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	<title>hmmh blog</title>
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	<link>http://www.hmmh.com/blog</link>
	<description>Noise and Vibration Control, Airport and Airspace Planning, Environmental Consulting, Air Quality</description>
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		<title>HMMH Starts Work on Energy Siting Guidebook for the Aviation Industry</title>
		<link>http://www.hmmh.com/blog/?p=1058</link>
		<comments>http://www.hmmh.com/blog/?p=1058#comments</comments>
		<pubDate>Wed, 09 May 2012 21:38:38 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Steve's State]]></category>
		<category><![CDATA[ACRP]]></category>
		<category><![CDATA[energy]]></category>
		<category><![CDATA[energy at airports]]></category>
		<category><![CDATA[energy guidebook]]></category>
		<category><![CDATA[faa solar guide]]></category>
		<category><![CDATA[green technology]]></category>
		<category><![CDATA[nas]]></category>
		<category><![CDATA[TRB]]></category>

		<guid isPermaLink="false">http://www.hmmh.com/blog/?p=1058</guid>
		<description><![CDATA[by Steve Barrett The National Academy of Sciences (NAS) has officially announced the selection of the HMMH Team to prepare “Guidebook for Energy Projects Compatibility with Airports and Airspace.”   The objective of this research is to produce a guidebook supported by empirical evidence that provides best practices for aviation safety associated with planning, developing and [...]]]></description>
			<content:encoded><![CDATA[<p>by Steve Barrett</p>
<p><a title="nas" href="http://www.nationalacademies.org/" target="_blank">The National Academy of Sciences (NAS)</a> has officially announced the selection of the HMMH Team to prepare “Guidebook for Energy Projects Compatibility with Airports and Airspace.”   The objective of this research is to produce a guidebook supported by empirical evidence that provides best practices for aviation safety associated with planning, developing and constructing energy production and transmission technologies at and around airports.</p>
<p>The project is funded under the NAS Transportation Research Board’s <a title="acrp" href="http://www.trb.org/ACRP/ACRP.aspx" target="_blank">Airport Cooperative Research Program (ACRP)</a> and sponsored by the Federal Aviation Administration.  The ACRP is an industry-driven, applied research program that develops near-term, practical solutions to problems faced by airport operators.  HMMH has undertaken several other ACRP research projects associated with aviation noise issues.</p>
<p>The Guidebook will review information on energy and airports including issues associated with solar photovoltaic (PV) and concentrating solar power, wind energy, power plant stacks and cooling towers, electric transmission lines, and oil and gas drilling.  Potential impacts include physical obstruction, glint and glare, radar interference, and thermal plumes.  The Guidebook will rely on existing experience like solar PV projects at Manchester, Indianapolis, and Fresno, and oil/gas drilling operations at Elmira-Corning, Dallas-Fort Worth, and Denver.</p>
<p>HMMH will be working with experts in the energy field.  The Department of Energy’s <a title="sandia" href="http://www.sandia.gov/" target="_blank">Sandia National Laboratories</a> will evaluate solar glint and glare.  Bryan Miller, former Department of Defense Liaison to the White House, will review wind energy and radar issues.  Professor Yu Zhang from the <a title="usf" href="http://www.usf.edu/" target="_blank">University of South Florida</a> will contribute knowledge about existing and future air traffic operations.  And Mary Vigilante of <a title="synergy" href="http://www.synergyenv.com/" target="_blank">Synergy</a> will provide oversight on airport operational issues.  The Guidebook will be delivered to the ACRP in the fall of 2013.  I look forward to managing this project and advancing the state of practice for enhanced energy project siting.</p>
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		<title>The Cocktail Party Effect</title>
		<link>http://www.hmmh.com/blog/?p=1053</link>
		<comments>http://www.hmmh.com/blog/?p=1053#comments</comments>
		<pubDate>Wed, 25 Apr 2012 21:48:01 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Mary Ellen's Meanderings]]></category>
		<category><![CDATA[background noise]]></category>
		<category><![CDATA[noise]]></category>

		<guid isPermaLink="false">http://www.hmmh.com/blog/?p=1053</guid>
		<description><![CDATA[by Mary Ellen Eagan First, I must admit that it was the photo that caught my eye – we don’t have cable at home, and it’s killing me that I’m missing Mad Men Season 5. Today’s Wall Street Journal has an article on “the cocktail party effect” which talks about the role of background noise [...]]]></description>
			<content:encoded><![CDATA[<p>by Mary Ellen Eagan</p>
<p>First, I must admit that it was the photo that caught my eye – we don’t have cable at home, and it’s killing me that I’m missing <a title="amctc website" href="http://www.amctv.com/shows/mad-men" target="_blank">Mad Men Season 5</a>.</p>
<div id="attachment_1054" class="wp-caption aligncenter" style="width: 310px"><a href="http://www.hmmh.com/blog/wp-content/uploads/2012/04/PJ-BG717_HEALTH_G_20120423192801.jpg"><img class="size-medium wp-image-1054" title="PJ-BG717_HEALTH_G_20120423192801" src="http://www.hmmh.com/blog/wp-content/uploads/2012/04/PJ-BG717_HEALTH_G_20120423192801-300x272.jpg" alt="" width="300" height="272" /></a><p class="wp-caption-text">What cocktail parties teach us</p></div>
<p>Today’s <a title="wsj website" href="http://online.wsj.com/home-page" target="_blank"><em>Wall Street Journal</em></a> has an <a title="wsj article" href="http://online.wsj.com/article/SB10001424052702303459004577361850069498164.html?mod=ITP_personaljournal_0" target="_blank">article</a> on “the cocktail party effect” which talks about the role of background noise on our ability to focus, especially in settings such as cocktail parties.  Apparently when we focus on a single conversation, our auditory cortex boosts the signal of that conversation to prioritize what’s most important.  Pretty cool.</p>
