Topographic Surveys 

The success of any construction project depends heavily on the quality and accuracy of the topographic base map.  Incomplete or inaccurate base maps can result in design issues during construction, causing costly delays and additional expenses.  LDSI has a wide range of experience in providing quality design surveys for architectural and engineering design on all types of projects.  With a licensed Professional Engineer on staff, LDSI has the ability to anticipate the designers needs thereby providing “one step ahead” service.  We are mindful of the time constraints often placed on preliminary design projects, and are therefore ready to respond quickly to the special needs of our clients.

Construction Stakeout 

The role of the surveyor in construction is often underestimated.  Surveyors are an essential part of design/build community that includes engineers, architects and contractors.  LDSI provides grade and pipe staking, building layout, earthwork quantity verification and as-built data collection/drawing preparation.  Our experienced field crews along with our quality control measures help identify potential problems before they get built.



There are millions of miles of underground utilities in the United States. Construction records of these utilities are often poor or inadequate which contribute to the potential of utility damage during new construction. This is a major industry concern. LDSI, Inc. has the ability to determine the precise location of underground utilities to avoid potential conflict with new construction and resulting construction delays, re-design, utility damage or personal injury.

SUE is an engineering practice that has evolved considerably over the past few decades. The SUE process combines civil engineering, surveying, and geophysics. It utilizes several technologies, including vacuum excavation and surface geophysics.

Subsurface Utility Engineering can be used with good results on roads, airport, railroad, transit, building construction, military, sanitation, nuclear, and any other public works projects where underground utilities may be encountered. It can also be used for environmental purposes, such as detecting and mapping underground storage tanks, septic fields, and even contaminants. SUE adds value, quality, and accountability to any project.

LDSI,  Inc. can perform subsurface utility engineering at Quality Levels A-D based on your needs. Our goal is to eliminate delays and extra costs associated with existing underground utilities. Doing so not only increases safety, but reduces economic loss in the project planning and construction phase.



A geographic information system (GIS) as defined by ESRI, integrates hardware, software, and data for capturing, managing, analyzing, and displaying all forms of geographically referenced information. GIS allows us to view, understand, question, interpret, and visualize data in many ways that reveal relationships, patterns, and trends in the form of maps, globes, reports, and charts.  A GIS helps you answer questions and solve problems by looking at your data in a way that is quickly understood and easily shared.  GIS technology can be integrated into any enterprise information system framework.

LDSI’s GIS capabilities have grown over the years from the most basic and simple tasks of providing base data for CAD users to the creation of complex file Geodatabases for large inventory projects.  We utilize the very latest software technology offered by ESRI’s GIS Suite of products.  We have the experience necessary to perform complex spatial analysis such as population density studies, network analysis involving drive time service areas and shortest route delineation, as well as three dimensional analysis for steep slopes delineation to list only a few GIS applications.  We take pride in the production of high quality presentation maps involving the use of the most current cartographic techniques available.  Data collection, data management and data analysis.  LDSI can provide a solution for your project.



Small Unmanned Aerial Systems (sUAS)

sUAS is one of the new tools for design surveying services.  These systems are being used for mapping, aerial imagery, inspections, stockpile mapping & volumes and Project Management.  PricewaterhouseCoopers, LLP suggest that commercial applications of sUAS technology is expected to grow into a $125+ billion industry by 2020.

sUAS mapping has evolved over the past couple of years and continues to grow as hardware and software capabilities gets better, costs are going down.  Today you can have aircraft that carry many different payloads that capture many different kinds of data.  There are standard RBG cameras that collect high resolution photos that can be utilized in creating a high resolution mosaic image that is geo-referenced and generate a point cloud based upon the pixels.  Infrared cameras are used to inspect solar farms; monitor crops & forest; search & rescue; pipeline inspections; leak detection and building efficiencies.  Multi-Spectrum Sensors are generally associated with Precision Agriculture and can provide data on several traits, such as emergence; vigor/greenness; water stress and yield potential.  LiDAR scanners that provide precise elevation data and dense point clouds to provide topographic mapping, even in canopy.

LDS has 3 aircraft and two certified FAA Part 107 Remote Pilots on staff.  We are available to discuss your project to see if sUAS is the right tool for your project.

Our Services

Boundary Survey

Topographic Survey


Construction Stakeout/Surveys

Data Collection

GIS Data Management and Analysis

GPS Surveys


Subsurface Utility Engineering

Volume Surveys

Flood Plain Certifications

Elevation Certificates

Wetland Surveys

Legal Descriptions

Inventory Management

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