10/10/2012 Page 1 of 29

POST FOCUS EXPOSURE REPORT 

Chemical ID: P-12-0414 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 = 

26

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

PROC: Max 

ADR: max 

acute eco

2.01E-03 --- 1.03E-04 --- 4.01E+01 --- --- --- --- --- ---

PROC: PDM1 --- --- --- --- 6.05E+00 --- --- --- --- ---

PROC: Max 

LADD

--- 7.68E-06 --- 2.83E-07 --- --- 2.31E-04 --- --- --- ---

PROC2: Max 

ADR: max 

acute eco

1.71E-03 --- 8.76E-05 --- 3.41E+01 --- --- --- --- --- ---

PROC2: Max 

LADD

--- 6.06E-07 --- 2.23E-08 --- --- 1.83E-05 --- --- --- ---

USE: Max 

ADR: max 

acute eco

6.03E-03 --- 1.94E-04 --- 1.32E+02 --- --- --- --- --- ---

USE: PDM1 --- --- --- --- 1.32E+02 --- --- --- --- ---

USE: PDM2 --- --- --- --- 1.89E+01 --- --- --- --- ---

USE: Max 

LADD

--- 1.52E-05 --- 5.58E-07 --- --- 4.64E-05 --- --- --- ---

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: 
10/10/2012 Page 2 of 29

 POST FOCUS EXPOSURE REPORT

Chemical ID: P-12-0414 Assessor: Tobias/BC

ENVIRONMENTAL RELEASES

Scenario#:1 Number of Release Sites: 

Release Activity: PROC: 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: 
10/10/2012 Page 3 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

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

SCENARIO #: 1 Number of Sites: RELEASE ACTIVITY:PROC: 

Max ADR

SIC-CODE DESCRIPTION: 

SIC-CODE (S): EXPOSED POPULATION: Adult

WWT 

REMOVAL

(%)

RELEASE

DAYS

PRETREATMENT 

RELEASE 

(kg/site/day)

POSTTREATMENT 

RELEASE 

(kg/site/day)

DWT

(%) BCF

(L/kg) 

 0.00 8.59

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 6.68 24.11 40.13 48.28

ALL 10 6.68 24.11 40.13 48.28

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 2.71E-06 2.71E-06 mg/kg/day 9.98E-08 9.98E-08 mg/kg/day

LADCpot 1.39E-04 1.39E-04 mg/L 1.19E-03 1.19E-03 mg/kg

Acute

ADRpot 2.01E-03 2.01E-03 mg/kg/day 1.03E-04 1.03E-04 mg/kg/day

SIC Code Comments: 
10/10/2012 Page 4 of 29

 POST FOCUS EXPOSURE REPORT

Chemical ID: P-12-0414 Assessor: Tobias/BC

ENVIRONMENTAL RELEASES 

Scenario#:2 Number of Release Sites: 

Release Activity: PROC: 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: 
10/10/2012 Page 5 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

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

SCENARIO #: 2 Number of Sites: RELEASE ACTIVITY:PROC: 

PDM1

SIC-CODE DESCRIPTION: 

SIC-CODE (S): EXPOSED POPULATION: Adult

WWT 

REMOVAL

(%)

RELEASE

DAYS

PRETREATMENT 

RELEASE 

(kg/site/day)

POSTTREATMENT 

RELEASE 

(kg/site/day)

DWT

(%) BCF

(L/kg) 

 0.00 8.59

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 1.01 3.63 6.05 7.28

ALL 10 1.01 3.63 6.05 7.28

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 5.38E-06 5.38E-06 mg/kg/day 1.98E-07 1.98E-07 mg/kg/day

LADCpot 2.76E-04 2.76E-04 mg/L 2.37E-03 2.37E-03 mg/kg

Acute

ADRpot 3.04E-04 3.04E-04 mg/kg/day 1.55E-05 1.55E-05 mg/kg/day

SIC Code Comments: 
10/10/2012 Page 6 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 2 RELEASE ACTIVITY: PROC: PDM1

SIC CODE DESCRIPTION: I

ASSOCIATED SIC CODES: 

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

26.00 High
10/10/2012 Page 7 of 29

 POST FOCUS EXPOSURE REPORT

Chemical ID: P-12-0414 Assessor: Tobias/BC

ENVIRONMENTAL RELEASES

Scenario#:3 Number of Release Sites: 

Release Activity: PROC: 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: 
10/10/2012 Page 8 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

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

SCENARIO #: 3 Number of Sites: RELEASE ACTIVITY:PROC: 

Max LADD

SIC-CODE DESCRIPTION: 

SIC-CODE (S): EXPOSED POPULATION: Adult

WWT 

REMOVAL

(%)

RELEASE

DAYS

PRETREATMENT 

RELEASE 

(kg/site/day)

POSTTREATMENT 

RELEASE 

(kg/site/day)

DWT

(%) BCF

(L/kg) 

 0.00 8.59

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

ALL 10 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 7.68E-06 7.68E-06 mg/kg/day 2.83E-07 2.83E-07 mg/kg/day

