p110331.eng INITIAL REVIEW ENGINEERING REPORT PMN: 11-0331 Focus Ready Draft 5/19/2011 ENGINEER: Avcin \ JD \ EV PV (kg/yr):

SUBMITTER: KiOR, Inc. USE: Hydrotreated lignocellulosic distillate used as a blendstock for conventional fossil fuels. P2REC: CRSS: Forward. P2 Claim: The PMN material is a renewable crude oil substitute created from from surplus biomass feedstock. This substitute can be refined and then blended into a variety of transportation fuels. It is compatible with and can be "dropped-in" to our country's existing fuel production and distribution infrastructure and used in vehicles on the road today. The PMN material delivers over 80% reduction in greenhouse gas emissions relative to current gasoline and diesel fuels.

MSDS: Yes Label: No Gen Eqpt: Eye Protection: For general work, use a minimum of safety glasses with side shields. Where a spray, mist or heavy vapor may exist, use chemical safety goggles or a full-face respirator. Although face shields can be used to supplement the level of protection, they should never be used instead of primary eye protection.| Skin Protection: Wear impervious protective clothing, including boots, gloves apron or coveralls, as appropriate, to prevent skin contact. Respirator: Where vapors are present and engineering controls have been unsuccessful or not available, use NIOSH approved respiratory protection to mitigate potential respiratory exposures. In situations where the levels of the airborne contamination are unknown, use a supplied air respirator or a self-contained breathing apparatus (SCBA). Respirators should be used in accordance with OSHA requirements (29 CFR 1910.134). Health Effects: High vapor concentrations are irritating to the eyes and respiratory tract and may be a central nervous system (CNS) depressant (headaches, dizziness and anesthetic effects). In addition, brief contact with liquid may result in a minor irritation. This material Page 1p110331.eng may also cause irritation of the eyes upon contact with the liquid. TLV/PEL: none established

Consumer Use: No SAT (concerns) (04/26/2011): Related Cases and Related Cases and Misc SAT Info:
Migration to groundwater: Moderate PBT rating: P1B1T1 . Health: 1-2 Dermal, Drinking Water, Inhalation Eco: 2 Water (All releases to water with a CC = 82 ppb)
OCCUPATIONAL EXPOSURE RATING: 2-3C
NOTES & KEY ASSUMPTIONS: Generated by the 06/07/2005 version of ChemSTEER.

Page 2p110331.eng

Page 3p110331.eng

Page 4p110331.eng

INITIAL REVIEW ENGINEERING REPORT PMN: 11-0331 Manufacturing: Number of Sites/ Location:

ENVIRONMENTAL RELEASES ESTIMATE SUMMARY IRER Note: The daily releases listed for any source below may coincide with daily releases from the other sources to the same medium.

Page 5p110331.eng

Page 6p110331.eng

OCCUPATIONAL EXPOSURES ESTIMATE SUMMARY Tot. # of workers exposed via assessed routes: 6

Inhalation: Exposure to Vapor (Class II) Typical: 4.9E-3 mg/day over 365 days/yr Worst Case: 6.1E-1 mg/day over 365 days/yr Number of workers (all sites) with inhalation exposure: 6

INHALATION MONITORING DATA REVIEW 1) Uncertainty (estimate based on model, regulatory limit or data not specific to industry): Yes 2)a) Exposure level > 1 mg/day? No OR b) Hazard Rating for health of 2 or greater? 1-2 No Inhalation Monitoring Data Desired? No Exposure to Vapor (Class II) Typical: 1.2E+3 mg/day over 365 days/yr Worst Case: 3.5E+4 mg/day over 365 days/yr Number of workers (all sites) with inhalation exposure: 6

INHALATION MONITORING DATA REVIEW Page 7p110331.eng 1) Uncertainty (estimate based on model, regulatory limit or data not specific to industry): Yes 2)a) Exposure level > 1 mg/day? Yes OR b) Hazard Rating for health of 2 or greater? 1-2 No Inhalation Monitoring Data Desired? Yes (both criteria met) Dermal: Exposure to Liquid at 100.00% concentration High End: 1.8E+3 mg/day over 365 days/yr Number of workers (all sites) with dermal exposure: 6

INITIAL REVIEW ENGINEERING REPORT PMN: 11-0331 Manufacturing: Number of Sites/ Location:

ENVIRONMENTAL RELEASES ESTIMATE SUMMARY IRER Note: The daily releases listed for any source below may coincide with daily releases from the other sources to the same medium.

OCCUPATIONAL EXPOSURES ESTIMATE SUMMARY Tot. # of workers exposed via assessed routes: 3 Page 8p110331.eng

Inhalation: Exposure to Vapor (Class II) Typical: 2.5E+1 mg/day over 365 days/yr Worst Case: 7.5E+2 mg/day over 365 days/yr Number of workers (all sites) with inhalation exposure: 3

INHALATION MONITORING DATA REVIEW 1) Uncertainty (estimate based on model, regulatory limit or data not specific to industry): Yes 2)a) Exposure level > 1 mg/day? Yes OR b) Hazard Rating for health of 2 or greater? 1-2 No Inhalation Monitoring Data Desired? Yes (both criteria met) Dermal: Exposure to Liquid at 100.00% concentration High End: 1.8E+3 mg/day over 365 days/yr Number of workers (all sites) with dermal exposure: 3

INITIAL REVIEW ENGINEERING REPORT PMN: 11-0331 Processing: Number of Sites/ Location:

Process Description:

ENVIRONMENTAL RELEASES ESTIMATE SUMMARY IRER Note: The daily releases listed for any source below may coincide with daily releases from the other sources to the same medium.

Page 9p110331.eng

OCCUPATIONAL EXPOSURES ESTIMATE SUMMARY Tot. # of workers exposed via assessed routes: 45

Inhalation: Exposure to Vapor (Class II) Typical: 1.5E+2 mg/day over 365 days/yr Worst Case: 4.6E+3 mg/day over 365 days/yr Number of workers (all sites) with inhalation exposure: 45

INHALATION MONITORING DATA REVIEW 1) Uncertainty (estimate based on model, regulatory limit or data not specific to industry): Yes 2)a) Exposure level > 1 mg/day? Yes OR b) Hazard Rating for health of 2 or greater? 1-2 No Inhalation Monitoring Data Desired? Yes (both criteria met) Exposure to Vapor (Class II) Typical: 1.5E+3 mg/day over 365 days/yr Worst Case: 4.6E+4 mg/day over 365 days/yr Page 10p110331.eng Number of workers (all sites) with inhalation exposure: 45

INHALATION MONITORING DATA REVIEW 1) Uncertainty (estimate based on model, regulatory limit or data not specific to industry): Yes 2)a) Exposure level > 1 mg/day? Yes OR b) Hazard Rating for health of 2 or greater? 1-2 No Inhalation Monitoring Data Desired? Yes (both criteria met) Dermal: Exposure to Liquid at 100.00% concentration High End: 1.8E+3 mg/day over 365 days/yr Number of workers (all sites) with dermal exposure: 45

INITIAL REVIEW ENGINEERING REPORT PMN: 11-0331

Use: Number of Sites/ Location:

Process Description:

ENVIRONMENTAL RELEASES ESTIMATE SUMMARY IRER Note: The daily releases listed for any source below may coincide with daily releases from the other sources to the same medium.

Page 11p110331.eng

OCCUPATIONAL EXPOSURES ESTIMATE SUMMARY Tot. # of workers exposed via assessed routes: 555

Inhalation: Exposure to Vapor (Class II) Typical: 1.2E+2 mg/day over 365 days/yr Worst Case: 3.7E+3 mg/day over 365 days/yr Number of workers (all sites) with inhalation exposure:

INHALATION MONITORING DATA REVIEW 1) Uncertainty (estimate based on model, regulatory limit or data not specific to industry): Yes 2)a) Exposure level > 1 mg/day? Yes OR b) Hazard Rating for health of 2 or greater? 1-2 No Inhalation Monitoring Data Desired? Yes (both criteria met) Dermal: Exposure to Liquid at 10.00% concentration High End: 1.8E+2 mg/day over 365 days/yr Number of workers (all sites) with dermal exposure: 555

Page 12