Callon Dietz Inc. Ontario Land Surveyors

Using a GNSS receiver coupled with a SonarMite Echo Sounder, Callon Dietz can capture highly precise data from the beds of rivers, lakes and ponds to build digital terrain models of the bottom of these bodies of water.

Callon Dietz has owned a mobile mapping system for the past year. We have utilized the system on 10 rural and 1 urban project. The system utilizes 2 Faro Focus X330 scanners, a Velodyne VLP-16 Puck and a Ladybug5 360? spherical camera working with a Novatel Inertial Measurement Unit (IMU) and a GPS receiver to collect survey quality data. Chevrons are painted on the road surface and glass beads are sprinkled on the wet paint to increase reflectivity. Chevrons are placed at approximately 250 metre intervals and are tied to the project control network using a 1” total station and digital level. Audit lines are also measured at the same time as the chevrons are surveyed. The chevron control coordinates are used to align the scan data to the project control network using VG4D SmartLIDAR Explorer and/or ScanLook RT software. When we have reviewed the audited results on past projects and we have found that the LiDAR data matched the audit data at values much smaller than the 20mm vertical and 15mm horizontal accuracy specified by MTO. Features are extracted from the georeferenced and controlled locked LiDAR data in a number of software packages. Generally, features required for the survey are readily apparent in the scan data, but where needed, the digital imagery is used to clarify feature type i.e. electrical manhole vs sewer manhole and feature extent. Rock is easily extracted from the scan data but other features beyond the road shoulder can be difficult to identify in the scan data because of grass coverage. Generally speaking, we collect features beyond the shoulder using conventional survey techniques. Quality control of the scan data is very similar to conventional survey techniques. Profiles of centerline, driving lanes and pavement edges are reviewed for data irregularities. Cross sections are also reviewed for spikes and irregularities. Any discrepancies illustrated in the profiles and cross sections are investigated and resolved prior to delivering the survey. The mobile mapping system helps to minimize time needed on the road surface, thereby increasing worker safety. It also helps to collect hard surface data efficiently in the shoulder seasons so that schedules can be better maintained in late fall or early spring. The scan data and digital imagery is also useful for asset management. In many instances feature condition can be determined from the digital data eliminating a field visit.

Callon Dietz prepares a significant proportion of the subdivisions and condominiums in Middlesex County. We also work in the neighbouring counties and as far as Niagara and Simcoe counties. We have extensive experience in subdivision design and registration, and have registered many types of condominiums including: - Standard Condominiums - Highrise - Townhouse - Detached - Commercial - Mixed use - Conversion of rental units, both townhouse and highrise - Vacant Land Condominiums - Leasehold Condominiums Defining ownership limits is quite complex in most condominium projects. Well-crafted plans accurately establish the boundary between individual ownership and common, or shared, elements. These include common elements that are used exclusively by an individual unit owner such as driveways, patios and courtyards. Any required easements are also defined. In phased developments, additional easements need to be defined to assure that all unit owners and utility companies have access to the facilities and services in the project.

Land information services relate geo-spatial data to digital maps. Geo-spatial data includes everything from street line networks, addresses, and utilities to the components that make up the fabric of a specific lot such as roads, buildings and easements. Geo-spatial data is useful in applications as diverse as emergency vehicle routing, land use detailing, and market research. At Callon Dietz, we begin a typical Land Information project by mapping all of the specified real-world physical details and relating them to a world coordinate system. Our expertise combined with superior equipment facilitates rapid and accurate data acquisition. - Automated Mapping/Facilities Management (AM/FM) - Utilities mapping - Parcel mapping

At its most basic, a survey establishes or re-establishes property boundaries. At its most complex, a properly prepared survey can settle legal disputes over property ownership. Callon Dietz is the first cadastral surveying firm in Ontario to achieve ISO 9000 certification. This means a lot to us and even more to customers who value quality. Our services are in demand from legal and real estate professionals, residential and commercial property developers, and individual homeowners. We prepare boundary plans required for development, severances and real estate transfers. Surveys can be supplied traditionally (paper) or in digital CAD format. - SRPR (Surveyor’s Real Property Report) - Reference Plan

Whether it’s a highway project, city street, open field or city block, our experienced staff uses a combination of technologies for a correct and cost-effective product. Prior to beginning each project, accuracy specifications are reviewed to determine which measurement technology will best meet client specifications. We use a quality control process developed in-house that is certified to ISO 9000:2008. Once a survey is complete, we perform a thorough field check of the site, plan in hand. - Digital terrain modelling - Boundary confirmation - Plan compilation - Geodetic surveys

Geodetic surveys define the height, latitude and longitude of a point, resulting in data that can be correlated to a known coordinate system. Using Geodesy, we create a 3D rendering that accounts for the size and shape of the earth. • Horizontal/vertical control • Control network design • GPS positioning • Precision leveling

Callon Dietz works with a number of utility companies to assist them in locating and constructing their new plant. For Union Gas, for example, we assist them with establishing property lines for gas main installation. Callon Dietz also works with a number of wind farm developers laying out turbines, access roads and distribution lines. Our expertise in handling large data sets over large areas help keep the construction process on schedule.