Portfolio Archive

Chattooga Referendum

Hall County Program Management Chattooga County, Georgia DCCM provided comprehensive program management and consulting services to support Chattooga County’s preparation for the 2026 Transportation Special Purpose Local Option Sales Tax (TSPLOST) and Floating Local Option Sales Tax (FLOST) referenda. Working under the direction of the Sole Commissioner, the DCCM team served as a trusted advisor and extension of County staff throughout the referendum development process. The team collaborated closely with County and municipal elected officials, senior staff, and department leadership to establish the overall scope, schedule, and key milestones necessary to advance the referenda. Services included developing revenue projections and distribution methodologies for both TSPLOST and FLOST, ensuring equitable and legally compliant allocations between the County and its cities. DCCM facilitated the development and refinement of the 2026 TSPLOST project list by coordinating reviews of the County’s capital improvement priorities and aligning proposed projects with anticipated revenues. The firm also supported negotiations among the County and municipalities, assisting with the preparation of intergovernmental agreements (IGAs) and associated resolutions for legal review and final approval. In addition, DCCM prepared all required documentation to place the referenda on the ballot, including IGAs, resolutions authorizing execution, election call documents, and statutory advertisements. The team coordinated the referendum schedule and monitored required election advertising to ensure compliance with state and local requirements. To support voter understanding, DCCM assisted with the coordination and development of educational materials explaining the purpose, structure, and eligible uses of TSPLOST and FLOST revenues. This included guidance on public information best practices, participation in the development of printed and digital educational content, and clarification of allowable “do’s and don’ts” related to referendum education efforts. These activities helped ensure that the County’s public outreach remained informative, transparent, and compliant with applicable regulations. Photos were provided by the County for Public Education materials At a Glance TSPLOST Referendum FLOST Referendum Markets Municipal Services Program Management

Substation 138-kV Transmission Line Improvements

Substation 138-kV Transmission Line Improvements Houston, Texas DCCM performed detailed structural engineering for the Substationb138-kV transmission line, 72-count ADSS single mode fiber cable, and the underground 72-count single-mode fiber routes and connections at both substations. The project included designing 3.7 miles of 72-count single-mode ADSS, bundled Suwannee ACSS, and 3/8-inch high-strength steel static, the design of several new concrete pole structures and extensively modified existing lattice structures. The team placed splice boxes along the transmission line. New drilled shaft foundations were designed for several of the new steel poles. We also performed construction support. At the end of both substation projects, we provided design and drawings for the Substation campus fiber routes to connect ADSS fiber to the telecommunications shelter and substation control rooms, created CAD plan and profile drawings, and CAD details for butt fusions splicing connections and fiber patch panels. At a Glance 2022 Project Completed 138kV Transmission Line 72-count ADSS Single Mode Fiber Cable Markets Power Services Utilities

Regional Active Transportation Plan (RATP)

NLCOG Active Transportation Plan Northwest Louisiana DCCM was selected by the Northwest Louisiana Council of Governments (NLCOG) to develop a Regional Active Transportation Plan (RATP) for the MPO planning area of Bossier, Caddo, DeSoto and Webster Parishes. This plan will be used as a tool by the NLCOG to improve upon its network of existing facilities and to develop new facilities that provide for improved and safer walking, bicycling, and other forms of micro-mobility for transportation and recreational opportunities. The Plan identified deficiencies and specific improvements to infrastructure with the goal of building a complete network for active transportation users, and will propose project selection criteria to prioritize current and future projects to make the best use of available funding sources and opportunities. To assess the existing conditions experienced by people walking and biking in the region, a comprehensive safety analysis for vulnerable users is evaluating the high-injury network where crashes disproportionately affect people walking and biking and makes recommendations for countermeasures to address specific issues. A latent demand analysis and analysis of previously collected public information will be used as inputs into the development of a safe and comfortable all ages and abilities (AAA) network free from barriers to access. This plan includes a broad outreach component, involving stakeholders, advocates and members of the public throughout the process to create a community-driven plan to make walking, bicycling, and other active modes of transportation safer, more comfortable, and more convenient throughout the region. At a Glance 2024 Completed $280,000 Fee Markets Transportation Services Transportation

Long Range Transportation Plan 2040 Update

Long Range Transportation Plan 2040 Update Shreveport, Louisiana DCCM developed the LRTP for the Shreveport-Bossier City metropolitan area. The LRTP addressed regional and local transportation goals and objectives and encompassed all modes of transportation. The project included extensive public outreach and stakeholder consultation, including public visioning meetings; detailed socioeconomic projections based on a local, expertdriven Delphi Process; and a complete remake of the regional travel demand model (TDM), including a mode-choice component. The plan also addressed Transportation System Management and Operation (TSMO) strategies, multi-modal system deficiencies, safety concerns, and project travel demand for the horizon-year 2040. In addition to the traditional bike and pedestrian element, the project developed a Caddo Parish-specific bike plan that addressed unique needs within the community. DCCM conducted a series of scenario-based planning exercises to inform the plan development. DCCM also developed performance-based metrics used in a Project Selection Process (PSP) that addressed deficiencies identified in the MPOs triennial audit by FHWA. The PSP provided a link between the public visioning process, stakeholder input, and prioritization by the Technical Committee that addressed the multi-modal needs through the 2040 planning horizon. A new regional TDM was constructed based on the state of Arkansas’s statewide model interface and available local data. The new TDM was a state-of-the-practice four-step model that included a cross-classification trip generation model, a gravity model for trip distribution, a mode choice model to split person trips by mode, and traffic assignment by time of day. The TDM included a feedback loop, intersection delay, and advanced reporting features. At a Glance $839,000 Project Cost Markets Transportation Services Transportation

Houston Country Club Holes No. 8 and No. 10 Bank Stabilization

Houston Country Club Holes No. 8 and No. 10 Bank Stabilization Houston, Texas DCCM was contracted by the Houston Country Club to provide engineering services for the channel slope repair on the south bank of Buffalo Bayou (HCFCD Unit No. W100-00-00) along the golf course fairways of holes 8 and 10. The project was previously designed by another firm and partially constructed but never closed out due to channel bank failures associated with a deep geotechnical failure below the slope. DCCM and contractor, BRH-Garver, as well as a geotechnical consultant, Professional Service Industries (PSI), and developed a structural solution with closely spaced drilled shafts to stabilize the failed channel slopes and to prevent future channel bank failures. The project consisted of two separate stretches of bayou being repaired. For one alignment, we performed a slope up from the existing bench and lower the top of bank. For the other channel section, DCCM added a variable height wall to be able to match the existing top of bank. The limits of the channel repair work was 1,225 feet along the fairways of hole 8 and 850 feet along the fairways of hole 10 for a total distance of 2,750 feet. The scope of services included the following: Designing the structural elements required to establish a stable slope system Coordinating the design and details of construction with the design/build contractor and the owner’s representatives Coordinating with PSI geotechnical engineers for a design of a stable slope system Preparing plans, specifications, and estimates (PS&E) Preparing hydrologic and hydraulic (H&H) impact analysis report Obtaining applicable signatures and permits from City of Houston and Harris County Flood Control District (HCFCD) Issuing a Letter of Map Revision at project completion Preparing as-built construction documents to finalize City of Houston and HCFCD permit requirements As a result of teaming with a local geotechnical firm, a deeper global failure was discovered at the location of the failures. A previously unknown slickenside soil layer was encountered at a depth below previous project borings. DCCM resolved this problem by extending drill shafts below this layer of weakened soil immobilizing the failure. At a Glance $10M Construction Cost 2,750 Feet of Channel Repair Work Markets Water Services Water & Wastewater

Little Cedar Bayou Improvements, Phases I and III

Little Cedar Bayou Improvements, Phases I and III La Porte, Texas Phase I: DCCM provided preliminary engineering, final design, and construction phase services for improvements to the Little Cedar Bayou inline detention basin. Improvements were required to reduce negative impacts to the downstream watershed after major storm events. Key design and permitting features included: Adding 220 acre-feet in storage volume Land acquisition A reinforced concrete control structure at the crossing of SH 146 Harris County Flood Control District approval USACE permit for mitigation of impacts to regulatory waters Phase II: DCCM provided preliminary design, final design, and construction phase services for 2,500 feet of channel widening improvements in La Porte. The channel widening passes through residential and commercial areas. The project allows this section of Little Cedar Bayou to handle major storm events without negative impacts to the downstream watershed. Services included the following: Land acquisition allowing for widening the channel right-of-way (ROW) from 60 feet to 140 feet Design elements incorporated backslope drains, riprap, grade and slope protections, and new storm sewer outfalls Funding for the project was administered through the Texas GLO. USACE permit Coordination with Harris County Flood Control District and USACE. Changes in USACE’s policy occurred during the project regarding the process for obtaining USACE permits. DCCM proactively met with USACE and modified the proposed channel design to incorporate the use of natural stream design techniques. USACE approved the permit for this project as a result of DCCM’s early coordination. The initial project schedule was maintained throughout the project duration. This project successfully provided flood reduction in adjacent and upstream neighborhoods. At a Glance $1.4M Project Budget 220 Acre-Feet Storage Volume 2,500 Channel Widening Markets Water Services Water & Wastewater

Collins Park Erosion

Collins Park Erosion Houston, Texas DCCM was selected to study and provide remedial measures to reduce erosion of the north banks of Cypress Creek (K100-00-00) adjacent to Collins Park. Cypress Creek, within the project limits, is a natural channel migrating to the north and undermining an asphalt trail owned and maintained by Precinct 4, a corridor parallel to K100-00-00. Cypress Creek within this reach does not have backslope swales or interceptors; significant uncontrolled sheet flows in the project area are found to increase erosion and rilling along the banks of K100-00-00. DCCM quantified the impacts of the sheet flows and identified design solutions. The Precinct 4 trail is a public facility. Therefore, the project is sensitive to public interest, and we have approached it with this in mind. Within the project area, there is a 92-inch outfall with a large cast-in-place junction now located in the beds of K100-00-00. The 78-inch outfall has been undermined and disconnected from the manhole, and there is concern about additional erosion around this large manhole, which could cause future issues. DCCM successfully conducted detailed field investigations and provided prompt engineering services, addressing the erosion issues by regrading the slopes and adding stone toe protection and rip rap around the outfalls. This design economically addressed the infrastructure concerns providing a long-term solution. At a Glance $220,000 Project Budget Markets Water Services Water & Wastewater

Lake June Phase 1 – Pump Station

June Lake Phase 1 – Pump Station Spring Hill, Tennessee June Lake is a premiere mixed-use development located on nearly 800-acres at the gateway to the City of Spring Hill, Tennessee. Located adjacent to I-65, June Lake is fully entitled for 2,900 homes, 3.9 million SF of commercial office space, 1.3 million SF of retail and restaurant space, and 400 hotel rooms. DCCM was contracted to design and permit the water and sewer infrastructure for the development, including the Phase 1 sanitary sewer lift station. The lift station was designed to manage a peak demand of 604 gpm, with a total dynamic head (TDH) of 70.2 ft. The design was complicated by the force main having to overcome two separate high points. Ultimately, a steady-state analysis determined that the water column within the force main would start to separate at Station 14+00 and become gravity flow at Station 14+40. The lift station has a 10-ft diameter wet well and utilizes duplex 50-horsepower suction-lift Gorman-Rupp pumps. The station is equipped with an emergency bypass quick-connect fitting and valving that allows City maintenance equipment to continue to manage the demand if the pumps are offline. Services included survey, engineering design, permitting, and construction administration. At a Glance $85,000 Design Cost Markets Water Surveying Services Water & Wastewater Surveying

Shelby House Samaritan Recovery Center

Shelby House Samaritan Recovery Center Nashville, Tennessee DCCM’s survey team in Nashville provided construction staking services for Phase II of the Shelby House Samaritan Recovery Center in Nashville, Tennessee. Phase I of the development included the completed Shelby House and the initial Samaritan Recovery Community facilities. Shelby House is an affordable housing project designed to support individuals transitioning out of homelessness. The 44‑unit facility offers a range of supportive services focused on promoting long‑term stability and self‑sufficiency for its residents. The Samaritan Recovery Community complements this mission by providing comprehensive recovery services for individuals overcoming substance abuse. The campus includes residential treatment, outpatient services, and supportive housing, all tailored to foster sustainable recovery. During Phase II, construction took place while the Samaritan Recovery Community remained fully operational. Contractors developed expanded facilities to meet growing demand, effectively doubling the organization’s capacity to serve the community. The expansion also added much‑needed affordable housing to the downtown Nashville area, further reinforcing the project’s community‑focused impact. Photo Courtesy of Holladay Ventures At a Glance 2 Phases Markets Surveying Services Surveying

Vanderbilt Legends Clubhouse Renovation and Expansion

Vanderbilt Legends Clubhouse Renovation and Expansion Franklin, Tennessee DCCM was engaged by Meyers+Associates to deliver comprehensive land surveying and civil engineering services for the expansion of the Vanderbilt Legends Golf Clubhouse. Our scope of work focused on producing a detailed topographic survey, site construction drawings, and complete permit application packages to support the proposed building enhancements. The expansion project encompassed the addition of kitchen facilities, new locker rooms, a second-level fitness center, administrative office space, a new elevator, and enlarged outdoor terrace areas. In a prior phase of the renovation, DCCM was also selected to design the regrading of the practice green, incorporating stormwater management solutions. At a Glance $42,000 Design Cost Markets Land Development Surveying Services Land & Site Development Surveying

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