The property owner, an international corporation, retained Cl-Solutions, Cincinnati, to help the transaction stay on schedule. In September 2000, the bioremediation process was implemented in conjunction with the other technologies to accelerate the circulation of Cl-Out microbes in the subsurface. Cl-Out is a patented consortium of naturally occurring bacteria isolated from contaminated soil. The microbes in this proprietary blend are called Pseudomonas sp., and are known for their ability to metabolize a wide range of organic compounds. The water is reinjected through 10 wells along 3 sides of the rectangle.
Air is released through two rows of three sparge wells apiece.
The remediation was monitored weekly from samples taken from the groundwater circulation system. The concentrations of potential breakdown products, including TCE, also decreased significantly. Lake Tahoe, the largest alpine lake in North America, is a municipal drinking water source. In addition, the federal government has designated the lake as an Outstanding Resource Water, which allows for zero degradation. MTBE is the most common oxygenated fuel additive used in reformulated gasoline.