Headquarters:
100 Commerce Valley Drive, West Markham, ON L3T 0A1
Year founded:
2016
Number of employees:
5,186
Phone:
416 633 9670
Email:
info@gipi.com
Website:
gipi.com
LinkedIn:
linkedin.com/company/green-infrastructure-partners
Green Infrastructure Partners
John Pontarollo
Chief Operating Officer
Gerald Quinlan
Executive Vice President, Construction Materials
Nathan Corriveau
Executive Vice President, Specialty Infrastructure Solutions
Leadership
John Pontarello is chief operating officer at GIP, one of Canada’s largest and most diversified infrastructure companies. He is well-known in the road construction industry for bringing deep operational knowledge through his 30 years of experience in increasingly senior roles at Ash Grove Cement, CRH Canada, and Dufferin Construction.
Pontarello is responsible for ensuring GIP’s continued focus on maximizing the value of the knowledge of GIP’s best-in-class employees, its strong market presence as a leading service provider to both government and retail customers across Canada, as well as an exceptional asset base. He is a strong advocate of sustainable construction and helps to steer the industry to adopt more sustainable construction practices.
Pontarello actively fosters the triple bottom line principles – value creation, sustainable environmental performance, and social responsibility – to ensure a balance between stable economic growth, continual social progress, and environmental preservation.
Chief Operating Officer
John Pontarollo
Gerald Quinlan is a seasoned construction professional with almost 30 years of experience in the industry. He oversees the management and operations of GIP’s Construction Materials Division, including over 25 pits and quarries and 40 asphalt plants, ensuring the efficient production and distribution of high-quality materials.
A strategic leader, Quinlan is responsible for streamlining operations while maintaining environmental and safety compliance. His expertise in site development, logistics, and regulatory oversight has been instrumental in driving sustainable growth and operational excellence.
Executive Vice President, Construction Materials
Gerald Quinlan
Leading the Specialty Infrastructure Solutions Group at GIP, Nathan Corriveau manages one of Canada's biggest self-performing geotechnical construction firms. Beyond performing his executive duties, he is a champion for safety, and his “field-first” approach shapes how things are done across the group.
With over 20 years in Ontario construction, working his way up from the site level, he has built a deep belief in putting safety and environmental care first. This isn't just something he says, it's a core principle that you see in how the Specialty Group operates, and it makes a real difference in creating a safer place for everyone to work.
Executive Vice President, Specialty Infrastructure Solutions
Nathan Corriveau
David Colle
Executive Vice President, Integrated Infrastructure Solutions
David Colle is a seasoned construction executive with over 20 years' experience in the heavy civil construction industry and has extensive experience with complex, large-scale projects, including critical provincial transportation infrastructure. He is executive vice president of Integrated Infrastructure Solutions at Green Infrastructure Partners, one of Canada’s largest and most diversified infrastructure firms, overseeing 3,500+ employees and $1.3 billion in annual revenue. A dedicated industry volunteer, he has served as president and director on several Windsor-area and Ontario boards. He holds Gold Seal certification in project management.
Executive Vice President, Integrated Infrastructure Solutions
David Colle
Mauro Scanga
Executive Vice President, Fleet, Safety and Procurement
Mauro Scanga is the executive vice president of safety, procurement and fleet, leading strategic sourcing initiatives and process improvement efficiencies. He has over 30 years of industry experience in operations, governance, financial management, and risk mitigation.
Scanga holds MBAs from Cornell University and Queen’s University, a BASc in civil engineering from the University of Toronto, and is a licensed Professional Engineer. Prior to GIP, he held roles at GFL as an area VP and at Deep Foundations Contractors, where he served as president and director.
At GIP, Scanga focuses on helping drive strategic initiatives and support long-term growth.
Executive Vice President, Fleet, Safety and Procurement
Mauro Scanga
Green Infrastructure Partners (GIP) is one of Canada’s largest and most diversified infrastructure companies. It derisks the most challenging parts of construction by offering vertically integrated infrastructure solutions for public and private projects of every scale.
For over 100 years, GIP has been designing, delivering, and maintaining critical infrastructure for communities across Canada. From demolition, shoring and foundations, excavation and remediation, structural steel and structures, paving and the production of materials, GIP is a vertically integrated organization with the unique ability to self-perform all project scopes without reliance on subcontractors.
The word “green” in GIP’s name signifies the firm's belief in the necessity of sustainable solutions. GIP leads in energy efficiency and is at the forefront of incorporating recycled and reused materials.
With its sights set on building a better tomorrow, GIP is committed to long-term relationships and long-term thinking. The firm strives to achieve the highest standards of health and safety when executing projects that provide the greatest benefits to its customers, with the least disruption to its communities. GIP’s work shapes the future of its cities and is paving a new path for the industry’s future.
“Expectations are high, as is support. There is a shared understanding that we are building something meant to last, both for clients and within the firm”
Jared Chase, Team Holmes – Signature Estate & Investment Advisors, LLC
Jennifer Howatt
Director of Employee Services
Carmin Mazzotta
Director of Community and Culture
Ken Uzeloc
Protective Services Director and Fire Chief
Simon Williams
Chief Strategy & Distribution Officer, Arch Insurance International
and Active Underwriter, Syndicate 1955
Jennifer Howatt (she/her) is a senior HR executive with 24 years of experience in HR management, including 23 years of dedicated service to the City of Kamloops. Appointed director of employee services in 2025, she leads a department of 28 professionals across HR, safety, and payroll, ensuring the effective delivery of comprehensive internal people services.
Howatt holds a Bachelor of Business Administration with a specialization in HR from Thompson Rivers University and maintains her Chartered Professional in Human Resources (CPHR) designation. She is committed to fostering organizational well-being and advancing a strong, proactive safety culture that supports every employee’s health and safe return home each day.
Director of Employee Services
Jennifer Howatt
Carmin Mazzotta is director of community and culture for the City of Kamloops. In this role, he leads the City’s recreation, arts and culture, events, and social and community development teams. Under his leadership, the recreation team has operationalized new community facilities including a mini rink, a senior’s centre, and an outdoor skating loop.
Mazzotta’s events team oversees the Tournament Capital Program, which generated a $17 million economic impact in 2025 and oversaw the addition of a successful new Christmas market. He also plays a key role in securing and integrating provincial investments in social housing and related services.
Director of Community and Culture
Carmin Mazzotta
Ken Uzeloc is the City of Kamloops’ protective services director and fire chief, bringing more than 30 years of experience in emergency response, municipal enforcement, and executive leadership. He joined the City in 2022 and was appointed director in October 2023, overseeing approximately 400 employees.
Uzeloc contributes nationally through his work with several fire service associations and the Board of Directors for the Canadian Association of Fire Chiefs. He is guided by the principle, “Safety is at the root of everything we do… Without a culture of safety, everything that matters is at risk.”
Protective Services Director and Fire Chief
Ken Uzeloc
Kimi leads the Estate Planning and Wealth Protection team and is a member of the Society of Trust and Estate Practitioners. She understands the complex and delicate nature of family estate planning, the technical requirements around probate and estate administration, and the importance of preserving wealth for future generations. Her advice is accurate, commercial, strategic and tailored to each situation.
Partner
Kimi Shah
maintaining an in-house team of more than 20 programmers to facilitate fast improvements
direct bill options to streamline the payment process for the agent and the insured
providing IVANS policy downloads that enable up to 30 percent labor savings to independent agencies
delivering online capabilities including rating, policy documents, payments, and claims reporting
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InvestmentNews’ 2026 5-Star Wealth Management Teams award was awarded in May 2026 and recognized US-based firms for client growth and retention over the preceding 12 months. A total of 772 firms were nominated, and 97 were recognized following the IN editorial team’s qualitative and quantitative review. No fees were paid for consideration or receipt, and clients were not involved in the process. Some recipients, including the advisor, paid post-award fees for optional promotional materials, which did not influence the award process. Third-party rankings and recognitions serve as benchmarks but do not guarantee future investment success or represent individual client evaluations. For details on the professional designations displayed herein, including descriptions, minimum requirements, and ongoing education requirements, as well as full details on third-party rankings, awards, and accolades, please visit the similarly named section at seia.com/disclosures. Alternative investments may not be suitable for all investors. Signature Estate & Investment Advisors, LLC (SEIA) is an SEC-registered investment adviser; however, such registration does not imply a certain level of skill or training, and no inference to the contrary should be made. Securities offered through Signature Estate Securities, LLC, member FINRA/SIPC. Investment advisory services offered through SEIA, 2121 Avenue of the Stars, Suite 1600, Los Angeles, CA 90067, (310) 712-2323.
Many new clients arrive through referrals – from existing clients and professional partners – reflecting relationships built over time.
Perhaps the most telling aspect of SEIA’s recognition is what it says about the firm’s approach to client relationships at their most human moments. When markets grow turbulent and anxiety rises, the firm’s advisors are trained not simply to reassure but to slow decisions down, provide context, and gently reinforce the long-term plans when they are needed most.
In an era when wealth management is under pressure to automate, commoditize, and digitize, SEIA’s positioning within the wealth management landscape rests on something more analog: the steady presence of people who know their clients well, show up consistently, and take the responsibility of guiding others seriously.
Jared Chase adds, “Expectations are high, as is support. There is a shared understanding that we are building something meant to last, both for clients and within the firm.”
The firm’s investment approach, while secondary to its broader wealth management mandate, remains a key component of its process. In the past year across 2025, SEIA deployed structured notes; employed concentrated stock solutions, including long-short strategies and option collars; and leaned into conviction-driven individual stock selection through its internal investment management team – a combination utilized by the firm during a volatile market environment.
What further distinguishes SEIA from many of its peers is not only a structural choice but also a cultural one. A significant portion of the firm’s advisors began their careers at SEIA itself, advancing through a formal development track that emphasizes mentorship and shared responsibility. Long tenures are common, and turnover is relatively low.
Leadership at the firm has reinforced this culture through deliberate decision-making, consistently prioritizing infrastructure, governance, and people over rapid expansion. The result is an organization that has man aged to scale while maintaining a consistent, coherent client experience.
“We are not built around individual advisors; we are built around teams”
Brian Holmes, Team Holmes – Signature Estate & Investment Advisors, LLC