LADCpot 3.94E-04 3.94E-04 mg/L 3.38E-03 3.38E-03 mg/kg

Acute

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

SIC Code Comments: 
10/10/2012 Page 9 of 29

POST FOCUS EXPOSURE REPORT

Chemical ID: P-12-0414

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES

SCENARIO #: 3 ACTIVITY: PROC: 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

(%)

 0.00 0.00

 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 

 

 Exposure Units Results

ASSUMPTIONS

ED

(years)

AT

(years)

BW

(kg)

IR

(L/day)

Cancer

LADDpot (mg/kg/day) 2.31E-04 30.00 75.00 71.80 1.40

LADCpot (mg/L) 1.19E-02 30.00 75.00 NA NA

REMARKS:

 
10/10/2012 Page 10 of 29

 POST FOCUS EXPOSURE REPORT

Chemical ID: P-12-0414 Assessor: Tobias/BC

ENVIRONMENTAL RELEASES

Scenario#:4 Number of Release Sites: 

Release Activity: PROC2: 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: 
10/10/2012 Page 11 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

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

SCENARIO #: 4 Number of Sites: RELEASE ACTIVITY:PROC2: 

Max ADR

SIC-CODE DESCRIPTION: 

SIC-CODE (S): EXPOSED POPULATION: Adult

WWT 

REMOVAL

(%)

RELEASE

DAYS

PRETREATMENT 

RELEASE 

(kg/site/day)

POSTTREATMENT 

RELEASE 

(kg/site/day)

DWT

(%) BCF

(L/kg) 

 0.00 8.59

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 5.67 20.48 34.08 41.01

ALL 10 5.67 20.48 34.08 41.01

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 6.06E-07 6.06E-07 mg/kg/day 2.23E-08 2.23E-08 mg/kg/day

LADCpot 3.11E-05 3.11E-05 mg/L 2.67E-04 2.67E-04 mg/kg

Acute

ADRpot 1.71E-03 1.71E-03 mg/kg/day 8.76E-05 8.76E-05 mg/kg/day

SIC Code Comments: 
10/10/2012 Page 12 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 4 RELEASE ACTIVITY: PROC2: Max ADR

SIC CODE DESCRIPTION: 

ASSOCIATED SIC CODES: 

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

26.00 High
10/10/2012 Page 13 of 29

 POST FOCUS EXPOSURE REPORT

Chemical ID: P-12-0414 Assessor: Tobias/BC

ENVIRONMENTAL RELEASES

Scenario#:5 Number of Release Sites: 

Release Activity: PROC2: 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: 
10/10/2012 Page 14 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

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

SCENARIO #: 5 Number of Sites: RELEASE ACTIVITY:PROC2: 

Max LADD

SIC-CODE DESCRIPTION: 

SIC-CODE (S): EXPOSED POPULATION: Adult

WWT 

REMOVAL

(%)

RELEASE

DAYS

PRETREATMENT 

RELEASE 

(kg/site/day)

POSTTREATMENT 

RELEASE 

(kg/site/day)

DWT

(%) BCF

(L/kg) 

 0.00 8.59

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

ALL 10 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 6.06E-07 6.06E-07 mg/kg/day 2.23E-08 2.23E-08 mg/kg/day

LADCpot 3.11E-05 3.11E-05 mg/L 2.67E-04 2.67E-04 mg/kg

Acute

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

SIC Code Comments: 
10/10/2012 Page 15 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 5 RELEASE ACTIVITY: PROC2: Max LADD

SIC CODE DESCRIPTION: 

ASSOCIATED SIC CODES: 

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

26.00 High
10/10/2012 Page 16 of 29

POST FOCUS EXPOSURE REPORT

Chemical ID: P-12-0414

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES

SCENARIO #: 5 ACTIVITY: PROC2: 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

(%)

 0.00 0.00

 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 

 

 Exposure Units Results

ASSUMPTIONS

ED

(years)

AT

(years)

BW

(kg)

IR

(L/day)

Cancer

LADDpot (mg/kg/day) 1.83E-05 30.00 75.00 71.80 1.40

LADCpot (mg/L) 9.36E-04 30.00 75.00 NA NA

REMARKS:

 
10/10/2012 Page 17 of 29

 POST FOCUS EXPOSURE REPORT

Chemical ID: P-12-0414 Assessor: Tobias/BC

ENVIRONMENTAL RELEASES

Scenario#:6 Number of Release Sites: 

Release Activity: 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: 
10/10/2012 Page 18 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

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

SCENARIO #: 6 Number of Sites: RELEASE ACTIVITY:USE: Max 

ADR

SIC-CODE DESCRIPTION: POTW's (All facilities)

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) 

 0.00 8.59

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 50 125.56 44.02 26.80 22.53 1.12 3.18 5.22 6.21

ALL 10 11.11 1.94 1.06 0.96 12.60 72.16 132.08 145.83

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 5.72E-07 6.46E-06 mg/kg/day 2.11E-08 2.38E-07 mg/kg/day

