environmental,soil,engineers,contamination,groundwater,hydrogeologistsTechnical Links


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.



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Orion Environmental Inc., 2006