9/23/2011 Page 1 of 68 

STANDARD REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 Reviewer: Bevington/BC 

 

 

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

Exposure Scenario1 Water Landfil

l 

Stack Air Fugitive Air 

Drinking Water Fish Ingestion 

ADR LADD ADR LADD 7Q104 

CC = 420 

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 ADR: 

max acute eco 

1.03E-04 --- --- --- 1.69E+00 --- --- 3.20E-01 --- --- --- 

Max LADD --- 5.02E-08 --- --- --- --- --- --- 3.51E-04 --- --- 

Max ADR: 

max acute eco 

3.87E-02 --- --- --- 8.47E+02 --- --- --- --- --- --- 

PDM1 --- --- --- --- 4.48E+01 --- --- --- --- --- 

Max LADD --- 5.55E-06 --- --- --- --- 2.68E-06 --- --- --- --- 

Max ADR: 

max acute eco 

3.90E-02 --- --- --- 8.54E+02 --- --- --- --- --- --- 

PDM1 --- --- --- --- 5.19E+01 --- --- --- --- --- 

Max LADD --- 1.08E-05 --- --- --- --- 5.22E-06 --- --- --- --- 

Max ADR: 

max acute eco 

9.70E-01 --- --- --- 2.12E+04 --- --- --- --- --- --- 

PDM1 --- --- --- --- 2.12E+04 --- --- --- --- --- 

Max LADD --- 1.08E-03 --- --- --- --- --- --- --- --- --- 

Max ADR: 

max acute eco 

2.58E-04 --- --- --- 5.66E+00 --- --- 1.49E-05 --- 8.79E-06 --- 

Max LADD --- 2 .31E-08 --- --- --- --- 2 .65E-07 --- 6 .52E-09 --- 1.31E-07 

Max ADR: 

max acute eco 

7.34E-02 --- --- --- 1.61E+03 --- --- 1.06E-03 --- --- --- 

Max LADD --- 3 .28E-06 --- --- --- --- 3 .94E-09 --- 2 .33E-07 --- --- 

Max ADR: 

max acute eco 

7.32E-03 --- --- --- 1.60E+02 --- --- 4.21E-04 --- 8.55E-03 --- 

PDM1 --- --- --- --- 1.60E+02 --- --- --- --- --- 

Max LADD --- 8 .17E-05 --- --- --- --- 3 .94E-05 --- 2 .31E-05 --- 1.88E-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 

labels. 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 
9/23/2011 Page 2 of 68 

 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 lowest flow within a ten year period. 

Remarks: 

Results Table: Exposure Based (XB)/Persistent (P2B2) Criteria 

Parameter Exp Based Persistent Exceedance Value 

Drinking (Surface) Water Dose (mg/kg/day) 

Fish Ingestion Dose (mg/kg/day) No No 

Inhalation Dose (mg/kg/day) 

Groundwater Dose (mg/kg/day) No No 

Surface Water Release After Treatment (kg/yr) 

Total Release After Treatment (kg/yr) 

Consumer Use? No 

Fate test recommendations?: (default is NA)
9/23/2011 Page 3 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

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: 
9/23/2011 Page 4 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

SITE-SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO NUMBER:1 RELEASE ACTIVITY: 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 0.00 

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER 

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT 

FLOW (MLD) 

CONCENTRATION (μg/L) 0.47 1.24 1.69 2.11 NA 

DRINKING WATER INGESTION AND FISH INGESTION EXPOSURE ESTIMATES 

Exposure Units 

Drinking Water 

Results 

Drinking Water 

Units 

Fish Ingestion 

Results 

Fish Ingestion 

Units 

Cancer 

LADDpot 5.02E-08 mg/kg/day 0.00 mg/kg/day 

LADCpot 2.57E-06 mg/L 0.00 mg/kg 

Acute 

ADRpot 1.03E-04 mg/kg/day 0.00 mg/kg/day 

Surface Water Comments: 
9/23/2011 Page 5 of 68 

INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT) 

SCENARIO #: 1 RELEASE ACTIVITY: Max ADR 

RELEASE DESCRIPTION: 

METHOD OF CALCULATION: Screen3 

EXPOSED POPULATION: Adult 

Number of Sites: 

Per Site Fugitive Release: kg/site/day 

Fugitive Release Days per Year: days 

% Removal via Fugitive Release: % 

Total Fugitive Release: kg/yr 

Max Annual Average Air Concentration 

(Fugitive): 

0.00 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive): 

