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### INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P-13-0945c Reviewer: Flessner/SS Results Table: Dose, Concentration, and Days Exceeded Results Summary Exposure Scenario 1 Water Landfill Stack Air Fugitive Air Drinking Water Fish Ingestion ADR LADD ADR LADD 7Q10 4 CC = 58 PDM Days Exceede d 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 acute
eco 2.24E-05 --- 6 .60E-07 --- 4.00E-01 --- --- --- --- --- ---

PDM1 --- --- --- --- 4.00E-01 --- --- --- --- ---

Max LADD --- 2 .21E-07 --- 3 .00E-09 --- --- --- --- --- --- ---

max acute eco 1.28E+00 --- 2 .68E-02 --- 2.62E+04 --- --- --- --- --- --- Max LADD --- 1 .01E-03 --- 1 .36E-05 --- --- 4 .37E-04 --- --- --- --- 1 Exposure scenario titles consist of release activity followed by exposure calculation abbreviation. 2 Release activities are from engineering report's Manuf acturing (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 (A DR), Lifetime Average Daily Dose (LADD), and Probabilistic Dilution Model (PDM). Th ere 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 7Q 10 streamflow, which is defined as the average daily streamflow of the seven consecutive days of lowest flow within a ten year period.

Remarks: 

### Results Table: Exposure Based (X B)/Persistent (P2B2) Criteria

Parameter Exp Based Persistent Exceedance Value Drinking (Surface) Wate r Dose (mg/kg/day) No NA Fish Ingestion Dose (mg/kg/day) No NA Inhalation Dose (mg/kg/day) No NA Groundwater Dose (mg/kg/day) No NA Surface Water Release After Treatment (kg/yr) Total Release After Treatment (kg/yr) No NA Consumer Use? No 

### Fate test recommendations?: (default is NA)10/30/13 page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0945 Assessor: Flessner/SS
ENVIRONMENTAL RELEASES
Scenario#:1 Number of Release Sites: Release Activity: 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:10/30/13 page of

INITIAL REVIEW EX POSURE REPORT

Chemical ID: P-13-0945 SITE-SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER:1 RELEASE ACTIVI TY: Max ADR
FACILITY NAME:
FACILITY LOCATION:
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 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT FLOW (MLD) CONCENTRATION ( μ g/L) 0.12 0.27 0.40 0.49 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 3.00E-09 mg/kg/day
LADC pot 1.13E-05 mg/L 3.59E-05 mg/kg
Acute

ADR pot 2.24E-05 mg/kg/day 6.60E-07 mg/kg/day

Surface Water Comments:10/30/13 page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0945 Assessor: Flessner/SS
ENVIRONMENTAL RELEASES
Scenario#:2 Number of Release Sites: Release Activity: 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:10/30/13 page of

INITIAL REVIEW EX POSURE REPORT

Chemical ID: P-13-0945 SITE-SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER:2 RELEASE ACTI VITY: PDM1
FACILITY NAME:
FACILITY LOCATION:
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 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT FLOW (MLD) CONCENTRATION ( μ g/L) 0.12 0.27 0.40 0.49 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 3.00E-09 mg/kg/day
LADC pot 1.13E-05 mg/L 3.59E-05 mg/kg
Acute

ADR pot 2.24E-05 mg/kg/day 6.60E-07 mg/kg/day

Surface Water Comments:10/30/13 page of

INITIAL REVIEW EX POSURE REPORT Chemical ID: P-13-0945

SITE-SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER: 2 RELEASE ACTI VITY: PDM1
FACILITY NAME:
FACILITY LOCATION:
RECEIVING STREAM NAME:
REACH NUMBER: FACILITY ON REACH: DISCHARGE TYPE:
NPDES PERMIT NUMBER: GAGING STATION ID: GAGING STATION PERIOD OF RECORD: GAGING STATION NUMBER OF OBSERVATIONS: NUMBER OF STATIONS ON REACH:

MEAN FLOW (MLD): 7q10 FLOW (MLD): EFFLUENT FLOW (MLD):

RESULTS

COC ( μ g/L) Percent of Year COC Exceeded Number of Days COC Exceeded Release days/year Pre-treatment Loading (kg/site/day) Waste Water Treatment (%)

58.0010/30/13 page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0945 Assessor: Flessner/SS
ENVIRONMENTAL RELEASES
Scenario#:3 Number of Release Sites: Release Activity: 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:10/30/13 page of

INITIAL REVIEW EX POSURE REPORT

Chemical ID: P-13-0945 SITE-SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER:3 RELEASE ACTIVI TY: Max LADD
FACILITY NAME:
FACILITY LOCATION:
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 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT FLOW (MLD) CONCENTRATION ( μ g/L) N/A N/A N/A N/A 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 3.00E-09 mg/kg/day
LADC pot 1.13E-05 mg/L 3.59E-05 mg/kg
Acute

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

Surface Water Comments:10/30/13 page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0945 Assessor: Flessner/SS
ENVIRONMENTAL RELEASES
Scenario#:4 Number of Release Sites: Release Activity: 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:10/30/13 page of

INITIAL REVIEW EX POSURE REPORT

Chemical ID: P-13-0945

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

SCENARIO #: 4 Number of Site s: RELEASE ACTIVITY: 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 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10
ALL 50 158.87 347.45 520.50 639.89
ALL 10 4715.92 1.53E+04 2.62E+04 2.82E+04

DRINKING WATER AND FISH IN GESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 3.39E-05 1.01E-03 mg/kg/day 4.60E-07 1.36E-05 mg/kg/day
LADC pot 1.74E-03 5.17E-02 mg/L 5.50E-03 0.16 mg/kg
Acute
ADR pot 2.90E-02 1.28 mg/kg/day 9.02E-04 2.68E-02 mg/kg/day

SIC Code Comments:10/30/13 page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0945 Assessor: Flessner/SS
ENVIRONMENTAL RELEASES
Scenario#:5 Number of Release Sites: Release Activity: 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:10/30/13 page of

INITIAL REVIEW EX POSURE REPORT

Chemical ID: P-13-0945

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

SCENARIO #: 5 Number of Site s: RELEASE ACTIVITY: 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 3.16

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER
PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( μ g/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 IN GESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%
Cancer
LADD pot 3.39E-05 1.01E-03 mg/kg/day 4.60E-07 1.36E-05 mg/kg/day
LADC pot 1.74E-03 5.17E-02 mg/L 5.50E-03 0.16 mg/kg
Acute
ADR pot N/A N/A mg/kg/day N/A N/A mg/kg/day

SIC Code Comments:10/30/13 page of

INITIAL REVIEW EX POSURE REPORT Chemical ID: P-13-0945

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES

SCENARIO #: 5 ACTIVITY: 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

ASSUMPTIONS Exposure Units Results ED (years) AT (years) BW (kg) IR (L/day) Cancer LADD pot (mg/kg/day) 4.37E-04 30.00 75.00 71.80 1.40 LADC pot (mg/L) 2.24E-02 30.00 75.00 NA NA

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