Underground Storage Tank Project

  • Location: Bonita Springs

PROJECT SCOPE: The SITE historically operated an underground storage tank used to fire the facilities emergency generator(s).  When the storage tank was removed, the closure report indicated the presence of soil and groundwater contamination.  AMRC was contracted to determine if contamination was still present at the site or if a clean closure could be obtained.  In order to assess the site, AMRC advanced 8 soil borings in the area where the former storage tank was located.  The borings were advanced using a combination of hand augers and a direct push style drill rig. Soil samples were collected at one (1) foot intervals from each boring for analysis for the presence of organic vapors utilizing an organic vapor analyzer equipped with a photo ionization detector.  AMRC also collected soil samples for laboratory analysis for the presence of BTEX, MTBE, PAHs and TRPH.  Based on the results of the field screening, AMRC supervised the installation of four (4) shallow monitor wells and subsequently collected groundwater samples for analytical analysis. The laboratory analytical results did not reveal the presence of any tested parameter at a concentration greater than its corresponding regulatory cleanup criteria.  Therefore, as per FAC Chapter 62-770, AMRC conducted an additional groundwater sampling event to confirm our findings.  After the sampling results were confirmed, AMRC requested and received a clean closure from the state of Florida’s Department of Environmental Protection.  The total cost for this project was approximately $25,000 and the project was completed on time and under budget.