What Is a Lateral Launch Inspection and Why Is It Used?
A lateral launch inspection uses a mainline CCTV crawler that travels through the sewer main and then deploys a secondary camera — the lateral launch head — that extends out of the main and up into each service lateral to inspect the connection and the lateral pipe itself. This approach allows inspection of sewer laterals without requiring access from the property end, making it far more efficient for municipalities and utility operators inspecting large numbers of laterals along a main corridor. The lateral launch camera travels up to 200 feet into a lateral from the mainline access point, recording pipe condition, joint integrity, root intrusion, and offset joints. In Utah, lateral launch inspection is increasingly required before and after horizontal directional drilling projects to confirm that new bore paths have not intersected existing sewer laterals. Delta provides lateral launch inspection across Salt Lake, Davis, Utah, Summit, and Washington Counties.
What Does a CCTV Pipe Inspection Report Include?
A professional CCTV pipe inspection report documents the physical condition of the pipe from entry point to terminus and provides the structured record that engineers, municipalities, and property owners need to plan repairs, support permit applications, and demonstrate infrastructure due diligence. A complete Delta CCTV inspection report includes: HD video footage of the full pipe run with timestamp and distance counter overlay; photographs of every defect, connection, or anomaly encountered; pipe material, diameter, and flow direction; GPS-referenced location of the inspection start point and any significant findings; a defect log cataloguing each observation with its distance from the access point, defect type, and severity rating; and a written summary with recommended action prioritization. For municipal and public works clients, reports can be structured to NASSCO PACP (Pipeline Assessment Certification Program) grading standards — the national benchmark for pipe condition assessment used by engineers and asset management systems throughout Utah and the Western United States.
How Does a Sonde Locating Beacon Work During CCTV Inspection?
A sonde is a small radio transmitter — typically operating at 512 Hz — built into or attached to the CCTV camera head. As the camera travels through the pipe, the sonde continuously broadcasts a signal through the pipe wall and soil to the surface. A technician walking above ground with a compatible sonde receiver traces the signal to pinpoint the camera's precise horizontal position and measures its depth below the surface. This allows Delta to map the exact route of a non-metallic pipe that would otherwise be undetectable by standard electromagnetic utility locators, which only work on conductive materials. The resulting sonde trace is paint-marked or GPS-logged on the surface, creating an accurate as-built record of pipe position and depth for engineering drawings, excavation planning, or Blue Stakes conflict assessment. Sonde locating is especially valuable on private laterals, storm drains, and older infrastructure where reliable pipe records do not exist.
Can CCTV Inspection Find a Cross-Bore in a Gas Line?
Yes — CCTV lateral inspection is the primary method for detecting cross-bores, which occur when a directionally drilled utility line (most critically a gas line) has accidentally intersected and passed through an existing sewer lateral. It is clearly visible on camera as a foreign pipe or obstruction crossing the interior of the sewer line. Cross-bores are a serious public safety hazard: a plumber or contractor who attempts to rod or jet a blocked lateral without knowing a gas line crosses it can rupture the gas line, causing explosions and fatalities. In Utah, where horizontal directional drilling for gas distribution has been active for decades along the Wasatch Front, Dominion Energy and local municipalities increasingly require pre- and post-bore CCTV lateral inspection on all new HDD projects. Delta's lateral launch inspection service is the correct tool for cross-bore detection programs — inspecting laterals from the mainline without requiring property access across an entire corridor in a single mobilization.
CCTV (Closed‑Circuit Television) pipe inspection uses a high‑resolution camera system to visually inspect the inside of sewer, storm, and utility pipes. A camera on a crawler or push rod is sent through the line to capture live video of defects like cracks, roots, blockages, corrosion, and joint separations. This non‑destructive method lets crews see exactly what’s happening underground, document pipe condition, and plan cleaning, repair, or rehabilitation without unnecessary digging.
Both mainline and lateral launch camera systems typically include an integrated sonde (locating beacon) that emits a signal detectable from the surface with a locator. As the camera moves through the pipe, the operator can mark the depth and horizontal position of the line and any defects (e.g., collapsed sections, sags, or service taps).
This precise locating supports targeted repairs, minimizes excavation, and helps build accurate as‑built maps of the underground system.
Lateral launch inspection is a specialized form of CCTV where a small side‑launch camera is deployed from a mainline crawler into lateral pipes that branch off the main sewer. The main camera drives down the larger pipe, then a secondary camera “launches” into each service connection to inspect private laterals back toward homes or buildings. This allows detailed inspection of laterals for blockages, root intrusion, cross‑bores, and illicit connections without excavating yards, streets, or foundations.