Colorado Public Works Journal, Fall/Winter 2022

PUBLIC WORKS COLORADO J O U R N A L THE ROAD AHEAD FEATURE: Denver Water FEATURE: Industry Insights COLUMNS: Association News Fall/Winter 2022 : Vol.18, No.6 - $4.95

The Colorado Public Works Journal - Jo Taylor, Managing Editor Editor REMEMBER that Colorado Public Works Journal can be read online, on your phone, tablet or other mobile device. Please go there, take a look and let us know what you think. Events back to back, trade shows, golf tournaments, award galas, you name it, CPWJ have been there. Businesses are flourishing and employment is on the rise for those seeking well paid rewarding careers in the construction industry. Our Careers in Construction feature last issue, is now in circulation across the state from schools, to career fairs and at college campus’s to whet the appetite of students who want to dive into our industry, but do not know how or where to start. Transportation and Construction GIRL Day hosted over a 1,000 attendees this year, 600 of which were high school girls. At the CPWJ booth we were able to capture their faces as a construction worker for fun – see photo below. Talking to the many girls that came by we learnt that their dream jobs were; Nail Artist, Cosmetologist, Pilot, Welder, Photographer, Lawyer, but my personal favorites were “Fiore & Sons” and “Mortenson” How impactful is that? Would these girls even know of these companies and what they did, had they not attended the event? I think not. Someone from outside our industry who was observing the entire event said: When I graduated in 2016 from Dakota Ridge High School at 17 years old, I thought that going to a traditional 4-year college to study business or medicine was my only choice as that’s what many of my friends were doing. After graduation and the pressure of making a decision, I reluctantly agreed to attend Colorado State University, even though I wasn’t really sure what I wanted to study, or what I wanted to do for a career. I had no idea how many other options there were in other industries. Transportation and Construction Girl was an eye-opening experience for me even six-years later, at just how many jobs there are in different industries for high school graduates that want hands on work. As I explored different booths at the event, many of them sparked my interest. From electrical wiring and landscaping, to building bridges and automotive paint detailing, I was able to learn a lot more about the transportation and construction world, and how many opportunities there are for growth and development in many different careers. I am so glad that this event is held each year and that so many kids at different schools around Colorado are able to experience the fun energetic atmosphere of the event while also being exposed to so many new ideas as to how they can change the world. There are so many options for fulfilling careers and I wish I had a chance to attend an event like this when I was in high school - truly inspiring. — Olivia We are now working on Advertising Contracts for 2023. If you would like your business to benefit from the exposure in this publication here in your hands and our on line version, just let me know. As we move into the holiday season it seems timely to say that we at Colorado Public Works Journal are grateful for all your support and we appreciate you and all that you do for the industry in Colorado. Happy Holidays! Apology: To Stacia Sellers at CDOT for the incorrect title to her column in our Fall issue. It should have been titled “Central 70 Update”.

4 Colorado Public Works Journal 06 Works News Equipment 08 Works News People 09 Works News Updates 12 Denver Water Northwater Treatment Plant 19 The Road Ahead Fall 2022 53 Industry Insights Jim Lochhead 54 Association News APWA, ACEC, RTD, CDOT, ACPA, CCA, CAPA, CSSGA 62 PS! (Parting Shots) Out and about at industry events in Colorado 66 Advertisers Index Our Corporate Partners Contents Cover Image: Building Solar Panels downtown Image copyright © Denver Water page 12 COLORADO PUBLIC WORKS JOURNAL (ISSN 1555-8258) is published bimonthly in January, March, May, July, September and November CPWJ is published by Coterie Press Ltd., 5 White Birch, Littleton, CO 80127. (303) 933-2526 Managing Editor: Jo Taylor, (720) 360-6737 Editor: William Taylor (303) 933-2526 Volume 18. No.6, November 2022 Fall/Winter 2022 : Volume 18, No.6 Production: Coterie Press Design: Violet Cruz Printed by: One Stop Printing Subscription, Mailing Services and Accounting Subscription $30.00 per year in the USA Periodicals Postage Paid in Denver, Colorado. Postmaster: Send address changes to: Coterie Press Ltd., 5 White Birch, Littleton, CO 80127. Contents copyright © 2022 by Coterie Press Ltd. All rights reserved Colorado Public Works Journal is an independent publication designed to be of service and interest to those providing civil services related to infrastructure construction and maintenance and allied fields, including government officials, heavy/civil contractors, engineers and architects, distributors, dealers and manufacturers of equipment and materials, and providers of services to government agencies and the construction and development industry Colorado Public Works Journal accepts no responsibility or liability for the validity of information and articles supplied by contributors, vendors, advertisers or advertising agencies. Opinions expressed are those of the individual writers and do not necessarily represent the views of the publishers of CPWJ.

6 Colorado Public Works Journal EQUIPMENT Works News John Deere Continues Performance Tiering Rollout John Deere has launched its line-up of large wheel loaders as part of its Performance Tiering Strategy. Now available in the U.S. and Canada, the 744 P-tier, 824 P-tier, 844 P-tier, and the new 904 Ptier Wheel Loaders offer advanced productivity features, increased job-site reliability, optimal operator comfort, and enhanced serviceability to help improve machine uptime. Expanding on the industryproven line-up of John Deere wheel loader offerings, the P-tier models are ideal machine solutions for customers looking to tackle even the toughest jobs with ease. “Whether the machines are working at the face or loading trucks, John Deere customers can be confident that the P-tier machines will provide exceptional performance all day – even in the most rugged applications,” said Luke Gribble, solutions marketing manager, John Deere. ”Building upon the improvements introduced on the L-series loaders in 2019, the P-tier models incorporate even more technology advancements, providing our customers with a line of dependable and strong wheel loaders to meet the demands of the aggregates industry.” The 744 P-tier, 824 P-tier, and 844 P-tier Wheel Loaders offer exceptional results at high levels with reliable components such as extra-durable axles and high-performing transmission capabilities, helping to boost overall machine efficiency on the job. To improve machine performance while heading into piles, all P-tier loaders include a standard lockup torque converter that adds additional torque during operation and increases shift quality. In addition, the 744 P-tier and 824 P-tier models feature ground-level servicing, including a remote engine oil dipstick and improved electrical and hydraulic routing, to improve serviceability and get your machine back on the job sooner, increasing uptime. Combining the productivity-increasing features with a redesigned cab and controls, the 744 P-tier, 824 P-tier, and 844 P-tier Loaders provide the muscle needed for operators to work comfortably and efficiently. The redesigned cab gives the operator more space, storage, and enhanced visibility during operation. Additional features that improve operator comfort and performance include adjustable heated and ventilated seats and an upgraded HVAC system. To learn more about the P-tier Wheel Loader models, contact your local John Deere dealer or visit Komatsu stores in the Northeast to carry Genesis attachments When choosing demolition or recycling attachments, customers demand products that can excel in and withstand those tough applications. Because Genesis has earned an excellent reputation as a provider of high-quality attachments, the Komatsu company-owned stores in the northeast region will now offer attachments from Genesis. "We have partnered with Genesis to offer their products to our customers because they are a global leader in shear, concrete processor and grapple innovation," said Mike Kubas, Vice President, Komatsu company-owned stores. "Their excellent post-sale customer support and technical service is well-aligned with our strategy, and very complementary to the products we currently sell to our customer base.” Demolition attachments Designed with features including multiple jaws with quick change-outs, reversible blades and teeth, and streamlined internal components that require low maintenance, Genesis demolition attachments easily process concrete, rebar and steel in high-reach, general and bridge demolition, concrete recycling, and C & D material recycling applications. Recycling attachments Genesis mobile shears and grapples are designed to increase scrap processing speed, efficiency and handling. Available in 22 models, GXT shears fit a wide range of excavators to meet application needs, while Genesis scrap grapples and handling grapples provide large capacities to quickly move material. "We are excited to bring our experience and industry-leading products and support to these Komatsu customers,” said Justin Palvere, Director of North American Sales, Genesis. “Together, we can better serve the demolition and scrap industries."

Fall/Winter 2022 7 EQUIPMENT Works News Hamm: Low-emission compaction with environmentally friendly solutions For many years, Hamm has been developing fuel-efficient machine technology in order to achieve an efficient and, in turn, resourceconserving workflow on the construction site. One milestone included the Power Hybrid roller from the HD+ series. With eight electrified tandem rollers, Hamm is now entering the segment for fully electrical construction machines. Resource-conserving power train In all current series, the power train has been continuously optimized and designed for operation at reduced speeds. The operating companies therefore save fuel each day. The automatic engine stop also reduces consumption: It automatically switches off the engine after a few minutes of downtime, while also taking into consideration the requirements for the exhaust gas cleaning systems. The ECO mode, which is integrated into all series, also helps the driver to compact in a way that they can easily save fuel. Quiet Power Hybrid rollers save CO2 Back in 2016, Hamm was already the first manufacturer in the world to combine a diesel engine with a hydraulic accumulator for the development of alternative drives. With this Power Hybrid roller from the HD+ series, it was possible to reduce the fuel expenditure by around 15% – all without having to compromise on compaction power. This was also coupled with a reduction in noise emissions. Emission-free compaction with electric tandem rollers More and more municipalities are demanding low-emission or completely emission-free construction machines. In future, wherever compaction must be carried out free of emissions, the electrically powered tandem rollers in the HD CompactLine series can take over the compaction. When operating the electric tandem rollers, there are no differences to the diesel-powered models, and even the compaction power is identical. Fully electrical solution Conceptually, Hamm is relying on a fully electric solution: Thanks to a high degree of electrified components, the compaction specialists achieve an optimal energy yield. A maintenance-free Li-ion battery with a capacity of around 23 kWh supplies the components via a 48 V on-board power supply. Furthermore, the energy released from the drive engines and vibration motors when braking is used via recuperation. The bottom line is that the battery can be used to tackle an entire working day. To charge the permanently installed battery, plugs for 230 V and 400 V mains power are included on-board. Electric combination roller with oscillation: Quiet, low-vibration and emission-free The electric drive also drastically reduces the noise emissions since there is no longer any noise from the engine. This makes the electric tandem rollers ideal for all areas in which you want to compact with as little noise as possible. Since, in these environments, a low load with vibrations is often required, the compaction specialist is presenting electric vibration and oscillation rollers, as well as an electric combination roller with oscillation. This means that Hamm is the only manufacturer in the world to offer a tandem roller that works quietly, with low vibrations and free from emissions. Operating with biodiesel and HVO Most of the Hamm rollers that are currently on the market can already be operated with non-fossil fuels. This includes biodiesel, i.e. diesel fuel that is derived from plants, as well as HVO (Hydrotreated Vegetable Oil). These can be mixed in with the diesel fuel or can replace it entirely. This also includes biodegradable hydraulic oils for the standard product range.

