Water & Wastewater

Vilano Pier Floating Dock

Vilano Beach Floating Pier Vilano Beach, Florida DCCM provided engineering design services for a 100-foot floating dock installed perpendicular to the Vilano Pier in St. Johns County, Florida, enhancing boater access to the Vilano Town Center. The project required careful evaluation of challenging site conditions, including heavy boat traffic, wind-driven wave action, and strong tidal currents. Our team conducted a comprehensive review of existing conditions and anticipated loading requirements to inform the development of performance-based design specifications for the floating dock system and associated gangways, ensuring long-term functionality and durability. In collaboration with subconsultants, DCCM supported the project through bathymetric surveying and water quality analysis to assess water circulation and flushing characteristics critical to the dock’s performance and environmental compliance. The team also coordinated permitting efforts with regulatory agencies, including the Florida Department of Environmental Protection (FDEP) and the U.S. Army Corps of Engineers (USACE). During construction, DCCM provided ongoing support through contractor submittal reviews and coordination, helping to ensure the project was delivered in accordance with design intent and regulatory requirements. At a Glance 100 Foot Floating Dock Markets Water Municipal Services Service

Inwood Forest Stormwater Detention Basin

Inwood Forest Stormwater Detention Basin Houston, Texas The project included the conversion of 226-acres of golf course fairways into regional detention basins through an interlocal agreement between Harris County Flood Control District and the City of Houston. This project represents the largest single-phase dirt moving effort in the Flood Control District’s 88-year history. It is transforming the site into 12 interconnected compartments, designed to mitigate impacts of future City of Houston local drainage improvements and help reduce flooding risks in a historically vulnerable part of the city. The project encompasses property located both east of Antoine and west of Antoine, with a total of 12 interconnected compartments. The project is currently in construction and will provide approximately 1200 acre-feet of storage to the White Oak Bayou Watershed. At a Glance 226 Acres $71 million Project Cost “This project represents a historic milestone for Harris County Flood Control District, both in scale and impact. Converting more than 226 acres into interconnected regional detention basins required close coordination between agencies, thoughtful phasing, and precise execution. Once completed, the system will significantly enhance flood resilience for the White Oak Bayou watershed and surrounding communities.” Mark Rotz, PE Project Manager Markets Land Development Services Land & Site Development

Vilano Beachfront Park 

Vilano Beachfront Park Vilano Beach, Florida DCCM provided comprehensive concept planning, master planning, engineering, and landscape architectural services for Vilano Beachfront Park on Vilano Road in St. Johns County, Florida. The project aimed to seamlessly integrate the preservation of the natural coastal environment with the historic character of the area, creating a unique space for civic engagement and social recreation.  Key features of Vilano Beachfront Park include a 1,300-square-foot pavilion that seats up to 190 people, designed to host concerts, educational events, and community gatherings. The pavilion incorporates rotating panels, which can be opened to provide ocean views or closed for events, and is equipped with performance lighting that is directed away from the Vilano Town Center, also considering turtle nesting season regulations.  Additional upgrades to Vilano Beachfront Park focus on enhancing accessibility and visitor experience. These include new changing stations, a recreational area featuring a climbing play structure, new outdoor showers, renovated restrooms, and improved parking with restriping for ADA compliance. A mobimat provides accessible beach entry along the northern boundary, while updated dune walkovers, including an ADA-compliant viewing turnaround, allow easy access for all. Vilano Beachfront Park provides the only disability-accessible beach in St. Johns County, with a wheelchair-accessible path to the sandy beach and a wooden ocean-viewing ramp. These enhancements ensure an inclusive coastal experience for all visitors.  At a Glance 1.7 Acres $109,000 Project Cost Inclusive Design Award, Florida Planning and Zoning Association Project Award Markets Land Development Buildings Water Services Land & Site Development Buildings & Places Program Management Water & Wastewater

