I collected snow melt from a mountain stream in Strawberry, CA, 5,325 feet above sea level on April 4th, 2016. When I sent it for analysis, it came back with strontium at 66μg/L and barium at 14μg/L. Other metals were below reporting limits.
Here’s a link to the full pdf of the report: 2016-4-4
And here’s the mountain stream I got the sample from:-