Upon arrival I met with the homeowner, there was a leak in the basement. At the penetration of home where main sewer line comes into home fitting is cracked. A camera technician will be back Monday to give homeowner more information on a quote. Water pressure was at 120 psi and expansion tank was failed. I removed and replaced existing expansion tank and pressure regulating valve. Regulating valve was set to 65 PSI and expansion tank is now properly strapped to wall. I checked and tested for leaks and conducted a super clean up.