7/3/2013 Page 1 of 14

 

INITIAL REVIEW EXPOSURE REPORT (IRExR)

Chemical ID: P-13-0568 R eviewer: Flessner/SD 

 

 

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 = 4

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

max 

acute eco

1.29E-03 --- 1.06E-03 --- 2.18E+01 --- --- --- --- --- ---

Max 

LADD

--- 1.78E-07 --- 5.39E-08 --- --- --- --- --- --- ---

max 

acute eco

3.90E-03 --- 1.99E-03 --- 7.99E+01 --- --- --- --- --- ---

PDM1

--- --- --- --- 7.99E+01 --- --- --- --- ---

Max LADD

--- 1.84E-05 --- 5.58E-06 --- --- 7.10E-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.
7/3/2013 Page 2 of 14

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

Parameter Exp Based Persistent Exceedance Value

Drinking (Surface) Water 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) NA

Total Release After Treatment (kg/yr) NA

Consumer Use? No

Fate test recommendations?: (default is NA)
7/3/2013 Page 3 of 14

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0568 Assessor: Flessner/SD

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: 
7/3/2013 Page 4 of 14

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0568

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 70.80

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT

FLOW (MLD)

CONCENTRATION (μg/L) 8.32 15.45 21.78 27.12 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 1.78E-07 mg/kg/day 5.39E-08 mg/kg/day

LADCpot 9.12E-06 mg/L 6.46E-04 mg/kg

Acute

ADRpot 1.29E-03 mg/kg/day 1.06E-03 mg/kg/day

Surface Water Comments: 
7/3/2013 Page 5 of 14

 INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0568 Assessor: Flessner/SD

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: 
7/3/2013 Page 6 of 14

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0568

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 70.80

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 1.78E-07 mg/kg/day 5.39E-08 mg/kg/day

LADCpot 9.12E-06 mg/L 6.46E-04 mg/kg

Acute

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

Surface Water Comments: 
7/3/2013 Page 7 of 14

 INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0568 Assessor: Flessner/SD

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: 
7/3/2013 Page 8 of 14

INITIAL REVIEW EXPOSURE REPORT

 Chemical ID: P-13-0568

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

SCENARIO #: 3 Number of Sites: RELEASE ACTIVITY:

Max ADR

SIC-CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disch.)

SIC-CODE (S): Subset of 4952 EXPOSED POPULATION: Adult

WWT 

REMOVAL

(%)

RELEASE

DAYS

PRETREATMENT 

RELEASE 

(kg/site/day)

POSTTREATMENT 

RELEASE 

(kg/site/day)

DWT

(%) BCF

(L/kg) 

 0.00 70.80

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 50 288.00 123.84 78.18 66.05 2.15 5.01 7.93 9.39

ALL 10 39.60 13.29 7.76 7.57 15.66 46.65 79.90 81.90

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 2.53E-06 1.84E-05 mg/kg/day 7.68E-07 5.58E-06 mg/kg/day

LADCpot 1.30E-04 9.44E-04 mg/L 9.19E-03 6.68E-02 mg/kg

Acute

ADRpot 4.18E-04 3.90E-03 mg/kg/day 2.74E-04 1.99E-03 mg/kg/day

SIC Code Comments: 
7/3/2013 Page 9 of 14

 INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0568 Assessor: Flessner/SD

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: 
7/3/2013 Page 10 of 14

INITIAL REVIEW EXPOSURE REPORT

 Chemical ID: P-13-0568

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

SCENARIO #: 4 Number of Sites: RELEASE ACTIVITY:

PDM1

SIC-CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disch.)

SIC-CODE (S): Subset of 4952 EXPOSED POPULATION: Adult

WWT 

REMOVAL

(%)

RELEASE

DAYS

PRETREATMENT 

RELEASE 

(kg/site/day)

POSTTREATMENT 

RELEASE 

(kg/site/day)

DWT

(%) BCF

(L/kg) 

 0.00 70.80

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 50 288.00 123.84 78.18 66.05 2.15 5.01 7.93 9.39

ALL 10 39.60 13.29 7.76 7.57 15.66 46.65 79.90 81.90

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 2.53E-06 1.84E-05 mg/kg/day 7.68E-07 5.58E-06 mg/kg/day

LADCpot 1.30E-04 9.44E-04 mg/L 9.19E-03 6.68E-02 mg/kg

Acute

ADRpot 4.18E-04 3.90E-03 mg/kg/day 2.74E-04 1.99E-03 mg/kg/day

SIC Code Comments: 
7/3/2013 Page 11 of 14

INITIAL REVIEW EXPOSURE REPORT

 Chemical ID: P-13-0568

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 4 RELEASE ACTIVITY: PDM1 

SIC CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disch.)

ASSOCIATED SIC CODES: Subset of 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

High
7/3/2013 Page 12 of 14

 INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0568 Assessor: Flessner/SD

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: 
7/3/2013 Page 13 of 14

INITIAL REVIEW EXPOSURE REPORT

 Chemical ID: P-13-0568

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

SCENARIO #: 5 Number of Sites: RELEASE ACTIVITY:

Max LADD

SIC-CODE DESCRIPTION: POTW (Indust., includes POTWs which receive ind. disch.)

SIC-CODE (S): Subset of 4952 EXPOSED POPULATION: Adult

WWT 

REMOVAL

(%)

RELEASE

DAYS

PRETREATMENT 

RELEASE 

(kg/site/day)

POSTTREATMENT 

RELEASE 

(kg/site/day)

DWT

(%) BCF

(L/kg) 

 0.00 70.80

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 50 288.00 123.84 78.18 66.05 N/A N/A N/A N/A

ALL 10 39.60 13.29 7.76 7.57 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 2.53E-06 1.84E-05 mg/kg/day 7.68E-07 5.58E-06 mg/kg/day

LADCpot 1.30E-04 9.44E-04 mg/L 9.19E-03 6.68E-02 mg/kg

Acute

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

SIC Code Comments: 
7/3/2013 Page 14 of 14

INITIAL REVIEW EXPOSURE REPORT

Chemical ID: P-13-0568

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 

 

 Exposure Units Results

ASSUMPTIONS

ED

(years)

AT

(years)

BW

(kg)

IR

(L/day)

Cancer

LADDpot (mg/kg/day) 7.10E-05 30.00 75.00 71.80 1.40

LADCpot (mg/L) 3.64E-03 30.00 75.00 NA NA

REMARKS: