Arrived on site to preform work proposed. Cut in to dry wall to expose the waste piping to the lavatory sink’s. Removed portion of piping as necessary. After a section of pipe was removed I found the waste pipe to be completely clogged. Drain cleaned and removed as much of the blockage as possible. Installed clean out and ran water. After running water for fifteen minutes inspected for leaks no leaks found. Preformed dump test on lavatory sinks at this time, both lavatory sinks are draining efficiently. Inspected outside clean out to ensure water was flowing. Searched for leaks again, no leaks found during search. Cleaned area and informed customer of work completed. Note CPI is not responsible for existing waste or water piping in home and is not responsible for the potential damages it may cause. CPI is not responsible for the replacement of drywall. Thank you for choosing CPI Plumbing and Heating Inc.