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Re: Avenal ClassIImpactAnalysis Mike McCorison to: EWalther 11/21/200704:59 PM Cc: "EricWalther", CarolBohnenkamp, federalpower, "GaryRubenstein", mmccorison, "Gilliland, Steve", "Tracey Gilliland",tprocter,John

_Bunyak, MikeMcCorison, Trent Procter,James WWhitfield, BruceEmmens, Suraj Ahuja, MartinDumpis, Dee_Morse HideDetails From: MikeMcCorison<mmccorison@fs.fed.us> SortList

... To: EWalther@sierraresearch.com Cc: "EricWalther" <EWalther@sierraresearch.com>, Carol Bohnenkamp/R9/USEPA/US@EPA, federalpower@houston.rr.com, "GaryRubenstein" <GRubenstein@sierraresearch.com>, mmccorison@fs.fed.us, "Gilliland, Steve" <steve.gilliland@synenco.com>, "Tracey Gilliland" <tegilliland@gmail.com>, tprocter@fs.fed.us, John_Bunyak@nps.gov, MikeMcCorison<mmccorison@fs.fed.us>, TrentProcter<tprocter@fs.fed.us>,JamesW Whitfield<jwhitfield@fs.fed.us>, Bruce Emmens <bemmens@fs.fed.us>, Suraj Ahuja<sahuja@fs.fed.us>, MartinDumpis <mdumpis@fs.fed.us>,Dee

_Morse@nps.gov

History: Thismessagehasbeenforwarded. The Forest Service manages several Class I areas in the areas adjacent to Pinnacles NM and Sequoia NP. We concur with Dee Morse's comments, that given the low emissions projected for this facility and the fact that these FS wilderness areas fall outside the 

### 100 km modeling radius, we also do not anticipate the emissions from the Avenal Project will significantly impact the Forest Service managed Class I 

### areas. thanks Mike Mc Corison USFS Southern California Air Resource Specialist Angeles National Forest Voice 

### 626-574-5286 Mobile 

### 626-437-0624 Fax 

### 626-574-5233**filfd/r·\nOCllment~ ~nd** **SettinQ~\chohnenk\Local SettinQ~\Temn\note~RAA** **A2'5\~wehn24___** '5f)

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-----Dee_Morse@nps.gov wrote: ----­

To: "Eric Walther" <EWalther@sierraresearch.com> From: Dee_Morse@nps.gov Date: 11/21/2007 09:38AM cc: Bohnenkamp.Carol@epamail.epa.gov, federalpower@houston.rr.com, "Gary Rubenstein" <GRubenstein@sierraresearch.com>, mmccorison@fs.fed.us, "Gilliland, Steve" <steve.gilliland@synenco.com>, "Tracey Gilliland" <tegilliland@gmail.com>, tprocter@fs.fed.us, John_Bunyak@nps.gov Subject: Re: Avenal Class I Impact Analysis Eric, We reviewed the information you provided regarding the Avenal Energy Project in Avenal, California. Given the relatively low emission increases (144 TPY of NOx, 81 TPY of PM10 and 16 TPY of SOx) and the distance to two National Park Service Class I Air Quality Areas (113 km southeast of Pinnacles NM and 113 km west of Sequoia NP), we do not anticipate the emissions from the Avenal Project will significantly impact either National Park Service Class I area. However, I do want to inform you that the statement on page 11 of the Air Dispersion Modeling and Health Risk Assessment Protocol

- Avenal Energy Project "The project is not located within 100 km of Class I areas, therefore the project although a major source will not need to evaluate impacts to visibility and other air quality related values at Class I areas." is incorrect. The Federal Land Managers of Class I areas are concerned about proposed facilities beyond 100 km if the emission increases are significantly large, and may request a full air quality analysis for these proposed facilities on a cases by case basis. Therefore, there is no automatic 100 km cutoff for Class I area impact analyses. Thanks, Dee Morse Environmental Protection Specialist Air Resources Division Natural Resource Program Center National Park Service Phone: 303 969-2817 Fax: 303 969-2822 e-mail: dee_morse@nps.gov

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### I To: <Dee_Morse@nps.gov>, <tprocter@fs.fed.us>,

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<mmccorison@fs.fed.us> 1



### I cc: "Gilliland, Steve" <steve.gilliland@synenco.com>, <federalpower@houston.rr.com>, "Tracey Gilliland" 1



### I <tegilliland@gmail.com>, "Gary Rubenstein" <GRubenstein@sierraresearch.com>, "Eric Walther"

1 <EWalther@sierraresearch.com> 

### I Subject: 

### FW: Avenal Class I Impact Analysis

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Dee, Trent and Mike: At the request of Carol Bohnenkamp, and confirmed in a call with Dee today, I am providing you the following maximum annual emissions from the proposed Avenal Energy Project, for which project Carol has already forwarded to you the Air Dispersion Modeling and Health Risk Assessment Protocol: NOx: 144.3 tpy SOx: 16.3 tpy PM10: 80.7 tpy As stated in the protocol, the closest distance from the Avenal Energy Project site to a Class I area, Pinnacles National Monument, is approximately 113 

### km. We appreciate your review of the protocol. Hopefully, your review of the emissions and distance will support our determination in the protocol that a Class I area impact analysis will not be required for this project. Eric Eric Walther Sierra Research 1801 J Street Sacramento, CA 95811-3009 916-444-6666 Main x121 916-444-8373 Fax 916-833-8774 Cell ewalther@sierraresearch.com



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