Portfolio Category: Water & Wastewater

69th Street Wastewater Treatment Plant, Packages 5 and 6

69th Street Wastewater Treatment Plant, Packages 5 and 6 Houston, Texas Package 5: DCCM completed field investigation and final design services to replace the existing 69th Street wastewater treatment process instrumentation and controls for the entire wastewater facility. Work included the replacement of flow meters, analyzers, pressure and level instruments, pneumatic and electrical control valves, electrical conduits, and control panels for the lift station, headworks, flow distribution controls, oxygen reactors, clarifiers, return activated sludge and waste activated sludge pump stations, sludge thickeners, and an odor control system. Package 6: DCCM provided a preliminary engineering study, including filter pilot testing and evaluation of new tertiary filter technology to replace the existing sand filters at the 69th Street WWTP. DCCM worked with the City of Houston to procure a new filter system. The final design included modifying the existing treatment facility infrastructure and adjusting the hydraulic profile to fit the new filter system, a new electrical system with instrumentation, and control systems. The existing sand filter system was demolished and replaced with a Kruger disc filter system. The new disc filter system is rated for an average of 220 million gallons per day and a peak flow of 440 million gallons per day, making it Texas’s largest tertiary filter system installation. At a Glance 440 million Gallons Per Day $25.4 million Construction Cost Markets Municipal Services Water & Wastewater

42-inch Water Line Design, Segment 3 A1

42-inch Water Line Design, Segment 3 A1 Harris County, Texas DCCM provided final design and construction phase services for 14,000 linear feet of 42-inch water transmission line within a CenterPoint Energy electric transmission line corridor and easement. This water line is part of the West Harris County Regional Water Authority’s (WHCRWA) 2025 system, which will meet at least 60% of water demand with surface water. This is the latest project in a long history of working with WHCRWA to supply their surface water requirements. The project involved installing water lines in CenterPoint Energy’s electrical transmission line corridor for miles. Trenchless construction was required within 20 feet of truss towers and across busy roadways. Close coordination was maintained with the City of Houston and Harris County for permitting and the acquisition of record drawings. Collaboration with the design engineer ensured a proper connection to an 84-inch water line. Additionally, coordination with multiple petroleum pipelines and dry utilities in CenterPoint Energy’s corridor was necessary. At a Glance 42-inch Water Transmission Line $8.9 million Construction Cost Markets Municipal Surveying Services Water & Wastewater Program Management Surveying Utilities

Avenue S Rehabilitation

Avenue S Rehabilitation Galveston County DCCM provided the design of 8,600 linear feet of roadway reconstruction along Avenue S from 53rd Street to Seawall Boulevard. The paving cross-section comprised two travel lanes with two outside parking areas. The project design included replacing 8,900 linear feet of water line, including branches and intersections along the route, crossing intersections that were previously reconstructed for other concurrent projects. Additionally, a 15-inch sanitary sewer was replaced, stretching from 35th Street to 33rd Street, including branches and intersections. Our assessment of the drainage system along the corridor and side streets enabled us to determine the most effective methods for enhancing drainage efficiency while removing bridge blocks. The flat terrain of Galveston provided grading challenges, and with our detailed 3D grading abilities, the shallow underground storm system had the proper cover under the road and for some instances where standard cover was not achievable, it was discovered and known during the design or it was identified during construction and the design remedies were ready before construction was delayed. Our subconsultants performed geotechnical, surveying, SUE, environmental, and inspection services for the project. DCCM provided construction phase services for the City of Galveston and collaborated with the contractor to ensure the design intent was effectively implemented. The final product of the road was excellent, and the contractor successfully constructed the road and storm sewer system with minimal RFIs and minor adjustments to the road, sidewalks, and storm sewer system grading. All meetings were accompanied by a well-organized agenda and meeting minutes, which included detailed action items to be completed by the next meeting. This attention to detail and accountability helped lead the project to a successful completion and limited citizen complaints. Surveying Services DCCM supported land surveying services for 2.5 miles of Avenue S from 53rd Street east to Seawall Boulevard Drive. Tasks included right-of-way (ROW) determinations, topographic surveying, and subsurface utility surveying to support engineering design. The project included a full-depth replacement of existing pavement and utilities, including water lines and subsurface sanitary and storm sewer systems. Approximately 275 parcels were abstracted to support ROW determinations and graphically depict property ownership. Survey control was established, including ground targets for aerial triangulation of UAS/drone imagery acquired by a subconsultant. Lidar data was also collected, post-processed, and delivered to us for analysis and integration into our survey. Supplemental ground surveying was performed to support the validation of the imagery and lidar data. Final deliverables included 3D mapping in Civil 3D format and rectified orthomosaic imagery of the project extents. SUE Services DCCM provided SUE services along 8,600 linear feet of water and sanitary sewer line from Avenue S from 53rd Street to Seawall Boulevard. The SUE QL-B designation revealed more than 56,000 feet of utilities in that area. As in all SUE projects, the utility mainlines were designated. This project was unusual because all utility services were also designated so that the designers would have substantial utility information and the best chance to protect the utilities in place—this required electronically traceable duct runners, fish tapes, and electromagnetic sweeping. At a Glance $9.25 million Construction Cost $146,000 Survey Cost 86,000 Linear Feet of Sanitary Sewer Line 56,000 Feet of Utilities Markets Transportation Surveying Services Transportation Program Management Surveying Utilities Water & Wastewater