0.00 μg/m3

Per Site Stack Release: kg/site/day 

Stack Release Days per Year: days 

% Removal via Stack Release: % 

Total Stack Release: kg/yr 

Max Annual Average Air Concentration (Stack): 4.77 μg/m3

Max 24 Hour Average Air Concentration (Stack): 1740.00 μg/m3

ASSUMPTIONS 

Exposure Units 

Results 

(Stack) 

Results 

(Fugitive) ED 

(years) 

AT 

(years) 

BW 

(kg) 

Inh. Rate 

(m3/hr) 

Cancer 

LADDpot (mg/kg/day) 3.51E-04 N/A 30.00 75.00 71.80 0.55 

LADCpot (mg/m3) 1.91E-03 N/A 30.00 75.00 NA NA 

Acute 

ADRpot (mg/kg/day) 0.32 N/A NA 1 day 71.80 0.55 

Inhalation Comments: 
9/23/2011 Page 6 of 68 

 Stack Parameter Data Fugitive Parameter Data 

Stack Height 10.00 m Release Height: N/A 

Inside Stack 

Diameter: 

0.10 m Length of Release 

Opening: 

N/A 

Stack Gas Exit 

Velocity: 

0.10 m/sec Width of Release 

Opening: 

N/A 

Stack Gas 

Temperature: 

293.00 K 

 

 Meteorological and Terrain Information: 

Surrounding Land Use: Rural 

Terrain Height: 0.00 m 

Distance to Residence of Interest: 100.00 m 

Meteorological Class: Full 

Stability Class: NA 

Wind Speed: NA 

 

 Downwash Information: 

Facility Length: NA m 

Facility Width: NA m 

Facility Height: NA m 
9/23/2011 Page 7 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:2 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: 
9/23/2011 Page 8 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

SITE-SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO NUMBER:2 RELEASE ACTIVITY: 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 0.00 

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER 

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT 

FLOW (MLD) 

CONCENTRATION (μg/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 

LADDpot 5.02E-08 mg/kg/day 0.00 mg/kg/day 

LADCpot 2.57E-06 mg/L 0.00 mg/kg 

Acute 

ADRpot N/A mg/kg/day N/A mg/kg/day 

Surface Water Comments: 
9/23/2011 Page 9 of 68 

INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT) 

SCENARIO #: 2 RELEASE ACTIVITY: Max LADD 

RELEASE DESCRIPTION: 

METHOD OF CALCULATION: Screen3 

EXPOSED POPULATION: Adult 

Number of Sites: 

Per Site Fugitive Release: kg/site/day 

Fugitive Release Days per Year: days 

% Removal via Fugitive Release: % 

Total Fugitive Release: kg/yr 

Max Annual Average Air Concentration 

(Fugitive): 

0.00 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive): 

N/A μg/m3

Per Site Stack Release: kg/site/day 

Stack Release Days per Year: days 

% Removal via Stack Release: % 

Total Stack Release: kg/yr 

Max Annual Average Air Concentration (Stack): 4.77 μg/m3

Max 24 Hour Average Air Concentration (Stack): N/A μg/m3

ASSUMPTIONS 

Exposure Units 

Results 

(Stack) 

Results 

(Fugitive) ED 

(years) 

AT 

(years) 

BW 

(kg) 

Inh. Rate 

(m3/hr) 

Cancer 

LADDpot (mg/kg/day) 3.51E-04 N/A 30.00 75.00 71.80 0.55 

LADCpot (mg/m3) 1.91E-03 N/A 30.00 75.00 NA NA 

Acute 

ADRpot (mg/kg/day) N/A N/A NA 1 day 71.80 0.55 

Inhalation Comments: 
9/23/2011 Page 10 of 68 

 Stack Parameter Data Fugitive Parameter Data 

Stack Height 10.00 m Release Height: N/A 

Inside Stack 

Diameter: 

0.10 m Length of Release 

Opening: 

N/A 

Stack Gas Exit 

Velocity: 

0.10 m/sec Width of Release 

Opening: 

N/A 

Stack Gas 

Temperature: 

293.00 K 

 

 Meteorological and Terrain Information: 

Surrounding Land Use: Rural 

Terrain Height: 0.00 m 

Distance to Residence of Interest: 100.00 m 

Meteorological Class: Full 

Stability Class: NA 

Wind Speed: NA 

 

 Downwash Information: 

Facility Length: NA m 

Facility Width: NA m 

Facility Height: NA m 
9/23/2011 Page 11 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:3 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: 
9/23/2011 Page 12 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 3 Number of Sites: RELEASE ACTIVITY:

Max ADR 

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 0.00 

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 7.15 20.39 33.49 39.84 

ALL 10 11.11 1.94 1.06 0.96 80.78 462.63 846.70 934.90 

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 

LADDpot 3.05E-07 3.45E-06 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 1.57E-05 1.77E-04 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot 1.70E-03 3.87E-02 mg/kg/day 0.00 0.00 mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 13 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:4 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: 
9/23/2011 Page 14 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 4 Number of Sites: RELEASE ACTIVITY:

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 0.00 

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 0.38 1.08 1.77 2.11 

ALL 10 11.11 1.94 1.06 0.96 4.28 24.48 44.81 49.48 

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 

LADDpot 2.02E-07 2.28E-06 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 1.04E-05 1.17E-04 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot 9.02E-05 2.05E-03 mg/kg/day 0.00 0.00 mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 15 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

SIC CODE EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO #: 4 RELEASE ACTIVITY: PDM1 

SIC CODE DESCRIPTION: POTW's (All facilities) 

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 

420.00 High 
9/23/2011 Page 16 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

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: 
9/23/2011 Page 17 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 5 Number of Sites: RELEASE ACTIVITY:

Max LADD 

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 0.00 

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 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 INGESTION EXPOSURE ESTIMATES 

Exposure Units 

Drinking Water Results Drinking 

Water Units Fish Ingestion Results 

Fish 

Ingestion 

Units 

50% 10% 50% 10% 

Cancer 

LADDpot 4.91E-07 5.55E-06 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 2.52E-05 2.85E-04 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot N/A N/A mg/kg/day N/A N/A mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 18 of 68 

INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 

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 

SLUDGE1 

AND DAYS OF 

RELEASE 

(kg/site/day)/(days)

MIGRATION 

DESCRIPTOR2

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 

LADDpot (mg/kg/day) 2.68E-06 30.00 75.00 71.80 1.40 

LADCpot (mg/L) 1.38E-04 30.00 75.00 NA NA 

REMARKS: 

 
9/23/2011 Page 19 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:6 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: 
9/23/2011 Page 20 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 6 Number of Sites: RELEASE ACTIVITY:

Max ADR 

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 0.00 

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 7.21 20.56 33.77 40.17 

ALL 10 11.11 1.94 1.06 0.96 81.46 466.49 853.77 942.71 

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 

LADDpot 7.70E-07 8.70E-06 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 3.95E-05 4.46E-04 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot 1.72E-03 3.90E-02 mg/kg/day 0.00 0.00 mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 21 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:7 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: 
9/23/2011 Page 22 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 7 Number of Sites: RELEASE ACTIVITY:

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 0.00 

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 0.44 1.25 2.05 2.44 

ALL 10 11.11 1.94 1.06 0.96 4.95 28.35 51.89 57.29 

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 

LADDpot 2.34E-07 2.64E-06 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 1.20E-05 1.36E-04 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot 1.04E-04 2.37E-03 mg/kg/day 0.00 0.00 mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 23 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

SIC CODE EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO #: 7 RELEASE ACTIVITY: PDM1 

SIC CODE DESCRIPTION: POTW's (All facilities) 

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 

420.00 High 
9/23/2011 Page 24 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:8 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: 
9/23/2011 Page 25 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 8 Number of Sites: RELEASE ACTIVITY:

Max LADD 

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 0.00 

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 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 INGESTION EXPOSURE ESTIMATES 

Exposure Units 

Drinking Water Results Drinking 

Water Units Fish Ingestion Results 

Fish 

Ingestion 

Units 

50% 10% 50% 10% 

Cancer 

LADDpot 9.57E-07 1.08E-05 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 4.91E-05 5.55E-04 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot N/A N/A mg/kg/day N/A N/A mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 26 of 68 

INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES 

SCENARIO #: 8 ACTIVITY: Max LADD 

RELEASE DESCRIPTION: 

EXPOSED POPULATION: Adult 

NUMBER 

OF 

SITES 

NON-SLUDGE 

LANDFILL 

RELEASE AND 

DAYS OF 

RELEASE 

(kg/site/day)/(days) 

 LANDFILLED 

SLUDGE1 

AND DAYS OF 

RELEASE 

(kg/site/day)/(days)

MIGRATION 

DESCRIPTOR2

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 

LADDpot (mg/kg/day) 5.22E-06 30.00 75.00 71.80 1.40 

LADCpot (mg/L) 2.68E-04 30.00 75.00 NA NA 

REMARKS: 