<p>The focus of the article really, though, is about attention, and how the findings of the cocktail study demonstrate why people aren&#8217;t very good at multitasking:  namely, our brains are wired for &#8220;selective attention&#8221; and can focus on only one thing at a time.   This has important implications for distracted driving, walking, and other forms of multitasking.   And yet, <a title="psychology today website" href="http://www.psychologytoday.com/blog/smart-parenting-smarter-kids/201107/can-kids-multitask" target="_blank">our kids seem to be pretty good at it</a>.</p>
<p>BTW, a related condition is “selective hearing” – that’s when you ask your mate to take out the trash (or any other “yes, dear” chore) and it doesn’t happen.  Hint:  ask for a “<a title="answers.com website" href="http://www.answers.com/topic/read-back" target="_blank">read-back</a>” (works especially well with pilots).</p>
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		<title>Sustainable Opulence</title>
		<link>http://www.hmmh.com/blog/?p=1048</link>
		<comments>http://www.hmmh.com/blog/?p=1048#comments</comments>
		<pubDate>Mon, 23 Apr 2012 19:09:30 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Mary Ellen's Meanderings]]></category>
		<category><![CDATA[ACI]]></category>
		<category><![CDATA[aviation]]></category>
		<category><![CDATA[environmental affairs]]></category>
		<category><![CDATA[faa]]></category>
		<category><![CDATA[las vegas]]></category>
		<category><![CDATA[NextGen]]></category>
		<category><![CDATA[PBN]]></category>
		<category><![CDATA[RNAV]]></category>
		<category><![CDATA[rnp]]></category>
		<category><![CDATA[TRB]]></category>

		<guid isPermaLink="false">http://www.hmmh.com/blog/?p=1048</guid>
		<description><![CDATA[by Mary Ellen Eagan Vegas, Baby.  Just returned from four days in Vegas, attending the ACI-NA Environmental Affairs Conference and the TRB Environmental Impacts of Aviation (AV030) Mid-year meeting.  This year the Environmental Affairs Conference teamed with the Operations and Technical Affairs Conference.  There were several joint sessions, most notably on Integrating RNAV/RNP into the [...]]]></description>
			<content:encoded><![CDATA[<p>by Mary Ellen Eagan</p>
<p>Vegas, Baby.  Just returned from four days in Vegas, attending the <a title="ACI events" href="http://www.aci-na.org/event/545" target="_blank">ACI-NA Environmental Affairs Conference</a> and the <a title="TRB commitee website" href="http://www.trbav030.org/" target="_blank">TRB Environmental Impacts of Aviation (AV030)</a> Mid-year meeting. </p>
<p>This year the Environmental Affairs Conference teamed with the Operations and Technical Affairs Conference.  There were several joint sessions, most notably on Integrating RNAV/RNP into the airport setting.  Other hot topics included:</p>
<ul>
<li>Further discussion of FAA’s impending Program Guidance Letter on Residential Sound Insulation.  Latest word is that ACI-NA and other industry groups will have an opportunity to review the draft shortly.  Stand by.</li>
<li>Air toxics and other ongoing air quality studies in the Los Angeles area.</li>
<li>Strategies for noise stringency at upcoming CAEP meeting.</li>
<li><a title="hmmh website" href="http://www.hmmh.com/blog/?p=1040" target="_blank">PBN</a> implementation and integration with airports:  “<a title="ACI resources" href="http://www.aci-na.org/opstechnextgenresources" target="_blank">NextGen begins and ends at airports</a>”.</li>
</ul>
<p>Our TRB meeting covered a lot of ground in a few hours, including:</p>
<ul>
<li>Introduction of new subcommittee chairs:  <a title="concordia faculty website" href="http://gpe.concordia.ca/faculty-and-staff/jpatterson/" target="_blank">Judith Patterson of Concordia University</a> is the new Climate Subcommittee Chair, and <a title="CDM Smith website" href="http://cdmsmith.com/en-US/Insights/people-progress-magazine/September-2011/Driving-Down-Emissions.aspx" target="_blank">Kristin Lemaster of CDM Smith</a> is the new Sustainability Subcommittee Chair.  Many thanks to <a title="KKR website" href="http://www.kaplankirsch.com/john_e_putnam.php" target="_blank">John Putnam of Kaplan Kirsch &amp; Rockwell</a> and <a title="twitter profile burrst" href="https://twitter.com/#!/burrst" target="_blank">Burr Stewart of Burrst</a>, the outgoing chairs of those committees, respectively.</li>
<li>Discussion of possible session topics for the 2013 TRB Annual Meeting, including:  new standards for CO2 measurements (ICAO);         NextGen Environmental Impacts: operational perspective ; Alternative Fuels Update; <a title="faa website" href="http://www.faa.gov/news/fact_sheets/news_story.cfm?newsId=11538" target="_blank">FAA CLEEN Program</a> update;  Implications of <a title="faa website" href="http://www.faa.gov/news/fact_sheets/news_story.cfm?newsId=6287" target="_blank">Unmanned Aerial Vehicles (UAV’s)</a> on environment/planning;  Equity and Access to commercial travel; and <a title="hawaii news website" href="http://www.hawaiinewsnow.com/story/16933879/hawaiian-air-earns-aviation-based-carbon-credits" target="_blank">Aviation Carbon Credits</a>.  Stay tuned for the actual agenda!</li>
<li>Presentations by Doug Bennett of the <a title="SNWA website" href="http://www.snwa.com/consv/conservation.html" target="_blank">Southern Nevada Water Authority</a> Chris Magee of the <a title="SNWA website" href="http://www.snwa.com/consv/conservation.html" target="_blank">MGM Resorts International</a> about efforts in Las Vegas to conserve water and be generally more sustainable.</li>
</ul>
<p>I had been dreading holding two environmental meetings in Las Vegas, which I have long considered one of the <a title="fast company blog" href="http://blog.fastcompany.com/post/20116962140/watch-this-time-lapsed-video-of-one-of-the" target="_blank">least sustainable places on earth</a>.  However, after listening to these two guys talk about water conservation initiatives in Las Vegas – not just including the Strip, but <em>especially</em> the Strip – I was quite impressed.  Following the meeting, several of us had dinner in the <a title="Aria hotel website" href="http://www.arialasvegas.com/" target="_blank">Aria Hotel</a>, which has achieved <a title="USGBC website" href="http://www.usgbc.org/DisplayPage.aspx?CMSPageID=220" target="_blank">USGBC LEED Gold Certification</a>.   More on the City Center’s Environmental Commitment – including an on-site cogeneration plant, specially designed low flow shower heads, and CNG limos <a title="city center website" href="http://www2.citycenter.com/environment/" target="_blank">here</a>.  My only wish is that it would be more visible to the tourist with an environmental conscience.  This is one of those cases where what happens in Vegas shouldn’t stay in Vegas.</p>