8 Colorado Public Works Journal PEOPLE Works News Jessica Ray - VP of Business Development Naranjo Civil Constructors is proud to announce the hiring of Jessica Ray as VP of Business Development. Jessica has 16 years of diverse construction industry experience in estimating, subcontractor/supplier management, contract management, DBE and community outreach, proposals, marketing, branding, and business development. She played an active role in developing and branding the Colorado Contractors Association’s Emerging Leaders Council, of which she served three years on the steering committee. Jessica has led various community outreach and fundraising campaigns and is known for her positive attitude, collaborative nature, and relentless work ethic. As VP of Business Development, she will create growth strategies that align with Naranjo’s vision while strengthening relationships with current and prospective industry partners. Jessica is passionate about building synergy among employees, businesses, and communities with the motto, “together, we achieve more.” Running on the Runway in the Rain! On September 10th at 6am, when it was dark, cold and very wet Colorado Public Works Journal’s Jo Taylor joined over 2,000 runners to complete the very first 5k on the runway at Denver International Airport. This once in a lifetime experience was made possible by the Colfax Marathon in cooperation with the airports operations team. A post race party was held at the United Airlines hanger where participants were able to enjoy breakfast, music and collect swag which included an exclusive medal. Newly Appointed Association Administrator Nicole will be splitting her time between the Colorado Ready Mixed Concrete Association (CRMCA) and the Colorado/Wyoming American Concrete Pavement Association (CO/WY ACPA) and will work with the ACI Certification program and assists with association meetings, office management and membership. Nicole holds a B.A. in Organizational Communications and a minor in Marketing from Metropolitan State University of Denver. She has a background in office management, administrative and executive support, and recruiting. Contact email: CRMCA: CO/WY ACPA: Nicole Aganon new Association Administrator

Fall/Winter 2022 9 UPDATES Works News 2022 Industry Tour Recap The Colorado Stone, Sand & Gravel Association (CSSGA) in partnership with the Colorado Asphalt Pavement Association (CAPA) and the Colorado Ready Mixed Concrete Association (CRMCA) hosted the 2022 Industry Tour on October 5th at the Albert Frei & Sons Walstrum Quarry. CSSGA members, Colorado elected officials and members of regulatory agencies toured the quarry and attended a Lunch and Learn presentation about the mining and aggregate industry. Thank you to all who attended and to Albert Frei & Sons for making this great event possible! If you have any questions contact NOCO holds first ever Construction Con in Loveland The Colorado Department of Transportation and prime contractor, Myer’s and Sons Construction, will begin concrete rehabilitation, wildlife-fencing implementation, and deer guard installations along I-25. The project work zone will begin at Wolfensberger Road in Castle Rock (Mile post 181.75) and end at Lincoln Avenue in Lone Tree (Mile post 192.75). Work begun in April 2022 and is now coming to an end. This project is part of a larger statewide commitment by CDOT to improve roadway surfaces and decrease wildlife related incidents on the interstate I-25 Douglas County Concrete Rehabilitation Northern Colorado Construction Sector Partnership (NOCO CSP) held its first-ever Construction Con event at the Ranch Events Complex in Loveland. This hands-on, immersive construction experience provided over 500 high school students from different schools in Northern Colorado the opportunity to explore the multitude of career opportunities and different pathways into the industry. Over 220 industry and education representatives from different sectors, companies, universities, associations, and apprenticeship programs participated by providing either an activity booth, a job booth, or volunteering to encourage these students to consider a career in construction. Early survey results show that they were successful in this, with approximately 84% of students who took the feedback survey saying that after attending the, they are more interested in pursuing a career or education in construction or a related field. But this wasn't the partnership's only goal of the event. One of NOCO CSP's focal points is to improve the perception of who we are as an industry, what we do, and all we provide within our communities. When this impact is better understood and appreciated, community members are more amiable to see it as the honorable and viable career path that it truly is and can be for themselves, their family members, or their students. To help with this perception and to clarify different sectors, careers, and pathways into the industry, in the weeks leading up to the event, groups of partnership members visited classrooms of schools planning to attend the event to present their pre-built "Pathways into Construction" presentation. The biggest success from the partnership perspective was the unity, support, and camaraderie among industry members expressed during and after the event. You could sense the energy and excitement that seemed to reenergize our industry and remind us all that what we do matters and is pretty dang amazing. Want to get involved? Reach out to the NOCO CSP by visiting