 
9/23/2011 Page 27 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:9 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: 
9/23/2011 Page 28 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 9 Number of Sites: RELEASE ACTIVITY:

Max ADR 

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 0.00 

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 22.53 179.20 511.13 839.55 998.67 

ALL 10 11.11 1.94 1.06 0.96 2025.20 1.16E+04 2.12E+04 2.34E+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 

LADDpot 9.57E-05 1.08E-03 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 4.91E-03 5.55E-02 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot 4.27E-02 0.97 mg/kg/day 0.00 0.00 mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 29 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:10 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: 
9/23/2011 Page 30 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 10 Number of Sites: RELEASE ACTIVITY:

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 0.00 

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 22.53 179.20 511.13 839.55 998.67 

ALL 10 11.11 1.94 1.06 0.96 2025.20 1.16E+04 2.12E+04 2.34E+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 

LADDpot 9.57E-05 1.08E-03 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 4.91E-03 5.55E-02 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot 4.27E-02 0.97 mg/kg/day 0.00 0.00 mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 31 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

SIC CODE EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO #: 10 RELEASE ACTIVITY: PDM1 

SIC CODE DESCRIPTION: POTW's (All facilities) 

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 

420.00 High 
9/23/2011 Page 32 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:11 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: 
9/23/2011 Page 33 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 11 Number of Sites: RELEASE ACTIVITY:

Max LADD 

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 0.00 

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 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 INGESTION EXPOSURE ESTIMATES 

Exposure Units 

Drinking Water Results Drinking 

Water Units Fish Ingestion Results 

Fish 

Ingestion 

Units 

50% 10% 50% 10% 

Cancer 

LADDpot 9.57E-05 1.08E-03 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 4.91E-03 5.55E-02 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot N/A N/A mg/kg/day N/A N/A mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 34 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:12 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: 
9/23/2011 Page 35 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 12 Number of Sites: RELEASE ACTIVITY:

Max ADR 

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 0.00 

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 4.78E-02 0.14 0.22 0.27 

ALL 10 11.11 1.94 1.06 0.96 0.54 3.09 5.66 6.25 

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 

LADDpot 2.04E-09 2.31E-08 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 1.05E-07 1.18E-06 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot 1.14E-05 2.58E-04 mg/kg/day 0.00 0.00 mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 36 of 68 

INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT) 

SCENARIO #: 12 RELEASE ACTIVITY: Max ADR 

RELEASE DESCRIPTION: 

METHOD OF CALCULATION: Screen3 

EXPOSED POPULATION: Adult 

Number of Sites: 

Per Site Fugitive Release: kg/site/day 

Fugitive Release Days per Year: days 

% Removal via Fugitive Release: % 

Total Fugitive Release: kg/yr 

Max Annual Average Air Concentration 

(Fugitive): 

1.78E-03 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive): 

4.78E-02 μg/m3

Per Site Stack Release: kg/site/day 

Stack Release Days per Year: days 

% Removal via Stack Release: % 

Total Stack Release: kg/yr 

Max Annual Average Air Concentration (Stack): 8.86E-05 μg/m3

Max 24 Hour Average Air Concentration (Stack): 8.08E-02 μg/m3

ASSUMPTIONS 

Exposure Units 

Results 

(Stack) 

Results 

(Fugitive) ED 

(years) 

AT 

(years) 

BW 

(kg) 

Inh. Rate 

(m3/hr) 

Cancer 

LADDpot (mg/kg/day) 6.52E-09 1.31E-07 30.00 75.00 71.80 0.55 

LADCpot (mg/m3) 3.54E-08 7.12E-07 30.00 75.00 NA NA 

Acute 

ADRpot (mg/kg/day) 1.49E-05 8.79E-06 NA 1 day 71.80 0.55 

Inhalation Comments: 
9/23/2011 Page 37 of 68 

 Stack Parameter Data Fugitive Parameter Data 

Stack Height 10.00 m Release Height: 3.00 m 

Inside Stack 

Diameter: 

0.10 m Length of Release 

Opening: 

10.00 m 

Stack Gas Exit 

Velocity: 

0.10 m/sec Width of Release 

Opening: 

10.00 m 

Stack Gas 

Temperature: 

293.00 K 

 

 Meteorological and Terrain Information: 

Surrounding Land Use: Rural 

Terrain Height: 0.00 m 

Distance to Residence of Interest: 100.00 m 

Meteorological Class: Full 

Stability Class: NA 

Wind Speed: NA 

 

