The Wise Report - March 14, 2015

The Wise Report

Henry M. Wise, P.G.

March 14, 2016


The TCEQ updates to the Texas Risk Reduction Program (TRRP) Tier 1 Protective Concentration Levels (PCLs) are now available at:


The 2016 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 December 2015 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 the following link:


For additional information on the PCL tables, contact Mike Aplin at


The Texas Board of Professional Geoscientists (TBPG) adopts an amendment to 22 TAC §850.62 concerning the licensure and regulation of Professional Geoscientists. This amendment is adopted without changes from the proposed text as published in the November 27, 2015, issue of the Texas Register (40 TexReg 8438). The amendment more consistently uses the defined terms of "professional geoscience" and "professional geoscience services" throughout the rules instead of "public geoscience services" and other similar phrases for consistency and clarity. They also adopted remove the phrase "public geoscience services" and replaces it with "professional geoscience services."


The TBPG also adopts new §851.26 and amendments to §§851.10, 851.20, 851.30, 851.32, 851.101, 851.102, 851.105, 851.107, 851.108, 851.112, 851.152, and 851.156 with changes to the proposed text as published in the November 27, 2015, issue of the Texas Register (40 TexReg 8439). The TBPG adopts amendments to §§851.23, 851.104, 851.106, 851.153, and 851.157 without changes to the proposal.


For more information on these amendments, go to:


Henry M. Wise, P.G.

The Wise Report


Henry M. Wise, P.G.
Sunday, March 13, 2016
Government Update