Check this link out for a very useful guidance document on QAQC for small waste water labs.  It is quite fundamental...but that is its beauty. 

LINK to Uof T Brett Ward QAQC for small labs document

http://www.mtas.tennessee.edu/public/MTASPUBS.NSF/WebByTitle/D12AB0743C393168852576C4004F0A75?OpenDocument

I am very interested in knowing what people think about it.