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4 <br /> _ x <br /> f <br /> x <br /> xa <br /> i <br /> .100 <br /> JL, t 1. <br /> a <br /> NXI <br /> *. t <br /> z { <br /> 1 a <br /> k , <br /> - ' a i <br /> 4 ' <br /> la <br /> RESTO <br /> NEW PACKAGING, RELIABLE METHODS, EFFECTIVE SOLUTIONS , <br /> Restoration of ground water which enclosure that EA has developed. It is <br /> has been contaminated by petroleum a given that the treatment technology <_ <br /> products is a lengthy process. Given itself must be effective and reliable, <br /> the physical and chemical nature of but it also needs to be unobtrusive, safe, <br /> petroleum hydrocarbons in the and secure. In many cases,the local <br /> environment (soil and water), it is no ordinances require that the architecture <br /> surprise that cleanup may take several and landscaping around the system <br /> years. The ground-water remediation meet local codes as well. k <br /> technique most commonly used and While each site has its own unique <br /> widely recommended for performance characteristics, and generally requires a y <br /> is pump-and-treat, using phase separa- unique configuration of recovery wells <br /> tion, air stripping, carbon adsorption, and treatment system, the basic system <br /> and reinjection of the treated water to that is common to most pump-and-treat <br /> the ground water, or discharge to a systems consists of transfer pumps, <br /> POTW, depending on regulations. stripper tower,pump, surge pump, <br /> Because the duration of treatment is water treatment,holding tanks, and <br /> long, the design of the treatment plant testing systems. The exact treatment <br /> is an important factor in the design. system is configured by engineers <br /> It is this combination of effective working from the results of field <br /> ground-water restoration neatly pack- investigations, risk assessments, and <br /> aged in a compatible and aesthetic feasibility studies. The layout is <br /> subject to state (and sometimes local) F <br /> permitting for environmental <br />