Respirable Crystalline Silica - Limited Sampling and Risk Assessment Pierce Hall University of California - Riverside Riverside, California Omega Project #2019-3424UCR August 20, 2019 Prepared For: Rebecca Lally University of California - Riverside 395 West Linden Street Riverside, California 92507 Prepared By: Richard Wade, PhD., MPH. Omega Environmental Services, Inc., 4570 Campus Drive - Suite 30 Newport Beach, California 92660 ______________________________ Richard Wade, PhD., MPH. Senior Scientist - Toxicologist ______________________________ Steve Rosas, CAC. Principal and Senior Project Manager