1/14/2015 Page 1 of 21



### INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P -15-0154 Reviewer: Kwon/SD

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 = 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

Max ADR

--- --- --- --- --- --- --- 8.97E

- 02

--- --- ---

Max LADD

--- --- --- --- --- --- --- --- 4.43E

- 03

--- ---

Max ADR: max

acute eco 2.00E

- 03

--- --- --- 9.05E+01

--- --- 9.59E

- 03

--- --- ---

PDM1

--- --- --- --- 9.05E+01

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

PDM2

--- --- --- --- 1.47E+01

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

Max LADD

--- 7.02E

- 06

--- --- --- --- --- --- 8.21E

- 05

--- ---

1 Exposure scenario titles consist of release ac tivity 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 a quatic 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: Expo sure Based (XB)/Persistent (P2B2) Criteria

Parameter Exp Based Persistent Exceedance Value

Drinking (Surface) Water Dose (mg/kg/day) No No

Fish Ingestion Dose (mg/kg/day) No No

Inhalation Dose (mg/kg/day) Yes Yes 4.43E

- 03

Groundwater Dose (mg/kg/day ) No No

Surface Water Release After Treatment (kg/yr) No No

Total Release After Treatment (kg/yr) Yes

Consumer Use? No

Fate test recommendations?: (default is NA)1/14/2015 Page 2 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0154 Assessor: Kwon/SD

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/y r) (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 21

INITIAL REVIEW EXPOSURE R EPORT

Chemical ID : P- 15

- 0154

INHALATION EXPOSURE ESTIMATES (POST

- TREATMENT)

SCENARIO #: 1 RELEASE ACTIVITY: Max ADR

RELEASE DESCRIPTION:

METHOD OF CALCULATION: Screen3

EXPOSED POPULATION: Adult

Number of Sites:

Per Site Fugitive Release: kg/site/day

Fugitive Release Days per Year: days

% Removal via Fugitive Release: %

Total Fugitive Release: kg/yr

Max Annual Average Air Concentration

(Fugitive): 0.00 μ g/m 3

Max 24 Hour Average Air

Concentration(Fugitive): 0.00 μ g/m 3

Per Site Stack Release: kg/site/day

Stack Release Days per Year: days

% Removal via Stack Release: %

Total Stack Release: kg/yr

Max Annual Average Air Concentration (Stack): 57.20 μ g/m 3

Max 24 Hour Average Air Concen tration (Stack): 490.00 μ g/m 3

Exposure Units Results

(Stack) Results

(Fugitive) ASSUMPTIONS

ED

(years) AT

(years) BW

(kg) Inh. Rate

(m 3 /hr)

Cancer

LADD pot (mg/kg/day) 4.43E

- 03 N/A 33.00 78.00 80.00 0.61

LADC pot (mg/m 3 ) 2.42E

- 02 N/A 33.00 78.0 0 NA NA

Acute

ADR pot (mg/kg/day) 8.97E

- 02 N/A NA 1 day 80.00 0.61

Inhalation Comments:1/14/2015 Page 4 of 21

Stack Parameter Data Fugitive Parameter Data

Stack Height 10.00 m Release Height: N/A

Inside Stack

Diameter: 0.10 m Length of Release

Opening: N/A

Stack Gas Exit

Velocity: 0.10 m/sec Width of Release

Opening: N/A

Stack Gas

Temperature: 293.00 K

Meteorological and Terrain Information:

Surrounding Land Use: Rural

Terrain Height: 0.0 0 m

Distance to Residence of Interest: 100.00 m

Meteorological Class: Full

Stability Class: NA

Wind Speed: NA

Downwash Information:

Facility Length: NA m

Facility Width: NA m

Facility Height: NA m1/14/2015 Page 5 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0154 Assessor: Kwon/SD

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:1/14/2015 Page 6 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0154

INHALATION EXPOSURE ESTIMATES (POST

- TREATMENT)

SCENARIO #: 2 RELEASE ACTIVITY: Max LADD

RELEASE DESCRIPTION:

METHOD OF CALCULATION: Screen3

EXPOSED POPULATION: Adult

Number of Sites:

Per Site Fugitive Release: kg/site/day

Fugitive Release Days per Year: days

% Removal via Fugitive Release: %

Total Fugitive Release: kg/yr

Max Annual Average Air Concentration

(Fugitive): 0.00 μ g/m 3

Max 24 Hour Average Air

Concentration(Fugitive): N/A μ g/m 3

Per Site Stack Release: kg/site/day

Stack Release Days per Year: days

% Removal via Stack Release: %

Total Stack Release: kg/yr

Max Annual Average Air Concentration (Stack): 57.20 μ g/m 3

Max 24 Hour Average Air Concentration (Stack): N/A μ g/m 3

Exposure Units Results

(Stack) Results

(Fugitive) ASSUMPTIONS

ED

(years) AT

(years) BW

(kg) Inh. Rate

(m 3 /hr)

