12/17/2014 Page of



### POST FOCUS EXPOSURE REPORT

Chemical ID: P -15-0002C Reviewer: Tobias/BC

(P -15-0002, -0003, -0004, -0005, and -0006)

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

Exposure Scenario 1 Water Landfill Stack Air Fugitive Air

Release activity(ies) 2 ;

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

CC =18 PDM

Days

Exceeded LA DD 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

--- --- --- --- 2.15E+01

--- --- --- --- 1.15E+00

---

Max LADD

--- --- --- --- --- --- --- --- --- --- 8.52E

- 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 lab els.

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 cons ecutive days of lowest flow within a ten year period.

Remarks :12/17/2014 Page of

POST FOCUS EXPOSURE REPORT

Chemical ID : P- 15

- 0002 Assessor: Tobias/BC

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 Rel ease:

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

Remarks:12/17/2014 Page of

POST FOCUS EXPOSURE REPORT

Chemical ID : P- 15

- 0002

SI TE

- SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER: 1 RELEASE ACTIVI TY: 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 30Q 5 7Q10 1Q10 PLANT

FLOW (MLD)

CONCENTRATION (μg/L) 7.39 14.08 21.50 26.32 NA

DRINKING WATER INGESTION AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water

Results Drinking Water

Units Fish Ingestion

Resul ts Fish Ingestion

Units

Cancer

LADD pot 8.91E

- 07 mg/kg/day 0.00 mg/kg/day

LADC pot 6.85E

- 05 mg/L 0.00 mg/kg

Acute

ADR pot 5.33E

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

Surface Water Comments:12/17/2014 Page of

POST FOCUS EXPOSURE REPORT

Chemical ID : P- 15

- 0002

INHALATION EXP OSURE 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): 11.00 μ g/m 3

Max 24 Hour Average Air

Concentration(Fugitive): 6290.00 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 Unit s Results

(Stack) Results

(Fugitive) ASSUMPTIONS

ED

(years) AT

(years) BW

(kg) Inh. Rate

(m 3 /hr)

Cancer

LADD pot (mg/kg/day) N/A 8.52E

- 04 33.00 78.00 80.00 0.61

LADC pot (mg/m 3 ) N/A 4.65E

- 03 33.00 78.00 NA NA

Acute

ADR pot (mg/kg/day) N/A 1.15 NA 1 day 80.00 0.61

Inhalation Comments:12/17/2014 Page of

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 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

Me teorological Class: Full

Stability Class: NA

Wind Speed: NA

Downwash Information:

Facility Length: NA m

Facility Width: NA m

Facility Height: NA m12/17/2014 Page of

POST FOCUS EXPOSURE REPORT

Chemical ID : P- 15

- 0002 Assessor: Tobias/BC

ENVIR ONMENTAL 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:12/17/2014 Page of

POST FOCUS EXPOSURE REPORT

Chemical ID : P- 15

- 0002

INH ALATION 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

Fug itive Release Days per Year: days

% Removal via Fugitive Release: %

Total Fugitive Release: kg/yr

Max Annual Average Air Concentration

(Fugitive): 11.00 μ g/m 3

Max 24 Hour Average Air

Concentration(Fugitive): N/A μ g/m 3

Per Site Stack R elease: 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): N/A μ g/m 3

Expos ure 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 8.52E

- 04 33.00 78.00 80.00 0.61

LADC pot (mg/m 3 ) N/A 4.65E

- 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:12/17/2014 Page of

Stack Parameter Data Fugitive Parameter Data

Stack Height 10.00 Release Height: 3.00 m

Inside Stack

Diameter: 0.10 Length of Release

Open ing: 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