<div id="attachment_1049" class="wp-caption aligncenter" style="width: 310px"><a href="http://www.hmmh.com/blog/wp-content/uploads/2012/04/New-Image.jpg"><img class="size-medium wp-image-1049" title="New Image" src="http://www.hmmh.com/blog/wp-content/uploads/2012/04/New-Image-300x225.jpg" alt="" width="300" height="225" /></a><p class="wp-caption-text">Keeping with its commitment to sustainability, CityCenter has commissioned the first stretch-limo fleet powered by compressed natural gas (CNG).</p></div>
<p>&nbsp;</p>
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		<title>Got PBN?</title>
		<link>http://www.hmmh.com/blog/?p=1040</link>
		<comments>http://www.hmmh.com/blog/?p=1040#comments</comments>
		<pubDate>Wed, 28 Mar 2012 19:33:16 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Mary Ellen's Meanderings]]></category>
		<category><![CDATA[air quality]]></category>
		<category><![CDATA[faa]]></category>
		<category><![CDATA[NextGen]]></category>
		<category><![CDATA[noise]]></category>
		<category><![CDATA[PBN]]></category>
		<category><![CDATA[RNAV]]></category>
		<category><![CDATA[rnp]]></category>
		<category><![CDATA[ucd]]></category>

		<guid isPermaLink="false">http://www.hmmh.com/blog/?p=1040</guid>
		<description><![CDATA[by Mary Ellen Eagan Apologies for the somewhat belated post, but here&#8217;s a quick recap of the recent UC Davis Noise and Air Quality Symposium: Navigating NextGen, held March 4-6 in Palm Springs, CA. The focus of much of the discussion at this year’s symposium was implementation of the FAA&#8217;s NextGen Program, the early phases [...]]]></description>
			<content:encoded><![CDATA[<p>by Mary Ellen Eagan</p>
<p>Apologies for the somewhat belated post, but here&#8217;s a quick recap of the recent <a title="Aviation Enviro Symposium website" href="https://sites.google.com/site/aviationenvirosymposium/home" target="_blank">UC Davis Noise and Air Quality Symposium: Navigating NextGen</a>, held March 4-6 in Palm Springs, CA.</p>
<p>The focus of much of the discussion at this year’s symposium was implementation of <a title="FAA website" href="http://www.faa.gov/nextgen/" target="_blank">the FAA&#8217;s NextGen Program</a>, the early phases of which are now being rolled out across the country.  This blog has discussed NextGen issues before, but I think this was the first conference I&#8217;ve attended that attendees were uniformly focused on finding ways to make implementation a success.</p>
<p>The symposium keynote was delivered by Dennis Roberts of the FAA&#8217;s ATO. Dennis is responsible for managing FAA&#8217;s <a title="FAA website" href="http://www.faa.gov/nextgen/today/metroplex/" target="_blank">Optimization of Airspace and Procedures in the Metroplex</a> (OAPM) “metroplex” projects, a systematic, integrated, and accelerated program to implement satellite based navigation in the aviation system.   HMMH is involved in several of the metroplex projects, including the Houston Metroplex, which is on the President’s <a title="federal infrastructure website" href="http://permits.performance.gov/projects/nextgen-infrastructure-initiative-houston-metroplex-oapm" target="_blank">Federal Infrastructure Dashboard</a>, which was initiated to monitor the pace of DOT efforts to accelerate major infrastructure projects by improving permitting and environmental review processes, and to improve the accountability, transparency, and efficiency of Federal actions. </p>
<p>Other sessions focused on providing an overview of NextGen technologies and Performance Based Navigation (PBN) terminology, as well as airport experiences implementing and collaborating with FAA on the implementation of procedures at their airports.  The takeaway message from the entire symposium is that there is an urgent need for airports to get involved with NextGen airspace planning – airports understand local issues and provide a critical link between communities and the FAA.  Many airports have also spent years developing noise abatement programs and must be at the table to ensure that airspace planners understand both the spirit and substance of noise abatement.  As active participants in several of these projects, we at HMMH believe that this collaborative approach will be critical to early success of NextGen.</p>
<p>Presentations for the symposium can be found <a title="Aviation Enviro Symposium website" href="https://sites.google.com/site/aviationenvirosymposium/project-definition" target="_blank">here</a> (click on the presenter’s name).  Next year’s symposium will be held in Orange County, CA.  Please let me know if you have suggestions for topics for discussion.</p>
<p><a href="http://www.hmmh.com/blog/wp-content/uploads/2012/03/UCD12-PBN-button.jpg"><img class="aligncenter size-medium wp-image-1042" title="UCD12-PBN-button" src="http://www.hmmh.com/blog/wp-content/uploads/2012/03/UCD12-PBN-button-286x300.jpg" alt="" width="286" height="300" /></a></p>
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		<title>AAAE Energy Forum Recap</title>
		<link>http://www.hmmh.com/blog/?p=1031</link>
		<comments>http://www.hmmh.com/blog/?p=1031#comments</comments>
		<pubDate>Wed, 22 Feb 2012 18:34:18 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Steve's State]]></category>
		<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[AAAE]]></category>
		<category><![CDATA[aip]]></category>
		<category><![CDATA[airport sustainability]]></category>
		<category><![CDATA[energy forum]]></category>
		<category><![CDATA[solar guide]]></category>
		<category><![CDATA[sustainability]]></category>
		<category><![CDATA[vale]]></category>
		<category><![CDATA[wind energy]]></category>

		<guid isPermaLink="false">http://www.hmmh.com/blog/?p=1031</guid>
		<description><![CDATA[by Steve Barrett The AAAE Energy Forum convened last week in sunny West Palm Beach, Florida.  The Forum was last held in Seattle in February of 2010 and several of the participants from that event, including me, worked on the organizing committee for this year’s forum.  The group expects the program to become an annual [...]]]></description>
