Data Quality Survey

My current job involves looking at how we hold metadata so I was interested to read about the data quality survey. I'm sure I've said it before, but metadata is one of my hobby horses. It's no good people using geo data if they don't know how good it is. A position of 54° 00'N 003° 00'W could be accurate to seconds or degrees; it's all in the metadata. I confess to not being a data modeller and most of the OGC website baffles me unless I take it slowly with a clear head. The ISO standard relating to my current piece of work is 19115:2003 and all I can say is I'm grateful there are others at work who understand this inside out and can advise me.