Latest / Healthier Together: Larimer County's Public Health Podcast / Protecting Air Quality in Colorado
Transcript
- 0:06Welcome to Healthier Together, Larimer County's
- 0:08public health podcast, where we come together
- 0:10for healthier lives, connected communities, and
- 0:12real conversations. From your local public health
- 0:14team, I'm your host, Tom. And I'm Joanna. Today,
- 0:17we are excited to talk about air quality with
- 0:20Stephanie Shoup, Deputy Director for Regulatory
- 0:23Affairs for the Air Pollution Control Division
- 0:25at CDPHE. Stephanie, thank you so much for joining
- 0:28us. I'm happy to be here. To start, can you tell
- 0:32us a little bit more about the Air Pollution
- 0:34Control Division and the work that you do? Absolutely.
- 0:37So the Air Pollution Control Division is a part
- 0:41of the Colorado Department of Public Health and
- 0:42Environment. So it's an environmental agency
- 0:45and we are tasked with developing and maintaining
- 0:48and implementing the program to protect air quality
- 0:51in Colorado under the Clean Air Act, the Federal
- 0:54Clean Air Act, as well as under the State Air
- 0:56Act. So we are in charge of looking at all things
- 1:00air quality and air pollution and managing all
- 1:03of those programs. How do you collect data about
- 1:07air quality in Colorado? There are a lot of different
- 1:10ways. Part of this really goes into a combination
- 1:17of on -site monitoring that we can do where we're
- 1:20actually measuring different concentrations in
- 1:22the atmosphere. to looking at broad research
- 1:26studies that maybe have been done across geographic
- 1:29areas where we can better understand what might
- 1:33be happening more generally, emission calculations
- 1:36that we can use based on understanding of different
- 1:39types of equipment, as well as looking at federal
- 1:42data that has come out that estimates different
- 1:46types of emission sources or uses other methodologies
- 1:50to try to understand what emissions are coming
- 1:52from different types. of sources. So we kind
- 1:55of look at any and all data sources that we can
- 1:58get our hands on and use that to help inform
- 2:01where we need to focus and where there are opportunities
- 2:04for protecting public health and for trying to
- 2:08address any issues of concern. Here at the health
- 2:12department, we have some air monitoring stations
- 2:15where we collect ambient air data. It sounds
- 2:18like you use data from a variety of sources,
- 2:21from state to local to federal. Is that right?
- 2:26We're, we're big on, a lot of us are engineers
- 2:28and scientists and we really like data. So we,
- 2:31we spend a lot of time looking for where there
- 2:33might be data that we haven't considered or thought
- 2:35of and how it could be used. And I think one
- 2:39thing we've been doing over the last several
- 2:41years in particular is developing really close
- 2:44relationships with academic organizations. So
- 2:47Colorado State University, University of Colorado,
- 2:49Colorado School of Mines, we've worked really
- 2:51closely with all of them, but also universities
- 2:54like University of Colorado. of Texas or Stanford,
- 2:57even Harvard. So working with these different
- 3:01academic organizations who are looking at different
- 3:03elements of air quality research and really trying
- 3:08to better understand how we can use the research
- 3:11they're doing to better inform our policies,
- 3:13but also how we can give them better information
- 3:16on the questions we have. So maybe they can be
- 3:19using that as they're developing their future
- 3:21research studies. What are the primary causes
- 3:24of poor air quality here in Colorado? Poor air
- 3:29quality is an interesting concept because we
- 3:32have different rules and requirements. depending
- 3:36on the pollutants type. And so we have a lot
- 3:39of different pollutants where we are nowhere
- 3:41near any kind of health standard. So we sometimes
- 3:45think of poor air quality kind of in this macro,
- 3:47it's either good or it's bad. And that's not
- 3:49really the case in reality, right? The truth
- 3:52is that we were always somewhere in the middle.
- 3:55There are certain pollutants where we have days
- 3:58where we have poorer air quality because Those
- 4:02pollutants like ozone are really high on those
- 4:05days. And then other days where that is very
- 4:08low, most of the winter, we're not dealing with
- 4:11any kind of ozone concerns. Right. So it really
- 4:14depends. Particulate matter is another one where
- 4:17when we have smoke coming from wildfires, we
- 4:19have really poor air quality specifically due
- 4:21to particulate matter. And then other days, most
- 4:25of the time where it's completely fine for particulate
- 4:28matter. So I think. You know, the primary sources
- 4:32that we're dealing with here in Colorado are,
- 4:36again, those wildfires. That's a really big problem.
- 4:38But when we're talking about things that we have
- 4:41some control over, a lot of this is coming from
- 4:45cars. We have to really think about this as like
- 4:47a local, regional and global issue. There are
- 4:50issues around total emissions coming from the
- 4:53state. But then there are also issues around
- 4:55where is that pollution coming from and is it
- 4:57concentrated in a specific area? So part of the
- 5:00reason we have this ozone non -attainment area
- 5:02is because we have a lot of concentration of
- 5:05sources, cars, oil and gas, other manufacturing
- 5:10and industrial sources, plus a lot of people
- 5:13right here. In a geographic area that's really
- 5:17prone to kind of trapping and holding that pollution
- 5:19and allowing it to turn into ozone. So and having
- 5:23a lot of sunlight, which we all love, that helps
- 5:26that turn into ozone. So we have some some unique
- 5:29things. So that's more about the concentration
- 5:31as opposed to just kind of statewide being a
- 5:35huge problem. It's really more concentrated in
- 5:37this area. So it really depends on what part
- 5:40of the state you're in, what the biggest sources
- 5:43of. air pollution might be in that area. So for
- 5:47people who are curious about what the air quality
- 5:50in their region looks like and what that historical
- 5:52data looks like, is there a place they can go
- 5:55to see air quality data for their region? We
- 5:58have so much data online. This has been something
- 6:02we've been working on really diligently over
- 6:05the last many years. interest from our legislature
- 6:15in air quality since around 2020, 2019. And with
- 6:21that, they gave us quite a bit of money and a
- 6:24lot of resources to start building things that
- 6:26make information more publicly accessible in
- 6:29a way that we weren't able to always, just didn't
- 6:32have the resources to do in the past. And so
- 6:35that's been a really exciting thing as someone
- 6:37who's been with the Air Division for a really
- 6:39long time about trying to make this information
- 6:42more publicly accessible, but also more accessible
- 6:46to understand, not just here's a bunch of data,
- 6:50because that's something that we kind of, we
- 6:52love data. And so we put a lot of data out there,
- 6:55but we're also working really hard on how do
- 6:58we make that data better understandable to the
- 7:01general public. So we have a lot of different
- 7:02sites on our website, and I'm happy to share
- 7:05those with you. It's hard for me to just say
- 7:07what they are, but there are a lot of different
- 7:09ways that you can go in. We have some maps where
- 7:12you can go in and kind of zoom in on areas, see
- 7:14what sources are around you, click on those sources
- 7:16and see more information about them. So there
- 7:19are a lot of different ways to look at different.
- 7:21data sources that we're putting up on our websites.
- 7:24Speaking of making air quality data easy to understand,
- 7:27I think air quality in particular, there can
- 7:30be a lot of information to parse when you try
- 7:33to look to understand. If someone is just trying
- 7:36to plan their day to know how to limit their
- 7:40exposure potentially to ozone or particulate
- 7:42matter, maybe they have someone who's more vulnerable
- 7:45to poor air quality in their family. What would
- 7:50you suggest people look to to kind of plan their
- 7:54day -to -day activities around poor air quality
- 7:56days? Yeah, we have alerts. So we often put those
- 8:00on like our Facebook pages or other social media
- 8:03pages. We also have a website that specifically
- 8:06has those kinds of alerts. It's really around
- 8:10trying to provide the information so people can
- 8:12make choices. Some people are going to be more
- 8:14sensitive to particulate matter, for example,
- 8:17and therefore they may want to take extra precautions
- 8:18on those days, whereas others may feel very comfortable
- 8:22still interacting. acting in the world as they
- 8:26normally do. So we just want to make sure that
- 8:29information is available and that they understand
- 8:31when those different pollutants kind of go up
- 8:34or down so that they can make decisions for themselves.
