SYMPOSIA PAPER Published: 01 January 1985

Monsanto Analytical Testing Program for NPDES Discharge Self-Monitoring


The Monsanto Analytical Testing (MAT) program was devised and implemented in order to provide analytical standards to Monsanto manufacturing plants involved in the self-monitoring of plant discharges as required by National Pollutant Discharge Elimination System (NPDES) permit conditions. Standards are prepared and supplied at concentration levels normally observed at each individual plant. These levels were established by canvassing all Monsanto plants having NPDES permits and by determining which analyses and concentrations were most appropriate. Standards are prepared by Monsanto's Environmental Sciences Center (ESC) using Environmental Protection Agency (EPA) methods. Eleven standards are currently available, each in three concentrations. Standards are issued quarterly in a company internal round-robin program or on a per request basis or both.

Since initiation of the MAT program in 1981, the internal round-robin program has become an integral part of Monsanto's overall Good Laboratory Practices (GLP) program. Overall, results have shown that the company's plant analytical personnel can accurately analyze and report standard test samples. More importantly, such personnel have gained increased confidence in their ability to report accurate values for compounds regulated in their respective plant NPDES permits.

Author Information

Hoogheem, TJ
Monsanto Company, St. Louis, MO
Woods, LA
Monsanto Research Company, Dayton, OH
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Developed by Committee: D19
Pages: 237–241
DOI: 10.1520/STP30303S
ISBN-EB: 978-0-8031-4932-8
ISBN-13: 978-0-8031-0224-8