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f <br /> Thomas, Allen <br /> From: ccastron@arb.ca.gov <br /> Sent: Monday, January 21, 2008 10:46 AM <br /> To: Thomas, Allen <br /> Subject: Re: 2020 <br /> Attachments: ATT153167.htm <br /> ATT153167.htm(1 <br /> KB) <br /> What we have said during our presentations is that Phase II systems will <br /> likely be required until at least 2020. At that time (or actually probably a few years <br /> before) we will evaluate the penetration of ORVR vehicles to see if there is emission <br /> benefits in keeping Phase II requirements in CA. <br /> USEPA may allow states to remove Phase II systems earlier than 2020, but our calculations <br /> show there will still likely be 5% non-ORVR vehicles on the roads at that time. 5% may <br /> seem low, but if it is uncontrolled, that's a lot of emissions. <br /> Cindy <br /> 1 <br />