12/27/2013 Page 1 of 25



### INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P -14- 0042 Reviewer: Flessner/SD

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

Exposure

Scenario 1 Water Lan dfill Stack Air Fugitive Air

Drinking Water Fish Ingestion

ADR LADD ADR LADD 7Q10 4

CC =

1000 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/da y mg/kg/day mg/kg/day mg/kg/day

MFG: Max

ADR

MFG: Max

LADD

PROC: Max

ADR

PROC: Max

LADD

USE : Max

ADR

USE : Max

LADD

USE : Max

ADR

USE : Max

LADD

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

2 Release activities are from engineering report's Manufacturing (Mfg), Processing (Proc) and Use release activity

la bels. Multiple release activities are combined in one exposure scenario if their releases occur at same location.

3 Exposure 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 This column displays concentration values for the 7Q10 streamflow, which is defined as the average daily

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

Remarks:12/27/2013 Page 2 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 0042 Assessor: Flessner/SD

ENVIRONMENTAL RELEASES

Scenario#: 1 Number of Release Sites:

.

Release Activity: MFG: Max AD R

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)

Re m arks:12/27/2013 Page 3 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 004212/27/2013 Page 4 of 2512/27/2013 Page 5 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 0042 Assessor: Flessner/SD

ENVIRONMENTAL RELEASES

Scenario#: 2 Number of Release Sites:

Release Activity: MFG: 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)

Re m arks:12/27/2013 Page 6 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 004212/27/2013 Page 7 of 2512/27/2013 Page 8 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 0042 Assessor: Flessner/SD

ENVIRONMENTAL RELEASES

Scenario#: 3 Number of Release Sites:

Release Activity: PROC: 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)

Re m arks:12/27/2013 Page 9 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 004212/27/2013 Page 10 of 2512/27/2013 Page 11 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 0042 Assessor: Flessner/SD

ENVIRONMENTAL RELEASES

Scenario#: 4 Number of Release Sites:

Release Activity: PROC: 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 D ays/yr:

Per Site Release:

(kg/site/day) (kg/site/day ) (kg/site/day) (kg/site/day)

Re m arks:12/27/2013 Page 12 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 004212/27/2013 Page 13 of 2512/27/2013 Page 14 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 0042 Assessor: Flessner/SD

ENVIRONMENTAL RELEASES

Sce nario#: 5 Number of Release Sites:

Release Activity: USE : 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)

Re m arks:12/27/2013 Page 15 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 004212/27/2013 Page 16 of 2512/27/2013 Page 17 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 0042 Assessor: Flessner/SD

ENVIRONME NTAL RELEASES

Scenario#: 6 Number of Release Sites:

.

Release Activity: USE : 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)

Re m arks:12/27/2013 Page 18 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 004212/27/2013 Page 19 of 2512/27/2013 Page 20 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 0042 Assessor: Flessner/S D

ENVIRONMENTAL RELEASES

Scenario#: 7 Number of Release Sites:

Release Activity: USE : 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)

Re m arks:12/27/2013 Page 21 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 004212/27/2013 Page 22 of 2512/27/2013 Page 23 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 0042 Assessor: Flessner/SD

ENVIRONMENTAL RELEASES

Scenario#: 8 Number of Release Sites:

Release Activity: USE : 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)

Re m arks:12/27/2013 Page 24 of 25

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 004212/27/2013 Page 25 of 25