Contract:  Leaaf Environmental, LLC (Leaaf) is currently under contract with JESCO Environmental & Geotechnical Services, Inc (JESCO) to assist them in the completion of numerous site investigations as part of the Environmental Protection Agency’s (EPA’s) Region 6 Targeted Brownfields Assessment (TBA) Program.  These projects included Phase I and II Environmental Site Assessments (ESAs), Environmental Risk Assessment Investigations, Clean-Up Plans, Asbestos and Lead Inspections, and Regulated Materials Surveys throughout Louisiana, Texas, Arkansas, Oklahoma, and New Mexico.

A Targeted Brownfields Assessment may encompass one or more of the following activities:

  • An ASTM Phase I, which includes a background and historical investigation and site inspection;
  • A full site assessment, including sampling activities to identify types and concentrations of contaminants and the areas of contamination that must be cleaned up; and
  • The determination of how much more investigation is needed and/or the establishment of cleanup options and cost estimates based on future uses and redevelopment plans.

Installing Soil Boring

Location:  Dallas, Texas

1301 Coleman Avenue:  Following a Phase I ESA, Leaaf prepared a Field Sampling Plan, a Quality Assurance Project Plan (QAPP), and a Health and Safety Plan (HASP) to describe procedures for the collection and analysis of soil and groundwater samples to determine whether past uses of the site and adjoining properties have negatively impacted the site.  This site was a former auto repair garage in Dallas, Texas. Surrounding properties consisted of auto repair/filling stations, dry cleaning facilities, an auto scrap facility, and a chemical landfill.  Site investigation activities included advancing six soil borings, collection of soil samples at two-foot intervals for field screening, and collection of 12 soil samples for laboratory analysis.  No groundwater was encountered during the site investigation.  Leaaf prepared a TBA Phase II ESA report documenting the soil investigation and evaluating its findings in accordance with Texas Risk Reduction Program (TRRP) guidance.  The results of the soil sampling indicated that soils on the site contain elevated concentrations of arsenic, lead, and mercury.  The elevated concentrations were below the human health Tier 1 Protective Concentration Levels (PCL) and protective of the soil to groundwater risk pathway, and therefore did not pose a risk to human health or the environment.

The proposed reuse/redevelopment of this property is quality housing.