March 22nd, 2016

We just received the following update from the Texas Commission on Environmental Quality (TCEQ). We are pleased to announce the TCEQ updates to the Texas Risk Reduction Program (TRRP) Tier 1 Protective Concentration Levels (PCLs) are now available. You can access these tables using the link: We are releasing the 2016 PCL table update as a single Microsoft Excel workbook with each table on a separate worksheet.  We are also releasing the updates 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 Read More »