### This report revised on 6/2/2004 by C. Cinalli using a COC of 200 ppb. Only PDM results changed. Use # 2 days exceendance increase to 57 days. INITIAL REVIEW EXPOSURE REPORT
Case Number: P030141 Assessor: Flessner ENVIRONMENTAL RELEASES Scenario#: 1 Number of Release Sites: 1000. Release Activity: Release Description: WATER LANDFILL INCINER LAND/INCIN FUGITIVE Total Releases: 900.00 0.00 0.00 0.00 0.00 (kg/yr) (kg/yr) (kg/yr) (kg/yr) (kg/yr) Release Days/yr: 50. 0. Per Site Release: 1.80E-02 0.00 0.00 0.00 0.00 (kg/day) (kg/yr) (kg/yr) (kg/yr) (kg/day) Remarks:

Consumer use expected? No, consumer use is not expected.INITIAL REVIEW EXPOSURE REPORT CASE NUMBER:P030141 SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES SCENARIO #:1 RELEASE ACTIVITY: SIC-CODE DESCRIPTION: SIC-CODE (S): EXPOSED POPULATION:Adult

WASTE WATER TREATMENT REMOVAL (%) COC (μg/L) RELEASE DAYS PRE-TREATMENT RELEASE

(kg/day) POST-TREATMENT RELEASE

(kg/day) BCF (L/kg) 17. 200. 50. 0.018 1.49E-02 3.34
AQUATIC EXPOSURE ESTIMATES - SURFACE WATER PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( : g/l) Harmonic

MEAN 30Q5 7Q10 1Q10 Harmonic MEAN 30Q5 7Q10 1Q10 ALL 50 311.58 116.44 75.70 61.91 4.79E-02 0.13 0.20 0.24 ALL 10 32.75 11.98 7.19 5.98 0.46 1.25 2.08 2.50

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 5.12E-08 4.87E-07 mg/kg/day 7.33E-10 6.98E-09 mg/kg/day LADC pot2.63E-06 2.50E-05 mg/L 8.78E-06 8.35E-05 mg/kg Chronic Non-Cancer ADD pot 1.28E-07 1.22E-06 mg/kg/day 1.83E-09 1.74E-08 mg/kg/day ADC pot6.57E-06 6.25E-05 mg/L 2.19E-05 2.09E-04 mg/kg Acute ADRpot 1.07E-05 1.04E-04 mg/kg/day 2.88E-07 2.74E-06 mg/kg/day

### This page revised on 6/2/2004 by C. Cinalli using a COC of 200 ppb. POST FOCUS EXPOSURE REPORT CASE NUMBER: P030141

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 1 RELEASE ACTIVITY: SIC CODE DESCRIPTION: ASSOCIATED SIC CODES: SIC CODE RESULTS COC ( : g/L) % yr exceeded Days/yr exceeded Release days/year Loading (kg/site/day) Waste Water Treatment (%) High/Avg Analysis 200.00 1.10E-05 3.80E-05 50 1.80E-02 17.00 HighINITIAL REVIEW EXPOSURE REPORT
Case Number: P030141 Assessor: Flessner ENVIRONMENTAL RELEASES Scenario#: 2 Number of Release Sites: Release Activity: Release Description: WATER LANDFILL INCINER LAND/INCIN FUGITIVE Total Releases: 5000.00 0.00 0.00 0.00 5000.00 (kg/yr) (kg/yr) (kg/yr) (kg/yr) (kg/yr) Release Days/yr: 250. 250. Per Site Release: 5.00 0.00 0.00 0.00 5.00 (kg/day) (kg/yr) (kg/yr) (kg/yr) (kg/day) Remarks:INITIAL REVIEW EXPOSURE REPORT CASE NUMBER:P030141 SIC-CODE BASED HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES SCENARIO #:2 RELEASE ACTIVITY: SIC-CODE DESCRIPTION: SIC-CODE (S): EXPOSED POPULATION:Adult

WASTE WATER TREATMENT REMOVAL (%) COC (μg/L) RELEASE DAYS PRE-TREATMENT RELEASE

(kg/day) POST-TREATMENT RELEASE

(kg/day) BCF (L/kg) 17. 200 250. 5. 4.15 3.34
AQUATIC EXPOSURE ESTIMATES - SURFACE WATER PLANT TYPE % ILE FACILITY STREAM FLOW (MLD) STREAM CONC. ( : g/l) Harmonic

MEAN 30Q5 7Q10 1Q10 Harmonic MEAN 30Q5 7Q10 1Q10 ALL 50 465.15 164.37 108.17 88.24 8.92 25.25 38.37 47.03 ALL 10 51.92 21.71 13.30 11.01 79.93 191.16 312.03 376.93

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 4.77E-05 4.27E-04 mg/kg/day 6.82E-07 6.11E-06 mg/kg/day LADC pot2.44E-03 2.19E-02 mg/L 8.16E-03 7.31E-02 mg/kg Chronic Non-Cancer ADD pot 1.19E-04 1.07E-03 mg/kg/day 1.71E-06 1.53E-05 mg/kg/day ADC pot6.11E-03 5.47E-02 mg/L 2.04E-02 0.18 mg/kg Acute ADRpot 2.11E-03 1.60E-02 mg/kg/day 5.35E-05 4.80E-04 mg/kg/day

### This page revised on 6/2/2004 by C. Cinalli using a COC of 200 ppb. POST FOCUS EXPOSURE REPORT CASE NUMBER: P030141

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 2 RELEASE ACTIVITY: SIC CODE DESCRIPTION: ASSOCIATED SIC CODES: SIC CODE RESULTS COC ( : g/L) % yr exceeded Days/yr exceeded Release days/year Loading (kg/site/day) Waste Water Treatment (%) High/Avg Analysis 200.00 15.71 57 250 5.00 17.00 High

REMARK: The concentration of concern (COC ) is exceeded 20 or more days per year.INITIAL REVIEW EXPOSURE REPORT CASE NUMBER:P030141

INHALATION EXPOSURE ESTIMATES FROM FUGITIVE RELEASES

SCENARIO #:2 RELEASE ACTIVITY: RELEASE DESCRIPTION: METHOD OF CALCULATION:Turner EXPOSED POPULATION:Adult

NUMBER OF SITES % TREATMENT TYPE OF REMOVAL PRE-TREAT RELEASE (kg/yr) POST-TREAT RELEASE (kg/yr) 4. 0.00 None 5000.00 5000.00

Exposure Units Results ASSUMPTIONS ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr) Cancer LADD pot(mg/kg/day) 4.60E-04 30.00 75.00 71.80 0.55 LADC pot(mg/m 3 ) 2.50E-03 30.00 75.00 NA NA Chronic Non-Cancer ADD pot(mg/kg/day) 1.15E-03 30.00 30.00 71.80 0.55 ADC pot(mg/m 3 ) 6.25E-03 30.00 30.00 NA NA