- 8:37What sorts of activities or policies does CDPHE
- 8:41use to address air quality concerns at the state
- 8:44level? So many. We're pretty active and have
- 8:48always been at Looking within the authorities
- 8:52that we have, because our authorities are dictated
- 8:55by statute and by what the legislature has said
- 8:58we can do. But to say, how do we use those to
- 9:02best? affect actual emission reductions where
- 9:06we really need them and where people are going
- 9:08to benefit from that. And so we are always looking
- 9:11for and evaluating what kind of policies can
- 9:14we put into place. Some of those can be in the
- 9:16form of rulemakings where we develop a new rule
- 9:19or we revise an existing rule to pull new things
- 9:23in or have additional requirements on source
- 9:26types. So oil and gas is a great example of that.
- 9:29We've done a tremendous amount of work on regulating
- 9:31oil and gas since 2018. and even prior to 2014
- 9:34that has resulted in some of the strictest oil
- 9:38and gas rules in the entire world. And there
- 9:42are a lot of other areas where maybe we haven't
- 9:43had quite as much focus on. And so we're really
- 9:46looking at those now to say, OK, how what else
- 9:49do we need to get to? Because it's one thing
- 9:51to say, yes, we can reduce from this source.
- 9:54But we really need to be looking kind of across
- 9:56where are the best benefits to reduce emissions.
- 9:59We've also seen priority toxic air contaminants
- 10:03where we've been able to give we've gotten authority
- 10:05just only in the last few years to actually regulate
- 10:08those directly. Prior to that, we did not have
- 10:11permission or authority in the statute to regulate
- 10:14those pollutants. And so that's a very exciting
- 10:17thing as someone who has worked to try to reduce
- 10:21emissions from. from air toxics through other
- 10:24mechanisms. But now we have very direct authority
- 10:27to reduce those emissions. And so that is a program
- 10:30that's going to take a long time to really truly
- 10:31build out. But we've started it. And that's a
- 10:34really exciting thing. So a lot of different
- 10:37ways. You know, other ways that we look at this
- 10:39are what are we doing in permitting? How are
- 10:41we? Are there ways that we can adjust or change
- 10:45permit conditions to make sure that things are
- 10:49well communicated and that we can show when they're
- 10:52not complying so that we can then go pursue enforcement,
- 10:55which then ultimately turns around and changes
- 10:57behavior as well. So there are a lot of different
- 11:00ways that we try to accomplish this. We also
- 11:03do a lot of outreach. I mean, a part of the reason
- 11:05why we do so much. outreach not only to the community
- 11:09but also to industrial sources is because sometimes
- 11:12it's an education problem. You know, we need
- 11:16to make sure they know what they're supposed
- 11:17to be doing so that they can have the opportunity
- 11:19to comply and actually reduce those emissions.
- 11:22And so we do a lot of that kind of outreach.
- 11:24But we also do it within the community and within
- 11:26the public because a lot of that pollution is
- 11:29coming from sources we can't directly regulate,
- 11:32like your car. We can't tell you you can only
- 11:34buy a car that can do this. Right. We don't have
- 11:38the authority in Colorado to do that. That's
- 11:40a federal requirement. They can kind of set standards
- 11:43across all cars, but we cannot set individual
- 11:46standards on you as an individual and what car
- 11:48you buy. But we can tell you, OK, here are the
- 11:51pros and cons of these different types of cars.