 Downwash Information: 

Facility Length: NA m 

Facility Width: NA m 

Facility Height: NA m 
9/23/2011 Page 38 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:13 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: 
9/23/2011 Page 39 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 13 Number of Sites: RELEASE ACTIVITY:

Max LADD 

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 0.00 

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 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 INGESTION EXPOSURE ESTIMATES 

Exposure Units 

Drinking Water Results Drinking 

Water Units Fish Ingestion Results 

Fish 

Ingestion 

Units 

50% 10% 50% 10% 

Cancer 

LADDpot 2.04E-09 2.31E-08 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 1.05E-07 1.18E-06 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot N/A N/A mg/kg/day N/A N/A mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 40 of 68 

INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES 

SCENARIO #: 13 ACTIVITY: Max LADD 

RELEASE DESCRIPTION: 

EXPOSED POPULATION: Adult 

NUMBER 

OF 

SITES 

NON-SLUDGE 

LANDFILL 

RELEASE AND 

DAYS OF 

RELEASE 

(kg/site/day)/(days) 

 LANDFILLED 

SLUDGE1 

AND DAYS OF 

RELEASE 

(kg/site/day)/(days)

MIGRATION 

DESCRIPTOR2

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 

LADDpot (mg/kg/day) 2.65E-07 30.00 75.00 71.80 1.40 

LADCpot (mg/L) 1.36E-05 30.00 75.00 NA NA 

REMARKS: 

 
9/23/2011 Page 41 of 68 

INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT) 

SCENARIO #: 13 RELEASE ACTIVITY: Max LADD 

RELEASE DESCRIPTION: 

METHOD OF CALCULATION: Screen3 

EXPOSED POPULATION: Adult 

Number of Sites: 

Per Site Fugitive Release: kg/site/day 

Fugitive Release Days per Year: days 

% Removal via Fugitive Release: % 

Total Fugitive Release: kg/yr 

Max Annual Average Air Concentration 

(Fugitive): 

1.78E-03 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive): 

N/A μg/m3

Per Site Stack Release: kg/site/day 

Stack Release Days per Year: days 

% Removal via Stack Release: % 

Total Stack Release: kg/yr 

Max Annual Average Air Concentration (Stack): 8.86E-05 μg/m3

Max 24 Hour Average Air Concentration (Stack): N/A μg/m3

ASSUMPTIONS 

Exposure Units 

Results 

(Stack) 

Results 

(Fugitive) ED 

(years) 

AT 

(years) 

BW 

(kg) 

Inh. Rate 

(m3/hr) 

Cancer 

LADDpot (mg/kg/day) 6.52E-09 1.31E-07 30.00 75.00 71.80 0.55 

LADCpot (mg/m3) 3.54E-08 7.12E-07 30.00 75.00 NA NA 

Acute 

ADRpot (mg/kg/day) N/A N/A NA 1 day 71.80 0.55 

Inhalation Comments: 
9/23/2011 Page 42 of 68 

 Stack Parameter Data Fugitive Parameter Data 

Stack Height 10.00 m Release Height: 3.00 m 

Inside Stack 

Diameter: 

0.10 m Length of Release 

Opening: 

10.00 m 

Stack Gas Exit 

Velocity: 

0.10 m/sec Width of Release 

Opening: 

10.00 m 

Stack Gas 

Temperature: 

293.00 K 

 

 Meteorological and Terrain Information: 

Surrounding Land Use: Rural 

Terrain Height: 0.00 m 

Distance to Residence of Interest: 100.00 m 

Meteorological Class: Full 

Stability Class: NA 

Wind Speed: NA 

 

 Downwash Information: 

Facility Length: NA m 

Facility Width: NA m 

Facility Height: NA m 
9/23/2011 Page 43 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:14 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: 
9/23/2011 Page 44 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 14 Number of Sites: RELEASE ACTIVITY:

Max ADR 

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 0.00 

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 13.58 38.72 63.60 75.65 

ALL 10 11.11 1.94 1.06 0.96 153.42 878.61 1608.02 1775.52 

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 

LADDpot 2.90E-07 3.28E-06 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 1.49E-05 1.68E-04 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot 3.24E-03 7.34E-02 mg/kg/day 0.00 0.00 mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 45 of 68 

INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT) 

SCENARIO #: 14 RELEASE ACTIVITY: Max ADR 

RELEASE DESCRIPTION: 

