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.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. ( μ g/l)

Harmonic

Mean 30Q5 7Q10 1Q10 Harmonic Mean 30Q5 7Q10 1Q10

ALL 50

ALL 10

DRINKING WATER AND FISH IN GESTION EXPOSURE ESTIMATES

Exposure Units Drinking Water Results Drinking Water Units Fish Ingestion Results Fish Ingestion

Units 50% 10% 50% 10%

Cancer

LADD pot mg/kg/day

LADC pot mg/kg

ADR pot mg/kg/day

SIC Code Comments:STANDARD REVIEW EXPOSURE REPORT

Chemical ID: P070601

SIC CODE EXPOSURES TO SURFACE WATER RELEASES

SCENARIO #: 1 RELEASE ACTIVITY:

SIC CODE DES CRIPTION:

ASSOCIATED SIC CODES:

SIC CODE RESULTS

COC ( μ g/L) Percent of Year COC Exceeded Number of Days COC Exceeded Release days/year Loading (kg/site/day) Waste Water Treatment (%) High/Avg AnalysisSTANDARD 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/m 3

Max 24 Hour Average Air Concentration(Fugitive): 5740.00 μg/m 3

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 Con centration (Stack): 0.33 μg/m 3
Max 24 Hour Average Air Concentration (Stack): 1.82 μg/m 3

ASSUMPTIONS
Exposure Units Results (Stack) Results (Fugitive) ED (years) AT (years) BW (kg) Inh. Rate (m 3 /hr)

Cancer

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

LADC pot (mg/m 3 ) 1.32E-04 0.17 30.00 75.00 NA NA

Acute

ADR pot

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

Inhalation Comments: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 mCEM 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 (m 3 /hr): 1.1 Duration of Event – Central Tendency (hours/event): 0.5

Inhalation Rate After Use (m 3 /hr): 0.55 Duration of Event – High-End (hours/event): 0.5

Zone 1 Volume (m 3 ): 2.4 Whole House Volume (m 3 ): 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) : 1CEM 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

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

LADC pot (mg/m 3 ) 2.91e+03 2.74e+04

Acute

ADR pot

(mg/kg-day) 4.19e+05 1
Cp pot (mg/m 3 ) 2.79e+07 NA

LADD - Lifetime Average Daily Dose (mg/kg-day) LADC - Lifetime Average Daily Concentration (mg/m 3 )

ADR - Acute Dose Rate (mg/kg-day) Cp - Peak Concentration (mg/m 3 )

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

Note: The general Agency guidance for assessing short-term, infre quent 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, acu te exposures rather than as chronic exposure. (Methods for E xposure-Response Analysis for Acute Inha lation Exposure to Chemicals (External Review Draft). EPA/600/R-98/051. April 1998)