4/22/2015 Page 1 of 19



### INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P-15-0382 Reviewer: Bevington/SD

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

Exposure Scenario 1 Water Landfi ll Stack Air Fugitive Air

Release activity(ies) 2 ;

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

CC = 500 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 acute eco

--- --- --- --- 1.12E+01

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

PDM1

--- --- --- --- 1.12E+01

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

: max acute

eco --- --- --- --- 1.03E+01

--- --- --- --- 3.66E

- 02

---

PDM1

--- --- --- --- 1.03E+01

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

PDM2

--- --- --- --- 2.58E+00

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

: Max

LADD --- --- --- --- --- --- --- --- --- --- 8.67E

- 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.4/22/2015 Page 2 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P

- 15

- 0382 Asse ssor: Bevington/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 /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:4/22/2015 Page 3 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0382

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 NUMB ER: 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)

CONCENTRAT ION (μg/L) 2.36 6.63 11.18 13.42 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 2.46E

- 06 mg/kg/day 0.00 mg/kg/d ay

LADC pot 1.89E

- 04 mg/L 0.00 mg/kg

Acute

ADR pot 2.51E

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

Surface Water Comments:4/22/2015 Page 4 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P

- 15

- 0382 Assessor: Bevington/SD

ENVIRONMENTAL RELEASES

Scenario#: 2 Numbe r of Release Sites:

Release Activity: PDM1

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:4/22/2015 Page 5 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0382

SI TE

- SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SUR FACE WATER RELEASES

SCENARIO NUMBER: 2 RELEASE ACTIVITY: PDM1

FACILITY NAME:

FACILITY LOCATION:

RECEIVING WATER NAME:

REACH NUMBER: FACILITY ON REACH: DISCHARGE TYPE:

NPDES PERM IT #: 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

- SURF ACE WATER

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT

FLOW (MLD)

CONCENTRATION (μg/L) 2.36 6.63 11.18 13.42 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 2.46E

- 06 mg/kg/day 0. 00 mg/kg/day

LADC pot 1.89E

- 04 mg/L 0.00 mg/kg

Acute

ADR pot 2.51E

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

Surface Water Comments:4/22/2015 Page 6 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P- 15

- 0382

SITE

- SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER: 2 RELEASE ACTIVITY: PDM1

FACILITY NAME:

FACILITY LOCATION:

RECEIVING STREAM NAME:

REACH NUMBER: FACILITY ON REACH: DISCHARGE TYPE:

NPDES PERMIT NU MBER: GAGING STATION ID:

GAGING STATION

PERIOD OF RECORD: GAGING STATION

NUMBER OF

OBSERVATIONS: NUMBER OF STATIONS ON

REACH:

MEAN FLOW (MLD): 7q10 FLOW (MLD): EFFLUENT FLOW (MLD):

RESULTS

COC (μg/L) Percent of Year

COC Exceeded Number of Days

COC Exceeded Release

days/year Pre

- treatment

Loading

(kg/site/day) Waste Water

Treatment (%)

4.00 90.004/22/2015 Page 7 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P

- 15

- 0382 Assessor: B evington/SD

ENVIRONMENTAL RELEASES

Scenario#: 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/Sludge

Release Days/yr:

Per Site Release:

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

Remarks:4/22/2015 Page 8 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15 -0382

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 3 Number of Sites: RELEASE

ACTIVITY: : Max

ADR

SIC

- CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disc h.)

SIC

- CODE (S): Subset of 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 50 288.00 123.84 78.18 66.05 0.28 0.65 1.02 1.21

ALL 10 39.60 13.29 7.76 7.57 2.02 6.02 10. 31 10.57

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 1.38E

- 07 1.00E

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

LADC pot 1.06E

- 05 7.73E

- 05 mg/L 0.00 0.00 mg/kg

Acute

ADR pot 2.45E

- 05 2.28E

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

SIC Code Comments:4/22/2015 Page 9 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0382

INHALATION 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 Release Days per Year: days

% Removal via F ugitive Release: %

Total Fugitive Release: kg/yr

Max Annual Average Air Concentration

(Fugitive): 11.20 μ g/m 3

Max 24 Hour Average Air

Concentration(Fugitive): 200.00 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): 0.00 μ g/m 3

Max 24 Hour Average Air Concentration (Stack): 0.00 μ g/m 3

Exposure Units Results

(Stack) Results

(Fugitive) ASSU MPTIONS

ED

(years) AT

(years) BW

(kg) Inh. Rate

(m 3 /hr)

