6/21/13 Page of



### POST FOCUS EXPOSURE REPORT

Chemical ID: P-13-0473 Reviewer: Cinalli/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 =

27 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/da

y mg/kg/day mg/kg/da

y mg/kg/da y

Mfg: Max LADD --- --- --- --- --- --- 5.10E-04 --- --- --- ---

Use: Max ADR: max acute eco 4.74E-04 --- 5.62E-06 --- 1.04E+01 --- --- --- --- --- ---

Use: PDM1 --- --- --- --- 1.04E+01 --- --- --- --- --- Use: Max LADD --- 8.89E-07 --- 1 .20E-08 --- --- --- --- --- --- ---

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) No NA Total Release After Treatment (kg/yr) No NA Consumer Use? No6/21/13 Page of



### Fate test recommendations?: (default is NA)6/21/13 Page of

POST FOCUS EXPOSURE REPORT

Chemical ID: P-13-0473 Assessor: Cinalli/SD

ENVIRONMENTAL RELEASES

Scenario#:1 Number of Release Sites: Release Activity: MFG: 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:6/21/13 Page of

POST FOCUS EXPOSURE REPORT Chemical ID: P-13-0473

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES

SCENARIO #: 1 ACTIVITY: MFG: 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) 5.10E-04 30.00 75.00 71.80 1.40 LADC pot (mg/L) 2.62E-02 30.00 75.00 NA NA

REMARKS:6/21/13 Page of

POST FOCUS EXPOSURE REPORT

Chemical ID: P-13-0473 Assessor: Cinalli/SD

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:6/21/13 Page of

POST FOCUS EXPOSURE REPORT

Chemical ID: P-13-0473

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 EX POSED 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 50 125.56 44.02 26.80 22.53 8.76E-02 0.25 0.41 0.49

ALL 10 11.11 1.94 1.06 0.96 0.99 5.67 10.38 11.46

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 7.86E-08 8.89E-07 mg/kg/day 1.06E-09 1.20E-08 mg/kg/day

LADC pot 4.03E-06 4.56E-05 mg/L 1.27E-05 1.44E-04 mg/kg

Acute

ADR pot 2.09E-05 4.74E-04 mg/kg/day 4.97E-07 5.62E-06 mg/kg/day

SIC Code Comments:6/21/13 Page of

POST FOCUS EXPOSURE REPORT

Chemical ID: P-13-0473 Assessor: Cinalli/SD

ENVIRONMENTAL RELEASES

Scenario#:3 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:6/21/13 Page of

POST FOCUS EXPOSURE REPORT

Chemical ID: P-13-0473

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

SCENARIO #: 3 Number of Site s: RELEASE ACTIVITY:USE: PDM1

SIC-CODE DESCRIPTION: POTW's (All facilities) SIC-CODE (S): 4952 EX POSED 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 50 125.56 44.02 26.80 22.53 8.76E-02 0.25 0.41 0.49

ALL 10 11.11 1.94 1.06 0.96 0.99 5.67 10.38 11.46

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 7.86E-08 8.89E-07 mg/kg/day 1.06E-09 1.20E-08 mg/kg/day

LADC pot 4.03E-06 4.56E-05 mg/L 1.27E-05 1.44E-04 mg/kg

Acute

ADR pot 2.09E-05 4.74E-04 mg/kg/day 4.97E-07 5.62E-06 mg/kg/day

SIC Code Comments:6/21/13 Page of

POST FOCUS EXPOSURE REPORT

Chemical ID: P-13-0473

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 3 RELEASE ACTIVITY: USE: PDM1

SIC CODE DESCRI PTION: POTW's (All facilities)

ASSOCIATED SIC CODES: 4952

SIC CODE RESULTS

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

27.00 High6/21/13 Page of

POST FOCUS EXPOSURE REPORT

Chemical ID: P-13-0473 Assessor: Cinalli/SD

ENVIRONMENTAL RELEASES

Scenario#:4 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:6/21/13 Page of

POST FOCUS EXPOSURE REPORT

Chemical ID: P-13-0473

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

SCENARIO #: 4 Number of Sites: RELEASE ACTIVITY:USE: Max LADD

SIC-CODE DESCRIPTION: POTW's (All facilities) SIC-CODE (S): 4952 EX POSED 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 50 125.56 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 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 7.86E-08 8.89E-07 mg/kg/day 1.06E-09 1.20E-08 mg/kg/day

LADC pot 4.03E-06 4.56E-05 mg/L 1.27E-05 1.44E-04 mg/kg

Acute

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

SIC Code Comments: