7/17/2013 Page 1 of 21



### INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P -13-0649 Reviewer: Kwon/SD

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 =

1000 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

Mfg: Max

ADR --- --- --- --- --- --- --- 2.57E

- 02

--- --- ---

Mfg: Max

LADD --- --- --- --- --- --- --- --- 1.08E

- 03

--- ---

Use: Max

ADR: max

acute eco 3.19E

- 02

--- --- --- 6.98E+02

--- --- 9.63E

- 03

--- --- ---

Use: PDM1

--- --- --- --- 6.98E+02

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

Use: PDM2

--- --- --- --- 1.13E+02

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

Use: Max

LADD --- 3.47E

- 05

--- --- --- --- --- --- 5.33E

- 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 Expo sure 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 co lumn 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 No

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

Inhalation Dose (mg/kg/day) No No

Groundwater Dose (mg/kg/day) No No

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

Total Release After Treatment (kg/yr)

Consumer Use? No

Fate test recommendations?: (default is NA)7/17/2013 Page 2 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0649 Assessor: Kwon/SD

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 Da ys/yr:

Per Site Release:

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

Remarks:7/17/2013 Page 3 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0649

INHALATION EXPOSURE ESTIMATES (POST

- TREATMENT)

SCENARIO #: 1 RELEASE ACTIVITY: Mfg: 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: k g/site/day

Stack Rel ease Days per Year: d ays

% Removal via Stack Release: %

Total Stack Release: kg/ yr

Max Annual Average Air Concentration (Stack): 14.70 μ g/m 3

Max 24 Hour Average Air Concentration (Stack): 140.00 μ g/m 3

Exposure Units Results

(S tack) Results

(Fugitive) ASSUMPTIONS

ED

(years) AT

(years) BW

(kg) Inh. Rate

(m 3 /hr)

Cancer

LADD pot (mg/kg/day) 1.08E

- 03 N/A 30.00 75.00 71.80 0.55

LADC pot (mg/m 3 ) 5.88E

- 03 N/A 30.00 75.00 NA NA

Acute

ADR pot (mg/kg/day) 2.57E

- 02 N/A NA 1 day 71.8 0 0.55

Inhalation Comments:7/17/2013 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: 0.00 m

Distance to Residence of Interest: 100.00 m

Meteorologi cal Class: Full

Stability Class: NA

Wind Speed: NA

Downwash Information:

Facility Length: NA m

Facility Width: NA m

Facility Height: NA m7/17/2013 Page 5 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0649 Assessor: Kwon/SD

ENVIRONMENTA L RELEASES

Scenario#: 2 Number of Release Sites:

Release Activity: Mfg: 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:7/17/2013 Page 6 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0649

INHA LATION EXPOSURE ESTIMATES (POST

- TREATMENT)

SCENARIO #: 2 RELEASE ACTIVITY: Mfg: 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: k g/site/day

Stack Release Days per Year: days

% Removal via Stack Release: %

Total Stack Release: kg/ yr

Max Annual Average Air Concentration (Stack): 14.70 μ g/m 3

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

Exp osure Units Results

(Stack) Results

(Fugitive) ASSUMPTIONS

ED

(years) AT

(years) BW

(kg) Inh. Rate

(m 3 /hr)

Cancer

LADD pot (mg/kg/day) 1.08E

- 03 N/A 30.00 75.00 71.80 0.55

LADC pot (mg/m 3 ) 5.88E

- 03 N/A 30.00 75.00 NA NA

Acute

ADR pot (mg/kg/day) N/A N/A NA 1 day 71.80 0.55

Inhalation Comments:7/17/2013 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

Op ening: 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 m7/17/2013 Page 8 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0649 Assessor: Kwo n/SD

ENVIRONMENTAL RELEASES

Scenario#: 3 Number of Release Sites:

Release Activity: Use: 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:7/17/2013 Page 9 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0649

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 3 Number of Sites: RELEASE ACTIVITY: Use: Max

ADR

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 FLO W (MLD) STREA M CONC. (μg/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic

Mean 30Q5 7Q10 1Q10

ALL 50 125.56 44.02 26.80 22.53 5.89 16.81 27.61 32.85

ALL 10 11.11 1.94 1.06 0.96 66.61 381.44 698.11 770.83

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Expo sure Units Drinking Water Results Drinking

Water Units Fish Ingestion Results Fish

Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 2.64E

- 06 2.99E

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

LADC pot 1.36E

- 04 1.53E

- 03 mg/L 0.00 0.00 mg/kg

Acute

ADR pot 1.40E

- 03 3.19E

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

SIC Code Comments:7/17/2013 Page 10 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0649

INHALATION EXPOSURE ESTIMATES (POST

- TREATMENT)

