5 services found

Stone Environmental, Inc. (SEI) Services

Agrochemical Fate and Exposure Services
Surface Water Monitoring Services

Between the edge of a farm field and a downstream water treatment plant is a network of drainage ditches and streams. We monitor the water and biota in these perennial streams to assess the potential impact of pesticides on aquatic animals and plants. We conduct stream sampling at this intermediate scale, where environmental concentrations of a pesticide need to be measured for comparison with ecotoxicological levels of concern.
Environmental Fate Modeling Services

Since 1992, Stone has been assisting agrochemical clients with the registration of new chemicals, and the maintenance and mitigation of existing registrations. As a critical part of every registration project, our modeling team is one of the most experienced in the industry in predicting the environmental concentrations of an agrochemical in surface water and groundwater.
Edge-of-Field Runoff Studies Services

Stone has conducted nine studies quantifying runoff losses of crop protection and lawn care chemicals following rainstorms and irrigation. The objective of these studies was to assess the runoff potential of pesticide products under actual use conditions. In our most recent study, we qualified and instrumented 20 sites throughout the Midwest, trained contractors and growers to collect samples, and managed all sampling activities for the duration of...
Simulated Rainfall Runoff Studies Services

Relying on natural rain can be problematic and expensive for those conducting a runoff study. Everyone in the industry knows of a runoff study in which no runoff was generated, or, conversely, in which a massive event wiped out sampling equipment, ruining the experiment. Getting a natural runoff event of appropriate magnitude within a specific time period following product application is a matter of luck. Use of a rainfall simulator eliminates the...
Community Drinking Water Monitoring Services

With 13 drinking water monitoring studies successfully implemented and 11 completed, we have led the industry in conducting such studies since 1994. These studies have involved several hundred community water systems (CWSs) across the US. We have worked with the Acetochlor Registration Partnership on the largest such study yet conducted, which involved almost 200 CWSs and spanned a period of seven years. Our smallest study involved just five systems...

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Stone Environmental, Inc. (SEI) Services

Agrochemical Fate and Exposure Services

Surface Water Monitoring Services

Environmental Fate Modeling Services

Edge-of-Field Runoff Studies Services

Simulated Rainfall Runoff Studies Services

Community Drinking Water Monitoring Services