2/25/11 page of



### INITIAL REVIEW EXPOSURE REPORT (IRExR) Chemical ID: P-11-0162 Reviewer: Delpire/JB

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 = 20 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

Mfg: max acute eco Mfg: PDM1 Proc: max acute eco Proc: PDM1 Proc: PDM2

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.
Remarks:2/25/11 page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-11-0162 Assessor: Delpire/JB
ENVIRONMENTAL RELEASES
Scenario#:1 Number of Release Sites Release Activity: Mfg: 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:2/25/11 page of

INITIAL REVIEW EX POSURE REPORT
Chemical ID: P-11-01622/25/11 page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-11-0162 Assessor: Delpire/JB
ENVIRONMENTAL RELEASES
Scenario#:2 Number of Release Sites: Release Activity: Mfg: 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:2/25/11 page of

INITIAL REVIEW EX POSURE REPORT
Chemical ID: P-11-01622/25/11 page of

INITIAL REVIEW EX POSURE REPORT
Chemical ID: P-11-01622/25/11 page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-11-0162 Assessor: Delpire/JB
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)

Remarks:2/25/11 page of

INITIAL REVIEW EX POSURE REPORT
Chemical ID: P-11-01622/25/11 page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-11-0162 Assessor: Delpire/JB
ENVIRONMENTAL RELEASES
Scenario#:4 Number of Release Sites: Release Activity: Proc: 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)

Re m arks:2/25/11 page of

INITIAL REVIEW EX POSURE REPORT
Chemical ID: P-11-01622/25/11 page of

INITIAL REVIEW EX POSURE REPORT
Chemical ID: P-11-01622/25/11 page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-11-0162 Assessor: Delpire/JB
ENVIRONMENTAL RELEASES
Scenario#:5 Number of Release Sites Release Activity: Proc: PDM2 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)

Rem ark s:2/25/11 page of

INITIAL REVIEW EX POSURE REPORT
Chemical ID: P-11-01622/25/11 page of

INITIAL REVIEW EX POSURE REPORT
Chemical ID: P-11-0162