Opinion ID: 519994
Heading Depth: 3
Heading Rank: 5

Heading: Changes in Analytical Methods

Text: 293 The EPA's analytical methods for determining pollutant concentrations were developed during the rulemaking period. Part 136 was later amended to provide newer, more accurate analytical methods. Monsanto argues that applying one analytical method for the development of the OCPSF limitations and another more accurate standard for enforcement produced anomalous results and that, therefore, the limitations are arbitrary. 294 Current Part 136 outlines several approved analytical methods reflecting both old and new methods for measuring pollutants. An industry member that believes it can record lower measured pollutant-effluent values using the older methods is permitted to do so. 226 Because Part 136 provides industry members with a choice of several analytical methods for reporting purposes, the industrial petitioners were not prejudiced by changes in analytical methods in the development of the limitations. 295