Rule 62-303.354. Nitrate-nitrite in Freshwater Spring Vents

A spring vent in predominantly fresh waters shall be included on the Planning list for nitrate-nitrite if:

(1) The numeric interpretation of the narrative nutrient criterion established in subsection 62-302.531(2), F.A.C., is exceeded, or

(2) Algal mats or blooms are present in sufficient quantities to pose a nuisance or hinder reproduction of a threatened or endangered species, or other information is available, pursuant to Rule 62-303.350, F.A.C., indicating an imbalance in flora or fauna due to nutrient enrichment; or

(3) There is a statistically significant increasing trend in the annual geometric means at the 95 percent confidence level in nitrate-nitrite over the assessment period using the Mann Kendall Trend Test. To calculate the trend there must be a minimum of four annual geometric means in the assessment period; or

(4) For a spring with a nitrate-nitrite criterion expressed as a monthly average, there is a sufficient number of samples from the water segment that do not meet the applicable water quality criterion based on the data sufficiency requirements in subsection 62-303.350(7), F.A.C. Data must meet the requirements of subsections and paragraphs 62-303.320(2), (3), (4)(c)-(4)(e), (8), and (9), F.A.C. Rulemaking Authority 403.061, 403.067 FS. Law Implemented 403.062, 403.067 FS. History–New 7-2-12, Amended 2-17-16, 11-25-25.