12/5/2012 Page 1 of 7 

INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P-13-0108 Reviewer: Tobias/BC 

 

 

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

Exposure 

Scenario1 

Water Landfill Stack Air Fugitive Air

Drinking Water Fish Ingestion

ADR LADD ADR LADD 7Q104

CC = 

1

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

Max ADR

--- --- --- --- --- --- --- 3.40E-01 --- --- ---

Max LADD

--- --- --- --- --- --- --- --- 2.50E-02 --- ---

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.

Remarks: 

Results Table: Exposure Based (XB)/Persistent (P2B2) Criteria

Parameter Exp Based Persistent Exceedance Value

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

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

Inhalation Dose (mg/kg/day) NA

Groundwater Dose (mg/kg/day) NA No

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

Total Release After Treatment (kg/yr) NA

Consumer Use? No

Fate test recommendations?: (default is NA)
12/5/2012 Page 2 of 7 

 INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0108 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 Release:

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

Remarks: 
12/5/2012 Page 3 of 7 

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0108

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 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive):

0.00 μg/m3

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): 340.00 μg/m3

Max 24 Hour Average Air Concentration (Stack): 1840.00 μg/m3

Exposure Units

Results

(Stack)

Results

(Fugitive)

ASSUMPTIONS

ED

(years)

AT

(years)

BW

(kg)

Inh. Rate 

(m3/hr)

Cancer

LADDpot (mg/kg/day) 2.50E-02 N/A 30.00 75.00 71.80 0.55

LADCpot (mg/m3) 0.14 N/A 30.00 75.00 NA NA

Acute

ADRpot (mg/kg/day) 0.34 N/A NA 1 day 71.80 0.55

Inhalation Comments: 
12/5/2012 Page 4 of 7 

 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 m 
12/5/2012 Page 5 of 7 

 INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0108 Assessor: Tobias/BC

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: 
12/5/2012 Page 6 of 7 

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0108

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 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive):

N/A μg/m3

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): 340.00 μg/m3

Max 24 Hour Average Air Concentration (Stack): N/A μg/m3

Exposure Units

Results

(Stack)

Results

(Fugitive)

ASSUMPTIONS

ED

(years)

AT

(years)

BW

(kg)

Inh. Rate 

(m3/hr)

Cancer

LADDpot (mg/kg/day) 2.50E-02 N/A 30.00 75.00 71.80 0.55

LADCpot (mg/m3) 0.14 N/A 30.00 75.00 NA NA

Acute

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

Inhalation Comments: 
12/5/2012 Page 7 of 7 

 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 m