1/9/13 page of 

### STANDARD REVIEW EXPOSURE REPORT **This assessment is based on Standard Review Draft, dated 12/20/2012. Chemical ID: P** **- 13**  **- 0109**  **Reviewer: Kwon/SS**

**Results Table: Dose, Concentration, and Days Exceeded Results Summary** Exposure Scenario 1 Water Landf ill Stack Air Fugitive Air Release activity(ies) 2 ; exposure calculation(s) 3 Drinking Water Fish Ingestion 7Q10 4 CC=1 PDM

Days Exceeded LADD ADR LADD ADR LADD ADR LADD ADR LADD 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 MFG: Max ADR, max acute eco **0.36 ---**  **1.42 ---**  **7393.72 ---**  **--- 0.50**  **--- ---**  **---** MFG: Max LADD **--- 1.69E**  **- 05**  **--- 7.24E**  **- 05**  **--- ---**  **1.15E -**  **04 ---**  **2.06E -**  **04 ---**  **---** PROC: Max ADR, max acute eco **4.21E -**  **02 ---**  **0.30 ---**  **863.40**

**--- ---**  **9.74E**   ** 02** **--- ---**  **---** PROC: Max LADD **--- 3.62E**  **- 06**  **--- 1.55E**  **- 05**  **--- ---**  **1.54E -**  **04 ---**  **3.83E -**  **04 ---**  **---** USE1: Max ADR, PDM1 **6.84E -**  **03 ---**  **2.91E**   ** 02** **--- 145.45**  **213 ---**  **--- ---**  **3.31E -**  **02 ---**  USE1: PDM2 **--- ---**  **--- ---**  **109.85 233**  **- --**  **--- ---**  **--- ---**  USE1: Max LADD **--- 8.32E**  **- 05**  **--- 3.56E**  **- 04**  **--- ---**  **5.37E -**  **04 ---**  **1.71E -**  **03 ---**  **7.07E -**  **04** USE2: Max ADR, max acute eco **0.22 ---**  **1.58 ---**  **4500.31 ---**  **--- 0.41**  **--- ---**  **---** USE2: PDM **--- ---**  **--- ---**  **376.60 250**  **--- ---**  **--- ---**  **---** USE2: Max LADD **--- 4.12E**  **- 04**  **--- 1.76E**  **- 03**  **--- ---**  **1.62E -**  **03 ---**  **9.71E -**  **04 ---**  **---**

Exposure Based Criteria Parameter Exp Based Persistent Exceedance Value Drinking (Surface) Water Dose (mg/kg/day) No NA Fish Ingestion Dose (mg/kg/day) No NA Inhalation Dose (mg/kg/day) No NA Groundwater Dose (mg/kg/day) No NA Surface Water Release After Treatment (kg/yr) Yes NA **6573** Total Release After Treatment (kg/yr) Yes NA **242,074** Consumer Use? Yes NA1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 Assessor: ENVIRONMENTAL RELEASES Scenario#: 1 Number of Release Sites: 1. Release Activity: MFG: Max ADR, max acute eco Release Description: WATER LANDFILL Non- sludge/Sludge STACK FUGITIVE Total Releases: 400.00 0.00 407.20 0.00 (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non- sludge/Sludge Release Days/yr: 1.00 0.00/0.00 1.00 0.00 Per Site Release: 400.00 0.00/0.00 407.20 0.00 (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) Remarks:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 SIC - CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES SCENARIO #: 1 Number of Sites: 1 RELEASE ACTIVITY: MFG: Max ADR, max acute eco SIC - CODE DESCRIPTION: Organic Chemicals Manufacture SIC - CODE (S): 2865,2869 EXPOSED POPULATION: Adult WWT REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT

(%) BCF

(L/kg) 90.00 1. 400. 40.00 0.00 1000.00

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

Harmonic Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10 ALL 50 2825.61 935.49 634.16 514.20 14.16 42.76 63.08 77.79 ALL 10 50.57 9.38 5.41 4.53 790.98 4264. 39 7393.72 8830.02

