Kitchens should be placed at least 100 feet from tent sites and, if possible, near streams or rivers.

厨房必须安放在距离营帐至少100英尺的地方，而且，如果可能，靠近小溪或河流。

youdao

After taking samples from 21 spots along the coast, researchers expected to find the most caffeine pollution in areas near wastewater treatment plants, large population centers or rivers and streams emptying into the ocean, said Elise Granek, assistant professor of Environmental Science and Management at Portland State.

CNN: Researchers find caffeine in waters off Oregon