METHOD OF CALCULATION: Screen3 

EXPOSED POPULATION: Adult 

Number of Sites: 

Per Site Fugitive Release: kg/site/day 

Fugitive Release Days per Year: days 

% Removal via Fugitive Release: % 

Total Fugitive Release: kg/yr 

Max Annual Average Air Concentration 

(Fugitive): 

0.00 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive): 

0.00 μg/m3

Per Site Stack Release: kg/site/day 

Stack Release Days per Year: days 

% Removal via Stack Release: % 

Total Stack Release: kg/yr 

Max Annual Average Air Concentration (Stack): 3.17E-03 μg/m3

Max 24 Hour Average Air Concentration (Stack): 5.78 μg/m3

ASSUMPTIONS 

Exposure Units 

Results 

(Stack) 

Results 

(Fugitive) ED 

(years) 

AT 

(years) 

BW 

(kg) 

Inh. Rate 

(m3/hr) 

Cancer 

LADDpot (mg/kg/day) 2.33E-07 N/A 30.00 75.00 71.80 0.55 

LADCpot (mg/m3) 1.27E-06 N/A 30.00 75.00 NA NA 

Acute 

ADRpot (mg/kg/day) 1.06E-03 N/A NA 1 day 71.80 0.55 

Inhalation Comments: 
9/23/2011 Page 46 of 68 

 Stack Parameter Data Fugitive Parameter Data 

Stack Height 10.00 m Release Height: N/A 

Inside Stack 

Diameter: 

0.10 m Length of Release 

Opening: 

N/A 

Stack Gas Exit 

Velocity: 

0.10 m/sec Width of Release 

Opening: 

N/A 

Stack Gas 

Temperature: 

293.00 K 

 

 Meteorological and Terrain Information: 

Surrounding Land Use: Rural 

Terrain Height: 0.00 m 

Distance to Residence of Interest: 100.00 m 

Meteorological Class: Full 

Stability Class: NA 

Wind Speed: NA 

 

 Downwash Information: 

Facility Length: NA m 

Facility Width: NA m 

Facility Height: NA m 
9/23/2011 Page 47 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:15 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: 
9/23/2011 Page 48 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 15 Number of Sites: RELEASE ACTIVITY:

Max LADD 

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 0.00 

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 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 INGESTION EXPOSURE ESTIMATES 

Exposure Units 

Drinking Water Results Drinking 

Water Units Fish Ingestion Results 

Fish 

Ingestion 

Units 

50% 10% 50% 10% 

Cancer 

LADDpot 2.90E-07 3.28E-06 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 1.49E-05 1.68E-04 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot N/A N/A mg/kg/day N/A N/A mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 49 of 68 

INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES 

SCENARIO #: 15 ACTIVITY: Max LADD 

RELEASE DESCRIPTION: 

EXPOSED POPULATION: Adult 

NUMBER 

OF 

SITES 

NON-SLUDGE 

LANDFILL 

RELEASE AND 

DAYS OF 

RELEASE 

(kg/site/day)/(days) 

 LANDFILLED 

SLUDGE1 

AND DAYS OF 

RELEASE 

(kg/site/day)/(days)

MIGRATION 

DESCRIPTOR2

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 

LADDpot (mg/kg/day) 3.94E-09 30.00 75.00 71.80 1.40 

LADCpot (mg/L) 2.02E-07 30.00 75.00 NA NA 

REMARKS: 

 
9/23/2011 Page 50 of 68 

INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT) 

SCENARIO #: 15 RELEASE ACTIVITY: Max LADD 

RELEASE DESCRIPTION: 

METHOD OF CALCULATION: Screen3 

EXPOSED POPULATION: Adult 

Number of Sites: 

Per Site Fugitive Release: kg/site/day 

Fugitive Release Days per Year: days 

% Removal via Fugitive Release: % 

Total Fugitive Release: kg/yr 

Max Annual Average Air Concentration 

(Fugitive): 

0.00 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive): 

N/A μg/m3

Per Site Stack Release: kg/site/day 

Stack Release Days per Year: days 

% Removal via Stack Release: % 

Total Stack Release: kg/yr 

Max Annual Average Air Concentration (Stack): 3.17E-03 μg/m3

Max 24 Hour Average Air Concentration (Stack): N/A μg/m3

ASSUMPTIONS 

Exposure Units 

Results 

(Stack) 

Results 

(Fugitive) ED 

(years) 

AT 

(years) 

BW 

(kg) 

Inh. Rate 

(m3/hr) 

