Final November 20, 2009 Page 5 of 31 

INITIAL REVIEW EXPOSURE REPORT (IRExR) 

 Chemical ID: P100040 Reviewer: Sherer 

 

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, max 

Acute Eco, PDM, max 

LADD 

4.84e-05 1.04e-06 1.75e-03 2.23e-05 0.99 37 1.76e-06 1.42e-05 8.09e-07 1.01e-06 2.29e-08 

max ADR, max 

Acute Eco, PDM, max 

LADD 

2.20e-05 6.89e-07 7.94e-04 1.48e-05 0.45 15 7.52e-07 4.34e-06 3.47e-07 1.76e-05 5.63e-07 

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 streamflow of 

the 7 consecutive days of lowest flow within a 10 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) No No

Consumer Use? 

Fate test recommendations?: (default is NA) 
Final November 20, 2009 Page 6 of 31 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P100040w Assessor: Sherer 

ENVIRONMENTAL RELEASES 

 Scenario#:1 Number of Release Sites: 

 Release Activity: max ADR, max acute eco, PDM, 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: 
Final November 20, 2009 Page 7 of 31 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P100040w 

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO #: 1 Number of Sites RELEASE ACTIVITY: max ADR, max 

acute eco, PDM, max LADD 

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

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) 

 

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 2.67E-02 6.22E-02 9.85E-02 0.12 

ALL 10 39.60 13.29 7.76 7.57 0.19 0.58 0.99 1.02 

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 

LADDpot 1.43E-07 1.04E-06 mg/kg/day 3.06E-06 2.23E-05 mg/kg/day 

LADCpot 7.32E-06 5.33E-05 mg/L 3.66E-02 0.27 mg/kg 

Acute 

ADRpot 5.20E-06 4.84E-05 mg/kg/day 2.40E-04 1.75E-03 mg/kg/day 

SIC Code Comments: 
Final November 20, 2009 Page 8 of 31 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P100040w 

SIC CODE EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO #: 1 RELEASE ACTIVITY: max ADR, max acute eco, PDM, max LADD

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

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 

1.00 10 37 High 

REMARK: The concentration of concern (COC) is exceeded 20 or more days per year.
Final November 20, 2009 Page 9 of 31 

INITIAL EXPOSURE REVIEW REPORT 

Chemical ID: P100040w 

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES 

SCENARIO #: 1 ACTIVITY: : max ADR, max acute eco, PDM, max LADD 

RELEASE DESCRIPTION: 

EXPOSED POPULATION: Adult 

NUMBER 

OF 

SITES 

NON-SLUDGE 

LANDFILL 

RELEASE AND 

DAYS OF 

RELEASE 

(kg/site/day)/(days) 

 LANDFILLED 

SLUDGE1 

AND DAYS OF 

RELEASE 

(kg/site/day)/(days)

MIGRATION 

DESCRIPTOR2

ADSORPTION 

TO 

WASTEWATER 

SLUDGE 

 (%) 

DRINKING 

WATER 

TREATMENT 

 (%) 

 

 1 Landfilled sludge equals the fraction adsorbed to wastewater treatment sludge times the surface 

 water pre-treatment release.

 

 2 Migration Descriptor Log Koc Groundwater Concentration (GWC) 

 (mg/L per kg release)

 Negligible no migration None 

Negligible to slow > 4.5 3.21E-6 

Slow <4.5 to 3.5 2.67E-5 

Moderate <3.5 to 2.5 5.95E-5 

Rapid <2.5 7.55E-5 

 

ASSUMPTIONS 

 Exposure Units Results ED 

(years) 

AT 

(years) 

BW 

(kg) 

IR 

 (L/day) 

Cancer 

LADDpot (mg/kg/day) 1.76E-06 30.00 75.00 71.80 1.40 

LADCpot (mg/L) 9.03E-05 30.00 75.00 NA NA 

REMARKS: 

 
Final November 20, 2009 Page 10 of 31 

INITIAL EXPOSURE REVIEW REPORT 

Chemical ID: P100040w 

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT) 

SCENARIO #: 1 RELEASE ACTIVITY: max ADR, max acute eco, PDM, max LADD 

RELEASE DESCRIPTION: 

METHOD OF CALCULATION: Screen3 

EXPOSED POPULATION: Adult 

Number of Sites: 

Per Site Fugitive Release: 

