Patent ID: 7845883

Claim:
A method for remediation of a contaminated subsurface area, the method comprising: injecting an infiltration test surfactant at least one infiltration location in the contaminated area; obtaining a plurality of soil samples from a plurality of locations in the contaminated area; analyzing the plurality of soil samples for the presence of the injected surfactant; and determining a radius of influence of the injected surfactant; injecting a remediation surfactant into the contaminated area; wherein the step of injecting the remediation surfactant is performed based on the determined radius of influence; installing a well-head cap seal on a recovery well, the well-head cap seal comprising: a cap adapted to be secured to the well, the cap defining a port; and a tubing adapted to be inserted through the port; wherein the tubing is adapted to be inserted to a predetermined depth in the well when the cap is secured to the well; and extracting a contaminant from the contaminated area using a vacuum extraction system, the vacuum extraction system comprising, a holding tank; a pump; at least one hose connected to the holding tank and adapted to be connectable to the tubing of the well-head cap seal; moving the tubing to a second predetermined depth in the well to maintain a vacuum pressure within a predetermined range.