Piper Road Drainage Improvements

Piper Road Drainage Improvements Brazoria County and Pearland, Texas DCCM provided design plans and specifications for a bid-ready submittal package that included comprehensive drainage and minor roadway improvements for Piper Road. The 2,900-foot project extended from FM 518 (Broadway Street) on the north to Fite Road on the south. The project included an asphalt overlay, along with subgrade repairs where necessary, based on visual cracking and pavement failure. The design reduced the watershed area for the portion of Piper Road draining to the north, which diminished a recurring ponding problem at FM 518. The majority of the roadway now drains to Fite Road on the south using storm sewers underneath the former ditches. Driveway culverts were eliminated for the storm sewers draining to the south and were replaced with area drains between the driveways for direct drainage into the new storm sewer system. Using storm sewers in this manner eliminated the need to do costly utility relocations or ROW acquisition. At about the same cost as acquiring ROW and moving utilities, this concept greatly reduced the time required for project completion and the need to disrupt the front yards of homes along Piper Road. Existing, significant trees also did not need to be removed. Existing water and sanitary sewer main lines and services were either protected or replaced to accommodate the new storm sewers. We leveraged our relationship with CenterPoint Energy to expedite relocations with the proposed storm sewer before construction began, keeping the project on schedule. The project significantly improved drainage compared to the existing roadway ditches. At a Glance 2,900 Feet $1.2 million Construction Cost Markets Municipal Services Water & wastewater

Cedar Bayou Crossing Corridor Study

Cedar Bayou Crossing Corridor Study Harris County and Baytown, Texas DCCM was selected to provide professional services for the proposed Cedar Bayou crossing. The crossing will serve as a critical link for the City of Baytown to ensure the orderly development of the northern part of the city and provide necessary east-to-west mobility to supplement IH 10. The project area was from Hunt Road at Main Street to Kilgore Parkway at SH 146. DCCM provided project management, data collection, existing condition evaluation, alternative analysis, community outreach support, preliminary engineering, geotechnical investigation, subsurface utility engineering, survey, and an environmental analysis. DCCM conducted a corridor study to identify alignment alternatives and assess the project’s feasibility. The study included several aspects to consider and required sufficient information to measure and evaluate a range of viable improvement options. The traffic analysis reviewed traffic and crash data, existing roadways, traffic flow patterns, traffic counts, turning movement counts, and transit and traffic operations. The DCCM team conducted capacity analyses for designated locations and sections of roadways and made recommendations to improve traffic flow. DCCM provided hydrology and hydraulics (H&H) to support the corridor layout of the proposed roadway. This task used the latest Mapping, Assessment, and Awareness project (MAAPNEXT) models for Cedar Bayou as developed by the Harris County Flood Control District. DCCM also provided community outreach, public meetings, and City Council meetings. The project concluded with identifying recommended improvements, preliminary plans with several alternatives and their estimated costs, and a preferred alignment. Surveying Services DCCM performed professional surveying services to obtain and review existing lidar data and the limited preliminary ground survey data for the Cedar Bayou Corridor Study. The project spanned 3.7 miles from North Main Street, 3,300 feet south of IH 10 (west tie-in point), to the intersection of SH 146 and Kilgore Parkway (east tie-in point). The latest available lidar data published from USACE and Texas Natural Resources Information System covering the project area to evaluate and perform the following tasks: Data sets were extracted/downloaded into Esri ArcGIS (Pro+3D Analyst tool) and Context Capture/OpenRoads Cross-data checks were performed against public datasets from TxDOT, the City of Baytown, Harris County, and other available online resources. The MicroStation DGN deliverable included: DEM 2D building/structure footprints Roads, highways, and railroads Overhead transmission lines Other visible features within the lidar data Limited field surveying was performed. Field surveying tasks included setting four project control points, performing limited topographic surveying along North Main Street (1,000 feet north and south of the west tie-in point) and SH 146 (500 feet north and south of the west tie-in), and obtaining cross sections along the existing railroad running through the project. Field surveying also included determining the elevations of the existing railroad running at the railroad bridge over SH 146 and confirming (spot-checking) the lidar data in several accessible areas. The survey data was based on the NAD 83, Texas Coordinate System, South Central Zone (4204) CORS adjustment. Elevations were based on the NAVD 88 2001 adjustment relative to the lidar data. The survey information was provided in MicroStation Select Series 10. At a Glance 3.7 Miles $140 million Construction Cost Markets Transportation Surveying Services Transportation Surveying Utilities Water & Wastewater

