Page 1ofl17 POST FOCUS EXPOSURE REPORT 10/08/08 Chemical ID: P080464 Reviewer: Sherer/Delpire Based on revised engineering report, p080464en2, dated 10/1/08. Updated release estimates for based on new information from submitter.Page 2 of17

POST FOCUS EXPOSURE REPORT

Summary Table: Endpoints assessedPage 3 of17

POST FOCUS EXPOSURE REPORT Chemical ID: P080464 Assessor: ENVIRONMENTAL RELEASES Scenario#: 1 Number ofRelease Sites: . Release Activity: max ADR, max LADD, PDM 

### Release Dcription AE ANFLTCKFGTV TotalReleases: (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:Page 4 of 17 POST FOCUS EXPOSURE REPORT Chemical ID: P080464Page 

### 5of 17 POST FOCUS EXPOSURE REPORT Chemical ID: P080464Page 6of17 POST FOCUS EXPOSURE REPORT Chemical ID: P080464 Assessor:
Scenario#: 2 Number ofRelease Sites: Release Activity: maxADR, max LADD, PDM Release Description: 

### ~f WATER LANDFILL SAKFGTV NQo-sudge/Sludge Total Releases: (kg/yr) (kg/yr) (kg/yr) (kg/yr) Non-sludge/Sludge 

### Release Days/yr: 

# 10.0 Per Site Release:

Remarks:Page 7 of17 POST FOCUS EXPOSURE REPORT Chemical ID: P080464Page 8of17 POST FOCUS EXPOSURE REPORT Chemical ID: P080464Page 9of17 POST FOCUS EXPOSURE REPORT Chemical ID: P080464 Assessor:
Scenario#: 3 Number ofRelease Sites: Release Activity: max ADR, PDMl Release Description: WATER LANDFILL STACKC1' 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) (kg/site/day) (kg/site/day) Remarks:Page 10 of17 POST FOCUS EXPOSURE REPORT Chemical ID: P080464Page I1I of17 POST FOCUS EXPOSURE REPORT Chemical ID: P080464Page 12 of 17 POST FOCUS EXPOSURE REPORT Chemical ID: P080464 Assessor: ENIONMENTAL RELEASES Scenario#: 4 Number ofRelease Sites: Release Activity: PDM2

Release Descrption Non-sludge/Sludge

Release Days/yr: Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) Remarks:

### Page 13 of 17 POST FOCUS EXPOSURE REPORT Chemical ID: P080464Page 14 of 17 POST FOCUS EXPOSURE REPORT Chemical ID: P080464Page 15 of17 POST FOCUS EXPOSURE REPORT Chemical ID: P080464 Assessor:
Scenario#: 5 Number ofRelease Sites: Release Activity: max LADD R leaseDescription: 

### WATER LANDFIL STC UGTV Total Releases: (kg/yr) (kg/yr) (kglyr) (kg/yr) Non-sludge/Sludge Release Days/yr: Per Site Release: (kg/site/day) (kg/site/day) (kg/site/day) (kg/site/day) Remarks:Page 16 of 17 POST FOCUS EXPOSURE REPORT Chemical ID: P080464Page 17 of17 

## LEGEND FORNEW CHEMICALS EXPOSURE REPORT This new chemicals exposure report wasprepared bythe Exposure Assessment Branch (EAR) ofthe Economics, Exposure and Technology 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 ofexceedance ofthe aquatic concentration ofconcern These endpoints are identified by abbreviations on theRelease Activity line, e.g., (1) 

### max ADR, (2) 

### max LADD, (3) max PDM. Depending on therelease inputs, these endpointsmay be calculated andpresented on the same page or different pages. That is, a release activity ID ofmfg; maxADR, maxPDM,maxLADD indicates that all the exposure endpoints were calculated from common manufacturing release values; conversely, a release 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 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, 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 ? 1 00;000 kg/yrproduction volume) Criteria are exceeded under the following conditions: Presence in consumer product with likely exposure ? 3E-3 mglkg/d exposure via air, fish ingestion or drinking water ? 10,000 kg/yrrelease to environment (post-treatment)

! 1,000 kg/yrrelease to water (post-treatment) Persistent, Bioaccumulative, Toxic (PBT) chemicals ofP2B32 rating or higher and production volume 20,000 kg/yr Criteria are exceeded as for YX cases, with the following differences: > 2,000 kg/yrrelease 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.