12/6/2013 Page 1 of 5



### INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P -14-0091C Reviewer: Wong/BC

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

Exposure

Scenario 1 Water Landfi ll Stack Air Fugitive Air

Drinking Water Fish Ingestion

ADR LADD ADR LADD 7Q10 4

CC =

53 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 : max

acute eco 3.45E

- 04

--- --- --- 7.55E+00

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

Max

LADD --- 1.54E

- 08

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

1 Exposure scenario titles consist of release activity followed by exposure cal culation 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 T his 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) 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? No



### Fate test recommendations?: (default is NA)12/6/2013 Page 2 of 5

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 0091 Assessor: Wong/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:12/6/2013 Page 3 of 5

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 0091

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

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

ADR

SIC

- CODE DESCRIPTION: POTW's (All facilities)

SIC

- CODE (S): 4952 EXPOSED POPULATION: Adult

WWT

REMOVAL

(%) RELEASE

DAYS PRETREATMENT

RELE ASE

(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 50 125.56 44.02 26.80 22.53 6.37E

- 02 0.18 0.30 0.36

ALL 10 11.11 1.94 1.06 0.96 0.72 4.12 7.55 8.33

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Expos ure Units Drinking Water Results Drinking

Water Units Fish Ingestion Results Fish

Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 1.36E

- 09 1.54E

- 08 mg/kg/day 0.00 0.00 mg/kg/day

LADC pot 6.98E

- 08 7.89E

- 07 mg/L 0.00 0.00 mg/kg

Acute

ADR pot 1.52E

- 05 3.45E

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

SIC Code Comments:12/6/2013 Page 4 of 5

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 0091 Assessor: Wong/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:12/6/2013 Page 5 of 5

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 14

- 0091

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 2 N umber of Sites: RELEASE ACTIVITY: Max

LADD

SIC

- CODE DESCRIPTION: POTW's (All facilities)

SIC

- CODE (S): 4952 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 50 125.56 44.02 26.80 22.53 N/A N/A N/A N/A

ALL 10 11.11 1.94 1.06 0.96 N/A N/A N/A N/A

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Dr inking Water Results Drinking

Water Units Fish Ingestion Results Fish

Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 1.36E

- 09 1.54E

- 08 mg/kg/day 0.00 0.00 mg/kg/day

LADC pot 6.98E

- 08 7.89E

- 07 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

SIC Code Comments: