 2.66E-04 mg/L 1.16E-04 8.41E-04 mg/kg
Acute
ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Code Comments:4/30/2012 Page 71 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES
SCENARIO #: 19 ACTIVITY: Max LADD
RELEASE DESCRIPTION:
EXPOSED POPULATION: Adult

NUMBER OF SITES NON-SLUDGE LANDFILL RELEASE AND DAYS OF RELEASE (kg/site/day)/(days) LANDFILLED SLUDGE 1 AND DAYS OF RELEASE (kg/site/day)/(days) MIGRATION DESCRIPTOR 2 ADSORPTION TO WASTEWATER SLUDGE (%) DRINKING WATER TREATMENT (%)

0.00 0.00

1 Landfilled sludge equals the fraction adsorbed to wastewater treatment sludge times the surface water pre-treatment release.

2 Migration Descriptor Log Koc Groundwater Concentration (GWC) (mg/L per kg release) Negligible no migration None Negligible to slow > 4.5 3.21E-6 Slow <4.5 to 3.5 2.67E-5 Moderate <3.5 to 2.5 5.95E-5 Rapid <2.5 7.55E-5

Exposure Units Results ASSUMPTIONS ED (years) AT (years) BW (kg) IR (L/day) Cancer LADD pot (mg/kg/day) 1.13E-08 30.00 75.00 71.80 1.40 LADC pot (mg/L) 5.80E-07 30.00 75.00 NA NA

REMARKS:4/30/2012 Page 72 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 19 RELEASE ACTIVITY: Max LADD
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): N/A μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 7.09E-05 μg/m 3 Max 24 Hour Average Air Concentration (Stack): N/A μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 5.21E-09 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 2.84E-08 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) N/A N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 73 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 74 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:20 Number of Release Sites: Release Activity: Max ADR Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 75 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 20 Number of Site s: RELEASE ACTIVITY: Max ADR
SIC-CODE DESCRIPTION: POTW's (All facilities) SIC-CODE (S): 4952 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 125.56 44.02 26.80 22.53 4.52 12.88 21.16 25.17
ALL 10 11.11 1.94 1.06 0.96 51.04 292.27 534.91 590.63

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 2.89E-07 3.27E-06 mg/kg/day 3.92E-09 4.43E-08 mg/kg/day
LADC pot 1.48E-05 1.68E-04 mg/L 4.69E-05 5.30E-04 mg/kg
Acute
ADR pot 1.08E-03 2.44E-02 mg/kg/day 2.56E-05 2.90E-04 mg/kg/day

SIC Code Comments:4/30/2012 Page 76 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 20 RELEASE ACTIVITY: Max ADR
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): 0.00 μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 1.88E-04 μg/m 3 Max 24 Hour Average Air Concentration (Stack): 0.12 μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 1.38E-08 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 7.52E-08 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) 2.11E-05 N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 77 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 78 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:21 Number of Release Sites: Release Activity: Max LADD Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 79 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 21 Number of Site s: RELEASE ACTIVITY: Max LADD
SIC-CODE DESCRIPTION: POTW's (All facilities) SIC-CODE (S): 4952 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 125.56 44.02 26.80 22.53 N/A N/A N/A N/A
ALL 10 11.11 1.94 1.06 0.96 N/A N/A N/A N/A

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 2.89E-07 3.27E-06 mg/kg/day 3.92E-09 4.43E-08 mg/kg/day
LADC pot 1.48E-05 1.68E-04 mg/L 4.69E-05 5.30E-04 mg/kg
Acute
ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Code Comments:4/30/2012 Page 80 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES
SCENARIO #: 21 ACTIVITY: Max LADD
RELEASE DESCRIPTION:
EXPOSED POPULATION: Adult

NUMBER OF SITES NON-SLUDGE LANDFILL RELEASE AND DAYS OF RELEASE (kg/site/day)/(days) LANDFILLED SLUDGE 1 AND DAYS OF RELEASE (kg/site/day)/(days) MIGRATION DESCRIPTOR 2 ADSORPTION TO WASTEWATER SLUDGE (%) DRINKING WATER TREATMENT (%)

0.00 0.00

1 Landfilled sludge equals the fraction adsorbed to wastewater treatment sludge times the surface water pre-treatment release.

2 Migration Descriptor Log Koc Groundwater Concentration (GWC) (mg/L per kg release) Negligible no migration None Negligible to slow > 4.5 3.21E-6 Slow <4.5 to 3.5 2.67E-5 Moderate <3.5 to 2.5 5.95E-5 Rapid <2.5 7.55E-5

Exposure Units Results ASSUMPTIONS ED (years) AT (years) BW (kg) IR (L/day) Cancer LADD pot (mg/kg/day) 3.00E-08 30.00 75.00 71.80 1.40 LADC pot (mg/L) 1.54E-06 30.00 75.00 NA NA

REMARKS:4/30/2012 Page 81 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 21 RELEASE ACTIVITY: Max LADD
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): N/A μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 1.88E-04 μg/m 3 Max 24 Hour Average Air Concentration (Stack): N/A μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 1.38E-08 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 7.52E-08 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) N/A N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 82 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 83 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:22 Number of Release Sites: Release Activity: Max ADR Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 84 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 22 Number of Site s: RELEASE ACTIVITY: Max ADR SIC-CODE DESCRIPTION: POTW (Indust., incl udes POTWs which receive ind. disch.) SIC-CODE (S): Subset of 49 52 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 288.00 123.84 78.18 66.05 3.47 8.07 12.79 15.14
ALL 10 39.60 13.29 7.76 7.57 25.25 75.24 128.87 132.10

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 7.42E-08 5.40E-07 mg/kg/day 1.00E-09 7.31E-09 mg/kg/day
LADC pot 3.81E-06 2.77E-05 mg/L 1.20E-05 8.74E-05 mg/kg
Acute
ADR pot 6.75E-04 6.29E-03 mg/kg/day 1.97E-05 1.43E-04 mg/kg/day

SIC Code Comments:4/30/2012 Page 85 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 22 RELEASE ACTIVITY: Max ADR
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): 0.00 μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concen tration (Stack): 1.89 μg/m 3 Max 24 Hour Average Air Concentration (Stack): 3440.00 μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 1.39E-04 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 7.56E-04 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) 0.63 N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 86 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 87 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:23 Number of Release Sites: Release Activity: Max LADD Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 88 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 23 Number of Site s: RELEASE ACTIVITY: Max LADD SIC-CODE DESCRIPTION: POTW (Indust., incl udes POTWs which receive ind. disch.) SIC-CODE (S): Subset of 49 52 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 288.00 123.84 78.18 66.05 N/A N/A N/A N/A
ALL 10 39.60 13.29 7.76 7.57 N/A N/A N/A N/A

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 7.42E-08 5.40E-07 mg/kg/day 1.00E-09 7.31E-09 mg/kg/day
LADC pot 3.81E-06 2.77E-05 mg/L 1.20E-05 8.74E-05 mg/kg
Acute
ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Code Comments:4/30/2012 Page 89 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES
SCENARIO #: 23 ACTIVITY: Max LADD
RELEASE DESCRIPTION:
EXPOSED POPULATION: Adult

NUMBER OF SITES NON-SLUDGE LANDFILL RELEASE AND DAYS OF RELEASE (kg/site/day)/(days) LANDFILLED SLUDGE 1 AND DAYS OF RELEASE (kg/site/day)/(days) MIGRATION DESCRIPTOR 2 ADSORPTION TO WASTEWATER SLUDGE (%) DRINKING WATER TREATMENT (%)

0.00 0.00

1 Landfilled sludge equals the fraction adsorbed to wastewater treatment sludge times the surface water pre-treatment release.

2 Migration Descriptor Log Koc Groundwater Concentration (GWC) (mg/L per kg release) Negligible no migration None Negligible to slow > 4.5 3.21E-6 Slow <4.5 to 3.5 2.67E-5 Moderate <3.5 to 2.5 5.95E-5 Rapid <2.5 7.55E-5

Exposure Units Results ASSUMPTIONS ED (years) AT (years) BW (kg) IR (L/day) Cancer LADD pot (mg/kg/day) 3.01E-04 30.00 75.00 71.80 1.40 LADC pot (mg/L) 1.54E-02 30.00 75.00 NA NA

REMARKS:4/30/2012 Page 90 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 23 RELEASE ACTIVITY: Max LADD
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): N/A μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concen tration (Stack): 1.89 μg/m 3 Max 24 Hour Average Air Concentration (Stack): N/A μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 1.39E-04 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 7.56E-04 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) N/A N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 91 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 92 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:24 Number of Release Sites: Release Activity: Max ADR Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 93 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 24 Number of Site s: RELEASE ACTIVITY: Max ADR SIC-CODE DESCRIPTION: POTW (Indust., incl udes POTWs which receive ind. disch.) SIC-CODE (S): Subset of 49 52 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 288.00 123.84 78.18 66.05 5.56 12.92 20.47 24.22
ALL 10 39.60 13.29 7.76 7.57 40.40 120.39 206.19 211.36

