Surveying Archives

Cedarspur Drive, Burkhart Road, and Winningham Lane Improvements

Cedarspur Drive, Burkhart Road, and Winningham Lane Improvements Spring Valley Village, Texas DCCM provided the preliminary engineering report, design, survey, and SUE QL-C and D for road paving and utility improvements in three separate areas of the City of Spring Valley Village. The project encompassed the reconstruction of Cedarspur Drive, Burkhart Road, and Winningham Lane East, totaling 2,200 linear feet. It included replacing 6,400 square yards of concrete roadway and driveways, water line, and sanitary improvements. Additional services included attending pre-bid meetings, bid evaluation, and award recommendation. DCCM also attended a preconstruction conference, reviewed shop drawings and requests for information, performed site visits as specified by the client, and provided record drawings. The design of the TCP was challenging because the project consisted of three streets with dead ends, requiring us to maintain two-way traffic while rebuilding a two-lane roadway. We limited work zones to 400 linear feet at a time to make it easier for residents traveling to and from their homes. Ongoing flagging and coordination with residents was imperative for a smooth project. DCCM coordinated closely with the City of Spring Valley Village, the contractor, and affected homeowners to provide a seamless design and construction experience. Homeowners were notified of the schedules, including the start and end times for work on their street. Homeowners were also encouraged to notify the city, the contractor, or the engineer if there were any issues. The project went smoothly with minimal issues. At a Glance 2,200 Linear Feet 6,400 Square Yards of Concrete $1.34 million Construction Cost Markets Municipal Surveying Transportation Services Surveying Transportation Utilities Water & Wastewater

108-Inch Northeast Transmission Line, Contract 99D-2

108-Inch Northeast Transmission Line, Contract 99D-2 Houston, Texas DCCM provided final engineering design and construction-phase services for 1.4 miles of 108-inch water main from Aldine Westfield Road to Willis Street in north Houston. This project was extremely complex due to the size of the water main and the congested area where the alignment was located. DCCM worked with the City of Houston and its Program Manager to develop a 50-foot water line easement through an existing urban region. To develop the preferred alignment, DCCM considered construction issues, including laydown areas, environmental constraints, traffic impacts, and existing utilities. DCCM developed alignment alternatives, such as tunnels instead of open-cut construction, in multiple areas to minimize or eliminate significant impacts on existing businesses, as numerous commercial buildings are close to the route. Tunnels were designed to mitigate the impact on the buildings and their operations in these areas. Since the project was in an urban region, DCCM worked closely with the existing utilities to develop utility conflict documents and support their relocation. The design also included construction phasing and traffic control to maintain access to residences, facilities, and emergency services. The water line was a significant transmission main constructed via open-cut and tunneling methods. Each method was optimized for the project. At a Glance 108-inch Water Main 7,400 Linear Feet $31 million Construction Cost Markets Municipal Surveying Services Water & Wastewater Surveying Utilities

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

Beltway 8 High-Mast Illumination

Beltway 8 High-Mast Illumination Harris County, Texas DCCM provided surveying services for a high-mast illumination design project along Beltway 8 for the Harris County Toll Road Authority (HCTRA) from November 2018 through September 2019. For this project, Baseline coordinated a low-altitude aerial lidar flight along 25 miles of Beltway 8, from north of Lansdale Drive to east of IH 45. This 25-mile segment was divided among four survey consultants, and our firm was responsible for 5 miles from north of Lansdale Drive to Briar Forest Drive. DCCM verified the existing horizontal and vertical controls and established new controls, including primary and secondary aerial controls. Our subconsultant, DAS, used this control for the aerial lidar flight, and DCCM field crews used it to acquire supplemental survey data. GPS set control, and digital differential levels were run through all control points to ensure vertical accuracy. Control index sheets were also provided. Close coordination with DAS and the other three survey consultants was maintained to ensure a seamless and consistent product was delivered. DCCM played a vital role in cost savings for HCTRA by suggesting a single flight for the entire project rather than each consultant acquiring their own flight data. Coordination among the consultants was also ongoing to ensure the survey and aerial control were accurate and relevant. Additionally, DCCM provided supplemental field surveying to map surface features, obscured areas, flowline elevations, pipe sizes, and flow directions for storm drainage, as well as to capture all other features and utilities not captured by the aerial lidar. A Texas811 (one-call) was initiated to have utilities marked and flagged; abstracting and research were performed to obtain the latest ownerships of adjoining parcels; ROW boundaries were determined based on provided record maps, found monumentation, and deeds; and plats were obtained through research for DCCM’s entire segment. DCCM staked the project, and weekly progress reports were provided to the HCTRA Project Manager, enabling our team to execute work in a professional and timely manner. At a Glance 25 Miles Markets Surveying Services Surveying

