12/5/2012 Page 1 of 7



### INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P -13-0108 Reviewer: Tobias/BC

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

Exposure

Scenario 1 Water Landf ill Stack Air Fugitive Air

Drinking Water Fish Ingestion

ADR LADD ADR LADD 7Q10 4

CC =

1 PDM

Days

Exceeded 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 --- --- --- --- --- --- --- 3.40E

- 01

--- --- ---

Ma x LADD --- --- --- --- --- --- --- --- 2.50E

- 02

--- ---

1 Exposure scenario titles consist of release activity followed by exposure calcu lation abbreviation.

2 Release activities are from engineering report's Manufacturing (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 Ex posure calculations are Acute Dose Rate (ADR), Lifetime Average Daily Dose (LADD), and Probabilistic

Dilution Model (PDM). There may be one, two, or all three exposure calculations per exposure scenario.

CC is the aquatic concentration of concern.

4 Thi s column displays concentration values for the 7Q10 streamflow, which is defined as the average daily

streamflow of the seven consecutive days of lowest flow within a ten year period.

Remarks:



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

Parameter Exp Based Persistent Exceedance Value

Drinking (Surface) Water Dose (mg/kg/day) NA No

Fish Ingestion Dose (mg/kg/day) NA No

Inhalation Dose (mg/kg/day) NA

Groundwater Dose (mg/kg/day) NA No

Surface Water Release After Tr eatment (kg/yr) NA No

Total Release After Treatment (kg/yr) NA

Consumer Use? No



### Fate test recommendations?: (default is NA)12/5/2012 Page 2 of 7

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0108 Assessor: Tobias/BC

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:12/5/2012 Page 3 of 7

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0108

INHALATION EXPOSURE ESTIMATES (POST

- TREATMENT)

SCENARIO #: 1 RELEASE ACTIVITY: Max ADR

RELEASE DESCRIPTION:

METHOD OF CALCULATION: Screen3

EXPOSED POPULATION: Adult

Number of Sites:

Per Site Fugitive Release: kg/site/day

Fugiti ve Release Days per Year: days

% Removal via Fugitive Release: %

Total Fugitive Release: kg/yr

Max Annual Average Air Concentration

(Fugitive): 0.00 μ g/m 3

Max 24 Hour Average Air

Concentration(Fugitive): 0.00 μ g/m 3

Per Site Stack Release: k g/site/day

Stack Release Days per Year: days

% Removal via Stack Release: %

Total Stack Release: kg/ yr

Max Annual Average Air Concentration (Stack): 340.00 μ g/m 3

Max 24 Hour Average Air Concentration (Stack): 1840.00 μ g/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) 2.50E

- 02 N/A 30.00 75.00 71.80 0.55

LADC pot (mg/m 3 ) 0.14 N/A 30.00 75.00 NA NA

Acute

ADR pot (mg/kg/da y) 0.34 N/A NA 1 day 71.80 0.55

Inhalation Comments:12/5/2012 Page 4 of 7

Stack Parameter Data Fugitive Parameter Data

Stack Height 10.00 m Release Height: N/A

Inside Stack

Diameter: 0.10 m Length of Rel ease

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 Intere st: 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 m12/5/2012 Page 5 of 7

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0108 Assess or: Tobias/BC

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:12/5/2012 Page 6 of 7

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0108

INHALATION EXPOSURE ESTIMATES (POST

- TREATMENT)

SCENARIO #: 2 RELEASE ACTIVITY: Max LADD

RELEASE DESCRIPTION:

METHOD OF CALCULATION: Screen3

EXPOSED POPULATION: Adult

Number of Sites:

Per Sit e 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 μ g/m 3

Max 24 Hour Average Air

Concentration(Fugitive): N/A μ g/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 Concentration (Stack): 340.00 μ g/m 3

Max 24 Hour Average Air Concentration (Stack): N/A μ g/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) 2.50E

- 02 N/A 30.00 75.00 71.80 0.55

LADC pot (mg/m 3 ) 0.14 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:12/5/2012 Page 7 of 7

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: 0.0 0 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