Cancer

LADD pot (mg/kg/day) N/A 8.67E

- 04 33.00 78.00 80.00 0.61

LADC pot (mg/m 3 ) N/A 4.74E

- 03 33.00 78.00 NA NA

Acute

ADR pot (mg/kg/day) N/A 3.66E

- 02 NA 1 day 80.00 0.61

Inhalation Comments:4/22/2015 Page 10 of 19

Stack Parameter Data Fugitive Parameter Data

Stack Height 10.00 Release Height: 3.00 m

Inside Stack

Diameter: 0.10 Length of Release

Opening: 10.00 m

Stack Gas Exit

Velocity: 0.10 W idth of Release

Opening: 10.00 m

Stack Gas

Temperature: 293.00

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 Cl ass: NA

Wind Speed: NA

Downwash Information:

Facility Length: NA m

Facility Width: NA m

Facility Height: NA m4/22/2015 Page 11 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P

- 15

- 0382 Assessor: Bevington/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/yr)

Non

- sludge/Sludge

Rele ase Days/yr:

Per Site Release:

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

Remarks:4/22/2015 Page 12 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15 -0382

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 4 Number of Sites: RELEASE

ACTIVITY: : PDM1

SIC

- CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disch.)

SIC

- CODE (S): Subset of 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 50 288.00 123.84 78.18 66.05 0.28 0.65 1.02 1.21

ALL 10 39.60 13.29 7.76 7.57 2.02 6.02 10.31 10.57

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 1.38E

- 07 1.00E

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

LADC pot 1.06E

- 05 7.73E

- 05 mg/L 0.00 0.00 mg/kg

Acute

ADR pot 2.45E

- 05 2.28E

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

SIC Code Comments:4/22/2015 Page 13 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P- 15

- 0382

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO # : 4 RELEASE ACTIVITY: PDM1

SIC CODE DESCRIPTION: P OTW (Indust., includes POTWs which receive ind. disch.)

ASSOCIATED SIC CODES: Subset of 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

4.00 High4/22/2015 Page 14 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P

- 15

- 0382 Assessor: Bevington/SD

ENVIRONMENTAL RELEASES

Scenario#: 5 Number of Release Sites:

Release Activity: PDM2

Re lease 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:4/22/2015 Page 15 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15 -0382

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 5 Number of Site s: RELEASE

ACTIVITY: PDM2

SIC

- CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disch.)

SIC

- CODE (S): Subset of 4952 EXPOSED POPULATION: Adult

WWT

REMOVAL

(%) RELEASE

DAYS PRETREATMENT

RELEASE

(kg/site/day) POSTTREATMENT

R ELEASE

(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 3 0Q5 7Q10 1Q10

ALL 50 288.00 123.84 78.18 66.05 6.94E

- 02 0.16 0.26 0.30

ALL 10 39.60 13.29 7.76 7.57 0.51 1.50 2.58 2.64

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 2.62E

- 07 1.90E

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

LADC pot 2.01E

- 05 1.46E

- 04 mg/L 0.00 0.00 mg/kg

Acute

ADR pot 6.12E

- 06 5.70E

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

SIC Code Comments:4/22/2015 Page 16 of 19

IN ITIAL REVIEW EXPOSURE REPORT

Chemical ID: P- 15

- 0382

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO # : 5 RELEASE ACTIVITY: PDM2

SIC CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disch.)

ASSOCIATED S IC CODES: Subset of 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

4.00 High4/22/2015 Page 17 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P

- 15

- 0382 As sessor: Bevington/SD

ENVIRONMENTAL RELEASES

Scenario#: 6 Number of Release Sites:

Release Activity: Max LADD

Release Description: WATER LANDFILL

Non

- sludge/Sludge STACK FUGITIVE

Total Releases:

(k g/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:4/22/2015 Page 18 of 19

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0382

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): 11.20 μ g/m 3

Max 24 Hour Average Air

Concentrati on(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): 0.00 μ g/m 3

Max 24 Hour Average Air Co ncentration (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) N/A 8.67E

- 04 33.00 78.00 80.00 0.61

LADC pot (mg/m 3 ) N/A 4.74E

- 03 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:4/22/2015 Page 19 of 19

Stack Parameter Data Fugitive Parameter Data

Stack Height 10.00 Release Height: 3.00 m

Inside Sta ck

Diameter: 0.10 Length of Release

Opening: 10.00 m

Stack Gas Exit

Velocity: 0.10 Width of Release

Opening: 10.00 m

Stack Gas

Temperature: 293.00

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