### June 24, 2009 FINAL Page of

INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P090411 Reviewer: Kwon

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=? 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 μ g/l # Days mg/kg/day mg/kg/day mg/kg/day mg/kg/day mg/kg/day

1 Exposure scenario titles consist of release activ ity followed by exposure calculation 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 Exposure calculations are Acute Dose Rate (ADR), Lifetim e 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 This column displays concentration values for the 7Q10 streamflow, which is defined as the average streamflow of the 7 consecutive days of lowest fl ow within a 10 year period.

Remarks:



### Fate test recommendations?: (default is NA)

### June 24, 2009 FINAL Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P090411 Assessor:

ENVIRONMENTAL RELEASES

Scenario#:1 Number of Release Sites:

Release Activity:

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:

### June 24, 2009 FINAL Page of

INITIAL EXPOSURE REVIEW REPORT
Chemical ID: P090411

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)

SCENARIO #: 1 RELEASE ACTIVITY:

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): μg/m 3

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

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

ASSUMPTIONS

Exposure Units Results (Stack) Results (Fugitive) ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)

Cancer

LADD pot (mg/kg/day)

LADC pot (mg/m 3 )

Acute

ADR pot (mg/kg/day)

Inhalation Comments:

### June 24, 2009 FINAL 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 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

### June 24, 2009 FINAL Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P090411 Assessor:

ENVIRONMENTAL RELEASES

Scenario#:2 Number of Release Sites:

Release Activity:

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:

### June 24, 2009 FINAL Page of

INITIAL EXPOSURE REVIEW REPORT
Chemical ID: P090411

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)

SCENARIO #: 2 RELEASE ACTIVITY:

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): μg/m 3

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

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

ASSUMPTIONS

Exposure Units Results (Stack) Results (Fugitive) ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)

Cancer

LADD pot (mg/kg/day)

LADC pot (mg/m 3 )

Acute

ADR pot (mg/kg/day)

Inhalation Comments:

### June 24, 2009 FINAL 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 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

### June 24, 2009 FINAL Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P090411 Assessor:

ENVIRONMENTAL RELEASES

Scenario#:3 Number of Release Sites:.

Release Activity:

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:

### June 24, 2009 FINAL Page of

INITIAL EXPOSURE REVIEW REPORT
Chemical ID: P090411

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)

SCENARIO #: 3 RELEASE ACTIVITY:

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): μg/m 3

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

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

ASSUMPTIONS

Exposure Units Results (Stack) Results (Fugitive) ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)

Cancer

LADD pot (mg/kg/day)

LADC pot (mg/m 3 )

Inhalation Comments:

### June 24, 2009 FINAL 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 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

### June 24, 2009 FINAL Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P090411 Assessor:

ENVIRONMENTAL RELEASES

Scenario#:4 Number of Release Sites:

Release Activity:

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:

### June 24, 2009 FINAL Page of

INITIAL EXPOSURE REVIEW REPORT
Chemical ID: P090411

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)

SCENARIO #: 4 RELEASE ACTIVITY:

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): μg/m 3

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

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

ASSUMPTIONS

Exposure Units Results (Stack) Results (Fugitive) ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)

Cancer

LADD pot (mg/kg/day)

LADC pot (mg/m 3 )

Acute

ADR pot (mg/kg/day)

Inhalation Comments:

### June 24, 2009 FINAL 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 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

### June 24, 2009 FINAL Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P090411 Assessor:

ENVIRONMENTAL RELEASES

Scenario#:5 Number of Release Sites:

Release Activity:

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:

### June 24, 2009 FINAL Page of

INITIAL EXPOSURE REVIEW REPORT
Chemical ID: P090411

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES

SCENARIO #: 5 ACTIVITY:

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 (%)

1 Landfilled sludge equals the fraction adsorbed to wastewat er 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

ASSUMPTIONS Exposure Units Results ED (years) AT (years) BW (kg) IR (L/day)

Cancer

LADD pot (mg/kg/day)

LADC pot (mg/L)

REMARKS:

### June 24, 2009 FINAL Page of

INITIAL EXPOSURE REVIEW REPORT
Chemical ID: P090411

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)

SCENARIO #: 5 RELEASE ACTIVITY:

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): μg/m 3

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

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

ASSUMPTIONS

Exposure Units Results (Stack) Results (Fugitive) ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)

Cancer

LADD pot (mg/kg/day)

LADC pot (mg/m 3 )

Inhalation Comments:

### June 24, 2009 FINAL 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 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

### June 24, 2009 FINAL Page of



## LEGEND FOR NEW CHEMICAL S EXPOSURE REPORT

This new chemicals exposure report was prepared by the Exposure Assessment Branch (EAB) of the Economics, Exposure and Technolog y Division, Office of Pollution Pr evention and Toxics, USEPA.

The goals of these reports are to calculate conservative (protective) estimates of exposure endpoints for consumers, the general populat ion, and the environment.

For each exposure scenario to industrial releases , the following three endpoints are calculated: (1) maximum possible acute concentrations and doses (2) maximum possible chronic c oncentrations and doses (3) for water releases ≥ 20 days, the probability of exceedence of the aquatic concentration of concern These endpoints are identifie d by abbreviations on the Release Activity line, e.g., (1) max ADR , (2) max LADD , (3) max PDM . Depending on the release inputs, these endpoints may be calcu lated and presented on the same page or different pages. That is, a releas e activity ID of mfg; max ADR, max PDM, max
LADD indicates that all the exposure endpoints were calculated from comm on manufacturing release values; conversely, a re lease activity ID of mfg &proc; max ADR indicates that only the maximum acute exposure values were calculated for manufacturing and pr ocessing releases that occu rred at the same site.

For each consumer product use exposure scenario, whether exposure is to the user di rectly or to the general population/environment, the maximum exposure valu es are calculated and presented together.

In addition to the exposure values above, EPA policy dire cts that exposure and releas e values be compared to criteria threshold values for Exposur e-based and PBT Exposure-based cases.

Exposure-based (YX) cases (those with ≥ 100,000 kg/yr production volume) Criteria are exceeded under the following conditions: Presence in consumer product with likely exposure

≥ 3E-3 mg/kg/d exposure via air, fish ingestion or drinking water

≥ 10,000 kg/yr release to environment (post-treatment)

≥ 1,000 kg/yr release to water (post-treatment)

Persistent, Bioaccumulative, Toxic (PBT) chemicals of P2B2 rating or higher and production volume ≥ 20,000 kg/yr Criteria are exceeded as for YX cases, with the following differences:

≥ 2,000 kg/yr release to environment (post-treatment)

≥ 200 kg/yr release to water (post-treatment)

Bolding rules in the Report: Values for endpoints above that are also health or eco concerns are bolded.