Fall/Winter 2022 11 UPDATES Works News We Hold Safety In the Highest Regard: Trench Safety Summit 2022 - A Collaboration of Industry Professionals For a Full Day of Trench Safety On October 5, 2022 500 construction professionals converged on the Adams County Fairgrounds with one common goal in mind, to learn more about trench safety and help prevent tragedy in the workplace. The North American Excavation Shoring Association (NAXSA) and the Occupational Safety and Health Administration (OSHA) partnered with local associations Associated General Contractors (AGC) of Colorado, Colorado Contractors Association (CCA), National Utility Contractors Association (NUCA) of Colorado and Colorado 811 along with the three shoring companies in the state: National Trench Safety, Sunbelt Rentals and United Rentals to bring a full day of free trench safety training to as many industry professionals as would fit into the Waymire dome at the fairgrounds. The Trench Safety Summit boasted both indoor and outdoor training in the way of live industry professional speakers including the Deputy Assistant Secretary of Labor for Occupational Safety and Health, James Frederick; Ryan Jaffe, Secretary/Treasurer NAXSA; Steve Hanley, General Manager, CERDA Industries; Perry Silvey, Founder TEST (Trenching Excavating Safety Taskforce); Karl Trott, Vice President, Plug Technologies; and the North Metro Fire Department; The outdoor demonstrations including 6 stations were manned by industry professionals and several OSHA Representatives that taught Open Trench – Competent Person Review; Hydraulic Shoring Trench; Shielding Trench; Sloping and Benching; Traffic Control and Rigging. Spanish interpreters were also on hand to assist where needed throughout the day. Participants from 148 companies were represented and asked to participate in roundtable discussions with their peers to determine best practices, identify issues with various scenarios and share answers and examples of what works and ultimately what does not. Not surprisingly, discussion was plentiful and participation was strong during this activity. The first six months of 2022 brought 22 trench related fatalities in the industry. This number surpassed the entirety of trench related deaths in 2021 and OSHA has taken these deaths seriously. These deaths are preventable and through training can be prevented in the future. OSHA has started a National Emphasis Program. Protective systems are required when a trench is more than 5 feet deep. Several municipalities are also taking action in the form of not allowing contractors to continue on jobs if they receive an OSHA violation on a jobsite. It is the hope of the organizations involved in the October 5th Trench Safety Summit that lives are saved in the future from trench collapse. Thank you to our sponsors: Title Sponsors – NAXSA, OSHA, National Trench Safety, Sunbelt Rentals, United Rentals; Breakfast Sponsors - Kloeckner Metals, Pacific Shoring; Lunch Sponsors - Arcosa Shoring Products, Cerda Industries, Glendale Steel Supply, Kloeckner Metals; Outside Exhibit Space - Rinker Materials, Safety & Construction Supply/Tool Zone; Inside Exhibit Table - AGC of CO, CO 811, CCA, Colorado Safety Supply Co., Colorado Barricade, NAXSA, NUCA of CO, OSHA, Plug Technologies

12 Colorado Public Works Journal Denver Water By Tamara Moon We don’t often have the opportunity to experience visions of the future. Like dreams, sometimes it’s hard to imagine and then realize large scale upgrades and new construction for water utilities. Even for large water providers like Denver Water, the task of planning, budgeting and implementing system upgrades, takes years of time. The Northwater Treatment Plant is one of these dream-like projects for water providers, even one as large as Denver Water. NTP is only a portion of significant and necessary upgrades to Denver Water’s northern system. These upgrades are essential to Denver Water’s goal of providing outstanding drinking water to a growing population in Denver and the surrounding suburbs. Northwater Treatment Project

Fall/Winter 2022 13 Project Scope The North System Renewal Program is one of the long-term planning projects that allows Denver Water to meet the demand needs of a growing population while also meeting current and future water quality regulations. While Denver Water has put plenty of capital dollars into expanding and upgrading the 80 year old Moffat Treatment Plant, it can no longer be upgraded, and its location limits the ability for expansion. The North System Renewal Program is a three phase, $600 Million program, that will replace and repurpose North System facilities that were constructed in the 1930s. Planning for the project began in 2010. In 2016, the project commenced with the construction of an 8.5-mile pipeline from Moffat Treatment Plant to Ralston Reservoir. While the pipeline was under construction, Denver Water started the second phase of the project. In 2018 Denver Water, their Owner’s Representative Jacobs Engineering/CDM Smith, and their CMAR contractor Kiewit Corporation broke ground on the new, state of the art, NTP. In early 2021, initial work to repurpose portions of the Moffat Treatment Plant as a storage and distribution facility for water treated at the Northwater Treatment Plant was initiated. Northwater By the Numbers The NTP is the largest construction project Denver Water has undertaken in many years. Replacing a plant that was originally constructed in the 1930s with a facility that is easily expandable, can handle the demands of changing regulations and respond to climate change is an immense undertaking. Here’s the NTP by the numbers. • $520 Million – Construction budget for the NTP • $80 Million – Cost of pipeline construction • 183 – Acre plant site • 150 – Million Gallons per Day build out capacity • 75 – Million Gallons Per Day initial capacity • 100 – Years expected lifespan of the NTP • 2024 – Anticipated completion in February 2024 • 31 – Separate bid packages for construction under the Kiewit CMAR contract. • 16 – Structures on-site • 2 – 10 million gallon clearwells One of the most innovative and sustainable processes that Denver Water has implemented during this project is the “Close as You Go” process. This system allows for individual parts of the project to be closed out at the time of completion instead of waiting for the entire project to be completed. The process includes walk throughs and creation of punch lists, completion of drawings of record and release of retainages.

