Technician Taylor arrived on scene to investigate reports of gas leak. client said if he's lived in the home for approximately eight months and just had the propane filled. The propane guys noticed when they had their manometer hooked up that there was a substantial leak. Technician recommended a whole home gas pressure test. Technicians submitted proposal to client and client accepted. Technician shut off all appliances on gas system to ensure no leaks. Technician disconnected main gas valve and hooked up pressure gauge. Technician pressurized system to 15 psi and then begin crawlspace evaluation. Technician inspected all visible gas line in crawl space to locate leaks. Technician found one branch of gas line had a 10-ft section of track pipe on the end. on the galvanized line right before the trackpipe begins is a coupling that is leaking from both sides. Technician attempted to tighten which slowed the leak but technician would like to return to properly solve. Technician will suppl