Location: Dallas, Texas
Contract: 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 through JESCO's contract with the Army Corps of Engineers (ACOE) - New Orleans District. These projects included Phase I and II Environmental Site Assessments (ESAs), Risk Evaluation/Corrective Action Program (RECAP) Investigations, Clean-Up Plans, Asbestos and Lead Inspections, and Regulated Materials Surveys throughout Louisiana, Texas, Arkansas, Oklahoma, and New Mexico.
1301 Coleman Avenue: Following a Phase I Environmental Site Assessment (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 sampling 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 and 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 collecting 12 soil samples for laboratory analysis. No groundwater was encountered during the site investigation. Leaaf prepared a Targeted Brownfields Assessment (TBA) Phase II ESA report documenting the soil and groundwater investigation and its findings. 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.