14 Colorado Public Works Journal In 2021, through this process Denver Water was able to close out four bid packages, accept 93 sheets of record drawings, and release over $1 Million in retainage funds. Sustainable From Start to Finish One of the most impressive parts of the Northwater Treatment Plant is the focus on sustainability. The idea of sustainable operations reaches beyond the plant’s environmental impacts, touching on everything from financial sustainability to growth and operational sustainability. When Denver Water and Jacobs/CDM Smith began planning the design of the NTP, one of the most important factors of the project was to make sure that the plant was not only environmentally sustainable, but that it also fit discretely into the land. Driving down Highway 93, if you didn’t know it was there, you would miss the site all together. The plant site is set in a small valley allowing many of the process buildings to be constructed in the hillside. They are nearly hidden from site, leaving the views unobstructed. This below ground construction serves as another purpose. Utilizing the ground as a natural insulation, Denver Water can reduce the energy demands on the site. Eventually, building roofs will have solar panels and hydropower generators will be installed within the process. Solar and hydropower will generate enough energy to power the entire treatment process at Northwater. One of Denver Water’s core values is sustainability. The NTP when completed will have an Envision Gold Building Certification for the construction and treatment process buildings. The NTP will be the first water treatment plant in Colorado to receive this certification. Additionally, the site administration building will be a LEED gold certified building. While all of this is great for the environment, green building projects often come with hefty price tags. However, Denver Water understood that rate payer impacts needed to be considered when planning the overall project. Site features such as on-site power generation, space for expansion, changes in treatment chemicals, process automation, and reduced maintenance lower the cost of operation. These efficiencies mean more sustainable rates passed on to residential and municipal customers. Without a sustainable and reliable source of income, Denver Water like all utilities cannot continue to provide an exceptional product or reliable customer service to their customers. Much of the cost for the project was bonded, allowing Denver Water to limit rate increases to current and future customers. Preparing for the Future One of the lessons learned over the years by Denver Water is that planning for the future makes more sense than reacting to the needs of today. The NTP is a great example of this experience in action. The plant under construction today will have a capacity of 75 million gallons per day. Based on growth projections this should be enough capacity for the next 20 years. When it’s time to expand, the buildings and treatment processes have been designed to easily accommodate an additional 75 million gallons of demand a day. Add to continued growth, the need to respond to climate change and impacts to water supply from climate change has also been considered in the future of the NTP. Learning from the past, the NTP has been designed so that additional treatment can be added in as little as two years should wildfires impact land within Denver Water’s watershed areas. The treatment process used at the NTP is traditional multi-media filtration. However, the settling phase of the process at the NTP will utilize high rate settling to manage high turbidity water conditions found during flooding events. The process will also use more robust solids handing systems and UV technology for disinfection and treatment of emerging contaminants. During the first few years that the NTP is in operation, the Moffat Plant will remain functional. This will allow Denver Water staff the time to learn and work through the kinks of starting up a new plant. At start up in 2024 the plant will have minimal operation and maintenance staff. Denver Water anticipates that this will reduce costs over time and minimize cost increases that would be passed on to rate payers. Guiding the Future Denver Water has always been an innovator in treatment and sustainability practices for water providers. The Northwater Treatment Plant and the North System Renewal Program are no exception to this vision. Being both innovative in construction process as well as financially and environmentally sustainable, Denver Water continues to be a leader in the water treatment industry in Colorado and across the United States.

Fall/Winter 2022 15 | 866.608.9283 Contact Purple Wave to sell your equipment today! eMultiple auctions held every week eOur auction dates fit your schedule FAST TURNAROUND eOur team takes the photos and videos e$100 standard listing fee* WE HANDLE EVERY DETAIL eAll equipment is sold “AS IS, WHERE IS” eNo transportation or preparation cost PROVEN SUCCESS Established territories in Colorado with local reps ready to serve you. *fees may vary based on equipment volume and value

18 Colorado Public Works Journal

2 /The Road Ahead WWW.CO-ASPHALT.COM Introduction We are pleased to partner with Colorado Public Works Journal and provide you with the Fall 2022 issue of THE Road Ahead, CAPA’s news magazine. The publication is full of information on our members, our industry and most importantly our product, asphalt pavement materials. CAPA is laser focused on advancing the use and quality of asphalt pavements in Colorado. We hope this publication sparks an idea, a conversation or a follow-up action that supports you in achieving this mission. Let us know how we can help in that lofty endeavor! Welcome to THERoad Ahead! Thomas Peterson, P.E. Executive Director, Colorado Asphalt Pavement Association (303) 741-6150 x152 This week-long course held at the National Center for Asphalt Technology (NCAT) at Auburn University is the premier asphalt training and education course in the United States. The course focuses on asphalt materials and construction and is being held February 27 to March 3, 2023. The joint APWA Colorado Chapter/CAPA Scholarships provide a stipend for travel and lodging and full tuition covered. For more information or to apply, visit CAPA/APWA NCAT Asphalt Technology Scholarships Nominations due by Friday, 12/2 Tom Peterson ECONOMICAL SUSTAINABLE DURABLE

Fall 2022 3 F b N e ruary 7-8, 2023 at ational Western Complex WWW.CO-ASPHALT.COM INDUSTRY NEWS MARK YOUR CALENDARand plan to attend the 50th Annual Rocky Mountain Asphalt Conference & Equipment Show planned for February 8-9, 2023 at the National Western Complex in Denver. Golden Anniversary – Fifty Years of Success is the theme for two action packed days of asphalt related training and one of the largest asphalt trade shows in the country. Exhibitor/Sponsor/Attendee registration – visit Rocky Mountain Asphalt Conference & Equipment Show

4 /The Road Ahead WWW.CO-ASPHALT.COM LOCAL AGENCY NEWS The Value of Using Stone Matrix Asphalt (SMA) on High Traffic Streets and Roads Over 5 million tons of stone matrix asphalt (SMA) have been placed on Colorado roads and highways since 1994. SMA is often the surface material of choice where a highly durable, long lasting and skid resistant surface is required, including Interstate highways, urban arterial roadways, high volume intersections and bridge decks. Stone Matrix Asphalt (SMA) is a tough, stable, rut-resistant mixture. The SMA design concept relies on stone-on-stone gap-graded aggregate to provide strength with a PG 76-28 polymer modified binder to provide durability. Rut resistance relies on aggregate properties rather than asphalt binder properties. Therefore, SMA is almost exclusively used for surface courses on high volume interstates and U.S. roads. Because SMA mixes have a high asphalt binder content, as the mix sits in the HMA storage silos, transport trucks, and after it is placed, the asphalt binder has a tendency to drain off the aggregate – a phenomenon known as “mix draindown.” Mix draindown is typically combated by adding cellulose or mineral fibers to keep the asphalt binder in place. SMA in Colorado is produced and generally available from May 1st thru Oct 31st. The availability of SMA is highly dependent on the production of PG 76-28 polymer modified binder, which is usually only produced in Colorado from May thru October. SMA Construction Season