Cancer

LADD pot (mg/kg/day) 4.43E

- 03 N/A 33.00 78.00 80.00 0.61

LADC pot (mg/ m 3 ) 2.42E

- 02 N/A 33.00 78.00 NA NA

Acute

ADR pot (mg/kg/day) N/A N/A NA 1 day 80.00 0.61

Inhalation Comments:1/14/2015 Page 7 of 21

Stack Parameter Data Fugitive Parameter Data

Stack Height 10.00 m Release Height: N/A

Inside Stack

Diameter: 0.10 m Length of Release

Opening: N/A

Stack Gas Exit

Velocity: 0.10 m/sec Width of Release

Opening: N/A

Stack Gas

Temperature: 293.00 K

Meteorological and Terrain Information:

Surrounding Land Use: Rural

Terrain Height: 0.00 m

Distance to Residence of Interest: 100.00 m

Meteorological Class: Full

Stability Class: NA

Wind Speed: NA

Downwash Information:

Facility Length: NA m

Facility Width: NA m

Facility Height: NA m1/14/2015 Page 8 of 21

INITIAL REV IEW EXPOSURE REPORT

Chemical ID : P- 15

- 0154 Assessor: Kwon/SD

ENVIRONMENTAL RELEASES

Scenario#: 3 Number of Release Sites:

.

Release Activity: Max ADR

Release Description: WATER LANDFILL

Non

- sludge/Sludge STACK FUGITIV E

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/s ite/day)

Remarks:1/14/2015 Page 9 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0154

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 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 4.19 9.84 15.86 19.20

ALL 10 13.85 52.89 90.46 108.19

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

LAD D pot 1.33E

- 06 4.38E

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

LADC pot 1.02E

- 04 3.37E

- 04 mg/L 0.00 0.00 mg/kg

Acute

ADR pot 3.73E

- 04 2.00E

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

SIC Code Comments:1/14/2015 Page 10 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0154

INHALATIO N EXPOSURE ESTIMATES (POST

- TREATMENT)

SCENARIO #: 3 RELEASE ACTIVITY: Max ADR

RELEASE DESCRIPTION:

METHOD OF CALCULATION: Screen3

EXPOSED POPULATION: Adult

Number of Sites:

Per Site Fugitive Release: kg/site/day

Fugitive Relea se Days per Year: days

% Removal via Fugitive Release: %

Total Fugitive Release: kg/yr

Max Annual Average Air Concentration

(Fugitive): 0.00 μ g/m 3

Max 24 Hour Average Air

Concentration(Fugitive): 0.00 μ g/m 3

Per Site Stack Release: kg /site/day

Stack Release Days per Year: days

% Removal via Stack Release: %

Total Stack Release: kg/yr

Max Annual Average Air Concentration (Stack): 0.60 μ g/m 3

Max 24 Hour Average Air Concentration (Stack): 52.40 μ g/m 3

Exposure U nits Results

(Stack) Results

(Fugitive) ASSUMPTIONS

ED

(years) AT

(years) BW

(kg) Inh. Rate

(m 3 /hr)

Cancer

LADD pot (mg/kg/day) 4.67E

- 05 N/A 33.00 78.00 80.00 0.61

LADC pot (mg/m 3 ) 2.55E

- 04 N/A 33.00 78.00 NA NA

Acute

ADR pot (mg/kg/day) 9.59E

- 03 N /A NA 1 day 80.00 0.61

Inhalation Comments:1/14/2015 Page 11 of 21

Stack Parameter Data Fugitive Parameter Data

Stack Height 10.00 m Release Height: N/A

Inside Stack

Diameter: 0.10 m Length of Release

Open ing: N/A

Stack Gas Exit

Velocity: 0.10 m/sec Width of Release

Opening: N/A

Stack Gas

Temperature: 293.00 K

Meteorological and Terrain Information:

Surrounding Land Use: Rural

Terrain Height: 0.00 m

Distance to Residence of Interest: 100.0 0 m

Meteorological Class: Full

Stability Class: NA

Wind Speed: NA

Downwash Information:

Facility Length: NA m

Facility Width: NA m

Facility Height: NA m1/14/2015 Page 12 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0154 Assessor: Kwon/ SD

ENVIRONMENTAL RELEASES

Scenario#: 4 Number of Release Sites:

Release Activity: PDM1

Release Description: WATER LANDFILL

Non

- sludge/Sludge STACK FUGITIVE

Total Releases:

