5/13/2015 Page of



### INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P -15-0435 Reviewer: Wong/BC

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

Exposure Scenario 1 Water Landfill St ack Air Fugitive Air

Release activity(ies) 2 ;

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

CC =200 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

Max ADR: max

acute eco 1.56E

- 02

--- --- --- 6.49E+02

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

Max LADD

--- 1.65E

- 05

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

Max ADR:

max acute eco 3.46E

- 02

--- --- --- 1.52E+03

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

Max

LADD --- 4.45E

- 05

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

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 Avera ge 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 stream flow, which is defined as the average daily streamflow

of the seven consecutive days of lowest flow within a ten year period.

Remarks :5/13/2015 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0435 Assessor: Wong/BC

ENVIRONMENTAL RELEASES

S cenario#: 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/Sludg e

Release Days/yr:

Per Site Release:

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

Remarks:5/13/2015 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0435

SI TE

- SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER: 1 RELEASE ACTIVITY: Max ADR

FACILITY NAME:

FACILITY LOCATION:

RECEIVING WATER NAME:

REACH NUMBER: FACILITY ON REACH: DISCHARGE TYPE:

NPDES PERMIT #: 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

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT

FLOW (MLD)

CONCENTRATION (μg/L) 156.65 410.84 648.97 789.18 NA

DRINKING WATER INGESTION AND FISH INGESTION EXPOSURE EST IMATES

Exposure Units Drinking Water

Results Drinking Water

Units Fish Ingestion

Results Fish Ingestion

Units

Cancer

LADD pot 1.65E

- 05 mg/kg/day 0.00 mg/kg/day

LADC pot 1.27E

- 03 mg/L 0.00 mg/kg

Acute

ADR pot 1.56E

- 02 mg/kg/day 0.00 mg/kg/day

Surfa ce Water Comments:5/13/2015 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0435 Assessor: Wong/BC

ENVIRONMENTAL RELEASES

Scenario#: 2 Number of Release Sites:

Release Activity: Max LADD

Release Description: WATER LAND FILL

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:5/13/2015 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0435

SI TE

- SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER: 2 RELEASE ACTIVITY: Max LADD

FACILITY NAME:

FACILITY LOCATION:

RECEIVING WATER NAME:

REACH NUMBER: FACILITY ON REACH: DISCHARGE TYPE:

NPDES PERMIT #: EXPOSED POPULATION: Adult

WWT

REMOVAL

(%) RELEASE

DAYS PRETR EATMENT

RELEASE

(kg/site/day) POSTTREATMENT

RELEASE

(kg/site/day) DWT

(%) BCF

(L/kg)

0.00 0.00

AQUATIC EXPOSURE ESTIMATES

- SURFACE WATER

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT

FLOW (MLD)

CONCENTRATION (μg/L) N/A N/A N/A N/A NA

DRINKING WATER INGESTION AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water

Results Drinking Water

Units Fish Ingestion

Results Fish Ingestion

Units

Cancer

LADD pot 1 .65E

- 05 mg/kg/day 0.00 mg/kg/day

LADC pot 1.27E

- 03 mg/L 0.00 mg/kg

Acute

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

Surface Water Comments:5/13/2015 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0435 Assessor: Wong/BC

ENVIRONMENTAL RELEASES

Scena rio#: 3 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/Sludg e

Release Days/yr:

Per Site Release:

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

Remarks:5/13/2015 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0435

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 3 Number of Sites: RELEASE

ACTIVITY: : Max

ADR

SIC

- CODE DESCRIPTION:

SIC

- CODE (S): EXPOSED POPULATION: Adult

WWT

REMOVAL

(%) RELEASE

DAYS PRETREAT MENT

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

M ean 30Q5 7Q10 1Q10 Harmonic

Mean 30Q5 7Q10 1Q10

ALL 50 253.45 914.80 1522.81 1832.01

ALL 10 253.45 914.80 1522.81 1832.01

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Dri nking Water Results Drinking

Water Units Fish Ingestion Results Fish

Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 7.64E

- 06 7.64E

- 06 mg/kg/day 0.00 0.00 mg/kg/day

LADC pot 5.88E

- 04 5.88E

- 04 mg/L 0.00 0.00 mg/kg

Acute

ADR pot 3.46E

- 02 3.46E

- 02 m g/kg/day 0.00 0.00 mg/kg/day

SIC Code Comments:5/13/2015 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0435 Assessor: Wong/BC

ENVIRONMENTAL RELEASES

Scenario#: 4 Number of Release Sites:

Release Activity: Max LA DD

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:5/13/2015 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0435

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 4 Number of Sites: RELEASE

ACTIVITY: : 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

TYPE % 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%

Canc er

LADD pot 4.45E

- 05 4.45E

- 05 mg/kg/day 0.00 0.00 mg/kg/day

LADC pot 3.42E

- 03 3.42E

- 03 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: