For analysis of water or wastewater samples required by state and federal clean water rules and regulations, laboratories must use the methods and test procedures in Code of Federal Regulations, title 40, part 136, as amended.
For analysis of sewage sludge samples required by state rules and federal regulations, laboratories must use the methods and test procedures in Code of Federal Regulations, title 40, part 503, as amended, and "Test Methods for Evaluating Solid Waste: Physical/Chemical Methods," Publication SW-846, United States Environmental Protection Agency (2007 and as subsequently amended and as published as final). Publication SW-846 is incorporated by reference, is not subject to frequent change, and is available at http://www.epa.gov/epawaste/hazard/testmethods/sw846/online/index.htm.
The MPCA Laboratory Certification Program Manual, Minnesota Pollution Control Agency (2014 and as subsequently amended), is incorporated by reference, is not subject to frequent change, and is available at http://www.pca.state.mn.us/4p44whk.
Minn. R. agency 167, ch. 7001, MAJOR FACILITY SUBSTANCE STORAGE PERMITS, pt. 7001.4340