Cancer 

LADDpot (mg/kg/day) 2.33E-07 N/A 30.00 75.00 71.80 0.55 

LADCpot (mg/m3) 1.27E-06 N/A 30.00 75.00 NA NA 

Acute 

ADRpot (mg/kg/day) N/A N/A NA 1 day 71.80 0.55 

Inhalation Comments: 
9/23/2011 Page 51 of 68 

 Stack Parameter Data Fugitive Parameter Data 

Stack Height 10.00 m Release Height: N/A 

Inside Stack 

Diameter: 

0.10 m Length of Release 

Opening: 

N/A 

Stack Gas Exit 

Velocity: 

0.10 m/sec Width of Release 

Opening: 

N/A 

Stack Gas 

Temperature: 

293.00 K 

 

 Meteorological and Terrain Information: 

Surrounding Land Use: Rural 

Terrain Height: 0.00 m 

Distance to Residence of Interest: 100.00 m 

Meteorological Class: Full 

Stability Class: NA 

Wind Speed: NA 

 

 Downwash Information: 

Facility Length: NA m 

Facility Width: NA m 

Facility Height: NA m 
9/23/2011 Page 52 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:16 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: 
9/23/2011 Page 53 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 16 Number of Sites: RELEASE ACTIVITY:

Max ADR 

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 0.00 

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 1.35 3.86 6.34 7.55 

ALL 10 11.11 1.94 1.06 0.96 15.30 87.63 160.38 177.08 

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 

LADDpot 7.23E-06 8.17E-05 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 3.71E-04 4.19E-03 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot 3.23E-04 7.32E-03 mg/kg/day 0.00 0.00 mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 54 of 68 

INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT) 

SCENARIO #: 16 RELEASE ACTIVITY: Max ADR 

RELEASE DESCRIPTION: 

METHOD OF CALCULATION: Screen3 

EXPOSED POPULATION: Adult 

Number of Sites: 

Per Site Fugitive Release: kg/site/day 

Fugitive Release Days per Year: days 

% Removal via Fugitive Release: % 

Total Fugitive Release: kg/yr 

Max Annual Average Air Concentration 

(Fugitive): 

2.55 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive): 

46.50 μg/m3

Per Site Stack Release: kg/site/day 

Stack Release Days per Year: days 

% Removal via Stack Release: % 

Total Stack Release: kg/yr 

Max Annual Average Air Concentration (Stack): 0.31 μg/m3

Max 24 Hour Average Air Concentration (Stack): 2.29 μg/m3

ASSUMPTIONS 

Exposure Units 

Results 

(Stack) 

Results 

(Fugitive) ED 

(years) 

AT 

(years) 

BW 

(kg) 

Inh. Rate 

(m3/hr) 

Cancer 

LADDpot (mg/kg/day) 2.31E-05 1.88E-04 30.00 75.00 71.80 0.55 

LADCpot (mg/m3) 1.26E-04 1.02E-03 30.00 75.00 NA NA 

Acute 

ADRpot (mg/kg/day) 4.21E-04 8.55E-03 NA 1 day 71.80 0.55 

Inhalation Comments: 
9/23/2011 Page 55 of 68 

 Stack Parameter Data Fugitive Parameter Data 

Stack Height 10.00 m Release Height: 3.00 m 

Inside Stack 

Diameter: 

0.10 m Length of Release 

Opening: 

10.00 m 

Stack Gas Exit 

Velocity: 

0.10 m/sec Width of Release 

Opening: 

10.00 m 

Stack Gas 

Temperature: 

293.00 K 

 

 Meteorological and Terrain Information: 

Surrounding Land Use: Rural 

Terrain Height: 0.00 m 

Distance to Residence of Interest: 100.00 m 

Meteorological Class: Full 

Stability Class: NA 

Wind Speed: NA 

 

 Downwash Information: 

Facility Length: NA m 

Facility Width: NA m 

Facility Height: NA m 
9/23/2011 Page 56 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:17 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: 
9/23/2011 Page 57 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 17 Number of Sites: RELEASE ACTIVITY:

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 0.00 

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 1.35 3.86 6.34 7.55 

ALL 10 11.11 1.94 1.06 0.96 15.30 87.63 160.38 177.08 

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 

LADDpot 7.23E-06 8.17E-05 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 3.71E-04 4.19E-03 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot 3.23E-04 7.32E-03 mg/kg/day 0.00 0.00 mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 58 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

SIC CODE EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO #: 17 RELEASE ACTIVITY: PDM1 

