Can anyone recommend good labs, university of commercial, that do stable isotope analysis of C, N, S, Cl, Pb on soil and water, and air samples in the state of Washington or in western US? If you have strong preference for other labs in the US, please list them too. I would appreciate receiving their phone number or e-mail address. Thanks. Said Amali, Ph.D. Soil Scientist Kennedy/Jenks Consultants Federal Way, WA, USA 253-874-0555 [log in to unmask]