9/30/2008 Page 1of 19 POSTFOCUS EXPOSURE REPORT This case revised based on revised Engineering report of4/24/2008. Chemical ID: P060450c Reviewer: Flessner Results Table: Dose, Concentration, and Days Exceeded Results Summary Scenario , 

### ~exposure Excc4

1 Exposure scenario titles consist ofrelease activity followed byexposure calculation abbreviation. 2

Rlaeactivities are from engineering report's Manufacturing (Mfg), Processing (Proc) and Userelease activity labels. Multiple release activities are combined in one exposure scenario iftheir releases occur atsame location. 3Exposure calculations are Acute Dose Rate (ADR), Lifetime Average Daily Dose (LADD), andProbabilistic Dilution Model (PDM). There may be one, two, orall three exposure calculations perexposure scenario. CC is the aquatic concentration ofconcern. Remarks:

Fate test reconmmendations?: (default isNA)9/30/2008 Page2ofl19

POSTFOCUS EXPOSURE REPORT Summary Table: Endpoints assessed Endpoints-Assessed Table

'Ashesthrehol vacles or sessping cnenpaoins a 1daye foalcuteoes aihnd th mea fodelncoss

Remarks:9/30/2008 Page 3 of19

POSTFOCUS EXPOSURE REPORT Chemical ID: P060450C Assessor: ENVIRO7NMENTAL RELEASES Scenario#: 1 Number ofRelease Sites: . Release Activity: MFG: max ADR, max LADD

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:9/30/2008 Page 4 of19 POSTFOCUS EXPOSURE REPORT9/30/2008 Page 5 of19 POSTFOCUS EXPOSURE REPORT Chemical ID: P060450C Assessor: ENVIRONMENTAL RELEASES Scenario#:2 Number ofRelease Sites: Release Activity: PROC; max ADR Release Description: WATER LANDFILL STACK FUGITIVE Non-ldeSug 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:9/30/2008 Page 6 of19 POSTFOCUS EXPOSURE REPORT Chemical ID: P060450C9/30/2008 Page7ofl19 POSTFOCUS EXPOSURE REPORT Chemical ID: P060450C Assessor: ENVIRONMENTAL RELEASES Scenario#:3 Number ofRelease Sites: Release Activity: PROC; PDM

Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr) Non-sludge/Sludge 

### Release Days/yr: 

# J
Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) Remarks:9/30/2008 Page 8of 19 POSTFOCUS EXPOSURE REPORT Chemical ID: P060450C9/30/2008 Page9ofl19 POSTFOCUS EXPOSURE REPORT Chemical ID: P060450C9/30/2008 Page 10 of 19 POSTFOCUS EXPOSURE REPORT Chemical ID: P060450C Assessor: ENVIRONMENTAL RELEASES Scenario#:4 Number ofRelease Sites: Release Activity: Release Description: WATER LANDFILL STACK FUGITIVE Non-sludge/Sludge Total Releases: (kg/yr) (kg/yr) (kg/yr) (kglyr) Non-sludge/Sludge Release Days/yr: Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) Remarks:9/30/2008 Page I11 of 19 POSTFOCUS EXPOSURE REPORT Chemical ID: P060450C9/30/2008 Page 12 ofl19 POSTFOCUS EXPOSURE REPORT Chemical ID: P060450C Assessor: ENVIRONMENTAL RELEASES Scenario#:5 Number ofRelease Sites: Release Activity: Release Description: WATER L~ANDFILL STACK FUGITIVE Nou-sludge/Sludge 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:9/30/2008 Page 13of19 POSTFOCUS EXPOSURE REPORT Chemical ID: P060450C9/302008Page 14 of 19 POSTFOCUS EXPOSURE REPORT Chemical ID: P060450C Assessor: 

## ENVIRONMENTAL~RELEASES 

# 1i 11 Scenario#:6 NumberofRelease Sites: Release Activity: USE; PDM 

### Re EeaseD Description: WTRLANDFILL STACK FUGITIVE Non-sludge/Sludge 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) Remarks:9/30/2008 Page 15 ofl19 POSTFOCUS EXPOSURE REPORT Chemical ID: P060450C9/30/2008 Page 16 of 19 POSTFOCUS EXPOSURE REPORT Chemical ID: P060450C

### 9/30/2008 Page 17 ofl19 POSTEOCUS EXPOSURE REPORT Chemical ID: P060450C Assessor: ENVIRONMENTAL RELEASES Scenario#:7 Number ofRelease Sites: . Release Activity: USE; max LADD

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:9/30/2008 Page 18 ofl19 POSTFOCUS EXPOSURE REPORT Chemical ID: P060450C9/30/2008 Page 19of19 

## LEGEND FOR NEW CHEMICALS EXPOSURE REPORT This new chemicals exposure report was prepared bythe Exposure Assessment Branch (EAB) ofthe Economics, Exposure andTechnology Division, Office ofPollution Prevention and Toxics, USEPA. The goals ofthese reports are to calculate conservative (protective) estimates ofexposure 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 ofexceedence ofthe aquatic concentration ofconcern 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 ofmfg; maxADR, maxPDM,maxL4DD indicates that all the exposure endpoints were calculated from common manufacturing release values; conversely, arelease activity ID ofmfg &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 isto theuser directly or to the general population/environment, the maximum exposure values are calculated and presented together. In addition to the exposure values above, EPApolicy directs that exposure andrelease 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/yrrelease to environment (post-treatment) > 1,000 kg/yr release to water (post-treatment) Persistent, Bioaccumulative, Toxic (PBT) chemicals ofP2B2 rating or higher and production volume 20,000 kg/yr Criteria are exceeded as for YX cases, with the following differences: 2!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.