Because of VESTRA's success at closing another facility (Pine Grove Service Station), a firm located in Redding contracted with VESTRA in 2004 to oversee remedial activities associated with company's outlet located in Red Bluff. This is a retail fueling and convenience store facility, which had undergone continuous but unsuccessful, remedial activities since a release was first discovered in 1990.

A thorough review of previous investigations and associated analytical data was conducted to identify data gaps during the initial stages of the project. Following coordination with the Regional Water Quality Control Board (RWQCB) and the client, a strategic plan was developed for the project to obtain the information required to implement remedial action.

The project required a preliminary subsurface investigation using continuous core geoprobe borings installed on 40-foot centers along with an extensive sampling program to develop a conceptual site model. Upon completion, the project was fast-tracked to submit a work plan for bench test analyses and regulatory approval to use in-situ chemical oxidation (sodium persulfate and hydrogen peroxide) as the preferred remedial alternative. Coordination with chemical application subcontractors and drilling contractors followed immediately, and application was completed over a ten-day period during night hours to avoid closing the facility during business hours. Remedial activities were a succes,s reducing petroleum contaminants in groundwater about 92 percent.

VESTRA was able to obtain this reduction in less than two years start-to-finish. A formal Request for No Further Action was submitted to the RWQCB in July 2007. This request was approved by the RWQCB in August 2007.