5/13/2015 Page of

INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P-15-0435 Reviewer: Wong/BC 

 

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

Exposure Scenario1 Water Landfill Stack Air Fugitive Air

Release activity(ies)2; 

exposure calculation(s)3

Drinking Water Fish Ingestion 7Q104 

CC =200

PDM 

Days 

Exceeded

LADD ADR LADD ADR LADD

ADR LADD ADR LADD

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

1.56E-02 --- --- --- 6.49E+02 --- --- --- --- --- ---

 Max LADD --- 1.65E-05 --- --- --- --- --- --- --- --- ---

 Max ADR: 

max acute eco

3.46E-02 --- --- --- 1.52E+03 --- --- --- --- --- ---

 Max 

LADD --- 4.45E-05 --- --- --- --- --- --- --- --- ---

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: 
5/13/2015 Page of

 INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-15-0435 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: 
5/13/2015 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-15-0435

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) 156.65 410.84 648.97 789.18 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 1.65E-05 mg/kg/day 0.00 mg/kg/day

LADCpot 1.27E-03 mg/L 0.00 mg/kg

Acute

ADRpot 1.56E-02 mg/kg/day 0.00 mg/kg/day

Surface Water Comments: 
5/13/2015 Page of

 INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-15-0435 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: 
5/13/2015 Page of

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-15-0435

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 1.65E-05 mg/kg/day 0.00 mg/kg/day

LADCpot 1.27E-03 mg/L 0.00 mg/kg

Acute

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

Surface Water Comments: 
5/13/2015 Page of

 INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-15-0435 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: 
5/13/2015 Page of

INITIAL REVIEW EXPOSURE REPORT

 Chemical ID: P-15-0435

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

SCENARIO #: 3 Number of Sites: 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 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 50 253.45 914.80 1522.81 1832.01

ALL 10 253.45 914.80 1522.81 1832.01

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 7.64E-06 7.64E-06 mg/kg/day 0.00 0.00 mg/kg/day

LADCpot 5.88E-04 5.88E-04 mg/L 0.00 0.00 mg/kg

Acute

ADRpot 3.46E-02 3.46E-02 mg/kg/day 0.00 0.00 mg/kg/day

SIC Code Comments: 
5/13/2015 Page of

 INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-15-0435 Assessor: Wong/BC

ENVIRONMENTAL RELEASES

Scenario#:4 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: 
5/13/2015 Page of

INITIAL REVIEW EXPOSURE REPORT

 Chemical ID: P-15-0435

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

SCENARIO #: 4 Number of Sites: 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 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 N/A N/A N/A N/A

ALL 10 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 4.45E-05 4.45E-05 mg/kg/day 0.00 0.00 mg/kg/day

LADCpot 3.42E-03 3.42E-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: