BioRemedial Technologies conducted a Feasibility Study in May of 2008. This study showed that the site was lacking three vital components for biological remediation; oxygen, nutrients, and bacteria. Utilizing BioRemedial’s site-specific approach, all three of these components were addressed over a 6 month remediation period. Focusing on the bacteria, personnel from BioRemedial Technologies developed an indigenous contaminant degrading bacterial culture to create an inoculum of 1,000 gallons. This one-time event also referred to as a biological seeding, occurred during the month of January 2009. To address the oxygen issue, BioRemedial used the proprietary Biological Oxygen Supply System (BOSS) that BRT developed. Over the course of the remediation period, 15 mobile injections were performed. Utilizing the mobile BOSS led to very little site disturbance and required no new infrastructure. During these oxygen events, nutrients designed specifically for the indigenous contaminant degrading bacteria were injected in conjunction with BOSS events. By determining what the site needs were upfront and addressing them, a legacy contaminated site was characterized and biologically remediated in a very short time with minimal costs.

Project Summary

Retail Gasoline Station: BTEX

Site Location:
Slippery Rock, PA

Contaminant(s) of Concern: 
Benzene, Toluene, Ethyl-benzene and Xylene (BTEX)

Contaminant Source: 
Underground Storage Tank Contaminated Media:  Groundwater and soil (clay, silt, sand, rock)

Prior Remediation:
Three  years of Total Phase Extraction

BioRemedial Remediation:

Culture injection with mobile oxygen and nutrient addition   

BioRemedial Remediation Duration:  

Project Status:
No active remediation, site being monitored