			<content:encoded><![CDATA[<p>by Steve Barrett</p>
<p>The <a title="AAAE Energy and Efficiency Forum" href="http://events.aaae.org/sites/120102/index.cfm" target="_blank">AAAE Energy Forum</a> convened last week in sunny West Palm Beach, Florida.  The Forum was last held in Seattle in February of 2010 and several of the participants from that event, including me, worked on the organizing committee for this year’s forum.  The group expects the program to become an annual event with February in Florida acting as a great draw.</p>
<div id="attachment_1032" class="wp-caption aligncenter" style="width: 310px"><a href="http://www.hmmh.com/blog/wp-content/uploads/2012/02/11EnergyEfficencyPostcard_1.jpg"><img class="size-medium wp-image-1032" title="11EnergyEfficencyPostcard_1" src="http://www.hmmh.com/blog/wp-content/uploads/2012/02/11EnergyEfficencyPostcard_1-300x200.jpg" alt="" width="300" height="200" /></a><p class="wp-caption-text">Energy Efficiency Forum Postcard</p></div>
<p>Besides the inviting weather, energy is a topic of great interest in the aviation community given escalating costs and innovative solutions.  The conference attracted 80 professionals with diverse expertise including airport staff, solar energy developers, energy and environmental consultants, airport planners, architects, engineers, utilities, and financial institutions.  Airports represented included Palm Beach, Orlando, Lee County, Metro Washington Airport Authority (MWAA), Minneapolis-St. Paul, Los Angeles World Airports (LAWA), Dallas-Fort Worth, Jackson Hole, Toronto, and Cold Lake Alberta.</p>
<p>I moderated the first two panels covering renewable energy topics.  I also made two separate presentations: <a title="solar guide download pdf" href="http://www.faa.gov/airports/environmental/policy_guidance/media/airport_solar_guide_print.pdf" target="_blank">“Technical Guidance for Evaluating Selected Solar Technologies at Airport </a>[aka The Solar Guide]” and “Can Wind Energy and Aviation Be Compatible?”  Other renewable energy topics covered in presentations included solar development by airports and private lease holders, geothermal, and fuel cells.  There was a significant amount of programming on energy efficiency measures including the diversity of equipment replacement actions that can be taken, from light bulbs to heating and cooling systems, and quick payback periods.  An FAA representative summarized funding possibilities under the Volu<a title="VALE Program websit" href="http://www.faa.gov/airports/environmental/vale/" target="_blank">ntary Airport Low Emissions (VALE) Program</a> and action by Congress just two weeks ago under the <a title="faa reauthorization information" href="http://www.faa.gov/regulations_policies/reauthorization/" target="_blank">FAA Reauthorization</a> allowing <a title="FAA AIP information" href="http://www.faa.gov/airports/aip/" target="_blank">Airport Improvement Program</a> (AIP) funds to be used for energy efficiency-related upgrades.  The second day’s lunch speaker from “Space Florida” spoke about NASA’s plans for supporting a growing commercial spaceflight business including issuing contracts to private companies to ferry payload and passengers to the In<a title="nasa's international space station information" href="http://www.nasa.gov/mission_pages/station/main/index.html" target="_blank">ternational Space Station</a> over the next few years.</p>
<p>As energy issues continue to impact all aspects of commerce and quality of life, the AAAE Energy Forum is expected to become the aviation industry’s prime conference for discussing energy challenges and opportunities.  The committee has already started planning for next year’s event.</p>
<p>Presentations are posted on <a title="presentation and publications" href="http://www.hmmh.com/presentations-papers.html" target="_blank">HMMH&#8217;s website</a>.</p>
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		<title>TRB Highlights &#8211; Aviation</title>
		<link>http://www.hmmh.com/blog/?p=1022</link>
		<comments>http://www.hmmh.com/blog/?p=1022#comments</comments>
		<pubDate>Mon, 30 Jan 2012 17:46:31 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Phil's Files]]></category>
		<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[AV030]]></category>
		<category><![CDATA[climate and energy]]></category>
		<category><![CDATA[climate change]]></category>
		<category><![CDATA[solar guidance]]></category>
		<category><![CDATA[TRB]]></category>

		<guid isPermaLink="false">http://www.hmmh.com/blog/?p=1022</guid>
		<description><![CDATA[by Phil DeVita One of the highlights of the TRB Annual Meeting that I look forward to each year is the AV030 sessions on aviation and environmental impacts.  HMMH’s president, Mary Ellen Eagan, does a great job in pulling these sessions together to allow the subcommittees to present an update on progress and highlight emerging &#8220;hot [...]]]></description>
			<content:encoded><![CDATA[<p>by Phil DeVita</p>
<p>One of the highlights of the <a title="TRB Annual Meeting website" href="http://www.trb.org/AnnualMeeting2012/AnnualMeeting2012.aspx" target="_blank">TRB Annual Meeting</a> that I look forward to each year is the <a title="AV030 website" href="http://www.trbav030.org/" target="_blank">AV030</a> sessions on aviation and environmental impacts.  HMMH’s president, Mary Ellen Eagan, does a great job in pulling these <a title="AV030 program" href="http://www.trbav030.org/pdf2012/2012_Annual_Meeting_AV030Program.pdf" target="_blank">sessions </a>together to allow the subcommittees to present an update on progress and highlight emerging &#8220;hot button&#8221; issues.   This year sessions did not disappoint with a very interesting student presentation on “Bird Aircraft Strike Risk Assessment at Commercial Airports: Sub-Model Development Accounting for Strike Occurrence and Severity at Seattle Tacoma International Airport”. </p>