Stillwater Residential Development

Stillwater Residential Development St. Johns, Florida DCCM provided professional engineering services for the Stillwater development, an age-restricted community featuring 550 single-family and multifamily duplex units, along with an 18-hole golf course and associated amenities, infrastructure, and roadway design. The development included an 18,828 SF clubhouse building, 2,109 SF aquatics building with a pool, a 600 SF driving range concession and restroom building with associated driving range bays, and a 9,098 SF maintenance facility. Additional recreational features encompassed a 2.5-acre driving range, two full-size tennis courts, two full-size pickleball courts, a bocce ball court, and special event lawn space.  Our team coordinated the design and permitting with St. Johns County, the Water Management Distrcit, JEA, Florida Department of Environmental Protection, and Army Corps of Engineers. DCCM was also responsible for certifications of the completed construction, which required routine site visits throughout construction, an as-built review, and a thorough assessment of all testing documents. The project included over 10,000 feet of 24-inch reclaimed water main, along with more than 10,000 feet of both water main and sanitary force main of various sizes less than 24″ in diameter to support the community’s infrastructure needs. The onsite utilities were also designed through detailed coordination with JEA staff to ultimately provide a looped connection between existing infrastructure within Veterans Parkway and CR 210.   At a Glance 784 Acres $932,000 Project Cost 2023 Development of the Year Honorable Mention by Golf Inc. Magazine Project Award Sports Illustrated Most Innovative Course Design for 2022 Project Award Markets Land Development Water Services Land & Site Development Water & Wastewater Utilities

St. Johns County Health & Human Services Center

St. Johns County Health & Human Services Center St. Augustine, Florida DCCM provided engineering services for the Health & Human Services facility located near the St. Johns County office complex. Completed in three phases, the project encompasses over 40,000 square feet of building footprint on a 16-acre site. Notably, the Center’s stormwater facility includes a wet detention pond paired with two bio-retention ponds, providing diversity of landscaping to the site. Project scope included complete civil site design, stormwater and utilities infrastructure design, and permitting with St. Johns County, City of St. Augustine, FDEP and SJRWMD.   Our team coordinated and managed all aspects of this project and worked closely with the building architect, St. Johns County Construction Services, and St. Johns County Survey Department. We coordinated with subconsultants to determine the wetland line and flood plain impact, and conduct geotechnical investigations. We also worked with the City of St. Augustine Public Works Department, as the City provided utility service to this site, and USACE to obtain permitting for this project. Our team helped the county prepare bid specifications, assisted with bid evaluation, subsequent contract administration and engineering construction inspection of the contractor.   This project serves as an example of DCCM’s experience in working with several entities to complete a large project on an accelerated schedule.  At a Glance 40,000 Square Feet $63,000 Project Cost Markets Water Land Development Services Water & Wastewater Land & Site Development Program Management Utilities

24-inch Putah South Canal Emergency Raw Water Repair

24-inch Putah South Canal Emergency Raw Water Repair Benicia, California DCCM provided construction management and full-time inspection services for the City of Benicia’s 24-inch Putah South Canal Emergency Raw Water Repair Project. The emergency repair addressed a critical raw water transmission line extending from private property near Watt Court, beneath Interstate 80, and into City of Fairfield property. Due to the pipeline’s importance and its location within a major transportation corridor, the project required accelerated construction, careful coordination, and strict traffic control and safety oversight. Construction activities included traffic control along the westbound shoulder of Interstate 80, excavation of entry and exit pits, slip lining of an 18-inch fusible PVC pipe, hydrostatic testing, and full site restoration. DCCM supported the City throughout all phases of construction, providing daily field inspection, documentation, safety compliance monitoring, and traffic control oversight to ensure work conformed to project plans, specifications, and regulatory requirements.  Construction management services included coordination with City staff, the contractor, property owners, and the design team; administration of submittals, RFIs, and change orders; cost and schedule monitoring; and preparation of progress reports and pay estimate recommendations. DCCM also supported project closeout by verifying punch list completion, reviewing record drawings, and delivering complete construction documentation. The project was successfully completed under emergency conditions while maintaining safety, quality, and schedule objectives.  At a Glance $97,000 Project Cost Markets Water Services Transportation Water & Wastewater

Butler Beach Drainage & Stormwater Master Plan

Butler Beach Drainage and Stormwater Master Plan St. Augustine, Florida DCCM was tasked by St. Johns County to analyze the Butler Beach region’s drainage characteristics and study of how the region’s various sub-regions interact with each other. Our staff reviewed the existing drainage basin and identified areas of concern, which included the watersheds and stormwater infrastructure within the Butler Beach drainage area. Data was collected and analyzed from FEMA historic claims, Florida Department of Transportation infrastructure, field observations, Natural Resources Conservation Service (NRCS) soils information, current St. Johns River Water Management District permits, National Oceanic and Atmospheric Administration (NOAA) storm data, multiple field surveys and observations along with other data sources.  In addition, a community forum/public meeting was held to identify other potential deficient areas. Each sub-region was evaluated, and recommendations were made for improvements. Maintenance considerations, capital costs and overall construction feasibility were considered. The proposed solutions were ranked based on the overall benefit cost analysis to assist the County in determining timing and funding of capital improvements to the drainage systems, overall effectiveness, ease of maintenance, feasibility of construction, and overall benefit to the sub-region.  Finally, a detailed with report with full details for each potential solution was created and presented to St. Johns County.  At a Glance 2.7 Square Miles Project Size $118,000 Project Cost Markets Land & site development Services Land & Site Development Water & Wastewater

Burkart Boulevard Bypass

Burkart Boulevard Bypass Seymour, Indiana This project involved constructing a 4.7-mile-long bypass around Seymour. The bypass extends from the US 50/Burkart Boulevard Intersection southwest and connects to the O’Brien Street intersection. The first phase of the project features a 99-ft. long bridge over the Conrail railroad, an MSE wall design that minimized the right-of-way footprint, a single-lane roundabout that can accommodate semi-truck and farm equipment traffic, and a new multi-use pathway along the project limits. The bypass also resulted in entirely new alignment and permanent traffic pattern changes. DCCM participated in extensive public involvement, continually coordinated with INDOT, the City of Seymour, and Conrail Railroad, and provided on-site and off-site mitigation efforts to accommodate all project features. At a Glance 4.7 Miles Project Size $17.2 million Project Cost ACEC State Finalist Project Award Markets Transportation Environmental Services Transportation Environmental Roadway Design Roundabout Structural Engineering Water Resources

Northeast Water Purification Plant Expansion

Northeast Water Purification Plant Expansion Houston, Texas DCCM partnered with the Houston Waterworks Team to perform a progressive design-build project to expand the existing City of Houston Northeast Water Purification Plant from 80 million gallons per day to 400 million gallons per day treatment capacity. DCCM was responsible for the structural and mechanical design of the new raw water intake pump station, located 1,000 feet offshore in the middle of Lake Houston. It has an access bridge and pump station platform with ten 1,000-horsepower vertical turbine pumps capable of delivering up to 560 million gallons per day (ultimate capacity) of raw water from Lake Houston to the Northeast Water Purification Plant. DCCM performed structural design modeling and simulation of a 30,000-square-foot pump station platform that supported the pump facility building, pump equipment, piping and electrical switchgears, and process mechanical design to install ten 1,000-horsepower vertical turbine pumps with two 96-inch header pipes, control valves, and a 25-ton bridge crane. The intake pump station platform is 13 feet above normal water level and 250 feet long by 120 feet wide, supported on a cast-in-place 1-foot-thick concrete deck with 3.5-foot-deep grade beams. DCCM designed and analyzed the intake pump station using the finite element program Structural Analysis and Designing Program. Dynamic analyses were also performed to verify the platform’s dynamic behavior under pump dynamic loads during operation. Bentley 3D models were used in the final design by structural, architectural, process mechanical, piping, plumbing, instrumentation, and electrical design disciplines. All design models were integrated to detect conflicts and complete the final product. At a Glance 400 million Gallons per Day $165 million Construction Cost Markets Municipal Services Water & Wastewater Utilities

IH 45 and SH 6 Water Distribution System Improvements

IH 45 and SH 6 Water Distribution System Improvements Galveston County, Texas DCCM provided preliminary and final design and construction-phase services for 8,100 linear feet of 24-inch water line as part of a collaboration between the Galveston County Water Authority and Galveston County to provide potable water to a future residential area in Texas City. To accommodate this needed water line, an alignment was established at the intersection of Avenue L and a Galveston County Water Authority canal in Santa Fe, where the line connected to an existing water line and then extended along the north high bank of the canal to a metering station site west of IH 45. This project was funded by the State of Texas through a Community Development Block Grant and administered by the Texas General Land Office due to damage from Hurricane Ike. The funding was allocated to Galveston County, thereby funding the construction and managing the design and construction phases. At a Glance 8,100 Linear Feet 24-inch Water Line $1.8 million Csontruction Cost Markets Municipal Services Utilities Water & Wastewater

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