Civil Engineering

Bill Swain, P.E., PLS
Senior VP, Civil Engineering

Phone: 405.701.8124

Mr. Swain is a registered Professional Engineer and Land Surveyor with over 30 years of experience on a wide variety of civil engineering projects. His project experience includes utility system design, stormwater/drainage design, water/wastewater treatment system design, roadway design, reservoir design, subdivision layout and platting, permitting and master planning. He has a Master of Science in Civil Engineering and a Bachelor of Science in Chemical Engineering both from the University of Oklahoma.

Corey Lipps, P.E.
Project Engineer

Phone: 405.905.9363

Mr. Lipps has a diverse body of commercial land development experience from preliminary planning and site selection to design, permitting, construction, and occupancy. He has completed due diligence on the entitlement and construction requirements of many communities, and has advised clients on the approval and permit process required to develop their projects. In addition, he has a history in residential land development, public roadway projects, minor water and wastewater treatment plant design, water distribution systems, wastewater collection systems, storm water modeling, detention pond design, storm water pollution prevention plans, and environmental inspections, permitting and modeling. He has a Bachelor of Science in Chemical Engineering.

Rick Schlegel, P.E.
Senior Engineer/
Manager - Woodward Branch

Phone: 580.254.3514

Rick Schlegel has over 36 years of engineering design and construction experience in all types of Municipal, Industrial, Rural, and Private Infrastructure Projects. Rick was the former State Engineer for the USDA-Rural Development (18 Years), selected as the National Rural Development Engineer of the Year, and was selected as one of the “Top Ten” Federal engineers in the country by the National Society of Professional Engineers when he was with USDA. Rick has design and construction contract management experience in many areas including water supply treatment, distribution and transmission, groundwater investigation, water well design, sanitary sewer collection and treatment systems, wastewater management, environmental assessments, site planning, paving, streets, sidewalks, bridges, culverts, dams and reservoirs, grade stabilization structures, animal waste systems, and many small and innovative technologies for small communities. Rick is currently the city engineer for over 30 communities in Northwest Oklahoma. 

Mareta Woodard
Grants and Projects Administrator

Phone: 580.747.0238

Ms. Woodard brings over 20 years of experience of grant expertise to the Enviro Clean team. Serving as the Grants and Projects Administrator, Woodard provides support and assistance in both seeking funding and handling the financing processes for our clients. Woodard is knowledgeable in exploring available assistance through grants and loan opportunities among all governmental levels and units. She also has experience in the application and administration of the CDBG Program including the Water-Wastewater Construction program. Woodard’s deep understanding of the preparation and submission process for grant and loan applications through the Oklahoma Water Resources Board, the Economic Development Administration, REAP and other related grants at the State and Federal level make her a vital part of our team.

As public entities and private developers look for ways to stretch their funding to cover infrastructure and development projects, we are applying extensive project experience and pioneering the use of new technology, gaining efficiencies to enable projects to go forward. 

Through our Cardinal Engineering division, we offer a multi-disciplined staff of engineers, designers, and technology experts working in concert to support our public and private sector clients from project feasibility through construction.  Working hand-in-hand with client project managers and architects, we provide a full suite of civil engineering and construction project management services which ensures project delivery, on time and within budget.


We also specialize in supporting smaller, rural municipalities that lack the resources to maintain a full-time engineering department or City Engineer.  Not only do we provide municipal engineering support to these communities, we proactively engage with them to determine priority projects and assist them with securing the funding for their projects through state and federal grant programs. 


In the past two and half years, we have delivered over 75 funded projects through our community grant assistance program addressing transportation, municipal water supply, surface water management, aviation, and other municipal infrastructure projects.

Core Services
  • Utility Design

  • Water Supply & Distribution​

  • Wastewater Collection & Treatment

  • Storm/Drainage System Design

  • Construction Administration

  • Bid and Construction

  • Geotechnical Coordination

  • Master Planning

  • Platting

  • Roadway Design

  • Site Feasibility Analysis

  • Stream Hydraulic & Hydrologic Studies

  • Sustainable Site Design

  • SWPPP and Erosion Control

Central Moore Park
Moore, Ok


Cardinal Engineering provided civil design services to the design team responsible for the plans for a new park in Moore, Oklahoma. The community park stretches 6 blocks along Broadway Street and consumes 80-acres of fields. The scope of the project included construction of a 60,000 square foot community center, an aquatic park, amphitheater, farmer’s market, and a 2-mile walking trail. Scope of services for the park included site planning, grading and drainage, paving design, sanitary sewer design, water distribution system design, storm sewer design, as well as the design and documentation of large storm water retention features required to support the site program. The 26 million dollar park was voted on in 2012 and was built with Bonds funds.



Concept Development Support

Water Line Design

Demolition Plan

Storm Sewer Design

Preliminary and Final Stormwater Design

Project Management and Administration

Civil Site Planning

Grading/Drainage Plan

Sanitary Sewer Design

Construction Specifications

Construction Administration

Have a project? Contact us

One of our principals will be happy to discuss your needs.