- 11:53And we can tell you, oh, we have some money that
- 11:56we can offer for electric vehicles so that we
- 12:01can see a reduction in emissions in these localized
- 12:04areas where we really need to see them. So the
- 12:07Denver metro area or any metro area is a really
- 12:09great example. The more electric you have in
- 12:12those concentrated areas. the better because
- 12:16you're reducing the emissions from that local
- 12:18area and allowing for healthier environment in
- 12:23that local area because now you've relocated
- 12:26those emissions to somewhere else where they
- 12:28can be better controlled by power plants. So
- 12:30there's good and bad with all environmental strategies
- 12:34have to be balanced. But really, when we're thinking
- 12:39about this, we have to think about it from. How
- 12:41is this going to help and is it going to accomplish
- 12:44the goal? And so we're always thinking about
- 12:46that. I saw that CDPHE recently adopted measures
- 12:49to control emissions of five new priority air
- 12:52toxic contaminants. Can you tell us a little
- 12:55bit more about those new regulations and how
- 12:57we hope they'll impact air quality in the state?
- 13:01Absolutely. So I mentioned a little bit before,
- 13:04but we really didn't have permission, right,
- 13:07under the statute to regulate hazardous air pollutants
- 13:11historically. It was very limited to only what
- 13:15the federal government had done. And that changed
- 13:18about four years ago. And we were assigned the
- 13:22task, which we were very happy to do, to go and
- 13:25look and identify five priority toxic air contaminants.
- 13:30thousands and thousands of hazardous air pollutants
- 13:32out there. And there are even more that are not
- 13:36considered hazardous air pollutants, but that
- 13:38we might consider toxic air contaminants. So
- 13:40we looked at them and tried to understand which
- 13:44are the ones that are going to have the most
- 13:46opportunity for reductions and the most public
- 13:49health benefit if we address those. And so that's
- 13:52what we did with the first five. The priority
- 13:54toxic air contaminants are things like benzene,
- 13:57formaldehyde, ethylene oxide, hexavalent chromium,
- 14:00and H2S, which is hydrogen sulfide. So those
- 14:04are the five that we identified as being the
- 14:07ones to prioritize first and to really look at.
- 14:12And so there were several steps and several rulemakings
- 14:14that went into getting to the point where in
- 14:17April we were able to bring emission control
- 14:20requirements to the Commission for Adoption.
- 14:23For each of those five, where there are now requirements
- 14:27for some sources of those pollutants to reduce
- 14:33their emissions, either by having an emission
- 14:35standard or by having a new control requirement
- 14:38or by... looking for leaks more often or seeing
- 14:43things that they have to fix more frequently.
- 14:46So there are a lot of different ways. It also
- 14:49could be that they're replacing the use of a
- 14:51certain product. Hexavalent chromium is something
- 14:54that you use in chrome plating. And so... If
- 14:59they use a different type of chemical, they can
- 15:02reduce their hexavalent chromium emissions in
- 15:05their area just by using a different chemical
- 15:07compound to do the chrome plating. So there are
- 15:11a lot of different options, and that's where
- 15:13we started, and we're really excited about those
- 15:15emission control requirements. Where else do
- 15:18those five air toxic pollutants come from typically?
- 15:21They come from a lot of industrial practices,
- 15:24and they're all... All five of them are actually
- 15:27very distinct in terms of the type of industry
- 15:31that they tend to come from. There are some overlaps,
- 15:34but a lot of them are kind of distinct, which
- 15:38did make that a very challenging rulemaking.
- 15:40I mentioned before that hexavalent chromium is
- 15:43a part of chrome plating. And so that's one of
- 15:46the places where those can come from. Another
- 15:49one, there are four others. So ethylene oxide
- 15:52that comes through medical equipment sterilization.
- 15:56We really want to have medical equipment that
- 15:59is healthy and safe to be used in doctor's offices
- 16:01and hospitals. But the sterilization that they
- 16:05use ethylene oxide to actually sterilize that
- 16:07equipment. And when that comes out, it is. considered
- 16:10a priority toxic air contaminant. It's not very
- 16:13healthy for us to breathe. Benzene is another
- 16:17that comes from the refinery, that comes from
- 16:20oil and gas sources. We focused primarily on
- 16:23refineries in this particular rule, largely because
- 16:27so much of the work that we've done on oil and
- 16:29gas over the last decade plus has also reduced
- 16:33a lot of benzene. Benzene is a component of natural
- 16:36gas, so everything we did to reduce our emissions.