SH 249 (Tomball Tollway), Phases I and II

SH 249 (Tomball Tollway), Phases I and II Tomball and Montgomery County, Texas DCCM was contracted by the Harris County Toll Road Authority (HCTRA) as the Program Management Consultant (PMC) for the design and management of both preliminary and final project designs, as well as construction management and inspection services for Phase II. We developed a project feasibility assessment, which resulted in the SH 249 (Tomball Tollway), Phases I and II engineering feasibility report, and served as the basis for the final design. On its first day of operation, eager toll users doubled the projected 17,000 daily toll transactions, cutting traffic on the existing frontage road in half. Funded entirely with toll road revenue paid by drivers who choose to use the Harris County toll road system, the final construction will extend the toll road into Montgomery and Grimes Counties to SH 105, streamlining trips to and from rapidly growing Grimes County and College Station. Phase I: Spring Cypress Road to FM 2920 This project provided travelers with four main lanes in each direction and was constructed between the existing TxDOT northbound and southbound non-tolled frontage roads. As PMC for HCTRA, DCCM completed an aggressive 9-month design program to deliver plans, specifications, and estimates (PS&E) for HCTRA to bid and construct this phase. DCCM provided leadership, schedule adherence, quality assurance, and oversight to 17 consultants, completing the PS&E for four new toll lanes in each direction along a 6-mile stretch of SH 249, adding five new bridges, retaining walls, and a drainage system that mitigates flooding. Drivers may now bypass seven stoplights while the frontage roads remain toll-free. All milestone submittals were met on time, and the project was constructed in only 16 months and under three construction contracts. Phase I was open to traffic in April 2015 and is exceeding all revenue forecasts. Phase II: FM 2920 to Spring Creek (Harris/Montgomery County line) Design preparations for Phase II began in October 2014 with design revisions to the TxDOT 2006 SH 249 Schematic. As in Phase I, DCCM was the PMC for the design of four-lane toll lanes in each direction, adding three-lane frontage roads on both north- and southbound approaches, five major bridges, flood-mitigating storm sewer detention, a collegiate practice field, and equestrian and bike trails. Services also included computing cut-and-fill quantities for roadway sections, concrete and reinforcement steel quantities for bridge deck pours, and payments for such pours on the contractor’s pay estimate. DCCM monitored the roadway excavation, subgrade preparation, concrete milling, embankment placement for abutments, installation of drill shaft and foundations, concrete beam placement, asphalt pavement placement, bent footings, column, cap pours, reinforced earth walls, 18- to 36-inch reinforced concrete pipes, and various concrete box culverts. Our team oversaw construction management and inspection services for this segment of the project. Phases I and II of the SH 249 (Tomball Tollway) project included environmental investigations and permitting, survey/ROW mapping, utility identification and assessment, subsurface utility engineering (SUE), and hydrologic and hydraulic (H&H) modeling and detention pond design. DCCM also provided construction phase services for Phase II and the direct connectors at SH 99 (Grand Parkway). Mainlanes, Phase I, Section 1 – Montgomery County MCTRA selected DCCM to prepare PS&E for mainlane and ramp construction for a 0.4-mile section of tollway north of Tomball, Texas. The project scope included roadway geometric design, traffic control plans, removal plans, drainage plans with both open and closed systems, SWPPP, cross-sections, general notes, specifications, and construction cost estimates. The DCCM team coordinated with both adjacent designers on the Montgomery County segment and with the design and construction teams of the Harris County segment to the south to deliver a synchronized product that minimized impacts to travelers and adjacent property owners and reduced overall project costs. At a Glance $101 million Phase I Construction Cost $99 million Phase II Construction Cost Markets Transportation Services Transportation Utilities Surveying Water & Wastewater

US Soccer Federation HQ & National Training Center

US Soccer Federation HQ & National Training Center Fayetteville, GA In December 2023, the U.S. Soccer Federation (USSF), the governing body for soccer in the United States, announced the relocation of its national headquarters from Chicago, Illinois, to Fayetteville, Georgia. DCCM is proud to serve as part of the site development team for this nationally significant, fast-track project. Planned for more than 200 acres, the $228 million complex is designed to be one of the largest and most advanced soccer facilities in the country. At full build-out, it will include a 200,000 SF headquarters and training center, 25 competition-level outdoor fields, an indoor field, and supporting infrastructure for U.S. national teams, development programs, and community engagement. DCCM is providing comprehensive surveying, civil site design, utility coordination, and permitting services to support successful on-time delivery. The facility is expected to open in Spring 2026, just ahead of Atlanta’s role as a host city for the FIFA Men’s World Cup. At a Glance 200+ Acres $228M Project Cost Markets Buildings Land Development Services Land & Site Development Utilities Surveying Water

The Hall at Bourbon Brothers Event Venue

The Hall at Bourbon Brothers Event Venue Gainesville, GA DCCM was proud to support the development of Bourbon Brothers Smokehouse & Tavern and Boot Barn Hall live music venue in Gainesville, Georgia. Situated at the northeast corner of Jesse Jewell Parkway and West Academy Street, this high-profile project brings a new dining and entertainment experience to the heart of downtown. The development includes a ~9,000-square foot restaurant and a ~16,000-squarefoot concert and event venue, along with supporting infrastructure including access drives, parking, drainage improvements, underground storm water retention and site utilities. The site, located within an existing paved lot, required creative design solutions to blend into the growing urban fabric of Gainesville. With the Bourbon Brothers project, DCCM continues its commitment to shaping quality spaces across North Georgia that enhance community, drive economic growth, and support long-term success for our partners. At a Glance 25,000 Square Feet $61,500 Project Cost Markets Land Development Buildings Water Services Land & Site Development Utilities Water

Wheatland Wastewater Improvements

Wheatland Wastewater Improvements Wheatland, IN DCCM led an internal and external team of engineers to design and develop a new sanitary sewer system for the Town of Wheatland. This system included designing three positive displacement blowers for a new extended aeration plant along with several miles of new low pressure force main, one lift station, and a package wastewater treatment plant for the town of 500 people. The team evaluated wastewater lagoons for Wheatland being crucial for maintaining compliance with regulations and ensuring effective treatment. One of the key challenges in the design of project was ensuring the project met the Town’s limited budget, supported by a $14M SRF grant award for water/wastewater. Through a combination of creative design and funding solutions and selection of a minimally invasive technology such as low pressure sewer, DCCM was able to secure reasonable bids that allowed the project to proceed. At a Glance 10 Miles $10.2M Project Cost Markets Municipal Water Services water “The team (DCCM) is nothing short of amazing on the projects we have worked on with them. They are always organized and available if there are questions. I have seen Aaron Crow, Poject Manager, work along with his team members as he is always clear and concise on what he is asking for. I believe the team excels under his leadership and never feel overwhelmed or worried about the projects because they communicate with us to keep everyone organized and on task. They have definitely been an asset to our Town and Utility!” Erika Goble Wheatland Deputy Clerk

PK Avenue Stormwater & Roadway Improvements

PK Avenue Stormwater & Roadway Improvements Auburndale, FL DCCM provided watershed planning, conceptual design, feasibility analysis, surveying, and cooperative funding support to develop a concept improvement plan for 3,500 linear feet of PK Avenue. As the gateway to downtown Auburndale, the City sought improvements that would not only resolve chronic roadway flooding and enhance stormwater quality for the 261-acre urban drainage basin but also improve neighborhood aesthetics and add a pedestrian trail for recreation. The recommended concept redeveloped PK Avenue from four lanes to two and incorporated low-impact development techniques, including bio-retention swales, on-street pervious parking with subsurface storage, and a one-acre retention pond. Our team also assisted the City in securing $1.3M in cooperative funding from the Southwest Florida Water Management District (SWFWMD). At a Glance 2019 Grand Award for Engineering Excellence in Water and Stormwater from ACEC-FL Award 2019 Award of Merit from ASLA-FL Award Markets Water Surveying Services Water Surveying

Water & Wastewater

Turn your vision into a reality.