6/7/13 Page of



### INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P -13-0465 Reviewer: Wong/AG

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

Exposure

Scenario 1 Water Landfil l 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

MFG: max

acute eco --- --- --- --- 1.79E+00

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

USE: max

acute eco --- --- --- --- 5.92E+02

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

USE: PDM1

--- --- --- --- 5.92E+02

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

USE: PDM2

--- --- --- --- 6.32E+0 1

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

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. Mul tiple 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 lo west flow within a ten year period.

Remarks:6/7/13 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0465 Assessor: Wong/AG

ENVIRONMENTAL RELEASES

Scenario#: 1 Number of Release Sites:

Release Activity: MFG: Max ADR

Releas e 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:6/7/13 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0465

SI TE

- SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER: 1 RELEASE ACTIVITY: MFG: Max ADR

FACI LITY NAME:

FACILITY LOCATION:

RECEIVING WATER NAME:

REACH NUMBER: FACILITY ON REACH: DISCHARGE TYPE:

NPDES PERMIT #: EXPOSED POPULATION: Adult

WWT

REMOVAL

(%) RE LEASE

DAYS PRETREATMENT

RELEASE

(kg/site/day) POSTTREATMENT

RELEASE

(kg/site/day) DWT

(%) BCF

(L/kg)

0.00 961.00

AQUATIC EXPOSURE ESTIMATES

- SURFACE WATER

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PL ANT

FLOW (MLD)

CONCE NTRATION (μg/L) 0.80 1.09 1.79 2.16 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 2.21E

- 07 mg/kg/day 9.11E

- 07 mg/kg/day

LADC pot 1.13E

- 05 mg/L 1.09E

- 02 mg/kg

Acute

ADR pot 9.12E

- 05 mg/kg/day 1.37E

- 03 mg/kg/day

Surface Water Comments:6/7/13 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0465 Assessor: Wong/AG

ENVIRONMENTAL RELEASES

Scenario#: 2 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:6/7/13 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0465

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 2 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

RELEA SE

(kg/site/day) POSTTREATMENT

RELEASE

(kg/site/day) DWT

(%) BCF

(L/kg)

0.00 961.00

AQUATIC EXPOSURE ESTIMATES

- SURFACE WATER

PLANT

TYPE % ILE

FACILITY STREAM FLOW (MLD) STREAM CONC. (μg/l)

Harmonic

Mean 30Q 5 7Q10 1Q10 Harmonic

Mean 30Q5 7Q10 1Q10

ALL 50 125.56 44.02 26.80 22.53 4.99 14.24 23.40 27.83

ALL 10 11.11 1.94 1.06 0.96 56.44 323.20 591.51 653.12

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Dr inking

Water Units Fish Ingestion Results Fish

Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 4.80E

- 06 5.43E

- 05 mg/kg/day 1.98E

- 05 2.24E

- 04 mg/kg/day

LADC pot 2.46E

- 04 2.78E

- 03 mg/L 0.24 2.67 mg/kg

Acute

ADR pot 1.19E

- 03 2.70E

- 02 mg/kg/day 8.62E

- 03 9.74E

- 02 mg/kg/day

SIC Code Comments:6/7/13 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0465 Assessor: Wong/AG

ENVIRONMENTAL RELEASES

Scenario#: 3 Number of Release Sites:

Release Activity: USE: PDM1

Release De scription: 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:6/7/13 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0465

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 3 Number of Sites: RELEAS E 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)

0.00 961.00

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 50 125.56 44.02 26.80 22.53 4.99 14.24 2 3.40 27.83

ALL 10 11.11 1.94 1.06 0.96 56.44 323.20 591.51 653.12

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 4.80E

- 06 5.43E

- 05 mg/kg/day 1.98E

- 05 2.24E

- 04 mg/kg/day

LADC pot 2.46E

- 04 2.78E

- 03 mg/L 0.24 2.67 mg/kg

Acute

ADR pot 1.19E

- 03 2.70E

- 02 mg/kg/day 8.62E

- 03 9.74E

- 02 mg/kg/day

SIC Code Comments:6/7/13 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P- 13

- 0465

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO # : 3 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 Numb er of

Days COC

Exceeded Release

days/year Loading

(kg/site/day) Waste Water

Treatment (%) High/Avg

Analysis

1.00 High6/7/13 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0465 Assessor: Wong/AG

ENVIRONMENTAL RELEASES

Sc enario#: 4 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:6/7/13 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID : P- 13

- 0465

SIC

- CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 4 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 PRETREATMEN T

RELEASE

(kg/site/day) POSTTREATMENT

RELEASE

(kg/site/day) DWT

(%) BCF

(L/kg)

0.00 961.00

AQUATIC EXPOSURE ESTIMATES

- SURFACE WATER

PLANT

TYPE % ILE

FACILITY STREAM FLOW (MLD) STREAM CONC. (μg/l)

Harmoni c

Mean 30Q5 7Q10 1Q10 Harmonic

Mean 30Q5 7Q10 1Q10

ALL 50 125.56 44.02 26.80 22.53 0.53 1.52 2.50 2.97

ALL 10 11.11 1.94 1.06 0.96 6.03 34.54 63.21 69.79

DRINKING WATER AND FISH INGESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Result s Drinking

Water Units Fish Ingestion Results Fish

Ingestion

Units

50% 10% 50% 10%

Cancer

LADD pot 2.85E

- 06 3.22E

- 05 mg/kg/day 1.17E

- 05 1.33E

- 04 mg/kg/day

LADC pot 1.46E

- 04 1.65E

- 03 mg/L 0.14 1.59 mg/kg

Acute

ADR pot 1.27E

- 04 2.89E

- 03 mg/kg/day 9 .21E

- 04 1.04E

- 02 mg/kg/day

SIC Code Comments:6/7/13 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P- 13

- 0465

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO # : 4 RELEASE ACTIVITY: USE: PDM2

SIC CODE DESCRIPTION: POTW's (All facilitie s)

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 High