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 3.02E - 07 1.69E - 05 mg/kg/day 1.30E - 06 7.24E - 05 mg/kg/day LADCpot 1.55E - 05 8.67E - 04 mg/L 1.55E - 02 0.87 mg/kg Acute ADR pot 3.57E - 03 0.36 mg/kg/day 2.54E - 02 1.42 mg/kg/day SIC Code Comments:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109INHALATION EXPOSURE ESTIMATES (POST - TREAT MENT) SCENARIO #: 1 RELEASE ACTIVITY: MFG: Max ADR, max acute eco RELEASE DESCRIPTION: METHOD OF CALCULATION: Screen3 EXPOSED POPULATION: Adult Number of Sites: 1. Per Site Fugitive Release: NA kg/site/day Fugitive Release Days per Year: NA days % Removal via Fugitive Release: 0.00 % Total Fugitive Release: NA kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μ g/m3 Max 24 Hour Average Air Concentration(Fugitive): 0.00 μ g/m3 Per Site Stack Release: 407.20 kg/site/day Stack Release Days per Year: 1.00 days % Removal via Stack Release: 0.00 % Total Stack Release: 407.20 kg/yr Max Annual Average Air Concentration (Stack): 1.50 μ g/m3 Max 24 Hour Average Air Concentration (Stack): 2740.00 μ g/m3

Exposure Units Results (Stack) Results

(Fugitive) ASSUMPTIONS

ED (years) AT

(years) BW

(kg) Inh. Rate

(m3 /hr) Cancer LADD pot (mg/kg/day) 1.10E - 04 N/A 30.00 75.00 71.80 0.55 LADCpot (mg/m3 ) 6.00E - 04 N/A 30.00 75.00 NA NA Acute ADR pot (mg/kg/day) 0.50 N/A NA 1 day 71.80 0.55 Inhalation Comments:1/9/13 page of

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 G as Exit Velocity: 0.10 m/sec Width of Release Opening: N/A Stack Gas Tem perature: 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 m1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 Assessor: ENVIRONMENTAL RELEAS ES Scenario#: 2 Number of Release Sites: 1. Release Activity: MFG: Max LADD Release Description: WATER LANDFILL Non- sludge/Sludge STACK FUGITIVE Total Releases: 400.00 550.00 760.00 0.00 (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non- sludge/Sludge Release Days/yr: 1.00 1.00/0.00 1.00 0.00 Per Site Release: 400.00 550.00/0.00 760.00 0.00 (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) Remarks:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 SIC - CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES SCENARIO #: 2 Number of Sites: 1 RELEASE ACTIVITY: MFG: Max LADD SIC - CODE DESCRIPTION: Organic Chemicals Manufacture SIC - CODE (S): 2865,2869 EXPOSED POPULATION: Adult WWT REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT

(%) BCF

(L/kg) 90.00 1. 400. 40.00 0.00 1000.00

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

Harmonic Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10 ALL 50 2825.61 935.49 634.16 514.20 14.16 42.76 63.08 77.79 ALL 10 50.57 9.38 5.41 4.53 790.98 4264.39 7393.72 8830.02

DRINKING WATER AND FISH INGESTION EXPOSURE ES TIMATES Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion Units 50% 10% 50% 10%

Cancer LADD pot 3.02E - 07 1.69E - 05 mg/kg/day 1.30E - 06 7.24E - 05 mg/kg/day LADCpot 1.55E - 05 8.67E - 04 mg/L 1.55E - 02 0.87 mg/kg Acute ADR pot 3.57E - 03 0.36 mg/kg/day 2.54E - 02 1.42 mg/kg/day SIC Code Comments:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID: P - 13 - 0109

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES SCENARIO #: 2 ACTIVITY: MFG: Max LADD RELEASE D ESCRIPTION: 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

DESCRIPTOR2 ADSORPTION TO WASTEWATER SLUDGE (%) DRINKING

WATER TREATMENT (%) 1. 550.00/1.00 0.00/0.00 Slow 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) 1.15E - 04 30.00 75.00 71.80 1.40 LADCpot (mg/L) 5.87E - 03 30.00 75.00 NA NA REMARKS:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109INHALATION EXPOSURE ESTIMATES (POST - TREATMENT) SCENARIO #: 2 RELEASE ACTIVITY: MFG: Max LADD RELEASE DESCRIPTION: METHOD OF CALCULATION: Screen3 EXPOSED POPULATION: Adult Number of Sites: 1. Per Site Fugitive Release: NA kg/site/day Fugitive Release Days per Year: NA days % Removal via Fugitive Release: 0.00 % Total Fugitive Release: NA kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μ g/m3 Max 24 Hour Average Air Concentration(Fugitive): 0.00 μ g/m3 Per Site Stack Release: 760.00 kg/site/day Stack Release Days per Year: 1.00 days % Removal via Stack Release: 0.00 % Total Stack Release: 760.00 kg/yr Max Annual Average Air Concentration (Stack): 2.80 μ g/m3 Max 2 4 Hour Average Air Concentration (Stack): 5120.00 μ g/m3

