California DTSC Los Angeles RWQCB Santa Ana RWQCB TCEQ PCLs - The Texas Commission on Environmental Quality's Tier 1 protective concentration levels, which are the default cleanup standards in the Texas Risk Reduction Program.   U.S. EPA Region 9 Preliminary Remediation Goals (PRGs)    Chemfinder  - Chemical properties and internet search database. NIOSH Pocket Guide - Source of general industrial hygiene information on several hundred chemicals. Federal Remediation Technologies Screening Matrix - The latest information regarding the remediation technologies from DOD, DOE, DOI, and EPA. IRIS Risk Assessment Database - Database of human health effects that may result from exposure to various substances found in the environment.