INITIAL REVIEW EXPOSURE REPORT (IRExR)

Summary Page: Endpoints assessed, criteria exceeded, fate tests

Chemical ID: S080006 Reviewer: Delpire

Endpoints-Assessed Table

Endpoints/Assessment 

Cycles1

Releases 

Assessed 

in 

NCEM2?

Reasons for not assessing releases

No XB 

Testing 

Required

No 

Hazard 

Concern

No 

Releases 

Release 

Below 

Acute 

Threshold5

Release 

Below 

Chronic 

Threshold5

Other

Ingestion

Surface water N NA X X NA NA

Ground water (landfill) N NA X X NA

Consumer Use: DtD2 N NA X NA NA NA No consumer use

Inhalation

Air: incineration (stack) Y NA X

Air: fugitive N NA X X

Consumer Use: CEM3 N NA NA NA NA No consumer use

Dermal

Consumer Use: CEM N NA NA NA NA No consumer use

Eco

Surface water: ADR 

conc and/or PDM4

N NA X X NA NA

Consumer Use: DtD N NA NA NA NA No consumer use 1

Assessment cycles are endpoint concentrations and dose calculations within the NCEM2 model.

2

Down-the-Drain 3

Consumer Exposure Model

4

Probabilistic Dilution Model

5

The threshold values for assessing endpoints are 1 mg/day for acute doses and 1 mg/year for chronic doses.

Fate test recommendations?: (default is NA)

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 INITIAL REVIEW EXPOSURE REPORT

Chemical ID: S080006 Assessor: Delpire

ENVIRONMENTAL RELEASES

Scenario#:1 Number of Release Sites: 2. 

Release Activity: USE: max LADD

Release Description: WATER LANDFILL

Non-sludge/Sludge 

STACK FUGITIVE

Total Releases: N/A N/A 2240.00 0.00

(kg/yr) (kg/yr) (kg/yr) (kg/yr)

Non-sludge/Sludge

Release Days/yr: N/A 0.00/0.00 1.00 0.00

Per Site Release: N/A N/A/0.00 1120.00 0.00

(kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day)

Remarks: 

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INITIAL EXPOSURE REVIEW REPORT

Chemical ID: S080006

INHALATION EXPOSURE ESTIMATES (POST-TREATMENT)

SCENARIO #: 1 RELEASE ACTIVITY:USE: max LADD

RELEASE DESCRIPTION: 

METHOD OF CALCULATION: Screen3

EXPOSED POPULATION: Adult

Number of Sites: 2. 

Per Site Fugitive Release: NA kg/site/day

Fugitive Release Days per Year: NA days

% Removal via Fugitive Release: 0.00 % 

Total Fugitive Release: NA kg/yr

Max Annual Average Air Concentration 

(Fugitive):

0.00 μg/m3

Max 24 Hour Average Air 

Concentration(Fugitive):

0.00 μg/m3

Per Site Stack Release: 1120.00 kg/site/day

Stack Release Days per Year: 1.00 days

% Removal via Stack Release: 0.00 % 

Total Stack Release: 2240.00 kg/yr

Max Annual Average Air Concentration (Stack): 4.13 μg/m3

Max 24 Hour Average Air Concentration (Stack): 7540.00 μg/m3

Exposure Units

Results

(Stack)

Results

(Fugitive)

ASSUMPTIONS

ED

(years)

AT

(years)

BW

(kg)

Inh. Rate 

(m3/hr)

Cancer

LADDpot (mg/kg/day) 3.04E-04 N/A 30.00 75.00 71.80 0.55

LADCpot (mg/m3) 1.65E-03 N/A 30.00 75.00 NA NA

Acute

ADRpot (mg/kg/day) 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: N/A

Inside Stack 

Diameter:

0.10 m Length of Release 

Opening:

N/A

Stack Gas Exit 

Velocity:

0.10 m/sec Width of Release 

Opening:

N/A

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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LEGEND FOR NEW CHEMICALS EXPOSURE REPORT

This new chemicals exposure report was prepared by the Exposure Assessment Branch (EAB) of the Economics, 

Exposure and Technology Division, Office of Pollution Prevention and Toxics, USEPA.

The goals of these reports are to calculate conservative (protective) estimates of exposure endpoints for consumers, 

the general population, and the environment. 

For each exposure scenario to industrial releases, the following three endpoints are calculated: 

(1) maximum possible acute concentrations and doses 

(2) maximum possible chronic concentrations and doses

(3) for water releases ≥ 20 days, the probability of exceedence of the aquatic concentration of concern

These endpoints are identified by abbreviations on the Release Activity line, e.g., (1) max ADR, (2) max 

LADD, (3) max PDM. Depending on the release inputs, these endpoints may be calculated and presented on 

the same page or different pages. That is, a release activity ID of mfg; max ADR, max PDM, max LADD

indicates that all the exposure endpoints were calculated from common manufacturing release values; 

conversely, a release activity ID of mfg &proc; max ADR indicates that only the maximum acute exposure 

values were calculated for manufacturing and processing releases that occurred at the same site. 

For each consumer product use exposure scenario, whether exposure is to the user directly or to the general 

population/environment, the maximum exposure values are calculated and presented together.

In addition to the exposure values above, EPA policy directs that exposure and release values be compared to 

criteria threshold values for Exposure-based and PBT Exposure-based cases.

Exposure-based (YX) cases (those with ≥ 100,000 kg/yr production volume)

Criteria are exceeded under the following conditions:

Presence in consumer product with likely exposure

≥ 3E-3 mg/kg/d exposure via air, fish ingestion or drinking water

≥ 10,000 kg/yr release to environment (post-treatment)

≥ 1,000 kg/yr release to water (post-treatment)

Persistent, Bioaccumulative, Toxic (PBT) chemicals of P2B2 rating or higher and production volume ≥ 20,000 kg/yr

Criteria are exceeded as for YX cases, with the following differences:

≥ 2,000 kg/yr release to environment (post-treatment)

≥ 200 kg/yr release to water (post-treatment)

Bolding rules in the Report: Values for endpoints above that are also health or eco concerns are bolded.

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