Exposure Units Results (Stack) Results

(Fugitive) ASSUMPTIONS

ED (years) AT

(years) BW

(kg) Inh. Rate

(m3 /hr) Cancer LADD pot (mg/kg/day) 2.06E - 04 N/A 30.00 75.00 71.80 0.55 LADCpot (mg/m3 ) 1.12E - 03 N/A 30.00 75.00 NA NA Acute ADR pot (mg/kg/day) 0.94 N/A NA 1 day 71.80 0.55 Inhalation Comments:1/9/13 page of

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 Tem perature: 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 m1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 Assessor: ENVIRONMENTAL RELEASES Scenario#: 3 Number of Release Sites: 6. Release Activity: PROC: Max ADR, max acute eco Release Description: WATER LANDFILL Non- sludge/Sludge STACK FUGITIVE Total Releases: 402.00 0.00 469.20 0.00 (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non- sludge/Sludge Release Days/yr: 1.00 0.00/0.00 1.00 0.00 Per Site Release: 67.00 0.00/0.00 78.20 0.00 (kg/site/day) (kg/site/day) (kg/ site/day) (kg/site/day) Remarks:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 SIC - CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES SCENARIO #: 3 Number of Sites: 6 RELEASE ACTIVITY: PROC: Max ADR, max acute eco SIC - CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disch.) SIC - CODE (S): Subset of 4952 EXPOSED POPULATION: Adult WWT REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT

(%) BCF

(L/kg) 90.00 1. 67. 6.70 0.00 1000.00

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

Harmonic Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10 ALL 50 288.00 123.84 78.18 66.05 23.26 54.10 85.70 101.44 ALL 10 39.60 13.29 7.76 7.57 169.19 504.14 863.40 885.07

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 4.97E - 07 3.62E - 06 mg/kg/day 2.13E - 06 1.55E - 05 mg/kg/day LADCpot 2.55E - 05 1.85E - 04 mg/L 2.55E - 02 0.19 mg/kg Acute ADR pot 4.52E - 03 4.21E - 02 mg/kg/day 4.18E - 02 0.30 mg/kg/day SIC Code Comments:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109INHALATION EXPOSURE ESTIMATES (POST - TREATMENT) SCENARIO #: 3 RELEASE ACTIVITY: PROC: Max ADR, max acute ec o RELEASE DESCRIPTION: METHOD OF CALCULATION: Screen3 EXPOSED POPULATION: Adult Number of Sites: 6. Per Site Fugitive Release: NA kg/site/day Fugitive Release Days per Year: NA days % Removal via Fugitive Release: 0.00 % Total Fugitive Release: NA kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μ g/m3 Max 24 Hour Average Air Concentration(Fugitive): 0.00 μ g/m3 Per Site Stack Release: 78.20 kg/site/day Stack Release Days per Year: 1.00 days % Removal via Stack Release: 0. 00 % Total Stack Release: 469.20 kg/yr Max Annual Average Air Concentration (Stack): 0.29 μ g/m3 Max 24 Hour Average Air Concentration (Stack): 530.00 μ g/m3

Exposure Units Results (Stack) Results

(Fugitive) ASSUMPTIONS

ED (years) AT

(years) BW

(kg) Inh. Rate

(m3 /hr) Cancer LADD pot (mg/kg/day) 2.13E - 05 N/A 30.00 75.00 71.80 0.55 LADCpot (mg/m3 ) 1.16E - 04 N/A 30.00 75.00 NA NA Acute ADR pot (mg/kg/day) 9.74E - 02 N/A NA 1 day 71.80 0.55 Inhalation Comments:1/9/13 page of

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 Tem perature: 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 m1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 Assessor: ENVIRONMENTAL RELEASES Scenario#: 4 Number of Release Sites: 6. Release Activity: PROC: Max LADD Release Description: WATER LANDFILL Non- sludge/Sludge STACK FUGITIVE Total Releases: 402.00 4434.00 8466.00 0.00 (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non- sludge/Sludge Release Days/yr: 1.00 1.0 0/0.00 1.00 0.00 Per Site Release: 67.00 739.00/0.00 1411.00 0.00 (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) Remarks:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 SIC - CODE BASED HUMAN AND AQUATIC EXPOSURES T O SURFACE WATER RELEASES SCENARIO #: 4 Number of Sites: 6 RELEASE ACTIVITY: PROC: Max LADD SIC - CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disch.) SIC - CODE (S): Subset of 4952 EXPOSED POPULATION: Adult WWT REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT

(%) BCF

(L/kg) 90.00 1. 67. 6.70 0.00 1000.00

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

Harmonic Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10 ALL 50 288.00 123.84 78.18 66.05 23.26 54.10 85.70 101.44 ALL 10 39.60 13.29 7.76 7.57 169.19 504.14 863.40 885.07

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 4.97E - 07 3.62E - 06 mg/kg/day 2.13E - 06 1.55E - 05 mg/kg/day LADCpot 2.55E - 05 1.85E - 04 mg/L 2.55E - 02 0.19 mg/kg Acute ADR pot 4 .52E - 03 4.21E - 02 mg/kg/day 4.18E - 02 0.30 mg/kg/day SIC Code Comments:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID: P - 13 - 0109

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES SCENARIO #: 4 ACTIVITY: PROC: Max LADD RELEASE DESCRIPTION: EXP OSED 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

DESCRIPTOR2 ADSORPTION TO WASTEWATER SLUDGE (%) DRINKING

WATER TREATMENT (%) 6. 739.00/1.00 0.00/0.00 Slow 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 Rapi d <2.5 7.55E - 5

Exposure Units Results ASSUMPTIONS ED (years) AT

(years) BW

(kg) IR

(L/day) Cancer LADD pot (mg/kg/day) 1.54E - 04 30.00 75.00 71.80 1.40 LADCpot (mg/L) 7.89E - 03 30.00 75.00 NA NA REMARKS:1/9/13 page of STANDARD REVI EW EXPOSURE REPORT Chemical ID : P - 13 - 0109INHALATION EXPOSURE ESTIMATES (POST - TREATMENT) SCENARIO #: 4 RELEASE ACTIVITY: PROC: Max LADD RELEASE DESCRIPTION: METHOD OF CALCULATION: Screen3 EXPOSED POPULATION: Adult Number of Sites: 6. Per Site Fugitive Release: NA kg/site/day Fugitive Release Days per Year: NA days % Removal via Fugitive Release: 0.00 % Total Fugitive Release: NA kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μ g/m3 Max 24 Hour Average Air Concentration(Fugitive): 0.00 μ g/m3 Per Site Stack Release: 1411.00 kg/site/day Stack Release Days per Year: 1.00 days % Removal via Stack Release: 0.00 % Total Stack Release: 8466.00 kg/yr Max Annual Average Air Concentration (Stack): 5.21 μ g/m3 Max 24 Hour Average Air Concentration (Stack): 9500.00 μ g/m3

Exposure Units Results (Stack) Results

(Fugitive) ASSUMPTIONS

ED (years) AT

(years) BW

(kg) Inh. Rate

(m3 /hr) Cancer LADD pot (mg/kg/day) 3.83E - 04 N/A 30.00 75.00 71.80 0.55 LADCpot (mg/m3 ) 2.08E - 03 N/A 30.00 75.00 NA NA Acute ADR pot (mg/kg/day) 1.75 N/A NA 1 day 71.80 0.55 Inhalation Comments:1/9/13 page of

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 Tem perature: 293.00 K

Meteorological and Terrain Information: Surrounding Land Use: Rural Terrain Hei ght: 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 m1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 Assessor: ENVIRONMENTAL RELEASES Scenario#: 5 Number of Release Sites: 29. Release Activity: USE1: Max ADR, PDM1 Release Description: WATER LANDFILL Non- sludge/Sludge STACK FUGITIVE Total Rele ases: 2.46E+04 0.00 0.00 9311.90 (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non- sludge/Sludge Release Days/yr: 221.00 0.00/0.00 0.00 247.00 Per Site Release: 3.84 0.00/0.00 0.00 1.30 (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) Remarks:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 SIC - CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES SCENARIO #: 5 Number of Sites: 29 RELEASE ACTIVITY: USE1: Max ADR, PDM1 SIC - CODE DESCRIPTION: Metal Finishing SIC - CODE (S): 34xx - 39xx EXPOSED POPULATION: Adult WWT REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT

(%) BCF

(L/kg) 90.00 221. 3.84 0.38 0.00 1000.00

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

Harmonic Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10 ALL 50 300.46 107.45 67.50 55.59 1.28 3.57 5.69 6.91 ALL 10 23.74 4.69 2.64 2.27 16.18 81.88 145.45 169.16

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 6.04E - 06 7.64E - 05 mg/kg/day 2.59E - 05 3.27E - 04 mg/kg/day LADCpot 3.10E - 04 3.92E - 03 mg/L 0.31 3.92 mg/kg Acute ADR pot 2.99E - 04 6.84E - 03 mg/kg/day 2.30E - 03 2.91E - 02 mg/kg/day SIC Code Comments:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 SIC CODE EXPOSURES TO SURFACE WATER RELEASES SCENARIO # : 5 RELEASE ACTIVITY: USE1: Max ADR, PDM1 SIC CODE DESCRIPTION: Metal Finishing ASSOCIATED SIC CODES: 34xx - 39xx SIC CODE RESULTS COC (μg/L) Percent of

Year COC Exceeded Number of

Days COC Exceeded Release

days/year Loading

(kg/site/day) Waste Water

Treatment (%) High/Avg

Analysis 1 .00 58 213 221.00 3.84 90.00 High1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109INHALATION EXPOSURE ESTIMATES (POST - TREATMENT) SCENARIO #: 5 RELEASE ACTIVITY: USE1: Max ADR, PDM1 RELEASE DESCRIPTION: METHOD OF CALCULATION: Screen3 EXPOSED POPULAT ION: Adult Number of Sites: 29. Per Site Fugitive Release: 1.30 kg/site/day Fugitive Release Days per Year: 247.00 days % Removal via Fugitive Release: 0.00 % Total Fugitive Release: 9311.90 kg/yr Max Annual Average Air Concentration (Fugitive): 9.62 μ g/m3 Max 24 Hour Average Air Concentration(Fugitive): 180.00 μ g/m3 Per Site Stack Release: NA kg/site/day Stack Release Days per Year: NA days % Removal via Stack Release: 0.00 % Total Stack Release: NA kg/yr Max Annual Average Air Concentration (Stack): 0.00 μ g/m3 Max 24 Hour Average Air Concentration (Stack): 0.00 μ g/m3

Exposure Units Results (Stack) Results

(Fugitive) ASSUMPTIONS

ED (years) AT

(years) BW

(kg) Inh. Rate

(m3 /hr) Cancer LADD pot (mg/kg/day) N/A 7.07E - 04 30.00 75.00 71.80 0.55 LADCpot (mg/m3 ) N/A 3.85E - 03 30.00 75.00 NA NA Acute ADR pot (mg/kg/day) N/A 3.31E - 02 NA 1 day 71.80 0.55 Inhalation Comments:1/9/13 page of

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 Release Height: 3.00 m Inside Stack Diameter: 0.10 Length of Release Opening: 10.00 m Stack Gas Exit Velocity: 0.10 Width of Release Opening: 10.00 m Stack Gas Tem perature: 293.00

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 F acility Height: NA m1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 Assessor: ENVIRONMENTAL RELEASES Scenario#: 6 Number of Release Sites: 29. Release Activity: USE1: PDM2 Release Description: WATER LANDFILL Non- sludge/Sludge STACK FUGITIVE Total Releases: 2.08E+04 0.00 0.00 0.00 (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non- sludge/Sludge Release Days/yr: 247.00 0.00/0.00 0.00 0.00 Per Site Release: 2.90 0.00/0.00 0.00 0.00 (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) Remarks:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 SIC - CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES SCENARIO #: 6 Number of Sites: 29 RELEASE ACTIVITY: USE1: PDM2 SIC - CODE DESCRIPTION: Metal Finishing SIC - CODE (S): 34xx - 39xx EXPOSED POPULATION: Adult WWT REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT

(%) BCF

(L/kg) 90.00 247. 2.9 0 .29 0.00 1000.00

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

Harmonic Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10 ALL 50 300.46 107.45 67.50 55.59 0.97 2.70 4.30 5.22 ALL 10 23.74 4.69 2.64 2.27 12.22 61.83 109.85 127.75

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 5.09E - 06 6.45E - 05 mg/kg/day 2.18E - 05 2.76E - 04 mg/kg/day LADCpot 2.61E - 04 3.31E - 03 mg/L 0.26 3.31 mg/kg Acute ADR pot 2.26E - 04 5.17E - 03 mg/kg/day 1.73E - 03 2.19E - 02 mg/kg/day SIC Code Comments:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 SIC CODE EXPOSURES TO SURFACE WATER RELEASES SCENARIO # : 6 RELEASE ACTIVITY: USE1: PDM2 SIC COD E DESCRIPTION: Metal Finishing ASSOCIATED SIC CODES: 34xx - 39xx SIC CODE RESULTS COC (μg/L) Percent of