Fall 2022 5 WWW.CO-ASPHALT.COM LOCAL AGENCY NEWS Although water does not drain through SMA, its surface texture is similar to that of open-graded friction course (OGFC). Therefore, SMA surface has high frictional resistance, which provides improved safety to motoring public when traveling on wet pavements. CDOT, E470 and the NW Parkway each use SMA for surfacing across their urban corridors. Local Agencies have also been successfully placing SMA on arterial roads since 2002. The list of Front Range municipalities that have used SMA continues to grow. The list now includes Aurora, Denver, Lakewood, Commerce City and most recently Westminster, Parker, Jefferson County and Castle Rock. SMA does have a higher price per ton verses traditional dense graded asphalt, however, local agencies are seeing a significant return on their investment through increased performance life. The City of Aurora has been using SMA along their major arterial roads since 2002 and has placed almost 700,000 tons to date. All of Aurora’s projects have utilized the mill and fill process, varying from 2-inch to 3.5-inch in depth. “Aurora has seen and documented a 60% extended life of our pavements wearing course utilizing this technology and our plan is to continue the use of SMA on the Aurora arterial network (Aurora Streets Division).” Frank Castillo CAPA: Tell us about this project on Loop Road for the Town of Castle Rock. FC: “Loop Road is one of our major arterials. This is a very busy street for our residents and ongoing commercial projects. We choose to place a ¾” SMA material because of its rut resistance and structural performance. We’re really looking forward to this, it looks great going down, I’m very pleased with the product and can’t wait to see how it performs.” CAPA: What are your plans for future use of SMA? FC: “We think it’s a great product. We’ll monitor it to see how it wears and probably use it again in the future.” CAPA: We’re seeing more and more local agencies along the Front Range using SMA and implementing it into their Street Improvement and Capitol Project Programs. What is your guidance to others who have never tried it? FC: “It’s been a great choice for the Town as a surface lift for this higher volume road. It’s a great strategy to use when needed. We are planning to submit this project for a ‘Best in Colorado’ award this year…and hopefully win!”

6 /The Road Ahead WWW.CO-ASPHALT.COM Project Completed in Record 10 Day Round the Clock Construction Durango – La Plata County Airport Runway Rehabilitation During a 10-day complete shutdown of the Durango - La Plata County Airport (DRO) in Durango, Colorado, Four Corners Materials teamed with sister CRH companies, United Companies and APC Southern, to complete a $12.7 Million re-surfacing project of the runway and adjacent taxi connectors. From midnight on the 6th of September to midnight of September 16th , approximately 150 people comprised of CRH Oldcastle SW Group employees, electrical, striping, survey, milling, and trucking sub-contractors, worked 24 hours a day to complete a 3” mill and re-surface of a 150- foot wide by 9200-foot- long runway and 7 taxi connectors, including crack filling, electrical work and temporary striping. Durango-La Plata County Airport typically sees a steady flow of airplanes coming and going during daytime operations, including private planes and commercial jets. But as of late, all the activity has stayed on the ground, where a small army of road crews worked around the clock to repave the 1.75-mile runway. On Thursday September 7, an asphalt milling machine moved slowly along the length of the runway, which is 150-feet wide, removing old asphalt while about 40 trucks hauled it away.

Fall 2022 7 WWW.CO-ASPHALT.COM DRO has paused all flights during construction, including cargo, aerial firefighting, emergency medical and military flights. Director of Aviation Tony Vicari said airport runway maintenance generally happens once every 10 years. The total milled surface area was approximately 182,000 square yards. Western Milling of Grand Junction performed the milling using two milling machines and three crews. A total station survey guided system was used for precision milling to ensure a 3” asphalt surface course. Two paving crews from Four Corners Materials and APC Southern Construction Company paved 24 hours per day for 5 days to complete the runway portion of the project. The crews worked in succession of each other, each pulling one 15’ wide by 9200 feet long pass per shift. Approximately 5600 tons per day were placed between the two crews for a total of 28,000 tons in five days. After completion of the runway, the two crews worked in unison to complete the 7 connectors in a 3- day period. Survey personnel from United Companies provided GPS mm paver support to ensure the proper thickness and grade. A 300 ton per hour mobile asphalt plant was erected on-site. The plant ran 24 hours per day for the 5 days of runway paving. HF Sinclair provided 10 loads per day for 5 days of 70-28+ asphalt cement to keep up with the demand. The project also included mill and paving of a portion of the Commercial Apron which was also completed during the 10- day shutdown using a third paving crew. A complete re-construct of two portions of the main taxiway was also performed prior to and after the shutdown. A total of 38,000 tons of asphalt were placed on the project. This project took months of pre-planning to coordinate all the necessary crews and sub-contractors. Three milling crews, three mill support crews, three crack seal crews, three paving crews, two joint trim crews, two asphalt plant crews, four survey crews, two QC crews, 40+ trucks and drivers, electrical crews and striping crews. The project Engineer and QA were well staffed to keep up with the demand of the project. Key members of the team included: • Durango Airport Management • Dibble Engineering • SEH Inc. • Terracon • Four Corners Materials • APC Southern • United Companies Special thanks to Paul Appel, Jim MacDonald and their teams as well as Tyler Brown, Staff Writer, and Jerry McBride of the Durango Herald for the information contained in this article. "This runway has not been significantly rehabbed in over 15 years:' he said Thursday. "The asphalt sections on runways are heavily engineered to be able to withstand a lot of landed weight” The only potential for delay in the project would be if weather forces a work stoppage or if there is an equipment malfunction. DRO and Four Corners Materials have also built redundancy into the project, including an on-site asphalt plant so potential obstacles that emerge do not jeopardize the timeline. “Very fun to work on an impactful project and have a really good team between airport staff, our contractor and then our primary engineering group,”; said Airport Director of Aviation Tony Vicari. Airport Director of Aviation Tony Vicari

Fall 2022 9 WWW.CO-ASPHALT.COM ASPHALT & THE ENVIRONMENT Environmental Product Declarations (EPDs) What are Environmental Product Declarations? An Environmental Product Declaration (EPD) is a Type III Environmental Label as defined in ISO Standard 14025:2006, Environmental Labels and Declarations. EPDs communicate the environmental impacts of a product or service using Life Cycle Assessment (LCA). The process used to develop an EPD ensures consistent data collection, analysis and reporting requirements, supported by third party verification. This ensures the reliability of the information communicated through an EPD. EPDs report the CO2 Equivalent (kg) generated by producing 1 ton of asphalt impacting Global Warming Potential (GWP). Environmental Product Declarations in Colorado? Colorado passed House Bill 21-1303 Global Warming Potential for Public Project Materials and the Governor signed it into law earlier this year. CDOT (for transportation projects) and the Office of the State Architect (for building projects) will be establishing policy to develop Environmental Product Declarations for a number of construction products including asphalt and asphalt mixtures for. They will have a 2-3 year study and developmental period and then required starting in January, 2024 (OSA) and January 2025 (CDOT). CDOT categories include Bid Items 403 (Hot Mix Asphalt / Stone Matrix Asphalt) and Item 411 (paid separately, it shall be in the 403 EPD submittal). EPD submittal requirements shall be required for those projects that include the Standard Special Provision – Revision of Sections 101 and 106 – Materials Environmental Product Declarations. A project cost limit threshold of $3 Million, based on the Engineer's Estimate of bid items/quantities for which the Contractor submits a bid. The $3 Million threshold limit is not to include Construction Engineering (CE) and Indirect Costs, nor is it to include Force Account (FA) items. The $3 Million project threshold will be used for the initial EPD collection effort and may be revised in the future to include projects with a smaller engineer estimate bid item total. How do I create an Environmental Product Declaration? The National Asphalt Pavement Association has created the Emerald Eco-Label Tool (web-based software) to provide comprehensive, credible, and comparable environmental data to end users (engineers, specifiers, users, and producers) that can be used in future pavement EPDs. Emerald Eco-label program standardizes industry specific LCA assumptions, allowing for credible and transparent reporting. The Colorado Asphalt Pavement Association has also created an EPD workgroup to provide support and resources to the Industry. Contact Mike Skinner (, CAPA’s Director of Engineering for more information.

800-646-6636 @honnenequipment WELL-EQUIPPED FOR YOUR ROAD BUILDING SUCCESS MILLING MACHINES DESIGNED FOR TOP PERFORMANCE The demands on our roads are constantly on the rise. Wirtgen’s innovative and modern milling technology plays an important part in ensuring cost-e cient rehabilitation of roads without burdening the environment. TOP-CLASS PAVERS: FOR ALL APPLICATIONS O ering ve paver classes from mini to highway class maximizes clarity, giving you the assurance you need to perfectly meet all challenges in road construction with the optimum paver. ECONOMICAL AND EFFECTIVE COMPACTORS The compactor’s job is to produce a high-load bearing capacity. Hamm compactors achieve this through maximum productivity and quality, combined with low consumption and comfortable operation. MACHINE INSPECTION & REBUILD PROGRAM Now is the perfect opportunity to get your Wirtgen Group equipment ready for the upcoming season and help prevent downtime. 10%OFF PARTS ORDERS* DURING AN INSPECTION *10% o parts orders valid only for qualifying inspections. Hamm products require a minimum spend of $1,500 in parts and Wirtgen, Vogele, and Kleemann products require a minimum spend of $15,000 in parts to qualify. The program runs October 1, 2022 through February 28, 2023. 10 /The Road Ahead

Fall 2022 11 WWW.CO-ASPHALT.COM CAPA Welcomes 15 New Members in 2022!

