7/8/2015 Page 1 of 12



### INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P -15-0542 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 = 24 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

MFG+USE: max acute

eco --- --- --- --- 7.50E

- 01

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

MFG+USE: PDM1

--- --- --- --- 1.80E

- 01

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

MFG+USE: PDM2

--- --- --- --- 1.10E

- 01

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

MFG+USE: Max LADD

--- --- --- --- --- --- --- --- 5.14E

- 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 d aily streamflow

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

Remarks :7/8/2015 Page 2 of 12

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0542 Assessor: Bevington/SD

ENVIRONMENTAL RELEASES

Scenario#: 1 Number of Release Site s: 1.

Release Activity: MFG+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:7/8/2015 Page 3 of 12

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0542

SI TE

- SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WAT ER RELEASES

SCENARIO NUMBER: 1 RELEASE ACTIVITY: MFG+USE: 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 70.80

AQUATIC EXPOSURE ES TIMATES

- SURFACE WATER

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT

FLOW (MLD)

CONCENTRATION (μg/L) 0.23 0.57 0.75 0.94 NA

DRINKING WATER INGESTION AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units D rinking Water

Results Drinking Water

Units Fish Ingestion

Results Fish Ingestion

Units

Cancer

LADD pot 3.52E

- 08 mg/kg/day 1.80E

- 08 mg/kg/day

LADC pot 2.71E

- 06 mg/L 1.92E

- 04 mg/kg

Acute

ADR pot 2.15E

- 05 mg/kg/day 5.77E

- 05 mg/kg/day

Surface Water Comm ents:7/8/2015 Page 4 of 12

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0542 Assessor: Bevington/SD

ENVIRONMENTAL RELEASES

Scenario#: 2 Number of Release Sites: 1.

Release Activity: MFG+USE: 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/s ite/day ) (kg/site/day) (kg/site/day)

Remarks:7/8/2015 Page 5 of 12

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0542

SI TE

- SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER: 2 RELEASE ACTIVITY: MFG+USE: PDM1

FACILITY NAME:

FACILITY LOCATION:

RECEIVING WATER NAME:

REACH NUMBER: FACILITY ON REACH: DISCHARGE TYPE:

NPDES PERMIT #: EXPOSED POPULATION: Adult

WWT

REMOVAL

(%) RELEASE

DAYS PRETREATM ENT

RELEASE

(kg/site/day) POSTTREATMENT

RELEASE

(kg/site/day) DWT

(%) BCF

(L/kg)

0.00 70.80

AQUATIC EXPOSURE ESTIMATES

- SURFACE WATER

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT

FLOW (MLD)

CONCENTRATION (μg/L) 5.50E

- 02 0.13 0.18 0.22 NA

DRINKING WATER INGESTION AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water

Results Drinking Water

Units Fish Ingestion

Results Fish Ingestion

Units

Cance r

LADD pot 1.99E

- 07 mg/kg/day 1.02E

- 07 mg/kg/day

LADC pot 1.53E

- 05 mg/L 1.08E

- 03 mg/kg

Acute

ADR pot 5.07E

- 06 mg/kg/day 1.36E

- 05 mg/kg/day

Surface Water Comments:7/8/2015 Page 6 of 12

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P

- 15

- 0542

SITE

- SPE CIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER: 2 RELEASE ACTIVITY: MFG+USE: PDM1

FACILITY NAME:

FACILITY LOCATION:

RECEIVING STREAM NAME:

REACH NUMBER: FACILITY ON REACH: DISCHARGE TYPE:

NPDES PERMIT NUMBER: GAGING STATION ID:

GAGING STATION

PERIOD OF RECORD: GAGING STATION

NUMBER OF

OBSERVATIONS: NUM BER OF STATIONS ON

REACH:

50 %ile FLOW (MLD): 10 %ile 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 (%)

24.007/8/2015 Page 7 of 12

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0542 Assessor: Bevington/SD

ENVIRONMENTAL RELEASES

Scenario#: 3 Number of Release Sites: 1.

Release Activity: MFG+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:7/8/2015 Page 8 of 12

INITIAL REVIEW EXPOSURE REPORT

C hemical ID : P- 15

- 0542

SI TE

- SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER: 3 RELEASE ACTIVITY: MFG+USE: PDM2

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 70.80

AQUATIC EXPOSURE ESTIMATES

- SURFACE WATER

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT

FLOW (MLD)

CONCENTRATION (μg/L) 3.39E

- 02 8.24E

- 02 0.11 0.14 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 1.28E

- 07 mg/kg/day 6.51E

- 08 mg/kg/day

LADC pot 9.81E

- 06 mg/L 6.95E -04 mg/kg

Acute

ADR pot 3.12E

- 06 mg/kg/day 8.36E

- 06 mg/kg/day

Surface Water Comments:7/8/2015 Page 9 of 12

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P

- 15

- 0542

SITE

- SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER: 3 R ELEASE ACTIVITY: MFG+USE: PDM2

FACILITY NAME:

FACILITY LOCATION:

RECEIVING STREAM NAME:

REACH NUMBER: FACILITY ON REACH: DISCHARGE TYPE:

NPDES PERMIT NUMBER: GAG ING STATION ID:

GAGING STATION

PERIOD OF RECORD: GAGING STATION

NUMBER OF

OBSERVATIONS: NUMBER OF STATIONS ON

REACH:

50 %ile FLOW (MLD): 10 %ile 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 (%)

24.007/8/2015 Page 10 of 12

INITIAL REVIEW EXPOSURE R EPORT

Chemical ID : P- 15

- 0542 Assessor: Bevington/SD

ENVIRONMENTAL RELEASES

Scenario#: 4 Number of Release Sites: 1.

Release Activity: MFG+USE: Max LADD

Release Description: WATER LANDFILL

Non

- sludge/Sludge STACK FUGITIVE

T otal 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:7/8/2015 Page 11 of 12

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 15

- 0542

INHALATION EXPOSURE ESTIMATES (POST

- TREATMENT)

SCENARIO #: 4 RELEASE ACTIVITY: MFG+USE: Max LADD

RELEASE DESCRIPTION:

METHOD OF CALCULATION: Screen3

EXPOSED POPULATION: Adult

N umber of Sites: 1.

Per Site Fugitive Release: kg/site/day

Fugitive Release Days per Year: days

% Removal via Fugitive Release: 0.00 %

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: 0.00 %

Total Stack Release: kg/yr

Max Annual Average Air Concentration ( Stack): 6.64 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) 5.14E

- 04 N/A 33.00 78.00 80.0 0 0.61

LADC pot (mg/m 3 ) 2.81E

- 03 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:7/8/2015 Page 12 of 12

Stack Parameter Data Fugitive Parameter Data

Stack He ight 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:

Surroun ding 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