Year COC Exceeded Number of

Days COC Exceeded Release

days/year Loading

(kg/site/day) Waste Water

Treatment (%) High/Avg

Analysis 1 .00 64 233 247.0 0 2.90 90.00 High1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 Assessor: ENVIRONMENTAL RELEASES Scenario#: 7 Number of Release Sites: 29. Release Activity: USE1: Max LADD Release Description: WATER LANDFILL Non- sludge/Sludge STACK FUGITIVE Total Releases: 2.68E+04 7.48E+04 1.82E+05 9311.90 (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non- sludge/Sludge Release Days/yr: 1.00 1.00/0.00 1.00 1.00 Per Site Release: 924.04 2578.94/0.00 6283.94 32 1.10 (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) Remarks:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 SIC - CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES SCENARIO #: 7 Number of Sites: 29 RELEASE ACTIVITY: USE1: Max LADD SIC - CODE DESCRIPTION: Metal Finishing SIC - CODE (S): 34xx - 39xx EXPOSED POPULATION: Adult WWT REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT

(%) BCF

(L/kg) 90.00 1. 924.04 92.40 0.00 1000.00

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

Harmonic Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10 ALL 50 300.46 107.45 67.50 55.59 3 07.54 859.97 1368.95 1662.24 ALL 10 23.74 4.69 2.64 2.27 3892.33 1.97E+04 3.50E+04 4.07E+04

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 6.57E - 06 8.32E - 05 mg/kg/day 2.82E - 05 3.56E - 04 mg/kg/day LADCpot 3.37E - 04 4.27E - 03 mg/L 0.34 4.27 mg/kg Acute ADR pot 7.19E - 02 1.65 mg/kg/day 0.55 6.99 mg/kg/day SIC Code Comments:1/9/13 page of STANDARD REVIEW EXPOSURE REPO RT Chemical ID: P - 13 - 0109

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES SCENARIO #: 7 ACTIVITY: USE1: 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

DESCRIPTOR2 ADSORPTION TO WASTEWATER SLUDGE (%) DRINKING

WATER TREATMENT (%) 29. 2578.94/1.00 0.00/0.00 Slow 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) 5.37E - 04 30.00 75.00 71.80 1.40 LADCpot (mg/L) 2.75E - 02 30.00 75.00 NA NA REMARKS:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109INHALATION EXPOSURE ESTIMATES (POST - TREATMENT) SCENARIO #: 7 RELEASE ACTIVITY: USE1: Max LADD RELEASE DESCRIPTION: METHOD OF CALCULATION: Screen3 EXPOSED POPULATION: Adult Number of Sites: 29. Per Site Fugitive Release: 321.10 kg/site/day Fugitive Release Days per Year: 1.00 days % Removal via Fugitive Release: 0.00 % Total Fugitive Release: 9311.90 kg/yr Max Annual Average Air Concentration (Fugitive): 9.62 μ g/m3 Max 24 Hour Average Air Concentration(Fugitive): 4.39E+04 μ g/m3 Per Site Stack Release: 6283.94 kg/site/day Stack Release Days per Year: 1.00 days % Removal via Stack Release: 0.00 % Total Stack Release: 1.82E+05 kg/yr Max Annual Average Air Concentration (Stack): 23.20 μ g/m3 Max 24 Hour Average Air Concentration (Stack): 4.23E+04 μ g/m3

Exposure Units Results (Stack) Results

(Fugitive) ASSUMPTIONS

ED (years) AT

(years) BW

(kg) Inh. Rate

(m3 /hr) Cancer LADD pot (mg/kg/day) 1.71E - 03 7.07E - 04 30.00 75.00 71.80 0.55 LADCpot (mg/m3 ) 9.28E - 03 3.85E - 03 30.00 75.00 NA NA Acute ADR pot (mg/kg/day) 7.78 8.07 NA 1 day 71.80 0.55 Inhalation Comments:1/9/13 page of

Stack Parameter Data Fugitive Parameter Data Stack Height 10.00 m Release Height: 3.00 m Inside Stack Diameter: 0.10 m Length of Release Opening: 10.00 m Stack Gas Exit Velocity: 0.10 m/sec Width of Release Opening: 10.00 m Stack Gas Tem perature: 293.00 K