Fugitive Release Days per Year: 

% Removal via Fugitive Release: 

Total Fugitive Release: 

Max Annual Average Air Concentration 

(Fugitive): 

3.11E-04 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive): 

5.47E-03 μg/m3

Per Site Stack Release: kg/site/day 

Stack Release Days per Year: 

% Removal via Stack Release: % 

Total Stack Release: kg/yr 

Max Annual Average Air Concentration (Stack): 1.10E-02 μg/m3

Max 24 Hour Average Air Concentration (Stack): 7.74E-02 μg/m3

ASSUMPTIONS 

Exposure Units 

Results 

(Stack) 

Results 

(Fugitive) ED 

(years) 

AT 

(years) 

BW 

(kg) 

Inh. Rate 

(m3/hr) 

Cancer 

LADDpot (mg/kg/day) 8.09E-07 2. 29E-08 30.00 75.00 71.80 0.55 

LADCpot (mg/m3) 4.40E-06 1.24E-07 30.00 75.00 NA NA 

Acute 

ADRpot (mg/kg/day) 1.42E-05 1. 01E-06 NA 1 day 71.80 0.55 

Inhalation Comments: 
Final November 20, 2009 Page 11 of 31 

 Stack Parameter Data Fugitive Parameter Data 

Stack Height 10.00 m Release Height: 3.00 m 

Inside Stack 

Diameter: 

0.10 m Length of Release 

Opening: 

10.00 m 

Stack Gas Exit 

Velocity: 

0.10 m/sec Width of Release 

Opening: 

10.00 m 

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 
Final November 20, 2009 Page 12 of 31 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P100040w Assessor: 

ENVIRONMENTAL RELEASES 

 Scenario#:2 Number of Release Sites: 

 Release Activity: max ADR, max acute eco, PDM, 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: 
Final November 20, 2009 Page 13 of 31 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P100040w 

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO #: 2 Number of Sites: RELEASE ACTIVITY max 

ADR, max acute eco, PDM, max 

LADD 

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

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) 

 

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 1.22E-02 2.83E-02 4.48E-02 5.30E-02

ALL 10 39.60 13.29 7.76 7.57 8.84E-02 0.26 0.45 0.46 

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 

LADDpot 9.48E-08 6.89E-07 mg/kg/day 2.03E-06 1.48E-05 mg/kg/day 

LADCpot 4.86E-06 3.54E-05 mg/L 2.43E-02 0.18 mg/kg 

Acute 

ADRpot 2.36E-06 2.20E-05 mg/kg/day 1.09E-04 7.94E-04 mg/kg/day 

SIC Code Comments: 
November 20, 2009 Page 14 of 31 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P100040w 

SIC CODE EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO #: 2 RELEASE ACTIVITY: max ADR, max acute eco, PDM, max LADD 

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

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 

1.00 4 15 High 
November 20, 2009 Page 15 of 31 

INITIAL EXPOSURE REVIEW REPORT 

Chemical ID: P100040w 

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES 

SCENARIO #: 2 ACTIVITY: max ADR, max acute eco, PDM, max LADD 

RELEASE DESCRIPTION: 

EXPOSED POPULATION: Adult 

NUMBER 

OF 

SITES 

NON-SLUDGE 

LANDFILL 

RELEASE AND 

DAYS OF 

RELEASE 

(kg/site/day)/(days) 

 LANDFILLED 

SLUDGE1 

AND DAYS OF 

RELEASE 

(kg/site/day)/(days)

MIGRATION 

DESCRIPTOR2

ADSORPTION 

TO 

WASTEWATER 

SLUDGE 

 (%) 

DRINKING 

WATER 

TREATMENT 

 (%) 

 

 1 Landfilled sludge equals the fraction adsorbed to wastewater treatment sludge times the surface 

 water pre-treatment release.

