Scientists collecting samples of runoff from a test plot during a simulated rainfall event. The field received an application of biosolids, and the runoff samples were analyzed for organic chemicals that are commonly used in our everyday lives.
Tracy Yager
Tracy Yager is the Quality Management System Manager for the Rocky Mountain Region.
Science and Products
Quality Management System for USGS Laboratories
The reputation of the U.S. Geological Survey (USGS) for scientific excellence, integrity, and objectivity is one of the Bureau’s most important assets.
Biosolids, soils, crops, ground water, and streambed sediments in the vicinity of a biosolids-application area near Deer Trail, Colorado
The Metro Wastewater Reclamation District (Metro District) applies biosolids throughout their properties (the MetroGro Farm) near Deer Trail, Colorado. These biosolids applications could affect the quality of water in alluvial and bedrock aquifers, streambed sediment, soil, dust, and crops. The U.S. Geological Survey (USGS) has a monitoring program to address concerns from a stakeholder group...
Scientists collecting samples of runoff from a test plot
Scientists collecting samples of runoff from a test plot during a simulated rainfall event. The field received an application of biosolids, and the runoff samples were analyzed for organic chemicals that are commonly used in our everyday lives.
Soil Sampling in Eastern Colorado
Soil sampling in Eastern Colorado indicated that some chemicals introduced to nonirrigated farmland through biosolids application persisted through 468 days, and some chemicals were sufficiently mobile to be detected in soil as deep as 126 centimeters below land surface.
Soil sampling in Eastern Colorado indicated that some chemicals introduced to nonirrigated farmland through biosolids application persisted through 468 days, and some chemicals were sufficiently mobile to be detected in soil as deep as 126 centimeters below land surface.
Science and Products
Quality Management System for USGS Laboratories
The reputation of the U.S. Geological Survey (USGS) for scientific excellence, integrity, and objectivity is one of the Bureau’s most important assets.
Biosolids, soils, crops, ground water, and streambed sediments in the vicinity of a biosolids-application area near Deer Trail, Colorado
The Metro Wastewater Reclamation District (Metro District) applies biosolids throughout their properties (the MetroGro Farm) near Deer Trail, Colorado. These biosolids applications could affect the quality of water in alluvial and bedrock aquifers, streambed sediment, soil, dust, and crops. The U.S. Geological Survey (USGS) has a monitoring program to address concerns from a stakeholder group...
Scientists collecting samples of runoff from a test plot
Scientists collecting samples of runoff from a test plot during a simulated rainfall event. The field received an application of biosolids, and the runoff samples were analyzed for organic chemicals that are commonly used in our everyday lives.
Scientists collecting samples of runoff from a test plot during a simulated rainfall event. The field received an application of biosolids, and the runoff samples were analyzed for organic chemicals that are commonly used in our everyday lives.
Soil Sampling in Eastern Colorado
Soil sampling in Eastern Colorado indicated that some chemicals introduced to nonirrigated farmland through biosolids application persisted through 468 days, and some chemicals were sufficiently mobile to be detected in soil as deep as 126 centimeters below land surface.
Soil sampling in Eastern Colorado indicated that some chemicals introduced to nonirrigated farmland through biosolids application persisted through 468 days, and some chemicals were sufficiently mobile to be detected in soil as deep as 126 centimeters below land surface.