12/27/2013 Page 1 of 8 

INITIAL REVIEW EXPOSURE REPORT (IRExR) 

 Chemical ID: P-14-0143 Reviewer: 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 = 1 

PDM 

Days 

Exceed

ed 

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 

USE: Max 

ADR: max 

acute eco 

1.81E-06 --- 2 .95E-08 --- 2.84E-02 --- --- --- --- --- --- 

USE: PDM1 --- --- --- --- 1.63E-03 --- --- --- --- --- 

USE: Max 

LADD 

--- 2 .02E-09 --- 2.73E-11 --- --- --- --- --- --- --- 

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: 

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) No NA 

Total Release After Treatment (kg/yr) No NA 

Consumer Use? No 

Fate test recommendations?: (default is NA) 
12/27/2013 Page 2 of 8 

INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-14-0143 Assessor: Flessner/SD 

ENVIRONMENTAL RELEASES 

 Scenario#:1 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: 
12/27/2013 Page 3 of 8 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-14-0143 

SITE-SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO NUMBER:1 RELEASE ACTIVITY: USE: Max ADR 

FACILITY NAME: 

FACILITY LOCATION: 

RECEIVING WATER 

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 3.16 

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER 

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT 

FLOW (MLD) 

CONCENTRATION (μg/L) 5.19E-03 2.16E-02 2.84E-02 3.59E-02 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 1.11E-10 mg/kg/day 1.50E-12 mg/kg/day 

LADCpot 5.68E-09 mg/L 1.80E-08 mg/kg 

Acute 

ADRpot 1.81E-06 mg/kg/day 2.95E-08 mg/kg/day 

Surface Water Comments: 
12/27/2013 Page 4 of 8 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-14-0143 Assessor: Flessner/SD 

ENVIRONMENTAL RELEASES 

 Scenario#:2 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: 
12/27/2013 Page 5 of 8 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-14-0143 

SITE-SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO NUMBER:2 RELEASE ACTIVITY: USE: PDM1 

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 3.16 

AQUATIC EXPOSURE ESTIMATES - SURFACE WATER 

FLOW DESCRIPTOR Harmonic Mean 30Q5 7Q10 1Q10 PLANT 

FLOW (MLD) 

CONCENTRATION (μg/L) 2.98E-04 1.24E-03 1.63E-03 2.06E-03 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 1.91E-09 mg/kg/day 2.59E-11 mg/kg/day 

LADCpot 9.80E-08 mg/L 3.10E-07 mg/kg 

Acute 

ADRpot 1.04E-07 mg/kg/day 1.69E-09 mg/kg/day 

Surface Water Comments: 
12/27/2013 Page 6 of 8 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-14-0143 

SITE-SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO NUMBER: 2 RELEASE ACTIVITY: USE: PDM1 

FACILITY NAME: 

FACILITY LOCATION: 

RECEIVING STREAM NAME: 

REACH NUMBER: FACILITY ON REACH: DISCHARGE TYPE: 

NPDES PERMIT NUMBER: GAGING STATION ID: 

GAGING STATION 

PERIOD OF RECORD: 

GAGING STATION 

NUMBER OF 

OBSERVATIONS: 

NUMBER OF STATIONS ON 

REACH: 

50 %ile FLOW (MLD): 10 %ile FLOW (MLD): EFFLUENT FLOW (MLD)

 

RESULTS 

COC (μg/L) 

Percent of Year 

COC Exceeded 

Number of Days 

COC Exceeded 

Release 

days/year 

Pre-treatment 

Loading 

(kg/site/day) 

Waste Water 

Treatment (%) 

1.00 
12/27/2013 Page 7 of 8 

 INITIAL REVIEW EXPOSURE REPORT 

Chemical ID: P-14-0143 Assessor: Flessner/SD 

ENVIRONMENTAL RELEASES 

 Scenario#:3 Number of Release Sites: 

 Release Activity: USE: 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: 
12/27/2013 Page 8 of 8 

INITIAL REVIEW EXPOSURE REPORT 

 Chemical ID: P-14-0143 

SITE-SPECIFIC HUMAN AND AQUATIC EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO NUMBER:3 RELEASE ACTIVITY: USE: 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 3.16 

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 2.02E-09 mg/kg/day 2.73E-11 mg/kg/day 

LADCpot 1.03E-07 mg/L 3.27E-07 mg/kg 

Acute 

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

Surface Water Comments: