What are the opening hours?

Monday 9am - 5pm Tuesday 9am - 5pm Wednesday 9am - 5pm Thursday 9am - 5pm Friday 9am - 5pm

Apex Companies, LLC

Name: Apex Companies, LLC
Address: 2101 Gaither Road, Suite 500, Rockville, MD, 20850, US
Telephone: (410) 294-9631

Home
United States
Rockville, MD
Apex Companies, LLC

Call Directions Website Contact the business

Award-Winning Engineering and Environmental Solutions For more information, visit www.apexcos.com.

Established in 1988, Apex is a national multidisciplinary consulting and engineering services firm with a robust portfolio of capabilities in water; environment; environmental, social, and governance (ESG) and resiliency; health and safety; compliance and assurance; and infrastructure. Rated #13 as an ENR All-Environmental firm and #68 in the top 200 overall, we are known for our technical expertise, rapid response, operational integrity, and exceptional client satisfaction. We operate in all 50 states and maintain a highly capable and diverse team of scientists, geologists, engineers, technicians, and information management specialists.

10/28/2026

Effective stormwater management goes beyond installation. Long-term performance depends on ongoing inspection, maintenance, and an approach that adapts to changing site conditions.

Since 2018, Apex has partnered with the Port of San Diego to provide inspection, cleaning, maintenance, and repair of hundreds of post-construction structural best management practices (BMPs) across its San Diego-area facilities.

Working closely with the Port, our team helped shift the maintenance process from fixed schedules to a flexible, needs-based approach. This approach allows for more frequent inspections, directs maintenance where it’s needed most, and helps keep BMPs functioning effectively, all without requiring additional budget.

As we close out CASQA 2026, we’re highlighting projects that demonstrate practical, cost-effective approaches to long-term stormwater management.

Thank you to everyone who connected with our team at CASQA. We look forward to continuing the conversations around practical solutions to today’s stormwater management challenges.

10/27/2026

Our team is currently attending CASQA 2026, connecting with industry professionals and sharing how Apex supports effective stormwater management and environmental compliance.

As part of this year’s conference, we’re highlighting projects that demonstrate our team’s experience delivering stormwater management and water quality solutions, including our work on the Caltrans 03-1H9904 Interstate 80 Truck Climbing Lane project in Kingvale, California.

Working alongside Teichert, our team provided stormwater planning, water quality monitoring, and environmental compliance support from 2024 to 2026.

Our services included developing Stormwater Pollution Prevention Plans (SWPPP), temporary creek diversion, dewatering, and winterization plans, as well as conducting Section 401 water quality monitoring, dewatering monitoring during culvert rehabilitation, and field Qualified Stormwater Developer (QSD) and Qualified SWPPP Practitioner (QSP) inspections.

Attending CASQA 2026? Visit our team at Booth 508 to learn more about Apex’s stormwater management capabilities and connect with our professionals.

10/26/2026

As we prepare for CASQA 2026, we’re highlighting projects that demonstrate how our teams are addressing stormwater and water resource challenges across California.

CWE, an Apex Company, is supporting the City of Citrus Heights as it addresses scour and erosion concerns at four locations along Arcade Creek.

The project brings together technical expertise in topographic surveying, geotechnical and hydraulic analysis, environmental coordination and permitting, and engineering design. From evaluating site conditions and navigating regulatory requirements to developing construction documents and providing construction support, the team is helping develop solutions that protect and stabilize these critical creek areas.

Attending CASQA 2026? Visit Apex at Booth #508 to connect with our team and learn more about how we’re helping communities address stormwater challenges through practical, integrated solutions.

10/23/2026

Apex Companies has been recognized among Engineering News-Record’s (ENR) Top 200 Environmental Firms, ranking No. 55.

The ranking reflects the continued growth of our environmental services and the expertise of our teams nationwide. Every day, our professionals help clients navigate complex environmental challenges and deliver practical solutions that create lasting value.

"Apex is on the move. Reaching #55 on ENR’s Top 200 Environmental Firms reflects the talent of our people, the trust of our clients, and the momentum we’re building across the business. We are delivering.”

— Shawn Doherty, Chief Executive Officer, Apex Companies

We’re proud of the professionals behind this achievement and grateful to the clients who trust us with their most important projects.