<p>The climate change subcommittee provided an update on climate change issues affecting aviation, including an update from the summer Woods Hole Conference which focused on climate change adaptation and planning.  With the changing climate, airports are starting to focus on the potential impacts of climate change and incorporating these impacts into the master planning.  Some of the issues included in the planning include rising sea water, stormwater and severe weather. There was also an entertaining discussion with attendees on other topics of concern such as reducing greenhouse gas emissions, renewable energy, energy efficiency and the role of alternate fuels.  The climate change discussion supports the activities of HMMH’s Climate and Energy Group with the release of the “<a title="solar guidance pdf" href="http://www.faa.gov/airports/environmental/policy_guidance/media/airport_solar_guide.pdf" target="_blank">Technical Guidance for Evaluating Selected Solar Technologies on Airports</a>” and the ACRP Synthesis, “<a title="TRB Synthesis website" href="http://www.trb.org/Main/Blurbs/166099.aspx" target="_blank">Investigating Safety Impacts of Energy Technologies on Airports and Aviation</a>”.  With renewable energy becoming a viable alternative to mitigate greenhouse gas emissions, the impact on aviation is becoming a growing concern and HMMH’s experience in this area is helping the aviation industry address these concerns.</p>
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		<title>TRB Highlights &#8211; Rail</title>
		<link>http://www.hmmh.com/blog/?p=1014</link>
		<comments>http://www.hmmh.com/blog/?p=1014#comments</comments>
		<pubDate>Mon, 30 Jan 2012 15:26:25 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[dart]]></category>
		<category><![CDATA[desert xpress]]></category>
		<category><![CDATA[high speed rail]]></category>
		<category><![CDATA[HSR]]></category>
		<category><![CDATA[NEPA]]></category>
		<category><![CDATA[noise and vibration]]></category>
		<category><![CDATA[rail noise]]></category>
		<category><![CDATA[transit noise]]></category>
		<category><![CDATA[TRB]]></category>

		<guid isPermaLink="false">http://www.hmmh.com/blog/?p=1014</guid>
		<description><![CDATA[by Jason Ross One of the best highlights from the 91st Transportation Research Board Annual Meeting in Washington D.C. was the “Riding the NEPA Railroad Workshop” on Sunday.  I usually find the workshops interesting and engaging and this year was no different.  Leading NEPA experts from FRA, FTA and FHWA compared the NEPA processes across [...]]]></description>
			<content:encoded><![CDATA[<p>by Jason Ross</p>
<p>One of the best highlights from the 91<sup>st</sup> <a title="trb website" href="http://www.trb.org/AnnualMeeting2012/AnnualMeeting2012.aspx" target="_blank">Transportation Research Board Annual Meeting</a> in Washington D.C. was the “Riding the NEPA Railroad Workshop” on Sunday.  I usually find the workshops interesting and engaging and this year was no different.  Leading <a title="epa website" href="http://www.epa.gov/compliance/nepa/" target="_blank">NEPA</a> experts from FRA, FTA and FHWA compared the NEPA processes across all three agencies – something HMMH has experienced firsthand.  HMMH is leading the noise and vibration studies for two of the three highlighted projects including the <a title="desert xpress website" href="http://www.desertxpress.com/" target="_blank">Desert Xpress</a> high-speed rail line proposed from Victorville, CA to Las Vegas, NV and the <a title="california high speed rail website" href="http://www.cahighspeedrail.ca.gov/lib_Merced_Fresno.aspx" target="_blank">California High-Speed Rail Project</a> between Fresno to Merced.</p>
<p>NEPA experts helped to again fill the house for Session 737 on “Expediting Environmental Review: Underlying Causes for Runaway Process”.  This session focused on the growing need to streamline the NEPA process.  Did you know the average time to complete an EIS has been 67 months?!  One project for which HMMH is proud to have conducted the noise and vibration analysis is the <a title="dallas area rapid transit webiste" href="http://www.dart.org/" target="_blank">Dallas</a> Streetcar EA.  This project resulted in a 14-page EA that was completed in 14 months.  Horst Greczmiel, from the Council on Environmental Quality, presented on recent NEPA trends including the availability of a tool to streamline the public comment and response process.  More information can be found on these recent trends and CEQ recommendations <a title="whitehouse website" href="http://www.whitehouse.gov/administration/eop/ceq/initatives/nepa" target="_blank">here</a>.</p>
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		<title>INM Version 7.0c and Floatplanes in Alaska</title>
		<link>http://www.hmmh.com/blog/?p=991</link>
		<comments>http://www.hmmh.com/blog/?p=991#comments</comments>
		<pubDate>Thu, 05 Jan 2012 23:00:00 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[7.0c]]></category>
		<category><![CDATA[faa]]></category>
		<category><![CDATA[float planes]]></category>
		<category><![CDATA[Havilland DCH-2 Beaver]]></category>
		<category><![CDATA[hmmh]]></category>
		<category><![CDATA[inm]]></category>
		<category><![CDATA[new version]]></category>
		<category><![CDATA[plane noise]]></category>
		<category><![CDATA[Volpe]]></category>
		<category><![CDATA[wasilla]]></category>
		<category><![CDATA[willow lake]]></category>

		<guid isPermaLink="false">http://www.hmmh.com/blog/?p=991</guid>
		<description><![CDATA[by Brad Nicholas If you have not heard, the Federal Aviation Administration (FAA) just released Version 7.0c of its Integrated Noise Model (INM).  This update is almost entirely about database changes, and a lot of them, including: Updated noise information for nineteen aircraft Nine Airbus jets Six props Four helicopters Sixty-eight changes to aircraft substitutions [...]]]></description>
			<content:encoded><![CDATA[<p>by Brad Nicholas</p>
<p>If you have not heard, the Federal Aviation Administration (FAA) just released Version 7.0c of its <a title="faa website" href="http://www.faa.gov/about/office_org/headquarters_offices/apl/research/models/inm_model/" target="_blank">Integrated Noise Model (INM).  </a>This update is almost entirely about database changes, and a lot of them, including:</p>
<ul>
<li>Updated noise information for nineteen aircraft
<ul>
<li>Nine Airbus jets</li>
<li>Six props</li>
<li>Four helicopters</li>
</ul>
</li>
<li>Sixty-eight changes to aircraft substitutions
<ul>
<li>Twenty-two new</li>
<li>Thirty-eight modified</li>