(kg/yr) (kg/yr) (kg/yr) (kg/y r)

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 13 of 21

INITIAL REVIEW EXPOSURE REPORT

Che mical ID : P- 15

- 0154

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 4 Number of Sites: RELEASE ACTIVITY:

PDM1

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 4.19 9.84 15.86 19.20

ALL 10 13.85 52.89 90.46 108.19

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

E xposure Units Drinking Water Results Drinking

Water Units Fish Ingestion Results Fish

Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 1.33E

- 06 4.38E

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

LADC pot 1.02E

- 04 3.37E

- 04 mg/L 0.00 0.00 mg/kg

Acute

ADR pot 3.73E

- 04 2.00E

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

SIC Code Comments:1/14/2015 Page 14 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P- 15

- 0154

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO # : 4 RELEASE ACTIVITY: PDM1

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 15 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0154 Assessor: Kwon/SD

ENVIRONMENTAL RELEASES

Scenario#: 5 Number of Release Sites:

Release Activity: PDM2

Releas e 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 16 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0154

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 5 Number of Sites: RELEASE ACTIVITY:

PDM2

SIC

- CODE DESCRIPTION:

SIC

- CODE (S): EXPOSED POPULATION: Adult

WWT

REMOVAL

(%) RELEASE

DAYS PRETREATMENT

RELEASE

(kg/site/day) POSTTREATMENT

RELEA SE

(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 7Q1 0 1Q10

ALL 50 0.68 1.60 2.57 3.11

ALL 10 2.25 8.58 14.67 17.54

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking

Water Units Fish Ingestion Results Fi sh

Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 1.01E

- 06 3.35E

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

LADC pot 7.80E

- 05 2.58E

- 04 mg/L 0.00 0.00 mg/kg

Acute

ADR pot 6.04E

- 05 3.25E

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

SIC Code Comments:1/14/2015 Page 17 of 21

INITIAL REVIE W EXPOSURE REPORT

Chemical ID: P- 15

- 0154

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO # : 5 RELEASE ACTIVITY: PDM2

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 18 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0154 A ssessor: Kwon/SD

ENVIRONMENTAL RELEASES

Scenario#: 6 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:1/14/2015 Page 19 of 21

INITIAL REVIEW EXPOSURE R EPORT

Chemical ID : P- 15

- 0154

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 6 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 EXPOS URE 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%

Cancer

LADD pot 2.13E

- 06 7.02E

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

LADC pot 1.63E

- 04 5.40E

- 04 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:1/14/2015 Page 20 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0154

INHALATION EXPOSURE ESTIMATES (POST

- TREATMENT)

SCENARIO #: 6 RELEASE ACTIVITY: Max LADD

RELEASE DESCRIPTION:

METHOD OF CALCULATION: Screen3

EXPOSED POPULATION: Adult

Number of Sites:

Per Site Fugitive Release: kg/site/day

Fugitive Release Days per Year: days

% Removal via Fugitive Release: %

Total Fugitive Release: kg/yr

Max Annual Average Air Concentration

(Fugitive): 0.00 μ g/m 3

Max 24 Hour Average Air

Concentration(Fugitive): N/A μ g/m 3

Per Site Stack Release: kg/site/day

Stack Release Days per Year: days

% Removal via Stack Release: %

Total Stack Release: kg/yr

Max Annual Average Air Concentration (Stack): 1.06 μ g/m 3

Max 24 Hour Average Air Concentration (Stack): N/A μ g/m 3

Exposure Units Results

(Stack) Results

(Fugitive) ASSUMPTIONS

ED

(years) AT

( years) BW

(kg) Inh. Rate

(m 3 /hr)

Cancer

LADD pot (mg/kg/day) 8.21E

- 05 N/A 33.00 78.00 80.00 0.61

LADC pot (mg/m 3 ) 4.48E

- 04 N/A 33.00 78.00 NA NA

Acute

ADR pot (mg/kg/day) N/A N/A NA 1 day 80.00 0.61

Inhalation Comments:1/14/2015 Page 21 of 21

Stack Parameter D ata Fugitive Parameter Data

Stack Height 10.00 m Release Height: N/A

Inside Stack

Diameter: 0.10 m Length of Release

Opening: N/A

Stack Gas Exit

Velocity: 0.10 m/sec Width of Release

Opening: N/A

Stack Gas

Temperature: 293.00 K

Meteorological and Terrain Information:

Surrounding Land Use: Rural

Terrain Height: 0.00 m

Distance to Residence of Interest: 100.00 m

Meteorological Class: Full

Stability Class: NA

Wind Speed: NA

Downwash Information:

Facility Length: NA m

Facility Width: NA m

Facility Height: NA m