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### INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P -15-0136 Reviewer: Kwon/SD

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

Exposure Scenario 1 Water Landfill Stac k Air Fugitive Air

Release activity(ies) 2 ;

exposure c alculation(s) 3 Drinking Water Fish Ingestion 7Q10 4

CC = 1000 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

PROC: Max ADR 3.43E

- 03

--- --- --- --- --- --- --- --- --- ---

PROC: Max LADD

--- 1.70E

- 04

--- --- --- --- --- --- --- --- ---

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 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), 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 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) Wa ter 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) No NA

Total Release After Treatment (kg/yr) No NA

Consumer Use?

Fate test recommendations?: (default is NA)1/14/2015 Page 2 of 16

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0136 Assessor: Kwon/SD

ENVIRONMENTAL RELEASES

Scenario#: 1 Number of Release Sites:

Release Activity: PROC: Max ADR

Rele ase 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:1/14/2015 Page 3 of 16

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0136

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 1 Number of Sites: RELEASE ACTIVITY: PROC:

Max ADR

SIC

- CODE DESCRIPTION:

SIC

- CODE (S): EXPOSED POPULATION: Adult

WWT

REMOVAL

(%) RELEASE

DAYS PRETREATMENT

RELEASE

(kg/site/day) POSTTREATMENT

RELEASE

(kg/site/day) DWT

(%) BCF

(L/kg)

0.00 0.00

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 5.17 14.77 25.03 28.31

ALL 10 45.20 90.52 205.97 182.44

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 1.95E

- 05 1.70E

- 04 mg/kg/day 0.00 0.00 mg/kg/day

LADC pot 1.50E

- 03 1.31E

- 02 mg/L 0.00 0.00 mg/kg

Acute

ADR pot 5.59E

- 04 3.43E

- 03 mg/kg/day 0.00 0.00 mg/kg/day

SIC Code Comments:1/14/2015 Page 4 of 16

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P- 15

- 0136

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO # : 1 RELEASE ACTIVITY: PROC: Max ADR

SIC CODE DESCRIPTION:

ASSOCIATED SIC CODES:

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

1000.00 High1/14/2015 Page 5 of 16

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0136 Ass essor: Kwon/SD

ENVIRONMENTAL RELEASES

Scenario#: 2 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 Days/yr:

Per Site Release:

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

Remarks:1/14/2015 Page 6 of 16

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0136

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 2 Number of Sites: RELEASE ACTIVITY: PROC:

Max LADD

SIC

- CODE DESCRIPTION:

SIC

- CODE (S): EXPOSED POPULATION: Adult

WWT

REMOVAL

(%) RELEASE

DAYS PRETREATMENT

RELEASE

(kg/site/day) POSTTREATMENT

RELEASE

(kg/site/day) DWT

(%) BCF

(L/kg)

0.00 0.00

AQUATIC EXPOSURE ESTIMATES

- SURFACE WATER

PLANT

T YPE % ILE

FACILITY STREAM FLOW (MLD) STREAM CONC. (μg/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic

Mean 30Q5 7Q10 1Q10

ALL 50 N/A N/A N/A N/A

ALL 10 N/A N/A N/A N/A

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 1.95E

- 05 1.70E

- 04 mg/kg/day 0.00 0.00 mg/kg/day

LADC pot 1.50E

- 03 1.31E

- 02 mg/L 0.00 0.00 mg/kg

Acute

ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

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