<li>Eight deleted</li>
</ul>
</li>
<li>Eleven new aircraft
<ul>
<li>Five Cessna jets</li>
<li>Four Bell helicopters</li>
<li>Two single-engine floatplanes</li>
</ul>
</li>
<li>Modified arrival profiles for twenty-one aircraft</li>
<ul>
<li>Sixteen Airbus and Boeing jets (updated reverse thrust segment)</li>
<li>Five props (added final landing segment)</li>
</ul>
</ul>
<p>There are a few other changes, but you can find those in the <a title="faa website" href="http://www.faa.gov/about/office_org/headquarters_offices/apl/research/models/inm_model/inm7_0c/media/INM70c_releasenotes.pdf" target="_blank">release notes</a>.  I’m an instructor for HMMH’s <a title="hmmh website" href="http://www.hmmh.com/integrated-noise-model.html" target="_blank">INM Training Course</a> so I take an interest in any new releases, but there was something special about this one.  In the list above, I’m fairly confident that the thing that jumps out at everyone is the floatplanes.  Or maybe that’s just me.  Let’s do a little backstory here.</p>
<p>In June of 2007 I was at Willow Lake, Alaska doing noise measurements for a study of floatplane noise.  Willow Lake is just up the road from the now (in)famous city of Wasilla.  Each year, the frozen lake is used as the restart point for the <a title="iditarod website" href="http://www.iditarod.com/checkpoints/large_map.html" target="_blank">Iditarod</a> dog sled race.  It’s a scenic little lake, surrounded by forest with houses, cabins, and a community center along the shore.  It is also used by floatplanes.</p>
<div id="attachment_995" class="wp-caption aligncenter" style="width: 392px"><a href="http://www.hmmh.com/blog/wp-content/uploads/2012/01/P60600171.jpg"><img class=" wp-image-995      " title="P6060017" src="http://www.hmmh.com/blog/wp-content/uploads/2012/01/P60600171-1024x768.jpg" alt="" width="382" height="286" /></a><p class="wp-caption-text">Floatplane Departure, Willow Lake, AK</p></div>
<p> The weather for the measurement program was great and the residents around the lake were friendly and helpful.  Folks in Alaska love their airplanes.  It is by far the most aviation-literate population that I have ever met.  Everyone seemed to be a pilot, have been a pilot, or at the bare minimum, have a pilot in the family.  Given the love of airplanes and the low operations levels (approximately twenty operations per day in-season), why was the study necessary?</p>
<p>In short, the floatplanes, particularly the de Havilland DCH-2, are loud and due to the size of the lake and proximity of the houses to the shore, the planes are quite close to residential locations when they are applying full thrust to get off the water.  Here’s a picture of a Beaver taking off from the deck of residence along the shore.</p>
<div id="attachment_1001" class="wp-caption aligncenter" style="width: 310px"><a href="http://www.hmmh.com/blog/wp-content/uploads/2012/01/P6060006.jpg"><img class="size-medium wp-image-1001" title="OLYMPUS DIGITAL CAMERA" src="http://www.hmmh.com/blog/wp-content/uploads/2012/01/P6060006-300x225.jpg" alt="" width="300" height="225" /></a><p class="wp-caption-text">De Havilland DHC-2 Beaver Take-off, Willow Lake, AK</p></div>
<div class="mceTemp"> </div>
<div class="mceTemp"> At full throttle, that radial piston engine and whirling propeller produced maximum levels averaging 112 dBA at this location for northbound departures.  A single northbound DHC-2 departure per day would give a Day Night Average Sound Level (DNL) of 70 dB.  Actual average levels were quite a bit lower due to a much higher percentage of southbound departures and the fact that the lake is frozen most of the year.  Still, after experiencing this firsthand, I was impressed by the tolerance of the locals.</div>
<div class="mceTemp"> </div>
<div class="mceTemp">After the measurement program, it was time to model the average annual conditions for our report.  At that time INM 7.0 was the most current version and the DHC-2 was modeled using the GASEPV, a generic single engine piston aircraft with a variable-pitch propeller.  Unfortunately, that aircraft produced levels that were nine to twenty-three decibels too low compared to the measurements, depending on the location along the flight path.  To put twenty-three decibels in perspective, using that aircraft would be the same as using an accurate aircraft, but modeling one two-hundredths of the correct number of operations.</div>
<div class="mceTemp"> </div>
<div class="mceTemp"> After no small amount of work and worry, I ended up creating a user-defined aircraft by modifying the GASEPV to have a much longer take-off distance and increased source noise levels.  This produced a reasonable representation of the Beavers operating on the Lake.</div>
<div class="mceTemp"> </div>
<div class="mceTemp">Let’s jump back to 2012 and the release of INM 7.0c.  It has a new aircraft, a DHC-2 floatplane.  Let’s see how it compares on the most common departure path at Willow Lake.  The table below includes measured values and the INM 7.0c computed Sound Exposure Level (SEL) and take-off roll distances for the GASEPV (INM 7.0 representation of the DHC-2), my user-defined aircraft, and the new DHC-2FLT.</div>
<div class="mceTemp"> </div>
<div class="mceTemp">
<table border="1" cellspacing="0" cellpadding="0">
<tbody>
<tr>
<td valign="top"><strong>Item</strong></td>
<td valign="top"><strong>Description</strong></td>
<td valign="top"><strong>Measured</strong></td>
<td valign="top"><strong>GASEPV</strong></td>
<td valign="top"><strong>User-Defined</strong></td>
<td valign="top"><strong>DHC-2FLT</strong></td>
</tr>
<tr>
<td valign="top">Site 1 SEL (dBA)</td>
<td valign="top">near start of takeoff</td>
<td>
<p align="center">99</p>
</td>
<td>
<p align="center">94</p>
</td>
<td>
<p align="center">103</p>
</td>
<td>
<p align="center">93</p>
</td>
</tr>
<tr>
<td valign="top">Site 2 SEL (dBA)</td>
<td valign="top">take-off “roll”</td>
<td>
<p align="center">109</p>
</td>
<td>
<p align="center">93</p>
</td>
<td>
<p align="center">103</p>
</td>
<td>
<p align="center">91</p>
</td>
</tr>
<tr>
<td valign="top">Site 3 SEL (dBA)</td>
<td valign="top">just after take-off</td>
<td>
<p align="center">103</p>
</td>
<td>
<p align="center">93</p>
</td>
<td>
<p align="center">105</p>
</td>
<td>
<p align="center">105</p>
</td>