- 16:39of other things also reduced benzene kind of
- 16:41at the same rate. So it just really made sense
- 16:44to focus where we did for benzene. Formaldehyde
- 16:49is an interesting one because it comes from anything
- 16:52that burns fuel. So it is generated during wildfires.
- 16:57Any cars or engines or any kind of equipment
- 17:00that non -road engines, so any of the construction
- 17:04equipment out there that's burning fuel, any
- 17:07of those will emit formaldehyde. But it's also
- 17:10something that as the normal process of breakdown
- 17:13of organic compounds in our atmosphere, it also
- 17:17just develops in the atmosphere. Develops when
- 17:20we're burning it at kind of these concentrated
- 17:22levels, but also when it's just breaking out
- 17:26down normally in the atmosphere. It also develops
- 17:29formaldehyde. It's just one of the products.
- 17:32And so that one can be a little bit tricky to
- 17:34try to get a handle on and where is it coming
- 17:37from in a particular case if we're measuring
- 17:39it. But we focused really on engines for that
- 17:42one. And then the last one was hydrogen sulfide,
- 17:46which is a component that often comes from wastewater
- 17:49treatment plants or other kind of breakdown of
- 17:52waste, of organic waste. But it also comes from
- 17:57fossil fuel extraction and refining because,
- 18:01again, fossil fuel and refining are just really
- 18:04old organic matter. And so it is something that
- 18:06can kind of come from that process when there's
- 18:09sulfur in that. mixed in there that will actually
- 18:13generate H2S, which is kind of the stinky component
- 18:16a lot of the time of what we think about coming
- 18:20out of a wastewater treatment. But it also is
- 18:23not great to breathe in high quantities or in
- 18:27high doses. And so it's just another one that
- 18:31we wanted to prioritize. CDAPHE also does a lot
- 18:34of air quality education and outreach and has
- 18:37lots of great resources for people who want to
- 18:40learn more about air quality or get involved.
- 18:42Can you tell us a little bit more about that
- 18:44component of your work? Absolutely. This is one
- 18:48of the things that I'm so incredibly excited
- 18:50about. We have... done a lot over the last six
- 18:55or seven or eight years to go from not really
- 18:58having a whole lot of formalized outreach to
- 19:01having whole programs that only do outreach and
- 19:05their goal is just to make better relationships
- 19:08with communities provide better information build
- 19:11out our websites so there's an incredible amount
- 19:15of work that goes in With our with our team that
- 19:19actually goes out into the community. And one
- 19:21of the things that they've been doing is putting
- 19:24together either. kind of generalized air quality
- 19:27101 types of trainings just to talk about what
- 19:30does it mean? What does air quality mean? What
- 19:32does that mean in the sense of what they can
- 19:34do? And then also where there are specific concerns
- 19:39or if there are areas of interest or when we
- 19:43are going to do a rulemaking, for example, we
- 19:45will have a lot more outreach to communities
- 19:48that might be affected as well as the public
- 19:50in general and talk about what it is that we're
- 19:53considering doing. why we're considering doing
- 19:56it in the way that we're proposing, what that
- 20:00means, and what kind of options can we take or
- 20:04what kind of information can we take to make
- 20:06sure that we are taking into consideration the
- 20:10feedback that we get from the public and from
- 20:12communities. And so there's a lot of really neat
- 20:16opportunities to learn more. And we hope that
- 20:21people will take the time to go and look. At
- 20:25all of the websites that we put together, we
- 20:28have a lot of different really data heavy websites.