10/07/2026

We’re continuing our countdown to NAEM FORUM26 in Minneapolis, Minnesota.

Gregg Demers and August Martin will be on-site connecting with EHS and sustainability leaders and sharing insights from their work helping organizations manage compliance, improve efficiency, and reduce risk.

During the Power Hour, stop by Booth 413 to hear Gregg and August discuss, “How to Increase Compliance Efficiency and Reduce Risk Across Site Portfolios,” where they’ll share practical perspectives on addressing the challenges of managing EHS compliance across multiple sites.

If you’re attending FORUM26, we hope you’ll stop by, join the conversation, and connect with Gregg and August.

09/30/2026

Many sites. Evolving requirements. More complexity. How can EHS teams keep pace while improving efficiency and reducing risk?

That’s one of the conversations we’re bringing to NAEM FORUM26, where Apex is proud to once again sponsor and exhibit.

Connect with our EHS and sustainability team at Booth 413, and don’t miss Gregg Demers and August Martin during their Power Hour, “How to Increase Compliance Efficiency and Reduce Risk Across Site Portfolios”.

We’re looking forward to exchanging ideas, sharing practical approaches, and connecting with fellow EHS and sustainability leaders at FORUM26.
https://hubs.ly/Q04yJGCX0

09/24/2026

Congratulations to Apex’s Diane Anderson, Executive Director of the Project Management Office, on being named one of Future of Field Service’s Stand Out 50 Leaders for 2026!

This recognition honors leaders making a meaningful impact through innovation, authentic leadership, and service excellence. Diane embodies these qualities, and we’re thrilled to see her contributions recognized alongside so many other inspiring leaders.

Congratulations to Diane and all of this year’s Stand Out 50 honorees!

09/01/2026

Please join us in welcoming Janel O'Connor, SPHR, SHRM-SCP, to Apex as our new Chief People Officer (CPO).

Janel brings more than 20 years of experience leading people strategy, organizational development, talent management, and culture initiatives for growing professional services organizations. Throughout her career, she has helped organizations attract and develop talent, strengthen employee engagement, support leadership development, and successfully navigate periods of growth and change.

As Apex continues to grow, Janel's expertise and people-centered leadership will help strengthen our organization and foster a culture where employees can build long, rewarding careers.

We're excited to have Janel on board and look forward to the impact she'll make across Apex.

08/28/2026

For more than 8 years, Apex has worked alongside the communities of Braintree, Holbrook, and Randolph, Massachusetts, supporting their water supply needs through planning, design, and construction.

That partnership helped bring a new Regional Water Treatment Plant into operation, serving all three communities and replacing aging treatment facilities in Braintree and Randolph.

Apex has helped guide the project from early planning and design through permitting, procurement, and construction. Along the way, our team supported PFAS testing as regulations evolved, coordinated public outreach and permitting, reviewed designs, and provided construction administration and resident engineering services.

As Water Quality Month comes to a close, we’re proud to recognize the work that goes into something many of us rely on every day: clean, reliable drinking water.

08/11/2026

We’re proud to share that Apex has received a 2026 Excellence in Environmental Engineering and Science Honor Award in the Small Projects category from the American Academy of Environmental Engineers and Scientists (AAEES) for the Mighty Argo Cable Car Upper Landing Wastewater Reclamation Facility in Idaho Springs, Colorado.

This innovative project supports the Mighty Argo Cable Car destination more than 1,300 feet above Idaho Springs, where traditional wastewater infrastructure simply wasn’t an option. This compact containerized treatment system delivers reliable wastewater reclamation and water reuse in a challenging remote mountain environment while minimizing its environmental footprint.

Congratulations to Adam Sommers, PE and the entire project team whose creativity, technical expertise, and collaboration made this award-winning solution possible. This recognition reflects the team’s commitment to delivering practical, sustainable engineering solutions, even in the most demanding locations.

American Academy of Environmental Engineers and Scientists

Address

2101 Gaither Road, Suite 500
Rockville, MD
20850

Opening Hours

Monday	9am - 5pm
Tuesday	9am - 5pm
Wednesday	9am - 5pm
Thursday	9am - 5pm
Friday	9am - 5pm

Telephone

(410) 294-9631

Website

http://www.apexcos.com/

Alerts

Be the first to know and let us send you an email when Apex Companies, LLC posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.