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 

Scenario1 

Water Landfill Stack Air Fugitive Air

Drinking Water Fish Ingestion

ADR LADD ADR LADD 7Q104

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+01 --- --- --- --- ---

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 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: 
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

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

SITE-SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES

SCENARIO NUMBER:1 RELEASE ACTIVITY: MFG: 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)

 0.00 961.00

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT

FLOW (MLD)

CONCENTRATION (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

LADDpot 2.21E-07 mg/kg/day 9.11E-07 mg/kg/day

LADCpot 1.13E-05 mg/L 1.09E-02 mg/kg

Acute

ADRpot 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 

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 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 Drinking 

Water Units Fish Ingestion Results

Fish 

Ingestion 

Units

50% 10% 50% 10%

Cancer

LADDpot 4.80E-06 5.43E-05 mg/kg/day 1.98E-05 2.24E-04 mg/kg/day

LADCpot 2.46E-04 2.78E-03 mg/L 0.24 2.67 mg/kg

Acute

ADRpot 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 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 #: 3 Number of Sites: RELEASE 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 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 Drinking 

Water Units Fish Ingestion Results

Fish 

Ingestion 

Units

50% 10% 50% 10%

Cancer

LADDpot 4.80E-06 5.43E-05 mg/kg/day 1.98E-05 2.24E-04 mg/kg/day

LADCpot 2.46E-04 2.78E-03 mg/L 0.24 2.67 mg/kg

Acute

ADRpot 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

Number of 

Days COC 

Exceeded

Release 

days/year

Loading 

(kg/site/day)

Waste Water

Treatment (%)

High/Avg

Analysis

1.00 High
6/7/13 Page of

 INITIAL REVIEW EXPOSURE REPORT

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

ENVIRONMENTAL RELEASES

Scenario#: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

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 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 Results Drinking 

Water Units Fish Ingestion Results

Fish 

Ingestion 

Units

50% 10% 50% 10%

Cancer

LADDpot 2.85E-06 3.22E-05 mg/kg/day 1.17E-05 1.33E-04 mg/kg/day

LADCpot 1.46E-04 1.65E-03 mg/L 0.14 1.59 mg/kg

Acute

ADRpot 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 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

1.00 High