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 1.19E-07 8.63E-07 mg/kg/day 1.61E-09 1.17E-08 mg/kg/day
LADC pot 6.09E-06 4.43E-05 mg/L 1.92E-05 1.40E-04 mg/kg
Acute
ADR pot 1.08E-03 1.01E-02 mg/kg/day 3.15E-05 2.29E-04 mg/kg/day

SIC Code Comments:4/30/2012 Page 94 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 24 RELEASE ACTIVITY: Max ADR
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): 0.00 μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concen tration (Stack): 2.96 μg/m 3 Max 24 Hour Average Air Concentration (Stack): 5400.00 μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 2.18E-04 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 1.18E-03 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) 0.99 N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 95 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 96 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:1 Number of Release Sites: Release Activity: Max LADD Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 97 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 1 Number of Site s: RELEASE ACTIVITY: Max LADD SIC-CODE DESCRIPTION: POTW (Indust., incl udes POTWs which receive ind. disch.) SIC-CODE (S): Subset of 49 52 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 288.00 123.84 78.18 66.05 N/A N/A N/A N/A
ALL 10 39.60 13.29 7.76 7.57 N/A N/A N/A N/A

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 1.19E-07 8.63E-07 mg/kg/day 1.61E-09 1.17E-08 mg/kg/day
LADC pot 6.09E-06 4.43E-05 mg/L 1.92E-05 1.40E-04 mg/kg
Acute
ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Code Comments:4/30/2012 Page 98 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES
SCENARIO #: 1 ACTIVITY: Max LADD
RELEASE DESCRIPTION:
EXPOSED POPULATION: Adult

NUMBER OF SITES NON-SLUDGE LANDFILL RELEASE AND DAYS OF RELEASE (kg/site/day)/(days) LANDFILLED SLUDGE 1 AND DAYS OF RELEASE (kg/site/day)/(days) MIGRATION DESCRIPTOR 2 ADSORPTION TO WASTEWATER SLUDGE (%) DRINKING WATER TREATMENT (%)

0.00 0.00

1 Landfilled sludge equals the fraction adsorbed to wastewater treatment sludge times the surface water pre-treatment release.

2 Migration Descriptor Log Koc Groundwater Concentration (GWC) (mg/L per kg release) Negligible no migration None Negligible to slow > 4.5 3.21E-6 Slow <4.5 to 3.5 2.67E-5 Moderate <3.5 to 2.5 5.95E-5 Rapid <2.5 7.55E-5

Exposure Units Results ASSUMPTIONS ED (years) AT (years) BW (kg) IR (L/day) Cancer LADD pot (mg/kg/day) 4.72E-04 30.00 75.00 71.80 1.40 LADC pot (mg/L) 2.42E-02 30.00 75.00 NA NA

REMARKS:4/30/2012 Page 99 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 1 RELEASE ACTIVITY: Max LADD
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): N/A μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concen tration (Stack): 2.96 μg/m 3 Max 24 Hour Average Air Concentration (Stack): N/A μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 2.18E-04 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 1.18E-03 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) N/A N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 100 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 101 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:2 Number of Release Sites: Release Activity: Max ADR Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 102 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 2 Number of Site s: RELEASE ACTIVITY: Max ADR
SIC-CODE DESCRIPTION: POTW's (All facilities) SIC-CODE (S): 4952 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 125.56 44.02 26.80 22.53 0.41 1.16 1.90 2.26
ALL 10 11.11 1.94 1.06 0.96 4.59 26.29 48.11 53.13

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 8.68E-09 9.81E-08 mg/kg/day 1.18E-10 1.33E-09 mg/kg/day
LADC pot 4.45E-07 5.03E-06 mg/L 1.41E-06 1.59E-05 mg/kg
Acute
ADR pot 9.68E-05 2.20E-03 mg/kg/day 2.31E-06 2.61E-05 mg/kg/day

SIC Code Comments:4/30/2012 Page 103 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 2 RELEASE ACTIVITY: Max ADR
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): 0.00 μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 6.46E-03 μg/m 3 Max 24 Hour Average Air Concentration (Stack): 11.80 μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 4.75E-07 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 2.58E-06 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) 2.17E-03 N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 104 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m4/30/2012 Page 105 of 109

STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P-11-0484 Assessor:
ENVIRONMENTAL RELEASES
Scenario#:3 Number of Release Sites: Release Activity: Max LADD Release Description: WATER LANDFILL Non-sludge/Sludge STACK FUGITIVE

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge Release Days/yr:
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks:4/30/2012 Page 106 of 109

STANDARD REVIEW EXPOSURE REPORT
Chemical ID: P-11-0484

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES
SCENARIO #: 3 Number of Site s: RELEASE ACTIVITY: Max LADD
SIC-CODE DESCRIPTION: POTW's (All facilities) SIC-CODE (S): 4952 EXPOSED POPULATION: Adult

WWT REMOVAL (%) RELEASE DAYS PRETREATMENT RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT (%) BCF (L/kg) 0.00 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 125.56 44.02 26.80 22.53 N/A N/A N/A N/A
ALL 10 11.11 1.94 1.06 0.96 N/A N/A N/A N/A

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 8.68E-09 9.81E-08 mg/kg/day 1.18E-10 1.33E-09 mg/kg/day
LADC pot 4.45E-07 5.03E-06 mg/L 1.41E-06 1.59E-05 mg/kg
Acute
ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Code Comments:4/30/2012 Page 107 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES
SCENARIO #: 3 ACTIVITY: Max LADD
RELEASE DESCRIPTION:
EXPOSED POPULATION: Adult

NUMBER OF SITES NON-SLUDGE LANDFILL RELEASE AND DAYS OF RELEASE (kg/site/day)/(days) LANDFILLED SLUDGE 1 AND DAYS OF RELEASE (kg/site/day)/(days) MIGRATION DESCRIPTOR 2 ADSORPTION TO WASTEWATER SLUDGE (%) DRINKING WATER TREATMENT (%)

0.00 0.00

1 Landfilled sludge equals the fraction adsorbed to wastewater treatment sludge times the surface water pre-treatment release.

2 Migration Descriptor Log Koc Groundwater Concentration (GWC) (mg/L per kg release) Negligible no migration None Negligible to slow > 4.5 3.21E-6 Slow <4.5 to 3.5 2.67E-5 Moderate <3.5 to 2.5 5.95E-5 Rapid <2.5 7.55E-5

Exposure Units Results ASSUMPTIONS ED (years) AT (years) BW (kg) IR (L/day) Cancer LADD pot (mg/kg/day) 1.03E-06 30.00 75.00 71.80 1.40 LADC pot (mg/L) 5.29E-05 30.00 75.00 NA NA

REMARKS:4/30/2012 Page 108 of 109

STANDARD REVIEW EXPOSURE REPORT Chemical ID: P-11-0484
INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)
SCENARIO #: 3 RELEASE ACTIVITY: Max LADD
RELEASE DESCRIPTION:
METHOD OF CALCULATION: Screen3
EXPOSED POPULATION: Adult

Number of Sites: Per Site Fugitive Release: kg/site/day Fugitive Release Days per Year: days % Removal via Fugitive Release: % Total Fugitive Release: kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μg/m 3

Max 24 Hour Average Air Concentration(Fugitive): N/A μg/m 3

Per Site Stack Release: kg/site/day Stack Release Days per Year: days
% Removal via Stack Release: %
Total Stack Release: kg/yr Max Annual Average Air Concentr ation (Stack): 6.46E-03 μg/m 3 Max 24 Hour Average Air Concentration (Stack): N/A μg/m 3

Exposure Units Results (Stack) Results (Fugitive) ASSUMPTIONS
ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)
Cancer
LADD pot (mg/kg/day) 4.75E-07 N/A 30.00 75.00 71.80 0.55
LADC pot (mg/m 3 ) 2.58E-06 N/A 30.00 75.00 NA NA
Acute
ADR pot

(mg/kg/day) N/A N/A NA 1 day 71.80 0.55

Inhalation Comments:4/30/2012 Page 109 of 109

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: N/A
Inside Stack Diameter: 0.10 m Length of Release Opening: N/A

Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: N/A

Stack Gas Temperature: 293.00 K

Meteorological and Terrain Information:
Surrounding Land Use: Rural Terrain Height: 0.00 m
Distance to Residence of Interest: 100.00 m Meteorological Class: Full Stability Class: NA Wind Speed: NA

Downwash Information:
Facility Length: NA m Facility Width: NA m Facility Height: NA m