Part of the problem is the 36 ug/L treatment assumption As stated by Coeur d'Alene, treatment plants cannot achieve 36 ug/L phosphorus on a reliable basis As stated by Coeur d'Alene, treatment plants cannot achieve 36 ug/L phosphorus on a reliable basis Statistical analysis of variability shows that higher limits are required Statistical analysis of variability shows that higher limits are required The lowest achievable level on a reliable basis is 50 ug/L on a seasonal average The lowest achievable level on a reliable basis is 50 ug/L on a seasonal average
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