Meteorological and Terrain Information: Surrounding Land Use: Rural Terrain Height: 0.00 m Distance to Residence of Interest: 100.00 m Meteorolo gical Class: Full Stability Class: NA Wind Speed: NA Downwash Information: Facility Length: NA m Facility Width: NA m Facility Height: NA m1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 Assessor: ENVIRONMENTAL RELEASES Scenario#: 8 Number of Release Sites: 5. Release Activity: USE2: Max ADR, max acute eco Release Description: WATER LANDFILL Non- sludge/Sludge STACK FUGITIVE Total Releases: 1746.12 0.00 1665.32 0.00 (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non- sludge/Sludge Release Days/yr: 1.00 0.00/0.00 1.00 0.00 Per Site Release: 349.22 0.00/0.00 333.06 0.00 (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) Remarks:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 SIC - CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES SCENARIO #: 8 Number of Sites: 5 RELEASE ACTIVITY: USE2: Max ADR, max acute eco SIC - CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disch.) SIC - CODE (S): Subset of 4952 EXPOSED POPULATION: Adult WWT REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT

(%) BCF

(L/kg) 90.00 1. 349.22 34.92 0.00 1000.00

AQUATIC EXPOS URE ESTIMATES - SURFACE WATER PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. (μg/l)

Harmonic Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10 ALL 50 288.00 123.84 78.18 66.05 121.26 282.00 446.69 528.73 ALL 10 39.60 13.29 7.76 7.57 88 1.88 2627.72 4500.31 4613.26

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 2.59E - 06 1.88E - 05 mg/kg/day 1.11E - 05 8.08E - 05 mg/kg/day LADCpot 1.33E - 04 9.66E - 04 mg/L 0.13 0.97 mg/kg Acute ADR pot 2.36E - 02 0.22 mg/kg/day 0.22 1.58 mg/kg/day SIC Code Comments:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109INHALATION EXPOSURE ESTIMATES (POST - T REATMENT) SCENARIO #: 8 RELEASE ACTIVITY: USE2: Max ADR, max acute eco RELEASE DESCRIPTION: METHOD OF CALCULATION: Screen3 EXPOSED POPULATION: Adult Number of Sites: 5. Per Site Fugitive Release: NA kg/site/day Fugitive Release Days per Year: NA days % Removal via Fugitive Release: 0.00 % Total Fugitive Release: NA kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μ g/m3 Max 24 Hour Average Air Concentration(Fugitive): 0.00 μ g/m3 Per Site Stack Release: 333.06 kg/site/day S tack Release Days per Year: 1.00 days % Removal via Stack Release: 0.00 % Total Stack Release: 1665.32 kg/yr Max Annual Average Air Concentration (Stack): 1.23 μ g/m3 Max 24 Hour Average Air Concentration (Stack): 2240.00 μ g/m3

Exposure Units Results (Stack) Results

(Fugitive) ASSUMPTIONS

ED (years) AT

(years) BW

(kg) Inh. Rate

(m3 /hr) Cancer LADD pot (mg/kg/day) 9.05E - 05 N/A 30.00 75.00 71.80 0.55 LADCpot (mg/m3 ) 4.92E - 04 N/A 30.00 75.00 NA NA Acute ADR pot (mg/kg/day) 0.41 N/A NA 1 day 71 .80 0.55 Inhalation Comments:1/9/13 page of

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 Tem perature: 293.00 K

Meteorological and Terrain Information: Surrounding Land Use: Rural Terrain Height: 0.00 m Distance to Residence of Interest: 100.00 m Meteorolo gical Class: Full Stability Class: NA Wind Speed: NA Downwash Information: Facility Length: NA m Facility Width: NA m Facility Height: NA m1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 Assessor: ENVIRONMENTAL RELEASES Scenario#: 9 Number of Release Sites: 5. Release Activity: USE2: PDM Release Description: WATER LANDFILL Non- sludge/Sludge STACK FUGITIVE Total Releases: 3.65E+04 0.00 0.00 0.00 (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non- sludge/Sludge Release Days/yr: 250.00 0.00/0.00 0.00 0.00 Per Site Release: 29.22 0.00/0.00 0.00 0.00 (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) Remarks:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 SIC - CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES SCENARIO #: 9 Number of Sites: 5 RELEASE ACTIVITY: USE2: PDM SIC - CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disch.) SIC - CODE (S): Subset of 4952 EXPO SED POPULATION: Adult WWT REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT

(%) BCF

(L/kg) 90.00 250. 29.22 2.92 0.00 1000.00

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

Harmonic Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10 ALL 50 288.00 123.84 78.18 66.05 10.15 23.60 37.38 44.25 ALL 10 39.60 13.29 7.76 7.57 73.80 219.89 376.60 386.05

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATE S Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion Units 50% 10% 50% 10%

