3-17-2025: Excavated existing clean outs at 732 and 734 for access to descale and line 4” cast. Descaled from toilet collar in unit 730 to wye for 4” main from unit 732. Descaled from unit 732 toilet collar to open hole outside. Descaled from toilet collar in 734 to open hole outside. Descaled from toilet collar in unit 736 to wye at main 4” from 734. Took measurements for lining from open holes back to toilet collars in units 732 and 734, also line from toilet collars in 730 and 736 up to wye from 4” mains, we will install x2 connection liners at main wyes. 3-27-25 Inserted 4” liners at 732 and 734 through the two open pipes extending approximately 12 feet upstream ending at the toilet collars. Inserted 4” liners at 730 and 736 through the two toilet collars extending approximately 15 feet ending just prior to the connections to the main run. 3-28-25 Installed two connection liners from both open pipes to connect the main lines and branch lines. Reinstated all connections. Repiped