X marks the spot

Sometimes you go the extra mile, I got a call from  a plumber I do leakdetection for, this morning. They had a leak at a Kindergarten and needed my help. Kindy's like old people have no money, so I assisted the Plumber  and tonight in my own time I spent a bit of time finding their leak. A real curly one inside the building in the end room I thought I struck gold but the sound I picked up was from the Electrical Switch Board, the next sound was from a tap in a utility room and no not there but close. Finally  I picked up a good sound in the driveway and marked where I reckon the leak is. Alan will reward me at  Christmas with a box of brown fizzy drink .