Cancer LADD pot 5.42E - 05 3.94E - 04 mg/kg/day 2.32E - 04 1.69E - 03 mg/kg/day LADCpot 2.78E - 03 2.02E - 02 mg/L 2.78 20.22 mg/kg Acute ADR pot 1.97E - 03 1.84E - 02 mg/kg/day 1.82E - 02 0.13 mg/kg/day SIC Code Comments:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 SIC CODE EXPOSURES TO SURFACE WATER RELEASES SCENARIO # : 9 RELEASE ACTIVITY: USE2: PDM SIC C ODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disch.) ASSOCIATED SIC CODES: Subset of 4952 SIC CODE RESULTS COC (μg/L) Percent of

Year COC Exceeded Number of

Days COC Exceeded Release

days/year Loading

(kg/site/day) Waste Water

Treatment (%) High/Avg

Analysis 1 .00 68 250 250.00 29.22 90.00 High1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 Assessor: ENVIRONMENTAL RELEASES Scenario#: 10 Number of Release Sites: 5. Release Activity: USE2: M ax LADD Release Description: WATER LANDFILL Non- sludge/Sludge STACK FUGITIVE Total Releases: 3.81E+04 3.88E+04 1.79E+04 0.00 (kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non- sludge/Sludge Release Days/yr: 1.00 1.00/0.00 1.00 0.00 Per Site Release: 7626.00 7761.00/0.00 3586.00 0.00 (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) Remarks:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109 SIC - CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RE LEASES SCENARIO #: 10 Number of Sites: 5 RELEASE ACTIVITY: USE2: Max LADD SIC - CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disch.) SIC - CODE (S): Subset of 4952 EXPOSED POPULATION: Adult WWT REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT RELEASE (kg/site/day) DWT

(%) BCF

(L/kg) 90.00 1. 7626. 762.60 0.00 1000.00

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

Harmonic M ean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10 ALL 50 288.00 123.84 78.18 66.05 2647.92 6157.95 9754.41 1.15E+04 ALL 10 39.60 13.29 7.76 7.57 1.93E+04 5.74E+04 9.83E+04 1.01E+05

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 5.66E - 05 4.12E - 04 mg/kg/day 2.42E - 04 1.76E - 03 mg/kg/day LADCpot 2.90E - 03 2.11E - 02 mg/L 2.90 21.10 mg/kg Acute ADR pot 0.5 1 4.80 mg/kg/day 4.76 34.60 mg/kg/day SIC Code Comments:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID: P - 13 - 0109

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES SCENARIO #: 10 ACTIVITY: USE2: Max LADD RELEASE DESCRIPTION: EXPOSED POPULAT ION: 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

DESCRIPTOR2 ADSORPTION TO WASTEWATER SLUDGE (%) DRINKING

WATER TREATMENT (%) 5. 7761.00/1.00 0.00/0.00 Slow 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) 1.62E - 03 30.00 75.00 71.80 1.40 LADCpot (mg/L) 8.29E - 02 30.00 75.00 NA NA REMARKS:1/9/13 page of STANDARD REVIEW EXPOSURE REPORT Chemical ID : P - 13 - 0109INHALATION EXPOSURE ESTIMATES (POST - TREATMENT) SCENARIO #: 10 RELEASE ACTIVITY: USE2: Max LADD RELEASE DESCRIPTION: METHOD OF CALCULATION: Screen3 EXPOSED POPULATION: Adult Number of Sites: 5. Per Site Fugitive Release: NA kg/site/day Fugitive Release Days per Year: NA days % Removal via Fugitive Release: 0.00 % Total Fugitive Release: NA kg/yr Max Annual Average Air Concentration (Fugitive): 0.00 μ g/m3 Max 24 Hour Average Air Concentration(Fugitive): 0 .00 μ g/m3 Per Site Stack Release: 3586.00 kg/site/day Stack Release Days per Year: 1.00 days % Removal via Stack Release: 0.00 % Total Stack Release: 1.79E+04 kg/yr Max Annual Average Air Concentration (Stack): 13.20 μ g/m3 Max 24 Hour Average Air Concentration (Stack): 2.42E+04 μ g/m3

Exposure Units Results (Stack) Results

(Fugitive) ASSUMPTIONS

ED (years) AT

(years) BW

(kg) Inh. Rate

(m3 /hr) Cancer LADD pot (mg/kg/day) 9.71E - 04 N/A 30.00 75.00 71.80 0.55 LADCpot (mg/m3 ) 5.28E - 03 N/A 30.00 75.00 NA NA Acute ADR pot (mg/kg/day) 4.44 N/A NA 1 day 71.80 0.55 Inhalation Comments:1/9/13 page of

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 Tem perature: 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