</tr>
<tr>
<td valign="top">Site 4 SEL (dBA)</td>
<td valign="top">after take-off</td>
<td>
<p align="center">103</p>
</td>
<td>
<p align="center">94</p>
</td>
<td>
<p align="center">102</p>
</td>
<td>
<p align="center">101</p>
</td>
</tr>
<tr>
<td valign="top">Take-off Roll (ft)</td>
<td valign="top"> </td>
<td>
<p align="center">1,340</p>
</td>
<td>
<p align="center">630</p>
</td>
<td>
<p align="center">1,340</p>
</td>
<td>
<p align="center">1,594</p>
</td>
</tr>
</tbody>
</table>
</div>
<div class="mceTemp"> </div>
<div class="mceTemp">Well, nothing hits the measurements exactly at all points, but the user-defined aircraft and the new DHC-2FLT are clearly better than the old substitution.  Of course the user-defined aircraft was developed from precisely this particular set of measurement data so the agreement is not surprising.  The agreement with the new standard INM data is nice to see though.  The development of this data for the new DHC-2FLT will be detailed in a US DOT Volpe National Transportation Systems Center report which is pending publication (see the INM 7.0c release notes).</div>
<div class="mceTemp"> </div>
<div class="mceTemp">The discrepancies for the take-off roll portion are not entirely unexpected.  First, the measurements may slightly overstate the SEL by including some taxi noise.  Second, water is a hard reflective surface and the INM will underestimate the levels when the primary reflected path is off the water due to the inclusion of a soft-ground effect.  You can remove this effect for props in the INM, but it would do that at all sites which would throw off the results at Sites 3 and 4 where the soft-ground assumption is more appropriate.  Third, the measurements were of a limited number of aircraft which performed the majority of the operations on this particular lake.  The general fleet may be slightly different.</div>
<div class="mceTemp"> </div>
<div class="mceTemp">So there you have it, INM 7.0c is out and it has two new floatplanes.  This may not matter to most folks, but I can remember a few months back 2007 when this would have made my life a lot easier.</div>
<div class="mceTemp"> </div>
<div class="mceTemp"> </div>
<div class="mceTemp"> </div>
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		<title>The Deeper Meaning of Rudolph</title>
		<link>http://www.hmmh.com/blog/?p=975</link>
		<comments>http://www.hmmh.com/blog/?p=975#comments</comments>
		<pubDate>Thu, 22 Dec 2011 16:32:21 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Mary Ellen's Meanderings]]></category>
		<category><![CDATA[christmas movies]]></category>
		<category><![CDATA[hmmh]]></category>
		<category><![CDATA[Rudolph]]></category>

		<guid isPermaLink="false">http://www.hmmh.com/blog/?p=975</guid>
		<description><![CDATA[&#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; I have reached the age where I’m trying to be more reflective and purposeful (aka, midlife crisis).  Or perhaps it’s just that my husband’s deep thinker tendencies are rubbing off on me.  Here’s what he has to say about Rudolph: So.  The family was all [...]]]></description>
			<content:encoded><![CDATA[<div id="attachment_978" class="wp-caption alignleft" style="width: 212px"><a href="http://www.hmmh.com/blog/wp-content/uploads/2011/12/rudolph_video.jpg"><img class="size-medium wp-image-978 " title="rudolph_video" src="http://www.hmmh.com/blog/wp-content/uploads/2011/12/rudolph_video-202x300.jpg" alt="" width="202" height="300" /></a><p class="wp-caption-text">Rudolph the Red-Nosed Reindeer</p></div>
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<p>I have reached the age where I’m trying to be more reflective and purposeful (aka, midlife crisis).  Or perhaps it’s just that my husband’s deep thinker tendencies are rubbing off on me.  Here’s what he has to say about Rudolph:</p>
<ul>
<li>So.  The family was all together watching <a title="Rudolph the Red-Nosed Reindeer" href="http://www.imdb.com/title/tt0058536/" target="_blank"><em>Rudolph the Red-Nosed Reindeer</em></a> last night (Mama in her &#8216;kerchief and I in my cap).  Our youngest daughter, the seven year old, asked if any of the reindeer were girls.  If you&#8217;ve seen the show recently, you might recall that the reindeer pulling Santa’s sleigh all are clearly males: the bucks all have antlers and the does don&#8217;t.  However, a quick <a title="Snopes website - reindeer" href="http://www.snopes.com/holidays/christmas/santa/reindeer.asp" target="_blank">Google search</a> suggests that that this is actually backwards:  male reindeer typically lose their antlers before December, while the females, which <em>do</em> have antlers, retain theirs. But while the show does get a couple of mere prosaic facts wrong, it&#8217;s the mythic aspects of Rudolph I find interesting.</li>
</ul>
<p>BTW, as further proof, David also pointed out that many of the reindeer names in Clement Moore’s original poem (<a title="Wikipedia" href="http://en.wikipedia.org/wiki/A_Visit_from_St._Nicholas" target="_blank">A Visit from St. Nicholas</a>) while conceivably gender neutral in 2011, were probably quite feminine in mid-nineteenth century America (just think about Dancer, Prancer, Vixen, and Cupid for a start).  This launched a long discussion of whether this 1960s portrayal of Rudolph is actually an anti-feminist screed – don’t forget that Coach Comet shoos Clarice and Mrs. Donner (she’s never named) back to the cave because searching for Rudolph is “men’s work”.  But I digress.  There’s more:</p>
<ul>