 

 2 Migration Descriptor Log Koc Groundwater Concentration (GWC) 

 (mg/L per kg release)

 Negligible no migration None 

Negligible to slow > 4.5 3.21E-6 

Slow <4.5 to 3.5 2.67E-5 

Moderate <3.5 to 2.5 5.95E-5 

Rapid <2.5 7.55E-5 

 

ASSUMPTIONS 

 Exposure Units Results ED 

(years) 

AT 

(years) 

BW 

(kg) 

IR 

 (L/day) 

Cancer 

LADDpot (mg/kg/day) 7.52E-07 30.00 75.00 71.80 1.40 

LADCpot (mg/L) 3.86E-05 30.00 75.00 NA NA 

REMARKS: 

 
November 20, 2009 Page 16 of 31 

INITIAL EXPOSURE REVIEW REPORT 

Chemical ID: P100040w 

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT) 

SCENARIO #: 2 RELEASE ACTIVITY: max ADR, max acute eco, PDM, 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): 

7.65E-03 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive): 

9.57E-02 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): 4.72E-03 μg/m3

Max 24 Hour Average Air Concentration (Stack): 2.36E-02 μg/m3

ASSUMPTIONS 

Exposure Units 

Results 

(Stack) 

Results 

(Fugitive) ED 

(years) 

AT 

(years) 

BW 

(kg) 

Inh. Rate 

(m3/hr) 

Cancer 

LADDpot (mg/kg/day) 3.47E-07 5. 63E-07 30.00 75.00 71.80 0.55 

LADCpot (mg/m3) 1.89E-06 3.06E-06 30.00 75.00 NA NA 

Acute 

ADRpot (mg/kg/day) 4.34E-06 1. 76E-05 NA 1 day 71.80 0.55 

Inhalation Comments: 
November 20, 2009 Page 17 of 31 

 Stack Parameter Data Fugitive Parameter Data 

Stack Height 10.00 m Release Height: 3.00 m 

Inside Stack 

Diameter: 

0.10 m Length of Release 

Opening: 

10.00 m 

Stack Gas Exit 

Velocity: 

0.10 m/sec Width of Release 

Opening: 

10.00 m 

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 
November 20, 2009 Page 18 of 31 

INITIAL REVIEW EXPOSURE REPORT (IRExR) 

 Chemical ID: P100040s Reviewer: Sherer 

 

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=? 

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, max 

Acute Eco, PDM, max 

LADD 

--- --- --- --- --- --- 1.74e-06 1.42e-05 8.09e-07 1.01e-06 2.29e-08 

 max ADR, max 

Acute Eco, PDM, max 

LADD 

--- --- --- --- --- --- 7.52e-07 4.34e-06 3.47e-07 1.76e-05 5.63e-07 

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 streamflow of 

the 7 consecutive days of lowest flow within a 10 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) No No

Consumer Use? 

Fate test recommendations?: (default is NA) 
November 20, 2009 Page 19 of 31 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P100040s Assessor: Sherer 

ENVIRONMENTAL RELEASES 

 Scenario#:1 Number of Release Sites: 

 Release Activity: max ADR, max acute eco, PDM, 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: 
November 20, 2009 Page 20 of 31 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P100040s 

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO #: 1 Number of Sites: RELEASE ACTIVITY: max ADR, max 

acute eco, PDM, max LADD 

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

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) 

 

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 0.00 0.00 0.00 0.00 

ALL 10 39.60 13.29 7.76 7.57 0.00 0.00 0.00 0.00 

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 

LADDpot 0.00 0.00 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 0.00 0.00 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot 0.00 0.00 mg/kg/day 0.00 0.00 mg/kg/day 

SIC Code Comments: 
November 20, 2009 Page 21 of 31 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P100040s 

SIC CODE EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO #: 1 RELEASE ACTIVITY max ADR, max acute eco, PDM, max LADD

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

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 

1.00 0 0 High 
November 20, 2009 Page 22 of 31 

INITIAL EXPOSURE REVIEW REPORT 

Chemical ID: P100040s 

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES 

SCENARIO #: 1 ACTIVITY: : max ADR, max acute eco, PDM, max LADD 

RELEASE DESCRIPTION: 

EXPOSED POPULATION: Adult 

NUMBER 

OF 

SITES 

NON-SLUDGE 

LANDFILL 

RELEASE AND 

DAYS OF 

RELEASE 

(kg/site/day)/(days) 

 LANDFILLED 

SLUDGE1 

AND DAYS OF 

RELEASE 

(kg/site/day)/(days)

MIGRATION 

DESCRIPTOR2

ADSORPTION 

TO 

WASTEWATER 

SLUDGE 

 (%) 

DRINKING 

WATER 

TREATMENT 

 (%) 

 

 1 Landfilled sludge equals the fraction adsorbed to wastewater treatment sludge times the surface 

 water pre-treatment release.

 

 2 Migration Descriptor Log Koc Groundwater Concentration (GWC) 

 (mg/L per kg release)

 Negligible no migration None 

Negligible to slow > 4.5 3.21E-6 

Slow <4.5 to 3.5 2.67E-5 

Moderate <3.5 to 2.5 5.95E-5 

Rapid <2.5 7.55E-5 

 

ASSUMPTIONS 

 Exposure Units Results ED 

(years) 

AT 

(years) 

BW 

(kg) 

IR 

 (L/day) 

Cancer 

LADDpot (mg/kg/day) 1.74E-06 30.00 75.00 71.80 1.40 

LADCpot (mg/L) 8.92E-05 30.00 75.00 NA NA 

REMARKS: 

 
November 20, 2009 Page 23 of 31 

INITIAL EXPOSURE REVIEW REPORT 

Chemical ID: P100040s 

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT) 

SCENARIO #: 1 RELEASE ACTIVITY : max ADR, max acute eco, PDM, 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): 

3.11E-04 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive): 

5.47E-03 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): 1.10E-02 μg/m3

Max 24 Hour Average Air Concentration (Stack): 7.74E-02 μg/m3

ASSUMPTIONS 

Exposure Units 

Results 

(Stack) 

Results 

(Fugitive) ED 

(years) 

AT 

(years) 

BW 

(kg) 

Inh. Rate 

(m3/hr) 

Cancer 

LADDpot (mg/kg/day) 8.09E-07 2. 29E-08 30.00 75.00 71.80 0.55 

LADCpot (mg/m3) 4.40E-06 1.24E-07 30.00 75.00 NA NA 

Acute 

ADRpot (mg/kg/day) 1.42E-05 1. 01E-06 NA 1 day 71.80 0.55 

Inhalation Comments: 
November 20, 2009 Page 24 of 31 

 Stack Parameter Data Fugitive Parameter Data 

Stack Height 10.00 m Release Height: 3.00 m 

Inside Stack 

Diameter: 

0.10 m Length of Release 

Opening: 

10.00 m 

Stack Gas Exit 

Velocity: 

0.10 m/sec Width of Release 

Opening: 

10.00 m 

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 
November 20, 2009 Page 25 of 31 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P100040s Assessor: 

ENVIRONMENTAL RELEASES 

 Scenario#:2 Number of Release Sites: 

 Release Activity: max ADR, max acute eco, PDM, 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: 
November 20, 2009 Page 26 of 31 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P100040s 

SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO #: 2 Number of Sites: RELEASE ACTIVITY: max ADR, max 

acute eco, PDM, max LADD 

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

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) 

 

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 N/A N/A N/A N/A 

ALL 10 39.60 13.29 7.76 7.57 N/A N/A N/A N/A 

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 

LADDpot N/A N/A mg/kg/day N/A N/A mg/kg/day 

LADCpot N/A N/A mg/L N/A N/A mg/kg 

Acute 

ADRpot N/A N/A mg/kg/day N/A N/A mg/kg/day 

SIC Code Comments: 
November 20, 2009 Page 27 of 31 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P100040s 

SIC CODE EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO #: 2 RELEASE ACTIVITY: max ADR, max acute eco, PDM, max LADD 

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

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 

1.00 0 0 
November 20, 2009 Page 28 of 31 

INITIAL EXPOSURE REVIEW REPORT 

Chemical ID: P100040s 

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES 

SCENARIO #: 2 ACTIVITY: max ADR, max acute eco, PDM, max LADD 

RELEASE DESCRIPTION: 

EXPOSED POPULATION: Adult 

NUMBER 

OF 

SITES 

NON-SLUDGE 

LANDFILL 

RELEASE AND 

DAYS OF 

RELEASE 

(kg/site/day)/(days) 

 LANDFILLED 

SLUDGE1 

AND DAYS OF 

RELEASE 

(kg/site/day)/(days)

MIGRATION 

DESCRIPTOR2

ADSORPTION 

TO 

WASTEWATER 

SLUDGE 

 (%) 

DRINKING 

WATER 

TREATMENT 

 (%) 

 

 1 Landfilled sludge equals the fraction adsorbed to wastewater treatment sludge times the surface 

 water pre-treatment release.