SIC CODE DESCRIPTION: POTW's (All facilities) 

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 

420.00 High 
9/23/2011 Page 59 of 68 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 Assessor: Wong/BC 

ENVIRONMENTAL RELEASES 

 Scenario#:18 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: 
9/23/2011 Page 60 of 68 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-11-0526 

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

SCENARIO #: 18 Number of Sites: RELEASE ACTIVITY:

Max LADD 

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 0.00 

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 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 INGESTION EXPOSURE ESTIMATES 

Exposure Units 

Drinking Water Results Drinking 

Water Units Fish Ingestion Results 

Fish 

Ingestion 

Units 

50% 10% 50% 10% 

Cancer 

LADDpot 7.23E-06 8.17E-05 mg/kg/day 0.00 0.00 mg/kg/day 

LADCpot 3.71E-04 4.19E-03 mg/L 0.00 0.00 mg/kg 

Acute 

ADRpot N/A N/A mg/kg/day N/A N/A mg/kg/day 

SIC Code Comments: 
9/23/2011 Page 61 of 68 

INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 

DRINKING WATER EXPOSURE ESTIMATES FROM LANDFILL RELEASES 

SCENARIO #: 18 ACTIVITY: Max LADD 

RELEASE DESCRIPTION: 

EXPOSED POPULATION: Adult 

NUMBER 

OF 

SITES 

NON-SLUDGE 

LANDFILL 

RELEASE AND 

DAYS OF 

RELEASE 

(kg/site/day)/(days) 

 LANDFILLED 

SLUDGE1 

AND DAYS OF 

RELEASE 

(kg/site/day)/(days)

MIGRATION 

DESCRIPTOR2

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 

LADDpot (mg/kg/day) 3.94E-05 30.00 75.00 71.80 1.40 

LADCpot (mg/L) 2.02E-03 30.00 75.00 NA NA 

REMARKS: 

 
9/23/2011 Page 62 of 68 

INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-11-0526 

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT) 

SCENARIO #: 18 RELEASE ACTIVITY: Max LADD 

RELEASE DESCRIPTION: 

METHOD OF CALCULATION: Screen3 

EXPOSED POPULATION: Adult 

Number of Sites: 

Per Site Fugitive Release: kg/site/day 

Fugitive Release Days per Year: days 

% Removal via Fugitive Release: % 

Total Fugitive Release: kg/yr 

Max Annual Average Air Concentration 

(Fugitive): 

2.55 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive): 

N/A μg/m3

Per Site Stack Release: kg/site/day 

Stack Release Days per Year: days 

% Removal via Stack Release: % 

Total Stack Release: kg/yr 

Max Annual Average Air Concentration (Stack): 0.31 μg/m3

Max 24 Hour Average Air Concentration (Stack): N/A μg/m3

ASSUMPTIONS 

Exposure Units 

Results 

(Stack) 

Results 

(Fugitive) ED 

(years) 

AT 

(years) 

BW 

(kg) 

Inh. Rate 

(m3/hr) 

Cancer 

LADDpot (mg/kg/day) 2.31E-05 1.88E-04 30.00 75.00 71.80 0.55 

LADCpot (mg/m3) 1.26E-04 1.02E-03 30.00 75.00 NA NA 

Acute 

ADRpot (mg/kg/day) N/A N/A NA 1 day 71.80 0.55 

Inhalation Comments: 
9/23/2011 Page 63 of 68 

 Stack Parameter Data Fugitive Parameter Data 

Stack Height 10.00 m Release Height: 3.00 m 

Inside Stack 

Diameter: 

0.10 m Length of Release 

Opening: 

10.00 m 

Stack Gas Exit 

Velocity: 

0.10 m/sec Width of Release 

Opening: 

10.00 m 

Stack Gas 

Temperature: 

293.00 K 

 

 Meteorological and Terrain Information: 

Surrounding Land Use: Rural 

Terrain Height: 0.00 m 

Distance to Residence of Interest: 100.00 m 

Meteorological Class: Full 

Stability Class: NA 

Wind Speed: NA 

 

 Downwash Information: 

Facility Length: NA m 

Facility Width: NA m 

Facility Height: NA m 
9/23/2011 Page 64 of 68 
9/23/2011 Page 65 of 68 
9/23/2011 Page 66 of 68 
9/23/2011 Page 67 of 68 

INITIAL REVIEW EXPOSURE REPORT 

CHEMICAL ID: P-11-0526 
9/23/2011 Page 68 of 68