The Wise Report

Henry M. Wise, P.G.

September 13, 2014

 

The TCEQ updates to the Texas Risk Reduction Program (TRRP) Tier 1 Protective Concentration Levels (PCLs) are now available at:  You http://www.tceq.state.tx.us/remediation/trrp/trrppcls.html.

 

The 2014 PCL table update is a single Microsoft Excel workbook with each table on a separate worksheet.  The updates are also available as a print only Adobe Acrobat portable document format (PDF) file.  The Excel file and the PDF file each contain PCL tables 1 through 10 and the supporting tables in the following order:

 

  •          Summary of Updates
  •          Table 1 – Tier 1 Residential Soil PCLs
  •          Table 2 – Tier 1 Commercial/Industrial Soil PCLs
  •          Table 3 – Tier 1 Groundwater PCLs, Residential and Commercial/Industrial
  •          Table 4 – Tier 1 Residential Total Soil Combined PCLs
  •          Table 5 – Tier 1 Commercial/Industrial Total Soil Combined PCLs
  •          Table 6 – Tier 1 Individual Residential Soil PCLs
  •          Table 7 – Tier 1 Individual Commercial/Industrial Soil PCLs
  •          Table 8 – Tier 1 Individual Residential and Commercial/Industrial Groundwater PCLs
  •          Table 9 – Individual Risk-Based Exposure Limits (RBELs), Residential
  •          Table 10 – Individual Risk-Based Exposure Limits (RBELs), Commercial/Industrial
  •          Toxicity Factors
  •          Chemical/Physical Properties
  •          Organic Carbon-Water Partition Coefficient (Koc) Values for Ionizing Organic COCs as a Function of pH
  •          Gastrointestinal and Dermal Absorption Fractions (ABSGI and ABD.d Values)
  •          2011 List of Updates

 

The PCL tables updated in June 2012 were the most recent tables prior to this release.  A guide to the correct interpretation and use of the Tier 1 PCL tables can be accessed at: http://www.tceq.texas.gov/publications/rg/rg-366_trrp_23.html

 

For additional information on the PCL tables, contact Jessica Mauricio at jessica.mauricio@tceq.texas.gov

 

 

Henry M. Wise, P.G.

The Wise Report

9/13/2014

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s