 

 2 Migration Descriptor Log Koc Groundwater Concentration (GWC) 

 (mg/L per kg release)

 Negligible no migration None 

Negligible to slow > 4.5 3.21E-6 

Slow <4.5 to 3.5 2.67E-5 

Moderate <3.5 to 2.5 5.95E-5 

Rapid <2.5 7.55E-5 

 

ASSUMPTIONS 

 Exposure Units Results ED 

(years) 

AT 

(years) 

BW 

(kg) 

IR 

 (L/day) 

Cancer 

LADDpot (mg/kg/day) 7.52E-07 30.00 75.00 71.80 1.40 

LADCpot (mg/L) 3.86E-05 30.00 75.00 NA NA 

REMARKS: 

 
November 20, 2009 Page 29 of 31 

INITIAL EXPOSURE REVIEW REPORT 

Chemical ID: P100040s 

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT) 

SCENARIO #: 2 RELEASE ACTIVITY: max ADR, max acute eco, PDM, 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): 

7.65E-03 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive): 

9.56E-02 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): 4.72E-03 μg/m3

Max 24 Hour Average Air Concentration (Stack): 2.36E-02 μg/m3

ASSUMPTIONS 

Exposure Units 

Results 

(Stack) 

Results 

(Fugitive) ED 

(years) 

AT 

(years) 

BW 

(kg) 

Inh. Rate 

(m3/hr) 

Cancer 

LADDpot (mg/kg/day) 3.47E-07 5. 63E-07 30.00 75.00 71.80 0.55 

LADCpot (mg/m3) 1.89E-06 3.06E-06 30.00 75.00 NA NA 

Acute 

ADRpot (mg/kg/day) 4.34E-06 1. 76E-05 NA 1 day 71.80 0.55 

Inhalation Comments: 
November 20, 2009 Page 30 of 31 

 Stack Parameter Data Fugitive Parameter Data 

Stack Height 10.00 m Release Height: 3.00 m 

Inside Stack 

Diameter: 

0.10 m Length of Release 

Opening: 

10.00 m 

Stack Gas Exit 

Velocity: 

0.10 m/sec Width of Release 

Opening: 

10.00 m 

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 
November 20, 2009 Page 31 of 31 

LEGEND FOR NEW CHEMICALS EXPOSURE REPORT 

This new chemicals exposure report was prepared by the Exposure Assessment Branch (EAB) of the Economics, 

Exposure and Technology Division, Office of Pollution Prevention and Toxics, USEPA. 

The goals of these reports are to calculate conservative (protective) estimates of exposure endpoints for consumers, 

the general population, and the environment. 

For each exposure scenario to industrial releases, the following three endpoints are calculated: 

(1) maximum possible acute concentrations and doses 

(2) maximum possible chronic concentrations and doses 

(3) for water releases ≥ 20 days, the probability of exceedence of the aquatic concentration of concern 

These endpoints are identified by abbreviations on the Release Activity line, e.g., (1) max ADR, (2) max 

LADD, (3) max PDM. Depending on the release inputs, these endpoints may be calculated and presented on 

the same page or different pages. That is, a release activity ID of mfg; max ADR, max PDM, max LADD

indicates that all the exposure endpoints were calculated from common manufacturing release values; 

conversely, a release activity ID of mfg &proc; max ADR indicates that only the maximum acute exposure 

values were calculated for manufacturing and processing releases that occurred at the same site. 

For each consumer product use exposure scenario, whether exposure is to the user directly or to the general 

population/environment, the maximum exposure values are calculated and presented together. 

In addition to the exposure values above, EPA policy directs that exposure and release values be compared to 

criteria threshold values for Exposure-based and PBT Exposure-based cases. 

Exposure-based (YX) cases (those with ≥ 100,000 kg/yr production volume) 

Criteria are exceeded under the following conditions: 

 Presence in consumer product with likely exposure 

≥ 3E-3 mg/kg/d exposure via air, fish ingestion or drinking water 

≥ 10,000 kg/yr release to environment (post-treatment) 

≥ 1,000 kg/yr release to water (post-treatment) 

Persistent, Bioaccumulative, Toxic (PBT) chemicals of P2B2 rating or higher and production volume ≥ 20,000 kg/yr 

Criteria are exceeded as for YX cases, with the following differences: 

≥ 2,000 kg/yr release to environment (post-treatment) 

≥ 200 kg/yr release to water (post-treatment) 

Bolding rules in the Report: Values for endpoints above that are also health or eco concerns are bolded.