SCENARIO #: 3 RELEASE ACTIVITY: Use: Max ADR

RELEASE DESCRIPTION:

METHOD OF CALCULA TION: 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 Ai r 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: k g/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 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

- 05 N/A 30.00 75.00 71.80 0.55

LADC pot (mg/m 3 ) 2.41E

- 04 N/A 30.00 75.00 NA NA

Acute

ADR pot (mg/kg/day) 9.63E

- 03 N/A NA 1 day 71.80 0.55

Inhalation Comments:7/17/2013 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

Opening: N/A

Stack Gas Exit

Velocity: 0.10 m/sec Width of Release

Opening: N/A

Stack Gas

Temperature: 293.00 K

Met eorological 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 m7/17/2013 Page 12 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0649 Assessor: Kwon/SD

ENVIRONMENTAL RELEASES

Scenario#: 4 Number of Release Sites:

Release Activity: Use: PDM1

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:7/17/2013 Page 13 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0649

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 4 Number of Sites: RELEASE ACTIVITY: Use:

PDM1

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 5.89 16 .81 27.61 32.85

ALL 10 11.11 1.94 1.06 0.96 66.61 381.44 698.11 770.83

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%

C ancer

LADD pot 2.64E

- 06 2.99E

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

LADC pot 1.36E

- 04 1.53E

- 03 mg/L 0.00 0.00 mg/kg

Acute

ADR pot 1.40E

- 03 3.19E

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

SIC Code Comments:7/17/2013 Page 14 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemica l ID: P- 13

- 0649

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO # : 4 RELEASE ACTIVITY: Use: PDM1

SIC CODE DESCRIPTION: POTW's (All facilities)

ASSOCIATED SIC CODES: 4952

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 High7/17/2013 Page 15 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0649 Assessor: Kwon/SD

ENVIRONMENTAL RELEASES

Scenario#: 5 Number of Release Sites:

Release Activity: Use: 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)

Remarks:7/17/2013 Page 16 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0649

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 5 Number of Sites: RELEASE ACTIVITY: Use:

PDM2

SIC

- CODE DESCRIPTION: POTW's (All facilities)

SIC

- CODE (S): 4952 EXPOSED POPULATION: Adult

WWT

REMOVAL

(%) RELEASE

DAYS PRETREATMENT

RELEAS E

(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 0.96 2.73 4.48 5.33

ALL 10 11.11 1.94 1.06 0.96 10.80 61.86 113.21 125.00

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 8.58E

- 07 9.69E

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

LADC pot 4.40E

- 05 4.97E

- 04 mg/L 0.00 0.00 mg/kg

Acute

ADR pot 2.28E

- 04 5.17E

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

SIC Code Comments:7/17/2013 Page 17 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P- 13

- 0649

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO # : 5 RELEASE ACTIVITY: Use: PDM2

SIC CODE DESCRIPTION: POTW's (All facilities)

ASSOCIATED SIC CODES: 4 952

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 High7/17/2013 Page 18 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0649 A ssessor: Kwon/SD

ENVIRONMENTAL RELEASES

Scenario#: 6 Number of Release Sites:

Release Activity: Use: 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:7/17/2013 Page 19 of 21

INITIAL REVIEW EXPOSURE REP ORT

Chemical ID : P- 13

- 0649

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 6 Number of Sites: RELEASE ACTIVITY: Use: Max

LADD

SIC

- CODE DESCRIPTION: POTW's (All facilities)

SIC

- CODE (S): 4952 EXPOSED PO PULATION: 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

FA CILITY 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 ESTI MATES

Exposure Units Drinking Water Results Drinking

Water Units Fish Ingestion Results Fish

Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 3.07E

- 06 3.47E

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

LADC pot 1.58E

- 04 1.78E

- 03 mg/L 0.00 0.00 mg/kg

Acute

A DR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Code Comments:7/17/2013 Page 20 of 21

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0649

INHALATION EXPOSURE ESTIMATES (POST

- TREATMENT)

SCENARIO #: 6 RELEASE ACTIVITY: Use: 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: k g/site/day

Stack Release Days per Year: days

% Removal via Stack Release: %

Total Stack Releas e: kg/ yr

Max Annual Average Air Concentration (Stack): 0.72 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)

Ca ncer

LADD pot (mg/kg/day) 5.33E

- 05 N/A 30.00 75.00 71.80 0.55

LADC pot (mg/m 3 ) 2.90E

- 04 N/A 30.00 75.00 NA NA

Acute

ADR pot (mg/kg/day) N/A N/A NA 1 day 71.80 0.55

Inhalation Comments:7/17/2013 Page 21 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:

Facilit y Length: NA m

Facility Width: NA m

Facility Height: NA m