<li>Mythic, you ask? Rudolph the Red-Nosed Reindeer?  Well, Rudolph himself is pretty much your basic Joseph Campbell “hero-with-a-thousand-faces”. You&#8217;ve seen him before; he&#8217;s <a title="Wikipedia" href="http://en.wikipedia.org/wiki/Luke_Skywalker" target="_blank">Luke Skywalker</a>, <a title="Wikipedia" href="http://en.wikipedia.org/wiki/Harry_Potter_%28character%29" target="_blank">Harry Potter</a>, all those guys.  However, the other characters are bit more nuanced. Consider <a title="Wikia christmas specials" href="http://christmas-specials.wikia.com/wiki/King_Moonracer" target="_blank">King Moonracer</a>.   Who is he and why is he even in RTRNR?  If you don&#8217;t recall, King Moonracer is the sovereign of the Island of Misfit Toys.  The misfit toys are in hell and Moonracer is the Lord of the Underworld &#8211; he&#8217;s the god Hades.  He&#8217;s not the Christian devil; he&#8217;s not evil.  He presides over those who are unloved and no longer alive.  He also represents the Anti-Santa.  Santa rules Christmastown with mercy and compassion; if you’re good, you get toys (and I&#8217;ve noticed, at least in our house, that Santa brings the naughty kids plenty of toys, too).  Hades rules with old-fashioned Old Testament judgment: when Rudolph, <a title="msmindy rudolph fan site" href="http://msmindy.com/rudolph/char_hermey.shtml" target="_blank">Hermey</a>, and <a title="msmindy rudolph fan site" href="http://msmindy.com/rudolph/char_yukon.shtml" target="_blank">Yukon Cornelius</a> ask to stay, Moonracer rejects their request and only allows them to spend a single night on the Island &#8211; just enough so they know the taste of being truly forgotten and unloved.</li>
</ul>
<p>&nbsp;</p>
<div id="attachment_981" class="wp-caption alignleft" style="width: 310px"><a href="http://www.hmmh.com/blog/wp-content/uploads/2011/12/KingMisfit.jpg"><img class="size-full wp-image-981" title="KingMisfit" src="http://www.hmmh.com/blog/wp-content/uploads/2011/12/KingMisfit.jpg" alt="" width="300" height="230" /></a><p class="wp-caption-text">King Moonracer</p></div>
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<div id="attachment_982" class="wp-caption alignleft" style="width: 140px"><a href="http://www.hmmh.com/blog/wp-content/uploads/2011/12/hermey_tn.jpg"><img class="size-full wp-image-982" title="hermey_tn" src="http://www.hmmh.com/blog/wp-content/uploads/2011/12/hermey_tn.jpg" alt="" width="130" height="100" /></a><p class="wp-caption-text">Hermey</p></div>
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<div id="attachment_983" class="wp-caption alignleft" style="width: 154px"><a href="http://www.hmmh.com/blog/wp-content/uploads/2011/12/yukon_tn.jpg"><img class="size-full wp-image-983" title="yukon_tn" src="http://www.hmmh.com/blog/wp-content/uploads/2011/12/yukon_tn.jpg" alt="" width="144" height="100" /></a><p class="wp-caption-text">Yukon Cornelius</p></div>
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<p>But that&#8217;s not end of the story, of course. Rudolph and his friends leave the Island to confront and overcome their fears (though Yukon dies and is raised from the dead &#8211; but that&#8217;s another story).  Santa sees his own errors of judgment and together Santa and Rudolph redeem the Misfit Toys.  And we hear them exclaim, as they fly out of sight — Happy Christmas to all, and to all a good night.</p>
<p>Up next:  The Grinch</p>
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		<title>Standing on the shoulders of giants</title>
		<link>http://www.hmmh.com/blog/?p=971</link>
		<comments>http://www.hmmh.com/blog/?p=971#comments</comments>
		<pubDate>Tue, 13 Dec 2011 17:43:08 +0000</pubDate>
		<dc:creator>admin</dc:creator>
				<category><![CDATA[Uncategorized]]></category>
		<category><![CDATA[ACRP]]></category>
		<category><![CDATA[bbn]]></category>
		<category><![CDATA[noise]]></category>
		<category><![CDATA[schultz]]></category>
		<category><![CDATA[sleep disturbance]]></category>

		<guid isPermaLink="false">http://www.hmmh.com/blog/?p=971</guid>
		<description><![CDATA[by Nick Miller Ted Schultz was one of my early mentors when I began my career in noise and acoustics.  When I first joined Bolt Beranek and Newman Inc. he was consulting to HUD, providing technical background for its noise abatement standards.  Throughout that impressive and detailed work, he considered annoyance as one of the [...]]]></description>
			<content:encoded><![CDATA[<p>by Nick Miller</p>
<p>Ted Schultz was one of my early mentors when I began my career in noise and acoustics.  When I first joined <a title="bbn homepage" href="http://www.bbn.com/" target="_blank">Bolt Beranek and Newman Inc.</a> he was consulting to HUD, providing technical background for its noise abatement standards.  Throughout that impressive and detailed work, he considered annoyance as one of the important reactions to noise and, I believe, collected and analyzed social surveys relating annoyance to sound levels.  As a further outcome, in 1978, Ted published in the Journal of the Acoustical Society of America, his “Synthesis of social surveys on noise annoyance,” (see also <a title="Nick Miller blog post" href="http://www.hmmh.com/blog/?p=538" target="_blank">my blog of April 2010</a> ).  This article provided in its Figure 6 a curve giving percent of people highly annoyed as a function of noise exposure in terms of day-night average sound level.  This curve became associated with much of present federal policy for determining noise “impact” and is commonly called the Schultz curve.</p>
<p>For the past few years, there has been general concern that this curve may no longer accurately represent how people respond to aircraft noise.  Because Federal Aviation Administration noise policy is required by legislation to use a system of noise measurement that has “… a highly reliable relationship between projected noise exposure and surveyed reactions of individuals to noise….” (<a title="noise exposure report" href="http://codes.lp.findlaw.com/uscode/49/VII/B/475/I/47502" target="_blank">49 U.S.C Section 47502</a>) it is important that the relationship of annoyance and noise exposure be reliable and reflects current conditions.</p>
<p>The <a title="transportation research board acrp project" href="http://apps.trb.org/cmsfeed/TRBNetProjectDisplay.asp?ProjectID=3037" target="_blank">Airport Cooperative Research Program</a> is sponsoring research to design a new national survey of annoyance reactions and sleep disturbance caused by aircraft noise.  One objective is to develop an up-to-date, unbiased estimate of the annoyance / noise exposure relationship for US airports and surrounding communities – potentially an update of the Schultz curve.   We were fortunate enough to put together a team and a winning proposal to conduct this research.  Now, I must say that I knew Ted Schultz, Ted Schultz was a friend of mine, and I’m certainly no Ted Schultz, but I am nevertheless honored to be leading this team in work that is a direct follow-on to Ted’s impressive  accomplishment.</p>
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