Biosolids Application Plan: Deep Soil Monitoring
The calculation methods used by the District to estimate appropriate loading rates were developed 15 to 20 years ago. Because of the increase in information and technology since that time, the District initiated a study in the fall of 2003 to evaluate the effects of biosolids loading rate calculations used on the METROGRO Farm throughout the soil profile to a depth of five feet. A total of 30 sites are included in the study, 15 sites will be studied each year over the course of the study due to the wheat-fallow crop rotation at METROGRO Farm. Colorado State University staff designed the study. The project is expected to last a minimum of five years. Metro District staff is participating in a supporting role. Colorado State University staff will prepare a data analysis report each year and then a complete report when the project ends and copies will be available and also distributed to staff of the Environmental Protection Agency Region VIII.
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