Bayland Island Development

Bayland Island Development Baytown, Texas DCCM provided the surveying associated with the development of this 27-acre peninsula (island) located south of SH 146, just east of the Fred Hartman Bridge in the City of Baytown. Close coordination was conducted with the City of Baytown officials, title companies, and developers. The survey included detailed abstracting of a chain of title for mineral leases, pipelines, and real property records. The firm performed shoreline boundary surveys of tidally influenced areas, boundary surveys of upland areas, and topographic surveys of the island. Additionally, DCCM prepared an American Land Title Association/National Society for Professional Surveyors survey of the island and roadway access from SH 146, as well as a 6.8-acre portion of the island for development. The firm also coordinated utility and access easements and prepared and coordinated the platting of the entire project. An existing marina sports bar and grill facility is located on the island. Locating and identifying existing utility easements and utilities that served the island was difficult, especially a non-visible sanitary sewer force main. The DCCM office personnel and field crew worked closely with the City of Baytown’s public works department, subsurface utility engineering consultants, and others to excavate and locate the buried utility in various places and obtain an accurate location and depth of the line. Another challenge faced during the project was coordinating with engineers, architects, city planners, and various city departments. DCCM implemented a solution by conducting regularly scheduled team progress and scheduling meetings. These meetings were crucial in ensuring the project remained on track and continued progressing productively. Additionally, weekly progress reports were provided to the City of Baytown to inform them about the project’s status. Through this experience, it was learned that regular meetings with the entire team not only help prevent potential issues but also promote organization and accelerate the project’s overall progress. At a Glance 27 Acres $140,000 Survey Cost Markets Surveying Services Surveying

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

League City GPS Control Points

League City GPS Control Points Galveston and League City, Texas In late 2021 and early 2022, DCCM conducted accurate horizontal and vertical GPS control surveying to update the City of League City’s GPS Survey Control Monument System. The existing 36 control monuments were recovered and reobserved, and observed or missing monuments were reset. Multiple redundant RTK GPS observations were performed at each point using the Hexagon (Leica) HxGN SmartNET Real-Time Network, with a minimum of three different satellite constellations. The disturbed and missing points were reset with ¾-inch aluminum deep-sectional rods in 6-inch PVC sleeves in concrete. The rods were driven to refusal or a maximum depth of 27 feet. Steel access covers marked the League City survey control point, and point designation (point number/identifier) was installed on each new point. The updated and new data obtained on each existing and new point consisted of the following: Horizontal datum: NAD 83, CORS adjustment (2011), EPOCH 2010.00 in U.S. survey feet, Texas Coordinate System, South Central Zone 4204. North and east coordinates were reported in grid values and latitude/longitude. Mapping angle, scale factor, and combined scale factor were also provided. Vertical datum: NAVD 88 CORS adjustment with GEOID Model 18. Elevations were reported in U.S. survey feet. A detailed survey report was provided, which included: Detailed summary with background information (monument history) and survey methodology used Overall project vicinity maps showing the location of points SmarNet CORS information sheets Final coordinate list New survey control data sheets At a Glance 36 Control Monuments $63,350 Survey Cost Markets Surveying Services Surveying

Pelican Causeway Survey

Pelican Causeway Survey Galveston County DCCM performed surveys in connection with a proposed route for a new Pelican Causeway from Galveston Island across to Pelican Island. Nedra Foster Townsend, LSLS, RPLS, served as Licensed State Land Surveyor (LSLS) for this project, and Joe Mattox, LSLS, RPLS, served as Project Manager. DCCM’s tasks included researching both current and historic data to evaluate natural and artificial changes to the landscape; research on court cases that affected the boundary locations; calculations of tidal datums for which we relied on Tide Gauge 8771450 Galveston Pier 21; survey of tidal datums and location of state submerged tracts; establishment of new control and recovery of existing control; survey of affected tracts and monumentation of new take parcels; topographic surveys of take areas; metes-and-bounds descriptions of each take parcel; and mapping proposed right-of-way, shoreline survey, and take parcels. At a Glance Coastal and Tidal Survey 2023 Completion Date Markets Surveying Services Surveying

Dogwood Trail Boundary Survey

Dogwood Trail Boundary Survey Tyler County, Texas DCCM determined boundaries for a privately held timber company tract of land and performed research of Texas General Land Office archives, Hardin County records, and private survey records. Fieldwork in the area determined the location of existing occupation, monumentation, topographic features, and natural features. The evidence was analyzed and compared with the recorded evidence, and, where appropriate, lines were marked with lathes that were intervisible. Plats that included trails and natural features for park use and metes and bounds were prepared for use in the land transfer. The resulting 40-acre partition was transferred to the Big Thicket Natural Heritage Trust. At a Glance 40 Acres $7,000 Survey Project Cost Markets Surveying Services Surveying

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