LADCpot 2.93E-05 3.31E-04 mg/L 2.52E-04 2.85E-03 mg/kg

Acute

ADRpot 2.66E-04 6.03E-03 mg/kg/day 1.72E-05 1.94E-04 mg/kg/day

SIC Code Comments: 
10/10/2012 Page 19 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 6 RELEASE ACTIVITY: USE: Max ADR

SIC CODE DESCRIPTION: POTW's (All facilities)

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

26.00 High
10/10/2012 Page 20 of 29

 POST FOCUS EXPOSURE REPORT

Chemical ID: P-12-0414 Assessor: Tobias/BC

ENVIRONMENTAL RELEASES

Scenario#:7 Number of Release Sites: 

Release Activity: 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/site/day) (kg/site/day) (kg/site/day)

Remarks: 
10/10/2012 Page 21 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

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

SCENARIO #: 7 Number of Sites: RELEASE ACTIVITY:USE: 

PDM1

SIC-CODE DESCRIPTION: POTW's (All facilities)

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) 

 0.00 8.59

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 50 125.56 44.02 26.80 22.53 1.12 3.18 5.22 6.21

ALL 10 11.11 1.94 1.06 0.96 12.60 72.16 132.08 145.83

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 5.72E-07 6.46E-06 mg/kg/day 2.11E-08 2.38E-07 mg/kg/day

LADCpot 2.93E-05 3.31E-04 mg/L 2.52E-04 2.85E-03 mg/kg

Acute

ADRpot 2.66E-04 6.03E-03 mg/kg/day 1.72E-05 1.94E-04 mg/kg/day

SIC Code Comments: 
10/10/2012 Page 22 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 7 RELEASE ACTIVITY: USE: PDM1

SIC CODE DESCRIPTION: POTW's (All facilities)

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

26.00 High
10/10/2012 Page 23 of 29

 POST FOCUS EXPOSURE REPORT

Chemical ID: P-12-0414 Assessor: Tobias/BC

ENVIRONMENTAL RELEASES

Scenario#:8 Number of Release Sites: 

Release Activity: 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: 
10/10/2012 Page 24 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

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

SCENARIO #: 8 Number of Sites: RELEASE ACTIVITY:USE: 

PDM2

SIC-CODE DESCRIPTION: POTW's (All facilities)

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) 

 0.00 8.59

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 50 125.56 44.02 26.80 22.53 0.16 0.45 0.75 0.89

ALL 10 11.11 1.94 1.06 0.96 1.80 10.31 18.87 20.83

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 8.51E-07 9.62E-06 mg/kg/day 3.13E-08 3.54E-07 mg/kg/day

LADCpot 4.36E-05 4.93E-04 mg/L 3.75E-04 4.24E-03 mg/kg

Acute

ADRpot 3.80E-05 8.61E-04 mg/kg/day 2.46E-06 2.78E-05 mg/kg/day

SIC Code Comments: 
10/10/2012 Page 25 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 8 RELEASE ACTIVITY: USE: PDM2

SIC CODE DESCRIPTION: POTW's (All facilities)

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

26.00 High
10/10/2012 Page 26 of 29

 POST FOCUS EXPOSURE REPORT

Chemical ID: P-12-0414 Assessor: Tobias/BC

ENVIRONMENTAL RELEASES

Scenario#:9 Number of Release Sites: 

Release Activity: USE: 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: 
10/10/2012 Page 27 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

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

SCENARIO #: 9 Number of Sites: RELEASE ACTIVITY:USE: Max 

LADD

SIC-CODE DESCRIPTION: POTW's (All facilities)

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) 

 0.00 8.59

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 50 125.56 44.02 26.80 22.53 N/A N/A N/A N/A

ALL 10 11.11 1.94 1.06 0.96 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 1.34E-06 1.52E-05 mg/kg/day 4.94E-08 5.58E-07 mg/kg/day

LADCpot 6.88E-05 7.77E-04 mg/L 5.91E-04 6.68E-03 mg/kg

Acute

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

SIC Code Comments: 
10/10/2012 Page 28 of 29

POST FOCUS EXPOSURE REPORT

 Chemical ID: P-12-0414

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 9 RELEASE ACTIVITY: USE: Max LADD

SIC CODE DESCRIPTION: POTW's (All facilities)

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

26.00 High
10/10/2012 Page 29 of 29

POST FOCUS EXPOSURE REPORT

Chemical ID: P-12-0414

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES

SCENARIO #: 9 ACTIVITY: USE: 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

(%)

 0.00 0.00

 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 

 

 Exposure Units Results

ASSUMPTIONS

ED

(years)

AT

(years)

BW

(kg)

IR

(L/day)

Cancer

LADDpot (mg/kg/day) 4.64E-05 30.00 75.00 71.80 1.40

LADCpot (mg/L) 2.38E-03 30.00 75.00 NA NA

REMARKS: