IDNR has issued guidance on operational testing due to recent regulatory changes. Please click on the document below.
Sonja Waldner, Iowa OSHA, Senior Industrial Hygienist has recommended a publication for the GHS Hazard Communication - Small Entity Compliance Guide for Employers that use Hazardous Chemicals.
Some specific manuals I have found useful:
Writing a quality assurance project plan (QAPP) http://www.epa.gov/owow/monitoring/volunteer/qappcovr.htm