12 /The Road Ahead WWW.CO-ASPHALT.COM LabCAT – Celebrating 25 Years of Asphalt Certification 2022 marked the 25th Year of operation for the Laboratory for Certified Asphalt Technicians (LabCAT) and an anniversary celebration was held on July 22. It was great to see many friends and those who have had a role in the success of the program. LabCAT is truly a program to celebrate, and we are so very proud of our partnership with CDOT and all the people involved including Program Manager/Instructor Tom Clayton, Instructor Cindy Rutkoski, Training Coordinator Diane Hammond, and all the proctors, committee members, etc. Consider the following: • CAPA is one of only three asphalt industry trade organizations that administer the state required certification program (Texas and Oregon being the others). • We have surpassed the 5,000 certified technician and over 600 technicians and inspectors will be certified in 2022. • Over 95% of the attendees evaluate the benefit of the certification and the quality of the program as either Good or Excellent. • We are completing our 5th 5-year agreement with CDOT and the partnership has expanded to include ACEC, CAGE, FHWA, CARSE, CSU Construction Management, APWA Colorado chapter and others as stakeholders. Here’s to another 25 years of advancing the use and quality of asphalt pavements through a high-quality technician and inspector certification program - LabCAT!

Fall 2022 13 WWW.CO-ASPHALT.COM January 10, 2023 – Asphalt Industry Outlook, Market Analysis, & Forecast: Tom Peterson, Mike Skinner, CAPA January 26, 2023 – The Use and Success of Asphalt Perpetual Pavements: Dave Gent, Executive Director, Washington Asphalt Pavement Association February 23, 2023 – The Use of Stone Matrix Asphalt (SMA) for City/County Streets and Roads: Mike Skinner and Tom Clayton March 16, 2023 – Warm Mix Asphalt/Workability Mix Additive – Update on Use and Acceptance: Matt Elam, Jeff Weitzel, Tyler Francis April 13, 2023 – Understanding Asphalt Pavement Construction and Getting Density May 11, 2023 – The Fundamentals of Proper Asphalt Sampling and Testing June 8, 2023 – Environmental Product Declarations (EPD) – Use and Implementation: Mike Skinner, Dylan Hullinger, Joseph Shacat July 20, 2023 – Understanding Mat Defects: Todd Mansell, Caterpillar Equipment August 3, 2023 – Best Practices & New Developments in Asphalt Specifications: Tom Clayton & Mike Skinner September 28, 2023 – Associate & Affiliate Member – Product & Service Spotlight October 5, 2023 – Parking Lot Design & Construction: Mike Skinner, CAPA October 26, 2023 – Breathing Easy with Asphalt Production Facilities: Theresa Lopez, Tetra Tech Register today at *schedule is tentative and subject to change with additional sessions 2023 RMAEC Webinar Schedule*

14 /The Road Ahead WWW.CO-ASPHALT.COM ASPHALT AROUND THE STATE INDUSTRY NEWS In late August, Mike Skinner, CAPA's Director of Engineering, spent two weeks driving almost 3,000 miles around the western half of Colorado, from Walden to Cortez and Rangely to Alamosa (and almost everywhere in between) visiting western slope CDOT paving projects. My first observation from my travels…we are all lucky to live in such a beautiful state. Colorado is truly impressive with our high deserts, rolling grasslands, red rock canyons and Rocky Mountains. Out of state tourists spend thousands of dollars to vacation here to experience what we have right in our own backyard, so take advantage of what we have. My second observation…Colorado’s asphalt paving industry’s commitment and dedication to quality construction is impressive. I visited projects at airports and State Highways, back country county roads for surface mining and Colorado Scenic Byways and they all had a common theme…commitment to quality. Driving the state highways across CDOT Region 5 (Southwest Colorado) you’re reminded how smooth and quiet the roads are, that’s no coincidence. Region 5 is a perennial winner for CDOT’s smoothness award and our Industry contractors that pave in Region 5 are proud of that. However, each year CDOT has several remote paving projects across the state that pose their own set of challenges for project delivery. The Asphalt Paving Industry of Colorado has approximately 65 asphalt material facilities in 42 counites, plus an additional 5 to 7 portable plants to mobilize for remote projects. It’s those portable plants and associated operations that our industry mobilizes for remote rural work that pose additional challenges verses typical paving in urban corridors, including; Quality in Asphalt Construction - Remote Paving Around Colorado “Remote paving projects have their own unique challenges…paving impacts become even more exaggerated due to the remoteness and distances typically associated with these types of projects. One example is the impact of weather. Earlier this season we had significant wet weather which delayed our project for a time. Unfortunately, we couldn’t send the crew to work on another project during the delay because we were so far out, so we just had to wait it out and potentially impact our final completion date.” Kyle Rademacher SIMON Project Manager Liam Fuqua, SIMON

Fall 2022 15 WWW.CO-ASPHALT.COM INDUSTRY NEWS • Supply Chain Logistics In the last few years, all paving projects have been impacted by supply chain issues, but remote projects even more. For example, reduced volume of available trucking for transport of aggregates, liquid asphalt and plant mixed asphalt will all impacts daily production totals further impacting the overall project schedule. • Workforce Remote projects typically require paving crews to mobilize to the project and live on-site during the duration or work in desolate and isolated areas. Developing, training and retaining a quality crew is difficult…maintaining a remote paving crew is even more so. • Scope Change Remote projects are inherently located in parts of the state that do not receive much traffic and are generally difficult to reach. It is also common for these rural roads to be under designed and have aged well past their service life. Its not uncommon once a paving crew arrives on site to discover conditions that were not incorporated into the rehabilitation plans and contract, hence requiring contract modifications impacting project delivery. Successful paving of remote projects doesn’t happen by accident, proper planning and efficient execution are key to long-lasting roadways. Most people who work on a road crew know that there's a lot more to building a long-lasting, quality roadway than just putting some hot rocks on the ground and compacting them. Time and energy in project planning, mix design and machine maintenance are all spent in order to achieve the desirable end result: a smooth pavement that will stand up to the test of time and the view of the traveling public.