<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="Generator" content="Microsoft Word 15 (filtered medium)">
<style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:MinionPro-Regular;
panose-1:2 11 6 4 2 2 2 2 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;}
@page WordSection1
{size:8.5in 11.0in;
margin:1.0in 1.0in 1.0in 1.0in;}
div.WordSection1
{page:WordSection1;}
/* List Definitions */
@list l0
{mso-list-id:667369832;
mso-list-template-ids:-568266500;}
@list l0:level1
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level2
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:1.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level3
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:1.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level4
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:2.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level5
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:2.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level6
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:3.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level7
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:3.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level8
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:4.0in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
@list l0:level9
{mso-level-number-format:bullet;
mso-level-text:;
mso-level-tab-stop:4.5in;
mso-level-number-position:left;
text-indent:-.25in;
mso-ansi-font-size:10.0pt;
font-family:Symbol;}
ol
{margin-bottom:0in;}
ul
{margin-bottom:0in;}
--></style>
</head>
<body lang="EN-US" link="blue" vlink="purple" style="word-wrap:break-word">
<div class="WordSection1">
<p class="MsoNormal">Hi AQers, <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Brian Wee passed along the information below, which you might find interesting and useful.
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Beth <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black">Brian Wee <bwee@massiveconnections.com><br>
<b>Date: </b>Friday, February 26, 2021 at 6:15 AM<br>
<b>To: </b>"beth@lingualogica.net" <beth@lingualogica.net><br>
<b>Subject: </b>Air Sensor Performance Testing Protocols, Metrics, and Target Values for PM2.5 and Ozone
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><o:p> </o:p></p>
</div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt">Beth: just received the announcement below that might be relevant to the AQ cluster, given yesterday's discussion about PurpleAir and calibration
of sensors. - Brian<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:12.0pt">EPA Tools & Resources Webinar</span></b><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:12.0pt">Air Sensor Performance Testing Protocols, Metrics, and Target Values for PM2.5 and Ozone </span></b><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:12.0pt">March 24, 2021</span></b><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:12.0pt;color:black">3:00-4:00 PM ET</span></b><span style="font-size:12.0pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
<p style="margin:0in"><span style="color:black">Lower cost air sensor technologies have flooded the marketplace and are being rapidly adopted by state, tribal and local agencies, community scientists, researchers, health professionals, schools, and many others
to measure air quality conditions. Common applications for air sensors include understanding air quality trends, supplemental monitoring, monitor siting, identifying hot spots, monitoring in remote locations, personal monitoring, and educational and environmental
awareness. While air sensors have become more widespread, it is commonly known that the data quality from these technologies is highly variable. Consistent testing protocols and target values have not been available to uniformly evaluate and compare different
air sensor technologies to better understand their performance in real-world conditions. As a result, there is a lack of confidence in data quality and in selecting sensors that best suit an application of interest.</span><span style="font-size:12.0pt;font-family:"MinionPro-Regular",serif;color:black"><o:p></o:p></span></p>
<p style="margin:0in"><span style="color:black"> </span><span style="font-size:12.0pt;font-family:"MinionPro-Regular",serif;color:black"><o:p></o:p></span></p>
<p style="margin:0in"><span style="color:black">This webinar will highlight two reports developed by EPA</span>’s Office of Research and Development <span style="color:black">that outline recommended performance testing protocols, metrics, and target values
for fine particulate matter (PM2.5) and ozone (O3) air sensors. The reports apply to the use of PM2.5 and O3 air sensor in non-regulatory supplemental and informational monitoring (NSIM) applications in ambient, outdoor, fixed site environments. The anticipated
outcomes of this work are to:</span><span style="font-size:12.0pt;font-family:"MinionPro-Regular",serif;color:black"><o:p></o:p></span></p>
<ul style="margin-top:0in" type="disc">
<li class="MsoNormal" style="color:black;mso-list:l0 level1 lfo1">Provide a consistent approach for evaluating air sensor performance and reporting results;<span style="font-size:12.0pt;font-family:"MinionPro-Regular",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:black;mso-list:l0 level1 lfo1">Help the user community better understand sensor performance;<span style="font-size:12.0pt;font-family:"MinionPro-Regular",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:black;mso-list:l0 level1 lfo1">Assist the user community in making informed decisions on choosing sensors that appropriately suit their NSIM application; and<span style="font-size:12.0pt;font-family:"MinionPro-Regular",serif"><o:p></o:p></span></li><li class="MsoNormal" style="color:black;mso-list:l0 level1 lfo1">Encourage innovation and product improvement in the marketplace. <span style="font-size:12.0pt;font-family:"MinionPro-Regular",serif"><o:p></o:p></span></li></ul>
<p style="margin:0in"><span style="color:black"> </span><span style="font-size:12.0pt;font-family:"MinionPro-Regular",serif;color:black"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt">For more information, please visit: <a href="https://www.epa.gov/air-sensor-toolbox/air-sensor-performance-targets-and-testing-protocols" target="_blank">https://www.epa.gov/air-sensor-toolbox/air-sensor-performance-targets-and-testing-protocols</a><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"> <o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt"><a href="https://gcc02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.eventbrite.com%2Fe%2Fair-sensor-performance-testing-tickets-142569263505&data=04%7C01%7Cmccabe.erin%40epa.gov%7Cd68f478f7a79466cfd7d08d8d9f6fed1%7C88b378b367484867acf976aacbeca6a7%7C0%7C0%7C637499002156415415%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=8%2BdrEM2h6VEgMJF%2BCFXu0eEe5CKFYnXEJ9mJLzh%2Fhg0%3D&reserved=0" target="_blank"><b>Register
for the Air Sensor Performance Testing Protocols, Metrics, and Target Values for PM2.5 and Ozone</b></a><o:p></o:p></span></p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</body>
</html>