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

Exp osure

Scenario 1 Water Landfill Stack Air Fugitive Air

Drinking Water Fish Ingestion

ADR LADD ADR LADD 7Q10 4

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 EXP OSURE 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

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: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

- SUR FACE 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

LADD pot 2.71E

- 06 2.71E

- 06 mg/kg/day 9.98E

- 08 9.98E

- 08 mg/kg/day

LADC pot 1.39E

- 04 1.39E

- 04 mg/L 1.19E

- 03 1.19E

- 03 mg/kg

Acute

ADR pot 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 RELEASE S

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

- CO DE 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 PRETREATMEN T

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 C ONC. (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 Unit s Drinking Water Results Drinking

Water Units Fish Ingestion Results Fish

Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 5.38E

- 06 5.38E

- 06 mg/kg/day 1.98E

- 07 1.98E

- 07 mg/kg/day

LADC pot 2.76E

- 04 2.76E

- 04 mg/L 2.37E

- 03 2.37E

- 03 mg/kg

Acute

ADR pot 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 DESCRI PTION: 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 High10/10/2012 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

AQU ATIC 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

LADD pot 7.68E

- 06 7.68E

- 06 mg/kg/day 2.83E

- 07 2.83E

- 07 mg/kg/day

LADC pot 3.94E

- 04 3.94E

- 04 mg/L 3.38E

- 03 3.38E

- 03 mg/kg

Acute

ADR pot 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

SLUDGE 1

AND DAYS OF

RELEASE

(kg/site/day ) /(days) MIGRATION

D ESCRIPTOR 2 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

S low <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

LADD pot (mg/kg/day) 2.31E

- 04 30.00 75.00 71.80 1.40

LADC pot (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 20.4 8 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%

Can cer

LADD pot 6.06E

- 07 6.06E

- 07 mg/kg/day 2.23E

- 08 2.23E

- 08 mg/kg/day

LADC pot 3.11E

- 05 3.11E

- 05 mg/L 2.67E

- 04 2.67E

- 04 mg/kg

Acute

ADR pot 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 High10/10/2012 Page 13 of 29

POST FOCUS EXPOSURE REPORT

Chemical ID : P- 12

- 0414 Assessor: Tobias/BC

ENVIRONMENTAL RELEASES

Sc enario#: 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

- CO DE 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 PRETRE ATMENT

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

LADD pot 6.06E

- 07 6.06E

- 07 mg/kg/day 2.23E

- 08 2.23E

- 08 mg/kg/day

LADC pot 3.11E

- 05 3.11E

- 05 mg/L 2.67E

- 04 2.67E

- 04 mg/kg

Acute

ADR pot 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 High10/10/2012 Page 16 of 29

POST FOCUS EXPOSURE REPORT

Chemical ID: P

- 12

- 0414

DRINKING WATER EX POSURE 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

SLUDGE 1

AND DAYS OF

RELEASE

(kg/site/day ) /(days) MIGRATION

DESCRIPTOR 2 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

LADD pot (mg/kg/da y) 1.83E

- 05 30.00 75.00 71.80 1.40

LADC pot (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 RE LEASES

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 1 Q10

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 Fis h

Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 5.72E

- 07 6.46E

- 06 mg/kg/day 2.11E

- 08 2.38E

- 07 mg/kg/day

LADC pot 2.93E

- 05 3.31E

- 04 mg/L 2.52E

- 04 2.85E

- 03 mg/kg

Acute

ADR pot 2.66E

- 04 6.03E

- 03 mg/kg/day 1.72E

- 05 1.94E

- 04 mg/kg/day

SIC Code Com ments: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 RE SULTS

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 High10/10/2012 Page 20 of 29

POST FOCUS EXPOSURE REPORT

Chemical ID : P- 12

- 0414 Assesso r: 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) (k g/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

WW T

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 (M LD) 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

LADD pot 5.72E

- 07 6.46E

- 06 mg/kg/day 2.11E

- 08 2.38E

- 07 mg/kg/day

LADC pot 2.93E

- 05 3.31E

- 04 mg/L 2.52E

- 04 2.85E

- 03 mg/kg

Acute

ADR pot 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

SI C 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 High10/10/2012 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

LADD pot 8.51E

- 07 9.62E

- 06 m g/kg/day 3.13E

- 08 3.54E

- 07 mg/kg/day

LADC pot 4.36E

- 05 4.93E

- 04 mg/L 3.75E

- 04 4.24E

- 03 mg/kg

Acute

ADR pot 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

Exc eeded Release

days/year Loading

(kg/site/day) Waste Water

Treatment (%) High/Avg

Analysis

26.00 High10/10/2012 Page 26 of 29

POST FOCUS EXPOSURE REPORT

Chemical ID : P- 12

- 0414 Assessor: Tobias/BC

ENVIRONMENTAL RELEASES

Scenario#: 9 Nu mber 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 D ays/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

RELEAS E

(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 F ish Ingestion Results Fish

Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 1.34E

- 06 1.52E

- 05 mg/kg/day 4.94E

- 08 5.58E

- 07 mg/kg/day

LADC pot 6.88E

- 05 7.77E

- 04 mg/L 5.91E

- 04 6.68E

- 03 mg/kg

Acute

ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Cod e 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 C ODE 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 High10/10/2012 Page 29 of 29

POST FOCUS EXPOSURE REPORT

Chemical ID: P

- 12

- 0414

DRINKING WATER EX POSURE 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

SLUDGE 1

AND DAYS OF

RE LEASE

(kg/site/day ) /(days) MIGRATION

DESCRIPTOR 2 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

(ye ars) AT

(years) BW

(kg) IR

(L/day)

Cancer

LADD pot (mg/kg/day) 4.64E

- 05 30.00 75.00 71.80 1.40

LADC pot (mg/L) 2.38E

- 03 30.00 75.00 NA NA

REMARKS: