The authors gratefully acknowledge the full cooperation and support of the Palos Verdes Peninsula Unified School District, with special thanks to Mr. Bruce Auld, Deputy Superintendent, Business Services, Ms. Lora Dodell, administrative secretary, and Mr. Joe Holdridge, groundskeeper and radon measurement assistant. Mr. Richard Blood, Radon Program, California Department of Health Services, provided all radon detectors and sound technical advice. Dr. Ron Churchill, California Geological Survey, provided expert technical direction, pertinent references, and valuable radon tutorials. Dr. Stuart Salot, CTL Environmental Services, reviewed strategy and positively contributed to key discussions. Finally, this effort would not have been possible without the contributions, support, and assistance of Marianne and Kathryn Fukumoto.
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