Resource Type

Month

Tier 1 PCL Tables (open access)

Tier 1 PCL Tables

This guide provides instruction on the correct interpretation and use of the Tier 1 Protective Concentration Levels (PCL) tables.
Date: March 2009
Creator: Texas Commission on Environmental Quality
System: The Portal to Texas History
Critical PCLs (open access)

Critical PCLs

This document is intended to explain the role of the critical protective concentration level (PCL) in the Texas Risk Reduction Program (TRRP) rule and outline the steps to determine the critical PCL on a site-specific basis.
Date: March 2009
Creator: Texas Commission on Environmental Quality
System: The Portal to Texas History