- 20:31So you can go if you want to like go down into
- 20:33the weeds, but also higher level. Like this is
- 20:36kind of generally what this stuff means on our
- 20:39website to try to provide information at whatever
- 20:42level is most helpful to different people. So
- 20:45that has been, I think, one of the things I'm
- 20:48most proud of the division in doing over the
- 20:51last several years is developing out that program.
- 20:54We've talked a lot about policies at the state
- 20:58level that can help improve air quality. Are
- 21:02there steps that individuals can take in their
- 21:05day -to -day lives to help improve the air quality
- 21:07in their region? Yeah, absolutely. Some of the
- 21:12things that we as an air agency have the hardest
- 21:15time trying to address are things that have to
- 21:18do with kind of personal behavior. And that might
- 21:22be what kind of lawn equipment you buy and use,
- 21:26whether it's electric or it's gas powered. What
- 21:29kind of choices you make in terms of vehicles.
- 21:33You know, we do. provide incentives for purchasing
- 21:36electric vehicles but that is still not necessarily
- 21:39readily available to a lot of people but there
- 21:43are still things that can be done like filling
- 21:45up your car later in the day because every time
- 21:48you fill up your car there are volatile organic
- 21:50compounds that come out that mix with the other
- 21:53pollutants and create ozone and so anything that
- 21:56that can be done to kind of limit those all being
- 22:00in our atmosphere in that hottest part of the
- 22:04day the better um so a lot of times especially
- 22:08when it comes to ozone it's not about total it's
- 22:11kind of about win. There's a lot of emphasis
- 22:14on win because it's when we have those really
- 22:16long, sunny days that we tend to have a lot more
- 22:21ozone development. And so if we can reduce emissions
- 22:24during those time periods to be later in the
- 22:27evening or early, early morning, then we can
- 22:30potentially see some benefit. And everyone is
- 22:35definitely important to contribute to that. So
- 22:38another thing is just Fires, as much as we all
- 22:43love our fires, and I certainly am one that does,
- 22:46we, you know, look at air quality in our kind
- 22:50of local area and our neighborhoods. And sometimes
- 22:53you have poor air quality because we've got a
- 22:57certain weather event. And then if everyone's
- 22:59burning their fires, then that can create issues,
- 23:02whether it's an indoor or outside kind of fireplace.
- 23:05And then, of course. Please be careful this summer
- 23:10for wildfire protection because I think we all
- 23:13know that we have a higher risk this year and
- 23:15we want to make sure that people are safe and
- 23:19healthy and we would love to see as much prevention
- 23:22of wildfires as we can for all of our benefit.
- 23:25If people would like to learn more about air
- 23:27quality, sign up for alerts this summer, find
- 23:31historical data, any of the things that we talked
- 23:33about today, where can they go to do so? We have
- 23:36some really great websites that we can provide
- 23:40people and we will provide those to you that
- 23:42you can absolutely please share. We've also got
- 23:46email listservs that people can sign up for.
- 23:49So if there are specific topics that you're interested
- 23:51in, we can sign up for that listserv and then
- 23:54you'll get the emails anytime that we are going
- 23:56to be doing something related to that topic.
- 23:58So I really hope that. If you're interested in
- 24:02learning more, that you go and take a look at
- 24:05our websites, see what we've got. We'll share
- 24:08all of that detail with you here. And please
- 24:13get involved and contribute and help us all have
- 24:17good and better air quality as we move forward.
- 24:22Awesome, Steph. Thank you so much for joining
- 24:24us today. Of course. Thank you. To learn more
- 24:27about the Air Pollution Control Division or sign
- 24:30up for air quality alerts, visit cdphe .colorado
- 24:34.gov slash apcd. You can also find that link
- 24:40in today's show notes. Do you have a question
- 24:47about public health in Larimer County or a topic
- 24:50you'd like us to discuss? Let us know. Email
- 24:53us at healthiertogether at larimer .org. Thanks
- 24:56for listening, Larimer County. Until next week,
- 24:59stay well, stay connected, and remember, we really
- 25:01are healthier together.