Data Quality: Cation-Anion Balances Contaminated Site Cleanup Guidance September 28, 2009 - Cation-Anion Balance GuideSeptember 28, 2009 - TDS vs EC Figures 1 Through 3August 27, 2009 - Cation-Anion Balance GuideAugust 27, 2009 - Figure 1: TDS Laboratory Versus ECAugust 27, 2009 - Figure 2: Low Range Lab TDS vs Field ECAugust 27, 2009 - Figure 3: High Range Lab TDS vs Field ECMay 21, 2007 - Cation-Anion Balance Guide Back to Resource Search