June 2, 2010



### INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P -10- 0235 R eviewer: Flessner/SD

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

Exposure Scenario 1 Water Landf ill Stack Air Fugitive Air

Drinking Water Fish Ingestion

ADR LADD ADR LADD 7Q10 4

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

Proc1: max acute eco

--- --- --- --- 5.14E

- 04

--- --- --- --- --- ---

Proc1: PDM1

--- --- --- --- 5.14E

- 04

--- --- --- --- ---

Proc2: max acute eco

--- --- --- --- 1.86E+00

--- --- --- --- --- ---

Proc2: PDM1

--- --- --- -- - 2.41E

- 02

--- --- --- --- ---

Proc3: max acute eco

--- --- --- --- 5.01E

- 02

--- --- --- --- --- ---

Proc3: PDM1

--- --- --- --- 5.01E

- 02

--- --- --- --- ---

Use: max acute eco

--- --- --- --- 2.32E

- 04

--- --- --- --- --- ---

Use: PDM1

--- --- --- --- 2.32E

- 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 la bels.

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 con secutive days of lowest flow within a ten year period.

Remarks:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 10

- 0235 Assessor: Flessner/SD

ENVIRONMENTAL RELEASES

Scenario#: 1 Number of Release Sites:

Release Acti vity: Proc1: 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:

Pe r Site Release:

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

Remarks:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 10

- 0235

SI TE

- SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER: 1 RELEASE ACTIVITY: Proc1: Max ADR

FACILITY NAME:

FACILITY LOCATION:

RECEIVING WATER NAME:

REACH NUMBER: FACILITY ON REACH: DISCHARGE TYPE:

NPDES PERMIT #: E XPOSED POPULATION: Adult

WWT

REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT

RELEASE (kg/site/day) DWT

(%) BCF (L/kg)

0.00 126.00

AQUATIC EXPOSURE ESTIMATES

- SURFACE WATER

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT

FLOW (MLD)

CONCENTRATION (μg/L) 9.04E

- 05 3.18E

- 04 5.14E

- 04 5.52E

- 04 NA

DRINKING WATER INGESTION AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water

Result s Drinking Water

Units Fish Ingestion

Results Fish Ingestion

Units

Cancer

LADD pot 3.87E

- 11 mg/kg/day 2.09E

- 11 mg/kg/day

LADC pot 1.98E

- 09 mg/L 2.50E

- 07 mg/kg

Acute

ADR pot 2.65E

- 08 mg/kg/day 2.05E

- 08 mg/kg/day

Surface Water Comments:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 10

- 0235 Assessor: Flessner/SD

ENVIRONMENTAL RELEASES

Scenario#: 2 Number of Release Sites:

Release Activity: Proc1: PDM1

Release Description: WATER LANDFILL

Non

- sludge/Sludge STACK F UGITIVE

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:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 10

- 0235

SI TE

- SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER: 2 RELEASE ACTIVITY: Proc1: PDM1

FACILITY NAME:

FACILITY L OCATION:

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)

0.00 126.00

AQUATIC EXPOSURE ESTIMATES

- SURFACE WATER

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT

FLOW (MLD)

CONCENTRATION (μg/L) 9.04E

- 05 3.18E

- 04 5.14E

- 04 5.52E

- 04 NA

DRINKING WATER INGESTION AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water

Results Drinking Water

Units Fish Ingestion

Results Fish Ingestion

Units

Cancer

LADD pot 3.8 7E

- 11 mg/kg/day 2.09E

- 11 mg/kg/day

LADC pot 1.98E

- 09 mg/L 2.50E

- 07 mg/kg

Acute

ADR pot 2.65E

- 08 mg/kg/day 2.05E

- 08 mg/kg/day

Surface Water Comments:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P

- 10

- 0235

SITE

- SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER: 2 RELEASE ACTIVITY: Proc1: PDM1

FACILITY NAME:

FACILITY LOCATION:

RECEIVING STREAM NAME:

REACH NUMBER: FACILITY ON RE ACH: DISCHARGE TYPE:

NPDES PERMIT NUMBER: GAGING STATION ID:

GAGING STATION

PERIOD OF RECORD: GAGING STATION

NUMBER OF

OBSERVATIONS: NUMBER OF STATIONS ON

REACH:

50 %ile FLOW (MLD): 10 %ile FLOW (MLD): EFFLUENT FLOW (MLD):

RESULTS

COC (μg/L) Percent of Year

COC Exceeded Number of Days

COC Exceeded Release days/year Pre

- treatment Loading (kg/site/day) Waste Water Treatment (%)

1.00June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 10

- 0235 Assessor : Flessner/SD

ENVIRONMENTAL RELEASES

Scenario#: 3 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:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 10

- 0235

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 3 Number of Sites: RELEASE ACTIVITY: Proc2:

Max ADR

SIC

- CODE DESCRIPTION:

SIC

- CODE (S): EXPOSE D POPULATION: Adult

WWT

REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT

RELEASE (kg/site/day) DWT

(%) BCF (L/kg)

0.00 126.00

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 4.66E

- 02 0.13 0.23 0.26

ALL 10 0.41 0.82 1.86 1.65

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 9.97E

- 10 8.71E

- 09 mg/kg/day 5.38E

- 10 4.70E

- 09 mg/kg/day

LADC pot 5.11E

- 08 4.47E

- 07 mg/L 6.44E

- 06 5.63E

- 05 mg/kg

Acute

ADR pot 1.11E

- 05 6.82E

- 05 mg/kg/day 1.06E

- 05 9.23E

- 05 mg/kg/day

SIC Code Comments:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 10

- 0235 Assessor: Flessner/SD

ENVIRONMENTAL RELEASES

Scenario#: 4 Number of Release Sites:

Release Activity: Proc2: PDM1

Release Description: WATER LANDFILL

Non

- sludge/Sludge STACK FUGITIVE

Total Releases:

(kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non

- sludge/Sludge

Release Day s/yr:

Per Site Release:

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

Remarks:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 10

- 0235

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 4 Number of Sites: RELEASE ACTIVITY: Proc2:

PDM1

SIC

- CODE DESCRIPTION:

SIC

- CODE (S): EXPOSED POPULATION: Adult

WWT

REMOVAL (%) RELEASE

DAYS PR ETREATMENT

RELEASE (kg/site/day) POSTTREATMENT

RELEASE (kg/site/day) DWT

(%) BCF (L/kg)

0.00 126.00

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 6.04E

- 04 1.73E

- 03 2.92E

- 03 3.31E

- 03

ALL 10 5.28E

- 03 1.06E

- 02 2.41E

- 02 2.13E

- 02

DRINKING WATER AND FISH INGE STION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking

Water Units Fish Ingestion Results Fish Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 2.58E

- 10 2.26E

- 09 mg/kg/day 1.39E

- 10 1.22E

- 09 mg/kg/day

LADC pot 1.32E

- 08 1.16E

- 07 mg/ L 1.67E

- 06 1.46E

- 05 mg/kg

Acute

ADR pot 1.44E

- 07 8.84E

- 07 mg/kg/day 1.37E

- 07 1.20E

- 06 mg/kg/day

SIC Code Comments:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P- 10

- 0235

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO # : 4 R ELEASE ACTIVITY: Proc2: PDM1

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 Wa ter Treatment (%) High/Avg Analysis

1.00 HighJune 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 10

- 0235 Assessor: Flessner/SD

ENVIRONMENTAL RELEASES

Scenario#: 5 Number of Release Sites:

Release A ctivity: Proc3: 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:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 10

- 0235

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

S CENARIO #: 5 Number of Sites: RELEASE ACTIVITY: Proc3:

Max ADR

SIC

- CODE DESCRIPTION:

SIC

- CODE (S): EXPOSED POPULATION: Adult

WWT

REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT

R ELEASE (kg/site/day) DWT

(%) BCF (L/kg)

0.00 126.00

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 1.26E

- 03 3.60E

- 03 6.09E

- 03 6.89E

- 03

ALL 10 1.10E

- 02 2.20E

- 02 5.01E

- 02 4.44E

- 02

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drin king

Water Units Fish Ingestion Results Fish Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 5.38E

- 10 4.70E

- 09 mg/kg/day 2.91E

- 10 2.54E

- 09 mg/kg/day

LADC pot 2.76E

- 08 2.41E

- 07 mg/L 3.48E

- 06 3.04E

- 05 mg/kg

Acute

ADR pot 3.01E

- 07 1.84E

- 06 mg/kg/day 2.85E

- 07 2.49E

- 06 mg/kg/day

SIC Code Comments:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 10

- 0235 Assessor: Flessner/SD

ENVIRONMENTAL RELEASES

Scenario#: 6 Number of Release Sites:

Release Activity: Proc3: 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:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 10

- 0235

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 6 Number of S ites: RELEASE ACTIVITY: Proc3:

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)

0.00 126.00

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 1.26E

- 03 3.60E

- 03 6.09E

- 03 6.89E

- 03

ALL 10 1.10E

- 02 2.20E

- 02 5.01E

- 02 4.44E

- 02

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking

Water Units Fish Inge stion Results Fish Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 5.38E

- 10 4.70E

- 09 mg/kg/day 2.91E

- 10 2.54E

- 09 mg/kg/day

LADC pot 2.76E

- 08 2.41E

- 07 mg/L 3.48E

- 06 3.04E

- 05 mg/kg

Acute

ADR pot 3.01E

- 07 1.84E

- 06 mg/kg/day 2.85E

- 07 2.49E

- 06 mg/kg/da y

SIC Code Comments:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P- 10

- 0235

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO # : 6 RELEASE ACTIVITY: Proc3: PDM1

SIC CODE DESCRIPTION:

ASSOCIAT ED 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

1.00 HighJune 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 10

- 0235 Assessor: Flessner/SD

ENVIRONMENTAL RELEASES

Scenario#: 7 Number of Release Sites:

Release Activity: Use: Max ADR

Release Description: WATER LANDFILL

Non

- sludge/Sludge STACK FUGITIVE

Total Releases:

(kg/yr) (k g/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:June 2, 2010

INITIAL REVIEW EXPOSURE REPO RT

Chemical ID : P- 10

- 0235

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 7 Number of Sites: RELEASE ACTIVITY: Use: Max

ADR

SIC

- CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disc h.)

SIC

- CODE (S): Subset of 4952 EXPOSED POPULATION: Adult

WWT

REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT

RELEASE (kg/site/day) DWT

(%) BCF (L/kg)

0.00 126.00

AQUATIC EXPOSU RE 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 6.25E

- 06 1.45E

- 05 2.30E

- 05 2.73E

- 05

ALL 10 39.60 13.29 7.76 7.57 4.55E

- 05 1.35E

- 04 2.32E

- 04 2.38E

- 04

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 3.34E

- 11 2.43E

- 10 mg/kg/day 1.80E

- 11 1.31E

- 10 mg/kg/day

LADC pot 1.71E

- 09 1.25E

- 08 mg/L 2.16E

- 07 1.57E

- 06 mg/kg

Acute

ADR pot 1.21E

- 09 1.13E

- 08 mg/kg/day 1.41E

- 09 1.03E

- 08 mg/kg/day

SIC Code Comments:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 10

- 0235 Assessor: Flessner/SD

ENVIRONMENTAL RELEASES

Scenario#: 8 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:June 2, 2010

INITIAL REVIEW EXPOSURE REP ORT

Chemical ID : P- 10

- 0235

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

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

PDM1

SIC

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

SIC

- CODE (S): Subset of 4952 EXPOSED POPULATION: Adult

WWT

REMOVAL (%) RELEASE

DAYS PRETREATMENT

RELEASE (kg/site/day) POSTTREATMENT

RELEASE (kg/site/day) DWT

(%) BCF (L/kg)

0.00 126.00

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 6.25E

- 06 1.45E

- 05 2.30E

- 05 2.73E

- 05

ALL 10 39.60 13.29 7.76 7.57 4.55E

- 05 1.35E

- 04 2.32E

- 04 2.38E

- 04

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 3.34E

- 11 2.43E

- 10 mg/kg/day 1.80E

- 11 1.31E

- 10 mg/kg/day

LADC pot 1.71E

- 09 1.25E

- 08 mg/L 2.16E

- 07 1.57E

- 06 mg/kg

Acute

ADR pot 1.21E

- 09 1.13E

- 08 mg/kg/day 1.41E

- 09 1.03E

- 08 mg/kg/day

SIC Code Comments:June 2, 2010

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P- 10

- 0235

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO # : 8 RELEASE ACTIVITY: Use: PDM1

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

ASSOCIATED SIC CODES: Subset of 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 HighJune 2, 2010June 2, 2010June 2, 2010