How are locations for collecting run off samples from a storm event determined?
Samples are generally collected by our automated runoff samplers. These samplers collect a sample whenever a significant flow occurs at the station. Because we are experiencing much higher flows than before the fire we have also formed two teams to collect samples manually. Manual runoff samples are collected from canyons where stormwater flow crosses the upstream or downstream (eastern) Laboratory boundary. During significant rainfall events, the Stormwater Team is dispatched to observe the canyons along the eastern boundary. In the June 2nd event, only Los Alamos Canyon had flow that crossed the eastern boundary. In subsequent events, flow has been sampled in multiple canyons.
