STANDARD REVIEW EXPOSURE REPORT 

This report based on 09/20/2007 Standard Review Draft of the Engineering Report 

Chemical ID: P070601 Assessor 

ENVIRONMENTAL RELEASES 

 Scenario#:1 Number of Release Sites: 3. 

 Release Activity: MFG, max ADR, max PDM, max LADD/LADC 

 Release Description: WATER LANDFILL 

Non-sludge/Sludge 

STACK FUGITIVE 

Total Releases: N/A 

 (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: Air release is combination of 12 kg/d + 30 kg/d releases. 99.9% DRE assumed for incineration (stack) 

release; no DRE assumed for fugitive release. 

Exposure Based Criteria 

Parameter Exp Based Persistent Exceedance Value 

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

Fish Ingestion Dose (mg/kg/day) 

Inhalation Dose (mg/kg/day) 

Groundwater Dose (mg/kg/day) 

Surface Water Release After Treatment (kg/yr) 

Total Release After Treatment (kg/yr) 

Consumer exposure 

See Consumer exposure modeling at end of report.

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STANDARD REVIEW EXPOSURE REPORT 

 Chemical ID: P070601 

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

SCENARIO #: 1 Number of Sites RELEASE ACTIVITY: 

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) 

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 

ALL 10 

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 mg/kg/day 

LADCpot mg/kg 

ADRpot mg/kg/day 

SIC Code Comments: 

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STANDARD REVIEW EXPOSURE REPORT 

 Chemical ID: P070601 

SIC CODE EXPOSURES TO SURFACE WATER RELEASES 

SCENARIO #: 1 RELEASE ACTIVITY: 

SIC CODE DESCRIPTION: 

ASSOCIATED SIC CODES: 

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 

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STANDARD EXPOSURE REVIEW REPORT 

Chemical ID: P070601 

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT) 

SCENARIO #: 1 RELEASE ACTIVITY:MFG, max ADR, max PDM, max LADD/LADC

RELEASE DESCRIPTION: 

METHOD OF CALCULATION: Screen3 

EXPOSED POPULATION: Adult 

Number of Sites: 3. 

Per Site Fugitive Release: 42.00 kg/site/day 

Fugitive Release Days per Year: 330.00 days 

% Removal via Fugitive Release: 0.00 % 

Total Fugitive Release: 4.16E+04 kg/yr 

Max Annual Average Air Concentration 

(Fugitive): 

420.00 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive): 

5740.00 μg/m3

Per Site Stack Release: 270.00 kg/site/day 

Stack Release Days per Year: 330.00 days 

% Removal via Stack Release: 99.90 % 

Total Stack Release: 2.67E+05 kg/yr 

Max Annual Average Air Concentration (Stack): 0.33 μg/m3

Max 24 Hour Average Air Concentration (Stack): 1.82 μg/m3

ASSUMPTIONS 

Exposure Units 

Results 

(Stack) 

Results 

(Fugitive) ED 

(years) 

AT 

(years) 

BW 

(kg) 

Inh. Rate 

(m3/hr) 

Cancer 

LADDpot (mg/kg/day) 2.42E-05 3.09E-02 30.00 75.00 71.80 0.55 

LADCpot (mg/m3) 1.32E-04 0.17 30.00 75.00 NA NA 

Acute 

ADRpot (mg/kg/day) 3.35E-04 1.06 NA 1 day 71.80 0.55 

Inhalation Comments: 

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 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 

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CEM Inputs ID Number: P070601 

Product: auto air conditioning refrigerant Chemical Name: 

Scenario: User Defined Population: Adult 

Molecular Weight (g/mole): 114 Vapor Pressure (torr) 4550 

Consumer Product Weight Fraction – 

Central Tendency (unitless): 

1 Consumer Product Weight Fraction – HighEnd (unitless): 1 

Inhalation Inputs 

Frequency of Use (chronic) (events/yr): 1 Exposure Duration (chronic) (years): 70 

Frequency of Use (acute) (events/day): 1 Exposure Duration (acute) (days): 1 

Mass of Product Used per Event – Central 

Tendency (g): 

1.28 Mass of Product Used per Event – HighEnd (g): 1.28 

Inhalation Rate During Use (m3/hr): 1.1 Duration of Event – Central Tendency 

(hours/event): 

0.5 

Inhalation Rate After Use (m3/hr): 0.55 Duration of Event – High-End 

(hours/event): 

0.5 

Zone 1 Volume (m3): 2.4 Whole House Volume (m3): 369 

Air Exchange Rate (air exchanges/hr): 25 Body Weight (kg): 71.8 

 

Activity Patterns (Note: 1=Bedroom 2= Kitchen 3=Bathroom 4=Living Room 

 5=Utility Room 6=Car 7=Out) 

User: 4 4 4 4 4 4 4 4 4 4 4 4 6 4 4 4 4 4 4 4 4 4 4 4 

Non-User: 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 

Hour: 0 6 12 18 

Start Time: 12 Room of Use: 6. Car 

Remarks: This model run assumes catastrophic complete leakage of refrigerant into car passenger compartment 

over 30 minutes. P/chem properties and mass of product from engineering report. Weight fraction, frequency of 

Use (leak), duration of Event, and activity pattern assumed. Zone 1 (car) volume and air sxchange rate from 

Versar 1986 Standard Scenarios for Estimating Exposure to Chemical Substances During Use of Consumer 

Products. Balance of inputs are typical exposure factors for CEM default scenarios. 

Averaging Time (chronic) (days): 2.74e+04 Averaging Time (acute) (days) : 1 

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CEM Inhalation Exposure Estimates 

 ID Number: P070601 

 Scenario: User Defined Population: Adult 

 Exposure Duration (years) chronic: 70 Exposure Duration (days) acute: 1 

 

Exposure Units Result AT (days) 

 Chronic Cancer 

 LADDpot (mg/kg-day) 1.07e+03 2.74e+04 

 LADCpot (mg/m3) 2.91e+03 2.74e+04 

 Acute 

 ADRpot (mg/kg-day) 4.19e+05 1 

 Cppot (mg/m3) 2.79e+07 NA 

 LADD - Lifetime Average Daily Dose (mg/kg-day) LADC - Lifetime Average Daily Concentration (mg/m3) 

 ADR - Acute Dose Rate (mg/kg-day) Cp - Peak Concentration (mg/m3) 

 

Note: 75 years = 2.738e+04 days pot - potential dose 

Note: The general Agency guidance for assessing short-term, infrequent events (for most chemicals, an exposure of less than 24 

hours that occurs no more frequently than monthly) is to treat such events as independent, acute exposures rather than 

as chronic exposure. (Methods for Exposure-Response Analysis for Acute Inhalation Exposure to Chemicals (External 

Review Draft). EPA/600/R-98/051. April 1998)

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